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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: 2009-07-08
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 characterised 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 carrier. Background technique [0002] In the backrest known from DE 90 06 316 U1, each back support is arranged on a separate carrier. The bearing parts are mutually positioned in a V shape, and the lower ends of these bearing parts are mounted to the rear of the seat on the seat frame. 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. Relaxation of the spine of the seated person during prolonged periods of sitting also fails to relax the spine of individu...

Claims

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Application Information

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Patent Type & Authority Applications(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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