| Summary: | 碩士 === 國立臺北科技大學 === 創新設計研究所 === 99 === As the aging society comes, “aging” is the basic problem, in our observation of the difficulties encountered by older people in their daily lives found that rising up and sitting down were not only laborious but also dangerous to them. Although, many efforts have been made in the design and development of assistive chairs over recent years, most of them focused on electric powered components, and this has also limited the use of the chairs to places where electric power is available. The purpose of this study was to examine the use of gas spring lifter as a power component for assistive chairs to solve the problem with electricity availability. Our pilot study found that when the gas spring lifter was fixed to the chair, it would make people with light body weights difficult to sit down and those who were heavier difficult to stand up. If the lifter can adopt an adjustable design, its scope of application can be broadened.
The purpose of this study aimed to examine the relations between gas spring lifter and body weights. An improved mechanism was devised for testing to identify the most appropriate lifter angles for sitting down and rising. In the end, an idea for the design of a new mechanism was presented for reference. Below are our findings and conclusions.
(1) A 50kg gas spring lifter is most suitable for people who weigh 55kg or below; a 65kg lifter is most suitable for those whose weights are between 55kg and 70kg; for those who weigh between 70kg and 90kg, a 80kg lifter is most suitable.
(2) When people are sitting on the chair, the best lifter angles are between 15∘and 20∘. It was found that 15∘ is most suitable for females and 20∘for males. 76.7% of the people expressed that the best lifter angle for them to stand up was 35∘and 15∘was most suitable for sitting down.
(3) An adjustable mechanism both in the angle and supporting point of the gas spring lifter is proposed for the design of an assistive chair to accommodate different weights of older people.
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