EP1419513A1 - Interrupteur a cle con u pour un vehicule automobile - Google Patents

Interrupteur a cle con u pour un vehicule automobile

Info

Publication number
EP1419513A1
EP1419513A1 EP02764550A EP02764550A EP1419513A1 EP 1419513 A1 EP1419513 A1 EP 1419513A1 EP 02764550 A EP02764550 A EP 02764550A EP 02764550 A EP02764550 A EP 02764550A EP 1419513 A1 EP1419513 A1 EP 1419513A1
Authority
EP
European Patent Office
Prior art keywords
key switch
switching element
switch according
rotary switching
housing
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
EP02764550A
Other languages
German (de)
English (en)
Other versions
EP1419513B1 (fr
Inventor
Gerd Rudolph
Reiner Luley
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.)
Delphi Technologies Inc
Original Assignee
Delphi Technologies Inc
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 Delphi Technologies Inc filed Critical Delphi Technologies Inc
Publication of EP1419513A1 publication Critical patent/EP1419513A1/fr
Application granted granted Critical
Publication of EP1419513B1 publication Critical patent/EP1419513B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H27/00—Switches operated by a removable member, e.g. key, plug or plate; Switches operated by setting members according to a single predetermined combination out of several possible settings
    • H01H27/06—Key inserted and then turned to effect operation of the switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/54—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having at least five or an unspecified number of operative positions
    • H01H19/56—Angularly-movable actuating part carrying contacts, e.g. drum switch
    • H01H19/58—Angularly-movable actuating part carrying contacts, e.g. drum switch having only axial contact pressure, e.g. disc switch, wafer switch
    • H01H19/585—Angularly-movable actuating part carrying contacts, e.g. drum switch having only axial contact pressure, e.g. disc switch, wafer switch provided with printed circuit contacts

