WO2005025378A1 - Chaise - Google Patents

Chaise Download PDF

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Publication number
WO2005025378A1
WO2005025378A1 PCT/JP2004/012793 JP2004012793W WO2005025378A1 WO 2005025378 A1 WO2005025378 A1 WO 2005025378A1 JP 2004012793 W JP2004012793 W JP 2004012793W WO 2005025378 A1 WO2005025378 A1 WO 2005025378A1
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WO
WIPO (PCT)
Prior art keywords
seat
base
chair
leg
legs
Prior art date
Application number
PCT/JP2004/012793
Other languages
English (en)
Japanese (ja)
Inventor
Toshiya Yamauchi
Original Assignee
Runeseikou Inc.
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 Runeseikou Inc. filed Critical Runeseikou Inc.
Publication of WO2005025378A1 publication Critical patent/WO2005025378A1/fr

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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C9/00Stools for specified purposes
    • A47C9/002Stools for specified purposes with exercising means or having special therapeutic or ergonomic effects
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C3/00Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/02Rocking chairs
    • A47C3/025Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame
    • A47C3/0252Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame connected only by an elastic member positioned between seat and base frame
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/002Chair or stool bases
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/002Chair or stool bases
    • A47C7/004Chair or stool bases for chairs or stools with central column, e.g. office chairs

Definitions

  • the present invention relates to a chair, and more particularly to a chair capable of moving a position of a seat.
  • a tilting means composed of a plurality of rubber bodies is provided with a lower portion of a seat portion and a support portion at an upper end of a leg portion.
  • a chair has been proposed in which the tilt angle of the seat can be freely adjusted by interposing the seat between them.
  • one object of the present invention is to provide a chair capable of freely changing the inclination movement of a seat within a relatively large range.
  • a chair according to the present invention includes a seat, a leg attached to the seat, a base attached to the leg, and a tilting means disposed between a lower surface of the leg and an upper surface of the base. Is provided.
  • the inclination means includes an elastic body.
  • the load is elastically moved from the seat to the legs through the legs.
  • the portion of the elastic body near the center of gravity undergoes compression elastic deformation, and the portion of the elastic body located away from the center of gravity undergoes tensile elastic deformation. Since the inclination means including the elastic body is disposed between the leg and the base, the leg is inclined with respect to the base in accordance with the elastic deformation of the elastic body.
  • the seat From the position between the lower surface of the leg where the tilting means is located and the upper surface of the base, the seat is located at a position separated by the length of the leg, so that the range of the tilt is larger than the tilt movement with respect to the base.
  • the seat moves obliquely with respect to the base.
  • the range of the tilt movement of the seat can be increased as compared with the conventional chair.
  • the seat when the seat is inclined by a certain angle, it will not tilt any further due to the compression elastic deformation limit and the tensile deformation limit of the elastic body. Therefore, it is possible to freely change the inclination movement of the seat within a relatively large range according to the degree of the posture of the user.
  • the elastic body is preferably made of a material capable of elastic deformation accompanied by tension, compression and bending.
  • the upper surface of the base has an area surrounding the projection surface of the seat to the base.
  • the seat can be stably tilted within a relatively large range within the range of the area of the upper surface of the base.
  • the inclining means include a plurality of elastic bodies.
  • the elastic body located near the center of gravity undergoes compression elastic deformation, and the elastic body located away from the center of gravity undergoes tensile elastic deformation. Since the tilting means including the plurality of elastic bodies is disposed between the leg and the base, the legs tilt with respect to the base in accordance with the elastic deformation of the plurality of elastic bodies.
  • the seat Since the seat is located at a position separated by the length of the leg from the position between the lower surface of the leg where the tilting means is located and the upper surface of the base, a range larger than the tilt movement of the leg relative to the base.
  • the seat moves inclining with respect to the base. This makes it possible to increase the range of the tilt movement of the seat as compared with a conventional chair. Also, when the seat is inclined by a certain angle, it will not tilt any more due to the compression elastic deformation limit and the tensile elastic deformation limit of the elastic body. Therefore, the inclination of the seat can be freely changed within a relatively large range according to the degree of the posture of the user.
  • the plurality of elastic bodies are arranged on the upper surface of the base so as to surround the center of the seat.
  • the seat can be tilted and moved in a large range with respect to the base, and the seat can be freely moved within a certain range to the extent that the center of the seat moves. This allows the seat to be rotated about the center of the seat.
  • the chair includes a plurality of legs, and each of the plurality of elastic bodies is arranged between a lower surface of each of the plurality of legs and an upper surface of the base.
  • the plurality of legs can be stably supported by the base, and the seat can be stably tilted within a relatively large range with respect to the base.
  • the plurality of legs are disposed so as to be close to the center of the seat on the seat side, and spaced apart from each other on the base side so as to surround the center of the seat. It is preferred to be located at In this case, since the plurality of legs are arranged so as to be closer to the center of the seat on the seat side, even if the seat is tilted within a relatively large range with respect to the base, the tilting movement does not occur.
  • the strength can be improved so that the steel can be stably supported.
  • the strength can be improved, and the range of the tilt movement or the range of the rotation movement with respect to the base of the seat can be limited.
  • each of the plurality of legs is directed from the seat to the base. It is preferable to further include a connecting member that is arranged so as to extend substantially linearly by force, and connects the plurality of legs to each other at a position between the seat and the base.
  • the connecting member since the connecting member connects the plurality of legs to each other at a position between the seat and the base, even if the seat is tilted and moved within a relatively large range with respect to the base, the connecting member is not moved.
  • the strength can be improved so that the tilt movement can be stably supported.
  • the strength can be improved, and the range of the tilting movement or the range of the rotating movement with respect to the base of the seat can be limited.
  • an intervening member is disposed so as to surround the leg portion between the lower surface of the leg portion and the upper surface of the base portion, and the plurality of elastic members interpose so as to surround the center of the seat portion.
  • it is arranged on a member.
  • the seat can be stably moved relative to the base within a relatively large range by disposing a plurality of elastic bodies on the intervening member. .
  • the intervening member has an outer peripheral side wall surrounding the plurality of elastic bodies.
