EP1614370B1 - Swing stowed-type chair - Google Patents

Swing stowed-type chair Download PDF

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Publication number
EP1614370B1
EP1614370B1 EP04705915A EP04705915A EP1614370B1 EP 1614370 B1 EP1614370 B1 EP 1614370B1 EP 04705915 A EP04705915 A EP 04705915A EP 04705915 A EP04705915 A EP 04705915A EP 1614370 B1 EP1614370 B1 EP 1614370B1
Authority
EP
European Patent Office
Prior art keywords
swing
side leg
sitting
leg portions
rearward
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.)
Expired - Lifetime
Application number
EP04705915A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1614370A1 (en
EP1614370A4 (en
Inventor
Minoru c/o Kotobuki Corporation FUJISAWA
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.)
Kotobuki and Co Ltd
Original Assignee
Kotobuki and 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 Kotobuki and Co Ltd filed Critical Kotobuki and Co Ltd
Publication of EP1614370A1 publication Critical patent/EP1614370A1/en
Publication of EP1614370A4 publication Critical patent/EP1614370A4/en
Application granted granted Critical
Publication of EP1614370B1 publication Critical patent/EP1614370B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/02—Rocking chairs
    • 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
    • A47C1/12—Theatre, auditorium, or similar chairs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats

Definitions

  • the present invention relates to a swing stowed-type chair, which is used in combination with a desk, and whose sitting portion is swung forward from a use position at the rear of the desk when the chair is not used, so that at least a seat of the sitting portion is stowed under a top plate of the desk.
  • front and rear herein mean the front and the rear relative to the orientation of the chair. Specifically, relative to the center portion of the seat, the direction to which a back is located is referred to as the rear, and the opposite direction is referred to as the front.
  • This swing stowed-type chair includes: a base portion to be horizontally fixed to a floor or a desk in a classroom or the like; a sitting portion having a back and a seat which are united to each other; a front-side leg portion and a rear-side leg portion, whose lower end portions arc individually connected to the base portion swingably in the forward/rearward direction, and whose upper end portions are individually connected to the sitting portion swingably in the forward/rearward direction, the front-side and rear-side leg portions being arranged in the forward/rearward direction, to form a non-parallel four-joint link; and a swing limiting portion, which limits the swing of the leg portions in a predetermined range.
  • the seat and the back of the sitting portion are set to a forward slanted position, so that it is made possible to stow at least the seat of the sitting portion under the top plate of the desk,
  • the back of the sitting portion is also set to the forward slanted position in a state where the front-side and rear-side leg portions are placed in the forward-swing limit position, when a person attempts to pass the rear of the chair, even if the heights of the hip portion of the person, which is a relatively wide portion, and the height of the upper end portion of the back of the sitting portion generally correspond to each other, the upper end portion of the back does not come into contact with the hip portion, so that there is no possibility that the back of the sitting portion blocks the passage of the person. Thus, a person can very easily pass the rear of the stowed chair.
  • the inventor of the present application found the following fact.
  • the swing limiting portion provides the limit of the rearward-swing limit position on the assumption that the base portion will be horizontally fixed to the floor or a desk.
  • the swing stowed-type chair of the present invention includes: a base portion to be fixed to a floor or a desk; a sitting portion with a back and a seat, which are united to each other; a front-side leg portion, whose lower end portion is connected to the base portion swingably in a forward/rearward direction, and whose upper end portion is connected to the sitting portion swingably in a forward/rearward direction; a rear-side leg portion, whose lower end portion is connected to the base portion swingably in the forward/rearward direction, and whose upper end portion is connected to the sitting portion swingably in the forward/rearward direction, where swing axes of the upper and lower end portions are located more rearward than swing axes of the upper and lower end portions of the front-side leg portion; and a swing limiting portion for limiting, in a predetermined range, the swing of the front-side and rear-side leg
  • the front-side and rear-side leg portions form a non-parallel four-joint link in such a way that the distance between the swing axes of the lower end portions of the front-side and rear-side leg portions is set shorter than the distance between the swing axes of the upper end portions of the front-side and rear-side leg portions, and the leg portions swing in the forward/rearward direction, in order that, in a rearward-swing limit position whose limit is provided by the swing limiting portion, the sitting portion is placed so that the seat and the back are in a use position, while, in a forward-swing limit position whose limit is provided by the swing limiting portion, the sitting portion is placed so that the seat and the back are in a forward slanted position.
