EP3007590A1

EP3007590A1 - Chair

Info

Publication number: EP3007590A1
Application number: EP14744442.6A
Authority: EP
Inventors: Stefan Brodbeck
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-06-12
Filing date: 2014-06-12
Publication date: 2016-04-20
Also published as: MY187897A; US20160095443A1; WO2014198255A1; US10537181B2; CN105592752A

Abstract

The present invention relates to a chair (1) having a support frame (2), a seat part (8) supported thereby and having a seat base (9) and a backrest (14), which backrest is arranged near an edge of the seat part (8) at least approximately perpendicular to the seat base (9) and comprises a contact surface (15) for the back of a person sitting on the chair (1), wherein the backrest (14) is designed in such a way that it can be swiveled sideways about a swivel axis (13) which is at least approximately perpendicular to the contact surface (15) of the backrest (14).

Description

chair

description

The present invention relates to a chair according to the preamble of claim 1 and an actuating method therefor.

A chair generally includes a base frame, a seat portion supported thereon with a seating surface, and a backrest disposed at least approximately perpendicular to the seating surface in the region of an edge of the seating area and including a bearing surface for the back of a person sitting on the chair.

In order to facilitate comfortable movements of the upper body of a person sitting on the chair, there are various mechanisms for the backrest so that it follows a movement of the upper body to a predetermined extent. Especially in office chairs are mechanics that allow a backward movement of the backrest against a restoring force. Further, in practice a chair with a backrest has become known, which is defined by an elastic element, e.g. a rubber hedgehog, can elastically twist in itself.

In the case of chairs, stability and support function on the one hand and comfort on the other hand must always be weighed up. A chair with a backrest that supports every movement of a person sitting on it, with or without counterforce, is especially important for longer periods of time. As a result, sitting is just as inappropriate as a chair with a completely rigidly positioned backrest. Furthermore, chairs are very expensive due to elaborate mechanisms for the backrest mobility, so that many users can not afford or afford such chairs.

The aim of the invention is to provide a chair with a backrest, in which a mobility in accordance with movements of a person sitting on the chair is realized in a simple manner to increase both the convenience, but also the support function.

This object is achieved with a chair according to claim 1. Such a chair includes a base frame, a seat part supported thereon with a seat surface and a backrest which is arranged in the region of an edge of the seat part at least approximately perpendicular to the seat surface and contains a contact surface for the back of a person sitting on the chair, the chair characterized in that the backrest is designed so that it can be pivoted sideways about an at least approximately perpendicular to the contact surface of the backrest pivot axis. Preferably, further alternative or individually combinable embodiments are: the pivot axis extends through the contact surface and at an angle in the range of 60 ° to 120 °, preferably 70 ° to 110 °, particularly preferably 80 ° to 100 °, to the perpendicular to the ground on the chair is standing, the pivot axis is arranged in the range of 0 cm to about 30 cm, preferably about 2 cm to about 15 cm, more preferably about 5 cm to about 7 cm, above the seat, - the pivot axis may be in a predetermined circumference relative to the seat part and / or the backrest to be adjustable in height, there are rear part means are provided, by which is urged in a central normal position Rue ^¬ backrest, wherein the rear part of bodies have preferably linear or progres ^¬ sive force characteristics and / or a predetermined or predeterminable restoring force, there are locking means provided, which hold the backrest in a central normal position and a lateral

Allow pivoting of the backrest only from a predetermined or predetermined adjustment, in particular adjustable pivoting limits are provided for the lateral pivoting movement of the backrest, and the backrest can be assigned armrests, which pivot laterally together with the backrest. Preferred and / or advantageous embodiments of the invention and its individual aspects will become apparent from the entire present application documents.

The invention will now be described by way of example with reference to exemplary embodiments with reference to the drawing, in which Fig. 1 is a schematic side view illustrating a first exporting ^¬ approximately example of a chair,

Fig. 2 is a schematic rear view illustrating the chair according to the first embodiment of FIG. 1 with Rue ^¬ backrest in the central normal position and in broken lines in lateral pivoting positions,

FIG. 3 shows a schematic side view of a second exemplary embodiment of a chair, and FIG

FIG. 4 shows, in a schematic rear view, the chair according to the second exemplary embodiment from FIG. 3 with the backrest in the central normal position and in dashed lines in lateral pivoting positions.

