EP1372221B1 - Elément de contact électrique - Google Patents

Elément de contact électrique Download PDF

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Publication number
EP1372221B1
EP1372221B1 EP03011819A EP03011819A EP1372221B1 EP 1372221 B1 EP1372221 B1 EP 1372221B1 EP 03011819 A EP03011819 A EP 03011819A EP 03011819 A EP03011819 A EP 03011819A EP 1372221 B1 EP1372221 B1 EP 1372221B1
Authority
EP
European Patent Office
Prior art keywords
contact element
electrical
contact
spring
bow
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
EP03011819A
Other languages
German (de)
English (en)
Other versions
EP1372221A2 (fr
EP1372221A3 (fr
Inventor
Georg Burkhardt
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1372221A2 publication Critical patent/EP1372221A2/fr
Publication of EP1372221A3 publication Critical patent/EP1372221A3/fr
Application granted granted Critical
Publication of EP1372221B1 publication Critical patent/EP1372221B1/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
    • H01R13/2442—Contacts for co-operating by abutting resilient; resiliently-mounted with a single cantilevered beam
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/20—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve
    • H01R43/24—Assembling by moulding on contact members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections

Definitions

  • the invention is based on an electrical contact element of the type defined in the preamble of claim 1 in more detail.
  • Such an electrical contact element is disclosed in US Pat. No. 6,190,213.
  • Such a contact element is known from practice and can be used for example as a contact between a sensor and a control unit of an electro-hydraulic brake.
  • a known contact element of the aforementioned type comprises a bow spring, which is connected to a bracket leg via a welded connection to a control unit.
  • Welding and soldering connections have the disadvantage that there is no non-destructive releasability between the two interconnected electrical units and often a large space is required.
  • the electrical contact element according to the invention for establishing a connection between at least two electrical units with the features according to the preamble of claim 1, wherein the bow spring is on the one hand firmly connected to the first electrical unit and has a bonding or welding contact and on the other hand for connection the second electrical unit is formed with a spring contact has the advantage that it offers the possibility of a detachable connection between two electrical units due to the spring contact.
  • a firm electrical connection can be produced, for example, with a computer via the bond area or contact.
  • the spring contact is in installation position, for example, with a circuit board in conjunction.
  • the contact element according to the invention is therefore on the one hand a bonding terminal for a hybrid bonding and on the other hand via the spring contact in the broadest sense, a connector available.
  • the bow spring is for example via the bonding area with a control unit, which forms the first electrical unit, and via the contact element with a sensor in communication, which forms the second electrical unit.
  • the two electrical units are blindly joined together and also easily separable. In this case, advantageously no assembly or disassembly forces must be countered.
  • the electrical and mechanical contact of the bow spring and the second electrical unit is purely on the spring force of the bow spring.
  • the electrical contact element according to the invention can be used anywhere where on the one hand a bond to an electrical assembly and on the other hand a separable connection to another electrical unit is required.
  • the electrical contact element according to the invention in the automotive sector can find a variety of applications, such as in an electrohydraulic brake, or even in other electrical appliances, such as telephones, are used.
  • the electrical contact element according to the invention offers the advantage of tolerance compensation in the spring direction and also with regard to the requirements of the positional tolerance of the contact point of the second electrical component corresponding to the contact element, for example formed by a printed circuit board, with regard to the connection to the second electrical component.
  • the bow spring at least partially on a plastic extrusion.
  • the plastic extrusion coating which also serves as insulation for the bow spring produced, for example, from a copper alloy, offers the possibility of subsequently attaching the electrical contact element to a mounting surface also made of plastic, for example that of a control unit, by connecting the plastic extrusion to the mounting surface.
  • This is particularly advantageous since when spraying a controller bow springs should be designed as inserts, which is high demands placed on the injection mold and therefore is not desirable, especially for cost reasons. Even trained as insert parts bow springs would be difficult to demold. Due to the possibility of retrofitting the contact element on the acreage accounts for these difficulties.
  • the plastic encapsulation during bonding ie in the electrical contacting of the bow spring and the first electrical assembly, a sufficient stability, since in this connection technique, the components would otherwise tend to vibrate.
  • the plastic extrusion is formed like a pedestal, so that it can be connected flush with a crop surface.
  • the plastic extrusion is associated with a plurality of bow springs, which are each one hand firmly connected to the first electrical unit and have a bonding contact and on the other hand for connection to the second electrical unit with a Spring contact are formed. This makes it possible to contact several interfaces simultaneously.
