US3641483A - Sockets for prong socket electrical contacts and in their methods of manufacture - Google Patents

Sockets for prong socket electrical contacts and in their methods of manufacture Download PDF

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Publication number
US3641483A
US3641483A US51773A US3641483DA US3641483A US 3641483 A US3641483 A US 3641483A US 51773 A US51773 A US 51773A US 3641483D A US3641483D A US 3641483DA US 3641483 A US3641483 A US 3641483A
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United States
Prior art keywords
socket
strips
tongues
longitudinal
anvil
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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US51773A
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English (en)
Inventor
Francois Robert Bonhomme
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.)
Connectronics Corp
Original Assignee
Connectronics Corp
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.)
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Publication date
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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
    • H01R13/111—Resilient sockets co-operating with pins having a circular transverse section
    • 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
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/42—Securing in a demountable manner
    • H01R13/428—Securing in a demountable manner by resilient locking means on the contact members; by locking means on resilient contact members
    • H01R13/432—Securing in a demountable manner by resilient locking means on the contact members; by locking means on resilient contact members by stamped-out resilient tongue snapping behind shoulder in base or case

Definitions

  • the socket comprises a portion cut out into contact strips by longitudinal slots and has, over at least a fraction of its length comprising the portion cut into strips, a cross section internally limited by a closed continuous curve and externally by a polygonal closed line.
  • the longitudinal slots are closed at their longitudinal ends and pass through the vertices of the polygonal closed line.
  • the strips are concave in axial direction.
  • the socket ensures good electrical contact even after numerous insertions and extractions.
  • SHEET 3 (IF 4 SOCKETS FOR PRONG SOCKET ELECTRICAL CONTACTS AND IN THEIR METHODS OF MANUFACTURE v
  • the invention relates to sockets, for prong and socket electrical contacts, of the type which comprises a portion cut out into contact strips by longitudinal slots and which, over at least a fraction of their length comprising the above-said portion cut out into strips, have a transverse section limited internally by a continuous closed curve and, externally, by a polygonal closed line inscribed in a curve parallel to the first.
  • Sockets of this type are already known and give satisfactory results. However, the quality of the electrical contact ensured by such sockets, especially afier numerous insertions and extractions, can be further improved.
  • a prong and socket electrical contact socket of the type concerned is characterized by the fact that, on one hand, the longitudinal slots are closed at their longitudinal ends and pass through the vertices of the polygonal closed line and that, on the other hand, the strips of the above-said portion are concave in axial direction and are adapted to be deformed on uniting the socket with a prong.
  • one of the strips at least is cut out by a transversal slot extending between two neighboring longitudinal slots, into two tongues arranged head to tail with respect to one another and the tongues fonned by the one or more transversely cut out strips separate inwardly so as to project by their free ends on the outer surface of the socket and to be able to cooperate with a locking boss provided in the above-said housing.
  • the invention also relates to a method of manufacturing a socket such as defined above.
  • This method is characterized by the fact that it commences with a prismatic solid body of polygonal cross section, that grooves are fashioned over a fraction of the length of the crests of the outer surface, that a longitudinal cavity is pierced in the body whose transverse section has dimensions such that the above-said grooves open into the cavity and constitute the slots dividing the intermediate portion of the socket into strips and that the intermediate portion of the body is then subjected to a permanent mechanical deformation adapted to give the strips their axial concavity.
  • FIG. 1 of the drawings shows, in perspective, a socket constructed according to the invention and the end of a prong corresponding to the socket.
  • FIG. 2 shows partly in cross section at the level of its intermediate portion, and partly in end view, the embodiment of the socket of FIG. 1.
  • FIG. 3 is a partial section along the line III-III of the FIG. 2.
  • FIG. 4 shows, in perspective, another type of socket constructed according to the invention.
  • FIGS. 5 and 6 show in cross section a socket at difi'erent stages of manufacture.
  • FIG. 7 shows, in perspective, another embodiment of a socket according to the invention which is a variation of that shown in FIG. 1.
  • FIG. 8 shows the embodiment of FIG. 7 mounted in an insulating support.
  • FIG. 9 shows one of the phases of the method of manufacturing the embodiment of the FIG. 7, in the case of manual execution.
  • FIG. 10 shows the same phase of the method of manufacture as FIG. 9, but in the case of execution on an automatic machine.
  • a socket l of rectilinear tubular shape having a longitudinal cavity 2 intended to receive a cylindrical prong 3.
  • the socket 1 includes a'concave intermediate portion 4 (in the direction parallel to the axis of insertion) whose internal cross section, in resting position, has dimensions and a surface less than those of the cross section of the prong 3.
  • the socket 1 can include a cylindrical tail T for connecting to an electrical conductor.
