EP4017320A1 - Stuhl - Google Patents
StuhlInfo
- Publication number
- EP4017320A1 EP4017320A1 EP20764311.5A EP20764311A EP4017320A1 EP 4017320 A1 EP4017320 A1 EP 4017320A1 EP 20764311 A EP20764311 A EP 20764311A EP 4017320 A1 EP4017320 A1 EP 4017320A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- backrest
- support
- chair according
- chair
- backrest support
- 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
- 239000004033 plastic Substances 0.000 claims description 5
- 239000002991 molded plastic Substances 0.000 claims 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001447 compensatory effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 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
- 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
- A47C7/443—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with coil springs
- A47C7/444—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with coil springs of torsion type
-
- 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
- A47C7/38—Support for the head or the back for the head
-
- 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
- A47C7/402—Support for the head or the back for the back adjustable in height
Definitions
- the invention relates to a chair, in particular an office chair, comprising a base frame, a base support arranged on the base frame, a seat element arranged on the base support and a seat back, the seat back having a back support arranged on the base support and a backrest arranged on the backrest support.
- DE 202008 006 179 U1 shows a chair designed as an office chair, comprising a pedestal with a roll cross and a foot column, a base support arranged on the base support, a seat element arranged on the base support with a seat surface and a seat back
- Seat back has a backrest support arranged on the base support and a backrest arranged on the backrest support.
- the backrest support also has a swivel arm so that the backrest can be moved relative to the base support or the seat element, the backrest performing a compensatory movement along a curved path in the direction of the base support or the seat element when pressure is exerted on an upper backrest area of the backrest executes.
- a disadvantage of the chairs known from the prior art is that a backrest of a seat back of such a chair does not follow a lateral movement to the left or right of a back of a user of the chair or cannot adapt to the lateral movement in such a way that the Backrest after the lateral movement of the back, if the back has been moved from a middle position to a lateral position, still comes to rest against the back.
- the present invention is therefore based on the object of proposing a chair which takes the above-mentioned disadvantage into account.
- the chair according to the invention in particular an office chair, comprises a base frame, a base support arranged on the base frame, a seat element arranged on the base support and a seat back, the seat back having a backrest support arranged on the base support and a backrest arranged on the backrest support, the backrest support having a Forms spring device so that the backrest can be moved laterally from a central position into a lateral position counter to a restoring force caused by the spring device.
- the backrest support has a spring device such that the backrest can be moved laterally from a central position into a lateral position against a restoring force brought about by the spring device.
- the backrest can follow a lateral movement of a user's back or adapt to the lateral movement in such a way that the backrest is still on the back even after the lateral movement, when the back has been moved from a middle position to a lateral position Plant is coming. If the back is then moved back from the lateral position into the central position, the restoring force of the spring device ensures that the backrest returns from the lateral position to the central position. This ensures comfortable sitting, especially over a longer period of time.
- a lateral movement of the back is to be understood here in particular as a movement of the back to the left or right, from the perspective of the user.
- the spring device can be designed as a torsion bar spring, the torsion bar spring being formed by a lower section of the backrest support that extends in a longitudinal direction of the chair, with an axis of rotation running in the longitudinal direction so that an upper section of the backrest support is movable about the axis of rotation.
- the fact that the torsion bar spring is formed by the backrest support or the lower section is the Formation of the seat back or the backrest support is particularly easy. The assembly effort or effort involved in setting up or assembling the chair can also be reduced as a result.
- the lower section can advantageously have a C-shaped or U-shaped profile. As a result, torsional stresses or the restoring force counteracting a torsional moment generated by the user are so low that easy mobility or rotatability of the upper section about the axis of rotation can be ensured.
- the lower section can have a hollow profile.
- the lower section can be designed as a thin-walled round tube.
- an underside of the lower section can have a preferably tooth-shaped or wave-shaped gap, which enables the upper section to move, with a width of the gap limiting the movement in the manner of a stop.
- Stop-like means that sections of the underside adjoining the gap come closer and closer during the lateral movement and contact one another in a certain lateral position depending on the width and thus limit the lateral movement or an angle of rotation relative to the middle position. Thus, these sections form a stop for the lateral movement.
