EP1037319B1 - Contact à ressort pour connecteur comportant un tel contact - Google Patents

Contact à ressort pour connecteur comportant un tel contact Download PDF

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Publication number
EP1037319B1
EP1037319B1 EP00400667A EP00400667A EP1037319B1 EP 1037319 B1 EP1037319 B1 EP 1037319B1 EP 00400667 A EP00400667 A EP 00400667A EP 00400667 A EP00400667 A EP 00400667A EP 1037319 B1 EP1037319 B1 EP 1037319B1
Authority
EP
European Patent Office
Prior art keywords
contact
connector
branch
branches
spring contact
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
Application number
EP00400667A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1037319A1 (fr
Inventor
Jean-François Grimaldi
Jean-Marc Dauba
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.)
TCT Mobile Ltd
Original Assignee
TCT Mobile Ltd
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 TCT Mobile Ltd filed Critical TCT Mobile Ltd
Publication of EP1037319A1 publication Critical patent/EP1037319A1/fr
Application granted granted Critical
Publication of EP1037319B1 publication Critical patent/EP1037319B1/fr
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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • H01R13/2407—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means
    • 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
    • H01R4/185—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 combined with a U-shaped insulation-receiving portion

Definitions

  • the present invention relates to a spring contact for low volume electrical connector and a connector comprising such a contact. It finds more particularly its use in the field of telecommunications, especially in the context of the miniaturization of mobile phones.
  • This type of contact is generally but not exclusively used to connect, reversibly, a battery and a printed circuit located inside a mobile phone. More generally, this type of contact is intended to electrically connect any two devices.
  • this spring contact is soldered by a first end surface on a printed circuit, and has at a second end a flexible tongue which is bent over the first end. This flexible tongue can come into contact with the pads of a battery presented above the connector containing the contacts.
  • Document is also known WO 97/11514 an electrical connector provided with a first face and a second face, opposite to the first face, and having housings open on both sides to accommodate linear contacts which are kept bent in each housing in a generally U-shaped extending perpendicularly to the first and second faces.
  • the two ends of each linear contact protrude at each of the faces, and are intended to come into electrical contact with two printed circuits located on either side of the connector.
  • the connectors mounted in mobile phones have a generally parallelepiped shape.
  • This type of connector has housings or compartments, which contain the spring contacts. These housings open on the one hand on a first face, called lower, and secondly on a second face, said upper, the connector. The lower face comes into contact on a printed circuit and the upper face comes into contact with the battery.
  • a spring contact, inserted in this housing has a substantially U-shaped shape having two branches or arms, and a base or bend of the U, connecting the two branches by one of their end.
  • the base of the U has a circular arc shape and extends in a plane perpendicular to the planes of the first and second face of the connector. Each branch is intended to make electrical contact with equipment.
  • the first leg of the U is fixed, for example welded, to a printed circuit placed against the first face of the connector.
  • the second branch forms a bump protruding from the second face of the connector.
  • the total height of the U is formed by the addition of three heights. These heights are defined by the shortest distance separating two planes, parallel to the plane of the printed circuit, containing points of the spring contact.
  • a first height is constituted by the distance separating a welding point of the first branch with the printed circuit of a junction point between the first branch and the base.
  • a second height is equal to a cord of the base corresponding to the distance between the two extreme points constituting the arc of a circle.
  • a third height is constituted by the distance separating a point of the second branch, the highest relative to the base, of a point of contact between the second branch and the base.
  • a thickness of the connector is defined by the shortest distance connecting the first face to the second face. The thickness of the connector is less than the total height of the contact, because the spring contact is provided to partially sink inside the housing of the connector, when forced. In one example, such a connector has a thickness of 3.2 millimeters.
  • the reduction of the thickness of the connectors and the total height of the spring contacts they contain is only possible at the cost of a significant increase in the width or length of the these connectors and these contacts.
  • the current structure of the spring contacts requires that the total height reduction of the spring contacts can be achieved only by playing on the first and third heights of the spring contact.
  • the decrease of the first and third heights requires the thickening or widening of the blades of these contacts, especially for the blade of the second branch.
  • the widening of the contact blades results in an overall enlargement of the connector. So the overall decrease in connector volume can not be achieved.
  • the current structure of spring contacts therefore poses a problem of miniaturization of these connectors.
