Title:
CAR THEFT PREVENTIVE DEVICE
Document Type and Number:
Japanese Patent JPS62289454
Kind Code:
A
Abstract:
PURPOSE:To keep alarm condition for unfair unlocking certainly by admitting release of alert condition of a theft alarm means only when it is sensed that a key equipped with a regular password magnetic member is inserted in a door cylinder lock. CONSTITUTION: A key sensing device 3 is to sense that a key 26 equipped with a regular password magnetic member is inserted in doors 25a, 25b on the driver side and assistant side. That is, said key sensing device 3 consists of a yoke 29 installed in a case 28 outside a door cylinder lock 27, a magnet 30 inside one end of the yoke 29, a hole element 31 inside the other end, and am amplifier circuit 32 outside the other end, Accordingly the magnet 30 generates flux threading a key hole 27a in the door cylinder lock 27, and said hole element 31 senses change of the flux changed by magnetic member 36 provided at the key 26. Then output is made from the amplifier circuit 32. The alert condition is released when this output lies within the set range.
More Like This:
Inventors:
FUKAMACHI MASAAKI
ONITSUKA NOBUYUKI
ONITSUKA NOBUYUKI
Application Number:
JP5326987A
Publication Date:
December 16, 1987
Filing Date:
March 09, 1987
Export Citation:
Assignee:
HONDA LOCK MFG CO LTD
International Classes:
E05B45/06; B60J5/00; B60J5/04; B60R25/10; B60R25/20; B60R25/34; G08B13/00; (IPC1-7): B60J5/04; B60R25/10; E05B45/06; G08B13/00
Domestic Patent References:
| JPS6050052A | 1985-03-19 | |||
| JPS60206754A | 1985-10-18 |
Attorney, Agent or Firm:
Toshihiko Watanabe
Previous Patent: METHOD DEVICE FOR FORCED STOPPING OF ESCAPING CAR
Next Patent: CAR WIPER DRIVING DEVICE
Next Patent: CAR WIPER DRIVING DEVICE