JP4246505B2

JP4246505B2 - Length-adjustable legs and table having the same

Info

Publication number: JP4246505B2
Application number: JP2003013921A
Authority: JP
Inventors: 一久秋葉; 健治中村
Original assignee: Okamura Corp
Current assignee: Okamura Corp
Priority date: 2003-01-22
Filing date: 2003-01-22
Publication date: 2009-04-02
Anticipated expiration: 2023-01-22
Also published as: JP2004222942A

Description

【０００１】
【発明の属する技術分野】
本発明は、長さ調節可能な脚及びそれを備えるテーブル（机も含む）に関する。
【０００２】
【従来の技術】
例えばオフィスのワークステーションに設置されるテーブルにおいては、作業内容や他のワークステーション構成要素との連係作業を円滑に行うために、脚の長さを調節可能として、テーブルの天板の高さを変更しうるようにすることが好ましい。
【０００３】
従来の長さ調節可能な脚（脚柱）としては、周壁上部に長孔を有する下支柱と、この下支柱に上下にスライド自在に挿入され、かつ周壁に上下方向を向くガイドスロットと複数のロック孔を有する上支柱と、下支柱内においてその上端縁と長孔の下端縁に係止される、ナットが固着されたボルト止め金具と、該ボルト止め金具のナットにボルトを螺合することにより、下支柱の外面に固定され、かつ上端に、上記上支柱のロック孔に選択的に係合可能なロック片を有するロック金具とを備えたものや（例えば特許文献１参照）、上記ボルト止め金具を別体とし、さらに、下支柱内においてその上端縁と長孔の下端縁に係止される支持金具を追加したものもある（例えば特許文献２参照）。
【０００４】
【特許文献１】
特開平１０−３１３９５１号公報
【特許文献２】
特開２００２−１７４５４号公報
【０００５】
【発明が解決しようとする課題】
上述した特許文献に記載されている従来の脚の長さ調節構造では、いずれも、ボルトを用いてロック金具を下支柱の外周面に固定しているため、ボルトの頭部やロック金具が外部に露出して見栄えが悪いだけでなく、長さ調節の都度、工具を用いてボルトを着脱する必要があるため、脚の長さの調節が面倒である。
また、部品点数や上下の支柱への加工工数が多いため、コスト高となる問題もある。
【０００６】
また、上述のような長さ調節可能な脚を備える机やテーブルを、ワークステーションに用いる際には、単に所望のレイアウトに自立させてワークステーションの側方に配置されるのが一般的であるため、テーブルが簡単に移動して、レイアウトが崩れる恐れがあるとともに、接床している一部の脚が作業の妨げとなることがある。
【０００７】
本発明は、上記問題点に鑑みてされたもので、ボルトやロック金具等を用いることなく、長さを簡単に調節しうるとともに、見栄えを向上させることができ、かつ部品点数や加工工数を最小限としてコスト低減が可能となり、しかも、ワークステーション等の支持体にも、安定かつ高さ変更可能に付設しうるようにした、長さ調節可能な脚及びそれを備えるテーブルを提供することを目的としている。
【０００８】
【課題を解決するための手段】
本発明の脚によると、上記課題は、次のようにして解決される。
（１）上下方向を向く筒状の外脚杆と、この外脚杆に上下移動自在に嵌合される筒状の内脚杆とを備える脚において、前記内脚杆の外周面に、複数の係合孔を、上下方向に所要の間隔をもってかつ対向状に穿設するとともに、前記内脚杆の外周面の両側面に、前記複数の係合孔に選択的に係合しうる突部を内面に備え、かつ下端に拡径フランジを有する、外周面が外脚杆の内周面に摺接可能な１対のほぼ半円筒状ストッパ片を、それらの突部を所望の係合孔に係合させて外嵌し、この両半円筒状ストッパ片と離間する上方において前記内脚杆の上端部外周面に、１対の半円筒状スライダ片の対向面を互いに突合わせて形成され、かつ外周面が外脚杆の内周面に摺接可能な筒状スライダを、両半円筒状スライダ片の内面に設けた突部を前記係合孔の上端部のものに係合させて、上下方向に移動不能に外嵌し、前記両半円筒状ストッパ片と筒状スライダとを、内脚杆と共に、前記外脚杆に下方より挿脱可能に嵌合することにより、両半円筒状ストッパ片の前記拡径フランジを、外脚杆の下端の開口縁に当接させる。
本発明のテーブルによると、上記課題は、次のようにして解決される。
【０００９】
