WO2012053381A1 - Chair with armrest - Google Patents

Chair with armrest Download PDF

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Publication number
WO2012053381A1
WO2012053381A1 PCT/JP2011/073227 JP2011073227W WO2012053381A1 WO 2012053381 A1 WO2012053381 A1 WO 2012053381A1 JP 2011073227 W JP2011073227 W JP 2011073227W WO 2012053381 A1 WO2012053381 A1 WO 2012053381A1
Authority
WO
WIPO (PCT)
Prior art keywords
armrest
chair
fitting
support base
seat
Prior art date
Application number
PCT/JP2011/073227
Other languages
French (fr)
Japanese (ja)
Inventor
益永　浩
洋一郎 小田
五十嵐　僚
Original Assignee
株式会社岡村製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2010234169A external-priority patent/JP5635362B2/en
Priority claimed from JP2010236202A external-priority patent/JP5632253B2/en
Priority claimed from JP2010236203A external-priority patent/JP5650492B2/en
Application filed by 株式会社岡村製作所 filed Critical 株式会社岡村製作所
Priority to EP11834221.1A priority Critical patent/EP2630894A4/en
Priority to KR1020137009921A priority patent/KR20130133763A/en
Priority to CN2011800502869A priority patent/CN103167816A/en
Priority to US13/880,266 priority patent/US20130207427A1/en
Publication of WO2012053381A1 publication Critical patent/WO2012053381A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • 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 is a chair with an armrest, and in particular, when not in use, the rear part of the seat is lifted up, and when the seated person sits, the seat abuts against the seated person's buttocks and rotates together with the buttocks to a substantially horizontal position.
  • the present invention relates to a chair with an armrest that guides seating and raises the rear part of the seat to assist standing when the seated person stands up.
  • the seat is supported so as to be rotatable between a non-use position in which the seat is inclined rearward and upward with respect to the lower structure of the chair and a use position in which the seat is inclined horizontally or rearward and downward.
  • an urging means for urging the urchin toward the non-use position is provided, and a backrest is provided at the rear part of the seat (see, for example, Patent Document 1).
  • an armrest is connected to a seat (see, for example, Patent Document 2).
  • JP 2010-104463 A Japanese Patent No. 3156115
  • the present invention has been made in view of the above problems, and an object of the present invention is to provide a chair with an armrest that can safely use an armrest when the rear portion of the seat rotates.
  • a support base supported by a leg, a seat pivotally attached to the support base with a pivot shaft facing in the left-right direction, a rear portion pivotable in a vertical direction, a seat provided on the support base, and the seat
  • urging means for urging the rear part upward from the pivot, and an armrest whose lower part is connected to the support base and whose upper part stands from the outside of the seat.
  • the height of the armrest connected to the support base does not change even if the rear part of the seat rotates in the vertical direction. Therefore, when the seated person stands up from the seat, the armrest does not come into contact with the desk top or the like, so that the chair can be used safely.
  • the support base has a shape that expands forward in a plan view, and is inclined forward and upward in a side view, and the armrest is moved to the front portion of the support base. Connect to the side.
  • the horizontal distance between the portion of the armrest on which the seated person sits and the connecting portion of the armrest with the support base can be made relatively short.
  • the bending moment acting on the connecting portion with the armrest support can be reduced. Therefore, the armrest can be prevented from falling off the support base.
  • the armrest since the armrest is connected to the front portion above the rear portion of the support base, the length of the armrest in the vertical direction can be shortened compared to the case where the armrest is connected to the rear portion of the support base.
  • the seat is pivotally attached to a front portion located above the rear portion of the support base, and the armrest is connected to the rear of the pivot shaft of the support base.
  • the connecting portion can be made of a thick member to increase the strength. This prevents the armrest from falling off the support base.
  • the armrest includes an inward L-shaped armrest strut in front view and an armrest member provided on the upper end surface of the armrest strut.
  • the armrest strut is erected upward from the outside of the seat through the support base and below the seat.
  • the armrest connected to the support base can be separated from the lower surface and side surface of the seat, so that the armrest does not hinder the rotation of the seat.
  • a fitting convex portion that is divided into one of a mounting portion of a chair to which an armrest located on the side of the seat is to be mounted and a mounting portion to be mounted on the mounting portion of the armrest. And the other side is provided with a bifurcated fitting recess, and the width between the outer surfaces of the fitting projection is made gradually narrower toward the tip of the fitting projection, The width between the inner surfaces of the fitting recess is gradually narrowed toward the back of the fitting recess, and the recess located between the pair of fitting projections and the pair of fitting projections.
  • the fitting portion is fitted to the pair of fitting recesses and the protrusion located between the pair of fitting recesses, and the attachment portion and the attached portion are fitted to the fitting projection and the fitting. It fastens with a fastening means from the fitting direction with a recessed part.
  • the mounted portion of the chair is provided in a widened portion of a constituent member that widens forward or rearward in plan view.
  • the load applied by the seated person on the armrest located on the side of the seat and the horizontal distance between the mounting part and the mounting part can be shortened, so the load applied by the seated person acts on the armrest.
  • the bending moment which acts on the attachment part of an armrest can be made small.
  • a screw hole is provided from the front end surface of the protrusion located between the pair of fitting recesses toward the base of the protrusion, and the recess
  • a screw insertion hole is provided on the bottom surface, and a screw passed through the screw insertion hole is screwed into the screw hole, thereby fastening the armrest mounting portion to the mounted portion of the chair.
  • the screwing length of the screw that fastens the armrest mounting portion and the chair mounting portion can be increased, and the fastening force by the screw can be increased.
  • a collar portion is provided around the attachment portion of the armrest so as to contact a portion of the chair around the attachment portion.
  • Such a configuration can prevent the fitting force between the armrest attachment portion and the chair attachment portion from becoming excessive.
  • the height of the armrest connected to the support base does not change, so that the armrest can be used safely.
  • FIG. 1 is a front view of an embodiment of the chair with armrests according to the present invention in a non-use state.
  • FIG. 2 is a side view of the chair with armrests shown in FIG.
  • FIG. 3 is a side view of the chair with armrests shown in FIG. 1 in use.
  • FIG. 4 is a side view of the chair with the armrest shown in FIG. 1 when the backrest is tilted backward.
  • FIG. 5 is an enlarged plan view showing a connection structure between the support base and the armrest as seen from the line VV in FIG. 6 is an enlarged sectional view taken along line VI-VI in FIG.
  • FIG. 7 is an enlarged perspective view of the armrest attachment portion and the support attachment portion in FIG. 2 as viewed obliquely from the rear.
  • FIG. 1 is a front view of an embodiment of the chair with armrests according to the present invention in a non-use state.
  • FIG. 2 is a side view of the chair with armrests shown in FIG.
  • FIG. 8 is an enlarged exploded perspective view of the armrest mounting portion of the armrest and the armrest viewed obliquely from the front.
  • FIG. 9 is an enlarged perspective view of the mounting portion of the elbow pad as viewed from the rear and obliquely below.
  • FIG. 10 is an enlarged longitudinal side view showing the armrest and the armrest in an exploded manner.
  • FIG. 11 is an enlarged vertical side view showing a state where the elbow rest is placed slightly forward of the elbow rest mounting portion.
  • FIG. 12 is an enlarged longitudinal sectional side view showing a state in which the elbow rest is attached to the elbow rest attaching portion.
  • 13 is an enlarged sectional view taken along line XIII-XIII in FIG. 14 is an enlarged sectional view taken along line XIV-XIV in FIG.
  • this armchair-equipped chair includes a leg body 3 having five leg rods 2 having a radial shape with a caster 1 at the tip.
  • an extendable leg 4 having a gas spring (not shown) is erected, and the rear part of the support base 5 facing forward is fixed to the upper end of the leg 4.
  • the support base 5 has a shallow dish shape (see FIG. 5) having a triangular shape in plan view that expands toward the front, and as shown in FIG. Further, as shown in FIG. 1, the support base 5 has an upward U shape when viewed from the front, and is open to the front. It is easy to insert a member, a tool, etc. from the front.
  • the seat 6 includes a synthetic resin seat plate 7 and a cushion material 8 attached to the upper surface of the seat plate 7, and the front end both sides of the seat plate 7 are arranged on the front end both sides of the support base 5.
  • the pivot 9 is rotated around the pivot 9 into a non-use position that tilts rearward and upward, and a use position that tilts horizontally or rearward as shown in FIG. It is possible to move.
  • the rotation range is preferably about 15 degrees.
  • the seat 6 is always urged upward by the urging means 10 toward the non-use position.
  • the front portions of the portions where the lower sides of the backrest 11 are bent forward are pivotally attached with support shafts 12 facing left and right, respectively. As shown in FIG. 2 and FIG. 3, it can be rotated around the support shaft 12 between a standing position that faces substantially upward and a rearward tilt position as shown in FIG. 4. Note that the specific structure of the backrest 11 and the pivotally attached portion is not directly related to the present invention, and therefore detailed illustration and description thereof will be omitted.
  • the rear portion of the support base 5 and the portion of the backrest 11 below the support shaft 12 are connected by an elastically extendable push rod 13 that faces in the front-rear direction.
  • the seat 6 is rotated downward from the non-use position to the use position (see FIG. 3)
  • the lower end portion of the backrest 11 is pushed rearward by the pushing rod 13 so that the backrest 11 is maintained in an upright state.
  • the backrest 11 can be tilted backward as shown in FIG. 4 against the elastic restoring force of the pusher 13 by the elastic contraction of the pusher 13.
  • an armrest 14 is connected to the rear side of the pivot 9 of the both side surfaces 5a in the front portion of the support base 5 expanded.
  • the armrest 14 includes an armrest strut 15 having an L-shape inwardly viewed from the front and extending upward from the outside of the seat 6 through the support base 5 and below the seat 6.
