| 摘要 |
<p>A flap is retractable into, and extensible out of, an applicance, and movable only in the latterposition. The appliance's sides have a mechanical housing (3) containing three rollers (4-6), the third being on a swivelling hinge lever (8) which has a bolt (9) supporting a spring (13), on another bolt (12), located on a guide-rail (11) swivelling about a roller axis. A draw cable (25) round the rollers is fastened to a unit (15) sliding in the rail, and to a latch (21) with lug (23) locking in a rail recess (24), when the flap (16) is closed. A stop lever (18), hinged to the rail, turns in the housing, where it enters an exit hole when the appliance is extended. This is inexpensive and allows the flap to swivel regardless of slide position.</p> |
