JP7052982B2 - Leg seat and workbench - Google Patents

Description

The present invention relates to a pedestal and a workbench.

In order to stably ground a workbench such as a portable workbench or a stepped workbench to the floor surface, a workbench in which a leg seat is attached to the lower end of the leg of the workbench has been conventionally known. Patent Document 1 discloses a workbench in which a rubber cylinder is fitted and fixed to each of the four legs.

Jitsukaihei 7-14100 Gazette

In order to use such a workbench, for example, at a work site of construction work, it is necessary to completely ground the pedestal to the floor surface. However, since the floor surface of the work site is in the middle of construction, there are many obstacles in which the pedestal cannot be grounded to the floor surface. In particular, there may be a hole in the opening member called a sleeve on the floor surface. The sleeve is a hole that is pre-drilled in a concrete floor or the like in order to allow water supply / drainage pipes, electrical wiring, and the like to pass through.
Here, it is assumed that the operator who tries to ground the workbench does not notice the hole in the sleeve and arranges the leg seat on the hole. In such a state, the leg seat is inserted into the hole of the sleeve, and there is a problem that the workbench cannot be stably grounded to the floor surface.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to enable the workbench to be stably grounded to the floor surface.

The pedestal of the present invention is a pedestal that is attached to a plurality of legs of a workbench and is in contact with a floor surface, and the pedestal is inserted into a hole having a diameter of 75 mm or more formed in the floor surface. The mounting portion has a grounding portion having a size that cannot be used and a mounting portion that is attached to the leg portion of the workbench and is located above the grounding portion, and the grounding portion is grounded to the floor surface. The portion is characterized in that the length in the front-rear direction is longer than the length in the left- right direction, and the ground contact portion is longer in the left- right direction than the length in the front- rear direction.
The workbench of the present invention is a workbench attached to each of a plurality of legs and provided with a pedestal that is in contact with the floor surface, and the pedestal is formed on the floor surface and has a diameter of 75 mm or more. A state in which the grounding portion has a grounding portion having a size that cannot be inserted into the hole of the workbench and a mounting portion that is attached to the leg of the workbench and is located above the grounding portion, and the grounding portion is grounded to the floor surface. The mounting portion is characterized in that the length in the front-rear direction is longer than the length in the left- right direction, and the ground contact portion is longer in the left- right direction than the length in the front- rear direction.

According to the present invention, the workbench can be stably grounded to the floor surface.

It is a perspective view which shows the structure of a workbench. It is a front view which shows the structure of a workbench. It is a top view which shows the structure of a workbench. It is a side view of a leg seat. It is an enlarged view which enlarged a part of a leg seat. It is a bottom view of a leg seat. It is a rear view of a leg seat. It is a plan view of a leg seat. It is a plan view of a leg seat. It is sectional drawing of a pedestal. It is sectional drawing of a pedestal. It is a figure which shows the relationship between the ground contact part of a leg seat, and a hole.

Hereinafter, the pedestal and the workbench according to the present embodiment will be described with reference to the drawings.
First, a portable workbench 1 as a workbench according to the present embodiment will be described.
FIG. 1A is a perspective view of the portable workbench 1. FIG. 1B is a front view of the portable workbench 1. FIG. 1C is a plan view of the portable workbench 1. In the front view shown in FIG. 1B, the left-right direction is referred to as the width direction, the center side in the width direction is referred to as the inside, and the right side and the left side from the center are referred to as the outside. Further, as shown in FIG. 1C, the side approaching the alternate long and short dash line is referred to as the front side, and the side away from the alternate long and short dash line is referred to as the posterior side. The alternate long and short dash line shown in FIG. 1C is the center line in the length of the portable workbench 1 in the front-rear direction.

The portable workbench 1 includes a top plate 10, an enclosure 20, a main landing gear 30, a stay 50, and a leg seat 100.
The top plate 10 serves as a scaffold for the worker to work on the portable work table 1. The top plate 10 is a plate-shaped member, and has a rectangular shape that is long in the front-rear direction when viewed from the vertical direction.

