Chair, in particular office chair, with a vertically adjustable back rest support
AssigneeBurositzmobelfabrik Friedrich-W. Dauphin GmbH & Co.
InventorElke Dauphin
Life of this patent
Estimating the term…
Abstract
A chair has a seat and a back rest supported by a back rest support to be vertically adjustable, the back rest support being connected, on the one hand, to the back rest and, on the other hand, to the seat. In order, firstly, to enable a simple and elegant vertical adjustment and, secondly, to design the back rest and the seat to be suitable for packaging and, therefore, for dispatch, the back rest support is telescopically composed of an inner and an outer support member, and an interlocking device for the detachable interlocking of the two support members in varying positions, relative to one another, is provided on the back rest support.
Claims10
A chair, in particular an office chair, comprising:
- a pedestal,
- a seat supported on said pedestal,
- a back rest,
- a back rest support for vertically adjustably supporting said back rest, the back rest support being connected to the back rest and to the seat, said back rest support being telescopically composed of an inner and an outer support member,
- an interlocking device for detachably interlocking the two support members in varying positions relative to one another provided on the back rest support, and
- a prestressed spring for detachably pressing the interlocking device into an interlocking position, said spring acting as an extension safeguard for the support members and having one end being flexibly prestressed, entering a slot in the outer support member, wherein said slot is associated with a locking recess in the inner support member.
A chair according to claim 3, wherein the interlocking device (14) has a slide (20) with an inclined part (25) as abutment for the ball (19).
A chair, in paritcular an office chair, comprising:
- a pedestal;
- a seat supported on said pedestal;
- a back rest;
- a back rest support for vertically adjustably supporting said back rest, the back rest support being connected to the back rest and to the seat, said back rest support being telescopically composed of an inner and an outer support member;
- an interlocking device for detachably interlocking the two support members in varying positions relative to one another provided on the back rest support, said interlocking device comprising a ball notch arrangement including a ball held in the outer support member adapted to be pressed, in each case, into one of several recesses provided in the inner support member, further comprising a slide having an inclined part as an abutment for the ball;
- and
- a prestressed spring for detachably pressing the interlocking device into an interlocking position, wherein the slide is pressed by the prestressed spring into an interlocked position in which the ball is pressed by the inclined part in the direction of the inner support member, and wherein the spring in addition acts as an extension safeguard for the support members.
Dependencies are inferred from the claim text.