JP6831989B2 - Portable workbench - Google Patents

Description

The present invention relates to a portable workbench suitable for use in construction sites, interior / exterior work on ceilings and walls of buildings, electrical wiring work, and the like.

As a portable workbench, for example, in Patent Document 1, in a portable workbench in which a top plate is laid between a pair of ladder-shaped main legs, clue members are erected at four corners of the top plate to serve as a clue member. A configuration has been proposed in which a handrail strut made of a sheath tube to be covered, a pair of handrail bars to be hung between the handrail struts, and a pair of handrail stiles to be hung between the pair of handrail stiles are provided.
In such a portable workbench, the upper body of the worker standing on the top plate is surrounded by a pair of handrail rails and a pair of handrail rails for the short side. Therefore, when the upper body approaches one of the handrail rails, the operator can detect that the upper body is approaching the peripheral edge of the top plate, and can alert the operator.

Japanese Unexamined Patent Publication No. 2008-255586

In Patent Document 1, the clue member and the handrail strut can be folded and stored along the main landing gear.
Here, since the pair of handrail rails and the pair of handrail rails for the short hand direction need to be arranged at a height position surrounding the upper body of the worker standing on the top plate, the clue member and the handrail strut have a certain length. Is required. On the other hand, there are various types of top plate height above ground, in other words, the length of the main landing gear, and in a portable workbench where the height of the top plate is low, compared to the length of the main landing gear, It is possible that the length of the clue member and the handrail column will be longer. In this case, when the clue member and the handrail support are folded and stored along the main landing gear, the handrail support is in a state of protruding beyond the length of the main landing gear, resulting in poor storage.

The present invention has been made in view of the above points, and an object of the present invention is to improve the convenience of a portable workbench in terms of storability and the like.

The portable work table of the present invention is a portable work table in which a top plate is hung between a pair of main legs and clue rods are erected at four corners of the top plate, and is provided on the clue rods. A support column and a crosspiece member that is supported by the support column and extends substantially horizontally above the top plate are provided, the height position of the support column with respect to the clue bar is variable, and the crosspiece member is above the top plate. A pair of longitudinal crosspiece members extending in the longitudinal direction of the top plate and a pair of short side rail members extending in the lateral direction of the top plate above the top plate are provided. One end of the member is rotatably supported by the longitudinal rail member, the short side rail member can be stored along the longitudinal rail member, and the short side rail member is placed at the opposite position. By rotating toward the longitudinal rail member, the other end of the short side rail member can be detachably locked to the longitudinal rail member at the opposite position, and the longitudinal rail member is attached to the support column. It is rotatably supported at the upper part and can be folded and stored along the clue rod and the support column, and the clue rod and the support column can be folded and stored along the main leg, and the clue rod can be folded and stored. And, in a state where the support column is folded and stored along the main leg, the support column with respect to the clue rod so that the length of the clue rod and the support column is shorter than the length of the main leg. It is characterized by being able to change the height position of.

According to the present invention, the convenience of a portable workbench can be improved in terms of storability and the like.

It is a perspective view which shows the portable workbench which concerns on 1st Embodiment. It is a perspective view which shows the protruding member arranged on the side surface of the clue bar. It is a figure which shows the structural example around the projecting member. It is a figure which shows the short side rail member. It is a figure which shows the state which the short side rail member is stored along the long side rail member. It is a perspective view of the main part which shows the state which the short side cross member is bridged. It is a reference figure for demonstrating the structure which bridges a pair of short side rail members in a state which bridges only one of a pair of long side rail members. It is a perspective view which shows the portable workbench which concerns on 2nd Embodiment. It is a figure which shows the split body of the longitudinal side rail member.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
(First Embodiment)
FIG. 1 is a perspective view showing a portable workbench 1 according to the first embodiment. In the present application, the vertical and vertical directions refer to, for example, a direction based on the portable workbench 1 in use as shown in FIG.
In the portable workbench 1 according to the present embodiment, the top plate 3 is bridged between the pair of ladder-shaped main landing gears 2 and 2. Each main landing gear 2 is rotatably attached to the short sides of the top plate 3, and is capable of accommodating folded on the rear side of the top plate 3 (see arrow R ₁ in FIG. 1).

