| 摘要 |
Closing apparatus for a door member mounted for movement along a guide track, includes a spring (25) effective to cause closing moving of the door member, the spring (25) being provided in a rotor (16) coupled to the door by a belt (13) engaging the periphery of the rotor (16), to be rotated upon movement of the door member, and restraint means (35) to restrict the closing speed of the door member. The apparatus further includes a clutch group (37) comprising a friction clutch (39) and an electromagnetically controllable clutch (38) in series therewith respectively to provide a slip action if the door is manually pushed shut and a holding action in any opened position of the door. The clutch group (37) is connected to the rotor (16) by way of freewheel means (29) and a chain (52). <IMAGE> |