  • the angle of inclination of the seat with respect to the base can be limited by the outer peripheral side wall surface of the intervening member. It is possible to prevent a large inclination and a fall.
  • the intervening member is disposed between the lower surface of the single leg and the upper surface of the base, and the intervening member and the base It is preferable that each of the plurality of elastic bodies is disposed between the elastic body and the upper surface of the elastic body.
  • the intervening member is disposed between a lower surface of each of the plurality of legs and an upper surface of the base, and the intervening member and the base are disposed. It is preferable that each of the plurality of elastic bodies is disposed between the elastic body and the upper surface of the elastic body.
  • the inclination movement of the seat can be freely changed within a relatively large range according to the degree of the posture of the user. Therefore, even when the user performs the work in an unreasonable posture with the body tilted considerably, the entire buttocks can be stably put on the seat throughout the work, thereby improving work efficiency. As a result, the work can be performed in a relaxed manner, and the fatigue of the worker can be reduced. Depending on the type of work, workers may have back pain later on Problems can be prevented.
  • the seat can be freely moved within a certain range until the center of the seat moves, so that the seat can be rotated around the center of the seat. it can. Therefore, even when it is desired to use the chair with only the seat portion approaching the work position according to the type of work, a stable sitting state can be obtained. Because the seat can be rotated, it is possible to balance the body by rotating the hips with the buttocks on the seat, and to apply it to exercise equipment for improving health such as preventing back pain. Can be. Brief Description of Drawings
  • FIG. 1 is a perspective view showing a chair according to Embodiment 1 of the present invention.
  • FIG. 2 is a schematic longitudinal sectional view of the chair shown in FIG.
  • FIG. 3 is a top view partially showing a cross section as viewed from the direction of arrow m in FIG.
  • FIG. 4 is a front view showing the chair of FIG. 1 when the seat is inclined in one direction.
  • FIG. 5 is a front view showing the chair of FIG. 1 when the seat is inclined in the other direction.
  • FIG. 6 is a top view schematically showing a tilting rotary movement of the chair of FIG. 1 with respect to the base of the seat.
  • FIG. 7 is a perspective view showing a chair according to Embodiment 2 of the present invention.
  • FIG. 8 is a schematic longitudinal sectional view of the chair shown in FIG.
  • FIG. 9 is a perspective view showing a chair according to Embodiment 3 of the present invention.
  • FIG. 10 is a schematic longitudinal sectional view of the chair shown in FIG.
  • FIG. 11 is a top view partially showing a cross section as viewed from the direction of arrow XI in FIG.
  • FIG. 12 is a front view showing the chair of FIG. 9 when the seat is inclined in one direction.
  • FIG. 13 is a front view showing the chair of FIG. 9 when the seat is inclined in the other direction.
  • FIG. 14 schematically shows the tilting rotation of the chair of FIG. 9 relative to the base of the seat.
  • FIG. 15 is a perspective view showing a chair according to Embodiment 4 of the present invention.
  • FIG. 16 is a schematic longitudinal sectional view of the chair shown in FIG.
  • FIG. 17 is a perspective view (A) and a side view (B) showing a chair according to Embodiment 5 of the present invention.
  • FIG. 18 is a perspective view (A) and a side view (B) showing a chair according to Embodiment 6 of the present invention.
  • FIG. 19 is a perspective view (A) and a side view (B) showing a chair according to Embodiment 7 of the present invention.
  • FIG. 20 is a perspective view (A) and a side view (B) showing a chair according to Embodiment 8 of the present invention.
  • FIG. 21 is an exploded perspective view showing a chair according to Embodiment 9 of the present invention.
  • FIG. 22 is a top view of the seat of the chair shown in FIG. BEST MODE FOR CARRYING OUT THE INVENTION
  • FIG. 1 is a perspective view showing a chair according to Embodiment 1 of the present invention
  • FIG. 2 is a schematic longitudinal sectional view of the chair shown in FIG. 1
  • FIG. 3 is a partial view seen from the direction of arrow ⁇ in FIG.
  • Figure 4 is a front view showing the chair when the seat is tilted in one direction
  • Figure 5 is a front view showing the chair when the seat is tilted in the other direction
  • Fig. 6 is a top view schematically showing the tilting rotation of the seat relative to the base.
  • the chair 1 has a seat 100 on which a user's buttocks are placed, and a plurality of, for example, four legs 2 10 0, 2 attached to the seat 100. Consisting of 20, 230 and 240 and a base 300 attached to the legs 210, 220, 230 and 240.
  • the inclining means 400 is disposed between the lower surface of each of the legs 210, 220, 230 and 240 and the upper surface of the base 300, and the elastic means 410, 4 It is composed of 20, 40, and 44.
  • the seat 100 is formed in a substantially disk shape, and the diameter of the seat 100 is:
  • Base 3 0 0 is formed in a substantially disc shape, the diameter of the base portion 3 0 0 a D 2.
  • Elastic means 4 1 0, 4 20, 43 0 and 44 0 are arranged at the respective vertices of a substantially square shape on the upper surface of the base 300 so as to surround the center of the seat 100, and the elastic means 4 10, 4 2 0, 4 3 0 Oyo circumferential diameter surrounding beauty 4 4 0 is D 3.
  • Seat 1 0 0 The diameter larger Ri good diameter D 3, the diameter D 2 of the base 3 0 0 it is larger than the diameter of the seat portion 1 0 0.
  • the upper surface of base 300 has an area large enough to surround the projection surface of base 100 on base 300.
  • the projection surface of the seat 100 onto the base 300 surrounds the elastic means 4100, 420, 4300 and 4400 arranged on the upper surface of the base 300.
  • the legs 210, 220, 230, and 240 extend substantially linearly downward from the lower surface of the seat 100 to the height Hi, and are mutually centered on the seat 100. They are arranged close to each other. Also, the legs 210, 220, 230 and 240 are spaced apart from each other on the upper surface of the base 300 so as to surround the center of the seat 100, base
  • the legs 210, 220, 230 and 240 are arranged on the side of the seat 100 so as to be close to the center of the seat 100, and the base 300 On the sides, they are arranged so as to surround the center of the seat 100 with a space between each other.