With reference to the embodiments and examples of application described below and illustrated in the drawings, the invention will be explained only by way of example, that is, it is not limited to these embodiments and applications. Ver ^¬ fahrens- and device characteristics obtained in each case analogously from device and method descriptions.

Individual features that are specified in connection with a specific exemplary embodiment and / or illustrated are not limited to this embodiment or the combination with the übri ^¬ gen features of this embodiment, but may in the context of what is technically possible with any other variants, even if they are not treated separately in these documents. The same reference numerals in the individual figures and illustrations of the drawing designate the same or similar or the same or similar components. On the basis of the representations in the drawing, features which are not provided with reference symbols, irrespective of whether such features are described below or not, become clear. On the other hand, features that are included in the present description, but are not visible or illustrated in the drawing, are ^readily understandable to a person skilled in the art.

In FIGS. 1 and 2, a first embodiment of a chair 1 is shown schematically in a side view and in a rear view, respectively. The chair 1 of this first embodiment is an office swivel chair.

The chair 1 includes a base 2, which in a conventional manner for office swivel chairs a turnstile 3 with five arms 4, which assume a common holding axis 5 and at their free ends 6 each have a 360 ° swivel roller 7. A seat part 8 with a seat surface 9 is rotatably supported on the support shaft 5 of the undercarriage 2 at the upper end. The nature of this support (not shown) may have any known configuration and in particular Ver include adjusting and tilting devices and locking and locking devices for the seat part 8. The nature of this support of the seat part 8 on the holding ^¬ 5 will not be discussed here Since such supports, for example, for tilting, spring-loaded swinging, forward / backward adjustment, etc., are readily known to those skilled in the art and the person skilled in the art can suitably select, implement and use any known suitable support design without having to be inventive himself. Therefore, the design of such supports will not be discussed here. In the present first embodiment, a backrest holding device H is attached to the support shaft 5 in the region of the upper end thereof to which the seat part 8 is attached via the support (not shown) so as to be unitary with the seat part 8 on the support shaft 5 rotates. The backrest holding device H has in this first embodiment generally an L-shape with two mutually angled leg parts in the form of a Untergestellbefestigungsschenkels 10 and a Lehnenbefestigungsschenkels 11. The Untergestellbefestigungsschenkel 10 of the backrest support H is attached to the support shaft 5 in the region of the upper end, at which the Seat part 8 is mounted on the support (not shown), so that the backrest holding device H together with the seat part 8 and its support (not shown) rotates on the support shaft 5. Without limitation, however, the backrest holding device H could also be attached to the seat part 8 or its support (not shown). The Untergestellbefestigungsschenkel 10 of the backrest support H has such a length that the standing on a flat floor chair 1 angled upwardly projecting from him backrest leg 11 outside of an edge 12 of the seat ^¬ part 8 ^projects over the seat surface 9 upwards.

On the backrest attachment leg 11 of the backrest holding device H a backrest 14 is attached via a pivot axis 13, which is arranged at least approximately perpendicular to the seat surface 9 in the region of the edge 12 of the seat part 8 and a contact surface 15 for the back (not shown) one on the chair 1 sitting person (not shown) contains. The backrest 14 is attached to the backrest attachment leg 11 via the pivoting Axis 13 is designed so that it is laterally pivotable about the contact surface 15 of the backrest 14 at least approximately perpendicular pivot axis 13. For completeness, it should be noted that both the seat 9 and the abutment surface 15 need not be flat, flat, uncontoured surfaces for the back. These surfaces may already have shapes adapted to the buttocks and thighs or to the backs of a person using the chair 9 because of the shapes of the seat part 8 and the backrest 14, but preferably additionally by corresponding upholstery.

As far as in the present documents of directions relative to one or both of these surfaces is mentioned, it is readily understood by those ^{skilled in} the art that this direction refers to an area in the point for which the Richtungsrelati ^¬ on is specified , is representative of the function of the respective area. In particular, for the direction of the pivot axis 13 relative to the contact surface 15 of the backrest 14, this means that, in other words, it extends through the contact surface and at an angle in the range of 60 ° to 120 ° to the vertical on which the chair 1 stands, when the backrest 14 is in a normal position in which it is neither laterally pivoted about the pivot axis 13 nor adjusted by means of any existing back-tilt or oscillating devices forward or backward.