（２）天板の前部下面に、上記(１) 項の脚の上端を固着して、その下端を接床させ、天板の前部を支持するとともに、前記天板の後部側の下面に、高さ調節可能な係止手段を有する下向きの支杆を設け、この支杆を、床上に設けたワークステーションにおける横長の支持ユニットの上部に形成された嵌合孔に嵌合するとともに、前記係止手段を、支持ユニットの上面に当接させることにより、天板の後部を前記支持ユニットに支持させる。
【００１０】
【発明の実施の形態】
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、本発明の長さ調節可能な脚を備える２台のテーブル(１)(１)を、ワークステーションの構成要素取付用の支持ユニット(２)に架設した実施形態を示す。
【００１１】
支持ユニット(２)は、図２及び図３にも示すように、左右１対の支持脚(３)(３)と、それらの上部の対向面に固着された側面視ほぼＹ字状をなす左右１対の側枠(４)と、その上端の前後部に（以下、テーブルを架設した側を前として説明する）左右両端が固着された前後１対のサイドビーム(５)(５)と、両サイドビーム(５)の対向面に前後の起立片(6a)が固着された左右方向に長い水平の受支板(６)とを備えている。
【００１２】
(７)は、上記両側枠(４)の対向面の下部中央に固着されたセンタビーム(８)に上端部が係止された前後１対（後側のものは図示略）のサイドカバー、(９)(９)は、両支持脚(３)の外側面に止着されたエンドカバーである。
【００１３】
上記受支板(６)の中央部と前後部とには、ワークステーション構成要素を支持するための多数の嵌合孔(10)が、左右方向に３列として、かつ中央列のものより前後部列のものの方の間隔を小として、等間隔おきに並べて穿設されている。
【００１４】
各嵌合孔(10)は、図４にその１個のみを拡大して示すように、円形孔の左右の開口縁に、平面視方形をなす凹入溝(10a)を対向状に設けた形状としてある。
【００１５】
図２に示すように、各テーブル(１)における天板(11)の後端部下面の左右両側部は、受支板(６)の前列の嵌合孔(10)に嵌合される左右１対のパイプ状支杆(12)の上端に固着された前方を向く支持杆(13)に固定され、また同じく天板(11)の前端部下面の左右両側部は、接床する本発明の左右１対のパイプ状脚(14)（詳細は後述する）の上端の方形をなす取付板(15)に固定されている。
【００１６】
嵌合孔(10)に嵌合される支杆(12)は、脚(14)よりも短寸とされ、その上半部の左右の外周面には、上下方向に長い長円形の複数の係合孔(16)が、上下方向に対向状に穿設されている。
【００１７】
前記各支杆(12)は、次のようにして、支持ユニット(２)の嵌合孔(10)に支持されている。
【００１８】
図２及び図３に示すように、支杆(12)の上端部外周面に、係止手段である、上端に拡径フランジ(17)を有する左右１対の半円筒状スリーブ(18a)(18a)よりなる係止スリーブ(18)を、両スリーブ片(18a)の内面に突設した上下２個の突部(19)(19)を支杆(12)の所望の係合孔(16)に選択的に係合させて外嵌する。
【００１９】
ついで、係止スリーブ(18)を、前列の所望の嵌合孔(10)に嵌合されたガイドスリーブ(20)に嵌合することにより、支杆(12)は受支板(６)上に起立状態で支持される。
【００２０】
係止スリーブ(18)の拡径フランジ(17)は、その外周部を上端において下向きに折り返すことにより、下面の内側に上向きの環状溝(21)が形成され、この環状溝(21)に、ガイドスリーブ(20)の上端に形成した上向きの環状突条(22)を嵌合することにより、両スリーブ片(18a)の相互の位置ずれやがた付きが防止されるようになっている。
【００２１】
ガイドスリーブ(20)は、その下部に設けた縮径段部(20a)を嵌合孔(10)に嵌合することにより、下方への移動が阻止されている。
【００２２】
図４に示すように、ガイドスリーブ(20)における縮径段部(20a)の左右の外周面には、受支板(６)の嵌合孔(10)の凹入溝(10a)を挿通可能な水平板状の突片(23)が形成され、それと対向するガイドスリーブ(20)の拡径下面には、突片(23)とほぼ補形をなす凹部(24)が形成されている。
【００２３】
突片(23)の上面の両側部には、下向きの傾斜面(23a)(23a)が形成されている。
【００２４】
ガイドスリーブ(20)の拡径下面と突片(23)の上面との隙間は、受支板(６)の板厚とほぼ等寸又はそれよりも若干小としてある。
【００２５】
上記両突片(23)を嵌合孔(10)の凹入溝(10a)に挿通させるようにして、ガイドスリーブ(20)の縮径段部(20a)を嵌合孔(10)に嵌合したのち、ガイドスリーブ(20)をほぼ９０°回転させることにより、該ガイドスリーブ(20)は嵌合孔(10)から外れ止めされ、それに嵌合された係止スリーブ(18)及び支杆(12)と共に、受支板(６)上に強固に支持される（図３参照）。