  • the swing limiting portion provides the limit of the rearward-swing limit position of the front-side and rear-side leg portions, and the swing limiting portion changes the rearward-swing limit position of the front-side and rear-side leg portions so as to be able to be selectively adapted to any one of the state where the base portion is slanted downward toward the front and the state where the base portion is horizontal, by a fixing means which selectively changes the two of fixed positions of the swing-limiting portion.
  • the seat and the back of the sitting portion which are united to each other, are set to the use position, in which the back is slightly slanted rearward and the seat becomes substantially horizontal, in a state where the front-side and rear-side leg portions are placed in the rearward-swing limit position, so that a person can sit on the sitting portion.
  • the seat and the back of the sitting portion are set to the forward slanted position in a state where the front-side and rear-side leg portions are placed in the forward-swing limit position, so that it is possible to stow at least the seat of the sitting portion under the top plate of the desk.
  • the back of the sitting portion is also set to the forward slanted position in a state where the front-side and rear-side leg portions are placed in the forward-swing limit position, when a person attempts to pass the rear of the chair, even if the height of the hip portion of the person, which is a relatively wide portion, and the height of the upper end portion of the back of the sitting portion generally correspond to each other, the upper end portion of the back does not come into contact with the hip portion, so that it is made possible to eliminate the possibility that the back of the sitting portion blocks the passage of the person.
  • a person can very easily pass the rear of the stowed chair, which is very advantageous when a person has to quickly pass the rear of the chair, especially at the time of emergency evacuation or leaving his/her seat during a lecture, for example.
  • the swing limiting portion changes the rearward-swing limit position of the front-side and rear-side leg portions so as to be able to be selectively adapted to any one of the state where the base portion is slanted downward toward the front and the state where the base portion is horizontal by a fixing means which selectively changes the two of fixed positions of the swing limiting portion.
  • the front-side and rear-side leg portions may place the sitting portion so that the back thereof is set to a vertical position, in a middle swing position between the rearward-swing limit position and the forward-swing limit position, whose limits are provided by the swing limiting portion.
  • At least one of the front-side and rear-side leg portions may have a rectangular U shape in cross section, and, in an opening portion thereof, the front-side and rear-side leg portions may be fitted together.
  • a gap is not formed between the front and rear leg portions.
  • one front-side leg portion and one rear-side leg portion may be provided.
  • FIGS. 1(a) and 1(b) are a front view and a side view, respectively, showing an example of a swing stowed-type chair of the present invention, in which a base portion is slanted downward toward the front, and a front side leg portion and a rear side leg portion are placed in a rearward-swing limit position.
  • FIGS. 2(a) and 2(b) are a plan view and a bottom view, respectively, showing the chair of the example in the same state as that of FIGS. 1(a) and 1(b) .
  • FIGS. 3(a) and 3(b) are cross-sectional views taken along line A-A of FIG.
  • FIG. 3(c) is a cross-sectional view taken along the above line A-A showing the chair of the example, in which the base portion is slanted downward toward the front, and the front-side and rear-side leg portions are placed in a forward-swing limit position.
  • FIG. 4 is an exploded perspective view showing a configuration of the chair of the example
  • FIGS. 5(a), 5(b) and 5(c) are a plan view, a front view and a side view, respectively, showing a stopper assembly of the chair of the example.
  • the swing stowed-type chair of this example includes: the base portion 1 to be fixed to a floor (not shown) with bolts B (see FIG. 4 ) or the like; and a sitting portion 2 with a back 2a and a seat 2b formed integrally with each other by, for example, forming of a plywood, molding of fiber-reinforced plastic, blow molding of plastic, injection molding of plastic, or the like, and with a bracket 2c fixed on the underside of the seat 2b with the bolts B (see FIG. 4 ) or the like.
  • the base portion 1 and the bracket 2c are formed so as to have plate-shaped portions 1a and 2d, respectively, and have two ribs 1b and two ribs 2e, respectively, which protrude from the plate-shaped portions 1a and 2d, respectively, and extend parallel to each other, through press working of a steel plate, casting of aluminum alloy, or the like.