  • a soft elbow rest (elbow rest member) 16 fixed to the upper end of the armrest strut 15.
  • the portion of the armrest strut 15 that stands up from the side of the seat 6 has a substantially triangular closed loop shape in which the width in the front-rear direction gradually increases upward in a side view.
  • the upper rear surface of the armrest strut 15 is inclined rearward and upward with a curved surface substantially similar to the front surface of the side of the backrest 11 in a side view.
  • the upper portion of the armrest 14 is not limited to a closed loop shape in a side view, but may have any shape such as a downward L-shape in a side view.
  • pillar 15) in the said chair with an armrest is demonstrated.
  • an attachment portion 17 for attaching to the support base 5 is provided at the lower end of the armrest 14 facing the inward side of the armrest support 15, and the front side surface of the support base 5 is expanded.
  • 5a is provided with a mounted portion 18 to which the mounting portion 17 of the armrest 14 is attached.
  • the mounting portion 17 of the armrest 14 is provided with a pair of fitting convex portions 17a and 17b that are divided into two in the front-rear direction, and a recessed portion 17c is provided between the pair of fitting convex portions 17a and 17b. Is provided.
  • the fitting convex portions 17a and 17b form a quadrangular prism whose tip is narrowed.
  • the width between the upper and lower outer surfaces of the fitting convex portions 17a and 17b and the width between the front and rear outer surfaces gradually become narrower toward the tips of the fitting convex portions 17a and 17b.
  • the side surface is tapered.
  • the width between the front and rear inner surfaces of the recessed portion 17c located between the fitting convex portions 17a and 17b gradually becomes narrower toward the back, and the front and rear inner surfaces are the outer surfaces of the fitting convex portions 17a and 17b. It is the reverse taper shape opposite to.
  • the recessed depth of the recessed portion 17c is shallower than the maximum projecting dimension of the fitting convex portions 17a and 17b.
  • the width between the upper and lower and front and rear inner surfaces of the fitting recesses 18a and 18b gradually becomes narrower toward the back of the fitting recesses 18a and 18b, and the front and rear of the protrusion 22 positioned between the fitting recesses 18a and 18b.
  • the width between the outer surfaces of the projections gradually becomes narrower toward the tip of the protrusion 22.
  • the outer surface of the protrusion 22 has a reverse taper shape opposite to the inner surfaces of the fitting recesses 18a and 18b.
  • the projecting dimension of the projecting part 22 is smaller than the maximum recessed dimension of the recessed parts 18a and 18b.
  • a screw hole 23 penetrating to the inner surface of the support base 5 is provided on the front end surface of the protrusion 22 toward the base of the protrusion 22.
  • a concave portion 19 is provided on the lower side surface of the mounting portion 17 of the armrest strut 15, and a screw insertion hole 20 that penetrates to the bottom surface of the concave portion 17 c is provided on the bottom surface of the concave portion 19. Further, around the attachment portion 17, a collar portion 24 that abuts on a peripheral portion of the attached portion 18 of the support base 5 is provided.
  • the pair of fitting convex portions 17 a and 17 b and the recessed portion 17 c of the armrest column 15 are fitted to the pair of fittings of the support base 5.
  • the screw 21 passed from the counterbore 19 for the armrest 14 to the screw insertion hole 20 is screwed into the screw hole 23 in the protrusion 22 of the support base 5.
  • the attaching part 17 and the to-be-attached part 18 are fastened from the fitting direction of fitting part 17a, 17b and fitting recessed part 18a, 18b.
  • the armchair configured as described above is lifted up by the urging force of the urging means 10 so that the seat 6 is tilted rearward upward.
  • the backrest 11 is held in an upright position substantially facing upward by the extension of the push rod 13.
  • the seat 6 When the seated person sits in this state, the seat 6 is rotated to the use position shown in FIG. 3 against the biasing force of the biasing means 10 by the load of the seated person, and the seated person can quickly and properly Can take a sitting posture.
  • the backrest 11 attached to the seat 6 also moves rearward and downward against the urging force of the push rod 13. Since the back surface of the armrest 14 is inclined rearward and upward, when the backrest 11 moves rearward and downward, the lower part of the armrest 14 where the seated person's hand and clothes are often close to each other are spaced from the backrest 11. Spread. Therefore, it is possible to reduce the risk of putting a hand or an object in this gap.
  • the backrest 10 When the seated person leans back against the backrest 11 from the seating state shown in FIG. 3 and tilts the back backward, the backrest 10 is elastically contracted by the push rod 13 and the support shaft 12 is centered. It is rotated to a rearward tilt position as shown in FIG.
  • the backrest 11 When the seated person returns the back to the front, the backrest 11 is rotated forward about the support shaft 12 by the extension by the elastic restoring force of the push rod 13 and returned to the original standing position.
  • the seat 6 When the seated person tries to stand up from the seating state shown in FIG. 3, the seat 6 is urged by the urging means 10 to turn upward toward the non-use position, and assists the seated person to stand up. Can do.
  • the seat 6 and the backrest 11 move to the non-use position as shown in FIG. 2, but the height of the armrest 14 is not changed because it is connected to the support base 5. Therefore, for example, even when the seated person stands up from the state where the seated person sits on the seat 6 and puts the armrest 14 under the top board of the desk, the distance between the armrest 14 and the top board of the desk is The armrest 14 does not abut against the top board, and the armrest 14 can be used safely.
  • a fitting convex part can also be provided in the to-be-attached part 18 of the chair 5, and a fitting recessed part can also be provided in the attaching part 17 of the armrest 14.
  • the armrest 14 can be attached not only to the support base 5 but also to any constituent member such as a chair seat, a backrest or a backrest support heel. In this case, in order to attach the armrest 14 to a member that widens forward or rearward in plan view, it is preferable to attach it to the widened portion.
  • bent portions 15 a and 15 b are provided between the upper side portion and the front side portion, and between the upper side portion and the rear side portion, respectively, in the closed loop upper portion of the armrest strut 15. .
  • the upper end of the armrest strut 15 is provided with a concave portion 25 having an opening area substantially the same size as the elbow rest 16 and having a front end that reaches the middle of the bent portion 15a.
  • the concave portion 25 constitutes an elbow rest mounting portion 26. ing.
  • the elbow rest 16 has a thin plate shape elongated in the front-rear direction, and a bent portion 16a that is bent obliquely downward is provided at the front portion. Further, as shown in FIG. 10, the elbow rest 16 is formed by integrally molding a soft member 16b and a hard member 16c.
  • the rear end of the recess 25 in the armrest strut 15 and the left and right inner surfaces of the rear part are closed on the upper and rear sides and open toward the front and the inner side.
  • the engagement pieces 26a to 26c are provided, and the left and right inner surfaces of the front portion of the recess 25 are closed in the upper and front-rear directions and open toward the inside (engagement).
  • Holes) 26d and 26e are provided, and a recess 26f that opens upward is provided at the front end of the recess 25. Since the recessed portion 26f is provided in the bent portion 15a in the front portion of the armrest strut 15, it is positioned below the engaged pieces 26a to 26c.
  • hook-shaped engagement pieces 27 a to 27 c projecting rearward are formed on the rear end and both sides of the rear portion of the outer peripheral portion 27 of the elbow pad 16.
  • elastically deformable elastic engagement pieces 27d and 27e projecting outward in the left-right direction are provided on the left and right sides of the front part, and further, Convex part 27f which protrudes toward is provided. Since the convex portion 27f is provided on the bent portion 16a of the elbow pad 16, it is positioned below the engaging pieces 27a to 27c.
  • the elbow rest 16 When the elbow rest 16 is attached to the armrest strut 15, as shown in FIG. 11, the elbow rest 16 is placed on the upper end of the armrest strut 15 so that the elbow rest 16 is positioned slightly forward from the position facing the elbow rest mounting portion 26. Put. When the elbow rest 16 is slid rearward, as shown in FIGS. 12 and 13, the engaging pieces 27a to 27c of the elbow rest 16 are engaged with the engaged pieces 26a to 26c of the armrest strut 15 from the front. Combined.
  • the convex part 27f of the elbow pad 16 is fitted into the concave part 26f of the armrest column 15 from above as shown in FIGS. Further, the elastic engagement pieces 27d and 27e of the elbow pad 16 move downward while elastically deforming inward, and are engaged with the recesses 26d and 26e of the armrest column 15 by the elastic restoring force. Thereby, the armrest 16 is securely attached to the armrest strut 15 in a state where the recess 25 of the armrest strut 15 is closed.
  • the rear engaging pieces 27a to 27c of the elbow rest 16 and the front convex portion 27f are connected to the engaged pieces 26a to 26c of the elbow rest mounting portion 26 of the armrest column 15.
  • the armrest 16 can be easily attached to the armrest strut 15 simply by engaging with the recess 26f. In this case, the front and back directions of the armrest strut 15 and the armrest 16 may be reversed.
  • the same parts as the concave portion 25, the engaged pieces 26 a to 26 c and the concave portions 26 d to 26 f in the armrest strut 15 are provided upside down, and the armrest mounting portion of the armrest strut 15 is provided. 26, the same as the engaging pieces 27a to 27c, the elastic engaging pieces 27d and 27e, and the convex portions 27f on the lower surface of the elbow pad 16 may be provided upside down.
  • a hook-shaped engagement that opens forward or rearward at the rear or front of either the elbow rest mounting portion 26 at the upper end of the armrest 14 or the elbow rest 16.
  • a concave portion 26f that opens in the vertical direction is also provided in the front part or the rear part, and at the position facing the engaged piece 26a on the other of the elbow rest mounting part 26 and the elbow rest 16,
  • a hook-shaped engagement piece 27a that opens rearward or forward is provided, and a convex portion 27f that protrudes in the vertical direction is provided at a position facing the concave portion 26f.
