PURPOSE: To make an antitheft device releasable only in operating a door on-off device, by interlocking a releasing device to make the antitheft device into a nonoperational state, with a door lock switch.
CONSTITUTION: A door lock switch 4 is designed to generate a signal C of 'H' in time of door closing, and this output signal is inputted into one side input terminal of an AND gate 5. Likewise, output of the door lock switch 4 is inputted into a one-shot circuit 9, and another signal D is generated in synchronous with the input signal. A rising signal detecting circuit 10 being inputted with the signal D generates a signal E after releasing the door lock switch 4. This signal E is inputted into a four-divider 6, and when the signal E is of the said 'H', the four-divider 6 is reset. Output of the four-divider 6 is so designed as to be changed over to 'L' when a rising signal is inputted twice into the input terminal whereby if the door lock is released two times within the specified time, a warning system is made so as to be released in design.
| JP2006188990 | ENGINE CONTROL DEVICE |
| JP2004145653 | SECURITY SYSTEM AND GLASS BREAKAGE DETECTION DEVICE |
ORII AKIRA
IDA SHIROU
YAMAGUCHI KENICHI
| JP57081951B | ||||
| JPS5038921U | 1975-04-22 |