JP3637753B2

JP3637753B2 - Chair armrest device

Info

Publication number: JP3637753B2
Application number: JP34587797A
Authority: JP
Inventors: 敦郎邑上; 信治井上
Original assignee: 株式会社イトーキクレビオ
Priority date: 1997-11-30
Filing date: 1997-11-30
Publication date: 2005-04-13
Anticipated expiration: 2017-11-30
Also published as: JPH11155688A

Description

【０００１】
【発明の属する技術分野】
本発明は、椅子の肘掛け装置に係わり、更に詳しくは肘掛け部が上下角度調節可能な椅子の肘掛け装置に関する。
【０００２】
【従来の技術】
従来、椅子の座部又は脚部から立ち上がった支持部に対して肘掛け部が上下角度調節可能なものは既に提供されている。そして、肘掛け部の角度調節機構としては、支持部の上端に肘掛け部の中央部を傾動可能に枢着するとともに、支持部の前後一端部に複数の係合凹部を上下方向に所定間隔で形成し、該係合凹部に肘掛け部の前後一端部に設けた前後移動可能な係合部を弾性的に嵌合して多段階に角度調節するものがある。
【０００３】
しかし、従来の肘掛け部の角度調節機構は、操作部を肘掛け部の前部下面に露出させているため、肘掛け部の下部カバー部材に係合部を設けた操作レバーを枢着し、該操作レバーの回動操作によって係合凹部に対して係合部を係脱する構造である。そのため、肘掛け部を上部カバー部材と下部カバー部材を接合するとともに、内部に設けた操作レバーの係合部と支持部に設けた係合凹部とからなる角度調節機構の組立作業が難しく、また位置精度も要求されるのである。更に、操作レバーを弾性付勢するための引張りコイルばね又はキックばねといった弾性体を装着する作業も難しいといった問題もある。
【０００４】
【発明が解決しようとする課題】
本発明が前述の状況に鑑み、解決しようとするところは、肘掛け部の上下角度調節機構の構造を簡略化するとともに、簡単に組立てることが可能で、もってコスト低減化が図ることが可能であり、併せて操作性にも優れた椅子の肘掛け装置を提供する点にある。
【０００５】
【課題を解決するための手段】
本発明は、前述の課題解決のために、座部又は脚部から立ち上がった支持部に対して肘掛け部が上下角度調節可能な椅子の肘掛け装置であって、前記支持部の上端に肘掛け部内に固定した傾動部材を水平な支軸にて上下傾動可能に連結するとともに、前記支持部に上下に複数の係合凹部を形成し、該係合凹部の何れかに係合して肘掛け部を所定角度に維持するストッパー手段とその操作手段を前記傾動部材に設けてなる椅子の肘掛け装置を構成した。
【０００６】
具体的には、前記傾動部材の前部に水平な回動軸にて支持された回動部材の中間部を取付けるとともに、該回動部材の遊端側一端に前記係合凹部に係合する係合部を設けてストッパー手段となし、回動部材の遊端側他端に肘掛け部の前部に露出させた操作部を設けて操作手段となし、前記係合部が係合凹部に係合する回転方向に回動部材を弾性付勢してなるのである。ここで、前記操作部を肘掛け部の下面又は側面に露出させてなるのであり、特に肘掛け部の横幅及び厚さが大きい場合には、操作性を向上させるために該操作部を肘掛け部の側面に設けることが好ましい。
【０００７】
また、前記傾動部材の前部に水平な回動軸にて支持された回動部材の中間部を取付けるとともに、該回動部材の遊端側一端に前記係合凹部に係合する係合部を設けてストッパー手段となし、回動部材の遊端側他端に操作部を設けるとともに、肘掛け部の前部側面に露出させた押しボタンの先端に形成した傾斜面を前記操作部に当止して操作手段となし、前記係合部が係合凹部に係合する回転方向に回動部材を弾性付勢してなるものである。
【０００８】
【発明の実施の形態】
次に本発明の実施形態を添付図面に基づき更に詳細に説明する。図１〜図４は本発明に肘掛け装置の第１実施形態を示し、図５〜図７は本発明の第２実施形態を示し、図８〜図１０は本発明の第３実施形態を示し、図２、図６及び図９は肘掛け部を略水平に設定した状態、図３及び図７は肘掛け部を前上がりに傾斜させて設定した状態、図４は要部の分解斜視図を示し、図中符号１は椅子の脚部、２は座部、３は背凭れ部、４は肘掛け装置、５は支持部、６は肘掛け部をそれぞれ示している。
【０００９】
