EP3817628A1 - Stuhl - Google Patents
StuhlInfo
- Publication number
- EP3817628A1 EP3817628A1 EP19745041.4A EP19745041A EP3817628A1 EP 3817628 A1 EP3817628 A1 EP 3817628A1 EP 19745041 A EP19745041 A EP 19745041A EP 3817628 A1 EP3817628 A1 EP 3817628A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- abutment
- chair
- seat
- spring
- connecting element
- 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
- 230000005540 biological transmission Effects 0.000 claims description 17
- 230000001360 synchronised effect Effects 0.000 claims description 13
- 238000006073 displacement reaction Methods 0.000 description 7
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 230000001419 dependent effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
- A47C1/03266—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with adjustable elasticity
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
- A47C1/03272—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs
Definitions
- the invention relates to a chair according to the preamble of claim 5.
- a chair of the type mentioned is known from patent document DE 10 2007 059 985 B3.
- This chair consists of a chair base on which a seat and a backrest connected to the seat via a synchronous mechanism are movably supported, whereby a spring pressing the seat into a basic position of the chair and an abutment rotatably mounted on the chair base are provided, whereby the Abutment is formed on the one hand with a connecting element connected to a front edge of the seat and on the other hand cooperating with one end of the spring.
- the spring for setting an effective spring force is also designed to be positionable in different positions on the abutment.
- the front edge of the seat 20 and also the abutment are arranged on a front seat link, which in turn is pivotally mounted on the chair base.
- the invention has for its object to improve a chair of the type mentioned.
- a chair is to be created in which, unlike the aforementioned prior art, the front edge of the chair does not rise when the backrest is loaded.
- This object is achieved with a chair of the type mentioned by the features listed in the characterizing part of patent claim 1.
- the connecting element cooperating with the bearing is designed to be guided in a longitudinal guide and is arranged in the highest position of the longitudinal guide in the basic position of the seat.
- the solution 10 according to the invention is characterized in that the front edge of the seat is not raised when the chair is loaded, thanks to the longitudinal guidance and despite the fact that the spring force can be adjusted simultaneously via a rotatably mounted abutment.
- the longitudinal guide in the upright position of the chair is optionally completely horizontal (then the connecting element is in the highest position of the longitudinal guide in any position) or the longitudinal guide is in comparison to the horizontal starting from the highest position In the basic position, it slopes gently so that the front edge of the seat lowers when the chair is loaded, but does not lift under any circumstances.
- the abutment bearing has a toothing on the longitudinal guide side and that between the longitudinal guide and the toothing for power transmission between the spring and the seat there is an intermediate member also toothed on the toothing side and pivotably mounted to the longitudinal guide, also called power transmission device, an30 is arranged.
- FIG. 1 shows a perspective section of the synchronous mechanism in FIG. 10
- Figure 2 is a perspective view in section of the synchronous mechanism according to Figure 1 in the loaded position with the "soft" acting spring; 15
- Figure 3 is a perspective view of the synchronous mechanism according to Figure 1 in the unloaded position with a "hard” acting spring;
- Figure 4 is a perspective sectional view of the synchronizing mechanism according to Figure 1 in the loaded position with the "hard” 20 acting spring;
- FIG 5 the chair of the invention, in which the in
- Figures 1 to 4 shown synchronous mechanism is located below the seat or the seat;
- Figure 6 is a perspective sectional view of the synchronizing mechanism ge25 according to Figure 3 in the unloaded position with a "hard” acting spring;
- FIG. 9 shows a perspective exploded view of the abutment according to FIG. 1, in particular with the actuating element (schematic) and the actuating wheel;
- FIG. 10 shows in perspective a part of the synchronous mechanism according to FIG. 1, in particular the abutment in the unloaded position (in this position the spring force can be set) with a spring that is set to be “soft”;
- FIG. 14 in perspective and in section, a part of the synchronous mechanism according to FIG. 2, in particular the locking mechanism when the chair is under load and thus in the blocked position.
