JP4832977B2 - Up and down elastic structure of furniture legs - Google Patents

Up and down elastic structure of furniture legs Download PDF

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JP4832977B2
JP4832977B2 JP2006205761A JP2006205761A JP4832977B2 JP 4832977 B2 JP4832977 B2 JP 4832977B2 JP 2006205761 A JP2006205761 A JP 2006205761A JP 2006205761 A JP2006205761 A JP 2006205761A JP 4832977 B2 JP4832977 B2 JP 4832977B2
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leg
inner leg
intermediate inner
furniture
raised
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文博 今井
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Okamura Corp
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Description

本発明は、例えば天板昇降式のテーブル等の家具に用いられる脚体の上下伸縮構造に関する。   The present invention relates to a vertically extending structure of legs used for furniture such as a table that can be raised and lowered.

天板昇降式のテーブル等の家具においては、天板の高さを、使用者の体格や作業内容等に合わせて調節し、快適な作業環境を形成しうる利点がある。
このような家具には、伸縮可能な脚体が用いられるが、従来の脚体の伸縮構造としては、例えば特許文献１〜３に記載されているものがある。
特開２００１−１２８７４４号公報 特開２００３−１２５８４９号公報 特表２００３−５３０１８１号公報 In the furniture such as a table for raising and lowering the top plate, there is an advantage that the height of the top plate can be adjusted according to the physique of the user, the work content, etc., and a comfortable work environment can be formed.
For such furniture, a leg that can be expanded and contracted is used, and examples of the conventional leg stretchable structure include those described in Patent Documents 1 to 3.
JP 2001-128744 A JP 2003-125849 A Japanese translation of PCT publication No. 2003-530181

上記特許文献１及び２に記載されている脚体の伸縮構造は、いずれも、床面に接床する不動の外脚と、これに、昇降機構を介して上下動可能に内嵌された内脚との１段の入れ子構造であるため、外脚と内脚の嵌合部以上の昇降ストロークを確保することはできず、しかも、内脚を上昇させるほど、外脚との嵌合寸法が小さくなって、ぐらつき易くなるため、天板の上限の高さは自ずと制限される。   Each of the leg stretchable structures described in Patent Documents 1 and 2 has a fixed outer leg that touches the floor and an inner part that is fitted into the leg so as to move up and down via a lifting mechanism. Because of the one-stage nesting structure with the legs, it is not possible to secure a lifting stroke that is greater than the fitting part between the outer legs and the inner legs, and the more the inner legs are raised, the more the fitting dimensions with the outer legs are. Since it becomes small and becomes wobbled easily, the upper limit height of the top plate is naturally limited.

一方、特許文献３に記載の脚体の伸縮構造においては、脚体は、不動の外脚と、これに上下動可能に内嵌された中間内脚と、この中間内脚に上下動可能に内嵌された内脚との２段の入れ子構造となっているため、上記特許文献１及び２のものに比して、大きな昇降ストロークを確保することができる。   On the other hand, in the telescopic structure of the leg described in Patent Document 3, the leg is configured to be able to move up and down with respect to the stationary outer leg, an intermediate inner leg fitted therein so as to be movable up and down, and the intermediate inner leg. Since it has a two-stage nesting structure with the internally fitted inner legs, it is possible to secure a large lifting stroke as compared with those of Patent Documents 1 and 2.

しかし、脚体を伸長させるべく、昇降機構を作動させると、中間内脚は外脚に対して、内脚は中間内脚に対して、それぞれ同時に上昇する構造となっているため、互いの摺動面の摺動抵抗が大きくなるだけでなく、脚体の高さをあまり高くする必要がないときでも、脚体の外周面の中間部に、上下２段の段差が形成されてしまうため、体裁が悪くなる。   However, when the lifting mechanism is operated to extend the legs, the intermediate inner legs are lifted simultaneously with respect to the outer legs, and the inner legs are lifted simultaneously with respect to the intermediate inner legs. Not only does the sliding resistance of the moving surface increase, but even when it is not necessary to increase the height of the leg too much, a two-step difference is formed in the middle part of the outer peripheral surface of the leg, Appearance worsens.

また、中間内脚と内脚は、内部に収容された複雑な構造のねじ移動式の昇降機構により同時に昇降されるようになっているため、脚体の幅等が大型化するとともに、コスト高となる問題がある。   Further, the intermediate inner leg and the inner leg are simultaneously lifted and lowered by a screw moving type lifting mechanism having a complicated structure housed therein, so that the leg width and the like are increased in size and the cost is increased. There is a problem.

本発明は、上記問題点に鑑みてなされたもので、脚体の昇降ストロークを大としうるとともに、所定の高さまでは、内脚のみ、又は中間内脚が内脚に嵌合されたまま上昇しうるようにして、摺動面の摺動抵抗を小さくし、かつ外周面に上下２段の段差が形成されるのを防止し、さらに、昇降機構の構造を簡素化して、小型で安価な家具の脚体の上下伸縮構造を提供することを目的としている。   The present invention has been made in view of the above problems, and can raise and lower the stroke of the leg, and at a predetermined height, only the inner leg or the intermediate inner leg is raised while being fitted to the inner leg. In order to reduce the sliding resistance of the sliding surface and prevent the formation of two steps of upper and lower steps on the outer peripheral surface, and further simplify the structure of the lifting mechanism, so that it is small and inexpensive. The object is to provide a vertically extending structure for furniture legs.

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）上下方向を向く不動かつ筒状の外脚と、この外脚に昇降可能に内嵌された筒状の中間内脚と、この中間内脚に昇降可能に内嵌され、上端により家具の天板等を支持する内脚とにより脚体を構成し、この脚体を、脚体内に設けた昇降機構により伸縮させるようにした家具の脚体の上下伸縮構造において、前記内脚を、前記昇降機構により昇降させうるようにするとともに、前記中間内脚を、下向付勢手段により、常時下向きに付勢し、前記内脚が所定位置まで上昇したとき、この内脚と連動して、前記中間内脚が付勢手段に抗して上昇するようにする。 According to the present invention, the above problem is solved as follows.
(1) Immovable and cylindrical outer legs that face in the vertical direction, cylindrical intermediate inner legs that are fitted in the outer legs so as to be able to be raised and lowered, and inner legs that are fitted in the intermediate inner legs so as to be raised and lowered. In a vertically extending structure of the leg of the furniture in which the leg is constituted by an inner leg that supports the top plate and the like, and the leg is expanded and contracted by an elevating mechanism provided in the leg, the inner leg is In addition to being able to be raised and lowered by the elevating mechanism, the intermediate inner leg is always urged downward by the downward urging means, and when the inner leg is raised to a predetermined position, it is interlocked with the inner leg. The intermediate inner leg is raised against the urging means.

（２）上記(１)項において、下向付勢手段を、外脚と中間内脚の内部に設けられ、下端が外脚の下端に、かつ上端が中間内脚のに、それぞれ係止された引張りコイルばねとする。 (2) In the above item (1), the downward biasing means is provided inside the outer leg and the intermediate inner leg, and the lower end is locked to the lower end of the outer leg and the upper end is locked to the intermediate inner leg. A tension coil spring.