The present invention, ie the design of a chair with a pivot axis for the backrest, so that the latter can be pivoted laterally, can be combined with all embodiments for a pivoting or oscillating movement of the Backrest in forward and backward direction. For example, the backrest attachment leg 11 of the backrest support device H may be formed as a movable back bar, which allows a forward and backward movement of the backrest, such as a recline from a normal position to the rear with a defi ^¬ niertem opening angle. Corresponding devices and configurations, such as a Syncronmechanik, are readily known to those skilled in the art and the person skilled in the art can suitably select, implement and use any known suitable Abstützungsbauart without having to be inventive yourself. Therefore, the design of such forward and backward mechanisms for the backrest will not be discussed here. In the usual way, the support shaft 5 is telescopically ausgestal ^¬ tet, so that the seat part 8, in particular together with the backrest 13 are height adjustable. This height adjustment as well as suspensions of the seat part 8 on or over the holding axis, the skilled artisan in any suitable design of the prior art, without having to be inventive yourself. Therefore, the design of such Höhenverstell- possibilities for the seat part is not discussed here.

It is essential in the chair 1 of the present invention is the pivotal arrangement of the backrest 14 on the pivot axis 13, whereby a back and forth movement is allowed to the right and left, when a person sitting on the chair 1 person is leaning with his back to the backrest , As a result, the person sitting on the chair 1 person is supported even with sideways movements with the back on the backrest 14 and it is avoided that in such sideways movements of the back to the rear unsupported is, the back twisted and curves backwards and the edge of the backrest 14 is pressed into the back.

It can be provided back means (not shown) via which on the laterally pivoted backrest 14 a counter ^¬ or restoring force in the direction of a central unverschwenkgte normal position of the backrest 14 is applied. Can actuators such return can be provided directly in the pivot axis 13 inte grated ^¬ or as separate devices. Examples for rear portion institutions are acting on both sides bending ^¬ or torsion bars made of spring steel or single action spring pressure ^¬, rubber blocks and many other important details. This Rückstel- have Ironing Facilities the advantage that they support the erection of the person sitting on the chair one person from a laterally bent position into a normal position of the backrest corresponding to ^¬ right position.

In this case, it can also be advantageously provided that the reset devices preferably have linear or progressive force characteristics, which makes it possible to adapt to specific application requirements and individual users. For these purposes, it can further be provided with advantage that the Rücksteilein ^¬ directions have a predetermined or predetermined restoring force on ^¬ , which can be realized, for example, when using a bending bar made of spring steel by adjusting the effective length. Yet another advantageous refinement is that the rear part devices are such that when the backrest is pivoted but unloaded, a damped return of the backrest to the normal position takes place. By way of example, it can also be regulated via the restoring devices how far and how light or strong the backrest 14 can turn about the pivot axis 13 to the right or left. Alternatively or additionally, locking devices (not shown) may also be provided, which hold the backrest 14 in particular in the central normal position (shown in FIG. 2 with a solid line) and lateral Verschwen ^¬ ken the backrest 14 only from a predetermined or allow specified adjustment force. This can be avoided that the backrest 14 participates in such sideways movements even with small slight sideways movements ei ^¬ ner sitting on the chair 1 person. Instead, increased stability and support radio ^¬ tion for the back of the person sitting on the chair one person is achieved with slight lateral movements. Locking means Kgs ^¬ NEN preferably have an individually controlled release force and / or a pivotal positions of the backrest 14 see superiors or be adjustable.

Yet another advantageous embodiment consists in particular adjustable pivot limits (not shown) for the lateral pivoting movement of the backrest 14. Thus, an overload of pivot axis 13 and / or rear part facilities and the danger can be avoided that the stability of the chair 1 by too large Pivoting the backrest 14 and thus a person sitting on the chair 1 person is no longer given. Such pivot limitations can be realized for example by simple sockets or rubber plugs.

