JP5558056B2 - Fasteners for fixing the scaffolding board - Google Patents

Description

  The present invention relates to a fastener for fixing a scaffolding plate disposed on a horizontal beam member to the horizontal beam member, and more particularly, to a fastener that can be removed from the horizontal beam member and used repeatedly.

  When constructing or renovating buildings, scaffolding equipment is temporarily installed around or inside the building for workers to perform building work, and civil engineering work is also performed when building foundation panels on the ground. Scaffolding device is built on the ground. As such a scaffold device, there is a type in which a rectangular building frame provided with horizontal beam members is arranged at a predetermined interval, and a scaffold plate is attached to the horizontal beam members of two adjacent building frames. is there. As described in Patent Document 1, this type of scaffold device uses a scaffold plate provided with hooks, that is, claw portions, at both ends, and the scaffold plate is hooked on a horizontal beam member at the hook portion. Is attached. Such a scaffold board having hooks at both ends is also called a cloth board.

  On the other hand, depending on the site where the scaffold device is provided, as described in Patent Document 2 and Patent Document 3, a scaffold plate in which hooks are not provided at both ends is used. In order to fix the scaffold plate not provided with the hook to the horizontal beam member, as described in Patent Document 2, the scaffold plate is attached to the horizontal beam using a binding band such as a metal band made of steel or a wire. It is fixed to the material.

JP 2003-253877 A Japanese Utility Model Publication No. 57-192353 JP 2001-49623 A

  As described above, when the scaffolding plate is fixed to the horizontal beam using a binding device such as a band, when the scaffolding plate is fastened to the horizontal beam, the metal binding made of steel is bent. It is necessary to use a fastening tool, and it takes time to fasten the scaffolding plate. On the other hand, after the construction work and civil engineering work are completed using the temporary scaffolding, the temporary scaffolding device will be removed from the construction site and civil engineering work site, and in that case, the binding tool such as a band will be removed from the scaffolding device. become. Removal of a binding tool such as a band is performed using a tool for a wire cutter, and the removal work requires time. In addition, since the binder such as the removed band is cut short, it cannot be reused as it is and is discarded.

  In order to quickly perform civil engineering and construction work, how to assemble a temporary scaffold device quickly is an important issue. Moreover, as in the past, when using a binding tool such as a metal band to fix the scaffolding plate to the horizontal beam member, when removing the scaffolding plate, it is necessary to cut the binding tool short with a wire cutter, The binder cannot be reused, and the removed binder becomes industrial waste.

  An object of the present invention is to provide a fastener for fixing a scaffold plate that can be easily attached to a horizontal beam member and can be easily removed.

  Another object of the present invention is to provide a fastener for fixing a scaffold plate that can be reused repeatedly.

The fastener for fixing the scaffold plate of the present invention is a fastener for fixing the scaffold plate for fixing the scaffold plate disposed on the horizontal beam member to the horizontal beam member, and is made of a steel bar. A fastener main body extending in a width direction along a surface of a scaffolding plate disposed on the horizontal beam member; and being bent with respect to the one end connected to one end of the fastener main body; An arc-shaped first hook portion that engages with one protruding end of the horizontal beam member protruding from one side of the scaffolding plate disposed on the material, and the other end portion of the fastener body portion. An arcuate second hook portion that is bent with respect to the other end portion and engages with the other protruding end of the horizontal beam member protruding from the other side of the scaffold plate, and the surface of the scaffold plate In contact with the first and second hook portions engaged with the horizontal beam member, the scaffold plate is moved to the water. Formed integrally by bending a pressing portion for pressing toward the beam member, and both end portions forming a gap between contiguous said scaffold plate via a step portion at both ends of the pressing portion, the fastener body portion Then, in a state where the first hook portion is engaged with the horizontal beam member, the both end portions are elastically deformed, and the second hook portion is engaged with the horizontal beam member. A scaffold plate is fixed to the horizontal beam member.

  The fastener for fixing a scaffold plate according to the present invention is bent in a direction extending to the tip of one of the first and second hook portions, and the one hook portion is attached to and detached from the horizontal beam member. In this case, a bending guide for guiding the horizontal beam member with respect to the one hook portion is provided.

