Door lock structure capable of being opened in prepressing state of door

Abstract

The invention relates to a door lock structure capable of being normally opened in prepressing state of door. The door lock structure comprises a revolving lock catch (1), a sharp welt (1a) is projected on the lock catch (1), a mandril (2) coaxial with the rotating shaft of the lock catch (1) is arranged at the welt (1a) on the lock catch, and the mandril (2) is inserted into a sliding sleeve; the wall of the mandril (2) is opened with a spherical notch (2b), a round hole is opened at corresponding position at the sliding sleeve, a steel bear (3) is placed in the round hole, the outside of the steel bear can be provided with a rotatable brake block (9); one raised face (9a) of the brake block (9) is pushed against the steel bear (3), the lateral part of the raised face (9a) is opened witha concave cavity (9b) which can contain the steel bear (3); and a driving handle (9c) linked by a lock push rod (6) is arranged on the brake block (9) vertical to a rotating shaft (8). In the technical scheme, even if the door is in prepressing state, the moving of the mandril (2) can be realized by only providing a small push or pull force, and the door is opened smoothly, thus being a foolproofand reliable door lock mechanism.

Description

(1) Technical field [0001] The invention relates to a door lock structure, in particular to a door lock structure which can still be opened normally when the door is in a pre-pressed state. (2) Background technology [0002] As we all know, the door lock is composed of a lock and a lock. The lock is a long rotating block with a bite. The lock is a cylindrical rod. Half of the cylindrical rod is a gap and half is a cylindrical surface. When the lock The bite of the lock is located at the gap, and the lock catch can be rotated to open the door leaf. When the cylindrical surface of the lock block is located at the bite of the lock catch, the bite of the lock catch is blocked by the cylindrical surface, the lock catch cannot be rotated, and the door leaf cannot be opened. [0003] The lock gear is a section of cylindrical rod, half of which is a gap and half of which is a cylindrical surface. The cylindrical rod reciprocates back and forth along the axial direction so that the g...

AI Technical Summary

Problems solved by technology

[0005] However, in an abnormal state, in an emergency state, such as a fire, people will run from the indoors to the outdoors in a panic, push the door hard irrationally, and exert excessive pressure on the door. The cylindrical surface section of every lock is located at the lower part of the bite of the lock. The greater the sudden push force on the door leaf, the bite port will "bite" the cylindrical surface of the lock. The more you push, the tighter the "bite" will be. At this time, even if the electromagnetic spiral tube is energized, the electromagnet in the inside will be powerless to drive the lock gear to move, and the electromagnetic force generated by the electromagnet is much smaller than the force of the lock catch bite "biting" the lock gear cylindrical surface. It is impossible to open the lock at all, and it is impossible to open the door leaf at all. At this time, greater accidents are prone to occur and cause greater casualties. Therefore, a door lock structure device used in an emergency must be provided for escape and protection of life and property.

[0006] Similar to the above accidents, the outside wind pressure is too large, "biting" the cylindrical surface of the lock will cause the door to be unable to open; the door will be deformed due to moisture, etc. In such occasions, the door lock is opened normally. Due to the abnormal pre-pressure before, it is difficult to open the door lock by normal means. At this time, it is necessary to provide a countermeasure and mechanism that can still open the door lock

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