EP1037319A1 - Federkontakt für Verbinder mit einem solchen Kontakt - Google Patents

Federkontakt für Verbinder mit einem solchen Kontakt Download PDF

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Publication number
EP1037319A1
EP1037319A1 EP00400667A EP00400667A EP1037319A1 EP 1037319 A1 EP1037319 A1 EP 1037319A1 EP 00400667 A EP00400667 A EP 00400667A EP 00400667 A EP00400667 A EP 00400667A EP 1037319 A1 EP1037319 A1 EP 1037319A1
Authority
EP
European Patent Office
Prior art keywords
contact
connector
branch
branches
spring
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
EP00400667A
Other languages
English (en)
French (fr)
Other versions
EP1037319B1 (de
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
Alcatel CIT SA
Alcatel SA
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 Alcatel CIT SA, Alcatel SA filed Critical Alcatel CIT SA
Publication of EP1037319A1 publication Critical patent/EP1037319A1/de
Application granted granted Critical
Publication of EP1037319B1 publication Critical patent/EP1037319B1/de
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 connector electrical device of reduced volume as well as a connector comprising such a contact. It finds more particularly its use in the field of telecommunications, particularly in the context of the miniaturization of mobile phones.
  • This type of contact is generally but not exclusively used to reversibly connect a battery and a circuit board located inside a cell phone. More generally, this type of contact is intended to electrically connect two devices any.
  • this spring contact is welded by a first surface end on a printed circuit, and present at a second end a flexible tongue which is curved above the first end. This flexible tongue can come in particular into contact with the studs a battery presented above the connector containing the contacts.
  • the connectors mounted in mobile phones have a shape broadly parallelepiped.
  • This type of connector includes housings or compartments, which contain the spring contacts. These housings lead on the one hand to a first face, called the lower face, and on the other hand on a second face, called the upper face, of the connector. The face lower comes into contact on a printed circuit and the upper face comes contact on the battery.
  • a spring contact, inserted in this housing has a substantially U-shaped with two branches or arms, and a base or elbow of the U, connecting the two branches by one of their ends.
  • the basis of U has the shape of an arc of a circle and extends in a plane perpendicular to the first and second faces of the connector. Each branch is intended for establishing electrical contact with equipment.
  • the first branch of the U is fixed, for example soldered, to a circuit printed against the first side 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 between two planes, parallel to the plane of the printed circuit, containing points of contact to spring.
  • a first height is formed by the distance between a point soldering of the first branch with the printed circuit of a point of junction between the first branch and the base.
  • a second height is equal to a base chord corresponding to the distance between the two points extremes constituting the arc of a circle.
  • a third height consists of the distance between a point and the second branch, the highest by relative to the base, 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 side to the second side. Connector thickness is less at the total height of the contact, because the spring contact is designed to partially sinking inside the connector housing, when it is constrained. In one example, such a connector has a thickness of 3.2 millimeters.
  • the reduction in 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 width or the length of these connectors and contacts.
  • the current structure spring contacts require that the decrease in total height of the contacts spring can only be obtained by playing on the first and third heights of the spring contact.
  • the reduction of the first and third heights requires thickening or widening of the blades of these contacts, especially for the blade of the second branch.
  • the widening of Contact blades result in an overall widening of the connector. So the overall decrease in connector volume cannot be obtained.
  • 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 should only be brought into contact with areas of the connector not having locally spring contacts. The presence of such an area, generally in the central position of this type of connector, implies necessarily an increase in the width of the connector. In Consequently, this type of connector is currently apprehended by two pipettes, each arranged at one end of the connector. This represents a another problem of difficulty in handling the connectors of the technique.
  • the invention aims to remedy the problems cited by proposing a spring contact for 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 to establish electrical contact with equipment.
  • the two branches extend in planes divergent from one another, the intersection of these two planes being contained in the base of the U.
  • the spring contact then has a lower overall height than the contact spring 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 electric, with a first face and a second face opposite the first face, and comprising at least one housing for receiving a contact spring according to the invention.
  • the housing is open on both sides of the connector, and the spring contact is positioned in the housing so so that the plane in which the base of the U extends is substantially parallel in the plane of the connector faces.
  • the base connecting the first and the second branch is located at inside the accommodation.
  • This base has a plane of curvature which is substantially parallel to the first and second faces.
  • the increase of width of the spring contact here implies a slight increase in width of the connector.
  • the contacts are arranged so that the first branches of the contacts, on the first face, are opposite with intermediate spaces of the second branch on the second face. So the overall volume of the connector is reduced, which was previously impossible.
  • the connector includes means for guiding the spring contact.
  • the connector has several housings, receiving respectively a U-shaped spring contact.
  • the spring contacts are positioned in two adjacent housings, so that extend in a substantially identical direction but in opposite direction relative to each other, a branch of a contact being adjacent to a neighbor contact branch.
  • the arrangement of the branches of the spring contacts is organized so as to generate a contactless spring area in the middle of the second side. This area can be used to apply a pipette.
