Security door with internally-mounted padlock

Abstract

The invention relates to a security door with an internally-mounted padlock. Forked door bolts are respectively arranged on the upper side, the lower side as well as the left side and the right side of an inner cavity of a door leaf; a straight bar of each forked door bolt is sleeved with an offsetting spring, and is sleeved in a guide bearing seat in a penetration mode; two pins of each forked door bolt are sleeved in side wall bolt hole of the door leaf respectively in a penetration mode; a rotary plate bracket is arranged at the left-of-center position of the door leaf; one end of a connecting bar is articulated with a straight bar of each forked door bolt, and the other end of the connecting bar is articulated with a rotary plate; a rotary handle is fastened on the outer end of a central shaft of the rotary plate penetrating through a bracket panel; the end part of the rotary handle is provided with a lock hole for hanging of a padlock; the middle part of the right side of the bracket panel is fixedly provided with a baffle ring matched with the lock hole; the middle part of the rotary handle is provided with a movable pin, and a clamping hole matched with the movable pin is arranged on the bracket panel; and the upper-center position of the door leaf is provided with an arm access hole. The security door with the internally-mounted padlock not only can prevent a door from being opened by a stealer with a technical unlocking method, but also has a simple structure and is low in manufacture cost, and is beneficial to popularization and application.

Description

technical field

[0001] The invention relates to an accessory device of a building, especially an access control device for personnel entering and exiting. Background technique

[0002] The security of an anti-theft door depends on the performance of the door lock it uses. Although the existing various mechanical door locks are simple in structure, sturdy and durable, low in manufacturing cost, and easy to install, their anti-theft performance is poor, and their lock cylinders are easy to be twisted by thieves with technical unlocking methods, thereby easily opening the door. That is to say, the anti-theft door using the mechanical door lock has no safety at all. It can only prevent gentlemen, but not villains.

[0003] In recent years, some anti-theft doors use electronic password door locks or electronic door locks that can recognize fingerprints and pupils. Although they can effectively prevent thieves from using technical unlocking methods to open the door, the manufactu...

Examples

Embodiment 1

[0018] As shown in the figure, the present invention includes a door frame 3, a door leaf 1 and a common door lock 10, and is characterized in that the upper, lower, left and right sides of the inner cavity of the door leaf 1 have a fork-shaped door frame 4 and a fork-shaped door bolt 4 respectively. The straight bar 41 is covered with a return spring 5 and is threaded in the guide support seat 6. The guide support seat 6 is fastened on the back of the panel of the door leaf 1, and the two pins 42 of the fork-shaped bolt are respectively threaded on the door leaf 1. In the sidewall bolt holes, there are latch hole slots 31 matched with the bolt pins on the corresponding sides of the door frame 3; a turntable bracket consisting of a bracket bottom plate 7 and a bracket panel 8 is installed on the left side of the center of the door leaf 1, and the turntable 9 The two ends of the central shaft are respectively inserted in the central holes of the support bottom plate 7 and the su...

Embodiment 2

[0021] The present embodiment is basically the same as example one, except that the cylindrical plug cover with an aesthetic effect on the door leaf 1 panel is embedded in the arm and extends into the hole 12. When needing to open the door, as long as the plug cover is taken off first.

Embodiment 3

[0023] The present embodiment is basically the same as Example 1, except that the door leaf 1 panel has a lid lock with an automatic locking device on the arm and extends into the hole 12 . The structure of the trunk lid lock is identical with the existing trunk lid lock. When the cover plate of the lid lock was pressed, the cover plate both covered the arm and stretched into the hole 12, and was locked by the automatic locking device again. When the automatic locking device is opened with a key, the cover plate is automatically turned up, exposing the arm covered by it to extend into the hole.

technical field

[0001] The invention relates to an accessory device of a building, especially an access control device for personnel entering and exiting. Background technique

[0002] The security of an anti-theft door depends on the performance of the door lock it uses. Although the existing various mechanical door locks are simple in structure, sturdy and durable, low in manufacturing cost, and easy to install, their anti-theft performance is poor, and their lock cylinders are easy to be twisted by thieves with technical unlocking methods, thereby easily opening the door. That is to say, the anti-theft door using the mechanical door lock has no safety at all. It can only prevent gentlemen, but not villains.

[0003] In recent years, some anti-theft doors use electronic password door locks or electronic door locks that can recognize fingerprints and pupils. Although they can effectively prevent thieves from using technical unlocking methods to open the door, the manufactu...

Examples

Embodiment 1

[0018] As shown in the figure, the present invention includes a door frame 3, a door leaf 1 and a common door lock 10, and is characterized in that the upper, lower, left and right sides of the inner cavity of the door leaf 1 have a fork-shaped door frame 4 and a fork-shaped door bolt 4 respectively. The straight bar 41 is covered with a return spring 5 and is threaded in the guide support seat 6. The guide support seat 6 is fastened on the back of the panel of the door leaf 1, and the two pins 42 of the fork-shaped bolt are respectively threaded on the door leaf 1. In the sidewall bolt holes, there are latch hole slots 31 matched with the bolt pins on the corresponding sides of the door frame 3; a turntable bracket consisting of a bracket bottom plate 7 and a bracket panel 8 is installed on the left side of the center of the door leaf 1, and the turntable 9 The two ends of the central shaft are respectively inserted in the central holes of the support bottom plate 7 and the su...

Embodiment 2

[0021] The present embodiment is basically the same as example one, except that the cylindrical plug cover with an aesthetic effect on the door leaf 1 panel is embedded in the arm and extends into the hole 12. When needing to open the door, as long as the plug cover is taken off first.

Embodiment 3

[0023] The present embodiment is basically the same as Example 1, except that the door leaf 1 panel has a lid lock with an automatic locking device on the arm and extends into the hole 12 . The structure of the trunk lid lock is identical with the existing trunk lid lock. When the cover plate of the lid lock was pressed, the cover plate both covered the arm and stretched into the hole 12, and was locked by the automatic locking device again. When the automatic locking device is opened with a key, the cover plate is automatically turned up, exposing the arm covered by it to extend into the hole.

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