EP2630894A1 - Chair with armrest - Google Patents
Chair with armrest Download PDFInfo
- Publication number
- EP2630894A1 EP2630894A1 EP11834221.1A EP11834221A EP2630894A1 EP 2630894 A1 EP2630894 A1 EP 2630894A1 EP 11834221 A EP11834221 A EP 11834221A EP 2630894 A1 EP2630894 A1 EP 2630894A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- armrest
- chair
- seat
- support base
- fitting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 230000007423 decrease Effects 0.000 claims description 8
- 210000002414 leg Anatomy 0.000 description 6
- 238000005452 bending Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 210000001217 buttock Anatomy 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/54—Supports for the arms
-
- 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
- A47C7/54—Supports for the arms
- A47C7/546—Supports for the arms of detachable type
-
- 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
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
- A47C31/12—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons
- A47C31/126—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons for chairs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/14—Standing-up or sitting-down aids
Definitions
- the present invention relates to a chair with an armrest, and particularly relates to a chair with an armrest in which a rear part of a seat is lifted in an unused state, the seat guides a sitting by coming into contact with buttocks of a person seated and rotating to a nearly horizontal position with the buttocks when the person seated is sitting, and the rear part of the seat is lifted to assist in standing up when the person seated is standing up.
- a chair which rotatably supports a seat between an unused position which is inclined in a rear upward direction with respect to a lower part member of the chair, and a usage position which is horizontal or inclined in a rear downward direction, includes an impelling unit that impels the seat toward the unused position, and includes a backrest at a rear part of the seat (for example, see Patent Literature 1).
- an armrest is connected to a seat (for example, see Patent Literature 2).
- the present invention is conceived in view of the above problem, and an object of the invention is to provide a chair with an armrest capable of safely using the armrest when a rear part of a seat rotates.
- the above problem is solved as below.
- (1) It includes: a support base supported by a leg; a seat that is pivotally fixed to the support base using an axle extending in a left and right direction, a rear part of the seat being rotatable upward and downward; an impelling unit that is provided at the support base and impels the seat at the rear of the axle upward; and an armrest in which a lower part is connected to the support base, and an upper part stands upward from an exterior side of the seat.
- a height of the armrest connected to the support base does not change even when the rear part of the seat rotates upward or downward. Accordingly, the armrest does not come into contact with a top plate of a desk and the like when a person seated stands up from the seat and thus, a chair may be safely used.
- the support base has a shape that is spread forward in planar view and is inclined in a front upward in side view, and the armrest is connected to a lateral side in a front part of the support base.
- a horizontal distance between a portion where a person seated puts his elbow in the armrest and a connection portion with respect to the support base of the armrest may be relatively shortened and thus, a bending moment applied to the connection portion with the support base of the armrest may be reduced when a load is applied to the armrest by the person seated. As such, it is possible to prevent the armrest from deviating from the support base.
- the armrest since the armrest is connected to the front part which is above a rear part of the support base, a vertical length of the armrest may be shortened when compared to a case where the armrest is connected to the rear part of the support base.
- the seat is pivotally fixed to a front part positioned above a rear part of the support base, and the armrest is connected to a portion behind the axle in the support base.
- the armrest since the armrest may be connected to a portion separated from the axle of the support base, it is possible to enhance the strength by forming the connection portion using a thick member. In this way, it is possible to prevent the armrest from deviating from the support base.
- the armrest includes an armrest fulcrum that has an inward L shape in planar view, and an elbow pad member fixed to an upper end surface of the armrest fulcrum, and the armrest fulcrum passes from the support base to a lower part of the seat and stands upward from an exterior side of the seat.
- the armrest connected to the support base may be separated from a lower surface and a side surface of the seat, it is possible to prevent the armrest from disturbing a rotation of the seat.
- Fitting convex portions divided into two-pronged ends are provided to one of an attachment target portion of the chair that attaches the armrest positioned at a side of the seat and an attachment portion attached to the attachment target portion of the armrest, fitting concave portions divided into two-pronged ends are provided to the other one, a width between external surfaces in the fitting convex portions gradually decreases toward a tip of the fitting convex portions, a width between internal surfaces in the fitting concave portions gradually decreases toward the inside of the fitting convex portions, the pair of the fitting convex portions and a reentrant portion positioned between the pair of the fitting convex portions are fitted to the pair of the fitting concave portions and a protrusion positioned between the pair of the fitting concave portions, and the attachment portion and the attachment target portion are fastened by a fastening unit from a fitting direction of the fitting convex portions and the fitting concave portions.
- the attachment target portion of the chair is provided at a portion where a width of a component, whose width increases toward a front or a rear in planar view, is increased.
- a screw hole is provided from an apical surface of the protrusion positioned between the pair of the fitting concave portions toward a basal portion of the protrusion, a screw through hole is provided on a bottom surface of the reentrant portion positioned between the pair of the fitting convex portions, and a screw passing through the screw through hole is screwed to the screw hole, thereby fastening the attachment portion of the armrest to the attachment target portion of the chair.
- a guard portion that comes into contact with a neighboring portion of the attachment target portion in the chair is provided around the attachment portion in the armrest.
- a height of an armrest connected to a support base does not change when a rear part of a seat rotates upward or downward, it is possible to safely use the armrest.
- a chair with an armrest includes a leg body 3 that includes five leg rods 2 which are provided in a radial form and are provided with casters 1 at tips.
- An extendable post 4 provided with a gas spring (not illustrated) is stood at a center of the leg body 3, and a rear part of a support base 5 which faces forward is fixed to a top of the post 4.
- the support base 5 forms a shallow dish of a triangular shape in planar view that is spread forward (see FIG. 5 ), and is inclined in a front upward in side view as illustrated in FIG. 2 .
- the support base 5 has an upward U-shape when viewed from the front, and opens forward and thus, it is easy to insert a member, a tool, and the like from the front as well as a side or a rear during an operation of attaching a member to the support base 5.
- a seat 6 includes a seat board 7 made of synthetic resins, and a cushion material 8 attached to a top face thereof, and is rotatable about an axle 9 to an unused position which is inclined in a rear upward and a usage position which is horizontal or inclined in a rear downward direction as illustrated in FIG. 3 by pivotally fixing both sides of a front end of the seat board 7 to both sides a front end of the support base 5, respectively, using the axle 9 extending in a left and right direction. It is preferable that the rotation range be about 15 degrees.
- the seat 6 is normally impelled upward toward the unused position by an impelling unit 10.
- FIG. 2 front parts of portions formed by bending forward both sides of a lower part of a backrest 11 are pivotally fixed to both sides of a rear part of the seat board 7, respectively, using a spindle 12 extending in the left and right direction.
- the backrest 11 is rotatable about the spindle 12 to a standing position that is directed nearly upward as illustrated in FIGS. 2 and 3 , and to a backward tilting position illustrated in FIG. 4 .
- a specific structure of the backrest 11 and a pivotally fixed portion thereof are not directly related to the present invention and thus, detailed illustration and description thereof will not be presented.
- the rear part of the support base 5 is connected to a portion lower than the spindle 12 of the backrest 11 through a pushing lever 13 that extends in a front and back direction and may elastically extend and contract.
- a pushing lever 13 that extends in a front and back direction and may elastically extend and contract.
- the backrest 11 maintains a standing state.
- the pushing lever 13 elastically contracts, the backrest 11 may be tilted backward as illustrated in FIG. 4 by resisting an elastic restoring force of the pushing lever 13.
- an armrest 14 is connected to a portion, which is at a rear of the axle 9, of both lateral sides 5a in a front part of the spread support base 5.
