JP4477743B2 - Chair armrest mounting device - Google Patents

Chair armrest mounting device Download PDF

Info

Publication number
JP4477743B2
JP4477743B2 JP2000135967A JP2000135967A JP4477743B2 JP 4477743 B2 JP4477743 B2 JP 4477743B2 JP 2000135967 A JP2000135967 A JP 2000135967A JP 2000135967 A JP2000135967 A JP 2000135967A JP 4477743 B2 JP4477743 B2 JP 4477743B2
Authority
JP
Japan
Prior art keywords
armrest
hole
inward
insertion hole
strut
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2000135967A
Other languages
Japanese (ja)
Other versions
JP2001197957A (en
Inventor
浩 益永
将人 角道
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Okamura Corp
Original Assignee
Okamura Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Okamura Corp filed Critical Okamura Corp
Priority to JP2000135967A priority Critical patent/JP4477743B2/en
Publication of JP2001197957A publication Critical patent/JP2001197957A/en
Application granted granted Critical
Publication of JP4477743B2 publication Critical patent/JP4477743B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Special Chairs (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、椅子に肘掛けを、容易かつ強固に取り付ける装置に関する。
【0002】
【従来の技術】
図11は、従来の一般的な肘掛け付きの椅子を示し、(1)は脚、(2)は座、(3)は、脚(1)の上端に設けられ、座(2)を支持する支基、(4)は背もたれ、(5)は肘掛け、(6)は、上部がほぼ垂直で、下部が内側方に湾曲する肘掛支柱である。肘掛け(5)は、その下面中央部に上端が固着された肘掛支柱(6)の下端内向き部(6a)を、支基(3)の下面、または座(2)の下面に、下方より取付ボルト(7)により螺締することによって、支基(3)または座(2)に取り付けられている。
【0003】
また、特許文献1および特許文献2にも、同様の肘掛け取付装置が記載されているが、いずれも、肘掛支柱の内向き部分を、支基や座の下方からボルト締めすることが基本構造となっている。
【特許文献1】
特開平10−127410号公報
【特許文献2】
特開平10−117883号公報
【0004】
【発明が解決しようとする課題】
図11に示す従来の椅子においては、肘掛支柱(6)を支基(3)または座(2)に取り付ける際、座(2)の下方の狭い空間内で、上向きの取付ボルト(7)の位置合せや締めつけ作業を行なわなれければならず、無理な姿勢を余儀なくされ、組み付け時の作業性が悪い。
また、肘掛けに、着座者が凭れ掛かったりして、大きな荷重が掛ったとき、その荷重がそのまま、またはてこの原理で加増されて、取付ボルト(7)に対して抜け落ちる方向に作用するので、強力な取付ボルト(7)を用いなければ、ボルトの抜け落ちや折損等を招くおそれがある。
特許文献1および2に記載されているものにおいても同様である。
【0005】
本発明は、従来の技術が有する上記のような問題点に鑑み、肘掛けの取付け作業を、楽な作業姿勢で簡単に行なうことができるとともに、肘掛けに掛る大きな下向きの荷重が、直接取付ボルトに掛ることがなく、腕杆と肘掛支柱との接合部分を介して、軸線方向の引張り応力としてだけ取付ボルトに作用し、もって肘掛けを強固に取付けることができるようにした、椅子の肘掛け取付装置を提供することを目的としている。
【0006】
【課題を解決するための手段】
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)椅子の座の下方に設けた腕杆の外側面と、肘掛けを支持する肘掛支柱の下端部より内方を向く内向き部の内側面とのいずれか一方を山形の凸面とし、かつ他方を、前記凸面とほぼ補形をなすV溝状の凹面とし、前記凸面と凹面とを互いに密接させ、前記腕杆における凸面の山高部の中央部または凹面の谷の部分の中央部に、内部にねじ孔が穿設された突部を形成するとともに、この突部が嵌合しうる拡大孔と、それより小径の通孔と、通孔より大径で、かつ肘掛支柱における内向き部において外側方に向かって開口する挿入孔とを、ほぼ水平の一直線上に連続して肘掛け支柱の内向き部の内部に穿設し、連結ボルトの軸部を挿入孔から通孔に通して、前記連結ボルトの先端部に設けた雄ねじ部を突部のねじ孔に螺合することにより、前記腕杆と肘掛支柱とを螺締する。
【0007】
(2)上記(1)項において、肘掛支柱の下端部を、内方に向かって湾曲させることにより内向き部を形成し、この湾曲させた部分に、外側方に向かって開口する挿入孔を設ける。
【0008】
(3)上記(1)または(2)項において、肘掛支柱の外側面に開口する挿入孔に、その開口部分を閉塞する閉塞部材を着脱自在に設ける。
【0009】
【発明の実施の形態】
図1〜図6は、本発明の第1の実施形態を備える椅子を示すもので、図11におけるのと同一の各部材には、同一の符号を付して説明を省略する。
【0010】
座(2)の直下における支基(3)の両側面より外側方に向かって延出する腕杆(8)の先端部は、中空角筒状をなし、その基端部内の中心軸線上にはねじ孔(9)が穿設され、かつ腕杆(8)の先端面は、前後方向を向く中央部の稜線が外側方に突出する正面視横向き山形の凸面(10)としている。
【0011】
座(2)の両側における肘掛け(5)の下面中央部は、上下方向を向く直管状の肘掛支柱(11)の上端により支持され、各肘掛支柱(11)の対向面下部には、内方を向く管状の内向き部(11a)が連設され、その内端には、上記凸面(10)とほぼ補形をなす前後方向を向くV溝状の凹面(12)を形成するようにく字形に屈曲させた係合板(13)が固着されている。
【0012】
係合板(13)と肘掛支柱(11)の内側壁における内向き部(12)の軸線上には、後記する連結ボルト(14)の軸部(14a)よりも大径で、軸部(14a)の基端に連設された拡径頭部(14b)よりも小径の通孔(15)が穿設されている。
【0013】
支柱(11)の外側壁には、通孔(15)と同軸をなし、かつ拡径頭部(14b)よりも大径の挿入孔(16)が穿設されている。
【0014】
上述の装置において、腕杆(8)の凸面(10)に、係合板(13)の凹面(12)を嵌合し、ついで連結ボルト(14)を挿入孔(16)より通孔(15)に挿入して、軸部(14a)の先端部に形成した雄ねじ部(14c)をねじ孔(9)に螺合した後、挿入孔(16)より工具(図示省略)を差し込んで強く螺締すれば、連結ボルト(14)の拡径頭部(14b)が、肘掛支柱(11)の内面を押圧して、係合板(13)が腕杆(8)の先端の凸面(10)に圧接するので、肘掛支柱(11)は、腕杆(8)に強固に固定される。肘掛支柱(11)の下端の開口部と挿入孔(16)は、閉塞部材(17)により体裁よく閉塞される。
【0015】
図5および図6は、前記閉塞部材(17)を示すもので、肘掛支柱(11)の下端面と同一の外形とした合成樹脂製の倒立腕状の閉塞蓋(18)の上面に、肘掛支柱(11)の下端の開口部内に嵌合しうる内向きに弾性変形可能な複数の嵌合片(19)を突設するとともに、閉塞蓋(18)の周縁要所に、弾性変形可能な上向きの閉塞片(20)を一体的に突設し、かつその上端部内面に、上記挿入孔(16)内に嵌合可能なやや厚肉円形の係合突部(21)を設けてある。
