JP5594954B2 - Portable worktable - Google Patents

Description

  The present invention relates to a stepladder-type portable work table used in construction work sites, interior / exterior work such as ceilings and wall surfaces of buildings, and high-place work such as electrical wiring work.

  As a workbench, there is a stepladder as is well known in the art, and this is the most pivotal part, which is pivotally attached to the upper ends of a pair of ladder-like main legs with a plurality of step bars attached at appropriate intervals. A top plate is provided in the upper part, and the pair of main legs are opened and closed by turning the pivoting portion so that it can be folded flat.

  In such a stepladder-shaped portable work table, the top plate is not provided on the uppermost stage which is the pivoting part of the main leg, but is installed between the pair of main legs at a position slightly lower than this, and the top pivoting part is Has a handrail frame that can be folded and mounted (see, for example, Patent Document 1).

As shown in FIG. 6, a ladder-like main leg 3 is formed by attaching a step rail 2 at an appropriate interval between a pair of strut legs 1 having a handrail strut portion 4 extending on the upper part, as shown in FIG. The top ends 6 are pivotally attached to each other so that the upper ends thereof are pivotable with respect to each other. A handrail 5 protruding outward from each leg 3 is attached to be freely foldable.
JP-A-2005-273304

  The top plate of the portable work bench described in JP-A-2005-273304 is installed between main legs and has a width equal to the distance between main legs. On the other hand, since the main leg extends outward in the shape of a letter C centering on the upper end of the pivot, the top plate position on the top should be May be separated from the wall surface, making it difficult to reach the work location, and workability is not good.

  In addition, the handrail is also rotated in such a manner that the lower end is lifted from the state folded downward along the main leg, and the worker is standing on the top board. When the work is performed, the worker is present in the turning trajectory of the handrail.

  For this reason, workers need to take measures such as raising the handrail before standing on the top board, or crouching when raising the handrail on the top board. The workability is not good.

  In order to eliminate the inconvenience of the conventional example, the present invention eliminates the top plate even in a portable work table in which the main leg is opened outward and the top board is installed in the middle of the main leg. It can be positioned close to the wall or the like that is the work location, and even when a handrail is provided rotatably at the upper end, the drawer of the handrail does not interfere with the worker standing on the top plate, A portable worktable that can improve workability is provided.

The present invention according to claim 1 is a portable work table in which a top plate is installed between a pair of ladder-shaped main legs, the upper portion of which is pivotally mounted and tilted outwardly downward. One end is pivotally attached to one main leg, the other end protrudes outward from the other main leg, and a support member for supporting a handrail is attached to the upper end of the one main leg. The gist is that a fixing bracket for fixing the handrail is attached to the member, and a handrail formed in a U-shape that protrudes in the same direction as the protruding direction of the top plate is attached so as to be able to protrude and retract in the vertical direction from the main leg. Is.

  According to the first aspect of the present invention, since one end of the top plate is protruded outward from the main leg, the top plate can be disposed close to a wall surface or the like that is a work location, which is safe and work can be performed. It becomes easy to do. In addition, the handrail attached to the upper end of the main leg is pulled out from the main leg and then rotated in the horizontal direction to reach the installation position. Therefore, even if there is an operator on the top board, it does not get in the way.

Further, when the handrail pulled out from the main leg is rotated to a position where it comes into contact with the support member, the handrail is automatically set at a predetermined position while being placed on the support member. And if a handrail is fixed to a support member with a fixing metal fitting in this state, it can prevent that a handrail is fixed and remove | deviates during a work, and can ensure safety.

  According to a second aspect of the present invention, the handrail is provided with a guide projection on the outer side of the U-shaped opening side, and an engagement member in which a guide long hole in which the guide projection slides is formed along the length direction. The gist is that it is mounted in the main leg.

  According to the second aspect of the present invention, the guide rail provided on the handrail slides along the guide long hole formed in the engaging member, so that the handrail is pulled out from the main leg or in the main leg. Stored. Then, after sliding and pulling upward, the tip is turned downward to be set at a substantially horizontal predetermined position. To store, the operation is reversed.

  As described above, the portable worktable of the present invention is a portable worktable in which the main leg is opened outward and the top board is installed in the middle of the main leg. Because it protrudes outward from the main leg, it can be positioned close to the wall surface etc. which is the work place, and even when a handrail is provided rotatably on the upper end of the main leg, Since the handrail can be stored in the main leg and pulled upward from here to rotate downward, it is set at a predetermined position, so that the handrail drawer can interfere with the worker standing on the top plate. Therefore, workability can be improved.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view showing an embodiment of a portable worktable of the present invention, FIG. 2 is a front view of the same, FIG. 3 is a side view of a folded state, and the portable worktable of the present invention is basically the same as in the prior art. As a structure, a ladder-like main leg 3 was formed by attaching a foot rail 2 at an appropriate interval between a pair of column legs 1 having handrail column parts 4 extending on the upper part.

  In the present invention, a pair of the main legs 3 are made to face each other, one main leg 3 is made longer, and the other main leg 3 is made slightly shorter than this, and slightly longer than the upper end of the long main legs 3. The upper end of the short main leg 3 is pivotally attached to the lower position with a folding hardware 9.

  The top plate 6 is foldably hung between the main legs 3 at the upper position of the support leg 1. The top plate 6 is pivotally attached to the long main leg 3 at one end, and the other end is formed to have a width projecting outward from the short main leg 3 in a horizontal use state. In the figure, reference numeral 7 denotes an arm-like stay whose one end is pivotally attached to the lower surface of the top plate 6 and the other end is pivotally attached to the step rail 2 attached to the short main leg 3. Show.

