WO2000048871A1

WO2000048871A1 - Load floor latch

Info

Publication number: WO2000048871A1
Application number: PCT/US2000/004541
Authority: WO
Inventors: Gert Berg
Original assignee: Southco, Inc.
Priority date: 1999-02-22
Filing date: 2000-02-22
Publication date: 2000-08-24
Also published as: AU3005200A; KR100638082B1; KR20010101787A; KR100704477B1; EP1163131A1; EP1224099A1; AU3005100A; WO2000048872A1; EP1224099A4; EP1224099B1; WO2000048870A1; KR20020016616A; AU3501600A

Abstract

A pawl latch (10) for securing a first member to a second member, such as, for example, a closure panel to a frame or enclosure compartment, the latch (10) including a housing (11) with a living spring pawl member (13) connected thereto, and a handle (12) which has fingers (47, 48) which engage the pawl (13) to retract the pawl (13) from engagement with a keeper member or surface to open the latch (10). A locking mechanism (15) is also provided for securing the latch (10) from unauthorized opening, the locking mechanism (15) having a locking element (23) which holds the handle (12) against movement and prevents the retraction of the pawl (13) with the handle (12).

Description

LOAD FLOOR LATCH

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to the field of latches and more particularly to slam-action latches in which a handle is lifted to release the latch.

2. Brief Description of the Prior Art

Slam-action latches are known in the art and are employed in a number of applications for securing one or more panels together. Generally, latches coming within this category operate by forcing a pawl into engagement with a keeper. For example, where a first panel member has a

pawl mounted on it and a second panel member, such as, for example, a cabinet, has a keeper mounted thereon, slamming shut the first panel member against the second panel member can secure the panels with the latch.

In many instances, separately provided spring members are utilized to bias the pawl into engagement with a keeper member. Thus, when a panel to which the latch is installed is closed, the pawl engages a keeper. The utilization of a separately provided spring member often increases the

cost of the latch and the time for assembly or construction of the latch. In

some cases, complex mechanisms are required to maintain spring members and align them with a pawl so the pawl can be regulated to operate and engage and disengage a keeper.

A need exists for a latch which can provide an improvement over the

prior art in that it will be less costly to produce and less time-consuming to assemble.

SUMMARY OF THE INVENTION

The present invention provides a novel slam latch having a handle and a housing with a pawl member which is disposed to engage a keeper

member to secure a first member, such as a door or floor panel, to a second member, such as a frame or floor. Preferably, the latch can be installed on a closure panel and the keeper member on another panel or frame. The latch

handle, upon actuation, retracts the pawl from engagement with a keeper member by contacting the pawl member and forcing the pawl member out

from engagement with the keeper to release the latch and permit the closure panel to be opened. The pawl member is a living spring member which

permits it to be deflected by engagement with the handle. The pawl member is connected to the housing and extends therefrom. Handle mounting

elements pivotally connect the handle to the housing. The pawl member is provided as a flexible member, and preferably is

a living spring member, which can be deflected by the handle. A locking

mechanism is employed to permit locking of the latch so that the pawl will

not be released from the keeper member. An object of the present invention is to provide a novel latch which

can secure one or more members together, such as panels or the like, for selective release by actuating a handle of the latch.

Another object of the present invention is to accomplish the above objects by providing a spring-biased latch which can be closed by slam- action.

Another object of the present invention is to provide a latch which can be used in connection with panels of vehicles to regulate access to and from an area or compartment, such as, for example, a floor panel and a floor

storage compartment.

Another object of the present invention is to provide a novel latch

having a pawl member which is also a living spring member.

Another object of the present invention is to provide a locking mechanism which can secure the latch against unauthorized opening. Another object of the present invention is to accomplish the above objects wherein the handle is positioned by positioning elements relative to the housing.

BRIEF DESCRIPTION OF THE DRAWING FIGURES

Fig. 1 is a top plan view of a latch according to the present invention.

Fig. 2 is a bottom plan view of the latch of Fig. 1, shown with the

retaining member partially installed thereon. Fig. 3 is a rear parallel perspective view of the handle of the latch shown in Figs. 1 and 2, shown with a lockplug installed thereon, as viewed from the left.

