US3562699A - Electric contact and base plate assembly - Google Patents

Electric contact and base plate assembly Download PDF

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Publication number
US3562699A
US3562699A US722115A US3562699DA US3562699A US 3562699 A US3562699 A US 3562699A US 722115 A US722115 A US 722115A US 3562699D A US3562699D A US 3562699DA US 3562699 A US3562699 A US 3562699A
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US
United States
Prior art keywords
base plate
contact piece
rivet
electric contact
plate assembly
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.)
Expired - Lifetime
Application number
US722115A
Inventor
Leif Branden
Arne Karl Ryr
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Telefonaktiebolaget LM Ericsson AB
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Telefonaktiebolaget LM Ericsson AB
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/561—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using screw-threads being integral at least to one of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/60—Riveting or staking
    • B29C65/606—Riveting or staking the rivets being integral with one of the parts to be joined, i.e. staking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/21—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/303—Particular design of joint configurations the joint involving an anchoring effect
    • B29C66/3032—Particular design of joint configurations the joint involving an anchoring effect making use of protusions or cavities belonging to at least one of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/61—Joining from or joining on the inside
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/502—Bases; Cases composed of different pieces
    • H01R13/504—Bases; Cases composed of different pieces different pieces being moulded, cemented, welded, e.g. ultrasonic, or swaged together
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/16—Fastening of connecting parts to base or case; Insulating connecting parts from base or case
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations

Definitions

  • the invention refers to a method of fastening contact pieces on a base plate of thermoplastic material, especially for the manufacturing of connection boxes for telephone instruments.
  • An object of the invention is to avoid this disadvantage and to provide a simple and economic way of fastening the contact pieces on a plate of thermoplastic material without the use of apertures in the base.
  • the invention is characterized by the fact that the plate is provided with projections suitable to be used as rivets, that rivet-holes are taken up in the contact pieces, the inside of the holes being provided with grooves such as screw-threads, and that the driving of a rivet after having slipped a contact piece thereon is effected by means of a mandrel arranged to ultrasonically vibrate.
  • FIGS. 1 and 2 show a contact piece
  • FIGS. 3 and 4 show a base plate for carrying a contact piece
  • FIG. 5 shows the contact piece located on the base plate
  • FIG. 6 shows the rivet at the driving instant and FIG. 7 shows the final form of the rivet.
  • FIGS. 1 and 2 show a contact piece 1 with three holes, the two end holes of which are destined to receive screws and the center hole for riveting of the contact piece.
  • the holes which are all equal, are obtained by flanging and are thereafter screw-threaded.
  • a base plate 3 On a plate 2 which base is provided with recesses to give room for the hole flanges 9 of the contact piece.
  • the intermediate recess 4 that is of a circular form, has in its center a projection 5 suitable to be used as a rivet.
  • the contact piece is placed in position, see FIG. 5, and then by means of a mandrel 6, vibrating at an ultrasonic frequency,
  • the rivet is driven (FIG. 6).
  • the same When driving the rivet under vibration the same is heated up, so that the surface layers of the rivet are softened.
  • the temperature In a conical portion 7 near to the mandrel as well as in another conical portion 8 at the base of the rivet, the temperature, however, remains relatively low because of the contact with the mandrel and the connection to the base plate, respectively, so that these portions do not soften.
  • the conical portions are forced towards each other, whereby the soft portions of the rivet are forced radially outwards to fill the screw-threads of the hole.
  • the final form of the rivet is shown in FIG. 7. Because the flanges 9 of the screw holes engage the square recesses 10 a rotational movement of the contact piece when tightening the screw is avoided and the rivet is not exposed to a too big torsional stress.
  • the method is especially suitable for automatic production processes. If a number of contact pieces are to be fastened simultaneously on each base plate a mandrel is arranged for each contact piece, so that all the rivets may be driven in one working operation.
  • An electric contact assembly comprising: a base plate of thermoplastic material, said base being provided with at least two recesses, one of said recesses having a rectangular cross-section, the other of said receses having a circular cross-section, a projection extending upward and outward from said other recess; and a contact piece of metal, said contact piece being provided with two circular openings, outwardly extending circular flanges disposed around the peripheries of said circular openings, the inner surfaces of each of said flanges being provided with screw threads, one of said flanges extending into said one recess, the other of said flanges extending into said other recess and encircling said projection with the end of said projection overlying the region of said contact piece adjacent the periphery of the associated circular opening and the shaft of said projection being enmeshed with the screw threads of the flange associated with said second opening.

