DE102017201360A1 - FEATHER MODULE, ESPECIALLY FOR A CHAIR OR STOOL, AND SEATING DEVICE, IN PARTICULAR CHAIR OR STOOL - Google Patents

Abstract

The present invention relates to a spring-joint module, in particular for a chair or stool, having a seat coupling portion and a foot coupling portion which are arranged along a main axis and are spring-tilted together via a spring joint, wherein the spring joint has an elastic element and a co-operating control part, wherein the elastic member is arranged stationary and the adjusting member is provided for adjusting a spring force of the spring joint continuously rotatable relative to the elastic member, wherein the spring joint has a locking means for locking the adjusting member relative to the stationary arranged elastic member in a desired position. The present invention further relates to a seat device with such a spring joint module.

Description

FIELD OF THE INVENTION

The present invention relates to a spring joint module, in particular for a chair or stool, and a seat device, in particular chair or stool.

TECHNICAL BACKGROUND

When permanently sitting it is advantageous from an ergonomic point of view to provide a seat of a seat device movable. One way to make a seat movable is to provide a spring hinge.

This was already in the German patent application DE 35 13 985 A1 tried to solve. There it is proposed to provide for a stool, the storage of a seat tilted about a middle seating area by means of a tennis ball. Centering springs are provided at the edges of the seat. As a result, the upper body of the user should always be in a mobile, unstable state, so that the back muscles are constantly operated with the balancing. The disadvantage here is that this storage of the seat is not customizable without much effort.

An adjustable spring joint was made in the DE 20 2012 010 417 U1 described. This has an annular spring mounted on a plurality of bearing points and an adjusting ring which is adjustable and provided with extensions. If the forestry sets are aligned with the bearing points of the ring spring, the spring joint is blocked. If the extensions are adjusted between the bearing points, the annular spring can give way and thus provide mobility of the spring joint. However, in particular in intermediate positions and / or with strong deflection, an adjustment can also take place in an undesired manner.

The WO 2012 068 688 A1 describes a spring joint with ball head bearing whose spring force is adjustable by a guided in a gate lever in stages. This has the advantage that the backdrop protects against unwanted or accidental adjustment. The disadvantage is a user here but not free in his choice of spring force, but tied to the predetermined levels.

SUMMARY OF THE INVENTION

Against this background, the present invention has the object to provide an improved spring joint module and an improved seat device.

According to the invention, this object is achieved by a spring-joint module having the features of patent claim 1 and / or by a seat device having the features of patent claim 15.

• - Ein Federgelenkmodul, insbesondere für einen Stuhl oder Hocker, mit einem Sitzkoppelabschnitt und einem Fußkoppelabschnitt, die entlang einer Hauptachse angeordnet sind und miteinander über ein Federgelenk federelastisch verkippbar verbunden sind, wobei das Federgelenk ein elastisches Element und ein damit zusammenwirkendes Stellteil aufweist, wobei das elastische Element stationär angeordnet ist und das Stellteil zum Einstellen einer Federkraft des Federgelenks relativ zum elastischen Element stufenlos verdrehbar vorgesehen ist, wobei das Federgelenk eine Arretiereinrichtung zum Arretieren des Stellteils gegenüber dem stationär angeordneten elastischen Element in einer gewünschten Stellung aufweist.
• - Eine Sitzvorrichtung, insbesondere Stuhl oder Hocker, mit einem Sitz, einem Fuß und einem erfindungsgemäßen Federgelenkmodul, wobei der Sitzkoppelabschnitt mit dem Sitz und der Fußkoppelabschnitt mit dem Fuß koppelbar oder gekoppelt vorgesehen ist.

Accordingly, it is provided:

• - A spring joint module, in particular for a chair or stool, with a seat coupling portion and a Fußkoppelabschnitt, which are arranged along a main axis and connected resiliently tiltable with each other via a spring joint, wherein the spring joint has an elastic member and a co-operating control part, wherein the elastic Element is arranged stationary and the adjusting member for adjusting a spring force of the spring joint is provided relative to the elastic element continuously rotatable, wherein the spring joint has a locking device for locking the adjusting member relative to the stationary arranged elastic member in a desired position.
• - A seat device, in particular chair or stool, with a seat, a foot and a spring joint module according to the invention, wherein the seat coupling portion with the seat and the foot coupling portion is provided with the foot coupled or coupled.

