Armrest locking device for automobile seat

Abstract

The invention relates to an armrest locking device for an automobile seat, which comprises a casing, wherein the casing is provided with a casing cavity; an anti-backlash sleeve arranged in the casingcavity, wherein the anti-backlash sleeve is provided with an anti-backlash sleeve cavity; a dial plate arranged in the anti-backlash sleeve cavity, wherein one side of the dial plate is convexly provided with a tooth plate shaft and a spring stop block; an outer tooth plate, wherein an abdicated hole is arranged in the middle part of the outer tooth plate, and an outer rack is arranged below thehole wall of the abdicated hole; a cam housing, wherein a cam is arranged on one side thereof; a main shaft, wherein the main shaft passes through the casing, the anti-backlash sleeve, the dial plate,the abdicated hole and the cam housing, the device also comprises a tooth plate, a locking spring and a plectrum spring, wherein the middle part of the tooth plate is arranged on the tooth plate shaft, one end of the tooth plate is provided with a top pin, the other end of the tooth plate is provided with a locking pin, and an inner rack is arranged on the outer side of one end of the top pin; the locking spring is arranged in the abdicated hole, one end of the locking spring is embedded in a locking spring embedding groove, and the other end extends to the lower part of a locking pin embedding groove; the plectrum spring is arranged between the spring stop block and the top pin. Locking of the handrail in a vertical position is realized; the structure is simple, the volume is small, theinstallation is convenient, and the operation force is small; the adjustment precision is low and the strength is high; the shaking gap is reduced.

Description

technical field [0001] The invention belongs to the technical field of car seat accessories, in particular to an armrest locking device for a car seat. Background technique [0002] The car seat is one of the most important facilities on the car. In order to improve the comfort and safety of the seat, the vehicle generally has a rotatable armrest next to the seat for the support of the passengers, especially in buses, long-distance Seats with armrests are particularly common in passenger cars and commercial vehicles. People can choose to put down the armrests according to actual needs, so as to block the lateral movement of the body and provide hand support, and also can choose to turn the armrests upwards to increase the space on the side of the seat and facilitate the entry and exit of passengers. Usually, one end of these armrests is connected to the middle and lower part of the side of the chair back, and the other end can rotate around the rotating shaft at the connect...

AI Technical Summary

Problems solved by technology

The disadvantage of the technical solution disclosed above is that although it can be adjusted upwards and rotated to stop at a certain angle when the armrest is parallel to the horizontal ground, it lacks effective fixing measures when the armrest is rotated upwards to the terminal (ie vertical) position , the armrest may cause the armrest to rotate as the vehicle vibrates or is bumped by passengers, that is, it cannot be locked in the vertical position

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