US3897125A - Captivated grounding spring - Google Patents
Captivated grounding spring Download PDFInfo
- Publication number
- US3897125A US3897125A US488176A US48817674A US3897125A US 3897125 A US3897125 A US 3897125A US 488176 A US488176 A US 488176A US 48817674 A US48817674 A US 48817674A US 3897125 A US3897125 A US 3897125A
- Authority
- US
- United States
- Prior art keywords
- shell
- fingers
- annularly shaped
- radially outwardly
- lip
- 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
Links
Images
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
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
- H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
- H01R13/6581—Shield structure
- H01R13/6582—Shield structure with resilient means for engaging mating connector
- H01R13/6583—Shield structure with resilient means for engaging mating connector with separate conductive resilient members between mating shield members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
Definitions
- grounding spring and connector shell assembly in which the grounding spring has a split annularly shaped portion for entry into the connector shell.
- a split lip at the rear axial end of the split portion is provided for seating behind an internal shoulder on the connector shell.
- An axially extending key on the internal surface of the shell engages between the end segments of the lip.
- the front axial end of the annularly shaped portion has folded back circumferentially spaced spring fingers for engagement over the connector shell external surface adjacent the front end of the shell and for engagement against the internal surface of a mating shell.
- the present invention relates in general to grounding springs for electrical'connectors and more particularly to an improved and more economical grounding spring and connector shell assembly.
- a grounding spring is provided between telescopingly engaged metal connector shells for insuring the shells are grounded when they engage or mate.
- the spring is usually secured to an associated one of the shells by soldering, welding, swaging or magneforming, for example. Securing the spring to the shell by means of soldering or the like presents time consuming and expensive assembly problems.
- springs in the shape of a split ring have been secured to the outer periphery of a shell and seated in spaced axially extending undercuts or recesses on the shell outer periphery but these springs must usually be deformed manually prior to fitting on the shell, while the provision of the axially extending recesses is expensive.
- Another form of a split ring having axially extending cantilever spring contact fingers utilizes a radial flange and is expanded to fit over the shell and then allowed to contract for fitting the flange in a recess of the shell, however, electrical engagement and retention are uncertain.
- a grounding spring having an annular configuration or ring shaped portion is provided for engaging against the inner surface of the supporting shell on which the spring is carried or mounted, with the ring shaped portion having a radially outwardly extending annularly shaped lip at the rear axial end and folded back cantilever grounding spring fingers at the front axial end.
- the spring fingers are overlappingly spaced from the ring shaped portion for nestingly receiving the front end of the shell between the fingers and ring shaped portion. The fingers therefore engage the adjacent surfaces of the telescopingly engaged connector shells to electrically connect the shells.
- the annularly shaped lip formed at the one axial end of the ring shaped portion fits or engages behind and against an internal radial shoulder on the supporting connector shell so that the spring cannot move axially.
- the ring shaped portion and lip also have a split or passageway for receiving a key on the internal surface of the supporting shell.
- the key is normally provided for aligning the dielectric carrying, the contacts in the shell and it also serves for aligning the grounding spring and holding the spring against rotation.
- the location of the end segments of the split annularly shaped portion and lip in the shell protects the same against damage.
- FIG. 1 is a sectional view of a portion of a connector and the grounding spring
- FIG. 1a is an enlarged fragmentary sectional view of a portion of the shell and spring
- FIG. 2 is a sectional view taken along line 2-2 in FIG. 1;
- FIG. 3 is a sectional view taken along the line 33 in FIG. 1;
- FIG. 4 is a developed elevational view of the grounding spring before forming into an annular shape
- FIG. 5 is an end elevational view of the grounding spring shown in FIG. 4.
- FIG. 6 is a front elevational view of the grounding spring formed in an annular shape.
- a connector assembly is indicated by the reference character 10.
- the assembly comprises a float or resiliently mounted connector shell 12 which may have guide bushing means 14, for example, to receive guide pin means 16 on a second connector shell 18 for guiding and aligning the connector shells l2 and 18.
- Shell 18 has an annularly shaped front end portion 20 for telescoping engagement over an annularly shaped front end portion 22 of shell 12.