- the armrest 14 includes an armrest fulcrum 15 that has an inward L shape in front view by passing from the support base 5 to a lower part of the seat 6 and standing upward from an exterior side of the seat 6, and a soft elbow pad (elbow pad member) 16 fixed to a top of the armrest fulcrum 15.
- a portion of the armrest fulcrum 15 standing from a side of the seat 6 forms a closed loop of a substantially triangular shape in which a width in the front and back direction gradually increases upward in side view.
- a rear face of an upper portion of the armrest fulcrum 15 inclines in a rear upward on a substantially similar curved surface to that of a front face of a lateral portion of the backrest 11 in side view.
- An upper portion of the armrest 14 may have an arbitrary shape such as a downward L shape in side view, not being limited to a closed loop shape in side view.
- an attachment structure of the armrest 14 (armrest fulcrum 15) in the chair with an armrest will be described with reference to FIGS. 6 and 7 .
- an attachment portion 17 used to attach the armrest 14 to the support base 5 is provided at a tip of a lower part facing inward of the armrest fulcrum 15 in the armrest 14, and an attachment target portion 18 that attaches the attachment portion 17 of the armrest 14 is provided on the lateral side 5a of the front part of the spread support base 5.
- a pair of fitting convex portions 17a and 17b divided into two-pronged ends in the front and back direction are provided at the attachment portion 17 of the armrest 14, and a reentrant portion 17c is provided between the pair of fitting convex portions 17a and 17b.
- the fitting convex portions 17a and 17b form a quadrangular prism in which a tip narrows.
- a width between external surfaces of an upper and lower part, and a width between external surfaces of a front and rear part of the fitting convex portions 17a and 17b gradually decrease toward a tip of the fitting convex portions 17a and 17b, and the external surfaces of the upper and lower part and the external surfaces of the front and rear part are in tapered shapes.
- a width between internal surfaces of a front and rear of the reentrant portion 17c positioned between the fitting convex portions 17a and 17b gradually decreases toward the inside, and the internal surfaces of the front and rear are in inverse tapered shapes opposite to the external surfaces of the fitting convex portions 17a and 17b.
- a reentrant of the reentrant portion 17c is shallower than a maximum protrusion size of the fitting convex portions 17a and 17b.
- Widths between internal surfaces of a upper and lower part, and a front and rear of fitting concave portions 18a and 18b gradually decrease toward the inside of fitting concave portions 18a and 18b, and a width between external surfaces of a front and rear of a protrusion 22 positioned between the fitting concave portions 18a and 18b gradually decreases toward a tip of the protrusion 22.
- An external surface of the protrusion 22 is in an inverse tapered shape opposite to the internal surfaces of the fitting concave portions 18a and 18b.
- a protrusion size of the protrusion 22 is less than a maximum reentrant size of the concave portions 18a and 18b.
- An apical surface of the protrusion 22 is provided with a screw hole 23 that passes through the support base 5 to reach an internal surface thereof toward a basal portion of the protrusion 22.
- a lower surface in the attachment portion 17 of the armrest fulcrum 15 is provided with a concave portion 19, and a bottom surface of the concave portion 19 is provided with a screw through hole 20 that passes through the armrest fulcrum 15 to reach a bottom surface of the reentrant portion 17c.
- a guard portion 24 that comes into contact with a neighboring portion in the attachment target portion 18 of the support base 5 is provided.
- the rear part of the seat 6 is raised upward by an added force of the impelling unit 10 in the unused state illustrated in FIG. 2 , the seat 6 is positioned at the unused position which is inclined in a rear upward, and the backrest 11 is maintained at the standing position that is directed nearly upward by an extension of the pushing lever 13.
- a void where a hand is not squeezed when a person who is seated moves the hand backward is provided between the rear face of the upper portion of the armrest fulcrum 15 in the armrest 14 and the front face of the lateral portion of the backrest 11 in planar view.
- voids are provided between the armrest fulcrums 15 and 15 in the right and left armrests 14 and 14, and a lower surface and side surface of the seat 6.
- the armrest 14 does not inhibit the seat 6 from rotating.
- the seat 6 rotates to the usage position illustrated in FIG. 3 by resisting an added force of the impelling unit 10 due to a load of the person, and the person may promptly take an appropriate posture of having a seat.
- the backrest 11 attached to the seat 6 moves downward and backward by resisting an added force of the pushing lever 13.
- the rear face of the armrest 14 is inclined in a rear upward and thus, a gap between the rear face and the backrest 11 increases toward the lower part of the armrest 14 where a hand or clothes of the person seated frequently comes close when the backrest 11 moves downward and backward.
- the seat 6 When the person seated is about to stand up from the seated state illustrated in FIG. 3 , the seat 6 is impelled to rotate upward toward the unused position by the impelling unit 10, and may assist the person seated in standing up.
- the seat 6 and the backrest 11 moves to the unused position as illustrated in FIG. 2 , but the armrest 14 is connected to the support base 5 and thus, a height thereof does not change.
- a gap between the armrest 14 and the top plate of the desk does not change, and the armrest 14 does not come into contact with the top plate and thus, the armrest 14 may be used safely.
- a fitting convex portion may be provided at the attachment target portion 18 of the chair 5, and a fitting concave portion may be provided at the attachment portion 17 of the armrest 14.
- the armrest 14 may be attached to any component such as a seat, a backrest, and a backrest supporting lever of a chair, not being limited to the support base 5. In this case, when the armrest 14 is attached to a member whose width increases toward a front or a rear in planar view, it is preferable that the armrest 14 be attached to a portion where the width is increased.
- flexures 15a and 15b are provided between an upper side portion and a front side portion, and between the upper side portion and a rear side portion in an upper portion of the closed loop of the armrest fulcrum 15, respectively.
- a top of the armrest fulcrum 15 is provided with a concave portion 25 in which an opening area has nearly the same size as that of the elbow pad 16, and a front end reaches half way of the flexure 15a, and the concave portion 25 forms an elbow pad attachment portion 26.
- the elbow pad 16 has a thin plate shape which is slim in the front and back direction, and a front part thereof is provided with a flexure 16a that is curved obliquely downward.
- the elbow pad 16 is formed as an integral unit of a soft member 16b and a hard member 16c.
- a rear end and left and right internal surfaces of a rear part of the concave portion 25 in the armrest fulcrum 15 are provided with hook type engaged pieces 26a to 26c (see FIG. 13 ), opening forward and inward, in which an upper side and a rear side are blocked.
- Left and right internal surfaces in a front part of the concave portion 25 are provided with concave portions (engaging holes) 26d and 26e (see FIG. 14 ) which are blocked forward and in the front and back direction and are opened inward.
- a front end portion of the concave portion 25 is provided with a concave portion 26f that opens upward.
- the concave portion 26f is provided at the flexure 15a in the front part of the armrest fulcrum 15 and thus, is positioned below the engaged pieces 26a to 26c.
- a rear end and both sides of a rear part of an outer periphery 27 of the elbow pad 16 are provided with hook type engaging pieces 27a to 27c (see FIG. 13 ) that protrudes backward.
- both left and right sides of a front part are provided with elastic engaging pieces 27d and 27e (see FIG. 14 ) which protrudes toward external sides in a horizontal direction and may be elastically deformed.
- a front end portion is provided with a convex portion 27f which protrudes downward. The convex portion 27f is provided at the flexure 16a of the elbow pad 16 and thus, is positioned below the engaging pieces 27a to 27c.
- the elbow pad 16 when the elbow pad 16 is attached to the armrest fulcrum 15, the elbow pad 16 is positioned slightly in front of a position confronted with the elbow pad attachment portion 26, and is placed on top of the armrest fulcrum 15. Then, as illustrated in FIGS. 12 and 13 , when the elbow pad 16 is slid backward, the engaging pieces 27a to 27c of the elbow pad 16 are engaged with the engaged pieces 26a to 26c of the armrest fulcrum 15 from the front side.
