JP2010159629A - Handrail used for portable work platform - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a handrail which can simply be installed in a portable work platform with a handhold member by using the handhold member, while assembly on an upper part of a top plate is easy and simple, and safety is enhanced by preventing occurrence of accidents of falling and crashing from the top plate. <P>SOLUTION: The handrail is installed in the portable work platform, wherein ladder-like main legs 4 formed by attaching a plurality of rungs between a pair of support legs in a suitable manner, and the rectangular top plate 3 freely turnably attached between the pairs of the ladder-like main legs 4 to allow the main legs 4 to be folded to the rear side of the top plate 3. Further, rod-like handhold members 6 are erected freely turnably from the main legs 4 with attaching pieces at four corners of the top plate 3, i.e., are positioned at a hatch formed by the main legs 4 and the top plate 3. The handrail comprises handrail supports 9 and a hand rail beam 10, and the handrail supports 9 and the handrail beam 10 are formed of square pipe of a synthetic resin, and the handrail support 9 is a sheathing tube for removably covering the handhold member. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a handrail member used for a portable work table used for a construction work site, interior / exterior work such as a ceiling or wall of a building, electric wiring work, and the like.

Such a portable work table 1 is also disclosed in Patent Document 1 below. Conventionally, as shown in FIG. 14, for example, as shown in FIG. 14, a plurality of step bars 5 are attached at appropriate intervals between a pair of support legs 4a. 4, a rectangular top plate 3 is rotatably mounted between a pair of the ladder-shaped main legs 4, and a stay 7 that is bendable between the top plate 3 and the main legs 4 is provided. It is intervening.
Patent No. 2989166 (Aluminum portable worktable)

  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.

  The clue member 6 serves as a clue when the operator moves up and down on the top plate 3 as a work table or works on the top plate to improve safety and workability. 4 is foldable so that it can be erected at the four corners of the top 3.

  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. Cannot be achieved completely.

Therefore, as shown in FIG. 15, as shown in FIG. 15, as a means for preventing the fall from the top plate 3, a U-shaped frame-shaped handrail 21 is separately prepared, Therefore, it is separately provided between the clue members 6.
JP 2001-152659 A (Portable worktable)

  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 top plate 3 from falling or falling.

  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, 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 a space for transportation and storage is required, which is troublesome.

  Incidentally, in the case of Patent Document 2 as well, the handrail 21 is fixed to the top plate 3 by providing a special fixing member at the lower part of the vertical rail extending from the horizontal rail of the handrail. However, it is difficult to balance with ease of attachment / detachment in order to improve the safety, and the attachment / detachment is troublesome.

  An object of the present invention is to eliminate the disadvantages of the conventional example, and in a portable work table having a clue member, a handrail can be easily installed by using this clue member, and the top of the top plate is It is an object of the present invention to provide a handrail member for use in a portable work bench that can be easily and easily assembled, can prevent a fall / fall accident from the top plate, and can improve safety.

  In order to achieve the above object, the present invention forms a ladder-shaped main leg by appropriately attaching a plurality of step bars between a pair of support legs, and forming a rectangular top plate between the pair of ladder-shaped main legs. The main leg can be folded along the back side of the top plate so that the main leg can be folded along the back of the top plate. It is a handrail member consisting of a handrail post and a handrail bar provided on a portable worktable that stands upright with a mounting piece. These handrail post and handrail bar are formed with a square pipe made of synthetic resin, and the handrail post is a clue member. The gist of the invention is that the sheath tube is detachably covered.

  According to the first aspect of the present invention, the handrail member is a sheath tube that covers the handrail column on the handhold member, so that the handrail member can be provided firmly and easily on the portable work table without taking up space. In addition, since the handrail bar is stretched between the clue members in the standing state, the handrail bar can be supported using the strength of the handhold member.

  In addition, the handrail support by the sheath tube can be removed from the handhold member by attaching it to the handhold member, and the handrail member can be made an optional product. Can be provided.

  Furthermore, the handrail bar can be folded along the handrail column, and the handrail column can be folded along the main leg, so that the handrail member can be folded along the main leg as well. At the same time, it can be accommodated along the main legs of the ladder. In use, it is convenient to spread.

  As described above, the handrail member used in the portable worktable of the present invention is a portable worktable provided with a clue member, and the handrail can be easily installed by using this handhold member. The support column is a sheath tube that covers the clue member, and the handrail bar is pivotally attached to the handrail support column. A handrail can be easily provided on the top plate without providing a handrail member separately and without requiring a special tool.

