JP5458675B2 - Chair footrest height adjustment device - Google Patents

Chair footrest height adjustment device Download PDF

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JP5458675B2
JP5458675B2 JP2009132889A JP2009132889A JP5458675B2 JP 5458675 B2 JP5458675 B2 JP 5458675B2 JP 2009132889 A JP2009132889 A JP 2009132889A JP 2009132889 A JP2009132889 A JP 2009132889A JP 5458675 B2 JP5458675 B2 JP 5458675B2
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footrest
pedestal
fitted
chair
support
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JP2010279413A (en
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成規 竹原
和士 岡本
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Itoki Corp
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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/50Supports for the feet or the legs coupled to fixed parts of the chair

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Description

本発明は、椅子の足載せ台高さ調節装置に係わり、更に詳しくは高さ調節可能な回転椅子の支軸に設けた足載せ台を所定高さ位置に固定する装置に関するものである。   The present invention relates to a chair footrest height adjusting device, and more particularly to an apparatus for fixing a footrest provided on a support shaft of a rotatable chair that can be height-adjusted to a predetermined height position.

従来から学習用の椅子は、子供の体格に応じて、また成長に応じて座部の高さを調節できるようにしたものが主流である。回転椅子では、脚部の脚柱に伸縮自在なガスシリンダーを内蔵し、座部の高さを容易に調節できるようになっている。一方、机においては、天板の高さを調節できるものもあるが、最近では天板の高さが固定式のものが主流である。その場合、机天板を基準として、椅子の座部の高さを調節することになるが、体格が小さい場合には着座状態で足が床面から離れるようになる。そこで、椅子の脚部に足載せ台を高さ調節可能に設け、着座者の足を安楽な状態で載せることができるようにしている。   Conventionally, chairs for learning have been mainly designed so that the height of the seat can be adjusted according to the physique of the child and according to the growth. The swivel chair incorporates a telescopic gas cylinder in the pedestal of the leg so that the height of the seat can be easily adjusted. On the other hand, there are desks that can adjust the height of the top plate, but recently, the top plate has a fixed height. In that case, the height of the seat portion of the chair is adjusted with reference to the tabletop, but when the physique is small, the foot comes off the floor surface in the sitting state. Therefore, a footrest is provided on the leg of the chair so that the height can be adjusted, so that the seated person's feet can be placed comfortably.

ここで、回転椅子の脚柱に設ける足載せ台として、中央部に脚柱に保持する保持部を設け、該保持部から外側に延びた支持部で足載せ部を支持した構造が一般的であり、前記保持部を前記脚柱に外嵌し、締付手段で該脚柱を外側から締付けて所定高さで保持するようにしている。例えば、平面視リング状の保持部を、前記座部を外した状態で脚柱の上端から外嵌し、保持部を貫通して側方から螺合した締付ネジで前記脚柱の側面を押圧して締付ける構造や、座部を脚柱に取付けたまま、脚柱の側方から平面視C字形の保持部を該脚柱に外嵌し、保持部の開放部に前記脚柱を取り囲むように別部材を配して、該別部材と保持部とで脚柱を取り囲み、そして保持部を貫通して側方から螺合した締付ネジで前記脚柱の側面を押圧して締め付ける構造(特許文献1参照)や、別部材の一端部を保持部に軸着し、他端部を締付ネジで保持部に接近するように変位させて、保持部と別部材とで脚柱を周囲から締め付ける構造(特許文献2参照)等が提案されている。   Here, as a footrest provided on the pedestal of the swivel chair, a structure in which a holding portion that is held by the pedestal is provided at the center and the footrest is supported by a support portion that extends outward from the holding portion is generally used. The holding portion is externally fitted to the pedestal, and the pedestal is tightened from the outside by a tightening means and held at a predetermined height. For example, a ring-shaped holding portion in plan view is fitted from the upper end of the pedestal with the seat portion removed, and the side surface of the pedestal is fixed with a tightening screw that passes through the holding portion and is screwed from the side. With the structure to be pressed and tightened or with the seat part attached to the pedestal, a C-shaped holding part in a plan view is externally fitted to the pedestal from the side of the pedestal, and the pedestal is surrounded by the opening part of the holding part A structure in which a separate member is arranged, the leg column is surrounded by the separate member and the holding portion, and the side surface of the pedestal column is pressed and tightened with a fastening screw that penetrates the holding portion and is screwed from the side. (See Patent Document 1) Or, one end portion of another member is pivotally attached to the holding portion, the other end portion is displaced so as to approach the holding portion with a fastening screw, and the pedestal is moved between the holding portion and the separate member. A structure (see Patent Document 2) that is tightened from the periphery has been proposed.

しかし、円柱状の脚柱に足載せ台の保持部を締付手段で締め付けて保持する構造では、締付ネジが緩むと下方にずれ落ちることは原理的に避けられない。また、常時、締付ネジをきつく締め付けておく必要があるので、足載せ台の高さを調節するときに締付ネジを緩めることが困難な場合も生じる。一方、足載せ台のずり落ちを防止するために、前記脚柱の側面に上下に所定間隔毎に係合穴を設けておき、前記締付ネジの先端を所定の係合穴に係合するようにしたものも提供されているが、係合穴が露出して見苦しかったり、また締付ネジと係合穴の位置合わせが面倒であったり、足載せ台の回転位置が固定的であるので回転対称形の足載せ部にする必要があるといった課題はある。   However, in a structure in which the holding part of the footrest is fastened and held on the columnar pedestal by the tightening means, it is inevitable that the screw is displaced downward when the tightening screw is loosened. In addition, since it is necessary to always tighten the tightening screw, it may be difficult to loosen the tightening screw when adjusting the height of the footrest. On the other hand, in order to prevent the footrest from slipping, an engagement hole is provided on the side surface of the pedestal vertically at predetermined intervals, and the tip of the tightening screw is engaged with the predetermined engagement hole. However, the engagement hole is exposed and unsightly, the positioning of the tightening screw and the engagement hole is troublesome, and the rotation position of the footrest is fixed. There is a problem that it is necessary to use a rotationally symmetrical footrest.

