Front middle door lock of automobile

Abstract

The invention discloses a front middle door lock of an automobile. The front middle door lock comprises a lock body and a shell, wherein the lock body is sleeved with a connecting plate, a locking linkage arm, an outer locking rocker arm, an outer opening rocker arm and a connecting plate, a downward protruding part A at one end of a locking push rod is clamped into a groove of the locking linkage arm, and a downward protruding part B at the other end of the locking push rod is clamped into a concave cavity of the outer opening rocker arm; the shell is perpendicular to the lock body, an inner locking inhaul cable and an inner opening inhaul cable are arranged in the middle of the shell, a worm gear is arranged on the outer side of the inner locking inhaul cable and connected with the inner locking inhaul cable, a motor is arranged on the outer side of the worm gear, a worm is connected to the motor, and the worm is engaged with the worm gear; the inner opening rocker arm is arranged on the outer side of the inner opening inhaul cable and connected with the inner opening inhaul cable; and a pawl and a ratchet wheel are arranged on a bottom plate, and the bottom plate is fastened to the bottom of the lock body through a plurality of screws. The front middle door lock is novel and ingenious in structure, the number of transmission parts is reduced, transmission is fast and labor-saving, the production cost is reduced, and the transmission failure risk is reduced.

Description

technical field [0001] The invention relates to the field of automobile door locks, in particular to an automobile front center door lock. Background technique [0002] At present, the electronically controlled unlocking and locking functions of automobile door locks on the market are to drive the worm gear to rotate by energizing the motor inside the lock body, and the worm gear drives at least one linkage to link the locking rocker arm again so that the locking push rod Move to the designated position: In this way, when the lock body is in the unlocked state, the pawl and the ratchet can be disengaged from the meshing position to open the lock body; in the locked state, the pawl cannot rotate, and the lock body cannot be opened without being engaged with the ratchet . When the lock push rod moves to the design position, it needs to drive one or more linked rocker arms again through the worm gear and continue to drive, which increases the number of lock body parts and caus...

AI Technical Summary

Problems solved by technology

[0002] At present, the electronically controlled unlocking and locking functions of automobile door locks on the market are to drive the worm gear to rotate by energizing the motor inside the lock body, and the worm gear drives at least one linkage to link the locking rocker arm again so that the locking push rod Move to the designated position: In this way, when the lock body is in the unlocked state, the pawl and the ratchet can be disengaged from the meshing position to open the lock body; in the locked state, the pawl cannot rotate, and the lock body cannot be opened without being engaged with the ratchet

When the lock push rod moves to the design position, it needs to drive one or more linked rocker arms again through the worm gear and continue to drive, which increases the number of lock body parts and causes the complexity of mechanical movement. Therefore, the customer can operate the lock on the inner handle The stop button increases the risk of part transmission failure and also increases the cost

[0003] In another prior art, the structure of unlocking and locking functions driven by the motor energized operation is realized through the motor-driven worm and worm gear interlocking parts with unlocking and locking functions, especially the transmission process requires a third The movement transmission between or more parts realizes the structure of interlocking unlocking and locking functions. At the same time, the locking and unlocking cables on the lock body are assembled on the lower parts of the worm gear transmission. The risk of failure of the movement transmission of multiple parts is high. increased production costs

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