JP6677992B2 - Workbench and leg ends - Google Patents

Description

  The present invention relates to a workbench and a leg end attached to a workbench leg.

  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.

Japanese Utility Model Publication No. 6-73300

  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.

  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.

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.

  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.

It is a perspective view of a work bench. It is a rear view of a work bench. It is a side view of a leg end tool. It is a partially enlarged view of the side view of a leg end tool. It is a bottom view of a leg end tool. It is a rear view of a leg end tool. It is a top view of a leg end tool. It is sectional drawing of a leg end tool. It is a side view of other leg end tools. It is a bottom view of other leg end tools.

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.

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.

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. .

  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.

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.

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.

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.

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.

  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.

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.

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.

  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.

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.

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.

  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.

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.

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.

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.

  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.

  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.

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.

  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.

  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.

  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.

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.

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.

  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.

  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.

  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.

  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.

  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.

  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.

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.

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.

  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.

(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.

  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.

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.

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.

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.

  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.

  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)

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. 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. 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. 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.   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.   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.   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. 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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