US20050272401A1 - Environmentally-sealed portable terminal - Google Patents
Environmentally-sealed portable terminal Download PDFInfo
- Publication number
- US20050272401A1 US20050272401A1 US11/186,592 US18659205A US2005272401A1 US 20050272401 A1 US20050272401 A1 US 20050272401A1 US 18659205 A US18659205 A US 18659205A US 2005272401 A1 US2005272401 A1 US 2005272401A1
- Authority
- US
- United States
- Prior art keywords
- battery
- terminal
- battery pack
- cavity
- latch mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/163—Wearable computers, e.g. on a belt
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0262—Details of the structure or mounting of specific components for a battery compartment
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T292/00—Closure fasteners
- Y10T292/08—Bolts
- Y10T292/096—Sliding
- Y10T292/0969—Spring projected
- Y10T292/097—Operating means
- Y10T292/0976—Sliding cam
Definitions
- This invention relates generally to wearable, portable and/or mobile computer terminals and peripherals.
- Wearable, portable and/or mobile computer terminals are used for a wide variety of tasks. Such terminals allow a worker using them to have mobility, while providing them with desirable computing and data-processing functions. Furthermore, various terminals provide a communication link to a larger, more centralized computer system. Such terminals are being implemented for an ever-increasing number of tasks.
- One illustrative example of a specific use for a wearable or portable terminal is inventory management.
- Computerized inventory management systems are used in inventory-driven industries for various tasks, such as food and retail product distribution, manufacturing, and quality control.
- An overall integrated inventory management system involves a combination of a central computer for tracking and management, and the people who use and interface with the computer system in the form of order fillers, pickers and other workers. The workers handle the manual aspects of the integrated management system.
- wearable or portable terminals are used by the workers as they complete their numerous tasks.
- Such wearable terminals pull information directly from the central system and translate the information into voice or text commands for the workers.
- wireless RF networks the commands to and responses from the workers are communicated between the system and the terminals.
- the worker wears a headset which is coupled to their wearable terminal. Through the headset, the workers are able to receive voice instructions, ask questions, report the progress of their tasks, and report working conditions, such as inventory shortages, for example.
- the work is done virtually hands-free without equipment to juggle or paperwork to carry around.
- headsets In addition to headsets, other peripherals are often coupled to the terminals depending upon the tasks to be performed. For example, bar code readers and other scanners may be utilized alone or in combination with a headset to communicate back and forth with the system.
- An illustrative example of a job through a system utilizing wearable and/or portable terminals having voice capabilities may involve initially welcoming the worker to the system and defining a particular task or order, for example, a load to be filled for a certain truck to depart from a warehouse.
- the worker may then answer with a particular area (e.g., freezer) that they will be working in for that order.
- the system then vocally directs the worker to a particular aisle and bin to pick a particular quantity of an item.
- the worker then vocally confirms their location and the amount of items that are picked.
- the system may then direct them to a loading dock or bay for a particular truck to receive the order.
- various different scenarios might be played out through the system using a wearable terminal and attached peripherals.
- the terminals are electronic devices which require a source of power. Therefore, they utilize a portable power source, such as a battery. During a shift, a worker may find that they must replace the battery in their terminal with a new one. This can be a tedious task. Often times a worker will have to stop what they are doing, remove the terminal from their belt or other securing device, disconnect the battery and install/connect a new battery. This usually requires two hands and is a significant disruption to the work schedule.
- a further issue with portable batteries used with wearable and/or portable terminals is that they are susceptible to falling off or out of the terminal during use.
- wearable terminals are subject to rigorous use as the workers scramble around handling various tasks. The terminals are often bumped or otherwise abused in use.
- FIG. 1 is an illustration of a terminal constructed in accordance with the principles of the invention
- FIG. 2 is a partially-broken away side view of the terminal of FIG. 1 showing the battery pack in a latched condition;
- FIG. 5 is an exploded view of a portion of the terminal of FIG. 1 showing the assembly of the battery latch mechanism with the terminal housing;
- FIG. 5A is an exploded view of the battery latch mechanism of the terminal of FIG. 1 .
- a wearable, portable and/or mobile terminal 10 of the invention is worn by a worker on a belt 12 or is otherwise associated by another securing device associated with the worker's person.
- the terminal 10 is connected to at least one peripheral device 14 , such as a headset or bar code reader, by a length of a cord 16 electrically coupled to the terminal 10 .
- each peripheral device 14 may communicate unidirectionally or bidirectionally with the terminal 10 over a wireless communication link, such as a radiofrequency (RF) link or an infrared (IR) link.
- RF radiofrequency
- IR infrared
- the terminal 10 incorporates a removable battery pack 18 and a battery latch mechanism 20 for detachably securing the removable battery pack 18 to the terminal 10 .
- the battery pack 18 supplies electrical power to the electronics of the terminal 10 so that the terminal 10 is wearable by the worker and is portable. As the battery pack 18 is powered and used in the warehouse environment, the electrical energy stored by the battery pack 18 is necessarily depleted until the battery capacity is expended.
- the battery capacity of the battery pack 18 may be replenished with a battery charger (not shown) having a power supply that can provide a supply of DC current.
- the terminal 10 includes a terminal housing 22 having a curved, convex outer surface 23 and a battery-receiving cavity 24 recessed below the outer surface 23 .
- the battery-receiving cavity 24 is dimensioned to receive the battery pack 18 therein and provides a recessed void generally shaped like a cuboid or a parallelepiped that is external to the terminal housing 22 .
- the terminal housing 22 includes a pair of opposing side walls 25 , 26 , a pair of opposing end walls 27 , 28 , and a base wall 30 having an outwardly-facing substantially planar, rectangular base surface 32 extending transversely between the side walls 25 , 26 and longitudinally between the end walls 27 , 28 .
- the walls 25 , 26 , 27 , 28 and 30 defined the boundaries of the battery-receiving cavity 24 .
- End wall 28 separates a chamber 38 provided inside the terminal housing 22 from the battery-receiving cavity 24 .
- the terminal housing 22 may be molded from a polymer resin.
- inwardly and outwardly directions are referenced relative to the base surface 32 bounding the battery-receiving cavity 24 .
- An outwardly direction is directed away from the base surface 32 and an inwardly direction is directed toward the base surface 32 .
- An encapsulant 46 such as an encapsulant selected from among the 1650 Series of encapsulants commercially available from Mereco Technologies Group (West Warwick, R.I.), is injected into the chamber 38 to secure the electrical contacts 34 in place and to prevent displacing of the electrical contacts 34 by the battery pack 18 relative to the battery-receiving cavity 24 back into the terminal housing 22 .
