Sitting and lying chair based on metamorphic mechanism and parallel four-bar mechanism

Abstract

The invention provides a sitting and lying chair based on a metamorphic mechanism and a parallel four-connecting-rod mechanism. The sitting and lying chair comprises a sitting and lying chair frame part, a parallel four-connecting-rod and metamorphic mechanism part and a pushing mechanism part. The frame part of the sitting and lying chair is constructed by adopting a structural material with reliable mechanical property and reasonable section size, so that the whole sitting and lying chair is reasonable and reliable, and the structure is safe when the sitting and lying chair is loaded; the parallel four connecting rods and the metamorphic mechanism part are hinged through hinges, and the function of the metamorphic mechanism is achieved when a user sits on the chair; the pushing mechanism part uses a driving rod with the length capable of being telescopically changed, the driving rod is connected through a control switch arranged on armrests of the sitting and lying chair, and the two ends of the pushing mechanism are hinged to the metamorphic mechanism through parallel four connecting rods. Rotation and telescopic linkage of the parallel four-connecting-rod mechanism and the metamorphic mechanism can be achieved, conversion of a sitting mode and a lying mode is achieved, the balance wheels are pushed to stretch out backwards, and the overall safety of the sitting and lying chair is guaranteed.

Description

technical field [0001] The invention relates to the technical field of reclining chair devices, in particular to a reclining chair based on a metamorphic mechanism and a parallel four-bar linkage mechanism. Background technique [0002] With the advent of my country's population aging trend, the number of disabled and sick elderly people in China is increasing. In daily life, we often see the wounded, the elderly, and the critically ill. Because of their extremely weak physical strength, it is extremely inconvenient to move. Especially the elderly suffering from chronic diseases such as arthritis, lumbar disc herniation and other diseases will seriously affect the elderly's own exercise ability. After lying down for a long time, these people are often unable to sit and stand independently, and their waists do not have enough strength to support their bodies. At the same time, ordinary wheelchairs for the elderly can only provide users with a single use posture, that is, a ...

AI Technical Summary

Problems solved by technology

After lying down for a long time, these people are often unable to sit and stand independently, and the waist does not have enough strength to support the body

At the same time, ordinary wheelchairs for the elderly can only provide users with a single posture, that is, a sitting posture, and users cannot obtain a better resting experience in a lying posture

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