US3691511A - Plug connection contact with high security against burning off - Google Patents
Plug connection contact with high security against burning off Download PDFInfo
- Publication number
- US3691511A US3691511A US77903A US3691511DA US3691511A US 3691511 A US3691511 A US 3691511A US 77903 A US77903 A US 77903A US 3691511D A US3691511D A US 3691511DA US 3691511 A US3691511 A US 3691511A
- Authority
- US
- United States
- Prior art keywords
- contact
- connector
- contact element
- electrical
- mating
- 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
- H01R13/46—Bases; Cases
- H01R13/53—Bases or cases for heavy duty; Bases or cases for high voltage with means for preventing corona or arcing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
- H01H1/38—Plug-and-socket contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/38—Auxiliary contacts on to which the arc is transferred from the main contacts
Definitions
- the mating contact When being removed from the connector, the mating contact disengages from the inner contact portion of H 0 l the connector first, while maintaining electrical con- I tact with the outer portion of the connector AS the [58] Field of Search 339/262 273 mating contact element is further withdrawn, it disengages from the outer contact portion of the connector, [56] Rem'ences Cned and any arcing, occurring as a result of the discon- UNITED STATES PATENTS tinuity of low resistance contact, will occur between the mating contact element and the outer portion of 896,210 8/1908 James ..339/l11 the connector plug The outer portion f the connec 2,302,849 11/1942 Frank et 8.1.
- ..339/111 tor plug is composed of a material offering a high 3,138,336 2/1965 Fuller FX Sistance to buming off and is P id with an i in, :1 :3 g wardly inclined surface at the entry portion of the I e 3 I RR connector to cause arcing to take place on such FOREIGN PATENTS QR APPLICATIONS incline.
- the inner portion makes low resistance connection with the mating connector, and, by the action great Bmam 45 3 9 13 of the outer connector portion, is protected against rance th ff t f arcin 592,797 2/1934 Germany ..339/262 g 6 Claims, 2 Drawing Figures PLUG CONNECTION CONTACT WITH HIGH SECURITY AGAINST BURNING OFF BACKGROUND OF THE INVENTION 1.
- This invention relates to an electrical connection for high circuit loads.
- the invention relates to a new and improved electric connection'which is constructed such that high current electrical arcing is prevented from destroying the electrical contact portion of the connector as a mating contact element is withdrawn breaking contact with the connector.
- the present invention provides an electrical connector which provides both excellent electrical engagement of mating contact, and additionally, provides a means by which electrical arcing is controlled to the extent that burning-off of the portion of the contact providing electrical connection is eliminated.
- an object of the present invention is to provide an electrical contact element which, under high load, is not substantially affected by arcing occurring upon disconnection of mating contact elements.
- a further object of the invention is to provide a connector of the type described above in which many circuit cycles of connecting and disconnecting can be accomplished without any substantial damage to the connector.
- a further object of the invention is to provide a connector of the type described above which will withstand rough treatment over a period of long use.
- Yet another and more specific object of the invention is to provide an electrical connector constructed of an inner portion and an outer portion, the inner portion providing good electrical contact with a mating contact element, and the outer portion providing a means for accepting a discharging electrical are without substantial damage to such outer portion.
- FIG. 1 is a top view of the connector in accordance with the present invention.
- FIG. 2 is a side view of the connector in accordance with the invention, in which a portion has been removed to show the internal structure.
- the embodiment shown is in the form of a tubular plug connector in which a pin of the type known as a. taper-pin can be inserted into the bottom receptacle 6 and a variety of known mating contact elements can be inserted into the connector from above, such known mating contacts being in the form of either a pin inserted through cylindrical passage 4 or in the form of a knife switch contact inserted into transverse slots 7.
- the arrangement of outer contact segments 2 define between segments one or more transverse slots 7.
- the slots 7 facilitate the introduction of a mating contact element in the form of a knife contact; yield by their resilient arrangement to accept mating contact elements of varying tolerances; and provide a means for temporary construction of a test circuit utilizing a plug which can be inserted in a transverse position into one of the transverse slots 7.
- the connector is shown as a tubular contact pin 1, which carries at its upper end (as shown in FIG. 2) two outer contact segments 2 arranged coaxially to the connector.
