US3533048A - Electrical connector tab receptacles - Google Patents

Electrical connector tab receptacles Download PDF

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Publication number
US3533048A
US3533048A US749892*A US3533048DA US3533048A US 3533048 A US3533048 A US 3533048A US 3533048D A US3533048D A US 3533048DA US 3533048 A US3533048 A US 3533048A
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US
United States
Prior art keywords
receptacle
base
tab
turned
parts
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
US749892*A
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English (en)
Inventor
Wladimiro Teagno
Luciano Obert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TE Connectivity Corp
Original Assignee
AMP Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by AMP Inc filed Critical AMP Inc
Application granted granted Critical
Publication of US3533048A publication Critical patent/US3533048A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H01R13/02—Contact members
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets
    • H01R13/115—U-shaped sockets having inwardly bent legs, e.g. spade type

Definitions

  • a tab receptacle comprises short turned in sides and a base provided with a central spring area having lateral outwardly-directed spring arms.
  • This invention relates to electrical connector tab receptacles.
  • Terminal tabs are well-known devices for making releasable connection to terminal tabs which are customarily provided on electrical components to facilitate electrical connection to the components.
  • Terminal tabs generally comprise flat strips of metal of rectangular crosssection and with straight sides, the section having a major width substantially greater than a minor width to present opposite sides to the post of substantially greater width than the post thickness.
  • a successful form of tab receptacle based upon the disclosure of US. Pat. No. 2,774,951 comprises a receptacle portion of channel-shaped clip form, sides of the channel being rolled inwardly to present edges opposed to the channel base.
  • the base has a central portion elevated to present a platform opposed to the edges and the platform is arcuately bowed transversely of the channel and towards the edges.
  • the platform is laterally slotted.
  • a tab is resiliently clamped between the edges of the platform, the platform being flattened to effect area contact with one side of the post.
  • the elevation of the platform serves to avoid interference between edges of the post and the rolled sides of the clip at their junction with the base, and the arcuate form of the platform serves to extend the effective lengths of the springs defined by the side arms and also to provide for improved area con tact between the platform and the tab side.
  • US. Pat. No. 2,996,026 discloses a receptacle having a channel-shaped clip form of which the sides are merely folded over to clamp the tab between the folded over portions and the base of the channel.
  • the base is provided with a pair of parallel, longitudinal slots with the metal between the slots curved longitudinally of the receptacle in convex manner towards the folded over portions.
  • the curved portion is flattened against one side of the tab to exert a spring action clamping the other side of the tab against the folded over portions.
  • the spring extends substantially throughout the length of the receptacle.
  • the receptacle portion is of generally channel form having sides turned in to present side parts ice opposed to the base of the channel for slidably receiving a tab between the channel base and the turned-in side parts
  • the base is slotted longitudinally beneath each of the turned-in parts to define a pair of generally parallel slots
  • lateral slots extend from each end of each of the longitudinal slots towards the middle part of the base to define base portions extending laterally outwards from the middle portion of the base, free ends of the base portions remote from the middle portion being turned up towards respective turned-in side portions.
  • the base portions serve as cantilever spring extending laterally of the receptacle from the middle portion of the base, the springs being relatively short in effective length compared with the length of the receptacle portion and for a given deflection of the free ends are capable of exerting a higher spring force than a similar spring of a longer effective length.
  • An object of the invention is to provide a tab receptacle having springs in the base of short length relative to the length of the receptacle section.
  • Another object of the invention is the provision of a tab receptacle provided with L-shaped cantilevered springs in a base thereof.
  • a further object of the invention is to provide a tab receptacle wherein axially-extending slots are formed in the sides of the receptacle section and inwardly-directed slots normal to the axially-extending slots are formed in a base of the receptacle section to provide L-shaped cantilevered springs thereby providing springs of increased effective length.
  • An additional object of the invention is the provision of a tab receptacle provided with laterally extending spring arms struck out from a base of a receptacle portion and a central embossment along the base to increase withdrawal forces and to augment the spring action of the lateral spring arms.
  • a still further object of the invention is to provide corrugations along lateral spring arms in the base of a tab receptacle thereby stiffening the spring arms.
  • Still a further object of the invention is the provision of corrugations along edges of L-shaped lateral spring arms in the base of a tab receptacle to improve contact cleaning action between the serrated edges and a tab mateable with the tab receptacle as well as to increase withdrawal forces therebetween.
  • Still an additional object of the invention is to provide a tab receptacle that requires less metal to make since the spring arms are shorter than normal, the metal can be cheaper due to shorter spring arms thereby allowing the use of a metal having a lower coemcient of elasticity and close tolerances are unnecessary as a result of the width of the blank is not critical to the function of the receptacle.
  • FIG. 1 is a perspective view of a first embodiment to an enlarged scale
  • FIG. 2 is a transverse cross section of the receptacle portion of the connector of FIG. 1 taken on the line 2-2 viewed in the direction of the arrows;
  • FIG. 3 is a longitudinal section of the connector of FIG. 1 taken on the line 33 viewed in the direction of the arrows;
  • FIG. 4 is a plan View of a partly formed metal blank for forming a strip of terminals according to the FIG. 1 embodiment with the relative size of a blank for terminals having rolled-in side portions shown in chain-dotted lines;
  • FIG. 5 is a perspective view of the second embodiment
  • FIG. 6 is a plan view of the receptacle of FIG. 5;
  • FIG. 7 is a transverse section taken on the line 7-7 of FIG. 6;
  • FIG. 8 is a view similar to that of FIG. 7 but with a tab in position
  • FIG. 9 is a fragmentary perspective view of a modification of the embodiment of FIG. 5
  • the electrical connector tab receptacle of FIGS. 1 to 3 comprises a receptacle portion 1 integral at one end with a conductor crimping portion 2, the connector being formed by folding a flat blank of the form shown in FIG. 4 in a press die.
