Foldable assistive stand-up chair

Abstract

A foldable assistive stand-up chair includes a base support, a chair mechanism and a driving component, and the base support includes a back frame, a chair frame, a leg frame and two armrests, wherein the chair mechanism is pivotally mounted onto the base support through the chair frame, and the driving component installed between the base support and the chair mechanism is provided for driving the chair mechanism to move the four link rods with respect to the base support for assisting a user to stand up through the support of the chair frame and the back frame.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a foldable assistive stand-up chair, and more particularly to a chair that assists a user to stand up when the user rises from the chair.[0003]2. Description of the Related Art[0004]With reference to FIG. 24 for a collapsible chair as disclosed in U.S. Pat. No. 7,628,450, the chair is provided for users to sit, or to lie on one's back by adjusting a control unit 71 (which is a seat rest slide 60 indicated in the specification of U.S. Pat. No. 7,628,450), so that the users can position the back of the chair horizontally backward and rest at a supine position on the chair.[0005]Although this patent provides the desired function, users such as the elderly or mobility impaired people cannot rise from the chair due to deteriorated knee caps or weak muscles, and the aforementioned patent does not provide an effective solution.[0006]With reference to FIG. 25 for a seating furniture as disclosed...

AI Technical Summary

Benefits of technology

[0008]Therefore, it is a primary objective of the present invention to overcome the shortcomings of the prior art by providing a foldable assistive stand-up chair, wherein a chair mechanism is pivotally mounted onto a base support, and a driving component is provided for driving the chair mechanism to move with respect to the base support, such that when a user wants to stand up, the user's back and hip are supported forwardly and upwardly by a back frame and a chair frame respectively to achieve the assistive stand-up effect.

[0016]a driving component, including a driving device and a follower disposed at the bottom of the chair frame, and an end of the driving device being pivotally installed on the front base frame, and another end of the driving device being pivotally coupled to the follower, and an end of the follower being pivotally installed at the bottom of the back frame, and another end of the follower being pivotally coupled at the bottom of the rear base frame, and a pivoting position of the chair frame and the front base frame being used as an operating center and provided for the driving device to drive the chair mechanism, so as to provide an assistive stand-up movement with respect to the base support.

Problems solved by technology

Although this patent provides the desired function, users such as the elderly or mobility impaired people cannot rise from the chair due to deteriorated knee caps or weak muscles, and the aforementioned patent does not provide an effective solution.

In FIGS. 2 and 3 of U.S. Pat. No. 7,090,296, the chair does not come with a design of assisting users to stand up, and cannot achieve the foregoing expected effect.

As described above, the conventional chairs only come with a design provided for lying, but lack of the function of assisting users to stand up.

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