US20100301651A1 - Memory apparatus for the back of a chair - Google Patents

Memory apparatus for the back of a chair Download PDF

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Publication number
US20100301651A1
US20100301651A1 US12/671,185 US67118508A US2010301651A1 US 20100301651 A1 US20100301651 A1 US 20100301651A1 US 67118508 A US67118508 A US 67118508A US 2010301651 A1 US2010301651 A1 US 2010301651A1
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US
United States
Prior art keywords
support
setting
block
chair
backrest
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.)
Abandoned
Application number
US12/671,185
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English (en)
Inventor
Kyoung Ho Yoon
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Assigned to CHANG, SUNG HO, YOON, KYOUNG HO reassignment CHANG, SUNG HO ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: YOON, KYOUNG HO
Publication of US20100301651A1 publication Critical patent/US20100301651A1/en
Abandoned legal-status Critical Current

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    • 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
    • A47C7/46—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile 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
    • A47C7/36—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A47C7/405—Support for the head or the back for the back with double backrests
    • 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
    • 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
    • A47C7/46—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
    • A47C7/462—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs adjustable by mechanical means

Definitions

  • the present invention relates to a memory device installed in a backrest of a chair, and more particularly to a memory device including a plurality of support blocks installed in a backrest supporting an upper body of a user when the user seating on a chair leans against the backrest, in which an arranged state of the respective support blocks is changed and set in accordance with the pressure applied from the upper body of the user, so that the shape of the backrest is set to be suitable for a body posture and habit of the user leaning against the backrest, and the set shape is maintained to minimize fatigue, although the user uses the chair for a long time.
  • a chair In general, a chair is a means for comfortably supporting a human body when workers or students perform various operations in offices or schools.
  • the chair is manufactured by laying emphasis on a backrest function so as to be suitable for rest or operation.
  • the chair has a simple structure consisting of a backrest, a seat plate and legs which are integrally formed, the chair does not properly cope with the flexure of the human body.
  • a seat is hard on user's back.
  • An upper body (spinal structure) of a user mainly includes, as shown in FIG. 1 , lumbar vertebrae, thoracic vertebrae and cervical vertebrae which are successively connected to the pelvis.
  • the backbone consists of 26 bones, i.e., 7 cervical vertebrae, 12 thoracic vertebrae, 5 lumbar vertebrae, and a mean physiognomy.
  • a spinal length of an adult is about 71 to 75 cm, and fibrillar cartilage called as an intervertebral disc is interposed between bones to protect the bones.
  • the backbone is bent in an S shape when viewing at its side, which is referred to as flexure.
  • An adult has four flexures, in which the flexure of a neck is inherent, and the flexure of a waist is formed at toddling time after birth.
  • a seating posture is more important than a standing posture, since peoples spend a large part of their time on a chair.
  • the standing posture is controlled by an intension, while the seating posture is depending upon artificial elements rather than the intension. Therefore, selection of a comfort chair is needed.
  • a height, depth and slope of a seat plate and a slope and bent portion of a backrest are important.
  • the height of the seat plate is identical to a length of a lower leg, and is desirable to maintain a femoral region horizontally or slightly increase a height of a knee. If the seat plate is too high, an extensor of a waist acts to likely induce fatigue. If the depth of the seat plate is longer than a length of the femoral region, a rear side of the knee is compressed, and if a user seats on the seat plate for a long time, it may induce interruption in blood circulation.
  • a chair for office is 3 to 5 degrees, and a chair for rest is 15 degrees.
  • a chair for office is 110 to 110 degrees, while a chair for rest is 115 to 130 degrees.
  • the bent portion of the backrest should be smooth in comparison with a bent portion of a lumbar region when standing. The reason is that if the bent portion is acute, stress may be applied to discs to induce fatigue on the waist.
  • a cushion is built in the backrest to provide a user with the comfort, or a chair having a backrest which is bent similar to the upper body is utilized.
  • An object of the present invention is to provide a memory device installed in a backrest of a chair, in which a shape of the backrest is set to be suitable for a body posture and habit of a user leaning against the backrest, and the set shape is maintained to provide the user with comfort, although the user uses the chair for a long time.