At the four corners of the top plate 3, clue rods 4 made of a tubular body having a rectangular cross section are erected. The clue rod 4 is attached to the main landing gear 2 via the mounting bracket 5, is rotatably supported around the horizontal axis, and can be folded and stored along the main landing gear 2 (arrows in FIG. 1). See R ₂ ). The clue rod 4 is used for the operator to hold his / her hand when he / she moves up / down using the main landing gear 2 or works on the top plate 3.
For example, an aluminum alloy is used for the main landing gear 2, the top plate 3, and the clue rod 4, and the weight is reduced while ensuring sufficient strength.

A support column 6 made of a tubular body having a rectangular cross section is provided so as to cover each clue rod 4. The support column 6 is made of, for example, a resin tube, has a rectangular cross section that is one size larger than the clue rod 4, and has an outer peripheral surface and a slidable inner peripheral surface of the clue rod 4. When the clue rod 4 is folded and stored along the main landing gear 2, the support column 6 is also folded and stored along the main landing gear 2.

In the portable workbench 1 according to the present embodiment, the height position of the support column 6 with respect to the clue rod 4 is variable.
As shown in FIG. 2, a protruding member 7 that is freely accessible is arranged on the side surface of the clue rod 4. As shown in FIG. 3, the projecting member 7 is maintained in a state of projecting from the side surface of the clue rod 4 by the elastic force of the spring 8, and can be pushed against the spring 8. Further, as shown in FIG. 1, holes 9 through which the projecting member 7 can enter and exit are formed at two positions in the height direction of the support column 6.
In the clue rod 4 and the support column 6 as described above, the height position of the support column 6 can be fixed by inserting the projecting member 7 into the hole 9. Then, if the projecting member 7 is pushed in and removed from the hole 9, the support column 6 can be slid along the clue rod 4 to change the height position of the support column 6 with respect to the clue rod 4 in a telescopic manner. In the present embodiment, holes 9 and 9 are formed at two positions in the height direction of the support column 6, and the height of the support column 6 can be changed in two steps.

As will be described in detail below, the columns 6 are a pair of struts 6 extending substantially horizontally in the longitudinal direction of the top plate 3 above the peripheral edge of the top plate 3 by using the clue rods 4 at the four corners of the top plate 3. The longitudinal side rail members 10 and 10 and a pair of short side rail members 11 and 11 extending substantially horizontally in the short side direction of the top plate 3 are supported.

A longitudinal rail member 10 is bridged between the columns 6 arranged in the longitudinal direction of the top plate 3. The pair of longitudinal crosspiece members 10 and 10 have a point-symmetrical relationship with respect to the center of the top plate 3 in terms of their shape and peripheral structure (attachment structure to the column 6 and the like).
The longitudinal cross-section member 10 is made of, for example, a resin-made tubular body having a rectangular cross section, and both ends thereof are attached to the upper part of the support column 6 via a mounting bracket 12 and are rotatably supported around a horizontal axis (FIG. 1). See arrow R ₃ inside). Further, the longitudinal crosspiece member 10 is preferably divided at the central portion on the way (hereinafter, referred to as divided bodies 10a and 10b). As a result, the divided bodies 10a and 10b of the longitudinal crosspiece member 10 can be folded and stored along the clue rods 4 and the columns 6, respectively.
Then, with the clue rods 4 and the columns 6 standing at the four corners of the top plate 3, the divided bodies 10a and 10b are rotated until they become horizontal, so that the end faces abut each other and the longitudinal crosspiece member 10 is formed. It can be in a state of being bridged. The divided bodies 10a and 10b are detachably connected by, for example, a connecting member 13 having a slide structure.

