JP2008194229A - Height adjuster of armrest in chair - Google Patents

Height adjuster of armrest in chair Download PDF

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Publication number
JP2008194229A
JP2008194229A JP2007032413A JP2007032413A JP2008194229A JP 2008194229 A JP2008194229 A JP 2008194229A JP 2007032413 A JP2007032413 A JP 2007032413A JP 2007032413 A JP2007032413 A JP 2007032413A JP 2008194229 A JP2008194229 A JP 2008194229A
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Japan
Prior art keywords
armrest
armrest support
support rod
lever
engagement
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JP2007032413A
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Japanese (ja)
Inventor
Yoichiro Oda
洋一郎 小田
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Okamura Corp
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Okamura Corp
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Priority to JP2007032413A priority Critical patent/JP2008194229A/en
Priority to CA2610533A priority patent/CA2610533C/en
Priority to US11/939,869 priority patent/US7828389B2/en
Publication of JP2008194229A publication Critical patent/JP2008194229A/en
Pending legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/03—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests
    • A47C1/0303—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests adjustable rectilinearly in vertical direction
    • A47C1/0305—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests adjustable rectilinearly in vertical direction by peg-and-notch or pawl-and-ratchet mechanism

Abstract

<P>PROBLEM TO BE SOLVED: To provide a height adjuster of an armrest in a chair for which respective members are easily and surely assembled without performing screwing work or the like and an intermediate tube is prevented from being detached after assembly. <P>SOLUTION: An intermediate tube 12 internally fitted to an armrest support tube 11 erected from the side of a seat is provided with a plurality of vertical multi-stage engagement portions 25b, and an engaging pin 24 projected from an armrest support rod 14 internally fitted to the intermediate tube 12 for supporting the armrest and moved back and forth by an operating lever 21 provided on the armrest support rod 14 is selectively engaged and disengaged to/from the engaging portions 25b. Also, by fitting and locking an elastic locking pawl 18 projected downward at the lower end of the intermediate tube 12 to an engaging hole provided on a bottom wall closing the lower end of the armrest support tube 11, the intermediate tube 12 is prevented from falling out of the armrest support tube 11. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、肘掛けの高さを簡単な操作により、段階的に調整し得るようにした椅子における肘掛けの高さ調節装置に関する。   The present invention relates to an armrest height adjusting device for a chair that can be adjusted stepwise by a simple operation.

高級仕様の事務用椅子には、座板の高さ調整機構や、背板のリクライニング機構を備えるほか、肘掛けの高さを調節可能とした肘掛装置を設けたものがある。   Some high-grade office chairs are provided with a seat plate height adjustment mechanism and a back plate reclining mechanism, as well as an armrest device that can adjust the height of the armrest.

この種の肘掛装置の従来例として、例えば下記特許文献１に記載されているようなものがある。   As a conventional example of this type of armrest device, for example, there is one described in Patent Document 1 below.

このものは、座の側方より起立する筒状の肘掛け支柱の上端より、肘当てを支持する肘当て支持杆を、上下方向に摺動可能として嵌合し、肘当て支持杆の上部に前後方向に進退自在に設けた操作ノブの押動操作により、肘当て支持杆内に中間部を支点として回動可能に設けた操作杆の上部を後方に押動し、それによって、操作杆の下部に設けた係合ピンを前方に移動し、肘掛け支柱の内面に嵌合したガイドスリーブの両側面に設けた上下方向を向くガイド孔後縁に上下多段状に設けた係止溝のいずれかに係合していた上記係合ピンを、その係合溝から離脱させ、その状態で、肘当ておよび肘当て支持杆を所望の高さに移動させた後、操作ノブから手を離すと、肘当て支持杆内に設けた付勢手段の付勢力により、上記係合ピンが後方に移動させられ、いずれかの係合溝に係合するようになっている。   In this case, an elbow rest supporting rod that supports the elbow rest is fitted from the upper end of a cylindrical armrest strut that stands up from the side of the seat so that it can slide in the vertical direction. The upper part of the operation rod that can be turned around the middle part in the elbow pad support rod is pushed backward by the pushing operation of the operation knob that can be moved forward and backward in the direction. The engagement pin provided on the guide sleeve is moved forward, and the guide sleeve is fitted on the inner surface of the armrest strut. When the engaging pin is disengaged from the engaging groove, and the elbow rest and the elbow rest supporting rod are moved to a desired height in this state, when the hand is released from the operation knob, The engagement pin is moved backward by the biasing force of the biasing means provided in the contact support rod. Is adapted to engage in any of the engagement grooves.

また、上記ガイドスリーブは、ほぼ半円弧状断面の２個の半割片を向き合わせて接合した状態で、各半割片の上端に設けた外向き鍔部が、肘掛け支柱の上端に当接するまで、肘掛け支柱内に圧嵌されている。
特開２００５−１８５６２９号公報 Further, the guide sleeve has an outward flange provided at the upper end of each half piece in contact with the upper end of the armrest strut in a state where two half pieces having a substantially semicircular arc cross section are faced to each other and joined. Until it is press-fitted in the armrest strut.
JP 2005-185629 A

しかし、特許文献１のものにおいては、２分割構造としたガイドスリーブは、両半割片を向き合わせて接合した状態で、各半割片の上端に設けた外向き鍔部が、肘掛け支柱の上端に当接するまで、肘掛け支柱内に圧嵌してあるだけであるので、肘当てを引き上げる際等に、肘掛け支柱から上方に抜け外れるおそれがある。
これを防止するため、ガイドスリーブを肘掛け支柱にねじ止めすることが考えられるが、それによると、ねじの頭部が外部に露呈し、体裁が悪くなるとともに、ねじ止め作業が煩雑になり、組付作業性が悪くなる。 However, in the one in Patent Document 1, the guide sleeve having a two-part structure is formed in such a manner that the outward flanges provided at the upper ends of the half pieces are in the state of the armrest struts in a state where both the half pieces are faced and joined. Since it is only press-fitted in the armrest strut until it comes into contact with the upper end, there is a risk that it will come off from the armrest strut when the elbow rest is pulled up.
In order to prevent this, it is conceivable to screw the guide sleeve to the armrest post, but according to this, the head of the screw is exposed to the outside, the appearance becomes worse, the screwing work becomes complicated, and the assembly is difficult. Workability becomes worse.

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、ねじ止め作業等を行うことなく、各部材を簡単かつ確実に組み付けることができ、しかも組付後に、中筒が外れることがないようにした、椅子における肘掛けの高さ調節装置を提供することを目的としている。   In the present invention, in view of the above-described problems of the prior art, each member can be easily and reliably assembled without performing a screwing operation or the like, and the middle cylinder may be detached after the assembly. An object of the present invention is to provide an armrest height adjustment device for a chair that is not provided.