本発明の実施形態に係る肘掛け装置４は、座部２又は脚部１から立ち上がった支持部５に対して肘掛け部６を高さ調節可能且つ上下角度調節可能に設けたものである。前記支持部５は、座部２に固定した支持アーム７の上部に、中空状の昇降体８を上下スライド可能に外嵌した構造を有する。そして、前記支持アーム７と昇降体８との間には、支持アーム７に対して昇降体８の高さを調節し且つその高さを維持するための高さ調節機構が設けられている。
【００１０】
先ず、本発明の第１実施形態の肘掛け装置４を図１〜図４に基づいて更に詳しく説明する。本発明の肘掛け装置４は、前記支持部５の上端に肘掛け部６内に固定した傾動部材９を水平な支軸１０にて上下傾動可能に連結するとともに、前記支持部５に上下に複数の係合凹部１１，…を形成し、該係合凹部１１の何れかに係合して肘掛け部６を所定角度に維持するストッパー手段１２とその操作手段１３を前記傾動部材９に設けてなるものである。
【００１１】
更に詳しくは、前記肘掛け部６は、合成樹脂製の上部カバー部材１４と下部カバー部材１５とを接合して中空状に形成し、該上部カバー部材１４には下面に多数の補強リブ１６，…と前記傾動部材９を取付ける台座１７，１７を一体成形し、前記下部カバー部材１５には前記支持部５を構成する昇降体８を受け入れる開口１８を形成している。そして、金属板からなる前記補強板１９を前記補強リブ１６，…の下縁に接触状態で前記台座１７，１７にネジ止め固定し、肘掛け部６としての強度と剛性を確保し、該補強板１９の下面には前記傾動部材９を一体的に固着している。
【００１２】
前記傾動部材９は、金属板を折曲形成したものであり、上面板２０の両側に側面板２１，２１を下向きに折曲し、両側面板２１，２１の間に前記昇降体８の上部を収容できるようになっている。そして、前記傾動部材９の側面板２１の後部には前記支軸１０を挿通する軸孔２２を形成を形成し、また上面板２０の前部は下方へ折曲して当止板２３を形成し、該当止板２３の下部には横長のスリット孔２４を形成している。また、前記当止板２３よりも前方で両側面板２１，２１の上部に通孔２５，２５を形成している。
【００１３】
そして、金属板をく字形に折曲形成した回動部材２６の中間部を前記傾動部材９の前部に回動可能に取付ける。例えば、前記回動部材２６の屈曲部に固着した軸筒２７を前記傾動部材９の両側面板２１，２１の上部間に配設するとともに、両通孔２５，２５に挿通した水平な回動軸２８に回動可能に挿通して取付ける。そして、前記回動部材２６の遊端側一端に、前記スリット孔２４を貫通して前記係合凹部１１に係合する係合部２９を直角に折曲形成して前記ストッパー手段１２となし、また回動部材２６の遊端側他端に肘掛け部６の下部カバー部材１５のに開口した操作孔３０から下面に露出させた操作部３１を設けて前記操作手段１３となしている。更に、前記係合部２９が係合凹部１１に係合する回転方向に回動部材２６を弾性付勢すべく、前記回動部材２６と傾動部材９の側面板２１との間に引張りコイルばね３２を介装している。尚、引張りコイルばね３２の代わりにキックばねを用い、該キックばねのコイル部を前記回動軸２８に巻回し、両弾性脚を回動部材２６と傾動部材９の側面板２１に係止しても良い。
【００１４】
そして、前記傾動部材９にストッパー手段１２及び操作手段１３を構成する回動部材２６を装着した状態で、該傾動部材９を直接又は本実施形態のように補強板１９を介して肘掛け部６の上部カバー部材１４に取付け、それから下部カバー部材１５の開口１８に前記昇降体８の上部を挿通した状態で、前記傾動部材９の両側面板２１，２１間に昇降体８の上部を受け入れ、該側面板２１，２１に形成した軸孔２２，２２と該昇降体８の上端後部に形成した貫通孔３３に前記支軸１０を挿通して取付け、最後に下部カバー部材１５を持ち上げて上部カバー部材１４に嵌合又はネジ止め等の適宜な固定手段にて接合して組立てるのである。
【００１５】
しかして、前記肘掛け部６の下部カバー部材１５の角孔３０から下面に露出した操作部３１を押し込むと、回動部材２６が回動軸２８を中心に回転し、前記係合部２９が昇降体８の上部前面側に形成した前記係合凹部１１から外れ、肘掛け部６の前部が支軸１０を中心に上下に角度調節可能な状態となり、肘掛け部６を所定角度に設定した後、操作部３１から指を離せば、引張りコイルばね３２の弾性付勢力によって前記係合部２９が何れかの係合凹部１１に係合し、設定角度を維持するのである。
【００１６】
ここで、図２は肘掛け部６を略水平状態となした状態で、通常は肘掛け部６の前部が最も下降した状態であり、図３は肘掛け部６の前部を上昇させて傾斜した状態である。肘掛け部６の角度は、着座者の体格に応じて座部２の高さと肘掛け部６の高さを調節した後、該肘掛け部６の上面が机の前縁に向くように調節することが望ましい。肘掛け部６の角度を前述のように設定した場合、該肘掛け部６の上面に肘を載せ、手首を机天板に載せた状態で、ワープロやパソコンの入力手段の一つであるマウスを操作することができるので、その操作が楽になるのである。また、キーボードを操作する場合も同様である。
