JP2006342555A - Portable work stand - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable work stand equipped with hand hold members, which has handrail members attached thereto via the hand hold members, not as retrofitted members but as permanent members, dispenses with separate provision of the handrail members and additional mounting work of the same, facilitates assembly and installation of the handrail members at upper side portions of a top board, to thereby prevent fall accidents of workers from the top board and improve the safety in the construction field. <P>SOLUTION: The portable work stand 1 is constructed by extending the top board 3 between a pair of ladder-like main legs 4, and erecting the rod-like hand hold members 6 at four corners of the top board 3. The portable work stand 1 is further formed of: handrail upper crosspieces 8 which each have one end thereof vertically rotatably pivoted on an upper portion of the hand hold member 6, and protrude in parallel with the top board 3; and rod-like blocking members 9 which each have one end thereof vertically rotatably pivoted on the handrail upper crosspiece 8, and are arranged in a cavity 13 in the vertical plane defined by the hand hold members 6, the handrail upper crosspieces 8, and the top board 3. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a portable work table used for construction work sites, interior / exterior work such as ceilings and wall surfaces of buildings, electrical wiring work, and the like.

  Conventionally, as shown in FIG. 13, for example, the portable work table 1 has a ladder-shaped main leg 4 formed by attaching a plurality of step bars 5 at appropriate intervals between a pair of support legs 4a. A rectangular top plate 3 is rotatably mounted between a pair of main legs 4, and a stay 7 is interposed between the top plate 3 and the main legs 4.

  Further, bar-like clue members 6 are erected at the four corners of the top plate 3 to serve as clues when the main leg 4 is raised and lowered. The clue member 6 is provided for provision according to the certification standards for portable worktables, and is always attached to a portable worktable whose top plate 3 surface height exceeds 1.5 m.

  However, the clue member 6 is intended to ensure safety when the main leg 4 is raised and lowered, and prevents falling from the top plate 3 when walking on the top plate 3 and working on it. Can not be planned.

  Therefore, as shown in FIG. 14, a U-shaped frame-shaped handrail 21 is separately prepared as means for preventing the fall from the top plate 3, and is arranged between the clue members 6 along the longitudinal direction of the top plate 3. Separately set up.

  In use, the main leg 4 is lifted, the clue member 6 is gripped, and the work is performed while standing on the top plate 3 or walking. In this case, even if the work is distracted and slips on the top plate 3, the handrail 21 prevents the fall or fall from the top plate 3.

  The prior art is generally performed by those skilled in the art, and does not relate to a known literature.

  The portable work table as described above is rapidly spreading as a safe work table to replace a stepladder or the like. However, since the handrail 21 is not stipulated by the accreditation standard, in reality, it is often a retrofitted optional part. For this reason, since it takes time and effort to attach and remove the handrail for the worker, the work is often performed without attaching the handrail, and a fall / fall accident is often caused.

  Further, since the handrail 21 is a separate part, the number of parts is increased, and not only a space for transportation and storage is required, but also a slip processing work such as ordering becomes complicated and troublesome.

  An object of the present invention is to eliminate the inconvenience of the conventional example, and in a portable work table provided with a clue member, a handrail is made permanent, not retrofitted, by using this clue member. It is an object of the present invention to provide a portable work table that can be easily and easily assembled on the side of a plate, can prevent a fall / fall accident from the top plate, and can improve safety.

  In order to achieve the above-mentioned object, the invention according to claim 1 is a portable type in which a top plate is bridged between a pair of ladder-shaped main legs, and rod-like cue members are erected at four corners of the top plate. In the workbench, an upper end of the handrail member that is pivoted in the vertical direction so as to be pivotable in the vertical direction and protruded in parallel with the top plate, and an end of the handrail upper rail that is pivotable in the vertical direction The gist of the invention is that a bar-shaped blocking member is provided that is mounted on a shaft and is disposed in a gap in a vertical plane formed by the handhold member, the handrail upper bar, and the top plate.

  According to the first aspect of the present invention, since the handrail upper bar is attached to the tip of the clue member, the handrail upper bar can be moved in the longitudinal direction of the top plate only by rotating the handrail upper bar with respect to the handhold member. If the bar-shaped blocking member is further rotated with respect to the upper rail of the handrail from this state, it is arranged in the vertical space formed by the handhold member, the upper rail of the handrail, and the top plate. The large gap is divided into small gaps by the blocking member. Therefore, the fall and fall from a top plate can be prevented.