A short side rail member 11 is attached to each of the long side rail members 10. The pair of short side rail members 11 and 11 have a point-symmetrical relationship with respect to the center of the top plate 3 with respect to their shapes and peripheral structures (attachment structure to the longitudinal side rail member 10, locking structure, etc.). Have.
The short side rail member 11 can be telescopically expanded and contracted in the longitudinal direction thereof. As shown in FIG. 4, the short side rail member 11 is made of, for example, an aluminum alloy or stainless steel, and can be expanded and contracted by moving the rod member 11a in and out of the pipe member 11b. Although not specifically shown, it is preferable to have a stopper structure for preventing the bar 11a from coming off.
The tip of the bar 11a is bent downward at 90 degrees to form a locking projection 11c of the short side rail member 11. Further, a substantially L-shaped member 11d bent downward at 90 degrees is inserted into the end portion of the pipe member 11b to form a base end portion 11e of the short side rail member 11.

As shown in FIG. 5, on the upper surface 10c of the longitudinal side rail member 10 (more specifically, the divided body 10a) in a bridged state, the base end portion 11e of the short side rail member 11 is located close to the support column 6. Is rotatably supported.
In this way, the base end portion 11e of the short side rail member 11 is rotatably supported by the upper surface 10c of the split body 10a, so that the short side rail member 11 is stored along the upper surface 10c of the split body 10a. can do. Further, when the longitudinal side rail member 10 is bridged, the short side rail member 11 supported by the longitudinal side rail member 10 can rotate around the vertical axis, and can be attached to the longitudinal rail member 10 at the opposite position. can be rotated in a horizontal direction toward (see arrow R ₄ in FIG. 5).

As shown in FIG. 5, a locking hole 14 is formed in the upper surface 10c of the divided body 10a, and the locking projection 11c of the short side rail member 11 that is supported by itself is inserted to be detachably locked. can do. As a result, the short side rail member 11 can be held in a stored state.
Further, as shown in FIG. 6, a locking hole 15 is formed in the upper surface 10c of the divided body 10b, and the locking projection 11c of the short side rail member 11 supported by the longitudinal side rail member 10 at the opposite position. Can be inserted. That is, the locking projection 11c of the short side rail member 11 is inserted into the locking hole 15 by rotating the short side rail member 11 in the horizontal direction by about 90 degrees toward the longitudinal side rail member 10 at the opposite position. Then, it can be detachably locked. As a result, the short side rail member 11 can be held in a stretched state.

The flow of storing the portable workbench 1 as described above will be described again. First, the short side rail member 11 is stored along the upper surface 10c of the divided body 10a (see FIG. 5). Then, the divided bodies 10a, 10b to be folding accommodated respectively along the cue stick 4 and column 6 (see arrow R ₃ in FIG. 1). Next, the clue rod 4 and the support column 6 are folded and stored along the main landing gear 2 ( _{see arrow R 2} in FIG. 1). Then, by folding and storing the main landing gear 2 on the back side of the top plate 3 ( _{see the arrow R 1} in FIG. 1), the portable workbench 1 can be compactly folded and stored.

As shown in FIG. 6, a belt 16 having a hook-and-loop fastener, for example, is attached to each short side rail member 11. The belt 16 hangs down from the short side rail member 11 in a state where the short side rail member 11 is bridged. In the drawings other than FIG. 6, the belt 16 is omitted.
By attaching the belt 16 to the short side rail member 11 in this way, the short side rail member 11 can be bundled with the split body 10a in the stored state and the stored state can be maintained. Further, the short side rail member 11 may be bundled not only in the divided body 10a but also in the clue rod 4 and the support column 6 and further in the main landing gear 2.
Further, if the belt 16 is set to have a conspicuous fluorescent color or the like, it can be seen at a glance whether or not the short side rail member 11 is hung on the short side of the top plate 3 which is the lifting port. Can be recognized. In addition, the operator standing on the top plate 3 can visually recognize the position of the short side rail member 11. In this case, for example, if the support column 6 and the longitudinal side rail member 10 are yellow and the belt 16 is also yellow accordingly, the work of standing on the top plate 3 even if the short side rail member 11 remains metallic. It can give a person the feeling of being surrounded on all sides.