The idea underlying the present invention is to provide a lockable for an adjustable adjustment of a spring force control part of an adjustable spring joint with a stationary elastic element of the spring joint lockable.

In this way, the adjustment of the spring force comes without steps. Nevertheless, the actuator remains reliable, regardless of the type of position and the amount of stress on the elastic element, in particular in any intermediate positions of the actuator and under high load of the elastic element, in its adjusted desired position.

Overall, the ease of use is thus increased because there is no binding to predetermined levels and yet an undesirable or adjustment adjustment is excluded.

The stationarily arranged elastic element is in particular arranged immovably relative to the Fußkoppelabschnitt.

Advantageous embodiments and further developments will become apparent from the other dependent claims and from the description with reference to the figures of the drawing.

According to one embodiment, the elastic element is rotationally symmetrical. In particular, it is provided rotationally symmetrical to the main axis. Alternatively or additionally, it may be a spring ring. For example, it may be a multi-layer spring ring, in particular three-layered with a core and two outer layers act. Advantageously, thus, the adjusting member can be rotated continuously and always be in contact with the elastic element. Furthermore, so can attack in any position of the adjusting infinitely in the same way to the elastic element.

According to a preferred embodiment, the locking device is designed to engage a peripheral surface of the elastic element for locking. In particular, it is a peripheral surface running parallel to the main axis. Accordingly, the elastic element has a thickness sufficient to attack the locking device. Preferably, the elastic element is designed comparatively stiff to attack the locking device in the radial direction.

In the axial direction, the elastic element is preferably formed elastically bendable

According to one embodiment, the control part is provided with extensions. In particular, it is a collar provided with extensions, which is rotatable about the main axis. An extension is understood to mean any protruding from the collar training. It can also be in particular attachments, such as bearings or the like.

Of course, but also integral training of the extensions with the collar possible. Further, a plurality of bearing points for the elastic member having bearing base is provided, which is arranged on a side facing away from the actuating part of the elastic member. The bearing points and the extensions are mutually displaceable by turning the actuator. In this way, the spring force of the spring joint is adjusted.

According to a preferred embodiment, the elastic element is in contact with the bearing base on at least three bearing points on one side. On the other side, the elastic element is in contact with the setting part at at least three contact points defined by the extensions. Preferably, the three bearing points are arranged distributed uniformly over the circumference of the bearing base or of the elastic element. Further, preferably, the extensions are arranged distributed uniformly over the circumference of the actuating part. Advantageously, on the one hand, a statically determined support of seat forces is provided. On the other hand, an adjustment of the relation of the extensions to the bearing points and thus an adjustment of the spring force of the spring joint or an adaptation of the spring characteristic of the spring joint is made possible.

According to a preferred embodiment, the actuating part has a first position relative to the elastic element, in which the spring joint is blocked. Furthermore, the actuating part has a second position relative to the elastic element, in which the spring joint can be tilted flexibly. In the first position, the bearing points are aligned with the contact points and in the second position, the contact points are arranged in a region between the bearing points. In particular, the contact points for setting a maximum mobility or a minimum spring force of the spring joint can be arranged centrally between the bearing points by corresponding rotation of the setting part.

According to an advantageous embodiment, the locking device is designed for producing a frictional connection between the actuating part and the elastic element. In particular, the locking device can be locked in any in the mounted state ingestible position of the actuating part by producing a frictional connection. The frictional connection may in particular be a frictional connection. Alternatively or in addition to a traction, a positive connection can also be made. This is preferably in the range between including the first position and the second position, in which the control part is infinitely adjustable, allows. The locking device is thus preferably locked in any position of the actuator. Thus, any spring force can be adjusted continuously, which is also ensured by stepless lockability that the adjustment is maintained without undesirable adjustment.