  And since the handrail upper rail and the blocking member are not attached later, but are attached to the clue member in advance as described above, it is not necessary to prepare the handrail upper rail and the blocking member separately, and it is troublesome to install and remove. Saves storage space and transport, and can be installed with one touch.

  In addition, when a plurality of top plates are connected and used as a large stage, and the handrail upper rail is not necessary, the handrail upper rail can be rotated and folded in parallel with the clue member so that it does not protrude. It does not get in the way.

  According to a second aspect of the present invention, the upper rail of the handrail has a length of about one half of the length direction of the top plate, and protrudes horizontally along the longitudinal direction of the top plate from the cue member at the opposite position. The gist is that the protruding tips are connected.

  According to the second aspect of the present invention, if the handrail upper beam is rotated from the handhold member at the opposite position and arranged in the longitudinal direction of the top plate, the tip of the handrail upper beam at the opposite position is connected, and the ceiling Handrails that are continuous without gaps along the longitudinal direction of the plate are easily formed.

  The gist of the invention described in claim 3 is that the blocking member is formed to be extendable or foldable, and the other end is detachably locked to the clue member or the top plate.

  According to the invention described in claim 3, when the blocking member is not required, the other end is removed from the handle member and contracted or folded to open the vertical space formed by the handle member, the handrail upper rail, and the top plate. can do.

  The gist of the invention described in claim 4 is that the blocking member is formed so as to be foldable, and the other end is pivotally attached to a shaft attachment portion between the clue member and the top plate.

  According to the fourth aspect of the present invention, the blocking member is folded when not necessary, and the other end is rotated around the pivoting portion between the clue member and the top plate, so that the clue member, the handrail upper rail, and the ceiling The space on the vertical plane formed by the plate can be opened.

  According to a fifth aspect of the present invention, the blocking member is formed in a width that can be stored in the upper rail of the handrail in a contracted or folded state, and the upper rail of the handrail is formed in a width that can be stored in the clue member, And the handrail upper rail and the clue member are formed so as to be foldable into a single state.

  According to the fifth aspect of the present invention, since the blocking member, the handrail upper rail, and the handhold member are folded into a single state, when the blocking member and the handrail upper rail are unnecessary, the four spaces on the top plate are completely formed. It can be opened.

  The gist of the invention described in claim 6 is that the clue member is pivotally attached to the upper part of the main leg so as to be pivotable so as to be folded in parallel with the main leg.

  According to the invention described in claim 6, by further folding the clue member in which the blocking member and the handrail upper rail are folded in parallel with each other, the projecting member can be eliminated on the top plate. When a large stage is formed by connecting the portable work tables, the handrail upper rail and the cue member do not get in the way.

  As described above, in the portable worktable of the present invention, the handrail upper rail is rotatably attached to the handhold member, and therefore the handrail upper rail is pulled from the handhold member to the upper side part along the longitudinal direction of the top plate. By simply raising the handrail, the top rail can be placed on the top side of the top plate, and it is easy to install the top rail on the top plate without the need for a separate handrail member or special tools. Can be provided.

  Furthermore, since the blocking member is arranged in a large gap on the vertical surface formed by the handhold member, the handrail upper rail, and the top plate, the large gap can be divided into small parts, and the fall from the gap can be reliably prevented. .

  In addition, it does not require any special storage space or transportation space for the handrail upper rail or blocking member, and can be folded flat in parallel with the top plate and main legs for storage and transportation. .

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a front view showing a first embodiment of a portable worktable of the present invention, FIG. 2 is a side view of the same, and the basic structure of the portable worktable of the present invention is the conventional structure shown in FIGS. Since it is basically the same as the example, the same reference numerals are attached and detailed description is omitted here.

  The basic structure of the portable work table of the present invention is the same as in the prior art, and a plurality of step bars 5 are attached at appropriate intervals between a pair of support legs 4a to form a ladder-shaped main leg 4, and the ladder-shaped main leg. A rectangular top plate 3 is rotatably mounted between a pair of four, and a stay 7 that is bendable midway is interposed between the top plate 3 and the main leg 4.

