Reaction force mechanism and chair using same
US10264886B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 5, 2016 |
| Grant date | Apr 23, 2019 |
| Priority date | — |
| Expiry date | Jan 15, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C7/441
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A pivot shaft (10) which is a first shaft member coupled to a supporting member, an inner cylinder (12) which is a second shaft member coupled to a supported member, and an outer cylinder (14) which is a third shaft member are disposed to be approximately coaxial with each other and disposed radially in multiple layers. The pivot shaft (10) and the inner cylinder (12) are coupled to each other through a first rubber-like elastic member (11), and the inner cylinder (12) and the outer cylinder (14) are coupled to each other through a second rubber-like elastic member (13). The total reaction force is increased by restricting the rotation of the outer cylinder (14) by means of an operating pin (19) which is a reaction force adjusting part and thereby adding a reaction force resulting from the second rubber-like elastic member (13) to a base reaction force resulting from the first rubber-like elastic member (11).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.