  • the plastic extrusion coating advantageously has means for connection to the mounting surface.
  • the means for connection to the cultivation surface may comprise a bore for a mounting pin of the mounting surface, a shoulder for connection to an embossing lip of the mounting surface or at least one ultrasonic welding bar.
  • An ultrasonic welding strip has the advantage that in addition to the positive engagement and a material connection between the plastic extrusion and also made of plastic cultivation surface can be produced.
  • the ultrasonic welding bar is fused with the mounting surface via an ultrasonic vibration, whereby the plastic softens and the welding bar dips into the mounting surface.
  • the contact element may be provided with hard gold.
  • the bond area can be provided with fine gold. It is also conceivable, however, to provide the bonding area with another material suitable for bonding, such as aluminum.
  • FIG. 1 shows a control unit assembly 10 of an electrohydraulic brake not shown here for use in a brake system of a motor vehicle.
  • the control unit assembly 10 comprises a housing 12 produced by an injection molding process, which is connected via a fastening screw 14 to a sensor assembly 16, which u. a. includes a pressure sensor 18, wherein the rest of the structure of the sensor assembly 16 is not discussed in detail below.
  • the pressure sensor 18 is connected to a printed circuit board 20, in which a plurality of juxtaposed bow springs 22 engage, which are attached to the housing 12 of the ECU 10, wherein in the representation selected in Figure 1, only one bow spring 22 can be seen.
  • the bow springs 22 each comprise a bonding area 24 and for electrical coupling to the circuit board 20, the bow spring 22, which are formed as stamped grid, each having a spring contact 26.
  • the control unit assembly 10 include the bow springs 22 a plastic extrusion not shown in Figure 1, which is associated with the bow springs 22 together.
  • FIGS. 2 to 4 show a first exemplary embodiment of an electrical contact element for installation in a control unit assembly of the type shown in FIG.
  • the contact element 30 has a plurality of parallel bow springs 22, of which only two are shown completely and two are indicated.
  • the bow springs 22, which are made of a copper alloy are each having at one end a spring contact 32 for connection to a circuit board.
  • a contact cap 34 is formed at the spring contact 32.
  • the bow springs 22 each have a bonding or welding area or bonding or welding contact 36 for connection to the control unit building unit.
  • the bow springs 22 are each received by a common plastic extrusion 38, so that the bonding or welding contact 36 is exposed.
  • the bow springs 22 may be secured in the plastic extrusion 38 by means of a transversely extending retaining clip 40 made of plastic.
  • the bonding contacts 36 of the bow spring 22 formed as a stamped grid are each provided with a bondable surface.
  • the spring contact 32 of the bow spring 22 is each provided with hard gold.
  • the socket-like molded plastic extrusion 38 has holes 42, via which the contact element 30 can be fastened to fastening pins 44 of a mounting surface 46.
  • the plastic extrusion 38 is inserted over the holes 42 on the mounting pin 44. Subsequently, the fastening pins made of plastic 44 are pressed so that they have the front side of the shape of a ball head and the contact element 38 positively and secured is applied to the cultivation surface 46, as Figure 4 can be seen.
  • FIG. 5 to 7 embodiment of a contact element 50 differs from the contact element according to Figures 2 to 4, characterized in that the plastic extrusion 38 for attachment to a mounting surface 46 no holes, but a shoulder 52 which circumferentially in the connecting region to the Attachment surface 46 is arranged on the encapsulation 38 and cooperates with an embossing lip 54 of the mounting surface 46. Moreover, the structure of the contact element 50 corresponds to that of the contact element shown in Figures 2 to 4.
  • the plastic extrusion 38 is arranged on the mounting surface 46 such that it rests with its bottom flush with the latter and the shoulder 52 engages the embossing lip 54. Subsequently, the embossing lip 54 is embossed by means of a suitable tool, so that an at least three-sided circumferential, so-called Regewulst 56 forms, which at least partially covers the shoulder 52 of the plastic extrusion 38, as Figures 6 and 7 can be seen.
  • FIGs 8 and 9 embodiment of a contact element 60 differs from that of Figures 2 to 4, characterized in that the plastic extrusion 38 also has no holes, but is provided for attachment to a mounting surface 46 at the bottom with a Ultraschallsch spalippe 62, the in which in FIG 9, mounted state engages in the mounting surface 46 and represents a melting zone, so that between the mounting surface 46 and the plastic extrusion 38 of the trained as punched frame bow springs 22 in addition to a positive engagement and a material connection is present.
  • a Ultraschallsch spalippe 62 the in which in FIG 9, mounted state engages in the mounting surface 46 and represents a melting zone, so that between the mounting surface 46 and the plastic extrusion 38 of the trained as punched frame bow springs 22 in addition to a positive engagement and a material connection is present.
  • a compound is particularly stable.
  • the ultrasonic welding surface 62 is fused via an ultrasonic vibration with the mounting surface 46 such that the plastic softens and the ultrasonic welding bar 62 dips into the mounting surface 46.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Push-Button Switches (AREA)
  • Contacts (AREA)