【0016】
閉塞部材(17)の嵌合片(19)を、肘掛支柱(11)の下端の開口部内に下方より挿入すると、閉塞片(20)の係合突部(21)が挿入孔(16)に弾性係合して、閉塞部材(17)は肘掛支柱(11)から抜け止めされるとともに、挿入孔(16)は体裁よく隠蔽される。
【0017】
上記実施形態の閉塞部材(17)における閉塞片(20)は、支柱(11)の外側面と当接し、挿入孔(16)を係止突部(21)により外側より閉塞するようにしているが、閉塞片(20)を、支柱(11)の外側壁の内面と当接するように、閉塞蓋(18)より突設し、その外側面に、上記挿入孔(16)に内方より嵌合可能な係合突部(21)を設けてもよい。
【0018】
また、閉塞片(20)に設けた円形の係合突部(21)の代わりに、挿入孔(16)の下端縁に単に係止可能な突起とすることもある。
【0019】
図7〜図9は、本発明の第2の実施形態を備える椅子を示している。
なお、第1の実施形態におけるのと同一の部材については、同一の符号を付すに止め、詳細な説明は省略する。
【0020】
第2の実施形態においては、支基(3)の両側面より外側方に向かって延出する腕杆(30)(左方のものは図示略)の先端には、上下方向を向く中央部の稜線が外側方に突出する平面視山形の凸面(31)が形成されており、凸面(31)の稜線の中央部には、内部にねじ孔(32)が穿設された円筒状の突部(33)が形成されている。
支基(3)の両側面には、外上方に傾斜する傾斜面(3a)が形成されている。
【0021】
肘掛け(5)を支持する肘掛支柱(34)は、硬質の合成樹脂材料により、肘掛け(5)と一体的に形成されており、かつ下端部に、内方に向かってなだらかに湾曲する内向き部(34a)を有している。
【0022】
内向き部(34a)の先端面は、肘掛支柱(34)の装着状態において、支基(3)の傾斜面(3a)と密接するか、または微小間隙を隔てて互いに平行をなして対向するようにした傾斜面(35)としてある。
【0023】
内向き部(34a)の先端部中央には、腕杆(30)が嵌合しうるとともに、奥端に、腕杆(30)の凸面(31)とほぼ補形をなす上下方向を向くV溝状の凹面(36)が形成された凹部(37)が設けられている。
【0024】
凹面(36)の中央には、腕杆(30)の先端における突部(33)が嵌合しうる拡大孔(38)と、それより小径の通孔(39)と、通孔(39)より大径で、かつ肘掛支柱(34)の屈曲部において外側方に向かって開口する挿入口(40)とが、ほぼ水平の一直線上に連続して穿設されている。
【0025】
肘掛支柱(34)を椅子に装着するには、まず、肘掛支柱(34)の拡大孔(38)に腕杆(30)の突部(33)が嵌合し、かつ凹面(36)が凸面(31)に密接するようにして、凹部(37)を腕杆(30)に外嵌し、次いで、連結ボルト(14)の軸部(14a)を挿入孔(40)から通孔(39)に通して、雄ねじ部(14c)をねじ孔(32)に螺合し、締めつける。
【0026】
その後、挿入孔(40)に、着脱自在な閉塞部材(41)を装着し、連結ボルト(14)の拡径頭部(14b)を隠蔽する。
【0027】
連結ボルト(14)を締めつけると、凸面(31)と凹面(36)とが確実に位置決めされて密接し、肘掛支柱(34)は腕杆(30)に強固に固定される。
【0028】
肘掛け(5)に下向きの大きな荷重が掛ったとき、その荷重は、まず凸面(31)と凹面(36)との接合面に作用し、連結ボルト(14)には、軸線方向の引張り応力のみが作用するので、連結ボルト(14)が折れ曲がったり、抜け外れたりするおそれは小さい。
【0029】
また、肘掛支柱(34)の傾斜面(35)が支基(3)の傾斜面(3a)と当接することにより、肘掛支柱(34)が外下方へ回動しようとするのが強力に阻止される。
なお、本発明は、上記実施形態のみに限定されるものではなく、幾多の変化変形が可能である。
例えば、凸面(10)(31)を肘掛支柱(34)側に設け、かつ凹面(12)(36)を腕杆(8)(30)側に設けて、それらを互いに嵌合させるとともに、連結ボルトにより螺締してもよい。
また、凸面(10)(31)の稜線と凹面の溝とを、前上方または後上方等に、斜めに向けてもよい。
【0030】
【発明の効果】
請求項1記載の発明によると、腕杆に肘掛けを取り付ける際、山形の凸面と、V溝状の凹面とを突き合わせることにより、肘掛支柱の一方向の位置決めが簡単になされるとともに、椅子の側方の広い空間を利用して、ボルト締め作業を行なうことができるので、楽な姿勢で簡単に作業することができる。
【0031】
また、肘掛けに着座者が強く凭れ掛かっても、そのときの荷重は山形の凸面とV溝状の凹面との接合部分に掛り、水平をなす連結ボルトには、軸線方向に引張り応力が作用するだけであるので、連結ボルトが折れ曲がったり,抜け外れたりするおそれは小さく、肘掛支柱を強固に取付けることができる。
【0032】
さらに、連結ボルトの拡径頭部は挿入孔内に嵌入し、外部に突出しないので、体裁がよく、また、円筒状の突部の先端部を、V溝状の凹面を形成する両傾斜面に沿わせて移動させることにより、肘掛支柱の位置決めを簡単に行なうことができる。
【0033】
請求項3記載の発明によると、連結ボルトの拡径頭部を完全に隠蔽して、外観の向上を図ることができる。
【図面の簡単な説明】
【図1】 本発明の第1の実施形態を備える椅子の正面図である。
【図2】 同じく側面図である。
【図3】 図2のIII−III線に沿う拡大断面図である。
【図4】 図3のIV−IV線に沿う断面図である。
【図5】 閉塞部材の正面図である。
【図6】 同じく側面図である。
【図7】 本発明の第2の実施形態を備える椅子の要部分解斜視図である。
【図8】 同じく要部の拡大正面図である。
【図9】 図8のIX−IX線に沿う横断平面図である。
【図10】 図9のX−X線断面図である。
【図11】 従来の肘掛け椅子の正面図図である。
【符号の説明】
(1)脚
(2)座
(3)支基
(3a)傾斜面
(4)背もたれ
(5)肘掛け
(6)肘掛支柱
(6a)内向き部
(7)取付ボルト
(8)腕杆
(9)ねじ孔
(10)凸面
(11)肘掛支柱
(11a)内向き部
(12)凹面
(13)係合板
(14)連結ボルト
(14a)軸部
(14b)拡径頭部
(14c)雄ねじ部
(15)通孔
(16)挿入孔
(17)閉塞部材
(18)閉塞蓋
(19)嵌合片
(20)閉塞片
(21)係合突部
(30)腕杆
(31)凸面
(32)ねじ孔
(33)突部
(34)肘掛支柱
(34a)内向き部
(35)傾斜面
(36)凹面
(37)凹部
(38)拡大孔
(39)通孔
(40)挿入孔
(41)閉塞部材
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for easily and firmly attaching an armrest to a chair.
[0002]
[Prior art]
FIG. 11 shows a conventional general chair with an armrest, (1) is a leg, (2) is a seat, and (3) is provided at the upper end of the leg (1) and supports the seat (2). A support base, (4) is a backrest, (5) is an armrest, and (6) is an armrest strut whose upper part is substantially vertical and whose lower part curves inward. The armrest (5) has an inward end (6a) at the lower end of the armrest strut (6) with the upper end fixed at the center of the lower surface, and the lower surface of the support base (3) or the lower surface of the seat (2) from below. It is attached to the support base (3) or the seat (2) by screwing with the mounting bolt (7).