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）座の側方より起立する肘掛支持筒の上端より、肘掛けを支持する肘掛支持杆を、上下方向に摺動可能として嵌合し、前記肘掛支持杆に設けた操作レバーの操作により、肘掛支持杆の側面より突出する係合ピンを前後動させて、肘掛支持筒側に上下多段状に設けた複数の係合部に選択的に係脱させるようにした椅子における肘掛けの高さ調節装置において、前記肘掛支持筒に内嵌した中筒に、前記上下多段状の複数の係合部を設け、この係合部に、前記中筒に内嵌した肘掛支持杆より突出する係合ピンが選択的に係脱しうるようにし、かつ前記中筒の下端に下向きに突設した弾性係止爪を、肘掛支持筒の下端を閉塞する底壁に設けた係合孔に嵌合係止することにより、前記中筒を肘掛支持筒より抜け止めする。 According to the present invention, the above problem is solved as follows.
(1) From the upper end of the armrest support cylinder that stands up from the side of the seat, an armrest support rod that supports the armrest is fitted so as to be slidable in the vertical direction, and by operating the operation lever provided on the armrest support rod, Adjusting the height of the armrest in a chair that moves the engagement pin protruding from the side of the armrest support rod back and forth, and selectively engages / disengages with a plurality of engagement portions provided in the upper and lower multi-stage shape on the armrest support cylinder side In the apparatus, a plurality of upper and lower multi-stage engaging portions are provided in a middle cylinder fitted into the armrest support cylinder, and an engagement pin protruding from the armrest support rod fitted into the middle cylinder is provided in the engagement part. The elastic locking claw projecting downward on the lower end of the middle cylinder is fitted and locked in the engagement hole provided in the bottom wall closing the lower end of the armrest support cylinder. Thus, the middle cylinder is prevented from coming off from the armrest support cylinder.

（２）上記(１)項において、肘掛支持筒の底壁における係合孔に、弾性係止爪の背面に当接して、弾性係止爪の係合孔から外れる方向への弾性撓曲を阻止する差し込み片を嵌合する。   (2) In the above item (1), the engagement hole in the bottom wall of the armrest support cylinder is brought into contact with the back surface of the elastic locking claw, and the elastic bending in the direction away from the engagement hole of the elastic locking claw is performed. Fit the insertion piece to be blocked.

（３）上記(２)項において、差し込み片を、肘掛支持筒の底壁の下面を覆う下部カバーの上面に突設する。   (3) In the above item (2), the insertion piece projects from the upper surface of the lower cover that covers the lower surface of the bottom wall of the armrest support cylinder.

（４）上記(１)〜(３)項のいずれかにおいて、中筒を、ほぼ半円弧状断面の２個の半割片を向き合わせて接合することにより形成するとともに、各半割片の下端両側部より垂下する弾性係止爪の側面同士を互いに突き合わせて、同一の係合孔に嵌合係止させる。   (4) In any one of the above items (1) to (3), the middle cylinder is formed by facing and joining two halves having a substantially semicircular arc cross section. The side surfaces of the elastic locking claws that hang down from both sides of the lower end are brought into contact with each other, and fitted and locked in the same engagement hole.

（５）上記(４)項において、各半割片に、上下多段状の複数の係合部をそれぞれ対向するように設け、肘掛支持杆を貫通する係合ピンの各端部が、対応する半割片の複数の係合部に選択的に係脱するようにする。   (5) In the above item (4), each half piece is provided with a plurality of upper and lower multi-stage engaging portions facing each other, and each end portion of the engaging pin that penetrates the armrest support rod corresponds to each half piece. The plurality of engaging portions of the half piece are selectively engaged / disengaged.

（６）上記(１)〜(５)項のいずれかにおいて、筒状とした肘掛支持杆の上部に、前部に肘掛支持杆より前方に突出する操作部を有する操作レバーの中間部を枢支するとともに、前記肘掛支持杆内に、中間部に前記肘掛支持杆の前後の内面に内接する膨出部を有し、かつ下端部に、左右方向を向くピン挿入孔が設けられた回動レバーを、前記膨出部を中心として回動可能として嵌合し、前記操作レバーの後端部と回動レバーの上端部とのいずれか一方に、回動レバーを肘掛支持杆の下端より上方に向けて押し入れたとき、前記いずれか他方の部分を受け入れて係合する係合凹部を設け、前記ピン挿入孔に挿入した係合ピンを、前記肘掛支持杆の側面に設けた前後方向の長孔を貫通させて、側方に突出させ、前記係合ピンの端部を、中筒に設けた上下多段状の複数の係合部に選択的に係脱しうるようにし、かつ前記回動レバーを、前記係合ピンがいずれかの係合部に係合する方向に向けて付勢する付勢手段を設ける。   (6) In any one of the above items (1) to (5), an intermediate portion of the operation lever having an operation portion protruding forward from the armrest support rod at the front portion is pivoted on the upper portion of the cylindrical armrest support rod. Rotating with support and having a bulging portion inscribed in the front and rear inner surfaces of the armrest support rod in the armrest support rod and a pin insertion hole facing in the left-right direction at the lower end portion A lever is fitted so as to be rotatable around the bulging portion, and the rotation lever is located above either the rear end portion of the operation lever or the upper end portion of the rotation lever above the lower end of the armrest support rod. An engagement recess for receiving and engaging one of the other portions when being pushed in, and an engagement pin inserted into the pin insertion hole provided in the side surface of the armrest support rod. A hole that penetrates and protrudes to the side, and the end of the engagement pin is provided on the middle cylinder Biasing that selectively engages / disengages with a plurality of lower multi-stage engaging portions and biases the rotating lever toward a direction in which the engaging pin engages any one of the engaging portions. Means are provided.

（７）上記(６)項において、操作レバーの中間部に突設した左右方向を向く軸を、肘掛支持杆の上部に設けた上方に開口する凹部に嵌合し、かつ操作レバーの中間部の上面に、肘掛支持杆の上端開口部を閉塞する閉塞部材の下面を当接させることにより、前記軸を、凹部より抜け止めする。   (7) In the above item (6), the left and right shafts protruding from the intermediate portion of the operation lever are fitted into the recesses opened upward in the upper portion of the armrest support rod, and the intermediate portion of the operation lever By making the lower surface of the closing member that closes the upper end opening of the armrest support rod abut on the upper surface of the armrest, the shaft is prevented from coming off from the recess.

（８）上記(１)〜(７)項のいずれかにおいて、付勢手段を、回動レバーの一部に連設され、かつ先端部が肘掛支持杆の内面に圧接するようにした弾性舌片とする。   (8) The elastic tongue according to any one of the above items (1) to (7), wherein the urging means is connected to a part of the rotating lever, and the tip is pressed against the inner surface of the armrest support rod. A piece.

本発明によると、次のような効果を奏することができる。
請求項１記載の発明によると、肘掛けその他を装着した肘掛支持杆を、中筒に嵌合し、かつ係合ピンを装着した状態で、それらを一体として、肘掛支持筒に上方より挿入するだけで、弾性係止爪が肘掛支持筒の底壁における係合孔に嵌合係止され、中筒が肘掛支持筒より抜け止めされるので、ねじ止め作業等を行うことなく、各部材を簡単かつ確実に組み付けることができ、しかも組付後に、中筒が肘掛支持筒より外れることがない。 According to the present invention, the following effects can be achieved.
According to the first aspect of the present invention, the armrest support rod with the armrest or the like mounted thereon is only inserted into the armrest support tube from above in the state where the armrest is fitted into the middle tube and the engagement pin is mounted. Thus, the elastic locking claw is fitted and locked in the engagement hole in the bottom wall of the armrest support cylinder, and the middle cylinder is prevented from being detached from the armrest support cylinder. And it can assemble | attach reliably and, after an assembly | attachment, a middle cylinder does not remove | deviate from an armrest support cylinder.

