Recliner regulating device

Abstract

The present invention discloses a recliner regulating device comprising a cam, a return spring, a housing plate, a ratchet gear connected with a central shaft. The external hook of the return spring is fixed in a hole of the housing plate. Sliders are fitted in sliding grooves of the housing plate with the bosses of the sliders being attached with the sliding grooves of the cam. Wedges are fitted in the sliding grooves of the housing plate with the bosses of the wedges being attached with the sliding grooves of the housing plate. The sliding grooves for sliders are perpendicular to the sliding grooves for wedges. A two-point locking-up is formed between the self-locking surfaces of the sliders and the self-locking surfaces of the wedges after the position of the cam is fixed through the central shaft under the action of the return spring.

Description

FIELD OF THE INVENTION[0001]This invention relates to the field of mechanical technology, in particular to a recliner regulating device.BACKGROUND OF THE INVENTION[0002]At present, functions of angle-regulating and back's quick-folding can be realized in most of the recliner which then will be locked up after the angle-regulating is completed so as to fix the angle between the recliner seat and the recliner back.[0003]The prior mode to achieve the above mentioned functions is disclosed for example in Chinese Utility Model Patent No. 200420017699.4 titled “Plate spring type armchair angle regulating and back folder nuclear installation”. As shown in FIG. 1, in this device, two sliders 103 are supported by two self-locking surfaces 102 of the locking cam 101 under the action of the return spring. Therefore, the engagement between the slider teeth on two sliders 103 and the ratchet gear teeth is more stable, thereby the angle of the chair can be fixed after the angle between the chair ...

AI Technical Summary

Benefits of technology

The present invention provides a recliner regulating device that solves the problem of low engagement strength between the teeth of the slider and ratchet gear teeth when applying forces to the recliner back under the one-point support mode. The device includes a cam, return spring, coulisse, ratchet gear, central shaft, sliders, wedges, and bosses. The sliders have two self-locking surfaces that correspond with the self-locking surfaces of the wedges to form a two-point locking-up. The ratchet gear has ratchet gear teeth and sliding surfaces that come into contact with the ratchet gear teeth after the cam is restored. The device enables quick-folding of the recliner back and has compacted structure, small volume, high strength, good unlocking performance, and high regulation precision.

Problems solved by technology

As a result, after the angle between the chair seat and the chair back was regulated and fixed when a user leans against and exerts forces on the chair back, the problem caused by supporting each slider 103 at only one point is that the engagement strength between the teeth of the slider 103 and the ratchet gear teeth is low, which causes the chair back unstable.

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