- the chair shown in FIGS. 1 to 14 initially consists in a known manner of a chair base 1, preferably provided with a foot 30 20, on which a seat 2 and a backrest 3 connected to the seat 2 via a synchronous mechanism are movably mounted, a spring 4 pressing the seat 2 into a basic position of the chair and a counter bearing 5 rotatably mounted on the chair base 1, the counter bearing 5 on the one hand with a connecting element 7 connected to a front edge of the seat 2 and on the other hand 5 with one end of the spring 4 is designed to cooperate.
- two seat supports 10 which are connected to one another via the connecting element 7 are particularly preferably provided, the chair base 1 being arranged between the two seat supports 10 and the connecting element 7 being displaceably mounted on the chair base 1.
- a backrest support 15 9 pivotable about a horizontal axis is mounted on the chair base 1.
- the backrest support 9 and the two seat supports 10 are preferably connected to one another via two swivel joints 11 20 that are movable independently of the chair base 1 and have horizontal axes.
- the connecting element 7 cooperating with the abutment 5 is designed to be guided in a longitudinal guide 8 and is arranged in the highest position of the longitudinal guide 8 in the basic position of the seat. As already explained at the beginning, this requirement enables Creation of a chair in which the front edge practically does not drop even under load.
- the longitudinal guide 8 for the connecting element 75 is designed to be sloping when viewed from a front edge of the seat 2 in the direction of the backrest 3 when the chair is used.
- the abutment 5 has a bearing surface 5.1, on which 10 one end of the spring 4 can be positioned in different positions in order to set an effective spring force.
- an actuating element 6, which transmits only tensile forces, is provided for determining the position of one end of the spring 4 on the bearing surface 5.1.
- the actuating element 6 is optionally designed as a chain (see FIGS. 1 to 14) or a rope (not shown separately). 20
- a groove 16 (see in particular FIG. 9) is particularly preferably provided on the abutment 5 for guiding the actuating element 6. This is wider than the actuating element 6, so that it is mounted in the groove 16 so as to be displaceable.
- a setting wheel 17 having a horizontal axis of rotation when the chair is used is provided for adjusting the setting element 6. It is also particularly preferably provided that the adjusting wheel 17 is arranged on a rotary shaft 22 which is rotatably supported on the abutment 5 if necessary.
- the longitudinal guide 8 it is also particularly preferably provided that, in the upright position of the chair, it is designed to fall from a front edge of the seat 2 to the horizontal at an angle of approximately 10 ° to the backrest 3. Furthermore, it is preferably provided that the longitudinal guide 8 is semicircular at its two ends, matching the connecting element 107 formed as a cylindrical rod.
- the spring 4 mentioned at the outset which is particularly preferably optionally designed as a helical compression spring and / or a telescopic guide 14 is arranged in the interior thereof, 15 is also particularly preferably provided that one end of the spring 4 with the abutment 5 and another end of the spring 4 is connected to a pivot bearing 12 provided on the chair base 1.
- the spring 4 viewed in more detail, is designed to be rotatable about a horizontal axis about the pivot bearing 12 20.
- a second spring 18, which is preferably also designed as a helical compression spring, is particularly preferably arranged between the connecting element 7 and the chair base 1 for specifying a defined pretension, and a telescopic guide 19 is preferably also arranged in the interior thereof.
- a telescopic guide 19 is preferably also arranged in the interior thereof.
- the longitudinal axes (along which the compression of the springs takes place) of the spring 4 and the second spring 18 lie in mutually parallel planes.
- a pivot bearing 15 is particularly preferably provided on the chair base 10 (see in particular FIG. 10).
- This pivot bearing 15, which preferably has a horizontal axis of rotation in the upright position of the chair, is also arranged on an end of the abutment 5 facing away from the seat.
- the abovementioned bearing surface 5.1 of the abutment 5, which is preferably formed by the above-mentioned groove 16 into two elongated partial surfaces, is concavely curved toward the spring 4.
- the spring 4 at its abutment-side end is designed to bear against the bearing surface 5.1 with a slide 13 that is displaceable relative to the bearing surface 5.1.
- the slide 13, which is preferably designed to be permanently connected to the actuating element 6, is convexly curved on the abutment side to match the bearing surface 5.1.