（３）上下方向を向く不動かつ筒状の外脚と、この外脚に昇降可能に内嵌された筒状の中間内脚と、この中間内脚に昇降可能に内嵌され、上端により家具の天板等を支持する内脚とにより脚体を構成し、この脚体を、脚体内に設けた昇降機構により伸縮させるようにした家具の脚体の上下伸縮構造において、前記内脚を、前記昇降機構により昇降させうるようにするとともに、前記中間内脚を、前記内脚に外嵌された状態で該内脚と共に上昇しうるように、上向付勢手段をもって常時上向きに付勢し、かつ中間内脚と内脚とが所定位置まで上昇したとき、ストッパ手段により中間内脚の上昇を停止し、内脚のみが上昇するようにする。 (3) Immovable and cylindrical outer legs facing upward and downward, cylindrical intermediate inner legs fitted in the outer legs so as to be able to be raised and lowered, and fitted into the intermediate inner legs so as to be raised and lowered, and furniture by an upper end. In a vertically extending structure of the leg of the furniture in which the leg is constituted by an inner leg that supports the top plate and the like, and the leg is expanded and contracted by an elevating mechanism provided in the leg, the inner leg is The lifting mechanism can be moved up and down, and the intermediate inner leg is always biased upward by an upward biasing means so that the intermediate inner leg can be lifted together with the inner leg while being fitted on the inner leg. When the intermediate inner leg and the inner leg are raised to a predetermined position, the raising of the intermediate inner leg is stopped by the stopper means so that only the inner leg is raised.

（４）上記(３)項において、上向付勢手段を、中間内脚と筒状とした内脚の内部に設けられ、下端が中間内脚の下端に、かつ上端が内脚の下端部に、それぞれ係止された引張りコイルばねとする。 (4) In the above item (3), the upward biasing means is provided inside the intermediate inner leg and the cylindrical inner leg, the lower end is the lower end of the intermediate inner leg, and the upper end is the lower end portion of the inner leg. The tension coil springs are respectively locked.

（５）上記(１)〜(４)項のいずれかにおいて、昇降機構が、下端が外脚の下端に固着された上下方向を向くめねじ杆と、このめねじ杆に螺合され、上端の回転駆動部が内脚の上端もしくは天板等の下面に固定されたねじ軸とを備えるものとする。 (5) In any one of the above items (1) to (4), the elevating mechanism is screwed into the female screw rod with the lower end fixed to the lower end of the outer leg and facing upward and the female screw rod, and the upper end And a screw shaft fixed to the upper end of the inner leg or the lower surface of the top plate or the like.

（６）上記(１)〜(５)項のいずれかにおいて、外脚の内周面と中間内脚の外周面とのいずれか一方、及び中間内脚の内周面と内脚の外周面とのいずれか一方に、それぞれ他方に摺接する摩擦抵抗の小さな合成樹脂製のスライダを設ける。 (6) In any one of the above items (1) to (5), either the inner peripheral surface of the outer leg or the outer peripheral surface of the intermediate inner leg, and the inner peripheral surface of the intermediate inner leg and the outer peripheral surface of the inner leg Is provided with a slider made of a synthetic resin having a small frictional resistance, which is in sliding contact with the other.

（７）上記(１)〜(６)項のいずれかにおいて、外脚と中間内脚との上端部内面に、それぞれストッパを内向きに設けるとともに、中間内脚と内脚における外面の上下方向の中央よりもやや下方に、それぞれ、前記ストッパと当接することにより、中間内脚及び内脚を上限位置で停止させる突部を外向きに突設する。 (7) In any one of the above items (1) to (6), stoppers are provided inwardly on the inner surfaces of the upper ends of the outer leg and the intermediate inner leg, and the outer surface in the intermediate inner leg and the inner leg is vertically oriented. A projecting portion for stopping the intermediate inner leg and the inner leg at the upper limit position is provided outwardly by contacting the stopper at a position slightly below the center.

（８）上記(１)〜(７)項のいずれかにおいて、外脚と中間内脚との下端部内面に、中間内脚及び内脚の下端が当接することにより、それらを下限位置で停止させるストッパを内向きに突設する。 (8) In any one of the above items (1) to (7), the lower ends of the intermediate inner leg and the inner inner leg are brought into contact with the inner surfaces of the lower end portions of the outer leg and the intermediate inner leg, so that they are stopped at the lower limit position. The stopper to be projected protrudes inward.

請求項１記載の発明によれば、不動の外脚に対し中間内脚が、また中間内脚に対し内脚がそれぞれ上昇するので、脚体の昇降ストロークを大とすることができる。
また、内脚が所定位置まで上昇するまでは、中間内脚は、付勢手段により、外脚内から上昇するのが規制され、内脚のみが上昇するようになっているので、所定の高さまでの上昇時の摺動面の摺動抵抗が小さくなるとともに、脚体の高さをあまり高くする必要のないときには、脚体の外周面に上下２段の段差が形成されるのが防止され、体裁がよくなる。 According to the first aspect of the present invention, since the intermediate inner leg rises with respect to the stationary outer leg and the inner leg rises with respect to the intermediate inner leg, the lifting stroke of the leg can be increased.
Further, until the inner leg is raised to a predetermined position, the intermediate inner leg is restricted from being raised from within the outer leg by the biasing means, and only the inner leg is raised. The sliding resistance of the sliding surface at the time of ascent is reduced, and when the height of the leg does not need to be so high, it is prevented that two steps of upper and lower steps are formed on the outer peripheral surface of the leg. , The appearance is better.

さらに、中間内脚は、内脚と連動して上昇し、かつ下向きの付勢手段により下降するようになっており、中間内脚を直接昇降させる昇降手段が不要であるため、複雑な構造の昇降機構を設ける必要はなく、脚体を小型化しうるとともに、コスト低減が図れる。   Further, the intermediate inner leg is raised in conjunction with the inner leg and lowered by the downward biasing means, and there is no need for a lifting means for directly raising and lowering the intermediate inner leg. There is no need to provide an elevating mechanism, the leg can be miniaturized, and cost can be reduced.

請求項２記載の発明によれば、汎用の安価な引張りコイルばねにより、中間内脚を確実に下向きに付勢しうるとともに、脚体を上限位置から下降させる際にも、中間内脚、内脚の順に順序よく下降させることができる。   According to the second aspect of the present invention, the intermediate inner leg can be reliably urged downward by the general-purpose inexpensive tension coil spring, and also when the leg is lowered from the upper limit position, It can be lowered in order of legs.

請求項３記載の発明によれば、上記請求項１と同様、脚体の昇降ストロークを大としうるとともに、中間内脚は、内脚に嵌合された状態で上昇し、所定位置まで上昇したしたとき、中間内脚の上昇が停止されて内脚のみが上昇するため、所定の高さまでの上昇時の摺動面の摺動抵抗が小さくなる。   According to the invention of claim 3, as in the case of claim 1 above, the lifting and lowering stroke of the leg can be increased, and the intermediate inner leg rises in a state fitted to the inner leg and rises to a predetermined position. In this case, since the rise of the intermediate inner leg is stopped and only the inner leg is raised, the sliding resistance of the sliding surface when rising to a predetermined height is reduced.