  In addition, a rod-like clasp member 6 is erected from the main leg 4 so as to be rotatable by mounting brackets at the four corners of the top board 3, that is, at the lifts of the main leg 4 and the top board 3. These main legs 4, top plate 3 and clue member 6 are made of aluminum.

  In the portable work table 1 having such a configuration, as shown in FIG. 1, the bar-shaped handrail upper rail 8 is vertically moved along the longitudinal direction of the top board 3 by brackets at the upper ends of the respective clue members 6 on both sides as shown in FIG. It was pivotally attached to.

  The handrail member 6 and the handrail upper rail 8 are both channel-shaped with a U-shaped cross section, and the handrail upper rail 8 is more than the handhold member 6 so that the handrail upper rail 8 can be stored inside the handhold member 6. Was also slightly smaller.

  The handrail upper rail 8 has a length that is approximately one half of the length of the top plate 3 in the length direction. As shown in FIG. 3 and FIG. A connecting member 10 to the handrail upper rail 8 is provided.

  This connecting member 10 is a rod-shaped member having a square cross-section that is housed in the upper part of the handrail 8 so that it can be pulled out, and the lower opening of the handrail upper part 8 has a plate-like closing member 8a at the housing part. And the connecting member 10 is prevented from dropping from the handrail upper rail 8.

  In addition, an elongated hole 10 a for adjusting the length is formed on the upper surface and the lower surface of the connecting member 10, and a locking pin 11 passing through the elongated hole 10 a vertically extends from the upper surface to the lower surface near the tip of the handrail upper rail 8. It is fixed towards.

  A connecting hole 10b for coupling with the opposed handrail upper bar 8 is provided at the front end side of the connecting member 10, and a connecting hole 8b corresponding to the connecting hole 10b is provided at the front end side of the opposed handrail upper bar 8. And connecting pins 12 to be inserted into the connecting holes 10b and 8b are connected with a rope such as a chain.

  As shown in FIGS. 3 and 4, in the vicinity of the front end of the handrail upper bar 8, a bar-shaped block disposed in a vertical gap 13 formed by the handhold member 6, the handrail upper bar 8, and the top plate 3. One end of the member 9 is pivotally attached to the vertical direction by a pin.

  The blocking member 9 has a double-pipe structure that can be expanded and contracted by a combination of an outer tube 9a and an inner tube 9b. The shape of the blocking member 9 is a square tube, a circular tube, etc., and the diameter can be stored in the handrail upper rail 8. Thus, it is formed to be slightly smaller than the opening width of the channel-shaped handrail upper rail 8.

  And the spring lock piece as the fixing metal fitting 9c to the top plate 3 was attached to the other end of the blocking member 9 as shown in FIG.

  As a material for the handrail upper rail 8 and the blocking member 9, a lightweight material such as an aluminum alloy, a steel material, and a resin can be adopted in addition to aluminum, and the shape may be any shape that does not hinder folding.

  Next, the usage will be described. FIG. 1 shows a state in which the portable work table 1 is used. The main leg 4 is opened and a clue member 6 is erected. A handrail upper rail 8 extends from the tip of the clue member 6 along the longitudinal direction of the top plate 3. The top end of the handrail upper rail 8 that protrudes horizontally at the upper side and faces the handrail upper rail 8 is connected by a connecting member 10.

  In the connection method using the connection member 10, the connection member 10 is pulled out from one handrail upper bar 8. At this time, since the locking pin 11 is penetrated through the elongated hole 10a, the connecting member 10 does not come out of the handrail upper bar 8. Then, the tip of the connecting member 10 is inserted into the other handrail upper rail 8 from the tip opening, the connecting holes 10b and 8b are aligned, and the connecting pin 12 is inserted here, so that the connecting member 10 is placed on the other handrail. Connect to crosspiece 8. As a result, one handrail upper rail 8 and the other handrail upper rail 8 are connected and bridged over the side of the top plate 3.

  Next, the blocking member 9 is rotated with respect to the handrail upper bar 8 and pulled obliquely downward, the inner tube 9b is pulled out from the outer tube 9a and extended, and the fixing bracket 9c at the tip is locked to the top plate 3. Then, the blocking member 9 is fixed to the top plate 3.

