EP2721965A1 - Seating furniture with anti-twist device - Google Patents

Abstract

The active dynamic seat furniture has pendulum joint and seat which are rotatably mounted relative to the foot portion. A pendulum column (4) for supporting the seat is connected for conjoint rotation with the pendulum joint. The pendulum column designed to be resilient in a height direction H has anti-rotation unit which rotationally immobilize the pendulum column relative to the seat, such that pendulum column and seat are rotated relative to foot portion only together with rotatable pendulum joint.

Description

The invention relates to a chair, in particular an active dynamic seating according to claim 1. The invention relates in particular to an active dynamic seating with a twist.

In the prior art, various seating furniture are known, which are designed so that the body sits in a anatomically comfortable position by appropriately designed seats and backs. Although such seating is often perceived as pleasant and comfortable, they have crucial disadvantages.

When sitting on such seating furniture is a passive sitting, i. the muscles in the back is little to no stress and the discs are loaded statically on pressure. As a result, wear in the intervertebral disc, degeneration of the back muscles and health damage, as well as pain may occur.

For this reason, dynamic, in particular active-dynamic seating devices have been developed, which allow active passive sitting against passive sitting. In active dynamic sitting, the back muscles and the intervertebral discs are always in action. When sitting on an active dynamic seating device, the seat occupant is always required to balance the balance and with the body constantly back and forth to tilt and thus perform pendulum movements of the seat, similar to the upright aisle. Both the legs and the entire upper body are constantly or at least regularly in interaction and the muscle groups involved are thus actively activated. Furthermore, the seat occupant is urged to always sit upright and regularly alter the posture, thereby stressing the intervertebral discs not statically but with varying loading and nutrients.

DE-GM 731114 describes an active dynamic seating device with a seat part, which is connected via a first tilting joint with a support shaft, wherein the support shaft is in turn articulated by means of a second tilting joint on the foot part of the seat device. In this case, each tilting joint preferably consists of a respective cap formed at the end of the support shaft, which is guided in a hollow cylinder and acted upon by a helical spring arranged in the hollow cylinder.

Another seat device is known from the document DE-GM 1829791. This seat device is designed as a pendulum chair and therefore has a back and forth swivel seat. The seat itself is rigid with an intermediate piece and a foot part connected, wherein the intermediate piece is pivotally mounted on the foot part.

With the DE-GM 1787342 another seat is known, which is designed as a single-seat. This Einbeinsitz includes a footboard, an intermediate piece and a seat part. Between the foot part and the intermediate piece a spring element is arranged, which allows a swinging or swinging of the intermediate piece with the seat part from the normal position. This allows the seat occupant to oscillate back and forth between the normal position and the deflected position.

With active dynamic seating, it is necessary that the seat occupant can use the chair safely. In particular, it is intended to prevent the seat occupant from falling down from the seat when commuting backwards or even tipping over with the entire seating furniture.

For this purpose, a seating furniture is proposed with a device for defining a reverse direction R, in which the pendulum joint is deflected differently depending on the relative deflection direction for orientation of the device and wherein a safety device is provided, which has a lower. limited deflection of the pendulum column in the reverse direction allows, as is the case in other directions.

Such, provided with a safety device, active dynamic seating furniture therefore allows a limited pendulum movement in at least one direction, in particular in a direction to the rear. If such seating furniture comprises e.g. With a backrest and a seated user leaning against the seatback, the seat can make only a slight backward deflection, thereby ensuring that the user does not tip over or over.

In such seating but the problem is that when turning the Seat also changes the location of the security device. If the seat user rotates the rotatably mounted seat, for example, by 90 ° or 180 °, then the same position shifts with the limited deflection, relatively by the same angular amount. It is no longer ensured that limited by the safety device deflection to the rear, depending on the rotation of the seat is not located in the backward position but in a rotated position of rotation.

