CA1209662A - Two-piece electrical socket contact assembly - Google Patents
Two-piece electrical socket contact assemblyInfo
- Publication number
- CA1209662A CA1209662A CA000449390A CA449390A CA1209662A CA 1209662 A CA1209662 A CA 1209662A CA 000449390 A CA000449390 A CA 000449390A CA 449390 A CA449390 A CA 449390A CA 1209662 A CA1209662 A CA 1209662A
- Authority
- CA
- Canada
- Prior art keywords
- spring fingers
- tubular member
- sleeve
- boss
- opening defined
- 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
Links
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
- H01R13/111—Resilient sockets co-operating with pins having a circular transverse section
Landscapes
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Cable Accessories (AREA)
- Connector Housings Or Holding Contact Members (AREA)
Abstract
Abstract:
A TWO PIECE ELECTRICAL SOCKET CONTACT ASSEMBLY
An annular boss (22) in the forward portion of the outer sleeve (20) of a socket contact assembly prevents the over deflection of a spring finger (11) of the inner tubular member (10) thereby minimizing the damage that may be caused by a pin type contact entering the socket contact at an angle to the central axis of the socket contact.
A TWO PIECE ELECTRICAL SOCKET CONTACT ASSEMBLY
An annular boss (22) in the forward portion of the outer sleeve (20) of a socket contact assembly prevents the over deflection of a spring finger (11) of the inner tubular member (10) thereby minimizing the damage that may be caused by a pin type contact entering the socket contact at an angle to the central axis of the socket contact.
Description
~7~6~2 A TWO PIECE ELECTRICAL SOCKET CONTACT ASSE~B~Y
This invention relates to electrical connectors and more particularly to a two piece stamped and formed electrical socket contact assembly for use within an electrical connector.
5Electrical connectors generally include a plug and receptacle each having an insert of dielectric material provided with multiple openings wi~hin which respective pin and sorket type electrical contacts are retained.
Upon mating of the plug to the receptacle the pin type contacts are inserted into the socket type contacts which have a plurality of radially deflectable spring fingers that engage the pin contact.
All too frequently during the insertion o~ a pin type contact into a socket type contact the contacts are not axially aligned and the pin enters the socket at an angle. In ~his instance the spring fingers are deflected beyond their normal range, decreasing their resiliency and their inward force on the pin contact after mating.
Such an angular entry by a pin type contact may also permanently deflect a spring finger from its original position. To minimize the problem of damage to the spring fingers in a stamped and formed electrical socket contact assembly a sleeve has been placed around the fingers to protect the spring fingers. Such an arrangement is illustrated in U.S. Patent 4,120,556 entitled "Electrical Contact Assembly" issued October 17, 1978. In U.S. Patent 4,168,878 entitled "Pin and ~ocket ~ype Electrical Terminals" issued September 25, 1979 an annular crimp in the outer sleeve engages the spring fingers to control the force of the fingers against a pin contact. However, with this type of arrangement, the annular boss provides a fulcrum for permanently bending the spring fingers of the socket contact.
~Z~96~
Disclosure of the Invention _ This invention is a stamped and formed electrical socke~ type contact assembly that limits or confines the deflection of the spring fingers of the socket contact when ma~ed to a pin ~ype contact. The invention is-characterized by a two piece stamped and formed electrical socket type contact assembly having in the outer sleeve thereof an annular boss tha~ extends inwardly and spaced from the forward half portion of the spring fingersO The boss engages the fingers if they are deflected outwardly beyond a predetermined distance.
Accordingly, it is an advantage of this invention to provide a two piece stamped and formed electrical ~ocke~
contact assembly that prevents the over deflection of a spring finger of the socket contact.
It is another advantage of this invention to reduce th~ number of pieces necessary to make a stamped and formed socket contact assembly.
This invention relates to electrical connectors and more particularly to a two piece stamped and formed electrical socket contact assembly for use within an electrical connector.
5Electrical connectors generally include a plug and receptacle each having an insert of dielectric material provided with multiple openings wi~hin which respective pin and sorket type electrical contacts are retained.
Upon mating of the plug to the receptacle the pin type contacts are inserted into the socket type contacts which have a plurality of radially deflectable spring fingers that engage the pin contact.
All too frequently during the insertion o~ a pin type contact into a socket type contact the contacts are not axially aligned and the pin enters the socket at an angle. In ~his instance the spring fingers are deflected beyond their normal range, decreasing their resiliency and their inward force on the pin contact after mating.