  According to the present invention, the hook plates provided at both ends of the fastener are respectively engaged with the horizontal beam member, whereby the scaffolding plate disposed on the horizontal beam member is fastened to the horizontal beam member. When removing the scaffolding plate from the horizontal beam material, the hooks and the horizontal beam material are disengaged and the fastener is removed from the horizontal beam material. As described above, the fastener can be easily attached to the horizontal beam member and can be easily detached by the operation of engaging the hook portion with the horizontal beam member, that is, the hooking operation. Furthermore, since the removed fastener can be reused repeatedly for fixing the scaffolding plate in another scaffold device without being discarded as waste, the generation of industrial waste can be suppressed.

  If the central part of the fastener body part is brought into contact with the scaffolding plate, when the hook part is engaged with the horizontal beam member, both ends of the fastener body part are elastically deformed in a direction approaching the scaffolding plate, The operation | work which engages a hook part with a horizontal beam material can be performed easily. And since the elastic force which goes to a horizontal beam material is added to each hook part from the center part as a starting point, a scaffold board can be reliably fixed with a fastener. Thereby, it can prevent that a scaffold board shifts | deviates on a horizontal beam material.

FIG. 1 is a perspective view showing a state in which a scaffold plate is fixed to a horizontal beam using a fastener that is an embodiment of the present invention.
[FIG. 2] (A) is an enlarged perspective view showing the fastener shown in FIG. 1, and (B) is FIG. 2 (A).
FIG.
[FIG. 3] (A) is an enlarged sectional view in the direction of line 3A-3A in FIG. 1, and (B) is FIG.
It is sectional drawing of the 3B-3B line direction in A), (C) is sectional drawing of the 3C-3C line direction in FIG. 3 (A).
[FIG. 4] (A) and (B) are process diagrams showing a procedure for fixing a scaffolding plate using a fastener,
4C is a cross-sectional view taken along line 4C-4C in FIG. 4B.
[FIG. 5] (A)-( B ) is sectional drawing which shows the state which fixed the scaffold board using the fastener which is other embodiment of this invention, respectively.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, the scaffold plate 10 is disposed on a horizontal beam member 11 constituting the scaffold device. Each horizontal beam member 11 is fixed to the vertical column 12, and the scaffold plate 10 is fixed to the horizontal beam member 11 using a fastener 20. The vertical struts 12 constituting the scaffold device are installed around or inside the building when the scaffold device is used for building work, and are installed on the ground when the scaffold device is used for civil engineering work. It will be. In FIG. 1, each horizontal beam member 11 has a vertical column 12 fixed to one end thereof, but depending on the scaffold device, the vertical column 12 is fixed to both ends of the horizontal beam member 11.

  As shown in FIG. 2, the fastener 20 is formed by a steel round bar, and is formed by bending it as illustrated. In the illustrated case, a member having an outer diameter of about 6 mm is used as the round bar. 1 and 3 show a state in which two scaffolding plates 10 are arranged on the horizontal beam member 11, and the fastener 20 is slightly longer than the total width dimension W of the two scaffolding plates 10. L fastener body 21 is provided. When the fastener main body portion 21 is fastened to the horizontal beam member 11, the fastener main body portion 21 extends in the width direction along the surface of the scaffold plate 10.

  An arc-shaped first hook portion 22 is provided continuously at one end portion of the fastener body portion 21. As shown in FIG. 3A, the first hook portion 22 is engaged with one protruding end of the horizontal beam member 11 protruding from one side of the scaffold plate 10. As shown in FIG. 3B, the first hook portion 22 includes a base portion 22 a that is bent in a substantially right angle direction with respect to one end portion of the fastener main body portion 21, and the fastener main body portion 21 from the distal end. And a curved portion 22b that is curved in an arc shape so as to protrude in the width direction. Yes.

  A second hook portion 23 is provided continuously at the other end portion of the fastener main body portion 21, and the second hook portion 23 faces the first hook portion 22. As shown in FIG. 3A, the second hook portion 23 is engaged with the other protruding end of the horizontal beam member 11 protruding from the other side of the scaffold plate 10. As shown in FIG. 3C, the second hook portion 23 is a base portion that is bent in a substantially right angle direction with respect to the other end portion of the fastener body portion 21, similar to the first hook portion 22. 23a and a curved portion 23b that is curved in an arc shape so as to protrude in the width direction from the distal end to the fastener main body portion 21, and the distal end portion expands, that is, a direction away from the horizontal beam member 11. It is a bending guide 23c that is bent in a straight line.

  The length D of each hook part 22 and 23 in the fastener 20 is set larger than the total dimension E of the thickness of the scaffolding plate 10 and the diameter of the horizontal beam member 11, as shown in FIG.