- the encapsulant 46 also provides waterproofing and dustproofing so that the terminal 10 is sealed against the entry or infiltration of contaminants, including dust, moisture and other liquids, into the interior 17 of the terminal housing 22 through openings 42 .
- the battery-receiving cavity 24 is accessible from the exterior of the terminal housing 22 for placement of the battery pack 18 .
- the battery pack 18 includes a sealed case 48 , preferably molded from a polymer resin and shaped roughly like a parallelepiped or cuboid, and a battery cell 47 , typically a lithium ion battery cell, housed within the sealed environment of the sealed case 48 .
- the sealed case 48 is provided with a pair of opposing transverse ends 50 , 52 , a peripheral edge 53 at transverse end 52 , a contact-containing portion 54 protruding outwardly from transverse end 50 , and an outwardly-facing shoulder 56 formed by the contact-containing portion 54 .
- the sealed case 48 of the battery pack 18 is sealed against the entry of moisture or other liquids.
- the sealed case 48 may be molded as multiple sections and subsequently joined by any suitable technique, such as ultrasonic welding, that provides a water-tight enclosure.
- the electrical contacts 62 provide the only external connections with battery cell 47 and have a liquid-tight seal with the corresponding openings in the contact-containing portion 54 .
- the electrical contacts 62 may be press-fit into the corresponding openings in the contact-containing portion 54 or the sealed case 48 may be molded about the electrical contacts 62 .
- the peripheral edge 53 of sealed case 48 further includes a lip 66 and a latch cavity 68 with an entrance or opening therein oriented for engagement with the battery latch mechanism 20 when the battery pack 18 is inserted into the battery-receiving cavity 24 .
- the lip 66 and latch cavity 68 extend transversely into and out of the plane of the page of FIG. 2 .
- the latch cavity 68 has a triangular cross-sectional profile in a transverse direction.
- the lip 66 includes an outwardly-facing planar surface 70 that defines a lower surface of the latch cavity 68 and an inwardly-facing inclined camming surface 72 of the lip 66 oriented downwardly toward the base wall 30 of the battery-receiving cavity 24 when the battery pack 18 is inserted into the battery-receiving cavity 24 .
- the inclined camming surface 72 is coextensive with the planar surface 70 along a shared transverse edge 74 .
- an actuator or release button 78 in the form of a pushbutton depressible to cause the latching member 76 to move between the extended and retracted positions, and a bracket member 80 pivotally coupling the release button 78 with the terminal housing 22 of the terminal 10 .
- the bracket member 80 of the battery latch mechanism 20 is secured to the terminal housing 22 with conventional fasteners 81 or the like.
- the latching member 76 , the release button 78 , and the bracket member 80 may be molded from a polymer resin.
- the release button 78 and the bracket member 80 may be molded from any polymer resin having good low temperature characteristics useful when the terminal 10 is exposed to a low temperature ambient environment.
- the release button 78 and the bracket member 80 may be formed from a mixture of polycarbonate with either polybutylene terephthalate (PBT) or polyethylene terephthalate (PET), such as the family of such polymer resins available commercially under the tradename XENOY® from GE Plastics (Seven Hills, Ohio).
- a biasing member 82 urges or biases the latching member 76 to the extended position when the release button 78 is not depressed.
- One end of the biasing member 82 fits over a guide post 83 formed on the release button 78 .
- An opposite end of the biasing member 82 abuts end wall 27 of the terminal housing 22 .
- the biasing member 82 is constrained against lateral movement by a pair of transversely-spaced guides 84 , 85 projecting outwardly from the base surface 32 and a pair of transversely-spaced prongs 86 , 87 projecting inwardly from the bracket member 80 . While the biasing member 82 is illustrated as a compression spring, the invention contemplates that other types of springs, plastic cantilevers, or elastic members may also be used for biasing the latching member 76 toward the extended position.
- the release button 78 is pivotal relative to the bracket member 80 about a transverse axis of rotation defined by a transversely-spaced pair of pivot pins 88 , of which one pivot pin 88 is shown, that also secure the release button 78 mechanically with the bracket member 80 .
- a pair of transversely-spaced flanges 89 , 90 are provided on the release button 78 and project inwardly toward the base surface 32 .
- the transverse space between the flanges 89 , 90 is dimensioned to receive therebetween the prongs 86 , 87 of the bracket member 80 .
- the flanges 89 , 90 extend into a corresponding pair of transversely-oriented grooves 91 , 92 provided on the latching member 76 .
- Flange 93 has a longitudinally spaced relationship with flanges 89 , 90 .
- the latching member 76 is slidingly captured between the tip of the flange 93 and the base surface 32 so that the latching member 76 cannot cantilever outwardly relative to the engagement between the flanges 89 , 90 and grooves 91 , 92 during movement between the extended and retracted positions.
- a battery-engaging element 96 projects from the latching member 76 toward the interior of the battery-receiving cavity 24 of the terminal 10 .
- the battery-engaging element 96 has a planar surface 98 facing the base surface 32 of the battery-receiving cavity 24 and an inclined camming surface 100 positioned opposite to the planar surface 98 .
- the battery-engaging element 96 is captured within the latch cavity 68 when the battery pack 18 is present in the battery-receiving cavity 24 and the latching member 76 is in the extended position ( FIG. 2 ).
- the inclination angle of the inclined camming surface 100 of the battery-engaging element 96 is complementary to the inclination angle of the inclined camming surface 72 of the lip 66 .
- the battery pack 18 is placed in the unlatched condition when the latching member 76 is fully in the extended position and the inclined camming surfaces 72 , 100 are abutting. In the unlatched condition, the battery pack 18 is lifted by the engagement between the inclined camming surfaces 72 , 100 and may be manually removed from the battery-receiving cavity 24 . Manual removal is facilitated by the outward projection of an upper corner 102 of peripheral edge 53 of the battery pack 18 above the outer surface 23 of the terminal housing 22 . The upper corner 102 is readily grasped by a worker for removal of the battery pack 18 .
- an outwardly-facing surface 104 of the release button 78 has a convex curvature that generally conforms with the convex curvatures of the outer surface 23 of the terminal housing 22 and the outwardly-facing surface 58 of the sealed case 48 of the battery pack 18 .
- the portion of the terminal housing 22 surrounding the release button 78 operates as a guard to prevent inadvertent latching and unlatching from incidental contact with outwardly-facing surface 104 .
- a worker is generally required to make a specific and deliberate effort to apply an inward force to pivot the release button 78 for unlatching the battery pack 18 . This, therefore, reduces the likelihood of damage to the battery pack 18 from inadvertently falling out of the terminal housing 22 .
- a set of finger grips 106 that reduce slippage with the worker's finger when the release button 78 is pressed to actuate the battery latch mechanism 20 .