  • the crimping portion 2 comprises an insulation support ferrule 3 and a wire crimp ferrule 4 of U-form for securing to the insulation and core of an insulated conductor in known manner.
  • the receptacle portion 1 is adapted releasably to receive a tab 5, as shown in FIG. 3, and comprises a generally channelshaped section having a flat base 6 formed with turned-up sides 7.
  • Upper edge parts 8 of the sides 7 are turned in to extend parallel to the base, as shown, or at a slight inclination towards the base 6.
  • the turned-in parts 8, as seen in FIG. 2 are short relative to the width of the channel section and each extends through less than onethird of the width of the receptacle.
  • the sides 7 of the channel extend in convergent manner through a transition section 9 between the receptacle portion 1 and the crimping section 2, and merge with side arms of the wire crimp ferrule 4.
  • the base 6, adjacent the turned-in parts 8 and next to the sides 7, is slotted longitudinally through a major length of the base to provide a pair of parallel slots 10.
  • the slots 10 terminate short of the forward end of the receptacle and short lateral slots 11 extend inwards, at the forward and rear ends of slots 10, to define rectangular tongues 12 extending outwardly from a middle portion of the base 6.
  • lateral slots 11 can be angled toward each other toward the center of the base, angled away from each other toward the center of the base or one lateral slot is angled toward the other slot which is normal to the respective slot 10.
  • Outer free ends of the tongues 12 are turned up to present edges 13 opposed to respective turned-in parts 8 and thereby form L-shaped springs.
  • the edges 13 form the free ends of the L-shaped springs cantilevered from the middle portion of the base 6 and having relatively short spring arms 14, as 4 seen in FIG. 2.
  • the base 6 Rearwardly of the L-shaped springs the base 6 is formed centrally with a latching detent 15 for releasably securing the receptacle in a housing in known manner.
  • the lead ing end or mouth of the receptacle is suitably flared, as seen at 16 in FIG. 3, to facilitate insertion of the tab 5, and to this end the leading corner portions 17 of the parts 8 are turned up at an inclination, and the leading edge 18 of the base is bent down.
  • the leading corners of the turned-up parts 13 of the L-shaped springs are suitably chamfered at 19.
  • the tab 5 is pushed into the mouth of the receptacle 1 to engage the leading end of the tab with the leading ends of the Lshaped springs, further insertion causing the L-shaped springs to be deflected downwards to admit the tab between the edges 13 and the turned-in parts 8, as shown in FIG. 3.
  • the edges 13 engage the underside of the tab and urge the tab 5 upwards against the underside of the turned-in parts 8.
  • the short arms 14 of the springs are bowed downwards as seen in FIG. 2,
  • the tab extends through substantially the entire width of the receptacle between the sides 7, bending moments tending to cause such deflection of the parts 8 tend to be small.
  • the tendency may be guarded against by forming the turned-in parts 8 with an initial slight inclination downwards toward the base 6 so that, on insertion of the tab, the turned-in parts 8 are deflected to extend substantially parallel to the base 6.
  • the receptacle of FIG. 1 is formed from a flat metal blank having a portion B of generally rectangular profile corresponding to a development of the receptacle portion 1.
  • the corresponding blank form for an equivalent receptacle portion having rolled side springs is as shown in chain-dotted lines at A, and it is evident that the blank of the present invention involves substantial saving in metal.
  • the precise width of the blank portion B is not critical to the function of the receptacle according to the present invention, whereas in the rolled spring form of receptacle the width of the blank portion may be critical, the present invention requires less careful control of the width of the strip from which the blank is formed than is the case with the rolled spring type of receptacle.
  • short spring arms 14 allows the use of metal having a lower coefficient of elasticity to obtain equivalent spring forces to those of longer springs, and it is thus possible to con struct a tab receptacle not only using less material but also using cheaper material, and a substantial economy of manufacture may be obtained.
  • a middle portion of the receptacle base is formed with a longitudinal embossment 20 projecting convexly above the base 6.
  • the slots 10 from which the springs are formed extend into the sides 7 of the channel section adjacent turned-in parts 8, to increase the effective length of the spring arms, and the springs are curved arcuately away from the central embossment 20, initially downwardly and outwardly below the general level of the base 6 to present an upper convex surface, and at their outer ends upwardly in reverse curvature to present upper concavities.
  • the free edges 13 of the springs terminate at the level of the embossment 20 and are opposed to the turned-in parts 8.
  • the springs are stiffened by corrugations 21 extending laterally of the receptacle from the central embossment 20. Such corrugations can be provided in the long legs of spring arms 12 of the embodiment of FIGS. l-3 to stiffen same.
  • the curvature of the arcuate portions is reduced and the free edges 13 and the central embossment 20 are resiliently depressed.
  • the central embossment 20 serves tto increase withdrawal forces and to augment the spring action of the lateral spring arms 14.
  • edges 13 of the spring arms are serrated in saw-tooth fashion with leading edges of the serrations being inclined rearwardly and up wardly to facilitate insertion of a tab into the receptacle and to resist withdrawal of the tab.
  • the serrations serve to improve contact cleaning action of the edges 13 as well as to increase withdrawal forces.
  • Serrations may also be provided along edges 13 of the spring arms 12 of the embodiment of FIGS. 1-3 in order to improve contact cleaning action between the serrated edges and the tab and to increase withdrawal forces therebetween.
  • An electrical connector tab receptacle comprising a tab receptacle portion having a base and sides defining a generally channel form, said sides having turned-in parts to present side parts opposed to and substantially parallel with the base of the channel for slidably receiving a tab between the channel base and the turned-in side parts, the base having longitudinal slots to define a pair of generally parallel slots and lateral slots extending laterally from each end of the longitudinal slots towards a middle part of the base to define laterally-directed spring base portions, and free ends of the base portions underlying the turned-in side parts being turned up towards respective turned-in side parts to present free edges of said base portions at respective locations intermediate free edges portion of the base are curved laterally of the receptacle, initially downwardly and outwardly and then upwardly.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
US749892*A 1967-05-02 1968-05-02 Electrical connector tab receptacles Expired - Lifetime US3533048A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB20158/67A GB1179882A (en) 1967-05-02 1967-05-02 Electrical Connector Tab Receptacle

