US3262087A - Pin connector - Google Patents

Pin connector Download PDF

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US3262087A
US3262087A US362575A US36257564A US3262087A US 3262087 A US3262087 A US 3262087A US 362575 A US362575 A US 362575A US 36257564 A US36257564 A US 36257564A US 3262087 A US3262087 A US 3262087A
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portions
pin
sleeve portions
socket
spring portions
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Expired - Lifetime
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US362575A
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Mancini Lloyd
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Berg Electronics Inc
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Berg Electronics Inc
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    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/22—End pieces terminating in a spring clip
    • 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
    • H01R4/10—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/188—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping having an uneven wire-receiving surface to improve the contact
    • 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
    • H01R4/10—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/183—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section
    • H01R4/184—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion

Definitions

  • a principal object of the invention is to provide a new and improved connector for pin type terminals which can be made out of very thin metal stock and in miniature size.
  • FIGURE 1 is a plan View of a strip of terminals illustrating the several steps in the making of the same;
  • FIGURE 2 is a plan view of a single connector before it is crimped on the electrical conductor
  • FIGURE 3 is an enlarged side elevational view of a single connector
  • FIGURE 4 is an enlarged sectional view taken along the line 44 of FIGURE 3;
  • FIGURE 5 is an enlarged sectional view taken along the line 5-5 of FIGURE 3;
  • FIGURE 6 is an enlarged sectional view taken along the line 66 of FIGURE 2;
  • FIGURE 7 is a side elevational view of the connector assembled to a pin type terminal
  • FIGURE 8 is a sectional view taken along the line 88 of FIGURE 7;
  • FIGURE 9 is an enlarged sectional view taken along the line 99 of FIGURE 2.
  • an electrical connector embodying the invention is formed from an integral piece of thin sheet metal to provide a ferrule 20 for crimping onto an electrical conductor and an elongated socket 22 for telescopically receiving and yieldably holding a pin type terminal having fiat sides, such as a square pin 24.
  • the socket 22 comprises aligned spaced sleeve portions 26 and 28 interconnected by oppositely disposed longitudinally extending spring portions 30.
  • the sleeve portions 26 and 28 have an inner cross section matching that of the pin terminal 24 and the interior corners of the sleeve portions are relieved as at 32 so as to eliminate any interference between the interior corners of the sleeve portions 26 and 28 and the sharp corners of the pin 24.
  • the spring portions 30 are inwardly bowed intermediate their ends so as to provide single curvature contact surfaces presented toward the axis of the socket and more closely spaced than the corresponding inner surfaces of the sleeve portions for engagement with the flat sides of the pin terminal.
  • the spring portions 30 are substantially more flexible than the sleeve portions 26 and 28, and the contact surface areas 34 of the spring por- 3,262,087 Patented July 19, I966 ice tions 30 are coined.
  • the coining reduces the thickness of the metal at the contact surface areas, improves the spring characteristics thereof, and provides a desirable contact surface for engagement with the fiat side of the pin 24.
  • the coining widens the spring portions 30 at the middle as illustrated in FIGURE 3 and, as illustrated in FIGURE 9, results in ridges 40 which provide guides along the side edges of the spring portions for guiding the pin terminal during insertion.
  • the interior cross section of the sleeve portions 26 and 28 is made slightly larger than the cross section of the pin 24 so that there is no interference between the pin and the sleeve portions 26 and 28, although there is a close fit.
  • the spacing between the bowed center portions 34 of the spring portions 30 is less than the minimum cross section of the pin 24 so as to provide a frictional fit between the contact areas 34 and the sides of the pin 24. Since the spring portions 30 are relatively flexible, they will provide area contact with the sides of the pin 24 even though the spring portions are bowed.
  • the wire crimping ferrule 20 may be made of any conventional construction and is adapted to be crimped around the bared end of a wire so as to integrate the connector with an electrical conductor.
  • the flexibility of the spring portions 30 assures that the contact surface areas 34 will seat on the flat sides of the pin 24.
  • the insertion of the pin into the socket of the connector of course will tend to open up or spread the contact surface areas 34.
  • this will tend to elongate the socket rather than tend to unwrap or open up the sleeve portions 26 and 28.
  • the connectors may be made in strip form from metal strip stock, such as A hard Phosphor bronze, or any other material suitable for making electrical connectors, and the stock may be plated with a suitable plating, such as tin or gold.
  • the strip is subjected to a series of blanking and forming operations so as to provide a ferrule portion 20, a connector portion 22, and a locating portion 50.
  • the ferrule portion 20 is bent into U-form as is convention, for crimping around the hated end of the wire, and the connector portion 22 is folded or bent as to provide the sleeve portions 26 and 28 having interior cross sections which are substantially square.
  • the portions which form the spring portions 30 are coined to provide the contact areas 34 and ridges 40 previously referred to.
  • this type of constuction lends itself to being made in a size for use with a pin terminal having a cross section of .025 inch, and in such case the interior cross section of the sleeve portions 26 and 28 preferably is .027 inch.
  • the strip stock used for making such connector was .010 A hard Phosphor bronze with a gold over nickel plating.
  • An electrical connector formed from an integral piece of thin sheet metal to provide a ferrule for crimping onto an electrical conductor and an elongated socket for telescopically receiving and yieldably holding an essentially square pin terminal
  • said socket comprising aligned spaced square sleeve portions solely interconnected by oppositely disposed and longitudinally extending spring portions extending between corresponding aligned sides of said sleeve portions, said sleeve portions having an inner cross section matching that of the pin terminal, said spring portions being inwardly bowed toward each other intermediate their ends so as to provide single curvature contact surfaces presented toward the axis of the socket and more closely spaced than the corresponding inner surfaces of said sleeve portions for engagement with the flat sides of the pin terminal, said contact surfaces having a width greater than that of said pin, said spring portions being more flexible than said sleeve portions whereby insertion of the pin in the socket flexes said spring portions apart so as to move said sleeve portions apart longitudinally.