  • the leg portion 210 is formed of, for example, a metal tube, and is attached to the lower surface of the seat portion 100 and extends substantially linearly. It is composed of an inclined portion 2 12 connected to 2 11 and bent, and a lower straight portion 2 13 connected to the inclined portion 2 12 and extending substantially linearly.
  • the leg portion 230 is formed of, for example, a metal tube, and is connected to the upper straight portion 231 and the upper straight portion 231 attached to the lower surface of the seat portion 100 and extending substantially linearly. And a lower straight portion 2 33 connected to the inclined portion 2 32 and extending substantially linearly.
  • the legs 220 and 240 have the same configuration as described above.
  • Elastic means 4 10, 4 2 0 arranged between the lower surface of each of the legs 2 1 0, 2 2 0, 2 3 0 and 2 4 0 and the upper surface of the base 3 0 0 as shown in Figure 1 , 4330 and
  • the elastic means 410 is provided with an elastic body 411 made of an elastic material such as a vibration-proof rubber, for example, as an elastically deformable material with tension, compression and bending. ing.
  • a metal end plate 4 12 is tightly fixed to the upper end surface of the elastic body 4 1 1 by baking or the like.
  • a metal end plate 4 13 is tightly fixed to the lower end surface of the elastic body 4 11 by baking or the like.
  • a metal external thread portion 414 is formed so as to protrude from the center thereof.
  • a metal external thread portion 415 is formed so as to protrude from the center thereof.
  • the elastic body 4 1 1, the end plates 4 1 2 and 4 13, and the male thread sections 4 14 and 4 15 are integrated into one part.
  • the elastic body 431, the end plates 432 and 433, and the external thread portions 434 and 435 are integrated to form one part.
  • the embedded nut 4 16 is inserted and fixed inside the lower linear portion 2 13 of the leg portion 210.
  • One end of the elastic body 411 is fixed to the leg 210 by screwing the male screw part 414 into the embedded nut 416.
  • the other end of the elastic body 411 is fixed to the base 300 by screwing the male screw 415 inserted through the hole 310 into the nut 417 with a washer.
  • the embedding nut 4336 is inserted and fixed inside the lower straight portion 233 of the leg portion 230.
  • One end of the elastic member 431 is fixed to the leg portion 230 by screwing the external thread portion 4334 into the embedding nut 4336.
  • On the lower surface of the base 300 there is formed a hole 330 composed of a small hole for passing the male screw portion 435 and a large hole for accommodating the nut 437 with a washer.
  • the other end of the elastic body 431 is fixed to the base portion 300 by screwing the male screw portion 435 inserted through the hole 330 into the nut 437 with a washer.
  • the elastic means 420 and 440 also have the same configuration as described above. As shown in FIG. 3, the elastic means 410, 420, 430 and 440 are spaced apart from each other so as to surround the center of the base 300 on the upper surface of the base 300. It is arranged at each vertex of a substantially square shape. The lower portions of the legs 210, 220, 230, and 240, that is, the lower straight portions, are similarly spaced from each other so as to surround the center of the base 300 on the upper surface of the base 300. Are arranged at each vertex of a substantially square shape. In the chair 1 configured as described above, the user tilts the body forward or left to change the position of the center of gravity in the direction indicated by the arrow P in FIG.
  • the load is applied from the seat 100 through the legs 210, 220, 230 and 240 to the elastic means 410, 420, 43, and 44.
  • the elastic body 4 11 is compressed elastically deformed in the elastic means 4 10 located closest to the center of gravity, and the elastic body 4 is set in the elastic means 4 3 0 located farthest from the center of gravity. 3 1 undergoes tensile elastic deformation.
  • the legs 210, 220, 230, and 240 are inclined forward or left with respect to the base 300 in accordance with the natural deformation of the plurality of elastic bodies.
  • the load is applied from the seat 100 through the legs 210, 220, 230 and 240 to the elastic means 4100, 420, 430 and 440 and to the center of gravity.
  • the elastic body 431 is compressed and elastically deformed at the nearest elastic means 4330, and the elastic body 411 is tensilely elastically deformed at the elastic means 410 farthest from the center of gravity. .
  • the legs 210, 220, 230 and 240 are inclined backward or to the right with respect to the base 300 in accordance with the elastic deformation of the plurality of elastic bodies.
  • the seat 100 is at a distance from the position between the upper surface of the leg and the leg by the lengths of the legs 210, 220, 230 and 240. For this reason, the seat 100 tilts with respect to the base 300 in a range larger than the tilt movement of the legs 210, 220, 230 and 240 with respect to the base 300- It is possible to do this-this-better-compared to conventional chairs-the seat-the tilting movement range can be increased.
  • the seat 100 when the seat 100 is tilted by a certain angle, the seat is not tilted any more due to the limit of the compressive elastic deformation and the limit of the tensile elastic deformation of the elastic body. Therefore, the tilt movement of the seat 100 can be freely changed within a relatively large range according to the degree of the posture of the user.
  • each of the elastic means 4 10, 4 2 0, 4 3 0 and 4 4 0 is arranged on the upper surface of the base 3 00 so as to surround the center of the seat 100. ( Therefore, the seat 100 can be tilted and moved in a large range with respect to the base 300, and by the time the center of the seat 100 moves, the two-dot chain line in FIG. As shown, the seat 100 can be freely moved within a certain range with respect to the base 300. Thereby, the seat 100 is rotated around the center of the seat 100. be able to.
  • a stable sitting state can be obtained even when it is desired to use the chair with only the seat 100 approaching the work position according to the type of work. Since the seat 100 can be rotated, it is possible to balance the body by rotating the hips while the buttocks are placed on the seat 100, and to improve health such as prevention of back pain It can be applied to exercise equipment for sports.
  • the upper surface of the base portion 300 has an area surrounding the projection surface of the seat portion 100 on the base portion 300. Therefore, the seat 100 can be stably tilted and moved within a relatively large range within the range of the area of the upper surface of the base 300.
  • the chair 1 has a plurality of legs 210, 220, 230 and 240.