また、上記請求項１と同様、脚体の高さをあまり高くする必要のないときには、その外周面に上下２段の段差が形成されることはなく、しかも、中間内脚を直接昇降させる昇降手段も不要であるので、脚体の小型化とコスト低減が図れる。   Further, as in the first aspect, when the height of the leg body does not need to be so high, there is no upper and lower two-step difference on the outer peripheral surface, and the lifting and lowering that directly raises and lowers the intermediate inner leg. Since no means is required, the leg can be reduced in size and cost can be reduced.

請求項４記載の発明によれば、上記請求項２の発明と同様、汎用の安価な引張りコイルばねにより、中間内脚を確実に上向きに付勢しうるとともに、脚体を上限位置から下降させる際にも、内脚、中間内脚の順に順序よく下降させることができる。   According to the invention described in claim 4, as in the invention of claim 2, the intermediate inner leg can be reliably urged upward by the general-purpose inexpensive tension coil spring, and the leg is lowered from the upper limit position. Even in this case, the inner leg and the intermediate inner leg can be lowered in order.

請求項５記載の発明によれば、昇降機構の構造が簡単で、かつ前後左右寸法を最小限としうるので、それが収容される脚体の前後左右寸法も小さくなるとともに、めねじ杆及びねじ軸の長さを適宜選択するだけで、脚体の昇降ストロークを比較的容易に変更することができる。   According to the invention described in claim 5, the structure of the lifting mechanism is simple and the front / rear / left / right dimensions can be minimized. By simply selecting the length of the shaft, the lifting stroke of the leg can be changed relatively easily.

請求項６記載の発明によれば、外脚と中間内脚、及び中間内脚と内脚との互いの摺動面の摺動抵抗が小さくなるので、昇降機構に加わる負荷が軽減されるととともに、脚体を軽快に伸縮させることができる。   According to the sixth aspect of the present invention, since the sliding resistance of the sliding surfaces of the outer leg and the intermediate inner leg and between the intermediate inner leg and the inner leg is reduced, the load applied to the lifting mechanism is reduced. At the same time, the legs can be easily expanded and contracted.

請求項７記載の発明によれば、中間内脚及び内脚の上下方向の中央よりやや下方に、外脚及び中間内脚の上端部内面のストッパと当接する突部を設けたことにより、中間内脚及び内脚が上限位置まで上昇しても、それらと、外脚及び中間内脚との間には、比較的上下寸法の大きな嵌合代が確保されているので、脚体がぐらつく恐れはなく、天板等を安定して支持することができる。   According to the seventh aspect of the present invention, by providing the protrusion that contacts the stopper of the inner surface of the upper end portion of the outer leg and the intermediate inner leg slightly below the center of the intermediate inner leg and the inner leg in the vertical direction, Even if the inner leg and the inner leg are raised to the upper limit position, a relatively large fitting allowance is secured between them and the outer leg and the intermediate inner leg. No, it can stably support the top plate and the like.

請求項８記載の発明によれば、中間内脚及び内脚をストッパにより下限位置で停止させるので、下限位置において、昇降機構に天板等の荷重が直接加わることがなく、また請求項７記載の上限用ストッパと併用することにより脚体の昇降ストロークを正確に設定することができる。   According to the invention described in claim 8, since the intermediate inner leg and the inner leg are stopped at the lower limit position by the stopper, a load such as a top plate is not directly applied to the elevating mechanism at the lower limit position. By using this together with the upper limit stopper, the lifting stroke of the leg can be accurately set.

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、本発明を適用したテーブルの斜視図で、このテーブルは、左右１対の脚体(１)(１)と、それらの対向面同士を連結している前後（以下、図１の斜め右下方を前として説明する）２枚の連結板(２)(２)と、両脚体(１)の上端に高さ調節可能に支持された天板(３)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 table to which the present invention is applied. This table is a pair of left and right legs (1) and (1), and before and after connecting their opposing surfaces (hereinafter referred to as FIG. 1). There are provided two connecting plates (2) and (2), which will be described with the diagonally lower right as the front, and a top plate (3) supported on the upper ends of both legs (1) so as to be adjustable in height.

左右の脚体(１)は、図２の分解斜視図にも示すように（左右同一構造につき、一方のみ図示する）、下端の前後方向を向くベース脚(４)(４)の中央より起立する、前後方向に幅広で上下両端が開口する角筒状をなすスチール等の外脚(５)と、この外脚(５)に上下に昇降可能に内嵌される、上下両端が開口された角筒状をなすアルミニウム合金等の中間内脚(６)と、この中間内脚(６)に上下に昇降可能に内嵌される、上下両端が開口された角筒状をなすアルミニウム合金等の内脚(７)とを備え、外脚(５)、中間内脚(６)及び内脚(７)の前後両端部に形成された厚肉部(８)の上端部には、それぞれ、上下方向を向く前後１対ずつのめねじ孔(９)(９)が穿設されている。   The left and right legs (1) stand up from the center of the base legs (4) and (4) facing the front and rear direction at the lower end as shown in the exploded perspective view of FIG. The outer leg (5) is made of steel or the like that is wide in the front-rear direction and is open at both upper and lower ends, and the upper and lower ends are fitted into the outer leg (5) so as to be vertically movable. An intermediate inner leg (6) such as an aluminum alloy having a rectangular tube shape, and an aluminum alloy having an angular tube shape that is fitted in the intermediate inner leg (6) so as to be vertically movable and open at both upper and lower ends. The inner leg (7) and the upper leg of the outer leg (5), the middle inner leg (6) and the thick part (8) formed at the front and rear ends of the inner leg (7) A pair of female screw holes (9) and (9) are formed in front and rear, which face the direction.

内脚(７)の上端には、前後方向を向き、中央部に方形の有底孔(10)を有する天板支持部材(11)の中央部下面が、有底孔(10)より挿入した前後２本のボルト(12)(12)を、内脚(７)の上端のめねじ孔(９)に螺合することにより、固定されている。(13)(13)は、左右の天板支持部材(11)の対向面同士を連結している前後１対の天板支持杆である。   At the upper end of the inner leg (7), the lower surface of the center part of the top plate support member (11) having a square bottomed hole (10) in the center part is inserted through the bottomed hole (10). The two front and rear bolts (12) and (12) are fixed by screwing into the female screw holes (9) at the upper end of the inner leg (7). (13) and (13) are a pair of front and rear top plate support rods connecting the opposing surfaces of the left and right top plate support members (11).

中間内脚(６)及び内脚(７)の下端部の前後両面には、図３に拡大して示すように（内脚については同一構造につき、図示略）、外面に上下方向を向く凹凸条を有する平板状の固定スライダ(14)(14)が、それらの対向面に突設された上下２つ割れ弾性突部(15)(15)を、中間内脚(６)の前後両面に穿設された嵌合孔(16)(16)に圧嵌することにより、取付けられ、また同じく左右両側面の下端部の前後両端部には、外面が平坦面をなす前後２個ずつの固定スライダ(17)(17)が、それらの対向面に突設された弾性突部(18)を、左右両側面の嵌合孔(19)(19)に圧嵌することにより、取付けられている。   On the front and rear surfaces of the lower end of the intermediate inner leg (6) and the inner leg (7), as shown in an enlarged view in FIG. The flat fixed sliders (14), (14) with ridges have upper and lower split elastic protrusions (15), (15) projecting on their facing surfaces on both front and rear sides of the intermediate inner leg (6). It is attached by press-fitting into the drilled fitting holes (16) and (16), and fixed to the front and rear ends of the lower ends of the left and right side surfaces, two front and rear with the outer surface forming a flat surface. The sliders (17) and (17) are attached by press-fitting the elastic protrusions (18) provided on the opposing surfaces into the fitting holes (19) and (19) on both the left and right sides. .