  • the swing stowed-type chair of this example includes: the front-side leg portion 4, whose lower end portion 4a is connected to the two ribs 1b of the base portion 1 via a shaft 3 swingably in a forward/rearward direction, and whose upper end portion 4b is connected to the two ribs 2e of the bracket 2c of the sitting portion 2 via a shaft 5 swingably in the forward/rearward direction; and the rear-side leg portion 7, whose lower end portion 7a is connected to the two ribs 1b of the base portion 1 via a shaft 6 swingably in the forward/rearward direction, and whose upper end portion 7b is connected to the two ribs 2c of the bracket 2c of the sitting portion 2 via a shaft 8 swingably in the forward/rearward direction, the rear-side leg portion 7 being located more rearward than the front-side leg portion 4.
  • the front-side leg portion 4 has a substantially "C" shape in cross section, which has a gap 4c in a central portion in a width direction of the portion of the front-side leg portion 4 facing the rear-side leg portion 7, the gap 4c extending in a longitudinal direction of the leg portion.
  • the rear-side leg portion 7 has a rectangular "U" shape in cross section and is loosely fitted together with the front-side leg portion 4 with the opening portion of the rectangular U shape being directed to the front-side leg portion 4 (sec FIGS. 3(b) and 4 )
  • a central axis of the shaft 6, which is an axis of the swing of the rear-side leg portion 7 relative to the base portion 1, is located more rearward than a central axis of the shaft 3, which is an axis of the swing of the front-side leg portion 4 relative to the base portion 1.
  • a central axis of the shaft 8, which is an axis of the swing of the rear-side leg portion 7 relative to the bracket 2c is located more rearward than a central axis of the shaft 5, which is an axis of the swing of the front-side leg portion 4 relative to the bracket 2c.
  • the shafts 3, 5, 6 and 8 are designed not to fall out from the ribs 1b and 2e via, for example, C rings R (see FIG. 4 ), or the like.
  • the distance between the central axes of the shafts 3 and 6, which is equal to the distance between the swing axes of the lower end portions 4a and 7a of the front-side and rear-side leg portions 4 and 7, is set shorter than the distance between the central axes of the shafts 5 and 8, which is equal to the distance between the swing axes of the upper end portions 4b and 7b of the front-side and rear-side leg portions 4 and 7, so that the front-side and rear-side leg portion 4 and 7 form a non-parallel four-joint link.
  • the distance between the central axes of the shafts 5 and 3, which distance corresponds to the distance between the swing axes of the upper and lower end portions 4b and 4a of the front-side leg portion 4, and the distance between the central axes of the shafts 8 and 6, which distance corresponds to the distance between the swing axes of the upper and lower end portions 7b and 7a of the rear-side leg portion 7 are set substantially equal to each other.
  • the support height for the shaft 3 of the rib 1b of the base portion 1 is set lower than the support height for the shaft 6 of the rib 1b of the base portion 1.
  • a shaft 10 is fitted into an upper portion of the rear-side leg portion 7, and is fixed via a C ring, for example.
  • a shaft 10 is fitted into an upper portion of the rear-side leg portion 7, and is fixed via a C ring, for example.
  • the stopper assembly 11 as a swing limiting portion, which limits the swing of the front-side and rear-side leg portions 4 and 7 relative to the base portion 1 and the bracket 2c of the sitting portion 2 in a predetermined range, is fixed ,with four bolts B, selectively via one set of bolt holes (the upper set of bolt holes 4d in the figure) out of bolt holes 4d and 4e, which are formed in an upper portion of the front-side leg portion 4, which portion faces the rear-side leg portion 7, in two sets being slightly, vertically displaced and each set including four holes.
  • the stopper assembly 11 has an upper stopper 11b and a lower stopper 11c made of rubber, which are respectively, firmly supported via rectangular U-shaped brackets 11a.
  • the stopper assembly 11 is fixed via the upper set of bolt holes 4d with bolts, when, in a state where the base portion 1 is slanted downward toward the front by an angle ⁇ (about 5° in the figure), the front-side and rear-side leg portions 4 and 7 are swung relative to the base portion 1 and the bracket 2c so that the sitting portion 2 moves back as shown in FIG.
  • the shaft 10 provided to the rear-side leg portion 7 comes into contact with the upper stopper 11b, which protrudes rearward from the front-side leg portion 4 through the gap 4c of the front-side leg portion 4, so that the upper stopper 11b provides the limit of the rearward-swing limit position of the front-side and rcar-side leg portions 4 and 7 in such a manner that the sitting portion 2 is set to a use position in which the back 2a of the sitting portion 2 is slightly slanted rearward and the seat 2b becomes substantially horizontal.
  • the upper stopper 11b provides the limit of the rearward-swing limit position of the front-side and rcar-side leg portions 4 and 7 in such a manner that the sitting portion 2 is set to a use position in which the back 2a of the sitting portion 2 is slightly slanted rearward and the seat 2b becomes substantially horizontal.
  • the upper stopper 11b provides the limit of the rearward-swing limit position of the front-side and rear-side leg portions 4 and 7 in such a manner that the sitting portion 2 is set to the use position when the front-side and rear-side leg portions 4 and 7 are swung relative to the base portion 1 and the bracket 2c so that the sitting portion 2 moves back away from a desk 9.