  • the elbow rest 16 is attached to the upper end of the armrest 14 by engaging with the convex portion 27f and engaging the convex portion 27f with the concave portion 26f.
  • the hook-shaped engagement piece 27a provided on either the armrest mounting portion 26 of the armrest 14 or the armrest 16 is engaged with the hook-shaped engagement piece 26a provided on the other,
  • the armrest is not greatly deformed by simply fitting the convex portion 27f provided on either the elbow rest mounting portion 26 or the elbow rest 16 into the concave portion 26f provided on the other side from above.
  • the armrest 14 can be securely attached to the mounted portion, and the elbow rest 16 does not need to be made of a soft and thick member, so that the degree of freedom in designing the armrest 14 is increased without being restricted by the material and shape of the armrest 16. can do.
  • the concave portion 26f and the convex portion 27f are provided below the engaged piece 26a and the engaging piece 27a, so that the engaging piece 27a is engaged with the engaged piece 26a, and then the convex portion 27f is recessed. Since it can be made to fit in 26f, the attachment operation
  • a bent portion 15a that is bent downward is provided at the front portion of the armrest mounting portion 26 of the armrest 14, and the concave portion 26f or the convex portion 27f is provided on the bent portion 15a. And the convex part 27f can be provided below the engaged piece 26a and the engaging piece 27a.
  • the elbow rest attaching portion 26 of the armrest strut 15 and the elbow rest 16 are provided with bent portions 15a and 16a which are bent downward, respectively, the rear portion of the elbow rest 16 is used as the elbow rest attaching portion 26 of the armrest strut 15. Because of the engagement, when the elbow pad 16 is slid rearward, it is not necessary to lift the front part of the elbow pad 16 greatly. That is, after the elbow rest 16 is placed on the elbow rest mounting portion 26 while being shifted in position, the elbow rest 16 is slid rearward as it is and the rear portion of the elbow rest 16 is engaged with the elbow rest mounting portion 26, The front part of the elbow pad 16 can be easily engaged with the elbow pad mounting part 26 simply by pressing the front part of the 16 downward. Therefore, the mounting operation of the elbow rest 16 is facilitated.
  • the elastic engagement pieces 27d and 27e of the elbow pad 16 need only be engaged with the recesses 26d and 26e of the armrest column 15 by elastic restoring force, the width in the vertical direction can be reduced.
  • the elbow rest 16 can be made thinner overall, and the elbow rest 16 can be securely attached by the armrest 14.

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  • 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

The present invention relates to a chair with an armrest. In one embodiment, the chair with an armrest comprises a support base (5) supported by a leg, a seat (6) that is pivotally mounted to the support base (5) using an axle (9) extending in the lateral direction, the rear part of the seat being able to rotate in the vertical direction, an impelling means (10) that is provided at the support base (5) and upwardly impels the seat (6) at the rear of the axle (9), and an armrest (14) provided to the support base (5). When the rear part of the seat (6) rotates in the vertical direction the height of the armrest (14) does not change and therefore arms or other body parts are not squeezed between the top board of a desk and the armrest (14).

Description

肘掛け付き椅子Chair with armrests
　本発明は、肘掛け付き椅子、特に、不使用状態では、座の後部が持ち上がり、着座者が着座する際には、座が、着座者の臀部に当接して、臀部とともにほぼ水平位置まで回動することにより、着座を誘導し、着座者が立上がる際には、座の後部が持ち上がって、起立を補助するようにした肘掛け付き椅子に関する。 The present invention is a chair with an armrest, and in particular, when not in use, the rear part of the seat is lifted up, and when the seated person sits, the seat abuts against the seated person's buttocks and rotates together with the buttocks to a substantially horizontal position. Thus, the present invention relates to a chair with an armrest that guides seating and raises the rear part of the seat to assist standing when the seated person stands up.
　この種の椅子としては、座を椅子の下部構成体に対して後上向きに傾斜する不使用位置と、水平、または後下向きに傾斜する使用位置との間を回動可能として支持するとともに、座を不使用位置に向けて付勢する付勢手段を設け、座の後部に背凭れを設けたものがある(例えば特許文献１参照)。
　一方、肘掛けを座に連結したものもある(例えば特許文献２参照)。 In this type of chair, the seat is supported so as to be rotatable between a non-use position in which the seat is inclined rearward and upward with respect to the lower structure of the chair and a use position in which the seat is inclined horizontally or rearward and downward. There is an apparatus in which an urging means for urging the urchin toward the non-use position is provided, and a backrest is provided at the rear part of the seat (see, for example, Patent Document 1).
On the other hand, there is one in which an armrest is connected to a seat (see, for example, Patent Document 2).
特開２０１０－１０４４６３号公報JP 2010-104463 A 特許第３１５６１１５号公報Japanese Patent No. 3156115
　特許文献１に記載されているような、不使用状態と使用状態との間において、座の後部が回動する椅子にも、肘掛けを設けるのが望ましい。しかし、特許文献１のような椅子に、特許文献２のように、肘掛けを座に取り付けた場合、着座者が座に着座して机の下に肘掛けを入れている状態から立上がるときに、座の後部が上方へ回動するのに伴い、肘掛けも上方に移動し、肘掛けが机の天板に当接する虞がある。 It is desirable to provide an armrest on a chair in which the rear part of the seat rotates between the non-use state and the use state as described in Patent Document 1. However, when the armrest is attached to the seat as in Patent Document 2 in the chair as in Patent Document 1, when the seated person stands up from the state of sitting on the seat and putting the armrest under the desk, As the rear part of the seat rotates upward, the armrest also moves upward, and the armrest may come into contact with the top plate of the desk.
　本発明は、上記問題点に鑑みてなされたもので、座の後部が回動する場合に、肘掛けを安全に使用できる肘掛け付き椅子を提供することを目的としている。 The present invention has been made in view of the above problems, and an object of the present invention is to provide a chair with an armrest that can safely use an armrest when the rear portion of the seat rotates.
　本発明によると、上記課題は、次のようにして解決される。
（１）脚によって支持された支基と、前記支基に、左右方向を向く枢軸をもって枢着され、後部が上下方向に回動可能とした座と、前記支基に設けられ、かつ座における前記枢軸より後部を上向きに付勢する付勢手段と、下部が前記支基に連結され、かつ上部が前記座の外側方より起立する肘掛けとを備える。 According to the present invention, the above problem is solved as follows.
(1) A support base supported by a leg, a seat pivotally attached to the support base with a pivot shaft facing in the left-right direction, a rear portion pivotable in a vertical direction, a seat provided on the support base, and the seat There is provided urging means for urging the rear part upward from the pivot, and an armrest whose lower part is connected to the support base and whose upper part stands from the outside of the seat.
　このような構成とすると、座の後部が上下方向に回動しても、支基に連結された肘掛けの高さは変化しない。したがって、着座者が座から立上がるときに、肘掛けが机の天板等と当接することがなくなるので、椅子を安全に使用できる。 With this configuration, the height of the armrest connected to the support base does not change even if the rear part of the seat rotates in the vertical direction. Therefore, when the seated person stands up from the seat, the armrest does not come into contact with the desk top or the like, so that the chair can be used safely.
（２）上記(１)項において、前記支基を、平面視において前方に向かって拡開する形状とするとともに、側面視において前上方に向かって傾斜させ、前記肘掛けを前記支基の前部における側面に連結する。 (2) In the above item (1), the support base has a shape that expands forward in a plan view, and is inclined forward and upward in a side view, and the armrest is moved to the front portion of the support base. Connect to the side.
　このような構成とすると、肘掛けにおける着座者が肘を掛ける部分と、肘掛けの支基に対する連結部との間における水平方向の距離を比較的短くできるので、肘掛けに着座者による荷重が作用した場合に、肘掛けの支基との連結部に作用する曲げモーメントを小さくできる。したがって、肘掛けが支基から脱落しないようにできる。また、肘掛けを支基の後部より上にある前部に連結するので、肘掛けを支基の後部に連結した場合に比べて、肘掛けの上下方向の長さを短くすることができる。 With such a configuration, the horizontal distance between the portion of the armrest on which the seated person sits and the connecting portion of the armrest with the support base can be made relatively short. In addition, the bending moment acting on the connecting portion with the armrest support can be reduced. Therefore, the armrest can be prevented from falling off the support base. Further, since the armrest is connected to the front portion above the rear portion of the support base, the length of the armrest in the vertical direction can be shortened compared to the case where the armrest is connected to the rear portion of the support base.
（３）上記(２)項において、前記座を、前記支基の後部より上方に位置する前部に枢着し、かつ前記肘掛けを、前記支基における前記枢軸よりも後方に連結する。 (3) In the above item (2), the seat is pivotally attached to a front portion located above the rear portion of the support base, and the armrest is connected to the rear of the pivot shaft of the support base.
　このような構成とすると、肘掛けを、支基の枢軸から離れたところに連結することができるので、連結部を肉厚の大きな部材で構成して、強度を高くすることができる。これにより、肘掛けが支基から脱落しないようにできる。 With such a configuration, since the armrest can be connected to a place away from the pivot of the support base, the connecting portion can be made of a thick member to increase the strength. This prevents the armrest from falling off the support base.
（４）上記(１)～(３)項のいずれかにおいて、前記肘掛けを、正面視内向きＬ字状の肘掛け支柱と、肘掛け支柱の上端面に設けられた肘当て部材とを備えるものとし、前記肘掛け支柱を、前記支基から前記座の下方を通って、前記座の外側方から上方に起立するようにする。 (4) In any of the above items (1) to (3), the armrest includes an inward L-shaped armrest strut in front view and an armrest member provided on the upper end surface of the armrest strut. The armrest strut is erected upward from the outside of the seat through the support base and below the seat.