  • a plurality of elastic means 4 10, 4 2 0, 4 3 0 and 4 0 between the lower surface of each of the plurality of legs 2 1 0, 2 2 0, 2 3 0 and 2 4 0 and the upper surface of the base 3 0 0 4 4 0 is arranged.
  • the plurality of legs 210, 220, 230, and 240 can be stably supported by the base 300, and the seat 100 can be supported with respect to the base 300. And can be stably tilted within a relatively large range.
  • the strength can be improved so that the tilt can be stably supported. it can.
  • the range of the tilt movement or the range of the rotation movement of the seat 100 with respect to the base 300 Can be limited.
  • FIG. 7 is a perspective view showing a chair according to Embodiment 2 of the present invention
  • FIG. 8 is a schematic longitudinal sectional view of the chair shown in FIG.
  • the chair 2 has a seat 500 on which the user's hips can be placed, and a seat
  • the inclining means 800 is disposed between the lower surface of each of the legs 61 0, 62 0, 63 0 and 64 0 and the upper surface of the base 700, and the elastic means 8 100, It consists of 820, 830 and 8400.
  • the seat 500 is formed in a substantially disc shape, and the diameter of the seat 500 is 13.
  • the base 7 0 0 is formed in a substantially disc shape, the diameter of the base 7 0 0 is D 2.
  • the elastic means 8100, 8200, 8300 and 8400 are arranged at the respective vertices of substantially square shape on the upper surface of the base 700 so as to surround the center of the seat 500.
  • circumference diameter surrounding the means 8 1 0 8 2 0, 8 3 0 and 8 4 0 is D 3.
  • Seat 5 0 0 The diameter larger Ri good diameter D 3, the diameter D 2 of the base portion 7 0 0 is larger than the diameter D i of the seat part 5 0 0.
  • the upper surface of base 700 has an area large enough to surround the projection surface of base 500 on base 700.
  • the projection surface of the seat 500 onto the base 700 surrounds the elastic means 8100, 820, 830 and 8400 arranged on the upper surface of the base 700.
  • the legs 61 0, 62 0, 63 0 and 64 0 are spaced from each other so as to surround the center of the seat 500, and from the lower surface of the seat 500 to the base 700. It is arranged so as to extend substantially linearly downward to the upper surface of the.
  • the seat 5 0 0 position in the height from the lower surface of, or at the position of the height H 2 from the upper surface of the base portion 7 0 0, the support ring as a connecting member tubular member 9 0 0 legs 6 1 0 , 62 0, 63 0, and 64 0 are fixed to the outer peripheral surface to connect the legs 6 10, 6 20, 6 30, and 6 40 to each other.
  • the plurality of legs 6 10, 6 2 0, 6 3 0 and 6 4 0 are connected to each other at a position where the support cylindrical member 900 is located between the seat 5 0 0 0 and the base 7 0 0 0. I have. For this reason, even if the seat 500 is tilted and moved within a relatively large range with respect to the base 700, The strength can be improved so that the tilt movement can be stably supported. In addition, the strength can be improved, and the range of the tilt movement or the range of the rotary movement of the seat 500 with respect to the base 700 can be limited.
  • elastic means 8 10, 8 2 0 arranged between the lower surface of each of the legs 6 10, 6 2 0, 6 3 0 and 6 4 0 and the upper surface of the base 7 0 0 , 830 and 840 are configured as follows.
  • the elastic means 8110 includes an elastic body 811 made of an elastic substance such as a vibration-proof rubber, for example, as an elastically deformable substance with tension, compression and bending. ing.
  • a metal end plate 812 is tightly fixed by baking or the like.
  • a metal end plate 8 13 is tightly fixed to the lower end surface of the elastic body 8 11 by baking or the like.
  • a metal male screw portion 814 is formed so as to protrude from the center force thereof.
  • a metal external thread portion 815 is formed so as to protrude from the center thereof.
  • the elastic body 8 11, the end plates 8 12 and 8 13, and the male thread portions 8 14 and 8 15 are integrated into one part.
  • the elastic body 831, the end plates 832 and 833, and the male thread portions 834 and 835 are integrated into one part.
  • the embedded nut 816 is inserted and fixed inside the leg 610.
  • One end of the elastic body 811 is fixed to the leg 610 by screwing the male screw portion 814 into the embedded nut 816.
  • a hole 710 composed of a small hole for passing the male screw portion 815 and a large hole for accommodating the nut 817 with a washer is formed.
  • the other end of the elastic body 811 is fixed to the base 700 by screwing the male screw portion 815 inserted through the hole 7110 into the nut 817 with a washer.
  • the embedding nut 836 is inserted and fixed inside the leg 630.
  • One end of the elastic body 831 is fixed to the leg 6330 by screwing the external thread 834 into the embedding nut 836.
  • a hole 730 is formed which is composed of a small hole for passing the male screw portion 835 and a large hole for accommodating the nut 837 with a washer.
  • Male thread 8 3 5 inserted through hole 7 3 0 with washer
  • the other end of the elastic body 831 is fixed to the base 700 by being screwed into the nut 837.
  • the elastic means 620 and 640 have the same configuration as described above.
  • the chair 2 of the second embodiment configured as described above can achieve the same operation and effect as the chair 1 of the first embodiment described above.
  • FIG. 9 is a perspective view showing a chair according to Embodiment 3 of the present invention
  • FIG. 10 is a schematic longitudinal sectional view of the chair shown in FIG. 9, and
  • FIG. 11 is a view from the direction of arrow XI in FIG.
  • Fig. 12 is a front view showing the chair when the seat is tilted in one direction
  • Fig. 13 is a front view showing the chair when the seat is tilted in the other direction.
  • FIG. 14 is a top view schematically showing the tilting rotation of the seat relative to the base.
  • the chair 3 has a seat 110 on which the user's hips can be placed, a single leg 1200 attached to the seat 110, and a leg.
  • the tilting means 1400 is located between the lower surface of the leg 1200 and the upper surface of the base 1300, and the elastic means 1140, 1440, 1440 and 1 It is composed of 4 4 0.
  • the plurality of elastic means 1410, 1420, 1430 and 1440 are arranged so as to surround the center of the seat 1100, and the upper plate 150 and the lower plate It is attached between 160.000.