Claims (4)

  1. Elément de contact électrique pour établir une liaison conductrice entre au moins deux composant électriques (10, 16) pouvant être reliés mécaniquement, comprenant au moins un ressort à étrier (22) en contact fixe avec le premier composant (10) au moyen d'un contact métallisé ou soudé (24, 26), qui présente un contact à ressort (26, 32) pour la mise en contact avec le deuxième composant (6) électrique, ainsi qu'au moins partiellement une enveloppe en matière plastique (38) en forme de socle, l'enveloppe en matière plastique (38) étant associée à plusieurs ressorts à étrier (22),
    caractérisé en ce que
    l'enveloppe en matière plastique (38) est formée sur une extrémité du ressort à étrier (22) et présente des moyens pour l'ancrage mécanique inamovible de l'élément de contact électrique sur une surface de montage (46) du premier composant (10) électrique, et les moyens comprennent au moins un alésage (42) pour un tenon de fixation (44) de la surface de montage (46) pouvant être scellé, ou un gradin (52) pour la liaison avec une lèvre à estamper (54) de la surface de montage (46), ou au moins une barrette soudée par ultrason (62).
  2. Elément de contact électrique selon la revendication 1,
    caractérisé en ce que
    le contact à ressort (32) est muni d'une calotte de contact (34).
  3. Elément de contact électrique selon la revendication 1 ou 2,
    caractérisé en ce que
    le contact à ressort (26, 32) est muni d'or dur.
  4. Elément de contact électrique selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce que
    le contact soudé (24, 36) est muni d'une surface pouvant être métallisée.
EP03011819A 2002-06-15 2003-05-26 Elément de contact électrique Expired - Lifetime EP1372221B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10226680 2002-06-15
DE10226680A DE10226680A1 (de) 2002-06-15 2002-06-15 Elektrisches Kontaktelement

Publications (3)

Publication Number Publication Date
EP1372221A2 EP1372221A2 (fr) 2003-12-17
EP1372221A3 EP1372221A3 (fr) 2005-01-05
EP1372221B1 true EP1372221B1 (fr) 2007-05-16

Family

ID=29557838

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03011819A Expired - Lifetime EP1372221B1 (fr) 2002-06-15 2003-05-26 Elément de contact électrique

Country Status (3)

Country Link
EP (1) EP1372221B1 (fr)
AT (1) ATE362662T1 (fr)
DE (2) DE10226680A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4632978B2 (ja) * 2006-03-15 2011-02-16 モレックス インコーポレイテド 防水プラグ及びその製造方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05326092A (ja) * 1992-05-27 1993-12-10 Yamaichi Electron Co Ltd Ｉｃパッケージ用ソケット
GB9621497D0 (en) * 1996-10-15 1996-12-04 Amp Holland Board lock for electrical connector
DE19829467C2 (de) * 1998-07-01 2003-06-18 Amphenol Tuchel Elect Kontaktträger insbesondere für einen dünnen Smart Card Connector
US20010034162A1 (en) * 1998-12-10 2001-10-25 Framatome Connectors International Courbevoie Connector with prestressed contacts and its use

Also Published As

Publication number Publication date
EP1372221A2 (fr) 2003-12-17
EP1372221A3 (fr) 2005-01-05
DE10226680A1 (de) 2003-12-24
DE50307275D1 (de) 2007-06-28
ATE362662T1 (de) 2007-06-15

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