　このような構成とすると、支基に連結した肘掛けを、座の下面および側面から離間させることができるので、肘掛けが座の回動を阻害しないようにできる。 With such a configuration, the armrest connected to the support base can be separated from the lower surface and side surface of the seat, so that the armrest does not hinder the rotation of the seat.
（５）前記座の側方に位置する肘掛けを取り付けようとする椅子の被取付部と、肘掛けの前記被取付部に取り付ける取付部とのいずれか一方に、二又に分かれた嵌合凸部を設け、同じく他方に二又に分かれた嵌合凹部を設け、前記嵌合凸部における外側面間の幅を、嵌合凸部の先端に向かって漸次狭幅となるようにするとともに、前記嵌合凹部における内側面間の幅を、嵌合凹部の奥に向かって漸次狭幅となるようにし、前記１対の嵌合凸部、および１対の嵌合凸部の間に位置する凹入部を、前記１対の嵌合凹部、および１対の嵌合凹部の間に位置する突部に嵌合し、前記取付部と前記被取付部とを、前記嵌合凸部と前記嵌合凹部との嵌合方向から、締結手段によって締結する。 (5) A fitting convex portion that is divided into one of a mounting portion of a chair to which an armrest located on the side of the seat is to be mounted and a mounting portion to be mounted on the mounting portion of the armrest. And the other side is provided with a bifurcated fitting recess, and the width between the outer surfaces of the fitting projection is made gradually narrower toward the tip of the fitting projection, The width between the inner surfaces of the fitting recess is gradually narrowed toward the back of the fitting recess, and the recess located between the pair of fitting projections and the pair of fitting projections. The fitting portion is fitted to the pair of fitting recesses and the protrusion located between the pair of fitting recesses, and the attachment portion and the attached portion are fitted to the fitting projection and the fitting. It fastens with a fastening means from the fitting direction with a recessed part.
　このような構成とすると、椅子の被取付部、または肘掛けの取付部の一方における二又に分かれた１対の嵌合凸部の外側面と、他方における二又に分かれた１対の嵌合凹部の内側面とが、同方向に傾斜するテーパ状となっているので、嵌合凸部と、嵌合凹部とが、広い面積で当接する。したがって、肘掛けの取付部と椅子の被取付部との間に、がたつきが発生することがなく、肘掛けに着座者による荷重が作用したときに、肘掛けの取付部に発生するせん断応力を小さくすることができる。 With such a configuration, the outer surface of the pair of bifurcated fitting projections on one of the chair mounting portion or the armrest mounting portion and the pair of bifurcated fittings on the other side Since the inner surface of the concave portion is tapered in the same direction, the fitting convex portion and the fitting concave portion abut on a wide area. Therefore, rattling does not occur between the armrest mounting portion and the chair mounting portion, and the shear stress generated at the armrest mounting portion is reduced when a load is applied to the armrest by a seated person. can do.
（６）上記(５)項において、前記椅子の被取付部を、平面視において、前方または後方に向かって拡幅する構成部材の拡幅した部分に設ける。 (6) In the above item (5), the mounted portion of the chair is provided in a widened portion of a constituent member that widens forward or rearward in plan view.
　このような構成とすると、座の側方に位置する肘掛けの着座者による荷重が作用する部分と、取付部との水平方向の距離を短くすることができるので、肘掛けに着座者による荷重が作用したときに、肘掛けの取付部に作用する曲げモーメントを小さくできる。 With such a configuration, the load applied by the seated person on the armrest located on the side of the seat and the horizontal distance between the mounting part and the mounting part can be shortened, so the load applied by the seated person acts on the armrest. When it does, the bending moment which acts on the attachment part of an armrest can be made small.
（７）上記(５)または(６)項において、前記１対の嵌合凹部の間に位置する突部の先端面から、突部の基部に向かってねじ孔を設けるとともに、前記凹入部の底面にねじ挿通孔を設け、ねじ挿通孔に通したねじを前記ねじ孔に螺合することにより、前記肘掛けの取付部を前記椅子の被取付部に締結する。 (7) In the above item (5) or (6), a screw hole is provided from the front end surface of the protrusion located between the pair of fitting recesses toward the base of the protrusion, and the recess A screw insertion hole is provided on the bottom surface, and a screw passed through the screw insertion hole is screwed into the screw hole, thereby fastening the armrest mounting portion to the mounted portion of the chair.
　このような構成とすると、肘掛けの取付部と椅子の被取付部とを締結するねじの螺入長さを長くすることができ、ねじによる締結力を強くすることができる。 With such a configuration, the screwing length of the screw that fastens the armrest mounting portion and the chair mounting portion can be increased, and the fastening force by the screw can be increased.
（８）上記(５)項において、前記肘掛けにおける取付部の周囲に、前記椅子における被取付部の周囲の部分に当接するつば部を設ける。 (8) In the above item (5), a collar portion is provided around the attachment portion of the armrest so as to contact a portion of the chair around the attachment portion.
　このような構成とすると、肘掛けの取付部と、椅子の被取付部との嵌合力が、過大になるのを防止できる。 Such a configuration can prevent the fitting force between the armrest attachment portion and the chair attachment portion from becoming excessive.
　本発明によると、座の後部が上下方向に回動したとき、支基に連結された肘掛けの高さは変化しないので、肘掛けを安全に使用できる。 According to the present invention, when the rear part of the seat rotates in the vertical direction, the height of the armrest connected to the support base does not change, so that the armrest can be used safely.
図１は、本発明の肘掛け付き椅子の一実施形態の不使用状態における正面図である。FIG. 1 is a front view of an embodiment of the chair with armrests according to the present invention in a non-use state. 図２は、図１に示す肘掛け付き椅子の側面図である。FIG. 2 is a side view of the chair with armrests shown in FIG. 図３は、図１に示す肘掛け付き椅子の使用状態における側面図である。FIG. 3 is a side view of the chair with armrests shown in FIG. 1 in use. 図４は、図１に示す肘掛け付き椅子の使用状態において、背凭れを後傾させたときの側面図である。FIG. 4 is a side view of the chair with the armrest shown in FIG. 1 when the backrest is tilted backward. 図５は、図２におけるV－V線より見た支基と肘掛けとの連結構造を示す拡大平面図である。FIG. 5 is an enlarged plan view showing a connection structure between the support base and the armrest as seen from the line VV in FIG. 図６は、図２におけるVI－VI線拡大断面図である。6 is an enlarged sectional view taken along line VI-VI in FIG. 図７は、図２における肘掛けの取付部と支基の被取付部とを斜め後方から見た拡大斜視図である。FIG. 7 is an enlarged perspective view of the armrest attachment portion and the support attachment portion in FIG. 2 as viewed obliquely from the rear. 図８は、肘掛けの肘当て取付部と、肘当てとを斜め前方から見た拡大分解斜視図である。FIG. 8 is an enlarged exploded perspective view of the armrest mounting portion of the armrest and the armrest viewed obliquely from the front. 図９は、肘当ての取付部を後方の斜め下方から見た拡大斜視図である。FIG. 9 is an enlarged perspective view of the mounting portion of the elbow pad as viewed from the rear and obliquely below. 図１０は、肘掛けおよび肘当てを分解して示す拡大縦断側面図である。FIG. 10 is an enlarged longitudinal side view showing the armrest and the armrest in an exploded manner. 図１１は、肘当てを肘当て取付部の少し前方に載置した状態を示す拡大縦断側面図である。FIG. 11 is an enlarged vertical side view showing a state where the elbow rest is placed slightly forward of the elbow rest mounting portion. 図１２は、肘当てを肘当て取付部に取付けた状態を示す拡大縦断側面図である。FIG. 12 is an enlarged longitudinal sectional side view showing a state in which the elbow rest is attached to the elbow rest attaching portion. 図１３は、図１２におけるXIII－XIII線拡大断面図である。13 is an enlarged sectional view taken along line XIII-XIII in FIG. 図１４は、図１２におけるXIV－XIV線拡大断面図である。14 is an enlarged sectional view taken along line XIV-XIV in FIG.
　以下、本発明の一実施形態を、添付図面に基づいて説明する。
　図１および図２に示すように、この肘掛け付き椅子は、先端部にキャスタ１を備える放射状をなす５本の脚杆２を有する脚体３を備えている。脚体３の中央には、ガススプリング(図示略)を備える伸縮式の脚柱４が立設され、脚柱４の上端には、前方を向く支基５の後部が固着されている。 Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.
As shown in FIGS. 1 and 2, this armchair-equipped chair includes a leg body 3 having five leg rods 2 having a radial shape with a caster 1 at the tip. In the center of the leg 3, an extendable leg 4 having a gas spring (not shown) is erected, and the rear part of the support base 5 facing forward is fixed to the upper end of the leg 4.
　支基５は、前方に向かって拡開する平面視三角形の浅い皿状(図５参照)をなすとともに、図２に示すように、側面視において前上方に向かって傾斜している。また、支基５は、図１に示すように、前方より見て上向きコ字状をなし、前方に開口しているので、支基５への部材の取付け作業時に、側方や後方だけでなく、前方からも部材や工具等を挿入し易いようになっている。 The support base 5 has a shallow dish shape (see FIG. 5) having a triangular shape in plan view that expands toward the front, and as shown in FIG. Further, as shown in FIG. 1, the support base 5 has an upward U shape when viewed from the front, and is open to the front. It is easy to insert a member, a tool, etc. from the front.
