JP7429074B2 - Workbench - Google Patents

Description

The present invention relates to a workbench.

A workbench is used for work at a construction site or the like. As an example of a workbench, Patent Document 1 describes a workbench in which a top plate is spanned between a pair of ladder-shaped main legs, and includes handrail supports that are erected at the four corners of the top plate, and the handrail supports. A portable work machine comprising handrail bars disposed at opposing positions along the longitudinal direction of a top plate, and a short handrail bar rotatably pivoted to the upper end of the longitudinal handrail bar. The table is exposed.

Japanese Patent Application Publication No. 2008-255586 JP2016-223106A

In the portable workbench of Patent Document 1, a pair of ladder-shaped main legs are spread out in a V-shape at an appropriate angle taking into consideration ease of raising and lowering, that is, the distance between the main legs gradually widens toward the bottom. Support the top plate by making it wider.
However, in a configuration in which a pair of ladder-shaped main legs spread out in a V-shape, it is necessary to provide a large space for installing a workbench. Also, when setting up a workbench, there may be a situation where you want the side where the main legs are arranged of the four sides of the top plate to be closer to the wall, but the pair of ladder-shaped main legs spread out in a V-shape. In this configuration, the main landing gear hits the wall, creating a wide gap between the top plate and the wall.

Therefore, only one of the pair of main legs is made into a ladder shape, and the other one is not made into a ladder shape and is prohibited from going up and down. Compared to the angle at which one main leg supports the top plate, the other main leg is at a steep angle. It is conceivable to support the top plate with As a result, compared to a workbench where the pair of main legs are spread out at the same angle in a V-shape, there is no need to take up a large space to install the workbench. Also, even if you want the side of the top plate where the main legs are placed closer to the wall, you can reduce the distance between the top plate and the wall by bringing the other side of the main legs closer to the wall. It can be made shorter to avoid creating a wide gap between the top plate and the wall.

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

An object of the present invention is to provide a workbench with improved accommodation.

The workbench of the present invention includes: a rectangular top plate having a pair of long sides and a pair of short sides; a first main leg disposed on one of the pair of short sides; A workbench equipped with a ladder-shaped second main leg disposed on the other short side of the pair of short sides , the pair being erected near both ends of the one short side. and a pair of second pillars erected near both ends of the other short side, using the pair of first pillars and the pair of second pillars, a pair of longitudinal bars disposed above the pair of long sides; a first short bar disposed above the one short side; and a second short bar disposed above the other short side. A short side bar surrounds a space above the top plate, and the pair of first supports and the first short side bar are integrated in a gate shape, and the first support is connected to the top plate. A column extending vertically at a position close to one short side, a base end disposed at a position closer to the other short side than the column, and a connecting portion connecting the column and the base end. The base end portion is rotatably supported on the long side side surface of the top plate, and the pair of first supports and the first short bar maintain a gate shape. It is characterized in that the first short bar can be accommodated in such a manner that it falls down toward the top surface of the top plate until it reaches the top surface, so that it rests on the top surface of the top plate .

According to the present invention, it is possible to provide a workbench with improved accommodation.

FIG. 2 is a front view showing a state in which the portable workbench according to the embodiment is used. FIG. 2 is a left side view showing a state in which the portable workbench according to the embodiment is used. FIG. 2 is a right side view showing a state in which the portable workbench according to the embodiment is used. FIG. 2 is a front view showing the accommodated state of the portable workbench according to the embodiment. FIG. 2 is a front view showing the portable workbench according to the embodiment in an open state. FIG. 3 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 explaining the support structure of the 1st pillar of the portable workbench concerning an embodiment.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a front view showing how a portable workbench 1 according to the embodiment is used, FIG. 2 is a left side view, and FIG. 3 is a right side view. Note that in FIGS. 2 and 3, some members that should be visible on the back side of the page are omitted for ease of viewing. Further, FIG. 4 is a front view showing the portable workbench 1 according to the embodiment in a housed state, and FIG. 5 is a front view showing the portable workbench 1 in an open state. In this application, the vertical, horizontal, and horizontal directions refer to directions based on the front view shown in FIG. 1.
In the portable workbench 1, a top plate 2 is spanned between a first main leg 3 and a second main leg 4. The top plate 2 has a rectangular shape with a pair of long sides (so-called girder side sides) 2a and a pair of short sides (so-called end side sides) 2b, and the main legs 3 and 4 are arranged on the pair of short sides 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 between them. The upper portions of the pair of supporting legs 3a are 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 expandable and retractable. The first main leg 3 thus configured supports the top plate 2, but does not function as a ladder, and the worker is prohibited from going up and down from the first main leg 3 side.