特開2004−159920号公報JP 2004-159920 A 特開2007−181614号公報JP 2007-181614 A

そこで、本発明が前述の状況に鑑み、解決しようとするところは、椅子の脚柱に足載せ台の保持部を外嵌し、所定高さに足載せ台を保持するとともに、簡単な構造によって足載せ台のずり落ちを確実に防止することができる椅子の足載せ台高さ調節装置を提供する点にある。   Therefore, in view of the above-described situation, the present invention intends to solve the problem by externally fitting the holding portion of the footrest to the chair pillar, holding the footrest at a predetermined height, and using a simple structure. It is in providing a chair footrest height adjusting device that can reliably prevent the footrest from slipping down.

本発明は、前述の課題解決のために、脚部の支持台に脚柱を立設し、該脚柱に内蔵した伸縮自在なガスシリンダーの上端に座部を取付け、該脚柱に足載せ台の保持部を外嵌して所定高さに保持する構造の椅子の足載せ台高さ調節装置であって、前記脚部の支持台は水平な面を有し、前記保持部の下面とは平行であり、前記支持台と前記足載せ台の保持部の間の前記脚柱に、上面と下面が平行に形成された単又は複数の規制部材を側方から嵌着して、前記足載せ台に加わる荷重を規制部材を介して前記脚部の支持台で受けるとともに、規制部材の枚数を調節して足載せ台の高さを多段階で調節することを特徴とする椅子の足載せ台高さ調節装置を構成した(請求項1)。 In order to solve the above-mentioned problems, the present invention is such that a pedestal is erected on a support for the leg, a seat is attached to the upper end of an extendable gas cylinder built in the pedestal, and the foot is placed on the pedestal A footrest height adjusting device for a chair having a structure in which a holding portion of a table is externally fitted and held at a predetermined height, the support portion of the leg portion having a horizontal surface, and a lower surface of the holding portion, Are parallel to each other, and one or a plurality of regulating members whose upper and lower surfaces are formed in parallel are fitted to the pedestal between the support and the holding part of the footrest from the side, and the foot The load on the platform is received by the support of the leg portion via a regulating member, and the height of the platform is adjusted in multiple stages by adjusting the number of regulating members. A table height adjusting device was constructed (claim 1).

ここで、前記規制部材は、平面視略C字形の弾性変形可能な部材であり、複数の該規制部材を前記脚柱に側方から嵌着して上下に積層し、前記足載せ台の保持部は前記脚柱に上方から嵌合し又は側方から嵌合して保持する構造であることが好ましい(請求項2)。   Here, the restricting member is an approximately C-shaped elastically deformable member in a plan view, and a plurality of the restricting members are fitted to the pedestal from the side and stacked vertically to hold the footrest. It is preferable that the portion has a structure that fits and holds the pedestal from above or from the side (Claim 2).

あるいは、前記規制部材は、複数の部材を組み合わせたリング状の複合部材であり、複数の該規制部材を前記脚柱に側方から嵌着して上下に積層し、前記足載せ台の保持部は前記脚柱に上方から嵌合し又は側方から嵌合して保持する構造であることが好ましい(請求項3)。 Alternatively, the restriction member is a ring-shaped composite member in which a plurality of members are combined , the plurality of restriction members are fitted to the pedestal from the side and stacked vertically, and the holding portion of the footrest Is preferably fitted to the pedestal from above or from the side and held (claim 3).

具体的には、前記脚部は、放射状に延びた複数の支脚の中心部の支持台に脚柱を立設してなるのである(請求項4)。 Specifically, the leg portion is formed by standing a pedestal on a support base at a central portion of a plurality of support legs extending radially.

そして、前記足載せ台の高さ調節に使用しなかった不要な規制部材を保持部より上方の前記脚柱に嵌着して保管してなるのである(請求項5)。 Then, in the range formed by store fitted in the footrests height adjustment unnecessary restriction member above the pedestal than the holding portion which was not used to (claim 5).

以上にしてなる請求項1に係る発明の椅子の足載せ台高さ調節装置は、脚部の支持台に脚柱を立設し、該脚柱に内蔵した伸縮自在なガスシリンダーの上端に座部を取付け、該脚柱に足載せ台の保持部を外嵌して所定高さに保持する構造の椅子の足載せ台高さ調節装置であって、前記脚部の支持台は水平な面を有し、前記保持部の下面とは平行であり、前記支持台と前記足載せ台の保持部の間の前記脚柱に、上面と下面が平行に形成された単又は複数の規制部材を側方から嵌着して、前記足載せ台に加わる荷重を規制部材を介して前記脚部の支持台で受けるとともに、規制部材の枚数を調節して足載せ台の高さを多段階で調節するので、保持部を脚柱に保持する構造がどのようなものであっても、簡単な構造で足載せ台の下降を確実に防止することができ、支持台の上面と規制部材が面接触し、規制部材と保持部の下面と面接触して足載せ台に加わる荷重を支持台で受ける構造であるので、足載せ台の支持強度が非常に高く、足載せ台の上に立っても安定であり、しかも保持部より下方の脚柱に複数の規制部材を嵌着する構造では、規制部材の枚数を設定することにより、足載せ台の高さを段階で調節することができるのである。 In the chair footrest height adjusting device according to the first aspect of the present invention, the leg column is erected on the leg support and is seated on the upper end of the extendable gas cylinder built in the leg column. A footrest height adjusting device for a chair having a structure in which a holding portion of a footrest is externally fitted to the pedestal and held at a predetermined height, and the support base of the leg is a horizontal surface And a single or a plurality of restricting members having an upper surface and a lower surface formed in parallel on the pedestal between the support base and the holding portion of the footrest. Fits from the side and receives the load applied to the footrest from the support portion of the leg through the restricting member, and adjusts the number of restricting members to adjust the height of the footrest in multiple stages Therefore, regardless of the structure that holds the holding part to the pedestal, the simple structure reliably prevents the footrest from descending. Bets can be, top the regulating member of the support is in surface contact, since it is the structure which receives a load applied to contact the lower surface and the surface of the holding portion and the regulating member to stand footrest in the support base, the footrest support strength Is very stable and stable even when standing on a footrest, and in a structure in which a plurality of restricting members are fitted to the pedestals below the holding portion, the number of restricting members can be set to set the footrest. The height of the platform can be adjusted in multiple steps.