Definitions

  • the invention relates to a key switch for a motor vehicle, in particular for switching a passenger airbag on and off, with a locking cylinder inserted into a housing, the rotor of which is connected via an end driver to an actuating element for actuating switching contacts assigned to fixed contacts.
  • a key switch for switching a passenger airbag of a motor vehicle on and off which comprises a locking cylinder with a rotor held in a housing.
  • the key switch is installed in a glove compartment of the motor vehicle in order to switch the front passenger airbag on and off as required, the key switch being actuated with an ignition key of the motor vehicle.
  • the requirement of turning the case ⁇ driver airbags is particularly given when a counter to the direction of the automobile oriented child seat is transported on a passenger seat, since a triggering of the passenger airbag may cause the child seat to be transported child result in severe injuries of.
  • the lock cylinder of the key switch is designed This means that the rotor has an eccentrically formed cam on the front, which acts on a microswitch when the front passenger airbag is switched on.
  • the microswitch is arranged vertically on a circuit board and the cam actuates the microswitch in the switch position in which the front passenger airbag is switched on. Due to the fact that the microswitch is generally permanently acted upon, the latter can fail due to wear and tear, after which the front passenger airbag is switched off.
  • DE 43 07 711 AI discloses a key switch which comprises a lock cylinder with a rotor inserted into a housing. Two mutually spaced drivers are formed on the end face of the rotor, between which an actuator with a probe finger protruding on the circumference is arranged.
  • the contact fingers on the housing side are used as switching contacts and act on corresponding fixed contacts depending on the rotational position of the rotor, the contact springs and the fixed contacts being aligned perpendicular to the axis of the rotor.
  • the object is achieved in that the actuating element is designed as a rotary switching element with a contact bridge, which has a plurality of contact arms serving as switching contacts, and the contact arms interact with contact tracks serving as fixed contacts.
  • a redundant key switch is provided, with which a number of current paths corresponding to the number of contact arms can be opened and closed, both an electrical consumer being switched on and off and a safety circuit being connected, which, for example, the respective switching state of the consumer of a passenger airbag.
  • the application of a contact track by means of a contact spring is relatively low-wear.
  • the axially aligned arrangement of the lock cylinder to the rotary switching element without an additional actuating element ensures a compact design of the key switch.
  • the contact tracks are resistance-coded and are connected to on-board electronics.
  • the on-board electronics monitor the functionality of the contact tracks and the current paths assigned to the contact tracks and also carry out queries about the switching status. Based on the information, the on-board electronics can, for example, display a notice of the switching status of the consumer assigned to the key switch for the driver of the motor vehicle or report an error in the current paths.
  • the resistance coding of the contact tracks and the monitoring by the on-board electronics ensure a relatively high level of security with regard to the functionality of the key switch.
  • the contact tracks are expediently formed on a printed circuit board assigned to a base of the housing.
  • the Printed circuit board to which other components can be assigned, is relatively inexpensive to manufacture.
  • the rotary switching element is preferably guided in a hood-shaped cover which is fastened to the printed circuit board and which overlaps the end face facing the locking cylinder in a ring shape at the edge.
  • the rotary switching element is largely rotatably protected against dust on the circuit board.
  • This configuration represents an important aspect with regard to the assembly of the key switch, since this is prefabricated without the lock cylinder and the lock cylinder, which matches an ignition key of a motor vehicle, is inserted into the housing during the final assembly of the motor vehicle.
  • the housing with the rotary switching element held captively by the cover is relatively unproblematic to handle and the assignment of an individual locking cylinder is possible at any time after the pre-assembly.
  • the cover is advantageously provided with a spring arm pointing in the direction of the rotary switching element, which locks the rotary switching element in the switching positions of the key switch.
  • the spring arm which locks the switching positions with the rotary switching element also ensures a presetting of one of the switching positions in which the key switch is to be located when it is installed in the motor vehicle.
  • the rotary switching element has on the end facing the lock cylinder two mutually spaced raised stops on which the spring arm of the cover in the appropriate switch positions comes to the system.
  • the stops of the rotary switching element lie in its demolding direction, which is why a relatively inexpensive tool structure is provided.
  • the spring arm is expediently formed in the region of the cover which overlaps the rotary switching element in a ring.
  • the driver is advantageously formed eccentrically on the end face of the rotor and has an essentially rectangular cross section which engages in a corresponding recess in the rotary switching element.
  • the rotary switching element Since damage to the rotary switching element during the assembly of the locking cylinder in the housing can be ruled out, the rotary switching element has an annular elevation in its center, on which the driver comes to rest when the locking cylinder is installed in the housing in a position offset from the recess.
  • the circuit board is expediently equipped with light-emitting diodes for backlighting symbols of a housing cover.
  • the housing, the housing lid, the base, the rotary switching member and / or the cover are preferably made of plastic ge ⁇ . This configuration is a relatively cost ⁇ favorable production is guaranteed by injection molding. It goes without saying that the features mentioned above and still to be explained below can be used not only in the combination specified in each case but also in other combinations without departing from the scope of the present invention.
  • FIG. 1 shows a perspective view of a key switch according to the invention
  • FIG. 2 shows a perspective view according to FIG. 1 without housing
  • FIG. 3 is a perspective view of FIG. 2 without a lock cylinder
  • FIG. 4 shows a perspective view according to FIG. 3 without cover
  • FIG. 5 shows a perspective view according to FIG. 4 without rotary switching element
  • FIG. 6 shows a perspective view according to FIG. 5 without a printed circuit board.
  • the key switch comprises a housing 1 with a housing cover 2, which protrudes circumferentially from the housing 1, and a base 3, which is clipped into the housing 1.
  • the housing 1 which is essentially rectangular in cross section and which has a closing cylinder 4 holds, provided on its opposite narrow sides with leaf spring arms 5.
  • the locking cylinder 4 has a rotor 7, on the end face of which a driver 8, which is essentially rectangular in cross section, is formed eccentrically.
  • the driver 8 is inserted into a corresponding recess 22 of a rotary switching element 9, the rotary switching element 9 being assigned a contact bridge 10 with a plurality of contact arms 11 serving as switching contacts in a rotationally fixed manner.
  • the contact arms 11 act as fixed contacts serving resistance-coded contact tracks 12, which are formed on a printed circuit board 13 and are connected via connection contacts 14 to on-board electronics, not shown.
  • the contact arms 11 of the contact bridge 10 of the rotary switching element 9 open and close at the same time two circuits for a consumer when the rotor 7 of the locking cylinder 4 is rotated, so that it is a redundant key. Switch acts.
  • the rotary switching element 9 is guided in a hood-shaped cover 15, which is fastened on the printed circuit board 13, the end face 16 of the rotary switching element 9 facing the locking cylinder 4 being overlapped annularly by the cover 15 at the edge.
  • the cover has a base plate 17, on which fixing tabs 18 which extend over the printed circuit board 13 are formed.
  • the cover 15 is provided with a spring arm 19 pointing in the direction of the rotary switching element 9, which locks the rotary switching element 9 in the two switching positions of the key switch offset by 90 ° from one another for switching the consumer on and off. in this connection the spring arm 19 comes to rest against a raised stop 20 on the end 16 of the rotary switching element 9 facing the locking cylinder 4.
  • the opposite stops 20 each end with their end pointing in the direction of the center of the rotary switching element 9 in an annular elevation 21, on which the driver 8 of the rotor 7 of the locking cylinder 4 during assembly of the locking cylinder 4 in the housing 1 in a recess 22 of the rotary switch 9 offset position comes to rest.
  • the printed circuit board 13 equipped with two light-emitting diodes 23 is centered in position by means of two diagonally arranged centering pins 24 of the base 3.
  • the base 3 has notches 25, in each of which one of the angled connection contacts 14 lies.

