Telescopic type sitting and lying dual purpose chair

Abstract

The invention discloses a telescopic type sitting and lying dual purpose chair. A left parallelogram mechanism and a right parallelogram mechanism are separately formed by a left upper frame cross member, a right upper frame cross member, a left lower frame cross member, a right lower frame cross member, a left front main supporting member, a right front main supporting member, a left rear main supporting member and a right rear main supporting member of a chair frame assembly correspondingly, and a left guiding rail moving pair and a right guiding rail moving pair are formed by the left side and the right side of a chair seat assembly and the left upper frame cross member and the right upper frame cross member, correspondingly. A locking assembly is arranged on a pair of parts which can move relatively, an armrest assembly is arranged between a chair back assembly and the chair frame assembly. When the locking assembly is locked, the chair is in a sitting position, when the locking assembly is released, the parallelogram mechanisms are rotated backwards, a chair back, a chair seat, an armrest and a telescopic member are linked, the chair back and the chair seat are lengthened, a seat member moves horizontally downwards to a lying position, and switching of sitting and lying is achieved at one time. The telescopic type sitting and lying dual purpose chair fully uses the motion features of the parallelogram mechanisms, has telescopic features, has the advantages of simple structure, convenient use, small in occupied ground and space, low cost and the like, and is expected to solve the two problems that an existing sitting and lying chair is not likely to realize mass consumption and the use is limited.

Description

technical field [0001] The invention relates to the technical field of furniture, in particular to a retractable sitting and reclining chair. Background technique [0002] Existing reclining chairs have better solved the two common problems in daily life of "all kinds of harms brought by sitting for a long time" and "various benefits brought by afternoon nap"; existing reclining chairs There are two major problems: it is difficult to realize large Conghua consumption and limitations in use. for example: [0003] 1) At present, many computer chairs, boss chairs, racing chairs and other chairs on the market have added retractable or foldable footrests, which can be used to adjust the angle of the back of the chair, adding the function of reclining / resting. For example, the patent number is ZL2015210134233 "a foldable footrest device" or the patent number is ZL201320071075X "a chair footrest". However, this type of chair needs to be used for both sitting and lying: ① when si...

AI Technical Summary

Problems solved by technology

[0005] However, there is still room for improvement and improvement in the patented technology of this application: ① As in the first implementation example, there is still room for improvement in its armrests and operations—the linkage, structure and use can be more refined and upscale; ② As in the first example In the second implementation example, there is a complex structure of positioning parts and auxiliary parts that need four auxiliary supports; there is the shortcoming that the chair stretches insufficiently when lying down; 3. although the above two implementation examples are examples under the same scheme, they are relatively Difficult to achieve modular design and production

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