JP6677992B2 - Workbench and leg ends - Google Patents

Workbench and leg ends Download PDF

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JP6677992B2
JP6677992B2 JP2015190139A JP2015190139A JP6677992B2 JP 6677992 B2 JP6677992 B2 JP 6677992B2 JP 2015190139 A JP2015190139 A JP 2015190139A JP 2015190139 A JP2015190139 A JP 2015190139A JP 6677992 B2 JP6677992 B2 JP 6677992B2
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leg
protrusion
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back surface
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千田　豊治
豊治 千田
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ジー・オー・ピー株式会社
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Description

本発明は、作業台及び作業台の脚部に取り付けられる脚端具に関する。   The present invention relates to a workbench and a leg end attached to a workbench leg.

従来から、建築作業等に作業台が広く使われている。この作業台に関する技術として、特許文献１には、高さ調節が自在な脚立が開示されている。特許文献１の脚立は、天板と、天板の前方から下方に伸びる一対の前方主材と、天板の後方から下方に伸びる一対の後方主材とを備える。前方主材及び後方主材は伸縮自在に構成される。前方主材及び後方主材の下方の端部には、滑り止めとなる脚端具が取り付けられている。   2. Description of the Related Art Conventionally, work benches have been widely used for construction work and the like. As a technique relating to this worktable, Patent Literature 1 discloses a stepladder whose height can be adjusted freely. The stepladder of Patent Literature 1 includes a top plate, a pair of front main members extending downward from the front of the top plate, and a pair of rear main members extending downward from the rear of the top plate. The front main member and the rear main member are configured to be stretchable. At the lower ends of the front main member and the rear main member, leg end members serving as non-slip are attached.

実開平６−７３３００号公報Japanese Utility Model Publication No. 6-73300

しかしながら、特許文献１の脚立に取り付けられる脚端具は、作業者が脚立を階段等に置いて脚立に乗って作業すると、作業者の動きによって前方に滑ったり後方に滑ったりして、脚立が安定しないことがあった。   However, the leg end device attached to the stepladder disclosed in Patent Document 1 is such that when a worker puts the stepladder on stairs or the like and works on the stepladder, the stepladder slides forward or backward by the movement of the worker, and the stepladder is moved. It was not stable.

本発明は、上述したような問題点に鑑みてなされたものであり、作業台の安定性を向上させることができる作業台及び脚端具の提供を目的とする。   The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a work table and a leg end device capable of improving the stability of the work table.

本発明の脚端具は、作業台の脚部に取り付けられる脚端具であって、表面に前記脚部を配置でき、上方から荷重がかかった状態で裏面を前記作業台の接地面に接触させたとき、第１方向に動かすための力が、前記第１方向とは反対の方向である第２方向に動かすための力より小さい本体部を備え、前記本体部は、上部の本体主部と、前記本体主部の裏面から下方に伸びる突起部と、を備え、前記突起部は、前記本体主部の裏面において前記第１方向に対して垂直な方向の一方の端部側から他方の端部側に向かって伸びるように形成され、前記突起部は、更に、前記突起部のうち最も前記第２方向の側となる端部から、前記一方の端部側および前記他方の端部側に向かうにしたがって、前記第２方向の側となる端部が前記第１方向の側に位置するように形成されていることを特徴とする。 The leg end device of the present invention is a leg end device attached to a leg portion of a worktable, wherein the leg portion can be disposed on a front surface, and a back surface thereof comes into contact with a ground surface of the worktable under a load from above. A main body portion having a force for moving in the first direction smaller than a force for moving in the second direction opposite to the first direction, wherein the main body portion includes an upper main body main portion; And a protruding portion extending downward from the back surface of the main body main portion, wherein the protruding portion is formed on the back surface of the main body main portion from one end side in a direction perpendicular to the first direction to the other side. The protrusion is formed so as to extend toward the end, and the protrusion is further provided on the one end side and the other end side from the end of the protrusion in the side closest to the second direction. Toward the second direction, the end portion on the side in the second direction is located on the side in the first direction. Characterized in that it is formed as.

本発明の脚端具は、上方から荷重がかかった状態で他方の主面を作業台の接地面に接触させたとき、第１方向に動かすための力が、第２方向に動かすための力より小さい。よって、作業台に取り付けられる脚端具は、作業者が脚立を階段等に置いて脚立に乗って作業すると、作業者の動きによって、例えば後方となる第２方向には滑りにくくなる。したがって、本発明の脚端具が取り付けられた作業台の安定性が向上する。   The leg end device according to the present invention is characterized in that when the other main surface is brought into contact with the ground surface of the worktable in a state where a load is applied from above, the force for moving in the first direction is the force for moving in the second direction. Less than. Therefore, when the worker puts the stepladder on the stairs or the like and works on the stepladder, the leg end tool attached to the worktable is less likely to slip in the second direction, for example, rearward due to the movement of the worker. Therefore, the stability of the workbench to which the leg end device of the present invention is attached is improved.

作業台の斜視図である。It is a perspective view of a work bench. 作業台の背面図である。It is a rear view of a work bench. 脚端具の側面図である。It is a side view of a leg end tool. 脚端具の側面図の一部の拡大図である。It is a partially enlarged view of the side view of a leg end tool. 脚端具の底面図である。It is a bottom view of a leg end tool. 脚端具の背面図である。It is a rear view of a leg end tool. 脚端具の上面図である。It is a top view of a leg end tool. 脚端具の断面図である。It is sectional drawing of a leg end tool. 他の脚端具の側面図である。It is a side view of other leg end tools. 他の脚端具の底面図である。It is a bottom view of other leg end tools.

はじめに、図１Ａ及び図１Ｂを参照して、作業台１について説明する。図１Ａは、作業台１の斜視図である。図１Ｂは、作業台１の背面図である。作業台１は、図１Ａに示すように、階段２に置いて使われることを想定された作業台である。作業者は、図１Ａに示すように、階段２に作業台１を置き後述する天板１０に登って、建築作業等の各種の作業を行う。
なお、以降の説明では、便宜上、図１Ａに示す矢印Ｆｒの方向を前方、矢印Ｒｒの方向を後方、矢印Ｕｐの方向を上方、矢印Ｄｗの方向を下方と呼ぶ。また、図１Ｂに示す矢印Ｌの方向を左方、矢印Ｒの方向を右方と呼ぶ。 First, the workbench 1 will be described with reference to FIGS. 1A and 1B. FIG. 1A is a perspective view of the work table 1. FIG. 1B is a rear view of the work table 1. The work table 1 is a work table that is assumed to be placed on the stairs 2 and used as shown in FIG. 1A. As shown in FIG. 1A, the worker places the work table 1 on the stairs 2 and climbs a top plate 10 described later to perform various works such as construction work.
In the following description, for the sake of convenience, the direction of arrow Fr shown in FIG. 1A will be referred to as the front, the direction of arrow Rr as the rear, the direction of arrow Up as the upper direction, and the direction of arrow Dw as the lower direction. Also, the direction of arrow L shown in FIG. 1B is called leftward, and the direction of arrow R is called rightward.

作業台１は、天板１０と、ストッパー２０と、第１主脚３０と、第２主脚４０と、ステー５０と、脚端具１００、２００とを備える。
天板１０は、作業者が作業台１で作業するときの足場となる。天板１０は、平板状の部材であり、上方から見たとき、前後の方向に長い矩形の形状である。 The work table 1 includes a top plate 10, a stopper 20, a first main leg 30, a second main leg 40, a stay 50, and leg ends 100 and 200.
The top plate 10 serves as a scaffold when the worker works on the work table 1. The top plate 10 is a flat plate-shaped member, and has a rectangular shape that is long in the front-back direction when viewed from above.