- the connector shells may be rack and panel mounted with a dielectric insert assembly such as 24 provided in each shell for carrying and retaining a plurality of contacts such as 26, each engaging respective contact 28 of a plurality of contacts carried by a dielectric insert assembly in the mating or engaged connector shell 18.
- a bayonet key such as 30 on the front end 20 of shell 18 engages in a keyway or slot 32 provided in an overlapping ring portion 34 on shell 12 for insuring correct alignment between the shells or for use in shell alignment in the event the guide pin and guide bushing means are omitted.
- a seal 36 is positioned between the end of connector shell 18 and a radially outwardly extending shoulder 38 on connector shell 12.
- a split ring grounding spring 40 is engaged with the front end of shell 12.
- Spring 40 comprises an annularly shaped portion 42 as best seen in FIG. 6 with opposite end segments of the portion 42 defining an axially extending split or passageway 44.
- annularly shaped portion 42 At the front or one axial end or edge of annularly shaped portion 42, a plurality of cantilever folded back spring fingers 46 are provided that project axially back over portion 42 in overlapping radially outwardly spaced relationship to the portion 42.
- the fingers 46 are engaged between the external peripheral surface of the front end of connector shell 12 and the internal peripheral surface of the front end of connector shell 18.
- the fingers 46 are located in spaced circumferential positions and are generally equispaced as seen in FIG. 4, except where alignment keys or the like are provided on one of the shells for engaging corresponding recesses or keyways provided on the mating shell.
- the spring fingers 46 are located in an overlapping axial position relative the annularly shaped portion or split ring 42 and each is suspended from the front axial end of the split ring by a folded back or U shaped portion 48.
- the spring fingers 46 each have a concave radially bowed out section 50 intermediate the folded back portion 48 and the free ends 52 of each spring finger for engaging against the internal surface of connector shell 18.
- the internal surface of shell 18 engages each concave section or portion 50, it of course applies radially inward pressure to the concave section 50 for forcing the juncture of the free cantilever end portion 52 with section 50 firmly against the shell 12.
- the rear or other axial end or edge of the annularly shaped portion 42 has an integrally formed radially outwardly extending lip 54 which engages behind a radially outwardly extending shoulder 56 formed on the internal surface of the connector shell 12 and spaced axially rearwardly of the front end of shell 12.
- the split or annularly shaped ring 40 has an axially extending split or passageway 44 therein that extends through the lip 54.
- the split 44 in the lip receives a key 58 extending axially rearwardly from the shoulder 56 on the internal surface of shell 12.
- Key 58 projects axially of the shell 12 from shoulder 56 to fit the passageway in the lip 54 or between the end segments of the lip for polarizing or correctly aligning the grounding spring fingers 46 with the shells or the keys or lugs 59 on shell 12 and preventing rotational movement therebetween.
- the key 58 is also received in a keyway of the dielectric insert assembly 24 so that it also serves to properly align the dielectric insert assembly and contacts with the shell.
- the dielectric insert assembly it will be noted, has a radially outwardly extending shoulder 60 thereon for abutting engagement with the rear annular surface of lip 54 so that the lip is nestingly and securely received between the shoulders 56 and 60.
- the dielectric insert assembly 24 also has a reduced outer peripheral portion which fits into the front end of shell 12 to engage the inner periphery of the annularly shaped portion 42, which is therefore also nestingly received and protected by the adjacent internal surface of shell 12 and the outer surface of the assembly 24.
- the fingers 46 are substantially /32 inch long and 0.04 inch wide with a pitch of 0.06 inch, except where keys 59 are provided, the fingers are omitted.
- Lip 54 is substantially 0.025 inch high.
- the fingers and lip are formed on respective axial ends of the grounding spring 40 while the spring is flat or generally planar as shown in FIG. 4. It will be noted from FIG. 5 that the fingers normally extend radially outwardly of the portion 42 and the ends of the fingers attached to portion 42 are formed on a radius of substantially 0.015 inch.
- the spring which comprises a resilient conductive metal, is
- the spring thus has an unrestrained circumferential dimension larger than the circumferential dimension of the front end of shell 22 and corresponding to the shape of the front end 22 of shell 12. as shown in FIG. 6.
- the front end 22 of the shell 12 is inserted between the free ends 52 and the fingers 46 and the annularly shaped portion 42.