- the finger grips 106 project a short distance outwardly above the surface 104 of the release button 78 that is insufficient to allow inadvertent actuation of the release button 78 and insufficient to significantly interrupt the smooth, curved contour presented collectively by surfaces 23 , 58 , 104 .
- the battery pack 18 is initially in the latched condition shown in FIG. 2 with the battery-engaging element 96 of the latching member 76 engaged within the latch cavity 68 of the sealed case 48 of battery pack 18 .
- an inward force is applied to push or depress the release button 78 in a general direction indicated by arrow 108 in FIG. 3 .
- the inward force causes the release button 78 to pivot about pivot pins 88 relative to the bracket member 80 .
- the pivoting of the release button 78 displaces the latching member 76 toward wall 27 in a general direction indicated by arrow 110 in FIG.
- the spring fingers 40 of the electrical contacts 34 which are compressed when the battery pack 18 is latched, collectively exert a lateral propulsive or motive force against the battery pack 18 that is directed away from end wall 28 as the spring compression is released.
- the lateral motive force displaces or moves the battery pack 18 toward the battery latch mechanism 20 in a direction generally indicated by arrow 112 in FIG. 3 .
- a camming surface 105 on the peripheral edge 53 of sealed case 48 engages a mating camming surface 103 on the terminal housing 22 , causing the end of the battery pack 18 to elevate in a direction indicated by arrow 114 in FIG.
- the cooperating camming surfaces 103 , 105 at the interface between battery pack 18 and terminal housing 22 work with the propulsive force supplied by the electrical contacts 34 to lift the end of the battery pack 18 partially out of the battery-receiving cavity 24 where battery pack 18 can be grasped using the same finger that actuated the release button 78 .
- the depressed release button 78 provides a space for the finger to contact the corner 102 and elevated end of the battery pack 18 . This makes possible a rapid one-hand removal of the battery pack 18 .
- the corner 102 of the peripheral edge 53 projects an additional distance above the contour of the outer surface 23 of the terminal housing 22 sufficient for removing the battery pack 18 from the battery-receiving cavity 24 .
- the continued engagement between the inclined camming surfaces 72 , 100 after the sliding relative movement therebetween ceases, holds the battery pack 18 in the unlatched condition in which the battery pack 18 can be easily disengaged from the battery-receiving cavity 24 and removed from the terminal 10 by single-handed manual manipulation.
- the hand of the worker is positioned to cradle the battery pack 18 during removal from terminal 10 so that the risk of dropping is reduced.
- the removal of the battery pack 18 may be accomplished with one hand and while the terminal 10 remains secured to belt 12 .
- the battery pack 18 is replaced by inserting the end 50 of the battery pack 18 into the battery-receiving cavity 24 so that the flat pads 64 contact the spring fingers 40 and the shoulder 56 of the battery pack 18 is captured between the lip portion 44 and base surface 32 of the terminal housing 22 .
- An inward force applied to the sealed case 48 adjacent to end 52 toward the base surface 32 causes the latching member 76 to move from the extended position to the retracted position against the biasing force of the biasing member 82 by sliding contact between the inclined camming surfaces 72 , 100 .
- the battery pack can be quickly, easily, and effectively attached to the terminal and removed from the terminal.
- battery management procedures are simplified for active workers and delays associated with power issues are reduced.
- the principles of the invention improve worker efficiency and effectiveness.
- the principles of the invention act to ruggedize the terminal and battery pack so that operational lifetimes are lengthened.
Abstract
A wearable, mobile and/or portable terminal for use in an inventory management system. The terminal includes a terminal housing, a battery pack removably receivable within an external battery-receiving cavity of the terminal housing, and a battery latching mechanism that secures the battery pack in the battery-receiving cavity in a latched condition. The battery pack has an unlatched condition in which the battery latch mechanism is disengaged from the battery pack. The terminal and battery pack are environmentally sealed to, for example, preclude entry of water into the interior of the terminal when the terminal is immersed.
Description
- This application is a divisional of application Ser. No. 10/185,334, filed Jun. 27, 2002, the disclosure of which is hereby incorporated by reference herein in its entirety.
- This invention relates generally to wearable, portable and/or mobile computer terminals and peripherals.
- Wearable, portable and/or mobile computer terminals are used for a wide variety of tasks. Such terminals allow a worker using them to have mobility, while providing them with desirable computing and data-processing functions. Furthermore, various terminals provide a communication link to a larger, more centralized computer system. Such terminals are being implemented for an ever-increasing number of tasks.
- One illustrative example of a specific use for a wearable or portable terminal is inventory management. Computerized inventory management systems are used in inventory-driven industries for various tasks, such as food and retail product distribution, manufacturing, and quality control. An overall integrated inventory management system involves a combination of a central computer for tracking and management, and the people who use and interface with the computer system in the form of order fillers, pickers and other workers. The workers handle the manual aspects of the integrated management system.
- To provide an interface between the central computer system and the workers, wearable or portable terminals are used by the workers as they complete their numerous tasks. Such wearable terminals, for example, pull information directly from the central system and translate the information into voice or text commands for the workers. Through wireless RF networks, the commands to and responses from the workers are communicated between the system and the terminals. To communicate in a voice driven system, for example, the worker wears a headset which is coupled to their wearable terminal. Through the headset, the workers are able to receive voice instructions, ask questions, report the progress of their tasks, and report working conditions, such as inventory shortages, for example. Using such terminals, the work is done virtually hands-free without equipment to juggle or paperwork to carry around.
- In addition to headsets, other peripherals are often coupled to the terminals depending upon the tasks to be performed. For example, bar code readers and other scanners may be utilized alone or in combination with a headset to communicate back and forth with the system.
- An illustrative example of a job through a system utilizing wearable and/or portable terminals having voice capabilities may involve initially welcoming the worker to the system and defining a particular task or order, for example, a load to be filled for a certain truck to depart from a warehouse. The worker may then answer with a particular area (e.g., freezer) that they will be working in for that order. The system then vocally directs the worker to a particular aisle and bin to pick a particular quantity of an item. The worker then vocally confirms their location and the amount of items that are picked. The system may then direct them to a loading dock or bay for a particular truck to receive the order. As may be appreciated, various different scenarios might be played out through the system using a wearable terminal and attached peripherals.
- The terminals are electronic devices which require a source of power. Therefore, they utilize a portable power source, such as a battery. During a shift, a worker may find that they must replace the battery in their terminal with a new one. This can be a tedious task. Often times a worker will have to stop what they are doing, remove the terminal from their belt or other securing device, disconnect the battery and install/connect a new battery. This usually requires two hands and is a significant disruption to the work schedule.