請求項2によれば、前記規制部材は、平面視略C字形の弾性変形可能な部材であり、複数の該規制部材を前記脚柱に側方から嵌着して上下に積層し、前記足載せ台の保持部は前記脚柱に上方から嵌合し又は側方から嵌合して保持する構造であるので、脚柱に側方から規制部材を容易に嵌着することができ、また規制部材を脚柱から外すことも容易であり、足載せ台の高さに応じて必要枚数の規制部材を脚柱に容易に装着することができる。   According to a second aspect of the present invention, the restricting member is an elastically deformable member having a substantially C-shape in plan view, and a plurality of the restricting members are fitted to the pedestal from the side and stacked vertically. Since the holding part of the mounting base is structured to be fitted to the pedestal from above or from the side to be held, the regulating member can be easily fitted to the pedestal from the side, It is easy to remove the member from the pedestal, and a required number of regulating members can be easily attached to the pedestal according to the height of the footrest.

請求項3によれば、前記規制部材は、複数の部材を組み合わせたリング状の複合部材であり、複数の該規制部材を前記脚柱に側方から嵌着して上下に積層し、前記足載せ台の保持部は前記脚柱に上方から嵌合し又は側方から嵌合して保持する構造であるので、個々の規制部材が回転してずれても外観性に及ぼす影響は少なく、また足載せ台の保持部が脚柱に側方から嵌合して保持する構造である場合には、複数のリング状規制部材を脚柱に嵌挿したまま、余分な枚数の規制部材を上方へスライドさせて露出させた脚柱に側方から足載せ台の保持部を嵌合して保持することにより高さを容易に調節することができる。 According to a third aspect of the present invention, the restricting member is a ring-shaped composite member in which a plurality of members are combined, and the plurality of restricting members are fitted to the pedestal from the side and stacked vertically. Since the holding part of the platform is structured to be fitted and held on the pedestal from above or from the side, there is little influence on the appearance even if individual regulating members are rotated and displaced, and When the holding part of the footrest is structured to be fitted and held on the pedestal from the side, an excessive number of regulating members are moved upward with the plurality of ring-shaped regulating members fitted into the pedestal. The height can be easily adjusted by fitting and holding the holding part of the footrest from the side to the exposed pedestal by sliding.

請求項4によれば、前記脚部は、放射状に延びた複数の支脚の中心部の支持台に脚柱を立設してなるので、足載せ台支持強度が非常に高く、足載せ台の上に立っても安定である。 According to claim 4, wherein the legs, since the erected pedestals to the support of the central portion of the plurality of support legs radially extending, very high footrests support strength, the footrest Standing on top of it is also stable.

請求項5によれば、前記足載せ台の高さ調節に使用しなかった不要な規制部材を保持部より上方の前記脚柱に嵌着して保管してなるので、保持部より下方の脚柱に嵌着する規制部材の枚数を設定して足載せ台の高さを他段階に調節した場合に、余った規制部材を保持部より上方の脚柱に嵌着して保管することができるので、規制部材を紛失することがなく、必要なときに必要枚数の規制部材を使用することができる。 According to the fifth aspect of the present invention, an unnecessary restricting member that is not used for adjusting the height of the footrest is fitted and stored in the pedestal above the holding portion, so that the leg below the holding portion is stored. When the number of regulating members to be fitted to the columns is set and the height of the footrest is adjusted to another stage, the surplus regulating members can be fitted and stored on the leg columns above the holding portion. Therefore, the necessary number of regulating members can be used when necessary without losing the regulating members.

本発明に係る椅子の足載せ台高さ調節装置を適用した回転椅子の斜視図である。It is a perspective view of the rotation chair which applied the footrest height adjusting device of the chair concerning the present invention. 同じく足載せ台を高い位置で保持した状態の椅子の側面図である。It is a side view of the chair of the state which similarly held the footrest in the high position. 同じく足載せ台を低い位置で保持した状態の椅子の側面図である。It is a side view of the chair of the state which similarly held the footrest in the low position. 第1実施形態の規制部材の斜視図である。It is a perspective view of the control member of a 1st embodiment. 同じく規制部材を示し、(a)は平面図、(b)は側面図である。Similarly, a restricting member is shown, (a) is a plan view, (b) is a side view. 脚部に足載せ台を取付けた状態の部分縦断側面図である。It is a partial vertical side view of the state which attached the footrest to the leg part. 足載せ台の保持部を脚柱に保持する構造を示す横断平面図である。It is a cross-sectional top view which shows the structure which hold | maintains the holding part of a footrest to a pedestal. 足載せ台の保持部を脚柱に保持する他の構造を示す横断平面図である。It is a cross-sectional top view which shows the other structure which hold | maintains the holding part of a footrest to a pedestal. 規制部材の第1実施形態の第1変形例を示す斜視図である。It is a perspective view which shows the 1st modification of 1st Embodiment of a control member. 規制部材の第1実施形態の第2変形例を示す斜視図である。It is a perspective view which shows the 2nd modification of 1st Embodiment of a control member. 規制部材の第1実施形態の第3変形例を示す斜視図である。It is a perspective view which shows the 3rd modification of 1st Embodiment of a control member. 規制部材の第2実施形態を示す斜視図である。It is a perspective view which shows 2nd Embodiment of a control member. 規制部材の第2実施形態の第1変形例を示し、(a)は斜視図、(b)は分割部材の斜視図である。The 1st modification of 2nd Embodiment of a control member is shown, (a) is a perspective view, (b) is a perspective view of a division member. 規制部材の第2実施形態の第2変形例を示し、(a)は斜視図、(b)は分割部材の斜視図である。The 2nd modification of 2nd Embodiment of a control member is shown, (a) is a perspective view, (b) is a perspective view of a division member. 規制部材の第2実施形態の第3変形例を示し、(a)は閉じた状態の斜視図、(b)は開いた状態の斜視図である。The 3rd modification of 2nd Embodiment of a control member is shown, (a) is a perspective view of the closed state, (b) is a perspective view of the open state.

