| 摘要 |
A mechanically operated lock which can operated by electrical control. The lock comprises a door handle rotatable door handle spindle (1) and a turn-knob or door handle rotatable turn spindle (2). The lock comprises a housing mountable or a door inner surface, into which said spindles (1, 2) extend. A mechanism (40) interconnects the spindles (1, 2) and is capable of engaging, by way of an electric control (5, 6, 7), the spindles (1, 2) with each other for a relative mechanical drive link, such that a rotation of the door handle spindle (1) translates into a rotational motion of the turn spindle (2) as well. The drive link (40) is adapted to decouple either automatically after a delay time or as the lock is opened by pressing the door handle. A piezoelectric actuator (20, 22, 23, 25, 26, 27), in a mode activated by an electrical control (5, 24), is adapted to immovably lock a bolt or plunger (27) which, in its immovably locked condition, couples said drive link as the door handle spindle (1) is rotated. Without the electrical control of the piezoelectric actuator, the bolt or plunger (27) is adapted, by yielding to the weak returning force of a spring (23), to disable or not to activate a coupling of the drive link as the door handle spindle (1) is rotated.
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