According to one embodiment, the locking device on a stamp which is pressed in the locked state against the elastic member and in the dissolved state of the elastic member is at least slightly spaced. According to a development, the punch has a frictional contact portion, which is formed corresponding to a surface provided for frictional engagement, in particular the peripheral surface, of the elastic element. The punch is preferably designed to form a friction pair with a high coefficient of friction or with a high coefficient of friction with the elastic element, in particular with its peripheral surface. For example, in the case of an annular elastic member or a spring ring, the frictional contact portion may be a concave annular portion shape. In this way, the locking force, in particular a normal force of the Friction pairing, effectively transferred and used for a secure adhesion with the elastic element.

According to an advantageous embodiment, the locking device is fixedly coupled to the control part. It is thus provided in the locked state, a firm connection between the elastic element and the adjusting part. Furthermore, it is ensured that the locking device is always arranged in a desired position relative to the control part.

According to one embodiment, the locking device is designed to always attack in the region of an extension of the actuating part in contact with the elastic element on the peripheral surface of the elastic element. In particular, the locking device may be secured in a corresponding position on the control part. For example, a stamp of the locking device can be arranged directly above an extension. Advantageously, the contact between the punch and the elastic element is thus exposed to only no or only a minimum relative movement, in particular independently of a distance to the nearest bearing point.

According to one embodiment, the locking device on an actuating lever for locking, with which also the adjusting member is rotatable. In particular, it is an eccentric lever. This has an open state in which the lever is pivotable and a closed state in which the lever is locked. For example, a snap mechanism with eccentric can be provided for this purpose, which is pivotable in the locked state over a dead center, so that the lever snaps into the locked position and remains there. To release the lever this is pivoted from the locked position, for example, back over the dead center, so that it snaps into an open position.

According to one embodiment, the actuating lever is adjustable substantially vertically to the locking of the locking device and substantially horizontally for rotating the adjusting part. For example, a substantially vertical adjustability may include pivoting about a pivot in the vertical direction. For example, pivoting in the horizontal direction may include twisting about a vertical major axis.

According to one embodiment, the seat coupling portion is resiliently tiltable relative to the Fußkoppelabschnitt to all lying perpendicular to the main axis pivot axes. A prerequisite for this, of course, is a corresponding position of the setting part, which allows tilting. It is therefore a so-called 360 ° spring joint.

The above embodiments and developments can, if appropriate, combine with each other as desired. In particular, all features of a spring joint module can be transferred to a seat device. Further possible refinements, developments and implementations of the invention also include combinations, not explicitly mentioned, of features of the invention described above or below with regard to the exemplary embodiments. In particular, the person skilled in the art will also add individual aspects as improvements or additions to the respective basic form of the present invention.

list of figures

• 1 eine Querschnittdarstellung eines Federgelenkmoduls;
• 2 eine Querschnittdarstellung eines Federgelenkmoduls gemäß einer weiteren Ausführungsform;
• 3 eine perspektivische Darstellung eines Federgelenkmoduls;
• 4 eine Draufsicht auf ein Federgelenkmodul gemäß 3 in einer blockierten ersten Stellung;
• 5 das Federgelenkmodul gemäß 4 in einer flexibel verkippbaren zweiten Stellung;
• 6 das Federgelenkmodul gemäß 4 und 5 in einer Zwischenstellung; und
• 7 eine Sitzvorrichtung mit Federgelenkmodul.

The present invention will be explained in more detail with reference to the exemplary embodiments indicated in the schematic figures of the drawing. It shows:

• 1 a cross-sectional view of a spring joint module;
• 2 a cross-sectional view of a spring joint module according to another embodiment;
• 3 a perspective view of a spring joint module;
• 4 a plan view of a spring joint module according to 3 in a blocked first position;
• 5 the spring joint module according to 4 in a flexibly tiltable second position;
• 6 the spring joint module according to 4 and 5 in an intermediate position; and
• 7 a seat device with spring joint module.

The accompanying figures of the drawing are intended to convey a further understanding of the embodiments of the invention. They illustrate embodiments and, together with the description, serve to explain principles and concepts of the invention. Other embodiments and many of the stated advantages will become apparent with reference to the drawings. The elements of the drawings are not necessarily shown to scale to each other.

