DE202012010417U1 - Spring joint module for an industrial chair, industrial chair - Google Patents

Abstract

Spring joint module (1) for an industrial chair (10), in particular for an industrial swivel chair or equivalent (2) and a foot coupling section (3) which are arranged along a main axis (4) and which are resiliently connected to one another via a spring joint (5) perpendicular to the main axis ( 4) are tiltably connected, the spring joint (5) having an elastic element (6) and an actuating part (7) interacting therewith, the elastic element (6) being arranged in a stationary manner and the actuating part (7) being arranged relative to the elastic element (6) ) is provided rotatable and the adjusting part (7) and the elastic element (6) interact with each other in such a way that the adjusting part (7) has a first position (A) relative to the elastic element (6) in which the spring joint (5) is blocked , and a second position (B) in which the spring joint (5) can be flexibly tilted.

Description

FIELD OF THE INVENTION

The present invention relates to a spring joint module for an industrial chair and an industrial chair.

TECHNICAL BACKGROUND

There are work areas, such as production, workshop, trade, laboratory, etc., where normal chairs no longer meet the requirements. Here so-called industrial chairs are used. Such industrial chairs exist in a variety of embodiments. They are characterized by their particularly resistant training to dirt, high or low temperatures, chemicals and mechanical effects and possibly by special electrical properties. Often industrial chairs are designed as a swivel chair or as a swivel stool. These types are usually industrial chairs, on which a fitter, such as an assembly line worker, permanently seated.

When permanently sitting, it is advantageous from an ergonomic point of view to provide a seat movable. 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. However, this is imperative in industrial chairs, where the same chair is often used by different people in different applications.

SUMMARY OF THE INVENTION

Against this background, the present invention seeks to provide an adjustable movable seat of an industrial chair.

According to the invention, this object is achieved by a spring-joint module having the features of claim 1 and / or by an industrial chair having the features of claim 11.

• – Ein Federgelenkmodul für einen Industriestuhl, insbesondere für einen Industriedrehstuhl oder einen Industriedrehhocker, mit einem einen Sitzkoppelabschnitt und einem Fußkoppelabschnitt, die entlang einer Hauptachse angeordnet sind und die miteinander über ein Federgelenk federelastisch senkrecht zur Hauptachse verkippbar verbunden sind, wobei das Federgelenk ein elastisches Element und ein damit zusammenwirkendes Stellteil aufweist, wobei das elastische Element stationär angeordnet ist, das Stellteil relativ zum elastischen Element verdrehbar vorgesehen ist und das Stellteil und das elastische Element derart miteinander zusammenwirken, dass das Stellteil relativ zum elastischen Element eine erste Stellung, in welcher das Federgelenk blockiert ist, und eine zweite Stellung aufweist, in der das Federgelenk flexibel verkippbar ist.
• – Ein Industriestuhl, insbesondere Industriedrehstuhl oder Industriehocker, mit einem Sitz und einem Fuß, wobei der Sitz und der Fuß über ein erfindungsgemäßes Federgelenkmodul miteinander gekoppelt oder koppelbar sind.

Accordingly, it is provided:

• - A spring joint module for an industrial chair, in particular for a industrial swivel chair or an industrial swivel stool, with a seat coupling portion and a Fußkoppelabschnitt, which are arranged along a main axis and which are connected together via a spring joint spring elastic perpendicular to the main axis tiltable, wherein the spring joint is an elastic member and a cooperating actuating part, wherein the elastic element is arranged stationary, the adjusting part is rotatably provided relative to the elastic member and the adjusting member and the elastic member cooperate with each other such that the actuating member relative to the elastic member a first position in which blocks the spring joint is, and has a second position in which the spring joint is tilted flexible.
• - An industrial chair, in particular industrial swivel chair or industrial stool, with a seat and a foot, wherein the seat and the foot are coupled or coupled together via a spring joint module according to the invention.