ストッパー２０は、天板１０の後方に配置され、作業者が天板１０に乗って作業しているときに、作業者が作業台１の後方に転落することを防止するための柵となる。ストッパー２０は、一対のストッパー支柱２１と、ストッパー桟２２とを備える。
一方のストッパー支柱２１は、天板１０の後方であって天板１０の左側の端部から上方に伸びるように配置される。他方のストッパー支柱２１は、天板１０の後方であって天板１０の右側の端部から上方に伸びるように配置される。ストッパー桟２２は、一対のストッパー支柱２１の上方の端部同士を繋ぐ棒状の部材である。ストッパー桟２２によって、作業者が天板１０から作業台１の後方に転落することが防止される。
ストッパー２０は、畳むことが可能である。一対のストッパー支柱２１は、天板１０との接続部を中心に、天板１０の上側の面とほぼ平行になる位置まで回転できる。一対のストッパー支柱２１が天板１０の上側の面とほぼ平行になる位置まで動かされると、ストッパー桟２２は天板１０に近づいて対向する位置に移動し、ストッパー２０が畳まれた状態になる。 The stopper 20 is arranged behind the top board 10 and serves as a fence for preventing the worker from falling behind the work table 1 when the worker is working on the top board 10. The stopper 20 includes a pair of stopper columns 21 and a stopper bar 22.
One stopper support 21 is arranged to extend upward from the left end of the top plate 10 behind the top plate 10. The other stopper support 21 is disposed to extend upward from the right end of the top plate 10 behind the top plate 10. The stopper bar 22 is a rod-shaped member that connects upper ends of the pair of stopper columns 21. The stopper bar 22 prevents the worker from falling from the top 10 to the rear of the work table 1.
The stopper 20 is foldable. The pair of stopper posts 21 can rotate around a connection portion with the top plate 10 to a position substantially parallel to the upper surface of the top plate 10. When the pair of stopper posts 21 is moved to a position substantially parallel to the upper surface of the top plate 10, the stopper bar 22 moves closer to the top plate 10 and moves to a position facing the top plate 10, and the stopper 20 is folded. .

第１主脚３０及び第２主脚４０は、それぞれ、天板１０の後方及び前方を支える部材である。第１主脚３０及び第２主脚４０によって、天板１０が水平な状態に配置される。第１主脚３０及び第２主脚４０は、長さの調整が可能であり、階段２の段差の高さなどに応じた適切な長さに設定できる。   The first main leg 30 and the second main leg 40 are members that support the rear and front of the top plate 10, respectively. The top plate 10 is arranged in a horizontal state by the first main leg 30 and the second main leg 40. The length of the first main leg 30 and the second main leg 40 can be adjusted, and can be set to an appropriate length according to the height of the step of the stairs 2 and the like.

第１主脚３０は、一対の脚部３１と主脚桟３４Ａ、Ｂとを備える。
一対の脚部３１は、それぞれ、上側の端部が天板１０の後方の端部に接続し、下側の端部が作業台１の接地面まで伸びる棒状の部材である。脚部３１の一方は天板１０の右側の端部に接続し、脚部３１の他方は天板１０の左側の端部に接続する。一対の脚部３１は、図１Ｂに示すとおり、天板１０から作業台１の接地面に進むにつれて、互いの距離が広がるように配置される。 The first main leg 30 includes a pair of leg portions 31 and main leg bars 34A and 34B.
Each of the pair of legs 31 is a rod-shaped member whose upper end is connected to the rear end of the top plate 10 and whose lower end extends to the ground surface of the worktable 1. One of the legs 31 is connected to the right end of the top 10, and the other of the legs 31 is connected to the left end of the top 10. As shown in FIG. 1B, the pair of legs 31 are arranged so that the distance between the legs 31 increases from the top 10 to the ground surface of the worktable 1.

一対の脚部３１のそれぞれは、支柱脚３２と延長脚３３とを備える。支柱脚３２は、脚部３１の上部を構成する棒状の部材であり、中空である。支柱脚３２の上側の端部が天板１０に接続する。延長脚３３は、支柱脚３２の下側の端部から支柱脚３２に沿って下方に伸びる棒状の部材である。延長脚３３の上部は、中空である支柱脚３２の内部に入り込んで固定されている。支柱脚３２の内部に入り込む延長脚３３の長さは調整可能であり、支柱脚３２の内部に入り込む延長脚３３の長さを調整することで、脚部３１全体の長さを調整できる。
主脚桟３４Ａ、Ｂは、一対の支柱脚３２を接続する棒状の部材であり、第１主脚３０の強度を向上させる。主脚桟３４Ａは、一対の支柱脚３２の中央よりやや上方で一対の支柱脚３２を接続する。主脚桟３４Ｂは、一対の支柱脚３２の下方で一対の支柱脚３２を接続する。 Each of the pair of legs 31 includes a column leg 32 and an extension leg 33. The support leg 32 is a rod-shaped member that forms the upper part of the leg 31 and is hollow. The upper end of the support leg 32 is connected to the top plate 10. The extension leg 33 is a rod-shaped member that extends downward along the column leg 32 from the lower end of the column leg 32. The upper part of the extension leg 33 is fixed by penetrating into the hollow column leg 32. The length of the extension leg 33 that enters the inside of the support leg 32 is adjustable, and by adjusting the length of the extension leg 33 that enters the interior of the support leg 32, the entire length of the leg 31 can be adjusted.
The main leg bars 34A, 34B are rod-shaped members connecting the pair of column legs 32, and improve the strength of the first main leg 30. The main leg crosspiece 34A connects the pair of column legs 32 slightly above the center of the pair of column legs 32. The main leg bar 34B connects the pair of column legs 32 below the pair of column legs 32.

第２主脚４０は、一対の脚部４１と主脚桟４４Ａ、Ｂとを備える。
一対の脚部４１は、それぞれ、上側の端部が天板１０の前側の端部に接続し、下側の端部が作業台１の接地面まで伸びる棒状の部材である。脚部４１の一方は天板１０の右側の端部に接続し、脚部４１の他方は天板１０の左側の端部に接続する。一対の脚部４１は、天板１０から作業台１の接地面に進むにつれて、互いの距離が広がるように配置される。
脚部４１のそれぞれは、第１主脚３０の脚部３１と同様に、支柱脚４２と延長脚４３とを備える。支柱脚４２及び延長脚４３は、それぞれ第１主脚３０の支柱脚３２及び延長脚３３と同様の構成であり、詳しい説明を省略する。 The second main leg 40 includes a pair of legs 41 and main leg bars 44A and 44B.
Each of the pair of legs 41 is a rod-shaped member whose upper end is connected to the front end of the top plate 10 and whose lower end extends to the ground surface of the worktable 1. One of the legs 41 is connected to the right end of the top 10, and the other of the legs 41 is connected to the left end of the top 10. The pair of leg portions 41 are arranged so that the distance between the pair of leg portions 41 increases from the top plate 10 to the ground surface of the worktable 1.
Each of the legs 41 includes a column leg 42 and an extension leg 43, similarly to the legs 31 of the first main leg 30. The strut leg 42 and the extension leg 43 have the same configuration as the strut leg 32 and the extension leg 33 of the first main leg 30, respectively, and a detailed description thereof will be omitted.

主脚桟４４Ａ、Ｂは、一対の支柱脚４２を接続する棒状の部材であり、第２主脚４０の強度を向上させる。また、主脚桟４４Ａ、Ｂは、作業者が天板１０に登るときの踏み場となる。主脚桟４４Ａは、一対の支柱脚４２の中央よりやや上方で一対の支柱脚４２を接続する。主脚桟４４Ｂは、一対の支柱脚４２の下方で一対の支柱脚４２を接続する。
第１主脚３０の長さは、図１Ａに示すとおり、第２主脚４０より長くなっており、作業台１を階段２に置くとき、第１主脚３０を階段２の後方に配置し、第２主脚４０を階段２の前方に配置するのに適した形状となる。 The main leg bars 44 </ b> A and 44 </ b> B are rod-shaped members that connect the pair of column legs 42 and improve the strength of the second main leg 40. The main leg bars 44A and 44B serve as a stepping surface when the worker climbs the top board 10. The main leg bar 44A connects the pair of column legs 42 slightly above the center of the pair of column legs 42. The main leg bar 44B connects the pair of column legs 42 below the pair of column legs 42.
1A, the length of the first main leg 30 is longer than that of the second main leg 40. When the work table 1 is placed on the stairs 2, the first main leg 30 is arranged behind the stairs 2. , The second main leg 40 is arranged in front of the stairs 2.