The enclosure 20 surrounds the worker so that the worker does not fall from the portable workbench 1 when the worker is working on the top plate 10. The enclosure 20 has four columns 21, a pair of longitudinal rail members 22, and a pair of short side rail members 23. The four columns 21 are erected at the four corners of the top plate 10, respectively. The pair of longitudinal rail members 22 are bridged between the columns 21 on the upper side of the long side of the four sides of the top plate 10. The longitudinal crosspiece member 22 is divided and configured at substantially the center in the longitudinal direction. The pair of short side rail members 23 are bridged between the columns 21 on the upper side of the short side of the four sides of the top plate 10. The pair of short side rail members 23 can be separated from the state of being connected to the support column 21 so that the operator can move back and forth between the main landing gear 30 and the top plate 10.
Further, the pair of longitudinal side rail members 22 and the pair of short side rail members 23 can be folded so as to be in a state along the support column 21. Further, the support column 21 can be folded so as to be in a state along the main landing gear 30.

The main landing gear 30 supports the top plate 10 in a horizontal state. The main landing gear 30 has a first main landing gear 31 and a second main landing gear 32. The first main landing gear 31 and the second main landing gear 32 have the same configuration, respectively, and the first main landing gear 31 will be described here.
The first main landing gear 31 has a leg portion 33a, a leg portion 33b, and a plurality of crosspiece members 36.
As shown in FIG. 1B, the legs 33a and the legs 33b have a symmetrical configuration with respect to the center line Lc, which is the center in the width direction of the portable workbench 1. The legs 33a and 33b are rod-shaped members whose upper portions are connected to the corners of the top plate 10 and whose lower portions extend to the floor surface (ground plane) of the portable workbench 1. The legs 33a and 33b are arranged with respect to the floor surface so that the distance between the legs 33a and 33b increases from the top plate 10 toward the floor surface of the portable workbench 1.

The leg portion 33a and the leg portion 33b each include a support leg 34 and a telescopic leg 35, respectively. The strut leg 34 is a rod-shaped member constituting the upper part of the leg portion 33 and is hollow. The upper end of the column leg 34 is connected to the top plate 10. The telescopic leg 35 is a rod-shaped member extending downward along the support leg 34 from the lower end of the support leg 34. The upper portion of the telescopic leg 35 fits inside the support leg 34. The length of the telescopic leg 35 that fits inside the strut leg 34 is adjustable, and by adjusting the length of the telescopic leg 35 that fits inside the strut leg 34, the entire leg portion 33a and the leg portion 33b can be adjusted. The length can be adjusted. In FIGS. 1B and 1C, the telescopic legs 35 are locked by the lock member 37 in a state of being adjusted to be the longest.

The crosspiece member 36 is bridged between the leg portion 33a and the leg portion 33b. The crosspiece member 36 is a rod-shaped member and improves the strength of the first main landing gear 31. Further, the crosspiece member 36 serves as a treadle when the operator moves up and down on the top plate 10. The crosspiece member 36 is fixed to the leg portion 33a and the leg portion 33b at a vertical interval so that the operator can easily move up and down.
The stay 50 connects the top plate 10 and the first main landing gear 31, and the top plate 10 and the second main landing gear 32. Further, the stay 50 reinforces the portable workbench 1 by setting the angle between the top plate 10 and the first main landing gear 31 and the angle between the top plate 10 and the second main landing gear 32 to a predetermined angle.

The first main landing gear 31 and the second main landing gear 32 can be folded. The second main landing gear 32 is rotated around the connection portion between the second main landing gear 32 and the top plate 10 so that the crosspiece member 36 of the second main landing gear 32 approaches the lower surface of the top plate 10. Further, the first main landing gear 31 is rotated around the connection portion between the first main landing gear 31 and the top plate 10 so that the crosspiece member 36 of the first main landing gear 31 approaches the lower surface of the top plate 10. .. In this way, the first main landing gear 31 and the second main landing gear 32 are in a folded state, and the operator can easily transport the portable workbench 1.
The top plate 10, the first main landing gear 31, the second main landing gear 32, and the stay 50 are mainly made of a metal material such as an aluminum alloy. Further, the member of the enclosure 20 that requires strength is formed of a metal material such as an aluminum alloy, and the member that does not require strength is formed of synthetic resin.