【００１７】
次に、本発明の肘掛け装置４の第２実施形態を図５〜図７に基づいて更に詳しく説明する。本実施形態の肘掛け装置４は、第１実施形態と基本的には共通する構造であり、同一構成には同一符号を付してその説明は省略する。ここでは、第１実施形態と異なる構成についてのみ説明する。本実施形態の肘掛け装置４は、前記傾動部材９として、上面板２０の両側に側面板２１，２１を折曲形成した単純な形状とし、該両側面板２１，２１の後部を前述の如く支軸１０にて昇降体８の上端後部に上下回動可能に枢着するとともに、両側面板２１，２１の前部に回動軸２８にて側面視く字形の回動部材２６の中間部の屈曲部を回動可能に支持している。また、前記昇降体８の上端前部には、横長の複数の係合凹部１１，…を上下に設け且つ両側に貫通させて設けるとともに、各係合凹部１１の後端を遊動部３４で連通している。
【００１８】
そして、ストッパー手段１２として、前記回動部材２６の遊端側一端の先端部に長形のリング部３５を形成し、該リング部３５には前記係合部２９を構成する係止ピン２９Ａを挿通するとともに、該係止ピン２９Ａを前記係合凹部１１内に挿通して構成している。また、操作手段１３として、前記回動部材２６の遊端側他側の先端部に直角に側方へ延設した操作部３１を形成し、該操作部３１を肘掛け部６の側面に開口した操作孔３０から露出させている。尚、前記操作部３１の先端露出部には適宜つまみを設けることが好ましい。また、前記回動部材２６と傾動部材９の側面板２１の前端間に引張りコイルばね３２を介装し、係合部２９が係合凹部１１に係合する回転方向に回動部材２６を弾性付勢している。
【００１９】
本実施形態の場合には、肘掛け部６の前部側面に露出した操作部３１を持ち上げると、回動部材２６が回動軸２８を中心として回転し、前記係合部２９を構成する係止ピン２９Ａがリング部３５の内部を移動しながら係合凹部１１から外れて遊動部３４に位置するようになり、その状態で前記支軸１０を中心として肘掛け部６の前部を上下回転させて所定の角度に設定した後、操作部３１から指を離せば、引張りコイルばね３２の弾性付勢力によって再度係合部２９が何れかの係合凹部１１に係合して設定角度が維持されるのである。
【００２０】
最後に、図８〜図１０に基づいて本発明の第３実施形態の肘掛け装置４を説明する。本実施形態の肘掛け装置４は、第１実施形態と基本的構造は同一であるが、操作手段１３のみが異なる構造を有するものである。本実施形態の操作手段１３は、前記回動部材２６の遊端側他端に操作部３１を設けるとともに、肘掛け部６の前部側面に設けた操作孔３０から露出させた押しボタン３６の先端に形成した楔形の傾斜面３７を前記操作部３１に当止し、押しボタン３６を押し込みことによって操作部３１を持ち上げ、もって回動部材２６を回転させて係合部２９が係合凹部１１から外れるようにしたものである。その他の構成は前記同様であるので、同一構成には同一符号を付してその説明は省略する。
【００２１】
【発明の効果】
以上にしてなる本発明の椅子の肘掛け装置は、肘掛け部の上下角度調節機構の主要部を肘掛け部の内部に固定する傾動部材に組み込んでいるので組立てが簡単であり、大幅な製造コスト低減化が図れるとともに、肘掛け部の上下角度調節を簡単に行うことができ、例えば、机天板に載置したワープロやパソコンのマウスやキーボードを操作する場合、肘掛け部の手口の高さを机天板と略同じ高さに設定して肘掛け部の前端上面を机天板の手前縁に連続させて手首部分の安楽な支持状態を実現した場合でも、肘掛け部に角度をつけることによって、肩から肘までの最適距離を確保できるのである。
【図面の簡単な説明】
【図１】本発明の第１実施形態に係る肘掛け装置を適用した椅子の側面図である。
【図２】同じく肘掛け部が略水平状態の場合の要部の拡大縦断面図である。
【図３】同じく肘掛け部が傾斜状態の場合の要部の拡大縦断面図である。
【図４】同じく分解斜視図である。
【図５】本発明の第２実施形態に係る肘掛け装置を適用した椅子の側面図である。
【図６】同じく肘掛け部が略水平状態の場合の要部の部分拡大縦断面図である。
【図７】同じく肘掛け部が傾斜状態の場合の要部の部分拡大縦断面図である。
【図８】本発明の第３実施形態に係る肘掛け装置を適用した椅子の側面図である。
【図９】同じく要部の部分拡大断面図である。
【図１０】同じく要部の部分拡大断面図である。
【符号の説明】
１脚部２座部
３背凭れ部４肘掛け装置
５支持部６肘掛け部
７支持アーム８昇降体
９傾動部材１０支軸
１１係合凹部１２ストッパー手段