  • a memory device installed in a backrest of a chair including a plurality of support shafts, a plurality of housings receiving the plurality of support shafts, a support block inserted in the respective housings and having a plurality of fixing grooves formed on both sides thereof, a spring for resilient supporting the support block, a setting block having one end rotatably receiving the support shaft, in a state where the setting block is inserted in both sides of the housing, and the other end with a fixing boss inserted in the fixing groove, a setting spring for resiliently supporting the setting block, a rotary lever connected to the setting block via a wire, a support plate connected to the rotary lever by a hinge, and having a setting groove and a release groove formed on an surface thereof, an operation lever resiliently installed on the rotary lever by a support spring, and a setting pin integrally formed with the operation lever and selectively inserted in the setting groove or the release groove.
  • the memory device further includes a housing having a receiving hole which is stacked on an upper portion of the support shaft, with a portion of a lower part of the backrest of the chair being stacked with the support blocks.
  • the housing is installed at a portion corresponding to cervical vertebra, and has a plurality of pocket grooves, a support pocket is inserted in the respective pocket grooves, and a guide shaft protrudes from the respective pocket grooves.
  • the memory device installed in the backrest of the chair according to the present invention including the plurality of support blocks which are densely stacked in a vertical direction of the backrest so as to be deformed within a predetermined range has effects of setting a deformed level of the support blocks to correspond to the spinal shape and habit of the use which leans against the backrest, and providing the user with the comfort to minimize the fatigue, although the user uses the chair for a long time.
  • FIG. 1 is a photograph showing the spinal structure of an upper body of a human
  • FIG. 2 is an exploded perspective view illustrating a memory device installed in a backrest of a chair according to an embodiment of the present invention
  • FIG. 3 is a view illustrating a memory device engaged to the backrest of a chair and an operation part of the memory device
  • FIG. 4 is a cross-sectional view illustrating a memory device engaged to a backrest of a chair
  • FIG. 5 is a plan view illustrating the operation of a memory device
  • FIG. 6 is a cross-sectional view illustrating an example of a back contacting part which is deformed in a wave shape by the pressure applied to a memory device;
  • FIGS. 7 and 8 are front views illustrating memory devices according to another embodiment of the present invention.
  • FIG. 9 is a perspective view illustrating a memory device installed in a backrest of a chair according to another embodiment of the present invention.
  • FIG. 10 is a front view illustrating an application of the memory device in FIG. 9 .
  • FIG. 2 is an exploded perspective view illustrating a memory device installed in a backrest of a chair according to an embodiment of the present invention.
  • the memory device of the present invention includes a plurality of support shafts 300 , horizontally positioned in an inside of the backrest of the chair, for supporting housings which are movably engaged with a support block 120 that will be described hereinafter.
  • the plurality of housings 110 are constantly stacked by the support shafts 300 , and are provided with insertion holes 111 for receiving the support shafts 300 .
  • the supports shafts 300 are inserted in the insertion holes 111 when the plurality of housings 110 is stacked on each other.
  • An interval maintaining member 310 is interposed between the housings 110 in order to adjust an interval between the stacked housings 110 .
  • the respective housings 110 has a receiving groove 112 of a certain size formed on the front surface thereof, and the support block 120 is inserted in the receiving groove in such a way that the support block 120 is movable in front and rear directions of the backrest of the chair within a predetermined range.
  • a pair of guides 114 are formed in the inside of the receiving groove 112 of the housing 110 , and a guide groove 121 is formed in the support block 120 to receive the guide 114 .
  • a spring groove 121 a is formed on one side of the guide groove 121 to receive a spring 122 for urging the support block 120 in a front direction.
  • a stopper 125 protrudes from the upper surface of the support block 120 to restrict a moving amount of the support block 120 .
  • a plurality of fixing grooves 126 are formed on both sides of the support block, and an arc portion 124 is formed on the front surface of the support block 120 .
  • An extension 123 may be extended from both sides of the front surface of the support block 120 .
  • a setting block 320 is respectively installed on both inner sides of the housing 110 , and a rotational member 322 which is rotatably inserted in the support shaft 300 is provided on the setting block 320 .
  • a fixing boss 321 is respectively formed on both opposite surfaces of the setting blocks 320 , and is inserted in any one of the fixing grooves 126 to stop the support block 120 , in which a movable range of the support block 120 is set in the housing 110 .
  • a setting spring 324 is installed between the rotational members 322 to apply stencil force to the rotational members 322 , so that both setting blocks 320 are moved inwardly on the basis of the support shafts 300 .
  • FIG. 3 is a view illustrating the memory device engaged to the backrest of the chair in a cross section and an operation part of the memory device in a plan.
  • FIG. 4 is a cross-sectional view illustrating the memory device engaged to the backrest of the chair.
  • the ouster surface of the respective setting blocks 320 is connected to a rotary lever 340 via a wire 330 , with the connected portion being installed at a certain position of the chair on a support plate 370 by a hinge 373 .
  • a setting groove 372 and a release groove 371 are formed on one surface of the support plate to control operation of the rotary lever 340 .