- the two outer contact segments 2 are similar in shape and disposed diametrically opposite one another at the top of the connector.
- a series of such symmetrically arranged outer contact segments could be utilized, the embodiment shown and described herein will be restricted to a single pair of outer contact segments 2 to simplify the description. Obviously, however, the construction of a connector need not be limited to only one pair of outer contact segments.
- the outer contact segments 2 consist of a material secure against the burning-off which occurs as a result of arcing to the material and permit, due to their resilient arrangement, good electrical connection with a mating contact element.
- the outer contact segments 2 are provided with a large inlet incline 3 which serves two purposes. Besides guiding the mating contact element into the cylindrical passageway 4, the inlet incline, being the closest portion of the connector to the mating contact element upon separation, provides the surface to which the electrical arc will discharge.
- outer segments 2 are of such a material that burning-off has substantially little effect, the fact that the are actually discharges to the surface of inlet incline 3 leaves cylindrical passage 4 free of any destruction, thereby providing a clean and wearproof contact course for the mating contact element.
- Inner contact spring 5 is disposed directly beneath and coaxial with the outer contact segments 2 and is in electrical contact therewith.
- Inner contact spring 5 is in the form of a tubular contact spring hav' ing an axially widenable sleeve-slot 8. Due to the coaxial placement of spring 5 with segments 2, a centering effect provided by the contact segments 2, permits the inner contact spring 5 to be of highly resilient material and yet be protected against bending by a mating contact element wrongly inserted. Since the outer segments provide the main support for the mating contact element, particular advantage is gained by utilization of the spring 5 with high specific contact pressure and automatic wiping action for cleaning of the contact surfaces. Such characteristics are highly desirable in connector construction and are not realizable in known connectors where support of the mating contact element is provided by the electrical contact itself.
- the primary object of this invention is obtained by the dual contact arrangement as described above.
- the inner contact spring 5, providing the low resistance electrical connection with a mating contact element, is protected against burning-off effects since, as the mating contact element is removed from connector 1, electrical contact is broken from contact spring 5 but is maintained with outer contact segments 2. While the particular material chosen for the construction of outer segments 2 is not of optimum electrical conductivity characteristics, nevertheless, sufficient conduction through outer segments 2 maintains current flow between the connector 1 and a mating contact element until the later-mentioned contact leaves the inlet incline 3 of connector 1.
- the electrical arc if any, will be received by the inlet incline 3 since this incline is the closest conductive portion of the connector 1 to a mating contact element thus removed.
- the arc taking the path of least resistance, will dissipate against the surface of inlet incline 3 where any damage, if any, will not impede either physical reinsertion of the mating contact element of electrical connection with inner contact spring 5.
- the contact spring 5 consists of a cylindrical spring with an axially extending widenable sleeve-slot 8.
- the spring 5 may also have circumferential slots 9 disposed at various axial positions thereon, so that the contact spring 5 has a number of spring arms 10 whose free ends lie in contact on the mating contact element.
- connection 6 for connecting the connector 1 to an electrical conductor.
- the plug connection in accordance with the invention permits the use of any desirable type of connecting means to an electrical conductor, it was found that for rough handling (for example as experienced by transporting on a railroad), a so-called taper-pin-connection is much more favorable than other forms of connection. If the need arises, however, the connection may also be made by a screw connection, crimping, soldering, or the like.
- an example of the material used in producing outer contact segments 2 is a material utilizing a tungsten alloy.
- the invention is not to be considered as limited to only tungsten alloys, however.
- An electrical connector for receiving a mating contact member comprising:
- said first contact element being a tubular contact spring
- said second contact element comprising a plurality of contact segments symmetrically disposed and in coaxial relationship with said contact spring
- said first contact element being disposed internally of said connector, and said second contact element being disposed on an external end of said connector,
- said second contact element being formed of a material having a high resistance to burning-off
- said first contact element being formed of a material of high electrical conductivity
- said second contact element has a cylindrical contact passageway leading inwardly of said connector, and an inwardly directed inlet inclined portion positioned at the outer extremity of said connector.
- the electrical connector as claimed in claim 1 including an electrical contact pin located on the end of said connector opposite said second contact element, said pin including a conical clamping receptacle for attachment to an electric conductor.