  As shown in FIG. 3, the scaffold body 10 is attached to the horizontal beam at the center in the longitudinal direction of the fastener main body 21 with both hook portions 22 and 23 engaged with the horizontal beam material 11. A pressing portion 24 that is pressed toward the material 11 is provided. The pressing portion 24 is formed integrally with the fastener body 21 by partially bending the fastener body 21. The pressing portion 24 is bent with respect to the fastener main body portion 21 so as to be shifted to the hook portions 22 and 23 side, that is, the lower side in FIG. 3, and the pressing portion 24 has a step portion 25 with respect to the fastener main body portion 21. doing. Therefore, under the state where both the hook portions 22 and 23 are engaged with the horizontal beam member 11 and the fastener 20 is mounted on the horizontal beam member 11, as shown in FIG. A gap 26 is formed between the main body portion 21 and the scaffold plate 10 by the step portion 25, and is elastically deformed with respect to the fastener main body portion 21 of the pressing portion 24. A tightening force is applied so as not to deviate from the horizontal beam material 11.

  As shown in FIG. 2 (A), the fastener body 21 is substantially straight. On the other hand, as shown by the two-dot chain line in FIG. If it is made into the form curved so that it may become convex, the clamping force with respect to the scaffold board 10 by the fastener 20 can be strengthened. In addition, when the shape is curved in this way, the clearance 26 between the fastener body 21 and the scaffold plate 10 is obtained in a state where the fastener 20 is attached to the horizontal beam member 11 and the scaffold plate 10 is fastened. Even if it enlarges, the scaffold board | plate 10 can be fastened firmly.

  In order to fix the scaffold plate 10 to the horizontal beam member 11 using the fastener 20 for fixing the scaffold plate shown in FIG. 2, the scaffold plate 10 is disposed on the horizontal beam member 11 as shown in FIG. Under the state, one hook portion 22 is engaged, that is, hooked to one protruding end portion of the horizontal beam member 11. When one hook portion 22 is engaged with the horizontal beam member 11, the other hook portion 23 is separated from the scaffold plate 10 and the fastener 20 is inclined with respect to the scaffold plate 10. The scaffold board 10 enters the corner of the tool main body 21. Thereby, the operator can engage the hook part 22 with the horizontal beam material 11 easily by manual work.

  Next, as shown in FIG. 4B, the other hook portion 23 is moved downward toward the scaffold plate 10. FIG. 4C shows a state in which the other hook portion 23 is moved downward and the tip of the hook portion 23 is in contact with the horizontal beam member 11 as described above. Under this state, since one hook portion 22 is already engaged with the horizontal beam member 11, the fastener 20 is inclined in the longitudinal direction of the scaffolding plate 10 as shown in FIG. It becomes a state. Under this condition, when an operator uses a tool (not shown) to elastically deform the hook portion 23 so that the tip end portion of the hook portion 23 is expanded, the hook portion 23 is pressed toward the horizontal beam member 11 as shown in FIG. As shown, the fastener 20 is in a state where the hook portions 22 and 23 at both ends thereof are engaged with the horizontal beam member 11 and attached to the horizontal beam member 11. At this time, since the step part 25 is provided with respect to the pressing part 24 at both ends of the fastener body 21, until both ends of the fastener body 21 abut against the horizontal beam member 11. It will be elastically deformed. Thereby, the deformation amount which elastically deforms the front-end | tip part of the hook part 23 can be decreased, and engagement operation of the hook part 23 with respect to the horizontal beam material 11 becomes easy.

  When the hook portion 23 is pressed toward the horizontal beam member 11, a bending guide 23 c that is bent in a spreading direction, that is, a direction away from the horizontal beam member 11 is provided at the tip of the hook portion 23. The hook portion 23 is easily engaged with the horizontal beam member 11 as compared with the case where the inclined portion 22c that is straight and is inclined upward in the tangential direction of the horizontal beam member 11 like the tip portion of the portion 22 is provided. Can be made. However, even if the tip portion of the hook portion 23 is inclined like the hook portion 22, it is possible to engage the hook portion 23 with the horizontal beam member 11 by elastically deforming the tip portion with a tool. It is. Further, the tip of the hook portion 22 may be a bending guide in the same manner as the hook portion 23.