Such an angular entry by a pin type contact may also permanently deflect a spring finger from its original position. To minimize the problem of damage to the spring fingers in a stamped and formed electrical socket contact assembly a sleeve has been placed around the fingers to protect the spring fingers. Such an arrangement is illustrated in U.S. Patent 4,120,556 entitled "Electrical Contact Assembly" issued October 17, 1978. In U.S. Patent 4,168,878 entitled "Pin and ~ocket ~ype Electrical Terminals" issued September 25, 1979 an annular crimp in the outer sleeve engages the spring fingers to control the force of the fingers against a pin contact. However, with this type of arrangement, the annular boss provides a fulcrum for permanently bending the spring fingers of the socket contact.
~Z~96~
Disclosure of the Invention _ This invention is a stamped and formed electrical socke~ type contact assembly that limits or confines the deflection of the spring fingers of the socket contact when ma~ed to a pin ~ype contact. The invention is-characterized by a two piece stamped and formed electrical socket type contact assembly having in the outer sleeve thereof an annular boss tha~ extends inwardly and spaced from the forward half portion of the spring fingersO The boss engages the fingers if they are deflected outwardly beyond a predetermined distance.
Accordingly, it is an advantage of this invention to provide a two piece stamped and formed electrical ~ocke~
contact assembly that prevents the over deflection of a spring finger of the socket contact.
It is another advantage of this invention to reduce th~ number of pieces necessary to make a stamped and formed socket contact assembly.
2~
Detailed Description of th~ Invention FIGURE 1 illustrates a diagramatic view of a two piece socket contact assembly incorporating the principles of this invention.
FIGURE 2 illustrates a pin type contact entering the socket contact shown in FIGURE 1.
FIG~RE 3 illustrateæ a three piece contact assembly incorporating the principles of this invention mated with a pin type contact.
Referring now to the drawings, FIGURE 1 illustrates a socket contact assembly comprised of a ~tamped and formed tubular member 10 and a sleeve 20 coaxially mounted on the tubular member 10. The ~ubular member 10 9 16~2 includes a rear wire receiving portion and a forward mating portion comprised of a plurality of resiliently deflectable spring fingers 11 adapted to mate with a pin type contact 30. The outside portion of the rear end of the tubular member 10 includes a forwardly facing shoulder 12. The outer sleeve 20, generally comprised of a corrosion resistant material such as stainless steel, includes: a rear portion; an enlarged middle portion 25 having a forwardly facing shoulder 26 and a rearwardly facing shoulder 27; and a forward portion that extends beyond the forward end of the spring fingers 11 of the tubular member 10. The forward end of the outer sleeve 20 terminates in an inwardly extending annular surface 21 that forms an openi.ng slightly larger ~han the opening defined by the ends of the spring fingers 11 in the ~ubular member 10. I~ i9 tlle fllnction of tlle annul.ar surEace 21 to guide a pin type contact 30 into the opening deined by the ends of the spring fingers 11. To limit the outward deflection of the spring fingers ].1 of the tubular member 10 the forward portion of the outer sleeve 20 includes an inwardly extending annular boss 22. Preferably, the boss 22 is located coaxially with and spaced from the spring fingers 11 somewhere along the forward half of the spring fingers. The boss 22 may be arcuately shaped or have a flat portion adapted to engage a spring finger 11 when it is deflected outwardly to limit the fingers outward movement.
FIGURE 2 illustrates a pin type contact entering the socket type contact at an angle that without the boss 22 would deflect a spring finger 11 beyond its normal deflection. In this illustration the annular boss 22 prevents further outward deflection of each spring finger 11 thereby minimi~ing the effect that over deflection might otherwise have on the resiliency of each finger 11.
~L2~9~6;~
FIGT3RE 3 illustrates a mated pin and socket type contact and the normal position of the annular boss 22 of the outer sleeve 20, which is spaced from the outside surface of fingers 11.
While a preferred embodiment of this invention has been disclose~ it will be apparent to those skilled in the art that changes may be made to the invention as set forth in the appended claims without departing from the invention, and in some instances, certain features of the invention may be used to advantage wi hout corresponding use of other features. For example, the enlarged portion of the contact assembly may be part of the inner tubular member 10 or the outer sleeve 20 or there may be two bosses 22 instead of one~ Accordingly, it is intended that the illustrative and descrlptive materials herein be u~ed to illustrate the principles of ~he inven~ion and not to limit the s~ope thereof.
