Height regulating device for automobile chair

Abstract

The invention relates to a height regulating device for an automobile chair. The height regulating device for the automobile chair comprises an installing plate, a cover case, an operation plate, a locking mechanism, an output shaft and a center shaft, wherein the cover case is arranged at one side of the installing plate; the operation plate is arranged on the cover case; the locking mechanism isarranged in the cover case; the output shaft is arranged at the other side of the installing plate; the center shaft is respectively connected with the output shaft and the operation plate. The height regulating device has the characteristics that the center shaft is provided with an anti-loosening wheel at one end connected with the operation plate; an anti-loosening plate is arranged on the cover case; a position limiting lug boss is arranged above one side, facing the anti-loosening wheel, of the cover case; the position limiting lug boss passes through the operation plate to be fixed withthe anti-loosening plate; anti-loosening teeth are distributed at intervals in the circumference direction of one side, facing the anti-loosening plate, of the anti-loosening wheel; anti-loosening tooth clamp grooves are formed in the anti-loosening plate; a locking lug boss is arranged under one side, facing the anti-loosening wheel, of the cover case; the locking lug boss penetrates through theoperation plate and is arranged in the locking hole of the anti-loosening plate in a penetrating way; a striping lug boss is arranged at one side, facing the operation plate under the locking hole, of the anti-loosening plate; a pair of unlocking lug bosses is arranged at one side, facing the anti-loosening plate, of the operation plate in a projected way. The automatic sinking of the chair is avoided; the service life is prolonged; the manufacturing cost is low; the action consistency is good; the unlocking idle stroke is small.

Description

technical field [0001] The invention belongs to the technical field of car seat accessories, and in particular relates to a height adjusting device for a car seat. Background technique [0002] The car seat is one of the important safety components of the car. Its comfort directly affects the driving experience of the driver. The comfort of the seat is not only affected by its own softness, but also by the height of the seat and the inclination angle of the seat back. , wherein the height adjustment of the seat is generally realized by turning the height adjustment gear on the seat through the transmission gear on the height adjustment device. At present, there are mainly two types of height-adjusting devices for car seats on the market: manual and electric. Manual height-adjusting devices are popular among consumers because of their low cost and relatively stable and reliable transmission. [0003] In the prior art, such as the "Automotive Seat Height Adjustment Mechanism"...

AI Technical Summary

Problems solved by technology

In the above-mentioned publications, both of them adopt a pair of two-way clutches, through which the functions of manual toggle output shaft rotation and automatic locking can be realized. Often due to aging, the elastic force tends to decline, which greatly reduces the self-locking ability of the two-way clutch and the gravity it can withstand, especially when the seat is subjected to gravity exceeding the limit, it is very likely that the output shaft will be unlocked and rotated , causing the seat height to drop by itself

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