EP2858535B1 - Restoring device for automatically adjusting the restoring force - Google Patents

Description

The invention relates to a return device according to claim 1 and a chair with a return device according to claim 14. The invention relates in particular to a pendulum return device with an elastically deformable joint body for seating with a seat and a column for exerting oscillations of the seat, wherein the spring characteristic and thus automatically adjusts the restoring force of the reset device depending on the body weight of the seat occupant.

Furthermore, the restoring device according to the invention can be used for all areas of application in which the one lateral restoring force should be adjustable in a weight-dependent manner in the case of a lateral deflection. An advantage of a device for automatically adjusting the spring characteristic and the resulting restoring force is the avoidance of too large or too small deflection width of a pendulum seat. By the correct i. Adjusting the pendulum movements to the body weight of the seat occupant can prevent damage to health, such as overstretching of the ligamentous structures of the lumbar spine, which can lead to protrusion of the intervertebral discs in the area S1 / L5 or L5 / L4 or even to a disc prolapse. Therefore, for the best use of an active dynamic seat, the correct adjustment of resistance to lateral (lateral) deflection is of great benefit to the health of the occupant.

From the EP 1 106 111 A1 a generic seating or a pendulum chair is known in which a return device, in particular for a bar stool with a seat part, an intermediate part and a foot part is disclosed in which the intermediate part is resilient and tiltable and resettable mounted on the foot.

From the pamphlets WO 2006/082083 A and WO 93/19650 A1 publications on chairs are already known in which an active dynamic movement while sitting on the chairs is possible.

Furthermore, a movable seating of the aforementioned type with a return device at its foot also from the European patent EP 0 808 116 B1 known. This restoring device is designed so that the restoring force can be set individually by means of an adjustable screw actuated by the seat user.

This makes it possible for the seat occupant depending on his body weight, the pendulum deflections and the restoring force of the pendulum joint by means of Turn and then use the adjusting nut to increase or decrease the restoring force until the correct setting has been found.

Another disadvantage is that the one-time setting of a seat occupant for another seat occupant with different body weight does not fit and this must adjust the setting to his needs.

In addition, the seat users are not easily aware that such an individual attitude with respect to their body weight and the matching restoring force is provided at all.

However, the amount of deflection in pendulum movements is fundamental to the use of a pendulum stool. If the restoring force is set for a person with a specific body weight, then a person of lesser weight can deflect the seat only with difficulty. As a result, the seat does not tip forward as it turns, and the positive effect of tilting the pelvis forward and thus avoiding circling does not occur. On the other hand, if the restoring force is too low and thus set too soft, a person with a higher body weight will perceive the sitting as "unstable" and perform too large oscillations. Consequently, this person is constantly striving to maintain their balance, and thus must stabilize the sitting position of the muscular lumbar spine, to compensate for the tilting of the seat.

In the DE 10 2009 019 880 A1 Therefore, a chair with a seat and a pendulum device for exerting pendulum movements of the seat is disclosed with a device for automatically adjusting the pendulum restoring force depending on the weight of a person using the seat. This chair has a seat, a strut, a foot, and a pendulum device and a device for automatically adjusting the pendulum restoring force.

This seat is designed so that is extended by deeper sinking of the seat supporting shock absorber at a higher body weight of the user, the lever arm in a lower bearing of the center column, whereby the resistance of the lateral deflection increases with increasing body weight of the seat occupant.

Again DE 10 2009 019 880 A1 can also be seen, the device has a complex structure. A bearing housing, a plurality of rubber bearings disposed in the holder, a control movable along the rubber bearing, and an upper radial circumferential rubber seal are used to close the device to the outside. Furthermore, the device has a helical spring on which the control is supported. Depending on the body weight of the seat occupant and the spring constant of the coil spring thus results in the penetration depth of the control element in the bearing housing.

A disadvantage of the return device from the DE 10 2009 019 880 A1 is that it uses a screw (pressure) spring as a means for regulating the penetration depth and this predominantly generates a restoring force in the axial direction. Depending on the depth of penetration, different bending moments result and the axially actuated coil spring is also twisted. Furthermore, the reset device is complex and their properties are determined by the interaction of the various mutually movable components. Due to the relative movement between the control and the rubber bearings, it can also lead to mechanical abrasion.

Based on this device, it is an object of the present invention to provide an alternative return device for automatically adjusting the restoring force, which is less complex and overcomes the aforementioned disadvantages. In particular, it is an object of the present invention to reduce the number of components required and to provide a cost effective solution.

The object is achieved according to the invention and as defined in claim 1 in that a lateral (lateral) restoring force-generating element is formed as an elastically deformable or deformable molded part which has one or more recesses and / or cavities which are shaped in this way in that the pendulum column of the pendulum chair, depending on the body weight of the seat occupant, deforms the shaped part more or less strongly, as a result of which the recesses and / or cavities are reduced in volume and thus the bending stiffness is increased. In other words, the directional spring characteristic of the molded part is changed. In this way, the restoring force automatically sets itself accordingly. Advantageously, the chair leg end cooperating with the molded part, which is received in the molded part and fastened there, is completely surrounded by the molding material. The molding material used is preferably an incompressible to slightly compressible material.

The basic idea of the present invention is thus to provide an elastically deformable molded part made of a molding material (material) whose Poisson's ratio (transverse contraction number) is preferably between 0.44 and 0.5, close to 0.5 or particularly preferably 0.5. This ensures that the elastic deformation substantially due to the recesses, such as. Columns or cavities can be accomplished. A chair leg, which is in a molded part receptacle with a completely filled incompressible molding i. Without cavities or recesses is introduced, could almost not move or laterally deflect.

By means of a molded part with recesses and / or cavities defined movement possibilities are created. Depending on where recesses are present, the molding material can be displaced there and deformed, so that a mobility of the chair leg is made possible in this direction.

It has further been recognized that the elastomers, rubber, rubber, silicones, TPE or NBR are suitable molding materials for forming the molding. Elastomers consist of long-chain macromolecules, which are cross-linked by covalent primary bonds and distributed randomly. On the degree of crosslinking and the degree of polymerization, which is a measure of the length of the macromolecules, the material properties such as strength and the spring characteristic can be adjusted. The distance between the crosslinking points, which is the length of a free chain segment, is 5-20 carbon spacings. Due to the crosslinking, elastomers are not plastically moldable. In the unclaimed state, the macromolecules are strongly entangled due to the rotatability about their axis of attachment between the chain links. Their orientation in space is undirected. This is the state of highest entropy, and thus the most statistically most likely equilibrium state at use temperature, whereby elastomers have an amorphous isotropic structure.

Elastomers are practically incompressible, so their Poisson number is v = 0.5. If e.g. an elastomeric molding material deformed or displaced in the cavities or recesses provided in the molding, so sets a restoring force and the molding material tries to return to its original initial state. The cross-linking sites as well as the chain entanglements between the macromolecules remain. They prevent the material from sliding apart and cause the material to deform almost completely reversibly back into the previous shape. The alignment of the macromolecules through stretching is accompanied by a decrease in entropy. This results in a retroactive force, which leads the macromolecules back into the state of higher entropy, ie the undeformed state.

This effect is used according to the invention that through the training suitable recesses and cavities in the molded part, a desired axial and preferably dependent lateral restoring force can be generated.

1. a) Abhängig von der axialen Deformierbarkeit des Formteils kann so der effektive Hebelarm des Stuhlbeines verkürzt und die laterale Federcharakteristik selbsttätig eingestellt werden;
2. b) ferner wird durch die körpergewichtsabhängige Deformierung des Formstoffes in die Ausnehmungen die Beweglichkeit des Stuhlbeins im Formstoff entsprechend dem Grad der Deformation eingeschränkt.

The following additional effects occur:

1. a) Depending on the axial deformability of the molded part so the effective lever arm of the chair leg can be shortened and the lateral spring characteristic can be set automatically;
2. b) Furthermore, the mobility of the chair leg in the molding material is limited according to the degree of deformation by the body weight-dependent deformation of the molding material in the recesses.

According to the invention, therefore, a return device for a pendulum chair for automatically adjusting the spring characteristic and thus the pendulum restoring force depending on the body weight of a seat occupant is provided, wherein the return device comprises a molded part with a receptacle for the pendulum column, and a molded part receptacle, in which the molded part is received. The molding has one or more recesses and / or cavities, whereby it is elastically deformable, so that the pendulum column fastened in the molding can be moved back and forth. Depending on the body weight of the seat occupant, the molded part is deformed more or less axially. Since the cavities are filled with increasing body weight of the displaced molding material, the mobility of the chair leg is restricted in the molding and the spring characteristic changes automatically, with the result that the deformed molding material is more rigid and increases the restoring force when deflecting.

The elastically deformable molded part is therefore elastically deformable in a direction parallel to the pendulum column (axial), so that the pendulum column can dip into the molded part receptacle in this axial direction. It is further preferred that with increasing immersion depth of the chair leg in the mold receiving part, the molded part generates a higher restoring force in the lateral direction as soon as the chair leg is laterally deflected during a pendulum motion.

It is advantageous if the molded part is elastically movable back and forth in a direction that is lateral to the axial alignment of the pendulum column. It is further preferred if the molded part side wall of the molded part is circumferentially laterally supported against the supporting walls of the molded part receptacle such that the supporting walls form an abutment for the molded part as soon as the pendulum column reciprocates.

In an advantageous embodiment, the molding is positively against his form part side wall against the inside of the support walls, whereby a stable and secure fit between the molding and the molding receiving is achieved.

Preferably, a plurality of column-shaped recesses are formed in the molding and extend to the top of the molding. Alternatively or additionally, a plurality of tubular recesses may be formed in the molded part, which extend to the top thereof. If the recesses or gaps or slits extend as far as the upper side, a venting of the trapped air takes place automatically when the molded part is deformed.

Furthermore, a plurality of columnar or tubular recesses may be formed transversely in the molding and extend to the molding side wall.

In a preferred embodiment, a cavity is formed between the underside of the molded part and the bottom of the molded part receptacle, wherein preferably in the bottom of a vent opening is provided.

In the molded part recording can also be one or more individually adjustable Auslenkungsbegrenzungen be formed in order to adjust the degree of deformation of the molded part and thus the spring characteristic in the corresponding deflection direction individually.

The shaped part receptacle of the restoring device expediently has an adjusting screw in order to be able to adjust the shaped part in its depth in the molded part receptacle and thereby to be able to adjust the lateral restoring force. If the molded part is screwed in deeper, then a region of the molded part is clamped in the molded part receptacle between the side walls, whereby the spring characteristic is changed so that an increased restoring force is generated with otherwise the same pendulum deflection.

It is also advantageous if the molded part receptacle of the restoring device further comprises a spring which can be adjusted by means of a set screw and on which the molded part rests. With the adjusting screw, the spring can be individually biased, so that thereby the position of the molding in the mold receiving part and the desired immersion depth can be adjusted at a certain body weight.

According to the invention, a pendulum chair with a laterally deflectable pendulum column and attached to the pendulum column seat and a foot part is proposed, wherein the foot part of the invention the restoring device is arranged and the pendulum column is connected to the reset device so that the corresponding spring characteristic and restoring force depending on the body weight of the seat occupant automatically stops.

The particular embodiment of the illustrated reset device is not reserved for a particular seating, but it can on any seating such. a chair with gas spring can be used.