Detailed Description of th~ Invention FIGURE 1 illustrates a diagramatic view of a two piece socket contact assembly incorporating the principles of this invention.
FIGURE 2 illustrates a pin type contact entering the socket contact shown in FIGURE 1.
FIG~RE 3 illustrateæ a three piece contact assembly incorporating the principles of this invention mated with a pin type contact.
Referring now to the drawings, FIGURE 1 illustrates a socket contact assembly comprised of a ~tamped and formed tubular member 10 and a sleeve 20 coaxially mounted on the tubular member 10. The ~ubular member 10 9 16~2 includes a rear wire receiving portion and a forward mating portion comprised of a plurality of resiliently deflectable spring fingers 11 adapted to mate with a pin type contact 30. The outside portion of the rear end of the tubular member 10 includes a forwardly facing shoulder 12. The outer sleeve 20, generally comprised of a corrosion resistant material such as stainless steel, includes: a rear portion; an enlarged middle portion 25 having a forwardly facing shoulder 26 and a rearwardly facing shoulder 27; and a forward portion that extends beyond the forward end of the spring fingers 11 of the tubular member 10. The forward end of the outer sleeve 20 terminates in an inwardly extending annular surface 21 that forms an openi.ng slightly larger ~han the opening defined by the ends of the spring fingers 11 in the ~ubular member 10. I~ i9 tlle fllnction of tlle annul.ar surEace 21 to guide a pin type contact 30 into the opening deined by the ends of the spring fingers 11. To limit the outward deflection of the spring fingers ].1 of the tubular member 10 the forward portion of the outer sleeve 20 includes an inwardly extending annular boss 22. Preferably, the boss 22 is located coaxially with and spaced from the spring fingers 11 somewhere along the forward half of the spring fingers. The boss 22 may be arcuately shaped or have a flat portion adapted to engage a spring finger 11 when it is deflected outwardly to limit the fingers outward movement.
FIGURE 2 illustrates a pin type contact entering the socket type contact at an angle that without the boss 22 would deflect a spring finger 11 beyond its normal deflection. In this illustration the annular boss 22 prevents further outward deflection of each spring finger 11 thereby minimi~ing the effect that over deflection might otherwise have on the resiliency of each finger 11.
~L2~9~6;~
FIGT3RE 3 illustrates a mated pin and socket type contact and the normal position of the annular boss 22 of the outer sleeve 20, which is spaced from the outside surface of fingers 11.
While a preferred embodiment of this invention has been disclose~ it will be apparent to those skilled in the art that changes may be made to the invention as set forth in the appended claims without departing from the invention, and in some instances, certain features of the invention may be used to advantage wi hout corresponding use of other features. For example, the enlarged portion of the contact assembly may be part of the inner tubular member 10 or the outer sleeve 20 or there may be two bosses 22 instead of one~ Accordingly, it is intended that the illustrative and descrlptive materials herein be u~ed to illustrate the principles of ~he inven~ion and not to limit the s~ope thereof.
Claims (14)
1. An electrical socket contact assembly comprising:
a stamped and formed tubular member having a rear wire receiving portion and a forward mating portion, said forward mating portion of said tubular member including a plurality of resiliently deflectable spring fingers adapted to receive a pin type contact through the opening defined by the ends of said spring fingers; and a sleeve coaxially mounted on said tubular member, said sleeve having a rear portion and a forward portion, and at least one inwardly extending annular boss in the forward portion of the outer sleeve coaxial with and spaced from said spring fingers, said boss adapted to engage each spring finger that is deflected outwardly a predetermined distance by a pin shaped contact inserted into the opening defined by said spring fingers.
a stamped and formed tubular member having a rear wire receiving portion and a forward mating portion, said forward mating portion of said tubular member including a plurality of resiliently deflectable spring fingers adapted to receive a pin type contact through the opening defined by the ends of said spring fingers; and a sleeve coaxially mounted on said tubular member, said sleeve having a rear portion and a forward portion, and at least one inwardly extending annular boss in the forward portion of the outer sleeve coaxial with and spaced from said spring fingers, said boss adapted to engage each spring finger that is deflected outwardly a predetermined distance by a pin shaped contact inserted into the opening defined by said spring fingers.
2. The electrical contact as recited in Claim 1 wherein said tubular member includes a forwardly facing annular shoulder on the outside rear end thereof that engages the rear end of said sleeve.
3. The electrical contact as recited in Claim 1 wherein one of said tubular member and said sleeve includes an enlarged portion having forward and rearward facing shoulders on the outside surface thereof located between the rear and forward mating portions of said tubular member.