  As shown in FIG. 3, under the state in which the scaffold plate 10 is fastened to the horizontal beam member 11 using the fastener 20, a gap 26 is formed between the fastener body portion 21 and the scaffold plate 10 by the step portion 25. 3 is applied to the hook portions 22 and 23 provided at both ends of the fastener body 21 starting from the pressing portion 24 as indicated by an arrow F in FIG. Will be. Thereby, the scaffolding plate 10 is fastened to the horizontal beam 11 so as to be fastened by the pressing part 24 and the hook parts 22 and 23 by the fastener 20 made of a steel bar.

  When the construction work and the civil engineering work using the temporary scaffold device shown in FIG. 1 are completed, and the scaffold device is disassembled and removed from a predetermined work place, the fastener 20 is attached to the horizontal beam member 11 and Conversely, the hook portion 23 is first removed from the horizontal beam member 11. At this time, the bending guide 23c at the tip of the hook portion 23 is pushed and spread using a tool. As a result, the hook portion 23 is elastically deformed in the extending direction, and the fastener main body portion 21 on which the hook portion 23 is provided is elastically deformed toward the scaffold plate 10. Can be removed from the horizontal beam 11.

  After the hook part 23 is removed, the hook part 22 can be easily detached from the horizontal beam member 11 manually without using a tool. Even if the fastener 20 is removed from the horizontal beam member 11, the fastener 20 returns to its original shape due to its elasticity, so that the fastener 20 must be re-fastened to fasten the scaffold plate 10 in the temporary scaffold device at another construction site. Can be used. Therefore, even if the fastener 20 is removed from the scaffold plate 10, the fastener 20 is not discarded, and industrial waste can be prevented from being generated.

  FIG. 5 (A) to FIG. 5 (C) each show a fastener 20 according to another embodiment of the present invention. Unlike the fastener 20 described above, FIG. 5 (A) shows a fastener 20 used for fastening a single scaffolding plate 10, and FIG. 5 (B) is arranged 3 parallel to each other. A fastener 20 used to fasten a single scaffolding plate 10 to a horizontal beam 11 is shown. The basic structure is the same as that described above except that the lengths of the fastener body portions 21 are different.

The pressing portion 24 is formed by bending the fastener main body portion 21 as described above, and the fastener main body portion 21 is entirely bent so that the central portion thereof is brought into contact with the scaffold plate 10 as the pressing portion 24. Therefore, the fastener can be easily manufactured.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. For example, in the fastener 20 described above, the fastener body portion 21 and both hook portions 22 and 23 are integrated by bending a bar, but the fastener body portion 21 and the hook portions 22 and 23 are separated. You may make it weld the hook parts 22 and 23 with respect to the fastener main-body part 21 using components.

DESCRIPTION OF SYMBOLS 10 Scaffold board 11 Horizontal beam 12 Vertical support | pillar 20 Fastener 21 Fastener main-body part 22 Hook part (1st hook part)
23 hook part (second hook part)
24 Pressing part 25 Step part 26 Gap

Claims (2)

A scaffolding plate fixing fastener for fixing a scaffolding plate disposed on a horizontal beam member to the horizontal beam member,
A fastener body portion made of a steel bar and extending in the width direction along the surface of the scaffolding plate disposed on the horizontal beam member;
Engage with one protruding end of the horizontal beam member that is bent from the one end portion of the fastener main body portion and bent with respect to the one end portion and protrudes from one side of the scaffolding plate disposed on the horizontal beam member. An arcuate first hook portion that
A second arc-shaped second member that is bent with respect to the other end portion of the fastener main body portion and bent to the other end portion and engages with the other protruding end of the horizontal beam member protruding from the other side of the scaffold plate. A hook portion,
A pressing portion for pressing the scaffold plate under a state in which contact with the first and second hook portions on the surface of the scaffold plate is engaged with the horizontal beam member toward said horizontal beam member, the pressing Forming both ends of the part through a stepped part and forming a gap with the scaffold plate, by integrally bending the fastener body part,
Under the state where the first hook portion is engaged with the horizontal beam member, the both end portions are elastically deformed, and the second hook portion is engaged with the horizontal beam member to thereby form the scaffold plate. A fastener for fixing a scaffolding plate, wherein the anchoring plate is fixed to the horizontal beam member. The fastener for fixing a scaffold plate according to claim 1 , wherein the first hook portion and the second hook portion are bent in a direction extending to a tip of the hook portion, and the one hook portion is bent with respect to the horizontal beam member. A fastener for fixing a scaffolding plate, comprising: a bending guide for guiding the horizontal beam member with respect to the one hook portion when attaching and detaching.

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