  In addition, no special storage space or transport space is required for the handrail post or rail, and it can be folded flat in parallel with the main leg during storage and transport, making it compact.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 is a front view showing an embodiment of a portable worktable provided with a handrail member 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 shown in FIGS. Since it is basically the same as the conventional example shown, the same reference numerals are assigned and detailed description thereof 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 pivotably mounted between a pair of 4 so that the main leg 4 can be folded along the back side of the top plate, and can be bent between the top plate 3 and the main leg 4 in the middle. The stay 7 is installed. Both ends of the stay 7 are pivotally attached to the tread bar 5 and the top plate 3 of the main leg 4, respectively. After the work is completed, the stay 7 is bent at the bent portion, and the work table 1 can be folded and moved. Yes.

  Further, the bar-like clasp member 6 is erected from the main leg 4 by the attachment piece 22 so as to be positioned at the four corners of the top board 3, that is, at the elevators between the main leg 4 and the top board 3. These main legs 4, top plate 3 and clue member 6 are made of aluminum. When the top plate 3 is shown in FIG. 12, burring holes 3a for preventing slipping are scattered, and a plate 3b for preventing stepping off is attached to the left and right wives.

  The clue member 6 serves as a clue when an operator moves up and down on the top plate 3 as a workbench, or works on the top plate, and improves safety and workability. The main leg 4 extending from the corner of the top plate 3 or from the corner of the top plate 3 can be folded along the longitudinal member of the main leg 4 extending from the corner of the top plate 3 from the standing position. It is attached to.

  The standing and folding mechanism of the clue member 6 will be described in detail. As shown in FIG. 16, the groove portion 23 of the attachment piece 22 of the clasp member 6 fixed to the upper portion of the main leg 4 extending from the even angle portion of the top plate 3 is shown. The clue member 6 is attached to the first pin member 24 so that both of the clasp members 6 are pivotally mounted. The through hole 25 of the clasp member 6 through which the first pin member 24 is inserted is formed by the first pin member 24. It is formed in a slot shape so that it can move.

  A second pin member 26 that is inserted through the clue member 6 is provided at a position away from the first pin member 24, and the first pin member 24 and the second pin member 26 that are located inside the clue member 6 are provided. The protrusion 28 of the second pin member 26 that is connected by the spring 27 and protrudes from the clue member 6 has the force of the spring 27 applied to the notches 29 and 29 formed in the upper part of the mounting piece 22 as shown in FIG. Thus, the clue member 6 is brought to a position erected on the corner of the top plate 3. In this case, the first pin member 24 is located at the upper end of the slot-like through hole 25.

  In order to fold the clue member 6, as shown in FIG. 17, the clasp member 6 is pulled upward (in the direction of the arrow X) against the force of the spring 27, and rotated downward from the standing position A to fold. When brought to the position B, the clue member 6 is moved upward (in the direction of arrow Y) by the action of the spring 27, and the protruding portion 28 of the second pin member 26 is formed at the lower portion of the mounting piece 22, As a result, the clue member 6 is folded along the side surface of the main leg 4. In this case, the first pin member 24 is located at the lower end of the slot-like through hole 25.

  The handrail member 8 of the present invention is composed of a handrail column 9 made of a sheath tube that covers the clue member 6, and the handhold member 10 in a standing state and a handrail bar 10 that spans between the handrail columns 9.

  As shown in FIG. 11, the clue member 6 is an aluminum alloy extruded alloy tube having a substantially rectangular cross section. A tubular body having a peripheral surface.

  The handrail support 9 that covers the clue member 6 is fixed to the clasp member 6 by a bolt 11 that penetrates both.

  A handrail bar 10 parallel to the longitudinal direction of the top plate 3 may be fixedly provided on such a handrail support column 9 so that the entire shape may be U-shaped.

  In the present invention, as a further contrivance, the handrail bar 10 parallel to the longitudinal direction of the top plate 3 is a divided body, and the single body has a length about one-half of the length of the top plate 3 in the length direction. However, one end is pivotally attached to the upper part of the handrail column 9 by a pin so that it can be folded along the handrail column 9.

  When the handrail bar 10 as the divided body is erected, the handrail bar 10 extends horizontally from the front end of the handrail column 9 along the longitudinal direction of the top plate 3 when the clue member 6 and the handrail column 9 are erected. The handrail bar 10 that protrudes to the opposite side and faces the handrail bar 10 is opposed by the connecting member 31 (see FIGS. 18 to 20).