次に、添付図面に示した実施形態に基づき、本発明を更に詳細に説明する。図1は本発明の実施形態に係る回転椅子を示し、図2〜図8は本発明の詳細を示し、図中符号1は脚部、2は座部、3は背凭れ部、4は足載せ台をそれぞれ示している。   Next, the present invention will be described in more detail based on the embodiments shown in the accompanying drawings. FIG. 1 shows a swivel chair according to an embodiment of the present invention, and FIGS. 2 to 8 show details of the present invention, in which 1 is a leg, 2 is a seat, 3 is a backrest, and 4 is a foot. Each platform is shown.

本発明に係る回転椅子は、脚部1に座部2を回転可能に支持するとともに、前記座部2に対して背凭れ部3を前後及び高さ調節可能に支持した構造である。   The swivel chair according to the present invention has a structure in which a seat portion 2 is rotatably supported on a leg portion 1 and a backrest portion 3 is supported with respect to the seat portion 2 so as to be adjustable in the front and rear directions and in height.

具体的には、前記脚部1は、放射状に延びた5本の支脚5,…の中心部に円柱状の脚柱6を立設し、該脚柱6に伸縮自在なガスシリンダー7の内蔵した構造である。前記座部2は、金属製の支持体8の上部に座板9を取付けた構造であり、該支持体8を前記脚部1のガスシリンダー7の上端に連結している。更に、前記ガスシリンダー7は、前記脚柱6に対して回転規制具10で回転可能状態と回転不能状態がとれるようになっている。また、前記背凭れ部3は、両側に立起した背凭れ支持杆11,11の上端部に背凭れ板12を取付けた構造であり、両背凭れ支持杆11,11の下端部は連結杆13で連続し、正面視略U字形の一体部材となっており、この連結杆13を前記座部2の支持体8に調節可能に連結している。つまり、前記支持体8の下面後部に前下がりの傾斜レール部14を設け、該傾斜レール部14に沿ってスライド移動する移動体15を設け、前記背凭れ部3の連結杆13を該移動体15に固定するとともに、調節ハンドルを操作して前記移動体15の傾斜レール部14に対する位置を固定できるようになっている。それにより、着座者の体格に応じて前記背凭れ板12の奥行方向の位置と高さを同時に調節できるようになっている。   Specifically, the leg portion 1 includes a columnar leg 6 standing upright at the center of five radially extending supporting legs 5,... This is the structure. The seat 2 has a structure in which a seat plate 9 is attached to an upper portion of a metal support 8, and the support 8 is connected to the upper end of the gas cylinder 7 of the leg 1. Further, the gas cylinder 7 can be rotated with respect to the pedestal 6 by a rotation restricting tool 10 and can be rotated. The backrest portion 3 has a structure in which a backrest plate 12 is attached to the upper end portions of the backrest support rods 11 and 11 erected on both sides. 13 is an integral member that is substantially U-shaped when viewed from the front, and this connecting rod 13 is adjustably connected to the support 8 of the seat portion 2. That is, an inclined rail portion 14 is provided at the rear of the lower surface of the support body 8 and a moving body 15 that slides along the inclined rail portion 14 is provided. The connecting rod 13 of the backrest portion 3 is connected to the moving body. 15, and the position of the movable body 15 relative to the inclined rail portion 14 can be fixed by operating an adjustment handle. Thereby, the position and height of the backrest 12 in the depth direction can be adjusted simultaneously according to the physique of the seated person.

前記足載せ台4は、図7及び図8に示すように、前記脚部1の脚柱6に保持する保持部16と、該保持部16から外側に延びた支持部17と、該支持部17で支持された足載せ部18とから構成され、前記保持部16は、前記脚柱6に外嵌し、締付手段19で該脚柱6を外側から締付けることにより回転不能に保持することができるようになっている。更に、前記支脚5,…の中心部の支持台20と前記足載せ台4の保持部16との間の前記脚柱6に、単又は複数の規制部材21,…を嵌着し、前記足載せ台4の下降を規制している。前記脚部1の支持台20は水平な面を有し、前記保持部16の下面とは平行になっている。尚、本発明において、前記締付手段19の存在は必須ではない。   As shown in FIGS. 7 and 8, the footrest 4 includes a holding portion 16 that is held by the pedestal 6 of the leg portion 1, a support portion 17 that extends outward from the holding portion 16, and the support portion. The holding part 16 is externally fitted to the leg pillar 6 and is held non-rotatable by tightening the leg pillar 6 from the outside by the fastening means 19. Can be done. Further, a single or a plurality of regulating members 21 are fitted on the pedestal 6 between the support base 20 at the center of the support legs 5... And the holding part 16 of the footrest 4. The descent of the platform 4 is restricted. The support 20 of the leg portion 1 has a horizontal surface and is parallel to the lower surface of the holding portion 16. In the present invention, the presence of the fastening means 19 is not essential.