請求項２記載の発明によると、肘掛支持筒の底壁における係合孔に、弾性係止爪の背面に当接して、弾性係止爪の係合孔から外れる方向への弾性撓曲を阻止する差し込み片を嵌合してあるので、弾性係止爪が、係合孔から外れるのを防止することができ、ひいては、中筒が肘掛支持筒から外れるのを防止することができる。   According to the second aspect of the present invention, the engagement hole in the bottom wall of the armrest support cylinder is brought into contact with the back surface of the elastic locking claw to prevent elastic bending in the direction away from the engagement hole of the elastic locking claw. Since the insertion piece to be fitted is fitted, it is possible to prevent the elastic locking claw from coming off from the engagement hole, and thus to prevent the middle cylinder from coming off from the armrest support cylinder.

請求項３記載の発明によると、差し込み片を、肘掛支持筒の底壁の下面を覆う下部カバーの上面に突設してあるので、差し込み片を係合孔に嵌合し易くなり、また、肘掛支持筒の底壁、特に係合孔の部分が下部カバーにより覆われるので、体裁がよくなる。   According to the invention of claim 3, since the insertion piece projects from the upper surface of the lower cover that covers the lower surface of the bottom wall of the armrest support cylinder, the insertion piece can be easily fitted into the engagement hole, Since the bottom wall of the armrest support cylinder, particularly the engagement hole, is covered by the lower cover, the appearance is improved.

請求項４記載の発明によると、肘掛支持杆に係合ピンを装着した状態で、２個の半割片を、肘掛支持杆に、左右から挟むようにして、簡単に装着することができ、組み付け作業性をよくすることができるとともに、両半割片を向き合わせて接合したとき、左右に対向する弾性係止爪の側面同士が互いに接合し、この接合した２個の弾性係止爪を、肘掛支持筒の底壁に設けた係合孔に嵌合係止することにより、中筒は、両半割片が位置ずれすることなく、肘掛支持筒より抜け止めされる。また、肘掛支持筒の底壁に設ける係合孔の数を少なくすることができる。   According to the invention described in claim 4, in the state where the engagement pin is mounted on the armrest support rod, the two halves can be easily mounted so as to be sandwiched between the armrest support rod from the left and right, and the assembling work When both halves are joined facing each other, the side surfaces of the elastic locking claws facing left and right are bonded to each other. By fitting and locking in an engagement hole provided in the bottom wall of the support cylinder, the middle cylinder is prevented from coming off from the armrest support cylinder without the two halves being displaced. Further, the number of engagement holes provided in the bottom wall of the armrest support cylinder can be reduced.

請求項５記載の発明によると、係合ピンが中筒に対して両持ち支持となるため、左右のバランスがよい。また、肘掛支持杆を貫通させた係合ピンの両端部に、各半割片の係合部が嵌合するようにして、両半割片を、肘掛支持杆に、左右から挟むようにして、簡単に装着することができ、組み付け作業性をよくすることができる。   According to the invention of claim 5, since the engaging pin is supported at both ends with respect to the middle cylinder, the right and left balance is good. In addition, the engagement part of each half piece is fitted to both ends of the engagement pin that penetrates the armrest support rod, and both half pieces are sandwiched from the left and right by the armrest support rod. It is possible to improve the assembly workability.

請求項６記載の発明によると、操作レバーと回動レバーが別体であり、それぞれの回動時のモーメントを小さくすることができ、ロック解除操作時に、過度の力が操作レバーに加わったとしても、モーメントが小さいため、破損や変形のおそれを小さくすることができる。
しかも、従来一体であった操作レバーと回動レバーとを、２部材に分割したとしても、操作レバーを肘掛支持杆に枢着して、位置決めしておき、かつ回動レバーを、肘掛支持杆の下端から上方に向けて差し込むだけで、操作レバーの後端部と回動レバーの上端部とが、係合凹部を介して互いに係合し、簡単に組み立てることができる。
さらに、操作レバーの後端部と回動レバーの上端部とが、係合凹部を介して互いに係合しているので、確実に作動することができ、誤作動のおそれが少ない。 According to the sixth aspect of the present invention, it is assumed that the operation lever and the rotation lever are separate bodies, the moment at the time of each rotation can be reduced, and an excessive force is applied to the operation lever during the unlocking operation. However, since the moment is small, the risk of breakage and deformation can be reduced.
Moreover, even if the operation lever and the rotation lever, which have been conventionally integrated, are divided into two members, the operation lever is pivotally attached to the armrest support rod and positioned, and the rotation lever is connected to the armrest support rod. The rear end portion of the operating lever and the upper end portion of the rotating lever are engaged with each other via the engaging recess and can be assembled simply by inserting upward from the lower end of the lever.
Furthermore, since the rear end portion of the operation lever and the upper end portion of the rotation lever are engaged with each other via the engagement recess, the operation lever can be reliably operated and there is little risk of malfunction.

請求項７記載の発明によると、操作レバーと一体とした軸を、肘掛支持杆の上端より凹部に落とし込み、その後、肘掛支持杆の上端開口部を、閉塞部材をもって閉塞するだけで、操作レバーを、肘掛支持杆に簡単に枢着することができ、しかも、操作レバーが、肘掛支持杆から脱落するのを確実に防止することができる。   According to the seventh aspect of the present invention, the shaft integrated with the operation lever is dropped into the recess from the upper end of the armrest support rod, and then the upper end opening of the armrest support rod is closed with the closing member. It can be easily pivotally attached to the armrest support rod, and the operation lever can be reliably prevented from falling off the armrest support rod.

請求項８記載の発明によると、付勢手段を、回動レバーと一体に、簡単に形成できるため、安価に製造することができるとともに、組み立て作業も簡単となる。   According to the eighth aspect of the present invention, the urging means can be easily formed integrally with the turning lever, so that it can be manufactured at low cost and the assembling work is also simplified.

以下、本発明の実施形態を、図面に基づいて説明する。
図１は、本発明の肘掛けの高さ調節装置の第１の実施形態を備える椅子の斜視図、図２は、同じく側面図である。
この椅子は、先端部にキャスタ１が設けられた放射状の５本の脚杆２の中心部に支持された脚柱３と、この脚柱３の上端に設けられた支基４と、この支基４の上方に、支持リンク５を介して支持された座６と、支基４に左右方向を向く軸７をもって枢着され、後傾可能とした背凭れ８と、座６の両側方(片方のみとすることもある)より起立する肘掛装置９とを備えている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of a chair provided with a first embodiment of an armrest height adjusting device of the present invention, and FIG. 2 is a side view of the same.
The chair includes a pillar 3 supported at the center of five radial rods 2 each having a caster 1 at the tip, a support base 4 provided at the upper end of the pillar 3, and the support. A seat 6 supported above the base 4 via a support link 5, a backrest 8 that is pivotally attached to the support base 4 with a shaft 7 facing in the left-right direction, and can be tilted backward, and both sides of the seat 6 ( And an armrest device 9 that stands up from the other.