- the free ends 52 extend radially outwardly to provide a funnel shaped guideway for the shell end and that the annular portion 42 is reduced circumferentially, as permitted by split or passageway 44 to facilitate entry of the lip 54 and the annular portion into shell 12. If the free ends 52 forming the guideway are omitted, the free ends of the fingers are simply spaced from portion 42 by a distance sufficient to allow entrance of the connector shell between the fingers and portion 42.
- a distance of 3/32 inch including the wall thickness of the fingers and portion 42 is sufficient to enable receipt of the shell wall between the fingers and portion 42.
- the spring 40 is moved axially relative the shell 12 until the lip 54 is aligned with the key 58.
- the annular portion contracts, of course, only by a distance necessary to move portion 42 and lip 54 through the shell so that its deformation is automatically controlled by the thickness ofthe shell wall and thereby the basic shape and resiliency of the spring is retained.
- annularly shaped portion of resilient conductive material having an axially extending passageway therein for enabling engagement of said annularly shaped portion with said one surface of said connector shell;
- each finger has a free end extending radially outwardly of said portion to form a guideway for receiving the front end of said shell between said fingers and said portion.
- each finger free end extends radially outwardly of said' portion to form a guideway for receiving the front end of said shell between said fingers and said portion.
- a grounding spring for use in a connector shell assembly including a first connector shell having a front end of annular shape adapted to telescopingly engage in the front end of a second connector shell having an annular shape with said first shell having a radially outwardly extending shoulder formed in the internal surface of said first shell spaced axially rearwardly of the front end of said first shell and a key on the internal surface of said first shell extending axially rearwardly from said shoulder to locate a dielectric insert assembly carrying a plurality of contacts in said first shell, the improvement comprising:
- annularly shaped portion of resilient conductive material corresponding in shape to the annular shape of the front end of said first shell and having an axially extending passageway therein for enabling reduction in the circumferential dimension of said annularly shaped portion for receipt in the front end of said first connector shell;
- a plurality of circumferentially spaced cantilever spring fingers formed at the front axial end of said annularly shaped portion with said fingers arranged in folded back relationship to said portion and in overlapping radially outwardly spaced relationship to said portion for receiving the front end of said first shell between said portion and said fingers and with said fingers adapted to engage the internal periphery of the front end of the second shell in response to the telescoping engagement of the front end of said first shell in the front end of said second shell;
- a grounding spring and connector shell assembly comprising;
- a connector shell having an annularly shaped front end with a radially outwardly extending shoulder formed in the internal surface of said shell spaced rearward-1y of said front end and a key extending axially rearwardly of said shoulder;
- annularly shaped portion of resilient conductive material having an axial passageway therein extending between opposite axial ends of said portion for enabling reduction in the circumferential dimension of said portion for receipt in said front end;
- a plurality of cantilever spring fingers formed at one axial end of said portion and folded back in overlapping radially outwardly spaced relationship to said portion for receiving front end of said shell between said fingers and said portion;
- a dielectric insert for carrying a plurality of contacts with said dielectric insert having a radially outwardly extending shoulder for abutting engagement with said lip and an axially extending keyway for receiving said key.