そして、第1実施形態の前記規制部材21は、図4及び図5に示すように、平面視略C字形の弾性変形可能な部材であり、側面視において上面と下面が平行に形成された合成樹脂製の一体成形品である。前記規制部材21は、本体部22が前記脚柱6の外周面の半径に一致する内径を有し、両開放端は外側へ若干拡開した受入部23,23を形成し、前記脚柱6に側方から容易に外嵌できるようになっている。   The regulating member 21 of the first embodiment is an elastically deformable member having a substantially C shape in plan view as shown in FIGS. 4 and 5, and is a composite in which an upper surface and a lower surface are formed in parallel in a side view. It is an integrally molded product made of resin. The restricting member 21 has a main body portion 22 having an inner diameter that coincides with the radius of the outer peripheral surface of the pedestal 6, and both open ends form receiving portions 23, 23 that are slightly expanded outward. It can be easily fitted from the side.

本発明では、前記脚柱6に外嵌した保持部16を締付手段19で締付けて保持することを前提とする以外は、前記足載せ台4の構造は任意である。図7に示した実施形態では、平面視形状において約270度の中心角を有する足載せ部18を有し、その中止部に円筒形の保持部16を形成し、該保持部16の周囲から半リング状の前記足載せ部18に等間隔で3本の支持部17,…が延びて一体化し、前記保持部16には前記脚柱6の半径と一致又は若干大きい半径の嵌合孔24を形成してあり、前記足載せ部18が存在しない側面から嵌合孔24にかけて締付手段19として締付ネジ25を螺合した構造である。この場合、前記座部2を外した状態で、前記脚柱6の上端から前記足載せ台4の保持部16の嵌合孔24を嵌挿し、該足載せ台4の保持部16と脚部1の支持台20との間の脚柱6に所定枚数の規制部材21を嵌着し、各規制部材21,…を積層し、その上に前記保持部16を載置した状態で、前記締付ネジ25をねじ込んで前記脚柱6の側面を押圧して回転しないように保持するのである。ここで、前記足載せ台4の高さ調節に使用しない残余の規制部材21は、前記保持部16より上方の脚柱6に嵌着して保管するのである。   In the present invention, the structure of the footrest 4 is arbitrary except that it is assumed that the holding portion 16 fitted around the pedestal 6 is fastened and held by the fastening means 19. In the embodiment shown in FIG. 7, the footrest portion 18 having a central angle of about 270 degrees in the plan view shape is formed, and a cylindrical holding portion 16 is formed at the stop portion, and the periphery of the holding portion 16 is formed. Three support portions 17,... Extend and be integrated with the half-ring-shaped footrest portion 18 at equal intervals, and the holding portion 16 has a fitting hole 24 having a radius that is the same as or slightly larger than the radius of the leg column 6. And a tightening screw 25 is screwed as a tightening means 19 from the side surface where the footrest portion 18 does not exist to the fitting hole 24. In this case, with the seat portion 2 removed, the fitting hole 24 of the holding portion 16 of the footrest 4 is fitted and inserted from the upper end of the pedestal 6, and the holding portion 16 and the leg portion of the footrest 4 are inserted. A predetermined number of restricting members 21 are fitted on the pedestal 6 between the support base 20 and the restricting members 21,... Are stacked, and the holding part 16 is placed on the restricting members 21,. The attached screw 25 is screwed in to press the side surface of the pedestal 6 and hold it so as not to rotate. Here, the remaining restricting member 21 that is not used for adjusting the height of the footrest 4 is fitted and stored in the pedestal 6 above the holding portion 16.

また、図8に示した実施形態では、平面視形状において約270度の中心角を有する足載せ部18を有し、その中止部に該足載せ部18と略同じ中心角を有する半円筒形の保持部16を形成し、該保持部16の周囲から半リング状の前記足載せ部18に等間隔で3本の支持部17,…が延びて一体化し、前記保持部16の内周面は前記脚柱6の半径と一致又は若干大きい半径の半円筒面26となっており、前記脚柱6を側方から受け入れることができるようになっている。更に、前記締付手段19として、締付部材27の一端部を前記保持部16の開放部の一端部に脚柱6と平行な支軸28で回動可能に軸着し、締付部材27の他端部を締付ネジ29で前記保持部16の開放部の他端部に、該保持部16に接近するように変位させて、該保持部16と締付部材27とで前記脚柱6を周囲から締め付けるのである。勿論、本実施形態でも、前記足載せ台4の保持部16と脚部1の支持台20との間の脚柱6に所定枚数の規制部材21を嵌着し、各規制部材21,…を積層し、その上に前記保持部16を載置した状態で、前記締付ネジ29で締め付けるのである。   Further, in the embodiment shown in FIG. 8, a semi-cylindrical shape having a footrest portion 18 having a central angle of about 270 degrees in a plan view shape and having a central angle substantially the same as the footrest portion 18 at the stop portion. Are formed at the same interval from the periphery of the holding portion 16 to the half-ring-shaped footrest portion 18 so as to be integrated with each other, and the inner peripheral surface of the holding portion 16 is integrated. Is a semi-cylindrical surface 26 having a radius that is the same as or slightly larger than the radius of the pedestal 6 so that the pedestal 6 can be received from the side. Further, as the tightening means 19, one end portion of the tightening member 27 is pivotally attached to one end portion of the opening portion of the holding portion 16 so as to be rotatable by a support shaft 28 parallel to the pedestal 6. The other end portion of the holding portion 16 is displaced to the other end portion of the opening portion of the holding portion 16 with a tightening screw 29 so as to approach the holding portion 16. 6 is tightened from the periphery. Of course, also in this embodiment, a predetermined number of restricting members 21 are fitted on the pedestal 6 between the holding portion 16 of the footrest 4 and the support 20 of the leg 1, and the restricting members 21,. It is laminated and tightened with the tightening screw 29 in a state where the holding portion 16 is placed thereon.