[0003]
Moreover, although the patent document 1 and the patent document 2 have also described the same armrest attachment apparatus, both are bolting the inward part of an armrest support | pillar from the downward direction of a support base or a seat, and a basic structure. It has become.
[Patent Document 1]
JP-A-10-127410 [Patent Document 2]
Japanese Patent Application Laid-Open No. 10-117883
[Problems to be solved by the invention]
In the conventional chair shown in FIG. 11, when the armrest strut (6) is attached to the support base (3) or the seat (2), the upward mounting bolt (7) is placed in a narrow space below the seat (2). Positioning and tightening work must be performed, and an unreasonable posture is required, and workability during assembly is poor.
In addition, when a large load is applied to the armrest on the armrest, the load is increased as it is or by the lever principle, and acts on the mounting bolt (7) in the direction of falling off. If a strong mounting bolt (7) is not used, the bolt may fall off or break.
The same applies to those described in Patent Documents 1 and 2.
[0005]
In view of the above-mentioned problems of the prior art, the present invention can easily perform armrest mounting work in an easy working posture, and a large downward load on the armrest is directly applied to the mounting bolt. An armrest mounting device for a chair that does not hang and acts on the mounting bolt only as a tensile stress in the axial direction through the joint part between the armband and the armrest strut, so that the armrest can be firmly attached. It is intended to provide.
[0006]
[Means for Solving the Problems]
According to the present invention, the above problem is solved as follows.
(1) One of the outer surface of the armband provided below the chair seat and the inner surface of the inward portion facing inward from the lower end of the armrest supporting the armrest is a chevron convex surface, and The other side is a V-groove-shaped concave surface that is substantially complementary to the convex surface, the convex surface and the concave surface are brought into close contact with each other, and the central portion of the convex peak portion or the concave valley portion of the armband, Forms a protrusion with a threaded hole inside, an enlarged hole into which this protrusion can fit, a smaller diameter through hole, a larger diameter than the through hole, and an inward portion of the armrest strut In the inside of the inward portion of the armrest strut continuously on a substantially horizontal straight line, the shaft portion of the connecting bolt is passed from the insertion hole to the through hole, By screwing a male threaded portion provided at the tip of the connecting bolt into the threaded hole of the protrusion, The rod and the armrest struts Nishishime.
[0007]
(2) In the above item (1), an inward portion is formed by bending the lower end portion of the armrest strut inward, and an insertion hole that opens outward is formed in the curved portion. Provide.
[0008]
(3) In the above item (1) or (2), a closing member for closing the opening portion is detachably provided in the insertion hole opened on the outer surface of the armrest strut.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
FIGS. 1-6 shows the chair provided with the 1st Embodiment of this invention, The same code | symbol is attached | subjected to each member same in FIG. 11 , and description is abbreviate | omitted.
[0010]
