WO2005072563A1 - 椅子 - Google Patents
椅子 Download PDFInfo
- Publication number
- WO2005072563A1 WO2005072563A1 PCT/JP2005/001230 JP2005001230W WO2005072563A1 WO 2005072563 A1 WO2005072563 A1 WO 2005072563A1 JP 2005001230 W JP2005001230 W JP 2005001230W WO 2005072563 A1 WO2005072563 A1 WO 2005072563A1
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- WO
- WIPO (PCT)
- Prior art keywords
- support
- back support
- seat
- view
- posture
- Prior art date
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Classifications
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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
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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
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
- A47C1/023—Reclining or easy chairs having independently-adjustable supporting parts the parts being horizontally-adjustable seats ; Expandable seats or the like, e.g. seats with horizontally adjustable parts
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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
- A47C13/00—Convertible chairs, stools or benches
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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
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/02—Rocking chairs
- A47C3/025—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame
- A47C3/026—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame with central column, e.g. rocking office chairs; Tilting chairs
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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
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/18—Chairs or stools with rotatable seat
-
- 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
- A47C3/20—Chairs or stools with vertically-adjustable seats
- A47C3/24—Chairs or stools with vertically-adjustable seats with vertical spindle
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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
- A47C7/402—Support for the head or the back for the back adjustable in height
Definitions
- the present invention relates to a chair.
- a swivel chair in which a seat rotates horizontally.
- Some swivel chairs have a backrest and some do not.
- the seat In a swivel chair with a backrest, the seat has a generally square planar shape, and is suitable for sitting for a long time like an office chair. Since the backrest exists, the relative planar posture of the person and the chair when the person sits is always constant. Many chairs with backrests can be fitted with armrests.
- Japanese Patent Application Laid-Open No. 10-215978 discloses that a leaning device that allows a seated person to place his arms and lean forward can be horizontally rotated. ing. According to the configuration of this publication, if the occupant is tired of desk work such as operation of a personal computer, the resting force can be taken by turning the leaning device toward the chest and leaning on it.
- Patent Document 1 JP-A-10-215978
- the chair is a force S that is furniture that is in close contact with the body of the worker.
- chairs used in non-home-like places such as offices are used from the perspective of contributing to creating a free atmosphere. It can be said that development has hardly been achieved.
- the necessary conditions for a chair that contributes to the creation of a free atmosphere include the novelty and versatility of the movement and the novelty of the design so that people can use it with a kind of playfulness.
- the present invention has been made to improve such a current situation.
- the chair of the present invention has a substantially plate-shaped back support having a seat on which a person sits, a support surface on which a seated person can lean, and a back support attached at a position different from the support surface. And a back frame.
- the back support is configured such that the back surface is moved from the first movement rotating around the axis extending in the direction penetrating the support surface to the back frame, and the support surface is moved from the falling posture in which the support surface faces forward. It is mounted so that at least one of a second movement that rotates to a horizontal posture facing directly above is allowed.
- Both the first movement and the second movement of the back support in the present invention are These are novel movements that conventional chairs do not have, and these novel movements provide users with applications that conventional chairs do not have.
- the back support when the back support performs the second movement, the back support can be used as a backrest in a fallen position, while it can be used as an elbow rest or a small table in a horizontal position. It is also possible for a person to sit down in a position facing the back support and “play” by rotating the back support using the first movement.
- the ability to use the back support in a variety of ways, and the innovative movement of the back support can contribute to the creation of a relaxed environment.
- the back support is formed in an elongated shape having a longitudinal direction and a width direction when viewed from a direction facing the support surface, and the back support is formed substantially in the middle of the longitudinal direction and the width direction.
- the first motion is imparted to the back support by being attached to the back frame so as to rotate about a first axis passing through the portion.
- the back support Since the back support has an elongated shape, the back support can be changed to, for example, a portrait orientation and a landscape orientation by the first movement. For this reason, when using the back support as a backrest, the user can select the posture of the back support according to his preference and physique. In addition, when sitting in a position facing the back support and applying the back support to the abdomen or placing the elbow, the back support is in a horizontal position, so that the abdomen and elbows can be applied in a natural posture. Ease of use.
- the back support can perform both the first movement and the second movement, because the use mode of the chair increases.
- the present invention also includes an example of a structure for allowing the first movement and the second movement in the back support.
- the rotary bearing is mounted so as to freely rotate from a substantially forward position to an upward position in a side view, and the back support is attached to the rotary bearing. It is mounted so as to extend in a direction penetrating the support surface of the back support and rotate about an axis extending in a direction perpendicular to the rotation axis of the joint. In this configuration, since the joint only rotates up and down, the support structure of the back support becomes robust.