However, there is a need for active dynamic seating in which the seat is freely rotatably mounted and the seat occupant regardless of the relative position of the seat would like to use the seating safely.

Thus, the invention has for its object to provide an active dynamic seating with swivel seat that allows safe use of the chair, the active-dynamic seating easy to procure and should be usable in a simple manner by a seat occupant.

This object is achieved with a chair according to claim 1. The basic idea of the present invention is to provide a chair in particular active dynamic seating with a rotatable seat and a pendulum column, with anti-rotation are provided on the pendulum column, which rotationally fixed the pendulum column against the seat, such that the pendulum column and the seat can only rotate together with the rotatable pendulum joint relative to the foot part. When using a pendulum joint with a safety device as described above, this ensures that the seat can be deflected regardless of its rotational orientation only with the deflection limited by the safety device to the rear.

According to the invention, therefore, there is provided a seating furniture, in particular active dynamic seating furniture, which has the following:

A foot part with a relative to the foot rotatably mounted pendulum joint, a pivotally mounted relative to the base seat, a seat supporting pendulum column, the pendulum column is rotatably connected to the pendulum joint, the pendulum column is formed resiliently in the height direction H, and inventive anti-rotation means on the Pendulum column are provided which fix the pendulum column against rotation relative to the seat, so that the pendulum column and the seat can only rotate together with the rotatable pendulum joint relative to the foot.

According to the invention, the anti-rotation means are provided on the pendulum column, that the seat, the pendulum column and the pendulum joint rotatably connected to each other, whereby upon rotation of the seat by an angle α automatically the pendulum joint by the same angle α is rotated and thereby always ensured in that the (limited) deflection possibility provided in a certain direction is guaranteed to the rear. Advantageously, therefore, a device for defining the reverse direction is provided, which is particularly preferably arranged on the seat.

The pendulum column of the seating furniture according to the invention preferably also has the following:

A tubular bearing bush, a spring leg movable up and down in the bearing bush, which comprises a gas pressure spring and a helical spring which is arranged between an upper and lower spring receptacle of the pendulum column. Advantageously, the lower spring receptacle is adjustable in height.

By the gas spring ensures that on the one hand, the seat height is continuously adjustable, while on the other hand via the coil spring, the spring property (spring hardness) of the resilient pendulum column can be adjusted. By screwing the lower spring retainer relative to the upper spring retainer, the interposed coil spring can be adjusted with its spring force.

Advantageously, the pendulum column further at the lower end of a tubular bearing bush, which is connected to a leg and the leg with the pendulum joint, wherein the up and down movable strut is preferably guided through the bearing bush. In a particularly advantageous embodiment of the invention, the connection between the bearing bush and the pillar is designed as a conical connection. Further advantageous within the bearing bush a plurality of bearing rollers are arranged along which the strut is movable up and down. Preferably, an upper and lower bearing roller level is provided in which a plurality of radially rotating bearing rollers are arranged on bearing cages within the bearing bush, so that a liquid up and down movement is ensured.

In an embodiment according to the invention, an anti-rotation means extending in the height direction H is arranged externally on the strut, which is rotatably mounted on bearing bush side anti-rotation means, so that the strut can perform an up and down movement in height direction H, but no rotational movement in the bearing bush. Since the strut is rotatably connected as part of the pendulum column with the seat, is ensured by such a rotation, that the shock absorber and thus connected to the strut seat only rotate together with the pendulum joint.

Advantageously, at least one of the bearing bush side anti-rotation is formed as a rotatable bearing roller, which is mounted in a roller cage.

Furthermore, the anti-rotation means is advantageously provided with at least one guide surface which is in contact with a roller end face of one of the rollers.

In a particularly preferred embodiment, preferably two bearing bush side anti-rotation means each with a rotatably mounted on a roller cage bearing roller and opposite roller end faces formed and the anti-rotation means is arranged with its preferably two lateral guide surfaces between the roller end faces of the bearing rollers. In this way, the anti-rotation means extending in the height direction H can be supported with its lateral guide surfaces during the up and down movement against the roller end faces of the bearing rollers and a twist protection is provided over the entire height movement (height H) of the anti-rotation means.

This has the advantage that the strut, while a movement within the bushing in the height direction H can perform, but a rotational movement due to the anti-rotation over the entire height of extending in the height direction H anti-rotation is prevented.

Preferably, a plurality of bearing rollers are arranged in the bearing bush that their roller end surfaces preferably rest against the outer jacket of the shock absorber and their rotation axes A are each perpendicular to the height direction H, so that the strut in the vertical direction H along the bearing rollers can be operated up and down.

In a particularly advantageous embodiment, the components used with respect to their tolerance positions are coordinated so that on the one hand a backlash-free operation of the moving parts is possible and at the same time a rattling or jerking of the movable part is prevented.

Advantageously, therefore, the gas spring is at least partially surrounded by a tubular adapter and is positively connected thereto. Particularly advantageous as a tubular adapter, an aluminum tube preferably a precision aluminum tube is used, the outer circumference receives a predetermined Präzisionsmaß and on the inner wall plastically deformable structures are formed, by means of which the tubular adapter is fixed non-positively and thus rotatably on the outer surface of the gas spring. This ensures that the tolerances occurring in the outer circumference the gas spring can be compensated.

In a particularly favorable form of use, the gas spring has a first (lower) portion, on which the gas spring is surrounded by a tubular adapter and a second (upper) portion, on which the gas spring is rotatably connected to the seat support of the seat.

In a further advantageous embodiment, the tubular adapter is formed by a metallic sliding tube, e.g. Edelstahlroh positively surrounded and is rotatably connected thereto, wherein the lower opening is preferably closed with a metal disc as a central shaft and it is attached to one end of the gas spring. This prevents a rotational movement of the gas spring.

The strut preferably comprises the gas spring, the adapter and the adapter enclosing the sliding tube, which are all rotatably connected to each other. Due to the above-described design of the strut, the positions of the bearing rollers are to be matched only to the outer diameter of the sliding tube.

In a particularly advantageous embodiment, the tubular bearing bush is conical. The bearing rollers with their bearing cages thus stand out differently far from the inner shell of the conical bushing, however, while the faces of the bearing rollers of all bearing rollers are in a roll position as points on a circle with a diameter D corresponding to the outer diameter D of the sliding tube.

Advantageously, the pendulum column has a coil spring which is arranged between an upper and lower spring receptacle, wherein the lower spring receptacle is formed with a thread which cooperates with a thread on the leg and is secured thereto. Since the lower spring retainer is adjustable in height, so can the spring force of the coil spring be customized for each seat user.

In a further advantageous embodiment of the invention, the seat has a device for defining the rearward direction R. The pendulum joint is deflected to different degrees relative to the orientation of the device for defining the reverse direction. A safety device is preferably provided in the return direction, which allows a smaller deflection of the pendulum column, as in deviating (other) directions. By such means, the seat occupant can ensure that he is sitting in the correct orientation on the seat with his back facing towards the means for defining the backward direction.

Particularly suitable as a device for defining the backward direction R is a backrest. In this way, a particularly safe active dynamic seating can be provided, which allows the seat occupant to perform safe oscillations regardless of the rotational position of the rotatable seat.

Fig.1

eine seitliche Schnittansicht eines aktivdynamischen Sitzmöbels mit einer Pendelsäule;

Fig.2

eine Schnittansicht eines Details der Verbindung der Pendelsäule mit dem Pendelgelenk und dem Fußteil;

Fig. 2a

eine Schnittansicht durch das Pendelgelenk in einer nicht ausgelenkten Lage;

Fig. 2b

eine Ansicht ähnlich Fig. 2a, bei der die Pendelsäule nach Rückwärts ausgelenkt ist;

Fig. 2c

eine Ansicht ähnlich Fig. 2b, bei der die Pendelsäule nach Vorwärts ausgelenkt ist;

Fig. 3

Aufsicht auf einen Stuhl mit einer Schar von Auslenkungsvektoren;

Fig. 3a

ein Detail aus Fig. 3;

Fig. 4

eine Seitenansicht einer Pendelsäule;

Fig. 4a

eine Schnittansicht durch eine Pendelsäule entlang der Schnittlinie A-A aus Fig. 4;

Fig. 4b

eine Schnittansicht entlang der Schnittlinie B-B aus Fig. 4a;

Fig. 4c

eine Schnittansicht entlang der Schnittlinie C-C aus Fig. 4a;

Fig. 5

eine Schnittansicht ähnlich der Fig. 4a;

Fig. 5a

eine Schnittansicht entlang der Schnittlinie B-B aus Fig. 5;

Fig. 5b

eine Schnittansicht entlang der Schnittlinie C-C aus Fig. 5;

Fig. 5c

eine Schnittansicht entlang der Schnittlinie D-D aus Fig. 5.

Advantageous embodiments of the invention are specified in the dependent claims and are explained in more detail below with reference to the described embodiments with the aid of the figures. Hereby show:

Fig.1

a side sectional view of an active dynamic seat with a pendulum column;

Fig.2

a sectional view of a detail of the connection of the pendulum column with the pendulum joint and the foot part;

Fig. 2a

a sectional view through the pendulum joint in an undeflected position;

Fig. 2b

a view similar Fig. 2a in which the pendulum column is deflected backwards;

Fig. 2c

a view similar Fig. 2b in which the pendulum column is deflected forward;

Fig. 3

Top view of a chair with a crowd of deflection vectors;

Fig. 3a

a detail from Fig. 3 ;

Fig. 4

a side view of a pendulum column;

Fig. 4a

a sectional view through a pendulum column along the section line AA Fig. 4 ;

Fig. 4b

a sectional view taken along the section line BB Fig. 4a ;

Fig. 4c

a sectional view taken along the section line CC Fig. 4a ;

Fig. 5

a sectional view similar to the Fig. 4a ;

Fig. 5a

a sectional view taken along the section line BB Fig. 5 ;

Fig. 5b

a sectional view taken along the section line CC Fig. 5 ;

Fig. 5c

a sectional view taken along the section line DD Fig. 5 ,

In the sectional view according to Fig. 1 an inventive first embodiment of an active dynamic seat 1 is shown. The seat 1 has a foot part 2, with a pendulum joint 10 mounted on the foot part 2. The pendulum joint 10 is rotatably mounted on the foot part 2. Furthermore, the seating 1 has a rotatably mounted seat 3, which is designed to be rotatable relative to the foot part 2. The seat 3 is supported by a pendulum column 4, wherein the pendulum column 4 is rotatably connected to the pendulum joint 10. The pendulum joint 10 is formed in the present embodiment as a multi-directional pendulum joint 10. This means that oscillations in a forward, backward and sideward direction are possible, as well as in any intermediate directions. The multidirectional pendulum joint is hereinafter generally referred to as pendulum joint 10. In the Fig. 1 shown pendulum column 4 is resilient in the height direction H. The pendulum column 4 is connected via a Standbeim 14 with the pendulum joint 10. Below the seat 3 is a seat support 6, which is rotatably connected to the pendulum column 4.

Furthermore, it can be seen that a gas pressure spring 42 is arranged within the pendulum column 4 in order to adjust the height of the rotatable seat 3. The upper end 42 a of the gas spring 42 is rotatably connected to the seat support 6. In the present embodiment, the rotationally fixed connection was made by means of positive and non-positive connection between the outer jacket of the gas spring 42 and the inner shell of a receiving cylinder on the seat support 6.

At the seat 3, a backrest 7 is further attached. In the present case, the backrest 7 is rotatably connected to the seat support 6. This means that when turning the seat 3, the backrest 7 is always moved.

As a rotationally fixed connection in the context of the present invention, all compounds are referred to, in which two adjacent components are interconnected so that either a form, material or non-positive connection is provided or alternatively the connected components are mechanically interconnected so that the rotation of the a component is connected by an angle α with the rotation of the second component by the same angle α.

In Fig. 2 is a detail from Fig. 1 shown. The detail shows the foot part 2 with the pendulum joint 10 and the lower part of the pendulum column 4. At the foot part 2, the pendulum joint 10 is rotatably mounted relative to the foot part 2. Furthermore, the foot part 2 has a receptacle 11, namely a rigid receptacle 11. In the receiving pot 11, an elastic joint cup 12 is arranged. In the pivot cup 12, the leg 14 is introduced, such that the pillar 14 can perform pendulum movements within the joint cup 12, as this closer in the Fig. 2a to 2c to be discribed. The leg 14 has at its upper end on a leg end 14a. In the present case, the upper end of the support leg end 14a is conical. The pivot cup 12 has a deflection limit 13. The function of the deflection limit 13 is in connection with Fig. 3 and Fig. 3a explained in more detail.

How out Fig. 2 it can be seen, the lower end of the pendulum column 4 is connected to the leg end 14a via a conical connection. The connection is made via a substantially tubular bearing bush 47, which is open on both sides. In the present embodiment, both the lower bearing bush portion of the bearing bush 47 and the upper bearing bush portion of the bearing bush 47 are each conical. The lower bearing bush portion 47b has on its outer shell a thread 17a, as in the embodiments according to Fig. 4a and Fig. 5 is apparent. On the external thread 17a on the bearing bush 47, a lower spring receptacle 46 is screwed with an internal thread 17b. The lower spring retainer 46 has at its upper side a support 18 for receiving a coil spring 15. As in Fig. 2 can be seen, the lower end of the coil spring 15 is in the groove 18 formed as a support. Through the bearing bush 47, a strut 40 is guided with its lower end. The strut 40 will be detailed later in connection with Fig. 4a and Fig. 5 described.

The Fig. 3 shows an active dynamic seating 1 from above. In particular, the seat 3 and the backrest 7 and the foot part 2 are apparent. The seat 3 exemplarily shows a family of deflection vectors 70 of the pendulum column 4. The length and thus the amount of the respective deflection vector 70 indicates the possible maximum deflection in the vector direction respectively shown. As in the detail in Fig. 3a can be seen, the direction is on the left is referred to as the reverse direction R and the opposite direction to the right is referred to as the forward direction V. Further, a device 16 for defining the backward direction R is provided, which is designed here as a backrest 7 or part of the backrest 7. In the Fig. 3a Arrows directed vertically upwards and downwards indicate the possible deflections in the sideways direction S of the pendulum column 4. In the reverse direction R, a minimum deflection is possible, while in the forward direction V, a maximum deflection is possible. Any deflections that lie between the backward direction and the forward direction allow a continuously increasing deflection, as represented by the deflection vectors 70 representatively. The means 16 for defining the backward direction is provided that a seat occupant can safely determine in which position he should sit on the chair 1. If the correct sitting position is taken, the active dynamic seating 1 can after Fig. 3 according to the vectors in Fig. 3a be used oscillating. The seat occupant can therefore make pendulum movements to the rear (in the reverse direction R) and in any other direction. If he bends forward in the forward direction V, he can thereby cause a defined, maximum deflection of the pendulum column 4. The device 16 for defining the reverse direction R is in the present embodiment after Fig. 3 a backrest 7.

In the Fig. 2a to 2c By way of example, different deflections of the pendulum column 4 or of the supporting leg end 14a, which is connected to the pendulum column 4, are shown. In Fig. 2a the pendulum joint 10 and thus the support leg end 14a is shown in a vertical undeflected position. While in the Fig. 2b and 2c in each case a pendulum movement is shown in reverse and forward. By suitable design of the Auslenkungsbegrenzung 13 of the joint cup 12, as exemplified in the Fig. 2 shown, the deflection can be limited in a certain direction such as the reverse direction R. The Auslenkungsbegrenzung 13 has therefore the Function to prevent the pendulum column 4 is limited in said direction to a defined extent, so that a tilting of the seat occupant is prevented on the chair.

So that the device 16 for defining the reverse direction R is actually always in agreement with a deflection limitation 13, it must be ensured that the seat 3 with the pendulum column 4 and the device 16 only together with the deflection limit 13 and thus together with the pendulum joint 10 turn. For this purpose, anti-rotation means 51, 52, 53 according to the invention are provided on the pendulum column 4. The Fig. 4 shows a side view of an embodiment of a pendulum column 4, which is resilient in height direction H. Within the pendulum column 4 is a strut 40. The pendulum column 4 further includes an upper spring retainer 45 which is connected to a tube member 49 and a lower spring retainer 46. Between the upper spring retainer 45 and the lower spring retainer 46, a coil spring 15 is arranged. The coil spring 15 can be biased by a rotatable adjustment of the lower spring retainer 46 more or less. The lower spring retainer 46 is as in Fig. 4a shown in height over the threads 17a, 17b relative to the bearing bush 47 adjustable.

The strut 40 includes the gas spring 42, which is surrounded by the tubular adapter 60. The tubular adapter 60 has on its inside not shown structures, with which it was pressed onto the outer jacket of the gas spring 42. As a result, the structures were plastically deformed and is a positive and non-positive connection between the adapter 60 and the gas spring 42 produced. To the adapter 60, a sliding tube 62 is arranged, which is fixed in rotation with the adapter 60 relative to the gas spring 42. In Fig. 5 It is shown that the gas spring 42 has a first portion 43, on which the gas spring 42 of the tubular adapter 60 is surrounded and has a second portion 43 to which the gas spring 42 is rotatably connected to a seat support 6 of the seat 3.

The strut 40 is guided up and down movable in the bearing bush 47. On the outer casing 41, an anti-rotation means 51 extending in the height direction H is screwed to the sliding tube 62 with screws 63. The anti-rotation means 51 cooperates with bearing bush side anti-rotation means 52 and 53 and prevents the rotation of the strut 40 relative to the bearing bush 47, as described in more detail in FIG Fig. 4c is shown.

The Fig. 4c shows a sectional view along the section line CC Fig. 4a The anti-rotation means 51 is screwed to the sliding tube 62 and projects like a web from the outer shell 41 thereof. As in the in Fig. 4a . 4b and 4c The anti-rotation means 51 is disposed between two bearing sleeve side anti-rotation means 52 and 53 and lies with its lateral guide surfaces 59 against the anti-rotation means 52, 53 at. The anti-rotation means 52, 53 used in accordance with this embodiment constitute bearing rollers 54, 55 which are fastened to the bearing bush 47 via roller cages 57. The rotation axis direction A is oriented so that the bearing rollers 54, 55 can be actuated with their roller end surfaces 56 along the guide surfaces 59. In this way, it is ensured that the spring strut 40 can perform an up and down movement in the height direction H, but no rotational movement relative to the bearing bush 47. The strut 40 is further guided within the bearing bush 47 by a plurality of bearing rollers 58. The present embodiments comprise an upper roller layer 20 and a lower roller layer 21, in which a plurality of bearing rollers 58 mounted in roller cages 57 circumferentially are. Furthermore, in Fig. 5 It can be seen that in the upper roller layer 20, the upper bearing rollers 58 are further protruding from the inner shell of the bearing bush 47 due to the conical shape of the bearing bush 47. In the present embodiment, four bearing rollers 58 are diametrically opposed in each of the upper roller layer 20 and lower roller layer 21, wherein two opposing roller end surfaces 56 of the opposite bearing rollers 58 are spaced at a distance corresponding to the outer diameter of the sliding tube 62. In this way, the sliding tube 62 is guided between the bearing rollers 58 without play. The Fig. 4b as well as the Fig. 5a to 5c show different sectional views through the pendulum column 4. In Fig. 4c It can also be seen that a support tube 48 is arranged around the bearing bush 47. Alternatively, the bearing rollers 58 can be completely held by the bearing bush 47, wherein the support tube 48 can then be arranged for example as a decorative tube around the bearing bush 47.