The tip of the armband (8) extending outward from both side surfaces of the support base (3) immediately below the seat (2) has a hollow rectangular tube shape, and is on the central axis in the base end. The screw hole (9) is drilled, and the front end surface of the armband (8) is a convex surface (10) that is laterally angled from the front when the center ridge line facing in the front-rear direction protrudes outward.
[0011]
The central part of the lower surface of the armrest (5) on both sides of the seat (2) is supported by the upper end of the straight tubular armrest strut (11) facing up and down, and the lower part of the opposite surface of each armrest strut (11) A tubular inwardly facing portion (11a) facing the surface is provided continuously, and a V-groove-shaped concave surface (12) facing in the front-rear direction which is substantially complementary to the convex surface (10) is formed at the inner end thereof. An engagement plate (13) bent in a letter shape is fixed.
[0012]
On the axis of the inward portion (12) on the inner wall of the engagement plate (13) and the armrest strut (11), the shaft portion (14a) has a larger diameter than the shaft portion (14a) of the connecting bolt (14) described later. ) Has a smaller diameter through-hole (15) than the enlarged-diameter head (14b) connected to the base end.
[0013]
An insertion hole (16) that is coaxial with the through hole (15) and has a diameter larger than that of the enlarged diameter head (14b) is formed in the outer wall of the support column (11).
[0014]
In the above-described apparatus, the concave surface (12) of the engagement plate (13) is fitted to the convex surface (10) of the armband (8), and then the connecting bolt (14) is inserted into the through hole (15) from the insertion hole (16). The male screw part (14c) formed at the tip of the shaft part (14a) is screwed into the screw hole (9), and then a tool (not shown) is inserted through the insertion hole (16) and screwed firmly. Then, the enlarged head (14b) of the connecting bolt (14) presses the inner surface of the armrest strut (11), and the engagement plate (13) is pressed against the convex surface (10) at the tip of the armrest (8). Therefore, the armrest strut (11) is firmly fixed to the armband (8). The opening at the lower end of the armrest strut (11) and the insertion hole (16) are obstructed by the closing member (17).
[0015]
5 and 6 show the closing member (17), and the armrest is placed on the upper surface of a synthetic resin inverted arm-shaped closing lid (18) having the same outer shape as the lower end surface of the armrest support (11). A plurality of inwardly elastically deformable fitting pieces (19) that can be fitted into the opening at the lower end of the support post (11) are projected, and elastically deformable at the peripheral edge of the closing lid (18). The upward closing piece (20) protrudes integrally, and a slightly thick circular engagement protrusion (21) that can be fitted into the insertion hole (16) is provided on the inner surface of the upper end. .
[0016]
When the fitting piece (19) of the closing member (17) is inserted into the opening at the lower end of the armrest strut (11) from below, the engagement protrusion (21) of the closing piece (20) is inserted into the insertion hole (16). With the elastic engagement, the closing member (17) is prevented from coming off from the armrest strut (11), and the insertion hole (16) is concealed with good appearance.
[0017]