4. The electrical contact as recited in Claim 1 wherein the annular boss is located adjacent the forward half portion of said spring fingers.
5. The electrical contact as recited in Claim 1 wherein the forward end of said sleeve extends beyond the ends of the spring fingers of said tubular member and terminates in an annular surface that extends radially inwardly towards said spring fingers to define an opening slightly larger than the opening defined by the ends of said spring fingers, said annular surface adapted to guide a pin type contact into the opening defined by said spring fingers.
6. The electrical contact as recited in Claim 2 wherein the forward end of said sleeve extends beyond the ends of the spring fingers of said tubular member and terminates in an annular surface that extends radially inwardly towards said spring fingers to define an opening slightly larger than the opening defined by the ends of said spring fingers, said annular surface adapted to guide a pin type contact into the opening defined by said spring fingers.
7. The electrical contact as recited in Claim 3 wherein the forward end of said sleeve extends beyond the ends of the spring fingers of said tubular member and terminates in an annular surface that extends radially inwardly towards said spring fingers to define an opening slightly larger than the opening defined by the ends of said spring fingers, said annular surface adapted to guide a pin type contact into the opening defined by said spring fingers.
8. The electrical contact as recited in Claim 4 wherein the forward end of said sleeve extends beyond the ends of the spring fingers of said tubular member and terminates in an annular surface that extends radially inwardly towards said spring fingers to define an opening slightly larger than the opening defined by the ends of said spring fingers, said annular surface adapted to guide a pin type contact into the opening defined by said spring fingers.
9. An electrical contact assembly comprising:
a pin type contact having a forward mating portion and a rear wire receiving portion;
a stamped and formed tubular member having a rear wire receiving portion and a forward mating portion, said forward mating portion of said tubular member including a plurality of resiliently deflectable spring fingers in pressure contact with the forward mating portion of said pin type contact; and a sleeve coaxially mounted on said tubular member, said sleeve having a rear portion and a forward portion, and at least one inwardly extending annular boss in the forward portion of the outer sleeve coaxial with and spaced from said spring fingers, said boss adapted to engage each spring finger upon further outward deflec-tion.
a pin type contact having a forward mating portion and a rear wire receiving portion;
a stamped and formed tubular member having a rear wire receiving portion and a forward mating portion, said forward mating portion of said tubular member including a plurality of resiliently deflectable spring fingers in pressure contact with the forward mating portion of said pin type contact; and a sleeve coaxially mounted on said tubular member, said sleeve having a rear portion and a forward portion, and at least one inwardly extending annular boss in the forward portion of the outer sleeve coaxial with and spaced from said spring fingers, said boss adapted to engage each spring finger upon further outward deflec-tion.
10. The electrical contact as recited in Claim 9 wherein the annular boss is located adjacent the forward half of said spring fingers.
11. The electrical contact as recited in Claim 1 wherein the forward end of said sleeve extends beyond the ends of the spring fingers of said tubular member and terminates in an annular surface that extends radially inwardly towards said spring fingers to define an opening to guide the pin type contact into the opening defined by said spring fingers.
12. The electrical contact as recited in Claim 2 wherein the forward end of said sleeve extends beyond the ends of the spring fingers of said tubular member and terminates in an annular surface that extends radially inwardly towards said spring fingers to define an opening adapted to guide the pin type contact into the opening defined by said spring fingers.
13. An electrical socket contact assembly comprising:
a stamped and formed tubular member having a rear wire receiving portion and a forward mating portion, said forward mating portion of said tubular member including a plurality of resiliently deflectable spring fingers adapted to receive a pin type contact through the opening defined by the ends of said spring fingers; and a sleeve coaxially mounted on to the outer periphery of said tubular member, said sleeve having a rear portion, and a forward portion, and at least one boss extending radially inwardly extending annular boss in the forward portion of the outer said sleeve, characterized in that said sleeve is one-piece and includes a medial portion which extends radially outward from said sleeve and said boss forms a continuous annular shoulder around and being coaxial with said tubular member and mounted to the outer periphery thereof and, said boss being spaced from said spring fingers and normally free from engagement therewith but said boss being adapted to engage each spring finger that is deflected radially outwardly a predetermined distance by a pin shaped contact inserted into the opening defined by said spring fingers.
