EP1420479A1 - Plug connection device - Google Patents

Plug connection device Download PDF

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Publication number
EP1420479A1
EP1420479A1 EP03024879A EP03024879A EP1420479A1 EP 1420479 A1 EP1420479 A1 EP 1420479A1 EP 03024879 A EP03024879 A EP 03024879A EP 03024879 A EP03024879 A EP 03024879A EP 1420479 A1 EP1420479 A1 EP 1420479A1
Authority
EP
European Patent Office
Prior art keywords
receiving element
grooves
contact pin
connection device
plug connection
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.)
Granted
Application number
EP03024879A
Other languages
German (de)
French (fr)
Other versions
EP1420479B1 (en
Inventor
Martin Bleicher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TE Connectivity Germany GmbH
Original Assignee
Tyco Electronics AMP GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tyco Electronics AMP GmbH filed Critical Tyco Electronics AMP GmbH
Priority to EP20030024879 priority Critical patent/EP1420479B1/en
Publication of EP1420479A1 publication Critical patent/EP1420479A1/en
Application granted granted Critical
Publication of EP1420479B1 publication Critical patent/EP1420479B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/55—Fixed connections for rigid printed circuits or like structures characterised by the terminals
    • H01R12/58—Fixed connections for rigid printed circuits or like structures characterised by the terminals terminals for insertion into holes
    • H01R12/585—Terminals having a press fit or a compliant portion and a shank passing through a hole in the printed circuit board
    • 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
    • H01R13/04—Pins or blades for co-operation with sockets