上記各固定スライダ(14)(17)は、摩擦抵抗の小さな硬質合成樹脂、例えばポリアセタール等により形成され、かつそれらの外面は、外脚(５)及び中間内脚(６)の中空孔内において、前後左右の内面に上下に摺動可能に摺接しうるようになっている。   Each of the fixed sliders (14) and (17) is formed of a hard synthetic resin having a low frictional resistance, such as polyacetal, and the outer surfaces thereof are in the hollow holes of the outer leg (5) and the intermediate inner leg (6). The inner surface of the front, rear, left and right can be slidably contacted up and down.

中間内脚(６)及び内脚(７)の前後両面における上下方向の中央よりもやや下方寄りに形成されためねじ孔(20)（内脚については図示略）には、前後１対のボルト(21)(21)が螺着され、その頭部は、中間内脚(６)及び内脚(７)を上限位置で停止させる上限用ストッパ突部として機能する（詳細は後述する）。なお、ボルト(21)の頭部の前後寸法は、外脚(５)及び中間内脚(６)の内面と摺接しないように、固定スライダ(14)の板厚よりも若干小としてある。   Since the middle inner leg (6) and inner leg (7) are formed slightly below the center in the vertical direction on both front and rear sides, the screw hole (20) (the inner leg is not shown) has a pair of front and rear bolts. (21) (21) is screwed, and its head functions as an upper limit stopper projection for stopping the intermediate inner leg (6) and the inner leg (7) at the upper limit position (details will be described later). The front and rear dimensions of the head of the bolt (21) are slightly smaller than the plate thickness of the fixed slider (14) so as not to be in sliding contact with the inner surfaces of the outer leg (5) and the intermediate inner leg (6).

図８に示すように、外脚(５)と中間内脚(６)内の下端における前後に対向する内面には、それぞれ、中間内脚(６)と内脚(７)の前後の固定スライダ(14)(14)の下端が当接することにより、それら両脚(６)(７)を下限位置で停止させる下限用ストッパ突部(22)(22)が、内向きに突設されている。なお、このストッパ突部(22)には、固定スライダ(14)の代わりに、中間内脚(６)及び内脚(７)の下端を直接当接させてもよい。   As shown in FIG. 8, on the inner surfaces facing the front and rear at the lower ends of the outer leg (5) and the intermediate inner leg (6), fixed sliders at the front and rear of the intermediate inner leg (6) and the inner leg (7), respectively. (14) When the lower ends of (14) are brought into contact with each other, lower limit stopper protrusions (22) and (22) for stopping both the legs (6) and (7) at the lower limit position are provided inwardly. The stopper protrusion (22) may be brought into direct contact with the lower ends of the intermediate inner leg (6) and the inner leg (7) instead of the fixed slider (14).

図３及び図８に示すように、中間内脚(６)内の下端部と、ベース脚(４)(４)の下面に固着された閉塞板(23)との間には、引張りコイルばね(24)が、その下端を閉塞板(23)に設けた係止孔(25)に係止するとともに、上端を、中間内脚(６)の下部中央に挿通され、その内方の側壁のめねじ孔に先端部が螺合された左右方向を向く係止ボルト(26)の環状溝(26a)に係止することにより、中間内脚(６)を常時下向きに付勢するようにして張設されている。   As shown in FIGS. 3 and 8, a tension coil spring is provided between a lower end portion in the intermediate inner leg (6) and a closing plate (23) fixed to the lower surfaces of the base legs (4) and (4). (24) locks its lower end into a locking hole (25) provided in the closing plate (23), and its upper end is inserted into the center of the lower part of the intermediate inner leg (6). By engaging with the annular groove (26a) of the locking bolt (26) facing in the left-right direction, the tip of which is screwed into the female screw hole, the intermediate inner leg (6) is always urged downward. It is stretched.

内脚(７)の左右の側壁における下端部の中央部には、係止ボルト(26)に上方より嵌合可能な、下方に開口する長孔(27)が形成され、内脚(７)が係止ボルト(26)と干渉することなく、下限まで移動しうるようにしてある。   A long hole (27) opening downward that can be fitted to the locking bolt (26) from above is formed at the center of the lower end of the left and right side walls of the inner leg (7). Can move to the lower limit without interfering with the locking bolt (26).

図２において、(28)は、左右の脚体(１)の昇降機構で、外脚(５)よりも長寸の上下方向を向く角筒状のめねじ杆(29)と、その内部の上下方向をめねじ（図示略）に螺合された、めねじ杆(29)とほぼ等長をなすねじ軸(30)と、このねじ軸(30)の上端に取付けた箱形ケース状の回転駆動部(31)内に収容され、ねじ軸(30)と一体をなして回転する従動ベベルギヤ(32)（図８参照）と、この従動ベベルギヤ(32)と噛合する、左右方向を向く軸回りに回転する駆動ベベルギヤ(33)（図８参照）とからなる公知のねじ移動式のものよりなっている。   In FIG. 2, (28) is an elevating mechanism for the left and right legs (1), which is a rectangular tube-shaped female screw rod (29) that is longer than the outer leg (5) and faces the vertical direction, A box-shaped case attached to the upper end of the screw shaft (30) and the screw shaft (30), which is approximately the same length as the female screw 杆 (29), and is screwed into the female screw (not shown) in the vertical direction. The driven bevel gear (32) (see FIG. 8), which is housed in the rotary drive unit (31) and rotates integrally with the screw shaft (30), is meshed with the driven bevel gear (32) and faces in the left-right direction. It is a known screw-moving type comprising a drive bevel gear (33) (see FIG. 8) that rotates about an axis.

昇降機構(28)は、天板支持部材(11)の有底孔(10)の上方より、内脚(７)、中間内脚(６)及び外脚(５)の内部のやや前方寄りに嵌挿され、閉塞板(23)の上面に当接させためねじ杆(29)の下端が、閉塞板(23)の下方より挿入した止めねじ(34)により固定されている（図８参照）。この固定時において、めねじ杆(29)の上端部は、脚体(１)の所要の昇降ストロークを確保するために、外脚(５)の上端よりも若干上方に位置するようにしてある（図８参照）。   The elevating mechanism (28) is located slightly above the inside of the inner leg (7), the intermediate inner leg (6) and the outer leg (5) from above the bottomed hole (10) of the top plate support member (11). The lower end of the screw rod (29) is fixed by a set screw (34) inserted from below the closing plate (23) so as to be inserted and brought into contact with the upper surface of the closing plate (23) (see FIG. 8). . At the time of fixing, the upper end portion of the female screw rod (29) is positioned slightly above the upper end of the outer leg (5) in order to ensure the required lifting stroke of the leg body (1). (See FIG. 8).

