US3579155A - Filtered connector pin contact - Google Patents
Filtered connector pin contact Download PDFInfo
- Publication number
- US3579155A US3579155A US613346A US3579155DA US3579155A US 3579155 A US3579155 A US 3579155A US 613346 A US613346 A US 613346A US 3579155D A US3579155D A US 3579155DA US 3579155 A US3579155 A US 3579155A
- Authority
- US
- United States
- Prior art keywords
- ferrule
- central portion
- sleeve
- contact
- conductive
- 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
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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
- H01R13/66—Structural association with built-in electrical component
- H01R13/719—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters
- H01R13/7197—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters with filters integral with or fitted onto contacts, e.g. tubular filters
Definitions
- the invention relates to a filtered connector used for example with an instrument enclosed in a case or cabinet.
- the conductor is utilized for making connection between an external conductor or cable, and internal conductors within the case.
- the filtered connector includes a main structural component mounted in the case, and pin contacts removably mounted in the structural component.
- the pin contacts include relatively fragile elements such as a ceramic sleeve which is subject to relatively easy breaking. In inserting the pin contacts into, and removing them from the structural component, they are often misaligned, heretofore causing serious breakage.
- the present invention relates to means for preventing breakage of the fragile elements of pin contacts of the character referred to above.
- the pin contact of the present invention includes a central metal member and fragile ferrules or sleeves mounted thereon, and flexible and resilient washers on the central member and end-loading ferrules or sleeves, whereby to provide flexibility to the assembly and preventing breakage of the fragile components.
- Other objects of the invention are to eliminate air voids with consequent constant inductance and uniform electrical properties; to enable a greater variety of metals to be used in the body portion of the pin contact; to increase the strength of the pin contact; and to provide a structure having a tendency to center itself while being inserted into the socket.
- FIGURE of the drawing is an axial sectional view ofthe pin contact, shown in relation to the structural component of the filtered connector in which it is mounted, the latter being shown in clot-dash lines.
- the pin contact of the invention is indicated in its entirety at and shown mounted in a main structural component or member 12 of a filtered connector.
- the relationship of the pin contact to the main structural component is described in detail in the copending application referred to above, the present inventor being one of the coinventors of that application.
- this pin contact includes a metal body member, preferably of copper which for manufacturing purposes may be made of a plurality of separate elements connected together.
- the body member includes a central portion 16 in the form of a rod of reduced diameter, an enlargement or collar 18 adjacent the front forming a rearwardly facing shoulder 20, and another enlargement 22 at the rear forming a forwardly facing shoulder 24.
- the pin contact also includes a reduced diameter front element 23 which directly contacts with the contacts of an external connector.
- An internal conductor 26 is connected to the real element of the pin contact by suitable means such as by crimping as indicated at 28, this conductor 26 being connected with an insn'umentality within the case in which the filtered connector is mounted, this case being indicated diagrammatically and fragmentarily at 30 (center bottom), both the aforesaid front and rear elements of the contact may be generally considered as electrical connection elements of the contact pin.
- the pin contact includes a ferrule 32 of ferrite, preferably in the form of a plurality of sections 'butted end-to-end and mounted directly on the central reduced portion 16 of the body.
- a ferrule 32 of ferrite Surrounding the ferrule 32 is an outer cylinder or sleeve 34 of ceramic material and preferably a single integral element, this cylinder preferably being longer than the ferrule 32, the ferrule and cylinder together being also indentified as ferrule means.
- the ceramic sleeve is brittle and easily breakable, while the ferrite ferrule is relatively disintegratable as from vibration.
- the cylinder or sleeve 34 forms a dielectric element of a capacitor indicated in its entirety at 36 and including, in addition to the ceramic sleeve, a pair of inner plates 38 and a single outer plate 40, both of which are generally cylindrical.
- the plates 38, 40 are preferably in the form of adherent coatings on the ceramic sleeve, applied in a known manner.
- the two inner plates 38 are spaced apart axially forming a gap as indicated at 42 and have radial flanges 44 at their ends turned over on the ends of the ceramic sleeve.