Landscapes
- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
Description
Claims (6)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US7790370A | 1970-10-05 | 1970-10-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3691511A true US3691511A (en) | 1972-09-12 |
Family
ID=22140698
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US77903A Expired - Lifetime US3691511A (en) | 1970-10-05 | 1970-10-05 | Plug connection contact with high security against burning off |
Country Status (1)
Country | Link |
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US (1) | US3691511A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1229609A1 (en) * | 2001-02-02 | 2002-08-07 | Autonetworks Technologies, Ltd. | ARC discharge suppressive connector |
EP1251531A2 (en) * | 2001-04-20 | 2002-10-23 | Yazaki Corporation | Circuit Breaking Apparatus |
US20230045653A1 (en) * | 2020-02-27 | 2023-02-09 | Maschinenfabrik Reinhausen Gmbh | Switch for an on-load tap changer and load transfer switch for an on-load tap changer |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US896210A (en) * | 1906-05-16 | 1908-08-18 | Westinghouse Electric & Mfg Co | Contact member. |
GB167932A (en) * | 1920-06-22 | 1921-08-25 | Hubert Jasper Scard Thomas | Improvements in electrical contacts of the plug-and-socket type |
US1477527A (en) * | 1923-04-03 | 1923-12-11 | Raettig Bruno | Contact spring |
DE592797C (en) * | 1934-02-15 | Hellux Akt Ges | Connector sleeve for massive connector pins consisting of a slotted tube | |
FR770170A (en) * | 1933-03-24 | 1934-09-10 | Fr Gardy Pour Contact Electr A | Electrical pin contact |
US2302849A (en) * | 1940-07-11 | 1942-11-24 | Bulldog Electric Prod Co | Switch |
US2765449A (en) * | 1953-01-31 | 1956-10-02 | Tuchel Ulrich | Electric coupling |
US3168366A (en) * | 1962-06-12 | 1965-02-02 | Amp Inc | Electrical connector assembly |
-
1970
- 1970-10-05 US US77903A patent/US3691511A/en not_active Expired - Lifetime
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE592797C (en) * | 1934-02-15 | Hellux Akt Ges | Connector sleeve for massive connector pins consisting of a slotted tube | |
US896210A (en) * | 1906-05-16 | 1908-08-18 | Westinghouse Electric & Mfg Co | Contact member. |
GB167932A (en) * | 1920-06-22 | 1921-08-25 | Hubert Jasper Scard Thomas | Improvements in electrical contacts of the plug-and-socket type |
US1477527A (en) * | 1923-04-03 | 1923-12-11 | Raettig Bruno | Contact spring |
FR770170A (en) * | 1933-03-24 | 1934-09-10 | Fr Gardy Pour Contact Electr A | Electrical pin contact |
US2302849A (en) * | 1940-07-11 | 1942-11-24 | Bulldog Electric Prod Co | Switch |
US2765449A (en) * | 1953-01-31 | 1956-10-02 | Tuchel Ulrich | Electric coupling |
US3168366A (en) * | 1962-06-12 | 1965-02-02 | Amp Inc | Electrical connector assembly |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1229609A1 (en) * | 2001-02-02 | 2002-08-07 | Autonetworks Technologies, Ltd. | ARC discharge suppressive connector |
US6537092B2 (en) | 2001-02-02 | 2003-03-25 | Autonetworks Technologies, Ltd | Arc discharge suppressive connector |
EP1251531A2 (en) * | 2001-04-20 | 2002-10-23 | Yazaki Corporation | Circuit Breaking Apparatus |
US20020153232A1 (en) * | 2001-04-20 | 2002-10-24 | Yazaki Corporation | Circuit breaking apparatus |
EP1251531A3 (en) * | 2001-04-20 | 2003-12-10 | Yazaki Corporation | Circuit Breaking Apparatus |
US6762376B2 (en) | 2001-04-20 | 2004-07-13 | Yazaki Corporation | Circuit breaking apparatus |
US20230045653A1 (en) * | 2020-02-27 | 2023-02-09 | Maschinenfabrik Reinhausen Gmbh | Switch for an on-load tap changer and load transfer switch for an on-load tap changer |
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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 |