Abstract

A THERMOPLASTIC BASE PLATE WITH AT LEAST TWO RECESSES, ONE OF WHICH HAS A PROJECTION EXTENDING THEREFROM, HAS A CONTACT PIECE OF METAL CONNECTED THERETO. THE CONTACT PIECE HAS AT LEAST TWO APERTURES, ONE OF WHICH ENCIRCLES THE PROJECTION OF THE BASE PLATE, AND IS FASTENED TO THE BASE PLATE BY MEANS OF RIVETING THE PROJECTION TO THE CONTACT PIECE.

Description

Feb. 9, R D N ETAL ELECTRIC CONTACT AND BASE PLATE ASSEMBLY Filed April 17, 1968 INVeNTozs -Li\l' Emulator Mme knm. RYE.
HTTONEY 6 United States Patent 3,562,699 ELECTRIC CONTACT AND BASE PLATE ASSEMBLY Leif Branden and Arne Karl Ryr, Tyreso, Sweden, as-
signors to Telefonaktiebolaget L M Ericsson, Stockholm, Sweden, a corporation of Sweden Filed Apr. 17, 1968, Ser. No. 722,115 Claims priority, application Sweden, June 2, 1967, 7,730/ 67 Int. Cl. H01r 9/14, /06; Fllb 19/04 US. Cl. 3319-220 Claim ABSTRACT OF THE DISCLOSURE The invention refers to a method of fastening contact pieces on a base plate of thermoplastic material, especially for the manufacturing of connection boxes for telephone instruments.
In the known devices of this kind the contact pieces are generally fixed to the base plate by means of screws, rivets or eyelets or by bent lugs with the use of apertures in the base plate. This presents a disadvantage, especially for boxes for wall mounting, because in case of humidity in the wall where a box is mounted, the connections are not protected against this humidity.
An object of the invention is to avoid this disadvantage and to provide a simple and economic way of fastening the contact pieces on a plate of thermoplastic material without the use of apertures in the base.
The invention is characterized by the fact that the plate is provided with projections suitable to be used as rivets, that rivet-holes are taken up in the contact pieces, the inside of the holes being provided with grooves such as screw-threads, and that the driving of a rivet after having slipped a contact piece thereon is effected by means of a mandrel arranged to ultrasonically vibrate.
The invention will be further described by means of an embodiment with reference to the acompanying drawing in which:
FIGS. 1 and 2 show a contact piece,
FIGS. 3 and 4 show a base plate for carrying a contact piece,
FIG. 5 shows the contact piece located on the base plate,
FIG. 6 shows the rivet at the driving instant and FIG. 7 shows the final form of the rivet.
FIGS. 1 and 2 show a contact piece 1 with three holes, the two end holes of which are destined to receive screws and the center hole for riveting of the contact piece.
The holes, which are all equal, are obtained by flanging and are thereafter screw-threaded. For supporting the contact piece there is arranged a base plate 3 on a plate 2 which base is provided with recesses to give room for the hole flanges 9 of the contact piece. The intermediate recess 4 that is of a circular form, has in its center a projection 5 suitable to be used as a rivet. The contact piece is placed in position, see FIG. 5, and then by means of a mandrel 6, vibrating at an ultrasonic frequency,
the rivet is driven (FIG. 6). When driving the rivet under vibration the same is heated up, so that the surface layers of the rivet are softened. In a conical portion 7 near to the mandrel as well as in another conical portion 8 at the base of the rivet, the temperature, however, remains relatively low because of the contact with the mandrel and the connection to the base plate, respectively, so that these portions do not soften. When pressing down the mandrel the conical portions are forced towards each other, whereby the soft portions of the rivet are forced radially outwards to fill the screw-threads of the hole. The final form of the rivet is shown in FIG. 7. Because the flanges 9 of the screw holes engage the square recesses 10 a rotational movement of the contact piece when tightening the screw is avoided and the rivet is not exposed to a too big torsional stress.
By fastening the contact piece in this way the necessity of having apertures in the base plate is eliminated, so that the contacts are protected against humidity from the supporting surface.
The method is especially suitable for automatic production processes. If a number of contact pieces are to be fastened simultaneously on each base plate a mandrel is arranged for each contact piece, so that all the rivets may be driven in one working operation.
We claim:
1. An electric contact assembly comprising: a base plate of thermoplastic material, said base being provided with at least two recesses, one of said recesses having a rectangular cross-section, the other of said receses having a circular cross-section, a projection extending upward and outward from said other recess; and a contact piece of metal, said contact piece being provided with two circular openings, outwardly extending circular flanges disposed around the peripheries of said circular openings, the inner surfaces of each of said flanges being provided with screw threads, one of said flanges extending into said one recess, the other of said flanges extending into said other recess and encircling said projection with the end of said projection overlying the region of said contact piece adjacent the periphery of the associated circular opening and the shaft of said projection being enmeshed with the screw threads of the flange associated with said second opening.
References Cited UNITED STATES PATENTS 2,252,896 8/1941 Mounts 264-248 2,269,136 1/ 1942 Tellkamp 264-249 2,705,346 4/ 1955 Schlacback et a1 264-249 2,425,104 8/ 1947 Luce 264-249 3,248,488 4/1966 Stephen 264-249 3,440,118 4/ 1969 Obeda 264-248 3,431,593 3/1969 Miller 264-23X FOREIGN PATENTS 988,268 6/1951 France 264-248 1,036,975 8/1958 Germany 339-218 B28,497 4/1956 Germany -37 MARVIN A. CHAMPION, Primary Examiner R. A. HAFER, Assistant Examiner US. Cl. X.R. 85-37; 339-276
US722115A 1967-06-02 1968-04-17 Electric contact and base plate assembly Expired - Lifetime US3562699A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE773067 1967-06-02