Fig. 4 is a parallel perspective view of the handle of the latch of Figs. 1-3, as viewed from the bottom.

Fig. 5 is a parallel perspective view of the handle shown in Fig.4, as

viewed from the top.

Fig. 6 is a bottom plan view of the latch of Fig. 1 shown with the retaining member in the unlocked position. Fig. 7 is a bottom plan view of the latch of Fig. 1 shown with the

retaining member in the locked position.

Fig. 8 is a left side, parallel perspective sectional view of the latch of Fig. 1, shown in the closed position.

Fig. 9 is a left side, parallel perspective sectional view of the latch of Figs. 1-5 shown with the handle in a partially raised position.

Fig. 10 is a left side, parallel perspective sectional view of the latch

of Figs. 1-5 shown with the handle in its fully raised position and the pawl

member retracted.

Fig. 11 is an alternate embodiment of a handle for use with the latch according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Reference being made to Fig. 1, where a latch 10 according to the

present invention is shown comprising a latch body or housing 11. a handle 12 and a pawl member 13. The housing 11 has an upper flange 14 which defines the perimeter of the latch 10. As shown in Fig. 2, mounting means is provided on the housing 1 1, comprising bores 20, 21, which, for example,

can be threaded to receive a matingly threaded bolt (not shown) for attachment of the latch 10 to a panel member (not shown). It will be understood that any suitable mounting members, such as, rivets, screws, pins, barbs and the like can be used to secure the housing 11 to a panel.

Preferably, the latch 10 can be installed on a floor panel of a vehicle to regulate access to and from a compartment. Locking means is also provided to lock the latch 10 against unauthorized opening. The locking means is shown comprising a lockplug 15 which has a key slot 16 therein. The locking means further includes retaining means for retaining the lockplug 15 on the housing 11. The retaining means is shown in Fig. 2 comprising a retaining member 23 which is disposed on a connecting end 27 of the lockplug 15 located on the

lockplug end opposite of the key slot 16 end. Fig. 2 shows the retaining

member 23 during assembly, where it is partially installed on the lockplug

connecting end 27. The retaining member 23 has an assembly slot 24 having a circular slot portion 25 and a narrow slot portion 26 extending from the circular slot portion 25. The circular slot portion 25 is configured for

placement over the connecting end 27 of the lockplug 15.

Preferably, the retaining member 23 includes connecting means for

connecting it to the connecting end 27 of the lockplug 15 to secure it thereto for corresponding rotational movement with the lockplug 15, i.e., when the lockplug key (not shown) is rotated in the key slot 16. The retaining member connecting means is shown comprising a pair of tapered

walls 30, 31 provided on opposite sides of the narrow slot portion 26. The lock plug 15, preferably, is configured for snap-fit installation of the retaining member 23 onto the connecting end 27 by first positioning the circular slot portion 25 over the lockplug connecting end 27, and then sliding the retaining member 23, from its Fig. 2 position, over the

connecting end 27 of the lockplug 15, to its installed position as shown in Figs. 6 and 7. The retaining member 23 has a first cam slot 34 with an opening 39. Likewise, the retaining member 23 also has a second cam slot 35 having an enlarged slot portion to facilitate installation of the retaining member 23 on the lockplug connecting end 27. First and second pin members, respectively, 36, 37 are provided on the housing 1 1 to facilitate holding the retaining member 23. The opening 39 of the first cam slot 34 allows the first cam slot 34 to be moved along the first pin member 36, and

the enlarged slot portion of the second cam slot 35 facilitates installation and movement of the second cam slot 35 along the second pin member 37.

As shown in Fig. 3, the lockplug 15 preferably has an annular groove 28 disposed at the connecting end 27. This permits the retaining member 23

to slide along the groove 28 and snap the narrow slot portion 26 onto the

connecting end 27. The tapered walls 30, 31 maintain the retaining member

23 on the connecting end 27 of the lockplug 15. Preferably, the groove 28 has at least two vertical components, such as the vertical wall 29, only one side being shown, there being an identical vertical wall portion on the opposite side.