１３操作手段１４上部カバー部材
１５下部カバー部材１６補強リブ
１７台座１８開口
１９補強板２０上面板
２１側面板２２軸孔
２３当止板２４スリット孔
２５通孔２６回動部材
２７軸筒２８回動軸
２９係合部３０操作孔
３１操作部３２引張りコイルばね
３３貫通孔３４遊動部
３５リング部３６押しボタン
３７傾斜面[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an armrest device for a chair, and more particularly to an armrest device for a chair whose armrest portion can be adjusted in the vertical angle.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there has already been provided an armrest portion whose vertical angle can be adjusted with respect to a support portion rising from a seat portion or a leg portion of a chair. As the angle adjustment mechanism of the armrest part, the central part of the armrest part is pivotably attached to the upper end of the support part, and a plurality of engagement recesses are formed at predetermined intervals in the front and rear end parts of the support part. In addition, there are some which adjust the angle in multiple stages by elastically fitting an engaging portion which is provided at one end portion of the armrest in the front and rear ends to the engaging recess.
[0003]
However, since the conventional angle adjustment mechanism of the armrest portion exposes the operation portion on the lower surface of the front portion of the armrest portion, an operation lever provided with an engagement portion is pivotally attached to the lower cover member of the armrest portion, and the operation is performed. This is a structure in which the engaging portion is engaged with and disengaged from the engaging concave portion by rotating the lever. Therefore, it is difficult to assemble the angle adjustment mechanism consisting of the engaging portion of the operation lever provided inside and the engaging recess provided in the support portion while joining the upper cover member and the lower cover member to the armrest portion. Precision is also required. Further, there is a problem that it is difficult to attach an elastic body such as a tension coil spring or a kick spring for elastically urging the operation lever.