本実施形態では、3枚の規制部材21,…を用いて、前記足載せ台4の高さを4段階に調節することができるようになっているが、上下高さが低い規制部材21を更に多数枚用いて足載せ台4の高さ調節ピッチを小さくし、より細かな高さ調節ができるようにすることも可能である。図2は、前記保持部16と支持台20の間に3枚の規制部材21,…を介装した状態で、最も高い位置に足載せ台4を設定している。図3は、記保持部16と支持台20の間に1枚の規制部材21,…を介装した状態で、下から2段目の高さ位置に足載せ台4を設定している。   In the present embodiment, the height of the footrest 4 can be adjusted in four stages using the three regulating members 21,. Furthermore, it is also possible to use a large number of sheets to reduce the height adjustment pitch of the footrest 4 so that the height can be adjusted more finely. In FIG. 2, the footrest 4 is set at the highest position with three regulating members 21,... Interposed between the holding portion 16 and the support base 20. In FIG. 3, the footrest 4 is set at the height of the second step from the bottom with a single regulating member 21 interposed between the holding portion 16 and the support base 20.

次に、図9〜図11に基づいて、第1実施形態の前記規制部材21の変形例を説明する。図9に示した第1実施形態の第1変形例の規制部材21Aは、前記受入部23,23の一方の上面に半球状の突起30を突設し、他方の上面に該突起30を係合可能な凹部31を形成し、前記受入部23,23の下面には逆の関係で突起30と凹部31を形成し、上下反転対称形となっている。この規制部材21Aは、上下に重ねた際に、突起30と凹部31が係合し、正確な位置に積層できるようにしたものであり、外観性が良くなる利点がある。その代わり、前記保持部16の下面と支持台20の上面に前記突起30を受け入れる環状凹部を形成する必要がある。尚、前記支持台20の上面に前記突起30を係合する凹部を一定間隔毎に形成した凹凸面を形成し、何れかの凹部に前記突起30を係合して規制部材21Aの回転を防止することも可能である。   Next, based on FIGS. 9-11, the modification of the said limitation member 21 of 1st Embodiment is demonstrated. The restricting member 21A of the first modification of the first embodiment shown in FIG. 9 has a hemispherical protrusion 30 protruding on one upper surface of the receiving portions 23, 23, and the protrusion 30 is engaged on the other upper surface. A concave portion 31 that can be joined is formed, and the projections 30 and the concave portion 31 are formed on the lower surfaces of the receiving portions 23 and 23 in the reverse relationship, and are vertically inverted symmetrical. The regulation member 21A is configured such that the protrusions 30 and the recesses 31 engage with each other when stacked one above the other, and can be stacked at an accurate position, and has an advantage of improving the appearance. Instead, it is necessary to form an annular recess for receiving the protrusion 30 on the lower surface of the holding portion 16 and the upper surface of the support base 20. In addition, a concave / convex surface is formed on the upper surface of the support base 20 with concave portions for engaging the projections 30 at regular intervals, and the projections 30 are engaged with any of the concave portions to prevent rotation of the regulating member 21A. It is also possible to do.

また、図10に示した第1実施形態の第2変形例の規制部材21Bは、前記本体部22の外側面で、前記受入部23,23を設けた側とは反対側の中央部に、縦方向に延びた把手部32を突設するとともに、該把手部32を中心とした両側に三角形状の指掛け部33,33を突設したものである。この規制部材21Bは、前記把手部32を持って前記脚柱6に嵌着したり、回転角度を調節したりすることができ、また前記指掛け部33,33に指を掛けて手前に引いて脚柱6から外すことができる。   Further, the regulating member 21B of the second modification example of the first embodiment shown in FIG. 10 is an outer surface of the main body portion 22 at a central portion on the opposite side to the side where the receiving portions 23 and 23 are provided. A handle portion 32 extending in the vertical direction is projected and triangular finger-hanging portions 33 and 33 are projected on both sides of the handle portion 32 as a center. The restricting member 21B can be fitted to the pedestal 6 with the handle portion 32, and the rotation angle can be adjusted, and the finger-holding portions 33, 33 are hooked with fingers and pulled forward. It can be removed from the pedestal 6.

そして、図11に示した第1実施形態の第3変形例の規制部材21Cは、前述の規制部材21Bの把手部32の代わりに、水平方向に延びた把手部34を突設したものであり、その他は前述の規制部材21Bと同じである。   The regulating member 21C of the third modified example of the first embodiment shown in FIG. 11 is obtained by projecting a handle portion 34 extending in the horizontal direction instead of the handle portion 32 of the regulating member 21B. The others are the same as those of the restricting member 21B described above.

最後に、図12に基づいて第2実施形態の規制部材35を説明する。図13〜図15は第2実施形態の規制部材35の変形例である。先ず、図12に示した第2実施形態の規制部材35は、リング状の一体部材からなり、前記脚柱6に上方から嵌挿して装着する。この規制部材35は、合成樹脂製でも金属製でも構わない。そして、前記規制部材35は、一体成形することも、円筒部材を所定長さに切断して製造しても良い。この場合、図7に示すような足載せ台4の保持部16の構造では、前記座部2を脚柱6から外した状態で、必要枚数の規制部材35,…を該脚柱6に上方から嵌挿した後、前記足載せ台4の保持部16を前記脚柱6に上方から嵌合して保持するのである。一方、図8に示すような足載せ台4の保持部16の構造では、予め全枚数の規制部材35,…を該脚柱6に上方から嵌挿するとともに、該脚柱6の上端に前記座部2を取付けた状態で、余分な枚数の規制部材35を上方へスライドさせて露出させた脚柱6に側方から足載せ台4の保持部16を嵌合して保持することにより高さを調節するのである。尚、後述の規制部材35の変形例のように、複数の部材を組み合わせたリング状の複合部材で、前記脚柱6に後で側方から取付けることができる構造のものは、前述の第1実施形態の規制部材21と同様な使い方も可能である。   Finally, the regulating member 35 of the second embodiment will be described based on FIG. FIGS. 13-15 is a modification of the control member 35 of 2nd Embodiment. First, the regulating member 35 of the second embodiment shown in FIG. 12 is made of a ring-shaped integral member, and is fitted into the pedestal 6 from above. The restriction member 35 may be made of synthetic resin or metal. The regulating member 35 may be integrally formed or manufactured by cutting a cylindrical member into a predetermined length. In this case, in the structure of the holding portion 16 of the footrest 4 as shown in FIG. 7, the required number of regulating members 35,. Then, the holding part 16 of the footrest 4 is fitted and held on the pedestal 6 from above. On the other hand, in the structure of the holding portion 16 of the footrest 4 as shown in FIG. 8, all the restriction members 35,... Are inserted into the leg pillar 6 from above in advance, and the upper end of the leg pillar 6 is With the seat portion 2 attached, the holding portion 16 of the footrest 4 is fitted and held from the side to the exposed pedestal 6 by sliding an excessive number of regulating members 35 upward. It adjusts the thickness. In addition, as in a modification of the regulating member 35 described later, a ring-shaped composite member in which a plurality of members are combined and has a structure that can be attached to the pedestal 6 from the side later is the first described above. Usage similar to that of the regulating member 21 of the embodiment is also possible.