  • the intermediate portion 4 When the prong 3 is introduced into the cavity 2, the intermediate portion 4 must then be deformed to enable the prong to pass.
  • the inner surface 5 of the said intermediate portion constitutes a contact surface which will exert pressure on the prong 3, which contributes to establishing good electrical contact between the said prong and socket.
  • the socket 1 has, at least over a fraction 6 of its length comprising the said intermediate portion 4, a cross section limited internally by a closed continuous curve 7 corresponding to the section of the contact surface 5 or of its extension 8 and, externally, by a polygonal closed line 9 inscribed in a curve I0 parallel to the first curve 7.
  • the intermediate portion 4 is cut out into strips 11 by longitudinal slits l2 closed at their ends 13 and passing through the apices 14 of the polygonal closed line 9.
  • the continuous curve 7 is generally constituted by a circumference and forms an inner geometrical limit of the transverse section of the socket. As can be seen in FIG. 2, at the right of the slits 12, the curve 7, shown in mixed line and displaced radially towards the inside to facilitate the reading of the drawing, is extended in imaginary manner while in reality the inner contour of the section is formed by a series of arcs of the curve 7 separated from one another by the slits 12.
  • the polygonal closed line 9 is, preferably, constituted by a hexagonal contour 15 which can be regular when the curve 7 is a circumference since the curve 10, parallel to the curve 7, is then constituted by a concentric circumference.
  • the slits 12 are six in number, corresponding to the number of apices of the contour 15. These slits traverse the wall of the intermediate portion 4, which gives a good flexibility to the strips 11.
  • the ratio of the length of the slits 12 to the diameter of the circumference constituting the curve 7 can vary within fairly wide limits, of the order of 2 to 12.
  • the elasticity of the intermediate portion 4 of such a socket is very good, even if the socket l is formed of brass, copper or aluminum, of which materials the coeficient of elasticity is low.
  • Thickness of the wall of the socket 1, between two slots 12 or between two apices 14 of the polygonal line 9 diminishes, pases through a minimum, then increases to resume its value, which enables the portion 4, on extraction of a prong, to resume with precision its resting position after the deformation caused by the introduction of the said prong.
  • the polygonal outer contour denoted here by 9a
  • the polygonal outer contour can be constituted by an equilateral triangle 16, the slots being three in number and passing through the vertices of the triangle.
  • the other elements similar to those of FIGS. 1 to 3 bear the same reference numerals, followed, in FIG. 4, by the letter a.
  • the method may be as follows, purely by way of nonlinriting example.
  • a solid body is taken, of prismatic outer surface, preferably of regular hexagonal crom section.
  • the slots 12 are machined by a milling along the fraction of the length of the crests of the surface of the body and to a certaindepthh, sothatthe crosssectionofthe body, inthe portion where the slots 12 have been milled, is as shown in FIG. 5, at this first stage of the manufacture of the socket l.
  • the slots 12 are closed at their longitudinal ends.
  • the driving in of the socket lb into the said housing is effected in the direction of the arrow F in this case, it is the tongues 22 which will arrive first in contact with the bosses 28.
  • the portion comprising the slots is mechanically deformed in permanent manner by a constricting operation, so as to obtain the portion 4 which has a concavity in the longitudinal direction.
  • the strips 11 are displaced, in the course of this deformation, radially inwardly, from the position in line of FIG. 6 to the position in continuous line of the sameFIG.
  • Asaresultthereisareductionintheradiusofthe hole and, at the same time, a reduction of the width of the slots 12 which become equal to l, I being less than L.
  • FIGS. 7 to 10 there is shown another embodiment 1 which is a variation lb of the socket l of FIG. 1.
  • the elements of FIGS. 7 to 10 identical with elements already encountered are denoted by the same reference figures followed by the letterband will notbedescribed again.
  • One of the strips llb at least is cut out by a transverse slot extending between two neighboring longitudinal slots 12b so that two tongues 21, 22, arranged head to tail with respect to one another, are formed from the strip 11b which has bee cut transversely.
  • the tongues 21, 22 separate outwardly so as to project by their ends or free transverse edges 23, 24, over the outer surface of the socket lb.
  • the said tongues have a rectangular contour of which three sides are free, the fourth side being located at the junction of the tongue with the outer surface of the socket.
  • the polygonal line 9b is a regular polygon with an even number of equal sides at least four in number, and especially in the case of a hexagon, two diametrically opposite strips llb are each cut into two tongues 21, 22 by a transverse slit 20, as shown in the drawings.
  • the slit 20 is arranged substantially midway along the longitudinal slots 12b.
  • the socket lb is intended to be mounted in a housing 25 provided in a insulating support 26.
  • the housing 25 traverses the said support from one side to the other and opens on to two opposite surfaces of this latter.
  • the said housing 25 is limited by a prismatic surface whose cross section is slightly greater than the section of the socket lb, the contour of the said cross section being parallel to that of a transverse section of the socket lb.
  • the width of these strips is slightly greater than that of the tongues 21, 22.
  • a boss 28 is provided. These bosses 28 are adapted to cooperate with the tongues 21, 22 on the introduction of the socket lb into the housing 25, so as to ensure locking of the socket in the said support.
