| 摘要 |
The attachment (1 or 1') of the invention has an automatic mechanism arranged in a knot, consisting of a spring roller holder (2 or 2'), a left-hand control lever (9 or 9') and a right-hand control lever (10 or 10') with a release spring (11 or 11'), a spring roller (24 or 24') and a neckband ( 3 or 3'). These components are fitted together by a plug-in assembly which, in one embodiment, is done with the aid of a fixed spindle (21) and pins (17a, 17b) provided on as lower part (18) of the spring roller holder (2) and on which said components can be fitted and then covered by an upper part (7). In another embodiment these components are assembled by a push-in steel spindle (43) together with a fixed spindle (21') arranged on a base member (42). |