  In this state, as shown in FIG. 1, the blocking member 9 is disposed in the vertical gap 13 formed by the handle member 6, the handrail upper rail 8, and the top plate 3, and the large gap 13 is formed by the blocking member 9. It is divided into three trapezoidal small gaps having almost the same area.

  Therefore, the worker who goes up the main leg 4 and reaches the vicinity of the top plate 3 reaches the top plate 3 while grasping the clue member 6 and ensuring safety. A handrail upper bar 8 is disposed on the open side of the top plate 3 and the large gap 13 on the upper side of the top plate 3 is divided into small ones by the blocking member 9. Accidents such as accidentally falling from the side of the top 3 in the middle are prevented.

  In order to fold the portable workbench 1 when not in use, as shown in FIG. 7, the locking member 9c fixed to the top plate 3 is unlocked, the blocking member 9 is detached from the top plate 3, and the inner tube 9b is removed. The whole is contracted by being accommodated in the outer tube 9a, and the connection pin 12 is pulled out of the connection holes 10b and 8b to release the connection between the one handrail upper rail 8 and the other handrail upper rail 8 (FIG. 7 (a) and FIG. 7 (b)).

  Next, the blocking member 9 is accommodated in the upper rail 8 of the handrail, and both of them are folded into one, and the single blocking member 9 and the upper rail 8 are moved downward, and the upper rail 8 is moved downward. By rotating, it is housed inside the clue member 6 (the state shown in FIG. 7C), and the whole is folded into a single state.

  Then, as shown in FIGS. 7 (d) and 7 (e), the blocking member 9, the handrail upper rail 8, and the handle member 6 folded together as described above are rotated, and the handle member 6 is rotated downward. By moving, it is accommodated in the support leg 4a, and the whole is folded into one.

  Although further illustration is omitted from this state, in the state where the blocking member 9, the handrail upper rail 8, the clasp member 6 and the main leg 4 are integrally folded flat, the stay 7 is unlocked and the main leg is released. 4 is folded on the lower surface of the top plate 3 so as to be parallel to the top plate 3. In this state, the entire portable workbench 1 is folded flat, so that only a small space for transportation and storage is sufficient.

  8, 9, and 10 show a second embodiment, and a bar-like clasp member 6 is erected from a main leg 4 so as to be rotatable by a mounting bracket at four corners of the top plate 3. A structure in which the handrail upper rail 8 is pivotally mounted in the vertical direction along the longitudinal direction of the top plate 3 and the blocking member 9 is pivotally mounted in the vertical direction from the handrail upper rail 8 is configured as follows. This is the same as in the first embodiment.

  Each of the handrail member 6 and the handrail upper rail 8 has a channel shape with a U-shaped cross section, and the handrail upper rail 8 is positioned toward the handhold member 6 so that the handrail upper rail 8 can be stored inside the handhold member 6. The size was slightly smaller than that.

  The blocking member 9 is composed of a first member 9d and a second member 9e that is rotatably coupled to the lower end of the first member 9d, and the upper end of the first member 9d is used as the handrail upper rail 8. It is pivotally attached.

  As shown in FIG. 10, a hook pin 14 to the clasp member 6 is provided at the lower end side portion of the second member 9e, and the hook pin 14 is engaged with the clasp member 6 at a height position, for example, about one half. A downward L-shaped notch recess 16 was formed to stop.

  The first member 9d is provided with a notch 15a for allowing the hook pin 14 to be inserted when the first member 9d and the second member 9e are folded flat. A notch 15b is provided in the handrail upper rail 8 to allow the hook pin 14 to escape and be inserted when it is folded flat on the rail 8, and the hook pin 14 is released when the handrail upper rail 8 is folded flat on the handle member 6. The cue member 6 is provided with a notch 15c for insertion.

  The first member 9d is formed in a channel shape so that the second member 9e can be accommodated, and the second member 9e is a square tube, a round tube, or a channel shape as long as the hook pin 14 is attached to the tip. Any of square bars and the like may be used, but a square tube is desirable to make it lightweight and compact as long as the strength allows.

  Next, the usage will be described. In order to block the opening space above the side of the top plate 3 with the clue member 6, the handrail upper rail 8 and the blocking member 9, the clue member 6 is erected in the same manner as in the first embodiment. 6, the handrail upper bar 8 is rotated and disposed horizontally, and from this state, the blocking member 9 is further rotated downward and disposed obliquely below the handrail upper bar 8.