- A further issue with portable batteries used with wearable and/or portable terminals is that they are susceptible to falling off or out of the terminal during use. As may be appreciated, wearable terminals are subject to rigorous use as the workers scramble around handling various tasks. The terminals are often bumped or otherwise abused in use.
- In the past, batteries have tended to fall off when the terminals or the batteries were bumped. This might cause the battery or its casing to break, particularly on hard, concrete floors, and thereby result in further delays for the worker.
- An additional concern with wearable terminals and also the power supplies therein, is their exposure to harsh environments which may affect their operation. Specifically, many work environments expose the terminals, and therefore the batteries, to moisture. Sometimes such moisture is direct, however, it is often in the form of condensation which may find a pathway into the electrical components of the terminal and also to the battery. For example, in food distribution, the terminals are exposed to the cold of a refrigerator or freezer environment, and then to the ambient warmth or heat and humidity of the rest of the facility. The moisture and condensation may cause electrical shorts and malfunctions in the terminal and in the batteries.
- As such, it is desirable to improve upon the ruggedness of wearable terminals and their power sources. It is also desirable to improve the battery management procedures for active workers and reduce delays associated with power issues. It is further desirable to make workers more efficient and effective.
- The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with a general description of the invention given above, and the detailed description given below, serve to explain the principles of the invention.
-
FIG. 1 is an illustration of a terminal constructed in accordance with the principles of the invention; -
FIG. 2 is a partially-broken away side view of the terminal ofFIG. 1 showing the battery pack in a latched condition; -
FIG. 3 is a partially-broken away side view of the terminal ofFIG. 1 showing the battery pack in an intermediate condition; -
FIG. 4 is a partially-broken away side view of the terminal ofFIG. 1 showing the battery pack in an unlatched condition; -
FIG. 5 is an exploded view of a portion of the terminal ofFIG. 1 showing the assembly of the battery latch mechanism with the terminal housing; and -
FIG. 5A is an exploded view of the battery latch mechanism of the terminal ofFIG. 1 . - Although the invention will be described next in connection with certain embodiments, the invention is not limited to practice in any one specific type of wearable, portable and/or mobile terminal. It is contemplated that the principles of the invention can be used with a variety of electronic devices, including but not limited to wearable terminals for use with computerized inventory systems. The description of the invention is intended to cover all alternatives, modifications, and equivalent arrangements as may be included within the spirit and scope of the invention as defined by the appended claims. In particular, those skilled in the art will recognize that the components of the invention described herein could be arranged in multiple different ways.
- With reference to
FIG. 1 , a wearable, portable and/ormobile terminal 10 of the invention is worn by a worker on abelt 12 or is otherwise associated by another securing device associated with the worker's person. Theterminal 10 is connected to at least oneperipheral device 14, such as a headset or bar code reader, by a length of acord 16 electrically coupled to theterminal 10. Alternatively, eachperipheral device 14 may communicate unidirectionally or bidirectionally with theterminal 10 over a wireless communication link, such as a radiofrequency (RF) link or an infrared (IR) link. -
Such terminals 10 may be used, for example, in warehouse environments where workers are required to retrieve various items within the warehouse. An interior 17 of the terminal 10 houses electronics including a transceiver (not shown) that communicates with a remote central computer by transmitting and receiving information regarding the activities performed by the worker. - For use in a warehouse environment, the terminal 10 incorporates a
removable battery pack 18 and abattery latch mechanism 20 for detachably securing theremovable battery pack 18 to the terminal 10. Thebattery pack 18 supplies electrical power to the electronics of the terminal 10 so that the terminal 10 is wearable by the worker and is portable. As thebattery pack 18 is powered and used in the warehouse environment, the electrical energy stored by thebattery pack 18 is necessarily depleted until the battery capacity is expended. The battery capacity of thebattery pack 18 may be replenished with a battery charger (not shown) having a power supply that can provide a supply of DC current. - With reference to
FIGS. 2 and 5 , the terminal 10 includes aterminal housing 22 having a curved, convexouter surface 23 and a battery-receivingcavity 24 recessed below theouter surface 23. The battery-receivingcavity 24 is dimensioned to receive thebattery pack 18 therein and provides a recessed void generally shaped like a cuboid or a parallelepiped that is external to theterminal housing 22. Theterminal housing 22 includes a pair of opposingside walls end walls base wall 30 having an outwardly-facing substantially planar,rectangular base surface 32 extending transversely between theside walls end walls walls cavity 24.End wall 28 separates achamber 38 provided inside theterminal housing 22 from the battery-receivingcavity 24. Theterminal housing 22 may be molded from a polymer resin. As used herein, inwardly and outwardly directions are referenced relative to thebase surface 32 bounding the battery-receivingcavity 24. An outwardly direction is directed away from thebase surface 32 and an inwardly direction is directed toward thebase surface 32. - A plurality of spring-loaded
electrical contacts 34, of which oneelectrical contact 34 is shown inFIG. 2 , are located within theterminal housing 22 and positioned opposite to the location of thebattery latch mechanism 20. Each electrical contact includes atang portion 36 disposed within thechamber 38 and aspring finger 40 projecting into the battery-receivingcavity 24 from a corresponding one ofmultiple openings 42penetrating end wall 28. Eachspring finger 40 is resiliently deflectable by a force applied in a direction generally toward theend wall 28 with a concomitant storage of elastic energy. Alip portion 44 of theterminal housing 22 projects outwardly fromend wall 28 over a portion of the battery-receivingcavity 24 so as to overhang thespring fingers 40. Eachtang portion 36 is coupled electrically by anindividual conductor 39 with the electronics housed within theterminal housing 22. - An
encapsulant 46, such as an encapsulant selected from among the 1650 Series of encapsulants commercially available from Mereco Technologies Group (West Warwick, R.I.), is injected into thechamber 38 to secure theelectrical contacts 34 in place and to prevent displacing of theelectrical contacts 34 by thebattery pack 18 relative to the battery-receivingcavity 24 back into theterminal housing 22. In one aspect of the invention, theencapsulant 46 also provides waterproofing and dustproofing so that the terminal 10 is sealed against the entry or infiltration of contaminants, including dust, moisture and other liquids, into the interior 17 of theterminal housing 22 throughopenings 42. The battery-receivingcavity 24 is accessible from the exterior of theterminal housing 22 for placement of thebattery pack 18. As a result, theterminal housing 22 is sealed from the ambient environment of the terminal 10 and thebattery pack 18 can be positioned within the battery-receivingcavity 24 without exposing the interior 17 of the terminal housing to the ambient environment. In addition, the sealed nature of theterminal housing 22 permits the terminal 10 to operate in ambient environments entailing exposure to condensation, moisture and other liquids without a significant risk of damage to the electronics housed inside theterminal housing 22. - In certain embodiments, the environmental-sealing of