図３〜図８は、肘掛装置９の詳細を示す。
肘掛装置９は、下端部内面に設けたブラケット１０を、座６の側部下面に固着することにより、座６の側方より若干前傾姿勢で起立するようにした肘掛支持筒１１と、この肘掛支持筒１１内面に内接するように嵌合された中筒１２と、肘掛け１３を支持するとともに、中筒１２内に上下方向に摺動可能として嵌合された筒状の肘掛支持杆１４と、肘掛支持筒１１に対する肘掛支持杆１４の高さを調節する高さ調節装置１５とを備えている。 3 to 8 show details of the armrest device 9.
The armrest device 9 includes an armrest support cylinder 11 that is configured to stand in a slightly forward tilted posture from the side of the seat 6 by fixing a bracket 10 provided on the inner surface of the lower end portion to the lower surface of the side portion of the seat 6, A middle cylinder 12 fitted so as to be inscribed in the inner surface of the armrest support cylinder 11; a cylindrical armrest support rod 14 which supports the armrest 13 and is fitted in the middle cylinder 12 so as to be slidable in the vertical direction; And a height adjusting device 15 for adjusting the height of the armrest support rod 14 with respect to the armrest support tube 11.

肘掛支持筒１１と中筒１２と肘掛支持杆１４とは、前後方向を向く長軸を、左右方向を向く短軸よりわずかに長くした楕円形断面の筒状としてあるが、断面円弧状その他の形状としてもよい。   The armrest support cylinder 11, the middle cylinder 12, and the armrest support rod 14 have a cylindrical shape with an elliptical cross section in which the long axis facing the front-rear direction is slightly longer than the short axis facing the left-right direction. It is good also as a shape.

中筒１２は、左右に２分割した２個の半割片１２Ａ、１２Ｂを向き合わせて接合することにより形成されている。両半割片１２Ａ、１２Ｂの対向面の４隅部には、正規の位置関係したとき、互いに嵌合するようにした位置決め用の凹部１６と凸部１７とが設けられている。   The middle cylinder 12 is formed by facing and joining two halved pieces 12A and 12B divided into left and right parts. At the four corners of the opposing surfaces of both halved pieces 12A and 12B, positioning concave portions 16 and convex portions 17 are provided so as to be fitted to each other when they are in a proper positional relationship.

両半割片１２Ａ、１２Ｂの対向部の下端前後部には、下端部に前後外向きの爪１８ａを有する弾性係止爪１８が垂下するように設けられており、両半割片１２Ａ、１２Ｂを向き合わせて接合したとき、左右に対向する弾性係止爪１８、１８の側面同士が互いに接合し、この接合した２個の弾性係止爪１８、１８を、肘掛支持筒１１の下端を閉塞する底壁１１ａに設けた係合孔１９(図７および図８参照)に嵌合係止することにより、中筒１２は、両半割片１２Ａ、１２Ｂが位置ずれすることなく、肘掛支持筒１１より抜け止めされている。   An elastic locking claw 18 having a front-rear outward claw 18a at the lower end portion is provided at the lower end front and rear portions of the opposed portions of the half halves 12A, 12B. When the two sides of the elastic locking claws 18, 18 facing each other are bonded to each other, the two elastic locking claws 18, 18 that are joined to each other are closed on the lower end of the armrest support cylinder 11. By engaging and locking in an engagement hole 19 (see FIGS. 7 and 8) provided in the bottom wall 11a, the middle cylinder 12 can be supported by the armrest support cylinder without positional displacement of the half halves 12A and 12B. 11 is prevented from coming off.

高さ調節装置１５は、肘掛支持杆１４の上部前面に設けられた切欠き２０を通って前下方に突出する操作部２１ａを有するとともに、後端部に、下向きＵ字状の係合凹部２１ｂを有し、かつ中間部が左右方向を向く軸２１ｃをもって、肘掛支持杆１４の上部に枢着された操作レバー２１と、側面形が上下方向に長いほぼ菱形をなし、中間部を中心に回動可能として、肘掛支持杆１４内に嵌合され、上端部に、操作レバー２１の係合凹部２１ｂに受け入れられて係合する、左右方向を向く軸部２２ａが設けられ、かつ下端部に、肘掛支持杆１４のやや下部の両側壁に設けられた前後方向を向く長孔２３を通って、肘掛支持杆１４を左右方向に貫通する係合ピン２４の中間部が貫通する左右方向を向くピン挿入孔２２ｂが設けられた回動レバー２２と、中筒１２の各半割片１２Ａ、１２Ｂにそれぞれ設けられ、かつ肘掛支持杆１４の両側方に突出する係合ピン２４の各端部が嵌合するようにした係合孔２５とを備えている。   The height adjusting device 15 has an operation portion 21a that projects forward and downward through a notch 20 provided on the upper front surface of the armrest support rod 14, and a downward U-shaped engagement recess 21b at the rear end portion. And an operation lever 21 pivotally attached to the upper portion of the armrest support rod 14 with a shaft 21c whose middle portion faces in the left-right direction, and a substantially rhombus whose side shape is long in the vertical direction. A shaft portion 22a facing in the left-right direction, which is fitted in the armrest support rod 14 and is received in and engaged with the engagement recess 21b of the operation lever 21, is provided at the upper end portion. A pin that faces in the left-right direction through an intermediate portion of an engagement pin 24 that penetrates the armrest support rod 14 in the left-right direction through a long hole 23 facing in the front-rear direction provided on both side walls slightly below the armrest support rod 14 Rotating lever 2 provided with an insertion hole 22b And an engagement hole 25 provided in each of the half pieces 12A and 12B of the middle cylinder 12 and adapted to fit each end portion of an engagement pin 24 protruding to both sides of the armrest support rod 14. I have.

操作レバー２１は、その中間部両側面に突設した軸２１ｃを、肘掛支持杆１４の上端の開口縁に設けた上方に開口する左右１対の凹部２６に上方より嵌合し、かつ操作レバー２１の中間部の上面に、肘掛支持杆１４の上端開口部を閉塞する閉塞部材２７の下面を当接させることにより、軸２１ｃを、凹部２６より抜け止めして、肘掛支持杆１４の上部に簡単に装着しうるようにしてある。   The operating lever 21 is fitted with a pair of left and right concave portions 26 provided on the opening edge of the upper end of the armrest support rod 14 from above, with shafts 21c projecting on both side surfaces of the intermediate portion from above. 21 is brought into contact with the lower surface of the closing member 27 that closes the upper end opening of the armrest support rod 14, so that the shaft 21 c is prevented from coming off from the recess 26, and is placed on the upper portion of the armrest support rod 14. It can be easily installed.

回動レバー２２の上下方向の中間部には、肘掛支持杆１４の前後の内面に内接するとともに、菱形の前後の頂部に相当する部分において、曲率中心が同一の円弧状をなして前後に突出する膨出部２２ｃが設けられ、回動レバー２２は、特別に枢軸を設けることなく、この膨出部２２ｃの曲率中心を中心として、肘掛支持杆１４内において回動しうるようになっている。   In the middle of the pivot lever 22 in the vertical direction, it is inscribed in the front and rear inner surfaces of the armrest support rod 14 and protrudes forward and backward in the portion corresponding to the top of the rhombus in the same arc shape. The bulging portion 22c is provided, and the turning lever 22 can be turned in the armrest support rod 14 around the center of curvature of the bulging portion 22c without any special pivot. .