- the invention of the present application also includes an improvement regarding the shape of the seat.
- the seat is formed in an elongated shape having a longitudinal direction and a width direction in a plan view. It is supported by the legs so that it can turn horizontally about the middle part in the hand and width directions.
- the seat has an elongated shape in a plan view
- the posture relative to the back support changes by horizontally turning. That is, in addition to being able to change the position of the back support, the position of the seat can be changed, and as a result, the variation of the use mode of the chair can be greatly expanded, and the usability can be further improved.
- the back support can be positioned in front of the seated person, and an object can be placed on the back support or both elbows can be attached to the back support. If the seat has an elongated shape, it is easy to sit over the seat. In other words, it is easy to choose between sitting with both knees aligned and sitting with both knees open and straddling, and as a result, the back support can be used in various ways. You can be sure.
- the back frame is supported by a leg support in a horizontally rotatable state, and the center of rotation of the back frame coincides with the center of the leg support.
- the seat is supported by legs so as to be horizontally rotated at a position shifted horizontally from the center of rotation of the back frame.
- the back frame is freely rotatable horizontally, so that the seated person can move the back support to an arbitrary position around him without changing his posture. If the center of horizontal rotation of the seat coincides with the center of the leg post, the center of gravity of the seated person may move too far from the leg post and become unstable. By moving the occupant off the leg post, the center of gravity of the occupant can be as close to the leg post as possible. As a result, the stability of the chair can be improved.
- a horizontally pivotable intermediate support provided at an upper end of the leg support is provided, and the back frame is fixed to the intermediate support while the seat is fixed. Is mounted on a portion of the intermediate support that is displaced outward from the leg support in a plan view so as to be horizontally rotatable.
- the planar shape of the seat and the outer shape of the support surface of the back support are such that the middle part in the longitudinal direction is the narrowest constricted part, and It is formed in a gourd-like shape with incomplete circular portions continuing on both sides.
- FIG. 1 (A) is a front view of a chair according to a first embodiment
- FIG. 1 (B) is a right side view of the chair according to the first embodiment.
- FIG. 2 is a plan view of the chair of the first embodiment.
- FIG. 3 is a sectional view taken along the line II-II of FIG. 2.
- FIG. 4 is an exploded perspective view of a seat receiving portion.
- FIG. 5 is an exploded plan view of a seat receiving portion.
- FIG. 6 is a partially cutaway plan view of the seat receiving portion.
- FIG. 7 is a partially cutaway side view of the seat receiving portion.
- FIG. 8 (A) is a sectional view taken along line VIIIA-VniA of FIG. 6,
- FIG. 8 ( ⁇ ) is a sectional view taken along line ⁇ - ⁇ of FIG. 8 ( ⁇ ), and
- FIG. 8D is a cross-sectional view showing another example of the lever holding means, and
- FIG. 8D is a plan view of FIG. 8D.
- FIG. 9 is an exploded perspective view of the joint device.
- FIG. 10 is an exploded plan view of the joint device.
- FIG. 11 (A) is a plan view of the joint device
- FIG. 11 (B) is a side view of the joint device
- FIG. 11 (C) is a partially cutaway plan view of the joint device.
- Fig. 12 (A) is a longitudinal side view of the coupling device
- Fig. 12 (B) is a sectional view taken along the line ⁇ - ⁇ of Fig. 12 (A)
- Fig. 12 (C) is C-C of Fig. 12 (A).
- FIG. 3 (A) is a longitudinal side view of the coupling device showing a state where the back support cannot be shifted to the horizontal posture
- FIG. 13 (B) is a plan view of the chair.
- Fig. 14 (A) is a longitudinal side view when the back support is in a horizontal position
- Fig. 14 (B) is a cross-sectional view taken along the line II- II of Fig. 14 (A)
- Fig. 14 (C) is a plan view of the chair.
- FIG. 15 is a plan view showing an example of using a chair.
- Garden 16 is a longitudinal sectional side view of a joint device according to a second embodiment.
- FIG. 17 ( ⁇ ) is a longitudinal sectional side view of the joint device according to the third embodiment, and FIG. 17 ( ⁇ ) is a partial cross-sectional view taken along line ⁇ - ⁇ of FIG. 17 ( ⁇ ).
- FIG. 18 is a longitudinal sectional side view of a coupling device according to a fourth embodiment.
- FIG. 19 (A) is a perspective view of a joint device according to a fifth embodiment, and
- FIG. 19 (B) is a longitudinal sectional side view of the joint device according to the fifth embodiment.