terminal housing 22 may comply with the IP67 standard of the International Protection (IP) rating system which requires that thehousing 22 be dust proof and that thehousing 22 prevent the entry of water into the interior 17 if immersed in room temperature water to a depth of 1 meter for 30 minutes. The International Electrotechnical Commission standardizes classes of environmental protection for industrial equipment using the IP rating system. - With reference to
FIG. 2 , thebattery pack 18 includes a sealedcase 48, preferably molded from a polymer resin and shaped roughly like a parallelepiped or cuboid, and abattery cell 47, typically a lithium ion battery cell, housed within the sealed environment of the sealedcase 48. The sealedcase 48 is provided with a pair of opposing transverse ends 50, 52, aperipheral edge 53 attransverse end 52, a contact-containingportion 54 protruding outwardly fromtransverse end 50, and an outwardly-facingshoulder 56 formed by the contact-containingportion 54. A convex outwardly-facingsurface 58 of the sealedcase 48 has a curvature that conforms with the curvature of theouter surface 23 of theterminal housing 22 when thebattery pack 18 is inserted in the battery-receivingcavity 24. An inwardly-facingplanar surface 60 of thebattery pack 18 provides a substantially abutting contact with theplanar base surface 32 of the battery-receivingcavity 24 when thebattery pack 18 is inserted into battery-receivingcavity 24. - A set of cylindrical
conductive contacts 62, of which oneelectrical contact 62 is visible inFIG. 2 , is disposed in the contact-containingportion 54 of the sealedcase 48 ofbattery pack 18. Each of theconductive contacts 62 is terminated by a disk-shapedflat pad 64 facing outwardly fromtransverse end 50. The set ofconductive contacts 62 participates in electrically coupling the battery cell with the electronics disposed within theterminal housing 22 of the terminal 10. To that end, eachflat pad 64 of thebattery pack 18 is electrically coupled with a corresponding one of thespring fingers 40 of the terminal 10. The physical contact between theflat pads 64 andspring fingers 40 is operative for supplying a good electrical contact adequate for transferring electrical current with minimal resistive loss. Upon engagement of thebattery pack 18 within the battery-receivingcavity 24 in a latched condition, the terminal 10 operates via electrical power supplied from the battery cell of thebattery pack 18. - The sealed
case 48 of thebattery pack 18 is sealed against the entry of moisture or other liquids. To that end, the sealedcase 48 may be molded as multiple sections and subsequently joined by any suitable technique, such as ultrasonic welding, that provides a water-tight enclosure. Theelectrical contacts 62 provide the only external connections withbattery cell 47 and have a liquid-tight seal with the corresponding openings in the contact-containingportion 54. For example, theelectrical contacts 62 may be press-fit into the corresponding openings in the contact-containingportion 54 or the sealedcase 48 may be molded about theelectrical contacts 62. - In addition, the sealed
case 48 of thebattery pack 18 is free or any projecting elements, such as tabs or the like, that would otherwise cooperate with a latching mechanism. The absence of such projecting elements makes thebattery pack 18 less prone to damage from, for example, being dropped onto a hard surface that would prevent positive engagement withterminal 10. As a result, thebattery pack 18 is sturdy and robust because the battery-receivingcavity 24 that provides the positive engagement with thebattery latch mechanism 20 is not susceptible to damage that would result in an inability to mechanically couple thebattery pack 18 with the terminal 10. - With continued reference to
FIG. 2 , theperipheral edge 53 of sealedcase 48 further includes alip 66 and alatch cavity 68 with an entrance or opening therein oriented for engagement with thebattery latch mechanism 20 when thebattery pack 18 is inserted into the battery-receivingcavity 24. Thelip 66 andlatch cavity 68 extend transversely into and out of the plane of the page ofFIG. 2 . Thelatch cavity 68 has a triangular cross-sectional profile in a transverse direction. Thelip 66 includes an outwardly-facingplanar surface 70 that defines a lower surface of thelatch cavity 68 and an inwardly-facinginclined camming surface 72 of thelip 66 oriented downwardly toward thebase wall 30 of the battery-receivingcavity 24 when thebattery pack 18 is inserted into the battery-receivingcavity 24. Theinclined camming surface 72 is coextensive with theplanar surface 70 along a sharedtransverse edge 74. - With reference to
FIGS. 2, 5 and 5A, thebattery latch mechanism 20 is positioned within the battery-receivingcavity 24 and proximate to endwall 27. Thebattery latch mechanism 20 is actuatable between to provide a latched condition in which thebattery pack 18 is secured within the battery-receivingcavity 24 and a latched condition in which thebattery pack 18 is readily removable from the battery-receivingcavity 24. Thebattery latch mechanism 20 includes a latchingmember 76 movable between an extended position (FIGS. 2 and 4 ) and a retracted position (FIG. 3 ), an actuator orrelease button 78 in the form of a pushbutton depressible to cause the latchingmember 76 to move between the extended and retracted positions, and abracket member 80 pivotally coupling therelease button 78 with theterminal housing 22 of the terminal 10. Thebracket member 80 of thebattery latch mechanism 20 is secured to theterminal housing 22 withconventional fasteners 81 or the like. - The latching
member 76, therelease button 78, and thebracket member 80 may be molded from a polymer resin. In particular, therelease button 78 and thebracket member 80 may be molded from any polymer resin having good low temperature characteristics useful when the terminal 10 is exposed to a low temperature ambient environment. For example, therelease button 78 and thebracket member 80 may be formed from a mixture of polycarbonate with either polybutylene terephthalate (PBT) or polyethylene terephthalate (PET), such as the family of such polymer resins available commercially under the tradename XENOY® from GE Plastics (Seven Hills, Ohio). - With continued reference to
FIGS. 2, 5 and 5A, a biasingmember 82, such as a compression spring, urges or biases the latchingmember 76 to the extended position when therelease button 78 is not depressed. One end of the biasingmember 82 fits over aguide post 83 formed on therelease button 78. An opposite end of the biasingmember 82 abutsend wall 27 of theterminal housing 22. The biasingmember 82 is constrained against lateral movement by a pair of transversely-spacedguides base surface 32 and a pair of transversely-spacedprongs bracket member 80. While the biasingmember 82 is illustrated as a compression spring, the invention contemplates that other types of springs, plastic cantilevers, or elastic members may also be used for biasing the latchingmember 76 toward the extended position. - The