- the outer plate 40 is a single cylindrical sleeve formed on the outer surface of the ceramic sleeve and of shorter axial length than that ceramic sleeve.
- a pair of washers 46 of T-shape cross section each having a reduced portion48 fitted within the outer ceramic sleeve and engaging the end of the inner ferrite ferrule, and an outer large diameter portion 50 directly engaging the shoulders 20, 24 and also engaging the ends of the outer ceramic sleeve 34.
- the dimensions and proportions of the various elements are such that the washers 46 are at least partially compressed so as to provide a constant biasing effect on both the inner ferrite ferrule 32 and the outer ceramic sleeve 34 to provide axial centering effect and to fill all of the radial space between the ends of the outer ceramic sleeve and the central reduced portion 16 of the body.
- the washers 46 are of flexible and resilient nature, being of rubber, or rubberlike material, of known kind, containing conductive material therein to provide conduction between the inner plates38 and the enlargements of the body through the shoulders 20, 24.
- pin contact In the use of the pin contact, it is inserted into a pin cavity or aperture 52 in the structural component or member 12.
- This pin cavity 52 includes the large main portion 54 receiving the major portion of the pin contact and a. reduced outer end portion 56 receiving the front pin element 23.
- a shoulder 58 is formed between the portions 54 and st of the pin cavity.
- Incorporated in the member 12 is a central plate 60 having prongs 61 extending into the pin cavity and engaging the outer plate 40 on the pin contact.
- the plate 60 has electrical contact engagement with elements 62 ofthe member 12 and through them with the element 30 of the case in which the device is mounted, all as fully described in the copending application referred to above.
- the filtered connector is specially adapted for removal of the pin contacts 10.
- These pin contacts may be inserted manually or by means of a tool and in so inserting them they are inserted fully until the enlargement l8 engages the shoulder 58.
- the main portion 54 of the pin cavity is only slightly larger than the pin contact in order to provide optimum positioning of the pin contact and consequent electrical contact engagement; the space between these two elements is here shown exaggerated.
- the pin contact is long relative to its diameter and if it is not aligned with the pin cavity in the inserting or removal steps, the pin. contact may be cocked or bent, and the brittle ceramic sleeve 34 broken.
- the flexible and resilient washers 46 provide flexibility to the structure, eliminating or greatly minimizing the damage noted.
- the washers allow pin deflection for angular misalignment between the pin contact and the pin cavity.
- the device is self-damping, that is, the rubber or material of the washers does not transmit shock and'vibration.
- the compression provided in the washers increases the strength of the pin because of the axial or end-loading, both in position in the pin cavity and out of it. In the insertion or removal of the pin, any misalignment or bending is counteracted by a tendency of the elements of the pin contact to return to their original position.
- the washers hold the sections of the ferrule in abutted relation to eliminate air voids between sections of the ferrule and to thereby avoid electrical discontinuities, constant inductance and consequent uniform electrical properties.
- the washer prevent disintegration of the ferrite ferrule heretofore caused by vibration imposed on the device.
- the structure enables insertion and removal of the pin a great number of times with standard tools without breaking or other damage to the pin.
- a filter contact unit for an electrical connector, an elongated conductive body having first and second end por tions and an elongated central portion of reduced diameter with shoulders separating said end portions from said central portion, impedance means around said elongated central portion comprising a plurality of separate sections that are axially movable along said central portion, capacitance sleeve means of dielectric material surrounding said central portion, inner conductive sleeve means, outer conductive sleeve means on the outer surface of said capacitance sleeve means, and support and electrical connection means for resiliently supporting said capacitance sleeve means from said conductive body and for providing electrical connection between said inner conductive sleeve means and said conductive body, said support and electrical connection means including washers of a resilient conductive material interposed between said conductive body and said inner conductive sleeve means at each end of said capacitance sleeve means being in pressure engagement with said shoulders and compressed to hold said impedance sections butted in end-to
- said inner conductive sleeve means including a first sleeve engaged by said washer and a second sleeve disposed in end to-end spaced relation to said first sleeve, and said support and electrical connection means comprising a second washer interposed between said conductive body and said second sleeve, said second washer being engaged between said ferrule means and the other of said shoulders, the axial length of said capacitance sleeve means being less than the distance between said shoulders and greater than the length of said ferrule means, each of said washers being generally T-shaped and including the portion compressed axially between the ends of said capacitance sleeve means and said shoulders and a portion compressed radially between said capacitance sleeve means and said central portion with each washer being additionally compressed axially between said ferrule means and said shoulders.
