WO2007105960A1 - Device for ajusting the seat for a chair - Google Patents

Device for ajusting the seat for a chair Download PDF

Info

Publication number
WO2007105960A1
WO2007105960A1 PCT/NO2007/000100 NO2007000100W WO2007105960A1 WO 2007105960 A1 WO2007105960 A1 WO 2007105960A1 NO 2007000100 W NO2007000100 W NO 2007000100W WO 2007105960 A1 WO2007105960 A1 WO 2007105960A1
Authority
WO
WIPO (PCT)
Prior art keywords
seat
chair
cushions
seat support
air
Prior art date
Application number
PCT/NO2007/000100
Other languages
French (fr)
Inventor
Jurek Buchacz
Original Assignee
Jurek Buchacz
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jurek Buchacz filed Critical Jurek Buchacz
Priority to EP07747566A priority Critical patent/EP1998647A4/en
Publication of WO2007105960A1 publication Critical patent/WO2007105960A1/en

Links

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
    • A47C7/02—Seat parts
    • A47C7/14—Seat parts of adjustable shape; elastically mounted ; adaptable to a user contour or ergonomic seating positions
    • A47C7/142—Seat parts of adjustable shape; elastically mounted ; adaptable to a user contour or ergonomic seating positions by fluid means

Definitions

  • This invention relates to a device for adjusting the seat of a chair, where the seat is equipped with adjustable connecting supporting elements in the form of fluid- filled adjustment elements.
  • a chair comprising device of this type is known from the Danish patent application DK 0690/89 A.
  • This known chair comprises both seat and the back part with these in-built supporting elements for a chair with for seating person and with the elements supportive function is adjustable.
  • a chair seat with a seat cushion which is adjustable by means of device of this mentioned type is further known from US 6 398 303.
  • This device comprises liquid- filled adjustment elements which mutually influence each other to cause an opposite adjustment movement in the vertical direction in order to obtain a tilting movement of the hip of a person sitting on the seat.
  • the object of the invention is to provide a device by means of which a power neutral adjustment or free adjustment of this seat is obtained of a chair when a person is sitting on a chair changes the seat position.
  • this object is achieved by device of the initially mentioned type characterised by the adjustment elements are provided between a plate formed seat support and comprise at least two cushions located on the opposite surface part of this seat support, the air cushions are connected in pairs by means of a channel equipped with valve for control regulation of the air transfer between the cushions.
  • a preferred embodiment of the device according to this invention is characterised in that the seat part is tiltable about a transversal axes in appearing supported by the seat support and by the air cushions comprising first and second air cushion situated on each side of the transversal axes.
  • Fig. IA- 1C show schematically side views of a chair having a first embodiment of a device according to the invention in three different functional positions
  • Fig. 2 schematically shows a view of the device in fig. 1,
  • Fig. 3 shows a side view of a chair equipped with another embodiment of a device according to this invention.
  • Fig. 4 shows a view of the device in fig. 3.
  • a chair 1 is shown in the form of an office chair or a working chair of conventionally type comprising a chassis 2 with casters with a central hub part 3 and a height adjustable chair column 4 extending from the hub part and supporting a support plate or seat support 5. Further the chair comprises a seat part 6 which can be tilted about a transversal rocking shaft 7 in appearing supported by the seat support 5. The chair comprises also a not shown back part connected to the seat part or the seat support in a conventional way.
  • the chair is equipped with a device according to the invention for adjusting the seat of the seat part 6 for obtaining an adjustment or changing of the seat when a person sitting on the chair changes the position.
  • the device comprise adjustment elements provided between the seat support 5 and the seat part 6 and which in the shown embodiment comprises two cushions 8 and 9 situated on opposite forward and rate sides of the seat support 5 on each side of the transversal shaft 7.
  • the air cushions 8, 9 are connected to each other by means of channel or conduit 10, for example a hose equipped with a valve 11 for controlled regulation of air transfer between the cushions.
  • the cushions can contain any suitable gas instead of air.
  • the air cushions have a longitudinal form and extend between the side borders of the seat support 5 in parallel with the transversal shaft 7.
  • the valve 11 is equipped with an operating device 12 designed in such a way that the valve easily can be opened and closed by persons sitting on the chair.
  • the air cushions 8, 9 are made of a non-elastic material in order to achieve the power neutral with the adjustment.
  • FIG. 3 and 4 schematically show another embodiment of the device according to the invention.
  • the device comprises two sets of air cushions, i.e. a first and another pair of air cushions 15, 16; 17, 18 respectively, where the cushions in the two pairs are located in pairs on the opposite surface part of the seat support 5.
  • one pair 15, 16 of cushions is positioned forward and backward on the seat support while the other pair 17, 18 is positioned at the side borders of the seat support.
  • cushions in each pair are connected by means of a respective hose 19 and 20 each equipped with an adjustment valve 21, 22 respectively.
  • the seat part 6 is here not rotatably or tiltable about a transversal axes, but is connected to the underlying seat support or supporting plate 5 by means of a connection that allows for limited tilting movement of the seat part 6 in relation to the seat support 5.
  • This connection consists of an element 23 connected to or fastened centrally to the seat support and the seat part respectively.
  • the element 23 can for example be made of a ball joint. In other embodiments the element can for example consist of a suitable length of a non-elastic strap, via or rope.
  • the air cushions supported seat part 6 can be tilted forwards or backwards or sideways in any angular position in the same way as a cardanic-supported gyro. This will occur in a power neutral way due to the leveling of the air between the cushions.
  • the desired position will be locked by closing the valves 21 and 22, if desired.
  • each of the valves 21 and 22 are equipped by one operation device 24, 25, respectively, as shown in fig. 4 so that the valves easily can be opened and closed by a person sitting on the chair.