Publications (1)

Publication Number Publication Date
US3533048A true US3533048A (en) 1970-10-06

Family

ID=10141348

Family Applications (1)

Application Number Title Priority Date Filing Date
US749892*A Expired - Lifetime US3533048A (en) 1967-05-02 1968-05-02 Electrical connector tab receptacles

Country Status (9)

Country Link
US (1) US3533048A (xx)
JP (1) JPS507276B1 (xx)
BE (1) BE714149A (xx)
DE (1) DE1765338A1 (xx)
ES (1) ES149420Y (xx)
FR (1) FR1560917A (xx)
GB (1) GB1179882A (xx)
NL (1) NL6805713A (xx)
SE (1) SE349701B (xx)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49149290U (xx) * 1973-04-24 1974-12-24
US3960430A (en) * 1974-10-29 1976-06-01 Amp Incorporated Flat wiring system and crimped connection
US4395081A (en) * 1981-04-06 1983-07-26 Sweda International, Inc. Electrical connector

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1416813A (en) * 1973-01-11 1975-12-10 Cannon Electric Great Britain Electrical terminations
GB1579781A (en) * 1977-06-04 1980-11-26 Amp Inc Electrical terminal

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2770792A (en) * 1954-09-03 1956-11-13 Kent Mfg Corp Electric connector member and method of making the same
US2980878A (en) * 1957-02-11 1961-04-18 Amp Inc Clip connector for printed circuit board
FR1353853A (fr) * 1962-06-29 1964-02-28 Stocko Metallwarenfab Henkels Pince à ressort pour connexions électriques à fiches plates
US3152856A (en) * 1962-11-13 1964-10-13 Kent J Batcheller Female electric connector member

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2770792A (en) * 1954-09-03 1956-11-13 Kent Mfg Corp Electric connector member and method of making the same
US2980878A (en) * 1957-02-11 1961-04-18 Amp Inc Clip connector for printed circuit board
FR1353853A (fr) * 1962-06-29 1964-02-28 Stocko Metallwarenfab Henkels Pince à ressort pour connexions électriques à fiches plates
US3152856A (en) * 1962-11-13 1964-10-13 Kent J Batcheller Female electric connector member

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49149290U (xx) * 1973-04-24 1974-12-24
JPS5229269Y2 (xx) * 1973-04-24 1977-07-04
US3960430A (en) * 1974-10-29 1976-06-01 Amp Incorporated Flat wiring system and crimped connection
US4395081A (en) * 1981-04-06 1983-07-26 Sweda International, Inc. Electrical connector

Also Published As

Publication number Publication date
GB1179882A (en) 1970-02-04
DE1765338A1 (de) 1971-07-15
FR1560917A (xx) 1969-03-21
JPS507276B1 (xx) 1975-03-24
SE349701B (xx) 1972-10-02
ES149420U (es) 1969-11-01
NL6805713A (xx) 1968-11-04
BE714149A (xx) 1968-09-16
ES149420Y (es) 1970-06-01

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