  • the support plate 370 may be installed on any portion if it is not inconvenient when a bottom surface of a seat board of the chair or the chair is used.
  • the rotary lever 40 is provided with an operation lever 350 which is applied with a resilient force from a support spring 351 .
  • a setting pin 360 is integrally formed with the operation lever 350 , and is selectively inserted in the setting groove 372 or the release groove 371 .
  • the support block 120 can be installed on the inner surface of a backrest cover 180 forming the surface of the backrest of the chair, it is preferable in that a cushion 190 is interposed between the backrest cover 180 and the support block 120 .
  • a heater 200 may be installed on the inner surface of the backrest cover 180 .
  • FIG. 5 is a plan view illustrating the operation of the memory device installed in the backrest of the chair according to the present invention
  • FIG. 6 is a cross-sectional view illustrating an example of the back contacting part which is deformed in a wave shape by the pressure applied to the memory device.
  • FIGS. 7 and 8 are front views illustrating memory devices according to another embodiment of the present invention.
  • the respective support blocks 320 is rotated outwardly in order to separate the fixing boss 321 formed on the setting block 320 from the fixing groove 126 , as shown in FIG. 5 .
  • the setting pin 360 is moved by the restoring force of the support spring 351 , and the setting pin 360 is inserted into the release groove 371 , so that the wire 330 is maintained in a state of tension.
  • the support block 120 is stably moved by the guide 114 which is inserted in the guide groove 121 .
  • the stopper 125 formed on the upper surface of the support block 120 comes in contact with the inner surface of the housing 110 , the support block is not moved, so that the moving range of the support block is determined.
  • the plurality of support blocks 120 stacked along a vertical direction of the backrest at dense intervals are moved by the force applied from the upper body of the user.
  • the plurality of support blocks 120 are deformed to correspond to the spinal shape and habit of the user, as shown in FIG. 6 .
  • the plurality of support blocks 120 serve as a cushion of supporting the upper body of the user.
  • the positions of the support blocks 120 are fixed.
  • the fixing boss 321 formed on the setting block 320 is engaged to the fixing groove 126 formed on the support block 120 .
  • the setting block 320 is rotated inwardly, and the fixing boss 321 formed on the other end of the setting block 320 is engaged to the fixing groove 126 to prevent movement of the support blocks 120 .
  • the flexure of the backrest is adjusted in accordance with the body posture of the user. Even though the user seats on the chair for a long time, the user can feel the comfort, and thus minimize the fatigue.
  • the user can selectively operate the heater 200 to use it as an auxiliary medical instrument, as well as a thermostat.
  • the comfort is increased by the arc portion 124 formed on the surface of the respective support blocks 120 and the cushion 190 .
  • the support blocks 120 may be installed at regular intervals, as shown in FIG. 7 , with the support blocks being separated, or the support blocks corresponding to lumbar vertebra may be contiguously installed, while the support blocks corresponding to thoracic vertebra and cervical vertebra may be separated from each other, as shown in FIG. 8 . In this instance, it can be adjusted by using the size of the interval maintaining member 310 .
  • FIG. 9 is a perspective view illustrating a memory device installed in a backrest of a chair according to another embodiment of the present invention
  • FIG. 10 is a front view illustrating an application of the memory device in FIG. 9
  • Another housing 510 having a receiving hole 511 is stacked on the upper portion of a support shaft 300 , with a portion of a lower part of the backrest of the chair being stacked with support blocks.
  • the housings 510 are installed at a portion corresponding to the cervical vertebra.
  • the each housing 510 has a plurality of pocket grooves 512 which are arranged in series, in which support pockets 400 are inserted in the pocket grooves 512 .
  • the support pockets 400 are inserted in the pocket grooves 512 in such a way that the support pocket 400 is movable in front and rear directions.
  • a stop pin 402 is formed on the upper surface of the support pocket 400 .
  • a guide shaft 513 is formed in an inside of each pocket groove 512 , and a guide groove 402 for receiving the guide shaft 513 is formed on the support pocket 400 .
  • a pocket spring 422 is built in the guide groove 400 to urge the support pocket 400 forwardly.
  • the support pockets 400 are deformed within a determined range by the force applied from the exterior.
  • the thoracic vertebra and the lumbar vertebra of the user deform the support blocks 120 to selectively set the support blocks in accordance with the body posture of the user.
  • the support pockets 400 installed on the portion corresponding to the cervical vertebra are deformed in accordance with the body posture of the user, and then are returned to its original position when the force is removed, thereby providing the user with the comfort.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
US12/671,185 2007-07-31 2008-07-30 Memory apparatus for the back of a chair Abandoned US20100301651A1 (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
KR10-2007-0076937 2007-07-31
KR1020070076937A KR100916753B1 (ko) 2007-07-31 2007-07-31 의자 등받이용 메모리 장치
KR10-2008-0073332 2008-07-28
KR1020080073331A KR101094604B1 (ko) 2007-07-31 2008-07-28 의자 등받이용 쿠션 장치
KR10-2008-0073331 2008-07-28
KR1020080073332A KR20100012127A (ko) 2007-07-31 2008-07-28 의자 등받이용 메모리 장치
PCT/KR2008/004426 WO2009017357A1 (en) 2007-07-31 2008-07-30 Memory apparatus for the back of a chair