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  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Description

INVENTOR.
United States Patent 3,262,087 PIN CONNECTOR Lloyd Mancini, Hershey, Pa., assignor to Berg Electronics, Inc., New Cumberland, Pa., a corporation of Pennsylvania Filed Apr. 27, 1964, Ser. No. 362,575 2 Claims. (Cl. 339-256) This invention relates to electrical connectors, particularly those of very small size for pin type terminals. Conventional connectors may be and have been made in small sizes, but as the size is reduced the connector becomes less satisfactory. The present invention provides a construction which is especially suitable for miniature connectors in that it combines desirable performance and quality characteristics with low cost.
A principal object of the invention is to provide a new and improved connector for pin type terminals which can be made out of very thin metal stock and in miniature size.
Other and further objects of the invention will be apparent from the following description and claims and may be understood by reference to the accompanying drawings which by way of illustration show a preferred embodiment of the invention and what I now consider to be the best mode of applying the principles thereof. Other embodiments of the invention may be used without departing from the scope of the present invention as set forth in the appended claims.
In the drawings:
FIGURE 1 is a plan View of a strip of terminals illustrating the several steps in the making of the same;
FIGURE 2 is a plan view of a single connector before it is crimped on the electrical conductor;
FIGURE 3 is an enlarged side elevational view of a single connector;
FIGURE 4 is an enlarged sectional view taken along the line 44 of FIGURE 3;
FIGURE 5 is an enlarged sectional view taken along the line 5-5 of FIGURE 3;
FIGURE 6 is an enlarged sectional view taken along the line 66 of FIGURE 2;
FIGURE 7 is a side elevational view of the connector assembled to a pin type terminal;
FIGURE 8 is a sectional view taken along the line 88 of FIGURE 7; and
FIGURE 9 is an enlarged sectional view taken along the line 99 of FIGURE 2.
As illustrated in FIGURES 2 and 3, an electrical connector embodying the invention is formed from an integral piece of thin sheet metal to provide a ferrule 20 for crimping onto an electrical conductor and an elongated socket 22 for telescopically receiving and yieldably holding a pin type terminal having fiat sides, such as a square pin 24. The socket 22 comprises aligned spaced sleeve portions 26 and 28 interconnected by oppositely disposed longitudinally extending spring portions 30. As illustrated in FIGURES 4 and 8, the sleeve portions 26 and 28 have an inner cross section matching that of the pin terminal 24 and the interior corners of the sleeve portions are relieved as at 32 so as to eliminate any interference between the interior corners of the sleeve portions 26 and 28 and the sharp corners of the pin 24.
The spring portions 30 are inwardly bowed intermediate their ends so as to provide single curvature contact surfaces presented toward the axis of the socket and more closely spaced than the corresponding inner surfaces of the sleeve portions for engagement with the flat sides of the pin terminal. The spring portions 30 are substantially more flexible than the sleeve portions 26 and 28, and the contact surface areas 34 of the spring por- 3,262,087 Patented July 19, I966 ice tions 30 are coined. The coining reduces the thickness of the metal at the contact surface areas, improves the spring characteristics thereof, and provides a desirable contact surface for engagement with the fiat side of the pin 24. The coining widens the spring portions 30 at the middle as illustrated in FIGURE 3 and, as illustrated in FIGURE 9, results in ridges 40 which provide guides along the side edges of the spring portions for guiding the pin terminal during insertion.
