Locking device of automobile seat slide rail of improved structure

Abstract

The invention provides a locking device of an automobile seat slide rail of an improved structure and belongs to the field of automobile accessories. The automobile seat slide rail comprises an upper guide rail, a lower guide rail and the locking device, the upper guide rail comprises an upper mounting surface and a flanging, the lower guide rail comprises a lower mounting surface and a folded wall, more than four guide holes are arranged on the upper mounting surface, fixing lugs and a spring fixing hole are arranged on the flanging, more than four locking slots are arranged on the lower mounting surface, the locking device comprises at least four locking pins, pressure springs, a limiting plate, a return spring and an unlocking block, locking pin holes are arranged on the bottom face of the limiting plate, a lock surface is formed at the lower end of each locking pin, a locking pin convex stopper is convexly arranged in the middle of each locking pin, the pressure springs are sleeved on the locking pins, unlocking claws, a return spring hole and a return spring groove are formed on the unlocking block, and the return spring is provided with a first return spring hook and a second return spring hook. The locking device of the automobile seat slide rail of the improved structure has the advantages of small gaps, high lock strength, good synchronicity in front and back sliding, no self locking, small adjustment step pitch, less parts, convenience to assemble and process, low cost and wide application range, and the adjustment step pitch is about 5mm.

Description

technical field [0001] The invention belongs to the technical field of vehicle accessories, in particular to a device installed between the upper and lower guide rails of a car seat and capable of locking and unlocking the car seat slide rail, in particular to a car seat slide rail with improved structure locking device. Background technique [0002] The function of the car seat slide rail is to change the front and rear positions of the seat and lock the slide rail, so the locking device of the car seat slide rail is a must on the car seat slide rail. At present, the locking devices commonly used in the market on the slide rails of motor vehicle seats are mainly composed of locking pawls and locking row grooves. This can be understood through the technical scheme of the previously disclosed Chinese Invention Patent Granted Publication No. CN100447016C. This patent scheme discloses a "sliding rail for car seats". Its achievements are: the locking is balanced, there will be...

AI Technical Summary

Problems solved by technology

However, the following problems are exposed in the actual use process: when the slide rail is locked, multiple lock teeth are locked into the locking row at the same time, so the machining accuracy of the parts is required to be high, and the consistency and synchronization of the slide rail clearance Difficult to control

However, the following problems are also exposed in the actual use process: since the locking row teeth are placed on both sides and correspond to the lock grooves, the machining accuracy of the parts is required to be high

[0003] In addition, the current car seat slide rail generally has a large adjustment step, which makes it impossible to meet the best comfort level that the driver wants to achieve ; Moreover, the locking structure of the existing slide rails for car seats is locking by the locking pawl and the locking row groove, which requires high machining accuracy of the parts, and the consistency and synchronization of the slide rail gaps are difficult to control

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