[0004]
[Problems to be solved by the invention]
In view of the above-described situation, the present invention intends to solve the problem of simplifying the structure of the vertical angle adjustment mechanism of the armrest part and easily assembling it, thereby reducing the cost. In addition, the present invention is to provide a chair armrest device having excellent operability.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention is an armrest device for a chair in which an armrest portion can be vertically adjusted with respect to a support portion rising from a seat portion or a leg portion. A fixed tilting member is connected to a horizontal support shaft so as to be tiltable up and down, and a plurality of engaging recesses are formed in the support portion in the vertical direction, and the armrest portion is predetermined by engaging with any of the engaging recesses. An armrest device for a chair is provided in which stopper means for maintaining the angle and its operating means are provided on the tilting member.
[0006]
Specifically, an intermediate portion of the rotating member supported by a horizontal rotating shaft is attached to the front portion of the tilting member, and the free end side end of the rotating member is engaged with the engaging recess. An engaging portion is provided as a stopper means, and an operating portion exposed at the front end of the armrest portion is provided at the other end of the free end of the rotating member as an operating means, and the engaging portion is engaged with the engaging recess. The rotating member is elastically biased in the rotating direction to be combined. Here, the operation portion is exposed on the lower surface or side surface of the armrest portion, and particularly when the width and thickness of the armrest portion are large, the operation portion is arranged on the side surface of the armrest portion in order to improve operability. It is preferable to provide in.
[0007]
Also, an intermediate portion of a rotating member supported by a horizontal rotating shaft is attached to the front portion of the tilting member, and an engaging portion that engages with the engaging recess at one free end side of the rotating member A stopper means is provided, and an operating portion is provided at the other end of the free end side of the rotating member, and an inclined surface formed on the front end of the push button exposed on the front side surface of the armrest is stopped against the operating portion. Thus, the rotating member is elastically biased in the rotation direction in which the engaging portion engages with the engaging recess.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. 1 to 4 show a first embodiment of an armrest device according to the present invention, FIGS. 5 to 7 show a second embodiment of the present invention, and FIGS. 8 to 10 show a third embodiment of the present invention. 2, 6 and 9 show a state in which the armrest portion is set substantially horizontally, FIGS. 3 and 7 show a state in which the armrest portion is tilted forwardly, and FIG. 4 shows an exploded perspective view of the main part. In the figure, reference numeral 1 denotes a leg portion of the chair, 2 denotes a seat portion, 3 denotes a backrest portion, 4 denotes an armrest device, 5 denotes a support portion, and 6 denotes an armrest portion.
[0009]
The armrest device 4 according to the embodiment of the present invention is such that the armrest portion 6 can be adjusted in height and vertically adjustable with respect to the support portion 5 rising from the seat portion 2 or the leg portion 1. The support portion 5 has a structure in which a hollow elevating body 8 is externally fitted on an upper portion of a support arm 7 fixed to the seat portion 2 so as to be vertically slidable. A height adjusting mechanism is provided between the support arm 7 and the lifting body 8 to adjust the height of the lifting body 8 with respect to the support arm 7 and to maintain the height.
[0010]
First, the armrest device 4 according to the first embodiment of the present invention will be described in more detail with reference to FIGS. In the armrest device 4 of the present invention, a tilting member 9 fixed in the armrest portion 6 is connected to an upper end of the support portion 5 so as to be vertically tiltable by a horizontal support shaft 10, and a plurality of upper and lower portions are connected to the support portion 5. The engaging member 11 is formed with a stopper means 12 for engaging with any of the engaging recessed parts 11 to maintain the armrest part 6 at a predetermined angle and its operating means 13 on the tilting member 9. It is.
[0011]
More specifically, the armrest portion 6 is formed in a hollow shape by joining an upper cover member 14 and a lower cover member 15 made of synthetic resin, and the upper cover member 14 has a plurality of reinforcing ribs 16 on the lower surface. The pedestals 17 and 17 for mounting the tilting member 9 are integrally formed, and the lower cover member 15 is formed with an opening 18 for receiving the elevating body 8 constituting the support portion 5. Then, the reinforcing plate 19 made of a metal plate is screwed and fixed to the pedestals 17 and 17 in contact with the lower edges of the reinforcing ribs 16 to secure the strength and rigidity of the armrest portion 6. The tilting member 9 is integrally fixed to the lower surface of 19.
