JP4791430B2 - Scaffolding plate fixture - Google Patents

Description

  The present invention relates to a scaffolding plate fixing tool for mounting and fixing a scaffolding plate on a single tube in a crossed state.

  Conventionally, in scaffolds constructed by assembling and building a scaffolding plate on a single pipe made of steel pipe, as a simple tool for fixing the scaffolding plate to a single pipe, there is a thick wire, a so-called wire, that binds the scaffolding plate to the single pipe Widely used. However, when assembling and constructing a scaffold using a number wire, it is necessary to tighten up the number of the wire wound around the scaffold plate and the single pipe one by one, and there is a problem that it takes time to fix the scaffold plate. .

  In addition, when dismantling a scaffold constructed using a number line, it is necessary to cut and remove the number line one by one using a tool such as a pliers, but the number line thus cut can be reused. It was not possible and a lot of used wires had to be disposed of as industrial waste.

  In addition, when dismantling the scaffolds built on the viaduct, the wire after cutting and removal may be accidentally dropped, for example, under an overpass such as a river or grass fence, and can be easily recovered. In some cases, it was left unattended and adversely affected the natural environment and ecosystem.

  Therefore, as a tool for fixing a scaffolding plate in place of such a wire, a scaffolding plate fixing device disclosed in Patent Documents 1 and 2 below has been proposed.

  The scaffold fixing device of Patent Document 1 includes a pressing plate placed on the scaffolding plate in the width direction, bolts inserted into both ends of the pressing plate, and a nut cylinder screwed to the bolts. And a substantially U-shaped locking member attached to the side surface of the nut cylinder and locked upward from the lower side to the single pipe, and a pressing plate interposed between the pressing plate and the scaffolding plate.

The scaffold plate fixing device of Patent Document 2 includes a main rod placed on the scaffold plate in the width direction, and a substantially C-shaped engagement bent at one end of the main rod and locked to a single tube. A stopper, a pair of substantially semicircular arc members pivotably attached to the other end of the main shaft, and a nut that surrounds the outer periphery of the single pipe by the pair of semicircular arc members and fastens the distal ends thereof And a fixed screw rod.
JP-A-11-159133 JP-A-8-226228

  However, since all of the above-mentioned conventional scaffold plate fixing devices are to join the single pipe and the scaffold plate using bolts and nuts, it is necessary to tighten bolts and nuts when assembling the scaffold, When the scaffold is dismantled, it is necessary to remove the bolts and nuts. Therefore, there is a problem that it takes time to fix and remove the scaffold plate.

  In addition, since handling of the bolt and nut is a fine work using a fingertip, it is difficult to screw the bolt into the nut in a state where work gloves or the like are filled, resulting in a reduction in work efficiency. Moreover, in such a scaffold plate fixing device, it is easy to accidentally drop the bolt or nut during the fixing operation with the bolt and nut, and the operator must always carry spare bolts and nuts, which is troublesome. was there.

  The present invention has been made to solve the above-described problems, and it is not necessary to use an old wire as an instrument for fixing a scaffold plate to a single pipe, and a scaffold can be simply used without using bolts and nuts. An object of the present invention is to provide a scaffolding plate fixture that can fix a plate to a single tube.

In order to achieve this object, the scaffold plate fixture according to claim 1 fixes a scaffold plate placed on the single tube in a state of intersecting the single tube, and the width of the scaffold plate. A holding rod having the above length, which is directed in the width direction of the scaffolding plate and can be placed on the scaffolding plate substantially parallel to the single tube, and the length of the scaffolding plate from the holding rod A pair of engagement hooks formed to be engageable with both end portions in the width direction of the scaffolding plate at positions far from the single tube at intervals in the direction, and the pair of engagement hooks are formed at the tip portions, respectively. In addition, base end portions are connected to both end portions of the holding rod, and extend downwardly from the both end portions of the holding rod toward the single tube, and bend along the lower outer periphery of the single tube. Formed and folded, extended upward and inclined toward the scaffold plate side, and the pair of engagement hooks on the scaffold plate Resiliently deflectable deformable formed toward the scaffolding plate side when it is engaged, and a pair of resilient arms in plan view Ru extending the same direction, both of which resilient arms , Is a dominant arc shape with an opening that is open upward so that a single pipe can be inserted into the inner circumference having a larger inner diameter than the outer diameter of the single pipe, and can be wound around the outer circumference of the single pipe. By being elastically bent and deformed toward the plate side, it is formed so that it can be elastically reduced in diameter so as to tighten a single tube, and becomes a medium that accumulates strain energy associated with the bending deformation of the elastic arm. Has a ring .