図13に示した第2実施形態の第1変形例の規制部材35Aは、二つの半リング状の分割部材36,37を互いの端部を突き合わせて接合してリング状となしたものである。図示したものは、分割部材36,37は同一形状部材であり、一方の接合端部に突部38を形成するとともに、他方の接合端部に前記突部38を嵌合する凹部39を形成したものである。ここで、前記突部38と凹部39の嵌合構造としては、着脱可能な構造や抜止め状態で無理嵌めする構造等が可能である。   The restricting member 35A of the first modification of the second embodiment shown in FIG. 13 is formed by joining two half-ring-shaped split members 36 and 37 with their end portions butted together to form a ring shape. . In the illustrated example, the split members 36 and 37 are members having the same shape, and a protrusion 38 is formed at one joining end, and a recess 39 is formed at the other joining end to fit the protrusion 38. Is. Here, as a fitting structure of the protrusion 38 and the recess 39, a detachable structure, a structure forcibly fitting in a retaining state, or the like is possible.

図14に示した第2実施形態の第2変形例の規制部材35Bは、二つの半リング状の分割部材40,41を互いの端部を軸方向にスライドさせて係合してリング状となしたものである。図示したものは、分割部材40,41は同一形状部材であり、一方の接合端部に半径方向外向きの突条42とその基部に係合溝43を形成し、他方の接合端部に半径方向内向きの突条44とその基部に係合溝45を形成した形状である。そして、両分割部材40,41を互いに反転させて前記脚注6の外周面に沿わせ、一方の分割部材40の突条42と係合溝43にそれぞれ他方の分割部材41の係合溝45と突条44を軸方向にスライドさせて係合し、リング状の規制部材35Bとする。尚、前述の係合構造の変わりにアリとアリ溝の関係でも良い。   The regulating member 35B of the second modified example of the second embodiment shown in FIG. 14 has two ring-shaped split members 40 and 41 that are engaged with each other by sliding their end portions in the axial direction. It has been done. In the illustrated example, the split members 40 and 41 are members of the same shape, and a radially outward projecting ridge 42 and an engaging groove 43 are formed at one base end, and a radius is provided at the other end. This is a shape in which an inwardly extending protrusion 44 and an engagement groove 45 are formed in the base portion thereof. Then, the two split members 40 and 41 are reversed with respect to each other along the outer peripheral surface of the footnote 6, and the protrusions 42 and the engagement grooves 43 of the one split member 40 are respectively connected to the engagement grooves 45 of the other split member 41. The protrusion 44 is slid and engaged in the axial direction to form a ring-shaped restricting member 35B. In addition, the relationship between an ant and an ant groove may be sufficient instead of the above-mentioned engagement structure.

図15に示した第2実施形態の第3変形例の規制部材35Cは、二つの半リング状の分割部材46,47の一端部をヒンジ部48で開閉可能に連結するとともに、他端部を互いに係合部49で係脱可能に係合してリング状となしたものである。前記ヒンジ部48は、分割部材46,47の一端部を互いに噛合させ、軸方向のピン50で回動可能に連結した構造であるが、ピン50を使わずに構成することも可能である。また、前記係合部49は、一方の分割部材46の接合端部に半径方向外向きの突条51とその基部に係合溝52を形成し、他方の分割部材47の接合端部に半径方向内向きの突条53とその基部に係合溝54を形成した形状である。そして、両分割部材46,47を前記脚注6の側方から挟むように閉じて、分割部材46の突条51と係合溝52を分割部材47の係合溝54と突条53にそれぞれ係合して容易に拡開しないようにしている。   A restricting member 35C of the third modification of the second embodiment shown in FIG. 15 connects one end portions of two half-ring-shaped split members 46 and 47 so as to be openable and closable by a hinge portion 48, and the other end portion. The engagement portions 49 are detachably engaged with each other to form a ring shape. The hinge portion 48 has a structure in which one end portions of the split members 46 and 47 are engaged with each other and are pivotally connected by an axial pin 50. However, the hinge portion 48 may be configured without using the pin 50. Further, the engaging portion 49 is formed with a radially outward projecting ridge 51 at the joint end of one split member 46 and an engagement groove 52 at the base thereof, and a radius at the joint end of the other split member 47. This is a shape in which an inwardly extending ridge 53 and an engagement groove 54 are formed in the base portion thereof. Then, both the split members 46 and 47 are closed so as to be sandwiched from the side of the footnote 6, and the protrusion 51 and the engagement groove 52 of the division member 46 are respectively engaged with the engagement groove 54 and the protrusion 53 of the division member 47. In combination, they are not easily expanded.