As shown in FIGS. 1 and 3, the second main leg 4 includes a pair of supporting legs 4a and a plurality of step bars 4b installed between them, and is configured in a ladder shape. The upper portions of the pair of supporting legs 4a are rotatably attached to the top plate 2, and the second main legs 4 can be folded and accommodated toward the bottom surface of the top plate 2 (see FIG. 4). A bendable stay 6 is interposed between the lower surface of the top plate 2 and the second main leg 4. Note that the lower portions of the pair of supporting legs 4a are expandable and retractable. The second main leg 4 thus configured supports the top plate 2 and also functions as a ladder, and is used by an operator to ascend and descend to the top plate 2.

The second main leg 4 is disposed so as to move away from the top plate 2 toward the bottom, and supports the top plate 2 at an appropriate angle in consideration of ease of raising and lowering. On the other hand, the first main leg 3 supports the top plate 2 at a steeper angle (nearly vertical angle) 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 as described above are made of, for example, an aluminum alloy, and are lightweight while ensuring necessary strength.

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

The first support column 11 is constituted by, for example, an aluminum alloy tube having a substantially rectangular cross section. In this embodiment, the first support 11 has a shape that is bent at the lower part (near the root). More specifically, the first support 11 includes a long pillar member 11a, a short proximal member 11c supported by the support fitting 10, and an oblique support member 11c with respect to the parallel pillar member 11a and the proximal member 11c. and a connecting member 11b extending to connect the two. As shown in FIG. 4, in the accommodated state in which the first support column 11 is laid down on the top plate 2, the base end member 11c is located adjacent to the long side 2a. The column member 11a is located above the base member 11c, and is located at approximately the same height as the top surface of the top plate 2 when viewed from the front.

A first short bar 8 is installed between the upper ends of the pair of first support columns 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 worker is prohibited from going up and down on the first main landing gear 3 side, there is no need to open and close the first short bar 8, and the first short bar 8 is supported at the upper end of the first support column 11. It is fixed via a member 12. That is, the pair of first support columns 11 and the first short bar 8 are integrated into a gate shape.

Here, each longitudinal bar 7 is constituted by a pair of divided bodies 7a and 7b divided at predetermined positions in the longitudinal direction. The divided bodies 7a and 7b can be connected or disconnected via a connecting structure. In this embodiment, the divided bodies 7a and 7b are constituted by resin tubes having a substantially rectangular cross section, and by sliding the slider 13, the engaging member 14 can be moved in and out from the inside of the divided body 7a. , it has a connection structure that can be inserted into and pulled out from the divided body 7b. The longitudinal bar 7 is colored, for example, yellow or orange for easy visibility.
The divided body 7a constituting the longitudinal bar 7 is rotatably supported at the upper end of the first column 11 via a connecting fitting 15 (see arrow _R2 in FIG. 1), and is shown in FIGS. 4 and 5. Thus, it can be folded and stored along the first support column 11. In addition, it is preferable to provide a pair of hook-and-loop fasteners, for example, on surfaces of the divided body 7a and the first support 11 that face each other in the housed state, so that the housed 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 support column 11. Then, with the divided body 7a folded and accommodated, the pair of first columns 11 and the first short bar 8, which are integrated into a portal shape, are folded down toward the top surface of the top plate 2, and accommodated. be able to. At this time, as shown in FIGS. 4 and 5, the first short bar 8 is placed exactly on the top surface of the top plate 2.

On the other hand, on the second main leg 4 side, a support metal fitting 16 is provided at the upper part of both supporting legs 4a, and a second support column 17 is rotatably supported by the support metal fitting 16 (see arrow R ₃ 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 support column 17 is movable between a used state in which it stands up against the top plate 2 and a stored state in which it is placed along the second main leg 4.

The second support column 17 is constituted by, for example, an aluminum alloy tube having a substantially rectangular cross section. In this embodiment, the second support column 17 does not bend at the bottom like the first support column 11, but has a shape that extends substantially straight.
Since the worker ascends and descends from 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 worker can pass between the second columns 17. The configuration of the second short bar 9 in this embodiment will be described later, but the second short bar 9 is constructed so as to be openable and closable between the second supports 17 or between the long bars 7 (divided bodies 7b). If so, the configuration is not limited.
The divided body 7b constituting the longitudinal bar 7 is rotatably supported at the upper end of the second column 17 via a connecting fitting 18 (see arrow _R4 in FIG. 1), and is shown in FIGS. 4 and 5. Thus, it can be folded and stored along the second support column 17. In addition, it is preferable to provide a pair of hook-and-loop fasteners, for example, on surfaces of the divided body 7b and the second support 17 that face each other in the housed state, so that the housed 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 made of aluminum alloy, stainless steel, or the like.
In one of the divided bodies 7b on both sides (the left divided body 7b in the example shown in FIG. 6), a support 17 is attached to the surface 7c that becomes the upper surface when it is in the use state (horizontal and connected to the divided body 7a). A base end 9a of the second short bar 9 is rotatably supported at a nearby position.
In this way, the base end 9a of the second short bar 9 is rotatably supported on the surface 7c of one of the divided bodies 7b (see arrow R in FIG. 6). Thereby, the second short bar 9 can be accommodated along one of the divided bodies 7b. Further, the second short bar 9 can be rotated toward the other divided body 7b at the opposing position to span the bridge. By configuring the tip portion 9b of the second short bar 9 to be locked to 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 the use state, but also when both or part of them are in the housed state (the state where they are folded and housed along the second support column 17), Although the second short bar 9 can be rotated and locked toward the other divided body 7b at the opposing position, a detailed explanation thereof will be omitted here.