- a rotation of the abutment 5 about its pivot bearing 15 causes the spring 4 to be compressed.
- a position of the spring 4 adjacent to the rotary bearing 15 of the abutment 5 is designed to effect less compression of the spring 4 than a position of the spring 4 distant from the rotary bearing 15.
- the bearing surface 5.1 is provided with a stop for the spring 4 or the slide 13, as seen in both adjustment directions of the spring 4.
- the abutment 5 has a first toothing 5.2 with preferably at least three teeth on the power transmission device side, that the force transmission device 21 has a second toothing 21.1 with preferably at least four teeth on the abutment side, and that the two teeth -logen 5.2, 21.1 are each convex to each other and are at least partially in engagement with each other.
- the abutment 5 is designed in the shape of an arc, in particular in the form of a circular arc, and 5 the toothing 5.2 on the force transmission device side is arranged on a convex outside and the bearing surface 5.1 for the spring 4 is arranged on a concave inside of the abutment 5.
- the power transmission device 21 is formed from two parts, each with a free space for the actuating element 6, each with a second toothing 21.1.
- a displacement of the connecting element 7 is designed to cause displacement and rotation of the force transmission device 21.
- a displacement and rotation of the power transmission device 21 is designed to cause the abutment 5 to rotate about its pivot bearing 15.
- the actuating element 6, which is preferably designed to be self-contained, is guided around the abutment 5 or encloses it, and preferably also the adjusting wheel 17 to be explained below. 5
- an actuating mechanism is also particularly preferably provided, to which in particular the above-mentioned rotary shaft 22 belongs.
- a spring element 23 is particularly preferably provided for displacing the rotary shaft 22 into a first axial position.
- a first latching element 22.1 is particularly preferably provided on the rotary shaft 30 22, which in the first axial position has a second one provided on the abutment 5 Locking element 5.3 is designed to cooperate.
- the crown gear toothing is in the form of saw tooth toothing, in such a way that movement of the slide 13 on the bearing surface 5.1 in the direction of the pivot bearing 15 is reliably prevented or prevented . becomes. 10
- an actuating rod 24 that is operatively connected to the rotary shaft 22 is preferably provided.
- an actuating mechanism is preferably provided to effect an axial displacement of the rotary shaft 22 into a second axial position.
- the 15 water is preferably formed from a pin 24.1 provided on the actuating rod 24 and from a cam guide 22.2 provided on the rotary shaft 22 and interacting with the pin 24.1.
- the rotary shaft 22 preferably has a through hole 20 penetrated by part of the actuating rod 24.
- the adjusting rod 24 is preferably rotatably but axially immovably mounted on the abutment 5.
- a rotary movement on the actuating rod 24 thus causes the pin 24.1 to move along a wall of the curve guide 22.2.
- This in turn leads to the said axial displacement of the rotary shaft 22 and thus to the fact that the two latching elements 22.1, 5.3 separate from one another, which then has the consequence that the setting wheel 17 rotates ge30 and the slide 13 can thus be adjusted.
- a displacement of the carriage 13 on the abutment 5 becomes increasingly difficult with increasing compression of the spring 4, a locking mechanism preventing rotation of the rotary shaft 22 when the chair is loaded is also particularly preferred.
- This is particularly preferably formed from a 5 non-rotatably but preferably axially displaceably connected to the rotary shaft 22 locking wheel 26 and a spring-loaded and spring-loaded locking element 27 which cooperates with the abutment 5 (if, as in the illustrated embodiment, the blocking element 27 10 is formed wide enough, it can be dispensed with that the ratchet wheel 26 is axially displaceably mounted on the rotary shaft 22). It is further preferably provided that the blocking element 27 cooperates with the chair base 1 when the chair is not under load and releases the ratchet wheel 26 and blocks the ratchet wheel 26 when the chair is loaded. In addition, as can be seen in particular from FIGS. 13 and 14, it is particularly preferably provided that the ratchet wheel 26 has sawtooth teeth, again in such a way that movement of the slide 13 20 on the bearing surface 5.1 in the direction of the pivot bearing 15 is reliably prevented or will.