  • the connector can be grasped by a single suction pipette.
  • the connector of the invention comprises a body 1, provided with a first side 2 (visible in Figure 1) opposite a second side 3 (visible in Figure 3), each of the faces extending in planes respectively 2.1 and 3.1.
  • the body 1 has housings 4 open on both sides. In this Indeed, a housing 4 has a first entry 5 leading to the first face 2, and a second inlet 6 leading to the second face 3. The two entrances 5 and 6 are separated by an intermediate wall 4.1.
  • the connector has spring contacts 7, each placed in a housing 4.
  • the body 1 has a thickness 8. The thickness 8 is preferably less or equal to 1.8 mm.
  • the body 1 has a width 9 and a length 10. In the example shown, the body 1 has 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 include one or more housing each provided with a spring contact. And the dimensions can be adapted according to the number of spring contacts or characteristics techniques required.
  • the spring contact 7 has a first branch 11 extending in a plane 11.1 and a second branch 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 a 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 plane of curvature 13.1. who once the contact mounted in the connector, is parallel to planes 2.1 and 3.1 defined by the first and second faces. However, it can also be oblique compared to these same plans.
  • the term plane of curvature 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 planes respectively 11.1 and 12.1 divergent from each other and the intersection I of these two planes is contained in the base 13 of the U.
  • plan 11.1 of branch 11 and the plan 13.1 are substantially confused.
  • the first branch 11 has a rectangular shape having two bayonet steps or steps 14 and 15. These two steps 14 and 15 thus define three portions on the first branch 11.
  • a first portion 16 is formed 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 maintained in the housing 4 of the body 1.
  • a third portion 18 is defined between step 15 and base 13.
  • 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 reinforcing the stiffness of branch 11.
  • the second branch 12 has a first zone 19 forming shoulder and back 20.
  • a first portion 21 of the second branch 12 is defined between zone 19 and return 20.
  • Zone 19 has a role hinge of the portion 21 relative to the plane of curvature 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 studs 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 a second portion 22 of the second branch 12 forming an angle protruding, so that the second portion 22 is slightly curved under the first portion 21.
  • the portions 21 and 22 of the second branch 12 are movable relative to base 13 in a plane perpendicular to the plane of curvature 13.1. Furthermore, the branch 12 is movable in a separate plane but parallel to the mobility plan of 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 consisting of the height of the second branch 12. Indeed, the height of the base is almost zero, because its height is equal to the thickness of the blade constituting the spring contact. Heights are absolutely defined by the shortest distance between 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, of a height 24 corresponding to the height of the step 14, and a height 25 corresponding to the height of 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 the most large possible, so that the second branch 12 does not come out full body 1.
  • the portion 22 can have tabs at one end which allow it to be retained in the second entry 6.
  • the spring contact 7 is maintained in the housing 4 of the body 1 by holding means.
  • the means of maintenance include lugs 28 holding the portion 17 in abutment a border 29 of the first entry 5.
  • the pins 28 are for example plastic drops melted on the spring contact 7, after positioning in the housing 4.
  • the spring contact 7 is introduced into the body 1 by the first entry 5 of the first face 4.
  • the size of the first entry 5 is such that it leaves a passage to the entire contact at spring 7.
  • the second entry 6 leaves only the second branch 12 of the spring contact 7. Indeed, branch 11 is retained in the first entry 5 through the intermediate wall 4.1.
  • the housing 4 thus comprises a hole, opening from the first entry 5 to the second entry 6, having an opening restricted to the size of the opening, the second entry 6 alone.
  • the height 26 decreases and the portion 22 sinks into the housing 4.
  • the maximum stroke of the branch 12 is equal at 1.5 mm.
  • the object applied against the second face 3 must exert a force between 0.5 and 1.5 newtons to insert a branch 12 inside of his accommodation 4.
  • the connector has an axis of symmetry 30 orthogonal to the faces first and second 2 and 3, and passing through the center of each of them.
  • the axis of symmetry 30 is a peculiarity linked to the number of spring contacts 7 included in the body 1. Indeed the axis of symmetry 30 exists only in cases where the connector has an even number of contacts to spring 7.
  • the connector has several housings for example 4a; 4b, receiving respectively a spring contact 7a; 7b.
  • the contacts are positioned from so as to extend in a substantially identical direction but in direction reverse with respect to each other, a branch 11a of a contact 7a being adjacent to a branch 12b of the neighboring contact 7b.
  • the arrangement of contacts in relation to each other in the body 1 is made so as to alternately distribute the steps 20 on the second side 3. In return, in this way we homogenize 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 ends 16 is alternated. Indeed the ends 16 protrude either by 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 fixation is more solid, so it is not necessary make additional welds to ensure placement connector mechanics.
  • the spring contacts 7 are arranged so particular. This zone 33 is sought in the central position. It allows the gripping by a single pipette with a diameter of at least 2.5 mm.
  • the connector also has recesses or cavities 34.
  • the cavities 34 are cut in two lateral faces 35 and 36 on the sides respectively 31 and 32 of connector 1.
  • the cavities 34 are cut out from such that free ends 16 of the spring contacts 7 inserted in the body 1 protrude from the sides 31 and 32 at the place where these cavities 34 are fitted out.
  • the ends 16 are visually accessible from the second surface 3 to be welded. The welding of the ends 16 on a circuit board 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 Federkontakt für Verbinder mit einem solchen Kontakt Expired - Lifetime EP1037319B1 (de)