第１主脚３０及び第２主脚４０は、畳むことが可能である。第１主脚３０及び第２主脚４０を畳むには、まず、第１主脚３０の一対の脚部３１のそれぞれを最短の長さにし、第２主脚４０の一対の脚部４１のそれぞれを最短の長さにする。次に、第２主脚４０を、第２主脚４０の天板１０との接続部を中心に、第２主脚４０の主脚桟４４Ａ、Ｂが天板１０の下側の面に近づくように回転させる。次に、第１主脚３０を、第１主脚３０の天板１０との接続部を中心に、第１主脚３０の主脚桟３４Ａ、Ｂが天板１０の下側の面に近づくように回転させる。こうして、第１主脚３０及び第２主脚４０が畳まれた状態になる。   The first main leg 30 and the second main leg 40 can be folded. To fold the first main leg 30 and the second main leg 40, first, each of the pair of legs 31 of the first main leg 30 is set to the shortest length, and the pair of legs 41 of the second main leg 40 is Make each one the shortest length. Next, the main leg bars 44A and 44B of the second main leg 40 approach the lower surface of the top plate 10 with the second main leg 40 connected to the top plate 10 at the center. Rotate as shown. Next, the main legs 30A and 34B of the first main leg 30 approach the lower surface of the top plate 10 with the first main leg 30 at the center of the connection between the first main leg 30 and the top plate 10. Rotate as shown. Thus, the first main leg 30 and the second main leg 40 are in a folded state.

ステー５０は、天板１０の下側の面の前後方向の中央部と、第１主脚３０の支柱脚３２とを接続して、天板１０と第１主脚３０との角度を所定の角度にして、作業台１を補強する。
なお、天板１０、ストッパー２０、第１主脚３０、第２主脚４０及びステー５０は、主としてアルミ合金で形成される。ただし、ステンレス等の他の材料を用いてもよい。 The stay 50 connects the center part of the lower surface of the top plate 10 in the front-rear direction and the support leg 32 of the first main leg 30 to set the angle between the top plate 10 and the first main leg 30 to a predetermined angle. At an angle, the work table 1 is reinforced.
The top plate 10, the stopper 20, the first main leg 30, the second main leg 40, and the stay 50 are mainly formed of an aluminum alloy. However, another material such as stainless steel may be used.

脚端具１００及び脚端具２００は、それぞれ、第１主脚３０の脚部３１の下端、第２主脚４０の脚部４１の下端に取り付けられ、作業台１が接地面に対して滑らないようにする。
第１主脚３０の右側の脚部３１には、脚端具１００Ａが取り付けられ、左側の脚部３１には、脚端具１００Ｂが取り付けられている。
第２主脚４０の右側の脚部４１には、脚端具２００Ａが取り付けられ、左側の脚部４１には、脚端具２００Ｂが取り付けられている。
脚端具１００及び脚端具２００は、それぞれ、軟質塩化ビニールで一体的に形成される。ただし、ゴムや合成樹脂等の弾性のある他の材料を用いてもよい。 The leg end device 100 and the leg end device 200 are attached to the lower end of the leg 31 of the first main leg 30 and the lower end of the leg 41 of the second main leg 40, respectively. Not to be.
A leg terminal 100A is attached to the right leg 31 of the first main leg 30, and a leg terminal 100B is attached to the left leg 31.
The leg end 200A is attached to the right leg 41 of the second main leg 40, and the leg end 200B is attached to the left leg 41.
The leg end device 100 and the leg end device 200 are each integrally formed of soft vinyl chloride. However, another elastic material such as rubber or synthetic resin may be used.

次に、図２Ａ〜図２Ｆを参照して、脚端具１００Ａについて説明する。図２Ａは、脚端具１００Ａの側面図である。図２Ｂは、図２Ａの第１突起部１２２の一部の拡大図である。図２Ｃは、脚端具１００Ａの底面図である。図２Ｄは、脚端具１００Ａの背面図、すなわち、脚端具１００Ａを図２Ａの矢印Ａの方向から見た図である。図２Ｅは、脚端具１００Ａの上面図である。図２Ｆは、脚端具１００Ａの、図２ＣにおけるＢ−Ｂ断面図である。なお、脚端具１００Ａの第１方向Ｄ１は、図１Ａに示す作業台１の前方に一致し、第１方向Ｄ１の反対方向である第２方向Ｄ２は、図１Ａに示す作業台１の後方に一致する。   Next, the leg end tool 100A will be described with reference to FIGS. 2A to 2F. FIG. 2A is a side view of the leg end device 100A. FIG. 2B is an enlarged view of a part of the first protrusion 122 of FIG. 2A. FIG. 2C is a bottom view of the leg end device 100A. FIG. 2D is a rear view of the leg end device 100A, that is, a diagram of the leg end device 100A viewed from the direction of arrow A in FIG. 2A. FIG. 2E is a top view of the leg end device 100A. FIG. 2F is a cross-sectional view of leg end device 100A taken along line BB in FIG. 2C. The first direction D1 of the leg end tool 100A coincides with the front of the work table 1 shown in FIG. 1A, and the second direction D2 opposite to the first direction D1 is behind the work table 1 shown in FIG. 1A. Matches.

脚端具１００Ａは、嵌め込み部１１０と、本体部１２０とを備える。
はじめに本体部１２０について説明する。本体部１２０は、下側の主面である裏面１２０Ｂが作業台１の接地面に接触する。なお、本体部１２０の裏面１２０Ｂは、図２Ａに示すとおり、後述する第１突起部１２２、第２突起部１２３及び第３突起部１２４の下端部を通る面である。また、本体部１２０の上側の主面である表面１２０Ａには、第１主脚３０の脚部３１を取り付けることができる。この取り付けについての詳細は後述する。
本体部１２０には、図２Ｃ及び図２Ｅに示すように、水抜き孔１２６が設けられる。水抜き孔１２６は、本体部１２０を貫通する貫通孔であり、後述する嵌め込み部１１０の内部に水がたまらないようにするための孔である。 The leg end device 100A includes a fitting portion 110 and a main body portion 120.
First, the main body 120 will be described. The back surface 120 </ b> B, which is the lower main surface of the main body 120, contacts the ground surface of the worktable 1. In addition, as shown in FIG. 2A, the back surface 120B of the main body 120 is a surface passing through lower end portions of a first protrusion 122, a second protrusion 123, and a third protrusion 124 described later. The leg 31 of the first main leg 30 can be attached to the upper surface 120A, which is the upper main surface of the main body 120. Details of this attachment will be described later.
As shown in FIGS. 2C and 2E, the main body 120 is provided with a drain hole 126. The drain hole 126 is a through hole that penetrates through the main body 120, and is a hole for preventing water from collecting inside the fitting portion 110 described later.

本体部１２０は、図２Ａに示すとおり、本体主部１２１と、第１突起部１２２と、第２突起部１２３と、第３突起部１２４とを備える。
本体主部１２１は、板状であり、本体部１２０の上側に位置し、本体主部１２１の上側の主面は、上記の表面１２０Ａとなる。本体主部１２１は、図２Ａに示すように第２方向Ｄ２に向かうにつれて高さが高くなるため、表面１２０Ａは、本体主部１２１の裏面１２１Ａに対して傾斜する。表面１２０Ａは、この傾斜により、図１Ａに示す脚部３１の下側の端部の面と平行になるため、脚部３１を安定して表面１２０Ａに配置できる。
本体主部１２１は、図２Ｅ及び図２Ｆに示すとおり、表面１２０Ａに凹部１２８を備える。また、本体主部１２１は、図２Ｃに示すとおり、裏面１２１Ａにおける２つの第３突起部１２３Ａ、１２３Ｂとの間に凹部１２５を備える。また、本体主部１２１は、図２Ｃに示すとおり、裏面１２１Ａにおける第１突起部１２２と第３突起部１２３Ａとの間に凹部１２９を備える。これらの凹部１２５、１２８、１２９により、脚端具１００Ａが厚肉になることを防止して、例えば軟質塩化ビニールを用いた射出成形をするときにヒケが発生することを防ぐ。 2A, the main body 120 includes a main body 121, a first protrusion 122, a second protrusion 123, and a third protrusion 124.
The main body part 121 is plate-shaped and located above the main body part 120, and the upper main surface of the main body part 121 is the above-described surface 120A. As shown in FIG. 2A, the height of main body main portion 121 increases in the second direction D2, and thus front surface 120A is inclined with respect to rear surface 121A of main body main portion 121. Due to this inclination, the surface 120A becomes parallel to the lower end surface of the leg 31 shown in FIG. 1A, so that the leg 31 can be stably disposed on the surface 120A.
As shown in FIGS. 2E and 2F, the main body main portion 121 includes a recess 128 on the surface 120A. Further, as shown in FIG. 2C, the main body main portion 121 includes a recess 125 between the two third protrusions 123A and 123B on the back surface 121A. Further, as shown in FIG. 2C, the main body main portion 121 includes a concave portion 129 between the first protrusion 122 and the third protrusion 123A on the back surface 121A. These recesses 125, 128, and 129 prevent the leg end tool 100A from becoming thicker, and prevent sinks from occurring during injection molding using, for example, soft vinyl chloride.

