| 摘要 |
<p>A control assembly for a roller blind, the assembly including a chain wheel (4) adapted to be driven by an operating chain; a drive bush (6); and a locking pin (10), wherein at least one of the chain wheel (4) and drive bush (6) includes a coupling element (38) which in use couples the chain wheel (4) to the drive bush (6) such that axial displacement of the drive bush (6) results in a corresponding axial displacement of the chain wheel (4), but that relative rotational displacement between the chain wheel (4) and the drive bush (6) is permitted through an arc (22) defined between a pair of opposed stops which are carried by the other of the chain wheel (4) and the drive bush (6); and wherein the locking pin (10) passes axially through the chain wheel (4) and the drive bush (6), the locking pin (10) including at one end thereof a pair of opposed legs (56, 58) and at least one leg (56, 58) includes a locking lug (60, 62) adapted to engage a stop surface of the drive bush (6).</p> |