release button 78 is pivotal relative to thebracket member 80 about a transverse axis of rotation defined by a transversely-spaced pair of pivot pins 88, of which onepivot pin 88 is shown, that also secure therelease button 78 mechanically with thebracket member 80. A pair of transversely-spacedflanges release button 78 and project inwardly toward thebase surface 32. The transverse space between theflanges prongs bracket member 80. Theflanges grooves 91, 92 provided on the latchingmember 76. When therelease button 78 is depressed, the angular rotation of therelease button 78 about the pivot pins 88 is converted by the engagement between theflanges grooves 91, 92 into a longitudinal displacement of the latchingmember 76 that moves the latchingmember 76 toward theend wall 27 from the extended position to the retracted position. Similarly, when the latchingmember 76 is in the retracted position and therelease button 78 is released, the angular rotation of therelease button 78 in the opposite angular direction about the pivot pins 88 is converted into a longitudinal displacement of the latchingmember 78 away from theend wall 27 due to the engagement between theflanges grooves 91, 92 and the restoring force supplied by the biasingmember 82 so that the latchingmember 76 moves from the retracted position (FIG. 3 ) to the extended position (FIGS. 2 and 4 ). - An inwardly-projecting
flange 93 provided on therelease button 78 abuts an upwardly-facing surface of a transversely-oriented, outwardly-facingslot 94 provided in the latchingmember 76.Flange 93 has a longitudinally spaced relationship withflanges member 76 is slidingly captured between the tip of theflange 93 and thebase surface 32 so that the latchingmember 76 cannot cantilever outwardly relative to the engagement between theflanges grooves 91, 92 during movement between the extended and retracted positions. - With continued reference to
FIGS. 2, 5 and 5A, a battery-engagingelement 96 projects from the latchingmember 76 toward the interior of the battery-receivingcavity 24 of the terminal 10. The battery-engagingelement 96 has aplanar surface 98 facing thebase surface 32 of the battery-receivingcavity 24 and aninclined camming surface 100 positioned opposite to theplanar surface 98. The battery-engagingelement 96 is captured within thelatch cavity 68 when thebattery pack 18 is present in the battery-receivingcavity 24 and the latchingmember 76 is in the extended position (FIG. 2 ). In particular, theplanar surface 98 of the battery-engagingelement 96 contacts theplanar surface 70 of thelip 66 for securing thebattery pack 18 within the battery-receivingcavity 24 in the latched condition. The engagement between theplanar surfaces battery pack 18 relative to theterminal housing 22. When the latchingmember 76 is in the retracted position (FIG. 3 ), the battery-engagingelement 96 is not captured within thelatch cavity 68 and thebattery pack 18 is movable within the battery-receivingcavity 24 due to the extension of thespring fingers 40 and the associated bias force applied again theflat pads 64. Theperipheral edge 53 of the battery pack also pushed slightly upward out of the battery-receivingcavity 24. It is contemplated by the invention that additional springs, plastic cantilevers, or other elastic members may be used to apply motive force to thebattery pack 18 in addition to, or instead of, thespring fingers 40. - The inclination angle of the
inclined camming surface 100 of the battery-engagingelement 96 is complementary to the inclination angle of theinclined camming surface 72 of thelip 66. Thebattery pack 18 is placed in the unlatched condition when the latchingmember 76 is fully in the extended position and the inclined camming surfaces 72, 100 are abutting. In the unlatched condition, thebattery pack 18 is lifted by the engagement between the inclined camming surfaces 72, 100 and may be manually removed from the battery-receivingcavity 24. Manual removal is facilitated by the outward projection of anupper corner 102 ofperipheral edge 53 of thebattery pack 18 above theouter surface 23 of theterminal housing 22. Theupper corner 102 is readily grasped by a worker for removal of thebattery pack 18. - With continued reference to
FIGS. 2, 5 and 5A, an outwardly-facingsurface 104 of therelease button 78 has a convex curvature that generally conforms with the convex curvatures of theouter surface 23 of theterminal housing 22 and the outwardly-facingsurface 58 of the sealedcase 48 of thebattery pack 18. The portion of theterminal housing 22 surrounding therelease button 78 operates as a guard to prevent inadvertent latching and unlatching from incidental contact with outwardly-facingsurface 104. As a result, a worker is generally required to make a specific and deliberate effort to apply an inward force to pivot therelease button 78 for unlatching thebattery pack 18. This, therefore, reduces the likelihood of damage to thebattery pack 18 from inadvertently falling out of theterminal housing 22. - Provided on the
release button 78 is a set of finger grips 106 that reduce slippage with the worker's finger when therelease button 78 is pressed to actuate thebattery latch mechanism 20. The finger grips 106 project a short distance outwardly above thesurface 104 of therelease button 78 that is insufficient to allow inadvertent actuation of therelease button 78 and insufficient to significantly interrupt the smooth, curved contour presented collectively bysurfaces - In use and with reference to
FIGS. 2-4 , thebattery pack 18 is initially in the latched condition shown inFIG. 2 with the battery-engagingelement 96 of the latchingmember 76 engaged within thelatch cavity 68 of the sealedcase 48 ofbattery pack 18. To remove thebattery pack 18 from the battery-receivingcavity 24, an inward force is applied to push or depress therelease button 78 in a general direction indicated by arrow 108 inFIG. 3 . The inward force causes therelease button 78 to pivot about pivot pins 88 relative to thebracket member 80. The pivoting of therelease button 78 displaces the latchingmember 76 towardwall 27 in a general direction indicated byarrow 110 inFIG. 3 due to the engagement betweenflanges grooves 91, 92 from the extended position toward the retracted position. The biasingmember 82 is compressed for applying a restoring force after the inward force applied to releasebutton 78 is removed. When the latchingmember 76 is fully in the retracted position, the battery-engagingelement 96 is released from thelatch cavity 68 and thebattery pack 18 is released or freed for movement within the battery-receivingcavity 24. - The
spring fingers 40 of theelectrical contacts 34, which are compressed when thebattery pack 18 is latched, collectively exert a lateral propulsive or motive force against thebattery pack 18 that is directed away fromend wall 28 as the spring compression is released. The lateral motive force displaces or moves thebattery pack 18 toward thebattery latch mechanism 20 in a direction generally indicated byarrow 112 inFIG. 3 . As thebattery pack 18 moves away fromend wall 28, acamming surface 105 on theperipheral edge 53 of sealedcase 48 engages amating camming surface 103 on theterminal housing 22, causing the end of thebattery pack 18 to elevate in a direction indicated byarrow 114 inFIG. 3 so that thecorner 102 and elevated end of thebattery pack 18 project above theouter surface 23 of theterminal housing 22 of theterminal housing 22 in the unlatched condition. Theopposed end 50 of sealedcase 48 remains captured between thelip portion 44 andbase wall 30 of theterminal housing 22. - The cooperating camming surfaces 103, 105 at the interface between
battery pack 18 andterminal housing 22 work with the propulsive force supplied by theelectrical contacts 34 to lift the end of thebattery pack 18 partially out of the battery-receivingcavity 24 wherebattery pack 18 can be grasped using the same finger that actuated therelease button 78. Thedepressed release button 78 provides a space for the finger to contact thecorner 102 and elevated end of thebattery pack 18. This makes possible a rapid one-hand removal of thebattery pack 18. - When the inward force applied to the