【００２６】
テーブル(１)の前部側の左右の脚(14)(14)は、図５に示すように、下端が開口され、かつ上端に天板(11)の下面に固定される取付板(15)が固着された金属パイプ状の外脚杆(25)と、この外脚杆(25)内に、その内周面間に所要の隙間が形成されるように上下に移動自在に嵌合され、かつ下端に接床するアジャスタ(26)が取付けられた金属パイプ状の内脚杆(27)とを備え、内脚杆(27)のやや上方寄りの中間部の左右両側面には、上下方向に長い長円形をなす複数の係合孔(28)が、左右対向状に所定間隔おきに穿設されている。この係合孔(28)のピッチは、上記支杆(12)の係合孔(16)のピッチとほぼ等しくしてある。
【００２７】
また、内脚杆(27)の上端部の左右両側面にも、上記と同形状の１個の係合孔(28)が、対向状に穿設されている。
【００２８】
内脚杆(27)における複数の係合孔(28)が列設された中間部と上端の外周面とには、それぞれ金属製の筒状ストッパ(29)と、硬質合成樹脂よりなる筒状スライダ(30)とが、外脚杆(27)の内周面と摺接するように外嵌されている。
【００２９】
筒状ストッパ(29)は、図６及び図７に示すように、左右１対の半円筒状ストッパ片(29a)(29a)の対向面を突合わせて形成され、それらの下端の外周面には、拡径フランジ(31)が、また上端部の内面中央には、上記係合孔(28)に選択的に係合可能な突部(32)が、それぞれ設けてある。
【００３０】
筒状スライダ(30)は、図８及び図９に示すように、左右１対の半円筒状スライダ片(30a)(30a)の互いの対向面を突合わせて形成され、それらの内面中央には、上記上端の係合孔(28)に係合可能な突部(33)が設けられている。
【００３１】
脚(14)を組立てるには、まず半円筒状スライダ片(30a)(30a)を、その内面の突部(33)を内脚杆(27)の上端の係合孔(28)に係合させた状態で、外脚杆(25)の下端部内に、内脚杆(27)と共に下方より嵌合する。
【００３２】
ついで、両半円筒ストッパ片(29a)の突部(32)を、内脚杆(27)中間部の所望の係合孔(28)に嵌合させた状態で、下端の拡径フランジ(31)の上面が外脚杆(25)の開口下端と当接するまで、内脚杆(27)と共に外脚杆(25)内に嵌合する。
【００３３】
これにより、外脚杆(25)と内脚杆(27)とは、互いに接近する方向への相対移動が阻止されるので、脚(14)は所望の長さに保持される。
【００３４】
突部(32)を嵌合する係合孔(28)を選択することにより、脚(14)の長さを段階的に調節することができ、テーブル(１)を、高さの異なる他の支持ユニット(２)にも架設することができる。
【００３５】
また、支持ユニット(２)に架設した状態で、天板(11)の高さを変えたいときには、脚(14)の長さと、支持ユニット(２)により支持した後部側の支杆(12)の受支板(６)よりの突出長さとを適宜に調節すればよい。
【００３６】
本発明の脚(14)は、上記ワークステーション用のテーブル(１)の外、通常の床面に自立させて配置されるテーブルや机、その他の什器等にも適用しうることは勿論である。
【００３７】
【発明の効果】
請求項１記載の発明によれば、半円筒状ストッパ片の突部を、内脚杆の係合孔に選択的に係合させるようにして、両半円筒状ストッパ片を内脚杆の外周面に嵌合し、それらと共に内脚杆を、外脚杆に下方より嵌合するだけの簡単な操作で、脚の長さを係合孔の数だけ段階的に調節することができる。
従って、従来のようなボルトやロック金具等を用いる必要はなく、それらが外部に露出しないので見栄えが向上する。
また、部品点数や脚杆への加工工数が少ないので、コスト低減が可能となる。
さらに、両半円筒状ストッパ片と離間する上方において内脚杆の上端部外周面に、１対の半円筒状スライダ片よりなる筒状スライダを、上下方向に移動不能に外嵌してあるので、外脚杆内への内脚杆の嵌合寸法が大きく、脚の長さ調節代が大きい場合でも、内脚杆の上端部は筒状スライダを介して外脚杆の内周面に摺接するため、内脚杆がぐらつく恐れがない。しかも、筒状スライダは１対の半円筒状スライダ片よりなり、かつそれらの内面に設けた突部を、内脚杆の係合孔に係合させるだけで、内脚杆の上端部に、筒状スライダを、上下方向への移動を阻止して簡単に取付けることができる。
【００３８】
請求項２記載の発明によれば、天板の後部側の下面は、それに設けた、係止手段を有する支杆が、ワークステーションの支持ユニット上部の嵌合孔により上下位置調節可能に支持されているため、テーブルが移動してワークステーションのレイアウトが崩れる恐れはなく、かつ天板の前部下面は、長さ調節可能な脚により支持されているため、他のワークステーション構成要素等の高さに対応させて、テーブルの天板の高さを適宜に調節することができる。