Fig. 1

einen Pendelstuhl mit einer Rückstellvorrichtung,

Fig. 2

erste Ausführungsformen einer Rückstellvorrichtung mit Aufsichten auf die Formteile,

Fig. 3

alternative Ausführungsformen einer Rückstellvorrichtung mit Aufsichten auf die Formteile,

Fig. 4

ein weiteres Ausführungsbeispiel einer Rückstellvorrichtung,

Fig. 5

eine schematische Darstellung der Funktionsweise eines alternativen Ausführungsbeispiels einer Rückstellvorrichtung,

Fig. 6

eine schematische Darstellung der Funktionsweise eines alternativen Ausführungsbeispiels einer Rückstellvorrichtung,

Fig.7

weitere nicht erfindungsgemäße Ausführungsbeispiele von in der Höhe einstellbaren Rückstellvorrichtungen mit einer Stellschraube,

Fig. 8

ein nicht erfindungsgemäßes Ausführungsbeispiel ähnlich der Figur 7 mit einer auf einer Feder gelagerten und in der Höhe einstellbaren Rückstellvorrichtung,

Fig. 9

ein weiteres nicht erfindungsgemäßes Ausführungsbeispiel einer Rückstellvorrichtung mit Auslenkungsbegrenzungen,

Fig. 10

ein alternatives Ausführungsbeispiel einer Rückstellvorrichtung mit einer manuellen Einstellmöglichkeit der Federcharakteristik,

Fig. 11

ein alternatives Ausführungsbeispiel einer Rückstellvorrichtung mit einem Formteil mit einer asymmetrischen Federcharakteristik und

Fig. 12

ein weiteres Ausführungsbeispiel einer Rückstellvorrichtung mit einer exzentrischen Lagerung der Pendelsäule.

Other advantageous developments of the invention are characterized in the respective subclaims or will be described in more detail below together with the description of the preferred embodiment of the invention with reference to FIGS shown. Show it:

Fig. 1

a pendulum chair with a reset device,

Fig. 2

first embodiments of a return device with views of the moldings,

Fig. 3

alternative embodiments of a return device with views of the moldings,

Fig. 4

Another embodiment of a reset device,

Fig. 5

a schematic representation of the operation of an alternative embodiment of a reset device,

Fig. 6

a schematic representation of the operation of an alternative embodiment of a reset device,

Figure 7

other not inventive embodiments of adjustable height restoring devices with a set screw,

Fig. 8

a non-inventive embodiment similar to the FIG. 7 with a return device mounted on a spring and adjustable in height,

Fig. 9

a further non-inventive embodiment of a restoring device with Auslenkungsbegrenzungen,

Fig. 10

an alternative embodiment of a reset device with a manual adjustment of the spring characteristic,

Fig. 11

an alternative embodiment of a reset device with a molded part with an asymmetric spring characteristic and

Fig. 12

a further embodiment of a return device with an eccentric bearing of the pendulum column.

Detailed description of embodiments illustrated in the figures

Like reference numerals in different figures indicate like components, components or features. Fig.1 shows a pendulum chair 2 with a seat 4 which is fixed to the upper end of a pendulum column 3. The pendulum column 3, which is also referred to below as a chair leg 3, is mounted in a lateral direction L ', L "movable back and forth on the foot part 5 by means of a return device 1. The arrows L', L" indicate the curved movement in FIG Lateral direction L on, which performs the seat 4 during oscillations of the pendulum column 3. The directional arrow H indicates the height direction, which corresponds to the axial orientation A of the pendulum column in the idle state. The directional arrow L is orthogonal to the height direction H and indicates the horizontal component of the lateral movement. The seat 4 is with the pendulum column 3 in Fig. 1 once in the rest position and once in a deflected by the deflection ΔL position shown. In this position, a lateral restoring force arises in the restoring device 1, which depends on the direction-dependent spring characteristic (elastic modulus) of the restoring device 1.