The closing piece (20) in the closing member (17) of the embodiment is in contact with the outer surface of the support column (11), and the insertion hole (16) is closed from the outside by the locking projection (21). However, the closing piece (20) protrudes from the closing lid (18) so as to come into contact with the inner surface of the outer wall of the support column (11), and the outer surface is fitted into the insertion hole (16) from the inside. A mating engagement protrusion (21) may be provided.
[0018]
Further, instead of the circular engagement protrusion (21) provided on the closing piece (20), a protrusion that can be simply locked to the lower end edge of the insertion hole (16) may be used.
[0019]
7-9 has shown the chair provided with the 2nd Embodiment of this invention.
In addition, about the same member in 1st Embodiment, it stops only attaching | subjecting the same code | symbol, and abbreviate | omits detailed description.
[0020]
In the second embodiment, at the tip of the armband (30) (the left one is not shown) extending outward from both side surfaces of the support base (3), a central portion that faces vertically A convex surface (31) having a mountain shape with a ridge line protruding outward is formed, and a cylindrical protrusion having a screw hole (32) drilled therein is formed at the center of the ridge line of the convex surface (31). A portion (33) is formed.
On both side surfaces of the support base (3), inclined surfaces (3a) that are inclined upward and outward are formed.
[0021]
The armrest strut (34) that supports the armrest (5) is integrally formed with the armrest (5) by a hard synthetic resin material, and inwardly curves inwardly at the lower end. Part (34a).
[0022]
The tip surface of the inward portion (34a) is in close contact with the inclined surface (3a) of the support base (3) or in parallel with each other with a minute gap in the mounted state of the armrest strut (34). An inclined surface (35) is provided.
[0023]
At the center of the tip of the inward portion (34a), the armband (30) can be fitted, and at the back end, V is oriented in a vertical direction that is substantially complementary to the convex surface (31) of the armband (30). A concave portion (37) having a groove-like concave surface (36) is provided.
[0024]
In the center of the concave surface (36), an enlarged hole (38) into which the protrusion (33) at the tip of the armband (30) can be fitted, a through hole (39) having a smaller diameter, and a through hole (39) An insertion opening (40) having a larger diameter and opening outward at the bent portion of the armrest strut (34) is continuously drilled on a substantially horizontal straight line.
[0025]
To attach the armrest strut (34) to the chair, first, the projection (33) of the armrest (30) is fitted into the enlarged hole (38) of the armrest strut (34), and the concave surface (36) is convex. (31) so that the recess (37) is externally fitted to the armband (30), and then the shaft portion (14a) of the connecting bolt (14) is inserted from the insertion hole (40) to the through hole (39). The male screw part (14c) is screwed into the screw hole (32) and tightened.
[0026]
Thereafter, a detachable closing member (41) is attached to the insertion hole (40) to conceal the enlarged diameter head (14b) of the connecting bolt (14).
[0027]
When the connecting bolt (14) is tightened, the convex surface (31) and the concave surface (36) are securely positioned and in close contact with each other, and the armrest strut (34) is firmly fixed to the armband (30).
[0028]
When a large downward load is applied to the armrest (5), the load first acts on the joint surface between the convex surface (31) and the concave surface (36), and only the tensile stress in the axial direction is applied to the connecting bolt (14). Therefore, there is little possibility that the connecting bolt (14) bends or comes off.