また、接床しているのは、前部側の長さ調節可能な脚のみであるため、天板下に広い空間が得られ、作業等の妨げとなる恐れが小さくなる。
【図面の簡単な説明】
【図１】本発明の脚、及びそれが取付けられたテーブルを、ワークステーションの支持ユニットに付設した状態の斜視図である。
【図２】同じく、テーブルの天板の支持形態を、拡大して示す要部の斜視図である。
【図３】同じく、天板の後部側に設けた支杆と、その支持部の拡大縦断側面図である。
【図４】ガイドスリーブの側面図である。
【図５】本発明の脚の一部切欠縦断側面図である。
【図６】同じく、筒状ストッパの正面図である。
【図７】図６のVII−VII線の横断平面図である。
【図８】筒状スライダの正面図である。
【図９】図８のVIII−VIII線の横断平面図である。
【符号の説明】
(１)テーブル
(２)支持ユニット
(３)支持脚
(４)側枠
(５)サイドビーム
(６)受支板
(6a)起立片
(７)サイドカバー
(８)センタビーム
(９)エンドカバー
(10)嵌合孔
(10a)凹入溝
(11)天板
(12)支杆
(13)支持杆
(14)脚
(15)取付板
(16)係合孔
(17)拡径フランジ
(18)係止スリーブ（係止手段）
(18a)半円筒状スリーブ
(19)突部
(20)ガイドスリーブ
(20a)縮径段部
(21)環状溝
(22)環状突条
(23)突片
(23a)傾斜面
(24)凹部
(25)外脚杆
(26)アジャスタ
(27)内脚杆
(28)係合孔
(29)筒状ストッパ
(29a)半円筒状ストッパ片
(30)筒状スライダ
(30a)半円筒状スライダ片
(31)拡径フランジ
(32)突部
(33)突部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a leg with adjustable length and a table (including a desk) including the leg.
[0002]
[Prior art]
For example, in a table installed at an office workstation, the length of the table top plate can be adjusted to allow the length of the legs to be adjusted in order to facilitate the work contents and linkage with other workstation components. It is preferable that it can be changed.
[0003]
Conventional length-adjustable legs (pillars) include a lower support column having a long hole in the upper part of the peripheral wall, a guide slot that is slidably inserted vertically into the lower support column, and a plurality of guide slots that face the peripheral wall in the vertical direction. An upper strut having a lock hole, a bolt fixing metal to which the upper end edge and the lower end edge of the long hole are locked in the lower support pillar, and a bolt fixed to the nut of the bolt fixing metal. And a lock fitting having a lock piece fixed to the outer surface of the lower support and having a lock piece selectively engageable with the lock hole of the upper support (for example, see Patent Document 1), the bolt There is also a structure in which a stopper is a separate body and a support bracket that is locked to the upper edge of the lower support and the lower edge of the elongated hole is added (for example, see Patent Document 2).