The idea on which the present invention is based is to provide a spring joint in such a way that it can be easily blocked and flexibility is provided when a control element is rotated. When rotating the spring characteristic of the spring joint is changed by moving provided on the control part contact points relative to stationary power support points for the elastic element. In the first position, there is little or no flexibility realized by compression deformation of the elastic element. When twisting the flexibility increases, because the elastic element can then flex flexibly. The spring joint may include an axial securing and optionally or additionally a pivot bearing, which is pivotable in particular about all axes transverse to the main axis.

Thus, the spring joint can be advantageously blocked and provide flexibility in releasing the blockage. In an industrial chair so that a movable seat is created, which can be blocked if necessary.

The elastic element is arranged stationary on the spring joint module. This is to be understood in such a way that there is a force support for the elastic element that is stationary on the spring joint module, for example in the form of stationary bearing elements. The actuator is rotatable relative to these bearing elements.

The elastic element may be attached to the bearing elements, but this is not absolutely necessary. That is, in one embodiment of the invention, the elastic element for example, could be rotatable with the control part. Furthermore, the elastic element, in particular if it is rotationally symmetrical, can be provided as a further alternative without a rotational fixing with another element. However, the force support for the elastic element is always provided stationary on the spring joint module.

The spring joint module is, according to the requirements of an industrial chair, with the rotatable control part particularly simple, robust and functionally reliable blocking and releasable.

Also conceivable is a variability of the spring characteristic. For example, different materials or material thicknesses could be provided for this purpose on the elastic element, with the contact points being brought into operative contact with the various materials or material thicknesses during rotation.

Furthermore, the provision of a backdrop for the control part is conceivable, so that one or more predefined levels of flexibility are adjustable.

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.

In an advantageous embodiment, the flexibility of the spring joint between the first and the second position is infinitely adjustable. For example, when turning a distance between bearing points of the elastic element and contact points is set to the control part. The elastic element is provided resiliently within a predetermined range at different locations and the displacement occurs along this predetermined area. Thus, the spring characteristic of the spring joint in terms of their slope, so the differential quotient of spring force and tilt angle, be changed. The spring joint module can be adapted, for example, to different body weights, different preferences or different work situations.

In a preferred embodiment, the elastic element is rotationally symmetrical. In particular, it is designed as a spring ring. Thus, the elastic element is also simple and robust and thus very reliable.

In an advantageous embodiment, the actuating part is designed as a projection provided with projections. This is in particular rotatable about the main axis. Thus, the control part is simple and robust and thus very reliable.

In an advantageous embodiment, the elastic element is mounted on one side at least three bearing points spaced from the seat coupling portion and is on the other side of at least three defined by the extensions contact points with the control part in contact. The first side is the side facing the seat coupling section. The support points can be realized for example with support cylinders, which space the elastic element from the seat coupling portion. Three bearing points and contact points represent a minimum number in this embodiment. This is particularly preferred, because at the same time a stable force support and a maximum adjustment are possible. Thus, the spring characteristic is variable in a wide adjustment range.

In an advantageous embodiment, the elastic element abuts the bearing points in line contact. Optionally or additionally, the elastic element bears against the contact points of the extensions in line contact. Thus, a defined contact and at the same time a maximum flexibility are provided. The line contact is made for example with support cylinders and / or with roller bearings.

In preferred embodiments, the line contact is in each case aligned radially to the main axis. Thus, a uniform deformation of the elastic element during tilting is ensured.

Particularly preferably, the bearing points and the contact points are each arranged uniformly around the circumference of the spring element in one embodiment. The bearing points are arranged directly opposite the contact points in the first position. In the second position, the contact points are arranged at a distance from the bearing points. This allows at the same time a uniform, stable power support and a maximum adjustment.

In one embodiment, the contact points are arranged in the second position in each case in the middle between two bearing points. Thus, the maximum adjustment is advantageously used.