  • this type of connector to be mounted on the surface on a printed circuit, is apprehended by suction pipettes. These pipettes must be brought into contact only with areas of the connector not having locally spring contacts. The presence of such a zone, generally in the central position of this type of connector, necessarily implies an increase in the width of the connector. As a result, this type of connector is currently apprehended by two pipettes, each disposed at one end of the connector. This represents another problem of difficulty in handling the connectors of the technique.
  • the object of the invention is to remedy the problems mentioned by proposing a spring contact for a connector, having a substantially U-shaped shape, having two branches and a base connecting the two branches by one of their ends, each branch being intended for make electrical contact with equipment.
  • the two branches extend in planes diverging with respect to each other, the intersection of these two planes being contained in the base of the U.
  • the spring contact then has a lower total height than the spring contact of the prior art.
  • one of the branches and the base of the U are in the same plane.
  • the electrical contact of at least one of the branches is positioned on the free end of said branch.
  • the invention relates to a connector electrical, provided with a first face and a second face opposite to the first face, and comprising at least one housing for receiving a spring contact according to the invention.
  • the housing is open on both sides of the connector, and the spring contact is positioned in the housing so that the plane in which the base of the U extends is substantially parallel to the plane of the faces of the connector.
  • the base connecting the first and the second branch is located inside the housing.
  • This base has a plane of curvature which is substantially parallel to the first and second faces.
  • the increase in width of the spring contact here implies a small increase in the width of the connector.
  • the contacts are arranged in such a way that the first branches of the contacts on the first face are opposite with interspaces of the second branch on the second face. Thus the overall volume of the connector is reduced, which was previously impossible.
  • the connector comprises means for guiding the spring contact.
  • it also comprises holding means.
  • the connector has a plurality of housings, respectively receiving a U-spring contact.
  • the spring contacts are positioned in two adjacent housings, so as to extend in a substantially identical direction but in opposite directions relative to each other, a branch of a contact being adjacent to a branch of the neighboring contact.
  • the arrangement of the branches of the spring contacts is organized so as to generate a spring-free contact area in the middle of the second face. This area can be used to apply a pipette.
  • the connector can be apprehended by a single suction pipette.
  • the connector of the invention comprises a body 1, provided with a first face 2 (visible in the figure 1 opposite to a second face 3 (visible in the figure 3 ), each of the faces extending in planes respectively 2.1 and 3.1.
  • the body 1 comprises housing 4 open on both sides.
  • a housing 4 has a first inlet 5 opening on the first face 2, and a second inlet 6 opening on the second face 3.
  • the two inputs 5 and 6 are separated by a spacer wall 4.1.
  • the connector comprises spring contacts 7, each placed in a housing 4.
  • the body 1 has a thickness 8.
  • the thickness 8 is preferably less than or equal to 1.8 mm.
  • the body 1 has a width 9 and a length 10. In the example shown, the body 1 comprises four housings 4 and four spring contacts 7.
  • the width 9 is preferably equal to 8.3 mm, and the length 10 is preferably equal to 15.3 mm.
  • the connector according to the invention may comprise one or more housings each provided with a spring contact. And the dimensions can be adapted according to the number of spring contacts or the required technical characteristics.
  • the spring contact 7 has a first leg 11 extending in a plane 11.1 and a second leg 12 extending in a plane 12.1.
  • the first branch 11 and the second branch 12 are connected by a base 13.
  • the two branches are intended to establish electrical contact with equipment such as a battery or a printed circuit.
  • the contact can be permanently fixed to the printed circuit by one of its branches, here 11, the battery coming into contact with the other branch, here 12.
  • the base 13 has a curvature plane 13.1. which once the contact mounted in the connector, is parallel to the plans 2.1 and 3.1 defined by the first and second faces. However, it can also be oblique with respect to these same planes.
  • the term curvature plane designates the plane in which this curvature is projected along an axis perpendicular to the first and second faces.
  • the two branches 11 and 12 extend in respective planes 11.1 and 12.1 divergent with respect to each other and the intersection I of these two planes is contained in the base 13 of the U.
  • the plane 11.1 of the branch 11 and the plane 13.1 are substantially merged.
  • the first branch 11 has a rectangular shape with two steps or recesses bayonet 14 and 15. These two steps 14 and 15 thus define three portions on the first branch 11.
  • a first portion 16 is constituted by the end of the first branch 11 The end 16 is a free end, intended to be connected and in particular soldered on a printed circuit.
  • a second portion 17 located between the steps 14 and 15 is a flat surface. The portion 17 is intended to be held in the housing 4 of the body 1.
  • a third portion 18 is defined between the step 15 and the base13.
  • the portion 18 is movable in a plane orthogonal to the plane formed by the portion 17.
