Multi-point-lock linkage mechanism

Abstract

The invention relates to a multi-point-lock linkage mechanism. The linkage mechanism comprises a shell, a rotary transmission piece and a spring bolt transmission piece, the rotating transmission piece is rotationally arranged on the shell, the spring bolt transmission piece, an upper locking piece and a lower locking piece are arranged in a linkage mode, and the upper locking piece vertically move in the shell; the mechanism comprises a transmission swing rod and a transmission connecting rod, wherein one end of the transmission swing rod is arranged on the shell in a swinging mode, and a transmission pin which is in linkage fit with the spring bolt transmission piece is arranged at the other end of the transmission swing rod; the spring bolt transmission piece is provided with a transmission groove allowing the transmission pin to penetrate through; the transmission groove is obliquely arranged with the movement direction of the spring bolt transmission piece, and the transmission connecting rod is arranged between the rotary transmission piece and the transmission swing rod, and drives the transmission swing rod to swing when the rotary transmission piece rotates; and the distance between the rotation center of the transmission swing rod and the joint of the transmission connection rod is smaller than the distance between the rotation center of the rotation transmission piece and the joint of the transmission connection rod. By the adoption of the scheme, the multi-point-lock linkage mechanism has the characteristics that the size of the small-size multi-point lock is reduced, the cost is reduced, and the material is saved.

Description

technical field [0001] The invention relates to a door lock, in particular to a linkage mechanism of a multi-point lock. Background technique [0002] The multi-point lock is a kind of anti-theft lock. On the basis of the oblique tongue and the square tongue with the locking function of the door body, an upper locking piece and a lower locking piece are added. The linkage mechanism of the lock makes the upper locking part and the lower locking part lock the door body at the same time, so as to improve the anti-theft and tamper-resistant performance of the door body. [0003] The linkage mechanism of the traditional multi-point lock includes a housing, a rotating transmission part and a deadbolt transmission part. The locking tongue transmission part is set in linkage with the upper locking part and the lower locking part and moves vertically in the housing. The outer periphery of the traditional rotary transmission part is provided with a transmission pin passing through th...

AI Technical Summary

Problems solved by technology

[0003] The linkage mechanism of the traditional multi-point lock includes a housing, a rotating transmission part and a deadbolt transmission part. The locking tongue transmission part is set in linkage with the upper locking part and the lower locking part and moves vertically in the housing. The outer periphery of the traditional rotary transmission part is provided with a transmission pin passing through the dead bolt transmission part, so that the transmission pins are opposite to each other when the rotary transmission part rotates. The transmission part of the deadbolt moves vertically under the drive of the transmission pin. Since the transmission angle of the square bar of the handle is a specified angle, in order to make the upper and lower bolts move with the transmission part of the deadbolt for a sufficient linear stroke, it is necessary to add a rotating transmission part. The distance between the rotation center and the transmission pin increases the volume of the rotating transmission part, which increases the volume of the multi-point lock, wastes materials, and increases manufacturing costs.

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