Referring to Figs. 4 and 5, the handle 12 is provided with an aperture 70 to permit the lockplug 15 to be installed therein. A pair of locking legs 71, 72 is disposed on opposite sides of the aperture 70. The

locking legs 71, 72 preferably comprise generally L-shaped members. The lockplug 15 is provided with an upper ring portion 75 which is disposed to rotate with a key (not shown). The lockplug 15 has notches 73, 74 disposed in the upper ring portion 75 which are rotated to block the locking legs 71, 72 of the handle 12 and to release the locking legs 71, 72 when the notches 72, 73 are aligned with the locking legs 71, 72. In Fig. 1, the locking legs 71, 72 are shown positioned in a horizontal alignment. In this (Fig. 1) position, the handle 12 is restrained from lifting relative to the housing 11, and the pawl member 13 cannot be moved to unlatch the latch 10 from a keeper.

Fig. 3 shows the position of the handle locking legs 71, 72, which

are vertically disposed in relation to the notches 72, 73. When the upper ring portion 75 of the lockplug is rotated in either a clockwise or

counterclockwise direction, and the notches 72, 73 are aligned with the locking legs 71, 72 of the handle (Fig. 3), the handle 12 can then be lifted

for pivoting to engage the pawl member 13. The pawl member 13 is

retracted rearwardly into the housing when the handle 12 is fully pivoted (as shown best in its Fig. 10 position). The housing 11 has a cut-out portion 32 disposed in the vicinity of the pawl member 13 to permit the pawl member

13 to be retracted with the handle 12 and/or deflected inwardly, toward the housing 11.

Preferably, the housing includes flange members 77, 78 disposed on each side of the pawl member 13 and extending parallel to the length of the

pawl member 13. The flange members 77, 78 are provided to facilitate clearance of the latch 10 with a keeper member or surface.

Referring now to Figs. 6 and 7, the retaining member 23 is installed on the connecting end 27 of the lockplug 15. The housing first pin member 36 and second pin member 37 extend outwardly from the rear surface 38 of the housing 11. The first cam slot 34 and second cam slot 35 are positioned for movement along the respective first pin member 36 and second pin member 37 when the lockplug 15 is operated by turning a key (not shown)

to rotate the upper ring member 75. The retaining member 23 rotates with

the upper ring member 75 of the lockplug 15. The retaining member 23 is shown in Fig. 6, with the lock in the open position, and can be rotated from

that position, along the direction of arrow "a," to the latch's locked position

(Fig. 7). When the lockplug 15 is in the locked position, the lockplug upper

ring member 75 secures the handle 12 against pivotal movement, i.e. lifting,

by retaining the locking legs 71, 72 of the handle 12.. During the movement from the open position to the closed or locked position, the retaining member 23 travels along the first and second pin members 36, 37 which facilitate guiding of the retaining member movement. The retaining member

23 secures the lockplug 15 to the housing 11 and prevents the lockplug 15 from otherwise being lifted out of the latch 10 with the handle 12. When the lockplug 15 interferes with the locking legs 71, 72 of the handle 12, then the

handle 12 is not able to freely move and it cannot pivot to engage the pawl member 13.

Reference now being made to Fig. 8, wherein the pawl member 13 is shown having a leg portion 40 which is connected to the housing 11 and extends downwardly from the housing flange 14. Preferably, the pawl member 13 comprises a living spring member, which, as shown in Fig. 10, permits the pawl member 13 to be moved along a generally radial path through the movement of the leg portion 40 when the handle 12 is actuated. The pawl leg portion 40 has an engaging foot 41 which is provided for engaging a keeper member, and an actuating foot 42 which the handle 12 engages to deflect the pawl member 13 away from the keeper so the latch 10 can be opened. As shown best in Fig. 8, the pawl actuating foot 42 has a pair of slots 44, 45 disposed therein. The handle 12 is shown in a

partially lifted position and has actuating means for engaging the pawl

member 13. Preferably, the actuating means comprises a pair of fingers 47, 48 which engage the actuating foot 42 of the pawl member 13 to retract the

pawl member 13 and draw it into the housing 11 away from the keeper

member. The actuating fingers 47, 48 are provided to grip the pawl member 13 by protruding into the slots 44, 45, as shown in Figs. 9 and 10. Preferably, the handle 12 has a lifting portion 50 which can be gripped by a user to pivot the handle 12 for engagement with the pawl member 13. The handle 12 is pivotally connected to the housing 11 for pivotal movement relative thereto. Referring again to Figs. 3-4, the handle