1 脚部、 2 座部、
3 背凭れ部、 4 足載せ台、
5 支脚、 6 脚柱、
7 ガスシリンダー、 8 支持体、
9 座板、 10 回転規制具、
11 背凭れ支持杆、 12 背凭れ板、
13 連結杆、 14 傾斜レール部、
15 移動体、 16 保持部、
17 支持部、 18 足載せ部、
19 締付手段、 20 支持台、
21 規制部材、 21A 規制部材、
21B 規制部材、 21C 規制部材、
22 本体部、 23 受入部、
24 嵌合孔、 25 締付ネジ、
26 半円筒面、 27 締付部材、
28 支軸、 29 締付ネジ、
30 突起、 31 凹部、
32 把手部、 33 指掛け部、
34 把手部、 35 規制部材、
35A 規制部材、 35B 規制部材、
35C 規制部材、 36 分割部材、
37 分割部材、 38 突部、
39 凹部、 40 分割部材、
41 分割部材、 42 突条、
43 係合溝、 44 突条、
45 係合溝、 46 分割部材、
47 分割部材、 48 ヒンジ部、
49 係合部、 50 ピン、
51 突条、 52 係合溝、
53 突条、 54 係合溝。
1 leg, 2 seat,
3 backrest, 4 footrest,
5 support legs, 6 pedestals,
7 gas cylinder, 8 support,
9 Seat plate, 10 Rotation restrictor,
11 Back support ridge, 12 Back plate,
13 connecting rods, 14 inclined rails,
15 moving body, 16 holding part,
17 support part, 18 foot rest part,
19 tightening means, 20 support base,
21 restriction member, 21A restriction member,
21B regulating member, 21C regulating member,
22 body part, 23 receiving part,
24 fitting holes, 25 tightening screws,
26 semi-cylindrical surface, 27 clamping member,
28 spindles, 29 clamping screws,
30 protrusions, 31 recesses,
32 handle part, 33 finger hook part,
34 handle part, 35 regulating member,
35A regulating member, 35B regulating member,
35C regulating member, 36 dividing member,
37 split members, 38 protrusions,
39 recess, 40 split member,
41 split members, 42 ridges,
43 engaging groove, 44 ridge,
45 engaging groove, 46 dividing member,
47 divided members, 48 hinges,
49 engaging part, 50 pins,
51 ridges, 52 engaging grooves,
53 ridges, 54 engagement grooves.

Claims (5)

脚部の支持台に脚柱を立設し、該脚柱に内蔵した伸縮自在なガスシリンダーの上端に座部を取付け、該脚柱に足載せ台の保持部を外嵌して所定高さに保持する構造の椅子の足載せ台高さ調節装置であって、前記脚部の支持台は水平な面を有し、前記保持部の下面とは平行であり、前記支持台と前記足載せ台の保持部の間の前記脚柱に、上面と下面が平行に形成された単又は複数の規制部材を側方から嵌着して、前記足載せ台に加わる荷重を規制部材を介して前記脚部の支持台で受けるとともに、規制部材の枚数を調節して足載せ台の高さを多段階で調節することを特徴とする椅子の足載せ台高さ調節装置。 A pedestal is erected on the support of the leg, a seat is attached to the upper end of the extendable gas cylinder built in the pedestal, and the holding part of the footrest is externally fitted to the pedestal to a predetermined height. A height adjustment device for a footrest of a chair having a structure to be held by the support , wherein the support of the leg has a horizontal surface, and is parallel to a lower surface of the retainer, and the support and the footrest A single or a plurality of regulating members, whose upper and lower surfaces are formed in parallel, are fitted to the pedestal between the holding portions of the platform from the side, and the load applied to the footrest is transmitted through the regulating member. A chair footrest height adjusting device characterized in that the height of the footrest is adjusted in multiple stages while being received by a leg support and by adjusting the number of regulating members . 前記規制部材は、平面視略C字形の弾性変形可能な部材であり、複数の該規制部材を前記脚柱に側方から嵌着して上下に積層し、前記足載せ台の保持部は前記脚柱に上方から嵌合し又は側方から嵌合して保持する構造である請求項1記載の椅子の足載せ台高さ調節装置。   The restricting member is an elastically deformable member having a substantially C shape in plan view, and a plurality of the restricting members are fitted to the pedestal from the side and stacked vertically, and the holding portion of the footrest is The chair footrest height adjusting device according to claim 1, wherein the chair footrest height adjusting device is configured to be fitted to the pedestal from above or from the side to be held. 前記規制部材は、複数の部材を組み合わせたリング状の複合部材であり、複数の該規制部材を前記脚柱に側方から嵌着して上下に積層し、前記足載せ台の保持部は前記脚柱に上方から嵌合し又は側方から嵌合して保持する構造である請求項1記載の椅子の足載せ台高さ調節装置。 The restricting member is a ring-shaped composite member in which a plurality of members are combined , the plurality of restricting members are fitted to the pedestal from the side and stacked vertically, and the holding portion of the footrest is The chair footrest height adjusting device according to claim 1, wherein the chair footrest height adjusting device is configured to be fitted to the pedestal from above or from the side to be held. 前記脚部は、放射状に延びた複数の支脚の中心部の支持台に脚柱を立設してなる請求項1〜3何れかに記載の椅子の足載せ台高さ調節装置。 The said leg part is a footrest stand height adjustment apparatus of the chair in any one of Claims 1-3 standing on the support stand of the center part of the several supporting leg extended radially. 前記足載せ台の高さ調節に使用しなかった不要な規制部材を保持部より上方の前記脚柱に嵌着して保管してなる請求項1〜4何れかに記載の椅子の足載せ台高さ調節装置。 Stand placed chair legs according to claim 1 or formed by store fitted above the pedestal than the holding portion unnecessary restriction member was not used in the height adjustment of the footrest Height adjustment device.
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JPH11294688A (en) * 1998-04-09 1999-10-29 Fukuoka Marumoto Kk Pillar height adjusting tool
JP2007181614A (en) * 2006-01-10 2007-07-19 Kyuka Jitsugyo Kofun Yugenkoshi Foot rest of chair

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