WO2011144507A1

WO2011144507A1 - Item of seating furniture

Info

Publication number: WO2011144507A1
Application number: PCT/EP2011/057576
Authority: WO
Inventors: Martin Bliem
Original assignee: Camarg Og
Priority date: 2010-05-20
Filing date: 2011-05-11
Publication date: 2011-11-24
Also published as: AT509317A4; WO2011144507A9; AT509317B1; EP2571472A1

Abstract

The invention relates to an item of seating furniture (10) having a seat surface (13) which can be height-adjusted and/or pivoted from a first position arranged substantially in a horizontal plane to a second position inclined with respect to the first position, wherein the seat surface (13) is connected to at least two guide elements which are arranged in the region of at least one supporting element, and wherein furthermore at least one guide element is designed as a spring element (16a, 16b), wherein the first guide element and the second guide element are arranged at an inclination to one another, and three, preferably four, chair legs (14a, 14a', 14b) are provided as supporting elements, wherein at least one spring element (16a, 16b) is arranged in the region of a chair leg (14a, 14a', 14b).

Description

seating

The invention relates to a chair with a seated from a first, arranged substantially in a horizontal plane position in a second position inclined to the first position and / or height adjustable seat surface, wherein the seat is in communication with at least two guide elements in the range of at least a support element are arranged, and wherein the further at least one guide element is designed as a spring element.

In order to facilitate elderly and / or impaired in their movement persons sitting in a chair or getting up from a chair, devices have become known in which the seat of a chair is variable in height. For example, GB 2 183 150 A describes a chair whose seat can be raised by depressing the armrests. A similar mechanism can be found in WO 98/52509 A1 or GB 2 266 838 A. In GB 276 255 A A further mechanism for lifting a seat of a chair is described, wherein here the raising of the seat takes place by means of an electric motor. Other similar devices can also be found in US 3,902,755 A, JP 2000-271173 A, US 5,063,617 A or DE 20 2004 000 048 U l.

A chair of the type mentioned above is further described in DE 20 2005 000 005 U l, in which below the Sitzmöbelsitzfläche at least one spring element is provided which compresses when loaded on the seat and the stored energy when the person stands up to support of the stand-up process again.

The seating furniture described in the prior art with set-aside and / or stand-up aids are constructed in some cases complicated and also often only partially suitable for use in physically impaired persons.

It is therefore an object of the invention to overcome the above-mentioned disadvantages of the prior art and to provide a chair with improved seat and stand-up.

This object is achieved in that the first guide member and the second guide member are arranged inclined to each other and three, preferably four chair legs are provided as support elements, wherein at least one spring element is arranged in the region of a chair leg. The speaking angle is optimally between 2 ° and 8 °. In the seating according to the invention, the seat in the unloaded (upper) state by the inclination of the spring elements to each other not horizontally, but arranged inclined forward so that the person who wants to sit on this seating, lean only against the seat and then the For example, shift the weight to the rear in the direction of the backrest. Here, the seat lowers by the action of weight and is brought simultaneously when lowering from the inclined position in a horizontal position. When standing up, the seat is again raised due to the spring force and at the same time tilted forward to facilitate leaving the chair. Here, three, preferably four chair legs are provided as support elements for the seating, wherein at least one spring element is arranged in the region of a chair leg. In this way, a space-saving and safe construction of the lifting mechanism for the seat is obtained.

Preferably, it is provided that the seating surface has a rear seating area and a front seating area, wherein the rear seat area in a rear stop communicates with the first guide element and the front seating area in a front stop with the second guide element, and the two stops have different distances with respect to the horizontal plane formed by the seat. Thus, the seat is guided controlled in the respective positions, wherein the seat follows a substantially elliptical curve in particular during the rising process, which corresponds to the natural movement sequence when getting up. This means that the rear part of the seat surface is raised more in the upward movement than the front part, so that the seat surface tilts forward.

Due to the inclination of the guide elements to each other and arranged at different heights attacks the connecting line between the front and rear stop, which is preferably arranged on a front chair leg, with this chair leg an acute angle, preferably between 70 ° and 86 ° and especially preferably between 76 ° and 80 °.

A particularly simple and at the same time safe construction of the seat according to the invention is achieved when the spring element is a gas spring, wherein the at least one front and at least one rear stop preferably each have a sliding bearing as guide elements.

In order to move a person sitting in the seat more easily with the seat or move, is particularly preferably provided that the Chair legs are arranged rollers, wherein at least two rollers, preferably the rear rollers, each having a braking device. This braking device has the particular task of fixing the seating in its position, especially if a person wants to sit in the chair or get out of it.