- FIG. 1 to FIG. 15 show a first embodiment.
- the chair is a leg 2 with a pillar 1, a seat 3 supported by the pillar 1 so that the height can be adjusted freely, a back support 4 on which the seated human power S can lean, and a back frame to which the back support 4 is attached. 5 and be prepared.
- the leg 2 is provided with a plurality of branch legs 6 extending radially from the leg support 1 in plan view, and a caster 7 is provided at the tip of each branch leg 6.
- the pedestal 1 uses a gas cylinder in which the inner and outer cylinders are fitted up and down and relatively rotatable.In this example, the inner cylinder is made up and down, and the outer cylinder lb is made up as the fixed cylinder. are doing.
- a seat receiving portion 8 is provided between the pillar 1 and the seat 3.
- the seat receiving portion 8 includes an intermediate support (seat receiving base) 9 that is opened upward.
- the plane shape of the intermediate support 9 is a teardrop shape in which the width dimension is increased from one end to the other end while being rounded as a whole, and it is curved in a front view and in a side view. It has a boat-shaped three-dimensional shape with both ends inclined.
- the intermediate support 9 is fixed to the upper end of the elevating cylinder la at a position near the narrow end.
- a lever 10 for exposing and lifting the seat 3 is exposed outside the intermediate support 9.
- the planar shape of the seat 3 is a shape that is rounded as a whole and is long in one direction, and specifically, includes a constricted portion 3a and an incomplete circular portion 3b extending on both sides thereof. It is shaped like a gourd. Further, as shown in FIG. 2, the seat 3 is rotatably attached to a portion of the intermediate support 9 that is displaced from the pillar 1 in plan view.
- the back frame 5 is formed in an L shape having a horizontal portion 5a at a lower end, and the horizontal portion 5a is fixed to a rear portion of the intermediate support 9 by welding.
- the upright portion of the back frame 5 is located outside the turning area of the seat 3. Accordingly, the seat 3 can be rotated around the back frame 5 regardless of the position of the back frame 5. In other words, the seat 3 and the back frame 5 can be arbitrarily rotated relative to each other.
- the cross-sectional shape of the back frame 5 is hollow and circular, other cross-sectional shapes such as a hollow square and a hollow ellipse may be used.
- the back support 4 has a substantially plate-like shape whose thickness is much smaller than the area, and has a substantially flat support surface ⁇ on which a seated person can lay his / her back.
- the outer shape of the support surface is rounded and long in one direction.
- the support surface has a constricted portion 4a and an incomplete semicircular portion 4b extending on both sides (a gourd-shaped portion). )It has become.
- the back sabot 4 is smaller in size than the seat 3, but it can be of the same size.
- the back support 4 is attached to the upper end of the back frame 5 via a joint device 11. Then, the back support 4 is turned from the falling posture in which the support surface is directed forward as shown by the solid line in FIG. 1 (A), and the support surface is directed upward as shown by the alternate long and short dash line in FIGS. 1 (B) and 2.
- a motion that rotates around the first axis 13 is a first motion
- a motion that rotates around the second axis 12 is a second motion.
- the knock support 4 can be set in a vertical position or a horizontal position when the chair is viewed from the front, and in the second movement, the back support 4 falls down with the support surface facing forward.
- the posture in side view can be changed from the posture to the horizontal posture with the support surface facing up.
- Knock support 4 is in a slightly backward tilted posture when it is completely collapsed.
- a tapered receiving cylinder 14 is fixed to the intermediate support 9, and the receiving cylinder 14 is fitted to the upper end of the elevating cylinder la.
- the lifting cylinder la is provided with a push valve 15 for switching between a free state in which it can be raised and lowered and a locked state in which it cannot be raised, and the push valve 15 projects from the upper surface of the lifting cylinder la.
- the lifting cylinder la is rotatably fitted to the outer cylinder lb. Therefore, the intermediate support 9 and each member attached thereto can be freely horizontally turned around the axis of the elevating cylinder la.
- a lid-like bracket plate 16 is fixed to the intermediate support 9 by welding.
- the latter half of the bracket plate 16 is a stepped portion 16a which is lower than the front half, and the stepped portion 16a is provided with a lever receiver 18 for holding the lever 10 for operating the push valve 15 of the elevating cylinder la. Screw 19 is fixed.
- the seat 3 is attached to a portion of the bracket plate 16 away from the pillar 1 via a tubular body 20 so as to be horizontally pivotable. That is, the seat 3 is attached to the intermediate support 9 in a state where the seat 3 is eccentric from the pillar 1 by a certain dimension.
- the seat 3 is provided with a cushion 21 on a substrate 21 made of a hard material such as plywood.