According to the scaffolding plate fixture of claim 1, the retaining rod is placed on the scaffolding plate, the pair of elastic arms are hidden under the single tube, and the pair of elastic arms are directed toward the scaffolding plate. The scaffolding plate is fixed to the single pipe by being elastically bent and the pair of engagement hooks being engaged with the both ends of the scaffolding plate in the width direction .

In addition, the scaffolding plate is pressed against the single tube by the retaining rod and the respective engaging hooks and is retained by the elastic restoring force accompanying the elastic deformation of the elastic arm. It is possible to prevent the plate from floating on the single tube or sliding on the single tube.

Here, when fixing the scaffolding plate to the single tube, after the retaining rod is placed on the scaffolding plate, each elastic arm is hidden under the single tube, and then the opening of the winding ring of each elastic arm is opened. The single tube is inserted into the inner peripheral portion of each winding ring through the portion, and the winding ring of each elastic arm is wound around the outer periphery of the single tube.

In a state where each winding ring is wound around the outer circumference of the single pipe, each elastic arm is bent toward the scaffold plate side in order to engage each engagement hook with both ends in the width direction of the scaffold plate. The energy acts as a force for elastically reducing the diameter of the winding ring to tighten the single tube and a force for holding the scaffolding plate by the holding rod and each engagement hook.

  The scaffolding plate fixture of claim 2 is the scaffolding plate fixture of claim 1, wherein the retaining rod, the pair of elastic arms, and the pair of engagement hooks are formed by bending a deformable rod-shaped elastic material. By doing so, it is formed integrally.

The scaffolding plate fixture according to claim 3 is the scaffolding plate fixture according to claim 1 or 2 , wherein the elastic arm is an extending portion inclined downward from an end of the holding rod. The proximal end arm piece bent at one end of the opening of the winding ring, and an extending portion inclined upward to the engagement hook arrangement side so as to form a substantially reverse C shape with the proximal end arm piece. The tip arm piece is bent at the other end of the opening of the winding ring.

According to the scaffold board fixture of claim 3, on which acts like a scaffold board fixture of claim 1 or 2, the resilient arms are each a pair of arm pieces consisting of a base end arm pieces and distal arm piece The winding ring is elastically reduced in diameter by being close to each other. Here, when the engagement hook is engaged with the scaffolding plate, the elastic arm is bent toward the scaffolding plate, but the deformation operation of the elastic arm at this time coincides with the operation of bringing the pair of arm pieces close to each other. . For this reason, if the elastic arm is bent and each engagement hook is engaged with the scaffolding plate, the winding ring can be reduced in diameter and tightly wound around the outer periphery of the single tube.

  On the other hand, in the elastic arm, the winding ring is elastically expanded by separating the pair of arm pieces from each other, and the opening of the winding ring is also expanded accordingly. If this opening is expanded and its width is equal to or greater than the single tube outer diameter, the single tube can be inserted into the inner periphery of the winding ring through this opening. When the single tube is inserted into the inner peripheral portion of the winding ring through the opening, the winding ring is reduced in diameter by the elastic restoring force of the winding ring and wound around the outer periphery of the single tube.

The scaffolding plate fixture according to claim 4 is the scaffolding plate fixture according to any one of claims 1 to 3 , wherein the winding ring is bent in a substantially U shape or an arc shape at a circumferential intermediate portion of the winding ring. It has a bay spring part that is formed in the radial direction.

  According to the scaffolding plate fixture of claim 1, the retaining rod is placed on the scaffolding plate, and each elastic arm is elastically bent toward the scaffolding plate while being hidden under the single pipe, By engaging the engagement hooks with both ends in the width direction of the scaffold plate, there is an effect that the scaffold plate can be easily fixed to the single tube.