release button 78 is removed as shown inFIG. 4 , the restoring force applied by the biasingmember 82 pivots therelease button 78 to its initial position and the latchingmember 76 moves from the retracted position back toward the extended position. As a result, theinclined camming surface 100 of the latchingmember 76 slidingly engages theinclined camming surface 72 of thebattery pack 18 and displaces or lifts theperipheral edge 53 of thebattery pack 18 further outwardly relative to the battery-receivingcavity 24 in the general direction ofarrow 114. As a result, thecorner 102 of theperipheral edge 53 projects an additional distance above the contour of theouter surface 23 of theterminal housing 22 sufficient for removing thebattery pack 18 from the battery-receivingcavity 24. The continued engagement between the inclined camming surfaces 72, 100, after the sliding relative movement therebetween ceases, holds thebattery pack 18 in the unlatched condition in which thebattery pack 18 can be easily disengaged from the battery-receivingcavity 24 and removed from the terminal 10 by single-handed manual manipulation. The hand of the worker is positioned to cradle thebattery pack 18 during removal from terminal 10 so that the risk of dropping is reduced. The removal of thebattery pack 18 may be accomplished with one hand and while the terminal 10 remains secured to belt 12. - The
battery pack 18 is replaced by inserting theend 50 of thebattery pack 18 into the battery-receivingcavity 24 so that theflat pads 64 contact thespring fingers 40 and theshoulder 56 of thebattery pack 18 is captured between thelip portion 44 andbase surface 32 of theterminal housing 22. An inward force applied to the sealedcase 48 adjacent to end 52 toward thebase surface 32 causes the latchingmember 76 to move from the extended position to the retracted position against the biasing force of the biasingmember 82 by sliding contact between the inclined camming surfaces 72, 100. As thebattery pack 18 is further pressed into the battery-receivingcavity 24,inclined camming surface 100 slides overtransverse edge 74 and the latchingmember 76 is urged by the biasingmember 82 away from theend wall 27 so that the battery-engagingelement 96 protrudes into the latchingcavity 68. Contact betweenplanar surfaces battery pack 18 at the proper insertion depth in the battery-receivingcavity 24. When thebattery pack 18 is thus completely inserted into the battery-receivingcavity 24, outward movement of thebattery pack 18 is prevented and each of theflat pads 64 of thebattery pack 18 is electrically coupled with a corresponding one of thespring fingers 40 of the terminal 10. The installation of thebattery pack 18 may be accomplished with one hand and while the terminal 10 remains secured to belt 12. Thebattery pack 18 fits snugly in the battery-receivingcavity 24 so that movement of thebattery pack 18 is restricted and the engagement between thespring fingers 40 andflat pads 64 is maintained as the terminal 10 is transported by the worker for use in the warehouse environment. - According to the principles of the invention, the battery pack can be quickly, easily, and effectively attached to the terminal and removed from the terminal. As a result, battery management procedures are simplified for active workers and delays associated with power issues are reduced. The principles of the invention improve worker efficiency and effectiveness. In addition, the principles of the invention act to ruggedize the terminal and battery pack so that operational lifetimes are lengthened.
- The battery latch mechanism and battery pack of the invention cooperate to provide a desired combination of substantial resistance to inadvertent detachment from the terminal and efficient battery replacement. Specifically, the battery pack is not overly susceptible to falling off or out of the terminal during use because of the secure attachment to the terminal. Moreover, the small surface area of the outwardly-facing surface of the release button that makes the release button resistant to actuation by inadvertent applied forces. In addition, the conforming surface contours of the terminal housing, battery pack and release button reduce the likelihood that contact with an object will dislodge the battery pack from the battery-receiving cavity. As a result, delays in worker activities resulting from unintended separation of the battery pack from the terminal are reduced. In addition, the useful lifetime of the battery pack is extended because the battery pack is less likely to be inadvertently separated from the terminal and damaged by impact with, for example, a concrete floor.
- The battery pack is removable from the battery-receiving cavity with a minimal applied force yet is retained with a sufficient retaining force, when the latch mechanism is initially actuated, so that the battery pack does not readily disengage from the terminal during an operation exchanging a depleted battery pack for a charged battery pack. The magnitude of the applied force required to separate the battery pack from the terminal, when the battery latch mechanism is disengaged from the battery pack, permits a worker to replace a depleted battery pack in a one-handed operation while the terminal remains attached to the worker. As a result, the tediousness entailed in the removal and replacement of the battery pack is significantly reduced by the improved ergonomics and the impact to the worker's work schedule is lessened.
- According the principles of the invention, the electronics within the terminal are isolated from exposure to harsh ambient operating environments in which the terminal is being used. In addition, the battery pack provides a sealed environment that isolates the battery cell from the infiltration of moisture and other contaminants from the operating environment or condensation arising from changes in the humidity level and temperature of the operating environment. As a result, the terminal and battery pack are significantly less susceptible to electrical shorts and malfunctions.
- While the present invention has been illustrated by the description of the various embodiments thereof, and while the embodiments have been described in considerable detail, it is not intended to restrict or in any way limit the scope of the appended claims to such detail. Additional advantages and modifications will readily appear to those skilled in the art. The invention in its broader aspects is therefore not limited to the specific details, representative apparatus and methods and illustrative examples shown and described. Accordingly, departures may be made from such details without departing from the scope or spirit of Applicants' general inventive concept.
Claims (20)
1. A wearable, mobile and/or portable terminal powered by an environmentally-sealed battery pack, comprising:
a terminal housing having an interior and an external battery-receiving cavity configured to removably receive a battery pack, said interior of said terminal housing being sealed from the ambient environment surrounding said terminal housing; and
a latch mechanism within the battery-receiving cavity being operative to latchingly engage and disengage the battery pack within said battery-receiving cavity and mounted such as not to impair said environmental sealing of the terminal interior,
said environmental sealing of said terminal being effective to preclude entry of water into the interior of the terminal when the terminal is immersed.
2. The terminal of claim 1 wherein said terminal housing includes a chamber proximate to said battery-receiving cavity, an end wall separating said chamber from said battery-receiving cavity, and a plurality of first electrical contacts extending through a corresponding plurality of openings in the end wall.
