EP0068211A2 - Support lombaire pneumatique pour un siège - Google Patents

Support lombaire pneumatique pour un siège Download PDF

Info

Publication number
EP0068211A2
EP0068211A2 EP82105068A EP82105068A EP0068211A2 EP 0068211 A2 EP0068211 A2 EP 0068211A2 EP 82105068 A EP82105068 A EP 82105068A EP 82105068 A EP82105068 A EP 82105068A EP 0068211 A2 EP0068211 A2 EP 0068211A2
Authority
EP
European Patent Office
Prior art keywords
pneumatic
cushion
seat
lumbar support
board
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.)
Withdrawn
Application number
EP82105068A
Other languages
German (de)
English (en)
Other versions
EP0068211A3 (fr
Inventor
Hitoshi Kiyomiya
Shinichi Nishimura
Kenji Ichikawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissan Motor Co Ltd
Ikeda Corp
Original Assignee
Ikeda Bussan Co Ltd
Nissan Motor Co Ltd
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 Ikeda Bussan Co Ltd, Nissan Motor Co Ltd filed Critical Ikeda Bussan Co Ltd
Publication of EP0068211A2 publication Critical patent/EP0068211A2/fr
Publication of EP0068211A3 publication Critical patent/EP0068211A3/fr
Withdrawn legal-status Critical Current

Links

Images

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—Supports for the head or the back
    • A47C7/40—Supports for the head or the back for the back
    • A47C7/46—Supports for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
    • A47C7/467—Supports for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs adjustable by fluid means

Definitions

  • the present invention relates generally to an adjustable lumbar support for a seat, such as a vehicle seat. More specifically, the invention relates to a pneumatically adjustable lumbar support which includes a pneumatic cushion.
  • U.S. Patent 3,770,315 to Smittle et al, issued November 6, 1973 shows a selectively adjustable lumbar support for aircraft seat and the like.
  • Smith et al. discloses an aircraft seat having an adjustable support in the back opposite the seat occupant's lumbar region.
  • the adjustable support comprises an impermeable, flexible bag filled with open-cell, elastically resilient foam, and means for controlling the gas pressure within the flexible bag.
  • Lumbar support is provided by the combined resilience of the foam and air pressure within the bag, and control of the air pressure by the seat occupant enables adjustable control of the degree of support provided the lumbar region of the back.
  • Pressure above ambient is induced by the load of a seat occupant's back against the bag and air is permitted to escape by way of a manually operated valve to select the desired degree of firmness.
  • the bag is provided with excess volume in order to prevent damage to the seat occupant's back due to explosive expansion in case of rapid decompression of an aircraft cabin.
  • the portion of the seat back opposing the lumbar vertebra of a passenger may protrude unnaturally, particularly when the pneumatic bag or cushion is expanded. This may detract from the appearance of the seat. Furthermore, since the passenger's back is supported at about two points, i.e. upper quarter of the back and the lumbar vertebra, the passenger is apt to feel fatigue or discomfort after relative long occupation of the seat.
  • the lumbar support for a seat comprises a pneumatic cushion equipped with a front-facing, flexible board-like member having sufficient rigidity to maintain a moderately curved support surface along the passenger's back and sufficient flexibility to be deformed by expansion and contraction of the pneumatic cushion.
  • the board-like member is positioned on the front side of the pneumatic cushion to oppose the passenger's back.
  • the seat generally comprises a seat back S and a seat cushion 5.
  • the seat back S is connected . to the rear end of the seat cushion 5 by means of brackets 10 and 11.
  • the seat back S is further provided with a head rest 12.
  • a pneumatic cushion 2 is provided in the seat back S at the position opposite the passenger's lumbar vertebra.
  • the pneumatic cushion 2 has a port 2a to be connected to a pneumatic pump (not shown) to adjust the pneumatic pressure in a pneumatic chamber 2b in order to expand and contract the pneumatic cushion.
  • the adjustment arrangement for adjusting the pneumatic pressure in the pneumatic cushion has been illustrated in U.S. Patent 3,326,601 to Vanderbilt et al. issued on June 20, 1967. The disclosure of U.S. Patent 3,326,601 is incorporated by reference.
  • the seat back S generally comprises a seat back frame 13, a seat back support 14, cushion pads 1 and 3, and an outer decorative sheet 4.
  • the seat support 14 is suspended in front of the seat. back frame 13 with a plurality of coil springs 15.
  • the pneumatic cushion 2 is interpositioned between the cushion pads 1 and 3 in the portion of the seat back S opposing the passenger's lumbar vertebra.
  • the pneumatic cushion 2 is attached to a board-like member 6 which is sufficiently rigid to maintain a moderately curved surface conforming to the passenger's lumbar vertebra when the pneumatic cushion is expanded.
  • the board-like member 6 is positioned in front of the pneumatic cushion 2 and is attached to the .back surface of the cushion pad 3.
  • the pneumatic cushion 2 is enclosed in an air-tight bag 2c of a flexible material such as synthetic resin sheet.
  • the port 2a extends from the pneumatic chamber 2b for communication between the pneumatic chamber and the pneumatic pump (not shown).
  • the board-like member 6 is bonded or attached to part of one surface of the pneumatic cushion 2.
  • the board-like member is formed from palm board which is made of fibers of the coconut palm embedded in latex.
  • the board-like member 6 is bonded only to the portion of the pneumatic cushion 2 which experiences the greatest displacement so that the board-like member will not be deformed to match the contours of the entire surface of the pneumatic cushion.
  • the pneumatic cushion 2 is pumped up by the pneumatic pump to deform the portion of the lumbar as illustrated in broken lines in Fig. 2. Since the board-like member 6 is bonded only to a point B in Fig. 2, it is free to retain its original shape even though the pneumatic cushion surface may be more drastically curved. Deformation of the pneumatic cushion 2 causes the board-like member 6 and the cushion 1 to also deform slightly so that the board-like member 6 will form a gently curved surface as shown in broken lines in Fig. 2. The moderately curved surface of the board-like member 6 imparted to the seat back will more .comfortably fit the passenger's back than the pneumatic cushion 2.
  • the board-like member 6 need not always be a palm board, but rather can be made from any material which will form a moderate curve when the pneumatic cushion 2 is pumped up.
  • the board member can be a hard-slab urethane board, chipped urethane board, coarse blanket and so on.
  • the pneumatic cushion can be integrally installed in the cushion pad 1 as shown in Fig. 4.
  • the pneumatic cushion can be made in various different forms, as shown in Figs. 5 and 6 for example.
  • the pneumatic cushion 7 has enlarged portions 7a at either horizontal end and thus a surface curved laterally. This will also cause the board-like member 6 to curve laterally and thereby to conform more closely.to the shape of the passenger's back.
  • the pneumatic chamber in the pneumatic cushion 8 is partitioned into a plurality of chamber sections 8a, 8b, 8c, 8d, 8e and 8f.
  • the sections 8a and 8f are thicker than the other sections.
  • the sections 8c and 8d are thinner than the sections 8b and 8e.