　座６は、図２に示すように、合成樹脂製の座板７と、その上面に取付けられたクッション材８とからなり、座板７の前端両側部を、支基５の前端両側部に左右方向を向く枢軸９をもってそれぞれ枢着することにより、後上向きに傾斜する不使用位置と、図３に示すように、水平、または後下向きに傾斜する使用位置とに、枢軸９を中心として回動可能である。この回動範囲は、ほぼ１５度程度とするのが好ましい。
　座６は、付勢手段１０により、常時不使用位置に向かって上向きに付勢されている。 As shown in FIG. 2, the seat 6 includes a synthetic resin seat plate 7 and a cushion material 8 attached to the upper surface of the seat plate 7, and the front end both sides of the seat plate 7 are arranged on the front end both sides of the support base 5. By pivoting with the pivots 9 facing left and right, the pivot 9 is rotated around the pivot 9 into a non-use position that tilts rearward and upward, and a use position that tilts horizontally or rearward as shown in FIG. It is possible to move. The rotation range is preferably about 15 degrees.
The seat 6 is always urged upward by the urging means 10 toward the non-use position.
　図２に示すように、座板７の後部両側には、背凭れ１１の下部両側を前方に折曲した部分の前部が、左右方向を向く支軸１２をもってそれぞれ枢着され、背凭れ１１は、図２および図３に示すように、ほぼ上方を向く起立位置と、図４に示すような後傾位置とに、支軸１２を中心として回動可能である。なお、この背凭れ１１およびその枢着部分の具体的な構造については、本発明と直接関係しないので、その詳細な図示および説明は省略する。 As shown in FIG. 2, on the both sides of the rear portion of the seat plate 7, the front portions of the portions where the lower sides of the backrest 11 are bent forward are pivotally attached with support shafts 12 facing left and right, respectively. As shown in FIG. 2 and FIG. 3, it can be rotated around the support shaft 12 between a standing position that faces substantially upward and a rearward tilt position as shown in FIG. 4. Note that the specific structure of the backrest 11 and the pivotally attached portion is not directly related to the present invention, and therefore detailed illustration and description thereof will be omitted.
　図２に示すように、支基５における後部と、背凭れ１１における上記支軸１２より下方の部分とは、前後方向を向く弾性伸縮可能の押動杆１３により連結されている。
　座６の不使用位置から使用位置(図３参照)への下向き回動時に、この押動杆１３により、背凭れ１１の下端部が後方に押動されて、背凭れ１１は起立状態に維持され、また押動杆１３が弾性収縮することにより、背凭れ１１は、この押動杆１３の弾性復元力に抗して、図４に示すように、後傾させることができる。 As shown in FIG. 2, the rear portion of the support base 5 and the portion of the backrest 11 below the support shaft 12 are connected by an elastically extendable push rod 13 that faces in the front-rear direction.
When the seat 6 is rotated downward from the non-use position to the use position (see FIG. 3), the lower end portion of the backrest 11 is pushed rearward by the pushing rod 13 so that the backrest 11 is maintained in an upright state. Further, the backrest 11 can be tilted backward as shown in FIG. 4 against the elastic restoring force of the pusher 13 by the elastic contraction of the pusher 13.
　図２および図５に示すように、支基５の拡開した前部における両側面５ａの枢軸９より後方には、肘掛け１４が連結されている。この肘掛け１４は、図１に示すように、支基５から座６の下方を通って、座６の外側方から上方に起立するようにした正面視内向きＬ字状をなす肘掛け支柱１５と、肘掛け支柱１５の上端に固着された軟質の肘当て（肘当て部材）１６とからなっている。 As shown in FIGS. 2 and 5, an armrest 14 is connected to the rear side of the pivot 9 of the both side surfaces 5a in the front portion of the support base 5 expanded. As shown in FIG. 1, the armrest 14 includes an armrest strut 15 having an L-shape inwardly viewed from the front and extending upward from the outside of the seat 6 through the support base 5 and below the seat 6. , And a soft elbow rest (elbow rest member) 16 fixed to the upper end of the armrest strut 15.
　図２に示すように、肘掛け支柱１５における座６の側方より起立する部分は、側面視において前後方向の幅が上方に向かって漸次大きくなるほぼ三角形の閉ループ状をなしている。肘掛け支柱１５の上部後面は、側面視において背凭れ１１の側部前面とほぼ同様な曲面で後上向きに傾斜している。なお、肘掛け１４の上部は、側面視において閉ループ状に限らず、側面視において下向きＬ字状とするなど、任意の形状とすることができる。 As shown in FIG. 2, the portion of the armrest strut 15 that stands up from the side of the seat 6 has a substantially triangular closed loop shape in which the width in the front-rear direction gradually increases upward in a side view. The upper rear surface of the armrest strut 15 is inclined rearward and upward with a curved surface substantially similar to the front surface of the side of the backrest 11 in a side view. Note that the upper portion of the armrest 14 is not limited to a closed loop shape in a side view, but may have any shape such as a downward L-shape in a side view.
　ここで、図６及び図７を参照して、当該肘掛け付き椅子における肘掛け１４（肘掛け支柱１５）の取付構造の一例について説明する。肘掛け１４における肘掛け支柱１５の内方を向く下部先端には、図６及び図７に示すように、支基５に取り付けるための取付部１７が設けられ、支基５の拡開した前部側面５ａには、肘掛け１４の取付部１７を取り付ける被取付部１８が設けられている。 Here, with reference to FIG.6 and FIG.7, an example of the attachment structure of the armrest 14 (armrest support | pillar 15) in the said chair with an armrest is demonstrated. As shown in FIGS. 6 and 7, an attachment portion 17 for attaching to the support base 5 is provided at the lower end of the armrest 14 facing the inward side of the armrest support 15, and the front side surface of the support base 5 is expanded. 5a is provided with a mounted portion 18 to which the mounting portion 17 of the armrest 14 is attached.
　肘掛け１４の取付部１７には、前後方向に二又に分かれた１対の嵌合凸部１７ａ、１７ｂが設けられ、１対の嵌合凸部１７ａ、１７ｂの間には、凹入部１７ｃが設けられている。嵌合凸部１７ａ、１７ｂは、先端が窄まる四角柱をなしている。そして、嵌合凸部１７ａ、１７ｂの上下の外側面間の幅、および前後の外側面間の幅は、嵌合凸部１７ａ、１７ｂの先端に向かって漸次狭幅となり、上下および前後の外側面は、テーパ状となっている。 The mounting portion 17 of the armrest 14 is provided with a pair of fitting convex portions 17a and 17b that are divided into two in the front-rear direction, and a recessed portion 17c is provided between the pair of fitting convex portions 17a and 17b. Is provided. The fitting convex portions 17a and 17b form a quadrangular prism whose tip is narrowed. The width between the upper and lower outer surfaces of the fitting convex portions 17a and 17b and the width between the front and rear outer surfaces gradually become narrower toward the tips of the fitting convex portions 17a and 17b. The side surface is tapered.
　嵌合凸部１７ａ、１７ｂの間に位置する凹入部１７ｃの前後の内側面間の幅は、奥に向かって漸次狭幅となり、前後の内側面は、嵌合凸部１７ａ、１７ｂの外側面とは反対の逆テーパ状となっている。凹入部１７ｃの凹入深さは、嵌合凸部１７ａ、１７ｂの最大突出寸法より浅くなっている。 The width between the front and rear inner surfaces of the recessed portion 17c located between the fitting convex portions 17a and 17b gradually becomes narrower toward the back, and the front and rear inner surfaces are the outer surfaces of the fitting convex portions 17a and 17b. It is the reverse taper shape opposite to. The recessed depth of the recessed portion 17c is shallower than the maximum projecting dimension of the fitting convex portions 17a and 17b.
　嵌合凹部１８ａ、１８ｂの上下および前後の内側面間の幅は、嵌合凹部１８ａ、１８ｂの奥に向かって漸次狭幅となり、嵌合凹部１８ａ、１８ｂの間に位置する突部２２の前後の外側面間の幅は、突部２２の先端に向かって漸次狭幅となっている。突部２２の外側面は、嵌合凹部１８ａ、１８ｂの内側面とは反対の逆テーパ状となっている。 The width between the upper and lower and front and rear inner surfaces of the fitting recesses 18a and 18b gradually becomes narrower toward the back of the fitting recesses 18a and 18b, and the front and rear of the protrusion 22 positioned between the fitting recesses 18a and 18b. The width between the outer surfaces of the projections gradually becomes narrower toward the tip of the protrusion 22. The outer surface of the protrusion 22 has a reverse taper shape opposite to the inner surfaces of the fitting recesses 18a and 18b.
　図６に示すように、突部２２の突出寸法は、凹部１８ａ、１８ｂの最大凹入寸法より小さくなっている。突部２２の先端面には、突部２２の基部に向かって、支基５の内側面まで貫通するねじ孔２３が設けられている。 As shown in FIG. 6, the projecting dimension of the projecting part 22 is smaller than the maximum recessed dimension of the recessed parts 18a and 18b. A screw hole 23 penetrating to the inner surface of the support base 5 is provided on the front end surface of the protrusion 22 toward the base of the protrusion 22.
　肘掛け支柱１５の取付部１７における下側面には、凹部１９が設けられ、この凹部１９の底面には、凹入部１７ｃの底面まで貫通するねじ挿通孔２０が設けられている。また、取付部１７の周囲には、支基５の被取付部１８における周囲の部分に当接するつば部２４が設けられている。 A concave portion 19 is provided on the lower side surface of the mounting portion 17 of the armrest strut 15, and a screw insertion hole 20 that penetrates to the bottom surface of the concave portion 17 c is provided on the bottom surface of the concave portion 19. Further, around the attachment portion 17, a collar portion 24 that abuts on a peripheral portion of the attached portion 18 of the support base 5 is provided.