  • FIG. 7 shows that the upper stopper 11b provides the limit of the rearward-swing limit position of the front-side and rear-side leg portions 4 and 7 in such a manner that the sitting portion 2 is set to the use position when the front-side and rear-side leg portions 4 and 7 are swung relative to the base portion 1 and the bracket 2c so that the sitting portion 2 moves back away from a desk 9.
  • the lower stopper 11c provides the limit of the forward-swing limit position of the front-side and rear-side leg portions 4 and 7 in such a manner that the sitting portion 2 is set to the stowed position when the front-side and rear-side leg portions 4 and 7 are swung relative to the base portion 1 and the bracket 2c so that the sitting portion 2 comes close to the desk.
  • FIG. 9 is an explanatory diagram showing the movement of the sitting portion 2 caused by the non-parallel four-joint link formed by such front-side and rear-side leg portions 4 and 7 in relation to the desk 9.
  • the desk 9 in the illustrated example has a leg portion 9a, whose lower end portion is fixed to the floor F to which the base portion 1 is fixed, and a top plate 9b, which is fixed to an upper end portion of the leg portion 9a.
  • the seat 2b and the back 2a of the sitting portion 2 are set to a forward slanted position in a state where the front-side and rear-side leg portions 4 and 7 are placed in the forward-swing limit position, so that it is possible to stow the seat 2b of the sitting portion 2 under the top plate 9b of the desk 9.
  • the back 2a of the sitting portion 2 is also set to the forward slanted position in a state where the front-side and rear-side leg portions 4 and 7 are placed in the forward-swing limit position, when a person H attempts to pass the rear of the chair, even if the heights of the hip portion of the person H, which is a relatively wide portion, and the height of the upper end portion of the back 2a of the sitting portion 2 generally correspond to each other, the upper end portion of the back 2a does not come into contact with the hip portion, so that it is made possible to eliminate the possibility that the back 2a of the sitting portion 2 blocks the passage of the person H.
  • a person H can very easily pass the rear of the stowed chair, which is very advantageous when a person has to quickly pass the rear of the chair, especially at the time of emergency evacuation or leaving his/her scat during a lecture, for example.
  • FIGS. 13(a) to 13(c) show variation examples of the above example, respectively.
  • each of a front-side leg portion 4 and a rear-side leg portion 7 is formed by combining pipe members so as to have an "I" shape
  • each of a front-side leg portion 4 and a rear-side leg portion 7 is formed in a thick plate shape.
  • a rear-side leg portion 7 is formed in a rectangular tube shape
  • a front-side leg portion 4 is formed in a thick plate shape and is housed in the rectangnlar-tube shaped rear-side leg portion 7.
  • FIG. 13(a) show variation examples of the above example, respectively.
  • each of a front-side leg portion 4 and a rear-side leg portion 7 is formed by bending a pipe member so as to have a "U" shape.
  • a rear-side leg portion 7 is formed so as to have a rectangular U shape in cross-section, and a front-side leg portion 4 is formed in a rectangular tube shape and is placed in the rear-side leg portion 7 so as to be loosely fitted into an opening portion of the rear-side leg portion 7 of a rectangular U shape.
  • a stopper portion such as a stopper assembly, with which the member fixed to the front-side leg portion comes into contact due to the swing of the front-side and rear-side leg portions, may be provided to the rear-side leg portion, or a stopper member coming into contact with at least one of the front-side and rear-side leg portions may be provided to the base portion and/or the sitting portion, for example.
  • the number of at least one of the front-side and rear-side leg portions may be two or more.
  • the distance between the swing axes of the upper and lower end portions of the front-side leg portion may be shorter than the distance between the swing axes of the upper and lower end portions of the rear-side leg portion, while the axes of the swing of the lower end portions of the front-side and rear-side leg portions relative to the base portion may be located at the same height.
  • the base portion may be fixed to a certain portion of the desk, such as the leg portion thereof, for example.
  • the back and the seat of the sitting portion may be formed separately and may be integrally connected via hardware or the like.
  • the swing stowed-type chair of the present invention may further includes impelling means, such as a spring or the like, for impelling the front-side leg portion and/or the rear-side leg portion in a swinging manner so that at least the seat of the sitting portion is stowed under the top plate of the desk in a free state in which no one is sitting to achieve a stowed state.
  • impelling means such as a spring or the like, for impelling the front-side leg portion and/or the rear-side leg portion in a swinging manner so that at least the seat of the sitting portion is stowed under the top plate of the desk in a free state in which no one is sitting to achieve a stowed state.
  • the swing stowed-type chair of the present invention is not limited to the school chairs, but can be applied to the chairs for a civic center, a conference room, a conference hall or the like, for example.