Abstract

A device for adjusting a seat of a chair (1) where the seat is equipped with adjustable, mutually connecting support elements in the form of fluid-filled adjustment elements (8, 9). The adjustment elements are provided between a plate formed seat support (5) and seat part (6) of the chair (1) and comprises at least two air cushions (8, 9) situated on opposite surface part of the seat support (5). The air cushions (8, 9) are mutually connected by means of a channel (10) equipped with a valve (11) for controlled regulation of the air transfer between the cushions (8, 9).

Description

Device for adjusting the seat for a chair
This invention relates to a device for adjusting the seat of a chair, where the seat is equipped with adjustable connecting supporting elements in the form of fluid- filled adjustment elements.
A chair comprising device of this type is known from the Danish patent application DK 0690/89 A. This known chair comprises both seat and the back part with these in-built supporting elements for a chair with for seating person and with the elements supportive function is adjustable.
A chair seat with a seat cushion which is adjustable by means of device of this mentioned type is further known from US 6 398 303. This device comprises liquid- filled adjustment elements which mutually influence each other to cause an opposite adjustment movement in the vertical direction in order to obtain a tilting movement of the hip of a person sitting on the seat.
The object of the invention is to provide a device by means of which a power neutral adjustment or free adjustment of this seat is obtained of a chair when a person is sitting on a chair changes the seat position.
According to the invention this object is achieved by device of the initially mentioned type characterised by the adjustment elements are provided between a plate formed seat support and comprise at least two cushions located on the opposite surface part of this seat support, the air cushions are connected in pairs by means of a channel equipped with valve for control regulation of the air transfer between the cushions.
A preferred embodiment of the device according to this invention is characterised in that the seat part is tiltable about a transversal axes in appearing supported by the seat support and by the air cushions comprising first and second air cushion situated on each side of the transversal axes.
This invention will be described further in connection with two embodiments with reference to the drawings, where
Fig. IA- 1C show schematically side views of a chair having a first embodiment of a device according to the invention in three different functional positions,
Fig. 2 schematically shows a view of the device in fig. 1,
Fig. 3 shows a side view of a chair equipped with another embodiment of a device according to this invention, and
Fig. 4 shows a view of the device in fig. 3.
In the drawings, similar or corresponding parts of the chair have been denoted the same reference symbol. In the side views in fig. IA a chair 1 is shown in the form of an office chair or a working chair of conventionally type comprising a chassis 2 with casters with a central hub part 3 and a height adjustable chair column 4 extending from the hub part and supporting a support plate or seat support 5. Further the chair comprises a seat part 6 which can be tilted about a transversal rocking shaft 7 in appearing supported by the seat support 5. The chair comprises also a not shown back part connected to the seat part or the seat support in a conventional way.
The chair is equipped with a device according to the invention for adjusting the seat of the seat part 6 for obtaining an adjustment or changing of the seat when a person sitting on the chair changes the position. The device comprise adjustment elements provided between the seat support 5 and the seat part 6 and which in the shown embodiment comprises two cushions 8 and 9 situated on opposite forward and rate sides of the seat support 5 on each side of the transversal shaft 7. The air cushions 8, 9 are connected to each other by means of channel or conduit 10, for example a hose equipped with a valve 11 for controlled regulation of air transfer between the cushions.
Even if there in the present description and in the claims are referred to "air cushions", it would be appreciated that the cushions can contain any suitable gas instead of air.
From the basic view in fig. 2, the air cushions have a longitudinal form and extend between the side borders of the seat support 5 in parallel with the transversal shaft 7.
As it further will appear from fig. 2, the valve 11 is equipped with an operating device 12 designed in such a way that the valve easily can be opened and closed by persons sitting on the chair.
When a person sitting on the chair tilts the seat part 6 backwards or forward about the shaft 7 as shown in fig. IB and 1C, air will move from one cushion to the other via the hose 10 and the valve 11 until a balance is achieved. The valve adjusts the flow rate of the air between the cushions. The resulting position of the seat part will be stationary and will be maintained without use of force until the person changes the position and new balance is achieved. Thus a natural seat angle adjustment is achieved according to the body position and particularly according to the thigh bone(s) of the user of the chair. When the valve 11 is closed the seat position will be locked.
The air cushions 8, 9 are made of a non-elastic material in order to achieve the power neutral with the adjustment.
Fig. 3 and 4 schematically show another embodiment of the device according to the invention.
In this embodiment the device comprises two sets of air cushions, i.e. a first and another pair of air cushions 15, 16; 17, 18 respectively, where the cushions in the two pairs are located in pairs on the opposite surface part of the seat support 5. Thus, one pair 15, 16 of cushions is positioned forward and backward on the seat support while the other pair 17, 18 is positioned at the side borders of the seat support. Thus, cushions in each pair are connected by means of a respective hose 19 and 20 each equipped with an adjustment valve 21, 22 respectively.
The seat part 6 is here not rotatably or tiltable about a transversal axes, but is connected to the underlying seat support or supporting plate 5 by means of a connection that allows for limited tilting movement of the seat part 6 in relation to the seat support 5. This connection consists of an element 23 connected to or fastened centrally to the seat support and the seat part respectively. The element 23 can for example be made of a ball joint. In other embodiments the element can for example consist of a suitable length of a non-elastic strap, via or rope.
By means of the connection 23, the air cushions supported seat part 6 can be tilted forwards or backwards or sideways in any angular position in the same way as a cardanic-supported gyro. This will occur in a power neutral way due to the leveling of the air between the cushions. The desired position will be locked by closing the valves 21 and 22, if desired.
In the same way as in the first embodiment, each of the valves 21 and 22 are equipped by one operation device 24, 25, respectively, as shown in fig. 4 so that the valves easily can be opened and closed by a person sitting on the chair.