The landing gear 100 is attached to the lower ends of the legs 33a and 33b of the first main landing gear 31 and the lower ends of the legs 33a and 33b of the second main landing gear 32, respectively. The leg seat 100 is formed in such a size that the portable workbench 1 does not slip with respect to the floor surface and can be inserted into a hole having a predetermined diameter (inner diameter) or more formed on the floor surface.
The leg seat 100 of the present embodiment includes two types of leg seats 100a and 100b. The landing gear 100a is attached to the respective leg portions 33a of the first main landing gear 31 and the second main landing gear 32. The landing gear 100b is attached to each leg portion 33b of the first main landing gear 31 and the second main landing gear 32. The leg seats 100a and 100b are made of a flexible material such as soft vinyl chloride. However, the leg seats 100a and 100b may be formed of other materials such as synthetic rubber and synthetic resin. The leg seat 100a and the leg seat 100b have a symmetrical configuration with respect to the center line Lc shown in FIG. 1B.

Next, the leg seat 100a will be described with reference to FIGS. 2A to 2F.
FIG. 2A is a side view of the leg seat 100a, and is a view seen from the A direction (inside) shown in FIG. 1B. FIG. 2B is an enlarged view of a part of FIG. 2A. FIG. 2C is a bottom view of the leg seat 100a. FIG. 2D is a rear view of the leg seat 100a, and is a view seen from the direction B of FIG. 2A. FIG. 2E is a plan view of the leg seat 100a. FIG. 2F is a plan view of the leg seat 100a seen from the direction in which the leg portion 33a (expandable leg 35) is inserted. FIG. 2G is a cross-sectional view cut in the vertical direction so as to pass through points C-C'of FIG. 2F. FIG. 2H is a cross-sectional view cut in the vertical direction so as to pass through points E-E'of FIG. 2F.

The leg seat 100a has a mounting portion 110, a ground contact portion 130, and a rib portion 150.
First, the mounting portion 110 will be described.
The mounting portion 110 is a portion for mounting the leg seat 100a to the leg portion 33a. The mounting portion 110 has a substantially block shape extending upward from the grounding portion 130. Specifically, the mounting portion 110 is formed in a cylindrical shape with an opening on the upper side, and the lower side is closed by the grounding portion 130. As shown in FIG. 2A, when viewed from the inside, the mounting portion 110 is inclined so as to be inclined toward the front side toward the upper side. That is, the mounting portion 110 extends from the grounding portion 130 in the direction of arrow D1. Further, as shown in FIG. 2D, the mounting portion 110 is tilted inward toward the upper side. That is, the mounting portion 110 extends from the grounding portion 130 in the direction of arrow D2.

The mounting portion 110 has a front side wall 111, a rear side wall 112, an inner side wall 113, an outer wall 114, and a bottom portion 115. The space surrounded by the front side wall 111, the rear side wall 112, the inner side wall 113, and the outer wall 114 is a mounting space 116 into which the telescopic legs 35 of the leg portion 33a are inserted.

As shown in FIG. 2F, the front side wall 111 and the rear side wall 112 face each other with the mounting space 116 in between and are parallel to each other. The front side wall 111 and the rear side wall 112 have a protrusion 117 whose substantially center in the width direction projects toward the mounting space 116 side toward each other. The inner side wall 113 and the outer wall 114 face each other with the mounting space 116 in between and are parallel to each other. Further, the distance between the front side wall 111 and the rear side wall 112 is longer than the distance between the inner side wall 113 and the outer wall 114. Therefore, the mounting portion 110 is formed longer in the front-rear direction along the horizontal direction than in the width direction along the horizontal direction. Further, the inner side wall 113 and the outer wall 114 are each formed with an insertion hole 118 in the width direction. By inserting a bolt (not shown) into the telescopic leg 35 inserted into the insertion hole 118 and the mounting space 116, the telescopic leg 35 is fixed to the mounting portion 110 via the bolt.