- the attachment structure of the elbow pad merely by engaging the engaging pieces 27a to 27c of the rear part and the convex portion 27f of the front part in the elbow pad 16 with the engaged pieces 26a to 26c and the concave portion 26f in the elbow pad attachment portion 26 of the armrest fulcrum 15, it is possible to easily attach the elbow pad 16 to the armrest fulcrum 15.
- the attachment structure may be embodied by reversing the front and rear directions of the armrest fulcrum 15 and the elbow pad 16.
- a lower surface of the elbow pad 16 may be provided with elements, similar to the concave portion 25, the engaged pieces 26a to 26c, the concave portions 26d to 26f, and the like in the armrest fulcrum 15, which are flipped from top to bottom, and the elbow pad attachment portion 26 of the armrest fulcrum 15 may be provided with elements, similar to the engaging pieces 27a to 27c, the elastic engaging pieces 27d and 27e, the convex portion 27f, and the like in the lower surface of the elbow pad 16, which are flipped from top to bottom.
- a rear part or a front part of one of the elbow pad attachment portion 26 on a top of the armrest 14 and the elbow pad 16 is provided with the hook type engaged piece 26a opening forward or backward; the front part or the rear part is provided with the concave portion 26f opening in the upward and downward direction; the hook type engaging piece 27a opening backward or forward is provided at a position facing the engaged piece 26a of the other one of the elbow pad attachment portion 26 and the elbow pad 16; a position facing the concave portion 26f is provided with the convex portion 27f which protrudes in the upward and downward direction; the engaging piece 27a is engaged with the engaged piece 26a; and the convex portion 27f is fitted to the concave portion 26f, thereby attaching the elbow pad 16 to the top of the armrest 14.
- the concave portion 26f and the convex portion 27f below the engaged piece 26a and the engaging piece 27a it is possible to fit the convex portion 27f to the concave portion 26f after engaging the engaging piece 27a with the engaged piece 26a and thus, it is possible to further facilitate an attachment operation of the elbow pad 16.
- the flexure 15a that is curved downward at the front part in the elbow pad attachment portion 26 of the armrest 14, and providing the concave portion 26f or the convex portion 27f in the flexure 15a, it is possible to provide the concave portion 26f and the convex portion 27f below the engaged piece 26a and the engaging piece 27a with a simple configuration.
- the front part of the elbow pad 16 may not be greatly lifted when the elbow pad 16 is slid backward to engage the rear part of the elbow pad 16 with the elbow pad attachment portion 26 of the armrest fulcrum 15. That is, merely by sliding the elbow pad 16 backward while the elbow pad 16 is placed above the elbow pad attachment portion 26 so as to be deviated, and engaging the rear part of the elbow pad 16 with the elbow pad attachment portion 26, and then pressing the front part of the elbow pad 16 downward, it is possible to easily engage the front part of the elbow pad 16 with the elbow pad attachment portion 26. Accordingly, an attachment operation of the elbow pad 16 is facilitated.
- the elastic engaging pieces 27d and 27e of the elbow pad 16 are engaged with the concave portions 26d and 26e of the armrest fulcrum 15 by an elastic restoring force and thus, a width thereof in the upward and downward direction may be decreased. As such, the elbow pad 16 may be made thin as a whole. Further, it is possible to reliably attach the elbow pad 16 to the armrest 14.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
Description
- The present invention relates to a chair with an armrest, and particularly relates to a chair with an armrest in which a rear part of a seat is lifted in an unused state, the seat guides a sitting by coming into contact with buttocks of a person seated and rotating to a nearly horizontal position with the buttocks when the person seated is sitting, and the rear part of the seat is lifted to assist in standing up when the person seated is standing up.
- As this type of chair, there is a chair which rotatably supports a seat between an unused position which is inclined in a rear upward direction with respect to a lower part member of the chair, and a usage position which is horizontal or inclined in a rear downward direction, includes an impelling unit that impels the seat toward the unused position, and includes a backrest at a rear part of the seat (for example, see Patent Literature 1).
On the other hand, there is a chair in which an armrest is connected to a seat (for example, see Patent Literature 2). -
- Patent Literature 1: Japanese Laid-open Patent Publication No.
2010-104463 - Patent Literature 2: Japanese Patent No.
3156115 - It is desirable to provide an armrest to the chair in which a rear part of a seat rotates between an unused state and a usage state disclosed in
Patent Literature 1. However, in a case where an armrest is attached to a seat asPatent Literature 2 in the chair ofPatent Literature 1, when a person seated stands up from a state in which the person is seated and the armrest is put under a desk, the armrest moves upward due to an upward rotation of the rear part of the seat, and the armrest may come into contact with a top plate of the desk. - The present invention is conceived in view of the above problem, and an object of the invention is to provide a chair with an armrest capable of safely using the armrest when a rear part of a seat rotates.
- According to the invention, the above problem is solved as below.
(1) It includes: a support base supported by a leg; a seat that is pivotally fixed to the support base using an axle extending in a left and right direction, a rear part of the seat being rotatable upward and downward; an impelling unit that is provided at the support base and impels the seat at the rear of the axle upward; and an armrest in which a lower part is connected to the support base, and an upper part stands upward from an exterior side of the seat. - In this configuration, a height of the armrest connected to the support base does not change even when the rear part of the seat rotates upward or downward. Accordingly, the armrest does not come into contact with a top plate of a desk and the like when a person seated stands up from the seat and thus, a chair may be safely used.
- In the above (1), the support base has a shape that is spread forward in planar view and is inclined in a front upward in side view, and the armrest is connected to a lateral side in a front part of the support base.
- In this configuration, a horizontal distance between a portion where a person seated puts his elbow in the armrest and a connection portion with respect to the support base of the armrest may be relatively shortened and thus, a bending moment applied to the connection portion with the support base of the armrest may be reduced when a load is applied to the armrest by the person seated. As such, it is possible to prevent the armrest from deviating from the support base. In addition, since the armrest is connected to the front part which is above a rear part of the support base, a vertical length of the armrest may be shortened when compared to a case where the armrest is connected to the rear part of the support base.
- (3) In the above (2), the seat is pivotally fixed to a front part positioned above a rear part of the support base, and the armrest is connected to a portion behind the axle in the support base.
- In this configuration, since the armrest may be connected to a portion separated from the axle of the support base, it is possible to enhance the strength by forming the connection portion using a thick member. In this way, it is possible to prevent the armrest from deviating from the support base.
- In any one of the above (1) to (3), the armrest includes an armrest fulcrum that has an inward L shape in planar view, and an elbow pad member fixed to an upper end surface of the armrest fulcrum, and the armrest fulcrum passes from the support base to a lower part of the seat and stands upward from an exterior side of the seat.
- In this configuration, since the armrest connected to the support base may be separated from a lower surface and a side surface of the seat, it is possible to prevent the armrest from disturbing a rotation of the seat.
- (5) Fitting convex portions divided into two-pronged ends are provided to one of an attachment target portion of the chair that attaches the armrest positioned at a side of the seat and an attachment portion attached to the attachment target portion of the armrest, fitting concave portions divided into two-pronged ends are provided to the other one, a width between external surfaces in the fitting convex portions gradually decreases toward a tip of the fitting convex portions, a width between internal surfaces in the fitting concave portions gradually decreases toward the inside of the fitting convex portions, the pair of the fitting convex portions and a reentrant portion positioned between the pair of the fitting convex portions are fitted to the pair of the fitting concave portions and a protrusion positioned between the pair of the fitting concave portions, and the attachment portion and the attachment target portion are fastened by a fastening unit from a fitting direction of the fitting convex portions and the fitting concave portions.