　肘掛け１４の取付部１７を支基５の被取付部１８に取り付ける場合は、肘掛け支柱１５の１対の嵌合凸部１７ａ、１７ｂ、および凹入部１７ｃを、支基５の１対の嵌合凹部１８ａ、１８ｂ、および突部２２に嵌合した後、肘掛け１４の座グリ用の凹部１９からねじ挿通孔２０に通したねじ２１を、支基５の突部２２におけるねじ孔２３に螺合することにより、取付部１７と被取付部１８とを、嵌合部１７ａ、１７ｂおよび嵌合凹部１８ａ、１８ｂの嵌合方向から締結する。 When the mounting portion 17 of the armrest 14 is attached to the mounted portion 18 of the support base 5, the pair of fitting convex portions 17 a and 17 b and the recessed portion 17 c of the armrest column 15 are fitted to the pair of fittings of the support base 5. After fitting into the recesses 18 a, 18 b and the protrusion 22, the screw 21 passed from the counterbore 19 for the armrest 14 to the screw insertion hole 20 is screwed into the screw hole 23 in the protrusion 22 of the support base 5. By doing so, the attaching part 17 and the to-be-attached part 18 are fastened from the fitting direction of fitting part 17a, 17b and fitting recessed part 18a, 18b.
　以上のような構成とした肘掛け付き椅子は、図２に示す不使用状態では、付勢手段１０の付勢力によって、座６の後部が上方に持ち上げられ、座６は後上向き傾斜する不使用位置に位置しており、背凭れ１１は、押動杆１３の伸長により、ほぼ上方を向く起立位置に保持されている。 In the non-use state shown in FIG. 2, the armchair configured as described above is lifted up by the urging force of the urging means 10 so that the seat 6 is tilted rearward upward. The backrest 11 is held in an upright position substantially facing upward by the extension of the push rod 13.
　また、図２の不使用状態においては、肘掛け１４における肘掛け支柱１５の上部後面と、背凭れ１１の側部前面との間には、平面視において、着座者が手を後方に移動させた際に、その手を挟まない程度の隙間が設けられている。図１に示すように、左右の肘掛け１４、１４における肘掛け支柱１５、１５と、座６の下面および側面との間にも、隙間が設けられている。したがって、肘掛け１４が、座６の回動を阻害することはない。 In the non-use state of FIG. 2, when the seated person moves his / her hand backward in plan view between the upper rear surface of the armrest column 15 in the armrest 14 and the side front surface of the backrest 11. In addition, a gap is provided so as not to pinch the hand. As shown in FIG. 1, a gap is also provided between the armrest columns 15, 15 in the left and right armrests 14, 14 and the lower surface and side surfaces of the seat 6. Therefore, the armrest 14 does not hinder the rotation of the seat 6.
　この状態で、着座者が着座すると、座６は着座者の荷重により、付勢手段１０の付勢力に抗して、図３に示す使用位置まで回動させられ、着座者は迅速に適正な着座姿勢を取ることができる。このときには、座６に取り付けられている背凭れ１１も、押動杆１３の付勢力に抗して後下方へ移動する。肘掛け１４の後面は、後上向きに傾斜しているため、背凭れ１１が後下方へ移動すると、着座者の手や、衣服が近接することの多い肘掛け１４の下部ほど、背凭れ１１との間隔が広がる。したがって、この隙間に、手や物を挟む危険性を低減できる。 When the seated person sits in this state, the seat 6 is rotated to the use position shown in FIG. 3 against the biasing force of the biasing means 10 by the load of the seated person, and the seated person can quickly and properly Can take a sitting posture. At this time, the backrest 11 attached to the seat 6 also moves rearward and downward against the urging force of the push rod 13. Since the back surface of the armrest 14 is inclined rearward and upward, when the backrest 11 moves rearward and downward, the lower part of the armrest 14 where the seated person's hand and clothes are often close to each other are spaced from the backrest 11. Spread. Therefore, it is possible to reduce the risk of putting a hand or an object in this gap.
　図３に示す着座状態から、着座者が背中を背凭れ１１に凭せかけて背を後方に倒すと、背凭れ１０は、押動杆１３を弾性収縮させつつ、支軸１２を中心として、図４に示すような後傾位置まで回動させられる。 When the seated person leans back against the backrest 11 from the seating state shown in FIG. 3 and tilts the back backward, the backrest 10 is elastically contracted by the push rod 13 and the support shaft 12 is centered. It is rotated to a rearward tilt position as shown in FIG.
　着座者が背中を前方に戻すと、背凭れ１１は、押動杆１３の弾性復元力による伸長によって、支軸１２を中心として前方に回動させられ、元の起立位置まで戻される。 When the seated person returns the back to the front, the backrest 11 is rotated forward about the support shaft 12 by the extension by the elastic restoring force of the push rod 13 and returned to the original standing position.
　図３に示す着座状態から、着座者が立上がろうとすると、座６は、付勢手段１０によって不使用位置に向かって上向き回動するように付勢され、着座者の起立をアシストすることができる。 When the seated person tries to stand up from the seating state shown in FIG. 3, the seat 6 is urged by the urging means 10 to turn upward toward the non-use position, and assists the seated person to stand up. Can do.
　このとき、座６および背凭れ１１は、図２のような不使用位置に移動するが、肘掛け１４は支基５に連結されているので、その高さは変わらない。
　したがって、例えば、着座者が座６に着座して、机の天板の下に肘掛け１４を入れている状態から、着座者が立上がった場合でも、肘掛け１４と机の天板との間隔は変わらず、肘掛け１４が天板に当接することがなく、肘掛け１４を安全に使用できる。 At this time, the seat 6 and the backrest 11 move to the non-use position as shown in FIG. 2, but the height of the armrest 14 is not changed because it is connected to the support base 5.
Therefore, for example, even when the seated person stands up from the state where the seated person sits on the seat 6 and puts the armrest 14 under the top board of the desk, the distance between the armrest 14 and the top board of the desk is The armrest 14 does not abut against the top board, and the armrest 14 can be used safely.
　なお、椅子５の被取付部１８に嵌合凸部を設け、肘掛け１４の取付部１７に嵌合凹部を設けることもできる。また、肘掛け１４は、支基５に限らず、椅子の座や、背凭れまたは背凭れ支持杆等の任意の構成部材に取り付けることができる。この場合、平面視において前方または後方に向かって拡幅する部材に肘掛け１４を取り付けるには、拡幅した部分に取り付けるのが好ましい。 In addition, a fitting convex part can also be provided in the to-be-attached part 18 of the chair 5, and a fitting recessed part can also be provided in the attaching part 17 of the armrest 14. FIG. Moreover, the armrest 14 can be attached not only to the support base 5 but also to any constituent member such as a chair seat, a backrest or a backrest support heel. In this case, in order to attach the armrest 14 to a member that widens forward or rearward in plan view, it is preferable to attach it to the widened portion.
　次に、図８～図１４を参照して、当該肘掛け付き椅子における肘当て１６の取付構造の一例について説明する。図８に示すように、肘掛け支柱１５の閉ループ状の上部における上辺部分と前辺部分との間、および上辺部分と後辺部分との間には、それぞれ屈曲部１５ａ、１５ｂが設けられている。 Next, an example of the mounting structure of the armrest 16 in the armchair will be described with reference to FIGS. As shown in FIG. 8, bent portions 15 a and 15 b are provided between the upper side portion and the front side portion, and between the upper side portion and the rear side portion, respectively, in the closed loop upper portion of the armrest strut 15. .
　肘掛け支柱１５の上端には、肘当て１６とほぼ同一大きさの開口面積を有し、前端が屈曲部１５ａの途中まで達する凹部２５が設けられ、その凹部２５が、肘当て取付部２６をなしている。 The upper end of the armrest strut 15 is provided with a concave portion 25 having an opening area substantially the same size as the elbow rest 16 and having a front end that reaches the middle of the bent portion 15a. The concave portion 25 constitutes an elbow rest mounting portion 26. ing.
　肘当て１６は、前後方向に細長い薄板状をなし、前部には、斜め下方に屈曲する屈曲部１６ａが設けられている。また、肘当て１６は、図１０に示すように、軟質部材１６ｂと硬質部材１６ｃとを一体成型したものよりなっている。 The elbow rest 16 has a thin plate shape elongated in the front-rear direction, and a bent portion 16a that is bent obliquely downward is provided at the front portion. Further, as shown in FIG. 10, the elbow rest 16 is formed by integrally molding a soft member 16b and a hard member 16c.
　図８および図１０に示すように、肘掛け支柱１５における凹部２５の後端と後部の左右の内側面とには、上方、および後方が閉塞され、前方、および内方に向かって開口する鈎型の被係合片２６ａ～２６ｃ(図１３参照)が設けられ、凹部２５の前部における左右の内側面には、上方、および前後方向が閉塞され、内方に向かって開口する凹部（係合孔）２６ｄ、２６ｅ(図１４参照)が設けられ、さらに凹部２５の前端部には、上方に向かって開口する凹部２６ｆが設けられている。凹部２６ｆは、肘掛け支柱１５の前部における屈曲部１５ａに設けられているので、被係合片２６ａ～２６ｃより下方に位置している。 As shown in FIGS. 8 and 10, the rear end of the recess 25 in the armrest strut 15 and the left and right inner surfaces of the rear part are closed on the upper and rear sides and open toward the front and the inner side. The engagement pieces 26a to 26c (see FIG. 13) are provided, and the left and right inner surfaces of the front portion of the recess 25 are closed in the upper and front-rear directions and open toward the inside (engagement). Holes) 26d and 26e (see FIG. 14) are provided, and a recess 26f that opens upward is provided at the front end of the recess 25. Since the recessed portion 26f is provided in the bent portion 15a in the front portion of the armrest strut 15, it is positioned below the engaged pieces 26a to 26c.