- the width can expediently be less than 5 mm.
- the width is preferably 1.5 mm.
- the backrest support can be made in one piece from plastic.
- the backrest support can be manufactured inexpensively.
- the backrest support can then preferably be produced by means of an injection molding process.
- the backrest support can be designed essentially L-shaped.
- the backrest support can have an upper section and a lower section, the lower section being arranged on the base carrier and the backrest being arranged on the upper section.
- the upper Section have a hump-like course.
- the backrest support can be screwed to the base support.
- the backrest support can have several passages on an underside into which screws can be inserted or inserted.
- the backrest can preferably be height-adjustable on the backrest support by means of a height-adjusting device for the seat back. A height of the backrest can thereby be adapted to a user's back, so that even more comfortable sitting is made possible.
- the backrest can be arranged on the backrest carrier by means of a connecting element of the height adjustment device at a plurality of positions of the height adjustment device arranged at least partially along an upper section of the backrest carrier.
- the connecting element can be a tabular or wedge-shaped object formed from a plastic, which can be inserted into the positions formed as openings or slots.
- a set screw for locking the backrest can be provided as a connecting element.
- the backrest support can have a cross strut with a front and a back, whereby by actuating an actuating element located on the back of the height adjustment device, which is via a spring device of the height adjustment device with a cover arranged on the front the tension element of the height adjustment device located on the cross strut engages, the connecting element can be pulled out of an instantaneous position so that the backrest can be displaced along a linear guide of the height adjustment device arranged on the upper section on which the positions are arranged. The backrest can then be moved to a desired height.
- the chair can have a headrest which is arranged on the backrest and which comprises an articulated arm in such a way that the headrest is designed to be movable.
- the headrest can have a securing device with a lever element, whereby a clamping can be released by actuating the lever element so that the Headrest can be moved.
- Fig. 1 is a side view of a chair; 2 shows a perspective view of a backrest support; 3 shows a partial view of the backrest support; 4 shows a perspective sectional view of the backrest support; 5 is a perspective view of a seat back; 6 is a partial perspective view of the seat back; 7 is a partial perspective view of the seat back; 8 is a perspective view of a headrest; 9 shows a perspective view of a backrest support in a further embodiment; and
- FIG. 10 shows a perspective view of a base support together with the backrest support which is arranged on the base support and shown in FIG. 8.
- Fig. 1 shows a chair 10, which comprises a pedestal 11 with a foot column 12 and a caster 13, a base support 14 arranged on the foot column 12, a seat element 15 arranged on the base support 14 and a seat back 16, the Seat back 16 has a backrest support 17 arranged on the base support 14 and a backrest 18 arranged on the backrest support 17.
- the roller cross 13 has rollers 19, and the height of the seat element 15 in relation to the roller cross 13 is adjustable.
- the chair 10 further comprises armrests 20 arranged on the base support 14.
- the backrest support 17 is essentially L-shaped except for a hump-like profile and has a lower section 21 and an upper section 22, the backrest support 17 over the lower section 21 is screwed to the base support 14 and is designed as a plastic molded part.
- the spring device 23 is designed as a torsion bar spring 24, the torsion bar spring 24 being formed by the lower section 21 extending in a longitudinal direction of the chair 10, with an axis of rotation 25 running in the longitudinal direction, so that the upper section 22 is movable about the axis of rotation 25 is.
- the lower section 21 has a hollow profile 26, an underside 27 of the lower section 21 having a wave-shaped gap 28 which enables the upper section 22 to move, with a width of the gap 28 the movement is limited by a stop. Furthermore, the underside 27 has passages 29 provided for the introduction of screws (not shown here).
- FIGS. 5 to 7 An overview of FIGS. 5 to 7 shows the seat back 16, the backrest 18 being height-adjustable on the backrest support 17 by means of a height adjustment device 30 of the seat back 16.