- In this configuration, since external surfaces of a pair of the fitting convex portions divided into two-pronged ends in one of the attachment target portion of the chair and the attachment portion of the armrest, and internal surfaces of a pair of the fitting concave portions divided into two-pronged ends in the other one are formed in tapered shapes inclined in the same direction, the fitting convex portions come into contact with the fitting concave portions on a large area. Accordingly, a backlash is not generated between the attachment portion of the armrest and the attachment target portion of the chair, and it is possible to reduce a shear stress generated in the attachment portion of the armrest when a load is applied to the armrest by a person seated.
- (6) In the above (5), the attachment target portion of the chair is provided at a portion where a width of a component, whose width increases toward a front or a rear in planar view, is increased.
- In this configuration, since a horizontal distance between the attachment portion and a portion where a load is applied by a person seated of an armrest positioned at a side of the seat may be shortened, it is possible to reduce a bending moment applied to the attachment portion of the armrest when a load is applied to the armrest by the person seated.
- (7) In the above (5) or (6), a screw hole is provided from an apical surface of the protrusion positioned between the pair of the fitting concave portions toward a basal portion of the protrusion, a screw through hole is provided on a bottom surface of the reentrant portion positioned between the pair of the fitting convex portions, and a screw passing through the screw through hole is screwed to the screw hole, thereby fastening the attachment portion of the armrest to the attachment target portion of the chair.
- In this configuration, it is possible to increase a length of the screw that fastens the attachment portion of the armrest and the attachment target portion of the chair, and it is possible to strengthen a fastening power by the screw.
- (8) In the above (5), a guard portion that comes into contact with a neighboring portion of the attachment target portion in the chair is provided around the attachment portion in the armrest.
- In this configuration, it is possible to prevent an interlocking force between the attachment portion of the armrest and the attachment target portion of the chair from being excessively large.
- According to the present invention, since a height of an armrest connected to a support base does not change when a rear part of a seat rotates upward or downward, it is possible to safely use the armrest.
-
-
FIG. 1 is a front view of a chair with an armrest in an unused state according to an embodiment of the present invention. -
FIG. 2 is a side view of the chair with an armrest illustrated inFIG. 1 . -
FIG. 3 is a side view of the chair with an armrest illustrated inFIG. 1 in a usage state. -
FIG. 4 is a side view when a backrest is tilted backward in the usage state of the chair with an armrest illustrated inFIG. 1 . -
FIG. 5 is an enlarged plan view illustrating a coupled structure of a support base and the armrest when seen from V-V line ofFIG. 2 . -
FIG. 6 is a VI-VI line enlarged cross-sectional view ofFIG. 2 . -
FIG. 7 is an enlarged perspective view of an attachment portion of the armrest and an attachment target portion of the support base ofFIG. 2 when seen from a slant rear. -
FIG. 8 is an enlarged exploded perspective view of an elbow pad attachment portion and an elbow pad of the armrest when seen from a slant front. -
FIG. 9 is an enlarged perspective view of the elbow pad attachment portion when seen from a slant lower part at a rear. -
FIG. 10 is an enlarged longitudinal cross-sectional side view illustrating the armrest and the elbow pad being disassembled. -
FIG. 11 is an enlarged longitudinal cross-sectional side view illustrating a state in which the elbow pad is placed a little ahead of the elbow pad attachment portion. -
FIG. 12 is an enlarged longitudinal cross-sectional side view illustrating a state in which the elbow pad is attached to the elbow pad attachment portion. -
FIG. 13 is a XIII-XIII line enlarged cross-sectional view ofFIG. 12 . -
FIG. 14 is a XIV-XIV line enlarged cross-sectional view ofFIG. 12 . - Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.
As illustrated inFIGS. 1 and2 , a chair with an armrest includes aleg body 3 that includes fiveleg rods 2 which are provided in a radial form and are provided withcasters 1 at tips. Anextendable post 4 provided with a gas spring (not illustrated) is stood at a center of theleg body 3, and a rear part of asupport base 5 which faces forward is fixed to a top of thepost 4. - The
support base 5 forms a shallow dish of a triangular shape in planar view that is spread forward (seeFIG. 5 ), and is inclined in a front upward in side view as illustrated inFIG. 2 . In addition, as illustrated inFIG. 1 , thesupport base 5 has an upward U-shape when viewed from the front, and opens forward and thus, it is easy to insert a member, a tool, and the like from the front as well as a side or a rear during an operation of attaching a member to thesupport base 5. - As illustrated in
FIG. 2 , aseat 6 includes aseat board 7 made of synthetic resins, and acushion material 8 attached to a top face thereof, and is rotatable about an axle 9 to an unused position which is inclined in a rear upward and a usage position which is horizontal or inclined in a rear downward direction as illustrated inFIG. 3 by pivotally fixing both sides of a front end of theseat board 7 to both sides a front end of thesupport base 5, respectively, using the axle 9 extending in a left and right direction. It is preferable that the rotation range be about 15 degrees.
Theseat 6 is normally impelled upward toward the unused position by animpelling unit 10. - As illustrated in
FIG. 2 , front parts of portions formed by bending forward both sides of a lower part of abackrest 11 are pivotally fixed to both sides of a rear part of theseat board 7, respectively, using aspindle 12 extending in the left and right direction. Thebackrest 11 is rotatable about thespindle 12 to a standing position that is directed nearly upward as illustrated inFIGS. 2 and3 , and to a backward tilting position illustrated inFIG. 4 . A specific structure of thebackrest 11 and a pivotally fixed portion thereof are not directly related to the present invention and thus, detailed illustration and description thereof will not be presented. - As illustrated in
FIG. 2 , the rear part of thesupport base 5 is connected to a portion lower than thespindle 12 of thebackrest 11 through a pushinglever 13 that extends in a front and back direction and may elastically extend and contract.