  • the upper plate 1500 is fixed to the lower surface of the leg portion 1200
  • the lower plate 160 is fixed to the upper surface of the base portion 130.
  • the seat 110 is formed in a substantially disc shape, and the diameter of the seat 110 is Di.
  • Upper plate 1 5 0 0 and the lower plate 1 6 0 0 is formed in a substantially disc shape, the diameter of the upper plate 1 5 0 0 and the lower plate 1 6 0 0 is D 2.
  • the resilient means 1410, 1420, 1430 and 1440 are located on the upper surface of the base 1300 so as to surround the center of the seat 1100 Is located at each vertex of a substantially square shape between the lower plate 1 6 0 0 and the circumference of the elastic means 1 4 1 0, 1 4 2 0, 1 4 3 0 and 1 4 0 3
  • the base 1300 is formed in a substantially disc shape. Diameter parts 1 3 0 0 is D 4.
  • the upper surface of base 130 has an area large enough to surround the projection surface of base 110 on base 130.
  • the projection surface of the seat 1100 on the base 1300 is formed by elastic means 1140, 1440, 1430 and elastic means arranged on the upper surface of the base 1300. Surround 1 4 4 0.
  • Upper plate 1 5 0 0 and the diameter D 2 of the bottom plate 1 6 0 0 is larger than the diameter of the seat portion 1 1 0 0.
  • the upper surfaces of the upper plate 1500 and the lower plate 160 as intervening members surround the projection surface of the seat 1100 on the upper plate 150 and the lower plate 160. It has an area of about However, taking into consideration the design of the upper plate 1 5 0 0 and the diameter D 2 of the bottom plate 1 6 0 0 may be smaller than the diameter of the seat portion 1 1 0 0.
  • the legs 1200 are formed of, for example, a metal tube, are attached to the lower surface of the seat 110, and are substantially linear to the upper surface of the upper plate 150. Extending.
  • elastic means 1410, 1420, 144, and 1440 arranged between the lower surface of the leg 1200 and the upper surface of the base 130 are configured as follows.
  • the elastic means 1410 is an elastic body 1411 made of an elastic material such as a vibration-proof rubber, for example, as an elastically deformable material with tension, compression and bending.
  • a metal end plate 1412 is tightly fixed to the upper end surface of the elastic body 14411 by baking or the like.
  • a metal end plate 144 is tightly fixed to the lower end surface of the elastic body 14411 by baking or the like.
  • a metal external thread portion 1414 is formed so as to protrude from the center thereof.
  • a metal external thread portion 14 15 is formed so as to protrude from the center thereof.
  • the elastic body 1411, the end plates 1412 and 1413, and the male thread portions 1414 and 1415 are integrated into one part.
  • the elastic means 14431, the end plates 14432, and 14433, and the male threaded parts 144334 and 144345 are integrated in the elastic means 144430. It constitutes one part.
  • a nut 1416 with a washer is arranged on the upper plate 1500, and a male screw portion 1414 inserted into a hole of the upper plate 1500 is screwed into the nut 1416 with a washer, thereby forming the elastic body 141 1.
  • a through hole 1310 is formed in the center of the base 1300. Nut with washer 1417 through through hole 1310 1417 The other end of elastic body 141 1 is disposed on the lower surface of lower plate 1600 and is screwed into nut 1417 with a washer. Is fixed to the lower plate 1600.
  • the nut 1436 with a washer is arranged on the upper plate 1500, and the male screw portion 1434 inserted into the hole of the upper plate 1500 is screwed into the nut 1436 with the washer, so that the elastic body is formed.
  • One end of 1431 is fixed to the upper plate 1500. Nuts with a washer 1437 through the through hole 1310 S Forced S Affixed to lower plate 1600.
  • the elastic means 1420 and 1440 have the same configuration as described above.
  • Lower plate 1600 is secured to base 1300 by screws 1610, 1620, 1630 and 1640 (1620 and 1640 are not shown).
  • the leg 1200 is fixed to the upper surface of the upper plate 1500. Accordingly, each of the elastic means 1410, 1420, 1430 and 1440 is disposed and fixed between the lower surface of the leg 1200 and the upper surface of the base 1300.
  • the resilient means 1410, 1420, 1430 and 1440 are separated by an upper plate 1500 and a lower plate 1600 spaced apart from each other to surround the center of the leg 1200 on the upper surface of the base 1300. It is arranged at each vertex in a substantially square shape.
  • the plurality of adjustment holes 1510, 1520, 1530 and 1540 are large enough to insert the male thread of the elastic means, and surround the center of the leg 1200 in the upper plate 1500 and the lower plate 1600. They are formed at an interval from each other. Adjustment hole 1 510, 1520, 1 5 Elastic means 1 4 1 0, 1 4 2 0, 1 4 3 0 and 1 4 using 3 0 and 1 5 4 0
  • the mounting position of 40 can be changed.
  • the user leans forward or left to change the position of the center of gravity in the direction indicated by the arrow P in FIG.
  • the load is applied from the seat 1100 to the leg 1200, the upper plate 1500, and the elastic means 1410, 1420, 1443.
  • the elastic means at the position closest to the center of gravity is elastically deformed by compression, and the elastic means at the position farthest from the center of gravity is deformed.
  • the elastic body 1441 undergoes tensile elastic deformation.
  • the leg portion 1200 and the upper plate 1500 are inclined forward or left with respect to the base portion 130 in accordance with the elastic deformation of the plurality of elastic bodies.
  • the seat 110 is separated by the length of the leg 1200.
  • the seat 1100 can tilt and move with respect to the base 130 in a range larger than the tilt of the leg 1200 with respect to the base 130. This makes it possible to increase the tilt movement range of the seat 110 compared to a conventional chair.
  • the seat 110 is inclined by a certain angle, the seat 110 is not further inclined due to the limit of the compressive elastic deformation and the limit of the tensile elastic deformation of the elastic body.
  • the tilt movement of the seat 1 100 is free within a relatively large range according to the degree of the posture of the user. It can be changed freely.
  • the entire buttocks can be stably put on the seat 110 throughout the work. Efficiency can be improved.