12 includes positioning tabs 51, 52 disposed thereon and provided on opposite sides of the pawl member 13. The housing 11, referring to the views of Figs. 8-10, has a pair of locking arms 54, 55 which are disposed on

opposite sides of the pawl member 13 to correspond to the locations of the handle positioning tabs 51, 52. The locking arms 54, 55 preferably are resilient members and can comprise spring arms which are provided for deflection relative to the housing 11. The locking arms 54, 55 each have a stop element 56, 57, respectively, disposed at each upper end thereof. The stop elements 56, 57 of the locking arms 54, 55 cooperate to engage the positioning tabs 51, 52, to retain the handle 12 in a flat position, level with

the housing flange 14, when the latch 10 is secured to a keeper or in its

closed position, as shown in Figs 1 and 8.

Referring to Fig. 9, the locking arms 54, 55 further can facilitate the

positioning of the handle 12 for unlatching. The handle 12 is shown having

tread means comprising a series of raised projections 60 disposed on the top

surface of the handle 12. To open the latch 10, the handle 12 can be

depressed by pressing on the raised projections 60 to pivot the handle actuating fingers 47, 48 in the direction of the pawl actuating foot 42. The

stop elements 56, 57, can be disposed to maintain the handle 12 in a partially raised position (Fig. 9) to permit further lifting of the handle 12 with the lifting portion 50, which is accessible when the handle 12 is partially raised. Referring now to Fig. 10, the handle 12 is shown in its fully actuated

position with the pawl member 13 retracted. The handle 12 preferably is

provided with a pair of pintles 61 at opposite sides thereof (see Fig. 3) for pivotally connecting the handle 12 to the housing 11. The housing 11 can

be provided with apertures or grooves (not shown) in which the handle pintles 61 can be seated for pivotal movement. It will be further understood that other suitable connecting means for pivotally attaching the handle 12 to the housing 11 can be utilized consistent with the scope of the invention described herein. For example, the housing can be provided with the pintles and the handle 12 can have apertures for receiving the pintles. Other alternate connecting arrangements are possible including the utilization of

pins, bolts, and the like. As shown best in Figs. 3, 4 and 10, the handle 12 has side flanges

62, 63, which facilitate alignment of the handle 12 relative to the housing 1 1. The housing 11 is provided with a ledge 64, as shown in Fig. 7, there

being a ledge on the opposite side of the housing 11 (not shown). The ledge 64 provides a seat for the handle side flange 63 when the handle 12 is in its closed (Fig. 1) position. The handle 12 preferably has a second flange 62 on

the opposite handle side, which can rest on a housing ledge on that side (not shown). Referring now to Fig. 11, an alternate embodiment of a handle 112 according to the present invention is shown. The handle 112 is similar to the handle 12 shown and described above in relation to that of the latch embodiment of Figs. 1-10, but does not include a lockplug. The handle 112 has a lifting portion 150 and a pair of pintles 161 disposed on each side

thereof for mounting the handle 112 to the housing 11. The handle 112 further has actuating fingers 147, 148, positioning tabs 152, 153, and flanges

162, 163 disposed at each side thereof. The handle 112 is provided to function similar to the handle 12, but without the locking means. Other modifications to the above description can be made consistent with the spirit and scope of the invention disclosed herein. For example, while the keeper is referred to as a separate member, it will be understood that the keeper can comprise a panel, enclosure frame or other surface

which the pawl can engage, consistent with the disclosure provided herein. Also, while the present invention is described in connection with a lockplug 15, it is also understood that a knob, handle or other member can be used to

rotate a member into and out of the way of the handle locking legs 71, 72 to regulate the opening and closing.

These and other advantages of the present invention can be made

consistent with the spirit and scope of the invention as disclosed in the

Summary of the Invention, the Brief Description of the Drawing Figures, the

Detailed Description of the Preferred Embodiments and the appended

claims. While the above description constitutes the preferred embodiment of the present invention, it will be appreciated that the invention is subject to

modification, variation and change, without departing from the proper scope or fair meaning of the present invention. In this regard, while the various features of the present invention have been shown and described in relation to a vehicle floor panel, it will be understood that many of these features are suitable in connection with latching of other members.