Landscapes

  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Seats For Vehicles (AREA)
EP82105068A 1981-06-12 1982-06-09 Support lombaire pneumatique pour un siège Withdrawn EP0068211A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8552081U JPS57197266U (fr) 1981-06-12 1981-06-12
JP85520/81U 1981-06-12

Publications (2)

Publication Number Publication Date
EP0068211A2 true EP0068211A2 (fr) 1983-01-05
EP0068211A3 EP0068211A3 (fr) 1983-06-22

Family

ID=13861177

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82105068A Withdrawn EP0068211A3 (fr) 1981-06-12 1982-06-09 Support lombaire pneumatique pour un siège

Country Status (2)

Country Link
EP (1) EP0068211A3 (fr)
JP (1) JPS57197266U (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3334864A1 (de) * 1983-09-27 1985-04-11 Werner 7000 Stuttgart Maier Sitz
USD282990S (en) 1983-01-03 1986-03-18 Julian Sims Lumbar support cushion
DE3443935A1 (de) * 1984-12-01 1986-06-05 Rheinische Braunkohlenwerke AG, 5000 Köln Arbeitsstuhl fuer koerperbehinderte
US4690456A (en) * 1984-06-27 1987-09-01 Aisin Seiki Kabushiki Kaisha Air bag assembly
GB2189990A (en) * 1986-02-04 1987-11-11 Paxon John B Resilient support cushion
US4796954A (en) * 1987-02-13 1989-01-10 Tachi-S Ltd. Seat back rear structure
GB2232078A (en) * 1989-04-28 1990-12-05 Okamoto Ind Inc Adjustable vehicle seat
WO1991015979A1 (fr) * 1990-04-23 1991-10-31 Paxon John B Regulateurs de supports corporels pour sieges, coussins et matelas
US5082326A (en) * 1989-04-28 1992-01-21 Okamoto Industries, Inc. Vehicle seat with automatic adjustment mechanisms utilizing inflatable air bags
DE3690372C2 (de) * 1985-07-16 1995-05-18 Okamoto Ind Inc Fahrzeugsitz
GB2344514A (en) * 1998-12-07 2000-06-14 Basf Corp Polyurethane foam seating components
EP1699318A4 (fr) * 2003-12-30 2008-03-05 Hni Tech Inc Dossier de fauteuil a elasticite et capacite de maintien perfectionnees
US20180361897A1 (en) * 2017-06-20 2018-12-20 Ford Global Technologies, Llc Vehicle seat padding assembly with molded-in bladders
CN113602504A (zh) * 2021-09-23 2021-11-05 北京安达维尔航空设备有限公司 一种新型多功能轻量化抗坠毁座椅

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS583851U (ja) * 1981-07-01 1983-01-11 池田物産株式会社 エア袋内蔵シ−ト
JP5809958B2 (ja) * 2011-12-20 2015-11-11 テイ・エス テック株式会社 乗物用シート

