| 摘要 |
<p>900,432. Vehicle door latches. GENERAL MOTORS CORPORATION. April 5, 1961 [April 20, 1960], No. 12154/61. Class 44. A vehicle door latch comprises a rotatable bolt 66 having ratchet teeth 82 on its end face-plate 80 which co-operate with ratchetteeth 91 on a non-rotatable detent 68 which is mounted on a shaft 72 to be axially slidable of the bolt. The bolt rotates on the end 74 of the shaft 72 and the detent is fixed to this shaft by a pin 86 engaging a slot 90. Arms 138a, 138b locate the detent in the casing 58 and a spring 95 normally holds the detent in engagement with the bolt. A release for the detent comprises a cup-shaped part 94 rotatably mounted on the part 89 of the detent and having openings with cam surfaces 106c and 106d which engage the pin 86 so that when the release member is rotated by a rack 110 engaging teeth 100 on the release member, the pin 86 slides along the cam surfaces whereby the detent is pulled axially away from the bolt, thus releasing it. The rack 110 is operated by a push-button engaging the crank 114 and a lock is incorporated whereby the rack is turned about its axis out of engagement with the teeth 100, thus locking the door. The rack may also be turned by a push-button inside the door-operating crank 118. The inside door handle is connected to a lever arm 136 having a pivot 132 and arms 134a, 134b which engage arms 138a, 138b of the detent to move it axially to effect release of the bolt. The detent has a projection 122 which engages a projection 117 on the rack, when the detent is moved, thus turning the rack into operative position when the detent is moved' either by the inside door handle or by the bolt being turned upon closing of the door. The rack may be left in the inoperative position when the door is closed if the push-button is depressed, thus moving projection 117 out' of alignment with projection 122. A spring- biased slidable shoe 64 bears against the lower surface of the striker bar 54 when the door is closed to prevent the door moving up and down.</p> |