Here, depending on the size relationship between the longitudinal side and the lateral side of the top plate 3, the length l of the divided body 10a (see FIG. 6) is compared with the distance D between the pair of longitudinal crosspiece members 10 and 10 (see FIG. 6). (See FIG. 5) can be short. In this case, if the length of the short side rail member 11 is determined according to the distance D between the pair of long side rail members 10 and 10, when the short side rail member 11 is stored along the split body 10a. The short side rail member 11 protrudes beyond the length l of the divided body 10a.
Therefore, the short side rail member 11 can be expanded and contracted in the longitudinal direction thereof. As a result, the short side rail member 11 is extended when it is bridged between the pair of longitudinal rail members 10 and 10, and the short side rail member 11 is contracted when it is stored along the split body 10a. The short side rail member 11 can be stored within the length l of 10a, and the storage property can be improved.

Further, as described above, in the portable workbench 1 having a low ground clearance of the top plate 3, the lengths of the clue rods 4 and the columns 6 are longer than the length L of the main landing gear 2 (see FIG. 1). Can be longer. In this case, when the clue rod 4 and the support column 6 are folded and stored along the main landing gear 2, the clue rod 4 and the support column 6 are in a state of protruding beyond the length L of the main landing gear 2.
Therefore, the height position of the support column 6 with respect to the clue rod 4 is made variable. In the present embodiment, holes 9 and 9 are formed at two positions in the height direction of the support column 6, and the height of the support column 6 can be changed in two steps. In the state where the projecting member 7 is inserted into the lower hole 9 (the state shown in FIG. 1), the upper end of the support column 6 is located around the upper body of the worker standing on the top plate 3, and the workers with the crosspiece members 10 and 11. Can surround the upper body. On the other hand, when the projecting member 7 is inserted into the upper hole 9, the upper end position of the support column 6 is lower, and the lengths of the clue rod 4 and the support column 6 are shorter than the length L of the main landing gear 2. Become. As a result, when the clue rod 4 and the support column 6 are folded along the main landing gear 2, the clue rod 4 and the support column 6 can be stored within the length L of the main landing gear 2, and the storability is improved. Can be done.

In the configuration described so far, it is assumed that the pair of longitudinal crosspiece members 10 and 10 are bridged with the clue rods 4 and the columns 6 standing at the four corners of the top plate 3, and the pair of short sides. The crosspiece members 11 and 11 can be bridged.
In the portable workbench 1 according to the present embodiment, the pair of short side rail members 11 and 11 can be bridged even when only one of the pair of longitudinal side rail members 10 and 10 is bridged. It has become. With reference to FIG. 7, a configuration will be described in which the pair of short side rail members 11 and 11 are bridged with only one of the pair of longitudinal side rail members 10 and 10 being bridged. Note that FIG. 7 shows the size relationship of each part with the portable workbench 1 according to the present embodiment (size relationship between the long side and the short side of the top plate 3, the size of the main landing gear 2 and the clue rod 4 and the support column 6). The relationship, the size relationship between the split body 10a and the short side rail member 11 etc.) do not match, but there is no difference in the configuration in which the pair of short side rail members 11 and 11 are bridged, so refer to FIG. The same components will be described with the same reference numerals.

In the following, of the pair of longitudinal crosspiece members 10 and 10, the longitudinal crosspiece member in a bridged state is referred to as one longitudinal crosspiece member 10A, and the longitudinal length in a state of being stored along the clue rod 4 and the support column 6. The side rail member will be referred to as the other longitudinal side rail member 10B, and details will be described.
As described above, the short side rail member 11 supported by one long side rail member 10A can be rotated in the horizontal direction toward the other long side rail member 10B at the opposite position.
However, since the other longitudinal crosspiece member 10B is housed along the clue rod 4 and the support column 6, the position of the locking hole 15 is such that the locking projection 11c of the short side rail member 11 is inserted. It is in a position where it cannot be done.

Therefore, in the present embodiment, as shown in FIG. 6, a locking hole 17 for inserting the locking projection 11c of the short side rail member 11 is formed on the top surface of the mounting bracket 12 that supports the split body 10b. There is. The position of the locking hole 17 does not change in both the state in which the longitudinal rail member 10 is bridged and the state in which the longitudinal rail member 10 is housed along the clue rod 4 and the support column 6. As a result, the short side rail member 11 is rotated about 90 degrees + α in the horizontal direction toward the other long side rail member 10B at the opposite position, so that the locking projection 11c at the tip thereof is made into the locking hole 17. Can be inserted. Note that α means an angle corresponding to a misalignment between the locking hole 15 and the locking hole 17 (see FIG. 6).