In the figures of the drawing are the same, functionally identical and same-acting elements, features and components - unless otherwise stated - each provided with the same reference numerals.

DESCRIPTION OF EMBODIMENTS

1 shows a cross-sectional view of a spring joint module 1 ,

It is a spring joint module 1 for a wide variety of seating devices. For example, it may be provided for a chair such as an industrial chair, office chair, work chair or the like, or for a stool, that is, a chair without a back. For example, it may be a swivel stool (see 7 ), Work stools, orthopedic stools, desk stools, saddle stools, or the like.

The spring joint module has a seat coupling portion 2 and a foot coupling section 3 on. These are along a major axis 4 arranged and connected to each other via a spring joint 5 resiliently tiltable.

The seat coupling section 2 In addition, in the illustrated embodiment, it is opposite the foot coupling section 3 rotatable.

To provide the spring elasticity, the spring joint 5 an elastic element 6 and a cooperating actuator 7 on. To adjust a spring force of the spring joint is the elastic element 6 stationary, ie relative to the foot coupling section 3 fixed, arranged. The control part 7 is relative to the elastic element 6 as well as to the foot coupling section 3 provided steplessly rotatable. Furthermore, the control part 7 locked relative to the elastic element in a desired position. For this purpose, the spring joint 5 has a locking device 26 whose functionality will be explained in more detail below.

The elastic element 6 is formed here to the main axis rotationally symmetrical as a spring ring. For example, this is a three-layer spring ring. In particular, it may have upper and lower resistive outer layers and a flexible core.

The elastic element 6 may contain one or more materials, in particular metals, for example spring steel, and / or polymers, in particular elastomers. In the case of multiple layers of the elastic element, these may comprise different materials. It can thus be a composite component.

The control part 7 is as with three extensions 9 provided collar 7 formed, which around the main axis 4 is rotatable. At the control part 7 opposite side of the elastic element 6 is a storage base 18 provided, which three Auflagerstellen 17 for the elastic element 6 having. The elastic element 6 thus stands on one side, here exemplified by the seat coupling section 2 facing side, over the bearing points 17 with the storage base 18 in contact. On the other side, here for example the foot coupling section 3 facing side, stands the elastic element 6 over extensions 9 , Which contact points 16 between the control part 7 and the elastic element 6 define with the actuator 7 in contact.

The control part 7 here is on average in a first position A (see 4 ), in which the spring joint 5 is blocked. For this the bearing points are aligned 17 with the contact points 16 like here in the cutting plane on the right side of the 1 shown. Thus, the elastisehe element 6 between the bearing points 17 and the contact points 16 only on pressure but not on bending be charged, so that the spring joint 5 not or hardly gives way under load.

The locking device 26 has a stamp 27 on, which in the locked state shown here on a peripheral surface 19 of the elastic element 6 for producing a frictional connection against the elastic element 6 is pressed. The control part 7 is here thus locked in the first position A.

In a second position B in which the spring joint 5 is flexibly tiltable, the elastic element 6 loaded on bending and thus can yield under load, what in terms of 5 will be discussed in more detail. In the second position B as well as in any intermediate position locking is also possible.

Alternatively or in addition to a frictional connection can in other embodiments by means of the locking device 26 and their stamp 27 a positive connection, for example by means of a corresponding toothing on the peripheral surface 19 the elastic element and / or the stamp 27 , be manufacturable.

The locking device 26 is with the control part 7 firmly coupled and has a trained as an eccentric lever operating lever 15 on. This is both for locking the actuator with the elastic and for rotating the actuator 7 educated.

The eccentric lever has a pivot point 29 and an eccentric 30 on. In the illustrated locked state is the eccentric 30 moved over a dead center and thus snapped in the locked position. Will the eccentric 30 by actuating the operating lever 15 pivoted back over the dead center, here by way of example according to the drawn rotation arrow counterclockwise around the fulcrum 29 turned, he snaps through a stamp 27 provided preload together with the operating lever 15 in an open position.