- the backrest 18 is arranged on the backrest support 17 by means of a connecting element 31 of the height adjustment device 30 at a plurality of positions 32 of the height adjustment device 30, some of which are arranged as slots along the upper section 22, the backrest support 17 having a cross strut 33 with a front side 34 and a Has rear side 35, whereby by actuation of an actuating element 36 located on the rear side 35 of the height adjustment device 30, which is arranged via a spring device (not shown here) of the height adjustment device 30 with a below one on the front side 34 Cover 37 of the cross strut 33 located tension element 52 of the height adjustment device 30 is engaged, the connecting element 31 can be pulled out of an instantaneous position 38, so that the backrest 18 along a dovetail-like linear guide 39 of the height adjustment device 30 arranged on
- the connecting element 31 can be pulled out of the current position 38 in the direction of an arrow 53.
- the connecting element 31 can then be brought into a position connected to the height by actuating or releasing the actuating element 36 again, the connecting element 31 being able to be pushed into this position or into this slot in the direction of arrow 53 by means of the spring device.
- the cover 37 has an opening 51 through which the connecting element 31 can push through when the connecting element 31 is pulled out of the current position 38.
- FIG. 8 shows a headrest 40 of the chair 10 which is arranged on the backrest 18 and which comprises an articulated arm 41 such that the headrest 40 is designed to be movable.
- the headrest 40 has a securing device 42 with a lever element 43, with clamping by actuation of the lever element 43 can be released so that the headrest 40 can be moved.
- a backrest support 44 in a further embodiment.
- a lower section 45 of the backrest support 44 has a C-shaped profile 46.
- the backrest support 44 is arranged on a base support 47.
- the lower section 45 forms a torsion bar spring 48 such that the backrest support 44 or an upper section 49 of the backrest support 44 can be moved laterally from a central position into a lateral position in the direction of an arrow 50.
Landscapes
- Chairs Characterized By Structure (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019122164.1A DE102019122164A1 (de) | 2019-08-19 | 2019-08-19 | Stuhl |
PCT/EP2020/073101 WO2021032741A1 (de) | 2019-08-19 | 2020-08-18 | Stuhl |
Publications (2)
Publication Number | Publication Date |
---|---|
EP4017320A1 true EP4017320A1 (de) | 2022-06-29 |
EP4017320B1 EP4017320B1 (de) | 2024-06-05 |
Family
ID=72290993
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20764311.5A Active EP4017320B1 (de) | 2019-08-19 | 2020-08-18 | Stuhl |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP4017320B1 (de) |
CA (1) | CA3151862A1 (de) |
DE (1) | DE102019122164A1 (de) |
WO (1) | WO2021032741A1 (de) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4043592A (en) * | 1975-09-05 | 1977-08-23 | Steelcase Inc. | Adjustable seat back mechanism |
DE202008006179U1 (de) | 2008-05-06 | 2008-07-17 | Design Ballendat Gmbh | Stuhl mit schwenkbarer Rückenlehne |
DE202009017387U1 (de) * | 2009-12-22 | 2010-04-01 | Rolf Benz Ag & Co. Kg | Sitz-Liege-Sessel mit Doppelrahmen |
DE102011001811A1 (de) * | 2011-04-05 | 2012-10-11 | Wilkhahn Wilkening + Hahne Gmbh + Co. Kg | Stuhl |
WO2014198255A1 (de) * | 2013-06-12 | 2014-12-18 | Stefan Brodbeck | Stuhl |
EP3576573B1 (de) * | 2017-02-03 | 2021-04-07 | Zhejiang Sunon Furniture Manufacture Co., Ltd. | Stuhl |
-
2019
- 2019-08-19 DE DE102019122164.1A patent/DE102019122164A1/de active Pending
-
2020
- 2020-08-18 CA CA3151862A patent/CA3151862A1/en active Pending
- 2020-08-18 EP EP20764311.5A patent/EP4017320B1/de active Active
- 2020-08-18 WO PCT/EP2020/073101 patent/WO2021032741A1/de unknown
Also Published As
Publication number | Publication date |
---|---|
WO2021032741A1 (de) | 2021-02-25 |
EP4017320B1 (de) | 2024-06-05 |
CA3151862A1 (en) | 2021-02-25 |
DE102019122164A1 (de) | 2021-02-25 |
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