- a boss 23 made of metal (or resin) and fixed in a circular shape in a plan view is fixed to the lower surface of the central portion of the substrate 21, and this boss 23 is interposed through a bush 24 made of synthetic resin. And is rotatably fitted into the cylindrical body 20.
- the boss 23 has a large-diameter portion 23 a overlapping the bracket plate 16, and a flange 24 for receiving the large-diameter portion 23 a of the boss 23 is formed at the upper end of the bush 24.
- a plurality of slits 24b opened downward are formed in a state of jumping in the circumferential direction.
- the boss body 23 is provided with a bottom plate 23b. By screwing a screw 25 penetrating from below into the bottom of the intermediate support body 9 into the bottom plate 23, the boss body 23 is held so as not to be able to escape upward.
- the upper surface of the intermediate support 9 is covered with a resin cover 26.
- the elevating operation lever 10 is manufactured using a metal round bar as a material.
- the lever 10 is arranged so as to cross the intermediate support 9 in plan view, and both ends penetrate the intermediate support 9 and extend right and left outside the intermediate support 9. It is exposed.
- a resin finger pad 27 is attached to the exposed portion of the lever 10.
- a portion of the lever 10 that overlaps with the intermediate support 9 is bent in a substantially M shape in a front view, and the left and right intermediate portions are pressed against the push valve 15. Part 1 Oa.
- a center engagement groove 28 is formed at an intermediate portion of the portion bent in a substantially M-shape, and side engagement grooves 29 are formed at both left and right portions of the lever 10 to open upward. Is formed.
- the lever receiver 18 is made of resin, and has a gutter-like portion 18a that fits tightly from above into a downwardly protruding mountain-shaped portion of the lever 10, and the upper bottom surface of the gutter-like portion 18a.
- a center engaging protrusion 30 and a side engaging protrusion 31 that are fitted into the center engaging groove 28 and the side engaging groove 29 of the lever 10 from above are respectively provided to project downward.
- the lever 10 Since the lever 10 has a bent portion fitted in the lever receiver 18, the posture is restricted and the lever 10 cannot rotate around the axis. Also, as can be understood from Fig. 8 (C). Then, even if the lever 10 is pushed or pulled in any direction, the lever 10 rotates about the position of one of the side engagement grooves 28 and the side engagement protrusion 31 as a fulcrum, and the push valve 11 It can be pushed down.
- a notch 32 is formed in the bracket plate 16 to prevent interference with the lever 10.
- the hole 33 through which the lever 10 penetrates in the intermediate support 9 is a vertically long hole to allow the lever 10 to rotate up and down.
- an escape hole 18b is formed in the flat plate portion of the lever receiver 18 to avoid interference with the lifting cylinder la.
- the lever receiver 18 and the lever 10 are accurately positioned, and in this state, the lever receiver 18 is fixed to the bracket 16 with screws 19.
- the lever 10 can be easily mounted.
- the center engaging groove 28 and the center engaging protrusion 30 are not necessarily required. It is also possible to form an engagement projection on the lever 10 and form an engagement groove on the lever receiver 18. Furthermore, the lever 18 can be made of metal. In addition, it is preferable that the lever lever holder 18 has an integral structure as in the present embodiment, however, it is also possible to hold the two force points of the lever 10 with separate lever holders. It is.
- FIGS. 8D and 8E show another example of the mounting structure of the lever 10.
- the basic form of the lever 10 and the lever receiver 18 is the same as that described above, and the feature is that both ends of the lever 10 that are exposed from the lever receiver 18 serve as retaining means for the lever 10.
- a projection 34 projecting outward in a plan view is formed by extrusion. Therefore, the pair of the grooves 28 and 29 and the projections 30 and 31 as in the example described above is not provided. Therefore, it is excellent in strength and easy to process.
- the back support 4 has a structure in which a cushion 36 is attached to a substrate 35 made of a hard material such as plywood.
- a structure in which cloths are simply stretched on the substrate 35 or a structure in which only the substrate 35 is used can be adopted.
- the coupling device 11 includes a fixed bearing 37 fixed to the upper end of the back frame 5, an auxiliary bearing 38 fitted to the fixed bearing 37, and a fixed bearing.
- a rotating bearing (rotating body) 40 rotatably mounted on a 37 and an auxiliary bearing 38 with a horizontal support shaft 39, a lock pin 41 built into the rotating bearing 40, and a lock pin 41.
- Urging A spring (compression coil spring) 42 and a receiving seat 43 fixed to the knock support 4 are provided.
- the axis of the support shaft 39 is the second axis 12, and the axis of the lock pin 41 is the first axis 13.