次に、第１突起部１２２について説明する。第１突起部１２２は、図２Ａに示すとおり、本体主部１２１の裏面１２１Ａから、斜め後方、すなわち、下方かつ第２方向Ｄ２に伸びるように形成される。第１突起部１２２の下側の先端の断面は半円状の形状となる。また、第１突起部１２２は６個並んで配置される。   Next, the first protrusion 122 will be described. As shown in FIG. 2A, the first protrusion 122 is formed to extend obliquely rearward, that is, downward and in the second direction D2, from the back surface 121A of the main body 121. The cross section of the lower end of the first protrusion 122 has a semicircular shape. Also, six first protrusions 122 are arranged side by side.

第１突起部１２２の断面形状は、どの部分の断面であっても略同形状となる。そこで、第１突起部１２２の断面形状として、図２Ｂに示される第１突起部１２２の側面の形状を説明する。
第１突起部１２２の第１方向Ｄ１の側の面と、第１突起部１２２の第２方向Ｄ２の側の面とは、平行になっておらず、下方に向かうにつれて互いに近づくように形成される。
ここで、図２Ｂに示すように、第１突起部１２２の第１方向Ｄ１の側の面と、本体部１２０の裏面１２０Ｂとのなす第１方向Ｄ１の側の角度を角度αとする。また、第１突起部１２２の第２方向Ｄ２の側の面と、本体部１２０の裏面１２０Ｂとのなす第２方向Ｄ２の側の角度を角度βとする。このとき、第１突起部１２２は、角度αが角度βより小さくなるように形成される。
なお、第１突起部１２２は、上述のように、本体主部１２１の裏面１２１Ａから、斜め後方に伸びるように形成される。第１突起部１２２が斜め後方に伸びるとは、第１突起部１２２の断面図における中心線Ｃ（図２Ａ参照）が、斜め後方に伸びることを表す。中心線Ｃは、第１突起部１２２の断面図を考えたとき、第１突起部１２２の第１方向Ｄ１の側の端部の任意の点と、この点と同じ高さにある第１突起部１２２の第２方向Ｄ２の側の端部の点と、の中間点からなる線である。斜め後方に伸びることの意味は、後述する第２突起部１２３及び第３突起部１２４でも、同様である。 The cross-sectional shape of the first protrusion 122 is substantially the same regardless of the cross-section of any part. Therefore, as the cross-sectional shape of the first protrusion 122, the shape of the side surface of the first protrusion 122 shown in FIG. 2B will be described.
The surface of the first protrusion 122 on the side in the first direction D1 and the surface of the first protrusion 122 on the side of the second direction D2 are not parallel, and are formed so as to approach each other downward. You.
Here, as shown in FIG. 2B, the angle in the first direction D1 between the surface of the first protrusion 122 in the first direction D1 and the back surface 120B of the main body 120 is defined as an angle α. The angle between the surface of the first protrusion 122 in the second direction D2 and the back surface 120B of the main body 120 in the second direction D2 is defined as an angle β. At this time, the first protrusion 122 is formed such that the angle α is smaller than the angle β.
The first protrusion 122 is formed to extend obliquely rearward from the back surface 121A of the main body 121 as described above. The expression that the first protrusion 122 extends obliquely rearward means that the center line C (see FIG. 2A) in the cross-sectional view of the first protrusion 122 extends obliquely rearward. When considering the cross-sectional view of the first protrusion 122, the center line C is an arbitrary point at the end of the first protrusion 122 on the first direction D1 side and the first protrusion at the same height as this point. This is a line formed by an intermediate point between a point at an end of the portion 122 on the second direction D2 side. The meaning of extending obliquely backward is the same for the second protrusion 123 and the third protrusion 124 described later.

次に、図２Ｃを参照して、本体主部１２１の裏面１２１Ａでの平面視における第１突起部１２２の形状を説明する。第１突起部１２２は、本体主部１２１の裏面１２１Ａにおいて、第１方向Ｄ１に垂直な方向の一方の端部から、他方の端部まで伸びるように形成される。
第１突起部１２２は、図２Ｃに示すとおり、２つの円弧状領域Ｒ１、Ｒ２を備える。第１突起部１２２は、円弧状領域Ｒ１、Ｒ２のそれぞれで、第２方向Ｄ２に凸となる円弧状の形状となる。ここで、第１突起部１２２の円弧状領域Ｒ１に含まれて最も第２方向Ｄ２の側となる部分を端部Ｐ１とする。すると、複数の第１突起部１２２それぞれの端部Ｐ１は、直線Ｌ１を通る。同様に、第１突起部１２２の円弧状領域Ｒ２に含まれて最も第２方向Ｄ２の側となる部分を端部Ｐ２とする。すると、複数の第１突起部１２２それぞれの端部Ｐ２は、直線Ｌ２を通る。 Next, with reference to FIG. 2C, the shape of the first protrusion 122 in plan view on the back surface 121A of the main body 121 will be described. The first protrusion 122 is formed on the back surface 121A of the main body 121 so as to extend from one end in a direction perpendicular to the first direction D1 to the other end.
As shown in FIG. 2C, the first protrusion 122 includes two arc-shaped regions R1 and R2. The first protrusion 122 has an arc shape that is convex in the second direction D2 in each of the arc regions R1 and R2. Here, a portion included in the arc-shaped region R1 of the first protrusion 122 and located closest to the second direction D2 is referred to as an end P1. Then, each end P1 of the plurality of first protrusions 122 passes through the straight line L1. Similarly, a part included in the arc-shaped region R2 of the first protrusion 122 and located closest to the second direction D2 is defined as an end P2. Then, each end P2 of the plurality of first protrusions 122 passes through the straight line L2.

ここで、直線Ｌ１及び直線Ｌ２と、第１主脚３０の延長脚３３との関係を説明する。延長脚３３は、外形が四角柱状であり、内部は空洞になっている。延長脚３３の外形を形成する４つの面となる部分を延長脚壁３３Ａ〜Ｄとする。延長脚壁３３Ａ及び延長脚壁３３Ｃは、互いに対向し、延長脚３３の断面図では作業台１の前後方向に伸びる。また、延長脚壁３３Ｂ及び延長脚壁３３Ｄは、互いに対向し、延長脚３３の断面図では作業台１の左右方向に伸びる。
この延長脚３３を、本体主部１２１の裏面１２１Ａから見たときの配置を図２Ｃに示す。図２Ｃに示すとおり、本体主部１２１の裏面１２１Ａでの平面視において、延長脚３３の延長脚壁３３Ａは直線Ｌ１に重なり、延長脚壁３３Ｃは直線Ｌ２に重なる。すなわち、延長脚３３の延長脚壁３３Ａは第１突起部１２２の端部Ｐ１に重なり、延長脚３３の延長脚壁３３Ｃは第１突起部１２２の端部Ｐ２に重なる。 Here, the relationship between the straight lines L1 and L2 and the extended legs 33 of the first main leg 30 will be described. The external shape of the extension leg 33 is a quadrangular prism shape, and the inside is hollow. The four legs forming the outer shape of the extension leg 33 are referred to as extension leg walls 33A to 33D. The extension leg wall 33A and the extension leg wall 33C face each other, and extend in the front-rear direction of the work table 1 in a cross-sectional view of the extension leg 33. The extension leg wall 33B and the extension leg wall 33D face each other, and extend in the left-right direction of the work table 1 in a cross-sectional view of the extension leg 33.
FIG. 2C shows an arrangement of the extension legs 33 when viewed from the back surface 121A of the main body portion 121. As shown in FIG. 2C, in plan view on the back surface 121A of the main body 121, the extension leg wall 33A of the extension leg 33 overlaps the straight line L1, and the extension leg wall 33C overlaps the straight line L2. That is, the extension leg wall 33A of the extension leg 33 overlaps the end P1 of the first projection 122, and the extension leg wall 33C of the extension leg 33 overlaps the end P2 of the first projection 122.