Definitions

  • the invention relates to a plug connection device and, more particularly, to a plug connection device that includes a receiving element with at least one opening for receiving a contact pin wherein a surface of the contact pin is connected to an inner surface of the receiving element.
  • Conventional plug connection devices are used in the production of electronic components and comprise a receiving element having a housing with at least one opening for receiving a contact pin. When mated, a surface of the contact pin is connected, at least in certain sections, to an inner surface of the receiving element.
  • the housing is typically an insulative plastic housing, such as, a header, and the contact pin is conductive and typically made from, for example, a drawn wire.
  • the housing and/or the contact pin have machining marks that extend substantially in a longitudinal direction, i.e., parallel to a mating direction, that are formed during production. Because of the method of production of the contact pin and the housing, when the drawn wire is mated with the plastic housing, shavings are formed. The shavings are only a few hundredths of a millimeter thick, however, the shavings can attain a length that is sufficient to bridge adjacent contact pins positioned in the housing, which may result in a short circuit.
  • a plug connection device comprising a contact pin and a receiving element.
  • the contact pin has an outer surface.
  • the receiving element has openings. Each of the openings has an inner surface that contacts the outer surface of the contact pin when the contact pin is received therein.
  • the plug connection device has grooves extending in a radial direction. A distance between adjacent grooves is smaller than a distance between adjacent openings.
  • contact pins for a plug connection device wherein each of the contact pins has an outer surface with contact pin grooves extending in a radial direction. A distance between adjacent contact pin grooves is smaller than a distance between adjacent contact pins.
  • a receiving element for a plug connection device comprising openings with an inner surface.
  • the inner surface has receiving element grooves extending in a radial direction. A distance between adjacent grooves is smaller than a distance between adjacent openings.
  • Fig. 1 shows a first embodiment of a contact pin 1 of a plug connection device according to the invention.
  • the contact pin 1 may be, for example, a terminal of an electrical component.
  • the contact pin 1 is made from an electrically conductive material, such as, for example, tin, and has machining marks 2 and contact pin grooves 4 formed on a outer surface 3 thereof.
  • the machining marks 2 are formed in a longitudinal direction, which corresponds to a mating direction.
  • the machining marks 2 are formed during production of the contact pin 1.
  • the contact pin 1 may be formed, for example, from drawn metal wire that may be cut to length for cost efficiency.
  • the contact pin 1 is elongated in shape and circular in cross-section for ease of mating with a receiving element 5, shown in Fig. 4.
  • the contact pin 1 may be square or oval-shaped.
  • the machining marks 2 are removed in a region of the contact pin grooves 4, in order to reduce shaving formation. Because the contact pin 1 is formed from a metal, such as, tin, etc., production of the contact pin 1 is cost-efficient and good electrical conductivity is ensured.
  • the contact pin grooves 4 are formed after cutting the pin contact 1 to length, for example, by engraving or rolling, and are formed to extend transversely to the mating direction.
  • the contact pin grooves 4 extend further in a radial direction than in the longitudinal direction.
  • the contact pin grooves 4 are formed to be larger than any surface unevenness (not shown) of the contact pin 1 to reduce shaving formation.
  • the contact pin grooves 4 are set apart from one another and extend parallel to one another and encircle the contact pin 1 to further reduce shaving formation.
  • the distance of the contact pin groove 4 from the end sections of the contact pin 1, and the distance between adjacent contact pin grooves 4, should be shorter than the distance between adjacent openings 6 of the receiving element 5, to be discussed later.
  • Fig. 2 shows a second embodiment of the contact pin 1 according to the invention.
  • the second embodiment differs from the first embodiment in that the contact pin grooves 4 of the second embodiment have an angular form and are inclined with respect to the longitudinal direction of the contact pin 1 to reduce shaving formation.
  • the contact pin grooves 4 may be inclined by, for example, 45 degrees to further reduce shaving formation.
  • Fig. 3 shows a third embodiment of the contact pin 1 according to the invention.
  • the third embodiment differs from the first and second embodiments in that the contact pin grooves 4 of the third embodiment have a teardrop shape and are mutually offset relative to each other. This configuration reduces shaving formation.
  • Fig. 4 shows the receiving element 5 of a plug connection device according to the invention.
  • the receiving element 5 may be, for example, a circuit board.
  • the receiving element 5 is made from a non-conductive material, such as, plastic or other polymer, to protect against short circuits and to ensure that production is cost-efficient.
  • the receiving element 5 has an opening 6 corresponding to a shape of the contact pin 1 to facilitate insertion therein.
  • the opening 6 may be, for example, a conventional circular opening or an oval or polygonal opening.
  • the opening 6 has a diameter slightly larger than a diameter of the contact pin 1.
  • On an inner surface 8 of the receiving element 5 and extending in a longitudinal direction are machining marks 7.
  • the machining marks 7 correspond to a mating direction and are produced when the opening 6 is formed in the receiving element 5.
  • the opening 6 may be produced, for example, by punching. Although only one of the openings 6 is shown in Fig. 4, the receiving element 5 may have a plurality of openings 6, set apart from one another. One of the contact pins 1 is associated with each of the openings 6.
  • the receiving element 5 has receiving element grooves 9 extending in a radial direction.
  • the receiving element grooves 9 extend transversely to the mating direction. Similar to the contact pin 1, the machining marks 7 on the receiving element 5 are removed in a region of the receiving element grooves 9.
  • Each of the receiving element grooves 9 is larger than any surface unevenness (not shown) of the receiving element 5 to reduce shaving formation, and the receiving element grooves 9 extend further in the radial direction than in the longitudinal direction to further reduce shaving formation.
  • the receiving element grooves 9 encircle the receiving element 5, and a plurality of the receiving element grooves 9 are set apart from one another and extend parallel to one another.
  • the distance of the receiving element groove 9 from an end section of the receiving element 5, and the distance between adjacent receiving element grooves 9, should be shorter than the distance between adjacent openings 6 of the receiving element 5, in order to effectively prevent short circuits.
  • the grooves may be inclined, in certain sections, by, for example, 45 degrees with respect to the longitudinal direction of the receiving element 5.
  • the receiving element grooves 9 may also have an angular form or a tear-dropped shape.
  • the contact pin 1 is plugged into the opening 6 of the receiving element 5.
  • the outer surface 3 of the contact pin 1 is connected, at least in certain sections, to the inner surface 8 of the receiving element 5.
  • the contact pin 1 protrudes partially beyond the receiving element 5. Because the surface of the contact pin 1 and/or the inner surface 8 of the receiving element 5 comprises at least one of the contact pin grooves 4 or the receiving element grooves 9 that extends in a radial direction, shaving formation is effectively reduced. If a shaving is produced, the shaving will break in a region of one of the contact pin grooves 4, 9. Because the length of the shaving is controlled, the shaving will remain shorter than the distance between adjacent openings 6. Bridging of neighboring contact pins 1 by the shavings is thereby avoided, reducing the occurrence of short circuits.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Multi-Conductor Connections (AREA)

Abstract

A plug connection device comprises a contact pin (1) and a receiving element (5). The contact pin (1) has an outer surface (3). The receiving element (5) has openings (6). Each of the openings (6) has an inner surface (8) that contacts the outer surface (3) of the contact pin (1) when the contact pin (1) is received therein. The plug connection device has grooves (4, 9) extending in a radial direction. A distance between adjacent grooves (4, 9) is smaller than a distance between adjacent openings (6).