- the second axis 12 embodied by the support shaft 39 extends horizontally in the vicinity of the back surface at the center of the back support 4, and its extending direction is substantially the same as the tangential direction of the seat 3 in plan view. It is parallel.
- the fixed bearing 37 includes a downward boss 37a, and the boss 37a is fixed to the back frame 5 with a screw 44.
- the upper part of the fixed bearing 37 is formed in a plate-like portion 37b having a disk-shaped virtual outer shape, and the plate-like portion 37b is formed with a cutout portion 45 that opens toward the opposite side to the seat 3. are doing.
- the slit 45 extends in a range of about 90 degrees.
- the auxiliary bearing 38 is provided with two disk portions 38a overlapping the plate-shaped portion 37b of the fixed bearing 37, and the two disk portions 38a fit into the cutout portions 45 of the fixed bearing 37. They are continuously connected to each other via a connecting portion 38b.
- the outer diameter of the connecting portion 38b of the auxiliary bearing 38 is set to be smaller than the virtual outer peripheral surface of the plate-like portion 37b of the fixed bearing 37.
- a step portion 38c having an upward opening is formed.
- an engagement hole 46 that opens upward is formed by the cooperative operation of the cutout portion 45 of the fixed bearing 37 and the connecting portion 38b of the auxiliary bearing 38.
- the engaging hole 46 is formed in a rectangular shape in a plan view so that the groove width W1 in the left-right direction (axial direction of the support shaft 39) is larger than the groove width W2 in the front-rear direction. It is also possible to form the engaging hole 46 directly in the fixed bearing 37, in which case the auxiliary bearing 38 becomes unnecessary.
- the rotary bearing 40 is formed in a cylindrical shape as a whole, and its front end is a bifurcated portion 40 a which is hollowed out so as to fit into the plate-like portion 37 b of the fixed bearing 37 and the auxiliary bearing 38. ing.
- the bifurcated portion 40a is attached to a fixed bearing 37 and an auxiliary bearing 38 by a support shaft 39.
- a bolt is used as the support shaft 39, and the support shaft 39 is held by a nut 47 so as not to come off. Note that the nut 47 is held by the rotary bearing 40 so as not to rotate.
- the lock pin 41 is formed to have a different diameter so that the front side has a larger diameter, and has an engagement protrusion 48 having a substantially rectangular cross section at the front end.
- the lock pin 41 is rotatably fitted to the rotary bearing 40 so as to be rotatable and cannot be displaced rearward. Therefore, the hole 49 inside the rotary bearing 40 is also formed to have a stepped different diameter.
- the engaging projection 48 of the lock pin 41 has a rectangular cross section, while the engaging hole 46 is also rectangular, and the longitudinal dimension L of the engaging projection 48 (see FIGS. 9 and 10) However, it is slightly smaller than the groove width dimension W1 in the longitudinal direction of the engagement hole 46, and is larger than the groove width dimension W2 in the short direction of the engagement hole 46. Therefore, the lock pin 41 is rotated around its axis, so that the lock pin 41 is in a posture to be fitted in the engagement hole 46 or in a posture not to be fitted. The lock pin 41 is urged in the direction of the fixed bearing 37 by a spring 42 fitted on the small diameter portion.
- the rear end 41a of the lock pin 41 is cut out in a non-circular shape, and the rear end 41a is non-rotatably fitted into the receiving seat 43.
- the seat 43 and the lock pin 41 are fastened together with screws 50.
- the receiving seat 43 is fixed to the substrate 35 with screws 51.
- the lock pin 41 may be fixed to the receiving seat 43.
- the receiving seat 43 is formed with a cylindrical portion 43a that covers the rotary bearing 40 from outside.
- the angle at which the back support 4 rotates around the support shaft 39 depends on the movement stroke of the engagement projection 48 of the lock pin 41 (moves around the axis of the support shaft 39). Range).
- the lock pin 41 is rotatable inside the rotary bearing 40, so that the back support 4 can also be freely rotated around the axis of the lock pin 41. .
- the engagement projection 48 of the lock pin 41 can fit into the engagement hole 46 only when the engagement pin 48 is in a posture extending long parallel to the axis of the support shaft 39 (that is, a posture oblong in a front view). Like 13 However, if the engaging projection 48 is not in a posture extending long in parallel with the support shaft 39, the engaging projection 48 of the lock pin 41 will straddle the engaging hole 46 even if the back support 4 is raised, and the back support 4 Cannot be shifted to a horizontal position.