次に、第２突起部１２３について説明する。第２突起部１２３は、図２Ａに示すとおり、本体主部１２１の裏面１２１Ａから、斜め後方に伸びるように形成される。第２突起部１２３の下側の先端の断面は半円状の形状となる。また、第２突起部１２３の第１方向Ｄ１の側の面と、第１突起部１２２の第２方向Ｄ２の側の面とは、図２Ｆに示すとおり、略平行になる。また、第２突起部１２３は、図２Ｃに示すとおり、本体主部１２１の裏面１２１Ａにおいて、第１方向Ｄ１に垂直な方向の一方の端部から、他方の端部まで直線状に伸びるように形成される。第２突起部１２３は２個あり、凹部１２５の第１方向Ｄ１の側に第２突起部１２３Ａが配置され、凹部１２５の第２方向Ｄ２の側に第２突起部１２３Ｂが配置される。第２突起部１２３Ｂは、本体主部１２１の後端（第２方向Ｄ２側の端部）に配置される。   Next, the second protrusion 123 will be described. The second protrusion 123 is formed to extend obliquely rearward from the rear surface 121A of the main body 121 as shown in FIG. 2A. The cross section of the lower end of the second projection 123 has a semicircular shape. The surface of the second protrusion 123 on the side in the first direction D1 and the surface of the first protrusion 122 on the side of the second direction D2 are substantially parallel as shown in FIG. 2F. In addition, as shown in FIG. 2C, the second protrusion 123 extends linearly from one end in a direction perpendicular to the first direction D1 to the other end on the back surface 121A of the main body 121. It is formed. There are two second protrusions 123, the second protrusion 123A is arranged on the side of the recess 125 in the first direction D1, and the second protrusion 123B is arranged on the side of the recess 125 in the second direction D2. The second protrusion 123B is disposed at a rear end (an end on the second direction D2 side) of the main body main portion 121.

次に、第３突起部１２４について説明する。第２突起部１２３は、図２Ａに示すとおり、本体主部１２１の裏面１２１Ａから、斜め後方に伸びるように形成される。第２突起部１２３の下側の先端の断面は半円状の形状となる。第３突起部１２４は、第１突起部１２２の第１方向Ｄ１の側であって、本体主部１２１の先端（第１方向Ｄ１側の端部）に１個配置される。また、第３突起部１２４の第１方向Ｄ１の側の面と、第１突起部１２２の第２方向Ｄ２の側の面とは、図２Ａ及び図２Ｆに示すとおり、略平行になる。また、第２突起部１２３は、図２Ｃに示すとおり、本体主部１２１の裏面１２１Ａにおいて、第１方向Ｄ１に垂直な方向の一方の端部から、他方の端部まで伸びるように形成される。第３突起部１２４の第１方向Ｄ１の側は、図２Ｃに示すとおり、直線状となる。また、第３突起部１２４の第２方向Ｄ２の側は、図２Ｃに示すとおり、第１突起部１２２と同様に、円弧状となる。   Next, the third protrusion 124 will be described. The second protrusion 123 is formed to extend obliquely rearward from the rear surface 121A of the main body 121 as shown in FIG. 2A. The cross section of the lower end of the second projection 123 has a semicircular shape. One third protruding portion 124 is arranged on the side of the first protruding portion 122 in the first direction D1 and at the tip of the main body main portion 121 (the end portion on the first direction D1 side). The surface of the third protrusion 124 on the first direction D1 side and the surface of the first protrusion 122 on the second direction D2 side are substantially parallel as shown in FIGS. 2A and 2F. Further, as shown in FIG. 2C, the second protrusion 123 is formed to extend from one end in the direction perpendicular to the first direction D1 to the other end on the back surface 121A of the main body 121. . The side of the third projection 124 in the first direction D1 is linear as shown in FIG. 2C. As shown in FIG. 2C, the side of the third protrusion 124 in the second direction D2 has an arc shape, like the first protrusion 122.

次に、脚端具１００Ａの嵌め込み部１１０について説明する。嵌め込み部１１０は、第１主脚３０の延長脚３３が嵌め込まれて固定されることで、第１主脚３０の延長脚３３に脚端具１００を取り付けるための部材である。
嵌め込み部１１０は、図２Ａ及び図２Ｆに示すとおり、本体部１２０の表面１２０Ａに配置され、本体部１２０の表面１２０Ａから、斜め前方、すなわち、上方かつ第１方向Ｄ１に伸びる柱状の形状である。嵌め込み部１１０の上部は開口しており、この開口部分から第１主脚３０の延長脚３３が嵌め込まれる。嵌め込み部１１０が斜め前方に伸びることで、図１Ａに示すように、前方に傾く脚部３１が嵌め込み部１１０に嵌め込まれたとき、脚部３１の下方の端部が、安定して本体部１２０の表面１２０Ａに配置できる。
嵌め込み部１１０の側面には、ネジ穴１１１が設けられている。第１主脚３０の延長脚３３が嵌め込み部１１０に嵌め込まれた状態で、ネジ穴１１１を通るネジによって延長脚３３が嵌め込み部１１０に固定される。 Next, the fitting portion 110 of the leg end tool 100A will be described. The fitting portion 110 is a member for attaching the leg end tool 100 to the extension leg 33 of the first main leg 30 by fitting and fixing the extension leg 33 of the first main leg 30.
As shown in FIGS. 2A and 2F, the fitting portion 110 is disposed on the surface 120A of the main body 120, and has a columnar shape extending diagonally forward, that is, upward and in the first direction D1 from the surface 120A of the main body 120. . The upper part of the fitting part 110 is open, and the extension leg 33 of the first main leg 30 is fitted from this opening part. When the fitting portion 110 extends obliquely forward, as shown in FIG. 1A, when the leg 31 that leans forward is fitted into the fitting portion 110, the lower end of the leg 31 is stably fitted to the main body 120. On the surface 120A.
A screw hole 111 is provided on a side surface of the fitting portion 110. With the extension leg 33 of the first main leg 30 fitted into the fitting portion 110, the extension leg 33 is fixed to the fitting portion 110 by a screw passing through the screw hole 111.

嵌め込み部１１０の、第１方向Ｄ１に垂直な方向の中心となる点を繋ぐ直線（嵌め込み部１１０の中心線）は、図２Ｅに示すとおり、直線Ｌ３で表される。また、本体部１２０の、第１方向Ｄ１に垂直な方向の中心となる点を繋ぐ直線（本体部１２０の中心線）は、直線Ｌ４で表される。直線Ｌ３と直線Ｌ４とは一致せずにずれている。図２Ｅに示す脚端具１００Ａは、図１Ａに示すとおり、作業台１の右側の脚部３１に取り付けられることを考慮すると、嵌め込み部１１０の中心線Ｌ３は、本体部１２０の中心線Ｌ４より、作業台１の外側に位置することが分かる。このように、嵌め込み部１１０は、本体部１２０に対して、作業台１の外側（右側）に偏心して配置される。   As shown in FIG. 2E, a straight line (center line of the fitting portion 110) connecting the points of the fitting portion 110 that are centers in the direction perpendicular to the first direction D1 is represented by a straight line L3. In addition, a straight line (center line of the main body 120) connecting points that are centers of the main body 120 in a direction perpendicular to the first direction D1 is represented by a straight line L4. The straight line L3 and the straight line L4 are shifted without being coincident. Considering that the leg end tool 100A shown in FIG. 2E is attached to the right leg 31 of the worktable 1 as shown in FIG. 1A, the center line L3 of the fitting portion 110 is more than the center line L4 of the main body 120. It can be seen that it is located outside the work table 1. As described above, the fitting portion 110 is eccentrically disposed outside the work table 1 (right side) with respect to the main body 120.

次に、図２Ｃを参照して、嵌め込み部１１０と第１突起部１２２との関係を説明する。嵌め込み部１１０は、本体主部１２１の裏面１２１Ａでの平面視において、第１主脚３０の延長脚３３の外側に位置する。したがって、第１突起部１２２の端部Ｐ１、Ｐ２は、本体主部１２１の裏面１２１Ａでの平面視において、嵌め込み部１１０の内側に位置することになる。   Next, with reference to FIG. 2C, the relationship between the fitting portion 110 and the first protrusion 122 will be described. The fitting portion 110 is located outside the extension leg 33 of the first main leg 30 in plan view on the back surface 121A of the main body main portion 121. Therefore, the ends P1 and P2 of the first protrusion 122 are located inside the fitting portion 110 in a plan view on the back surface 121A of the main body 121.

次に、脚端具１００Ｂについて説明する。脚端具１００Ｂの形状は、脚端具１００Ａの形状と比べると、図２Ｅに示す脚端具１００Ａの本体部１２０の中心線Ｌ４を通り上下方向に伸びる平面に対して対称な形状である。その他の点については、脚端具１００Ｂは脚端具１００Ａと同様である。   Next, the leg end device 100B will be described. The shape of the leg end device 100B is symmetric with respect to a plane extending in the vertical direction through the center line L4 of the main body 120 of the leg end device 100A shown in FIG. In other respects, leg end device 100B is similar to leg end device 100A.