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 10-313951 [Patent Document 2]
Japanese Patent Laid-Open No. 2002-17454
[Problems to be solved by the invention]
In each of the conventional leg length adjustment structures described in the above-mentioned patent documents, since the lock fitting is fixed to the outer peripheral surface of the lower support using the bolt, the bolt head and the lock fitting are externally attached. In addition to being unpleasant in appearance, it is difficult to adjust the length of the legs because it is necessary to attach and detach the bolts with a tool each time the length is adjusted.
In addition, since the number of parts and the number of processing steps for the upper and lower columns are large, there is a problem that the cost is increased.
[0006]
In addition, when a desk or table having an adjustable leg as described above is used for a workstation, it is generally simply placed on the side of the workstation in a desired layout. Therefore, the table easily moves and the layout may be lost, and some of the legs in contact with the floor may interfere with the work.
[0007]
The present invention has been made in view of the above problems, and the length can be easily adjusted and the appearance can be improved without using bolts or lock fittings, and the number of parts and the number of processing steps can be reduced. To provide a leg with adjustable length and a table having the same, which can be reduced in cost as much as possible, and can be attached to a support such as a workstation in a stable and height-changeable manner. It is aimed.
[0008]
[Means for Solving the Problems]
According to the legs of the present invention, the above problem is solved as follows.
(1) In a leg including a cylindrical outer leg rod facing up and down and a cylindrical inner leg rod fitted to the outer leg rod so as to be movable up and down, The protrusions are formed so as to face each other at a predetermined interval in the vertical direction and can be selectively engaged with the plurality of engagement holes on both side surfaces of the outer peripheral surface of the inner leg collar. And a pair of substantially semi-cylindrical stopper pieces whose outer peripheral surface is slidable in contact with the inner peripheral surface of the outer leg rod , and whose protrusions are formed in desired engagement holes. The upper end portion of the inner leg collar is formed so that the opposing surfaces of the pair of semi-cylindrical slider pieces abut each other above the outer semi-cylindrical stopper pieces. In addition, a cylindrical slider whose outer peripheral surface is slidable in contact with the inner peripheral surface of the outer leg rod is engaged with the protrusion provided on the inner surfaces of both semi-cylindrical slider pieces. And engaged with those of the upper portion, externally fitted immovably in the vertical direction, said a double semi-cylindrical stopper piece and the cylindrical slider along with Uchiashi杆, removably from below into the outer Ashi杆To fit the expanded flanges of both semi-cylindrical stopper pieces to the opening edge of the lower end of the outer leg rod.
According to the table of the present invention, the above problem is solved as follows.
[0009]
(2) the front lower surface of the top plate, by fixing the upper end of the leg of the item (1), the lower end is Seyyuka, to support the front portion of the top plate, the rear side lower surface of the top plate In addition, a downward support having a locking means capable of adjusting the height is provided, and this support is fitted into a fitting hole formed in an upper portion of a horizontally long support unit in a workstation provided on the floor, The rear portion of the top plate is supported by the support unit by bringing the locking means into contact with the upper surface of the support unit.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows an embodiment in which two tables (1) (1) having adjustable length legs according to the present invention are installed on a support unit (2) for mounting components of a workstation.
[0011]
As shown in FIGS. 2 and 3, the support unit (2) is substantially Y-shaped in a side view fixed to a pair of left and right support legs (3) and (3) and the upper facing surfaces thereof. A pair of left and right side frames (4), and a pair of front and rear side beams (5) and (5) with left and right ends fixed to the front and rear portions of the upper end (hereinafter referred to as the front side of the table). A horizontal support plate (6) that is long in the left-right direction is provided with front and rear standing pieces (6a) fixed to the opposing surfaces of both side beams (5).
[0012]
(7) is a pair of front and rear side covers (the rear one is not shown) whose upper ends are locked to a center beam (8) fixed to the lower center of the opposing surface of the both side frames (4); (9) and (9) are end covers fastened to the outer surfaces of the both support legs (3).