各半割片１２Ａ、１２Ｂに設けられた係合孔２５は、中筒１２の軸線方向を向く長孔状の連絡孔２５ａと、その前縁に、前方を向く凹溝状をなして上下多段状に設けられた複数の係合部２５ｂとからなり、肘掛支持杆１４より両側方に突出する係合ピン２４の各端部が、前記連絡孔２５ａに嵌合しているときは、係合ピン２４およびは肘掛支持杆１４は、中筒１２および肘掛支持筒１１に対して、上下方向に自由に移動することができ、係合ピン２４が、いずれかの係合部２５ｂに係合しているときは、係合ピン２４および肘掛支持杆１４の上下方向の移動は阻止されるようになっている。   Engagement holes 25 provided in each of the half pieces 12A and 12B have a long hole-shaped connecting hole 25a facing the axial direction of the middle cylinder 12, and a forward groove on the front edge thereof. When the end portions of the engagement pin 24 which are formed in a plurality of shapes and protrude from the armrest support rod 14 on both sides are fitted in the communication holes 25a, the engagement holes 25a are engaged. The pin 24 and the armrest support rod 14 can freely move in the vertical direction with respect to the middle cylinder 12 and the armrest support cylinder 11, and the engagement pin 24 engages with any of the engagement portions 25b. In this case, the vertical movement of the engagement pin 24 and the armrest support rod 14 is prevented.

回動レバー２２の下端部には、後上方を向く弾性舌片２８が一体的に形成されており、この弾性舌片２８の先端部が、肘掛支持杆１４の後部内面に圧接することにより、回動レバー２２は、図８に実線で示すように、係合ピン２４が係合孔２５におけるいずれかの係合部２５ｂに係合する係止位置に向けて常時付勢されている。
すなわち、この弾性舌片２８は、回動レバー２２を、係合ピン２４がいずれかの係合部２５ｂに係合する方向に向けて付勢する付勢手段をなしている。 An elastic tongue piece 28 is formed integrally with the lower end portion of the rotating lever 22 so as to face the rear upper side, and the distal end portion of the elastic tongue piece 28 comes into pressure contact with the inner surface of the rear portion of the armrest support rod 14. As shown by a solid line in FIG. 8, the rotation lever 22 is always urged toward a locking position where the engagement pin 24 engages with any engagement portion 25 b in the engagement hole 25.
That is, the elastic tongue piece 28 constitutes an urging means for urging the rotation lever 22 in a direction in which the engagement pin 24 engages with any one of the engagement portions 25b.

したがって、図８に実線で示すように、常時は、この付勢手段の作用により、係合ピン２４はいずれかの係合部２５ｂに係合し、肘掛け１３は、その係合部２５ｂに対応する高さに保持され、操作レバー２１は、その操作部２１ａが切欠き２０より前下方に突出する非操作位置に位置している。   Therefore, as indicated by the solid line in FIG. 8, the engagement pin 24 is normally engaged with one of the engagement portions 25b by the action of the biasing means, and the armrest 13 corresponds to the engagement portion 25b. The operation lever 21 is positioned at a non-operation position where the operation portion 21a protrudes forward and downward from the notch 20.

この状態から、肘掛け１３の高さを変更したい場合は、まず、操作レバー２１の操作部２１ａを、この弾性舌片２８の付勢力に抗して、非操作位置から、図８に想像線で示すように、上方の操作位置に向かって上向きに回動させる。
すると、操作レバー２１の後部の係合凹部２１ｂが、前方に回動し、それに伴って、係合凹部２１ｂと上端の軸部２２ａが係合している回動レバー２２は、図８に想像線で示すように、反時計回りに回動させられ、係合ピン２４は、係合孔２５の係合部２５ｂから離脱して、連絡孔２５ａ内に嵌合する係止解除位置へ移動させられる。 When it is desired to change the height of the armrest 13 from this state, first, the operating portion 21a of the operating lever 21 is resisted against the urging force of the elastic tongue piece 28 from the non-operating position by an imaginary line in FIG. As shown, it is turned upward toward the upper operating position.
Then, the engaging recess 21b at the rear portion of the operation lever 21 rotates forward, and accordingly, the rotating lever 22 in which the engaging recess 21b and the shaft portion 22a at the upper end are engaged is imagined in FIG. As indicated by the line, the pin is rotated counterclockwise, and the engagement pin 24 is disengaged from the engagement portion 25b of the engagement hole 25 and moved to a lock release position that fits in the communication hole 25a. It is done.

ついで、操作レバー２１の操作部２１ａを操作位置に保持したままの状態で、肘掛け１３および肘掛支持杆１４を、所望の高さまで上昇または下降させる。
このとき、係合ピン２４は、連絡孔２５ａ内に位置しているので、その連絡孔２５ａ内を自由に上下動することができる。 Next, the armrest 13 and the armrest support rod 14 are raised or lowered to a desired height while the operation portion 21a of the operation lever 21 is held at the operation position.
At this time, since the engagement pin 24 is located in the communication hole 25a, the engagement pin 24 can freely move up and down in the communication hole 25a.

所望の高さに到達した後、操作レバー２１の操作部２１ａから手を離すか、または操作力を緩めると、弾性舌片２８の付勢力により、回動レバー２２は、元の係止位置に向かって付勢させられ、係合ピン２４は、そのときの最も近い係合部２５ｂに係合させられる。なお、係合ピン２４が、いずれかの係合部２５ｂに適正に係合しないときは、肘掛け１３を若干上下いずれかに移動させればよい。   After reaching the desired height, when the hand is released from the operating portion 21a of the operating lever 21 or the operating force is loosened, the rotating lever 22 is returned to the original locking position by the biasing force of the elastic tongue piece 28. The engagement pin 24 is engaged with the closest engagement portion 25b at that time. In addition, what is necessary is just to move the armrest 13 to the some up and down direction, when the engaging pin 24 does not engage one of the engaging parts 25b appropriately.

係合ピン２４がいずれかの係合部２５ｂに適正に係合し、回動レバー２２が係止位置に復帰させられると、それに伴って、操作レバー２１も非操作位置に復帰させられる。   When the engaging pin 24 is properly engaged with one of the engaging portions 25b and the rotating lever 22 is returned to the locking position, the operating lever 21 is also returned to the non-operating position.