次に、図３Ａ、図３Ｂを参照して、脚端具２００Ａについて説明する。図３Ａは、脚端具２００Ａの側面図である。図３Ｂは、脚端具２００Ａの底面図である。脚端具２００Ａは、嵌め込み部２１０と本体部２２０とを備える。なお、脚端具２００Ａの第３方向Ｄ３は、図１Ａに示す作業台１の前方に一致する。
本体部２２０は、下側の主面である裏面が作業台１の接地面に接触する。また、本体部２２０の上側の主面である表面２２０Ａには、第２主脚４０の脚部４１を取り付けることができる。 Next, the leg end piece 200A will be described with reference to FIGS. 3A and 3B. FIG. 3A is a side view of the leg end device 200A. FIG. 3B is a bottom view of the leg end device 200A. The leg end device 200A includes a fitting portion 210 and a main body portion 220. The third direction D3 of the leg end device 200A coincides with the front of the work table 1 shown in FIG. 1A.
The back surface, which is the lower main surface of the main body 220, contacts the ground surface of the worktable 1. The leg 41 of the second main leg 40 can be attached to the upper surface 220A of the main body 220.

本体部２２０は、図３Ａに示すとおり、本体主部２２１と、突起部２２２とを備える。
本体主部２２１は、板状であり、本体部２２０の上側に位置する。本体主部２２１は、第３方向Ｄ３に向かうにつれて高さが高くなるため、脚端具１００Ａと同様に、表面２２０Ａが傾斜しており、脚部４１を安定して表面２２０Ａに配置できる。
突起部２２２は、本体主部２２１の裏面から下方に伸びる突起である。突起部２２２の断面は、図３Ａに示すように、下方に凸の円弧状の形状である。また、突起部２２２は、本体主部２２１の裏面において、図３Ｂに示すとおり、第３方向Ｄ３に垂直な方向の一方の端部から、他方の端部まで直線状に伸びるように形成される。突起部２２２は、本体主部２２１の第３方向Ｄ３に複数個並んで配置される。 The main body 220 includes a main body 221 and a protrusion 222, as shown in FIG. 3A.
The main body 221 has a plate shape and is located above the main body 220. Since the main body main portion 221 increases in height in the third direction D3, the surface 220A is inclined similarly to the leg end tool 100A, and the leg portion 41 can be stably disposed on the surface 220A.
The protrusion 222 is a protrusion extending downward from the back surface of the main body 221. As shown in FIG. 3A, the cross section of the protrusion 222 has a downwardly convex arc shape. The protrusion 222 is formed on the back surface of the main body 221 so as to linearly extend from one end in the direction perpendicular to the third direction D3 to the other end, as shown in FIG. 3B. . The plurality of protrusions 222 are arranged side by side in the third direction D3 of the main body main part 221.

嵌め込み部２１０は、脚端具１００Ａの嵌め込み部１１０と同様の構成であり、本体部２２０の表面２２０Ａに配置され、柱状の形状であって、上部の開口部分から第２主脚４０の延長脚４３が嵌め込まれる。嵌め込み部２１０の側面には、ネジ穴２１１が設けられて、ネジによって延長脚４３が嵌め込み部２１０に固定される。また、嵌め込み部２１０は、本体部２２０に対して、作業台１の外側（右側）に偏心して配置される。   The fitting portion 210 has the same configuration as the fitting portion 110 of the leg end tool 100A, is disposed on the surface 220A of the main body 220, has a columnar shape, and extends from the upper opening to the extension leg of the second main leg 40. 43 is fitted. A screw hole 211 is provided on a side surface of the fitting portion 210, and the extension leg 43 is fixed to the fitting portion 210 by a screw. Further, the fitting portion 210 is eccentrically arranged on the outside (right side) of the worktable 1 with respect to the main body 220.

脚端具２００Ｂは、脚端具２００Ａと同様の形状である。なお、脚端具２００Ｂの嵌め込み部１１０は、本体部２２０に対して、作業台１の外側（左側）に偏心して配置される。   The leg end device 200B has the same shape as the leg end device 200A. Note that the fitting portion 110 of the leg end device 200B is eccentrically disposed outside the working table 1 (left side) with respect to the main body 220.

以上説明したとおり、作業台１が備える脚端具１００は第１突起部１２２を備える。第１突起部１２２の第１方向Ｄ１の側の面と、本体部１２０の裏面１２０Ｂとのなす第１方向Ｄ１の側の角度αは、第１突起部１２２の第２方向Ｄ２の側の面と、本体部１２０の裏面１２０Ｂとのなす第２方向Ｄ２の側の角度βより小さい。よって、第１突起部１２２を第１方向Ｄ１に所定量変形させるために必要な力は、第２方向Ｄ２に所定量変形させるために必要な力より大きい。したがって、本体部１２０の上方から荷重がかかった状態で本体部１２０の下側を作業台１の接地面に接触させたとき、脚端具１００Ａを第１方向Ｄ１に動かすための力は、第２方向Ｄ２に動かすための力より小さくなる。   As described above, the leg end tool 100 included in the worktable 1 includes the first protrusion 122. The angle α between the surface of the first protrusion 122 in the first direction D1 and the back surface 120B of the main body 120 in the first direction D1 is the surface of the first protrusion 122 in the second direction D2. And the angle β on the side in the second direction D2 between the main body 120 and the back surface 120B. Therefore, the force required to deform the first protrusion 122 in the first direction D1 by a predetermined amount is greater than the force required to deform the first protrusion 122 in the second direction D2 by a predetermined amount. Therefore, when the lower side of the main body 120 is brought into contact with the ground surface of the worktable 1 under a load from above the main body 120, the force for moving the leg end tool 100A in the first direction D1 is the first force. It is smaller than the force for moving in two directions D2.

また、脚端具１００は第２突起部１２３及び第３突起部１２４を備える。そして、第２突起部１２３及び第３突起部１２４は、本体主部１２１の裏面１２１Ａから斜め後方に伸びるように形成される。よって、第２突起部１２３及び第３突起部１２４を第１方向Ｄ１に所定量変形させるために必要な力は、第２方向Ｄ２に所定量変形させるために必要な力より大きい。したがって、本体部１２０の上方から荷重がかかった状態で本体部１２０の下側を作業台１の接地面に接触させたとき、脚端具１００Ａを第１方向Ｄ１に動かすための力は、第２方向Ｄ２に動かすための力より小さくなる。   In addition, the leg end device 100 includes a second protrusion 123 and a third protrusion 124. The second protrusion 123 and the third protrusion 124 are formed to extend obliquely rearward from the rear surface 121A of the main body 121. Therefore, the force required to deform the second protrusion 123 and the third protrusion 124 in the first direction D1 by a predetermined amount is larger than the force necessary to deform the second protrusion 123 and the third protrusion 124 in the second direction D2 by a predetermined amount. Therefore, when the lower side of the main body 120 is brought into contact with the ground surface of the worktable 1 under a load from above the main body 120, the force for moving the leg end tool 100A in the first direction D1 is the first force. It is smaller than the force for moving in two directions D2.

ここで、第１方向Ｄ１は、作業台１の前方に等しい。よって、作業台１は、作業者が作業台１に乗って作業しても、脚端具１００の第１突起部１２２、第２突起部１２３及び第３突起部１２４により、後方には動きにくくなる。したがって、作業台１の安定性が向上する。また、作業台１は後方には動きにくくなるため、作業台１が置かれた階段２の段から後方の段に動くことがなく、作業台１の安定性が向上する。   Here, the first direction D1 is equal to the front of the work table 1. Therefore, even if an operator works on the work table 1, the work table 1 is hardly moved backward by the first protrusion 122, the second protrusion 123, and the third protrusion 124 of the leg end device 100. Become. Therefore, the stability of the work table 1 is improved. Further, since the work table 1 is hard to move backward, the work table 1 does not move from the step of the stairs 2 where the work table 1 is placed to the rear step, and the stability of the work table 1 is improved.