Claims

P a t e n t c l a i m s
1. Device for adjusting a seat of a chair (1) where the seat face is equipped with adjustable connecting support elements in the form of fluid-filled adjustment elements (8, 9), characterised by the adjusting elements are provided between a plate formed seat support (5) and seat part (6) of the chair (1) and comprises at least air cushions (8, 9) located on opposite surface parts of seat support (5), where the air (8, 9) are connected in pairs by means of a channel (10) comprising a valve (11) for controlled regulation of the transfer between the cushions (8, 9).
2. Device according to claim 1, characterised by the part (6) is adjustable about a transversal axes (7) in a bearing supported by the seat support (5), and that the air cushions (8, 9) comprises a first (8) and a second (9) air cushion situated on each side of the transversal axes (7).
3. Device according to claim 1, characterised by the air cushions comprising a first and a second pair of connecting air cushions (15, 16)(17, 18) respectively, in that the cushions in the two pairs are located in pairs of opposite surface parts of the seat support (5) and the seat part (6) and the seat support (5) are connected by means of a connection (23) which allows a certain tilting movement of the seat part (6) in relation to the seat support (5).
4. Device according to claim 3, characterised by the connection comprising an element (23) connected centrally to the seat part (6) and the seat support (5), respectively.
5. Device according to claim 4, characterised by the element constituting a ball joint.
6. Device according to claim 4, characterised by the element (23) being an un-elastic strap, a wire or a rope.
7. Device according to one of the preceding claims, characterised by the valve (11) or each of the valves (21, 22) are equipped with a operating device (12 or 24, respectively 25), so that the valve(s) (11 or 21, 22) easily can be opened and closed by a person sitting on the chair (1).
PCT/NO2007/000100 2006-03-15 2007-03-14 Device for ajusting the seat for a chair WO2007105960A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07747566A EP1998647A4 (en) 2006-03-15 2007-03-14 Device for ajusting the seat for a chair

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20061210 2006-03-15
NO20061210A NO327507B1 (en) 2006-03-15 2006-03-15 Device for adjusting the seat surface of a chair

Publications (1)

Publication Number Publication Date
WO2007105960A1 true WO2007105960A1 (en) 2007-09-20

Family

ID=38509716

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2007/000100 WO2007105960A1 (en) 2006-03-15 2007-03-14 Device for ajusting the seat for a chair

Country Status (3)