  • the grooves 27 open at each end of the housing 25.
  • the mounting of the socket lb in the support 26 is effected in the following manner.
  • the socket lb is introduced into the housing 25, through any end of the latter, by taking the the bosses 28 will cause the withdrawal of the tongues 22, which permits the socket 1b to continue to penetrate into the housing 25.
  • the said tongues 22 by reason of their elasticity, are raised and resume the position that they had before coming into contact with the bosses 28.
  • the dimension of the boxes 28 along the direction of the arrow F is equal to the width of the transverse slot 20, i.e., to the distance, along the direction F, of the free edges 23 and 24 of the tongues 21, 22.
  • the surfaces of the bosses 28 which come into contact with the free edges 23, 24 of the tongues are substantially right angles to the axis of the housing 25.
  • these surfaces could be inclined on the said axis so that the cross section of the bosses 28, instead of being rectangular as in FIG. -8, would be trapezoid, the small base being turned towards the axis of the housing 25 and being less than the width of the slot 20, while the large base of the section of the boss furthest spaced from the axis of the housing, would have a dimension greater than the width of the slot 20.
  • This tool 28 includes, on one hand, a head 29 in the shape of an anvil provided with two flat surfaces 29a, 29b inclined in sauna n-rnr opposite directions, so as to form an obtuse angle, whose apex projects outwardly and, on the other hand, a handle 30.
  • width 1 of the head-29 is lem than the width of the slot 20, while the length h of the head 29 is less than the large dimension of the slot 20.
  • the said anvil 29 When the anvil 29 is in the cavity 2b, the said anvil is made, by acting on the handle 30, to undergo a rotation of about 90 and the said anvilis brought into contact with the tongues 21, 22, which are again in extension of one another, the large dimension h of said anvil 29 being then oriented in the direction of the axis of the socket lb. There is then exerted on the tongues 21, 22, by means of the anvil 29, a force sufiicient to cause a permanent outward deformation of the said tongues 21, 22. The tool is disengaged by repeating in reverse direction the operations which had been necessary for the introduction of the latter into the cavity 2b. This operation of deformation of the tongues is effected for all the strips 11b which have been transversely cut.
  • the anvil 29 is introduced into the cavity 2b through the slot 20 from the right to deform the tongues 21, 22 on the left and through the slot 20 on the left to deform the tongues 21, 22 on the right.
  • the strips 11 are supported by belts which are opposed to the separation of the said strips 11, 11a, 11b towards the outside of the socket. Due to the fact that the slots 12, 12a, 12b pass through the apices of the polygonal lines 14, 14a, 14b, the said strips have a transverse section such that they can be rendered concave in axial direction.
  • FIG. 7 enables a socket to be obtained whose mounting and locking in an insulating support are simple and rapid.
  • Socket for a prong and socket electrical contact comprising a portion cut out into contact strips by longitudinal slots and having, over at least a fraction of its length comprising said portion, a transverse section limited internally by a closed continuous curve and, externally, by a polygonal closed line inscribed in a curve parallel to the first, wherein the longitudinal slots are closed at their longitudinal ends and pass through the vertices of the polygonal closed line and the strips of said portion are concave in an axial direction and are adapted to be deformed on the connection of the socket and a prong.
  • Socket according to claim 1 arranged for mounting in a housing provided in an insulating support, wherein at least one of said strips is cut by a transverse slot extending between two neighboring longitudinal slots into two tongues arranged head to tail with respect to one another and the tongues formed by the one or more transversely cut out strips separate outwardly so as to project by their free ends on the outer surface of the socket and to be cooperable with a locking boss provided in said housing.
  • Socket according to claim 3 wherein the polygonal closed line is a regular polygon with the same center as the circumference, including an even number of equal sides at least four in number.
  • Socket according to claim 2 including two diametrically opposite strips, each cut into two tongues by a said transverse slot.
  • Method of manufacturing a socket for an electrical contact comprising starting with a solid prismatic body of polygonal cross section, machining grooves over a fraction of the length of the crests of the'outer surface, piercing a longitudinal cavity in the body whose cross section has dimensions such that said grooves open into the cavity and constitute slots dividing the intermediate portion of the socket into strips and then subjecting the intermediate portion of the body to permanent mechanical deformation adapted to give the strips their axial concavity.
  • Method according to claim 9 for manufacturing a socket wherein before subjecting the intermediate portion of the body to said permanent mechanical deformation, one or several strips are provided with a transverse slot extending between two neighboring longitudinal slots, a tool in the form of an anvil is introduced, the large dimension of the anvil being oriented along the direction of the transverse slot, said anvil is subjected, inside the socket, to a rotation of about the tongues formed by the transversely cut out strip are brought into contact with said anvil, whose large dimension is then oriented at right angles to the large dimension of the transverse slot, a force sufficient to cause permanent deformation of said tongues outwardly is applied, and the tool is disengaged.

