EP0167636B1 - Dispositif interrupteur à clef du type à auto-rétention - Google Patents

Dispositif interrupteur à clef du type à auto-rétention Download PDF

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Publication number
EP0167636B1
EP0167636B1 EP19840105010 EP84105010A EP0167636B1 EP 0167636 B1 EP0167636 B1 EP 0167636B1 EP 19840105010 EP19840105010 EP 19840105010 EP 84105010 A EP84105010 A EP 84105010A EP 0167636 B1 EP0167636 B1 EP 0167636B1
Authority
EP
European Patent Office
Prior art keywords
cam
key
switch
cylinder
peripheral side
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
Application number
EP19840105010
Other languages
German (de)
English (en)
Other versions
EP0167636A1 (fr
Inventor
Tetsuo Takahashi
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.)
Takigen Manufacturing Co Ltd
Original Assignee
Takigen Manufacturing Co 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 Takigen Manufacturing Co Ltd filed Critical Takigen Manufacturing Co Ltd
Priority to EP19840105010 priority Critical patent/EP0167636B1/fr
Priority to DE8484105010T priority patent/DE3467464D1/de
Publication of EP0167636A1 publication Critical patent/EP0167636A1/fr
Application granted granted Critical
Publication of EP0167636B1 publication Critical patent/EP0167636B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • H01H19/02—Details
    • H01H19/10—Movable parts; Contacts mounted thereon
    • H01H19/28—Driving mechanisms allowing angular displacement of the operating part to be effective or possible in only one direction
    • 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

Definitions

  • the invention relates to a self-holding key switch, wherein a switch is combined with a lock adapted to be released by inserting a key and the switch is turned on or off by rotating the inserted key.
  • a rotor or rotatable cylinder of a lock main body is rotated by means of a key inserted into the cylinder, and a microswitch fitted to the rear of the lock main body is turned on and off by a cylindrical cam that rotates integrally with the cylinder.
  • the cylinder and the cam being freely rotatable in both directions by means of the key, accidental or unintentional rotation of the inserted key by an operator can lead to the switch being turned on or off, there being no necessity of rotating the key up to 360° in order to turn of the switch.
  • the switch can return to the off state easily within a short period of time.
  • the document DE-B-1 131 464 describes a key-operated combined ignition and starter switch for an engine of a motor vehicle, the switch having the features described in the prior art portion of claim 1. Insertion of a key into a cylinder lock and rotation of the key in one direction brings a rotary switch from an off position into an ignition position and then into an engine starting position, at which stage a spring mechanism rotates the cylinder in the reverse direction to bring the switch back to the ignition position.
  • a separate ratchet mechanism In order to prevent the switch from being inadvertently rotated a second time to the starting position before being first returned to the off position, a separate ratchet mechanism is provided, wherein two cam discs are fitted coaxially onto a rear extension of the lock cylinder, the rear cam disc being rotated integrally with the cylinder and the front cam disc being free to rotate with respect to the cylinder and the rear cam disc within a limited angular range.
  • two spring-loaded pawls pivotally supported at the lock main body, each engage with one of two slight recesses formed on opposite perimeter portions of the front cam disc.