- An elongated filter pin contact having specified electrical signal transmission characteristics when positioned within an electrical connector of the type wherein a plurality of contact pins are both releasably retained and held in electrical contact with a conductive member within the connector and in specified respective operating positions so as to permit the selective insertion and withdrawal of said contacts from the connector on an individual basis through the use of manually manipulatable tools conditionally subjecting the contact to bending moments during the insertion and withdrawal of the contact in and from the connector
- said filter pin comprising: an axially substantially straight-line flexible elongated body of electrically conductive material having a central portion extending along a substantial part of the length of said body with electrically conductive shoulder means positioned at each extremity of said central portion, said body extending a substantial distance axially away from each of said shoulder means and said central portion to form first and second electrical connection elements at least one of which may be mechanically engaged by a manually manipulated tool for inserting and withdrawing the contact in and from a connector; ferrule means having inner and outer surfaces surrounding said central
Abstract
Description
Claims (4)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US61334667A | 1967-02-01 | 1967-02-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3579155A true US3579155A (en) | 1971-05-18 |
Family
ID=24456958
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US613346A Expired - Lifetime US3579155A (en) | 1967-02-01 | 1967-02-01 | Filtered connector pin contact |
Country Status (5)
Country | Link |
---|---|
US (1) | US3579155A (en) |
FR (1) | FR1566329A (en) |
GB (1) | GB1218951A (en) |
NO (1) | NO129429B (en) |
SE (1) | SE349702B (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3764943A (en) * | 1972-05-15 | 1973-10-09 | Bendix Corp | Filter contact for an electrical connector |
US3781724A (en) * | 1972-05-30 | 1973-12-25 | Moore Ind Inc | Terminal block |
US3879691A (en) * | 1971-07-28 | 1975-04-22 | Amp Inc | Pluggable filter unit |
US4187481A (en) * | 1977-12-23 | 1980-02-05 | Bunker Ramo Corporation | EMI Filter connector having RF suppression characteristics |
US4198613A (en) * | 1978-05-17 | 1980-04-15 | Bunker Ramo Corporation | Filter contact |
EP0089558A1 (en) * | 1982-03-22 | 1983-09-28 | Allied Corporation | Filter connector with discrete particle dielectric |
US4952896A (en) * | 1988-10-31 | 1990-08-28 | Amp Incorporated | Filter assembly insertable into a substrate |
GB2273210A (en) * | 1992-12-04 | 1994-06-08 | Fichtel & Sachs Ag | Filtered connector |
US5413504A (en) * | 1994-04-01 | 1995-05-09 | Nt-T, Inc. | Ferrite and capacitor filtered coaxial connector |
US5417591A (en) * | 1992-12-04 | 1995-05-23 | Fichtel & Sachs Ag | Connection device for an electrical arrangement shielded by an electrically conductive wall of a housing |
US5586912A (en) * | 1992-11-09 | 1996-12-24 | Burndy Corporation | High density filtered connector |
US8062063B2 (en) | 2008-09-30 | 2011-11-22 | Belden Inc. | Cable connector having a biasing element |
US8469739B2 (en) | 2011-02-08 | 2013-06-25 | Belden Inc. | Cable connector with biasing element |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1064118A (en) * | 1975-04-28 | 1979-10-09 | Eric E. Vander Heyden | Filtered connector assembly with composite ground plane |
US4195272A (en) * | 1978-02-06 | 1980-03-25 | Bunker Ramo Corporation | Filter connector having contact strain relief means and an improved ground plate structure and method of fabricating same |