Here, the telescopic legs 35 inserted into the mounting space 116 will be described.
FIG. 2F shows the cross-sectional shape of the telescopic leg 35 in gray. The telescopic leg 35 has a tubular shape whose cross section shown by FIG. 2F is continuous along the extending direction of the telescopic leg 35. The telescopic legs 35 are formed, for example, by extruding an aluminum alloy, and are formed by cutting in a direction substantially orthogonal to the extending direction of the telescopic legs 35.
As shown in FIG. 2F, the cross-sectional shape of the telescopic leg 35 is a shape obtained by substantially reducing the shape of the mounting portion 110 including the front side wall 111, the rear side wall 112, the inner side wall 113, and the outer wall 114. The telescopic legs 35 are fitted into the mounting space 116 of the mounting portion 110 without play. The telescopic leg 35 has a front side plate 38, a rear side plate 39, an inner plate 40, and an outer plate 41. The front side plate 38 and the rear side plate 39 face each other, and the inner plate 40 and the outer side plate 41 face each other. The front side plate 38 and the rear side plate 39 are each recessed so that the substantially center in the width direction matches the shape of the protruding portion 117 of the mounting portion 110. Therefore, in the state where the telescopic legs 35 are inserted into the mounting space 116, the extending direction of the telescopic legs 35 coincides with the extending direction of the mounting portion 110 (arrows D1 in FIG. 2A and arrows D2 in FIG. 2D).

Returning to the description of the mounting portion 110, the bottom portion 115 supports the telescopic legs 35 by abutting the lower ends of the telescopic legs 35. The bottom portion 115 is a surface substantially orthogonal to the extending direction of the mounting portion 110 or the extending direction of the telescopic legs 35. The bottom portion 115 is formed from the front side wall 111 to the rear side wall 112 on the mounting space 116 side of the inner side wall 113, and is formed from the front side wall 111 to the rear side wall 112 on the mounting space 116 side of the outer wall 114. Will be done. On the other hand, the bottom portion 115 is not formed on the mounting space 116 side of the protruding portion 117 of the front side wall 111 and on the mounting space 116 side of the protruding portion 117 of the rear side wall 112. That is, the bottom portion 115 is divided into left and right, and a concave portion 119 is formed in the center as a lightening portion that is recessed toward the ground contact portion 130 side (lower side).
The bottom 115 on the inner side wall 113 side supports the lower end of the telescopic legs 35 on the inner plate 40 side, and the bottom 115 on the outer wall 114 side supports the lower end of the telescopic legs 35 on the outer plate 41 side.

Next, the grounding portion 130 will be described.
The ground contact portion 130 is a portion for grounding the leg seat 100a to the floor surface. The grounding portion 130 is located below the mounting portion 110 and is integrally formed with the mounting portion 110.
The ground contact portion 130 of the present embodiment is formed to a size that cannot be inserted into the hole of the sleeve made in the floor surface of the work site. The sleeve is available in multiple sizes depending on the size and number of pipes and wires to be inserted. Generally, there are types of sleeves used for penetrating the floor of building work, such as diameters (inner diameters) of 50 mm, 75 mm, 90 mm, 100 mm, 125 mm, 150 mm, and 175 mm. When a hole of such a type of sleeve is present on the floor surface, it is assumed that the operator unaware of the sleeve and arranges the leg seat 100a on the hole of the sleeve.

