Improvement on S-shaped sofa chair for sitting and laying

Abstract

The invention discloses improvement on S-shaped sofa chair for sitting and laying, which consists of a front leg pipe system, a rear leg pipe system, a footrest system, a chair seat, a chair back, a footrest plate, hinges, positioning pins, a hinge pipe, leg wheels and a connecting fabric, wherein the chair back consists of a chair back main body and a waist pad; the hinge pipe consists of a long sleeve, a short sleeve, an internal pipe, a spring, a positioning spring and a hinge seat; the long sleeve and the short sleeve are bodies with hollow cavities; the internal pipe is wrapped in the long sleeve and the short sleeve; the outer walls of the long sleeve and the short sleeve are connected with lugs; one end of the long sleeve is connected with a spring, the internal pipe is a body with a hollow cavity; one end of the internal pipe is closed, and the spring is wrapped and connected in the internal pipe; one end of the positioning spring is connected with the long sleeve, and the other end of the positioning sleeve is connected with a short sleeve; the main body of the chair back is connected with the chair back hinge of the rear leg pipe system and the long sleeve of the hinge pipe; and the waist pad is connected with the short sleeve of the hinge pipe through a bolt. The S-shaped sofa chair has the advantages of simple mechanism, two purposes of sitting and laying, automatic regulation of gravity center, small space occupation in idle state and enough support to the waist.

Description

technical field [0001] The invention belongs to the technical field of seat products, in particular to a structure of an S-shaped sofa chair. Background technique [0002] Most of the existing S-shaped sofa chairs can only lie down and cannot sit, and some S-shaped sofa chairs that can sit, such as functional sofa products similar to massage chairs. The function is actually very good. But its shortcoming is: one, the length of S-shaped sofa chair is close to two meters, takes up a lot of space when not in use. 2. Functional sofa products use the adjustable recline of the backrest to realize the function of "lying". The center of gravity of the seat system is fixed and cannot be adjusted, so the recline angle of the backrest is limited. 3. The hardware mechanism for functional sofa products to realize the functions of "lying down" and extending the feet forward is relatively complicated. Chinese patent application 2009101079081 discloses a dual-purpose S-shaped sofa chair ...

AI Technical Summary

Problems solved by technology

But its disadvantages are: 1. The length of the S-shaped sofa chair is close to two meters, and it takes up a lot of space when not in use.

3. The hardware mechanism for functional sofa products to realize the functions of "lying down" and extending the feet forward is relatively complicated

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