The interior cross section of the sleeve portions 26 and 28 is made slightly larger than the cross section of the pin 24 so that there is no interference between the pin and the sleeve portions 26 and 28, although there is a close fit. The spacing between the bowed center portions 34 of the spring portions 30 is less than the minimum cross section of the pin 24 so as to provide a frictional fit between the contact areas 34 and the sides of the pin 24. Since the spring portions 30 are relatively flexible, they will provide area contact with the sides of the pin 24 even though the spring portions are bowed.
The wire crimping ferrule 20 may be made of any conventional construction and is adapted to be crimped around the bared end of a wire so as to integrate the connector with an electrical conductor. The flexibility of the spring portions 30 assures that the contact surface areas 34 will seat on the flat sides of the pin 24. The insertion of the pin into the socket of the connector of course will tend to open up or spread the contact surface areas 34. However, due to the type of construction used, this will tend to elongate the socket rather than tend to unwrap or open up the sleeve portions 26 and 28.
The connectors may be made in strip form from metal strip stock, such as A hard Phosphor bronze, or any other material suitable for making electrical connectors, and the stock may be plated with a suitable plating, such as tin or gold. In making the connectors of strip stock, the strip is subjected to a series of blanking and forming operations so as to provide a ferrule portion 20, a connector portion 22, and a locating portion 50. The ferrule portion 20 is bent into U-form as is convention, for crimping around the hated end of the wire, and the connector portion 22 is folded or bent as to provide the sleeve portions 26 and 28 having interior cross sections which are substantially square. However, before the connector portion 22 is folded to form the finished connector, the portions which form the spring portions 30 are coined to provide the contact areas 34 and ridges 40 previously referred to. By way of example, I have found that this type of constuction lends itself to being made in a size for use with a pin terminal having a cross section of .025 inch, and in such case the interior cross section of the sleeve portions 26 and 28 preferably is .027 inch. The strip stock used for making such connector was .010 A hard Phosphor bronze with a gold over nickel plating.
While I have illustrated and described a preferred embodiment of my invention, it is understood that this is capable of modification and I therefore do not wish to be limited to the precise details set forth but desire to avail mystelf of such changes and alterations as fall Within the purview of the following claims.
I claim:
1. An electrical connector formed from an integral piece of thin sheet metal to provide a ferrule for crimping onto an electrical conductor and an elongated socket for telescopically receiving and yieldably holding an essentially square pin terminal, said socket comprising aligned spaced square sleeve portions solely interconnected by oppositely disposed and longitudinally extending spring portions extending between corresponding aligned sides of said sleeve portions, said sleeve portions having an inner cross section matching that of the pin terminal, said spring portions being inwardly bowed toward each other intermediate their ends so as to provide single curvature contact surfaces presented toward the axis of the socket and more closely spaced than the corresponding inner surfaces of said sleeve portions for engagement with the flat sides of the pin terminal, said contact surfaces having a width greater than that of said pin, said spring portions being more flexible than said sleeve portions whereby insertion of the pin in the socket flexes said spring portions apart so as to move said sleeve portions apart longitudinally.
2. A connector according to claim 1 wherein the contact surface areas of said spring portions are coined, are
more flexible than the ends of said spring portions, and 15 are provided with inwardly extending guide ridges along 4 the side edges of said spring portions for guiding the pin terminal during insertion between said spring portions.
References Cited by the Examiner UNITED STATEQ PATENTS PATRICK A. CLIFFORD, Primary Examiner.
P. TEITELBAUM, Assistant Examiner.

Claims (1)