また、第１突起部１２２は、本体主部１２１の裏面１２１Ａにおいて、第１方向Ｄ１に垂直な方向の一方の端部から、他方の端部まで伸びるように形成される。そして、第１突起部１２２は、図２Ｃに示すとおり、２つの円弧状領域Ｒ１、Ｒ２を備える。よって、第１突起部１２２における作業台１の接地面との接触面積が増えて、脚端具１００の接地面に対する摩擦力が向上し、脚端具１００の動きにくさが増す。したがって、作業台１の安定性が向上する。   The first protrusion 122 is formed on the back surface 121A of the main body 121 so as to extend from one end in a direction perpendicular to the first direction D1 to the other end. The first protrusion 122 includes two arc-shaped regions R1 and R2, as shown in FIG. 2C. Therefore, the contact area of the first protrusion 122 with the ground surface of the worktable 1 increases, and the frictional force of the leg end device 100 against the ground surface is improved, and the leg end device 100 is harder to move. Therefore, the stability of the work table 1 is improved.

また、第１突起部１２２の端部Ｐ１、Ｐ２は、本体主部１２１の裏面１２１Ａでの平面視において、嵌め込み部１１０の内側に位置する。特に、図２Ｃに示すとおり、延長脚３３の延長脚壁３３Ａは第１突起部１２２の端部Ｐ１に重なり、延長脚３３の延長脚壁３３Ｃは第１突起部１２２の端部Ｐ２に重なる。
よって、脚端具１００の上方からの荷重は、第１突起部１２２の端部Ｐ１、Ｐ２に多くかかることになる。このため、作業台１で作業者が作業することで、脚端具１００を第１方向Ｄ１又は第２方向Ｄ２に力がかかると、第１突起部１２２の端部Ｐ１、Ｐ２に強く力がかかることになる。 The ends P1 and P2 of the first protrusion 122 are located inside the fitting portion 110 in a plan view on the back surface 121A of the main body 121. In particular, as shown in FIG. 2C, the extension leg wall 33A of the extension leg 33 overlaps the end P1 of the first projection 122, and the extension leg wall 33C of the extension leg 33 overlaps the end P2 of the first projection 122.
Therefore, a large load from above the leg end tool 100 is applied to the ends P1 and P2 of the first protrusion 122. For this reason, when a force is applied to the leg end device 100 in the first direction D1 or the second direction D2 by the worker working on the worktable 1, a strong force is applied to the ends P1 and P2 of the first protrusion 122. That would be.

ここで、端部Ｐ１は第１突起部１２２の円弧状領域Ｒ１に含まれて最も第２方向Ｄ２の側となる部分であり、端部Ｐ２は第１突起部１２２の円弧状領域Ｒ２に含まれて最も第２方向Ｄ２の側となる部分である。
したがって、端部Ｐ１、Ｐ２にかかる力は端部Ｐ１、Ｐ２の隣接領域に分散されるため、第１突起部１２２の端部Ｐ１、Ｐ２が第１突起部１２２の他の部分と比べて早くすり減ることを防止でき、第１突起部１２２の耐用期間を長くできる。また、第１突起部１２２はほぼ均等にすり減るため、作業台１の安定性を損ねずに、作業台１の滑りにくさを維持できる。 Here, the end portion P1 is a portion included in the arc-shaped region R1 of the first protrusion 122 and located closest to the second direction D2, and the end portion P2 is included in the arc-shaped region R2 of the first protrusion 122. Is the part closest to the second direction D2.
Therefore, since the force applied to the ends P1 and P2 is dispersed in the region adjacent to the ends P1 and P2, the ends P1 and P2 of the first protrusion 122 are faster than the other parts of the first protrusion 122. Wear can be prevented, and the service life of the first protrusion 122 can be lengthened. In addition, since the first protrusions 122 are worn almost evenly, it is possible to maintain the stability of the worktable 1 without impairing the stability of the worktable 1.

また、脚端具１００の嵌め込み部１１０は、本体部１２０に対して、作業台１の外側に偏心して配置される。したがって、作業台１を壁に隣接して配置することを考えると、嵌め込み部１１０が作業台１の内側に偏心して配置される場合と比べて、作業台１をより壁側に近づけて配置できる。また、脚端具１００の本体部１２０は、嵌め込み部１１０に対して、作業台１の内側の面積の方が、作業台１の外側の面積より大きい。こうして、脚端具１００における作業台１の接地面との接触面積を増やすことで、作業台１の滑りにくさを向上させられる。   The fitting portion 110 of the leg end tool 100 is disposed eccentrically to the outside of the work table 1 with respect to the main body 120. Therefore, considering that the work table 1 is arranged adjacent to the wall, the work table 1 can be arranged closer to the wall side than when the fitting portion 110 is arranged eccentrically inside the work table 1. . In the main body 120 of the leg end device 100, the area inside the worktable 1 with respect to the fitting part 110 is larger than the area outside the worktable 1. In this way, by increasing the contact area of the leg end tool 100 with the ground surface of the worktable 1, the worktable 1 is less likely to slide.

（その他の実施形態）
上記の脚端具１００では、図２Ｃに示すとおり、第１突起部１２２、第２突起部１２３及び第３突起部１２４は、本体主部１２１の裏面１２１Ａにおいて、第１方向Ｄ１に垂直な方向の一方の端部から、他方の端部まで伸びるように形成される。しかし、第１突起部１２２、第２突起部１２３及び第３突起部１２４の少なくとも何れかは、第１方向Ｄ１に垂直な方向の端部まで伸びていなくてもよい。また、第１突起部１２２、第２突起部１２３及び第３突起部１２４の少なくとも何れかは、第１方向Ｄ１に垂直な方向に並ぶように配置されてもよい。 (Other embodiments)
In the leg end device 100, as shown in FIG. 2C, the first protrusion 122, the second protrusion 123, and the third protrusion 124 are formed on the back surface 121A of the main body 121 in a direction perpendicular to the first direction D1. Is formed to extend from one end to the other end. However, at least one of the first protrusion 122, the second protrusion 123, and the third protrusion 124 does not need to extend to the end in the direction perpendicular to the first direction D1. Further, at least one of the first protrusion 122, the second protrusion 123, and the third protrusion 124 may be arranged so as to be arranged in a direction perpendicular to the first direction D1.

また、上記の脚端具１００は、図２Ｃに示すとおり、２つの円弧状領域Ｒ１、Ｒ２を備える。しかし、脚端具１００は、円弧状領域Ｒ１、Ｒ２ではなく、折れ線領域を備えるようにしてもよい。ここで、折れ線領域は、本体主部１２１の裏面１２１Ａにおいて、２つ以上の方向の異なる線分が接続する形状の領域である。   The leg end device 100 includes two arc-shaped regions R1 and R2 as shown in FIG. 2C. However, the leg end device 100 may include a broken line region instead of the arc-shaped regions R1 and R2. Here, the polygonal line region is a region on the back surface 121A of the main body 121 where the line segments in two or more directions are connected.

また、上記の作業台１は、第２主脚４０の脚部４１には、脚端具１００ではなく脚端具２００が取り付けられている。しかし、第２主脚４０の脚部４１に脚端具１００を取り付けてもよい。このとき、第２主脚４０の右側の脚部４１に取り付けられる脚端具１００の形状は、脚端具１００Ａと比べると、第１方向Ｄ１に垂直な面に対して対称な形状とする。また、第２主脚４０の左側の脚部４１に取り付けられる脚端具１００の形状は、脚端具１００Ｂと比べると、第１方向Ｄ１に垂直な面に対して対称な形状とする。ただし、第２主脚４０の脚部４１に取り付けられる脚端具１００の嵌め込み部１１０は、本体部１２０の表面１２０Ａから、第２主脚４０の脚部４１の向く方向と同じ方向に伸びるような形状とする。
これにより、作業台１は、第１主脚３０の脚部３１に取り付けられる脚端具１００によって、前方に滑りにくくなる。そして、第２主脚４０の脚部４１に取り付けられる脚端具１００によって、後方に滑りにくくなる。したがって、作業台１の安定度が向上する。 Further, in the working table 1, not the leg terminal 100 but the leg terminal 200 is attached to the leg 41 of the second main leg 40. However, the leg end tool 100 may be attached to the leg 41 of the second main leg 40. At this time, the shape of the leg end device 100 attached to the right leg portion 41 of the second main leg 40 is symmetrical with respect to a plane perpendicular to the first direction D1 as compared with the leg end device 100A. The shape of the leg end tool 100 attached to the left leg 41 of the second main leg 40 is symmetrical with respect to a plane perpendicular to the first direction D1 as compared to the leg end tool 100B. However, the fitting portion 110 of the leg end tool 100 attached to the leg 41 of the second main leg 40 extends from the surface 120A of the main body 120 in the same direction as the direction of the leg 41 of the second main leg 40. Shape.
Thus, the work table 1 is less likely to slip forward due to the leg end tool 100 attached to the leg 31 of the first main leg 30. Then, the leg end device 100 attached to the leg portion 41 of the second main leg 40 makes it difficult to slip backward. Therefore, the stability of the work table 1 is improved.