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2084395A5 (en) * 1970-03-05 1971-12-17 Lucas Industries Ltd
US4444452A (en) * 1980-12-02 1984-04-24 Leopold Kostal Gmbh & Co. Kg Apparatus for central arrangement of electrical connector elements in motor vehicles
US4731034A (en) * 1987-03-16 1988-03-15 Elco Industries, Inc. Electrical terminal assembly and method of making the same
WO2007085560A3 (en) * 2006-01-26 2007-11-15 Faurecia Innenraum Sys Gmbh Method for ultrasound welding and construction module, particularly door module of a motor vehicle
WO2012031982A1 (en) * 2010-09-09 2012-03-15 Basf Se Method for connecting at least two components
CN107708974A (en) * 2015-06-11 2018-02-16 伍德韦尔丁公司 Second object is fixed to the first object

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3141087A1 (en) * 1981-10-16 1983-04-28 Robert Bosch Gmbh, 7000 Stuttgart Voltage regulator/brush holder combination, and method for its manufacture
FR2563948B1 (en) * 1984-05-07 1987-07-17 Bonhomme F R IMPROVEMENTS ON ELECTRICAL CONNECTORS AND MANUFACTURING METHODS THEREOF
MX2017015271A (en) * 2015-06-11 2018-02-19 Woodwelding Ag Anchoring in a lightweight building element.
DE102020109908A1 (en) 2020-04-08 2021-10-14 Preh Gmbh Joining process with the production of an improved hot-staked rivet connection

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2084395A5 (en) * 1970-03-05 1971-12-17 Lucas Industries Ltd
US4444452A (en) * 1980-12-02 1984-04-24 Leopold Kostal Gmbh & Co. Kg Apparatus for central arrangement of electrical connector elements in motor vehicles
US4731034A (en) * 1987-03-16 1988-03-15 Elco Industries, Inc. Electrical terminal assembly and method of making the same
WO2007085560A3 (en) * 2006-01-26 2007-11-15 Faurecia Innenraum Sys Gmbh Method for ultrasound welding and construction module, particularly door module of a motor vehicle
US20100175329A1 (en) * 2006-01-26 2010-07-15 Faurecia Innenraum Systeme Gmbh Method for ultrasound welding and construction module, particularly motorvehicle door module
US8048246B2 (en) 2006-01-26 2011-11-01 Faurecia Innenraum Systeme Gmbh Method for ultrasound welding and construction module, particularly motor vehicle door module
CN101370641B (en) * 2006-01-26 2012-04-04 福罗西内空间体系有限公司 Method for ultrasound welding and construction module, particularly door module of a motor vehicle
WO2012031982A1 (en) * 2010-09-09 2012-03-15 Basf Se Method for connecting at least two components
JP2013537119A (en) * 2010-09-09 2013-09-30 ビーエーエスエフ ソシエタス・ヨーロピア Method for joining at least two members
CN107708974A (en) * 2015-06-11 2018-02-16 伍德韦尔丁公司 Second object is fixed to the first object
US11203166B2 (en) 2015-06-11 2021-12-21 Woodwelding Ag Securing a second object to a first object

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Publication number Publication date
GB1163680A (en) 1969-09-10
DE1778433A1 (en) 1971-10-28

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