During a downward rotation of theseat 6 from the unused position to the usage position (seeFIG. 3 ), a lower end portion of thebackrest 11 is pushed backward by the pushinglever 13, and thebackrest 11 maintains a standing state. In addition, when the pushinglever 13 elastically contracts, thebackrest 11 may be tilted backward as illustrated inFIG. 4 by resisting an elastic restoring force of the pushinglever 13. - As illustrated in
FIGS. 2 and5 , anarmrest 14 is connected to a portion, which is at a rear of the axle 9, of bothlateral sides 5a in a front part of thespread support base 5. As illustrated inFIG. 1 , thearmrest 14 includes anarmrest fulcrum 15 that has an inward L shape in front view by passing from thesupport base 5 to a lower part of theseat 6 and standing upward from an exterior side of theseat 6, and a soft elbow pad (elbow pad member) 16 fixed to a top of thearmrest fulcrum 15. - As illustrated in
FIG. 2 , a portion of thearmrest fulcrum 15 standing from a side of theseat 6 forms a closed loop of a substantially triangular shape in which a width in the front and back direction gradually increases upward in side view. A rear face of an upper portion of thearmrest fulcrum 15 inclines in a rear upward on a substantially similar curved surface to that of a front face of a lateral portion of thebackrest 11 in side view. An upper portion of the armrest 14 may have an arbitrary shape such as a downward L shape in side view, not being limited to a closed loop shape in side view. - Herein, an example of an attachment structure of the armrest 14 (armrest fulcrum 15) in the chair with an armrest will be described with reference to
FIGS. 6 and7 . As illustrated inFIGS. 6 and7 , anattachment portion 17 used to attach the armrest 14 to thesupport base 5 is provided at a tip of a lower part facing inward of thearmrest fulcrum 15 in thearmrest 14, and anattachment target portion 18 that attaches theattachment portion 17 of thearmrest 14 is provided on thelateral side 5a of the front part of thespread support base 5. - A pair of fitting
convex portions attachment portion 17 of the armrest 14, and areentrant portion 17c is provided between the pair of fittingconvex portions convex portions convex portions convex portions - A width between internal surfaces of a front and rear of the
reentrant portion 17c positioned between the fittingconvex portions convex portions reentrant portion 17c is shallower than a maximum protrusion size of the fittingconvex portions - Widths between internal surfaces of a upper and lower part, and a front and rear of fitting
concave portions concave portions protrusion 22 positioned between the fittingconcave portions protrusion 22. An external surface of theprotrusion 22 is in an inverse tapered shape opposite to the internal surfaces of the fittingconcave portions - As illustrated in
FIG. 6 , a protrusion size of theprotrusion 22 is less than a maximum reentrant size of theconcave portions protrusion 22 is provided with ascrew hole 23 that passes through thesupport base 5 to reach an internal surface thereof toward a basal portion of theprotrusion 22. - A lower surface in the
attachment portion 17 of thearmrest fulcrum 15 is provided with aconcave portion 19, and a bottom surface of theconcave portion 19 is provided with a screw throughhole 20 that passes through the armrest fulcrum 15 to reach a bottom surface of thereentrant portion 17c. In addition, around theattachment portion 17, aguard portion 24 that comes into contact with a neighboring portion in theattachment target portion 18 of thesupport base 5 is provided. - When the
attachment portion 17 of thearmrest 14 is attached to theattachment target portion 18 of thesupport base 5, the pair of the fittingconvex portions reentrant portion 17c of thearmrest fulcrum 15 are fitted to the pair of the fittingconcave portions protrusion 22 of thesupport base 5, and then ascrew 21 passing through the screw throughhole 20 from theconcave portion 19 for spot facing of thearmrest 14 is screwed to thescrew hole 23 in theprotrusion 22 of thesupport base 5, thereby fastening theattachment portion 17 and theattachment target portion 18 from a fitting direction of thefitting portions concave portions - In the chair with an armrest having the above configuration, the rear part of the
seat 6 is raised upward by an added force of the impellingunit 10 in the unused state illustrated inFIG. 2 , theseat 6 is positioned at the unused position which is inclined in a rear upward, and thebackrest 11 is maintained at the standing position that is directed nearly upward by an extension of the pushinglever 13. - In addition, in the unused state of
FIG. 2 , a void where a hand is not squeezed when a person who is seated moves the hand backward is provided between the rear face of the upper portion of thearmrest fulcrum 15 in thearmrest 14 and the front face of the lateral portion of thebackrest 11 in planar view. As illustrated inFIG. 1 , voids are provided between thearmrest fulcrums armrests seat 6. Thus, thearmrest 14 does not inhibit theseat 6 from rotating. - In this state, when the person is seated, the
seat 6 rotates to the usage position illustrated inFIG. 3 by resisting an added force of the impellingunit 10 due to a load of the person, and the person may promptly take an appropriate posture of having a seat. In this instance, thebackrest 11 attached to theseat 6 moves downward and backward by resisting an added force of the pushinglever 13. The rear face of thearmrest 14 is inclined in a rear upward and thus, a gap between the rear face and thebackrest 11 increases toward the lower part of the armrest 14 where a hand or clothes of the person seated frequently comes close when thebackrest 11 moves downward and backward. Thus, it is possible to reduce a risk that a hand or an object is squeezed in the gap. - When the person seated pushes his back backward by leaning against the
backrest 11 from a seated state illustrated inFIG. 3 , thebackrest 10 is rotated about thespindle 12 to the backward tilting position illustrated inFIG. 4 while elastically contracting the pushinglever 13. - When the person seated pulls his back forward, the
backrest 11 is rotated forward about thespindle 12 and returns to the original standing position by an extension due to an elastic restoring force of the pushinglever 13. - When the person seated is about to stand up from the seated state illustrated in
FIG. 3 , theseat 6 is impelled to rotate upward toward the unused position by the impellingunit 10, and may assist the person seated in standing up. - In this instance, the
seat 6 and thebackrest 11 moves to the unused position as illustrated inFIG. 2 , but thearmrest 14 is connected to thesupport base 5 and thus, a height thereof does not change.
As such, for example, even when the person seated sits on theseat 6, and stands up from a state in which thearmrest 14 is put under a top plate of a desk, a gap between the armrest 14 and the top plate of the desk does not change, and thearmrest 14 does not come into contact with the top plate and thus, thearmrest 14 may be used safely. - A fitting convex portion may be provided at the
attachment target portion 18 of thechair 5, and a fitting concave portion may be provided at theattachment portion 17 of thearmrest 14. In addition, thearmrest 14 may be attached to any component such as a seat, a backrest, and a backrest supporting lever of a chair, not being limited to thesupport base 5. In this case, when thearmrest 14 is attached to a member whose width increases toward a front or a rear in planar view, it is preferable that the armrest 14 be attached to a portion where the width is increased. - Next, an example of an attachment structure of the
elbow pad 16 in the chair with an armrest will be described with reference toFIGS. 8 through 14 . As illustrated inFIG. 8 ,flexures armrest fulcrum 15, respectively. - A top of the
armrest fulcrum 15 is provided with aconcave portion 25 in which an opening area has nearly the same size as that of theelbow pad 16, and a front end reaches half way of theflexure 15a, and theconcave portion 25 forms an elbowpad attachment portion 26. - The
elbow pad 16 has a thin plate shape which is slim in the front and back direction, and a front part thereof is provided with aflexure 16a that is curved obliquely downward. In addition, as illustrated inFIG. 10 , theelbow pad 16 is formed as an integral unit of asoft member 16b and ahard member 16c. - As illustrated in