Landscapes
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
Description
Claims (13)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US488176A US3897125A (en) | 1974-07-12 | 1974-07-12 | Captivated grounding spring |
DE19752528186 DE2528186A1 (en) | 1974-07-12 | 1975-06-24 | GROUND SPRING FOR ELECTRIC CONNECTOR |
GB28753/75A GB1514502A (en) | 1974-07-12 | 1975-07-08 | Captive grounding spring |
JP50083642A JPS5824909B2 (en) | 1974-07-12 | 1975-07-09 | Electric connector set spring |
CA231,247A CA1027652A (en) | 1974-07-12 | 1975-07-10 | Captivated grounding spring |
FR7521936A FR2278178A1 (en) | 1974-07-12 | 1975-07-11 | ENCLOSURE OF ELECTRICAL CONNECTORS, EQUIPPED WITH AN EARTHING SPRING |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US488176A US3897125A (en) | 1974-07-12 | 1974-07-12 | Captivated grounding spring |
Publications (1)
Publication Number | Publication Date |
---|---|
US3897125A true US3897125A (en) | 1975-07-29 |
Family
ID=23938627
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US488176A Expired - Lifetime US3897125A (en) | 1974-07-12 | 1974-07-12 | Captivated grounding spring |
Country Status (6)
Country | Link |
---|---|
US (1) | US3897125A (en) |
JP (1) | JPS5824909B2 (en) |
CA (1) | CA1027652A (en) |
DE (1) | DE2528186A1 (en) |
FR (1) | FR2278178A1 (en) |
GB (1) | GB1514502A (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4022966A (en) * | 1976-06-16 | 1977-05-10 | I-T-E Imperial Corporation Efcor Division | Ground connector |
US4030797A (en) * | 1975-06-11 | 1977-06-21 | International Telephone And Telegraph Corporation | Electrical connector |
US4082940A (en) * | 1976-03-11 | 1978-04-04 | Eldon Industries, Inc. | Soldering iron with replaceable heating element and a grounded handle and components thereof |
US4239318A (en) * | 1979-07-23 | 1980-12-16 | International Telephone And Telegraph Corporation | Electrical connector shield |
EP0073957A2 (en) * | 1981-09-03 | 1983-03-16 | Allied Corporation | Shielded electrical connector |
US4500159A (en) * | 1983-08-31 | 1985-02-19 | Allied Corporation | Filter electrical connector |
FR2579029A1 (en) * | 1985-03-12 | 1986-09-19 | Drogo Pierre | ELECTRICAL CONNECTOR |
US4812137A (en) * | 1987-11-25 | 1989-03-14 | Itt Corporation | Connector with EMI/RFI grounding spring |
US4874337A (en) * | 1988-11-23 | 1989-10-17 | Amp Incorporated | Method of mounting a replaceable EMI spring strip |
US5052948A (en) * | 1990-11-19 | 1991-10-01 | Itt Corporation | Connector ground and shield |
US10770825B2 (en) | 2018-10-24 | 2020-09-08 | Aptiv Technologies Limited | Electrical contact spring and electrical assembly including same |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2832243C3 (en) * | 1978-07-21 | 1982-03-11 | Siemens AG, 1000 Berlin und 8000 München | Multi-row connector with fitted shield plate |
GB2156854B (en) * | 1984-04-06 | 1987-03-11 | Atomic Energy Authority Uk | Titanium nitride dispersion strengthened alloys |
DE3544791A1 (en) * | 1985-12-18 | 1987-06-19 | Euscher Gmbh & Co Ewald | FRAME FOR MULTIPOLE CONNECTORS |
JPH0672913B2 (en) * | 1986-12-18 | 1994-09-14 | 新技術事業団 | Magnetic flux measurement device |
DE8707004U1 (en) * | 1987-05-15 | 1987-07-09 | HTS-Elektrotechnik GmbH, 5206 Neunkirchen-Seelscheid | Connectors |
DE102020110291A1 (en) | 2020-04-15 | 2021-10-21 | Harting Electric Gmbh & Co. Kg | Circular connector with shield connection |
DE102020210534B4 (en) | 2020-04-30 | 2023-03-23 | Te Connectivity Germany Gmbh | CONTACT SYSTEM |
CN113594742A (en) * | 2020-04-30 | 2021-11-02 | 泰连德国有限公司 | Contact ring and contact system |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3534319A (en) * | 1969-02-06 | 1970-10-13 | Francis Queirolo | Powerpole |
US3830957A (en) * | 1973-08-20 | 1974-08-20 | Amex Syst Inc | Grounding device for shielded electrical cable |
-
1974
- 1974-07-12 US US488176A patent/US3897125A/en not_active Expired - Lifetime
-
1975
- 1975-06-24 DE DE19752528186 patent/DE2528186A1/en not_active Withdrawn