[0029]
In addition, when the inclined surface (35) of the armrest strut (34) is in contact with the inclined surface (3a) of the support base (3), the armrest strut (34) is strongly prevented from trying to rotate outward and downward. Is done.
In addition, this invention is not limited only to the said embodiment, Many change deformation | transformation is possible.
For example, the convex surfaces (10) and (31) are provided on the armrest strut (34) side, and the concave surfaces (12) and (36) are provided on the armrests (8) and (30) side so that they can be fitted together and connected. You may screw with a bolt.
Further, the ridge lines of the convex surfaces (10) and (31) and the concave grooves may be directed obliquely forward front or rear upper or the like.
[0030]
【The invention's effect】
According to the first aspect of the present invention, when the armrest is attached to the armband, the one-sided positioning of the armrest strut can be easily performed by abutting the convex surface of the mountain shape with the concave surface of the V-groove, and the chair Since the bolt tightening work can be performed using a wide side space, the work can be easily performed in an easy posture.
[0031]
Also, even if the seated person leans strongly on the armrest, the load at that time is applied to the joint between the convex surface of the mountain shape and the concave surface of the V-groove, and tensile stress acts in the axial direction on the horizontal connecting bolt. Therefore, the possibility that the connecting bolt bends or comes off is small, and the armrest strut can be firmly attached.
[0032]
Furthermore, the enlarged head portion of the connecting bolt is inserted into the insertion hole and does not protrude to the outside, so that the appearance is good, and both the inclined surfaces that form the V-groove concave surface at the tip of the cylindrical protrusion The armrest strut can be easily positioned by moving it along the axis.
[0033]
According to the third aspect of the present invention, it is possible to completely conceal the enlarged head of the connecting bolt and improve the appearance.
[Brief description of the drawings]
FIG. 1 is a front view of a chair provided with a first embodiment of the present invention.
FIG. 2 is a side view of the same.
FIG. 3 is an enlarged cross-sectional view taken along line III-III in FIG.
4 is a cross-sectional view taken along line IV-IV in FIG.
FIG. 5 is a front view of a closing member.
FIG. 6 is a side view of the same.
FIG. 7 is an exploded perspective view of a main part of a chair provided with a second embodiment of the present invention.
FIG. 8 is an enlarged front view of the main part of the same.
9 is a cross-sectional plan view taken along line IX-IX in FIG.
10 is a cross-sectional view taken along line XX in FIG.
FIG. 11 is a front view of a conventional armchair.
[Explanation of symbols]
(1) Leg
(2) Seat
(3) Support base
(3a) Inclined surface
(4) Backrest
(5) Armrest
(6) Armrest strut
(6a) Inward facing part
(7) Mounting bolt
(8) Arms
(9) Screw hole
(10) Convex surface
(11) Armrest strut
(11a) Inward part
(12) Concave
(13) Engagement plate
(14) Connecting bolt
(14a) Shaft
(14b) Expanded head
(14c) Male thread
(15) Through hole
(16) Insertion hole
(17) Closure member
(18) Closure lid
(19) Mating piece
(20) Blocking piece
(21) Engagement protrusion
(30) Arms
(31) Convex surface
(32) Screw hole
(33) Projection
(34) Armrest strut
(34a) Inward portion
(35) Inclined surface
(36) Concave
(37) Recess
(38) Enlarged hole
(39) Through hole
(40) Insertion hole
(41) Closure member

