公开(公告)号：US3798938A

公开(公告)日：1974-03-26

申请号：US33775573

申请日：1973-03-02

申请人： BEST LOCK CORP

发明人： MC CULLUM R

IPC分类号： B62D53/08 ,  E05B73/00 ,  E05B65/12 ,  B60R25/00

CPC分类号： B62D53/085 ,  E05B73/00 ,  Y10S70/09 ,  Y10T70/5637 ,  Y10T70/5867 ,  Y10T70/7921 ,  Y10T292/0867

摘要： A protective housing is locked onto the fifth-wheel king pin of a tractor-trailer connection to prevent its being engaged by an unauthorized tractor. A housing ring closely encircles the king pin and carries a projecting lock body housing a cylindrical latch bolt spring pressed into engagement with the king pin groove. The latch bolt is rotated to release position by a keyactuated lock cylinder having its key-entrance face presented at the front face of the lock body. An armor shield having a lockinsertion opening is welded in spaced relation to that face to define a slot to receive a guard plate which is inserted across the lock-insertion opening after a lock cylinder and core have been inserted. The guard plate carries a rotatable, key-slotted disk in an opening coaxial with the key plug of the lock, which protects the key plug from drilling and from forceful withdrawal by a pulling tool. The guard plate is removably locked in place by a ball in a hole across the body-plate interface, held therein by a dowel and set screw in a hole which opens to the end face of the lock body and is concealed by the fifth wheel bearing pad on the trailer when the locking device is in place.

摘要翻译： 一个保护壳锁定在拖拉机 - 拖车连接的五轮主销上，以防止被未经授权的拖拉机接合。 壳体环紧密地围绕主销并且承载突出的锁定体，该锁定体容纳与主销凹槽接合的圆柱形闩锁弹簧。 锁定螺栓旋转以通过其钥匙入口面呈现在锁体的前表面处的钥匙致动锁芯旋转释放位置。 具有锁定插入开口的防护罩与该表面间隔开地被焊接，以限定一个槽，以容纳防护板，该防护板在锁芯和芯已插入之后插入穿过锁定插入口。 防护板在与锁的钥匙插头同轴的开口中携带可旋转的钥匙槽盘，该钥匙保护钥匙插头不被钻孔和通过牵引工具的强力撤回。 防护板通过球体在主体板接口上的一个孔中可拆卸地锁定在适当的位置，通过定位销和定位螺钉保持在一个孔中，该孔通向锁体的端面，并被第五轮轴承 当锁定装置就位时，拖车上的垫片。