- the setting wheel 17 is preferably embodied in a fixed manner with the rotary shaft 22, it is further preferably provided that the setting element 6 is slidably mounted at least in the area of the setting wheel 17 parallel to the axis of rotation of the abutment 5.
- guide elements acting on both sides of the actuating wheel 17 and in each case from the outside on the actuating element 6 are preferably elements 28, preferably in the form of screw bolts.
Landscapes
- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Chairs Characterized By Structure (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018115925.0A DE102018115925A1 (de) | 2018-07-02 | 2018-07-02 | Stuhl |
PCT/DE2019/100604 WO2020007411A1 (de) | 2018-07-02 | 2019-06-28 | Stuhl |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3817628A1 true EP3817628A1 (de) | 2021-05-12 |
EP3817628C0 EP3817628C0 (de) | 2023-07-26 |
EP3817628B1 EP3817628B1 (de) | 2023-07-26 |
Family
ID=67441067
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19745041.4A Active EP3817628B1 (de) | 2018-07-02 | 2019-06-28 | Stuhl |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3817628B1 (de) |
CN (1) | CN112384106B (de) |
DE (1) | DE102018115925A1 (de) |
PL (1) | PL3817628T3 (de) |
WO (1) | WO2020007411A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11617444B2 (en) | 2020-03-02 | 2023-04-04 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
US11812870B2 (en) | 2021-02-10 | 2023-11-14 | Steelcase Inc. | Body support structure |
DE102021107681A1 (de) * | 2021-03-26 | 2022-09-29 | Bock 1 Gmbh & Co. Kg | Mechanik |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2627240B2 (ja) * | 1993-02-24 | 1997-07-02 | 池田物産株式会社 | 車両用シート |
DE19810768B4 (de) * | 1998-03-06 | 2009-09-24 | Drabert Gmbh | Bürostuhl |
JP3295651B2 (ja) * | 1998-10-20 | 2002-06-24 | 株式会社イトーキクレビオ | 椅子における部材の軸支構造 |
US6705677B2 (en) * | 2000-02-18 | 2004-03-16 | Sugatsun Kogyo Co., Ltd | Chair with seatback and rotating damper device |
US7014262B2 (en) * | 2002-06-25 | 2006-03-21 | L&P Property Management Company | Support for tilting or synchronized chairs |
DE10357165A1 (de) * | 2003-12-06 | 2005-06-30 | Bock-1 Gmbh & Co. | Synchronmechanik für Bürostühle |
CN1984583A (zh) * | 2004-06-14 | 2007-06-20 | 维特拉专利股份公司 | 带有同步机构的椅子 |
DE202007006762U1 (de) * | 2006-10-13 | 2008-02-14 | Bock 1 Gmbh & Co. Kg | Mechanik für einen Bürostuhl |
DE102007059985B3 (de) | 2007-12-11 | 2009-04-09 | Sedus Stoll Ag | Vorrichtung zur Federkraftverstellung bei einem Bürostuhl |
US11160377B2 (en) * | 2016-10-18 | 2021-11-02 | Vitra Ag | Synchronous chair mechanism and chair having same |
-
2018
- 2018-07-02 DE DE102018115925.0A patent/DE102018115925A1/de active Pending
-
2019
- 2019-06-28 CN CN201980044670.4A patent/CN112384106B/zh active Active
- 2019-06-28 EP EP19745041.4A patent/EP3817628B1/de active Active
- 2019-06-28 PL PL19745041.4T patent/PL3817628T3/pl unknown
- 2019-06-28 WO PCT/DE2019/100604 patent/WO2020007411A1/de unknown
Also Published As
Publication number | Publication date |
---|---|
EP3817628C0 (de) | 2023-07-26 |
CN112384106B (zh) | 2024-05-28 |
EP3817628B1 (de) | 2023-07-26 |
CN112384106A (zh) | 2021-02-19 |
PL3817628T3 (pl) | 2024-02-05 |
DE102018115925A1 (de) | 2020-01-02 |
WO2020007411A1 (de) | 2020-01-09 |
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