Claims (3)

椅子の座の下方に設けた腕杆の外側面と、肘掛けを支持する肘掛支柱の下端部より内方を向く内向き部の内側面とのいずれか一方を山形の凸面とし、かつ他方を、前記凸面とほぼ補形をなすV溝状の凹面とし、前記凸面と凹面とを互いに密接させ、前記腕杆における凸面の山高部の中央部または凹面の谷の部分の中央部に、内部にねじ孔が穿設された突部を形成するとともに、この突部が嵌合しうる拡大孔と、それより小径の通孔と、通孔より大径で、かつ肘掛支柱における内向き部において外側方に向かって開口する挿入孔とを、ほぼ水平の一直線上に連続して肘掛け支柱の内向き部の内部に穿設し、連結ボルトの軸部を挿入孔から通孔に通して、前記連結ボルトの先端部に設けた雄ねじ部を突部のねじ孔に螺合することにより、前記腕杆と肘掛支柱とを螺締したことを特徴とする椅子の肘掛け取付装置。One of the outer surface of the armband provided below the seat of the chair and the inner surface of the inward portion facing inward from the lower end of the armrest support that supports the armrest is a mountain-shaped convex surface, and the other, A concave surface having a V-groove shape that is substantially complementary to the convex surface, the convex surface and the concave surface are brought into close contact with each other, and an internal screw is formed at the central portion of the convex peak portion or the concave valley portion of the armband. A projecting part with a hole is formed, an enlarged hole into which the projecting part can be fitted, a smaller diameter through-hole, a larger diameter than the through-hole, and an outer side in the inward part of the armrest strut An insertion hole that is open toward the inner side of the armrest strut in an inwardly continuous portion on a substantially horizontal straight line, the shaft portion of the connection bolt is passed through the insertion hole, and the connection bolt By screwing a male threaded portion provided at the tip of the arm into the threaded hole of the protrusion, Armrest mounting device of the chair, characterized in that the Nishishime the armrest pillar. 肘掛支柱の下端部を、内方に向かって湾曲させることにより内向き部を形成し、この湾曲させた部分に、外側方に向かって開口する挿入孔を設けた請求項1記載の椅子の肘掛け取付装置。  The armrest of the chair according to claim 1, wherein an inward portion is formed by curving the lower end portion of the armrest strut inward, and an insertion hole that opens outward is provided in the curved portion. Mounting device. 肘掛支柱の外側面に開口する挿入孔に、その開口部分を閉塞する閉塞部材を着脱自在に設けた請求項1または2記載の椅子の肘掛け取付装置。  The armrest mounting device for a chair according to claim 1 or 2, wherein a closing member that closes the opening portion is detachably provided in an insertion hole that opens on the outer surface of the armrest column.
JP2000135967A 1999-11-09 2000-05-09 Chair armrest mounting device Expired - Fee Related JP4477743B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000135967A JP4477743B2 (en) 1999-11-09 2000-05-09 Chair armrest mounting device