[0013]
In the central portion and the front and rear portions of the support plate (6), there are a large number of fitting holes (10) for supporting workstation components in three rows in the left-right direction and in front of and behind the center row. The intervals between the partial rows are made smaller and are arranged at equal intervals.
[0014]
Each fitting hole (10) is provided with concave grooves (10a) having a square shape in plan view on the left and right opening edges of the circular hole as shown in FIG. 4 in an enlarged manner. As a shape.
[0015]
As shown in FIG. 2, the left and right sides of the lower surface of the rear end of the top plate (11) in each table (1) are fitted to the left and right fitting holes (10) of the support plate (6). The present invention is fixed to a forward-facing support rod (13) fixed to the upper end of a pair of pipe-shaped supports (12), and the left and right sides of the lower surface of the front end of the top plate (11) are in contact with the floor. A pair of left and right pipe-shaped legs (14) (details will be described later) are fixed to a mounting plate (15) having a square shape at the upper end.
[0016]
The support (12) to be fitted into the fitting hole (10) is shorter than the leg (14), and a plurality of oblong circles elongated in the vertical direction are formed on the left and right outer peripheral surfaces of the upper half. Engagement holes (16) are formed so as to face each other in the vertical direction.
[0017]
Each said support (12) is supported by the fitting hole (10) of the support unit (2) as follows.
[0018]
As shown in FIGS. 2 and 3, a pair of left and right semi-cylindrical sleeves (18a) having an enlarged flange (17) at the upper end, which is a locking means, on the outer peripheral surface of the upper end of the support (12). The upper and lower protrusions (19) and (19), each of which has a locking sleeve (18) made of 18a) projecting from the inner surfaces of both sleeve pieces (18a), are formed in a desired engagement hole (16 ) Is selectively engaged and externally fitted.
[0019]
Next, the support sleeve (18) is mounted on the support plate (6) by fitting the locking sleeve (18) into the guide sleeve (20) fitted in the desired fitting hole (10) in the front row. Supported in an upright state.
[0020]
The diameter-enlarging flange (17) of the locking sleeve (18) is folded downward at the outer periphery at the upper end to form an upward annular groove (21) on the inner side of the lower surface, and this annular groove (21) By fitting an upward annular ridge (22) formed at the upper end of the guide sleeve (20), mutual displacement and backlash between the sleeve pieces (18a) are prevented.
[0021]
The guide sleeve (20) is prevented from moving downward by fitting the reduced diameter step portion (20a) provided in the lower portion thereof into the fitting hole (10).
[0022]
As shown in FIG. 4, the left and right outer peripheral surfaces of the reduced diameter step portion (20a) of the guide sleeve (20) are inserted through the recessed grooves (10a) of the fitting hole (10) of the receiving plate (6). A possible horizontal plate-like projecting piece (23) is formed, and a concave portion (24) that is substantially complementary to the projecting piece (23) is formed on the lower diameter lower surface of the guide sleeve (20) facing it. .
[0023]
Downward inclined surfaces (23a) and (23a) are formed on both sides of the upper surface of the projecting piece (23).
[0024]
The gap between the diameter-expanded lower surface of the guide sleeve (20) and the upper surface of the projecting piece (23) is approximately equal to or slightly smaller than the plate thickness of the support plate (6).
[0025]
The projecting piece (23) is inserted into the recessed groove (10a) of the fitting hole (10), and the reduced diameter step portion (20a) of the guide sleeve (20) is fitted into the fitting hole (10). Then, the guide sleeve (20) is prevented from coming off from the fitting hole (10) by rotating the guide sleeve (20) by approximately 90 °, and the locking sleeve (18) fitted to the guide sleeve and the support Together with (12), it is firmly supported on the support plate (6) (see FIG. 3).
[0026]
As shown in FIG. 5, the left and right legs (14), (14) on the front side of the table (1) are open at the lower end and are attached to the lower surface of the top plate (11) at the upper end (15 ) Is fixed to the metal pipe-shaped outer leg rod (25), and the outer leg rod (25) is movably fitted up and down so that a necessary gap is formed between the inner peripheral surfaces thereof. And a metal pipe-shaped inner leg rod (27) with an adjuster (26) attached to the lower end, and the left and right sides of the middle portion of the inner leg rod (27) slightly above A plurality of engagement holes (28) having a long oval shape in the direction are formed at predetermined intervals so as to be opposed to the left and right. The pitch of the engagement holes (28) is substantially equal to the pitch of the engagement holes (16) of the support (12).
