| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve security by providing a receiving device with answerback function for informing the execution of locking action, and signal verifying function for unlocking only at the time of receiving conscious signals twice within the fixed time or continuously. SOLUTION: A receiving device 5 of a vehicle is provided with answerback function so as to inform execution of locking action by a horn 10 only at the time of receiving unlock signals from a portable transmitter 1 of a driver twice within the fixed time or continuously for the set time or longer. A signal verifying device puts lock mechanism 8 in unlocking action only at the time of receiving unlock signals twice within the fixed time or continuously for the set time or longer in the acting state of the answerback function. Timer lock mechanism 8 puts the lock mechanism in locking action when operation related to driving is not performed within the set time after unlock. The lock mechanism is thereby operated only when the driver transmits the unlock signal consciously so as to prevent door opening caused by misopertion or unrighteous unlock.</p> |