FIGS. 8 and10 , a rear end and left and right internal surfaces of a rear part of theconcave portion 25 in thearmrest fulcrum 15 are provided with hook type engagedpieces 26a to 26c (seeFIG. 13 ), opening forward and inward, in which an upper side and a rear side are blocked. Left and right internal surfaces in a front part of theconcave portion 25 are provided with concave portions (engaging holes) 26d and 26e (seeFIG. 14 ) which are blocked forward and in the front and back direction and are opened inward. Further, a front end portion of theconcave portion 25 is provided with aconcave portion 26f that opens upward. Theconcave portion 26f is provided at theflexure 15a in the front part of thearmrest fulcrum 15 and thus, is positioned below the engagedpieces 26a to 26c. - As illustrated in
FIGS. 9 and10 , a rear end and both sides of a rear part of anouter periphery 27 of theelbow pad 16 are provided with hooktype engaging pieces 27a to 27c (seeFIG. 13 ) that protrudes backward. Similarly, both left and right sides of a front part are provided with elastic engagingpieces FIG. 14 ) which protrudes toward external sides in a horizontal direction and may be elastically deformed. Further, a front end portion is provided with aconvex portion 27f which protrudes downward. Theconvex portion 27f is provided at theflexure 16a of theelbow pad 16 and thus, is positioned below the engagingpieces 27a to 27c. - As illustrated in
FIG. 11 , when theelbow pad 16 is attached to thearmrest fulcrum 15, theelbow pad 16 is positioned slightly in front of a position confronted with the elbowpad attachment portion 26, and is placed on top of thearmrest fulcrum 15. Then, as illustrated inFIGS. 12 and13 , when theelbow pad 16 is slid backward, the engagingpieces 27a to 27c of theelbow pad 16 are engaged with the engagedpieces 26a to 26c of the armrest fulcrum 15 from the front side. - Next, as illustrated in
FIGS. 12 and14 , when a front part of theelbow pad 16 is pressed downward, theconvex portion 27f of theelbow pad 16 is fitted to theconcave portion 26f of the armrest fulcrum 15 from an upper portion. In addition, the elastic engagingpieces elbow pad 16 moves downward while being elastically deformed inward, and are engaged with theconcave portions armrest fulcrum 15 by an elastic restoring force. In this way, theelbow pad 16 is reliably attached to thearmrest fulcrum 15 while blocking theconcave portion 25 of thearmrest fulcrum 15. - In this state, even when a force is applied to the front part of the
elbow pad 16 in the upward and downward direction and in the front and back direction, the upward, forward, and backward directions of theconcave portions elbow pad 16 from being deviated in the upward and downward direction and the front and back direction. - In the attachment structure of the elbow pad, merely by engaging the engaging
pieces 27a to 27c of the rear part and theconvex portion 27f of the front part in theelbow pad 16 with the engagedpieces 26a to 26c and theconcave portion 26f in the elbowpad attachment portion 26 of thearmrest fulcrum 15, it is possible to easily attach theelbow pad 16 to thearmrest fulcrum 15. In this case, the attachment structure may be embodied by reversing the front and rear directions of thearmrest fulcrum 15 and theelbow pad 16. In addition, a lower surface of theelbow pad 16 may be provided with elements, similar to theconcave portion 25, the engagedpieces 26a to 26c, theconcave portions 26d to 26f, and the like in thearmrest fulcrum 15, which are flipped from top to bottom, and the elbowpad attachment portion 26 of thearmrest fulcrum 15 may be provided with elements, similar to the engagingpieces 27a to 27c, the elastic engagingpieces convex portion 27f, and the like in the lower surface of theelbow pad 16, which are flipped from top to bottom. - That is, in the attachment structure of the elbow pad, a rear part or a front part of one of the elbow
pad attachment portion 26 on a top of thearmrest 14 and theelbow pad 16 is provided with the hook type engagedpiece 26a opening forward or backward; the front part or the rear part is provided with theconcave portion 26f opening in the upward and downward direction; the hooktype engaging piece 27a opening backward or forward is provided at a position facing the engagedpiece 26a of the other one of the elbowpad attachment portion 26 and theelbow pad 16; a position facing theconcave portion 26f is provided with theconvex portion 27f which protrudes in the upward and downward direction; the engagingpiece 27a is engaged with the engagedpiece 26a; and theconvex portion 27f is fitted to theconcave portion 26f, thereby attaching theelbow pad 16 to the top of thearmrest 14. - In this way, merely by engaging the hook
type engaging piece 27a provided at one of the elbowpad attachment portion 26 of thearmrest 14 and theelbow pad 16 to the hook type engagedpiece 26a provided at the other one, and by fitting theconvex portion 27f provided at one of the elbowpad attachment portion 26 and theelbow pad 16 to theconcave portion 26f provided at the other one from an upper side, it is possible to reliably attach theelbow pad 16 to an attachment target portion of thearmrest 14 without greatly elastically deforming theelbow pad 16, and it is possible to enhance a flexibility of the design of thearmrest 14 without a limitation on a material and a shape of theelbow pad 16 since theelbow pad 16 does not need to be formed from a soft and thick member. - Further, by providing the
concave portion 26f and theconvex portion 27f below the engagedpiece 26a and theengaging piece 27a, it is possible to fit theconvex portion 27f to theconcave portion 26f after engaging theengaging piece 27a with the engagedpiece 26a and thus, it is possible to further facilitate an attachment operation of theelbow pad 16. In this instance, by providing theflexure 15a that is curved downward at the front part in the elbowpad attachment portion 26 of the armrest 14, and providing theconcave portion 26f or theconvex portion 27f in theflexure 15a, it is possible to provide theconcave portion 26f and theconvex portion 27f below the engagedpiece 26a and theengaging piece 27a with a simple configuration. - In addition, since the
flexures pad attachment portion 26 of thearmrest fulcrum 15 and theelbow pad 16, respectively, the front part of theelbow pad 16 may not be greatly lifted when theelbow pad 16 is slid backward to engage the rear part of theelbow pad 16 with the elbowpad attachment portion 26 of thearmrest fulcrum 15. That is, merely by sliding theelbow pad 16 backward while theelbow pad 16 is placed above the elbowpad attachment portion 26 so as to be deviated, and engaging the rear part of theelbow pad 16 with the elbowpad attachment portion 26, and then pressing the front part of theelbow pad 16 downward, it is possible to easily engage the front part of theelbow pad 16 with the elbowpad attachment portion 26. Accordingly, an attachment operation of theelbow pad 16 is facilitated. - Further, the elastic engaging
pieces elbow pad 16 are engaged with theconcave portions armrest fulcrum 15 by an elastic restoring force and thus, a width thereof in the upward and downward direction may be decreased. As such, theelbow pad 16 may be made thin as a whole. Further, it is possible to reliably attach theelbow pad 16 to thearmrest 14. -
- 1
- CASTER
- 2
- LEG ROD
- 3
- LEG BODY
- 4
- POST
- 5
- SUPPORT BASE
- 5a
- LATERAL SIDE
- 6
- SEAT
- 7
- SEAT BOARD
- 8
- CUSHION MATERIAL
- 9
- AXLE
- 10
- IMPELLING UNIT
- 11
- BACKREST
- 12
- SPINDLE
- 13
- PUSHING LEVER
- 14
- ARMREST
- 15
- ARMREST FULCRUM
- 15a, 15b
- FLEXURE
- 16
- ELBOW PAD
- 16a
- FLEXURE
- 16b
- SOFT MEMBER
- 16c
- HARD MEMBER
- 17
- FITTING PORTION
- 17a, 17b
- FITTING CONVEX PORTION
- 17c
- REENTRANT PORTION
- 18
- FITTING TARGET PORTION
- 18a, 18b
- FITTING CONCAVE PORTION
- 19
- CONCAVE PORTION
- 20
- SCREW THROUGH HOLE
- 21
- SCREW
- 22
- PROTRUSION
- 23
- SCREW HOLE
- 24
- GUARD PORTION
- 25
- CONCAVE PORTION
- 26
- ELBOW PAD ATTACHMENT PORTION
- 26a to 26c
- ENGAGED PIECE
- 26d to 26f
- CONCAVE PORTION
- 27
- ATTACHMENT PORTION
- 27a to 27c
- ENGAGING PIECE
- 27d, 27e
- ELASTIC ENGAGING PIECE
- 27f
- CONVEX PORTION
Claims (8)
- A chair with an armrest, comprising:a support base supported by a leg;a seat that is pivotally fixed to the support base using an axle extending in a left and right direction, a rear part of the seat being rotatable upward and downward;an impelling unit that is provided at the support base and impels the seat at the rear of the axle upward; andan armrest in which a lower part is connected to the support base, and an upper part stands upward from an exterior side of the seat.