In preferred embodiments, securing extensions for radially securing the elastic element are provided at the bearing points and / or at the contact points. Thus, the elastic element, even when deformed, can not be detached from the bearing points and / or contact points, whereby the functional reliability is ensured.

In advantageous embodiments, the actuating part has roller bearings provided on the extensions which are designed to roll on the flexible element and to produce the line contact. Thus, the frictional resistance during rotation is reduced, which improves operability. A roller bearing has, for example, two bolt holders, a bolt arranged radially to the main axis and a roller mounted on the bolt. The radially inner stud holder is formed lower than the position of the line contact is arranged. The radially outer stud holder is preferably provided higher than the position of the line contact and thus forms an outer securing extension.

In one embodiment, the bearing points are formed with bearing cylinders, wherein a secant-like, the bearing point forming recess is provided on the support cylinder. The contact on the support surface forms with the recess a narrow surface contact strip. This is also to be understood in terms of the above embodiments as a line contact. Thus, this embodiment can be combined with the above embodiments, which contain a line contact.

In a preferred embodiment, the recess extends from one end of the support cylinder to a shoulder. This paragraph preferably forms an inner backup extension.

In a preferred embodiment, the seat coupling portion has a hollow chamber with an undercut. The Fußkoppelabschnitt has an engaging in the undercut Axialsicherungsabschnitt, which extends into the hollow chamber. Thus, the spring joint module is axially held together by an axial securing of the seat coupling portion with the Fußkoppelabschnitt even with a tensile stress, such as lifting an industrial chair on the seat.

In a preferred embodiment, the Axialsicherungsabschnitt is formed as a tube extension, which engages with an attachable thereto attachment in the undercut. Furthermore, the hollow chamber, for example, with a collar sleeve and the undercut, for example, formed with an attached to the seat coupling portion annular disc. Thus, the axial securing is particularly easy to manufacture.

In an advantageous embodiment, the attachment has a lower part and a top part rotatable about the main axis. This is a simple and robust way, a rotation of the seat coupling portion relative to the Fußkoppelabschnitt allows, which is required for example in an industrial swivel chair.

Preferably, a thread is provided on the tube extension and the upper part is screwed therein. For example, the thread may be an external thread and the upper part may be formed as a threaded nut. Thus, the essay is easy to attach.

In preferred embodiments, the axial securing portion extends through a central opening of the spring ring. Thus, an advantageously symmetrical arrangement can be provided.

In an advantageous embodiment of an industrial chair, the foot has a foot pillar, wherein the foot pillar is formed connectable to the Fußkoppelabschnitt. Furthermore, the seat has a substructure, which is connectable to the seat coupling portion. Thus, the spring joint module is easily integrated into a variety of industrial chairs, especially in industrial swivel chairs, industrial swivel stools or industrial high chairs. Also conceivable is the use in industrial saddle seats.

To connect the individual elements are provided, for example, screwed together. For this purpose, external threads can be provided directly on the pillar and on a socket-like seat coupling section, which can be screwed into corresponding internal threads on the foot coupling section and on the substructure. Alternatively, additional fastening means for connecting, in particular additional fastening screws may be provided. Preferably, however, the compound is made with a positive connection.

In preferred embodiments, the seat in the assembled state is resiliently tiltable relative to the foot by the spring joint. In particular, the seat is tiltable about all located in the horizontal plane pivot axes. Thus, an ergonomically advantageous industrial chair is provided.

Furthermore, in advantageous embodiments, a lever is attached to the actuating part, by means of which the actuating part can be rotated by manual operation relative to the elastic element. Thus, the control is advantageous to operate with little effort. Preferably, the lever is arranged such that it is manually accessible and operable by a person sitting on the industrial chair. Thus, the flexibility of the industrial chair can be comfortably and easily changed while sitting on the industrial chair.

