Chair with seat sliding to drive backrest to incline

Abstract

The invention relates to a chair with a seat sliding to drive a backrest to incline, which comprises chair legs, a chassis, a seat and a backrest bracket arranged on the chassis, and a backrest arranged on the backrest bracket, wherein the chassis is provided with an adjustment device adjusting the inclination angle of the backrest bracket. The invention is characterized in that the middle part of the backrest can be arranged on the upper end of the backrest bracket in a rotation mode, the seat comprises a bracket and a cushion body which is arranged on the bracket and can move back and forthrelative to the bracket, and the back part of the cushion body is movably hinged with the lower part of the backrest. The left side and the right side of the bottom of the cushion body are respectively provided with guide slots in the front and back directions, and the bracket is provided with idler wheels arranged on the guide slots. A positioning device which controls the front and back positions of the cushion body is also arranged between the bracket and the cushion body. With the structure, the chair with the seat sliding to drive the backrest to incline has reasonable structural design,the inclination scope of the angle of the backrest is large, and the center of gravity can be changed along with the inclination of the backrest, so the chair is comfortable in use.

Description

Technical field [0001] The invention belongs to the field of furniture manufacturing, and specifically relates to a seat whose seat slides and drives the backrest to tilt. Background technique [0002] Current seats generally consist of chair legs, a chassis, a seat and a backrest bracket installed on the chassis, and a backrest installed on the backrest bracket. In order to improve comfort, an adjustment for adjusting the inclination angle of the backrest bracket is generally provided on the chassis. device to adjust the inclination angle of the backrest, such as the technical solution of "a wire-controlled device for tilting and lifting of swivel chairs" disclosed in the Chinese utility model patent (Patent No.: 200820051448.6). This technical solution uses an easy-to-operate cable adjustment device. A seat that controls the tilt angle of the backrest. Of course, there are other ways to directly control the inclination angle of the backrest bracket. This control technolog...

AI Technical Summary

Problems solved by technology

However, for current seats of this type, when the inclination angle of the backrest is changed, the center of gravity of the seat will also move backward with the change of the inclination angle of the backrest. It may break due to excessive load-bearing, or the chair loses balance and falls over. Therefore, the reclining angle is generally limited during design to prevent the chair legs from breaking or toppling over. This will inevitably limit the range of inclination angles of the backrest.

In addition, in the existing seat, when the backrest is reclined, the seat will also be reclined synchronously. In this way, when the human body sits on the seat, the legs will also be raised very high. When the reclining angle of the backrest is large, the legs will will be very uncomfortable

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