  This eliminates the need for bolts and nuts, and eliminates the need for detailed work using fingertips that use them, so it can be installed smoothly even when working gloves are filled, improving work efficiency accordingly. The spare bolts and nuts are not required.

  In addition, the elastic arm uses the elastic strain energy (elastic restoring force) accompanying the bending deformation of the elastic arm itself as an urging force for holding the scaffold plate against the single tube. Further, there is an effect that the scaffold plate can be firmly fixed to the single tube without fixing the scaffold plate to the single tube using the nut.

  Therefore, unlike the above-described conventional scaffold plate fixing device, the fixing work using the bolts and nuts is not necessary, and the bolts and nuts are not required to be removed when the scaffold is disassembled. There is an effect that the work and the removal work can be simplified.

  In addition, the winding ring of the elastic arm can be a medium that accumulates strain energy accompanying the bending deformation of the elastic arm. In addition, the winding ring is elastically reduced in diameter and tightens the single pipe, thereby preventing the sliding movement of the single pipe and providing an effect that the elastic arm can be firmly fixed to the single pipe.

  According to the second aspect of the present invention, in addition to the effect exerted by the first aspect of the first aspect of the present invention, the anchoring rod, the pair of elastic arms, and the pair of engaging hooks bend and deform a rod-shaped elastic material. By doing so, it is integrally formed, and there is no need to configure each part with parts that can be separated individually. For this reason, it is not necessary to fasten each site | part of a scaffold board fixing tool using fasteners, such as a volt | bolt and a nut, and there exists an effect that the complexity at the time of the fixing work of a scaffold board can be eliminated. In addition, since there is no fear that the parts of the scaffolding plate fixing device are separated and lost, there is an effect that the storage until the scaffolding plate fixing device is reused is easy.

According to the scaffolding plate fixture of claim 3 , in addition to the effect produced by the scaffolding plate fixture of claim 1 or 2 , the elastic arm can be wound by operating the pair of arm pieces to approach or separate from each other. There is an effect that the diameter of the wearing ring can be reduced or increased, or the opening of the winding ring can be enlarged or reduced.

According to the scaffolding plate fixture of claim 4 , in addition to the effect exerted by any of the scaffolding plate fixtures of claims 1 to 3, since the winding ring has a bay spring portion, the bay spring portion There is an effect that the winding ring can be smoothly reduced in diameter or increased in diameter by elastic deformation. In addition, even if there is a dimensional error between the inner diameter of the winding ring and the outer diameter of the single pipe, or there is a mismatch in the shape of the winding ring or the single pipe, it is caused by the elastic deformation of the bay spring part. The dimensional error and the shape mismatch can be absorbed or eliminated, and the adhesion between the winding ring and the single tube can be improved.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is an external perspective view of a scaffold board fixture 1 according to an embodiment of the present invention.

  As shown in FIG. 1, the scaffolding plate fixture 1 includes a substantially straight rod-shaped retaining rod 2 and a pair of elastic arms 3 and 3 provided at both ends in the axial direction (longitudinal direction) of the retaining rod 2. A pair of engaging hooks 4, 4 provided at the tip portions of the pair of elastic arms 3, 3 are provided. These retaining rods 2, the pair of elastic arms 3, 3 and the pair of engaging hooks 4, 4 are a single elastically deformable rod-shaped elastic material such as a piano wire or spring steel. It is integrally formed by bending a round bar using a metal material having

  In addition, FIG. 1 illustrates the case where a piano wire round bar having an outer diameter of approximately 3 mm to 5 mm is used as the material of the scaffold plate fixture 1.

  FIG. 2 is a perspective view showing a state in which the scaffold plate 11 and the single tube 12 are fixed by the scaffold plate fixture 1. As shown in FIG. 2, the scaffold plate fixing tool 1 fixes the scaffold plate 11 placed on the single tube 12 to the single tube 12 in a state of crossing the single tube 12. . The retaining rod 2 is a substantially linear round bar having a length equal to or greater than the width of the scaffold plate 11, and is formed so as to be placed on the scaffold plate 11 in the width direction of the scaffold plate 11. Yes.