In an open position of the eccentric 30 is the stamp 27 then from the elastic element 6 at least slightly spaced, so that the actuating part relative to the elastic element 6 is rotatable. Due to the rotationally symmetrical shape of the elastic element 6 is a restoration of a frictional connection between the actuator 7 and the elastic element 6 over the locking device 26 in each engageable relative to the elastic element position of the actuating part 7 possible in terms of what 6 will be discussed in more detail.

To provide the frictional contact, the punch 27 a frictional contact portion 28 on, which exemplifies here as on the stamp 27 attached friction shoe is formed. The frictional contact portion 28 is at its friction surface, here the radial to the main axis 4 aligned inner surface corresponding to the frictional engagement peripheral surface 19 of the elastic element 6 educated. In the illustrated embodiment, it is a concave circular section shape.

The peripheral surface 19 of the elastic element 6 runs parallel to the main axis 4 , The elastic element and the friction surface are thus concentric about the major axis 4 arranged, which despite a fixed connection of the locking device 26 with the control part 7 a stepless rotation and needs-based lockability of the control 7 possible in every position. Thus, a stepless adjustability of the spring joint 5 realized.

The locking device 26 is at the control part 7 arranged such that the stamp 27 always in the range of the illustrated here with the elastic element 6 in contact continuation 9 of the control part 7 can attack on the elastic element 6. When locking the locking device engages the stamp 27 thus always directly above the contact point 16 on the peripheral surface 19 of the elastic element 6 at. Because the contact point 16 even with tilting of the spring joint 5 ie, despite deformation of the elastic member 6 , relative to the locking device 26 holds its position, here is a friction in any position possible. A relative movement is at this point even with a tilting of the spring joint 5 and a corresponding deformation of the elastic element 6 minimal. Thus, with this arrangement, the locking device 26 advantageous regardless of the position of the control part 7 and regardless of the set degree of flexibility of the spring joint 5 or the set compliance of the elastic element 6 ensures a stable frictional engagement.

In the illustrated embodiment, the extensions are 9 by way of example with three evenly over the circumference of the adjusting ring 7 formed distributed radial roller bearings. The roller bearings are thus at contact points 16 with the elastic element in line contact. In other embodiments, however, are also different types of extensions, for example, integral or integral with the control part 7 formed extensions, conceivable.

Furthermore, the bearing base 18 as bearing points 17 also three evenly distributed around the circumference arranged roller bearings 8th on. Here, too, there is a line contact with the elastic element 6 , In other embodiments, however, other types of bearing points, for example integrally or integrally formed with the bearing base bearing points, conceivable.

The roller bearings are each with retaining rings 31 at the storage base 18 or on the control part 7 secured.

Furthermore, a locking plate 32 for radially securing the spring element designed as a resilient element 6 provided to allow the elastic element 6 not deformed or twisted from the bearing points 17 or the contact points 16 can solve.

The bearing points 17 space the elastic element 6 from the storage base 18 and the extensions 9 ensure a sufficient distance of the elastic element 6 to the control part 7 , Thus, the spring ring 6 in both directions, ie between the bearing points 17 to the storage base 18 back and between the extensions 9 to the control part 7 towards, flexibly deformable, in particular by bending. In this way, the seat coupling portion with respect to the Fußkoppelabschnitt is resilient around all perpendicular to the main axis pivot axes 21 . 22 (please refer 3 ) tiltable.

The seat coupling section 2 is with an outer cone 34 and the foot coupling section 3 with an inner cone 35 educated. The seat coupling portion is in the illustrated embodiment with the bearing base 18 connected.

The foot coupling section has an axial securing section 37. The axial securing section 37 and the bearing base 18 are through the central openings of the resilient member formed as a spring ring 6 and the control part 7 through each other movably connected. The axial securing portion 37 passes through a play-bearing opening of the bearing base 18 into one with one collar sleeve 39 formed hollow chamber 38 one. Inside the hollow chamber 38 is the axial securing section 37 with an external thread and a locking nut stopped on it 33 Mistake.

The hollow chamber 38 has an undercut, which with one with the bearing base 18 connected ring plate 40 is formed. To an external thread of the pipe extension 37 is a lock nut 33 screwed, which engages in the undercut and thus the axial securing the Fußkoppelabschnitts 3 to the seat coupling section 2 forms.