Description

  • The invention relates to a plug connection device and, more particularly, to a plug connection device that includes a receiving element with at least one opening for receiving a contact pin wherein a surface of the contact pin is connected to an inner surface of the receiving element.
  • Conventional plug connection devices are used in the production of electronic components and comprise a receiving element having a housing with at least one opening for receiving a contact pin. When mated, a surface of the contact pin is connected, at least in certain sections, to an inner surface of the receiving element. The housing is typically an insulative plastic housing, such as, a header, and the contact pin is conductive and typically made from, for example, a drawn wire. The housing and/or the contact pin have machining marks that extend substantially in a longitudinal direction, i.e., parallel to a mating direction, that are formed during production. Because of the method of production of the contact pin and the housing, when the drawn wire is mated with the plastic housing, shavings are formed. The shavings are only a few hundredths of a millimeter thick, however, the shavings can attain a length that is sufficient to bridge adjacent contact pins positioned in the housing, which may result in a short circuit.
  • It is, therefore, an object of the invention to provide a plug connection device that prevents the occurrence of short circuits between adjacent contact pins.
  • This and other objects are achieved by a plug connection device comprising a contact pin and a receiving element. The contact pin has an outer surface. The receiving element has openings. Each of the openings has an inner surface that contacts the outer surface of the contact pin when the contact pin is received therein. The plug connection device has grooves extending in a radial direction. A distance between adjacent grooves is smaller than a distance between adjacent openings.
  • This and other objects are further achieved by contact pins for a plug connection device wherein each of the contact pins has an outer surface with contact pin grooves extending in a radial direction. A distance between adjacent contact pin grooves is smaller than a distance between adjacent contact pins.
  • This and other objects are still further achieved by a receiving element for a plug connection device comprising openings with an inner surface. The inner surface has receiving element grooves extending in a radial direction. A distance between adjacent grooves is smaller than a distance between adjacent openings.
  • The invention will now be described in greater detail with reference to the following figures, in which:
  • Fig. 1 is a plan view of a first embodiment of a contact pin;
  • Fig. 2 is a plan view of a second embodiment of the contact pin;
  • Fig. 3 is a plan view of a third embodiment of the contact pin; and
  • Fig. 4 is a sectional view of a receiving element.
  • Fig. 1 shows a first embodiment of a contact pin 1 of a plug connection device according to the invention. The contact pin 1 may be, for example, a terminal of an electrical component. The contact pin 1 is made from an electrically conductive material, such as, for example, tin, and has machining marks 2 and contact pin grooves 4 formed on a outer surface 3 thereof. For sake of clarity, the contact pin grooves 4 and the machining marks 2 shown in the figures have been exaggerated. The machining marks 2 are formed in a longitudinal direction, which corresponds to a mating direction. The machining marks 2 are formed during production of the contact pin 1. The contact pin 1 may be formed, for example, from drawn metal wire that may be cut to length for cost efficiency. In the illustrated embodiment, the contact pin 1 is elongated in shape and circular in cross-section for ease of mating with a receiving element 5, shown in Fig. 4. Other embodiments of the contact pin 1, however, are possible. For example, the contact pin 1 may be square or oval-shaped. The machining marks 2 are removed in a region of the contact pin grooves 4, in order to reduce shaving formation. Because the contact pin 1 is formed from a metal, such as, tin, etc., production of the contact pin 1 is cost-efficient and good electrical conductivity is ensured.
  • The contact pin grooves 4 are formed after cutting the pin contact 1 to length, for example, by engraving or rolling, and are formed to extend transversely to the mating direction. The contact pin grooves 4 extend further in a radial direction than in the longitudinal direction. The contact pin grooves 4 are formed to be larger than any surface unevenness (not shown) of the contact pin 1 to reduce shaving formation. The contact pin grooves 4 are set apart from one another and extend parallel to one another and encircle the contact pin 1 to further reduce shaving formation. The distance of the contact pin groove 4 from the end sections of the contact pin 1, and the distance between adjacent contact pin grooves 4, should be shorter than the distance between adjacent openings 6 of the receiving element 5, to be discussed later.