a stamped and formed tubular member having a rear wire receiving portion and a forward mating portion, said forward mating portion of said tubular member including a plurality of resiliently deflectable spring fingers adapted to receive a pin type contact through the opening defined by the ends of said spring fingers; and a sleeve coaxially mounted on to the outer periphery of said tubular member, said sleeve having a rear portion, and a forward portion, and at least one boss extending radially inwardly extending annular boss in the forward portion of the outer said sleeve, characterized in that said sleeve is one-piece and includes a medial portion which extends radially outward from said sleeve and said boss forms a continuous annular shoulder around and being coaxial with said tubular member and mounted to the outer periphery thereof and, said boss being spaced from said spring fingers and normally free from engagement therewith but said boss being adapted to engage each spring finger that is deflected radially outwardly a predetermined distance by a pin shaped contact inserted into the opening defined by said spring fingers.
14. An electrical contact assembly comprising:
a pin type contact having a forward mating portion and a rear wire receiving portion;
a stamped and formed tubular member having a rear wire receiving portion and a forward mating portion, said forward mating portion of said tubular member including a plurality of resiliently, radially, deflectable spring fingers in pressure contact with the forward mating portion of said pin type contact; and a sleeve coaxially mounted on said tubular member, said sleeve having a rear portion, a medial portion, a forward portion, and at least one inwardly extending annular boss in the forward portion of the outer sleeve, characterized in that said medial portion extends radially outward from said sleeve to define a retention shoulder and said boss forms a continuous annular shoulder that is coaxial with and spaced radially outward from said spring fingers, said boss being adapted to engage each spring finger upon further outward radial deflection.
a pin type contact having a forward mating portion and a rear wire receiving portion;
a stamped and formed tubular member having a rear wire receiving portion and a forward mating portion, said forward mating portion of said tubular member including a plurality of resiliently, radially, deflectable spring fingers in pressure contact with the forward mating portion of said pin type contact; and a sleeve coaxially mounted on said tubular member, said sleeve having a rear portion, a medial portion, a forward portion, and at least one inwardly extending annular boss in the forward portion of the outer sleeve, characterized in that said medial portion extends radially outward from said sleeve to define a retention shoulder and said boss forms a continuous annular shoulder that is coaxial with and spaced radially outward from said spring fingers, said boss being adapted to engage each spring finger upon further outward radial deflection.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US48018683A | 1983-03-29 | 1983-03-29 | |
| US480,186 | 1983-03-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1209662A true CA1209662A (en) | 1986-08-12 |
Family
ID=23906984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000449390A Expired CA1209662A (en) | 1983-03-29 | 1984-03-12 | Two-piece electrical socket contact assembly |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0123096A1 (en) |
| JP (1) | JPS59184476A (en) |
| CA (1) | CA1209662A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4734064A (en) * | 1986-08-29 | 1988-03-29 | Amphenol Corporation | Electrical socket contact with convex engaging tines |
| DE8715509U1 (en) * | 1987-11-23 | 1988-02-04 | Grote & Hartmann Gmbh & Co Kg, 5600 Wuppertal | Round plug sleeve |
| JP2916566B2 (en) * | 1993-05-14 | 1999-07-05 | 矢崎総業株式会社 | Socket type terminal |
| US5498179A (en) * | 1994-05-04 | 1996-03-12 | Woodhead Industries, Inc. | Electrical connector |
| JP3286177B2 (en) * | 1996-08-30 | 2002-05-27 | 矢崎総業株式会社 | ID connector |
| CN101938057A (en) * | 2010-07-09 | 2011-01-05 | 安费诺科耐特(西安)科技有限公司 | Inter-board multi-plug socket connector |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3836947A (en) * | 1973-02-23 | 1974-09-17 | Amp Inc | Electrical contact receptacle with helper spring |
| US4168878A (en) * | 1978-05-22 | 1979-09-25 | Amp Incorporated | Pin and socket type electrical terminals |
| US4621887A (en) * | 1981-03-09 | 1986-11-11 | Allied Corporation | Electrical contact |
| FR2507021A1 (en) * | 1981-06-01 | 1982-12-03 | Itt Composants Instr | SLEEVE FOR FEMALE ELECTRIC CONTACT AND MANUFACTURING METHOD FOR OBTAINING SAME |
-
1984
- 1984-03-12 EP EP84102661A patent/EP0123096A1/en not_active Withdrawn
- 1984-03-12 CA CA000449390A patent/CA1209662A/en not_active Expired
- 1984-03-29 JP JP5971884A patent/JPS59184476A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59184476A (en) | 1984-10-19 |
| EP0123096A1 (en) | 1984-10-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |