Chair footrest device

Abstract

The invention relates to a chair footrest device. The chair footrest device comprises a connecting seat assembly, a three-bar assembly, a footrest assembly and a positioning assembly. The connecting seat assembly is fixedly connected to the lower surface of a chair mat; the upper ends of a front member and a rear member of the three-bar assembly are respectively connected with the front connecting member and the rear connecting member of the connecting seat assembly; the lower ends of the front member and the rear member are respectively connected with a horizontal member of the three-bar assembly; the footrest assembly is connected to the horizontal member; the positioning assembly is arranged between the connecting seat assembly and the three-bar assembly and constitutes a four-bar mechanism/parallelogram mechanism. Through operation of a main operating handle and an auxiliary operating handle or a push-pull member, the footrest assembly can be positioned forwards to the highest or desired position and retracted backward below the chair. The chair footrest device disclosed by the invention has the advantages of being simple in structure, practical, convenient to operate and high in reliability; when being matched with the chair back, the chair footrest device can turn the sitting posture into lying posture or semi-lying posture, but is not limited to solving the problem of the footrest in lying or semi-lying to sleep/rest; the chair footrest device can conveniently add additional functions on a newly-designed chair or an original chair, so that the harm to sedentary people having sedentary behavior is reduced or eliminated.

Description

technical field [0001] The invention relates to the technical field of furniture, in particular to a chair footrest device. Background technique [0002] Sitting for a long time has become the living condition of modern people. According to authoritative media reports, prolonged sitting not only causes organ damage and muscle degeneration, but also damages the heart, spine, brain and intestines. In order to change or alleviate the harm that sedentary people sit for a long time, a method that people try is to increase the additional function of lying down or half lying down to sleep / rest on the chair. for example: [0003] 1) "A chair suitable for students taking a nap" with the application number 2013106788979, which consists of a panel, a head rest, a headrest, a pole, a horizontal support and an entrustment. The panel and the back make up the four-legged chair. The upper end of the backrest is connected to the headrest, and the lower end of the headrest is connected to...

AI Technical Summary

Problems solved by technology

[0007] The first example of the above technology only solves the problem of students sitting and sleeping, and cannot reduce the harm of sitting for a long time

The second and third cases are to solve or reduce the harm of sitting for a long time from the perspective of the whole chair, adding the additional function of lying down or half lying down for sleeping / resting, the scope of application is limited, and the structure is relatively complicated

However, the angle of this "chair footrest" cannot be adjusted, and can only be pulled out and pushed in. The operation is relatively primitive, and it only solves the problem of lying or half lying down for sleeping / resting feet

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