  A handrail 8 protruding in the same direction as the protruding direction of the top plate 6 is attached to the upper end of the long main leg 3 so as to be able to protrude and retract in the vertical direction from the main leg 3.

  As shown in FIG. 4, the handrail 8 is formed in a U-shaped plane, and as a mounting structure thereof, a guide projection 10 is provided on the outer side of the U-shaped opening side, and on the other hand, as shown in FIGS. A guide elongated hole 11 in which the guide projection 10 slides inside the support leg 1 is fixed with an engagement member 14 having a U-shaped cross section formed along the length direction of the support leg 1, and the upper end of the support leg 1 is a handrail. 8 was formed in the opening so as to be able to rotate and move up and down.

  Further, a support member 12 that is supported from below is attached to the upper end side portion of the column leg 1 in a state where the handrail 8 is pulled out, and a fixing bracket 13 that fixes the handrail 8 is attached to the support member 12.

  The fixing bracket 13 is formed in an L shape, and is configured to be pivotally attached to the support member 12 so as to be pivotable in the vertical direction and to be covered with the handrail 8 at the upper pivot position.

  The length of the handrail 8 in the projecting direction is set so that the projecting end portion is substantially at the same position as the projecting end portion of the top plate 6. Further, the handrail 8 is inclined so that the upper surface of the support member 12 is directed upward by about 7 degrees, for example, so that the front end is slightly upward in the protruding state.

  Next, the usage will be described. When not in use, as shown in FIG. 3, the long main leg 3 and the short main leg 3 are folded in parallel with the folding hardware 9 as the central axis. In this state, one end of the stopper metal fitting 7 and the top plate 6 is rotated via a pivot shaft attachment portion with each main leg 3, and between the long main leg 3 and the short main leg 3. The other end moves upward and is folded flat.

  Further, the fixing bracket 13 is removed from above the support member 12 in a state of being rotated downward, and the handrail 8 is housed inside the column leg 1 as the guide protrusion 10 moves downward along the guide long hole 11. Is in a state.

  In order to use the work table from this state, if the long and short main legs 3 are turned left and right in FIG. Following this, the top plate 6 and the stay 7 are also rotated downward about the pivoting portions of the main legs 3 and moved to a horizontal position between the long and short main legs 3 and 3.

  In this horizontal position, the top plate 6 is placed on a top plate receiving material using a crosspiece 2 provided on the main leg 3 in the middle, and is supported from below by this top plate receiving material. And since the top plate 6 protrudes outward from the main leg 3 on the opposite side to the pivot shaft attachment portion, the top plate 6 can be positioned in the vicinity of a work location such as a wall surface, Workability can be improved.

  Further, since the opposing main legs 3 and 3 are formed to have one long and the other short, the upper pivot shaft attachment portion is not located at the upper end of the long main leg 3, and more than this. Since it is in the lower position, the short main leg 3 leans against the long main leg 3, and the stability can be increased compared to the case where the opposing main leg is pivotally attached at the upper end.

  Next, a method for setting the handrail 8 will be described. The handrail 8 housed in the support leg 1 is slid upward along the support leg 1 and pulled up. When the opening end of the handrail 8 is pulled up to the upper end of the support leg 1, the handrail 8 is rotated in the lower horizontal direction around the lower end.

  At the substantially horizontal position, the handrail 8 abuts on the support member 12 attached to the support leg 1, and is prevented from further rotation and is locked at the substantially horizontal position. Next, if the fixing bracket 13 is rotated upward so as to be put on the handrail 8, the handrail 8 is fixed on the support member 12, that is, on the upper end portion of the column base 1.

  Therefore, there is no possibility that the handrail 8 will come off during work, and work safety can be ensured. Further, since the handrail 8 can be set by pulling upward and rotating in the horizontal direction, it does not interfere with the worker who is placed on the top plate 6.

  And since the handrail 8 is located above the top plate 6 which protrudes from the main leg 1 in the outward horizontal direction, it is possible to ensure the safety of the worker who works on the protruding portion of the top plate 6.

It is a side view which shows embodiment of the portable worktable of this invention. It is a front view which shows embodiment of the portable worktable of this invention. It is a side view of the folded state which shows embodiment of the portable worktable of this invention. It is a vertical side view of the handrail part which is the principal part which shows embodiment of the portable worktable of this invention. It is a cross-sectional top view of the attachment part of the handrail which shows embodiment of the portable worktable of this invention. It is a perspective view of the conventional portable worktable.

DESCRIPTION OF SYMBOLS 1 Prop leg 2 Step rail 3 Main leg 4 Handrail support | pillar part 5 Handrail 6 Top plate 7 Stay 8 Handrail 9 Folding metal 10 Guide protrusion 11 Guide long hole 12 Support member 13 Fixing bracket 14 Engagement member

Claims (2)

In a portable work table in which an upper part is pivotally mounted and a top plate is installed between a pair of ladder-like main legs that are inclined outwardly downward, the top plate has one end as one main leg. A pivot bracket is pivotally attached, the other end protrudes outward from the other main leg, a support member for supporting the handrail is attached to the upper end of the one main leg, and a fixing bracket for fixing the handrail to the support member is provided. A portable work table , wherein a handrail formed in a plane U shape protruding in the same direction as the protruding direction of the top plate is mounted so as to be able to protrude and retract in the vertical direction from the main leg.   The handrail is provided with a guide projection on the outer side of the end portion on the side of the U-shaped opening, and an engagement member formed along the length direction of a guide long hole through which the guide projection slides is attached in the main leg. The portable work table according to 1.

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