Dual-thrust toothed belt type lifter with buffering gear and self-adoptive sliding block

Abstract

A dual-thrust toothed belt type lifter with a buffering gear and a self-adoptive sliding block comprises a drive mechanism, a lifter bracket and a lifter base and is characterized in that the lifter bracket is of a rectangular strip-shaped tube body; a seam is formed longitudinally in the side wall of the tube body to form a sliding rail; a rectangular toothed belt guide groove is formed in the internal wall of the tube body of the lifter bracket; and a flexible toothed belt capable of twitching up and down is arranged in the toothed belt guide groove; the toothed belt is engaged with a toothed belt drive gear, which is arranged on the lifter base, at the lower end of the lifter bracket; and a pinch roller for compacting, extruding and pushing the toothed belt is arranged on the back of the toothed belt at the engaged position. The beneficial effects are as follows: the roller body capable of rolling is arranged on the back of the toothed belt at the engaged position of the toothed belt, so that the abrasion is reduced; when the sliding block suffers from abrasion, a pressure spring props against a pulley block to move forward so as to compensate the abrasion of the sliding block; the drive gear is a buffering gear which plays a role in protecting the gear, so that the service life of the lifter is prolonged.

Description

Technical field [0001] The invention relates to a car window lifter, in particular to a double-push toothed belt lifter. Background technique [0002] At present, in the toothed belt lifters on the market, the toothed belt is pushed by the gear arranged on one side of the toothed belt tooth surface. In addition, the sliding block of the lifter is in direct contact with the sliding rail through the chute on the sliding block. Due to the sliding contact, the frictional resistance is relatively large, and the sliding block is seriously worn. The above reasons will cause the window glass to easily Stuck failure occurs; the drive gear of the lifter does not have a buffer device. When encountering obstacles or suddenly stopping during the lifting of the window, the drive gear bears a large impact force, which can easily lead to gear damage. The above reasons will cause the window to be damaged. The failure rate of the elevator increases and the service life is shortened. Conten...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the defects of the existing automotive window lifter, the present invention provides a double-push toothed belt buffer gear self-adaptive slider lifter. Since a wheel body that can roll is set on the back of the toothed belt where the toothed belt meshes, The back of the toothed belt is changed from the original sliding friction state to rolling friction, so that the frictional resistance is greatly reduced; the self-adaptive slider enables the lifter slider and the chute to be automatically compensated after wear and tear, and the phenomenon of jamming is not easy to occur; the driving gear As a buffer gear, it can make the driving gear have a gentle transition process to the impact force when the window is raised and lowered when encountering an obstacle or suddenly stops, which protects the gear, prolongs the service life of the gear, and reduces the window load. lifter failure rate

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