また、この肘掛装置９の組立てに際しては、肘掛支持杆１４に操作レバー２１を装着した後、操作レバー２１を位置決めしておき、かつ回動レバー２２を、肘掛支持杆１４の下端から上方に向けて差し込むだけで、操作レバー２１の後端部と回動レバー２２の上端部とが、係合凹部２１ｂを介して互いに係合するとともに、肘掛支持杆１４の長孔２３と回動レバー２２のピン挿入孔２２ｂとを整合させた状態で、簡単に組み立てることができる。このとき、操作レバー２１は、重心が軸２１ｃより操作部２１ａ寄りに位置するように、操作部２１ａを重く形成しておくことにより、自重で非操作位置に位置決めされ、また、回動レバー２２は、弾性舌片２８を、肘掛支持杆１４の後部内面に圧接させることにより、係止位置に位置決めされるので、操作レバー２１および回動レバー２２のための特別な位置決め手段を設ける必要はない。   Further, when assembling the armrest device 9, the operation lever 21 is mounted on the armrest support rod 14, the operation lever 21 is positioned, and the rotation lever 22 is directed upward from the lower end of the armrest support rod 14. The rear end portion of the operation lever 21 and the upper end portion of the rotation lever 22 are engaged with each other via the engagement recess 21b, and the elongated hole 23 of the armrest support rod 14 and the rotation lever 22 are It can be easily assembled with the pin insertion hole 22b aligned. At this time, the operation lever 21 is positioned at the non-operation position by its own weight by forming the operation portion 21a so that the center of gravity is located closer to the operation portion 21a than the shaft 21c. Since the elastic tongue piece 28 is positioned at the locking position by pressing the elastic tongue piece 28 against the inner surface of the rear portion of the armrest support rod 14, it is not necessary to provide special positioning means for the operation lever 21 and the rotation lever 22. .

この状態で、互いに整合した肘掛支持杆１４の長孔２３と回動レバー２２のピン挿入孔２２ｂとに、係合ピン２４を貫通させた後、その左右両側方より、両半割片１２Ａ、１２Ｂを、互いに向き合わせて、かつ係合ピン２４の両端が予め定めた係合部２５ｂに係合するようにして、肘掛支持杆１４を挟んで接合させ、それらを一体として、肘掛支持筒１１内に上方より挿入し、互いに接合された左右に対応する弾性係止爪１８、１８を、肘掛支持筒１１の底壁１１ａにおける係合孔１９に嵌合係止させることにより、ねじ等を全く使用することなく、肘掛支持筒１１、中筒１２、肘掛支持杆１４、操作レバー２１、回動レバー２２等を、簡単かつ確実に組み立てることができる。   In this state, after the engaging pin 24 is passed through the elongated hole 23 of the armrest support rod 14 and the pin insertion hole 22b of the rotating lever 22 that are aligned with each other, both the half pieces 12A, 12B are faced to each other and both ends of the engagement pin 24 are engaged with a predetermined engagement portion 25b so as to be joined with the armrest support rod 14 interposed therebetween, and these are joined together to form an armrest support cylinder 11. By inserting the elastic locking claws 18 and 18 corresponding to the left and right jointed with each other into the engagement hole 19 in the bottom wall 11a of the armrest support cylinder 11, the screw or the like is completely removed. Without use, the armrest support cylinder 11, the middle cylinder 12, the armrest support rod 14, the operation lever 21, the rotation lever 22 and the like can be easily and reliably assembled.

肘掛け１３は、本発明には直接関係しないので、その詳細な説明は省略するが、この例では、図３に示すように、肘掛基板２９と、チルト部材３０と、固定円板３１と、芯材３２と、クッション材３３と、肘掛パッド３４とを、順次積み重ねて、合体させることにより、左右方向に旋回可能で、しかも、左右方向に平行移動もできるような構成としてある。   Since the armrest 13 is not directly related to the present invention, a detailed description thereof will be omitted, but in this example, as shown in FIG. 3, the armrest substrate 29, the tilt member 30, the fixed disk 31, the core The material 32, the cushion material 33, and the armrest pad 34 are sequentially stacked and united so that the material 32, the cushion material 33, and the armrest pad 34 can be turned in the left-right direction and can be translated in the left-right direction.

図９〜図１２は、本発明の第２の実施形態を示す。なお、第１の実施形態におけるのと同一または類似の部材には、同一の符号をもって図示するに止め、それらについての詳細な説明は省略する。
この実施形態においては、肘掛支持筒１１の底壁１１ａにおける前後の係合孔１９に、弾性係止爪１８の背面に当接して、弾性係止爪１８の係合孔１９から外れる方向への弾性撓曲を阻止する差し込み片３５を嵌合してあるので、弾性係止爪１８が、係合孔１９から外れるのを防止することができ、ひいては、中筒１２が肘掛支持筒１１から外れるのを防止できるようにしてある。 9 to 12 show a second embodiment of the present invention. Note that the same or similar members as those in the first embodiment are indicated by the same reference numerals, and detailed description thereof is omitted.
In this embodiment, the front and rear engagement holes 19 in the bottom wall 11a of the armrest support cylinder 11 are brought into contact with the back surface of the elastic locking claws 18 so as to be detached from the engagement holes 19 of the elastic locking claws 18. Since the insertion piece 35 for preventing the elastic bending is fitted, the elastic locking claw 18 can be prevented from being detached from the engagement hole 19, and the middle cylinder 12 is detached from the armrest support cylinder 11. It can be prevented.

また、前後の差し込み片３５を、肘掛支持筒１１の底壁１１ａの下面を覆う下部カバー３６の上面に突設してあるので、差し込み片３５を係合孔１９に嵌合し易くなり、また、肘掛支持筒１１の底壁１１ａ、特に係合孔１９の部分が下部カバー３６により覆われるので、体裁がよくなる。   Further, since the front and rear insertion pieces 35 project from the upper surface of the lower cover 36 that covers the lower surface of the bottom wall 11a of the armrest support cylinder 11, the insertion pieces 35 can be easily fitted into the engagement holes 19, and Since the bottom wall 11a of the armrest support cylinder 11, particularly the engagement hole 19, is covered with the lower cover 36, the appearance is improved.

さらに、この例では、肘掛支持筒１１の底壁１１ａの中央に、円形孔３７を設け、中筒１２における左右の半割片１２Ａ、１２Ｂの下端部に、この円形孔３７の左右の縁に弾性係合するようにした１対の平面視円弧状の弾性係合爪３８、３８を設け、さらに、下部カバー３６の上面中央に、円形孔３７に弾性係合した左右の弾性係合爪３８、３８間に下方より嵌合することにより、両弾性係合爪３８、３８のないほうへの弾性撓曲を阻止する差し込み片３９と、円形孔３７の前後の縁に弾性係合する弾性係合片４０、４０を設けてある。
このような構成を付加することにより、中筒１２が肘掛支持筒１１から外れるのを、より強力に防止することができる。 Further, in this example, a circular hole 37 is provided in the center of the bottom wall 11 a of the armrest support cylinder 11, and at the lower ends of the left and right half pieces 12 </ b> A and 12 </ b> B in the middle cylinder 12, on the left and right edges of the circular hole 37. A pair of elastic engagement claws 38, 38 having a circular arc shape in plan view are provided to be elastically engaged, and the left and right elastic engagement claws 38 elastically engaged with the circular hole 37 are provided at the center of the upper surface of the lower cover 36. , 38 from below, an insertion piece 39 that prevents elastic bending to the side without both elastic engagement claws 38, 38, and an elastic engagement that elastically engages the front and rear edges of the circular hole 37. Joint pieces 40, 40 are provided.
By adding such a configuration, it is possible to more strongly prevent the middle cylinder 12 from being detached from the armrest support cylinder 11.

