| 摘要 |
PURPOSE:To fabricate a door locking means of required performance stably at a low cost by coupling a member to be restrained with the output shaft of a motor, and furnishing a solenoid to hinder rotation of the member restrained when effective condition is generated. CONSTITUTION:When a solenoid 2b of a door locking means 18 is put in the condition where a plunger is protruding (i.e., effective condition), the plunger 30 protrudes against the action of the magnetic attraction force of a permanent magnet 38. As a result, the tip of a restraining rod 40 is detained with one of the detent notches formed at the periphery of a member to be restrained 20, and its rotation is restrained by the restraining rod 40. The effect of this restraint is applied to a belt mechanism through a damping mechanism 16, and the door is locked in place with no possibility of movement. Thus the door locking means can be fabricated at a low cost. |