In Fig. 2 First embodiments of the return device 1 are shown. The return device 1 has a molded part 10, which is formed in the present example of an incompressible elastomer. The molded part 10 is formed in a funnel-shaped molded part receptacle 20 and is supported by its molding side wall 11 against the side wall of the molding receiving 20 from which is hereinafter referred to as a support wall 21. The funnel-shaped receptacle forms a solid support in the height direction H for the molded part 20. In the molded part 20, the end of the pendulum column 3 is fixed in the recess 12 and completely enveloped by the molding material. Between the bottom 14 of the molding 10 and the bottom 22 of the molding receiving 20 is a cavity 15 '. Further, a radially around the chair leg end circumferential V-shaped recess 15 in the molding 10 is present. As a result, the pendulum column 3 can be moved back and forth about the lower pendulum pivot 8. The lower pendulum pivot 8 is located in the left view of Fig. 1 at a height H1. This view shows the return device 1 in its unloaded position. Will, as in the right view of Fig. 2 shown, introduced a weight F of a seat occupant on the chair leg 3 in the molding 10, so the pendulum fulcrum 8 immersed in the height direction H by the amount .DELTA.H in the molded part receptacle 20 a. This amount ΔH is called the penetration depth E. Next is in the right view of the Fig. 2 recognizable that the molding material of the molding 1 has been deformed or displaced in the cavity 1 and in the V-shaped gap 15. In this way, the pendulum fulcrum 8 moves in height direction down. There is then only a reduced mobility of the pendulum column (3) in the lateral direction L. If the pendulum column 3 in the left and the right representation by the deflection width .DELTA.L, as in Fig. 1 shown deflected laterally, so sets a correspondingly higher restoring force in the loaded case in comparison to the left-hand unloaded position.

Depending on the body weight F of a seat occupant thereby automatically changes the spring characteristic of the molding 10 and the associated restoring force.

At the bottom 22 of the molded part receptacle 20 there is a vent opening 23, so that the air in the cavity 15 'can escape during deformation of the molded part 10. In the lower right view of the Fig. 2 is an alternative embodiment of the recesses 15 in the form of tubular recesses shown. Due to the special choice of the shape of the recesses 15 and the cavity 15 ', the bending stiffness and spring characteristic of the molded part 10 can be adjusted specifically. The spring characteristic is thus determined by both the shape and number of recesses and cavities and the appropriate choice of material of the molding material.

In Fig. 3 further alternative embodiments for the formation of the molding 10 are shown. In the lower left view of the Fig. 2 a molding 10 is shown with 6 slot-shaped recesses 15. These extend from the chair leg end radially outward to the molding side wall 11. In the lower right view, instead of the continuous radial gaps 15 each 4 tubular recesses 15 are formed in the mold part 10.

In the Fig. 4 a further embodiment of a return device with transverse recesses 15 is shown. In the present example, these are arranged circumferentially in two spaced-apart planes, resulting in a good tiltability of the pendulum column.

In the Fig. 5 and 6 further embodiment of a return device 1 are shown, in which the molded part 10 has an hourglass-like shape and is constricted in the middle, resulting in a particularly good fit of the molded part 10 in the molded part receiving 20 results. Furthermore, a schematic representation of the operation of these embodiments is explained. It is evident that in the loaded condition, each in the right views of the Fig. 5 and 6 is shown, the movement space is limited for pendulum movements as soon as the pendulum fulcrum 8 was immersed by the penetration depth E in the molding receiving 20. Also, the distance remaining to the support wall 21 has decreased from the value X1 to the value X2. As a result, a higher flexural rigidity will automatically set when loaded by the seat occupant.

In Fig. 7 Further embodiments of a height-adjustable return device 1 with a screw 24 are shown. In this case lets Set the recesses having molding 10 by means of a screw 24 in the height in the molding receiving 20. In this way, the desired bending stiffness of the molding 10 can be adjusted to the desired level. For example, if the molded part is completely screwed into the molded part receptacle, the effective spring arm length of the pendulum column 3 is shortened and the molded part 20 can not be so severely deformed either. In the right example in Fig. 7 For example, the shaped part 10 can be tensioned against the funnel-shaped support wall 21 under appropriate tension, which increases the basic setting of the bending stiffness of the molded part 10. The operation of the molding 10 under the weight of a body weight follows the principles described above.

