锁芯、锁具及极窄门系统

Abstract

本实用新型公开了锁芯、锁具及极窄门系统，锁芯用于平开门，其包括：锁芯壳，其一端设有斜舌口，斜舌口的一侧设有缺口；斜舌，设于锁芯壳，斜舌包括头部，头部可相对于斜舌口在伸出位置和内缩位置之间移动，头部具有第一侧和第二侧，在头部的伸出方向上，第二侧的长度小于第一侧的长度；头部设有由第一侧向第二侧倾斜设置的第一导向面；其中，第二侧设有凸块，凸块位于缺口，凸块的外侧壁设置有延伸导向面，延伸导向面和第一导向面衔接，延伸导向面和第一导向面均用于与门框或者锁盒相碰以使头部移动至内缩位置。如此，以解决在极窄门系统中因锁芯厚度受限导致斜舌导向面有效面积小，难以与门框或锁盒碰撞，以及不同门缝大小影响关门效果的问题。

Claims

1. A lock cylinder for a side hung door, characterised in that, include: The lock cylinder shell (1) has a slanted tongue (11) at one end, and a notch (111) is provided on one side of the slanted tongue (11). A latch (2) is disposed in the lock cylinder shell (1). The latch (2) includes a head (21). The head (21) is movable relative to the latch opening (11) between an extended position and an inward position. The head (21) has a first side (211) and a second side (212). In the extension direction of the head (21), the length of the second side (212) is less than the length of the first side (211). The head (21) is provided with a first guide surface (213) that is inclined from the first side (211) to the second side (212). The second side (212) is provided with a protrusion (214), which is located in the notch (111). The outer side wall of the protrusion (214) is provided with an extension guide surface (215), which is connected to the first guide surface (213). Both the extension guide surface (215) and the first guide surface (213) are used to collide with the door frame or lock box to move the head (21) to the retracted position.

2. The lock cylinder of claim 1, wherein, The side plate of the lock cylinder shell (1) is provided with a guide groove (12), the guide groove (12) and the notch (111) are connected, and the protrusion (214) and the guide groove (12) are slidably connected.

3. The lock cylinder of claim 1, wherein, Both the first guide surface (213) and the extended guide surface (215) are guide arc surfaces.

4. The lock cylinder of claim 1, wherein, The direction from the first side (211) to the second side (212) is defined as the thickness direction, which is perpendicular to the extension direction of the head (21); the length of the head (21) in the thickness direction is defined as L1, and the length of the protrusion (214) in the thickness direction is defined as L2. Then L2 and L1 satisfy: 0.1L1≤L2≤0.5L1.

5. The lock cylinder of claim 1, wherein, The oblique tongue (11) is provided with a limiting flange (13) on its periphery, which is used to abut against the vertical side wall of the door body, and the notch (111) is provided on the limiting flange (13).

6. The lock cylinder of claim 1, wherein, The head (21) moves back and forth in a straight line along the first direction. The head (21) has an abutting plane (216) perpendicular to the first direction. A chamfer structure (217) is provided between the first guide surface (213) and the abutting plane (216).

7. The lock cylinder of claim 1, wherein, Both the first guide surface (213) and the extended guide surface (215) are provided with guide ribs (218).

8. The lock cylinder according to any one of claims 1-7, characterized in that The lock cylinder also includes an elastic element (4), which is disposed on the lock cylinder shell (1). The elastic element (4) is used to elastically drive the latch (2) so that the head (21) returns to the extended position.

9. A lock, characterized by The lock cylinder includes any one of claims 1-8, and also includes a lock box for mounting on a door frame. The lock box has a lock groove, and the head (21) engages with the lock groove when it is in the extended position and separates from the lock groove when it is in the retracted position.

10. A very narrow gate system, characterized by The lock as described in claim 9 includes a door frame and a door body, wherein the door body is rotatably disposed on the first side (211) of the door frame via a hinge structure, the lock box is disposed on the second side (212) of the door frame, and the lock cylinder shell (1) is disposed on the door body.

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