- the back support 4 Since the engaging projection 48 of the lock pin 41 has a rectangular cross-sectional shape extending in the same direction as the longitudinal direction of the back support 4, the back support 4 is viewed in a plan view as shown in FIG. The posture cannot be shifted to the horizontal posture unless the posture extends long in the tangential direction of the seat 3. In other words, the back support 4 can only fall down in the horizontal position, and the posture force can be shifted to the horizontal position.
- the back support 4 When the back support 4 is in a posture extending long in the tangential direction of the seat 3 in plan view, the back support 4 is in an area that can be stably supported by the legs 2 (ie, an area connecting the casters 7). It is within the range, so that no part of the back support 4 is subjected to a large load so that the chair does not tip over.
- the action of the engagement and disengagement between the engagement hole 46 and the lock pin 48 includes a rotation restricting function that allows the back support 4 to shift to a horizontal posture only when the front support is in a horizontally long posture, and a horizontal posture. It can be disassembled into a fall prevention lock function that keeps the vehicle from falling down in the state described above and a rotation prevention function that keeps the vehicle from rotating horizontally when in the horizontal posture. Realizing these three functions For this purpose, a rotation restricting means, a fall prevention locking means, and a horizontal turning prevention means are required, and in the embodiment of the present invention, a force in which the three means are shared by one structure. It is also possible.
- the material of the bearings 37, 38, and 40 is not particularly limited, and may be, for example, resin or metal die-cast.
- the support shaft 39 may be a pin type without using a bolt, and may be stopped with a snap ring.
- the back support 4 can be tilted to a vertical position when viewed from the side, but when functioning as a backrest, it is preferable that the back support 4 be tilted backward at a slight angle in a tight position as in this embodiment. It can be said.
- the chair described above can be used in various ways. First, looking at seat 3, A. Sit down in a landscape orientation, B. Sit down in a portrait orientation, C. Bend both knees in a landscape orientation and place left and right shins on the top of the seat There is.
- the knock support 4 includes: a. A fall position and a position behind the seated person; b. A fall position and a position near the chest of the seated person; Right or left, d. Horizontal position, behind the occupant, e. Horizontal position, in front of the occupant, f. Horizontal position, right or left of the occupant There is a usage such as positioning to.
- the combination of the use mode of AC for these seats 3 and the use mode of af for the back support 4 allows a person to use the chair in various modes.
- the back support 4 When the back support 4 is in the fall posture, the back support 4 mainly functions as a backrest.
- both the seat 3 and the back support 4 have an elongated shape, the seat 3 has a longitudinal front-rear posture and the back support 4 has a vertical longitudinal posture, and the seating point is one of the seats 3 .
- the upper body can be greatly tilted.
- the back support 4 is slender, by setting the back support 4 to a landscape orientation, The occupant can easily put one arm on the upper surface of the back support 4 while resting the back on the back support 4.
- FIG. 15 Some examples of the usage mode in a state where the back support 4 is in a horizontal posture are shown in FIG. In FIG. 15, the back support 3 is displayed in almost the same size as the seat 3.
- the back support 4 is arranged in parallel with the seat 3, and a person is sitting with his / her back against the end surface of the back support 4. That is, the back support 4 is used as a backrest. Since the constricted part 4a is present in the back support 4, the back support 4 can be used without discomfort because the vertebra of the seated person does not hit the back support 4. It is also possible to lean on the back support 4 in a horizontal position and place both elbows or one elbow behind and put it on the back support 4 as shown by the dashed line. In other words, the back support 4 can be used simultaneously for both the backrest and the elbow rest.
- the back support 4 is positioned beside the occupant, so that the back support 4 is used as an elbow rest (side breath).
- the knock support 4 is used as an elbow support
- the back support 4 can be positioned in front of a seated person, and both elbows can be applied to the back support 4.
- FIGS. 15 (C)-(E) show examples of using the back support 4 for a small table.
- the user can take notes on the back support 4, put documents, and put the notebook computer P thereon.
- FIG. 15 (E) the person is sitting on the seat 3. Since the seat 3 has the constricted portion 3a, the occupant can easily spread the left and right legs and easily straddle the seat 3 for this reason.
- the back support 4 is in a posture extending long in front of the seated person (however, as described above, this use mode cannot be adopted in the first embodiment).
- the back support 4 can be used both as a small table and as an armrest. It is also possible to use both the seat 3 and the back support 4 as a document table by placing the back support in a horizontal position without a person sitting on it.
- FIG. 16 shows a second embodiment. This embodiment is a modification of the first embodiment. It is a modification of the support support mounting structure.