昇降機構(28)の回転駆動部(31)は、天板支持部材(11)の有底孔(10)内に、その外側方より挿入した２本の止めねじ(35)(35)により固定されている。   The rotary drive part (31) of the lifting mechanism (28) is fixed to the bottomed hole (10) of the top plate support member (11) by two set screws (35) (35) inserted from the outside. Has been.

(36)は、左右の昇降機構(28)の駆動ベベルギヤ(33)に連結される駆動軸で、この駆動軸(36)をモータもしくは操作ハンドル（いずれも図示略）により回転させることにより、左右の昇降機構(28)のねじ軸(30)は、駆動ベベルギヤ(33)と従動ベベルギヤ(32)を介して、同期して回転させられるようになっている。
これにより、左右のねじ軸(30)は、めねじ杆(29)に対し同期して上下方向に移動し、天板(３)の高さが調節されるようになる。 (36) is a drive shaft connected to the drive bevel gear (33) of the left and right lifting mechanism (28). By rotating the drive shaft (36) by a motor or an operation handle (both not shown), The screw shaft (30) of the elevating mechanism (28) can be rotated synchronously via the drive bevel gear (33) and the driven bevel gear (32).
As a result, the left and right screw shafts (30) move in the vertical direction in synchronization with the female screw rod (29), and the height of the top plate (3) is adjusted.

外脚(５)と中間内脚(６)との上端には、図２及び図８に示すように、中間内脚(６)と内脚(７)がそれぞれ挿通され、それらの上部寄りを摺動可能に保持して案内する合成樹脂製の案内部材(37)(37)が取付けられている。   As shown in FIG. 2 and FIG. 8, the intermediate inner leg (6) and the inner leg (7) are inserted into the upper ends of the outer leg (5) and the intermediate inner leg (6), respectively, so Synthetic resin guide members (37) and (37) that are slidably held and guided are attached.

両案内部材(37)は、大きさが異なるのみで同一構造をなし、図４〜図６に示すように、上下両面が開口された、外脚(５)及び中間内脚(６)の中空孔内に嵌合可能な前後方向に長い角筒状のスリーブ(37a)と、その上端の開口縁に連設された、外脚(５)及び中間内脚(６)の上面の中空孔を除いた外周部を覆いうる水平鍔状のカバー片(37b)とを備えている。   Both guide members (37) have the same structure except for the size, and as shown in FIGS. 4 to 6, the outer leg (5) and the intermediate inner leg (6) are hollow in both upper and lower sides. A sleeve (37a) that is long in the front-rear direction that can be fitted into the hole, and a hollow hole on the upper surface of the outer leg (5) and the intermediate inner leg (6) connected to the opening edge of the upper end. And a horizontal hook-shaped cover piece (37b) that can cover the outer peripheral portion.

スリーブ(37a)の前後の外面の中央部には、上下方向を向く突条(38)が形成され、またそれと対応するスリーブ(37a)の内面には、上下方向を向く凹条(39)が形成されている。なお、スリーブ(37a)の下端は、上記ボルト(21)の頭部が当接することにより、中間内脚(６)及び内脚(７)を上限位置で停止させるストッパを兼ねている。   At the center of the outer surface of the front and rear of the sleeve (37a), a vertically extending ridge (38) is formed, and on the inner surface of the corresponding sleeve (37a), a vertically extending groove (39) is formed. Is formed. The lower end of the sleeve (37a) also serves as a stopper for stopping the intermediate inner leg (6) and the inner leg (7) at the upper limit position when the head of the bolt (21) contacts.

前後の突条(38)には、上下２個のめねじ孔(40)と、それらの間の中央部に、通孔(41)とが、内外に貫通させて穿設されている。   The front and rear ridges (38) are formed with two upper and lower female screw holes (40) and a through hole (41) penetrating inward and outward at a central portion therebetween.

スリーブ(37a)の前後の内面には、上下方向を向く平板状の可動スライダ(42)(42)が、その外面中央の上下方向を向く突条(42a)を、上記凹条(39)に内方より嵌合するとともに、突条(42a)の中央部の２つ割れ弾性突片(43)を、上記通孔(41)に嵌合することにより、内外方向に移動しうるように取付けられている。   On the inner surface of the front and rear of the sleeve (37a), a flat plate-like movable slider (42) (42) facing the up-down direction has a protrusion (42a) facing the up-down direction at the center of the outer surface to the concave line (39). Attached so that it can be moved inward and outward by fitting a split elastic protrusion (43) at the center of the ridge (42a) into the through hole (41) while fitting from the inside. It has been.

可動スライダ(42)は、摩擦抵抗の小さな硬質合成樹脂、例えばポリアセタール等により成形されている。   The movable slider (42) is formed of a hard synthetic resin having a low frictional resistance, such as polyacetal.

可動スライダ(42)の突条(42a)の上下両端部におけるスリーブ(37a)のめねじ孔(40)と対応する位置には、有底の凹孔(44)(44)が形成され、この両凹孔(44)に、上下のめねじ孔(40)に螺合した六角孔付きねじ(45)(45)の先端を突入させることにより、可動スライダ(42)を内方に押動させることができる。   A bottomed recessed hole (44) (44) is formed at a position corresponding to the female screw hole (40) of the sleeve (37a) at the upper and lower ends of the protrusion (42a) of the movable slider (42). The movable slider (42) is pushed inward by inserting the end of a hexagon socket head screw (45) (45) screwed into the upper and lower female screw holes (40) into both concave holes (44). be able to.

すなわち、図７に示すように、中間内脚(６)及び内脚(７)に案内部材(37)を嵌合したのち、ねじ(45)を締め込み、両可動スライダ(42)を内方に押動することにより、両可動スライダ(42)の内面と、中間内脚(６)及び内脚(７)の前後の外面との間の隙間や圧接力を微調整することが可能となり、これにより、中間内脚(６)及び内脚(７)の前後方向へのぐらつきを防止したり、摺動抵抗を最適なものとして、両脚(６)(７)を安定的に、かつ円滑に昇降させうるようになる。   That is, as shown in FIG. 7, after the guide member (37) is fitted to the intermediate inner leg (6) and the inner leg (7), the screw (45) is tightened to move both the movable sliders (42) inward. , The gap and pressure contact force between the inner surfaces of both movable sliders (42) and the front and rear outer surfaces of the intermediate inner leg (6) and inner leg (7) can be finely adjusted. This prevents the middle inner leg (6) and the inner leg (7) from wobbling in the front-rear direction, and makes the legs (6) (7) stable and smooth by optimizing the sliding resistance. Can be lifted and lowered.

スリーブ(37a)の左右の側片に穿設された前後２個ずつの通孔(46)(46)には、内側面が平坦面をなす円板状の固定スライダ(47)(47)が、その外側面の複数の弾性突片(47a)を、スリーブ(37a)内より通孔(46)に圧嵌することにより、取付けられている。各固定スライダ(47)の取付部の内面には、側面視下向Ｕ字状の凹部(48)が形成され、固定スライダ(47)が内方に大きく突出しないようにしてある。   In the two front and rear through holes (46) and (46) drilled in the left and right side pieces of the sleeve (37a), there are disk-shaped fixed sliders (47) and (47) whose inner surface forms a flat surface. The plurality of elastic protrusions (47a) on the outer surface are attached by press-fitting the sleeves (37a) into the through holes (46). On the inner surface of the mounting portion of each fixed slider (47), a concave portion (48) having a downward U-shape when viewed from the side is formed so that the fixed slider (47) does not protrude greatly inward.

