Title:
DOOR LOCK RELEASING DEVICE
Document Type and Number:
Japanese Patent JP3107421
Kind Code:
B2
Abstract:
PURPOSE: To prevent the lock of a door from being released by an illegal means.
CONSTITUTION: A manual operation system releasing the lock of a lock system when the rotor of a key cylinder is rotated is provided. A coupling member 21 made of a plate spring and coupled/uncoupled with a shaft 19 connected to an upper rod 14 is provided on a cover case 18 fitted to the case 17 of the lower rod 15 of the manual operation system, and a plunger 26 reciprocated by an electromagnet 25 for expanding/shrinking the coupling member 21 is provided to constitute an inhibit system 16. When a door is locked, the coupling member 21 is expanded by the plunger 26, and it is uncoupled with the shaft 19 in the cutoff state. When a specific radio signal is sent from a transmitter, the plunger 26 is moved downward by a code judging circuit decoding the radio signal, thus the coupling member 21 is shrunk and coupled with the shaft 19 in the connection state, and the upper rod 14 and the lower rod 15 are connected.
Inventors:
Sadao Kokubun
Hisashi Aoki
Yoshiyuki Mizuno
Hisashi Aoki
Yoshiyuki Mizuno
Application Number:
JP23415091A
Publication Date:
November 06, 2000
Filing Date:
August 20, 1991
Export Citation:
Assignee:
Tokai Rika Electric Co., Ltd.
International Classes:
B60J5/04; E05B49/00; E05B77/44; E05B79/08; E05B79/14; E05B79/22; E05B81/90; E05B83/36; H02K7/14; (IPC1-7): E05B65/20; E05B49/00; H02K7/14
Domestic Patent References:
| JP63201282A | ||||
| JP6432946A | ||||
| JP1234613A | ||||
| JP61237778A | ||||
| JP63184676A |
Attorney, Agent or Firm:
Tsuyoshi Sato
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