In the Fig. 5c an alternative embodiment of the bearing rollers 54, 55 as anti-rotation means 52, 53 is shown. The anti-rotation means 52, 53 are also formed as bearing rollers 54, 55. The rotation axis of the bearing rollers 54, 55 extends here in the direction of the lateral guide surfaces 59 of the anti-rotation 51. Advantageously, a minimal clearance between the side surfaces of the bearing rollers 54, 55 of the anti-rotation means 52, 53 and the guide surfaces 59 of the anti-rotation 51 is formed.

According to the invention, a plurality of anti-rotation means 51, 52, 53 can also be arranged on the pendulum column 4 in order to ensure, in the event of failure of an anti-rotation means, that another anti-rotation means prevents the seat from rotating relative to the pendulum joint 10.

In Fig. 4a It can also be seen that the lower end of the gas spring 42 b is connected to a closure plate 61. In the present case, the end plate 61 is further connected to the sliding tube 62. The end plate 61 is connected to a Collar 65 on the outer contour of the sliding tube 62 forth. The collar 65 is supported in the bearing bush against a corresponding paragraph, wherein between the shoulder and the collar 65, a damping element 64 is arranged.

The invention is not limited in its execution to the above-mentioned preferred embodiments. Rather, a number of variants is conceivable, which makes use of the illustrated solution even with fundamentally different types of use. Furthermore, details and combinations of preferred embodiments are the subject of the invention.

LIST OF REFERENCE NUMBERS

1

seating

2

footboard

3

Seat

4

pendulum column

6

seat support

7

backrest

10

pendulum joint

11

pot

12

pivot cup

13

Excursion Limiting

14

foothold

14a

Stand leg

15

coil spring

16

Device for defining the reverse direction

17a

thread

17b

thread

18

In stock

20

upper roll position

21

lower roll position

40

strut

41

outer sheath

42

Gas spring

42a

upper end of the gas spring

42b

lower end of the gas spring

43

first section

44

second part

45

upper spring retainer

46

lower spring retainer

47

bearing bush

47a

upper bushing section

47b

lower bushing section

48

support tube

49

pipe part

51

anti-rotation

52

anti-rotation

53

anti-rotation

54

bearing rollers

55

bearing rollers

56

Role face

57

roller cage

58

bearing roller

59

guide surfaces

60

adapter

61

closing panel

62

slide tube

63

screw

64

damping element

65

collar

70

displacement vectors

A

Rotation axis alignment

H

height direction

R

reverse direction

V

forward direction

S

sideways direction

Claims (16)