In a particularly preferred embodiment of the invention, it is provided that the at least one braking device of a chair leg cooperates with the pressure tube and / or piston rod of the at least one gas spring. Thus, the seat is automatically braked, as long as the seat of the chair raised, d .h. not in the horizontal position at (weight) load is.

However, in order to change the location of the chair without weight load of the seat, a brake release unit is particularly preferably arranged in the region of a back of the chair, in particular push buttons are at least one connecting rod with the braking device in combination. By operating the push buttons, which can also be designed to be latched, the brake of the braking device is released, and the seating can be moved without, for example, a person is on it. Instead of snaps, for example, release lever, etc. may be provided.

In a further embodiment of the invention, a locking device for the seat is additionally provided. This allows a fixation of the seat in the horizontal lowered position, without the seat is loaded with a weight. In this way, the braking device described above is particularly preferably achieved and the seating can be moved from the place without the seat is loaded.

In this case, the brake device and the seat surface lock work particularly preferably independently of one another. Thus, for example, the seat can be fixed with the blockable gas springs in a central position, ie at mid-height, without thereby solve the return brakes.

A particularly simple and safe use of the seat according to the invention is given when the seat is made in two parts, wherein the larger rear seat is connected via an articulated connection with the narrower front seat in combination. In this embodiment of the invention it is provided that in the upper position of the front seat of the seat is rounded and more inclined forwardly so that the sitting is further facilitated. In the following the invention will be explained in more detail with reference to a non-limiting embodiment with associated figures. Show:

Fig. 1 is a partially sectioned side view of a first embodiment of the seat according to the invention;

Fig. 2 is a view of the seat of FIG. 1 from the front;

3 is a side view of a second embodiment of the seat according to the invention with the seat in an inclined position.

4 shows a side view of the seat according to the invention from FIG. 3 with the seat in a horizontal position;

Fig. 5 is a sectional detail view of a chair leg of the chair of Figs. 3 and 4;

Fig. Figure 6 is a side view of a third embodiment of the seat according to the invention with the seat in the inclined position. and

Fig. 7 is a side view of the seat according to the invention of FIG. 6 with the seat in the horizontal position.

In Figs. 1 and 2, a first embodiment of the seat 10 according to the invention is shown, which has a backrest 11, armrests 12 and a seat surface 13, which in this variant of the invention are preferably made in one piece as a so-called seat shell, for example made of plastic. In Figs. 1 and 2, this seating 10 according to the invention in the horizontal position of the seat 13, as it usually under weight load, for example, by a person sitting in the seat 10 person shown.

The seat pan is arranged between four support elements in the form of chair legs 14a, 14a ', 14b, which are hinged in pairs on each side of the seat pan, so that the seat pan can be pivoted from the horizontal position. In each chair leg 14a, 14a ', 14b, a sliding bearing 15a, 15b is arranged as a guide element, which allows this pivoting movement. Furthermore, in each case a spring element 16b is arranged in the rear (ie the backrest 11 facing) chair legs 14b, with the aid of the spring force of which the pivotal movement of the seat surface 13 or the seat shell is triggered. Against this spring force, the seat 13 is pivoted to the position shown in the figures, when a person in the seating 10 takes place. The front and rear chair legs 14a, 14b are each inclined at an acute angle φ of about 2 ° to 8 ° to each other. It can be clearly seen that a line L connecting the two stops, here the slide bearings 15a, 15b, encloses an acute angle α with the front chair leg 14b, whereby the inclined position of the seat surface 13 in the unloaded state is obtained. By appropriate shaping of the guide elements 15a, 15b and the spring elements 16b, the seat 13 can not only be pivoted, but optionally be changed in height.

A further variant of the seat 10 according to the invention is shown in Figs. 3 and 4 shown in a side view. It has a back 11, armrests 12 and four chair legs 14a, 14b, which are each provided with rollers 17a, 17b for moving the seat 10. Here, it is provided that the front rollers 17a are designed to be laterally rotatable, while the rear rollers 17b are not rotatable, but are provided with a braking device 18.

The seating 10 is provided with a height-adjustable seat 13, wherein gas springs 16a, 16b disposed in the chair legs 14a, 14b change the height and orientation of the seat 13.

A rear seat 13b of the seat 13 is connected to a rear slide bearing 15b slidably disposed in the rear chair leg 14b. In Fig. 3, the seat surface 13 is shown in the upper, unloaded position, in which the seat surface 13 is inclined forward (i.e., away from the back 11), while in Fig. 4, the seat surface 13 in the lower , horizontal seating position is shown.