  • Rotation of the cylinder to the ignition and engine starting positions first allows only the rear cam disc to rotate, whereafter the front cam disc is constrained to rotate in the same direction, the pawls being slid out of the slight recesses and then dropping into cutout portions of the perimeter of the front cam disc to abut against the perimeter of the rear cam disc.
  • the subsequent spring-urged return of the cylinder to the ignition position causes the rear cam disc to rotate and one of the pawls to engage immediately with a tooth of the rear cam disc, so as to block a return of the cylinder to the starting position.
  • the invention resides in that a pawl 6 is disposed sideways of a switch operating cam 5 for a switch 2 and is urged to rotate towards the peripheral side surface 5a of the cam 5, and a tooth 7 for meshing with the tip of the pawl 6 is disposed on the peripheral side surface 5a of the cam 5, so that reverse rotation of the cam 5 is prevented by the engagement of the pawl 6 with the tooth 7 when the switch 2 is turned on by rotation of the cam 5 in the normal operating direction.
  • a fitting base plate 8 is fixedly mounted to the rear of a lock main body 1 by a screw 9, and the microswitch type switch 2 is fixed to the fitting base plate 8 by a rear seat plate 10 in cooperation with a nut 11.
  • the front end portion of an interlocking plate 13 is slidably inserted into the rear end portion of a key groove 12 formed in a lock cylinder 3 in its axial direction, and the rear - end portion of this interlocking plate 13 is fitted into a split groove 14 of the cylindrical cam 5 that extends in the radial direction of the cam 5.
  • the rear end portion of the interlocking plate 13 is fixed to the cam 5 by a spring pin 15.
  • a compression spring 17 and a small ball 18 are disposed in a centre through-hole 16 of the cam 5.
  • the front end portion of the compression spring is in pressure contact with the interlocking plate 13, and the small ball 18 is in pressure contact with a receiving hole 19 that is disposed on the rear seat plate 10. Accordingly, the cam 5 is urged to slide towards the rear surface of the lock main body 1.
  • the switch 2 is adapted to be turned on and off by engagement with the suitably formed peripheral side surface 5a of the cam 5.
  • a step portion 21 is formed into which an actuator 20 of the switch 2 fits.
  • the switch 2 is kept off.
  • the tooth 7 described above is formed at a portion of the peripheral side surface 5a of the cam 5 with which the actuator 20 does not come into sliding contact, that is, at the front end portion of the peripheral side surface 5a of the cam 5.
  • the base end portion of the pawl 6 is rotatably fitted to a bolt 22 which is interposed between the fitting base plate 8 and the rear seat plate 10.
  • One of the ends of the pawl 6 is thus anchored to the fitting base plate 8, with the other being urged to rotate towards the peripheral side surface 5a of the cam 5 by a twist coil spring 23 which is in contact with a side surface at the tip of the pawl 6.
  • a spacer cylinder 24 is fitted onto the portion of the bolt 22 between the pawl 6 and the rear seat plate 10. Locking of the cylinder 3 to the lock main body 1 is effected by use of a known disc tumbler mechanism, pin tumbler mechanism, or the like. This embodiment employs the pin tumbler mechanism.
  • a follower pin 27 and a driving pin 28 disposed in pin receiving holes 25, 26 in the radial direction of the cylinder 3 and the lock main body 1, respectively, are urged to slide by a compression spring 29 in the axial direction of the cylinder 3.
  • the present invention guides or forces the operator to fully rotate the cam 5 to 360° because of a ratchet mechanism that includes the pawl 6 and the tooth 7.
  • the switch 2 is reliably kept in the ON state from the position P 1 to the position P 2 in Figure 1 for a predetermined period of time required for equipment with which the key switch is used.