  • the fatigue of the worker can be reduced.
  • each of the elastic means 1410, 1420, 1430 and 1440 is located on the upper surface of the base 1300 so as to surround the center of the seat 1100. Located above. For this reason, the seat 1100 can be tilted and moved in a large range with respect to the base 1300, and at the same time that the center of the seat 1100 moves as shown in FIG. As shown by the two-dot chain line, the seat 110 can be freely moved within a certain range with respect to the base 130. Thus, even when the chair 3 is configured using a single leg portion 1200, the seat portion 110 can be rotated around the center of the seat portion 110.
  • a stable sitting state can be obtained even when it is desired to use the chair with only the seat 110 approaching the work position according to the type of work. Since the seat 110 can be rotated, it is possible to balance the body by rotating the hips with the buttocks resting on the seat 110, and improve health such as preventing back pain It can be applied to moving equipment for driving.
  • the upper surface of the base 130 has an area surrounding the projection surface of the seat 110 onto the base 130. Therefore, the seat portion 1100 can be stably tilted and moved within a relatively large range within the area of the upper surface of the base portion 1300.
  • An upper plate 1500 and a lower plate 1600 as intervening members are arranged between the lower surface of the leg 1200 and the upper surface of the base 130 so as to surround the leg 1200. I have.
  • the plurality of elastic means 1410, 1420, 1430 and 1440 are arranged so that the upper plate 150 and the lower plate 16 surround the center of the seat 110. 0 is located at 0.
  • the upper surfaces of the upper plate 1500 and the lower plate 160 have an area that surrounds the projection surface of the seat 1100 onto the upper plate 150 and the lower plate 160. Therefore, even if a single leg 1200 is used, By arranging a plurality of elastic means 1410, 1420, 1430 and 1440 on 1100, seat 1100 can be stably tilted and moved within a relatively large range with respect to base 1300.
  • the adjusting means 1510, 1520, 1530, and 1540 are used as shown in FIG.
  • 30 and 1440 mounting positions can be changed.
  • attaching elastic means 1410, 1420, 1430 and 1440 to adjustment holes 1510, 1520, 1530 and 1540 closer to leg 1200 can increase the range of tilt movement of seat 1100 relative to base 1300. it can.
  • elastic means 1410, 1420, 1430 and 1440 are attached to the adjustment holes 1510, 1520, 1530 and 1540 farther from the leg 1200, the range of the tilt movement of the seat 110 with respect to the base 1300 can be reduced. it can.
  • FIG. 15 is a perspective view showing a chair according to Embodiment 4 of the present invention
  • FIG. 16 is a schematic longitudinal sectional view of the chair shown in FIG.
  • the chair 4 according to the fourth embodiment has only the upper plate 1500 as an intervening member, and does not have the lower plate 1600. 1420, 1430 and 1
  • It has an outer peripheral side wall surface extending downward so as to surround 440, and in that the intervening member is composed of only the upper plate 1500, and the base 300 of the first embodiment is used instead of the base 1300. Unlike the chair 3 in the third embodiment. Other configurations of the chair 4 of the fourth embodiment are the same as those of the chair 3 of the third embodiment. A predetermined gap exists between the lower edge of the outer peripheral side wall of the upper plate 1500 and the upper surface of the base 300.
  • the seat 1100 moves incline relative to the base 1300 within a range larger than the tilt movement of the leg 1200 with respect to the base 1300. Therefore, the tilting movement range of the seat 1100 can be increased as compared with a conventional chair. Further, when the seat portion 1100 is tilted by a certain angle, it does not tilt any more due to the limit of the compression elastic deformation and the limit of the tensile elastic deformation of the elastic body. The elastic and compressive elastic deformation limit of the elastic body If the seat 110 is tilted at the maximum angle, the chair 3 may fall down with the user putting his buttocks on the seat 110 and adding weight.
  • the upper plate 150 as an interposition member has an outer peripheral side wall surface extending downward, so that a lower end edge of the outer peripheral side wall surface is provided.
  • the seat 110 and the legs 1200 move incline with respect to the base 300 until they contact the upper surface of the base 300, and do not further tilt.
  • the inclination angle of the seat portion 110 with respect to the base portion 300 can be limited by the outer peripheral side wall surface of the upper plate 150 as the interposition member. Therefore, it is possible to prevent the chair 4 from inclining greatly and falling when the user adds weight to the seat 110.
  • the distance between the legs 210, 220, 230, and 240 on the upper surface of the base 300 that is, the elastic means 410, 420
  • the range of tilt movement of the seat 100 relative to the base 300 Can be expanded.
  • the distance between the legs 210, 220, 230, and 240 on the upper surface of the base 300 that is, the elastic means 410, 420, 430, and 440
  • the elastic means 410, 420, 430, and 440 By increasing the interval and disposing the elastic means at a position farther from the center of the seat 100, the range of the tilt movement of the seat 100 with respect to the base 300 can be narrowed.
  • the range of the tilt movement of the 100 with respect to the base 300 can be narrowed or widened.
  • the plurality of elastic means are arranged at each vertex of a substantially square shape, but may be arranged so as to surround at least the center of the seat, and each point on the circumference of the circle or ellipse It may be arranged at each vertex of a polygon such as a triangle, a rectangle, a pentagon or a hexagon.
  • a plurality of elastic means are arranged at each point on the circumference of the ellipse and each vertex of a polygon such as a rectangle having different side lengths, the relation between the mounting position of the elastic means and the center position of the seat is Therefore, the inclination movement of the seat with respect to the base can have directionality.
  • the seat tilts in a relatively large range in the front-back direction, and tilts in a relatively small range in the left-right direction.
  • the number of the elastic means is four. However, it is sufficient if the number of the elastic means is at least two.
  • the seat is inclined or rotated uniformly with respect to the base in the front, rear, left and right directions. For this reason, four are preferred.
  • the height H 2 as shown in FIG. 1 and FIG. 7 is a dimension for defining a predetermined tilting movement relative to the base portion of the seat, the height H i is the chair It may be changed according to the height of the seat.
  • the inclining means is configured to include a plurality of elastic means or a plurality of elastic bodies.