In an advantageous embodiment, a positive conical connection is provided between the base and the seat coupling portion and optionally or additionally between the Fußkoppelabschnitt and the seat column. This is in each case formed with an inner cone on one part and an outer cone on the other part. Thus, a centering by the cone shape and a self-reinforcing with the seat force friction between the lateral surfaces are provided at the same time advantageous. Furthermore, the individual modules of the seat, the spring joint module and the foot are easily separable from each other and interchangeable with this compound. In addition, other fastening means may be provided.

In one embodiment, at least one axial pressure pin is provided in the spring joint module. This is designed to transmit a compressive force from the base to the foot column, which serves to trigger a seat height regulation provided on the foot. The pressure pin has a pivotable with the spring joint training. In particular, the pressure pin is linearly guided and formed in two parts, wherein a convex punch is provided at the division point. The seat height adjustment is preferably provided as a gas spring, but other height adjustment devices are conceivable. Thus, the seat height adjustment from the base of the seat, in particular by a person sitting on the chair, operated, whereby the pivotability is not affected.

The above embodiments and developments can, if appropriate, combine with each other as desired. 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.

CONTENT OF THE DRAWING

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 an industrial rotary stool with a spring hinge module in a first position;

2 the industrial rotary stool 1 , with the spring joint module in a second position;

3 a cross-sectional view through an embodiment of a 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 an industrial stool 10 with a spring-joint module 1 in a first position A. The industrial rotary stool has an incompletely 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 a foot pillar 13 provided and the seat is a substructure 14 intended. The spring joint module 1 contains one with the substructure 14 positively connectable seat coupling section 2 , a spring joint 5 and one with the foot column 13 positively connectable foot coupling section 3 , The individual modules foot 12 , Spring joint module 1 and seat 11 are here separated, but shown according to their assembly arrangement.

The spring joint 5 has one at the foot coupling section 3 rotatably mounted collar 7 with three evenly over the circumference of the adjusting ring 7 distributed radial roller bearings 9 on. The roller bearings 9 stand at contact points 16 with the elastic element in line contact. Furthermore, the spring joint 5 at the seat coupling section 2 three evenly on the circumference of the spring ring 6 radially arranged support cylinder 8th on, at which support points 17 are provided for the elastic element. Again, created by the cylindrical shape of the support cylinder 8th a line contact. Between the roller bearings 9 and the bearing cylinders 8th is the spring ring 6 arranged. The support cylinder 8th store the spring washer 6 from the seat coupling section 2 spaced. The roller bearings 9 ensure a sufficient distance of the spring ring 6 to the collar 7 in the areas between the roller bearings 9 , Thus, the spring ring 6 in both directions, ie the seat coupling section 2 and to the collar 7 towards, flexibly deformable.

The seat coupling section 2 and the foot coupling section 3 are through the central openings of the spring ring 6 and the adjusting ring 7 through each other z. B. ball joint connected. Alternatively, a universal joint or another pivotable about the axes of the horizontal plane hinge or bearing may be provided. Preferably, a connection with an axial securing portion and a lock nut is provided, with reference to 3 will be discussed in more detail.

In the illustrated position A are the roller bearings 9 and the support cylinders 8th on the spring ring 6 arranged directly opposite. Thus, in this position A and their line contacts coincide with the spring ring 6 , At a force in the seat 11 Therefore, the force becomes from the bearing cylinders 8th without deformation of the spring ring 6 or with a merely compressible deformation of the spring ring 6 on the roller bearings 9 transfer. The spring joint 5 is blocked in this position A against tilting.

On the collar 7 is a lever 15 attached. By means of this lever 15 is the collar 7 manually rotatable relative to the remaining components. A twisted position B of the adjusting ring 7 is in 2 represented, wherein the Verdrehwinkelpfeil 23 the twist symbolizes. The collar 7 is rotated in the second position B by 60 ° to the first position A, so that the roller bearings 9 each in the middle between two support cylinders 8th are shifted. In this position, a maximum flexibility of the spring joint 5 provided as the distance between support cylinder 8th and roller bearings 9 is greatest. On the spring ring 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.

The spring ring 6 can in this position B to the seat coupling section 2 and to the collar 7 deform flexibly. The seat 11 is relative to the foot 12 around all axes transverse to the main axis, for example around the normal horizontal axes 21 and 22 , flexibly tiltable. This is with the tilting arrows 24 and 25 indicated.

The resistance of the spring joint 5 is continuously adjustable between a blockage in the first position A and a high flexibility in the second position B in the illustrated embodiment. For example, a Verkippbarkeit with higher Verkippwiderstand, so with a higher spring stiffness or a steeper course of the spring characteristic of the spring joint 5 at a twist angle of the adjusting ring 7 from Z. B. 30 ° can be adjusted. As a result, the distance between the with the support cylinders 8th formed Auflagerstellen 17 and the contact points 16 the roller bearing 9 lower, so that with the same force a lower bending moment on the spring ring 6 results.

In this way, the spring joint module 1 For example, be adapted to different types of industrial chairs.

Furthermore, an industrial chair can thus be adapted to different body weights of persons, different preferences of persons or different workplace requirements.

3 shows a cross-sectional view through an embodiment of a spring joint module 1 , This is the seat coupling section 2 with an outer cone 34 and the foot coupling section 3 with an inner cone 35 educated. Through the center of the Konen 34 . 35 run to trigger a gas spring provided pressure pins 36 in the axial direction. The pressure pens 36 are axially guided and formed divided to ensure pivoting. Thus, the height adjustment with the gas spring is always operable, has a pressure pin 36 a convex shaped stamp 51 on, in each Verkippstellung on a flat surface of the other pressure pin 36 can press. A gas spring can be mounted inside a foot 12 be arranged. The cones 34 . 35 are for positive connection with corresponding cones of a seat 11 or a foot 12 educated.

The seat coupling extension 2 has one with a tube extension 37 trained axial securing section on. This extends through the central opening of the spring ring 6 to one on the seat coupling section 2 with a collar sleeve 48 formed hollow chamber 38 , The hollow chamber 38 has an undercut 39 on, which with one at the Sitzkoppelfortsatz 2 screwed ring plate 40 is formed. To an external thread 41 of the tube extension 37 is a threaded nut 33 screwed, which in the undercut 39 engages and thus the axial securing the Fußkoppelabschnitts 3 to the seat coupling section 2 forms.

On the rotatable actuator 7 are roller bearings 9 provided for unrolling on the spring ring 6 are formed. This will make a line contact to the spring washer 6 produced. A roller bearing 9 has two stud holders each 44 . 45 , one radially to the main axis 4 arranged bolts 46 and one on the bolt 46 stored roll 47 on. The radially inner stud holder 44 is formed lower than the position of the line contact at the contact point 16 is arranged. The radially outer stud holder 45 is preferably formed higher than the position of the line contact and thus forms an outer securing extension 32 out.

The bearing points 17 are with radially arranged support cylinders 8th formed, with a secant, the bearing point 17 forming recess 50 on the support cylinder 8th is provided. The recess 50 extends from the radially outer end of the support cylinder 8th up to a paragraph. This paragraph forms the inner securing extension 31 out. The backup processes 31 . 32 serve for radial securing of the spring ring 6 to make the elastic element 6 not deformed or twisted from the bearing points 17 or the contact points 16 can solve.

A rotation of the seat coupling section 2 relative to the foot coupling section 3 around the main axis 4 comes with the washers 42 . 43 realized, which are formed for example of plastic and each other have a low frictional resistance. Thus, the spring joint module 1 be used in an industrial swivel chair or in an industrial swivel stool.

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.

For example, it would be conceivable that the spring element is designed as a solid ring, which is mounted with springs elastically on the seat surface coupling portion or the seat base coupling portion.

The invention has been described above for an industrial chair. However, it is not limited thereto, but could also be used to advantage in an office chair. The term industrial chair is thus also an office chair to understand.

LIST OF REFERENCE NUMBERS

1

Spring hinge module

2

Seat coupling section

3

Fußkoppelabschnitt

4

main axis

5

spring joint

6

Spring element, spring washer

7

Control part, adjusting ring

8th

support cylinders

9

roller bearing

10

Industrial chair, industrial swivel stool

11

Seat

12

foot

13

foot column

14

substructure

15

lever

16

contact point

17

bearing point

21

axis

22

axis

23

Verdrehwinkelpfeil

24

Verkipppfeil

25

Verkipppfeil

31

inner securing extension

32

outer securing extension

33

threaded nut

34

outer cone

35

inner cone

36

pushpin

37

Tubular extension

38

hollow

39

undercut

40

washer

41

external thread

42, 43

washer

44, 45

Bolzenhalter

46

bolt

47

role

48

collar sleeve

49

central opening

50

recess

51

convex stamp

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]

Claims (28)

Spring joint module ( 1 ) for an industrial chair ( 10 ), in particular for an industrial swivel chair or an industrial swivel stool, having a seat coupling section ( 2 ) and a foot coupling section ( 3 ) along a major axis ( 4 ) are arranged and which together via a spring joint ( 5 ) resiliently perpendicular to the main axis ( 4 ) are tiltably connected, wherein the spring joint ( 5 ) an elastic element ( 6 ) and a co-operating actuating part ( 7 ), wherein the elastic element ( 6 ) is stationary, the actuating part ( 7 ) relative to the elastic element ( 6 ) is provided rotatable and the actuating part ( 7 ) and the elastic element ( 6 ) cooperate with each other in such a way 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 ) is tiltable, has. Spring-joint module according to claim 1, characterized in that the flexibility of the spring joint ( 5 ) is infinitely adjustable between the first and the second position (A; B). Spring-joint module according to one of the preceding claims, characterized in that the elastic element ( 6 ) rotationally symmetrical and / or as a spring ring ( 6 ) is trained. Spring-joint module according to one of the preceding claims, characterized in that the actuating part ( 7 ) as with extensions ( 9 ) provided collar ( 7 ) is formed, in particular around the main axis ( 4 ) is rotatable. Spring-joint module according to one of the preceding claims, characterized in that the elastic element ( 6 ) on at least three bearing points ( 17 ) is mounted at a distance from the seat coupling section and on the other side at least three by the projections ( 9 ) defined contact points ( 16 ) with the control part ( 7 ) is in contact. Spring-joint module according to claim 5, characterized in that the elastic element ( 6 ) at the support points ( 17 ) is in line contact. Spring-joint module according to claim 4 or 5, characterized in that the elastic element ( 6 ) at the contact points ( 16 ) of the extensions ( 9 ) is in line contact. Spring joint module according to claim 5 or 6, characterized in that the line contact in each case radially to the main axis ( 4 ) is aligned. Spring-joint module according to one of claims 5 to 8, characterized in that the bearing points ( 17 ) and the contact points ( 16 ) each uniformly around the circumference of the elastic element ( 6 ), the bearing points ( 17 ) in the first position (A) the contact points ( 16 ) are arranged directly opposite and in the second position (B) the contact points ( 16 ) at a distance to the bearing points ( 17 ) are arranged. Spring-joint module according to claim 8, characterized in that the contact points ( 16 ) in the second position (B) in each case in the middle between two bearing points ( 17 ) are arranged. Spring-joint module according to one of claims 5 to 10, characterized in that at the bearing points ( 17 ) and / or at the contact points ( 16 ) Backup processes ( 31 ; 32 ) for radially securing the elastic element ( 6 ) are provided. Spring-joint module