1. AN ELCTRICAL CONNECTOR FORMED FROM AN INTEGRAL PIECE OF THIN SHEET METAL TO PROVIDE A FERRULE FOR CRIMPING ONTO AN ELECTRICAL CONDUCTOR AND A ELONGATED SOCKET FOR TELESCOPICALLY RECEIVING AND YIELDABLY HOLDING AN ESSENTIALLY SQUARE PIN TERMINAL SAID SOCKET COMPRISING ALIGNED SPACED SQUARE SLEEVE PORTIONS SOLELY INTERCONNECTED BY OPPOSITELY DISPOSED AND LONGITUDINALLY EXTENDING SPRING PORTIONS EXTENDING BETWEEN CORRESPONDING ALIGNED SIDES OF SAID SLEEVE PORTIONS, SAID SLEEVE PORTIONS HAVING AN INNER CROSS SECTION MATCHING THAT OF THE PIN TERMINAL, SAID SPRING PORTIONS BEING INWARDLY BOWED TOWARD EACH OTHER INTERMEDIATE THEIR ENDS SO AS TO PROVIDE SINGLE CURVATURE CONTACT SURFACES PRESENTED TOWARD THE AXIS OF THE SOCKET AND MORE CLOSELY SPACED THAN THE CORRESPONDING INNER SURFACES OF SAID SLEEVE PORTIONS FOR ENGAGEMENT WITH THE FLAT SIDES OF THE PIN TERMINAL, SAID CONTACT SURFACES HAVING A WIDTH GREATER THAN THAT OF SAID PIN, SAID SPRING PORTIONS BEING MORE FLEXIBLE THAN SAID SLEEVE PORTIONS WHEREBY INSERTION OF THE PIN IN THE SOCKET FLEXES SAID SPRING PORTIONS APART SO AS TO MOVE SAID SLEEVE PORTIONS APART LONGITUDINALLY.
US362575A 1964-04-27 1964-04-27 Pin connector Expired - Lifetime US3262087A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3362008A (en) * 1966-01-19 1968-01-02 Berg Electronics Inc Pin connector
US3404370A (en) * 1966-08-04 1968-10-01 Sigma Engineering Service Inc Cap and lead construction for electrical components
US3425030A (en) * 1967-05-26 1969-01-28 Amp Inc Electrical connector having constrained spring means
US3546663A (en) * 1968-12-19 1970-12-08 Centre William Holmberg Jr Connector assembly and tool
FR2579836A1 (en) * 1985-03-27 1986-10-03 Telemecanique Electrique ELECTRICAL CONDUCTOR TIP AND METHOD OF MANUFACTURING THE SAME
US5082462A (en) * 1988-12-08 1992-01-21 E. I. Du Pont De Nemours And Company Ribbed terminal having pin lead-in portion thereon
EP2159880A1 (en) 2008-08-28 2010-03-03 Sumitomo Wiring Systems, Ltd. A terminal fitting and a wire connected with a terminal fitting

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2125816A (en) * 1935-05-25 1938-08-02 Albert & J M Anderson Mfg Co Contact member for electrical connections
US2554813A (en) * 1944-10-20 1951-05-29 Aircraft Marine Prod Inc Swaged electrical connection
US2600190A (en) * 1950-05-08 1952-06-10 Hugh W Batcheller Electric connector female member
US2701350A (en) * 1952-10-18 1955-02-01 Soreng Products Corp Separable electrical connector
US2774951A (en) * 1954-12-16 1956-12-18 Aircraft Marine Prod Inc Terminal clip
US3047832A (en) * 1959-09-11 1962-07-31 Sealectro Corp Electrical socket contacts
US3192498A (en) * 1962-05-17 1965-06-29 Elco Corp Contact adapted to receive pin or plate

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2125816A (en) * 1935-05-25 1938-08-02 Albert & J M Anderson Mfg Co Contact member for electrical connections
US2554813A (en) * 1944-10-20 1951-05-29 Aircraft Marine Prod Inc Swaged electrical connection
US2600190A (en) * 1950-05-08 1952-06-10 Hugh W Batcheller Electric connector female member
US2701350A (en) * 1952-10-18 1955-02-01 Soreng Products Corp Separable electrical connector
US2774951A (en) * 1954-12-16 1956-12-18 Aircraft Marine Prod Inc Terminal clip
US3047832A (en) * 1959-09-11 1962-07-31 Sealectro Corp Electrical socket contacts
US3192498A (en) * 1962-05-17 1965-06-29 Elco Corp Contact adapted to receive pin or plate

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3362008A (en) * 1966-01-19 1968-01-02 Berg Electronics Inc Pin connector
US3404370A (en) * 1966-08-04 1968-10-01 Sigma Engineering Service Inc Cap and lead construction for electrical components
US3425030A (en) * 1967-05-26 1969-01-28 Amp Inc Electrical connector having constrained spring means
US3546663A (en) * 1968-12-19 1970-12-08 Centre William Holmberg Jr Connector assembly and tool
FR2579836A1 (en) * 1985-03-27 1986-10-03 Telemecanique Electrique ELECTRICAL CONDUCTOR TIP AND METHOD OF MANUFACTURING THE SAME
US5082462A (en) * 1988-12-08 1992-01-21 E. I. Du Pont De Nemours And Company Ribbed terminal having pin lead-in portion thereon
EP2159880A1 (en) 2008-08-28 2010-03-03 Sumitomo Wiring Systems, Ltd. A terminal fitting and a wire connected with a terminal fitting
US20100055998A1 (en) * 2008-08-28 2010-03-04 Sumitomo Wiring Systems, Ltd. Terminal fitting and a wire connected with a terminal fitting

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