固定スライダ(47)は、上記可動スライダ(42)と同様、摩擦抵抗の小さなポリアセタール等により形成され、４個の固定スライダ(47)の内側面に、中間内脚(６)及び内脚(７)の外側面が摺接して円滑に昇降しうるようになっている。   Similarly to the movable slider (42), the fixed slider (47) is made of polyacetal or the like having a low frictional resistance, and has an intermediate inner leg (6) and inner legs (7) on the inner surface of the four fixed sliders (47). ) Can slide up and down smoothly.

図２に示すように、中間内脚(６)及び内脚(７)を案内する上下の案内部材(37)は、そのスリーブ(37a)を両脚(６)(７)の内部に上方より嵌合したのち、カバー片(37b)の前後のテーパ状の取付孔(49)(49)に挿入した皿ねじ(50)を、両脚(６)(７)の前後の上端に設けためねじ孔(９)に螺合することにより、両脚(６)(７)の上端部に固定されている。   As shown in FIG. 2, the upper and lower guide members (37) for guiding the intermediate inner leg (6) and the inner leg (7) are fitted with sleeves (37a) inside the legs (6) and (7) from above. After joining, the countersunk screws (50) inserted in the front and rear tapered mounting holes (49, 49) of the cover piece (37b) are provided in the screw holes ( It is fixed to the upper ends of both legs (6) and (7) by screwing to 9).

次に、図８〜図１０を参照して、脚体(１)伸縮時の作用について説明する。
図８は、昇降機構(28)の非作動時、すなわち天板(３)の高さが下限に位置しているときの一部切欠縦断側面図を示すもので、この状態においては、中間内脚(６)と内脚(７)は、それぞれ引張りコイルばね(24)のばね力、及び天板(３)の荷重により、外脚(５)内において下限に位置しており、脚体(１)の上下寸法は最小となっている。 Next, with reference to FIGS. 8-10, the effect | action at the time of leg (1) expansion-contraction is demonstrated.
FIG. 8 shows a partially cutaway longitudinal side view when the elevating mechanism (28) is not operated, that is, when the height of the top plate (3) is at the lower limit. The leg (6) and the inner leg (7) are positioned at the lower limit in the outer leg (5) due to the spring force of the tension coil spring (24) and the load of the top plate (3), respectively. The vertical dimension of 1) is the smallest.

この状態において、昇降機構(28)の駆動ベベルギヤ(33)及び従動ベベルギヤ(32)が作動すると、図９に示すように、めねじ杆(29)に対し、それに螺合しているねじ軸(30)が上方に移動することにより、ねじ軸(30)の上端に固着された天板支持部材(11)、天板(３)、及び天板支持部材(11)に上端が固定された内脚(７)が、一体をなしてまず上昇する。
この際、中間内脚(６)は、引張りコイルばね(24)により下方に付勢されているので、上昇することはない。 In this state, when the drive bevel gear (33) and the driven bevel gear (32) of the elevating mechanism (28) are actuated, as shown in FIG. 30) moves upward so that the top end is fixed to the top plate support member (11), top plate (3), and top plate support member (11) fixed to the top end of the screw shaft (30). The legs (7) rise as a unit first.
At this time, since the intermediate inner leg (6) is biased downward by the tension coil spring (24), it does not rise.

内脚(７)が上限位置、すなわち、その前後両面のボルト(21)の頭部が、中間内脚(６)の上端に取付けた案内部材(37)の下端と当接する位置まで上昇すると、図１０に示すように、中間内脚(６)が、引張りコイルばね(24)を伸長させながら、内脚(７)と共に上昇し、中間内脚(６)の前後両面のボルト(21)の頭部が、外脚(５)の上端に取付けた案内部材(37)の下端と当接する上限位置で停止する。   When the inner leg (7) is raised to the upper limit position, that is, the heads of the bolts (21) on both front and rear sides thereof are in contact with the lower end of the guide member (37) attached to the upper end of the intermediate inner leg (6), As shown in FIG. 10, the intermediate inner leg (6) is lifted together with the inner leg (7) while extending the tension coil spring (24), and the bolts (21) on both front and rear sides of the intermediate inner leg (6) are lifted. The head stops at the upper limit position where it abuts the lower end of the guide member (37) attached to the upper end of the outer leg (5).

これにより、天板(３)の高さは最上位となる。
なお、図１０の状態から昇降機構(28)を逆転させ、天板(３)を下降させると、まず、引張りコイルばね(24)により下向きに付勢されている中間内脚(６)が外脚(５)内に収容され、ついで内脚(７)が中間内脚(６)内に収容される。 Thereby, the height of the top plate (3) becomes the highest.
When the elevating mechanism (28) is reversed from the state of FIG. 10 and the top plate (3) is lowered, first, the intermediate inner leg (6) urged downward by the tension coil spring (24) is first removed. The inner leg (7) is accommodated in the intermediate inner leg (6).

以上説明したように、上記実施形態の脚体の伸縮構造においては、脚体(１)は、不動の外脚(５)に内嵌された中間内脚(６)と、この中間内脚(６)に内嵌された、天板(３)支持用の内脚(７)との２段の入れ子状としているため、大きな昇降ストロークを確保することができ、天板(３)の上限の高さを大とすることができる。   As described above, in the leg stretchable structure of the above-described embodiment, the leg (1) includes the intermediate inner leg (6) fitted in the stationary outer leg (5) and the intermediate inner leg ( 6) Since it is nested in two stages with the inner leg (7) for supporting the top plate (3) fitted inside, a large lifting stroke can be secured, and the upper limit of the top plate (3) can be secured. The height can be increased.

また、第１段階では、中間内脚(６)の上昇は停止され、内脚(７)のみが上昇するようになっているため、摺動面の摺動抵抗が小さくなるとともに、脚体(１)及び天板(３)の高さをあまり高くする必要のないときには、従来のように、脚体(１)の外周面に上下２段の段差が形成されることがなく、体裁がよくなる。   Further, in the first stage, since the rise of the intermediate inner leg (6) is stopped and only the inner leg (7) is raised, the sliding resistance of the sliding surface is reduced and the leg ( 1) When there is no need to increase the height of the top plate (3), the upper and lower steps are not formed on the outer peripheral surface of the leg (1), and the appearance is improved. .

さらに、内脚(７)が一定の高さまで上昇すると、それと連動して中間内脚(６)も上昇するので、複雑な構造のねじ移動式の昇降機構を用いる必要はなく、脚体(１)を小型化（薄型化）しうるとともに、コスト低減も図れる。   Furthermore, when the inner leg (7) is raised to a certain height, the intermediate inner leg (6) is also raised in conjunction therewith, so there is no need to use a screw moving type lifting mechanism having a complicated structure, and the leg (1 ) Can be reduced in size (thinner) and cost can be reduced.

