EP4081072A1 - Stuhl bzw. ein gelenksystem für einen stuhl oder eine sitzvorrichtung - Google Patents
Stuhl bzw. ein gelenksystem für einen stuhl oder eine sitzvorrichtungInfo
- Publication number
- EP4081072A1 EP4081072A1 EP21700542.0A EP21700542A EP4081072A1 EP 4081072 A1 EP4081072 A1 EP 4081072A1 EP 21700542 A EP21700542 A EP 21700542A EP 4081072 A1 EP4081072 A1 EP 4081072A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- receiving cylinder
- wall
- joint
- cylinder
- bearing gap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 230000007423 decrease Effects 0.000 abstract 1
- 230000033001 locomotion Effects 0.000 description 7
- UQMRAFJOBWOFNS-UHFFFAOYSA-N butyl 2-(2,4-dichlorophenoxy)acetate Chemical compound CCCCOC(=O)COC1=CC=C(Cl)C=C1Cl UQMRAFJOBWOFNS-UHFFFAOYSA-N 0.000 description 5
- 230000003068 static effect Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 210000003205 muscle Anatomy 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007850 degeneration Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 210000001331 nose Anatomy 0.000 description 1
- 230000035479 physiological effects, processes and functions Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/02—Rocking chairs
- A47C3/025—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/20—Chairs or stools with vertically-adjustable seats
- A47C3/24—Chairs or stools with vertically-adjustable seats with vertical spindle
- A47C3/245—Chairs or stools with vertically-adjustable seats with vertical spindle resiliently supported
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/40—Support for the head or the back for the back
- A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
- A47C7/448—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with resilient blocks
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C9/00—Stools for specified purposes
- A47C9/002—Stools for specified purposes with exercising means or having special therapeutic or ergonomic effects
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/02—Rocking chairs
- A47C3/025—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame
- A47C3/026—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame with central column, e.g. rocking office chairs; Tilting chairs
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/002—Chair or stool bases
- A47C7/004—Chair or stool bases for chairs or stools with central column, e.g. office chairs
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C9/00—Stools for specified purposes
- A47C9/02—Office stools not provided for in main groups A47C1/00, A47C3/00 or A47C7/00; Workshop stools
- A47C9/025—Stools for standing or leaning against, e.g. in a semi-standing or half-seated position
Definitions
- the invention relates to a chair or a joint system for a chair or a seating device.
- a floor-level base section base or a support
- an intermediate section e.g. several legs or a chair column
- an upper seat section e.g. several legs or a chair column
- most chairs, stools or seats have a rigid connection for the two interfaces between the base, the intermediate section and the seat.
- Recent developments have provided a flexible connection for at least one of these interfaces with an associated reset mechanism.
- the present invention is concerned with those seats that are also referred to as an active dynamic chair, in particular designed as a pendulum seat or pendulum chair, with a flexible connection between the base and the intermediate section, here a chair column.
- Such movable or active-dynamic chairs differ from static chairs in that the chair user sitting on the chair can carry out movements of the trunk and body together with the seat part, which is not possible with static chairs.
- Human physiology also prefers dynamic movements to static rest when sitting.
- Chairs that also support the weight of the legs should not only enable dynamic movement, but also offer ergonomic support for the seat user.
- Seating furniture is in most cases equipped with appropriately designed seats and backrests in an anatomically most favorable position, so that the body, in particular the back, is supported.
- Seating furniture of this type is often perceived as comfortable, but has the decisive disadvantage that the body only sits passively, ie the back muscles are hardly stressed and the intervertebral discs experience a permanent pressure load.
- Such an actively dynamic pendulum chair is known from DE 42 44 657 02, for example.
- a generic seat device is described here, which consists of a foot part, an intermediate piece connected to the foot part and a seat part rigidly connected to the intermediate piece, the intermediate piece being tiltable in any lateral direction by means of an elastically deformable connecting element in an opening of the foot part ten and is returned to its neutral position (rest position) in the unloaded state.
- US 5921926 also shows an active-dynamic pendulum chair, which is also based on the principle of an inverted pendulum.
- Such chairs have a defined movement path and a structural reset mechanism, which at the same time have a protective device to prevent the chair from tipping over.
- the seat tilts backwards from the horizontal position into a sloping position pointing away from the body center when there is a pendulum movement.
- pendulum chairs allow the seat to swing back and forth from the undeflected starting position into different deflected positions, whereby the seat surface tilts from its horizontal position to an inclined position.
- the tilt angle depends on the direction of deflection and the degree of deflection.