Publications (1)

Publication Number Publication Date
US20100301651A1 true US20100301651A1 (en) 2010-12-02

Family

ID=40304527

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/671,185 Abandoned US20100301651A1 (en) 2007-07-31 2008-07-30 Memory apparatus for the back of a chair

Country Status (6)

Country Link
US (1) US20100301651A1 (ko)
EP (1) EP2178418A1 (ko)
JP (1) JP2010535061A (ko)
KR (3) KR100916753B1 (ko)
CN (1) CN101784214B (ko)
WO (1) WO2009017357A1 (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2610417C2 (ru) * 2015-04-27 2017-02-10 Борис Владимирович Романов Кресло со спинкой, состоящей из подвижных механических сегментов, поддерживающих спину, шею и голову пользователя

Families Citing this family (6)

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Publication number Priority date Publication date Assignee Title
IES20090147A2 (en) * 2009-02-24 2011-02-16 Colm Campbell A chair
IT1395424B1 (it) * 2009-08-31 2012-09-14 Galante Struttura di supporto e contenimento per persone
KR101418865B1 (ko) * 2013-06-03 2014-07-17 주식회사 포트론 스쿨존 cctv 감시장치 성능개선 시스템
CN107495708A (zh) * 2017-10-23 2017-12-22 华北理工大学 适应人体的座椅
CN107495707A (zh) * 2017-10-23 2017-12-22 华北理工大学 人体仿生座椅
KR102354056B1 (ko) 2021-04-26 2022-01-24 (주)이지템 스마트 쿠션 장치 및 그 장치의 구동방법