中間内脚(６)及び内脚(７)は、案内部材(37)に設けた前後位置調整可能な１対の可動スライダ(42)により、最適な圧接力及び摺動抵抗となるように調整されて昇降するので、特に、両脚(６)(７)を上限位置付近まで上昇させた際でも、脚体(１)は安定し、かつ伸縮運動が円滑となる。   The intermediate inner leg (6) and inner leg (7) are adjusted so as to have an optimum pressure contact force and sliding resistance by a pair of movable sliders (42) which can adjust the front and rear positions provided on the guide member (37). Therefore, even when the legs (6) and (7) are raised to the vicinity of the upper limit position, the leg (1) is stable and the expansion and contraction motion is smooth.

図１１及び図１２は、本発明の他の実施形態を示す。
この実施形態においては、中間内脚(６)の下端と内脚(７)との間に、中間内脚(６)を常時上方、すなわち内脚(７)に向かって付勢する引張りコイルばね(24)を設け、第１段階において、中間内脚(６)と内脚(７)とが同時に上昇し、中間内脚(６)が上限まで上昇したとき、図１２に示すように、内脚(７)による第２段階の上昇が行われるようにしてある。 11 and 12 show another embodiment of the present invention.
In this embodiment, between the lower end of the intermediate inner leg (6) and the inner leg (7), a tension coil spring that constantly biases the intermediate inner leg (6) upward, that is, toward the inner leg (7). When the intermediate inner leg (6) and the inner leg (7) are raised at the same time and the intermediate inner leg (6) is raised to the upper limit in the first stage, as shown in FIG. A second stage rise is performed by the legs (7).

なお、上限位置から下降させる際には、まず内脚(７)が下降して中間内脚(６)内に収容され、次いで、中間内脚(６)が外脚(５)に収容される。   When lowering from the upper limit position, the inner leg (7) is first lowered and accommodated in the intermediate inner leg (6), and then the intermediate inner leg (6) is accommodated in the outer leg (5). .

この実施形態においても、第１段階では、内脚(７)の中間内脚(６)に対しての上昇は停止され、中間内脚(６)のみが上昇するため、摺動面の摺動抵抗が小さくなるとともに、天板(３)の高さをあまり高くする必要のないときには、脚体(１)の外周面に上下２段の段差が形成されるのが防止される。   Also in this embodiment, in the first stage, the rise of the inner leg (7) with respect to the intermediate inner leg (6) is stopped, and only the intermediate inner leg (6) rises. When the resistance is reduced and the height of the top plate (3) does not need to be so high, it is possible to prevent the upper and lower steps from being formed on the outer peripheral surface of the leg (1).

なお、この実施形態においては、引張りコイルばね(24)の代わりに、中間内脚(６)とベース脚(４)における閉塞板(23)との間に、圧縮コイルばね等の上向付勢手段を設けてもよい。   In this embodiment, instead of the tension coil spring (24), an upward biasing force such as a compression coil spring is provided between the intermediate inner leg (6) and the closing plate (23) of the base leg (4). Means may be provided.

また、上記中間内脚(６)を常時下向きに付勢する手段は、引張りコイルばね(24)に代えて、ワイヤ等により吊り下げたおもり、又は中間内脚(６)の下端部に固定したおもり等とすることもある。   The means for constantly urging the intermediate inner leg (6) downward is fixed to a weight suspended by a wire or the like or a lower end portion of the intermediate inner leg (6) instead of the tension coil spring (24). Sometimes used as a weight.

本発明を適用したテーブルの斜視図である。It is a perspective view of the table to which this invention is applied. 同じく、一方の脚体の分解斜視図である。Similarly, it is an exploded perspective view of one leg. 中間内脚の下部の詳細を示す分解斜視図である。It is a disassembled perspective view which shows the detail of the lower part of an intermediate | middle inner leg. 案内部材の分解斜視図である。It is a disassembled perspective view of a guide member. 図４のＶ−Ｖ線拡大横断平面図である。FIG. 5 is an enlarged cross-sectional plan view taken along line VV in FIG. 4. 図５のＶI−ＶI線拡大縦断側面図である。It is the VI-VI line expansion vertical side view of FIG. 同じく、可動スライダを内方に移動させたときの拡大縦断側面図である。Similarly, it is an enlarged vertical side view when the movable slider is moved inward. 脚体が最下限位置にあるときの要部の縦断側面図である。It is a vertical side view of the principal part when a leg body exists in the lowest limit position. 同じく、内脚が上限まで上昇したときの要部の縦断側面図である。Similarly, it is a vertical side view of the main part when the inner leg is raised to the upper limit. 同じく、脚体が上限位置まで伸長したときの要部の縦断側面図である。Similarly, it is a vertical side view of the main part when the leg is extended to the upper limit position. 本発明の他の実施形態において、中間内脚と内脚とが同時に上昇したときの要部の縦断側面図である。In other embodiment of this invention, it is a vertical side view of the principal part when an intermediate | middle inner leg and an inner leg raise simultaneously. 同じく、脚体が上限位置まで伸長したときの要部の縦断側面図である。Similarly, it is a vertical side view of the main part when the leg is extended to the upper limit position.

符号の説明Explanation of symbols

(１)脚体
(２)連結板
(３)天板
(４)ベース脚
(５)外脚
(６)中間内脚
(７)内脚
(８)厚肉部
(９)めねじ孔
(10)有底孔
(11)天板支持部材
(12)ボルト
(13)天板支持杆
(14)固定スライダ
(15)弾性突部
(16)嵌合孔
(17)固定スライダ
(18)弾性突部
(19)嵌合孔
(20)めねじ孔
(21)ボルト
(22)下限用ストッパ突部
(23)閉塞板
(24)引張りコイルばね
(25)係止孔
(26)係止ボルト
(26a)環状溝
(27)長孔
(28)昇降機構
(29)めねじ杆
(30)ねじ軸
(31)回転駆動部
(32)従動ベベルギヤ
(33)駆動ベベルギヤ
(34)止めねじ
(35)止めねじ
(36)駆動軸
(37)案内部材
(37a)スリーブ
(37b)カバー片
(38)突条
(39)凹条
(40)めねじ孔
(41)通孔
(42)可動スライダ
(42a)突条
(43)弾性突部
(44)凹孔
(45)ねじ
(46)通孔
(47)固定スライダ
(47a)弾性突片
(48)凹部
(49)取付孔
(50)皿ねじ (1) Leg
(2) Connecting plate
(3) Top plate
(4) Base leg
(5) Outer legs
(6) Intermediate inner leg
(7) Inner leg
(8) Thick part
(9) Female thread hole
(10) Bottomed hole
(11) Top plate support member
(12) Bolt
(13) Top plate support
(14) Fixed slider
(15) Elastic protrusion
(16) Mating hole
(17) Fixed slider
(18) Elastic protrusion
(19) Mating hole
(20) Female thread hole
(21) Bolt
(22) Lower limit stopper protrusion
(23) Blocking plate
(24) Tension coil spring
(25) Locking hole
(26) Locking bolt
(26a) Annular groove
(27) Long hole
(28) Lifting mechanism
(29) Female thread 杆
(30) Screw shaft
(31) Rotation drive unit
(32) Driven bevel gear
(33) Drive bevel gear
(34) Set screw
(35) Set screw
(36) Drive shaft
(37) Guide member
(37a) Sleeve
(37b) Cover piece
(38) Projections
(39) Recess
(40) Female thread hole
(41) Through hole
(42) Movable slider
(42a) ridge
(43) Elastic protrusion
(44) Recessed hole
(45) Screw
(46) Through hole
(47) Fixed slider
(47a) Elastic protrusion
(48) Recess
(49) Mounting hole
(50) flat head screw