Country Link
EP (1) EP1998647A4 (en)
NO (1) NO327507B1 (en)
WO (1) WO2007105960A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100890485B1 (en) 2008-07-23 2009-03-26 엄옥순 Air generator of chair
DE102008064466A1 (en) * 2008-12-22 2010-07-01 GM Global Technology Operations, Inc., Detroit Seat for motor vehicle, has bottom support tiltable relative to underbody and/or back support and base, where back support is tiltable relative to base, and bottom support and/or back support include defined swiveling points
EP2387913A1 (en) * 2010-05-21 2011-11-23 Karl-Heinz Brändle Device for improving human sitting posture
TWI419666B (en) * 2011-06-29 2013-12-21 Univ Ishou Cooling chair
EP2764798A1 (en) * 2013-02-12 2014-08-13 Kinnarps Ab Chair
WO2016067219A1 (en) 2014-10-28 2016-05-06 Iii Solutions Gmbh Office, work and leisure chair and retrofit kit for a chair or a seat surface for causing subliminal movements of the person sitting thereon

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2026315A (en) * 1978-07-26 1980-02-06 Dyson R Cushions and mattresses
DE3513985A1 (en) * 1985-04-18 1986-10-30 Margarete Dr.med. 7928 Giengen Kahle Chair
WO1990009126A1 (en) * 1989-02-15 1990-08-23 Labofa A/S A chair with a back support
US5577803A (en) * 1992-11-04 1996-11-26 Tritube Adjustable seat
EP0772988A1 (en) * 1995-11-09 1997-05-14 Asko Päärni Chair
US6370716B1 (en) * 1999-04-20 2002-04-16 John W. Wilkinson Inflatable cushioning device with tilting apparatus
US6398303B1 (en) * 1997-06-21 2002-06-04 Bayerische Motoren Werke Aktiengesellschaft Seat

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2026315A (en) * 1978-07-26 1980-02-06 Dyson R Cushions and mattresses
DE3513985A1 (en) * 1985-04-18 1986-10-30 Margarete Dr.med. 7928 Giengen Kahle Chair
WO1990009126A1 (en) * 1989-02-15 1990-08-23 Labofa A/S A chair with a back support
US5577803A (en) * 1992-11-04 1996-11-26 Tritube Adjustable seat
EP0772988A1 (en) * 1995-11-09 1997-05-14 Asko Päärni Chair
US6398303B1 (en) * 1997-06-21 2002-06-04 Bayerische Motoren Werke Aktiengesellschaft Seat
US6370716B1 (en) * 1999-04-20 2002-04-16 John W. Wilkinson Inflatable cushioning device with tilting apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1998647A4 *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100890485B1 (en) 2008-07-23 2009-03-26 엄옥순 Air generator of chair
DE102008064466A1 (en) * 2008-12-22 2010-07-01 GM Global Technology Operations, Inc., Detroit Seat for motor vehicle, has bottom support tiltable relative to underbody and/or back support and base, where back support is tiltable relative to base, and bottom support and/or back support include defined swiveling points
EP2387913A1 (en) * 2010-05-21 2011-11-23 Karl-Heinz Brändle Device for improving human sitting posture
TWI419666B (en) * 2011-06-29 2013-12-21 Univ Ishou Cooling chair
EP2764798A1 (en) * 2013-02-12 2014-08-13 Kinnarps Ab Chair
WO2016067219A1 (en) 2014-10-28 2016-05-06 Iii Solutions Gmbh Office, work and leisure chair and retrofit kit for a chair or a seat surface for causing subliminal movements of the person sitting thereon
WO2016067217A1 (en) 2014-10-28 2016-05-06 Iii Solutions Gmbh Office, work and leisure chair and retrofit kit for a chair or a seat surface for causing subliminal movements of the person sitting thereon
CN107205554A (en) * 2014-10-28 2017-09-26 Iii方案有限责任公司 Office, work and leisure chaise longue and for seat or seat surface to cause the people being sitting in thereon to produce the repacking external member that subconsciousness is moved
US10213024B2 (en) 2014-10-28 2019-02-26 Iii Solutions Gmbh Office, work and leisure chair and retrofit kit for a chair or a seat surface for causing subliminal movements of the person sitting thereon
US10219628B2 (en) 2014-10-28 2019-03-05 Iii Solutions Gmbh Office, work and leisure chair and retrofit kit for a chair or a seat surface for causing subliminal movements of the person sitting thereon

Also Published As

Publication number Publication date
NO327507B1 (en) 2009-07-27
NO20061210L (en) 2007-09-17
EP1998647A1 (en) 2008-12-10
EP1998647A4 (en) 2012-10-24

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