Back rest for a stool or a chair, and stool or chair provided with such a back rest

A backrest, chair technology, applied in chairs, stools, applications, etc., can solve problems such as inability to relax the spine

Inactive Publication Date: 2012-04-04
ROHDE & GRAHL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even though the back supports provide a certain degree of mobility due to the elasticity of their two load-bearing parts, thereby being able to adjust different seating positions of the seated occupants, it has been found that this configuration cannot be adjusted in different seating positions by changing the seating position. Relaxes the spine of the occupant during extended periods of sitting and does not relax the spine of individuals with widely varying physiques

Method used

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  • Back rest for a stool or a chair, and stool or chair provided with such a back rest
  • Back rest for a stool or a chair, and stool or chair provided with such a back rest
  • Back rest for a stool or a chair, and stool or chair provided with such a back rest

Examples

Experimental program
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Embodiment Construction

[0019] Figure 7 A perspective view of a chair is shown, comprising a five-star base 1.1 provided with castors (coaster), a pillar 1 supported on the five-star base, a seat 100 and a backrest 3 with two back supports 3.1, which Two back supports are arranged laterally spaced apart from each other and are connected to an L-shaped support member 4, each support member being constituted by a generally vertically arranged bearing part 4.1 and a generally horizontally arranged bearing part 4.2. Each back support 3.1 is mounted to a fixing member 7 which is adjustable along the associated load bearing 4.1 to assume different height adjustment positions. Each fixing member 7 comprises a rubber element so that the respective back support is movable relative to the bearing part 4.1. The bearing parts 4.1 are interconnected by elastically deformable transverse bars 9, the spring rate of which is designed to keep the free movement of each back support relative to the other within a limi...

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PUM

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Abstract

The invention relates to a back rest for a stool or a chair, comprising two adjacent, spring-mounted back supports (3.1), each of which is fixed to a separate carrier part (4.1). Said back rest is characterized in that each carrier part (4.1) forms the first limb of an essentially L-shaped carrier (4), and the second limb (4.2) of each carrier (4) is fixed beneath the stool or chair seat in such a way that it can be pivoted about a horizontal axis against an elastic force.

Description

technical field [0001] The invention relates to a backrest for a stool or a chair, the backrest having two back supports positioned transversely adjacent to each other and elastically supported, wherein each back support is connected to separate bearing parts, wherein each bearing part forms a first leg of a generally L-shaped support member, and a second leg of each support member is mounted on the stool in a manner capable of pivoting about a horizontal axis against spring force or under the seat of a chair. Background technique [0002] In the backrest known from KR 2005 0023 593 A, the individual back supports can only move within a certain range according to the movement and sitting posture of the person sitting on the stool or chair. In the normal or inactive position, the two back supports lie substantially in a common plane. However, if the upper body undergoes rotational movement about a vertical axis, the back supports move in such a way that they no longer remai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A47C7/44A47C9/00
CPCA47C7/443A47C7/448A47C7/405A47C7/441A47C7/402
Inventor 马丁·巴伦达特
Owner ROHDE & GRAHL
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