Through the axial securing section 37 and the seat coupling portion 2 are pressure pens 36 guided, which are provided for triggering a gas spring for height adjustment. The seat coupling section 2 is as a cone 34 and the axial securing portion 37 designed as a tube extension. One each of the pressure pins 36 passes through a hole in the center of the cone 34 and the tube extension. The pressure pens 36 are accordingly guided axially through the bores and designed to ensure pivoting divided.

So that the height adjustment with the gas spring is always operable, has one of the pressure pins 36 , here by way of example the upper in the seat coupling section 2 guided pressure pin 36 , a convex shaped stamp 41 on. This can be in any tilt position on a flat surface 42 of the other push pin 36 Press and thus actuate the gas spring.

For positive connection with one foot 12 has the foot coupling section 3 an inner cone 35 up, with a corresponding cone of a foot 12 is formed coupled. A gas spring, not shown, in the mounted state within a foot 12 be arranged.

In the same way, the cone 34 formed as an outer cone of the seat coupling section 2 with a corresponding inner cone of a seat, not shown here 11 coupled.

2 shows a cross-sectional view of a spring joint module 1 according to a further embodiment.

This differs from the embodiment according to 1 by their flat design, which in particular by an integral design of the inner cone 35 with the axial securing extension 37 is reached. The locknut 33 is thus screwed onto a directly provided on the region of the inner cone external thread. Further, the storage base 18 cup-shaped instead of disc-shaped, with the lock nut 33 is arranged within the top form. In this way, the space in the center of the elastic element formed as a spring ring 6 exploited for receiving the axial fuse.

In addition, now only a pressure pin 36 at the seat coupling section 2 intended. A gas spring, not shown, of a foot 12 In this case, in the mounted state, it can reach directly into the foot coupling section and thus directly via the pressure pin 36 be operated.

3 shows a perspective view of a spring joint module.

The seat coupling section 2 is around all axes transverse to the main axis 4 and thus tiltable in any direction 360 about the major axis. Shown here are two merely exemplary transverse to the main axis 4 and perpendicular to each other tilting axes 21 . 22 around which the seat coupling portion 2 relative to the foot coupling section 3 can be tilted flexibly. This is here with the tilting arrows 24 and 25 indicated schematically.

In addition, the operating lever 15 represented with its horizontal and vertical actuation directions. The actuating lever is for locking the locking device 26 essentially vertically adjustable, as in terms of 1 explained and indicated here by the vertical arrow 25.

To open the lock is the operating lever 15 accordingly pulled up in the illustrated embodiment and pressed down to close the lock. In other embodiments, a reverse operating logic is also possible. For example, to the eccentric 30 be formed vice versa.

Furthermore, the operating lever 15 in the unlocked state for rotating the control 7 horizontally adjustable, as here with the rotary arrow 23 indicated. To set a locked position A of the spring joint (see 4 ), in which the spring joint provides maximum resistance, the actuating lever is rotated counterclockwise in the position shown here of maximum resistance. For setting a flexibly pivotable position B the actuating lever is rotated clockwise, ie in the perspective shown here to the left. With increasing twisting to the left is a steadily decreasing resistance of the spring joint 5 set.

When the desired position has been reached, the locking device is inserted therein 26 by pressing down on the operating lever activated and so the control part 7 secured in the set position.

4 shows a plan view of a spring joint module according to 3 in a blocked first position A ,

The only schematically sketched Auflagerstellen 17 and contact points 16 Aligned here with each other, so that the elastic element 6 between the bearing points 17 and the contact points 16 can only be loaded on pressure but not on bending and thus the spring joint 5 not or hardly gives way under load. By turning the control part 7 over the operating lever 15 in the direction of the second position B can block the spring joint 5 be lifted accordingly.

5 shows the spring joint module 5 according to 4 in a flexibly tiltable second position B ,

In this second position B is the operating lever 15 about 60 ° from the position A manually twisted. Thus, the three are uniformly distributed over the circumference contact points 16 approximately in the middle between the three evenly distributed over the circumference bearing points 17 , When loading the spring joint 5 thus becomes the elastic element 6 strained on bending and can yield accordingly, so that the spring joint 5 can be tilted.