Fig. 8 is a continuing education Fig. 7 in which the positional position is also variable by means of a set screw 24, wherein the molded part 10 here auflagert on a spring 25 and depending on the body weight of the seat occupant and the bias of the spring 25 can dive to a desired level in the molded part receptacle 20. In this way, the effect associated with the invention can be optimized since, by combining the molding 10 provided with the previously described recesses with the spring 25, the overall spring characteristic of the restoring device 1 can be adjusted particularly well both in the axial and in the lateral direction.

The Fig. 9 shows an embodiment of a reset device 1 with Auslenkungsbegrenzungen to adjust the spring characteristic of the return device 1 in different pendulum directions different. It is desirable in some applications to achieve different strong restoring forces depending on the direction of oscillation. So it is advantageous if pendulum movements generate a higher restoring force to the rear and thus a higher security for the seat user is guaranteed.

This can be generated on the one hand by an anisotropic design of the molded part, for example of materials with different Poisson's number may be composed or by directional attachment of recesses. Alternatively or additionally, deflection limits 30 can be provided. In the Fig. 9 For example, 5 segments are circumferentially formed on the molded part receiving 20, which can be braced differently strong against the foot part 5. For this purpose, clamping screws 26 can be used, which are mounted in corresponding recesses on the foot part 5 and can be rotated by means of a suitable rotary tool in the desired position. Thus, the desired spring characteristic of the reset device 1 can be set in segments (depending on the set voltage).

In the Fig. 10 Another possibility discloses the basic setting of the spring characteristic regardless of the automatic setting (by the molding 10) of the reset device 1 to adjust. The molded part 10 shown here is introduced into a molded part receptacle 20, which has circumferentially a plurality of spring tongues 27. The spring tongues are clamped by a hose clamp 28 attached to the outer circumference. The hose clamp can be constricted by means of an eccentric screw 29 in diameter, whereby the molding material is deformed into the recesses 15 and the flexural rigidity is increased. As a result, the spring characteristic of the return device is adjustable.

In Fig. 11 an alternative embodiment of a return device 1 with a molded part 10 is shown in which a molded part 10 'is introduced with a higher hardness than the molded part 10. The molded part 10 'used here is arranged as a crescent-shaped part in the region of the molded part 10, in which the deflection is to be more restricted (eg in the direction of a backrest). The molding 10 'may be received in the molding 10 by overmolding or mechanical insertion. In this way one obtains an asymmetric spring characteristic.

Another embodiment of a return device 1 is shown in FIG Fig. 12 shown, in which an eccentric bearing of the pendulum column is provided. This design of the molded part 10, in which the recess 12 for receiving the pendulum column 3 is arranged eccentrically or at least outside a symmetry center of the molded part 10, also has the effect that the molded part 10 thus formed has an asymmetric spring characteristic. Instead of molded parts 10, 10 'with a round, oval and / or crescent-shaped cross section, alternative shapes may also be used, provided that they are designed so that the effect described above is achieved.

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. Thus, it is within the scope of the described invention to replace the rubber elements with other suitable materials. Furthermore, instead of a chair leg, several (movable) chair legs can be connected to the return device.

Further, the reset device according to at least one or more of the features described above may be formed so that the molding can be adjusted in height by means of a set screw in the mold receiving part and / or that the molded part is mounted on a spring in the molded part receiving in height movable , It is also conceivable that one or more individually adjustable Auslenkungsbegrenzungen (are formed in order to adjust the degree of deformation of the molded part and thus the restoring force in the corresponding deflection direction in the molded part.