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  • Manufacturing Of Electrical Connectors (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
US51773A 1969-07-04 1970-07-02 Sockets for prong socket electrical contacts and in their methods of manufacture Expired - Lifetime US3641483A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6922890A FR2052019A5 (it) 1969-07-04 1969-07-04

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US51773A Expired - Lifetime US3641483A (en) 1969-07-04 1970-07-02 Sockets for prong socket electrical contacts and in their methods of manufacture

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US (1) US3641483A (it)
DE (1) DE2033071A1 (it)
FR (1) FR2052019A5 (it)
GB (1) GB1311116A (it)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3815081A (en) * 1973-05-02 1974-06-04 Illinois Tool Works Electrical connector
US4010993A (en) * 1970-05-29 1977-03-08 Bunker Ramo Corporation Electrical connector device
US4272149A (en) * 1979-09-28 1981-06-09 The Bendix Corporation One piece socket type electrical contacts
US4329008A (en) * 1980-04-01 1982-05-11 Braginetz Paul A High density connector module with tri-paddle contact elements
US4456324A (en) * 1981-08-20 1984-06-26 Radiall Industrie Interior conductor support for high frequency and microwave coaxial lines
US4657335A (en) * 1986-01-30 1987-04-14 K & K Stamping Radially resilient electrical socket
US4720157A (en) * 1986-10-30 1988-01-19 General Motors Corporation Electrical connector having resilient contact means
US4734063A (en) * 1986-01-30 1988-03-29 Joseph J. Koch Radially resilient electric socket
US5496657A (en) * 1994-03-16 1996-03-05 Dixon, Jr.; Alfred R. Modular battery system comprising individual interconnected modules
US5921822A (en) * 1995-07-25 1999-07-13 Framatome Connectors Interlock Inc. Connector assembly
US6328615B1 (en) 2000-03-02 2001-12-11 Itt Manufacturing Enterprises, Inc. Contact formed of joined pieces
US6482049B1 (en) 1999-07-16 2002-11-19 Amphenol Corporation Radially resilient electrical connector
US6767260B2 (en) 2002-02-28 2004-07-27 Qa Technology Company, Inc. Hyperboloid electrical contact
US6837756B2 (en) 2001-10-05 2005-01-04 Amphenol Corporation Radially resilient electrical connector and method of making the same
US6899571B1 (en) 2000-05-11 2005-05-31 Konnektech Ltd. Radially resilient electrical connector with welded grid
US7048596B2 (en) 2001-10-18 2006-05-23 Konnektech, Ltd. Electrical connector grid anchor and method of making the same
WO2007085098A1 (de) * 2006-01-26 2007-08-02 Huber + Suhner Ag Steckverbinder
US7559779B1 (en) 2008-05-14 2009-07-14 Cinch Connectors, Inc. Electrical connector
US20220255258A1 (en) * 2019-05-22 2022-08-11 Sumitomo Wiring Systems, Ltd. Connection terminal and connector

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4447109A (en) * 1982-06-04 1984-05-08 Western Electric Company, Inc. Connector pin
GB2130814B (en) * 1982-10-11 1986-04-23 Astralux Dynamics Ltd Insulation displacement contact combined with socket for pin
GB9021982D0 (en) * 1990-10-10 1990-11-21 Smiths Industries Plc Electrical contacts and their manufacture
JP2005166489A (ja) * 2003-12-03 2005-06-23 Tokai Rika Co Ltd 雌型端子