Next, the support structure of the first support column 11 will be explained with reference to FIG. As described above, the first support 11 is rotatably supported by the support fitting 10.
The support fitting 10 is configured such that the lower part of the first support column 11 is sandwiched between a pair of mutually opposing support surfaces 10a, and the first support column 11 is rotatably supported by a shaft 19 installed between the support surfaces 10a. be done.

Here, a long hole 20 extending in the extending direction is formed at the base end of the first support 11, and the shaft 19 is inserted through the long hole 20. Thereby, the first support 11 is movable in the extending direction of the first support 11 with respect to the shaft 19 within the range of the elongated hole 20 .

Further, the support surface 10a of the support fitting 10 has an arc-shaped guide side 10b, and cutouts 21 and 22 are formed therein. Further, a pin 23 is provided in a protruding manner above the elongated hole 20 on the surface of the first support 11 on the side of the support surface 10a, and can be engaged with the notches 21 and 22. The pin 23 is disposed so as to pass through both side surfaces of the first support column 11 on the support surface 10a side. The cutout 21 corresponds to a usage state in which the first support 11 stands up against the top plate, and the cutout 22 corresponds to a storage state in which the first support 11 lies down against the top plate.

A coil spring 24 is stretched between the shaft 19 and the pin 23 inside the first support column 11 . As shown in FIG. 7, when the support 11 is in use in an upright position, the tension of the coil spring 24 causes the pin 23 to engage the notch 21 and the upper end of the elongated hole 20 to come into contact with the shaft 19. . When the first support 11 is pulled up from this state, the first support 11 moves upward through the elongated hole 20 against the tension of the coil spring 24, and the pin 23 is removed from the notch 21. Then, when the first support 11 is moved so as to be tilted toward the top surface of the top plate 2, the pin 23 that has come off from the notch 21 moves along the guide side 10b, as shown by the imaginary line in FIG. , the pin 23 is engaged with the notch 22, so that the pair of first support columns 11 and the first short bar 8, which are integrated into a portal shape, can be placed in a housed state.

In addition, when the first support 11 is used in an upright position, the first support 11 is firmly held, and even if, for example, a worker standing on the top plate 2 touches the bars 7, 8 or the first support 11, Preferably, the pin 23 is not easily removed from the notch 21. On the other hand, when changing from the housed state to the used state, it is preferable to be able to move the first support 11 upright with a light force. Therefore, while the notch 21 is made relatively deep, 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 accommodated on the lower surface side of the top plate 2 in the accommodated state, as shown in FIG.
Furthermore, in the accommodated state, the divided body 7a is folded and accommodated along the first support column 11 on the first main leg 3 side. In this state, the pair of first columns 11 and first short bars 8 that are integrated into a gate shape are accommodated in such a manner that the first short bars 8 rest on the top surface of the top plate 2 .
Further, in the accommodated state, the second short bar 9 is accommodated on the second main leg 4 side along the divided body 7b. Further, the divided body 7b is folded and accommodated along the second support column 12. In this state, the second support column 17 is housed along the second main leg 4.

When changing from the storage state shown in FIG. 4 to the use state, as shown in FIG. Try to maintain the open leg position.
Then, when the worker ascends the ladder-shaped second main leg 4, the worker moves the second support 17 to stand up, so that the second support 17 stands up against the top plate 2. This allows the user to ride on the top plate 2 using the second support 17 as a handhold.
In addition, the worker sitting on the top plate 2 grasps the first short bar 8 placed on the top surface of the top plate 2 and supports the pair of first columns 11 and the first short bar integrated into the gate shape. Launch bar 8. Since the first short bar 8 is a round pipe, it is easy to grasp even when it rests on the top surface of the top plate 2. When the pair of pillars 11 and the first short bar 8, which are integrated into a portal shape, are raised, the pin 23 comes off 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 support column 11 can be placed in an upright state of use.
Thereafter, the operator can put it into use by connecting the divided bodies 7a and 7b of the longitudinal bar 7 on both sides and spanning the second short bar 9 over it.