  FIG. 3 is a plan view of the scaffold plate 11 and the single tube 12 fixed by the scaffold plate fixture 1 shown in FIG. As shown in FIG. 3, the retaining rod 2 is placed on the scaffold plate 11 in a state substantially parallel to the single tube 12. Further, the pair of engagement hooks 4, 4 are engaged by being hooked on both ends in the width direction of the scaffold plate 11.

  The pair of engaging hooks 4, 4 are respectively engaged at positions spaced apart from the retaining rod 2 in the length direction of the scaffold plate 11, and these engaging positions are separated from the retaining rod 2. As a result, it is further away from the position where the single tube 12 is disposed. As a result, the retaining rod 2 and the pair of engaging hooks 4 and 4 are disposed substantially symmetrically on the scaffolding plate 11 with the single tube 12 interposed therebetween when the scaffolding plate fixture 1 is viewed in plan view. Become.

  The pair of elastic arms 3 and 3 are bent substantially at right angles to both ends in the axial direction of the retaining rod 2 when the scaffolding plate fixture 1 is viewed in plan, and are in the same direction (right side in FIG. 3). It is extended substantially in parallel. The pair of engaging hooks 4 and 4 are bent substantially at right angles to the distal ends of the elastic arms 3 and 3 when the scaffolding plate fixture 1 is viewed in plan, and the distal ends thereof are opposed to each other. Yes.

  4 is a side view of the scaffolding plate fixture 1 shown in FIG. 2, and FIG. 5 is a side view of the scaffolding plate fixture 1, with the engagement hooks 4 and 4 being detached from the scaffolding plate 11. As shown in FIG. FIG. 6 is a side view of the scaffolding plate fixing device 1 and shows a state in which the winding ring 6 is detached from the single tube 12.

  As shown in FIG. 4, the elastic arm 3 has an end portion of the retaining rod 2 connected to the base end portion thereof, and an engagement hook 4 formed at the distal end portion thereof. The elastic arm 3 is bent along the lower end of the single tube 12 and a proximal arm piece 5 that extends downwardly and inclines toward both ends of the single tube 12 from both axial ends of the retaining rod 2. A winding ring 6 that is folded back and a tip arm piece 7 that is extended upwardly and inclined toward the scaffold plate 11 side.

  The winding ring 6 can be wound around the outer periphery of the single tube 12 and is formed in a substantially arc-shaped (C-shaped) shape that is an arc having a larger circumference than a semicircle, and is opened upward at the upper periphery of the outer periphery. An opening 8 is provided. The opening 8 of the winding ring 6 is an insertion port for inserting the single tube 12 into the inner peripheral portion of the winding ring 6, and the winding ring 6 is elastic due to the presence of the opening 8. In general, the diameter can be increased and decreased.

  Further, at each end of the opening 8 of the winding ring 6, the pair of arm pieces 5, 7 is bent in a substantially square shape, one by one. In particular, one end (upper left side in FIG. 4) of the base end arm piece 5 is connected to the axial end of the retaining rod 2, and the other end (lower right side in FIG. 4) is the opening 8 of the winding ring 6. Are connected to one end (left side in FIG. 4). Furthermore, the tip arm piece 7 has one end (lower left side in FIG. 4) connected to the other end (right side in FIG. 4) of the opening 8 of the winding ring 6 and the other end (upper right side in FIG. 4) is engaged. The hook 4 is connected to the hook 4.

  The pair of arm pieces 5, 7 extend upward from the opening 8 of the winding ring 6 so as to form a substantially inverted C shape, and the base end portions of the pair of arm pieces 5, 7 The opening 8 of the winding ring 6 is located between them. Further, at the symmetrical position of the opening 8 in the winding ring 6, a bay spring portion 9 is formed in the radial direction of the winding ring 6, and the bay spring portion 9 is connected to the winding ring 6. Is formed in a substantially U-shape at a circumferential intermediate portion thereof.

  In addition, the shape of the bay spring part 9 is not necessarily limited to a substantially U shape, and may be, for example, a substantially semicircular shape or an arc shape having a shorter arc length.