  • the inclining means includes a single elastic means or a single elastic body.
  • the elastic body is made of a rubber body, which is one of elastically deformable materials accompanied by tension, compression and bending. Any material can be used as long as it can be deformed, and a material showing elasticity such as a synthetic resin or a mechanical element member showing elasticity such as a spring may be used.
  • the legs are preferably formed of a metal material, but in consideration of design, the seat is preferably formed of a wooden material.
  • the seat may be appropriately configured according to the application by combining metal, wood, leather, cushioning material and the like.
  • the base is preferably formed from a material such as metal or wood, but may be formed from various materials depending on the application.
  • the shape of the seat and the base has been described as being substantially disc-shaped, but the present invention is not limited to this, and various shapes can be adopted.
  • the upper plate and the lower plate as the intervening members are preferably formed using a metal material in consideration of strength.
  • FIG. 17 is a perspective view (A) and a side view (B) showing a chair according to Embodiment 5 of the present invention.
  • the chair 5 has a seat 51 on which the user's hips can be placed, a single leg 52 attached to the seat 51, and a leg 52 attached to the leg 51.
  • a plate 55 as an intervening member disposed so as to surround the leg 52 between the lower surface of the leg 52 and the upper surface of the base 53.
  • the tilting means 54 is disposed between the lower surface of the leg 52 and the upper surface of the base 53, and is composed of a plurality of elastic means.
  • the plurality of sexual means are arranged so as to surround the center of the seat 51, and are attached between the plate 55 and the base 53.
  • the plate 55 is fixed to the lower surface of the leg 52.
  • the chair 5 has a handle 56 attached to one end of the lower surface of the seat portion 51.
  • the handle 56 can move with the tilt movement of the seat 51.
  • a footrest 57 is attached to a lower portion of the leg 52.
  • the handle 56 extends horizontally from one end of the lower surface of the seat portion 51 and extends upward at a position outside the seat portion 51.
  • the foot rest 57 extends horizontally from the opposing portions on the outer peripheral surface of the leg 52 to the outside of the leg 52.
  • the seat surface of the seat portion 51 has the shape of a saddle of a bicycle so that the user can sit on the seat and straddle the seat 56.
  • the base 53 has a substantially circular upper surface. Other configurations are the same as those of the chair 4 of the fourth embodiment.
  • the handle 5 6 By holding the hand with both hands and placing both feet on the footrest 57, the body can be stabilized so that the buttocks do not fall from the seat 51, and the rotation can be performed as if riding.
  • FIG. 18 is a perspective view (A) and a side view showing a chair according to Embodiment 6 of the present invention.
  • the chair 6 has a seat 61 on which the user's buttocks can be placed, a single leg 62 attached to the seat 61, and a chair 62 attached to the leg 62. And a plate 65 as an intervening member disposed so as to surround the leg portion 62 between the lower surface of the leg portion 62 and the upper surface of the base portion 63.
  • the tilting means 64 is disposed between the lower surface of the leg 62 and the upper surface of the base 63, and is composed of a plurality of elastic means.
  • the plurality of elastic means are arranged so as to surround the center of the seat portion 61, and are attached between the plate 65 and the base portion 63.
  • the plate 65 is fixed to the lower surface of the leg 62.
  • the chair 6 has a bar-shaped member 68 attached to one end of the upper surface of the base 63. It is attached.
  • a handle 66 is attached to the upper edge of the rod-shaped member 68. Even if the seat 61 is inclined, the handle 66 and the bar-shaped member 68 can be kept stationary.
  • a footrest 67 is attached to the lower part of the leg 62.
  • the handles 66 extend horizontally on both sides of the bar-shaped member 68.
  • the foot rest 67 extends horizontally from the opposing portions of the outer peripheral surface of the leg 62 to the outside of the leg 62.
  • the seating surface of the seat portion 61 and the upper surface of the base portion 63 are substantially circular. Other configurations are the same as those of the chair 4 of the fourth embodiment.
  • the handle 56 of the chair 5 of the fifth embodiment and the handle 66 and the bar-shaped member 68 of the chair 6 of the sixth embodiment may be formed as backrests, respectively.
  • the upper surfaces of the bases 53, 63 preferably have an area surrounding the projection surface of the seats 51, 61 onto the bases 53, 63. With such a configuration, the seats 51, 61 can be stably tilted within a relatively large range within the area of the upper surface of the bases 53, 63, thereby stabilizing during exercise. The feeling can be enhanced.
  • FIG. 19 is a perspective view (A) and a side view (B) showing a chair according to Embodiment 7 of the present invention.
  • the chair 7 has a seat 71 on which the user's buttocks can be placed, a single leg 72 attached to the seat 71, and a leg 72 attached to the seat 71.
  • a plate 75 as an intervening member disposed so as to surround the leg 72 between the lower surface of the leg 72 and the upper surface of the base 73.
  • the tilting means 74 is arranged between the lower surface of the leg 72 and the upper surface of the base 73, and is composed of a plurality of elastic means.
  • the plurality of elastic means are arranged so as to surround the center of the seat portion 71, and are attached between the plate 75 and the base portion 73.
  • the plate 75 is fixed to the lower surface of the leg 72.
  • the chair 7 according to the seventh embodiment is configured such that the distance between the seat portion 71 and the base portion 73 is relatively short. That is, the chair 7 has a seat-chair specification.
  • the seat 71 has a rectangular seating surface that is relatively long in the width direction and relatively short in the length direction.
  • Have The base 73 has a rectangular upper surface that is relatively short in the width direction and relatively long in the length direction.
  • Other configurations are the same as the chair 4 of the fourth embodiment.
  • the user places the buttocks and thighs on the upper surface of the seat 71, and sits straight with the shin placed between the lower surface of the seat 71 and the upper surface of the base 73, thereby lowering the waist and hips.
  • the weight burden on the legs can be reduced.
  • the area of the seat surface of the seat portion 71 is relatively small in consideration of use at the time of work and at the time of sitting.
  • the length of the upper surface of the base portion 73 be relatively longer than the length of the seating surface of the seat portion 71.
  • FIG. 20 is a perspective view (A) and a side view (B) showing a chair according to Embodiment 8 of the present invention.