- EP 0 808 116 B1 describes a self-aligning bearing which is arranged between the column and the foot part.
- the self-aligning bearing is designed as an oscillating metal and consists of an essentially tubular upper part, the upper end of which is used for a wedge connection, a lower part which is firmly attached to an arm of the foot part and one between the upper part and the lower part arranged elastic material.
- the self-aligning bearing allows the seat part to swing back and forth.
- the present invention is therefore based on the object of optimizing the aforementioned aspects and providing an actively dynamic chair in which the seat user can perform safe and varied movements of the seat part in a defined range of motion and the pendulum joint can be produced inexpensively and has a long service life.
- a joint arrangement comprising a hollow cylinder-shaped receiving cylinder, which stretches in a cylinder axis direction, designed to accommodate one end of a chair column of an active dynamic pendulum chair, this being in a substantially hollow cylinder-shaped outer joint shell composed of two or more parts from joint shell segments is, is movably mounted, the moveable mounting of the receiving cylinder being realized by means of deformable elastic elements, which are variable in shape and position in a bearing gap between an outer wall section of the receiving cylinder and an inner wall section of the joint shell and the receiving cylinder can be actuated depending on the force, whereby the shape and / or position of the elastic elements changes, due to the fact that the gap dimension of the bearing gap is viewed in a radial direction when the receiving cylinder is actuated in a cylinder axis attention, changed, preferably reduced.
- the concept therefore uses opposite outer circumferential surfaces of the receiving cylinder with the same orientation in the cone angle in the inclination on the one hand and inner circumferential surfaces of the bearing shell on the other hand, between which a bearing gap is formed as intended for the reception of elastic elements. Due to the translational displacement of the receiving cylinder in the axial direction, the gap size is reduced, as this then moves the conical outer surfaces towards each other and an elastic element lying in between is elastically deformed and possibly shifted along the outer surface or moved along this surface.
- An embodiment of a joint arrangement is therefore particularly advantageous, the movable mounting of the receiving cylinder being implemented by means of deformable elastic elements which are arranged in the bearing gap between a conically tapering outer wall section of the receiving cylinder and a conically tapering inner wall section of the joint shell and can be changed in shape and position the receiving cylinder can be actuated depending on the force in a cylinder axis direction, whereby the shape and / or position of the elastic elements changes in that the gap dimension of the bearing gap is reduced in a radial direction (Rs), in particular along the entire circumference.
- Rs radial direction
- the said conical lateral surfaces run or are oriented parallel to one another, so that when viewed in a translatory manner in the axial direction of the receiving cylinder, the bearing gap lying between them changes linearly proportionally.
- the inclination i.e. the angles of the conical shell surfaces, are designed to be slightly different from the axial direction of extent.
- the outer wall of the receiving cylinder has at least a first upper and a second lower wall section offset in the cylinder axis direction, each conically tapering, and preferably a radially constricted wall section with a smaller diameter between the two wall sections.
- ser is provided, which, preferably viewed in a longitudinal section through the receiving cylinder, has a concave shape.
- the outer wall of the receiving cylinder is preferably also provided at the lower end of the upper concave wall section, a projection extending radially outward in the direction of the bearing gap, which preferably runs partially or completely circumferentially along the outer wall and against which an elastic element arranged in the bearing gap in this area is supported.
- the inner wall of the hollow cylindrical outer joint shell has at least a first upper and a second lower inner wall section offset in the cylinder axis direction (Z), each conically tapering inner wall section and a radially inwardly extending projection is provided between the two inner wall sections which preferably extends partially or completely circumferentially along the inner wall in the circumferential direction.
- the aforementioned measures of the projections in particular define end-side limits in order to limit the translational displacement of both the elastic's elements and the receiving cylinder.
- these projections also represent end stops of the bearing.
- tapered inner wall sections face the tapered outer wall sections in the radial direction and are relatively offset in their position in the axial direction to the intended and permissible immersion depth of the To define receiving cylinder in the hollow cylindrical joint shell.
- a further advantageous embodiment of the invention provides that the elastic elements introduced into the bearing gaps are designed in a ring shape and are arranged completely circumferentially in the bearing gap. Ring-shaped elastic rings with circular or oval cross-sections are suitable for this purpose.
- the force required to actuate the receiving cylinder increases in a cylinder axis direction by reducing the gap size due to the relative displacement of said outer surfaces and thereby increasingly compressing and deforming the elastic elements with increasing force.