Landscapes

  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Switches With Compound Operations (AREA)

Abstract

L'invention concerne un interrupteur à clé conçu pour un véhicule automobile et destiné en particulier à activer et désactiver l'airbag d'un passager. Cet interrupteur à clé comprend un cylindre de fermeture (4) disposé dans un logement (1). Le rotor (7) de ce cylindre de fermeture est relié, par l'intermédiaire d'un élément d'entraînement (8) situé côté face, à un élément d'actionnement conçu pour actionner des contacts d'interrupteur associés à des contacts fixes. Cet élément d'actionnement se présente sous la forme d'un élément d'interrupteur rotatif (9) comprenant un pont de contact (10) pourvu de plusieurs bras de contact (11). Ces derniers servent de contact d'interrupteur et coopèrent avec des voies de contact servant de contacts fixes.
EP02764550A 2001-08-24 2002-08-16 Interrupteur a cle pour un vehicule automobile Expired - Fee Related EP1419513B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10141579A DE10141579A1 (de) 2001-08-24 2001-08-24 Schlüsselschalter für ein Kraftfahrzeug
DE10141579 2001-08-24
PCT/DE2002/002993 WO2003019596A1 (fr) 2001-08-24 2002-08-16 Interrupteur a cle conçu pour un vehicule automobile

Publications (2)

Publication Number Publication Date
EP1419513A1 true EP1419513A1 (fr) 2004-05-19
EP1419513B1 EP1419513B1 (fr) 2005-01-19

Family

ID=7696521

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02764550A Expired - Fee Related EP1419513B1 (fr) 2001-08-24 2002-08-16 Interrupteur a cle pour un vehicule automobile

Country Status (4)

Country Link
US (1) US20040201274A1 (fr)
EP (1) EP1419513B1 (fr)
DE (2) DE10141579A1 (fr)
WO (1) WO2003019596A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10319191A1 (de) * 2003-04-29 2004-11-25 Robert Bosch Gmbh Schleifkontaktanordnung für eine DRehschalterbaugruppe, insbesondere für ein elektronisches Kraftfahrzeug-Zündstartschloss
DE10319192B3 (de) * 2003-04-29 2004-12-30 Robert Bosch Gmbh Drehschalterbaugruppe, insbesondere für ein elektronisches Kraftfahrzeug-Zündstartschloss
WO2008002863A2 (fr) * 2006-06-26 2008-01-03 Illinois Tool Works Inc. Ensemble de commutation à double fonction
DE102014114305A1 (de) * 2014-10-01 2016-04-07 Huf Hülsbeck & Fürst Gmbh & Co. Kg Niederstrom-Zündanlassschalter eines Sicherheitssystems eines Fahrzeuges
DE102016003981A1 (de) * 2016-04-01 2017-10-05 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Zündschloss

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3204020A1 (de) * 1982-02-05 1983-08-18 ddm hopt & schuler GmbH & Co KG, 7210 Rottweil Schluesselschalter
US5357142A (en) * 1992-05-19 1994-10-18 Yazaki Corporation Electric connection box with ignition switch
US5544914A (en) * 1994-12-27 1996-08-13 Ford Motor Company Air bag disabler control circuit
US5773774A (en) * 1996-05-02 1998-06-30 Methode Electronics, Inc. Electrical switch with omega shaped return spring
US5866954A (en) * 1996-09-05 1999-02-02 Itt Automotive, Inc. Passenger inflatable restraint control apparatus
US6122944A (en) * 1998-03-24 2000-09-26 Methode Electronics, Inc. Key operated rotary switch for disabling an automobile air bag supplemental restraint system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03019596A1 *

Also Published As

Publication number Publication date
WO2003019596A1 (fr) 2003-03-06
DE50202068D1 (de) 2005-02-24
DE10141579A1 (de) 2003-03-06
EP1419513B1 (fr) 2005-01-19
US20040201274A1 (en) 2004-10-14

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