- a reinforcing member 53 is fixed to the tip end surface of the rotary bearing 40 with a screw 54, and the reinforcing member 53 is provided in a hole 55 formed in the substrate 35 of the knock support 4. It is slidably fitted. Further, the reinforcing member 53 is held by the receiving seat 43 so as not to come off. Further, the lock pin 41 is non-rotatably fixed to the substrate 35 of the back support 4.
- FIG. 17 shows a third embodiment.
- the third embodiment is a modified example of the first embodiment, and is characterized by a mounting structure of the back support 4.
- the difference between the third embodiment and the first embodiment is that the engaging projection 48 of the lock pin 41 is formed in a circular cross section.
- the back support 4 can be in any horizontal posture regardless of the posture when viewed from the front in the falling posture.
- the knock support 4 can be turned horizontally in a horizontal position. Such a configuration can be made by a user's request.
- FIG. 18 shows the fourth embodiment.
- This embodiment is characterized by the joint device 11.
- the basic structure of the coupling device 11 in this embodiment is the same as that of the first embodiment.
- the difference from the first embodiment is that the lock pin 41 is non-rotatably fitted to the rotary bearing 40.
- the back support 4 is rotatably mounted on the lock pin 41.
- this embodiment when the back support 4 shifts between the falling posture and the horizontal posture, there is no restriction on the posture (direction).
- FIG. 19 shows the fifth embodiment.
- This embodiment is characterized by the joint device 11.
- the joint device 11 of this embodiment includes a fixed bearing 37, a rotary bearing 40, a support shaft 31, a lock pin 41, a spring 42, and a receiving seat 43, as in the first embodiment.
- the auxiliary bearing 38 of the first embodiment is not provided, and the fixed hole 37 is directly formed with the engagement hole 46. Has formed.
- the point that the lock pin 41 is provided with the engagement projection 48 having a rectangular cross section is the same as in the first embodiment.
- the lock pin 41 is held so as not to be able to be pulled out and relatively rotated with respect to the substrate 35 of the back support 4, and is attached by a screw 50 so as to slide in the axial direction by a small dimension.
- the fixed bearing 37 is provided with a hook 57 capable of hooking an object such as a tongue.
- the seat and the back support are not limited to the gourd shape and the circular shape as shown, but can be set to various shapes such as a substantially rectangular shape, an elliptical shape, a rectangular shape having both ends formed in an arc shape, a polygonal shape, and a circular shape. It is also possible to form the seat and the back support in different shapes. Also, the specific structures of the knock frame and the coupling device can be variously embodied as needed.
- the back support is circular or square and the back support only performs the first movement
- the back support when the back support is attached to the back frame so as to rotate at a position deviated from the center portion, the back support rotates. Can change the height. Also, you can play by turning the back support. Therefore, even if the back support does not move first, the back support does not necessarily have to be elongated.
- the height of the back support can be adjusted independently, or the distance between the seat and the back support can be adjusted.
- the back support can be folded in two.
- the invention of the present application is also applicable to a chair of a type in which legs are fixed to the floor (that is, a non-movable chair).
- the support surface of the back support may be slightly uneven or round.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05709456A EP1709889A4 (en) | 2004-01-30 | 2005-01-28 | CHAIR |
US10/587,750 US20070290539A1 (en) | 2004-01-30 | 2005-01-28 | Chair |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004024178A JP2005211468A (ja) | 2004-01-30 | 2004-01-30 | 椅子 |
JP2004-024178 | 2004-01-30 | ||
JP2004193934A JP4695353B2 (ja) | 2004-06-30 | 2004-06-30 | 椅子 |
JP2004-193934 | 2004-06-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005072563A1 true WO2005072563A1 (ja) | 2005-08-11 |
Family
ID=34829429
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/001230 WO2005072563A1 (ja) | 2004-01-30 | 2005-01-28 | 椅子 |
Country Status (3)