Depending on the other embodiments of the chair 1, the

Swivel axis 13 also be anchored, for example, in the seat part 8. In any case, it is preferred if the pivot axis is arranged in the range from 0 cm to approximately 30 cm, preferably approximately 2 cm to approximately 15 cm, particularly preferably approximately 5 cm to approximately 7 cm, above the seat surface. In connection with this, the individual Duellen adjustment of the chair 1 to be provided to a specific user with advantage that the pivot axis 13 in a predetermined scope relative to the seat part 8 and / or the backrest 14 is height adjustable. The adjustability of the vertical or HOE henposition of pivot axis 13 and / or back 14 may for example be by a Schnappmechanissmus, a lockable screening, a magnet or a friction member for position fixing of the pivot axis 13 and / or the backrest 14 in a realized by several Hö ^¬ henpositionen ,

A further advantageous embodiment is that the backrest 14 armrests (not shown) are assigned, which pivot laterally together with the backrest 14. This is achieved as an advantage that desired / existing armrests in the sideways movement of the person sitting on the chair 1 person are not in the way and press, for example, in the side of this person, but as it were "dive". The connection of armrests to the backrest 14 can also be switched off, switched or re-plugged to give the user the opportunity to "loiter" with lateral pivoting of the backrest 14 in the chair while using the standing armrest as an investment.

In FIGS. 3 and 4, a second embodiment of a chair 1 is shown schematically in a side view and in a rear view, respectively. In the chair 1 of this second embodiment is a - compared to the mobile, rotatable and forward / backward swiveling office chair - rigid visitor, conference or dining chair or the like., Which can also be designed as a so-called "cantilever" , With respect to the first embodiment in the second embodiment, the same or similar or the same or similar acting parts are each provided with the same reference numerals. Description will be made only to the aspects in respect of which the second embodiment differs from the first execution ^¬ example. In particular, in the corresponding parts and components of the second embodiment are all possible configurations, variations, modifications, substitutions and Kom ^¬ combinations which have been shown play in connection with the first exemplary embodiments and, possible and appropriate repetitive explanations thereto is for clarity omitted. In the seat 1 of the second embodiment is the underweight body ^¬ alternate 2 of four chair legs 16 with upwardly extending between support rods 17, whereupon the seat portion 8 is mounted firmly to the seat 9 in a conventional manner. However, the base 2 may for example be a pipe construction according to the principle of the "cantilever" or any other construction.

In the construction of chair legs 16 and the top extending therebetween supporting rods 17 and / or on the seat part 8, the Lehman is nenhaltevorrichtung H attached, which approximately, for example as in the first exemplary generally an L-shape with two mutually abge ^¬ angled leg portions in the form of the subchassis fastening leg 10 and the backrest attachment leg 11 has. The underframe attachment leg 10 of the backrest support H is attached to the construction of chair legs 16 and support rods 17 extending therebetween and / or on the seat part 8. The underframe attachment leg 10 of the backrest holding device H has a length such that the standing on a flat floor chair 1 angled upwardly projecting from him Lehnenbefestigungsschenkel 11 outside an edge 12 of the seat part 8 on the seat 9 upwardly projecting.

The backrest 14 is attached to the backrest attachment leg 11 of the backrest holding device H via a pivot axis 13, which is arranged at least approximately perpendicularly to the seat surface 9 in the region of the edge 12 of the seat part 8 and the contact surface 15 for the back (not shown) Person sitting in chair 1 (not shown). The backrest 14 is designed by the attachment to the backrest attachment leg 11 via the pivot axis 13 so that it can be pivoted sideways around the contact surface 15 of the backrest 14 at least approximately perpendicular pivot axis 13. In other words, the pivot axis 13 is arranged relative to the contact surface 15 of the backrest 14 so that it passes through the contact surface and at an angle in the range of 60 ° to 120 ° to the vertical to the floor on which the chair 1 stands when the backrest 14 is in a normal position in which it is neither laterally pivoted about the pivot axis 13 nor adjusted by means of any existing back-tilt or oscillating devices forward or backward. The Lehnenhaltevorrichtung H can be formed in this second embodiment, as well as in the previously explained with reference to FIGS. 1 and 2 first embodiment even elastic, for example, from sufficiently strong spring steel to a compliance of the backrest 14 in relation to a seated on the chair 1 Person to realize reverse direction. By the pivot axis 13, on the one hand, the undercarriage 2 together with the seat part 8 and on the other hand, the backrest 14 articulated so mitei ^¬ each other that the backrest 14 relative to the seat part 8 can be pivoted laterally about the pivot axis 13.