On the other hand, the short side rail member 11 supported by the other long side rail member 10B can rotate about the horizontal axis and can be rotated in the vertical direction toward one long side rail member 10A at the opposite position. it can.
In this case, the locking projection 11c of the short side rail member 11 has a positional relationship that is 90 degrees out of phase with the locking hole 15 formed in the upper surface 10c of one of the longitudinal side rail members 10A at the opposite position. ..
Therefore, in the present embodiment, as shown in FIGS. 4 to 6, a second locking projection 11f is provided at the tip of the short side rail member 11 so as to be 90 degrees out of phase with the locking projection 11c. It is provided. As a result, the short side rail member 11 is rotated in the vertical direction toward one of the longitudinal side rail members 10A at the opposite position, so that the second locking projection 11f at the tip thereof is inserted into the locking hole 15. can do.

In this way, the portable workbench 1 is used in a state in which the portable workbench 1 is surrounded on all sides by a pair of long side rail members 10, 10 and a pair of short side rail members 11, 11, and a pair of long side rail members 10, 10. It can be selectively installed in a usage state in which one of them and a pair of short side rail members 11 and 11 surround three sides.
In the normal use state, by enclosing all four sides, the worker standing on the top plate 3 stands near the peripheral edge of the top plate 3 when the upper body approaches any of the crosspiece members 10 and 11. You can sense that you are. Then, in the used state in which the longitudinal side of the top plate 3 is brought close to the wall surface or the like, the longitudinal side rail member 10 on the wall surface side can be stored to improve workability. Also at this time, on three sides other than the wall surface side, the worker standing on the top plate 3 may detect that the upper body is approaching the peripheral edge of the top plate 3 when approaching any of the crosspiece members 10 and 11. it can.

(Second Embodiment)
FIG. 8 is a perspective view showing the portable workbench 1 according to the second embodiment. In the following, the differences from the first embodiment will be mainly described, and the components common to the portable workbench 1 according to the first embodiment are designated by the same reference numerals and the description thereof will be omitted. ..
As shown in FIG. 8, in the portable workbench 1 according to the second embodiment, the length of the longitudinal side of the top plate 3 is longer than that in the first embodiment. That is, the length of the longitudinal crosspiece member 10 is longer than that of the first embodiment.
In this case, when the divided bodies 10a and 10b of the longitudinal crosspiece member 10 are folded and stored along the clue rods 4 and the columns 6, the divided bodies 10a and 10b exceed the lengths of the clue rods 4 and the columns 6, respectively. It will be in a protruding state.

Therefore, in the portable workbench according to the second embodiment, each of the divided bodies 10a and 10b of the longitudinal rail member 10 can be telescopically expanded and contracted in the longitudinal direction thereof.
FIG. 9 shows the configuration of the divided body 10a. The divided body 10a is composed of a first tube body 18 having a rectangular cross section and a second tube body 19 having a rectangular cross section. A reinforcing member 20 made of a tubular body having a rectangular cross section is provided at the end of the first tubular body 18, and is attached to the mounting bracket 12 on the upper part of the column 6 via the reinforcing member 20. Further, the second pipe body 19 has a rectangular cross section that is one size larger than the first pipe body 18, and has an inner peripheral surface that is slidable with the outer peripheral surface of the first pipe body 19. The second tube 19 can be expanded and contracted by sliding with respect to the first tube 18.
An elongated hole 21 extending in the longitudinal direction thereof is formed on the inner surface of the first tube body 18. Further, the second pipe body 19 is provided with a protrusion 22 arranged in the elongated hole 21 of the first pipe body 18. Thereby, the second tube body 19 can be guided so as to slide straight, and the slide range of the tube bodies 18 and 19, that is, the expansion / contraction range of the divided body 10a can be determined.
The configuration of the divided body 10b is basically the same as that of the divided body 10a, and the description thereof will be omitted here.