[0012]
The tilting member 9 is formed by bending a metal plate, and the side plates 21 and 21 are bent downward on both sides of the top plate 20, and the upper part of the lifting body 8 is placed between the side plates 21 and 21. It can be accommodated. A shaft hole 22 through which the support shaft 10 is inserted is formed in the rear portion of the side plate 21 of the tilting member 9, and a front stop plate 23 is formed by bending the front portion of the top plate 20 downward. In addition, a horizontally long slit hole 24 is formed below the corresponding stop plate 23. Further, through holes 25 and 25 are formed in front of the stopper plate 23 and above the side plates 21 and 21.
[0013]
And the intermediate part of the rotation member 26 which bent and formed the metal plate in the square shape is attached to the front part of the said tilting member 9 so that rotation is possible. For example, a shaft cylinder 27 fixed to the bent portion of the rotating member 26 is disposed between the upper portions of the side surface plates 21 and 21 of the tilting member 9, and a horizontal rotating shaft inserted into the through holes 25 and 25. It is inserted into 28 so as to be rotatable. And, at the free end side end of the rotating member 26, an engaging portion 29 that penetrates the slit hole 24 and engages with the engaging recess 11 is bent at a right angle to form the stopper means 12. In addition, an operation portion 31 exposed on the lower surface from an operation hole 30 opened in the lower cover member 15 of the armrest portion 6 is provided at the other end of the rotating member 26 on the free end side to form the operation means 13. Further, a tension coil spring is provided between the rotating member 26 and the side plate 21 of the tilting member 9 so as to elastically bias the rotating member 26 in the rotation direction in which the engaging portion 29 engages with the engaging recess 11. 32 is interposed. A kick spring is used in place of the tension coil spring 32, and the coil portion of the kick spring is wound around the rotating shaft 28, and both elastic legs are locked to the rotating member 26 and the side plate 21 of the tilting member 9. May be.
[0014]
Then, in a state where the rotation member 26 constituting the stopper means 12 and the operation means 13 is mounted on the tilting member 9, the tilting member 9 is directly attached to the armrest portion 6 via the reinforcing plate 19 as in the present embodiment. The upper part of the elevating body 8 is received between the side plates 21, 21 of the tilting member 9 with the upper part of the elevating body 8 being inserted into the opening 18 of the lower cover member 15 and attached to the upper cover member 14. The support shaft 10 is inserted through and attached to the shaft holes 22 and 22 formed in the face plates 21 and 21 and the through hole 33 formed in the rear upper end of the elevating body 8, and finally the lower cover member 15 is lifted and the upper cover member 14 is lifted. Are assembled by being joined by appropriate fixing means such as fitting or screwing.
[0015]
Then, when the operating portion 31 exposed on the lower surface is pushed in from the square hole 30 of the lower cover member 15 of the armrest portion 6, the rotating member 26 rotates about the rotating shaft 28, and the engaging portion 29 moves up and down. After disengaging from the engaging recess 11 formed on the upper front side of the body 8, the front part of the armrest part 6 is in a state where the angle can be adjusted up and down around the support shaft 10, and the armrest part 6 is set to a predetermined angle, When the finger is released from the operation portion 31, the engagement portion 29 is engaged with any of the engagement recesses 11 by the elastic biasing force of the tension coil spring 32, and the set angle is maintained.
[0016]
Here, FIG. 2 is a state in which the armrest portion 6 is in a substantially horizontal state, and usually the front portion of the armrest portion 6 is in the most lowered state, and FIG. 3 is inclined by raising the front portion of the armrest portion 6. State. The angle of the armrest portion 6 may be adjusted so that the upper surface of the armrest portion 6 faces the front edge of the desk after adjusting the height of the seat portion 2 and the height of the armrest portion 6 according to the physique of the seated person. desirable. When the angle of the armrest 6 is set as described above, the mouse as one of the input means of a word processor or a personal computer is operated with the elbow placed on the upper surface of the armrest 6 and the wrist placed on the tabletop. It can be done, so that operation becomes easier. The same applies when the keyboard is operated.