In the position B will give maximum flexibility of the spring joint 5 provided as the distance between bearing points 17 and contact points 16 is greatest here. At the elastic element 6 Thus, a higher bending moment builds up than at a smaller distance. This is a flexible deformation of the spring ring even at low force 6 reached. Furthermore, the deflection is higher with the same force.

In particular, each bearing point can be so under load 17 by deformation of the elastic element 6 in an area between two contact points 16 plunge. If a seat force not exactly centered on the main axis but slightly offset applied to the seat coupling section 2 opposite the foot coupling section 3 thus tilt in the loading direction, for example as in 3 with the tilting arrows 24 and 25 indicated schematically.

The resistance or a spring characteristic of the spring joint 5 is stepless between a blockage in the first position A and a high flexibility in the second position B adjustable. There are therefore any intermediate positions possible.

6 shows the spring joint module according to 4 and 5 in an intermediate position.

In such an intermediate position, a Verkippbarkeit with higher Verkippwiderstand, so with a higher spring stiffness or a steeper course of the spring characteristic of the spring joint 5 be set.

An intermediate position is at every angle between the first position A (0 °) and the second position B (rotated by 60 °) adjustable. In the intermediate position shown here is the angle of rotation of the control 7 by way of example at about 30 °. This is the distance between the contact points 16 and the bearing points 17 less than in the second position B , so that with the same force a lower bending moment on the elastic element 6 gives and the spring joint 5 thus providing greater resistance.

In such an intermediate position acts under load at the contact points 16 due to the unequal spacing to the adjacent bearing points 17 an asymmetric load on the respective extension 9 , Without a locking of the control 7 Thus, at high load, a transverse force component can arise, which can cause an undesired automatic adjustment of the control part. This is done with a locking of the locking device 26 prevented

In this way, the spring joint module 1 adapted to different requirements. Furthermore, a seat device, for example a chair or stool, can be adapted to different body weights of persons, different preferences of persons or different workplace requirements.

7 shows a seat device 10 with spring-joint module 1 ,

The seat device 10 is here exemplified as a swivel stool and has an incomplete illustrated foot 12, a seat 11 and a spring joint module disposed therebetween 1 on.

The foot 12 has at the end, not shown, a standing device, such as a base, on. At the foot 12 is also a foot pillar 13 provided, in which a gas spring, not shown, is received. Further, at the foot column 13 a cone tip 20 provided, which with the Fußkoppelabschnitt 3 of the spring joint module 1 can be coupled

The seat 11 is opposite the foot 12 provided rotatable. At the seat 11 is a substructure 14 provided, which has a cone. The spring joint module 1 is thus on the seat coupling section 2 with the substructure 14 coupled. The twistability of the seat 11 can for example, by a rotatability of the seat coupling portion 2 opposite the foot coupling section 3 be provided.

The individual modules foot 12 , Spring joint module 1 and seat 11 are here separated, but shown according to their assembly arrangement. The seat 11 is characterized in the assembled state relative to the foot 12 around all axes transverse to the main axis 4 can be tilted flexibly, as with the tilting arrows 24 and 25 indicated.

The design as a swivel stool 10 is purely exemplary to understand. In particular, instead of the seat 11 of the swivel stool 10 Also, a seat with a back to form a chair, such as an industrial chair, office chair, work chair, or the like, be provided.

Although the present invention has been fully described above with reference to preferred embodiments, it is not limited thereto but is modifiable in a variety of ways.

LIST OF REFERENCE NUMBERS

1

Spring hinge module

2

Seat coupling section

3

Fußkoppelabschnitt

4

main axis

5

spring joint

6

elastic element

7

adjusting part

8th

roller bearing

9

projections

10

stool

11

Seat

12

foot

13

foot column

14

substructure

15

actuating lever

16

contact point

17

support points

18

bearing base

19

peripheral surface

20

cone tip

21

swivel axis

22

swivel axis

23

rotation arrow

24

Verkipppfeil

25

Verkipppfeil

26

locking

27

stamp

28

friction contact

29

pivot point

30

eccentric

31

circlip

32

Locking plate

33

locknut

34

cone

35

inner cone

36

pushpin

37

safety section

38

hollow

39

collar sleeve

40

ring plate

41

stamp

42

area

A

first position

B

second position

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 3513985 A1 [0003]
• DE 202012010417 U1 [0004]
• WO 2012068688 A1 [0005]

