Large-side lock anti-theft door having sectional bar at lateral side of door leaf lock

Abstract

The invention relates to a large-side lock anti-theft door having a sectional bar at the lateral side of a door leaf lock, comprising a door leaf containing a door leaf panel (11) and a door leaf backboard (12), wherein the door leaf is provided with a main lock (1) and a side lock (2) acting synchronously with the main lock (1); the lateral side of the door leaf lock is provided with a guide groove in which a side lock extension pole (3) of the side lock (2) is located; and a side lock strip (4) is fixed at the front end of the side lock extension pole (3). The large-side lock anti-theft door is characterized in that a U-shaped lock sectional bar (6) with two lateral wings is fixed at the lateral side of the door leaf lock; the two lateral wings of the lock sectional bar (6) are fixed onthe lateral side of the door leaf lock; the U-shaped part of the lock sectional bar (6) is placed in the guide groove, and an opening is arranged at the bottom of the U-shaped portion; the side lock extension pole (3) passes through the bottom opening of the U-shaped portion and extends into the U-shaped portion; and when the side lock extension pole (3) is displaced to the maximum, the tail partof the side lock strip (4) is always located in the U-shaped portion.

Description

1. Technical field [0001] The invention relates to an anti-theft door, in particular to a large side lock anti-theft door with profiles on the side of the door leaf lock. 2. Background technology [0002] Previously, the inventor had obtained a utility model patent for a large side lock for anti-theft doors, and its patent number was 01206404.1. A lock plate (that is, a side lock bar or a side lock bar) is installed in the guide groove, and a guide shaft is fixed on the lock plate. The guide shaft passes through the shaft hole on the door leaf and sits on the bracket. A reversing mechanism for driving the guide shaft is arranged between the lock cylinders. The large side lock of the anti-theft door enables the lock to be locked face-to-face by the lock plate, thereby greatly enhancing the anti-prying performance of the anti-theft door. However, it has been found in use that the structure of this large side lock is complicated and the cost is high. For this reason, the inv...

AI Technical Summary

Problems solved by technology

In view of the elastic deformation of the metal sheet, it is difficult to make the guide groove form a stable design required shape in the stamping process, especially after a period of use of the anti-theft door, various reasons may also cause the guide groove to deform, so that the side lock bar Constant shaking in the guide groove will eventually cause jamming, and may even cause the lock switch to fail

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