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Inward-opening type adjustable anti-theft door locking bolt

A lock bolt and door-opening technology, applied in the field of anti-theft locks, can solve problems such as bolt failure, elastic force cannot be adjusted, easily damaged keys, etc., and achieve the effect of easy axial movement, reduced contact area, and good anti-loosening performance

Inactive Publication Date: 2013-03-27
HUANGSHI UNIVERSE AUTO EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the existing inner-opening type anti-theft lock bolt, once the compression spring used is assembled, its elastic force cannot be adjusted. If the spring elastic force used is too tight, it will be very laborious for the user to use the key to open the door, and the key is easy to be damaged. If the spring force used is too loose, the door bolt may not reset normally, resulting in failure of the door bolt

Method used

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  • Inward-opening type adjustable anti-theft door locking bolt
  • Inward-opening type adjustable anti-theft door locking bolt

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Embodiment Construction

[0008] Figure 1 to Figure 2 Shown in is a specific embodiment of the present invention, and the door bolt of the present invention's inner-opening adjustable anti-theft lock includes a screw 2, a handle 3, a compression spring 6, a stopper 7, a shaft 8 and a bolt head 9, and on the shaft 8 An adjusting sleeve 5 is sleeved, and the adjusting sleeve 5 is connected to the fixed sleeve 4 through threads. A clearance fit is adopted between the inner hole of the adjusting sleeve 5 and the shaft 8 to ensure that the adjusting sleeve 5 rotates or slides axially relative to the shaft 8 . The adjusting sleeve 5 has an external thread and is a fine thread. There is an annular groove 11 in the inner hole of the adjusting sleeve 5. On the one hand, it can store oil for lubrication; Axial movement in the inner hole. The fixed sleeve 4 has an inner hole thread, and is a fine thread.

[0009] When the user uses the key to open the door, with the rotation of the key, the lever 10 will swi...

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Abstract

The invention discloses an inward-opening type adjustable anti-theft door locking bolt which comprises a screw (2), a handle (3), a compression spring (6), a stopping block (7), a shaft (8) and a door bolt head (9). An adjusting sleeve (5) is sleeved on the shaft (8) and fixedly connected with a fixed sleeve (4) through threads, an inner hole of the adjusting sleeve (5) is in clearance fit with the shaft (8), an external thread is arranged on the adjusting sleeve (5) and is a fine thread, a circular groove (11) is arranged in the inner hole of the adjusting sleeve (5), and the fixed sleeve (4) is provided with an inner hole thread which is a fine thread. The inward-opening type adjustable anti-theft door locking bolt is simple in structure, easy to assemble, adjustable in spring force, reliable to operate, easy to unlock and long in service life.

Description

Technical field: [0001] The invention relates to an anti-theft lock, in particular to an inner-opening adjustable anti-theft lock bolt. Background technique: [0002] In the existing inner-opening type anti-theft lock bolt, once the compression spring used is assembled, its elastic force cannot be adjusted. If the spring elastic force used is too tight, it will be very laborious for the user to use the key to open the door, and the key is easy to be damaged. If the spring force used is too loose, the door bolt may not be able to reset normally, resulting in failure of the door bolt. Invention content: [0003] The purpose of the present invention is to provide a simple structure, easy to assemble, adjustable spring force, reliable operation, easy to unlock, long service life adjustable anti-theft lock door bolt with inner door opening. [0004] In order to achieve the above-mentioned purpose, the door bolt of the present invention's inner-opening adjustable anti-theft loc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E05B15/10
Inventor 黄凌志熊卫兵
Owner HUANGSHI UNIVERSE AUTO EQUIP
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