- The chair with an armrest according to claim 1, wherein
the support base has a shape that is spread forward in planar view and is inclined in a front upward in side view, and
the armrest is connected to a lateral side in a front part of the support base. - The chair with an armrest according to claim 2, wherein
the seat is pivotally fixed to a front part positioned above a rear part of the support base, and
the armrest is connected to a portion behind the axle in the support base. - The chair with an armrest according to any one of claims 1 to 3, wherein
the armrest includes an armrest fulcrum that has an inward L shape in planar view, and an elbow pad member fixed to an upper end surface of the armrest fulcrum, and
the armrest fulcrum passes from the support base to a lower part of the seat and stands upward from an exterior side of the seat. - The chair with an armrest according to claim 1, wherein
fitting convex portions divided into two-pronged ends are provided to one of an attachment target portion of the chair that attaches the armrest positioned at a side of the seat and an attachment portion attached to the attachment target portion of the armrest,
fitting concave portions divided into two-pronged ends are provided to another one,
a width between external surfaces in the fitting convex portions gradually decreases toward a tip of the fitting convex portions,
a width between internal surfaces in the fitting concave portions gradually decreases toward the inside of the fitting convex portions,
the pair of the fitting convex portions and a reentrant portion positioned between the pair of the fitting convex portions are fitted to the pair of the fitting concave portions and a protrusion positioned between the pair of the fitting concave portions, and
the attachment portion and the attachment target portion are fastened by a fastening unit from a fitting direction of the fitting convex portions and the fitting concave portions. - The chair with an armrest according to claim 5, wherein the attachment target portion of the chair is provided at a portion where a width of a component, whose width increases toward a front or a rear in planar view, is increased.
- The chair with an armrest according to claim 5 or 6, wherein
a screw hole is provided from an apical surface of the protrusion positioned between the pair of the fitting concave portions toward a basal portion of the protrusion,
a screw through hole is provided on a bottom surface of the reentrant portion positioned between the pair of the fitting convex portions, and
a screw passing through the screw through hole is screwed to the screw hole, thereby fastening the attachment portion of the armrest to the attachment target portion of the chair. - The chair with an armrest according to claim 5, wherein, a guard portion that comes into contact with a neighboring portion of the attachment target portion in the chair is provided around the attachment portion in the armrest.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010234169A JP5635362B2 (en) | 2010-10-19 | 2010-10-19 | Chair with armrests |
JP2010236202A JP5632253B2 (en) | 2010-10-21 | 2010-10-21 | Armrest mounting structure |
JP2010236203A JP5650492B2 (en) | 2010-10-21 | 2010-10-21 | Armrest mounting structure of armrest |
PCT/JP2011/073227 WO2012053381A1 (en) | 2010-10-19 | 2011-10-07 | Chair with armrest |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2630894A1 true EP2630894A1 (en) | 2013-08-28 |
EP2630894A4 EP2630894A4 (en) | 2014-11-12 |
Family
ID=45975098
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11834221.1A Withdrawn EP2630894A4 (en) | 2010-10-19 | 2011-10-07 | Chair with armrest |
Country Status (5)
Country | Link |
---|---|
US (1) | US20130207427A1 (en) |
EP (1) | EP2630894A4 (en) |
KR (1) | KR20130133763A (en) |
CN (1) | CN103167816A (en) |
WO (1) | WO2012053381A1 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10966527B2 (en) | 2017-06-09 | 2021-04-06 | Steelcase Inc. | Seating arrangement and method of construction |
US10194750B2 (en) | 2015-04-13 | 2019-02-05 | Steelcase Inc. | Seating arrangement |
JP6826043B2 (en) | 2015-04-13 | 2021-02-03 | スティールケース インコーポレイテッド | Seating structure |
US11259637B2 (en) | 2015-04-13 | 2022-03-01 | Steelcase Inc. | Seating arrangement |
JP6765182B2 (en) * | 2015-11-05 | 2020-10-07 | 株式会社オカムラ | Chair armchair, chair |
EP3469956A4 (en) * | 2016-06-10 | 2019-10-30 | Okamura Corporation | Armrest and chair |
WO2018140110A1 (en) * | 2017-01-26 | 2018-08-02 | Ultra-Mek, Inc. | Reclining high-leg seating unit |
US10463155B2 (en) * | 2018-01-22 | 2019-11-05 | Knoll, Inc. | Fastenerless arm pad attachment mechanism |
US11109683B2 (en) | 2019-02-21 | 2021-09-07 | Steelcase Inc. | Body support assembly and method for the use and assembly thereof |
US11357329B2 (en) | 2019-12-13 | 2022-06-14 | Steelcase Inc. | Body support assembly and methods for the use and assembly thereof |
KR102491250B1 (en) | 2021-07-30 | 2023-01-20 | 류시창 | Evacuation elevator |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0956749A (en) * | 1995-08-30 | 1997-03-04 | Takano Co Ltd | Rising auxiliary chair |
JP2004113454A (en) * | 2002-09-26 | 2004-04-15 | Tomoji Kobayashi | Chair |
US20050235414A1 (en) * | 2004-04-21 | 2005-10-27 | Cavanagh Bruce J | Roll-about powerized toilet seat lift |
JP2007325696A (en) * | 2006-06-07 | 2007-12-20 | Okamura Corp | Armrest frame attaching structure in chair |
Family Cites Families (54)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2083838A (en) * | 1934-05-19 | 1937-06-15 | Fritz Cross Company | Chair |
NO143253C (en) * | 1977-08-25 | 1981-01-14 | Staal & Stil As | LABORATORY DEVICE. |
US4911501A (en) * | 1989-06-09 | 1990-03-27 | Harter Corporation | Suspension mechanism for connecting chair backs and seats to a pedestal |
US5308145A (en) * | 1992-02-12 | 1994-05-03 | Kimball International Marketing, Inc. | Reclining chair |
DE69334200T2 (en) * | 1992-06-15 | 2008-12-24 | Herman Miller, Inc., Zeeland | Backrest for a chair |
GB2281368B (en) * | 1993-08-21 | 1996-06-12 | Mark Anthony Dennis | Concealed fixing device |
CA2174511A1 (en) * | 1993-11-01 | 1995-05-11 | Willi Hensel | A working chair with synchronous seat and back adjustment |
JP3156115B2 (en) | 1994-03-10 | 2001-04-16 | 株式会社岡村製作所 | Chair armrest mounting device |
US5782536A (en) * | 1995-02-17 | 1998-07-21 | Steelcase Inc. | Modular chair construction and method of assembly |
US5775774A (en) * | 1996-08-12 | 1998-07-07 | Okano; Hiroshi | Tilt mechanism for chairs |
US5934758A (en) * | 1997-04-30 | 1999-08-10 | Haworth, Inc. | Membrane chair |
US5979984A (en) * | 1997-10-24 | 1999-11-09 | Steelcase Development Inc. | Synchrotilt chair with forwardly movable seat |
GB9802447D0 (en) * | 1998-02-04 | 1998-04-01 | Unit Press Limited | Mechanism for chair |
DE19823632C1 (en) * | 1998-05-27 | 1999-09-30 | Roeder Peter | Office chair |
WO2000022959A1 (en) * | 1998-10-20 | 2000-04-27 | Protoned B.V. | Chair mechanism |
EP1039815B1 (en) * | 1998-10-21 | 2003-09-17 | Vitra Patente AG | Chair with adjustment mechanism |