  The elastic arm 3 configured in this manner is formed so as to be elastically bent and deformable toward the upper surface side of the scaffolding plate 11, and the tip arm piece 7 extends from the position shown in FIG. 5 to the position shown in FIG. 4. By being bent and deformed, the engagement hook 4 is formed on the scaffold plate 11. Moreover, the elastic ring 3 is elastically bent and deformed toward the scaffold plate 11 in this way, so that the winding ring 6 can be elastically reduced in diameter so as to tighten the single tube 12.

  As shown in FIG. 5, the inner diameter of the winding ring 6 is slightly larger than the outer diameter of the single tube 12, but is larger. Therefore, as shown in FIG. 4, when the elastic arm 3 is bent toward the scaffold plate 11 in order to engage the engagement hook 4 with the scaffold plate 11, the elastic strain energy is applied to the winding ring 6. It acts as a force for elastically reducing the diameter and tightening the single tube 12 or as a biasing force for holding the scaffolding plate 11 by the holding rod 2 and the engagement hooks 4 and 4.

  Moreover, since the wrapping spring portion 9 exists in the winding ring 6, there is a dimensional error between the inner diameter of the winding ring 6 and the outer diameter of the single tube 12, or the winding ring 6 or the single tube Even if there is a mismatch in the shape of 12, the bay spring part 9 can be elastically deformed to absorb or eliminate such a dimensional error or mismatch, and the adhesion between the winding ring 6 and the single tube 12 is improved. .

  Next, the usage method of the scaffold board fixing tool 1 is demonstrated. According to the scaffolding plate fixture 1 configured as described above, when the scaffolding plate fixture 1 is attached as shown in FIG. 2, first, after the retaining rod 2 is placed on the scaffolding plate 11, As shown in FIG. 6, the pair of elastic arms 3 and 3 are hidden below the single tube 12. Then, when each of the elastic arms 3 and 3 is opened so that the pair of arm pieces 5 and 7 are separated from each other, the diameter of the winding ring 6 is elastically increased, and accordingly the opening of the winding ring 6 is opened. Part 8 is expanded.

If the opening 8 is expanded and the width is equal to or larger than the outer diameter of the single tube 12 as shown in FIG. 6, the single tube 12 is inserted into the inner peripheral portion of the winding ring 6 through the opening 8. After the insertion, as shown in FIG. 5, the winding ring 6 is reduced in diameter by the elastic restoring force of the winding ring 6 and wound around the outer periphery of the single tube 12. When the winding ring 6 of each elastic arm 3, 3 is thus wound around the outer periphery of the single tube 12, each elastic arm 3, 3 is elastically bent toward the scaffold plate 11 side, A pair of engagement hooks 4, 4 are engaged with both ends in the width direction of the scaffold plate 11.

  Specifically, when the distal arm piece 7 of each elastic arm 3, 3 is grasped and the distal arm piece 7 is pulled up toward the scaffold plate 11 so as to be close to the proximal arm piece 5, Since the arm piece 7 is elastically bent and deformed from the position shown in FIG. 5 to the position shown in FIG. 4, at this time, the engaging hooks 4 and 4 are hooked on both ends in the width direction of the scaffold plate 11 to be engaged. To make it happen.

Then, the elastic restoring force of the elastic arm 3 is generated along with the bending deformation of the tip arm piece 7 accompanying the engagement of the engagement hook 4 with the scaffolding plate 11, and the scaffolding plate 11 is caused by this elastic restoring force. The single rod 12 is pressed against the single tube 12 by the holding rod 2 and the engagement hooks 4, 4 and is fixed to the single tube 12. Moreover, since the winding ring 6 is elastically reduced in diameter with the bending deformation of the distal arm piece 7 for engaging the engagement hook 4 with the scaffold plate 11, the winding ring 6 has an outer periphery of the single tube 12. Thus, the coupling force between the elastic arms 3 and 3 and the single tube 12 is increased.