  • chair 8 is a seat on which the user's hips can be placed.
  • the inclining means 84 is arranged between the lower surface of the leg 82 and the upper surface of the base 83, and is composed of a plurality of elastic means.
  • the plurality of elastic means are arranged so as to surround the center of the seat portion 81, and are attached between the plate 85 and the base portion 83.
  • the plate 85 is fixed to the lower surface of the leg 82.
  • a backrest portion 86 is physically attached to the seat portion 81. That is, the chair 8 has a form of a sofa specification with a backrest.
  • the seating surface of the seat portion 81 and the upper surface of the base portion 83 are rectangular. Other configurations are the same as those of the chair 4 in the fourth embodiment.
  • the back and the seat can be simultaneously tilted and moved or rocked in a low seating position, so that comfort can be improved.
  • the area of the upper surface of the base portion 83 should be relative to the area of the seat surface of the seat portion 81. It is preferable that the value is larger.
  • FIG. 21 is an exploded perspective view showing a chair according to Embodiment 9 of the present invention.
  • the chair 9 has a seat 91 on which the user's buttocks are placed, and four pipes 9 2 a, 9 2 b, 9 2 c, and 4 attached to the seat 9 1.
  • a leg 9 2 composed of 9 2 d, a base 9 3 attached to the leg 9 2, and disposed between the lower surface of the leg 9 2 and the upper surface of the base 9 3 so as to surround the leg 9 2.
  • a plate 95 as an interposed member.
  • the inclining means is disposed between the lower surface of each of the four pipes 9 2 a, 92 b, 92 c and 92 d constituting the legs 92 and the upper surface of the base 93, and four Of elastic means 94a, 94b, 94c and 94d.
  • Each of the four pipes 92a, 92b, 92c and 92d is formed, for example, of a metal tube and is attached to the lower surface of the seat 91 to be substantially linear in the horizontal direction.
  • a horizontal straight portion extending outward from the center of the seat 91, an upper straight portion connected to the horizontal straight portion and bent in the vertical direction and extending substantially linearly in the vertical direction, and connected to the vertical straight portion.
  • the plate 95 has an outer peripheral wall surrounding the four flexible means 94a, 94b, 94c and 94d to limit the angle of inclination of the seat 91 relative to the base 93.
  • An edge member 95a having a substantially V-shaped cross section is attached so as to sandwich the lower edge of the outer peripheral side wall of the plate 95 from both sides. In this manner, the member 95a is disposed so as to be interposed in the gap between the lower edge of the outer peripheral side wall of the plate 95 and the upper surface of the base 93.
  • the seat 91 is attached to each of the four pipes 92a, 92b, 92c and 92d by screws or ports 96.
  • the four elastic means 94a, 94b, 94c and 94d are attached to the base 93 and the plate 95 using flat washers 97, spring washers 98 and nuts 99. It is inserted and attached to each of the four pipes 92a, 92b, 92c and 92d.
  • FIG. 22 is a top view of the seat of the chair shown in FIG. As shown in FIG. 22, the outer periphery of the seat portion 91 of the chair 9 has four recesses 91a, 91b, 91c and 9Id. And convex portions 91 e, 91 f, 91 g, and 91 h are formed between concave portions adjacent to each other along the outer peripheral direction.
  • the user sits by straddling the convex portion 91 e and putting the thigh in the concave portions 91a and 91b. Sit by putting the thigh on the recesses 9 1 b and 9 1 c across the f, sitting by putting the thigh on the recesses 9 1 c and 9 1 d over the projection 9 1 g, or It is possible to sit on the chair 9 in any of the following modes: sit by placing the thighs on the recesses 9 1 d and 91 a over the projection 91 h.
  • the inclination movement of the seat can be freely changed within a relatively large range according to the degree of the posture of the user, so that the working efficiency is improved. It is possible to provide a chair that can perform work while relaxing and can reduce the fatigue of the worker. Further, according to the chair according to the present invention, the seat can be freely moved within a certain range until the center of the seat moves, so that only the seat can be moved according to the type of work. Even if you want to use the chair closer to the work position, you can get a stable sitting position. Further, according to the chair according to the present invention, since the seat can be rotated, it is possible to balance the body by rotating the hips with the buttocks on the seat, and to prevent back pain. It can be applied to exercise equipment for improving health such as.

Landscapes

  • Chairs Characterized By Structure (AREA)

Abstract

La présente invention concerne une chaise dont on peut faire librement varier dans une plage relativement grande le mouvement d'inclinaison de la partie siège. La chaise de l'invention (1) possède une partie siège (100), des parties pieds (210, 220, 230, 240) attachées à la partie siège (100), une partie socle (30) attachée à chacune des parties pieds (210, 220, 230, 240), et des moyens d'inclinaison (400) placés entre la surface inférieure de chacune des parties pieds (210, 220, 230, 240) et la surface supérieure de la partie socle (300). Les moyens d'inclinaison (400) comprennent des moyens élastiques (410, 420, 430, 440).
PCT/JP2004/012793 2003-09-11 2004-08-27 Chaise WO2005025378A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003-319415 2003-09-11
JP2003319415 2003-09-11

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WO2005025378A1 true WO2005025378A1 (fr) 2005-03-24

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016186839A1 (fr) * 2015-05-15 2016-11-24 Knoll, Inc. Dispositif de siège pourvu d'un mécanisme d'inclinaison

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4372606A (en) * 1980-09-29 1983-02-08 Faull James K Rocker structure for rocking chairs
JPH06504470A (ja) * 1991-01-21 1994-05-26 オプスビク, ペーター 椅子の構成配置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4372606A (en) * 1980-09-29 1983-02-08 Faull James K Rocker structure for rocking chairs
JPH06504470A (ja) * 1991-01-21 1994-05-26 オプスビク, ペーター 椅子の構成配置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016186839A1 (fr) * 2015-05-15 2016-11-24 Knoll, Inc. Dispositif de siège pourvu d'un mécanisme d'inclinaison
US9585485B2 (en) 2015-05-15 2017-03-07 Knoll, Inc. Seating device having a tilt mechanism

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