Therefore, the ground contact portion 130 of the leg seat 100a of the present embodiment is set to a size that cannot be inserted into the hole of the sleeve.
Specifically, the grounding portion 130 has a size that cannot be inserted into a hole having a diameter of 75 mm or more. Here, the reason why the diameter of 75 mm or more is specified is that the hole having a diameter of 75 mm is relatively large, and for example, in a conventional leg seat, there is a possibility that the hole will be inserted into the hole.
Further, the ground contact portion 130 preferably has a diameter of 75 mm or more and a size that cannot be inserted into a hole having a diameter of 150 mm or less. Here, the reason why the hole having a diameter of 150 mm or less is defined is that the hole larger than the hole having a diameter of 150 mm is of a size that is easily noticed by the operator in the first place.
Further, the ground contact portion 130 preferably has a diameter of 75 mm or more and a size that cannot be inserted into a hole having a diameter of 100 mm or less. Here, the reason why the hole having a diameter of 100 mm or less is specified is that the lid is often specified to be installed in the hole having a diameter larger than 100 mm at the work site.
As described above, since the ground contact portion 130 has a size that cannot be inserted into the hole having a predetermined diameter, even if the ground contact portion 130 of the leg seat 100a is arranged on the hole, the ground contact portion 130 is not inserted into the hole. Since it is grounded to the floor surface around the hole, the portable workbench 1 can be stably grounded.

Hereinafter, the grounding portion 130 will be specifically described.
The grounding portion 130 has a flat block shape located below the mounting portion 110. The ground contact portion 130 is formed below the mounting portion 110 so as to extend in the front-rear direction and the width direction. The ground contact portion 130 of the present embodiment is formed in a substantially rectangular shape, and has a front end surface 131, a rear end surface 132, an inner end surface 133, an outer end surface 134, a front surface portion 135, and a back surface portion 136. As shown in FIG. 2A, the front end surface 131 and the rear end surface 132 are surfaces that incline forward toward the upper side and are substantially parallel to each other. Further, as shown in FIG. 2D, the inner end surface 133 and the outer end surface 134 are surfaces that incline inward toward the upper side, and are substantially parallel to each other. A curved surface is formed at the corner portion which is the boundary between the front end surface 131, the rear end surface 132, the inner end surface 133, and the outer end surface 134. Further, the surface portion 135 is a flat surface, and is inclined upward toward the outside and inclined upward toward the rear side. Therefore, the corner portion between the rear end surface 132 and the outer end surface 134 of the surface portion 135 is located on the uppermost side.
Further, the distance between the inner end surface 133 and the outer end surface 134 is longer than the distance between the front end surface 131 and the rear end surface 132. Therefore, the ground contact portion 130 is formed longer in the width direction along the horizontal direction than in the front-rear direction along the horizontal direction.

Further, the back surface portion 136 is a portion that comes into contact with the floor surface and has a plurality of protrusion portions 137.
The protrusion 137 is formed so that the force for moving the leg seat 100a to the front side in the front-rear direction in the horizontal direction is smaller than the force for moving the leg seat 100a to the rear side in a state of being in contact with the floor surface.
As shown in FIG. 2A, the protrusion 137 is formed so as to extend obliquely to the rear side, that is, to the lower side and the rear side toward the tip end. The cross section of the lower tip of the protrusion 137 has a semicircular shape. Further, a plurality (for example, 10) of the protrusions 137 are arranged side by side from the front end surface 131 to the rear end surface 132.

The cross-sectional shape of the protrusion 137 is substantially the same at any position. Therefore, the cross-sectional shape of the protrusion 137 will be described with reference to the side surface of the protrusion 137 shown in FIG. 2B.
The protrusion 137 is formed so as to extend diagonally to the rear side. The fact that the protrusion 137 extends diagonally to the rear means that the center line Ln of the protrusion 137 extends diagonally to the rear. The center line Ln is an arbitrary point at the end of the front surface 138a of the protrusion 137 and the rear surface of the protrusion 137 at the same height as this point when considering the cross-sectional view of the protrusion 137. It is a line consisting of a point of 138b and an intermediate point of.