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH114988A (de) * 1925-08-25 1926-05-17 Co Delta Stecker zur Verbindung elektrischer Leitungen.
DE927342C (de) * 1950-11-18 1955-05-05 Albert Dipl-Ing Simonin Steckdose
GB993316A (en) * 1960-09-12 1965-05-26 Bonhomme F R Improvements in sockets for use in co-operation with plug-in elements
FR1479600A (fr) * 1966-04-21 1967-05-05 Douille de contact à fente, servant en particulier à l'enfichage d'une broche coaxiale
US3396364A (en) * 1965-11-15 1968-08-06 Connectronics Corp Electrical socket member having intermediate resilient strips and process for making same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH114988A (de) * 1925-08-25 1926-05-17 Co Delta Stecker zur Verbindung elektrischer Leitungen.
DE927342C (de) * 1950-11-18 1955-05-05 Albert Dipl-Ing Simonin Steckdose
GB993316A (en) * 1960-09-12 1965-05-26 Bonhomme F R Improvements in sockets for use in co-operation with plug-in elements
US3396364A (en) * 1965-11-15 1968-08-06 Connectronics Corp Electrical socket member having intermediate resilient strips and process for making same
FR1479600A (fr) * 1966-04-21 1967-05-05 Douille de contact à fente, servant en particulier à l'enfichage d'une broche coaxiale

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4010993A (en) * 1970-05-29 1977-03-08 Bunker Ramo Corporation Electrical connector device
US3815081A (en) * 1973-05-02 1974-06-04 Illinois Tool Works Electrical connector
FR2228310A1 (it) * 1973-05-02 1974-11-29 Illinois Tool Works
US4272149A (en) * 1979-09-28 1981-06-09 The Bendix Corporation One piece socket type electrical contacts
US4329008A (en) * 1980-04-01 1982-05-11 Braginetz Paul A High density connector module with tri-paddle contact elements
US4456324A (en) * 1981-08-20 1984-06-26 Radiall Industrie Interior conductor support for high frequency and microwave coaxial lines
US4657335A (en) * 1986-01-30 1987-04-14 K & K Stamping Radially resilient electrical socket
US4734063A (en) * 1986-01-30 1988-03-29 Joseph J. Koch Radially resilient electric socket
US4720157A (en) * 1986-10-30 1988-01-19 General Motors Corporation Electrical connector having resilient contact means
US5496657A (en) * 1994-03-16 1996-03-05 Dixon, Jr.; Alfred R. Modular battery system comprising individual interconnected modules
US5921822A (en) * 1995-07-25 1999-07-13 Framatome Connectors Interlock Inc. Connector assembly
US6139374A (en) * 1995-07-25 2000-10-31 Framatome Connectors Interlock Inc. Connector assembly
US6482049B1 (en) 1999-07-16 2002-11-19 Amphenol Corporation Radially resilient electrical connector
US6328615B1 (en) 2000-03-02 2001-12-11 Itt Manufacturing Enterprises, Inc. Contact formed of joined pieces
US6899571B1 (en) 2000-05-11 2005-05-31 Konnektech Ltd. Radially resilient electrical connector with welded grid
US6837756B2 (en) 2001-10-05 2005-01-04 Amphenol Corporation Radially resilient electrical connector and method of making the same
US7048596B2 (en) 2001-10-18 2006-05-23 Konnektech, Ltd. Electrical connector grid anchor and method of making the same
US6767260B2 (en) 2002-02-28 2004-07-27 Qa Technology Company, Inc. Hyperboloid electrical contact
US20040237301A1 (en) * 2002-02-28 2004-12-02 Qa Technology Company, Inc. Hyperboloid electrical contact
US7191518B2 (en) 2002-02-28 2007-03-20 Qa Technology Company, Inc. Method of making a hyperboloid electrical contact
WO2007085098A1 (de) * 2006-01-26 2007-08-02 Huber + Suhner Ag Steckverbinder
CH698271B1 (de) * 2006-01-26 2009-06-30 Huber+Suhner Ag Steckverbinder.
US7559779B1 (en) 2008-05-14 2009-07-14 Cinch Connectors, Inc. Electrical connector
US20220255258A1 (en) * 2019-05-22 2022-08-11 Sumitomo Wiring Systems, Ltd. Connection terminal and connector
US11862890B2 (en) * 2019-05-22 2024-01-02 Sumitomo Wiring Systems, Ltd. Connection terminal and connector

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Publication number Publication date
FR2052019A5 (it) 1971-04-09
DE2033071A1 (de) 1971-01-21
GB1311116A (en) 1973-03-21

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