3. The terminal of claim 2 wherein said openings are sealed to seal said terminal housing from the environment proximate the cavity.
4. The terminal of claim 3 further comprising:
an encapsulant filling said chamber to seal said chamber from the environment within said cavity.
5. The terminal of claim 1 further comprising a battery pack having a sealed case and a plurality of second electrical contacts sealingly extending through said sealed case to contact said plurality of first electrical contacts when said battery pack is received within said battery-receiving cavity.
6. The terminal of claim 5 wherein said battery pack is sealed against the entry of moisture.
7. The terminal of claim 1 wherein said terminal housing is sealed from the ambient environment effective to preclude significant entry of water upon immersion to a depth of one meter for thirty minutes.
8. A combination including the terminal of claim 1 and an environmentally sealed battery pack configured to mate said cavity and to be latched and unlatched by said latch mechanism.
9. A mobile voice-directed system having a quick-change arrangement for a battery pack with opposite first and second ends, comprising:
a terminal having an environmentally sealed housing with exposed electrical contacts located in a shallow external battery cavity, the battery cavity and electrical contacts being configured to mate with a battery pack having an environmentally sealed casing adapted to conform to the housing cavity and exposed battery contacts adapted to mate with the terminal contacts; and
a battery latch mechanism mounted in the terminal cavity and environmentally isolated from a terminal interior, the battery latch mechanism including a finger-depressible pushbutton and being configured such that depressing the pushbutton releases the battery pack and exposes the battery pack for quick and easy removal with the finger used to depress the pushbutton,
said environmental sealing of said terminal being effective to preclude entry of water into the interior of the terminal when the terminal is immersed.
10. The system of claim 9 further comprising:
a battery lifter arrangement configured to elevate the first end of the battery pack when the battery latch mechanism is unlatched.
11. The system of claim 10 wherein the battery lifter arrangement includes a battery-elevating camming structure at an interface between the terminal housing and the first end of the battery pack, and a spring biasing arrangement at the location of the second end of the battery pack which cooperates with the camming structure to cause the first end of the battery pack to elevate when the battery latch mechanism is unlatched.
12. The system of claim 11 wherein the spring biasing arrangement comprises the terminal electrical contacts.
13. The system of claim 8 wherein the latching member is a spring-biased slider mounted to reciprocate.
14. The system of claim 8 wherein the pushbutton is pivotally mounted, and the battery latch mechanism includes a linearly reciprocable slider configured to latchingly engage the battery pack, and a motion converter for converting rotary motion of the pushbutton to reciprocatory motion of the latching member.
15. A combination including the system of claim 8 and an environmentally sealed battery pack configured to fit said cavity and to be latched and unlatched by said latch mechanism.
16. The system of claim 8 wherein the battery latch mechanism includes a member which latchingly engages the battery pack when the battery latch mechanism is latched, which disengages the battery pack when the battery latch mechanism is unlatched by depressing the pushbutton, and which non-latchingly re-engages the battery pack when it is an elevated state to resist its falling back into the battery-receiving cavity.
17. For use with a mobile terminal having an environmentally sealed terminal housing with an external surface, a camming surface, and a shallow external battery cavity with exposed electrical contacts, a quick-change battery pack comprising:
an environmentally sealed casing having exposed electrical contacts configured and located to mate with the exposed electrical contacts in the external battery cavity, the casing having a first surface portion configured to physically mate with the battery cavity, a second surface portion configured to blend with the external surface of the terminal housing such that the battery pack forms part of the terminal exterior, and a camming surface adapted to mate with the camming surface on the terminal housing to assist in elevating a predetermined end of the casing for removal from the battery cavity, the casing having a contour at the predetermined end of the battery pack which is adapted to facilitate removal of the battery pack from the battery cavity.
18. The battery pack of claim 17 sealed to preclude significant entry of water upon immersion to a depth of one meter for thirty minutes.
19. The battery pack of claim 17 wherein the casing is configured at the predetermined to be engaged by a latch mechanism mounted in the battery cavity of a terminal.
20. A mobile device having a quick-change battery pack arrangement, comprising:
a terminal having an environmentally sealed housing with a shallow external battery cavity and exposed terminal electrical contacts located in the external battery cavity;
a battery pack having an environmentally sealed casing with a first surface portion configured to conform to the battery cavity and exposed battery contacts adapted to mate with the terminal electrical contacts, and a second surface portion configured to blend with an external surface of the terminal housing such that the battery pack casing forms part of the terminal housing exterior; and
a battery latch mechanism mounted in the terminal cavity, the battery latch mechanism including a finger-depressible pushbutton flush with the terminal housing exterior and being configured such that depressing the pushbutton releases the battery pack and creates a recess which exposes the battery pack for quick and easy removal with the finger used to depress the pushbutton,
said environmental sealing of said terminal and of said battery pack each being effective to preclude entry of water when the terminal is immersed to a depth of one meter for thirty minutes.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US11/186,592 US20050272401A1 (en) | 2002-06-27 | 2005-07-21 | Environmentally-sealed portable terminal |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US10/185,334 US7052799B2 (en) | 2002-06-27 | 2002-06-27 | Wearable terminal with a battery latch mechanism |
US11/186,592 US20050272401A1 (en) | 2002-06-27 | 2005-07-21 | Environmentally-sealed portable terminal |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US10/185,334 Division US7052799B2 (en) | 2002-06-27 | 2002-06-27 | Wearable terminal with a battery latch mechanism |
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US20050272401A1 true US20050272401A1 (en) | 2005-12-08 |
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US10/185,334 Expired - Fee Related US7052799B2 (en) | 2002-06-27 | 2002-06-27 | Wearable terminal with a battery latch mechanism |
US11/186,592 Abandoned US20050272401A1 (en) | 2002-06-27 | 2005-07-21 | Environmentally-sealed portable terminal |
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US10/185,334 Expired - Fee Related US7052799B2 (en) | 2002-06-27 | 2002-06-27 | Wearable terminal with a battery latch mechanism |
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US20040001997A1 (en) | 2004-01-01 |
US7052799B2 (en) | 2006-05-30 |
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Legal Events
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AS | Assignment |
Owner name: PNC BANK, NATIONAL ASSOCIATION, AS AGENT, PENNSYLV Free format text: SECURITY AGREEMENT;ASSIGNOR:VOCOLLECT, INC.;REEL/FRAME:019458/0223 Effective date: 20050713 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |
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AS | Assignment |
Owner name: VOCOLLECT, INC., PENNSYLVANIA Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:PNC BANK, NATIONAL ASSOCIATION;REEL/FRAME:025912/0205 Effective date: 20110302 |