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US3990742A (en) * 1975-07-03 1976-11-09 Glass Katalina T Adjustable spinal contour seating
US4437702A (en) * 1981-04-06 1984-03-20 Agosta A Richard Adjustable patient corrective support apparatus
US4944554A (en) * 1987-10-02 1990-07-31 Gross Clifford M Active biomechanical chair
US4993164A (en) * 1987-05-13 1991-02-19 Jacobsen Joseph M Measuring device
US5328245A (en) * 1992-10-30 1994-07-12 Thomas J. Marks Chair having adjustable back support
JPH06327539A (ja) * 1993-05-27 1994-11-29 Mazda Motor Corp 車両のシート装置
US5558398A (en) * 1993-11-08 1996-09-24 Santos; James P. Self-adjusting seating system
US6676215B1 (en) * 2001-04-09 2004-01-13 The Research Foundation Of State University Of New York Pressure-relieving wheelchair seating apparatus
US20040100139A1 (en) * 2001-03-14 2004-05-27 Williams David Nicholas Lewis Seat backs
US20040104610A1 (en) * 2002-12-02 2004-06-03 Jan Jaskot Lumbar support device
US20060238006A1 (en) * 2005-04-08 2006-10-26 Baranov Michael V Armchair for formation and correction of human spine

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JPS61143454U (ko) * 1985-02-25 1986-09-04
CN2065851U (zh) * 1989-07-15 1990-11-21 陆永岚 躺仰工作椅床
JPH0538307A (ja) * 1991-08-06 1993-02-19 Nissan Motor Co Ltd 圧力可変シート
KR200171458Y1 (ko) * 1998-02-17 2000-03-02 한만홍 변형이 가능한 시트 쿠션
JP2000175774A (ja) 1998-12-18 2000-06-27 Hitachi Ltd 椅子／ベッド装置
JP2003000392A (ja) 2001-06-22 2003-01-07 Honda Motor Co Ltd 体圧分散型シート
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3081129A (en) * 1960-12-16 1963-03-12 Ridder Clara Ann Chairs and seats
US3990742A (en) * 1975-07-03 1976-11-09 Glass Katalina T Adjustable spinal contour seating
US4437702A (en) * 1981-04-06 1984-03-20 Agosta A Richard Adjustable patient corrective support apparatus
US4993164A (en) * 1987-05-13 1991-02-19 Jacobsen Joseph M Measuring device
US4944554A (en) * 1987-10-02 1990-07-31 Gross Clifford M Active biomechanical chair
US5328245A (en) * 1992-10-30 1994-07-12 Thomas J. Marks Chair having adjustable back support
JPH06327539A (ja) * 1993-05-27 1994-11-29 Mazda Motor Corp 車両のシート装置
US5558398A (en) * 1993-11-08 1996-09-24 Santos; James P. Self-adjusting seating system
US20040100139A1 (en) * 2001-03-14 2004-05-27 Williams David Nicholas Lewis Seat backs
US6676215B1 (en) * 2001-04-09 2004-01-13 The Research Foundation Of State University Of New York Pressure-relieving wheelchair seating apparatus
US20040104610A1 (en) * 2002-12-02 2004-06-03 Jan Jaskot Lumbar support device
US20060238006A1 (en) * 2005-04-08 2006-10-26 Baranov Michael V Armchair for formation and correction of human spine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2610417C2 (ru) * 2015-04-27 2017-02-10 Борис Владимирович Романов Кресло со спинкой, состоящей из подвижных механических сегментов, поддерживающих спину, шею и голову пользователя

Also Published As

Publication number Publication date
WO2009017357A1 (en) 2009-02-05
KR101094604B1 (ko) 2011-12-15
EP2178418A1 (en) 2010-04-28
JP2010535061A (ja) 2010-11-18
KR100916753B1 (ko) 2009-09-14
KR20100012127A (ko) 2010-02-08
CN101784214B (zh) 2012-02-29
KR20090012796A (ko) 2009-02-04
CN101784214A (zh) 2010-07-21
KR20100012126A (ko) 2010-02-08

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Owner name: YOON, KYOUNG HO, KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:YOON, KYOUNG HO;REEL/FRAME:023867/0333

Effective date: 20100125

Owner name: CHANG, SUNG HO, KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:YOON, KYOUNG HO;REEL/FRAME:023867/0333

Effective date: 20100125

STCB Information on status: application discontinuation

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