Piece of seating furniture
First Claim
1. A piece of seating furniture having a seat carrier, a seat part articulated to the seat carrier, and a back part supported on a back carrier to provide a supporting force, the supporting force provided by the back part being adjusted in response to a weight applied to the seat part, characterized in that the seat part is mounted on the seat carrier for vertical adjustment by means of a parallelogram linkage against the force of a spring element, in that the force of the spring element is adjusted in response to the vertical adjustment of the seat part, and in that the back carrier is mounted for pivotal motion with respect to the seat carrier, a pivoting motion of the back carrier taking place against the force of the spring element, the vertical adjustment of the seat part adjusting the supporting force provided by the back part.
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Accused Products
Abstract
The underlying object is to create a piece of seating furniture with which an automatic, bodyweight-dependent setting of the restoring force of the inclination mechanism and of the back part mechanism takes place.
According to the invention, the seat part (2) is mounted on the seat carrier (5) vertically adjustably by means of a parallelogram linkage arrangement (9, 10) against the pretensioning force of a spring element (16), furthermore the back carrier (4) is mounted pivotally on the seat carrir (5), a pivoting of the back carrier (4) taking place against the pretensioning force of the spring element (16).
The piece of seating furniture according to the invention can be used, for example, as office furniture, as a seat in a motor vehicle or in the domestic sector.
85 Citations
21 Claims
- 1. A piece of seating furniture having a seat carrier, a seat part articulated to the seat carrier, and a back part supported on a back carrier to provide a supporting force, the supporting force provided by the back part being adjusted in response to a weight applied to the seat part, characterized in that the seat part is mounted on the seat carrier for vertical adjustment by means of a parallelogram linkage against the force of a spring element, in that the force of the spring element is adjusted in response to the vertical adjustment of the seat part, and in that the back carrier is mounted for pivotal motion with respect to the seat carrier, a pivoting motion of the back carrier taking place against the force of the spring element, the vertical adjustment of the seat part adjusting the supporting force provided by the back part.
- 7. A piece of seating furniture having a seat carrier, a seat part articulated to the seat carrier, and a back part supported on a back carrier to provide a supporting force, the supporting force provided by the back part being adjustable, characterized in that the seat part is mounted on the seat carrier for vertical adjustment by means of a parallelogram linkage arrangement including a front linkage having one end pivotally mounted on the seat part and a second end mounted on a pivot bearing fixed in place on the seat carrier, a first rear linkage, and a linkage rod having first and second ends and mounted at its first end to the pivot bearing and at its second end to the seat part by means of the first rear linkage, said rear linkage being pivotally mounted at one end to the seat part and mounted at its central region on the linkage rod, and having a free end, in that the seat part is mounted for adjustment against a compressive force of a spring element, the compressive force being adjusted in response to the vertical adjustment of the seat part, in that the back carrier is mounted for pivotal motion with respect to the seat carrier, and in that the free end of the first rear linkage is connected to a second rear linkage by a link guide formed on the second rear linkage, the second rear linkage being fixedly pivotally mounted on the seat carrier, a pivoting motion of the back carrier taking place against the compressive force of the spring element, the vertical adjustment of the seat part adjusting the supporting force provided by the back part.
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15. A piece of seating furniture which is adjustable in response to the weight of a person seated thereon, comprising;
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a seat carrier; a seat part; linkage means pivotally connected to said seat part and to said seat carrier and forming an adjustable parallelogram therewith; a back carrier having a back part supported thereon; means connecting said back carrier to said seat carrier and to said parallelogram; spring means connected to said parallelogram to urge said seat part away from said seat carrier, said parallelogram being adjustable to provide vertical movement of said seat part toward said seat carrier to produce a compressive force on said spring means in accordance with the weight of a person seated on the seat part, said spring means further providing an urging force, through said parallelogram, to said back carrier to urge said back carrier forwardly with respect to said seat carrier so that pivotal motion of said back carrier rearwardly with respect to said seat part takes place against said compressive force of said spring means, said spring means providing an urging force on said back carrier in accordance with the weight of a person seated on the seat part. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification