EP1701640A1

EP1701640A1 - Dynamic seating device

Info

Publication number: EP1701640A1
Application number: EP05700742A
Authority: EP
Inventors: Jürgen BILLICH; Gunter Kubatsch; Eckart Meyners
Original assignee: Advinova GmbH
Current assignee: Advinova GmbH
Priority date: 2004-01-07
Filing date: 2005-01-07
Publication date: 2006-09-20
Anticipated expiration: 2025-01-07
Also published as: WO2005065491A1; CA2550837A1; DE102004014167A1; DK1701640T3; DE102004002231B3; DE102004053642A1; CN100531621C; DE502005001480D1; CN1909816A; WO2005065491A8; ATE372702T1; EP1701640B1; US20090188410A1; PT1701640E; ES2294673T3

Abstract

A height-adjustable seat or stool has legs supporting a central column (14) with a vertical spindle (22) that terminates in a ball and socket fitting with a truncated cone (19). The cone has a surrounding base flange (24) support for the seat base plate (1) and upholstery (2).

Description

Dynamic seat device

The present invention relates to a dynamic seat device with a seat plate, which is supported by means of a bearing head on a base frame with a height-adjustable column or on a support surface such that it can be tilted and rotated.

"Sitting as a burden" is the title of a book by the team of authors SVSS (Verlag pmsi Holdings Deutschland GmbH, 1993, recommended by the Federal Association of German Back Schools). It shows on 200 pages that sitting correctly is not a rigid posture, but a constant mobility Since these unrestricted movements are not attainable when sitting on normal chairs, different changes of sitting postures, which the person has to consciously take in turns, are proposed in this book. It shows how difficult it is in everyday life and at work However, some of the recommended sitting postures do not allow you to do desk work or other activities such as playing the piano, etc. Work-preventing postures are sometimes proposed that can create physical sensitization processes, but for work and everyday processes over longer periods Duration are unsuitable. These seating and movement deficiencies can be avoided by using a suitable seating device.

BESTATIGUNGSKOPIE From DE 201 10 832 UI, a stool is known as a seat device which is intended to improve sitting from a health point of view, which, by means of cylinder segments arranged one above the other, enables the seat surface to be moved over two horizontal axes offset by 90 °. Due to the distance between the two axes, there is a difference between the pitching and lateral tilting movements. Overall, both pivot points are too far away from the coccyx to allow optimal physiological and homogeneous movement transmission.

Another movable seat device is described in DE 295 16 794 UI, the design feature of which is, however, an elastic seat with a restoring force and thus does not meet the requirements set here.

It is also known from FR 27 94 349 AI to tilt and rotate a seat plate on a hemispherical bearing head, the hemispherical bearing head being mounted in a spherical recess on the underside of the seat plate.

The dynamic seat devices described above have in common that the user is forced to make unnatural and unpleasant movements over a long period of time with the chosen structure of the known seat device. These seat devices are therefore only of limited suitability for work and everyday processes.

Starting from the prior art described above, the present invention has for its object to provide a seat device of the type mentioned that automatically natural movements of the Guaranteed user with freedom of movement at the same time.

The object described above is achieved according to a first teaching of the present invention in that the seat plate has a recess arranged in its center, widening from its top toward its bottom, and in the middle of the seat plate on the top thereof a bearing plate with a dome-shaped Protuberance is attached that the bearing plate rests on the bearing head of a support pin, the bearing head being hemispherical, and that the support pin is fixed to the column or to a plate forming the bearing surface and protrudes through the recess through the seat plate, so that the Tilt the seat plate in all directions and can turn without a stop.

The object presented is further achieved according to a second teaching of the present invention in that a conical bearing shell protrudes through a central bore in the seat plate, which is attached to the underside of the seat plate, that the bearing shell rests on the bearing head of a carrier pin, the bearing head is spherical, and that the support pin is firmly connected to the column or to a plate forming the support surface, so that the seat plate can tilt in all directions and rotate without a stop.

The object presented is finally achieved in accordance with a third teaching of the present invention in that the seat plate is arranged in its center and extends from its top towards its bottom Widening recess has that through the recess in the seat plate from below a conical, reduced in diameter from bottom to top, is passed and fixed, and that the metal cap rests on the bearing head of a support pin and forms the bearing shell, the bearing head being hemispherical is so that there is a common pivot and pivot point above the seat plate.

The present invention thus consists in a dynamic seat device in which, according to the invention, in order to achieve natural movements of the user with simultaneous free mobility, it is provided that the seat plate has a central recess that tapers conically from top to bottom with a bearing shell inserted from below, on the spherical or hemispherical bearing head of a carrier pin rests, so that. a common pivot and pivot point is created above the seat plate, not below.

This invention is a seat device that avoids postural damage, particularly in the expanded spinal area, by allowing free mobility and, at the same time, physiologically centered sitting through a common pivot and pivot point above the seat plate. Even blocked areas of the body can be rehabilitated with it. This seat device can be used both in daily use and therapeutically.

The seat device can offer possibilities to return to a natural upright posture due to the reduced work and everyday processes can no longer be taken, and damage to the body - especially the spine - to be avoided. The seat device should create the possibilities to regain an already lost sensibility for the natural handling of one's own body as well as to offer the possibilities of movement that allow complete freedom when sitting with constant movement. Although people sit, they have to be in constant motion and in constant play with the balance if the natural vibrations of the body are to be preserved and tensions cannot build up at all. Rigid sitting should be avoided so that a constant play with the balance can take place and many natural body functions are not lost or learned again.

In order to achieve this, a seat must allow free tilting movements on all sides without disturbing restoring forces of the seat and the common pivot and pivot point of the seat plate must be at the top, so that there is a natural extension of the spine beyond the coccyx and therefore constant transmission of movement can take place within the entire body.

Further refinements of the invention are specified in the dependent claims and are explained in detail below in connection with the explanation of several exemplary embodiments which takes place on the basis of a drawing. The drawing shows schematically in section: Figure 1 shows a first embodiment of a seat device according to the invention with a height-adjustable column.

Figure 2 shows a second embodiment of a seating device according to the invention for resting on any surface.

3 shows a third exemplary embodiment of a seat device according to the invention with a height-adjustable column;

4 shows a fourth exemplary embodiment of a seating device according to the invention for resting on any surface;

5 shows a fifth exemplary embodiment of a seat device according to the invention with a high adjustable column; and

Fig. 6 a section of a storage in a sixth embodiment of a seat device according to the invention.

1, a seat plate 1, preferably made of wood, is firmly connected by a plurality of screw connections 4 to a bearing plate 7, which forms the upper shell of a slide bearing through a dome-shaped protuberance. A thin foam plate 2 glued to the seat plate 1 covers this bearing plate 7 and ensures a soft, non-slip seat. The center of the seat plate is provided with a recess 8 so that the dome of the bearing plate 7 in one Support pin 6 pressed in hemispherical plastic part 5 and the connected seat plate 1 can tilt at least +/- 20 ° in all directions. In order to keep the friction in this bearing low and still achieve the required stability, 6 steel and its diameter 14 mm were chosen for the material of the support pin. The carrier pin 6 is firmly connected to a height-adjustable column 14 by adhesive, a roll pin 15 or a screw. The column 14 is vertically displaceable and lockable in a base frame consisting of a plate 16 and at least three feet 17. For example, in the manner of a piano chair, the column 14 can be designed as a spindle and engage in a thread of the plate 16, so that the height can be adjusted by rotating the plate 13. Seat plate 1 and a round plate 13 firmly connected to the column 14 form the stop for limiting the possibility of tipping. The plate 13 also prevents tearing of the column 14 if it should be made of wood. In order to prevent lifting of the seat plate 1 during transport, a spring washer 11 is pushed onto the carrier pin 6 and a disk 12 mounted between the spring washer 11 and plate 3 is dimensioned such that it does not hinder the tilting movements of the seat plate 1 and also not through the central hole in the Plate 3, which is firmly connected to the underside of the seat plate 1, fits.

2 shows an embodiment without height adjustment. Here the base is replaced by a plate 10 so that the seat device can be placed on any surface suitable for seating. A seat plate 1, preferably made of wood, is provided according to FIG. 3 with a central conical bore, through which the conical bearing shell 19 projects and is firmly connected to the underside of the seat plate 1 by fastening elements 4. As the lower part of the plain bearing, the carrier pin 6 is connected at the tip to a spherical bearing head 5. In between is a cap 20 made of self-lubricating plastic. This construction ensures that the bearing point is above the seat plate 1 and that it can tilt approximately ± 20 ° in all directions. Against lifting the seat plate 1 from the carrier pin 6, a conical holder 21, through which the top of the bearing head 5 does not fit, is fastened together with the conical bearing shell 19 on the underside of the seat plate 1. A foam plate 2 glued to the seat plate 1 covers the conical bearing shell 19 and ensures a soft, non-slip seat. The carrier pin 6 is firmly connected to a height-adjustable column 14 by adhesive, a roll pin 15 or a thread 22. The column 14 is vertically displaceable and lockable in a base frame consisting of a plate 16 and at least three feet 17. For example, in the manner of a piano chair, the column 14 can be designed as a spindle and engage in a thread of the plate 16, so that the height can be adjusted by rotating the plate 13. Seat plate 1 and a round plate 13 firmly connected to the column 14 form the stop for limiting the possibility of tipping. The plate 13 also prevents tearing of the column 14 if it should be made of wood. An embodiment without height adjustment is shown in FIG. 4. Here the base is replaced by a plate 10, so that the seat device can be placed on any surface suitable for seating.

5, a conical bearing shell 19 provided with an edge 24 at the bottom is fastened to the seat plate 1 at the bottom by a recess 8 in the seat plate 1, which is preferably made of wood. A foam plate 2 glued to the seat plate 1 covers the seat plate 1 and the bearing shell 19 and ensures a soft, non-slip seat surface. The support pin 6 is firmly connected to a high adjustable column 14 by adhesive, a clamping pin or a thread 22 and forms the lower part of the bearing, so that the seat plate 1 with the bearing shell 19 m can tilt all directions as far as the angle of the Cone of the bearing shell 19 allows it and can be rotated without a stop. In order to keep the friction in this bearing low and still achieve the required stability, metal was chosen for the material of the support pin 6 and its head 5 consists of a hemispherical plastic part which is held in position by an engaging pin 23. The column 14 is vertically displaceable and lockable in a base frame consisting of a plate 16 and at least three feet 17. For example, in the manner of a piano chair, the column 14 can be designed as a spindle and engage in a thread of the plate 16, so that the height can be adjusted by rotating the plate 13, which is firmly connected to the column 14. Seat plate 1 and the round plate 13 form the stop to limit the possibility of tipping. The plate 13 also prevents tearing of the column 14 when this should be made of wood. In order to prevent the seat plate 1 from lifting off, the bearing shell 19 is pressed into a ring shape on its constriction 25 after being placed on the carrier pin 6.

Another design for preventing the seat plate 1 from lifting off is shown in FIG. 6. A two-part hollow cone 26, which extends to the bearing head 5, is inserted into the bearing shell 19 after it has been placed on the carrier pin 6 and held with an annular metal plate 27 which is fastened together with the bearing shell 19 to the underside of the seat plate 1 , The hollow cone 26 can also consist of a single part if the diameter of the shaft of the carrier pin 6 is smaller than its bearing head.

Reference symbol list:

1 seat plate

2 elastic material or padding

3 plate

4 fastener

5 bearing head

6 carrier pin

7 bearing plate

8 recess

9 fastener

10 plate

11 Pressed spring washer

12 disc mounted on the carrier pin

13 plate

14 pillar

15 dowel pin

16 plate

17 feet

18 recess

19 bearing shell

20 cap

21 conical bracket

22 threads

23 pen

24 edge of the bearing shell

25 constriction

26 hollow cone

27 annular metal plate

Claims

P A T E N T A N S P R Ü C H E

Dynamic seat device with a seat plate (1), which is mounted by means of a bearing head (5) on a base frame with a height-adjustable column (14) or on a support surface, characterized in that

that the seat plate (1) has a recess (8) which is arranged in its center and widens from its top towards its bottom,

that a bearing plate (7) with a dome-shaped flush is fastened in the middle of the seat plate (1),

that the bearing plate (7) rests on the bearing head (5) of a carrier pin (6), the bearing head (5) being hemispherical, and

that the carrier pin (6) is fixedly connected to the column (14) or to a plate (10) forming the support surface and projects through the recess (8) through the seat plate (1),

so that the seat plate (1) can tilt in all directions and turn without a stop.

2. Dynamic seating device according to claim 1, characterized in that the carrier pin (6) consists of a metal tube, in the upper end of which a bearing head (5) made of self-lubricating plastic is pressed.

3. Dynamic seating device according to claim 1, characterized in that the carrier pin (6) and the bearing head (5) consist of one part.

4. Dynamic seating device according to claim 2, characterized in that the radius of the dome-shaped protuberance of the bearing plate (7) and the radius of the bearing head (5) is less than 7 mm.

5. Dynamic seat device according to claim 1, characterized in that a plate (13) is provided which is arranged under the seat plate (1) and connected to the column (14) or to the plate (10) such that the tilting movement of the Seat plate (1) is limited.