Claims

What is claimed is:

1. A pawl latch for securing a first member to a second member wherein a pawl of the latch is provided to engage a keeper, said latch comprising:

a) a housing which is adapted for mounting to one of said first

member and said second member; b) a pawl member connected to said housing and adapted to engage a keeper to secure the latch in a closed position, wherein said pawl member comprises a living spring member; c) a handle pivotally connected to said housing and being

movable over a pivot range, said handle including actuating means for selectively engaging the pawl member when the handle is pivoted.

2. The latch of claim 1, wherein said pawl member has a foot which is disposed for engagement with said handle actuating means when said handle

is pivoted.

3. The latch of claim 2, wherein said pawl member foot is provided

with at least one slot therein, and wherein said actuation means comprises at least one finger, wherein said finger is moved into said slot upon pivotally moving the handle to retract said pawl by moving said pawl with said handle.

4. The latch of claim 2, further comprising locking means for locking

said latch handle against movement relative to said housing.

5. The latch of claim 4, wherein said locking means comprises locking legs disposed on said handle and a locking member which has notches therein which correspond to said locking legs, said locking member being

selectively rotatable between a first position wherein said notches are aligned with said locking legs to permit the handle to be movable relative to

said housing and a second position, wherein said notches are not aligned with said locking legs to prevent movement of said handle relative to said housing.

6. The latch of claim 5, wherein said handle has a top surface with an aperture and wherein said locking legs comprise generally L-shaped

members disposed on opposite sides of said handle aperture.

7. The latch of claim 1, wherein said housing comprises a seat on each side thereof for supporting said handle.

8. The latch of claim 7, wherein said handle has a top surface and a

flange disposed on each side of said top surface extending downwardly therefrom, wherein each said flange engages said housing seat to position said handle relative to said housing.

9. The latch of claim 1, wherein said housing has stop means for holding the handle in a partially raised position.

10. The latch of claim 1, wherein said housing has stop means for

securing the handle in a position relative to said housing.

11. The latch of claim 10, wherein said stop means comprises at least

one leg member connected to the housing at one end thereof and having a free end with an engaging element thereon, and wherein said handle has at least one limiting element which is disposed on said handle to engage said engaging element of said at least one leg member when said handle is moved to its closed position.

12. The latch of claim 9, wherein said stop means comprises at least one

leg member connected to the housing at one end thereof and having a free end with an engaging element thereon, and wherein said handle has at least one limiting element which is disposed on said handle to engage said engaging element of said at least one leg member when said handle is pivoted.

13.. The latch of claim 12, wherein said at least one limiting element comprises a tab portion extending downwardly from said handle surface.

14. The latch of claim 12, wherein said at least one leg member is a flexible member.

15. The latch of claim 12, wherein said at least one leg member comprises a spring member.

16. The latch of claim 4 wherein said locking means comprises a lockplug and a retaining member which connects said lockplug to said housing.

17. The latch of claim 1, wherein said housing has protruding flanges

disposed vertically on each side of said pawl.

18. A pawl latch for securing a first member to a second member,

wherein the latch engages with a keeper, said latch comprising: a) a housing, including a pawl member connected thereto and

being movable in relation to said housing; b) a handle pivotally connected to said housing and being pivotally movable over a pivot range, said handle including actuating means for engaging the pawl member; c) wherein said pawl member comprises a living spring member and includes a leg portion which is disposed for engagement with said

handle actuating means upon rotation of said handle; d) wherein said pawl member is joined with said housing along

an edge of the pawl member.

19. The latch of claim 18, wherein said pawl member leg portion is provided with at least one slot, and wherein said actuation means comprises at least one finger, wherein said finger is moved into said slot upon pivotally moving the handle to retract said pawl.

20. The latch of claim 18, further comprising locking means; wherein

said handle has a top surface with an aperture therein; wherein said locking

means includes locking legs disposed on said handle on opposite sides of

said aperture, and a locking member which has notches therein which correspond to said locking legs, said locking member being selectively

rotatable between a first position wherein said notches are aligned with said

locking legs to permit the handle to be movable relative to said housing and a second position, wherein said notches are not aligned with said locking

legs to prevent movement of said handle relative to said housing.