また、第２主脚４０の右側の脚部４１に取り付けられる脚端具１００の本体部１２０の裏面１２０Ｂを、脚端具１００Ａの本体部１２０の裏面１２０Ｂと同じ形状にしてもよい。さらに、第２主脚４０の左側の脚部４１に取り付けられる脚端具１００の本体部１２０の裏面１２０Ｂを、脚端具１００Ｂの本体部１２０の裏面１２０Ｂと同じ形状にしてもよい。
これにより、作業台１は、第１主脚３０の脚部３１に取り付けられる脚端具１００、及び、第２主脚４０の脚部４１に取り付けられる脚端具１００によって、後方に滑りにくくなる。したがって、作業台１は後方には動きにくくなるため、作業台１が置かれた階段２の段から後方の段に動くことがなく、作業台１の安定性が向上する。 Further, the back surface 120B of the main body 120 of the leg end tool 100 attached to the right leg 41 of the second main leg 40 may have the same shape as the back surface 120B of the main body 120 of the leg end device 100A. Further, the back surface 120B of the main body 120 of the leg end device 100 attached to the left leg portion 41 of the second main leg 40 may have the same shape as the back surface 120B of the main body portion 120 of the leg end device 100B.
As a result, the work table 1 is less likely to slip rearward due to the leg ends 100 attached to the legs 31 of the first main leg 30 and the leg ends 100 attached to the legs 41 of the second main leg 40. . Therefore, the workbench 1 does not easily move backward, so that the workbench 1 does not move from the step of the stairs 2 where the workbench 1 is placed to the rear step, and the stability of the workbench 1 is improved.

また、本体主部１２１の裏面に形成される複数の突起部は、第１突起部１２２、第２突起部１２３及び第３突起部１２４のいずれか１つ又は２つの種類の突起部のみであってもよい。
また、本体主部１２１の裏面に形成される複数の突起部の少なくとも１つは、第１突起部１２２、第２突起部１２３及び第３突起部１２４ではなく、図３Ａに示す突起部２２２の形状であってもよい。
また、上記の実施形態では、脚端具１００は作業台１に取り付けられる。しかし、脚端具１００はハシゴの脚部の下端部に取り付けられてもよい。このとき、脚端具１００の第１方向Ｄ１は、例えば、ハシゴが傾けられる方向に一致するようにする。 Further, the plurality of protrusions formed on the back surface of the main body 121 are only one or two types of the first protrusion 122, the second protrusion 123, and the third protrusion 124. You may.
Further, at least one of the plurality of protrusions formed on the back surface of the main body 121 is not the first protrusion 122, the second protrusion 123, and the third protrusion 124, but the protrusion 222 shown in FIG. 3A. It may be shaped.
In the above embodiment, the leg end tool 100 is attached to the work table 1. However, the leg end device 100 may be attached to the lower end of the ladder leg. At this time, the first direction D1 of the leg end device 100 is set to, for example, match the direction in which the ladder is inclined.

以上、本発明を上述した実施形態と共に説明したが、本発明は上述した実施形態にのみ限定されるものではなく、本発明の範囲内で変更などが可能であり、上述した実施形態を適宜、組み合わせてもよい。   As described above, the present invention has been described with the above-described embodiments. However, the present invention is not limited to only the above-described embodiments, and can be modified within the scope of the present invention. They may be combined.

１ 作業台、２ 階段、３０ 第１主脚、３１ 脚部、４０ 第２主脚、４１ 脚部、１００ 脚端具、２００ 脚端具   Reference Signs List 1 work table, 2 stairs, 30 first main leg, 31 legs, 40 second main leg, 41 legs, 100 leg ends, 200 leg ends

Claims (8)

作業台の脚部に取り付けられる脚端具であって、
表面に前記脚部を配置でき、上方から荷重がかかった状態で裏面を前記作業台の接地面に接触させたとき、第１方向に動かすための力が、前記第１方向とは反対の方向である第２方向に動かすための力より小さい本体部を備え、
前記本体部は、
上部の本体主部と、
前記本体主部の裏面から下方に伸びる突起部と、を備え、
前記突起部は、
前記本体主部の裏面において前記第１方向に対して垂直な方向の一方の端部側から他方の端部側に向かって伸びるように形成され、
前記突起部は、更に、
前記突起部のうち最も前記第２方向の側となる端部から、前記一方の端部側および前記他方の端部側に向かうにしたがって、前記第２方向の側となる端部が前記第１方向の側に位置するように形成されていることを特徴とする脚端具。 A leg end device attached to a leg portion of a worktable,
The leg portion can be arranged on the front surface, and when the back surface is brought into contact with the ground surface of the worktable in a state where a load is applied from above, the force for moving in the first direction is opposite to the first direction. A body that is smaller than the force for moving in the second direction,
The main body is
The main body at the top,
A projection extending downward from the back surface of the main body,
The protrusion is
On the back surface of the main body portion, formed so as to extend from one end side in the direction perpendicular to the first direction toward the other end side,
The protrusion further includes:
The end in the second direction is closer to the first end than the first end in the second direction, from the end in the second direction, toward the one end and the other end. A leg end piece formed to be located on the side in the direction. 前記突起部は、
前記本体主部の裏面での平面視において、前記第２方向に凸となる円弧状領域を備えることを特徴とする請求項１に記載の脚端具。 The protrusion is
2. The leg end device according to claim 1, further comprising an arc-shaped region that is convex in the second direction in a plan view on the back surface of the main body. 3. 前記突起部は、
前記本体主部の裏面での平面視において、前記第２方向に凸となる折れ線領域を備えることを特徴とする請求項１に記載の脚端具。 The protrusion is
2. The leg end device according to claim 1, further comprising a polygonal line region that is convex in the second direction in a plan view on the back surface of the main body. 3. 前記本体部の表面に、前記脚部を嵌め込み可能な嵌め込み部をさらに備え、
前記突起部のうち最も前記第２方向の側の端部は、前記本体主部の前記裏面での平面視において、前記嵌め込み部の内側に位置することを特徴とする請求項１乃至３のいずれか１項に記載の脚端具。 On the surface of the main body, further comprises a fitting portion capable of fitting the leg portion,
The end of the projection in the second direction closest to the second direction is located inside the fitting portion in a plan view on the back surface of the main body. 5. 2. The leg end device according to claim 1. 前記突起部は、前記第１方向に所定量変形させるために必要な力が、前記第２方向に前記所定量変形させるために必要な力より大きいことを特徴とする請求項１乃至４のいずれか１項に記載の脚端具。   The force required to deform the projection in the first direction by a predetermined amount is greater than the force required to deform the projection in the second direction by the predetermined amount. 2. The leg end device according to claim 1. 複数ある前記突起部の少なくとも１つは、前記第１方向の側の面と前記本体部の裏面とのなす前記第１方向の側の角度が、前記突起部の前記第２方向の側の面と前記本体部の裏面とのなす前記第２方向の側の角度より小さいことを特徴とする請求項１乃至５のいずれか１項に記載の脚端具。   At least one of the plurality of protrusions has an angle in the first direction between a surface in the first direction and a back surface of the main body, and a surface of the protrusion in the second direction. The leg end device according to any one of claims 1 to 5, wherein the angle between the second direction and the rear surface of the body portion is smaller than an angle formed between the leg portion and the second direction. 複数ある前記突起部の少なくとも１つは、前記本体主部の裏面から下方かつ前記第２方向に伸びることを特徴とする請求項１乃至６のいずれか１項に記載の脚端具。   The leg end device according to any one of claims 1 to 6, wherein at least one of the plurality of protrusions extends downward from the back surface of the main body portion and in the second direction. 作業台であって、
少なくとも一対の脚部を備える第１主脚と、
少なくとも一対の脚部を備え、前記第１主脚の前方に位置する第２主脚と、
前記第１主脚の脚部に取り付けられ、前記第１方向が前記前方である請求項１乃至７のいずれか１項に記載の脚端具と、を備えることを特徴とする作業台。 A workbench,
A first main leg having at least a pair of legs,
A second main leg, comprising at least a pair of legs, located in front of the first main leg;
A work table comprising: a leg end tool according to any one of claims 1 to 7 , which is attached to a leg of the first main leg, and wherein the first direction is the front.
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