- This is used to ensure that the deflectability of the seat and the chair column in the pendulum direction of such a chair automatically changes depending on the weight of the seat user and, with increasing weight of the seat user, the receiving cylinder dips deeper into the hollow cylinder-shaped joint shell and thus the deformation of the elastic Elements increases, but this limits the deflectability of the pendulum chair more.
- Another aspect of the present invention relates to a seat with a chair column, the end of which is fastened in a joint arrangement according to the invention close to the floor, in particular is inserted with its lower end into the hollow cylindrical receiving cylinder.
- Another aspect of the present invention also relates to the simplified assembly, namely an assembly method for assembling the parts of a joint arrangement as described with the following steps: a. Attaching a first elastic ring-shaped element to the outer jacket of the hollow cylindrical receiving cylinder in the area of the upper conically tapering wall section and b. Attaching a second elastic annular element on the outer jacket of the hollow cylindrical receiving cylinder in the loading area of the lower conical wall section and then the c. Introducing the receiving cylinder between the joint socket segments and connecting the joint socket segments by means of connecting means.
- FIG. 1 shows a perspective view of an exemplary embodiment of a joint arrangement according to the invention in a non-assembled configuration
- FIG. 2 shows a partially sectioned perspective view of a first undeflected position of the joint arrangement according to FIG. 1;
- FIG. 3 shows a partially sectioned perspective view of a second, namely vertically loaded position of the joint arrangement according to FIG. 1, in which a force acts on the pendulum column from above;
- FIG. 4 shows a sectional view through the view according to FIG. 2;
- FIGS. 3 and 5 shows a sectional view through the view according to FIGS. 3 and
- FIG. 6 is a view for explaining the inclination of the conically tapering lateral surfaces.
- FIG 1 is a perspective view of an embodiment of a joint arrangement 10 according to the invention in an unassembled Compilation shown in which the essential items can be seen.
- the joint arrangement 10 comprises a hollow cylinder-shaped receiving cylinder 20 which is arranged centrally and extends in a cylinder axis direction Z. In this view, the part near the floor is below, while a chair column 30 of an actively dynamic pendulum chair extends upwards. The chair column 30 is inserted into the cylindrical receptacle of the receiving cylinder 20, as can be seen in FIGS.
- two joint socket segments 45 of a two-part hollow cylindrical outer joint socket 40 are shown.
- the two joint shell segments 45 are connected to one another by connecting means 46, so that the joint shell 40 receives the receiving cylinder 20 while forming a bearing gap 60, as shown in FIGS. 2 to 5.
- the movable mounting of the receiving cylinder 20 in the joint shell 40 is implemented by means of two deformable elastic ring elements 50. These are variable in shape and position in said bearing gap 60 between an outer wall section 21, 22 of the receiving cylinder 20 and an inner wall section 41, 42 of the joint socket 40, namely between a conically tapering outer wall section 21, 22 of the receiving cylinder 20 and a conically tapering inner wall section 41, 42 of the joint shell 40.
- the receiving cylinder 20, as shown in FIGS. 3 and 5, can be actuated downward as a function of force from the position as shown in FIGS. 2 and 4.
- the shape and position of the elastic elements 50 change, as can be seen clearly in FIGS. 3 and 5 in comparison to FIGS. 2 and 4.
- the gap dimension is constant all around and therefore according to the distance between the lateral surface as a function of the difference between the outer diameter of the receiving cylinder 20 in this area and the inner diameter of the joint socket 40 in this sectional plane.
- the gap dimension of the bearing gap 60 is reduced in the area of the conical lateral surfaces in the radial direction (Rs) when the receiving cylinder 20 is actuated in the cylinder axis direction Z downwards. As a result, the elastic ring elements 50 are deformed.
- the outer wall of the receiving cylinder 20 has a first d. H. upper and a second d. H. lower wall section 21 or 22 offset in the cylinder axis direction Z, each conically tapering.
- a radially constricted wall section 26 with a smaller diameter which has a concave shape, is provided between the two wall sections 21, 22.
- a projection 43 protrudes from the inner wall surface of the bearing shell 40 in the direction of this concave shape.
- the outer wall of the receiving cylinder 20 has a projection 23 protruding radially outward in the direction of the bearing gap 60.
- This projection 23 is provided around the outer wall in an annular manner.
- the elastic ring element 50 arranged in this area in the bearing gap 60 rests against this projection 23, as can be clearly seen in FIGS. 2 and 3, for example.
- a projection 24 extending radially outward into the bearing gap 60 is provided, which likewise runs completely circumferentially along the outer wall and against which a projection 24 in the bearing gap 60 in this Area arranged further, namely second elastic ring element 50 is supported.