  Then, the second member 9e is further rotated downward with respect to the first member 9d, the entire length of the blocking member 9 is extended, and the first member 9d and the second member 9e are linearly formed. Thus, the hook pin 14 at the lower end of the second member 9 e is locked to the notch recess 16 formed in the handle member 6, and the blocking member 9 is fixed to the handle member 6.

  As a result, as shown in FIG. 8, the blocking member 9 is obliquely installed between the handrail upper rail 8 and the clasp member 6, and the gap 13 due to the large opening formed above the side portion of the top plate 3 is blocked. It is divided into small parts by the member 9, and accidents such as accidental falling from the side of the top plate 3 during work or the like are prevented.

  In order to fold the portable work table 1 when not in use, the hook pin 14 is notched from the state in which the blocking member 9 is obliquely installed between the clue member 6 and the handrail upper rail 8 as shown in FIG. 9a. It removes from the recessed part 16, the fixation of the blocking member 9 and the clue member 6 is released, the second member 9e of the blocking member 9 is rotated upward and folded to the upper side of the first member 9d. At this time, since the hook pin 14 enters the notch 15a provided in the first member 9d, the hook pin 14 does not become an obstacle to folding.

  The blocking member 9 folded in this way is rotated upward and further folded near the handhold member 6 on the lower side of the handrail upper bar 8, and the blocking member 9 and the handrail upper bar 8 are one thing. Fold it down. Also at this time, the hook pin 14 enters the notch 15b formed in the handrail upper rail 8, so that the hook pin 14 does not become an obstacle to folding.

  As shown in FIG. 9c, the handrail upper bar 8 with the blocking member 9 folded is further rotated and folded further to the upper portion with respect to the clue member 6, so that the whole is made into a single object. At this time, the hook pin 14 enters the notch 15 c formed in the clue member 6.

  Next, as shown in FIG. 9d and FIG. 9e, the blocking member 9, the handrail upper rail 8, and the clasp member 6 that are integrally folded as described above are rotated, and the clasp member 6 is rotated downward to support the column. It accommodates in the leg 4a and folds these whole into one thing.

  FIGS. 11 and 12 show a third embodiment, which is a modification of the second embodiment. As a configuration of the blocking member 9, a first member 9f and a lower part of the first member 9f are pivoted. The point formed by combining with the second member 9g to be worn is the same as in the second embodiment, but in this third embodiment, the hook pin 14 projecting from the lower end of the second member 9g is used as the clasp member 6. The lengths of the first member 9f and the second member 9g so that the second member 9g is disposed at a right angle with respect to the first member 9f in a state of being locked in the notch recess 16 formed in the middle. And the axis attachment position was determined.

  The first member 9f and the handrail upper bar 8 are formed with notches 15d and 15e into which the hook pins 14 are respectively inserted. The notch 15e formed on the handrail upper bar 8 and the clue member 6 are formed. The notch recesses 16 are formed at the same position so that the distance between the clasp member 6 and the handrail upper rail 8 from the shaft attachment portion is equal, and the notch recess 16 is shared with the notch for the hook pin 14 to escape. To do.

  The usage will be described. With respect to the standing clue member 6, the handrail upper rail 8 is rotated upward and disposed horizontally, and the first member 9f is rotated downward from the handrail upper rail 8 while being pulled out vertically. The second member 9g is pulled out downward from the first member 9f, the second member 9g is horizontally disposed, the hook pin 14 at the tip thereof is engaged with the notch 16 and the tip of the blocking member 9 is caught. It is fixed in the middle of the member 6.

  In this state, the blocking member 9 is disposed in an L shape in the gap 13 at the corner where the clue member 6 and the handrail upper bar 8 are connected.

  When not in use, the hook pin 14 is removed from the notch 16 and the blocking member 9 is removed from the state in which the first member 9f and the second member 9g are arranged in a right-angled L-shape as shown in FIG. 12a. And the clasp member 6 are released, and the second member 9g is folded below the first member 9f as shown in FIG. At this time, the hook pin 14 enters the notch 15d formed in the first member 9f.

  If the first member 9f is rotated in the front end direction below the handrail upper rail 8 from this state, the blocking member 9 is integrally folded below the handrail upper rail 8. At this time, the hook pin 14 enters the notch 15e formed in the upper rail 8 of the handrail.