In this state of use, the pair of longitudinal bars 7 is arranged above the pair of long sides 2a, the first and second short bars 8 and 9 are arranged above the short side 2b, and the top plate 2 It becomes a state that surrounds the space above. As a result, when a worker standing on the top plate 2 approaches one of the bars 7, 8, or 9 with his or her upper body, the worker stands near the periphery of the top plate 2 without checking his/her feet. can sense that it is happening.

It has been explained that the worker sitting on the top plate 2 stands up the pair of first columns 11 and the first short bar 8 which are integrated into a gate shape. Just do it within your reach. For example, as shown in FIG. 5, even when the first and second main legs 3 and 4 are in the open state, the first support column 11 can be reached from the ground, so that workers on the ground can reach it from the ground. The pair of first supports 11 and the first short bar 8 can be moved to stand up. After the pair of first pillars 11 and the first short bar 8, which are integrated into a portal shape, are erected, the person climbs up the ladder-like second main leg 4 and stands on the top plate 2. You can.

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, compared to a workbench where the pair of main legs are spread out at the same angle in a V-shape, there is no need to take up a large space to install the workbench. Also, even in a situation where you want to bring the short side 2b of the top plate 2 closer to the wall, if you bring the short side 2b on the first main landing gear 3 side closer to the wall, you can shorten the distance between the top plate 2 and the wall. It is possible to prevent a wide gap from forming between the top plate 2 and the wall. In this way, 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 a pair of longitudinal bars 7 and 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. and the main landing gear 4 side, configurations suitable for each can be adopted.
Specifically, in view of the fact that the operator is prohibited from going up and down on the first main landing gear 3 side and there is no need to open and close the first short bar 8, the pair of first support columns 11 and the 1 and the short bar 8 are integrated into a gate shape. As a result, it is possible to easily put the device into a used state or a stored state without any trouble. Moreover, by having a configuration in which the pair of first columns 11 and the first short bars 8 that are integrated into a gate shape are housed so as to be tilted toward the top surface of the top plate 2, the top plate 2 is It is also easier to start up from the ground.
On the other hand, in view of the fact that the worker ascends and descends from the top plate 2 on the second main landing gear 4 side, the second support 17 is placed on the second main landing gear 4 so as to fall in the direction away from the top board 2. It can be accommodated along the line. Thereby, when climbing up the ladder-shaped second main leg 4, the worker can move the second support 17 to stand up, and use the second support 17 as a handhold.

Although the present invention has been described above along with the embodiments, the embodiments are merely examples of implementation of the present invention, and the technical scope of the present invention should not be interpreted to be limited by these embodiments. It is something that cannot happen. That is, the present invention can be implemented in various forms without departing from its technical idea or main features.
The shapes and structures of each part described in the embodiments described above are merely examples, and the present invention is not limited thereto. In the embodiment described above, the first support 11 and the second support 17 directly support the pair of longitudinal bars 7, 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 formed into a unit having a pair of sheath tubes opening downward, and the pair of sheath tubes are placed over the pair of first struts 11. It may also be configured to be worn. Similarly, the divided body 7b of the longitudinal bar 7 and the second short bar 9 are unitized to have a pair of sheath tubes opening downward, and the pair of sheath tubes are placed over the pair of second supports 17. It may also be configured so that it can be attached.

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 metal fittings, 11: First column, 17: Second column

Claims (4)

a rectangular top plate having a pair of long sides and a pair of short sides;
a first main landing gear disposed on one of the pair of short sides;
A workbench comprising a ladder-shaped second main leg disposed on the other short side of the pair of short sides ,
a pair of first pillars erected near both ends of the one short side;
a pair of second supports erected near both ends of the other short side;
Utilizing the pair of first columns and the pair of second columns, a pair of longitudinal bars disposed above the pair of long sides, and a first longitudinal bar disposed above the one short side. and a second short side bar arranged above the other short side to surround the space above the top plate,
The pair of first supports and the first short bar are integrated into a gate shape,
The first support column includes a column portion extending vertically at a position close to the one short side, a base end portion disposed at a position closer to the other short side than the column portion, and the column portion and the base. and a connecting portion connecting the end portion,
The base end portion is rotatably supported on the long side side surface of the top plate,
The pair of first supports and the first short bar are tilted toward the top surface of the top plate while maintaining the gate shape, so that the first short bar is tilted toward the top surface of the top plate. A workbench characterized by being able to be accommodated in the form of a . Each of the longitudinal bars is constituted by a set of divided bodies divided at predetermined positions in the longitudinal direction thereof,
Of the set of divided bodies, the divided body on the first column side is rotatably supported by the first column and can be accommodated along the first column. The workbench according to claim 1 . Of the set of divided bodies, the divided body on the second column side is rotatably supported by the second column and can be accommodated along the second column. The workbench according to claim 2 . Any one of claims 1 to 3, wherein the second support is rotatably supported and can be accommodated along the main leg so as to fall in a direction away from the top plate. The workbench described in section .

Images