| 摘要 |
<p>PURPOSE: To display locking and unlocking conditions at a desired position, and memorize the conditions with age, by generating electric recording signals every lock operations in a locking device which can be operated from the outside and the inside. CONSTITUTION: A door 1 is provided with inner and outer attaching metal fittings 2, 3, and a lock 5 is arranged between the attaching metal fittings 2, 3 to perform operation with an outside knob 6 and an inside operating knob 9. Switch disks 19, 19a and switches S1, S2 are annexed to the locking device. Whenever the outside knob 6 is operated, an electric signal is generated in association with a first switch disk 19 and the switch S1. Moreover, whenever the operating knob 9 is operated, the other electric signal is generated in association with a second switch disk 19a and the switch S2. These electric signals are conducted to a display means to display locking and unlocking conditions, and are conducted to a storage means to sequentially memorize a condition accompanied by the passage of time.</p> |