  In this way, the handrail upper rail 8 in which the blocking member 9 is integrally folded is rotated downward to be folded integrally with the clue member 6. At this time, the hook pin 14 enters the notch recess 16 formed in the clue member 6 (see FIG. 12c).

  Then, as shown in FIGS. 12d and 12e, the clasp member 6 is pivoted downward and stored in the support leg 4a, and the whole is folded into one.

  In all the embodiments, the state in which the clue member 6, the handrail upper bar 8, and the blocking member 9 are folded is used when the plurality of portable worktables 1 are connected and used as a large stage. It is possible to cope with the case of eliminating the member protruding upward from the head.

It is a front view of the use condition which shows 1st Embodiment of the portable worktable of this invention. It is a side view which shows the use condition which shows 1st Embodiment of the portable worktable of this invention. It is a perspective view of the connection part of the opposition handrail upper cross which is the principal part which shows 1st Embodiment of the portable worktable of this invention. It is a vertical side view of the connection part of the handrail upper crosspiece which is the principal part which shows 1st Embodiment of the portable worktable of this invention, and the interruption | blocking member. It is a vertical side view of the connection part of the handrail upper cross which is the principal part which shows 1st Embodiment of the portable worktable of this invention, and a connection member. It is a perspective view of the spring lock piece which is the principal part which shows 1st Embodiment of the portable worktable of this invention. It is a front view which shows the folding order of 1st Embodiment of the portable worktable of this invention. It is a front view which shows 2nd Embodiment of the portable worktable of this invention. It is a front view which shows the folding order of 2nd Embodiment of the portable worktable of this invention. It is a perspective view of the fixing | fixed part of the interruption | blocking member which is the principal part of 2nd Embodiment of the portable worktable of this invention. It is a front view which shows 3rd Embodiment of the portable worktable of this invention. It is a front view which shows the folding order of 3rd Embodiment of the portable worktable of this invention. It is a perspective view of the conventional portable worktable. It is a perspective view which shows the other example of the conventional portable worktable.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Portable worktable 3 ... Top plate 4 ... Main leg 4a ... Supporting leg 5 ... Stepping bar 6 ... Cue member 7 ... Stay 8 ... Handrail upper bar 8a ... Closure member 8b ... Connection hole 9 ... Blocking member 9a ... Outside Pipe 9b ... Inner pipe 9c ... Fixing bracket 9d, 9f ... First member 9e, 9g ... Second member 10 ... Connection member 10a ... Elongated hole 10b ... Connection hole 11 ... Locking pin 12 ... Connection pin 13 ... Air gap 14 ... Hook pin 15a, 15b, 15c, 15d, 15e ... Notch 16 ... Notch recess 21 ... Handrail

Claims (6)

  In a portable work table in which a top plate is bridged between a pair of ladder-shaped main legs, and rod-like clasp members are erected at the four corners of the top plate, one end is pivotable in the vertical direction at the top of the clue member. Is formed of the handrail member, the upper rail of the handrail and the top plate, and one end of which is pivotally attached to the upper rail of the handrail so as to be rotatable in the vertical direction. A portable work table comprising a bar-shaped blocking member disposed in a gap on a vertical surface.   The upper rail of the handrail has a length of about one half of the length direction of the top plate, protrudes horizontally along the top plate longitudinal direction from the cue member at the opposite position, and the protruding tip is connected. The portable worktable according to claim 1, wherein the worktable is a worktable.   The portable worktable according to claim 1 or 2, wherein the blocking member is formed to be extendable or foldable, and the other end is detachably locked to the clue member or the top plate.   The portable worktable according to claim 1 or 2, wherein the blocking member is formed so as to be foldable, and the other end is pivotally attached to a shaft attachment portion between the clue member and the top plate.   The blocking member is formed in a width that can be stored in the upper rail of the handrail in a contracted or folded state, and the upper rail of the handrail is formed in a width that can be stored in the handhold member. The portable worktable according to any one of claims 1 to 4, wherein said portable workbench is formed so as to be foldable into a single state.   The portable worktable according to any one of claims 1 to 5, wherein the clue member is pivotally attached to the upper part of the main leg so as to be folded in parallel with the main leg. .

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