Further, as shown in FIG. 2C, when the ground contact portion 130 is viewed from the back side, the protrusion 137 is formed from the inner end surface 133 to the outer end surface 134 of the ground contact portion 130. Here, the front side and the center side (eight protrusions 137 from the front side) of the protrusions 137 are formed so as to pass through three arcuate shapes that are convex to the rear side from the inner end surface 133 to the outer end surface 134. Will be done. Further, a drain hole 139 is formed at a position of the protrusion 137 that is biased toward the inside and the front side. The drain hole 139 communicates with the recess 119 of the mounting portion 110, and drains the water accumulated in the recess 119 to the outside. Further, the rear side (two protrusions 137 from the rear side) of the protrusions 137 is linear from the inner end surface 133 to the outer end surface 134. A recess 140 is formed between the linear protrusions 137 as a lightening portion that is recessed upward.

Next, the relationship between the size of the ground contact portion 130 and the hole of the sleeve will be described.
FIG. 3 is a cross-sectional view taken along the line I-I of FIG. 2A, and is a view of the ground contact portion 130 of the leg seat 100a viewed from the vertical direction with respect to the floor surface. Further, the circle 200 shown by the alternate long and short dash line in FIG. 3 indicates a hole having a diameter of 75 mm or more of the sleeve described above.
As shown in FIG. 3, when the ground contact portion 130 is viewed from the vertical direction, the ground contact portion 130 overlaps with the circle 200. Here, the grounding portion 130 can completely cover and close the circle 200 without protruding from the circle 200. When viewed from the vertical direction, the ground contact portion 130 has the longest distance L1 between the front end surface 131 and the rear end surface 132 (horizontal and front-rear distance) from the diameter (hole diameter) of the circle 200. Is also set to be long. Further, in the ground contact portion 130, the longest distance L2 among the distances (horizontal and width directions) between the inner end surface 133 and the outer end surface 134 when viewed from the vertical direction is the diameter of the circle 200 (hole diameter). ) Is set to be longer. Further, the ground contact portion 130 has the longest distance L3 among the distances (horizontal distances) between the corner portions of the front end surface 131 and the outer end surface 134 and the corner portions of the rear end surface 132 and the inner end surface 133. It is set to be longer than the diameter of the circle 200 (the diameter of the hole). Further, the ground contact portion 130 has the longest distance L4 among the distances (horizontal distances) between the corner portions of the front end surface 131 and the inner end surface 133 and the corner portions of the rear end surface 132 and the outer end surface 134. It is set to be longer than the diameter of the circle 200 (the diameter of the hole).

The longer distance Lh of the distance L3 and the distance L4 corresponds to the longest distance in the horizontal direction of the ground contact portion 130. Therefore, by setting the distance Lh to be larger than at least 75 mm, the ground contact portion 130 is not inserted into the hole having a diameter of 75 mm or more. If the distance Lh is too large, the volume of the ground contact portion 130 becomes large and the manufacturing cost increases. Therefore, the distance Lh can be set to 200 mm or less, and further to 150 mm or less.

Next, the relationship between the mounting portion 110 and the grounding portion 130 will be described.
In the leg seat 100a of the present embodiment, the ground contact portion 130 is positioned so as to be biased outward in the horizontal direction with respect to the mounting portion 110 when viewed from the vertical direction. In other words, the mounting portion 110 is biased inward in the horizontal direction with respect to the grounding portion 130.
Here, with reference to FIGS. 2H and 2G, the state in which the ground contact portion 130 is biased with respect to the mounting portion 110 is compared with reference to the telescopic legs 35 fixed to the mounting space 116.
First, as shown in FIG. 2H, the longest distance from the lower end of the inner plate 40 of the telescopic leg 35 to the inner end surface 133 in the horizontal direction and the width direction is defined as Lin. Further, the longest distance from the lower end of the outer plate 41 of the telescopic leg 35 to the outer end surface 134 in the horizontal direction and the width direction is defined as Lout. At this time, the distance Lin is shorter than the distance Lout. Here, the ratio of the distance Lout to the distance Lin is, for example, 0.2 to 0.8: 1. In this way, the grounding portion 130 is biased outward with respect to the mounting portion 110.
The fact that the grounding portion 130 is positioned laterally in the horizontal direction with respect to the mounting portion 110 means that when the leg seat 100a is mounted on the telescopic leg 35 of the portable workbench 1, the grounding portion 130 of the leg seat 100a is located. It means that it projects outward from the telescopic leg 35.