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  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chairs Characterized By Structure (AREA)
EP04705915A 2003-03-27 2004-01-28 Swing stowed-type chair Expired - Lifetime EP1614370B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNB03107958XA CN1245916C (zh) 2003-03-27 2003-03-27 摇动可收式座椅
PCT/JP2004/000752 WO2004084677A1 (ja) 2003-03-27 2004-01-28 揺動収納式椅子

Publications (3)

Publication Number Publication Date
EP1614370A1 EP1614370A1 (en) 2006-01-11
EP1614370A4 EP1614370A4 (en) 2007-07-25
EP1614370B1 true EP1614370B1 (en) 2010-02-24

Family

ID=33035130

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04705915A Expired - Lifetime EP1614370B1 (en) 2003-03-27 2004-01-28 Swing stowed-type chair

Country Status (4)

Country Link
EP (1) EP1614370B1 (ko)
KR (1) KR100614197B1 (ko)
CN (1) CN1245916C (ko)
WO (1) WO2004084677A1 (ko)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100953413B1 (ko) 2009-12-03 2010-04-19 황대순 각도조절이 가능한 관람식 의자
JP5641896B2 (ja) * 2010-11-18 2014-12-17 コトブキシーティング株式会社 揺動収納式椅子及び緩衝装置用ケース
US9883748B2 (en) * 2015-05-15 2018-02-06 Knoll, Inc. Training device for a seating device and method of using the same
CN105167412B (zh) * 2015-09-10 2017-06-13 哈尔滨理工大学 一种安全可靠的一体式防震桌椅
CN108652290A (zh) * 2018-05-16 2018-10-16 广州翔特钢艺办公设备有限公司 可调节座椅
CN114831842B (zh) * 2022-07-04 2022-09-09 中国中医科学院望京医院(中国中医科学院骨伤科研究所) 一种康复辅助装置及其使用方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2011207A1 (de) * 1970-03-10 1971-09-23 Donath K Dreh- und/oder schwenkbarer Sitz für Reihengestühl, insbesondere für Hörsäle
JPS5318203U (ko) * 1976-07-27 1978-02-16
CH652288A5 (de) * 1981-12-24 1985-11-15 Syntech Sa Hoersaalstuhl.
JP2927712B2 (ja) * 1995-10-16 1999-07-28 愛知株式会社 講義室用椅子
JP3751802B2 (ja) * 2000-07-14 2006-03-01 株式会社コトブキ 揺動収納式椅子
JP2003000380A (ja) * 2001-06-20 2003-01-07 Inter Office:Kk 学校用椅子

Also Published As

Publication number Publication date
WO2004084677A1 (ja) 2004-10-07
KR100614197B1 (ko) 2006-08-22
CN1245916C (zh) 2006-03-22
CN1533729A (zh) 2004-10-06
EP1614370A1 (en) 2006-01-11
EP1614370A4 (en) 2007-07-25
KR20050111615A (ko) 2005-11-25

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