[0027]
In addition, one engagement hole (28) having the same shape as described above is also formed on the left and right side surfaces of the upper end portion of the inner leg collar (27) so as to face each other.
[0028]
A metal cylindrical stopper (29) and a cylindrical shape made of hard synthetic resin are respectively formed on the intermediate portion where the plurality of engagement holes (28) are arranged in the inner leg rod (27) and the outer peripheral surface of the upper end. The slider (30) is externally fitted so as to be in sliding contact with the inner peripheral surface of the outer leg rod (27).
[0029]
As shown in FIGS. 6 and 7, the cylindrical stopper (29) is formed by abutting the opposing surfaces of a pair of left and right semi-cylindrical stopper pieces (29a) (29a) on the outer peripheral surface of their lower ends. The diameter-enlarging flange (31) is provided at the center of the inner surface of the upper end portion, and a protrusion (32) that can be selectively engaged with the engagement hole (28).
[0030]
As shown in FIGS. 8 and 9, the cylindrical slider (30) is formed by abutting the opposing surfaces of a pair of left and right semi-cylindrical slider pieces (30a, 30a) at the center of the inner surface thereof. Is provided with a protrusion (33) engageable with the engagement hole (28) at the upper end.
[0031]
To assemble the leg (14), first engage the semi-cylindrical slider piece (30a) (30a), and the protrusion (33) on the inner surface of the leg (14) into the engagement hole (28) at the upper end of the inner leg rod (27). In this state, the lower end of the outer leg rod (25) is fitted together with the inner leg rod (27) from below.
[0032]
Next, in the state where the protrusions (32) of both semi-cylindrical stopper pieces (29a) are fitted into desired engagement holes (28) in the intermediate portion of the inner leg rod (27), the diameter-increasing flange (31 ) Is fitted together with the inner leg collar (27) in the outer leg collar (25) until the upper surface of the outer leg collar abuts the lower end of the opening of the outer leg collar (25).
[0033]
As a result, the outer leg rod (25) and the inner leg rod (27) are prevented from moving relative to each other in the direction in which they approach each other, so that the leg (14) is held at a desired length.
[0034]
By selecting the engagement hole (28) for fitting the protrusion (32), the length of the leg (14) can be adjusted in stages, and the table (1) can be adjusted to other heights. It can also be installed on the support unit (2).
[0035]
If you want to change the height of the top plate (11) while it is installed on the support unit (2), the length of the legs (14) and the rear support (12) supported by the support unit (2) What is necessary is just to adjust suitably the protrusion length from the receiving support plate (6).
[0036]
Of course, the leg (14) of the present invention can be applied to a table, a desk, other fixtures, etc. that are arranged on a normal floor surface in addition to the workstation table (1). .
[0037]
【The invention's effect】
According to the first aspect of the present invention, the projections of the semicylindrical stopper pieces are selectively engaged with the engagement holes of the inner leg rods, and both the semicylindrical stopper pieces are arranged on the outer periphery of the inner leg rods. The length of the legs can be adjusted stepwise by the number of the engagement holes by a simple operation of fitting to the surfaces and fitting the inner leg rods together with the outer leg rods from below.
Therefore, it is not necessary to use conventional bolts or lock fittings, and the appearance is improved because they are not exposed to the outside.
In addition, since the number of parts and the number of processing steps to the leg are small, the cost can be reduced.
In addition, a cylindrical slider made up of a pair of semi-cylindrical slider pieces is externally fitted on the outer peripheral surface of the upper end of the inner leg rod so as not to be movable in the vertical direction above the two semi-cylindrical stopper pieces. Even when the fitting size of the inner leg rod into the outer leg rod is large and the leg length adjustment allowance is large, the upper end of the inner leg rod is slid onto the inner peripheral surface of the outer leg rod via the cylindrical slider. There is no risk of wobbling of the inner legs due to contact. Moreover, the cylindrical slider is composed of a pair of semi-cylindrical slider pieces, and the protrusions provided on the inner surfaces thereof are simply engaged with the engagement holes of the inner leg rods, The cylindrical slider can be easily attached while preventing vertical movement.