Further, as shown in FIG. 2G, the longest distance from the lower end of the front side plate 38 of the telescopic leg 35 to the front end surface 131 along the horizontal direction and the front-rear direction is defined as Lf. Further, the longest distance from the lower end of the rear side plate 39 of the telescopic leg 35 to the rear end surface 132 along the horizontal direction and the front-rear direction is defined as Lr. At this time, the ratio of the distance Lf to the distance Lr is, for example, 2 to 4: 3. Further, the distance Lin and the distance Lf are substantially the same. Further, the distance Lf and the distance Lr are shorter than the distance Lout. In this way, the grounding portion 130 is positioned so as not to be biased toward the front side or the rear side with respect to the mounting portion 110.

Next, the rib portion 150 will be described.
The rib portion 150 is a portion for improving the strength of the leg seat 100a. The rib portion 150 is composed of a plurality of ribs 151. The ribs 151 have a plate shape, and adjacent ribs 151 are arranged at intervals. The rib 151 connects the outer peripheral surface of the mounting portion 110 and the surface portion 135 of the grounding portion 130. Specifically, the rib 151 coupled to the front side wall 111 of the mounting portion 110 extends toward the front side, and the rib 151 coupled to the rear side wall 112 of the mounting portion 110 extends toward the rear side. Further, the rib 151 coupled to the inner side wall 113 of the mounting portion 110 extends in the width direction toward the inner end surface 133 side, and the rib 151 coupled to the outer wall 114 of the mounting portion 110 is in the width direction and is outward. It extends toward the end face 134 side. Here, since the distance Lout is longer than the other distances as described above, the rib 151 connecting the outer wall 114 of the mounting portion 110 and the surface portion 135 of the grounding portion 130 is compared with the other ribs. It is formed large.

The leg seat 100a is configured as described above. Since the leg seat 100b has a symmetrical shape with respect to the center line Lc, the description thereof will be omitted. However, the leg seat 100b is not necessarily limited to the case where it is symmetrical, and can be appropriately changed so as to exhibit the function of the leg seat 100b of the present embodiment.

Next, the operation when the leg seat 100a is attached to the portable workbench 1 will be described.
The operator attaches the leg seat 100a and the leg seat 100b having the above-mentioned ground contact portion 130 having a size that cannot be inserted into the hole having a diameter of 75 mm or more to each of the telescopic legs 35 of the portable workbench 1. Therefore, even when the operator places any of the legs 33a and 33b of the portable workbench 1 on the hole having a diameter of 75 mm or more, the leg seat 100a and the leg seat 100b are inserted into the hole. Can be prevented. Specifically, the portable workbench 1 can be stably grounded so that the leg seat 100a or the leg seat 100b is grounded to the floor surface around the hole so as to close the hole.

Further, as described above, since the ground contact portion 130 is located biased to the outside in the horizontal direction with respect to the mounting portion 110, as shown in FIGS. 1B and 1C, the ground contact portion 130 of the leg seat 100a is the telescopic leg 35. Overhangs outward. The grounding portion 130 overhanging to the outside supports the portable workbench 1 so that it does not fall in the width direction when an external force is applied to the portable workbench 1 in the width direction. That is, when the grounding portion 130 is formed to have a size that cannot be inserted into a hole having a predetermined diameter, the grounding portion 130 is projected to the outside of the telescopic legs 35 to prevent the portable workbench 1 from tipping over. Can be planned.