As described above, the divided bodies 10a and 10b of the longitudinal crosspiece member 10 can be expanded and contracted in the longitudinal direction thereof. As a result, the divided bodies 10a and 10b can be stored within the length of the clue rods 4 and the columns 6 by shrinking the divided bodies 10a and 10b when they are folded and stored along the clue rods 4 and the columns 6, respectively. It can be done and the storability can be improved.

Although the present invention has been described above together with the embodiments, the above-described embodiments merely show examples of embodiment of the present invention, and the technical scope of the present invention is interpreted in a limited manner by these. It must not be. That is, the present invention can be implemented in various forms without departing from the technical idea or its main features.
For example, in the above embodiment, it is assumed that the clue rod 4 and the support column 6 can be folded and stored along the main landing gear 2, and the relationship between the length L of the main landing gear 2 and the lengths of the clue rod 4 and the support column 6 has been described. The application destination of the present invention is not limited to this. That is, regardless of whether or not the clue rod 4 and the support column 6 can be folded and stored along the main landing gear 2, and regardless of the size relationship between the main landing gear 2 and the clue rod 4 and the support column 6, the present invention. May be applied to make the height position of the column 6 with respect to the clue rod 4 variable. Even in this case, since the overall height of the portable workbench 1 itself can be lowered, it can be said that the storability can be improved.

Moreover, it is not limited to focusing on storability. For example, the crosspiece members 10 and 11 need to be arranged at a height position surrounding the upper body of the worker standing on the top plate 3, but the height naturally differs depending on the worker. Therefore, depending on the height of the crosspiece members 10 and 11, it may be difficult for a short worker to work. Also in this case, by making the height position of the support column 6 variable with respect to the clue rod 4, it is possible to change the height position of the crosspiece members 10 and 11 according to the height of the worker standing on the top plate 3. , The convenience of the portable workbench can be improved.
Further, in the above embodiment, the height position of the support column 6 with respect to the clue rod 4 is changed in two steps, but it may be changed in three steps or more. In particular, from the viewpoint of adjusting to the height of the worker, the height positions of the crosspiece members 10 and 11 can be finely changed according to the height of the worker standing on the top plate 3 by making it variable in three or more steps. it can.

1: Portable workbench 2: Main landing gear 3: Top plate 4: Clue bar, 6: Strut, 10: Longitudinal rail member, 10a: Split body, 10b: Split body, 11: Short side rail member

Claims (5)

A portable workbench in which a top plate is laid between a pair of main landing gears and clue rods are erected at the four corners of the top plate.
The columns provided on the clue rod and
It is provided with a crosspiece member that is supported by the support column and extends substantially horizontally above the top plate.
The height position of the support column with respect to the clue rod can be changed .
As the crosspiece members, a pair of longitudinal crosspiece members extending in the longitudinal direction of the top plate above the top plate and a pair of short side crosspieces extending in the lateral direction of the top plate above the top plate. Equipped with parts
One end of the short side rail member is rotatably supported by the long side rail member, and the short side rail member can be stored along the long side rail member, and the short side rail member can be stored. Is rotatable toward the longitudinal rail member at the opposite position so that the other end of the short side rail member can be detachably locked to the longitudinal rail member at the opposite position.
The longitudinal crosspiece member is rotatably supported by the upper part of the support column, and can be folded and stored along the clue rod and the support column.
The clue rod and the support column can be folded and stored along the main landing gear.
In a state where the clue rod and the support column are folded and stored along the main landing gear, the clue rod and the support column are shorter than the length of the main landing gear. A portable workbench characterized in that the height position of the support column can be changed. The portable workbench according to claim 1 , wherein the short side crosspiece member can be expanded and contracted in the longitudinal direction thereof. The portable workbench according to claim 1 or 2 , wherein the longitudinal crosspiece member can be expanded and contracted in the longitudinal direction thereof. The longitudinal crosspiece member is divided in the middle, and each divided body of the longitudinal crosspiece member is rotatably supported by the upper part of the support column, and can be folded and stored along the clue rod and the support column. And
The portable workbench according to claim 3 , wherein each of the divided bodies can be expanded and contracted in the longitudinal direction thereof. The portable workbench according to any one of claims 1 to 4 , wherein a belt is attached to the short side rail member.

Images