DE7711865U1 - SEATING FURNITURE, IN PARTICULAR CHAIR - Google Patents

Description

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Dipl.-Ing. Bodo THIELKiNG

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Dipl.-Ing. Otto ELBERTZHAGEN _{Telox; g3HO59 attorney d}

Poüiocheok account: Han 3O9193-3OÄ Anv / altoaktonzoicheiT. 11th Date: 4/14/1977

Applicant: Drabert Sons

Wilhelmstrasse 11-17, 4950 Minden

"Seating furniture, especially a chair"

The innovation relates to a piece of seating furniture, in particular a chair with an adjustment device for synchronously coupled adjustment of the Inclination of the seat and backrest, with an energy storage device for resetting to a specified stop position.

Seating furniture with synchronously coupled adjustment devices are known in various embodiments. They usually own also at least one energy store, which the backrest and the seat in the unloaded state in each case in the specified To hold the stop position and to return the seat and backrest to the stop position when the load is removed.

Pressure, tension and so-called gas springs are used as energy stores. In the known designs, the energy storage usually arranged horizontally under the chair or armchair seat.

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In the case of the known seating furniture of this type, it has been found to be disadvantageous proved that due to unfavorable leverage when the backrest is relieved, i.e. when the upper body is leaning forward of the user, the backrest only hesitantly follows this upper body movement. This is because the one with the backrest ' synchronously coupled seat remains burdened by the weight of the user. In some known designs, the user must even stand up so that the seat and backrest can be guided forward through the energy storage mechanism provided.

Other known designs were chosen by more favorable Leverage ratio achieved better motion sequences. However, this happened with the Nechteil that either parallel to Chair column visibly arranged energy storage had to be provided, or that a large one. Distance between the energy store and the seat had to be accepted, so that this was always visible in a disturbing way.

Based on this state of the art, the object of the innovation is to provide seating furniture of the type mentioned at the beginning to train that the aforementioned disadvantages do not occur and a return of the backrest and seat practically without delay he follows.

To solve this problem it is proposed according to the innovation, that the energy store is arranged behind the forward-facing surface of the backrest.

It has proven to be advantageous that the energy store is arranged essentially vertically.

According to the innovation, it is also proposed that the energy store between the forward-facing surface of the backrest and a rear panel is arranged.

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11 266 -3- April 14, 1977

The arrangement of the energy store within the backrest is on the one hand particularly aesthetically pleasing and offers on the other hand, the guarantee that the Hebelverhaltnis.se can be chosen so favorably that the backrest and the synchronously coupled seat follow every upper body movement of the user without delay.

A common energy storage device is, for example, a gas spring ► The gas spring is particularly easy to access, both during final assembly and during repairs, if according to Another suggestion of the innovation, the panel is releasably attached to the chair. The fairing can either be a be continuous back shell, but it can also be a removable cover inserted into the back shell.

The adjustment device is in selectable intermediate stages can be locked between the end positions.

It has proven to be useful that the backrest sits on a backrest support which is about a horizontal axis is pivotably articulated on a seat support.

According to a further suggestion of the innovation is the backrest support coupled to the seat via a connector, the connector being articulated on the one hand to the backrest support and on the other hand is hinged to the seat or seat support. Finally, the innovation suggests that the energy store on the one hand is hinged on the seat support and on the other hand on the backrest support.

Below is a preferred embodiment of the innovation, described in detail with reference to the drawing. Show it:

Fig. 1 is a schematic side view of a chair in the basic position,

Fig. 2 is a schematic side view according to

Fig. 1, in which a deflected position

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of the seat and backrest is also shown in dash-dotted lines.

The chair has, in a known manner, a central chair column with a foot 2, at the ends of which rollers 3 are pivotably articulated. The chair column 1 carries a seat support 4 _a. The front end of the seat support 4 carries a bearing 5 on which the seat is pivotably articulated.

A backrest support 7 initially runs approximately horizontally below of the seat 6 and then rises upwards within the backrest 8. The backrest 8 is either fixed or movable attached to the backrest support 7. At the lower rear region of the backrest support 7 there is a connector 9 in one Articulation point 10 articulated. The other end of the connector 9 is fastened to the seat 6 at an articulation point 11. The backrest support 7 is mounted pivotably about its front horizontal pivot axis.

At the rear end of the seat support 4 there is an articulation point 13 to which a gas spring 14 is pivotably articulated. The gas spring is with its upper end at the upper end 15 of the backrest support 7 hinged. Both the backrest support 7 and the gas spring 14 and the pivot bearing 13 are within the Backrest, which is limited to the front by the forward-facing surface 8a and to the rear by the backrest shell or cover 8b.

When the backrest is pushed backwards in the direction of the arrow 16, the backrest support 7 is pivoted backwards about the pivot axis 12. At the same time, the hinge point 1 ² moves on the circular arc with the radius R as far as the rear stop position 12 ·. The gas spring inevitably pivots about its pivot point 13 and is pushed together during the movement process. This increases the restoring force of the gas spring 14.

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The articulation of the connector 9 with, the articulation points 10 and 11 ensure an inevitable adjustment of the inclination of the seat 6 during the pivoting movement of the backrest 8.

When the backrest is relieved, that is, when the application of force in the direction of arrow 16 has ended, the backrest follows directly to the forward moving torso of the user. This is mainly due to the large lever arm H,

g with which the energy store 14 on the axis of rotation 12 of the back

ί backrest carrier 7 attacks.

- Protection claims -

7111865

Claims (8)

«Ml f · M I · 266 -6-14, 4. 1977 claims for protection 1. Seating furniture, in particular chair with adjustment device for synchronously coupled adjustment of the inclination of the seat and backrest, with an energy store for resetting in a predetermined stop position, thereby characterized in that the energy store (14) behind the forward-facing surface (8a) of the backrest (8) is arranged. 2. Seating furniture, in particular chair according to claim 1, characterized in that characterized in that the energy store (14) is arranged essentially vertically. 3. Seating furniture, especially a chair, according to one or more of claims 1 to 2, characterized in that that the energy store (14) between the forward facing surface (8a) of the backrest (8) and a rear one Cladding (8b) is arranged. 4. Seating furniture, especially a chair; after one or more of claims 1 to 3, characterized in that that the panel (8b) is releasably attached to the chair. 5. Seating furniture, especially a chair, according to one or more of claims 1 to 4, characterized in that that the adjusting device can be locked in selectable intermediate stages between the end positions. 6. Seating furniture, in particular a chair, according to one or more of claims 1 to 5, characterized in '^ . that the backrest (8) sits on a backrest support (7) which is pivotable about a horizontal axis (12) on a seat support (4) is hinged, -7- 7711865 08/11/77 MM I I> • · ♦ * fit «MM 11 266 April 14, 1977 7. Seating furniture, in particular chair / according to claim 6, characterized in that the The backrest support (7) is coupled to the seat (6) via a connector (9), the connector (9) being articulated is hinged on the one hand to the backrest support (7) and on the other hand to the seat (6). 8. Seating furniture, in particular a chair, according to one or more of claims 1 to 7, characterized in that the energy storage device (14) is hinged on the one hand to the seat support (4) and on the other hand to the backrest support (7) . 7711865 08/11/77