[0038]
According to the second aspect of the present invention, the lower surface of the rear side of the top plate is supported by the support having the locking means provided thereon so that the vertical position can be adjusted by the fitting hole in the upper part of the support unit of the workstation. Therefore, there is no risk that the table will move and the layout of the workstation will be distorted, and the front lower surface of the top plate is supported by legs that can be adjusted in length. Accordingly, the height of the table top can be adjusted appropriately.
In addition, since only the legs with adjustable length on the front side are in contact with the floor, a wide space is obtained under the top plate, and the risk of hindering work and the like is reduced.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a state in which a leg of the present invention and a table to which the leg is attached are attached to a support unit of a workstation.
FIG. 2 is an enlarged perspective view of a main part, similarly showing a support form of a table top plate.
FIG. 3 is an enlarged longitudinal sectional side view of a support provided on the rear side of the top plate and a support portion thereof.
FIG. 4 is a side view of the guide sleeve.
FIG. 5 is a partially cut-away longitudinal side view of the leg of the present invention.
FIG. 6 is also a front view of a cylindrical stopper.
7 is a cross-sectional plan view taken along line VII-VII in FIG.
FIG. 8 is a front view of a cylindrical slider.
9 is a cross-sectional plan view taken along line VIII-VIII in FIG.
[Explanation of symbols]
(1) Table
(2) Support unit
(3) Support legs
(4) Side frame
(5) Side beam
(6) Supporting plate
(6a) Standing piece
(7) Side cover
(8) Center beam
(9) End cover
(10) Mating hole
(10a) Recessed groove
(11) Top plate
(12) Support
(13) Support rod
(14) Leg
(15) Mounting plate
(16) Engagement hole
(17) Expanded flange
(18) Locking sleeve (locking means)
(18a) Semi-cylindrical sleeve
(19) Projection
(20) Guide sleeve
(20a) Reduced diameter step
(21) Annular groove
(22) Annular ridge
(23) Projection
(23a) Inclined surface
(24) Recess
(25) Outer leg cage
(26) Adjuster
(27) Inner legs
(28) Engagement hole
(29) Cylindrical stopper
(29a) Semi-cylindrical stopper piece
(30) Cylindrical slider
(30a) Semi-cylindrical slider piece
(31) Expanded flange
(32) Projection
(33) Projection

Claims

In a leg comprising a cylindrical outer leg rod facing in the vertical direction and a cylindrical inner leg rod fitted to the outer leg rod so as to be movable up and down, a plurality of engagements are provided on the outer peripheral surface of the inner leg rod. Holes are formed in the vertical direction with a predetermined interval and facing each other, and protrusions that can selectively engage with the plurality of engagement holes are formed on both sides of the outer peripheral surface of the inner leg collar on the inner surface. A pair of substantially semi-cylindrical stopper pieces which have an enlarged flange at the lower end and whose outer peripheral surface is slidable in contact with the inner peripheral surface of the outer leg rod, and engage the protrusions with desired engagement holes. And is formed so that the opposing surfaces of the pair of semi-cylindrical slider pieces abut each other on the outer peripheral surface of the upper end portion of the inner leg collar above the semi-cylindrical stopper pieces. A cylindrical slider whose surface is capable of sliding contact with the inner peripheral surface of the outer leg rod, and a protrusion provided on the inner surface of both semi-cylindrical slider pieces, And engaged with those parts, externally fitted immovably in the vertical direction, said a double semi-cylindrical stopper piece and the cylindrical slider along with Uchiashi杆, fitted in detachably from below to the outer Ashi杆A leg whose length can be adjusted, wherein the enlarged flanges of both semi-cylindrical stopper pieces are brought into contact with the opening edge of the lower end of the outer leg by combining.

The upper end of the leg according to claim 1 is fixed to the front lower surface of the top plate, the lower end is brought into contact with the floor, the front portion of the top plate is supported, and the lower surface on the rear side of the top plate is A downward support having a locking means that can be adjusted is provided, and the support is fitted into a fitting hole formed in an upper portion of a horizontally long support unit in a work station provided on the floor. A table comprising a leg with adjustable length, characterized in that a means is brought into contact with the upper surface of the support unit so that the rear part of the top plate is supported by the support unit.