[0017]
Next, 2nd Embodiment of the armrest apparatus 4 of this invention is described in more detail based on FIGS. The armrest device 4 of the present embodiment is basically the same structure as that of the first embodiment, and the same components are denoted by the same reference numerals and description thereof is omitted. Here, only the configuration different from the first embodiment will be described. The armrest device 4 of the present embodiment has a simple shape in which the side plates 21 and 21 are bent on both sides of the top plate 20 as the tilting member 9, and the rear portions of the side plates 21 and 21 are supported as described above. 10 is pivotally attached to the rear upper end of the lifting body 8 so as to be vertically rotatable, and is bent at the front portion of the side plates 21 and 21 at the intermediate portion of the rotary member 26 having a square shape when viewed from the side by the rotary shaft 28. Is rotatably supported. Further, a plurality of horizontally long engaging recesses 11 are provided on the front end of the elevating body 8 in the vertical direction and penetrated on both sides, and the rear ends of the engagement recesses 11 are communicated with the floating portions 34. doing.
[0018]
As the stopper means 12, a long ring portion 35 is formed at the tip of the free end side end of the rotating member 26, and a locking pin 29 </ b> A constituting the engaging portion 29 is provided on the ring portion 35. The locking pin 29A is inserted into the engaging recess 11 and inserted. Further, as the operating means 13, an operating portion 31 is formed that extends at a right angle to the distal end portion on the free end side of the rotating member 26, and the operating portion 31 is opened on the side surface of the armrest portion 6. It is exposed from the operation hole 30. In addition, it is preferable that a knob is appropriately provided at the tip exposed portion of the operation portion 31. Further, a tension coil spring 32 is interposed between the rotating member 26 and the front end of the side plate 21 of the tilting member 9, and the rotating member 26 is elastic in the rotational direction in which the engaging portion 29 engages with the engaging recess 11. Energized.
[0019]
In the case of the present embodiment, when the operation portion 31 exposed on the front side surface of the armrest portion 6 is lifted, the rotation member 26 rotates about the rotation shaft 28 to form the engagement portion 29. The pin 29A moves away from the engagement recess 11 while moving inside the ring portion 35 and is positioned in the floating portion 34. In this state, the front portion of the armrest portion 6 is rotated up and down around the support shaft 10. After setting the predetermined angle, if the finger is released from the operation portion 31, the engagement portion 29 is again engaged with any of the engagement recesses 11 by the elastic biasing force of the tension coil spring 32, and the set angle is maintained. It is.
[0020]
Finally, an armrest device 4 according to a third embodiment of the present invention will be described with reference to FIGS. The armrest device 4 of the present embodiment has the same basic structure as that of the first embodiment, but has a structure in which only the operating means 13 is different. The operating means 13 of this embodiment is provided with an operating portion 31 at the other end on the free end side of the rotating member 26 and the tip of the push button 36 exposed from the operating hole 30 provided in the front side surface of the armrest portion 6. The wedge-shaped inclined surface 37 formed in the above is stopped against the operation portion 31, and the operation portion 31 is lifted by pushing the push button 36, so that the rotating member 26 is rotated and the engagement portion 29 is moved from the engagement recess 11. It is intended to come off. Since other configurations are the same as those described above, the same components are denoted by the same reference numerals and description thereof is omitted.
[0021]
【The invention's effect】
The chair armrest device of the present invention constructed as described above is incorporated in the tilting member that fixes the main part of the vertical angle adjustment mechanism of the armrest portion inside the armrest portion, so that the assembly is simple and the manufacturing cost is greatly reduced. The vertical angle of the armrest can be easily adjusted.For example, when operating a word processor or computer mouse or keyboard placed on a tabletop, the height of the armrest's mouth is set to the tabletop Even when the front end of the armrest is set to approximately the same height as the front edge of the tabletop and the wrist is comfortably supported, the armrest is angled by shouldering the armrest. The optimum distance can be secured.
[Brief description of the drawings]
FIG. 1 is a side view of a chair to which an armrest device according to a first embodiment of the present invention is applied.
FIG. 2 is an enlarged longitudinal sectional view of a main part when the armrest is in a substantially horizontal state.
FIG. 3 is an enlarged vertical cross-sectional view of the main part when the armrest is in an inclined state.
FIG. 4 is an exploded perspective view of the same.
FIG. 5 is a side view of a chair to which an armrest device according to a second embodiment of the present invention is applied.
FIG. 6 is a partially enlarged longitudinal sectional view of a main part when the armrest is in a substantially horizontal state.