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE859032A (nl) * 1977-09-26 1978-01-16 Geerets Peter M Autostoel met aangepaste rugleuning
DE2926552A1 (de) * 1979-06-30 1981-01-22 Daimler Benz Ag Veraenderbare rueckenunterstuetzung fuer eine rueckenlehne eines kraftfahrzeugsitzes
JPS57183807A (en) * 1981-05-02 1982-11-12 Achilles Corp Cushion for automobile seat and method

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD282990S (en) 1983-01-03 1986-03-18 Julian Sims Lumbar support cushion
DE3334864A1 (de) * 1983-09-27 1985-04-11 Werner 7000 Stuttgart Maier Sitz
US4690456A (en) * 1984-06-27 1987-09-01 Aisin Seiki Kabushiki Kaisha Air bag assembly
DE3443935A1 (de) * 1984-12-01 1986-06-05 Rheinische Braunkohlenwerke AG, 5000 Köln Arbeitsstuhl fuer koerperbehinderte
DE3690372C2 (de) * 1985-07-16 1995-05-18 Okamoto Ind Inc Fahrzeugsitz
GB2189990A (en) * 1986-02-04 1987-11-11 Paxon John B Resilient support cushion
GB2189990B (en) * 1986-02-04 1989-11-22 Paxon John B Resilient support cushion
US4796954A (en) * 1987-02-13 1989-01-10 Tachi-S Ltd. Seat back rear structure
GB2232078A (en) * 1989-04-28 1990-12-05 Okamoto Ind Inc Adjustable vehicle seat
US5082326A (en) * 1989-04-28 1992-01-21 Okamoto Industries, Inc. Vehicle seat with automatic adjustment mechanisms utilizing inflatable air bags
GB2232078B (en) * 1989-04-28 1993-06-16 Okamoto Ind Inc Vehicle seat
WO1991015979A1 (fr) * 1990-04-23 1991-10-31 Paxon John B Regulateurs de supports corporels pour sieges, coussins et matelas
GB2344514A (en) * 1998-12-07 2000-06-14 Basf Corp Polyurethane foam seating components
EP1699318A4 (fr) * 2003-12-30 2008-03-05 Hni Tech Inc Dossier de fauteuil a elasticite et capacite de maintien perfectionnees
CN1905822B (zh) * 2003-12-30 2012-02-22 Hni技术公司 具有改进的弹性和支撑的座椅靠背
US8157325B2 (en) 2003-12-30 2012-04-17 Hni Technologies Inc. Chair back rest with improved resilience and support
US20180361897A1 (en) * 2017-06-20 2018-12-20 Ford Global Technologies, Llc Vehicle seat padding assembly with molded-in bladders
CN113602504A (zh) * 2021-09-23 2021-11-05 北京安达维尔航空设备有限公司 一种新型多功能轻量化抗坠毁座椅
CN113602504B (zh) * 2021-09-23 2023-10-27 北京安达维尔航空设备有限公司 一种新型多功能轻量化抗坠毁座椅

Also Published As

Publication number Publication date
EP0068211A3 (fr) 1983-06-22
JPS57197266U (fr) 1982-12-14

Similar Documents

Publication Publication Date Title
EP0068211A2 (fr) Support lombaire pneumatique pour un siège
US4789202A (en) Inflatable seat cushion
US5826937A (en) Pneumatic energy absorbing seat assembly
US5137329A (en) Articulated lumbar support for a seat
US6234578B1 (en) Seating assembly and method of making same
US6851755B2 (en) Padding for seats, in particular vehicle seats
US20060049678A1 (en) Vehicle seat having a massage function and contour adjustment
JPH0698065B2 (ja) 自動車用座席
US4357724A (en) Pneumatic core for adjustable firmness of mattresses, cushions and the like
CA2244955A1 (fr) Siege confort reglable
EP0598071B1 (fr) Dossier de siege a support reglable
US6663177B2 (en) Advanced elastomeric integral suspension seating system
US2343996A (en) Pneumatic cushion
US5975636A (en) Assembly for filling void between cushions of reclining seats
US3110520A (en) Air-cushioned upholstery, particularly for the seat member of motor vehicles or the like
US11712986B2 (en) Seat adjustment device
AU588077B2 (en) Backrest cushion for an air-passenger seat
US20230158930A1 (en) Mesh integrated seat pad assembly
GB2117235A (en) A back support cushion
JPS6239745Y2 (fr)
CA2010366C (fr) Siege gonflable
JPH0528246U (ja) 硬さおよび形状調整式ヘツドレスト
CA2136153A1 (fr) Soutien lombaire pro-actif
JPS6019628Y2 (ja) エア−パツトシ−ト
JPH054748Y2 (fr)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19820609

AK Designated contracting states

Designated state(s): DE FR GB

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): DE FR GB

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: NISSAN MOTOR CO., LTD.

Owner name: IKEDA BUSSAN COMPANY, LTD.

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19851231

RIN1 Information on inventor provided before grant (corrected)

Inventor name: KIYOMIYA, HITOSHI

Inventor name: NISHIMURA, SHINICHI

Inventor name: ICHIKAWA, KENJI