Seating furniture (1), in particular active dynamic seating (1), comprising: a. a foot part (2) with a relative to the foot part (2) rotatably mounted pendulum joint (10), b. a relative to the foot part (2) rotatably mounted seat (3), c. a pendulum column (4) carrying the seat (3), wherein the pendulum column (4) is non-rotatably connected to the pendulum joint (10), d. the pendulum column (4) is designed to be resilient in the height direction H and wherein e. Anti-rotation means (51, 52, 53) are provided on the pendulum column (4), which rotationally fixed the pendulum column (4) relative to the seat (3) set, so that the pendulum column (4) and the seat (3) only together with the Rotate the pendulum joint (10) with respect to the foot part (2). Seating furniture according to claim 1, characterized in that the pendulum column (4) further comprises a. a tubular bushing (47), b. a strut (40) which can be moved up and down in the bearing bush (47) and which comprises a gas pressure spring (42), c. a helical spring (15) which is arranged between an upper and lower spring receptacle (45, 46) of the pendulum column (4) and wherein the lower spring receptacle (46) is adjustable in height. Seating furniture according to claim 1 or 2, characterized in that the pendulum column (4) at the lower end of a tubular bearing bush (47) which is connected via a leg (14) with the pendulum joint (10). Seating furniture according to at least one of claims 1, 2 or 3, characterized in that the strut (40) can be moved up and down along bearing rollers (58) arranged within the bearing bush (47). Seating furniture according to at least one of the preceding claims, characterized in that on the outside of the strut (40) an anti-rotation means (51) extending in the height direction H is mounted, which is mounted on bearing bush side anti-rotation means (52, 53) such that the strut (40) an up and down movement in the height direction H, but can not perform rotational movement in the bearing bush (47). Seating furniture according to at least one of the preceding claims, characterized in that at least one of the bearing bush side anti-rotation means (52, 53) a rotatable bearing roller (58) is formed, which is mounted on a roller cage (57). Seating furniture according to at least one of the preceding claims, characterized in that the anti-rotation means (51) on the strut (40) at least one guide surface (59) formed along the roller end face (56) of the anti-rotation means (52) formed bearing roller (58) is guided when the strut (40) resiliently in or against the Height direction H is operated. Seating furniture according to at least one of the preceding claims, characterized in that a plurality of bearing rollers (58) are arranged on the bearing bush (47) such that their roller end faces (56) abut against the outer shell (41) of the strut (40) without play and their rotational axis alignment A are each oriented perpendicular to the height direction H, so that the strut (40) in the height direction H along the bearing rollers (58) can be actuated. Seating furniture according to at least one of the preceding claims, characterized in that two bearing bush side anti-rotation means (52,53), each with a on a roller cage (57) rotatably mounted bearing roller (54,55) are formed with opposite roller end surfaces (56) and the anti-rotation means (51) is arranged with lateral guide surfaces (59) between the roller end surfaces (56) of the bearing rollers (54,55). Seating furniture according to at least one of the preceding claims, characterized in that the gas pressure spring (42) is at least partially surrounded by a tubular adapter (60) and connected to this non-positively. Seating furniture according to at least one of the preceding claims, characterized in that the tubular adapter (60) comprises an aluminum tube, on whose inner wall plastically deformable structures are formed, by means of which the tubular adapter (60) on the outer surface of the gas spring (42) non-positively and thus rotatably is fixed. Seating furniture according to at least one of the preceding claims, characterized in that the gas pressure spring (42) has a first section (43) on which the gas pressure spring (42) is surrounded by a tubular adapter (60) and has a second section (43), on which the gas pressure spring (42) with a seat support (6) of the seat (3) is rotatably connected. Seating furniture according to at least one of the preceding claims, characterized in that the gas pressure spring (42) surrounding tubular adapter (60) surrounded by a sliding tube (62) and is rotatably connected thereto and its lower opening with a metal disc as a central shaft (61) and at the central shaft (61) a lower end (42 a) of the gas spring (42) is fixed. Seating furniture according to at least one of the preceding claims, characterized in that the lower spring receptacle (46) via a thread (17b) with a thread (17a) attached to the pillar (14) and in height H is adjustable. Seating furniture (1) according to at least one of the preceding claims, characterized in that the seat (3) has a device (16) for defining the rearward direction R and wherein the pendulum joint (10) is deflected to different degrees relative to the orientation of the device (16) , Furthermore, a safety device is provided, which allows a smaller, limited deflection of the pendulum column in the reverse direction R, as is the case in other directions. Seating furniture (1) according to claim 15, characterized in that the device (16) is a backrest (7).

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