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP11-318835 1999-11-09
JP31883599 1999-11-09
JP2000135967A JP4477743B2 (en) 1999-11-09 2000-05-09 Chair armrest mounting device

Related Child Applications (2)

Application Number Title Priority Date Filing Date
JP2009184198A Division JP5059814B2 (en) 1999-11-09 2009-08-07 Chair armrest mounting device
JP2009184199A Division JP4927128B2 (en) 1999-11-09 2009-08-07 Chair armrest mounting device

Publications (2)

Publication Number Publication Date
JP2001197957A JP2001197957A (en) 2001-07-24
JP4477743B2 true JP4477743B2 (en) 2010-06-09

Family

ID=26569529

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000135967A Expired - Fee Related JP4477743B2 (en) 1999-11-09 2000-05-09 Chair armrest mounting device

Country Status (1)

Country Link
JP (1) JP4477743B2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4874534B2 (en) * 2004-10-05 2012-02-15 株式会社岡村製作所 Chair elbow frame mounting structure
JP5021931B2 (en) * 2005-12-14 2012-09-12 株式会社イトーキ Chair
JP4936269B2 (en) * 2006-01-19 2012-05-23 コクヨ株式会社 Connecting structure of armpit
JP4913185B2 (en) * 2009-08-07 2012-04-11 株式会社岡村製作所 Chair elbow frame mounting structure
JP5068790B2 (en) * 2009-08-07 2012-11-07 株式会社岡村製作所 Chair elbow frame mounting structure

Also Published As

Publication number Publication date
JP2001197957A (en) 2001-07-24

Similar Documents

Publication Publication Date Title
JP2006280454A (en) Chair with hanger
JP4477743B2 (en) Chair armrest mounting device
US6648359B2 (en) Adjustable connection device for connecting parts of wheel chairs
JP4927128B2 (en) Chair armrest mounting device
JP4652824B2 (en) Chair leg frame structure
JP2009172125A (en) Fixing device of backrest of chair
JP4874534B2 (en) Chair elbow frame mounting structure
JP2002136388A (en) Backrest structure for chair
JP5014675B2 (en) Armrest frame mounting structure in a chair
JP5068790B2 (en) Chair elbow frame mounting structure
JP4877936B2 (en) Headrest device
JP4855684B2 (en) Chair
JP5432494B2 (en) Bolt, rotating shaft and rotating connection structure
JP2006187538A (en) Structure for fixing armrest of chair
JP4889946B2 (en) Chair backrest structure
JP4256234B2 (en) Armrest device in stacked chair
JP2002136387A (en) Back plate mounting structure for chair
JP4855685B2 (en) Chair backrest mounting structure
JP4913185B2 (en) Chair elbow frame mounting structure
JP4149758B2 (en) Chair headrest device
JP5940915B2 (en) Chair
WO1993001420A1 (en) Means for connecting furniture components
JP3528528B2 (en) Chair armrest equipment
JP2007296077A (en) Backrest support frame of chair
KR20090007511A (en) Chair having chin supporting assembly

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20070413

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20090619

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20090630

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20090807

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20091020

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20091201

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20100309

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20100312

R150 Certificate of patent or registration of utility model

Ref document number: 4477743

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130319

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130319

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140319

Year of fee payment: 4

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S533 Written request for registration of change of name

Free format text: JAPANESE INTERMEDIATE CODE: R313533

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

LAPS Cancellation because of no payment of annual fees