  The interconnecting portion at the projecting tip of the handrail bar 10 is provided with a bar-like connecting member 31 projecting toward the other handrail bar 10 on one handrail bar 10 so as to be able to move in and out, and the other handrail bar 10 that collides A hollow insertion portion 32 into which the connecting member 31 is inserted is formed (see FIG. 13), and the hollow insertion portion 32 uses a tubular body made of an aluminum extruded alloy forming the handrail 10.

  A lock display portion 34 in a protruding connection state and a release display portion 33 in an immersive and non-connected state are provided on the side surface of the connection member 31, and the lock display portion 34 and the release display portion 33 are different from each other, for example, a lock portion. The display unit 34 is formed in blue and the release display unit 33 is formed in red, and a knob 12 for sliding the connecting member is provided at the boundary between the lock display unit 34 and the release display unit 33.

  The lock display unit 34 and the release display unit 33 may be formed by applying paints of the respective colors, but a plastic plate or tape colored in these colors may be attached.

  The knob 12 is attached by screwing it into the connecting member 31 using, for example, a bolt.

  In the figure, reference numeral 13 denotes a slot for allowing the movement of the knob 12 and a display window for revealing the lock display portion 34 and the release display portion 33. And the length of the cancellation | release display part 33 is formed equal to the length of this long hole 13, and red is displayed on the whole long hole 13 at the time of cancellation | release.

  The handrail bar 10 is a handrail bar for the longitudinal direction extending in the length direction of the top plate. This alone is sufficient, but it is also possible to dispose the handrail rail in the width direction of the top plate.

  The handrail bar 14 for the short-side direction in which the handrail bars are also arranged in the width direction of the top plate can be housed therein with the handrail bar 10 as a sheath tube, and one end of the handrail bar 10 in the longitudinal direction. It is pivotally attached and is hung on the opposite handrail bar 10 for the longitudinal direction.

  FIG. 13 shows each member. A bolt hole 15 a for penetrating the bolt 11 and a bolt hole 15 b for pivotally attaching the handrail bar 10 are provided in the handrail column 9, and a handrail bar 14 for the short direction is provided on the side surface side of one handrail bar 10. A window hole 16 is formed for accommodation, and an opening 17 into which the front end of the handrail bar 14 for the short direction is inserted is formed on the side surface of the other handrail bar 10.

  If the handrail support | pillar 9, the handrail crosspiece 10, and the handrail crosspiece 14 for a short direction which comprise the handrail member 8 are formed with the square pipe of a synthetic resin, it will become lightweight. In addition to the synthetic resin, a metal such as an aluminum alloy may be used as long as the shape does not hinder folding.

  In this way, the handrail bar 14 for the short-side direction has an end portion on the opposite side to the end portion that is axially attached to the handrail bar 10 for the longitudinal direction in the opening 17 on the side surface of the opposite handrail bar 10 for the longitudinal direction. The insertion is completed by inserting it into.

  Next, the usage will be described. As shown in FIG. 3, the handrail bar 14 for the short-side direction is housed in the handrail bar 10, the handrail bar 10 is folded along the handrail column 9, and the handrail column 9 is joined to the corner of the top plate 3 together with the clue member 6. It is folded along the vertical member of the main leg 4 extending from the corner. Further, the handrail bar 10 is folded along the handrail column 9, and the handrail bar 14 for the short direction is stored in the handrail bar 10.

  In order to use the portable worktable 1, the main leg 4 is opened and installed.

  As shown in FIGS. 4 and 5, the clue member 6 is erected and a handrail column 9 is erected along with the clue member 6, and in this state, the handrail bar 10 for the longitudinal direction is folded along the handrail column 9. Stands with 9

  When only the clasp member 6 is used as in the conventional portable workbench without the handrail member 8, if both the clasp member 6 and the handrail support column 9 are grasped together and moved up and down from the main leg 4 to the top plate 3, Good.

  As shown in FIG. 6, the handrail bar 10 folded along the handrail support column 9 is rotated from the state of FIG. 5 and protrudes horizontally along the longitudinal direction of the top plate 3 at the side upper part thereof. In this state, as shown in FIG. 19, the connecting member 31 is housed in the handrail bar 10 on the side where the long hole 13 is formed, and the red color of the release display portion 33 is positioned on the front end side in the sliding direction and is a long hole. This is shown in FIG.