according to one of claims 5 to 11, characterized in that the extensions ( 9 ) as roller bearings ( 9 ) which are designed to roll on the elastic element ( 6 ) and are formed for producing the line contact. Spring-joint module according to one of claims 5 to 12, characterized in that the bearing points ( 17 ) with bearing cylinders ( 8th ), wherein a secant, the bearing point ( 17 ) forming recess ( 50 ) on the support cylinder ( 8th ) is provided. Spring joint module according to one of the preceding claims, characterized in that the recess ( 50 ) from one end of the support cylinder ( 8th ) extends to a paragraph which the backup extension ( 31 ) trains. Spring joint module according to one of the preceding claims, characterized in that the seat coupling portion ( 2 ) a hollow chamber ( 38 ) with an undercut ( 39 ) and the foot coupling section ( 2 ) one in the undercut ( 39 ) engaging axial securing portion ( 37 . 33 . 42 . 43 ), which extends into the hollow chamber ( 38 ). Spring joint module according to claim 15, characterized in that the axial securing portion ( 37 . 33 . 42 . 43 ) as a tube extension ( 37 ) is formed, which with an attachable thereto attachment ( 33 . 42 . 43 ) in the undercut ( 39 ) intervenes. Spring-joint module according to claim 16, characterized in that the attachment ( 33 . 42 . 43 ) a lower part ( 43 ) and a rotatable upper part ( 33 . 42 ) having. Spring-joint module according to claim 17, characterized in that on the tube extension ( 37 ) a thread ( 41 ) is provided and the upper part ( 33 ) is screwed into it. Spring joint module according to one of claims 15 to 18, characterized in that the axial securing portion ( 37 . 33 . 42 . 43 ) through a central opening ( 49 ) of the spring ring ( 6 ) extends therethrough. Industrial chair ( 10 ), in particular industrial swivel chair or industrial stool, with a seat ( 11 ) and a foot ( 12 ), with the seat and the foot ( 12 ) via a spring-joint module ( 5 ) are coupled together according to one of the preceding claims or can be coupled. Industrial chair according to claim 20, characterized in that the foot ( 12 ) a foot column ( 13 ), wherein the foot column ( 13 ) with the foot coupling section ( 3 ) is connectable and the seat ( 11 ) a substructure ( 14 ) which is connected to the seat coupling section ( 2 ) is formed connectable. Industrial chair according to one of claims 20 or 21, characterized in that the seat ( 11 ) in the assembled state relative to the foot ( 12 ) by the spring joint ( 5 ) is resiliently tiltable. Industrial chair according to one of claims 20 to 22, characterized in that the seat ( 11 ) in the assembled state relative to the foot ( 12 ) by the spring joint ( 5 ) resilient around all, in the horizontal plane lying pivot axes ( 21 ; 22 ) is tiltable. Industrial chair according to one of claims 20 to 23, characterized in that a lever ( 15 ) is provided, which at the control part ( 7 ) is mounted and by means of which the actuating part ( 7 ) by hand operation relative to the elastic element ( 6 ) is rotatable. Industrial chair according to claim 24, characterized in that the lever ( 15 ) on the industrial chair ( 10 ) is arranged from one on the industrial chair ( 10 ) seated person is manually operated. Industrial chair according to one of claims 20 to 25, characterized in that between the substructure ( 14 ) and the seat coupling section ( 2 ) and / or between the foot coupling section ( 3 ) and the seat pillar ( 13 ) A positive cone connection is provided. Industrial chair according to one of claims 20 to 26, characterized in that in the spring joint module ( 1 ) at least one axial pressure pin ( 36 ) is provided, which for transmitting a compressive force from the substructure ( 14 ) to the foot column ( 13 ) for triggering a foot ( 12 ) provided seat height adjustment is formed and having a pivotable with the spring joint training. Industrial chair according to claim 27, characterized in that the pressure pin ( 36 ) linearly guided and formed in two parts, wherein at the division point a convex stamp ( 51 ) is provided.

Images