Further, the grounding portion 130 does not project to the front side and the rear side as compared with the projecting portion to the outside with respect to the mounting portion 110. By preventing the grounding portion 130 from projecting to the front side and the rear side in this way, it is possible to prevent the grounding portion 130 from becoming larger than necessary, and it is possible to reduce the manufacturing cost. In particular, since the grounding portion 130 does not project to the front side, the grounding portion 130 can be easily brought close to the work wall when the portable workbench 1 is moved in the front-rear direction, and work around the work wall can be easily performed. be able to. Further, when the portable workbench 1 is easily transported, casters may be attached to the front side or the rear side of the leg seats 100a and 100b, and the grounding portion 130 is prevented from protruding to the front side and the rear side. The casters can be easily attached.

Although the present invention has been described above with respect to the above-described embodiment, the present invention is not limited to the above-mentioned embodiment and can be modified within the scope of the present invention.
In the present embodiment, the portable workbench 1 has been described as the workbench, but the present invention is not limited to this case, and the workbench may be applied to a stepped workbench. Even when applied to a stepped workbench, the configuration of the first main landing gear 31 or the second main landing gear 32 can be applied.
Further, in the present embodiment, the case where the leg seats 100a and 100b are attached to the telescopic legs 35 has been described, but the present invention is not limited to this case. For example, in the case of the legs 33a and 33b that do not have the telescopic legs 35, the leg seats 100a and 100b may be directly attached to the column legs 34.

1: Portable workbench 33a, 33b: Leg 34: Strut leg 35: Telescopic leg 100 (100a, 100b): Leg seat 110: Mounting part 130: Grounding part 150: Rib part

Claims (9)

A pedestal that is attached to multiple legs of the workbench and is in contact with the floor.
The pedestal is
A grounding portion having a size that cannot be inserted into a hole having a diameter of 75 mm or more formed on the floor surface,
It has a mounting portion that is mounted on the legs of the workbench and is located above the grounding portion .
In a state where the grounding portion is grounded to the floor surface,
The mounting part is
The length in the front-back direction is longer than the length in the left- right direction,
The grounding part is
A leg seat characterized by a longer left- right length than a front -back length. The grounding part is
The leg seat according to claim 1, further comprising a size that cannot be inserted into a hole having a diameter of 75 mm or more and a diameter of 150 mm or less. The grounding part is
The leg seat according to claim 1 or 2, further comprising a size that cannot be inserted into a hole having a diameter of 75 mm or more and a diameter of 100 mm or less. When the pedestal is viewed from the vertical direction while the grounding portion is in contact with the floor surface,
The grounding part is
The leg seat according to any one of claims 1 to 3, wherein the leg seat has a shape that closes the hole without a gap. The grounding part is
The pedestal according to any one of claims 1 to 4, wherein the longest length in the horizontal direction is larger than the diameter of the hole. When the grounding portion is viewed from the vertical direction while being grounded to the floor surface,
The mounting part is
The leg seat according to any one of claims 1 to 5, wherein the leg seat is positioned unevenly in the horizontal direction with respect to the ground contact portion. The pedestal according to any one of claims 1 to 6 , wherein the mounting portion and the grounding portion are integrally formed of a flexible material. A workbench that is attached to each of multiple legs and has a footrest that touches the floor.
The pedestal is
A grounding portion having a size that cannot be inserted into a hole having a diameter of 75 mm or more formed on the floor surface,
It has a mounting portion that is mounted on the legs of the workbench and is located above the grounding portion .
In a state where the grounding portion is grounded to the floor surface,
The mounting part is
The length in the front-back direction is longer than the length in the left- right direction,
The grounding part is
A workbench characterized by a longer left- right length than a front -back length. In a state where the legs of the workbench are attached to the attachment portion,
The longest distance from the lower end and the outer end of the leg to the outer end of the grounding portion in the left- right direction is the distance from the lower end and the front end of the leg to the front end of the grounding portion in the forward direction. The work according to claim 8 , wherein the longest distance is longer than the longest distance, or the longest distance from the lower end of the leg portion and the rear end of the ground contact portion toward the rear direction. The stand .

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