6. Dynamic seating device according to claim 1, characterized in that a spring washer (11) pressed onto the support pin (6), a washer (12) mounted below the spring washer (11) on the support pin (6), the inside diameter of which is so much larger than the support pin (6) is that it can tilt relative to the disc (12) by at least 20 °, and a plate (6) arranged below the disc (12) on the support pin and firmly connected to the underside of the seat plate (1) 3) whose The center hole is so large that the tilting of the seat plate (1) is not impaired and the pane (12) cannot fall through, so that lifting of the seat plate (1) is prevented.

7. Dynamic seat device according to claim 6, characterized in that a recess (18) is provided on the underside of the seat plate (1) such that a horizontal movement of the disc (12) parallel to the plate (3) is permitted.

8. Dynamic seat device according to claim 6, characterized in that a spacer is provided between the plate (3) and the underside of the seat plate (1), such that the movement of the disc (12) in all directions parallel to the plate (3) is allowed.

9. Dynamic seating device according to claim 5, characterized in that the column (14) and the plate (13) consists of wood, the plate (13) being firmly glued to the column (14).

10. Dynamic seat device according to claim 1, characterized in that the surface of the 'seat plate (1) is padded with elastic material (2) and covered with a cover fabric or leather.

11. Dynamic seat device with a seat plate (1), which by means of a bearing head (5) on a base with a height-adjustable column (14) or is mounted on a support surface, characterized in that a conical bearing shell (19) projects through a central bore in the seat plate (1) and is fastened to the underside of the seat plate (1) such that the bearing shell (19) on the bearing head (5) a support pin (6) rests, the bearing head (5) being spherical, and that the support pin (6) is firmly connected to the column (14) or to a plate (10) forming the support surface, so that the Tilt the seat plate (1) in all directions and can turn without a stop.

12. Dynamic seating device according to claim 11, characterized in that a cap (20) made of plastic is arranged between the conical bearing shell (19) and the spherical bearing head (5) of the carrier pin (6).

13. Dynamic seat device according to claim 11, characterized in that a conical holder (21) is provided, the upper opening is smaller than the bearing head (5) and which is fastened together with the bearing shell (19) to the underside of the seat plate (1) is such that when the seat plate (1) is lifted, its lifting is prevented.

14. Dynamic seat device according to claim 11, characterized in that a constriction (25) of the bearing shell (19) is provided below the bearing head (5), such that when the seat plate (1) is lifted, its lifting is prevented.

15. Dynamic seat device with a seat plate (1), which is mounted by means of a bearing head (5) on a base frame with a high-adjustable column (14) or on a support surface, characterized in that the seat plate (1) has an arranged in its center, has from its top in the direction of its underside widening recess (8) that through the recess (8) in the seat plate (1) from below a conical, reduced from bottom to top in diameter, is passed and fixed, and that Metal cap rests on the bearing head (5) of a carrier pin (6) and forms the bearing shell (19), the bearing head (5) being hemispherical, so that a common pivot and pivot point is created above the seat plate (1).

16. Dynamic seating device according to claim 15, characterized in that the conical bearing shell (19) is provided at the bottom with an edge (25) with which the bearing shell (19) can be fastened to the seat plate (1) from below.

17. Dynamic seating device according to claim 15 or 16, characterized in that the carrier pin (6) is cylindrical in the lower part, in the adjoining part as a truncated cone and hemispherical in the upper part and is provided with a vertical pin (23) in the middle, which receives and fixes the bearing head (5) made of self-lubricating plastic through its bore.

18. Dynamic seating device according to one of claims 15 to 17, characterized in that the conical bearing shell (19) has been provided after being placed on the carrier pin (6) with a constriction (25) which allows the bearing shell (19) to be lifted off the carrier pin (6) prevented.

19. Dynamic seating device according to one of claims 15 to 17, characterized in that a hollow, divided truncated cone (26) is provided in the bearing shell (19), the upper opening of which is smaller than the diameter of the spherical bearing head (5) of the carrier pin (6) and which is attached to the underside of the seat plate (1) by means of a washer (27) together with the edge (24) of the bearing shell (19), such that after the conical bearing shell (19) has been placed on the carrier pin ( 6) the lifting of the seat plate (1) is prevented.

20. Dynamic seating device according to claim 15, 17 or 18, characterized in that the lower cylindrical part of the support pin (6) is provided with a thread (22) and engages in a concentric bore of the column (14).

21. Dynamic seat device according to one of claims 15 to 20, characterized in that the seat plate (1) is provided with an upholstery (2),