なお、第１の実施形態においては、操作レバー２１の後端部に、下向きＵ字状の係合凹部２１ｂを設け、これに、回動レバー２２の軸部２２ａが受け入れられて係合するようにしてあるが、操作レバー２１の後端部に、左右方向を向く軸部を設け、回動レバー２２の上端部に、回動レバー２２を肘掛支持杆１４の下端より上方に向けて押し入れたとき、上記軸部を受け入れて係合するようにした上向きＵ字状の係合凹部を設けてもよい。   In the first embodiment, a downward U-shaped engagement recess 21b is provided at the rear end portion of the operation lever 21, and the shaft portion 22a of the rotation lever 22 is received and engaged therewith. However, a shaft portion facing in the left-right direction is provided at the rear end portion of the operation lever 21, and the rotation lever 22 is pushed upward from the lower end of the armrest support rod 14 into the upper end portion of the rotation lever 22. In some cases, an upward U-shaped engagement recess adapted to receive and engage the shaft portion may be provided.

本発明の肘掛装置の第１の実施形態を備える椅子の斜視図である。It is a perspective view of a chair provided with a 1st embodiment of an armrest device of the present invention. 同じく、側面図である。Similarly, it is a side view. 肘掛装置の分解斜視図である。It is a disassembled perspective view of an armrest apparatus. 肘掛装置における高さ調節装置の部分の拡大分解斜視図である。It is an expansion disassembled perspective view of the part of the height adjustment apparatus in an armrest apparatus. 図４図示の状態から、一部の部材を組み付けた状態を示す分解斜視図である。It is a disassembled perspective view which shows the state which attached some members from the state of FIG. 4 illustration. 同じく、組立完成状態を示す斜視図である。Similarly, it is a perspective view which shows an assembly completion state. 完成した肘掛装置を斜め下方より見た斜視図である。It is the perspective view which looked at the completed armrest apparatus from diagonally downward. 同じく、縦断側面図である。Similarly, it is a vertical side view. 本発明の肘掛装置の第２の実施形態の下部の縦断側面図である。It is a vertical side view of the lower part of 2nd Embodiment of the armrest apparatus of this invention. 同じく、下部の縦断正面図である。組立完成状態を示す斜視図である。Similarly, it is a lower longitudinal front view. It is a perspective view which shows an assembly completion state. 同じく、下方より見た分解斜視図である。Similarly, it is the exploded perspective view seen from the lower part. 下部カバーを斜め上方より見た斜視図である。It is the perspective view which looked at the lower cover from diagonally upward.

符号の説明Explanation of symbols

１ キャスタ
２ 脚杆
３ 脚柱
４ 支基
５ 支持リンク
６ 座
７ 軸
８ 背凭れ
９ 肘掛装置
１０ ブラケット
１１ 肘掛支持筒
１１ａ底壁
１２ 中筒
１２Ａ、１２Ｂ 半割片
１３ 肘掛け
１４ 肘掛支持杆
１５ 高さ調節装置
１６ 凹部
１７ 凸部
１８ 弾性係止爪
１８ａ爪
１９ 係合孔
２０ 切欠き
２１ 操作レバー
２１ａ操作部
２１ｂ係合凹部
２１ｃ軸
２２ 回動レバー
２２ａ軸部
２２ｂピン挿入孔
２２ｃ膨出部
２３ 長孔
２４ 係合ピン
２５ 係合孔
２５ａ連絡孔
２５ｂ係合部
２６ 凹部
２７ 閉塞部材
２８ 弾性舌片(付勢手段)
２９ 肘掛基板
３０ チルト部材
３１ 固定円板
３２ 芯材
３３ クッション材
３４ 肘掛パッド
３５ 差し込み片
３６ 下部カバー
３７ 円形孔
３８ 弾性係合爪
３９ 差し込み片
４０ 弾性係合片 DESCRIPTION OF SYMBOLS 1 Caster 2 Leg rod 3 Leg column 4 Support base 5 Support link 6 Seat 7 Axis 8 Backrest 9 Armrest device 10 Bracket 11 Armrest support cylinder 11a Bottom wall 12 Middle cylinder 12A, 12B Half piece 13 Armrest 14 Armrest support collar 15 Height Adjusting device 16 Concave part 17 Convex part 18 Elastic locking claw 18a Claw 19 Engagement hole 20 Notch 21 Operation lever 21a Operation part 21b Engagement concave part 21c Shaft 22 Rotating lever 22a Shaft part 22b Pin insertion hole 22c Swelling part 23 Long hole 24 Engagement pin 25 Engagement hole 25a Communication hole 25b Engagement part 26 Recessed part 27 Closure member 28 Elastic tongue piece (biasing means)
29 Armrest substrate 30 Tilt member 31 Fixed disk 32 Core material 33 Cushion material 34 Armrest pad 35 Insertion piece 36 Lower cover 37 Circular hole 38 Elastic engagement claw 39 Insertion piece 40 Elastic engagement piece

Claims (8)