Claims (8)

上下方向を向く不動かつ筒状の外脚と、この外脚に昇降可能に内嵌された筒状の中間内脚と、この中間内脚に昇降可能に内嵌され、上端により家具の天板等を支持する内脚とにより脚体を構成し、この脚体を、脚体内に設けた昇降機構により伸縮させるようにした家具の脚体の上下伸縮構造において、
前記内脚を、前記昇降機構により昇降させうるようにするとともに、前記中間内脚を、下向付勢手段により、常時下向きに付勢し、前記内脚が所定位置まで上昇したとき、この内脚と連動して、前記中間内脚が付勢手段に抗して上昇するようにしたことを特徴とする家具の脚体の上下伸縮構造。 A stationary and cylindrical outer leg facing up and down, a cylindrical intermediate inner leg fitted inside the outer leg so that it can be raised and lowered, and an inner top leg fitted inside the middle inner leg so that it can be raised and lowered, and the top of the furniture by the upper end In the vertical extension structure of the leg of the furniture in which the leg is constituted by the inner leg that supports the leg and the leg is extended and retracted by the lifting mechanism provided in the leg,
The inner leg can be moved up and down by the elevating mechanism, and the intermediate inner leg is constantly urged downward by the downward urging means, and when the inner leg is raised to a predetermined position, A vertically extending structure for a leg of furniture, wherein the intermediate inner leg rises against the urging means in conjunction with the leg. 下向付勢手段を、外脚と中間内脚の内部に設けられ、下端が外脚の下端に、かつ上端が中間内脚に、それぞれ係止された引張りコイルばねとしてなる請求項１記載の家具の脚体の上下伸縮構造。   The downward biasing means is provided as a tension coil spring provided inside the outer leg and the intermediate inner leg, the lower end being locked to the lower end of the outer leg and the upper end being locked to the intermediate inner leg, respectively. Up-and-down elastic structure of furniture legs. 上下方向を向く不動かつ筒状の外脚と、この外脚に昇降可能に内嵌された筒状の中間内脚と、この中間内脚に昇降可能に内嵌され、上端により家具の天板等を支持する内脚とにより脚体を構成し、この脚体を、脚体内に設けた昇降機構により伸縮させるようにした家具の脚体の上下伸縮構造において、
前記内脚を、前記昇降機構により昇降させうるようにするとともに、前記中間内脚を、前記内脚に外嵌された状態で該内脚と共に上昇しうるように、上向付勢手段をもって常時上向きに付勢し、かつ中間内脚と内脚とが所定位置まで上昇したとき、ストッパ手段により中間内脚の上昇を停止し、内脚のみが上昇するようにしたことを特徴とする家具の脚体の上下伸縮構造。 A stationary and cylindrical outer leg facing up and down, a cylindrical intermediate inner leg fitted inside the outer leg so that it can be raised and lowered, and an inner top leg fitted inside the middle inner leg so that it can be raised and lowered, and the top of the furniture by the upper end In the vertical extension structure of the leg of the furniture in which the leg is constituted by the inner leg that supports the leg and the leg is extended and retracted by the lifting mechanism provided in the leg,
The inner leg can be moved up and down by the lifting mechanism, and the intermediate inner leg can be lifted together with the inner leg while being fitted on the inner leg. The furniture is characterized in that when the intermediate inner leg and the inner leg are lifted to a predetermined position, the intermediate inner leg is stopped by the stopper means and only the inner leg is raised when the intermediate inner leg and the inner leg are raised to a predetermined position. The upper and lower elastic structure of the leg. 上向付勢手段を、中間内脚と筒状とした内脚の内部に設けられ、下端が中間内脚の下端に、かつ上端が内脚の下端部に、それぞれ係止された引張りコイルばねとしてなる請求項３記載の家具の脚体の上下伸縮構造。   A tension coil spring provided with an upward biasing means inside the intermediate inner leg and a cylindrical inner leg, with the lower end locked to the lower end of the intermediate inner leg and the upper end to the lower end of the inner leg. The up-and-down elastic structure of the leg of the furniture of Claim 3. 昇降機構が、下端が外脚の下端に固着された上下方向を向くめねじ杆と、このめねじ杆に螺合され、上端の回転駆動部が内脚の上端もしくは天板等の下面に固定されたねじ軸とを備えるものとした請求項１〜４のいずれかに記載の家具の脚体の上下伸縮構造。   The elevating mechanism is screwed into the female screw く facing the vertical direction with the lower end fixed to the lower end of the outer leg, and the rotational drive part at the upper end is fixed to the upper end of the inner leg or the lower surface of the top plate, etc. The vertically extending structure of the leg of furniture according to any one of claims 1 to 4, comprising a screw shaft. 外脚の内周面と中間内脚の外周面とのいずれか一方、及び中間内脚の内周面と内脚の外周面とのいずれか一方に、それぞれ他方に摺接する摩擦抵抗の小さな合成樹脂製のスライダを設けてなる請求項１〜５のいずれかに記載の家具の脚体の上下伸縮構造。   A composite with low frictional resistance that is in sliding contact with either the inner peripheral surface of the outer leg or the outer peripheral surface of the intermediate inner leg, or the inner peripheral surface of the intermediate inner leg or the outer peripheral surface of the inner leg. The up-and-down elastic structure of the leg of furniture in any one of Claims 1-5 provided with a resin-made slider. 外脚と中間内脚との上端部内面に、それぞれストッパを内向きに設けるとともに、中間内脚と内脚における外面の上下方向の中央よりもやや下方に、それぞれ、前記ストッパと当接することにより、中間内脚及び内脚を上限位置で停止させる突部を外向きに突設してなる請求項１〜６のいずれかに記載の家具の脚体の上下伸縮構造。   A stopper is provided inwardly on the inner surfaces of the upper ends of the outer leg and the intermediate inner leg, and the stopper is brought into contact with the stopper slightly below the vertical center of the outer surface of the intermediate inner leg and the inner leg, respectively. The vertically extending structure of the leg of furniture according to any one of claims 1 to 6, wherein the intermediate inner leg and a protrusion for stopping the inner leg at the upper limit position are provided to project outward. 外脚と中間内脚との下端部内面に、中間内脚及び内脚の下端が当接することにより、それらを下限位置で停止させるストッパを内向きに突設してなる請求項１〜７のいずれかに記載の家具の脚体の上下伸縮構造。   8. The stopper according to claim 1, wherein a stopper for stopping the lower end of the intermediate inner leg and the inner leg is inwardly protruded inwardly by contacting the lower ends of the outer leg and the intermediate inner leg with the lower end portions of the inner leg. A vertically extending structure of the leg of the furniture according to any one of the above.
JP2006205761A 2006-07-28 2006-07-28 Up and down elastic structure of furniture legs Expired - Fee Related JP4832977B2 (en)

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