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Anti-pry bolt and bolt inserting structure having same

An anti-pry door latch and latch head technology, applied in building structures, buildings, safes, etc., can solve the problems of reducing the strength of the connection between the latch head and the sliding plate, the anti-prying performance of the latch head, and the complex structure, so as to enhance the anti-prying ability. performance, improving anti-prying performance, and the effect of high connection strength

Active Publication Date: 2011-06-29
王勇军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it has a common shortcoming. There is a matching structure between the door bolt and the swivel guide sleeve to realize the purpose of the door bolt rotating around its axis. Therefore, the structure is more complicated, and the door bolt must rotate during the working process. The bolt head and the front end of the slide plate are Rotary connection, generally a circular groove will be cut at the front end of the bolt head, which will reduce the strength of the joint between the bolt head and the slide plate, that is, the anti-prying performance of the bolt head will be reduced

Method used

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  • Anti-pry bolt and bolt inserting structure having same
  • Anti-pry bolt and bolt inserting structure having same
  • Anti-pry bolt and bolt inserting structure having same

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Embodiment Construction

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0030] Such as figure 1 Shown is a preferred embodiment of the tamper-proof door latch of the present invention.

[0031] A tamper-resistant door latch includes a bolt head 1 and a bolt hole 2 for mating the bolt head 1 . The bolt head in this embodiment is cylindrical, and of course the bolt head can also be cylindrical in other shapes.

[0032] The front end of the bolt head 1 has a head 11, the transverse dimension of the head 11 is larger than that of the bolt head 1, the bolt head 1 and the head are integral stamping parts, and the peripheral surface of the front end of the bolt head 1 has a side convex annular shoulder 12. The ring shoulder 12 forms the head 11 together with the front end of the bolt head 1 . Of course, side protrusions can only be set on one side or opposite sides of the bolt head peripheral surface, and the side protru...

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Abstract

The invention relates to an anti-pry bolt, which comprises a bolt head and a bolt hole for the bolt head to be inserted into, and is characterized in that: the front end of the bolt head has a head part of which the transverse size is greater than that of the bolt head; the bolt hole consists of a big hole part and a small hole part; the small hole part is positioned on the lower part of the big hole part and is communicated with the big hole part; the transverse aperture of the big hole part is greater than the maximum transverse size of the head part of the bolt head; the transverse aperture of the small hole part is smaller than the maximum transverse size of the head part and grater than the transverse size of the bolt head; and thus, the head part of the bolt head can pass through the big hole part but cannot pass through the small hole part, while the bolt head can pass through the small hole part. Due to the blocking action of the small hole part on the bolt head, the anti-pry performance of the bolt inserting structure is reinforced; and as only transverse and longitudinal movement instead of rotation is performed in the whole action process of the bolt head, the whole bolt inserting structure does not need an extract guide sleeve structure, and the structure is simplified while the anti-pry performance is improved. The invention also relates to the bolt inserting structure of the bolt.

Description

technical field [0001] The invention relates to an anti-prying door bolt and a latch structure with the door bolt. Background technique [0002] The structure of the existing safe cabinet door mainly includes a door frame, a door body pivotally connected to the door frame, and a bolt structure arranged between the door body and the door frame. door bolt, and on the door frame, the corresponding side door bolt is provided with a bolt hole. The door bolt is cylindrical, and the bolt hole is a cylindrical hole matched with the door bolt. There are some defects in this kind of safe cabinet door. If the criminals pry the door frame instead of the lock, since there is no obstructing structure between the bolt and the bolt hole, as long as the criminals only need to pry one side of the door frame slightly, the door will be closed. The bolt on the body can be easily disengaged from the bolt hole of the door frame, thereby opening the safe cabinet door, allowing lawbreakers to take...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E05G1/04E05G1/026
Inventor 王勇军
Owner 王勇军
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