  • Fig. 2 shows a second embodiment of the contact pin 1 according to the invention. For ease of description, components identical to the first embodiment will not be further described herein, and identical components are designated with identical reference numerals. As shown in Fig. 2, the second embodiment differs from the first embodiment in that the contact pin grooves 4 of the second embodiment have an angular form and are inclined with respect to the longitudinal direction of the contact pin 1 to reduce shaving formation. The contact pin grooves 4 may be inclined by, for example, 45 degrees to further reduce shaving formation.
  • Fig. 3 shows a third embodiment of the contact pin 1 according to the invention. For ease of description, components identical to the first and second embodiments will not be further described herein, and identical components are designated with identical reference numerals. As shown in Fig. 3, the third embodiment differs from the first and second embodiments in that the contact pin grooves 4 of the third embodiment have a teardrop shape and are mutually offset relative to each other. This configuration reduces shaving formation.
  • Fig. 4 shows the receiving element 5 of a plug connection device according to the invention. The receiving element 5 may be, for example, a circuit board. The receiving element 5 is made from a non-conductive material, such as, plastic or other polymer, to protect against short circuits and to ensure that production is cost-efficient. The receiving element 5 has an opening 6 corresponding to a shape of the contact pin 1 to facilitate insertion therein. The opening 6 may be, for example, a conventional circular opening or an oval or polygonal opening. The opening 6 has a diameter slightly larger than a diameter of the contact pin 1. On an inner surface 8 of the receiving element 5 and extending in a longitudinal direction are machining marks 7. The machining marks 7 correspond to a mating direction and are produced when the opening 6 is formed in the receiving element 5. The opening 6 may be produced, for example, by punching. Although only one of the openings 6 is shown in Fig. 4, the receiving element 5 may have a plurality of openings 6, set apart from one another. One of the contact pins 1 is associated with each of the openings 6.
  • As shown in Fig. 4, the receiving element 5 has receiving element grooves 9 extending in a radial direction. For sake of clarity, the receiving element grooves 9 and the machining marks 7 have been exaggerated. The receiving element grooves 9 extend transversely to the mating direction. Similar to the contact pin 1, the machining marks 7 on the receiving element 5 are removed in a region of the receiving element grooves 9. Each of the receiving element grooves 9 is larger than any surface unevenness (not shown) of the receiving element 5 to reduce shaving formation, and the receiving element grooves 9 extend further in the radial direction than in the longitudinal direction to further reduce shaving formation. The receiving element grooves 9 encircle the receiving element 5, and a plurality of the receiving element grooves 9 are set apart from one another and extend parallel to one another. The distance of the receiving element groove 9 from an end section of the receiving element 5, and the distance between adjacent receiving element grooves 9, should be shorter than the distance between adjacent openings 6 of the receiving element 5, in order to effectively prevent short circuits. Similar to the contact pin 1, the grooves may be inclined, in certain sections, by, for example, 45 degrees with respect to the longitudinal direction of the receiving element 5. The receiving element grooves 9 may also have an angular form or a tear-dropped shape.
  • Assembly and operation of the plug connection device will now be described in greater detail. The contact pin 1 is plugged into the opening 6 of the receiving element 5. In the plugged-in state, the outer surface 3 of the contact pin 1 is connected, at least in certain sections, to the inner surface 8 of the receiving element 5. The contact pin 1 protrudes partially beyond the receiving element 5. Because the surface of the contact pin 1 and/or the inner surface 8 of the receiving element 5 comprises at least one of the contact pin grooves 4 or the receiving element grooves 9 that extends in a radial direction, shaving formation is effectively reduced. If a shaving is produced, the shaving will break in a region of one of the contact pin grooves 4, 9. Because the length of the shaving is controlled, the shaving will remain shorter than the distance between adjacent openings 6. Bridging of neighboring contact pins 1 by the shavings is thereby avoided, reducing the occurrence of short circuits.