FIG. 7 is a partially enlarged longitudinal sectional view of a main part when the armrest is in an inclined state.
FIG. 8 is a side view of a chair to which an armrest device according to a third embodiment of the present invention is applied.
FIG. 9 is a partially enlarged cross-sectional view of the main part of the same.
FIG. 10 is a partially enlarged cross-sectional view of the main part of the same.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Leg part 2 Seat part 3 Backrest part 4 Armrest apparatus 5 Support part 6 Armrest part 7 Support arm 8 Lifting body 9 Tilt member 10 Support shaft 11 Engagement recessed part 12 Stopper means 13 Operation means 14 Upper cover member 15 Lower cover member 16 Reinforcing rib 17 Base 18 Opening 19 Reinforcing plate 20 Top plate 21 Side plate 22 Shaft hole 23 Stop plate 24 Slit hole 25 Through hole 26 Rotating member 27 Shaft cylinder 28 Rotating shaft 29 Engaging portion 30 Operating hole 31 Operating portion 32 Tension coil spring 33 Through hole 34 Free moving part 35 Ring part 36 Push button 37 Inclined surface

Claims

座部又は脚部から立ち上がった支持部に対して肘掛け部が上下角度調節可能な椅子の肘掛け装置であって、前記支持部の上端に肘掛け部内に固定した傾動部材を水平な支軸にて上下傾動可能に連結するとともに、前記支持部に上下に複数の係合凹部を形成し、該係合凹部の何れかに係合して肘掛け部を所定角度に維持するストッパー手段とその操作手段を前記傾動部材に設けてなることを特徴とする椅子の肘掛け装置。An armrest device for a chair in which an armrest portion can be adjusted in an up / down angle with respect to a support portion rising from a seat portion or a leg portion, and a tilting member fixed in the armrest portion at the upper end of the support portion is vertically moved by a horizontal support shaft. A stopper means that is connected to be tiltable, has a plurality of engaging recesses in the upper and lower portions, and engages with any of the engaging recesses to maintain the armrest at a predetermined angle, and its operating means. An armrest device for a chair, which is provided on a tilting member.

前記傾動部材の前部に水平な回動軸にて支持された回動部材の中間部を取付けるとともに、該回動部材の遊端側一端に前記係合凹部に係合する係合部を設けてストッパー手段となし、回動部材の遊端側他端に肘掛け部の前部に露出させた操作部を設けて操作手段となし、前記係合部が係合凹部に係合する回転方向に回動部材を弾性付勢してなる請求項１記載の椅子の肘掛け装置。An intermediate portion of the rotating member supported by a horizontal rotating shaft is attached to the front portion of the tilting member, and an engaging portion that engages with the engaging recess is provided at one end of the rotating end of the rotating member. The stopper means is provided, and the other end of the rotating member is provided with an operating portion exposed at the front portion of the armrest portion so that the engaging portion engages with the engaging recess. The armrest device for a chair according to claim 1, wherein the rotating member is elastically biased.

前記操作部を肘掛け部の下面又は側面に露出させてなる請求項２記載の椅子の肘掛け装置。The armrest device for a chair according to claim 2, wherein the operation portion is exposed on a lower surface or a side surface of the armrest portion.

前記傾動部材の前部に水平な回動軸にて支持された回動部材の中間部を取付けるとともに、該回動部材の遊端側一端に前記係合凹部に係合する係合部を設けてストッパー手段となし、回動部材の遊端側他端に操作部を設けるとともに、肘掛け部の前部側面に露出させた押しボタンの先端に形成した傾斜面を前記操作部に当止して操作手段となし、前記係合部が係合凹部に係合する回転方向に回動部材を弾性付勢してなる請求項１記載の椅子の肘掛け装置。An intermediate portion of the rotating member supported by a horizontal rotating shaft is attached to the front portion of the tilting member, and an engaging portion that engages with the engaging recess is provided at one end of the rotating end of the rotating member. This is a stopper means, and an operation part is provided at the other end of the free end of the rotating member, and an inclined surface formed at the tip of the push button exposed on the front side surface of the armrest part is stopped against the operation part. 2. The armrest device for a chair according to claim 1, wherein the arm member is configured as an operating means and elastically biases the rotating member in a rotation direction in which the engaging portion engages with the engaging recess.