　図９および図１０に示すように、肘当て１６の外周部２７における後端と後部の両側部とには、後方に向かって突出する鈎型の係合片２７ａ～２７ｃ(図１３参照)が設けられ、同じく前部の左右両側部には、左右方向外側に向かって突出する弾性変形可能な弾性係合片２７ｄ、２７ｅ(図１４参照)と、が設けられ、さらに前端部には、下方に向かって突出する凸部２７ｆが設けられている。凸部２７ｆは、肘当て１６の屈曲部１６ａに設けられているので、係合片２７ａ～２７ｃより下方に位置している。 As shown in FIGS. 9 and 10, hook-shaped engagement pieces 27 a to 27 c (see FIG. 13) projecting rearward are formed on the rear end and both sides of the rear portion of the outer peripheral portion 27 of the elbow pad 16. Similarly, elastically deformable elastic engagement pieces 27d and 27e (see FIG. 14) projecting outward in the left-right direction are provided on the left and right sides of the front part, and further, Convex part 27f which protrudes toward is provided. Since the convex portion 27f is provided on the bent portion 16a of the elbow pad 16, it is positioned below the engaging pieces 27a to 27c.
　肘当て１６を肘掛け支柱１５に取付けるときには、図１１に示すように、肘当て１６を、肘当て取付部２６と正対する位置より僅かに前方に位置するようにして、肘掛け支柱１５の上端に載置する。そして、肘当て１６を後方にスライドさせると、図１２および図１３に示すように、肘当て１６の係合片２７ａ～２７ｃが、肘掛け支柱１５の被係合片２６ａ～２６ｃに、前方より係合される。 When the elbow rest 16 is attached to the armrest strut 15, as shown in FIG. 11, the elbow rest 16 is placed on the upper end of the armrest strut 15 so that the elbow rest 16 is positioned slightly forward from the position facing the elbow rest mounting portion 26. Put. When the elbow rest 16 is slid rearward, as shown in FIGS. 12 and 13, the engaging pieces 27a to 27c of the elbow rest 16 are engaged with the engaged pieces 26a to 26c of the armrest strut 15 from the front. Combined.
　次に、肘当て１６の前部を下方に押圧すると、図１２および図１４に示すように、肘当て１６の凸部２７ｆが、肘掛け支柱１５の凹部２６ｆに上方より嵌合される。また、肘当て１６の弾性係合片２７ｄ、２７ｅが内方に弾性変形しつつ下方に移動し、弾性復元力によって肘掛け支柱１５の凹部２６ｄ、２６ｅに係合される。これにより、肘当て１６は、肘掛け支柱１５の凹部２５を閉塞した状態で、肘掛け支柱１５に確実に取付けられる。 Next, when the front part of the elbow pad 16 is pressed downward, the convex part 27f of the elbow pad 16 is fitted into the concave part 26f of the armrest column 15 from above as shown in FIGS. Further, the elastic engagement pieces 27d and 27e of the elbow pad 16 move downward while elastically deforming inward, and are engaged with the recesses 26d and 26e of the armrest column 15 by the elastic restoring force. Thereby, the armrest 16 is securely attached to the armrest strut 15 in a state where the recess 25 of the armrest strut 15 is closed.
　この状態において、肘当て１６の前部に、上下方向、および前後方向の力が作用したとしても、凹部２６ｄ、２６ｅの上方、および前後方向が閉塞され、内方に向かって開口した形状となっているので、肘当て１６の前部が、上下方向、および前後方向へ位置ずれするのを有効に抑制することができる。 In this state, even if forces in the vertical direction and the front-rear direction are applied to the front portion of the elbow pad 16, the upper portions of the recesses 26d and 26e and the front-rear direction are blocked and the shape is opened inward. Therefore, it is possible to effectively prevent the front portion of the elbow pad 16 from being displaced in the vertical direction and the front-rear direction.
　この肘当ての取付構造においては、肘当て１６における後部の係合片２７ａ～２７ｃと、前部の凸部２７ｆとを、肘掛け支柱１５の肘当て取付部２６における被係合片２６ａ～２６ｃと、凹部２６ｆとに係合させるだけで、肘当て１６を肘掛け支柱１５に容易に取り付けることができる。この場合、肘掛け支柱１５と、肘当て１６との前後の向きを逆にして実施してもよい。また、肘当て１６の下面に、肘掛け支柱１５における凹部２５、被係合片２６ａ～２６ｃ、および凹部２６ｄ～２６ｆ等と同様のものを上下反転して設けるとともに、肘掛け支柱１５の肘当て取付部２６に、肘当て１６の下面における係合片２７ａ～２７ｃ、弾性係合片２７ｄ、２７ｅ、および凸部２７ｆ等と、同様のものを上下反転して設けてもよい。 In this elbow rest mounting structure, the rear engaging pieces 27a to 27c of the elbow rest 16 and the front convex portion 27f are connected to the engaged pieces 26a to 26c of the elbow rest mounting portion 26 of the armrest column 15. The armrest 16 can be easily attached to the armrest strut 15 simply by engaging with the recess 26f. In this case, the front and back directions of the armrest strut 15 and the armrest 16 may be reversed. Further, on the lower surface of the armrest 16, the same parts as the concave portion 25, the engaged pieces 26 a to 26 c and the concave portions 26 d to 26 f in the armrest strut 15 are provided upside down, and the armrest mounting portion of the armrest strut 15 is provided. 26, the same as the engaging pieces 27a to 27c, the elastic engaging pieces 27d and 27e, and the convex portions 27f on the lower surface of the elbow pad 16 may be provided upside down.
　すなわち、この肘当ての取付構造では、肘掛け１４の上端における肘当て取付部２６と、肘当て１６とのいずれか一方における後部または前部に、前方または後方に向かって開口する鈎型の被係合片２６ａを設けるとともに、同じく前部または後部に、上下方向に向かって開口する凹部２６ｆを設け、肘当て取付部２６と肘当て１６との他方における被係合片２６ａと対向する位置に、後方または前方に向かって開口する鈎型の係合片２７ａを設けるとともに、同じく凹部２６ｆと対向する位置に、上下方向に向かって突出する凸部２７ｆを設け、係合片２７ａを被係合片２６ａに係合させるとともに、凸部２７ｆを凹部２６ｆに嵌合することにより、肘当て１６を肘掛け１４の上端に取付ける。 In other words, in this elbow rest mounting structure, a hook-shaped engagement that opens forward or rearward at the rear or front of either the elbow rest mounting portion 26 at the upper end of the armrest 14 or the elbow rest 16. In addition to providing the joint piece 26a, a concave portion 26f that opens in the vertical direction is also provided in the front part or the rear part, and at the position facing the engaged piece 26a on the other of the elbow rest mounting part 26 and the elbow rest 16, A hook-shaped engagement piece 27a that opens rearward or forward is provided, and a convex portion 27f that protrudes in the vertical direction is provided at a position facing the concave portion 26f. The elbow rest 16 is attached to the upper end of the armrest 14 by engaging with the convex portion 27f and engaging the convex portion 27f with the concave portion 26f.
　これにより、肘掛け１４の肘当て取付部２６と、肘当て１６とのいずれか一方に設けた鈎型の係合片２７ａを、他方に設けた鈎型の被係合片２６ａに係合させ、肘当て取付部２６と、肘当て１６とのいずれか一方に設けた凸部２７ｆを、他方に設けた凹部２６ｆに上方より嵌合させるだけで、肘当て１６を大きく弾性変形させることなく、肘掛け１４の被取付部に確実に取付けることができ、肘当て１６を柔らかく厚い部材から作る必要がなくなるなど、肘当て１６の材質および形状に制約を受けることなく、肘掛け１４のデザインの自由度を高くすることができる。 Thereby, the hook-shaped engagement piece 27a provided on either the armrest mounting portion 26 of the armrest 14 or the armrest 16 is engaged with the hook-shaped engagement piece 26a provided on the other, The armrest is not greatly deformed by simply fitting the convex portion 27f provided on either the elbow rest mounting portion 26 or the elbow rest 16 into the concave portion 26f provided on the other side from above. The armrest 14 can be securely attached to the mounted portion, and the elbow rest 16 does not need to be made of a soft and thick member, so that the degree of freedom in designing the armrest 14 is increased without being restricted by the material and shape of the armrest 16. can do.
　さらに、凹部２６ｆおよび凸部２７ｆを、被係合片２６ａおよび係合片２７ａより下方に設けたことにより、係合片２７ａを被係合片２６ａに係合させた後、凸部２７ｆを凹部２６ｆに嵌合させることができるので、肘当て１６の取付作業を一層容易にすることができる。この際、肘掛け１４の肘当て取付部２６における前部に、下方に向かって屈曲する屈曲部１５ａを設け、屈曲部１５ａに凹部２６ｆまたは凸部２７ｆを設けることで、簡単な構成で、凹部２６ｆおよび凸部２７ｆを、被係合片２６ａおよび係合片２７ａより下方に設けることができる。 Further, the concave portion 26f and the convex portion 27f are provided below the engaged piece 26a and the engaging piece 27a, so that the engaging piece 27a is engaged with the engaged piece 26a, and then the convex portion 27f is recessed. Since it can be made to fit in 26f, the attachment operation | work of the elbow pad 16 can be made still easier. At this time, a bent portion 15a that is bent downward is provided at the front portion of the armrest mounting portion 26 of the armrest 14, and the concave portion 26f or the convex portion 27f is provided on the bent portion 15a. And the convex part 27f can be provided below the engaged piece 26a and the engaging piece 27a.