  • the portion 18 is movable relative to the portion 17 by means of a hinge formed by the step 15. This step 15 also has the role of strengthen the stiffness of the branch 11.
  • the second branch 12 comprises a first zone 19 forming a shoulder and a return 20.
  • a first portion 21 of the second branch 12 is defined between the zone 19 and the return 20.
  • the zone 19 has a hinge role of the portion 21 relative to to the curvature plane 13.1.
  • the first portion 21 has a flat rectangular shape.
  • the return 20 and the portion 21 are intended to come into contact with one of the pads of a battery, which will be forced against the branch 12, protruding from the second face 3.
  • the return 20 separates the first portion 21 of a second portion 22 of the second leg 12 forming a projecting angle, so that the second portion 22 is curved slightly under the first portion 21.
  • the portions 21 and 22 of the second leg 12 are movable by ratio to the base 13 in a plane perpendicular to the plane of curvature 13.1. Furthermore, the branch 12 is movable in a separate but parallel plane to the mobility plane of the branch 11.
  • a total height of the spring contact 7 is constituted by the addition of a first height equal to the height of the first branch 11 and a second height constituted by the height of the second branch 12.
  • the height of the base is almost zero because its height is equal to the thickness of the blade constituting the spring contact.
  • the heights are defined absolutely by the shortest distance separating two planes parallel to the plane 13.1.
  • the first height is equal to the sum of a height 23 corresponding to the height of the end 16, a height 24 corresponding to the height of the step 14, and a height 25 corresponding to the height of the step 15.
  • the second height is equal to a height 26 of the first portion 21.
  • the second portion 22 has a height 27.
  • the height 27 is as large as possible, so that the second branch 12 does not fully out of the body 1.
  • the portion 22 may comprise at one end legs which allow him to be retained in the second entry 6.
  • the spring contact 7 is held in the housing 4 of the body 1 by holding means.
  • the holding means comprise lugs 28 holding the portion 17 in abutment against an edge 29 of the first inlet 5.
  • the lugs 28 are, for example, drops of plastic melted on the spring contact 7, after its positioning in the housing 4.
  • the spring contact 7 is introduced into the body 1 by the first inlet 5 of the first face 4.
  • the size of the first inlet 5 is such that it leaves a passage to the entirety of the spring contact 7.
  • the second input 6 leaves only the second branch 12 of the spring contact 7. In effect, the branch 11 is retained in the first input 5 by the intermediate wall 4.1.
  • the housing 4 thus comprises a hole, opening from the first inlet 5 to the second inlet 6, having an opening restricted to the size of the opening the second inlet 6 alone.
  • an object for example a battery
  • the branch 12 sinks, the height 26 decreases and the portion 22 s'
  • the maximum stroke of the branch 12 is equal to 1.5 mm.
  • the object applied against the second face 3 must exert a force of between 0.5 and 1.5 newtons to drive a branch 12 inside its housing 4.
  • the connector has an axis of symmetry orthogonal to the first and second faces 2 and 3, and passing through the center of each of them.
  • the axis of symmetry 30 is a feature related to the number of spring contacts 7 included in the body 1. Indeed the axis of symmetry 30 exists only in the cases where the connector has an even number of spring contacts 7 .
  • the connector comprises several housings for example 4a, 4b, respectively receiving a spring contact 7a; 7b.
  • the contacts are positioned to extend in a substantially identical direction but in opposite directions relative to each other, a leg 1a of a contact 7a being adjacent to a branch 12b of the adjacent contact 7b.
  • the arrangement of the contacts relative to each other in the body 1 is made so as to alternately distribute the steps 20 on the second face 3. In return, in this way is homogenized the distribution of the ends 16 on either side of the first face 2.
  • the spring contacts 7 are placed next to each other in the body 1.
  • the space separating two successive branches 12 on the second face 3 is superimposed on the location, on the first face 2, of a branch 11 connected to one of the two branches 12. From a contact 7 to a following, the position of the ends 16 is alternated. Indeed the ends 16 protrude either a first side 31 of the first face 2 or a second side 32 opposite the side 31 of the first face 2.
  • the connector is fixed on both sides 31 and 32 of the printed circuit. Its attachment is stronger, so it is not necessary to perform additional welds to ensure the mechanical placement of the connector.
  • the spring contacts 7 are arranged in a particular manner.
  • This zone 33 is searched in central position. It allows gripping by a single pipette with a diameter of at least 2.5 mm.
  • the connector further comprises recesses or cavities 34.
  • the cavities 34 are cut in two lateral faces 35 and 36 of the respective sides 31 and 32 of the connector 1.
  • the cavities 34 are cut in such a way that free ends 16 of the spring contacts 7 inserted in the body 1 protrude from the sides 31 and 32 where these cavities 34 are arranged.
  • the ends 16 are visually accessible from the second surface 3 to be welded. The welding of the ends 16 on a printed circuit is thus facilitated.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)
EP00400667A 1999-03-11 2000-03-10 Contact à ressort pour connecteur comportant un tel contact Expired - Lifetime EP1037319B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9902996 1999-03-11
FR9902996A FR2790874B1 (fr) 1999-03-11 1999-03-11 Connecteur de faible epaisseur monte en surface sur un circuit imprime