Country | Link |
---|---|
US (1) | US20070290539A1 (ja) |
EP (1) | EP1709889A4 (ja) |
WO (1) | WO2005072563A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USRE49499E1 (en) * | 2017-02-22 | 2023-04-25 | Famosa Corp. | Ball chair |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8181920B2 (en) * | 2006-08-07 | 2012-05-22 | E.F. Bavis & Associates, Inc. | Apparatus and methods for an equipment stand for a drive-thru employee station |
TWM325778U (en) * | 2007-06-23 | 2008-01-21 | Shuen Huang | Attachment structure for a seat back |
IT1393795B1 (it) * | 2009-04-23 | 2012-05-08 | Imarc Spa | Procedimento per realizzare una struttura di collegamento fra piantone e sedile di sedie da ufficio e struttura ottenuta con il procedimento. |
US11304528B2 (en) | 2012-09-20 | 2022-04-19 | Steelcase Inc. | Chair assembly with upholstery covering |
USD697726S1 (en) | 2012-09-20 | 2014-01-21 | Steelcase Inc. | Chair |
RU2741589C2 (ru) * | 2015-11-23 | 2021-01-27 | Рафаэль БЛАСКО АНДРЕУ | Усовершенствованное саморегулируемое устройство для поддержки спины |
US11533999B2 (en) * | 2020-07-30 | 2022-12-27 | B&Z Productions, LLC | Seat plate gas cylinder quick-release device |
US11717089B2 (en) * | 2020-10-23 | 2023-08-08 | Lost Luggage ID Limited | Multiple sitting position chair |
Citations (3)
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US4400032A (en) | 1978-04-05 | 1983-08-23 | Depolo Harry R | Eccentrically rotatable chair |
JPS61159956U (ja) * | 1985-03-27 | 1986-10-03 | ||
JPH10215978A (ja) * | 1996-12-02 | 1998-08-18 | Takumi Nozue | もたれ具付きの椅子 |
Family Cites Families (19)
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US1310250A (en) * | 1919-07-15 | Combutatiolf-chaib | ||
US645102A (en) * | 1899-09-19 | 1900-03-13 | Oscar S Jennings | Combined chair and tablet. |
US693685A (en) * | 1900-02-27 | 1902-02-18 | George L Case | Back for stools. |
US893016A (en) * | 1904-05-05 | 1908-07-14 | Frank Ritter | Head-rest for chairs. |
US1008456A (en) * | 1910-08-27 | 1911-11-14 | Jacob R Etter | Head-rest for chairs. |
US2486468A (en) * | 1944-11-29 | 1949-11-01 | Freedman Harry | Combination table and chair |
US2702584A (en) * | 1954-02-15 | 1955-02-22 | Mcfarlin | Stool |
US2882957A (en) * | 1956-11-06 | 1959-04-21 | Frank F Anderson | Combination lawn bench and table |
US3220765A (en) * | 1964-06-14 | 1965-11-30 | Hoffmann David | Chair with attached table |
US4533178A (en) * | 1979-11-19 | 1985-08-06 | Polo Harry R De | Eccentrically rotatable chair |
DE3260379D1 (en) * | 1981-01-27 | 1984-08-23 | Marcel Ramond | Universal, transformable and adaptable work-bench allowing specific, multiple and functional applications |
US5186519A (en) * | 1990-11-15 | 1993-02-16 | Larson John E | Workplace chair |
US5332287A (en) * | 1992-06-05 | 1994-07-26 | Whitmyer Biomechanix, Inc. | Articulating headrest |
DE19533069A1 (de) * | 1995-09-07 | 1997-03-20 | Heitlinger Karl Leo | Stuhl |
US5967610A (en) * | 1998-01-26 | 1999-10-19 | Lin; Chen-Da | Chair with swivel seat and backrest |
US6082815A (en) * | 1998-12-23 | 2000-07-04 | Johnson Controls Technology Company | Vehicle seat assembly with multiple axis pivoting tray table |
US6523895B1 (en) * | 1999-02-05 | 2003-02-25 | Davis Furniture Industries, Inc. | Ergonomic chair |
NL1013253C2 (nl) * | 1999-10-08 | 2001-04-10 | Ergodynamics Holding B V | Combinatie van een door een gestel ondersteunde zitting en rugleuning. |
US7159940B1 (en) * | 2005-07-25 | 2007-01-09 | Jerry Mac Atkins | Eccentrically rotatable swivel seat device |
-
2005
- 2005-01-28 EP EP05709456A patent/EP1709889A4/en not_active Withdrawn
- 2005-01-28 WO PCT/JP2005/001230 patent/WO2005072563A1/ja active Application Filing
- 2005-01-28 US US10/587,750 patent/US20070290539A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4400032A (en) | 1978-04-05 | 1983-08-23 | Depolo Harry R | Eccentrically rotatable chair |
JPS61159956U (ja) * | 1985-03-27 | 1986-10-03 | ||
JPH10215978A (ja) * | 1996-12-02 | 1998-08-18 | Takumi Nozue | もたれ具付きの椅子 |
Non-Patent Citations (1)
Title |
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See also references of EP1709889A4 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USRE49499E1 (en) * | 2017-02-22 | 2023-04-25 | Famosa Corp. | Ball chair |
Also Published As
Publication number | Publication date |
---|---|
EP1709889A1 (en) | 2006-10-11 |
US20070290539A1 (en) | 2007-12-20 |
EP1709889A4 (en) | 2008-04-23 |
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