US6109694A (en) * | 1999-06-01 | 2000-08-29 | Hon Technololgy, Inc. | Chair with four-bar linkage for self-adjusting back tension |
US6161897A (en) * | 1999-06-03 | 2000-12-19 | Hon Technology Inc. | Chair construction |
DE10026475A1 (en) * | 2000-05-27 | 2001-12-06 | Haworth Bueroeinrichtung Gmbh | chair |
US6842959B2 (en) * | 2001-01-25 | 2005-01-18 | Dahti, Inc. | Load bearing fabric attachment and associated method |
DE10122946C1 (en) * | 2001-05-11 | 2003-01-30 | Armin Sander | Chair, especially office chair |
DE10122945A1 (en) * | 2001-05-11 | 2002-12-12 | Armin Sander | Chair, especially office chair |
US6568760B2 (en) * | 2001-06-15 | 2003-05-27 | Hon Technology Inc. | Chair of modular construction |
US6609755B2 (en) * | 2001-06-15 | 2003-08-26 | Hon Technology Inc. | Ergonomic chair |
US6890030B2 (en) * | 2001-07-31 | 2005-05-10 | Haworth, Inc. | Chair having a seat with adjustable front edge |
US20030132653A1 (en) * | 2001-10-18 | 2003-07-17 | Doug Thole | Tension control mechanism for a chair |
JP4108322B2 (en) * | 2001-11-30 | 2008-06-25 | タカノ株式会社 | Joint structure and method and chair using the same |
US6811218B2 (en) * | 2001-12-14 | 2004-11-02 | Kimball International, Inc. | Chair with conforming seat |
US7249802B2 (en) * | 2002-02-13 | 2007-07-31 | Herman Miller, Inc. | Back support structure |
US7234775B2 (en) * | 2002-06-18 | 2007-06-26 | Hector Serber | Dynamically balanced seat assembly having independently and arcuately movable seat and backrest and method |
US7097249B2 (en) * | 2002-07-23 | 2006-08-29 | Okamura Corporation | Tilting mechanism for a chair and chair having the same |
US7226130B2 (en) * | 2002-09-12 | 2007-06-05 | Steelcase Development Corporation | Seating with comfort surface |
US6685267B1 (en) * | 2002-12-19 | 2004-02-03 | L & P Property Management Company | Chair and synchrotilt chair mechanism |
DE10306851A1 (en) * | 2003-02-18 | 2004-08-26 | Dózsa-Farkas, Andras | Office chair has back rest which reclines about axis at ends of L-shaped levers mounted on its base, seat sliding forward in synchronization with back rest and axis maintaining constant position above seat |
AU2003234076A1 (en) * | 2003-05-21 | 2004-12-13 | Co.Fe.Mo. S.P.A. | Modular mechanism for office chairs and the like |
US7048335B2 (en) * | 2003-06-05 | 2006-05-23 | Steelcase Development Corporation | Seating unit with crossbar seat support |
US7066538B2 (en) * | 2003-12-30 | 2006-06-27 | Hni Technologies, Inc. | Chair with tilt lock mechanism |
US6969116B2 (en) * | 2003-12-30 | 2005-11-29 | Hni Technologies Inc. | Chair with backward and forward passive tilt capabilities |
US7273253B2 (en) * | 2004-06-09 | 2007-09-25 | Kimball International, Inc. | Chair ride mechanism with tension assembly |
US7147282B2 (en) * | 2004-11-08 | 2006-12-12 | Kimball International, Inc. | Chair with backrest depth adjustment mechanism |
CA2600310C (en) * | 2005-03-01 | 2014-07-08 | Haworth, Inc. | Tilt control mechanism for a chair |
JP4719905B2 (en) * | 2005-10-27 | 2011-07-06 | コクヨ株式会社 | Chair |
JP4747311B2 (en) * | 2005-11-11 | 2011-08-17 | コクヨ株式会社 | Chair |
JP4614088B2 (en) * | 2005-11-11 | 2011-01-19 | コクヨ株式会社 | Spring mounting structure |
US7837265B2 (en) * | 2006-03-24 | 2010-11-23 | Hni Corporation | Reclining chair with enhanced adjustability |
US7410216B2 (en) * | 2006-06-08 | 2008-08-12 | Haworth, Inc. | Tension adjustment mechanism for a chair |
DE102006047889B4 (en) * | 2006-10-10 | 2008-10-23 | Interstuhl Büromöbel GmbH & Co. KG | Seating furniture, in particular office chair |
US8662586B2 (en) * | 2006-10-10 | 2014-03-04 | Hector Serber | Dynamically balanced seat assembly having independently and arcuately movable backrest and method |
EP1946674B1 (en) * | 2007-01-22 | 2009-12-16 | Sedus Stoll AG | Chair with adjustable seat |
CN101801241B (en) * | 2007-03-13 | 2013-06-05 | Hni技术公司 | Dynamic chair back lumbar support system |
KR100903215B1 (en) * | 2008-10-10 | 2009-06-18 | 주식회사 시디즈 | Tilting chair |
JP5512952B2 (en) | 2008-10-29 | 2014-06-04 | 株式会社岡村製作所 | Chair |
US8272692B1 (en) * | 2009-10-26 | 2012-09-25 | Epperson Ronald B | Office chair having tiltable seat and back |
US8864230B2 (en) * | 2010-06-15 | 2014-10-21 | Betty A. Augustat | Ergometric chair apparatus |
-
2011
- 2011-10-07 WO PCT/JP2011/073227 patent/WO2012053381A1/en active Application Filing
- 2011-10-07 US US13/880,266 patent/US20130207427A1/en not_active Abandoned
- 2011-10-07 CN CN2011800502869A patent/CN103167816A/en active Pending
- 2011-10-07 KR KR1020137009921A patent/KR20130133763A/en not_active Application Discontinuation
- 2011-10-07 EP EP11834221.1A patent/EP2630894A4/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0956749A (en) * | 1995-08-30 | 1997-03-04 | Takano Co Ltd | Rising auxiliary chair |
JP2004113454A (en) * | 2002-09-26 | 2004-04-15 | Tomoji Kobayashi | Chair |
US20050235414A1 (en) * | 2004-04-21 | 2005-10-27 | Cavanagh Bruce J | Roll-about powerized toilet seat lift |
JP2007325696A (en) * | 2006-06-07 | 2007-12-20 | Okamura Corp | Armrest frame attaching structure in chair |
Non-Patent Citations (1)
Title |
---|
See also references of WO2012053381A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN103167816A (en) | 2013-06-19 |
KR20130133763A (en) | 2013-12-09 |
EP2630894A4 (en) | 2014-11-12 |
US20130207427A1 (en) | 2013-08-15 |
WO2012053381A1 (en) | 2012-04-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2630894A1 (en) | Chair with armrest | |
JP5514509B2 (en) | Rocking chair | |
US20070052271A1 (en) | Securing structure of a seat of a cart for use by the elderly and handicapped persons | |
US9462889B2 (en) | Chair with a seat and backrest movable in a synchronized way | |
GB2430009A (en) | Seat securing mechanism comprising tapered control rod | |
CN108143159B (en) | Chair back waist rest linkage mechanism | |
TWM391815U (en) | Sheath supporting frames for portable electronic device | |
JP2018068980A (en) | Backrest of chair | |
KR102565650B1 (en) | Structure for adjusting support force of lumbar pillow, and chair | |
JP5601818B2 (en) | Rocking chair | |
JP4341831B2 (en) | Chair | |
KR101378062B1 (en) | Chair | |
JP2006212152A (en) | Chair | |
JP2004065530A (en) | Chair | |
JP2020058762A (en) | Chair | |
JP5284339B2 (en) | Chair headrest device | |
KR200252699Y1 (en) | Chair | |
JP2002136387A (en) | Back plate mounting structure for chair | |
JP5078311B2 (en) | Chair | |
KR100370179B1 (en) | Fold and unfold type chair | |
JP7302943B2 (en) | armrest device | |
JP2018007727A (en) | Chair | |
JP5616133B2 (en) | Chair | |
JP4384927B2 (en) | Chair | |
JP5635362B2 (en) | Chair with armrests |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20130412 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
DAX | Request for extension of the european patent (deleted) | ||
A4 | Supplementary search report drawn up and despatched |
Effective date: 20141014 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: A61G 5/14 20060101ALI20141008BHEP Ipc: A47C 7/02 20060101ALI20141008BHEP Ipc: A47C 7/54 20060101AFI20141008BHEP |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Effective date: 20150324 |