Applications Claiming Priority (2)

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

Publications (2)

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

Family

ID=9543052

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00400667A Expired - Lifetime EP1037319B1 (de) 1999-03-11 2000-03-10 Federkontakt für Verbinder mit einem solchen Kontakt

Country Status (10)

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

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

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996033527A1 (fr) * 1995-04-21 1996-10-24 Itt Composants Et Instruments Connecteur electrique, notamment pour le raccordement d'une carte a memoire electronique
WO1997011514A1 (en) * 1995-09-19 1997-03-27 The Whitaker Corporation Electrical connector and method for manufacturing the same
US5746626A (en) * 1996-10-11 1998-05-05 Bourns, Inc. Electrical connector assembly

Family Cites Families (13)

* 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
JP2815138B2 (ja) * 1995-07-12 1998-10-27 エスエムケイ株式会社 コネクタ
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996033527A1 (fr) * 1995-04-21 1996-10-24 Itt Composants Et Instruments Connecteur electrique, notamment pour le raccordement d'une carte a memoire electronique
WO1997011514A1 (en) * 1995-09-19 1997-03-27 The Whitaker Corporation Electrical connector and method for manufacturing the same
US5746626A (en) * 1996-10-11 1998-05-05 Bourns, Inc. Electrical connector assembly

Also Published As

Publication number Publication date
FR2790874B1 (fr) 2001-05-04
DE60037980D1 (de) 2008-03-27
FR2790874A1 (fr) 2000-09-15
AU3296000A (en) 2000-09-28
JP2010108951A (ja) 2010-05-13
CN1296653A (zh) 2001-05-23
DE60037980T2 (de) 2009-01-29
EP1037319B1 (de) 2008-02-13
WO2000054374A1 (fr) 2000-09-14
JP2002539588A (ja) 2002-11-19
ES2302683T3 (es) 2008-08-01
JP4700814B2 (ja) 2011-06-15
PT1037319E (pt) 2008-05-16
CN1212693C (zh) 2005-07-27
JP4638957B2 (ja) 2011-02-23
ATE386350T1 (de) 2008-03-15

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