  As shown in FIG. 7, since the tip of the handrail post 10 from the handrail post 9 facing the handrail post 10 from one handrail post 9 abuts, the connecting member 31 is slid from the handrail post 10 with the knob 12. It protrudes in the direction of the other handrail bar 10 and is inserted into the hollow insertion portion 32 and connected.

  Since the red release display portion 33 is inserted into the hollow insertion portion 32 by the sliding of the connecting member 31, the red color disappears from the long hole 13 and the blue color of the lock display portion 34 is displayed in the long hole 13. Thus, by visually observing this blue color, it can be confirmed that the handrail bars 10 are connected and locked.

  As shown in FIGS. 8 and 9, the handrail bars 10 and 10 are arranged in the longitudinal direction above the peripheral edge of the top plate 3, and then the handrails for the short direction stored in the handrail bars 10. The rail 14 is pulled out while being rotated, and the leading end thereof is inserted into the opening 17 of the opposed railing rail 10, and the rail rail 14 for the short direction is passed between the railing rails 10 as shown in FIG.

  Thereby, the handrail bars 14 for the short direction are arranged in the width direction above the peripheral edge of the top plate 3, and the handrail bars 10, 10 and the handrail rails 14 for the short direction are disposed above the peripheral edge of the top plate 3. Can be enclosed in

  In order to fold the handrail member 8 after use, an operation reverse to the above may be performed.

It is a front view which shows one Embodiment of the portable worktable which installed the handrail member of this invention. It is the side view after the assembly which shows one Embodiment of the portable work table which installed the handrail member of this invention. It is a front view which shows the 1st step in the assembly procedure which shows one Embodiment of the portable work bench | platform which installed the handrail member of this invention. It is a front view which shows a 2nd step among the assembly procedures which show one Embodiment of the portable work bench | platform which installed the handrail member of this invention. It is a front view which shows a 3rd step among the assembly procedures which show one Embodiment of the portable work bench | platform which installed the handrail member of this invention. It is a front view which shows a 4th step among the assembly procedures which show one Embodiment of the portable worktable which installed the handrail member of this invention. It is a front view which shows a 5th step among the assembly procedures which show one Embodiment of the portable work bench | platform which installed the handrail member of this invention. It is a side view which shows a 5th step among the assembly procedures which show one Embodiment of the portable worktable which installed the handrail member of this invention. It is a top view which shows a 5th step among the assembly procedures which show one Embodiment of the portable work bench | platform which installed the handrail member of this invention. It is a top view which shows a 6th step among the assembly procedures which show one Embodiment of the portable work bench | platform which installed the handrail member of this invention. It is a cross-sectional top view of the clue member of this invention and the handrail support | pillar which covers this. It is a top view of a top plate. It is a perspective view of the structural member of the handrail member 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. It is the perspective view which notched a part which shows the coupling mechanism of a clue member and an attachment piece. It is a partial front view which shows the standing and folding mechanism of a clue member. It is a perspective view which shows the connection member of the protrusion state of the handrail member of this invention. It is a perspective view which shows the connection member of the accommodation state of the handrail member of this invention. It is a perspective view of the connection member of the handrail member of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Portable work table 3 ... Top plate 3a ... Burring hole 3b ... Plate 4 ... Main leg 4a ... Post leg 5 ... Footing rail 6 ... Cue member 7 ... Stay 8 ... Handrail member 9 ... Handrail post 10 ... Handrail post 11 ... Bolt 12 ... Pick 13 ... Long hole 14 ... Handrail rail 15a, 15b for short direction ... Bolt hole 16 ... Window hole 17 ... Opening 21 ... Hand rail 22 ... Mounting piece 23 ... Groove portion 24 ... First pin member 25 ... Through hole 26 ... 2nd pin member 27 ... Spring 28 ... Protrusion part 29, 30 ... Notch part 31 Connection member 32 Hollow insertion part 33 Release | release display part 34 Lock | rock display part

Claims (1)

  A ladder-shaped main leg is formed by appropriately attaching a plurality of step bars between a pair of support legs, and a rectangular top plate is rotatably attached between the pair of ladder-shaped main legs. It can be folded along the back side of the top plate, and it is positioned at the four corners of the top plate, that is, at the elevator opening between the main leg and the top plate, and the rod-like cue member is erected from the main leg so that it can be rotated by the mounting piece. It is a handrail member consisting of a handrail post and a handrail bar provided on a portable workbench. A handrail member used for the portable worktable.

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