Publications (2)

Publication Number Publication Date
EP1037319A1 EP1037319A1 (fr) 2000-09-20
EP1037319B1 true EP1037319B1 (fr) 2008-02-13

Family

ID=9543052

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00400667A Expired - Lifetime EP1037319B1 (fr) 1999-03-11 2000-03-10 Contact à ressort pour connecteur comportant un tel contact

Country Status (10)

Country Link
EP (1) EP1037319B1 (pt)
JP (2) JP4700814B2 (pt)
CN (1) CN1212693C (pt)
AT (1) ATE386350T1 (pt)
AU (1) AU3296000A (pt)
DE (1) DE60037980T2 (pt)
ES (1) ES2302683T3 (pt)
FR (1) FR2790874B1 (pt)
PT (1) PT1037319E (pt)
WO (1) WO2000054374A1 (pt)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5927607B2 (ja) * 2012-03-15 2016-06-01 北川工業株式会社 コンタクト部材

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2500505Y2 (ja) * 1989-09-26 1996-06-05 松下電工株式会社 Ｉｃ用ソケット
JPH0736341B2 (ja) * 1990-12-25 1995-04-19 山一電機株式会社 両面接触形接続器
US5188534A (en) * 1992-03-19 1993-02-23 Molex Incorporated Surface mount connector with clip engaging contacts
JP2537643Y2 (ja) * 1992-09-04 1997-06-04 日本航空電子工業株式会社 基板間接続用コネクタ
JPH06104054A (ja) * 1992-09-18 1994-04-15 Toshiba Corp 自動装着機対応部品およびその実装方法
JPH07122340A (ja) * 1993-10-26 1995-05-12 Matsushita Electric Works Ltd Ｉｃパッケージのソケットへの保持構造
FR2733358B1 (fr) * 1995-04-21 1997-05-30 Itt Composants Instr Connecteur electrique, notamment pour le raccordement d'une carte a memoire electronique
JP2815138B2 (ja) * 1995-07-12 1998-10-27 エスエムケイ株式会社 コネクタ
JPH0982431A (ja) * 1995-09-19 1997-03-28 Whitaker Corp:The 電気コネクタ及びその製造方法
US5746626A (en) * 1996-10-11 1998-05-05 Bourns, Inc. Electrical connector assembly
JP3068477B2 (ja) * 1996-12-17 2000-07-24 静岡日本電気株式会社 コネクタ
US5975959A (en) * 1996-12-17 1999-11-02 The Whitaker Corporation Smart card connector module
JPH10340747A (ja) * 1997-06-04 1998-12-22 Kyoshin Kogyo Kk 表面実装ジャンパ
JP3296762B2 (ja) * 1997-09-12 2002-07-02 株式会社ケンウッド 電子機器の電源端子取付構造
FR2773244B1 (fr) * 1997-12-26 2000-01-28 Itt Mfg Enterprises Inc Commutateur de detection de la presence d'une carte a memoire electronique dans un dispositif de lecture-ecriture
DE19825808B4 (de) * 1998-06-09 2006-10-26 Amphenol-Tuchel Electronics Gmbh Kontaktelement für Chipkartenkontaktiereinrichtung

Also Published As

Publication number Publication date
DE60037980T2 (de) 2009-01-29
JP4700814B2 (ja) 2011-06-15
CN1296653A (zh) 2001-05-23
FR2790874A1 (fr) 2000-09-15
ATE386350T1 (de) 2008-03-15
FR2790874B1 (fr) 2001-05-04
AU3296000A (en) 2000-09-28
PT1037319E (pt) 2008-05-16
WO2000054374A1 (fr) 2000-09-14
CN1212693C (zh) 2005-07-27
JP4638957B2 (ja) 2011-02-23
JP2010108951A (ja) 2010-05-13
ES2302683T3 (es) 2008-08-01
EP1037319A1 (fr) 2000-09-20
JP2002539588A (ja) 2002-11-19
DE60037980D1 (de) 2008-03-27

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