Claims (15)

Spring-joint module (1), in particular for a chair or stool (10), with a seat coupling section (2) and a foot coupling section (3), which are arranged along a main axis (4) and are connected to one another in a spring-elastic tiltable manner via a spring joint (5), wherein the spring joint (5) comprises an elastic element (6) and an adjusting part (7) cooperating therewith, wherein the elastic element (6) is arranged stationary and the adjusting part (7) for adjusting a spring force of the spring joint relative to the elastic element (6 ) is provided continuously rotatable, wherein the spring joint (5) has a locking device (26) for locking the actuating part (7) relative to the stationarily arranged elastic element (6) in a desired position. Spring joint module according to one of the preceding claims, characterized in that the elastic element (6) is rotationally symmetrical, in particular to the main axis, and / or as a spring ring (6) is formed. Spring joint module according to one of the preceding claims, characterized in that the locking device (26) is adapted to engage a peripheral surface (19), in particular a parallel to the main axis (4) extending peripheral surface of the elastic element (6) for locking. Spring joint module according to one of the preceding claims, characterized in that the adjusting part (7) provided with extensions (9), in particular as provided with projections (9) adjusting ring (7) which is rotatable about the main axis (4) is formed, wherein on a side facing away from the adjusting part (7) of the elastic element (6) a bearing points (17) for the elastic element (6) having bearing base (18) is provided. Spring joint module according to Claim 4 , characterized in that the elastic element (6) on one side at at least three bearing points (17) with the bearing base (18) and on the other side on at least three by the extensions (9) defined contact points (16) with the control part ( 7) is in contact. Spring joint module according to Claim 4 or 5 , characterized in that the actuating part (7) relative to the elastic element (6) a first position (A) in which the spring joint (5) is blocked, and a second position (B), in which the spring joint (5) flexible is tiltable, wherein in the first position (A) the bearing points (17) are aligned with the contact points (16) and in the second position, the contact points (16), in particular centrally, in a region between the bearing points (17) are arranged , Spring joint module according to one of the preceding claims, characterized in that the locking device (26) for producing a frictional connection between the actuating part (7) and the elastic element (6), in particular in each einnehmbaren in the assembled state position of the actuating part, preferably in the area between the first position (A) and the second position (B), is formed. Spring joint module according to one of the preceding claims, characterized in that the locking device (26) has a punch (27) which is pressed in the locked state against the elastic element (6) and at least slightly spaced in the released state of the elastic element (6) is. Spring joint module according to Claim 8 , characterized in that the punch (27) has a frictional contact portion (28) which is formed corresponding to a surface provided for frictional engagement, in particular the peripheral surface (19) of the elastic element (6). Spring-joint module according to one of the preceding claims, characterized in that the locking device (26) is fixedly coupled to the actuating part (7). Spring joint module according to Claim 10 , characterized in that the locking device (26) is formed, always in the region of a standing with the elastic element (6) in contact extension (9) of the actuating part (7) on the peripheral surface (19) of the elastic element (6) attack. Spring-joint module according to one of the preceding claims, characterized in that the locking device has an actuating lever (15), in particular an eccentric lever, for locking, with which also the actuating part (7) is rotatable. Spring joint module according to Claim 12 , characterized in that the actuating lever is adjustable substantially vertically to the locking of the locking device and horizontally for rotating the adjusting member. Spring-joint module according to one of the preceding claims, characterized in that the seat coupling portion (2) relative to the Fußkoppelabschnitt (3) resiliently about all perpendicular to the main axis pivot axes (21; 22) is tilted. Seat device (10), in particular chair or stool, with a seat (11), a foot (12) and a spring joint module (1) according to one of the preceding claims, wherein the seat coupling section (2) with the seat (11) and the foot coupling section (FIG. 3) is provided coupled or coupled with the foot (12).

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