- 1975-07-08 GB GB28753/75A patent/GB1514502A/en not_active Expired
- 1975-07-09 JP JP50083642A patent/JPS5824909B2/en not_active Expired
- 1975-07-10 CA CA231,247A patent/CA1027652A/en not_active Expired
- 1975-07-11 FR FR7521936A patent/FR2278178A1/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3534319A (en) * | 1969-02-06 | 1970-10-13 | Francis Queirolo | Powerpole |
US3830957A (en) * | 1973-08-20 | 1974-08-20 | Amex Syst Inc | Grounding device for shielded electrical cable |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4030797A (en) * | 1975-06-11 | 1977-06-21 | International Telephone And Telegraph Corporation | Electrical connector |
US4082940A (en) * | 1976-03-11 | 1978-04-04 | Eldon Industries, Inc. | Soldering iron with replaceable heating element and a grounded handle and components thereof |
US4022966A (en) * | 1976-06-16 | 1977-05-10 | I-T-E Imperial Corporation Efcor Division | Ground connector |
US4239318A (en) * | 1979-07-23 | 1980-12-16 | International Telephone And Telegraph Corporation | Electrical connector shield |
US4544227A (en) * | 1981-09-03 | 1985-10-01 | Allied Corporation | Shielded electrical connector |
EP0073957A2 (en) * | 1981-09-03 | 1983-03-16 | Allied Corporation | Shielded electrical connector |
EP0073957A3 (en) * | 1981-09-03 | 1983-08-24 | Allied Corporation | Shielded electrical connector |
US4500159A (en) * | 1983-08-31 | 1985-02-19 | Allied Corporation | Filter electrical connector |
EP0137116A2 (en) * | 1983-08-31 | 1985-04-17 | Allied Corporation | A filter electrical connector |
EP0137116A3 (en) * | 1983-08-31 | 1986-05-14 | Allied Corporation | A filter electrical connector |
FR2579029A1 (en) * | 1985-03-12 | 1986-09-19 | Drogo Pierre | ELECTRICAL CONNECTOR |
US4812137A (en) * | 1987-11-25 | 1989-03-14 | Itt Corporation | Connector with EMI/RFI grounding spring |
US4874337A (en) * | 1988-11-23 | 1989-10-17 | Amp Incorporated | Method of mounting a replaceable EMI spring strip |
US5052948A (en) * | 1990-11-19 | 1991-10-01 | Itt Corporation | Connector ground and shield |
US10770825B2 (en) | 2018-10-24 | 2020-09-08 | Aptiv Technologies Limited | Electrical contact spring and electrical assembly including same |
Also Published As
Publication number | Publication date |
---|---|
GB1514502A (en) | 1978-06-14 |
JPS5131883A (en) | 1976-03-18 |
FR2278178A1 (en) | 1976-02-06 |
DE2528186A1 (en) | 1976-01-29 |
FR2278178B1 (en) | 1978-12-29 |
CA1027652A (en) | 1978-03-07 |
JPS5824909B2 (en) | 1983-05-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: ALLIED CORPORATION COLUMBIA ROAD AND PARK AVENUE, Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:BUNKER RAMO CORPORATION A CORP. OF DE;REEL/FRAME:004149/0365 Effective date: 19820922 |
|
AS | Assignment |
Owner name: CANADIAN IMPERIAL BANK OF COMMERCE, NEW YORK AGENC Free format text: SECURITY INTEREST;ASSIGNOR:AMPHENOL CORPORATION;REEL/FRAME:004879/0030 Effective date: 19870515 |
|
AS | Assignment |
Owner name: AMPHENOL CORPORATION, LISLE, ILLINOIS A CORP. OF D Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ALLIED CORPORATION, A CORP. OF NY;REEL/FRAME:004844/0850 Effective date: 19870602 Owner name: AMPHENOL CORPORATION, A CORP. OF DE, ILLINOIS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ALLIED CORPORATION, A CORP. OF NY;REEL/FRAME:004844/0850 Effective date: 19870602 |
|
AS | Assignment |
Owner name: BANKERS TRUST COMPANY, AS AGENT Free format text: SECURITY INTEREST;ASSIGNOR:AMPHENOL CORPORATION, A CORPORATION OF DE;REEL/FRAME:006035/0283 Effective date: 19911118 |
|
AS | Assignment |
Owner name: AMPHENOL CORPORATION A CORP. OF DELAWARE Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:CANADIAN IMPERIAL BANK OF COMMERCE;REEL/FRAME:006147/0887 Effective date: 19911114 |
|
AS | Assignment |
Owner name: AMPHENOL CORPORATION, CONNECTICUT Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:BANKERS TRUST COMPANY;REEL/FRAME:007317/0148 Effective date: 19950104 |