- the two concavely tapering outer jacket surfaces on the receiving cylinder 20 are approximately identical in shape.
- the inner wall of the hollow cylinder shaped outer joint socket 40 has a first upper and a second lower, offset in the cylinder axis direction Z, each conically tapering inner wall section 41 and inner wall section 42. Between the two inner wall sections 41, 42 is the aforementioned projection 43, which is also completely in the circumferential direction extends circumferentially along the inner wall. Furthermore, noses 47 are provided on the joint socket, which in this exemplary embodiment are arranged completely circumferentially, but can also be attached only in sequential sections. These serve as counter bearings for the elastic elements 50.
- FIG. 6 shows a view to explain the inclination of the conically tapering lateral surfaces.
- the respective cone angles a with respect to the perpendicular S are equal in terms of amount and represent alternating angles.
- the distance between the wall sections running parallel corresponds to the diameter D of the elastic ring element 50, which is circular in cross section.
- the housing shell 40 can be provided with a flange at the lower end in order to fasten it to a standing or base plate close to the floor.
Landscapes
- Chairs Characterized By Structure (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020116642.7A DE102020116642A1 (de) | 2020-06-24 | 2020-06-24 | Stuhl bzw. ein Gelenksystem für einen Stuhl oder eine Sitzvorrichtung |
PCT/EP2021/050469 WO2021259522A1 (de) | 2020-06-24 | 2021-01-12 | Stuhl bzw. ein gelenksystem für einen stuhl oder eine sitzvorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP4081072A1 true EP4081072A1 (de) | 2022-11-02 |
EP4081072B1 EP4081072B1 (de) | 2023-08-09 |
Family
ID=74186689
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21700542.0A Active EP4081072B1 (de) | 2020-06-24 | 2021-01-12 | Stuhl bzw. ein gelenksystem für einen stuhl oder eine sitzvorrichtung |
Country Status (5)
Country | Link |
---|---|
US (1) | US20230263308A1 (de) |
EP (1) | EP4081072B1 (de) |
CN (1) | CN115151166A (de) |
DE (1) | DE102020116642A1 (de) |
WO (1) | WO2021259522A1 (de) |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4244657C2 (de) | 1992-03-27 | 1998-11-26 | Josef Gloeckl | Aktivdynamische Sitzvorrichtung |
DE19504121A1 (de) | 1995-02-08 | 1996-08-14 | Josef Gloeckl | Pendelhocker mit zentral unter der Sitzfläche angeordneter Kontakteinrichtung |
US5921926A (en) | 1997-07-28 | 1999-07-13 | University Of Central Florida | Three dimensional optical imaging colposcopy |
FI105893B (fi) * | 1998-06-03 | 2000-10-31 | Lappset Group Oy | Jousinivelrakenne |
US6209958B1 (en) * | 1998-10-23 | 2001-04-03 | Haworth, Inc. | Universal tilt mechanism for a chair |
US6601818B1 (en) * | 2000-10-12 | 2003-08-05 | Lord Corporation | Tilting mount with integral flange |
DE10338549A1 (de) | 2003-08-19 | 2005-03-24 | GLÖCKL, Josef | Pendelstuhl |
DE202005001741U1 (de) * | 2005-02-03 | 2005-03-31 | Gloeckl Josef | Tragelement für ein Sitzmöbel |
DE102009019880A1 (de) | 2009-05-06 | 2011-01-20 | Josef GLÖCKL | Bewegliches Sitzmöbel mit einer Vorrichtung zum Steuern einer Rückstellkraft |
US10772432B2 (en) * | 2016-07-28 | 2020-09-15 | Bright Company Inc. | Foot and leg support device for a chair |
-
2020
- 2020-06-24 DE DE102020116642.7A patent/DE102020116642A1/de active Pending
-
2021
- 2021-01-12 EP EP21700542.0A patent/EP4081072B1/de active Active
- 2021-01-12 US US17/922,573 patent/US20230263308A1/en active Pending
- 2021-01-12 CN CN202180012328.3A patent/CN115151166A/zh active Pending
- 2021-01-12 WO PCT/EP2021/050469 patent/WO2021259522A1/de active Application Filing
Also Published As
Publication number | Publication date |
---|---|
CN115151166A (zh) | 2022-10-04 |
DE102020116642A1 (de) | 2021-12-30 |
US20230263308A1 (en) | 2023-08-24 |
WO2021259522A1 (de) | 2021-12-30 |
EP4081072B1 (de) | 2023-08-09 |
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