  As described above, according to the scaffolding plate fixture 1 of the present embodiment, the retaining rod 2 is placed on the scaffolding plate 11 and the winding ring 6 is simply mounted without using bolts and nuts. The scaffolding plate 11 can be easily fixed to the single tube 12 by being wound around the tube 12 and hooking the engagement hooks 4 and 4 on both ends in the width direction of the scaffolding plate 11. For this reason, in the assembly work of a scaffold, the detailed work which uses a fingertip like the tightening work of a bolt and a nut becomes unnecessary. In addition, the scaffold plate 11 can be firmly fixed to the single tube 12 using the elastic strain energy of the elastic arms 3 and 3.

  Therefore, since the work of strongly tightening the numbered wires one by one is not required for the scaffold plate fixing method using the conventional numbered wires, the work can be speeded up accordingly. In addition, a large number of used wire lines do not become industrial waste, and resources can be used effectively without waste. In addition, the used wire is not left unrecovered in the natural world, and the natural environment and ecosystem are preserved.

  The present invention has been described based on the embodiments. However, the present invention is not limited to the above-described embodiments, and various improvements and modifications can be easily made without departing from the spirit of the present invention. It can be guessed.

It is an external appearance perspective view of the scaffold board fixture which is one Example of this invention. It is the perspective view which showed the fixed state of the scaffold board and single pipe | tube by a scaffold board fixture. It is a top view regarding FIG. It is a side view of the scaffold board fixing tool shown in FIG. It is a side view of a scaffold board fixing tool, Comprising: The state which the engagement hook removed from the scaffold board is illustrated. It is a side view of a scaffold board fixing tool, Comprising: The state where the winding ring was removed from the single pipe is illustrated.

DESCRIPTION OF SYMBOLS 1 Scaffold plate fixing tool 2 Holding rod 3, 3 Elastic arm 4, 4 Engagement hook 5 Base end arm piece (one of a pair of arm pieces)
6 Winding ring 7 Tip arm piece (the other of the pair of arm pieces)
8 Opening (opening of winding ring)
9 Wansen spring part 11 Scaffold plate 12 Single pipe

Claims (4)

In the scaffolding plate fixture that fixes the scaffolding plate placed on the single tube in a state intersecting with the single tube,
A holding rod having a length equal to or greater than the width of the scaffold plate, and being formed so as to be placed on the scaffold plate substantially parallel to the single pipe and directed in the width direction of the scaffold plate;
A pair of engagement hooks formed to be able to engage with both ends in the width direction of the scaffolding plate at a position farther from the single tube at a distance from the retaining rod in the lengthwise direction of the scaffolding plate,
The pair of engaging hooks are formed at the distal end portions, and the base end portions are respectively connected to both end portions of the retaining rod, and extend downwardly from the both end portions of the retaining rod toward the single tube. When the pair of engaging hooks are engaged with the scaffolding plate, bent along the outer peripheral lower side of the single pipe, folded back, extended upwardly toward the scaffolding plate side, and resiliently deflectable deformable formed toward the scaffolding plate side, and a pair of resilient arms Ru extending in the same direction to each other in plan view,
Each of the elastic arms is formed in a dominant arc shape having an opening opened upward so that a single tube can be inserted into an inner peripheral portion having a larger inner diameter than the single tube outer diameter, and can be wound around the outer periphery of the single tube. The elastic arm is elastically bent and deformed toward the scaffold plate, so that it can be elastically reduced in diameter so as to tighten a single tube, and accumulates strain energy associated with the elastic arm. A scaffolding plate fixture comprising a winding ring that serves as a medium to perform .   2. The pressing rod, the pair of elastic arms, and the pair of engagement hooks are integrally formed by bending a rod-shaped elastic material that can be bent and deformed. Scaffolding board fixture. The elastic arm is an extended portion inclined downward from an end portion of the holding rod, the proximal arm piece bent at one end of the opening of the winding ring, and the proximal arm piece. An extending portion that is inclined upwardly toward the engagement hook so as to form a reverse C-shape, and the distal end arm piece that is bent at the other end of the opening of the winding ring. The scaffolding plate fixture according to claim 1 or 2, characterized in that. The wrapping spring portion that is bent in a substantially U shape or a substantially arc shape in a circumferential middle portion of the winding ring and is formed in a radial direction of the winding ring is provided. The scaffolding plate fixture according to any one of 1 to 3 .

Images