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Safety attached door lock with high torsion and impact strength

A torsion-resistant and high-strength technology, applied in the field of additional door locks, can solve the problems of thieves easily breaking glass and destroying door locks, etc., and achieves the effects of improving anti-prying performance, improving torsion resistance and impact strength, and high safety in use.

Inactive Publication Date: 2006-11-22
WAH MEI (TOI SHAN) HARDWARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, since the ends with nuts of the two screws connecting the lock cylinder are exposed to the outside of the inner end cover, for an additional lock installed on a door with glass, it is very easy for a thief to break the glass and then remove the fixed lock cylinder. Screws that separate the lock cylinder from the lock body and destroy the door lock

Method used

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  • Safety attached door lock with high torsion and impact strength
  • Safety attached door lock with high torsion and impact strength
  • Safety attached door lock with high torsion and impact strength

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The additional door lock in the present embodiment has only the additional lock of single outer lock cylinder, Figure 1A Shown the overall appearance of the present invention, its detailed structure is then by Figure 1B ~ Figure 1D show. Such as Figure 1AThe safety additional door lock with anti-twist and impact strength of the present invention includes a lock cylinder 11, a deadbolt assembly 20, an outer end cover 30, a transmission assembly 40, an inner positioning plate 51, a knob 60, an anti-twist stop block 70, a lock The cylinder fixing screw 80, the connecting seat 90 and the inner end cover 100, wherein the lock cylinder 11 and the deadbolt assembly 20 are similar in structure to the common additional door lock, and will not be repeated here.

[0040] The gist of the present invention is that an anti-twist and anti-collision structure is provided on the additional lock, and the main components of this structure are the outer end cover 30, the inner positioni...

Embodiment 2

[0045] The additional door lock in the present embodiment is the double gallbladder additional door lock that has inside and outside lock cylinder, and this lock is when unlatching, and inside and outside lock cylinder all need just could open with key. The structure of the double bile additional door lock is as follows: Figure 2A ~ Figure 2D As shown, it includes an inner lock bladder 12, an outer lock bladder 11, a deadbolt assembly 20, an outer end cover 30, an inner positioning plate 52, an anti-twist stop block 70, a screw 80 and an inner end cover 100, an outer lock bladder 11, The inner lock bladder 12 and the deadbolt assembly 20 are similar in structure to common additional door locks.

[0046] Same as Embodiment 1, the present invention provides an anti-twist and impact-resistant structure on the additional lock, and the main components of this structure are the outer end cover 30 , the inner positioning plate 52 , the cover plate 13 and the stop block 70 . The str...

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Abstract

A safety additional door lock with anti-twist and impact strength. The door lock includes a lock cylinder and a deadbolt assembly. It is characterized in that the lock cylinder is fixed in a hollow outer end cover with an open front and a closed rear end. The outstretched arm of the barrel passes through the closed end of the outer end cover to connect with the lock tongue assembly and the transmission assembly, and the transmission assembly is connected with the knob; an anti-rotation stopper is provided between the inner positioning plate and the outer end cover; The lock cylinder is connected with the inner positioning plate by at least two screws, and the screws are covered by the inner end cover connected with the inner positioning plate. The door lock also includes a double lock cylinder door lock with inner and outer lock cylinders, the outer lock cylinder is connected with the inner positioning plate by at least two screws, and the end of the screw with a nut is sealed between the inner positioning plate and the cover plate In between, the inner end cover connected with the inner positioning plate is installed on the outside of the cover plate. The invention can effectively improve the anti-twist and anti-impact strength of the additional door lock, prevent the additional door lock from being damaged by torsion and impact force, and prevent the door lock from being damaged by disassembling the fixing screw of the lock cylinder, thus ensuring the safety of the additional door lock sex.

Description

technical field [0001] The invention relates to an additional door lock, in particular to a safety additional door lock with anti-twisting and impact strength which can resist the torsion and impact damage of the additional door lock by an external force, and whose anti-twist and impact strength reaches the first level of the American National Standard . Background technique [0002] Various forms of locks can be seen in people's lives, including hidden locks fixed on doors, boxes, bags and other objects and padlocks used on locks fixed on objects. The most common type of lock. Most of the door locks are mounted on the joint between the door and the door frame, the door and the door frame are locked by the extension of the dead bolt, and the lock is opened by turning the key to retract the dead bolt. In order to ensure safety, an additional lock is also set on some doors. The lock cylinder of most additional locks has an end cover with a larger diameter, and a cylindrical ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E05B9/06
Inventor 阮家强
Owner WAH MEI (TOI SHAN) HARDWARE CO LTD
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