In the rear chair leg 14b, a sliding bearing 15b and the gas spring 16b are arranged, wherein the rear seat portion 13b of the seat 13 is in communication with the sliding bearing 15b.

The front gas pressure spring 16a is connected to the seat surface 13 via a connecting element 19, in which case again the abutment of the connecting element 19 takes place in a front slide bearing 15a of the front gas spring 16a in the front chair leg 14a.

In the Fig. 3, it can be seen that the seat surface 13 is arranged inclined forward, which is achieved in this embodiment of the invention in that the rear attachment point of the seat 13, here the slide bearing 15 b, substantially in the plane of the seat 13th is arranged, while the front lifting point, in this embodiment, the front sliding bearing 15a, spaced from the seat plane is arranged. At the same time, the rear gas pressure spring 16b has a longer spring travel than the front gas pressure spring 16a. This inclined position of the seat 13 facilitates sitting down for impaired in their movement people essential. In some cases, it is desirable that the seat 13 remains in the lower position even without weight load. For this purpose, a locking device 21 is arranged in the region of a between the rear chair leg 14b and the front chair leg 14a substantially horizontally disposed connecting element in the form of a cross member 20, by means of which the seat surface 13 in the Fig. 4 position shown can be fixed. For this purpose, this locking device 21 has a locking hook 211 which, when the seat surface 13 is lowered, engages in a receptacle 212 and can be released again with the aid of an unlocking lever 213 if necessary.

In order to prevent the seating 10 from moving or rolling away, in particular, when the person gets up or gets in, a braking device 18 is provided, which can be seen in detail in FIG. Here, a brake pad 181 acts on the rear roller 17b braking, wherein the brake pad 181 is housed together with the roller 17b in a roller housing 170 at the lower end of the chair leg 14b. One end of the brake pad 181 is disposed on a plunger 182 which communicates via a pressure spring 183 disposed about the plunger 182 with the pressure tube 161 of the gas spring 16b from which the piston rod 162 protrudes.

If the seat surface 13 of the seat 10 according to the invention is more than 40 mm away from the lower sitting position (FIG. 4), for example, the push rod 182 is pushed upward by the compression spring 183. This causes the end of the brake pad 181 in communication with the plunger 182 to be pulled up so that the brake pad 181 is rotated so that its front edge is brakingly applied to the roller 17b.

The shape of the brake pad 181 is selected such that when the seat 10 is moved rearward, with the roller 17b moving in the direction of the brake pad 181 according to the arrow P in FIG. 5, the brake pad 181 becomes wedged in the usually elastic roller 17b and none further movement of the seat 10 (in particular to the rear) is possible. However, this wedging takes place in the illustrated braking device 18 only in a backward movement of the rear roller 17b, which can be done for example when sitting down or getting up from the seating 10. Thus, the seating 10 is secured against unwanted (reverse) movement, while at the same time a forward movement can be done without noticeable resistance.

Now, a person sits in the chair 10 according to the invention, the pressure tube 161 of the gas spring 16b moves down and acts on the plunger 182, so that the rear end of the pad 181 moves down and the front edge of the pad 181 of the Roller 17b is moved away. Thus, the braking device 18 is unlocked, and a movement of the seat 10 with a person thereon is possible without resistance. As soon as the person leaves the seating 10, the pressure tube 161 is in turn moved upward, so that the plunger 182 can also move upwards due to the spring force of the compression spring 183 and acts on the roller 17b as described above as a result of the brake pad 181. As a result, the seating 10 is also secured against unintentional rolling away.

Of course, the not shown side of the seat 10 according to FIGS. 4 and 5 have the same structure as the above-described side of the chair 10. Alternatively, however, can also be provided that only two spring elements are arranged in the four chair legs, while in the other two chair legs guide elements, in particular sliding bearings are provided.

The in FIGS. 6 and 7 illustrated third embodiment of the seat according to the invention 10 has a substantially same structure as that in Figs. 3 and 4 illustrated variant.

The difference is that here the seat surface 13 is made in two parts, consisting of a front seat portion 13a and a rear seat portion 13b, these seat portions 13a, 13b are hinged together. In the unloaded position (Figure 6), the rear seat 13b is level with the armrest 12 and is oriented substantially horizontally or slightly inclined forward. The front seat portion 13a, which is connected to the rear seat portion 13b by way of, for example, a hinge-type connector, is inclined more toward the front. This stronger inclination is achieved by a guide 22, which is rotatably disposed on the connection element 20 at its end facing away from the front seat area 13a.