LIST OF REFERENCE NUMBERS

1

Reset device

2

swing chair

3

pendulum column

4

Seat

5

footboard

6

feather

7

Seat center

8th

Pendulum fulcrum

10

molding

10 '

molding

11

Molding sidewall

12

recess

13

top

14

bottom

15

recesses

15 '

cavities

20

Shaped product receiver

21

retaining wall

22

ground

23

vent

24

screw

25

feather

26

clamping screw

27

spring tongue

28

hose clamp

29

eccentric

30

Auslenkungsbegrenzungen

A

axially

L

Lateral direction.

L ', L "

Lateral directions of the pendulum direction

.DELTA.L

Auslenkungsweite

H

height direction

e

Immersion depth

Claims (13)

1. Restoring device (1) for a pendulum chair (2) for automatically adjusting the pendulum restoring force of the pendulum column (3) of the pendulum chair (2) in dependence of the body weight of a chair user, wherein the restoring device (1) is comprising:

   a) a pendulum column and
   a elastically deformable molded part (10) with a recess (12) for receiving the pendulum column (3),

   b) a molded part receptacle (20) in which the molded part (10) is received; wherein

   c) in the molded part (10) for the deformability a cavity (15') is formed, so that the pendulum column (3) defending of the body weight of the chair user dips more or less into the molded part (10) and at the same time deforms the cavity (15'), whereby the spring characteristic of the restoring device (1) is automatically adjusted.
2. Restoring device (1) according to claim 1, characterized in that, the molded part (10) is formed from a preferably incompressible material with a Poisson's number between ν = 0.44 and ν = 0.5, preferably with a Poisson's number of ν = 0.5.
3. Restoring device (1) according to claim 1 or 2, wherein the molded part (10) is formed from a molding material of elastomer, rubber, caoutchouc, silicon, TPE or NBR.
4. Restoring device (1) according to at least one of claims 1 to 3, characterized in that, the molded part (10) is elastically deformable in a height direction (H), so that the pendulum column (3) can dip with a dipping depth (E) into the molded part receptacle (20).
5. Restoring device (1) according to at least one of claims 1 to 4, characterized in that, a higher restoring force in lateral direction at a lateral pendulum deflection ΔL of the pendulum column (3) increases with increasing dipping depth (E) of the molded part (10) in the molded part receptacle (20).
6. Restoring device (1) according to at least one of claims 1 to 5, characterized in that, the elastically deformable molded part (10) is elastically deformable in a lateral direction to the pendulum column (3).
7. Restoring device (1) according to at least one of claims 1 to 6, characterized in that, the molded part side wall (11) of the molded part (10) is laterally supported against the support walls (21) of the molding part receptacle (20), such that the support walls (21) form a counter bearing for the molded part (10) at pendulum movements of the pendulum column (3).
8. Restoring device (1) according to at least one of claims 1 to 7, characterized in that, the molded part (10) bears against the inside of the supporting walls (21) in a form-fitting manner with its molded part side wall (11).
9. Restoring device (1) according to at least one of claims 1 to 8, characterized in that, multiple column-shaped and/or tube-shaped recesses (15) are formed in the molded part (10) and extend up to its upper side (13).
10. Restoring device (1) according to at least one of claims 1 to 9, characterized in that, multiple column- and/or tube-shaped recesses (15) are formed in the molded part (10) and extend up to its molded part side wall (11).
11. Restoring device (1) according to at least one of claims 1 to 10, characterized in that, the molded part (10) has an asymmetrical spring characteristic in a lateral direction L, in that the recess (12) for the pendulum column (3) is arranged eccentrically or out of the middle in the molded part (10).
12. Restoring device (1) according to at least one of claims 1 to 11, characterized in that, the molded part (10) has an asymmetrical spring characteristic in a lateral direction L, achieved in that a compared with the molded part (10) harder molded part (10') is partially inserted into the molded part (10).
13. Pendulum chair (2) with a lateral deflectable pendulum column (3) and a seat (4) fixed to the pendulum column (3) as well as a base part (5), wherein a restoring device (1) according to at least one of the claims 1 to 12 is arranged at the base part (5) and the pendulum column (3) is connected to the restoring device (1).

Images