Landscapes

  • Lock And Its Accessories (AREA)
  • Mechanisms For Operating Contacts (AREA)

Claims (3)

1. Un interrupteur à clé à auto-maintien équipé
-d'un corps principal de verrou comportant un cylindre tournant (3) agencé pour être déverrouillé par rapport au corps principal de verrou (1) par l'insertion d'un clé (4) dans une rainure de clé (14) du cylindre (3) et pour être tourné au moyen de la clé (4), une plaque de base (8) de montage étant montée à l'arrière du corps principal de verrou (1),
-un interrupteur (2) fixé à l'arrière du corps principal de verrou (1) et agencé pour être mis en position fermée et en position ouverte par rotation du cylindre (3),
-une came (5) agencée pour tourner solidairement avec le cylindre tournant (3) et présentant une dent (7) formée sur sa surface latérale périphérique (5a), et
-un cliquet (6) disposé sur le côté de la came (5), l'une des extrémités du cliquet (6) étant montée à rotation sur la plaque de base (8) de montage et l'autre étant sollicitée pour basculer contre la surface latérale périphérique (5a) de la came (5) par un ressort (23), la dent (7) de la came (5) étant agencée pour coopérer avec le cliquet (6) pour une position prédéterminée de l'interrupteur quand la came (5) tourne dans le sens normal de fonctionnement et étant formée de telle manière qu'une rotation de la came (5) en sens inverse est empêchée par la coopération du cliquet (6) avec la dent (7),1
caractérisé en ce que
-la came (5) est une came (5) d'actionnement de l'interrupteur présentant une partie en gradin (21) dans laquelle s'adapte un élément d'actionnement (20) de l'interrupteur (2), la partie en gradin (21) est formée sur la surface latérale périphérique (5a) de la came (5), l'interrupteur (2) étant maintenu ouvert quand l'élément d'actionnement (20) est placé dans la partie la plus intérieure de la surface de fond (21 a) de la partie en gradin (21),
-la dent (7) est formée à la partie extrême avant de la surface latérale périphérique (5a) de la came (5) avec laquelle l'élément d'actionnement (20) ne vient pas en contact de glissement, l'agencement étant tel que
-quand la clé (4) est insérée dans la rainure de été (12) et que le cylindre (3) est tourné dans le sens normal de fonctionnement, la came (5) étant tournée dans le même sens, l'extrémité du cliquet (6) vient séquentiellement en contact de glissement avec des surfaces inclinées (7a, 7b, 7c) de la dent (7), puis avec la surface latérale périphérique (5a) de la came (5) et, quand le cliquet (6) traverse la partie de la dent (7), l'élément d'actionnement (20) est poussé par la surface de fond (21a) de la partie en gradin (21), de sortie que l'interrupteur (2) se ferme, et
-l'interrupteur (2) est maintenu fermé quand l'élément d'actionnement (20) vient en contact de glissement avec la surface latérale périphérique (5a) de la came (5) et jusqu'à ce que le cylindre (3) ait été tourné dans le sens normal de fonctionnement presque jusqu'à la position pour laquelle la clé (4) peut être retirée du cylindre (3) quand l'élément d'actionnement (20) tombe dans la partie en gradin (21) de la surface latérale périphérique (5a) de la came (5), de sorte que l'interrupteur (2) s'ouvre.
2. Un interrupteur à clé à auto-maintien selon la revendication 1, caractérisé en ce que la partie extrême avant d'une plaque d'interverrouillage (13) est insérée de manière coulissante dans la partie extrême arrière de la rainure de clé (12) du cylindre (3) et la partie extrême arrière de la plaque d'interverrouillage (13) est adaptée dans une gorge fendu (14) de la came cylindrique (5) s'étendant dans la direction radiale de la came (5) et est fixée à la came (5), la partie extrême avant d'un ressort de compression (17) étant en contact de pression avec la plaque d'interverrouillage (13), de sorte que la plaque d'interverrouillage (13) est sollicitée à glisser vers la surface arrière du corps principal de verrou (1) et, lorsque la clé (4) est insérée dans la rainure de clé (12) et poussée dans la direction axiale du cylindre (3), la plaque d'interverrouillage (13) et la came (5) sont poussées par l'extrémité (4a) de la clé (4) et se déplacent vers l'arrière et, lorsque le cylindre (3) est à nouveau tourné dans le sens normal de fonctionnement par la clé (4), la plaque d'interver- rouillage (13) et la came (5) suivent la rotation.
EP19840105010 1984-05-04 1984-05-04 Dispositif interrupteur à clef du type à auto-rétention Expired EP0167636B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19840105010 EP0167636B1 (fr) 1984-05-04 1984-05-04 Dispositif interrupteur à clef du type à auto-rétention
DE8484105010T DE3467464D1 (en) 1984-05-04 1984-05-04 Self-holding type key switch device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19840105010 EP0167636B1 (fr) 1984-05-04 1984-05-04 Dispositif interrupteur à clef du type à auto-rétention

Publications (2)

Publication Number Publication Date
EP0167636A1 EP0167636A1 (fr) 1986-01-15
EP0167636B1 true EP0167636B1 (fr) 1987-11-11

Family

ID=8191921

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840105010 Expired EP0167636B1 (fr) 1984-05-04 1984-05-04 Dispositif interrupteur à clef du type à auto-rétention

Country Status (2)

Country Link
EP (1) EP0167636B1 (fr)
DE (1) DE3467464D1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9121191D0 (en) * 1991-10-05 1991-11-20 Garner John G Lockable electric socket
CN115719687A (zh) * 2022-12-05 2023-02-28 中车株洲电力机车有限公司 一种模块化机车司机控制器电钥匙机构

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1131465B (de) * 1960-07-09 1962-06-14 Leopold Kostal Elektrotechn Sp Vereinigter Zuend- und Anlassschalter
DE1240160B (de) * 1964-07-27 1967-05-11 Anders Elektronic G M B H Mehrfachbetaetigungseinrichtung
DE2208019C3 (de) * 1972-02-21 1974-09-19 Fritz Richard 5021 Esch Baumgart Schlüsselschalter
DE2403995A1 (de) * 1974-01-29 1975-08-07 Fritz Richard Baumgart Schluesselschalter
JPS56130041A (en) * 1980-03-15 1981-10-12 Matsushita Electric Works Ltd Relay driving circuit

Also Published As

Publication number Publication date
EP0167636A1 (fr) 1986-01-15
DE3467464D1 (en) 1987-12-17

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