This provides a further relief for persons when seated in the seating furniture 10 according to the invention, wherein the front seat area 13a is curved towards the floor and at the same time inclined more towards the front in the unloaded position (FIG. 6). This means people do not have to sit on the edge of the seat and then slide back. Advantageously, in this case the front seating area 13a is made substantially narrower than the rear seating area 13b.

As soon as the rear seat 13b is raised due to the spring force of the rear spring 16b, the front seat 13a is bent down, the guide 22 being connected to the cross brace 20 and the front seat 13a by means of hinges. Thus, the movement of the front seat area 13a defined exactly. In the upper position of the seat 13, it inclines downward and in the lower position of the seat 13 (Fig. 7), it is horizontal.

The seat 10 further has in this embodiment, a seat surface lock 23, which causes a blockage of the gas springs 16a, 16b. The trigger 231 is for this purpose on the front side of the armrest 12, wherein a mounted lever 232 and a connection 233 in or on the chair leg 14a to a lower joint 234 pass the movement of the trigger 231 and in this way the trigger of the gas spring 16a Press the underside of the piston rod 162a. In this way, the front gas spring 16a is blocked and the person sitting in the seat 10 person is not thrown out of the seat when it tilts forward, for example, pick something up from the ground, thereby relieving the seat 13.

In a further, not shown embodiment of the invention, a brake release unit for releasing the brake device is provided. In this case, the brake plunger 182 is moved downward upon actuation of the push buttons via a connecting rod, which can be actuated via push buttons located in the region of the backrest, and thus the brake device 18 is released. As a result, the chair according to the invention can optionally be moved away without the seat having to be moved to the lower position.

It is understood that the present invention is not limited to the above-described embodiments. In particular, it may be provided that only two spring elements are provided for the movement and inclination of the seat, as well as the design of the chair is in itself hardly limits regarding chair legs, backrests, armrests and the like set. In particular, instead of the chair legs described in the exemplary embodiments, flat support elements, which are formed, for example, in one piece with the armrest, can also be used. Likewise, other spring elements can be used as the described gas springs. Essential to the invention is that at least two guide elements, of which at least one is designed as a spring element, are designed inclined to each other.

Claims

PATENT APPLICATIONS

1. Seating furniture (10) with one of a first, arranged substantially in a horizontal plane position in a second position inclined to the first position pivotable and / or height adjustable seat surface (13), wherein the seat surface (13) with at least two guide elements in connection standing, which are arranged in the region of at least one support element, and further wherein at least one guide element as a spring element (16a, 16b) is formed, characterized in that the first guide member and the second guide member are arranged inclined to each other, and three, preferably four Chair legs (14a, 14a ', 14b) are provided as support elements, wherein at least one spring element (16a, 16b) in the region of a chair leg (14a, 14a', 14b) is arranged.

2. Seating furniture (10) according to claim 1, characterized in that the seat surface (13) has a rear seat portion (13b) and a front seat portion (13a), wherein the rear seat portion (13b) in a rear stop with the first guide member and the front seat portion (13a) communicates with the second guide member in a front stop, and the two stoppers have different distances with respect to the horizontal plane formed by the seat surface (13).

3. Seating furniture (10) according to claim 1 or 2, characterized in that the spring element (16a, 16b) is a gas spring, wherein the at least one front and at least one rear stop preferably each have a sliding bearing (15a, 15b) as a guide element.

4. Seating furniture (10) according to one of claims 1 to 3, characterized in that on the chair legs (14a, 14a ', 14b) rollers (17a, 17b) are arranged, wherein at least two rollers, preferably the rear rollers (17b) , each having a braking device (18).

5. Seating furniture (10) according to claim 4, characterized in that the braking device (18) with the pressure tube (161) and / or the piston rod (162) of the gas pressure spring (16b) cooperates.

6. Seating furniture (10) according to claim 4 or 5, characterized in that in the region of a backrest (11) of the seat (10) a brake release unit is arranged, in particular push buttons via at least one connecting rod with the braking device (18) are in communication.

7. Seating furniture (10) according to one of claims 1 to 6, characterized in that in addition a locking device (21, 23), preferably a cooperating with the gas spring (16a) trigger (231), is provided for the seat surface (13).

8. Seating furniture (10) according to one of claims 1 to 7, characterized in that the seat surface (13) is made in two parts, wherein the larger rear seat portion (13b) via a hinged connection with the narrower front seat area (13a) is in communication ,

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