Claims (25)

  1. A plug connection device comprising a contact pin (1) having an outer surface (3), a receiving element (5) having openings (6), each of the openings (6) having an inner surface (8) that contacts the outer surface (3) of the contact pin (1) when the contact pin (1) is received therein, characterized in that:
    the plug connection device has grooves (4, 9) extending in a radial direction, wherein a distance between adjacent grooves (4, 9) is smaller than a distance between adjacent openings (6).
  2. The plug connection device according to claim 1, characterized in that the receiving element (5) is made from a non-conductive material and the contact pin (1) is made from a conductive material.
  3. The plug connection device according to claim 1 or 2, characterized in that the grooves (4, 9) extend transversely to a mating direction of the contact pin (1).
  4. The plug connection device according to any of claims 1-3, characterized in that machining marks (2, 7) are removed in an area of the grooves (4, 9).
  5. The plug connection device according to any of claims 1-4, characterized in that the grooves (4, 9) extend further in a radial direction than in a longitudinal direction.
  6. The plug connection device according to any of claims 1-5, characterized in that the grooves (4, 9) are inclined with respect to a longitudinal direction.
  7. The plug connection device according to claim 6, characterized in that the grooves (4, 9) are inclined by about 45 degrees.
  8. The plug connection device according to any of claims 1-5, characterized in that the grooves (4, 9) have a teardrop shape.
  9. The plug connection device according to any of claims 1-8, characterized in that the grooves (4, 9) are formed on the inner surface (8) of the openings (6) of the receiving element (5) and the outer surface (3) of the contact pins (1).
  10. Contact pins (1) for a plug connection device, each of the contact pins (1) comprising an outer surface (3), characterized in that:
    the outer surface (3) has contact pin grooves (4) extending in a radial direction wherein a distance between adjacent contact pin grooves (4) is smaller than a distance between adjacent contact pins (1).
  11. The contact pins (1) according to claim 10, characterized in that the contact pin grooves (4) extend transversely to a mating direction of a receiving element (5).
  12. The contact pins (1) according to claim 10 or 11, characterized in that machining marks (2) are removed in an area of the contact pin grooves (4).
  13. The contact pins (1) according to any of claims 10-12, characterized in that the contact pins (1) are formed from a drawn metal wire.
  14. The contact pins (1) according to any of claims 10-13, characterized in that the contact pin grooves (4) are inclined with respect to a longitudinal direction of the contact pin (1).
  15. The contact pins (1) according to claim 14, characterized in that the contact pin grooves (4) are inclined by about 45 degrees.
  16. The contact pins (1) according to any of claims 10-13, characterized in that the contact pin grooves (4) have a teardrop shape.
  17. The contact pins (1) according to any of claims 10-16, characterized in that the contact pin grooves (4) extend further in a radial direction than in a longitudinal direction.
  18. A receiving element (5) for a plug connection device, the receiving element (5) comprising openings (6) with an inner surface (8), characterized in that:
    the inner surface (8) has receiving element grooves (9) extending in a radial direction, wherein a distance between adjacent receiving element grooves (9) is smaller than a distance between adjacent openings (6).
  19. The receiving element (5) according to claim 18, characterized in that the receiving element (5) is made from a non-conductive material.
  20. The receiving element (5) according to claim 18 or 19, characterized in that the receiving element grooves (9) extend transversely to a fitting direction of a contact pin (1).
  21. The receiving element (5) according to any of claims 18-20, characterized in that machining marks (7) are removed in an area of the receiving element grooves (9).
  22. The receiving element (5) according to any of claims 18-21, characterized in that the receiving element grooves (9) extend further in a radial direction than in a longitudinal direction.
  23. The receiving element (5) according to any of claims 18-22, characterized in that the receiving element grooves (9) are inclined with respect to a longitudinal direction of the opening (6).
  24. The receiving element (5) according to claim 23, characterized in that the receiving element grooves (9) are inclined by about 45 degrees.
  25. The receiving element (5) according to any of claims 18-22, characterized in that the receiving element grooves (9) have a teardrop shape.
EP20030024879 2002-11-13 2003-10-31 Plug connection device Expired - Lifetime EP1420479B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20030024879 EP1420479B1 (en) 2002-11-13 2003-10-31 Plug connection device

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP02025528 2002-11-13
EP02025528 2002-11-13
EP20030024879 EP1420479B1 (en) 2002-11-13 2003-10-31 Plug connection device

Publications (2)

Publication Number Publication Date
EP1420479A1 true EP1420479A1 (en) 2004-05-19
EP1420479B1 EP1420479B1 (en) 2011-12-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030024879 Expired - Lifetime EP1420479B1 (en) 2002-11-13 2003-10-31 Plug connection device

Country Status (1)

Country Link
EP (1) EP1420479B1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1060271A (en) * 1964-01-06 1967-03-01 Oxley Robert Frederick Improvements in and relating to connecting devices for printed circuit boards
EP0488487A1 (en) * 1990-11-29 1992-06-03 THOMAS & BETTS CORPORATION Press-fit connection pin
US6042429A (en) * 1997-08-18 2000-03-28 Autosplice Systems Inc. Continuous press-fit knurl pin

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1060271A (en) * 1964-01-06 1967-03-01 Oxley Robert Frederick Improvements in and relating to connecting devices for printed circuit boards
EP0488487A1 (en) * 1990-11-29 1992-06-03 THOMAS & BETTS CORPORATION Press-fit connection pin
US6042429A (en) * 1997-08-18 2000-03-28 Autosplice Systems Inc. Continuous press-fit knurl pin

Also Published As

Publication number Publication date
EP1420479B1 (en) 2011-12-21

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