JP7212343B2 - Workbench - Google Patents

Description

The present invention relates to workbenches.

A workbench is used for work at a construction site or the like. As an example of a workbench, Patent Literature 1 discloses a workbench in which a top plate is bridged between a pair of ladder-shaped main legs, handrail posts erected at four corners of the top plate, and the handrail posts. Transportable work comprising handrail bars arranged at opposing positions along the longitudinal direction of the top plate and handrail bars for the lateral direction rotatably pivoted on the upper end of the handrail bars for the longitudinal direction. A table is disclosed.

JP 2008-255586 A Japanese Patent Application Laid-Open No. 2016-223106

In the portable workbench disclosed in Patent Document 1, a pair of ladder-shaped main legs spread out in a V-shape at an appropriate angle that takes into account the ease of ascending and descending. Support the top plate so that it is wider.
However, in the configuration in which the pair of ladder-shaped main legs spread out in an inverted V shape, it is necessary to secure a large space for installing the workbench. Also, when setting up the workbench, there may be situations where one of the four sides of the table top on which the main legs are arranged should be close to the wall. In the configuration, the main landing gear hits the wall, creating a wide gap between the roof and the wall.

Therefore, only one of the pair of main landing gears is ladder-shaped, and the other is not ladder-shaped and is prohibited from going up and down. It is conceivable to have a configuration in which the top plate is supported by As a result, it is not necessary to secure a large space for installing the workbench, compared to a workbench in which a pair of main legs spread out at the same angle in a V-shape. Also, even in a situation where one of the four sides of the top board where the main leg is installed should be closer to the wall, if the other side on the main leg side is brought closer to the wall, the distance between the top board and the wall can be reduced. It can be shortened so that there is no wide gap between the top plate and the wall.

Here, when the space above the top plate is surrounded by the longitudinal bar and the short bar, it is required to adopt a structure suitable for the main leg side which does not function as a ladder. For example, if the configuration of the handrail bar and the handrail bar for the lateral direction in Patent Document 1 is applied as it is, there is a concern that it will be difficult to switch between the use state and the stored state on the main leg side that does not function as a ladder.

The present invention has been made in view of the above points. In the case where the space above the top plate is surrounded by the long and short bars, the main landing gear, which does not function as a ladder, is used and stored. The purpose is to make it easier to switch between

The workbench of the present invention comprises a rectangular top plate having a pair of long sides and a pair of short sides, and a rectangular top plate that is arranged on one short side of the pair of short sides and prevents a worker from going up and down. and a ladder-like second main leg, which is arranged on the other short side of the pair of short sides and used for lifting and lowering the operator. A pair of longitudinal bars arranged above the pair of long sides, a first short bar arranged above one of the short sides, and a first short bar arranged above the other short side The space above the top plate is surrounded by a second short bar and a pair of first posts erected near both ends of the one short side, and near both ends of the other short side a pair of erected second struts, wherein the pair of first struts and the first short bar are integrated in a gate shape, and the second short bar is the Between the second struts or between the longitudinal bars so as to be openable and closable , each of the longitudinal bars is composed of a set of divided bodies divided at predetermined positions in the longitudinal direction, and the set of divided bodies Among them, the divided body on the side of the first strut is rotatably supported by the first strut and can be accommodated along the first strut .

According to the present invention, when the space above the top plate is surrounded by the longitudinal bar and the short bar, it is possible to easily switch between the use state and the stowed state on the main leg side that does not function as a ladder.

It is a front view which shows the use condition of the portable workbench which concerns on embodiment. It is a left view which shows the use condition of the portable workbench which concerns on embodiment. It is a right view which shows the use condition of the portable workbench which concerns on embodiment. It is a front view which shows the accommodation state of the portable workbench which concerns on embodiment. It is a front view which shows the open-leg state of the portable workbench which concerns on embodiment. FIG. 4 is a perspective view showing the configuration of a second short bar of the portable workbench according to the embodiment; It is a figure for demonstrating the support structure of the 1st support|pillar of the portable workbench which concerns on embodiment.

Preferred embodiments of the present invention will now be described with reference to the accompanying drawings.
FIG. 1 is a front view, FIG. 2 is a left side view, and FIG. 3 is a right side view showing how a portable workbench 1 according to the embodiment is used. In addition, in FIGS. 2 and 3, illustration of some members that should be visible on the back side of the paper is omitted for ease of viewing. Moreover, FIG. 4 is a front view showing the stored state of the portable workbench 1 according to the embodiment, and FIG. 5 is a front view showing the open-legged state. In the present application, directions such as up and down, left and right refer to directions based on the front view shown in FIG.
In the portable workbench 1 , a top plate 2 is bridged between the first main leg 3 and the second main leg 4 . The top plate 2 is configured in a rectangular shape having a pair of long sides (so-called girder side) 2a and a pair of short sides (so-called gable side) 2b. are arranged respectively.

As shown in FIGS. 1 and 2, the first main leg 3 includes a pair of supporting legs 3a and two upper and lower reinforcing members 3b installed therebetween. The upper part of a pair of support legs 3a is rotatably attached to the top plate 2, and the first main leg 3 can be folded toward the lower surface of the top plate 2 and accommodated (see FIG. 4). A bendable stay 5 is interposed between the lower surface of the top plate 2 and the first main leg 3 . Note that the lower portions of the pair of supporting legs 3a are extendable. Although the first main leg 3 thus constructed supports the top plate 2, it does not function as a ladder, and an operator is prohibited from climbing from the first main leg 3 side.

As shown in FIGS. 1 and 3, the second main leg 4 has a pair of support legs 4a and a plurality of tread bars 4b installed therebetween, and is configured in a ladder shape. The upper parts of a pair of support legs 4a are rotatably attached to the top plate 2, and the second main leg 4 can be folded toward the lower surface of the top plate 2 and accommodated (see FIG. 4). A bendable stay 6 is interposed between the lower surface of the top plate 2 and the second main leg 4 . In addition, the lower part of a pair of supporting leg 4a is extendable. The second main leg 4 thus configured supports the top plate 2 and functions as a ladder, and is used by the operator to ascend and descend the top plate 2 .

The second main leg 4 is arranged so as to separate from the top plate 2 side toward the bottom, and supports the top plate 2 at an appropriate angle in consideration of ease of elevation. On the other hand, the first main leg 3 supports the top plate 2 at a steeper angle (closer to the vertical) than the angle at which the second main leg 4 supports the top plate 2 .
The top plate 2 and the first and second main legs 3 and 4, which are constructed as described above, are made of, for example, an aluminum alloy, and weight reduction is achieved while ensuring necessary strength.

Next, a configuration in which the space above the top plate 2 is surrounded by the pair of longitudinal bars 7 and the first and second short bars 8 and 9 will be described.
On the side of the first main leg 3, support metal fittings 10 are provided on the side surfaces of both long sides 2a of the top plate 2, and the support metal fittings 10 rotatably support the first struts 11 (arrows in FIG. 1). see _R1 ). As a result, a pair of first supports 11 are erected near both ends of the short side 2b. The first post 11 is movable between a usage state in which it stands on the top plate 2 and a storage state in which it is laid down.

The first strut 11 is composed of, for example, an aluminum alloy tubular body having a substantially rectangular cross section. In this embodiment, the first strut 11 has a shape that bends at the bottom (near the base). More specifically, the first support 11 includes a long column member 11a, a short base end member 11c supported by the support fitting 10, and an oblique column member 11a and a base end member 11c which are parallel to each other. and a connecting member 11b that extends to connect the two. As shown in FIG. 4, in the housed state where the first support 11 is laid on the top plate 2, the base end member 11c is positioned adjacent to the long side 2a. The column member 11a is located above the base end member 11c, and is located at approximately the same height as the upper surface of the top plate 2 in a front view.

A first short bar 8 is installed between the upper ends of the pair of first struts 11 . The first short bar 8 is made of, for example, a round pipe made of aluminum alloy, stainless steel, or the like. Since the operator is prohibited from ascending and descending on the side of the first main leg 3, there is no need to open and close the first short bar 8, and the first short bar 8 is supported on the upper end of the first strut 11. It is fixed via the member 12 . That is, the pair of first struts 11 and the first short bar 8 are integrated in a gate shape.

Here, each longitudinal bar 7 is composed of a pair of divided bodies 7a and 7b divided at predetermined positions in its longitudinal direction. The divided bodies 7a and 7b can be connected via a connecting structure, or can be disconnected. In the present embodiment, the divided bodies 7a and 7b are configured by a resin tubular body having a substantially rectangular cross section. , to be inserted into and pulled out from the divided body 7b. The longitudinal bar 7 is colored yellow or orange, for example, so that it can be easily visually recognized.
A divided body 7a constituting the longitudinal bar 7 is rotatably supported on the upper end of the first support 11 via a connecting metal fitting 15 (see arrow _R2 in FIG. 1), and is shown in FIGS. , so that it can be folded and accommodated along the first strut 11 . In addition, it is preferable to provide, for example, a pair of hook-and-loop fasteners on the surfaces of the divided body 7a and the first strut 11 facing each other in the accommodated state so that the accommodated state can be maintained.

As described above, on the first main leg 3 side, the divided body 7a can be folded and accommodated along the first strut 11 . Then, with the split body 7a folded and accommodated, the pair of first support columns 11 and the first short bar 8 integrally formed in the gate shape are accommodated so as to fall toward the upper surface of the top plate 2. be able to. At this time, as shown in FIGS. 4 and 5, the first short bar 8 is just placed on the top surface of the top plate 2 .

On the other hand, on the second main leg 4 side, support metal fittings 16 are provided on the upper portions of both support legs 4a, and the support metal fittings 16 rotatably support the second struts 17 (as indicated by the arrow R3 in FIG. ₁ ). reference). As a result, a pair of second supports 17 are erected near both ends of the short side 2b. The second strut 17 is movable between a use state in which it stands against the top plate 2 and a stored state in which it is along the second main leg 4 .

The second strut 17 is composed of, for example, an aluminum alloy tubular body having a substantially rectangular cross section. In this embodiment, the second strut 17 has a shape that extends substantially straight instead of bending at the bottom like the first strut 11 .
Since the operator ascends and descends on the top plate 2 on the second main leg 4 side, it is necessary to open and close the second short bar 9 so that the operator can pass between the second pillars 17 . Although the structure of the second short bar 9 in this embodiment will be described later, the second short bar 9 is installed between the second struts 17 or between the long bars 7 (divided bodies 7b) so as to be openable and closable. If so, the configuration is not limited.
The divided body 7b constituting the longitudinal bar 7 is rotatably supported by the upper end of the second strut 17 via the connecting fitting 18 (see arrow _R4 in FIG. 1), and is shown in FIGS. , so that it can be folded and accommodated along the second strut 17 . In addition, it is preferable to provide, for example, a pair of hook-and-loop fasteners on the surfaces of the divided body 7b and the second strut 17 facing each other in the accommodated state so that the accommodated state can be maintained.

As an example of the configuration of the second short bar 9, the configuration proposed by the present applicant in Patent Document 2 can be adopted.
As shown in FIG. 6, a second short bar 9 is installed between the divided bodies 7b so as to be openable and closable. The second short bar 9 is made of, for example, a metal rod such as an aluminum alloy or stainless steel.
In one of the divided bodies 7b on both sides (the left divided body 7b in the example of FIG. 6), the surface 7c that becomes the upper surface when in use (the state where it is horizontally connected to the divided body 7a), At the near position, the base end portion 9a of the second short bar 9 is rotatably supported.
In this manner, the base end portion 9a of the second short bar 9 is rotatably supported by the surface 7c of one divided body 7b (see arrow R in FIG. 6). Thereby, the second short bar 9 can be accommodated along one split body 7b. In addition, the second short bar 9 can be rotated toward the other divided body 7b at the opposite position to span. By adopting a configuration in which the tip portion 9b of the second short bar 9 is engaged with the other divided body 7b, the closed state in which the second short bar 9 is bridged can be maintained.
In addition, in Patent Document 2, not only when the divided bodies 7b on both sides are in use, but also when both or part of them are in the stored state (the state folded and stored along the second support column 17), The second short bar 9 can be rotated toward the other divided body 7b at the opposing position and locked thereto, but a detailed description thereof will be omitted here.

Next, referring to FIG. 7, the support structure of the first strut 11 will be described. As described above, the first strut 11 is rotatably supported by the support fitting 10 .
The support metal fitting 10 has a pair of supporting surfaces 10a that face each other so as to sandwich the lower part of the first support 11, and the first support 11 is rotatably supported by a shaft 19 installed between the supporting surfaces 10a. be done.

Here, an elongated hole 20 extending in the extending direction is formed in the base end portion of the first support 11 , and the shaft 19 is inserted through the elongated hole 20 . Thereby, the first strut 11 is movable in its extension direction with respect to the axis 19 in the area of the slot 20 .

Moreover, the support surface 10a of the support metal fitting 10 has an arc-shaped guide side 10b, and cutouts 21 and 22 are formed. Further, a pin 23 is protruded above the elongated hole 20 on the support surface 10a side of the first support 11 and can be engaged with the cutouts 21 and 22 . The pin 23 is arranged so as to pass through both side surfaces of the first support 11 on the support surface 10a side. The notch 21 corresponds to the usage state in which the first column 11 is erected against the top plate, and the notch 22 corresponds to the accommodation state in which the first column 11 is laid down on the top plate.

A coil spring 24 is stretched between the shaft 19 and the pin 23 inside the first strut 11 . As shown in FIG. 7, when the post 11 is erected, the tension of the coil spring 24 causes the pin 23 to engage with the notch 21 and the upper end of the long hole 20 to come into contact with the shaft 19. . When the first strut 11 is pulled up from this state, the first strut 11 moves upward against the tension of the coil spring 24 through the long hole 20 and the pin 23 is disengaged from the notch 21 . When the first strut 11 is tilted toward the upper surface of the top plate 2, the pin 23 detached from the notch 21 moves along the guide side 10b as shown by the phantom line in FIG. , the pin 23 is engaged with the notch 22, so that the pair of the first struts 11 and the first short bar 8, which are integrated in a portal shape, can be put into the accommodated state.

In the state of use in which the first support 11 is erected, the first support 11 is firmly held, for example, even when a worker standing on the top plate 2 touches the bars 7, 8 or the first support 11, It is preferable that the pin 23 cannot be easily removed from the notch 21 . On the other hand, when changing from the housed state to the used state, it is preferable to move the first strut 11 so as to raise it with a light force. Therefore, the notch 21 is made relatively deep, while the notch 22 is made relatively shallow and smoothly connected to the guide side 10b.

In the portable workbench 1 constructed as described above, the first and second main legs 3 and 4 are folded and stored on the lower surface side of the top plate 2 in the stored state, as shown in FIG.
In addition, in the stored state, on the side of the first main leg 3, the divided body 7a is folded and stored along the first strut 11. As shown in FIG. In this state, the pair of first struts 11 and the first short bar 8 that are integrated in the gate shape are accommodated in such a manner that the first short bar 8 rests on the upper surface of the top plate 2 .
In addition, in the stowed state, the second short bar 9 is stowed along the split body 7b on the second main leg 4 side. Also, the divided body 7b is folded and accommodated along the second strut 12. As shown in FIG. In that state, the second strut 17 is accommodated along the second main leg 4 .

4, the first and second main legs 3 and 4 are rotated to be opened, and the main legs 3 and 4 are moved by the stays 5 and 6 as shown in FIG. keep the legs open.
Then, when the worker climbs the ladder-shaped second main leg 4 , the operator moves the second support 17 so as to stand up against the top board 2 . As a result, the user can get on the top plate 2 by using the second strut 17 as a handhold bar.
Also, a worker on the top plate 2 grasps the first short bar 8 placed on the upper surface of the top plate 2 and moves the pair of first support columns 11 and the first short bars integrated into a gate shape. Raise bar 8. Since the first short bar 8 is a round pipe, it can be easily grasped even when placed on the upper surface of the top plate 2. - 特許庁When the pair of struts 11 and the first short bar 8, which are integrated in a portal shape, are raised, the pin 23 moves out of the notch 22 and moves along the guide side 10b, as shown in FIG. 23 is engaged with the notch 21 so that the first strut 11 can be placed in an upright use state.
After that, the operator can connect the divided bodies 7a and 7b of the long bar 7 on both sides and bridge the second short bar 9 to make it ready for use.

In such a state of use, the pair of longitudinal bars 7 are arranged above the pair of long sides 2a, and the first and second short bars 8, 9 are arranged above the short sides 2b. surrounds the upper space of As a result, when the upper half of the worker's body approaches one of the bars 7, 8, and 9 while working while standing on the tabletop 2, the worker can stand at a position close to the peripheral edge of the tabletop 2 without checking his/her feet. You can sense that you are

In addition, although it was explained that the operator on the top plate 2 raises the pair of the first pillars 11 and the first short bar 8 that are integrated in the gate shape, this work is performed on the first pillars 11. You can do it within your reach. For example, as shown in FIG. 5, even when the first and second main legs 3 and 4 are open, the first support column 11 can be reached from the ground. The pair of first struts 11 and the first short bar 8 can be moved so as to stand up. After raising the pair of first struts 11 and the first short bar 8 integrated in the gate shape, the ladder-shaped second main leg 4 is raised to get on the top board 2. may

In the portable workbench 1 described above, the first main leg 3 supports the top plate 2 at a steeper angle than the angle at which the second main leg 4 supports the top plate 2 . As a result, it is not necessary to secure a large space for installing the workbench, compared to a workbench in which a pair of main legs spread out at the same angle in a V-shape. Also, even in a situation where it is desired to bring the short side 2b of the top plate 2 closer to the wall, if the short side 2b on the side of the first main leg 3 is brought closer to the wall, the distance between the top plate 2 and the wall can be shortened. A wide gap can be prevented between the top plate 2 and the wall. Thus, it is possible to provide a workbench that is easy to install.

In addition, in the configuration in which the space above the top plate 2 is surrounded by the pair of longitudinal bars 7 and the first and second short bars 8 and 9, the first main leg 3 side that does not function as a ladder and the second main leg 3 side that functions as a ladder A configuration suitable for each of the main landing gear 4 side can be adopted.
Specifically, the operator is prohibited from ascending and descending on the side of the first main leg 3, and in view of the fact that there is no need to open and close the first short bar 8, the pair of first struts 11 and the second 1 and the short bar 8 are integrated in a gate shape. As a result, it can be easily put into the use state or the stowed state without any trouble. In addition, the pair of first support columns 11 and the first short bar 8 that are integrated in the gate shape are accommodated in such a manner that they are tilted toward the upper surface of the top plate 2, so that the top plate 2 It is easier to launch from the ground.
On the other hand, on the side of the second main leg 4, considering that the operator ascends and descends on the top plate 2, the second strut 17 is tilted in the direction away from the top plate 2, and is attached to the second main leg 4. It is possible to accommodate along. As a result, when the worker climbs the ladder-shaped second main leg 4, the operator can move the second support 17 to stand upright and use the second support 17 as a handhold bar.

Although the present invention has been described along with the embodiments, the embodiments merely show specific examples for carrying out the present invention, and the technical scope of the present invention should not be construed in a limited manner. It should not be. That is, the present invention can be embodied in various forms without departing from its technical concept or main features.
The shape and structure of each part described in the above embodiment are merely examples, and are not limited to these. In the above-described embodiment, the pair of longitudinal bars 7 are directly supported by the first strut 11 and the second strut 17, but the present invention is not limited to this. For example, the divided body 7a of the longitudinal bar 7 and the first short bar 8 are unitized so as to have a pair of sheath tubes opening downward, and the pair of sheath tubes are put on the pair of first struts 11. It is good also as a structure which mounts|wears. Similarly, the divided body 7b of the longitudinal bar 7 and the second short bar 9 are unitized so as to have a pair of sheath tubes opening downward, and the pair of sheath tubes are put on the pair of second struts 17. It is good also as a structure which it mounts|wears.

1: portable workbench, 2: top plate, 2a: long side, 2b: short side, 3: first main leg, 4: second main leg, 7: longitudinal bar, 7a, 7b: split body, 8: first short bar, 9: second short bar, 10, 16: support bracket, 11: first strut, 17: second strut

Claims (4)

a rectangular top plate having a pair of long sides and a pair of short sides;
a first main leg disposed on one short side of the pair of short sides and prohibited from being lifted by a worker;
A workbench comprising a second ladder-shaped main leg used for lifting and lowering a worker, the second main leg being disposed on the other short side of the pair of short sides,
A pair of long bars arranged above the pair of long sides, a first short bar arranged above the one short side, and a second bar arranged above the other short side. The upper space of the top plate is surrounded by a short bar,
a pair of first supports erected near both ends of the one short side;
and a pair of second struts erected near both ends of the other short side,
The pair of first struts and the first short bar are integrated in a gate shape,
The second short bars are openable and closable between the second struts or between the longitudinal bars ,
Each of the longitudinal bars is composed of a set of divided bodies divided at predetermined positions in the longitudinal direction,
Of the set of divided bodies, the divided body on the side of the first support is rotatably supported by the first support and can be accommodated along the first support. Workbench to do. the first strut is rotatably supported;
The pair of first struts and the first short bar integrated with the gate shape can be accommodated so as to fall toward the upper surface of the top plate. Workbench as described. Of the set of divided bodies, the divided body on the side of the second support is rotatably supported by the second support and can be accommodated along the second support. The workbench according to claim 1 or 2 . 4. The apparatus according to claim 1 , wherein said second strut is rotatably supported, and can be accommodated along said second main leg by tilting in a direction away from said top plate. A workbench according to any one of the preceding claims.

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