The pivot axis 13 is arranged to seat the backrest 14 just above the seat height, i. the seat surface 9, relative to the base frame 2 and seat part 8 pivotally supports, so that a defined lateral swinging back and forth of the backrest 14 about the pivot axis 13 is made possible.

As far as in the present documents from a pivot axis 13 is mentioned, so that no mathematical axis is meant, but a pivot joint, by a plain bearing, ball bearings, or similar. can be realized. Other possible designs for the

Swivel joint are a piece of rubber or other elastic material, which is designed in particular by shaping and / or reinforcement with inserts so that a substantial possibility of movement only in the said lateral directions for the inventive pivoting of the backrest 14, or a spring steel element o. Ä., Which then simultaneously the return means are functionally incorporated in the pivot axis 13.

The pivot axis 13 may also be designed or provided with additional means that a counter force against pivoting of the backrest 14 can be adjusted so that allows adaptation to individual needs of specific users. Such means for setting a counterforce against the pivoting of the backrest 14 may be, for example rubber elements with adjustable by squeezing friction. Depending on space and design requirements, the pivot axis 13 may be arranged in front of, in or behind the backrest 14. For example, the pivot axis 13 may also be hidden in or under a pad (not designated) of the backrest 14.

A further preferred embodiment is that the backrest 14 has a maximum width of about 25 cm to about 40 cm, preferably about 28 cm to about 35 cm, in particular about 30 cm.

The invention is illustrated by way of example only and not by way of example in the description and the drawing, but includes all variations, modifications, substitutions and combinations that the skilled person the present documents in particular in the context of the claims and the general representations in the introduction This description and the description of the embodiments can be found and combined with his expert knowledge and the prior art. In particular, all the individual features and design possibilities of the invention can be combined.

Claims

claims

1. Chair (1) with a chassis (2), a subsequent abge ^¬ assisted seat part (8) having a seating surface (9) and a Rü ^¬ backrest (14) in the region of an edge of the seat part (8) at least approximately is arranged perpendicular to the seat surface (9) and contains a contact surface (15) for the back of a person sitting on the chair (1),

characterized,

in that the backrest (14) is designed such that it can be pivoted sideways about a pivot axis (13) extending at least approximately perpendicular to the contact surface (15) of the backrest (14).

2. chair (1) with a base (2), a abge ^¬ supported seat part (8) with a seat surface (9) and a Rü ^¬ ckenlehne (14), in the region of an edge of the seat part (8) at least approximately perpendicular to the seat surface (9) angeord ^¬ net and a contact surface (15) for the back of a seated on the chair (1) person,

characterized,

in that the backrest (14) is designed such that it can be pivoted laterally about a pivot axis (13) through the contact surface (15) and at an angle in the range of 60 ° to 120 °, preferably 70 ° to 110 °, in particular preferably 80 ° to 100 °, perpendicular to the floor on which the chair (1) stands.

3. chair (1) according to claim 1 or 2,

characterized,

that the pivot axis (13) in the range of 0 cm to about 30 cm, preferably about 2 cm to about 15 cm, especially Preferably, about 5 cm to about 7 cm, above the seat (9) is arranged.

Chair (1) according to one of the preceding claims,

characterized,

the pivot axis (13) can be adjusted in height to a predetermined extent relative to the seat part (8) and / or to the backrest (14).

Chair (1) according to one of the preceding claims,

characterized,

provision is made for rear part devices by means of which the backrest (14) is forced into a central, normal position, wherein the rear part devices preferably have linear or progressive force characteristics and / or have a predetermined or presettable restoring force.

Chair (1) according to one of the preceding claims,

characterized,

in that locking devices are provided which hold the backrest (14) in a central, normal position and permit lateral pivoting of the backrest (14) only from a predetermined or specifiable adjusting force.

Chair (1) according to one of the preceding claims,

characterized,

that in particular adjustable pivot limits for the lateral pivoting movement of the backrest (14) are provided.