　また、肘掛け支柱１５の肘当て取付部２６と、肘当て１６とに、それぞれ下方に屈曲する屈曲部１５ａ、１６ａを設けたので、肘当て１６の後部を肘掛け支柱１５の肘当て取付部２６に係合させるため、肘当て１６を後方にスライドさせるときに、肘当て１６の前部を大きく持ち上げる必要がない。すなわち、肘当て１６を肘当て取付部２６上に位置をずらして載置した状態で、そのまま後方にスライドさせて、肘当て１６の後部を肘当て取付部２６に係合させた後、肘当て１６の前部を下方に押圧するだけで、肘当て１６の前部を肘当て取付部２６に簡単に係合させることができる。したがって、肘当て１６の取り付け作業が容易になる。 In addition, since the elbow rest attaching portion 26 of the armrest strut 15 and the elbow rest 16 are provided with bent portions 15a and 16a which are bent downward, respectively, the rear portion of the elbow rest 16 is used as the elbow rest attaching portion 26 of the armrest strut 15. Because of the engagement, when the elbow pad 16 is slid rearward, it is not necessary to lift the front part of the elbow pad 16 greatly. That is, after the elbow rest 16 is placed on the elbow rest mounting portion 26 while being shifted in position, the elbow rest 16 is slid rearward as it is and the rear portion of the elbow rest 16 is engaged with the elbow rest mounting portion 26, The front part of the elbow pad 16 can be easily engaged with the elbow pad mounting part 26 simply by pressing the front part of the 16 downward. Therefore, the mounting operation of the elbow rest 16 is facilitated.
　さらに、肘当て１６の弾性係合片２７ｄ、２７ｅは、弾性復元力によって、肘掛け支柱１５の凹部２６ｄ、２６ｅに対して係合すればよいので、その上下方向の幅を小とすることができ、もって、肘当て１６を全体的に薄くすることができ、さらに肘当て１６を、肘掛け１４により確実に取付けることができる。 Furthermore, since the elastic engagement pieces 27d and 27e of the elbow pad 16 need only be engaged with the recesses 26d and 26e of the armrest column 15 by elastic restoring force, the width in the vertical direction can be reduced. Thus, the elbow rest 16 can be made thinner overall, and the elbow rest 16 can be securely attached by the armrest 14.
　１　キャスタ
　２　脚杆
　３　脚体
　４　脚柱
　５　支基
　５ａ　側面
　６　座
　７　座板
　８　クッション材
　９　枢軸
１０　付勢手段
１１　背凭れ
１２　支軸
１３　押動杵
１４　肘掛け
１５　肘掛け支柱
１５ａ、１５ｂ　屈曲部
１６　肘当て
１６ａ　屈曲部
１６ｂ　軟質部材
１６ｃ　硬質部材
１７　嵌合部
１７ａ、１７ｂ　嵌合凸部
１７ｃ　凹入部
１８　被嵌合部
１８ａ、１８ｂ　嵌合凹部
１９　凹部
２０　ねじ挿通孔
２１　ねじ
２２　突部
２３　ねじ孔
２４　つば部
２５　凹部
２６　肘当て取付部
２６ａ～２６ｃ　被係合片
２６ｄ～２６ｆ　凹部
２７　取付部
２７ａ～２７ｃ　係合片
２７ｄ、２７ｅ　弾性係合片
２７ｆ　凸部 DESCRIPTION OF SYMBOLS 1 Caster 2 Leg rod 3 Leg 4 Leg column 5 Support base 5a Side surface 6 Seat 7 Seat plate 8 Cushion material 9 Axis 10 Energizing means 11 Backrest 12 Support shaft 13 Pushing rod 14 Armrest 15 Armrest strut 15a, 15b Bending part 16 Elbow rest 16a Bending part 16b Soft member 16c Hard member 17 Fitting part 17a, 17b Fitting convex part 17c Recessed part 18 Fitted part 18a, 18b Fitting concave part 19 Recessed part 20 Screw insertion hole 21 Screw 22 Projecting part 23 Screw Hole 24 Collar 25 Recess 26 Elbow rest mounting part 26a-26c Engagement piece 26d-26f Recess 27 Mounting part 27a- 27c Engagement piece 27d, 27e Elastic engagement piece 27f Projection

Claims (8)

  1. 　脚によって支持された支基と、
    　前記支基に、左右方向を向く枢軸をもって枢着され、後部が上下方向に回動可能とした座と、
    　前記支基に設けられ、かつ座における前記枢軸より後部を上向きに付勢する付勢手段と、
    　下部が前記支基に連結され、かつ上部が前記座の外側方より起立する肘掛けとを備えることを特徴とする肘掛け付き椅子。     A base supported by legs,
    A seat pivotally attached to the support base with a pivot shaft facing in the left-right direction, and a rear portion rotatable in the up-down direction;
    A biasing means provided on the support base and biasing a rear part upward from the pivot in the seat;
    A chair with an armrest, comprising: an armrest having a lower portion connected to the support base and an upper portion standing from the outside of the seat.
  2. 　前記支基を、平面視において前方に向かって拡開する形状とするとともに、側面視において前上方に向かって傾斜させ、前記肘掛けを前記支基の前部における側面に連結した請求項１記載の肘掛け付き椅子。 2. The support base according to claim 1, wherein the support base has a shape that expands forward in a plan view, is inclined forward and upward in a side view, and the armrest is connected to a side surface in a front portion of the support base. Chair with armrests.
  3. 　前記座を、前記支基の後部より上方に位置する前部に枢着し、かつ前記肘掛けを、前記支基における前記枢軸よりも後方に連結した請求項２記載の肘掛け付き椅子。 The chair with an armrest according to claim 2, wherein the seat is pivotally attached to a front portion located above the rear portion of the support base, and the armrest is connected to the rear of the pivot shaft of the support base.
  4. 　前記肘掛けを、正面視内向きＬ字状の肘掛け支柱と、肘掛け支柱の上端面に設けられた肘当て部材とを備えるものとし、前記肘掛け支柱を、前記支基から前記座の下方を通って、前記座の外側方から上方に起立するようにした請求項１～３のいずれかに記載の肘掛け付き椅子。 The armrest includes an L-shaped armrest strut inwardly viewed from the front, and an armrest member provided on an upper end surface of the armrest strut, and the armrest strut passes from the support base and below the seat. The chair with an armrest according to any one of claims 1 to 3, wherein the chair stands up from the outside of the seat.
  5. 　前記座の側方に位置する肘掛けを取り付けようとする椅子の被取付部と、肘掛けの前記被取付部に取り付ける取付部とのいずれか一方に、二又に分かれた嵌合凸部を設け、同じく他方に二又に分かれた嵌合凹部を設け、前記嵌合凸部における外側面間の幅を、嵌合凸部の先端に向かって漸次狭幅となるようにするとともに、前記嵌合凹部における内側面間の幅を、嵌合凹部の奥に向かって漸次狭幅となるようにし、前記１対の嵌合凸部、および１対の嵌合凸部の間に位置する凹入部を、前記１対の嵌合凹部、および１対の嵌合凹部の間に位置する突部に嵌合し、前記取付部と前記被取付部とを、前記嵌合凸部と前記嵌合凹部との嵌合方向から、締結手段によって締結したことを特徴とする請求項１記載の肘掛け付き椅子。 A fitting convex part divided into two is provided on either one of the attached part of the chair to which the armrest located on the side of the seat is attached and the attaching part attached to the attached part of the armrest, Similarly, a bifurcated fitting recess is provided on the other side so that the width between the outer surfaces of the fitting projection gradually becomes narrower toward the tip of the fitting projection, and the fitting recess The width between the inner side surfaces is gradually narrowed toward the back of the fitting concave portion, and the pair of fitting convex portions, and the concave portion positioned between the pair of fitting convex portions, The pair of fitting recesses and the protrusions located between the pair of fitting recesses are fitted, and the attachment portion and the attached portion are connected to the fitting protrusion and the fitting recess. The chair with an armrest according to claim 1, wherein the chair is fastened by fastening means from the fitting direction.
  6. 　前記椅子の被取付部を、平面視において前方または後方に向かって拡幅する構成部材の拡幅した部分に設けた請求項５記載の肘掛け付き椅子。 The chair with an armrest according to claim 5, wherein the mounted portion of the chair is provided in a widened portion of a constituent member that widens forward or rearward in plan view.
  7. 　前記１対の嵌合凹部の間に位置する突部の先端面から、突部の基部に向かってねじ孔を設けるとともに、前記１対の嵌合凸部の間に位置する凹入部の底面にねじ挿通孔を設け、ねじ挿通孔に通したねじを前記ねじ孔に螺合することにより、前記肘掛けの取付部を前記椅子の被取付部に締結した請求項５または６記載の肘掛け付き椅子。 A screw hole is provided from the front end surface of the protrusion located between the pair of fitting recesses toward the base of the protrusion, and on the bottom surface of the recessed portion located between the pair of fitting protrusions. The chair with an armrest according to claim 5 or 6, wherein a screw insertion hole is provided, and a mounting portion of the armrest is fastened to a mounting portion of the chair by screwing a screw passed through the screw insertion hole into the screw hole.
  8. 　前記肘掛けにおける取付部の周囲に、前記椅子における被取付部の周囲の部分に当接するつば部を設けた請求項５記載の肘掛け付き椅子。 The chair with an armrest according to claim 5, wherein a brim portion is provided around the attachment portion of the armrest so as to contact a portion of the chair around the attachment portion.
PCT/JP2011/073227 2010-10-19 2011-10-07 Chair with armrest WO2012053381A1 (en)

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KR1020137009921A KR20130133763A (en) 2010-10-19 2011-10-07 Chair with armrest
CN2011800502869A CN103167816A (en) 2010-10-19 2011-10-07 Chair with armrest
US13/880,266 US20130207427A1 (en) 2010-10-19 2011-10-07 Chair with armrest

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JP2010234169A JP5635362B2 (en) 2010-10-19 2010-10-19 Chair with armrests
JP2010-234169 2010-10-19
JP2010-236203 2010-10-21
JP2010-236202 2010-10-21
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

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CN103167816A (en) 2013-06-19
EP2630894A1 (en) 2013-08-28
KR20130133763A (en) 2013-12-09
EP2630894A4 (en) 2014-11-12
US20130207427A1 (en) 2013-08-15

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