| 摘要 |
This bolt comprises a casing 1, a lock bolt 4, mounted so as to slide in the casing, a grip 2 mounted so as to pivot about a transverse axle 11 fixed to the front part and upper part of the casing, a tilting device 3 articulated into the grip and provided with hooks 20 engaging under a transverse rod 8 in order to block the bolt in the closed position, a tumbler 5 fixed to the lock bolt 4 and having, on each side of the lock bolt a transverse slideway in which there moves a roller 22 connected to the grip, which, by means of the two rollers 22, commands the longitudinal sliding of the lock bolt connected to the tumbler, the slideways having, at the top of their rear face, a cavity into which the rollers penetrate and are wedged in completely open position of the bolt. A coil spring 7 slipped over the axle 11 and a specific shape of the slideways of the tumbler 5 make it possible, when the tilting device 3 is actuated for unblocking the bolt, to obtain a preliminary partial opening of the grip 2 without any movement of the lock bolt 4. <IMAGE>
|
