公开(公告)号：EP0354634A2

公开(公告)日：1990-02-14

申请号：EP89301977.8

申请日：1989-02-28

申请人： Middleton, Colin Sidney

发明人： Middleton, Colin Sidney

IPC分类号： E05B15/04

CPC分类号： E05B15/04 ,  E05B59/00 ,  E05B2015/0413

摘要： A mortice latch which largely overcomes the problems of wear and breakdown in operation comprises a casing consisting of a top case (2) and a bottom case (1); a latch bolt assembly reciprocally mounted in the casing and comprising a bolt head (7), a bolt lathe (8) and a bolt end-stop (9); a latch bolt follower (23), pivotally mounted in the casing, and a return spring (33). The follower (23) has a first curved arm (25) provided at its end with an arcuate surface (26) which is engage­able with the latch bolt end-stop (9) and a second curved arm (28) which is provided with a cylindrical socket (29). A roller (31) is freely pivotally mounted in the socket (29) and the return spring (33) is mounted on a shaft (32) which extends from the roller (31). The shaft (32) extends through an aperture in a strip (17) projecting from the bottom case (1) and one end of the spring (33), which takes the form of a coil spring, bears against the strip (17) while the other end of the spring bears against a stop (34) on the shaft (32). The engagement of the roller (31) in the socket (29) of the follower provides a ball and socket type action and is such that very little wear takes place and any that does is fully compensated. The latch bolt can still be operated even in the event of failure of the return spring (33). A dead bolt assembly may also be fitted to the mortice latch if desired.

摘要翻译： 主要克服了操作中磨损和故障的问题的榫眼闩包括由顶壳（2）和底壳（1）组成的壳体; 闩锁螺栓组件相互安装在壳体中并且包括螺栓头部（7），螺栓车床（8）和螺栓端部止动件（9）; 枢转地安装在壳体中的闩锁螺栓从动件（23）和复位弹簧（33）。 从动件（23）具有第一弯曲臂（25），该第一弯曲臂（25）在其端部设有与闩锁螺栓端部止动件（9）可接合的弓形表面（26）和第二弯曲臂（28） 圆柱形插座（29）。 辊子（31）可自由转动地安装在插座（29）中，复位弹簧（33）安装在从辊子（31）延伸的轴（32）上。 轴（32）延伸穿过从底壳（1）突出的带（17）中的孔，并且呈螺旋弹簧形式的弹簧（33）的一端承载在带（17）上，同时 弹簧的另一端靠在轴（32）上的止动件（34）上。 滚子（31）在跟随器的插座（29）中的接合提供了球窝式动作，并且使得很少发生磨损，并且完全补偿了这一点。 即使在复位弹簧（33）发生故障的情况下，闩锁螺栓仍然可以被操作。 如果需要，死栓组件也可以安装到榫眼闩锁上。

公开(公告)号：EP0354634B1

公开(公告)日：1994-08-24

申请号：EP89301977.8

申请日：1989-02-28

申请人： Middleton, Colin Sidney

发明人： Middleton, Colin Sidney

IPC分类号： E05B15/04

CPC分类号： E05B15/04 ,  E05B59/00 ,  E05B2015/0413

公开(公告)号：EP0354634A3

公开(公告)日：1990-10-17

申请号：EP89301977.8

申请日：1989-02-28

申请人： Middleton, Colin Sidney

发明人： Middleton, Colin Sidney

IPC分类号： E05B15/04

CPC分类号： E05B15/04 ,  E05B59/00 ,  E05B2015/0413

摘要： A mortice latch which largely overcomes the problems of wear and breakdown in operation comprises a casing consisting of a top case (2) and a bottom case (1); a latch bolt assembly reciprocally mounted in the casing and comprising a bolt head (7), a bolt lathe (8) and a bolt end-stop (9); a latch bolt follower (23), pivotally mounted in the casing, and a return spring (33). The follower (23) has a first curved arm (25) provided at its end with an arcuate surface (26) which is engage­able with the latch bolt end-stop (9) and a second curved arm (28) which is provided with a cylindrical socket (29). A roller (31) is freely pivotally mounted in the socket (29) and the return spring (33) is mounted on a shaft (32) which extends from the roller (31). The shaft (32) extends through an aperture in a strip (17) projecting from the bottom case (1) and one end of the spring (33), which takes the form of a coil spring, bears against the strip (17) while the other end of the spring bears against a stop (34) on the shaft (32). The engagement of the roller (31) in the socket (29) of the follower provides a ball and socket type action and is such that very little wear takes place and any that does is fully compensated. The latch bolt can still be operated even in the event of failure of the return spring (33). A dead bolt assembly may also be fitted to the mortice latch if desired.