US4516815A (en) * | 1982-06-07 | 1985-05-14 | Spectrum Control, Inc. | RF filter connector |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2390905A (en) * | 1942-10-12 | 1945-12-11 | Gen Motors Corp | Oscillating joint |
US3275954A (en) * | 1963-08-20 | 1966-09-27 | Erie Technological Prod Inc | Multiple connector wherein pins have limited movement within housing and each pin has integral low-pass filter |
US3435387A (en) * | 1965-09-01 | 1969-03-25 | Allen Bradley Co | Solderless mounting filter connection |
-
1967
- 1967-02-01 US US613346A patent/US3579155A/en not_active Expired - Lifetime
-
1968
- 1968-01-29 SE SE01148/68A patent/SE349702B/xx unknown
- 1968-01-31 NO NO00388/68A patent/NO129429B/no unknown
- 1968-01-31 GB GB5044/68A patent/GB1218951A/en not_active Expired
- 1968-02-01 FR FR1566329D patent/FR1566329A/fr not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2390905A (en) * | 1942-10-12 | 1945-12-11 | Gen Motors Corp | Oscillating joint |
US3275954A (en) * | 1963-08-20 | 1966-09-27 | Erie Technological Prod Inc | Multiple connector wherein pins have limited movement within housing and each pin has integral low-pass filter |
US3435387A (en) * | 1965-09-01 | 1969-03-25 | Allen Bradley Co | Solderless mounting filter connection |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3879691A (en) * | 1971-07-28 | 1975-04-22 | Amp Inc | Pluggable filter unit |
US3764943A (en) * | 1972-05-15 | 1973-10-09 | Bendix Corp | Filter contact for an electrical connector |
US3781724A (en) * | 1972-05-30 | 1973-12-25 | Moore Ind Inc | Terminal block |
US4187481A (en) * | 1977-12-23 | 1980-02-05 | Bunker Ramo Corporation | EMI Filter connector having RF suppression characteristics |
US4198613A (en) * | 1978-05-17 | 1980-04-15 | Bunker Ramo Corporation | Filter contact |
EP0089558A1 (en) * | 1982-03-22 | 1983-09-28 | Allied Corporation | Filter connector with discrete particle dielectric |
US4484159A (en) * | 1982-03-22 | 1984-11-20 | Allied Corporation | Filter connector with discrete particle dielectric |
US4952896A (en) * | 1988-10-31 | 1990-08-28 | Amp Incorporated | Filter assembly insertable into a substrate |
US5586912A (en) * | 1992-11-09 | 1996-12-24 | Burndy Corporation | High density filtered connector |
US5417591A (en) * | 1992-12-04 | 1995-05-23 | Fichtel & Sachs Ag | Connection device for an electrical arrangement shielded by an electrically conductive wall of a housing |
GB2273210B (en) * | 1992-12-04 | 1996-08-07 | Fichtel & Sachs Ag | Connection device for an electrical arrangement shielded by an electrically conductive wall of a housing |
GB2273210A (en) * | 1992-12-04 | 1994-06-08 | Fichtel & Sachs Ag | Filtered connector |
US5413504A (en) * | 1994-04-01 | 1995-05-09 | Nt-T, Inc. | Ferrite and capacitor filtered coaxial connector |
US8062063B2 (en) | 2008-09-30 | 2011-11-22 | Belden Inc. | Cable connector having a biasing element |
US8075337B2 (en) | 2008-09-30 | 2011-12-13 | Belden Inc. | Cable connector |
US8113875B2 (en) | 2008-09-30 | 2012-02-14 | Belden Inc. | Cable connector |
US8506325B2 (en) | 2008-09-30 | 2013-08-13 | Belden Inc. | Cable connector having a biasing element |
US8469739B2 (en) | 2011-02-08 | 2013-06-25 | Belden Inc. | Cable connector with biasing element |
Also Published As
Publication number | Publication date |
---|---|
SE349702B (en) | 1972-10-02 |
GB1218951A (en) | 1971-01-13 |
FR1566329A (en) | 1969-05-09 |
NO129429B (en) | 1974-04-08 |
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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, 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 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 |
|
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 |