座の側方より起立する肘掛支持筒の上端より、肘掛けを支持する肘掛支持杆を、上下方向に摺動可能として嵌合し、前記肘掛支持杆に設けた操作レバーの操作により、肘掛支持杆の側面より突出する係合ピンを前後動させて、肘掛支持筒側に上下多段状に設けた複数の係合部に選択的に係脱させるようにした椅子における肘掛けの高さ調節装置において、
前記肘掛支持筒に内嵌した中筒に、前記上下多段状の複数の係合部を設け、この係合部に、前記中筒に内嵌した肘掛支持杆より突出する係合ピンが選択的に係脱しうるようにし、かつ前記中筒の下端に下向きに突設した弾性係止爪を、肘掛支持筒の下端を閉塞する底壁に設けた係合孔に嵌合係止することにより、前記中筒を肘掛支持筒より抜け止めしたことを特徴とする椅子における肘掛けの高さ調節装置。 From the upper end of the armrest support cylinder that stands up from the side of the seat, an armrest support rod that supports the armrest is fitted so as to be slidable in the vertical direction, and the armrest support rod is operated by operating the operation lever provided on the armrest support rod. In the armrest height adjusting device in the chair, the engaging pin protruding from the side surface of the chair is moved back and forth, and selectively engaged with and disengaged from the plurality of engaging portions provided in the upper and lower multistage shape on the armrest support cylinder side.
A plurality of the upper and lower multi-stage engaging portions are provided in the middle cylinder fitted in the armrest support cylinder, and an engagement pin protruding from the armrest support rod fitted in the middle cylinder is selectively provided in the engagement section. By engaging and locking an elastic locking claw projecting downward at the lower end of the middle cylinder into an engagement hole provided in a bottom wall closing the lower end of the armrest support cylinder, A height adjusting device for an armrest in a chair, wherein the middle cylinder is prevented from being detached from an armrest support cylinder. 肘掛支持筒の底壁における係合孔に、弾性係止爪の背面に当接して、弾性係止爪の係合孔から外れる方向への弾性撓曲を阻止する差し込み片を嵌合した請求項１記載の椅子における肘掛けの高さ調節装置。   The engagement hole in the bottom wall of the armrest support cylinder is fitted with an insertion piece that abuts the back surface of the elastic locking claw and prevents elastic bending in a direction away from the engagement hole of the elastic locking claw. The armrest height adjustment apparatus in the chair of 1. 差し込み片を、肘掛支持筒の底壁の下面を覆う下部カバーの上面に突設した請求項２記載の椅子における肘掛けの高さ調節装置。   The height adjusting device for an armrest in a chair according to claim 2, wherein the insertion piece projects from the upper surface of the lower cover that covers the lower surface of the bottom wall of the armrest support cylinder. 中筒を、ほぼ半円弧状断面の２個の半割片を向き合わせて接合することにより形成するとともに、各半割片の下端両側部より垂下する弾性係止爪の側面同士を互いに突き合わせて、同一の係合孔に嵌合係止させた請求項１〜３のいずれかに記載の椅子における肘掛けの高さ調節装置。   The middle cylinder is formed by facing and joining two halves with a substantially semicircular arc cross section, and the side surfaces of the elastic locking claws that hang down from both sides of the lower end of each halve are abutted against each other. The height adjusting device of the armrest in the chair according to any one of claims 1 to 3, which is fitted and locked in the same engagement hole. 各半割片に、上下多段状の複数の係合部をそれぞれ対向するように設け、肘掛支持杆を貫通する係合ピンの各端部が、対応する半割片の複数の係合部に選択的に係脱するようにした請求項４記載の椅子における肘掛けの高さ調節装置。   Each half piece is provided with a plurality of upper and lower multi-stage engaging portions so as to face each other, and each end of the engaging pin that penetrates the armrest support rod is connected to the corresponding plurality of engaging portions of the half piece. 5. The armrest height adjusting device for a chair according to claim 4, wherein the height adjusting device is selectively engaged and disengaged. 筒状とした肘掛支持杆の上部に、前部に肘掛支持杆より前方に突出する操作部を有する操作レバーの中間部を枢支するとともに、前記肘掛支持杆内に、中間部に前記肘掛支持杆の前後の内面に内接する膨出部を有し、かつ下端部に、左右方向を向くピン挿入孔が設けられた回動レバーを、前記膨出部を中心として回動可能として嵌合し、前記操作レバーの後端部と回動レバーの上端部とのいずれか一方に、回動レバーを肘掛支持杆の下端より上方に向けて押し入れたとき、前記いずれか他方の部分を受け入れて係合する係合凹部を設け、前記ピン挿入孔に挿入した係合ピンを、前記肘掛支持杆の側面に設けた前後方向の長孔を貫通させて、側方に突出させ、前記係合ピンの端部を、中筒に設けた上下多段状の複数の係合部に選択的に係脱しうるようにし、かつ前記回動レバーを、前記係合ピンがいずれかの係合部に係合する方向に向けて付勢する付勢手段を設けた、請求項１〜５のいずれかに記載の椅子における肘掛けの高さ調節装置。   An intermediate part of an operation lever having an operation part protruding forward from the armrest support bar at the front part is pivotally supported on the upper part of the cylindrical armrest support bar, and the armrest support is supported in the middle part in the armrest support bar. A swivel lever that has a bulging portion that is inscribed in the front and rear inner surfaces of the rod and that has a pin insertion hole that faces in the left-right direction at the lower end is fitted so as to be rotatable about the bulging portion. When the turning lever is pushed into one of the rear end portion of the operating lever and the upper end portion of the turning lever upward from the lower end of the armrest support rod, the other portion is received and engaged. An engaging recess is provided, and the engaging pin inserted into the pin insertion hole is protruded laterally through a long hole in the front-rear direction provided in the side surface of the armrest support rod. Selectively engage and disengage the end with a plurality of upper and lower multi-stage engaging parts provided on the middle cylinder The urging means which urges | biases the said rotation lever toward the direction which the said engaging pin engages in any one engaging part was provided. A device for adjusting the height of an armrest in a chair. 操作レバーの中間部に突設した左右方向を向く軸を、肘掛支持杆の上部に設けた上方に開口する凹部に嵌合し、かつ操作レバーの中間部の上面に、肘掛支持杆の上端開口部を閉塞する閉塞部材の下面を当接させることにより、前記軸を、凹部より抜け止めした請求項６記載の椅子における肘掛けの高さ調節装置。   The left and right shafts projecting from the middle part of the control lever are fitted into the recesses that open upward in the upper part of the armrest support bar, and the upper end opening of the armrest support bar is located on the upper surface of the middle part of the control lever. The armrest height adjustment device for a chair according to claim 6, wherein the shaft is prevented from coming off from the concave portion by contacting a lower surface of a closing member that closes the portion. 付勢手段を、回動レバーの一部に連設され、かつ先端部が肘掛支持杆の内面に圧接するようにした弾性舌片とした請求項１〜７のいずれかに記載の椅子における肘掛けの高さ調節装置。   The armrest in the chair according to any one of claims 1 to 7, wherein the urging means is an elastic tongue piece that is provided continuously with a part of the rotating lever and has a tip portion pressed against the inner surface of the armrest support rod. Height adjustment device.
JP2007032413A 2007-02-09 2007-02-13 Height adjuster of armrest in chair Pending JP2008194229A (en)

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JP2007032413A JP2008194229A (en) 2007-02-13 2007-02-13 Height adjuster of armrest in chair
CA2610533A CA2610533C (en) 2007-02-09 2007-11-14 Armrest device in a chair
US11/939,869 US7828389B2 (en) 2007-02-09 2007-11-14 Armrest device in a chair

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JP2011005153A (en) * 2009-06-29 2011-01-13 Itoki Corp Armrest device
KR101008888B1 (en) 2008-12-09 2011-01-17 듀오백코리아 주식회사 Armrest height controlling apparatus
KR200465275Y1 (en) 2012-08-22 2013-02-08 주식회사 리바트 Lifting armrest
JP2014166597A (en) * 2014-06-20 2014-09-11 Itoki Corp Armrest device
KR101547275B1 (en) 2014-05-02 2015-08-26 주식회사 다원체어스 Armrest for Chair
JP2020069337A (en) * 2018-11-02 2020-05-07 株式会社オカムラ Backrest and chair
KR102356354B1 (en) * 2021-07-28 2022-02-08 주식회사 다원체어스 Armrest for chair

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JP2004113501A (en) * 2002-09-26 2004-04-15 Okamura Corp Armrest device for seat
JP2005185619A (en) * 2003-12-26 2005-07-14 Okamura Corp Device for adjusting height of armrest or the like of chair

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JP2004113501A (en) * 2002-09-26 2004-04-15 Okamura Corp Armrest device for seat
JP2005185619A (en) * 2003-12-26 2005-07-14 Okamura Corp Device for adjusting height of armrest or the like of chair

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101008888B1 (en) 2008-12-09 2011-01-17 듀오백코리아 주식회사 Armrest height controlling apparatus
JP2011005153A (en) * 2009-06-29 2011-01-13 Itoki Corp Armrest device
KR200465275Y1 (en) 2012-08-22 2013-02-08 주식회사 리바트 Lifting armrest
KR101547275B1 (en) 2014-05-02 2015-08-26 주식회사 다원체어스 Armrest for Chair
JP2014166597A (en) * 2014-06-20 2014-09-11 Itoki Corp Armrest device
JP2020069337A (en) * 2018-11-02 2020-05-07 株式会社オカムラ Backrest and chair
JP7204427B2 (en) 2018-11-02 2023-01-16 株式会社オカムラ backrest and chair
KR102356354B1 (en) * 2021-07-28 2022-02-08 주식회사 다원체어스 Armrest for chair

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