Assembly device for assembly member in wedge fastening type scaffold

Abstract

To provide an assembling device of an assembling material in a wedge fastening type scaffold capable of reducing weight and cost.SOLUTION: An assembling device of an assembling member in a wedge fastening type scaffold according to the present invention includes a post 4 including a post body 41 and a plurality of pocket fittings 5 each having a substantially U-shape in a plan view and including a pair of leg pieces 51 whose front ends are fixed to the post body 41 and a connecting piece 52 connecting rear ends of the pair of leg pieces 51, and an assembling member 1 including a wedge 2 provided at a front end portion of an assembling member body 11 so as to protrude downward. The wedge 2 is provided with a convex portion 211, the pocket fitting 5 is provided with a concave portion 521 at an upper end portion thereof, and at least a part of the convex portion 211 of the wedge 2 is accommodated in the concave portion 521 of the pocket fitting 5, so that the wedge 2 can be fastened to the pocket fitting 5.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to an assembly device for wedge-tightening temporary scaffolding at construction sites, in which assembly materials such as arm timbers are fastened to posts by a wedge-tightening method. [Background technology]

[0002] Conventionally, temporary scaffolding installed at construction sites consists of a number of posts erected at appropriate intervals, with horizontal members (assembly members) such as arm timbers attached to each post. In such temporary scaffolding, the wedge-fastening type has pocket fittings attached to the posts, with the wedges of the arm timbers attached to them. That is, the pocket fittings are U-shaped in plan view, with the tips (front ends) of a pair of legs welded and fixed to the outer periphery of the posts, and pocket holes are formed inside the pocket fittings that run vertically through them.

[0003] On the other hand, the wedge of the arm is arranged to protrude downward from the front end of the arm, and the arm is attached to the support by being driven into the pocket hole of the pocket fitting from above and fastened.

[0004] The present applicant has proposed the following Patent Documents 1 and 2 as devices for preventing the disengagement of assembly materials in wedge-tightening scaffolding.

[0005] That is, Patent Document 1 below proposes a device for preventing the attachment of an assembly material, which includes a locking member having a leaf spring attached to a retaining piece, and a leaf spring cover that is positioned below the assembly material body on the rear surface of the wedge so as to cover the rear side of the leaf spring, and which can lock the wedge in a prevented state relative to the pocket fitting by the locking member.

[0006] Furthermore, Patent Document 2 below proposes a device for preventing the assembly material from coming off, in which an elastic body is disposed between the retaining piece and the leaf spring in Patent Document 1 below to complement the function of the leaf spring.

[0007] The wedge-tightening scaffolding (assembly material slip-out prevention devices) in Patent Documents 1 and 2 are designed to be used in high-rise buildings, and are therefore strong enough for use in high-rise buildings. Therefore, when used in buildings other than high-rise buildings, the strength is excessive, and the current situation is that the strength is greater than necessary.

[0008] Therefore, when used in buildings other than high-rise buildings, excessive strength is not necessary as long as a certain level of strength is met, so it is possible to reduce the thickness of the materials (assembly materials, etc.) of wedge-tightened scaffolding to make it lighter and less expensive. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Japanese Patent Publication No. 2020-2753 [Patent Document 2] Japanese Patent Publication No. 2022-85215 Summary of the Invention [Problem to be solved by the invention]

[0010] However, if the thickness of materials is reduced in order to reduce the weight and cost of materials for use in buildings other than high-rise buildings, as mentioned above, conventional materials are also used in high-rise buildings, and if materials with reduced thickness are mistakenly used in high-rise buildings, there is a risk that the strength of the materials will be insufficient.

[0011] This has led to the problem that conventional materials cannot be made lighter and less expensive for use in buildings other than high-rise buildings.

[0012] The present invention has been made in consideration of the above-mentioned problems, and aims to provide an assembly device for assembly materials in wedge-tightening scaffolding that can be made lighter and less expensive. [Means for solving the problem]

[0013] In order to achieve the above object, the present invention provides the following means.

[0014] [1] A support pole having a support pole body, a pair of leg pieces whose front ends are fixed to the support pole body, and a plurality of pocket metal fittings that are roughly U-shaped in plan view and have connecting pieces that connect the rear ends of the pair of leg pieces, An assembly device for a wedge-tightening scaffolding comprising: an assembly member having a wedge protruding downward at the front end of the assembly member body; The wedge is provided with a protrusion, A recess is provided at the upper end of the pocket fitting, A device for assembling attachment materials in wedge-tightening scaffolding, characterized in that the wedge can be fastened to the pocket fitting by accommodating at least a portion of the convex portion of the wedge in the concave portion of the pocket fitting.

[0015] [2] The convex portion has a trapezoidal shape in which the upper end is larger than the lower end, 2. An assembly device for assembly materials in wedge-tightening scaffolding as described in the preceding paragraph 1, wherein the recess is trapezoidal in shape with an upper end larger than a lower end.

[0016] [3] The protrusion is provided at the center in the left-right direction on the rear surface of the wedge, 3. An assembly device for assembly materials in wedge-tightening scaffolding as described in paragraph 1 or 2 above, wherein the recess is provided in the center of the upper end of the connecting piece of the pocket fitting.

[0017] [4] An assembly device for assembly materials in a wedge-tightening scaffolding as described in the preceding paragraph 1 or 2, wherein the protrusion is provided on at least one of the side surfaces of the wedge.

[0018] [5] An assembly device for assembly materials in a wedge-fastened scaffolding as described in paragraphs 1 or 2 above, which operates only when the wedge is fastened to the pocket fitting and is equipped with a locking member to prevent the wedge from coming loose. [Effects of the Invention]

[0019] According to the invention of [1], a convex portion is provided on the wedge, and a concave portion is provided on the upper end of the pocket fitting, and at least a portion of the convex portion of the wedge is accommodated in the concave portion of the pocket fitting, thereby enabling the wedge to be fastened to the pocket fitting. Therefore, when attempting to fasten this wedge (assembly material) to a conventional pocket fitting, the upper end of the conventional pocket fitting is flat and does not have a concave portion, so the lower end of the convex portion of the wedge gets caught on the upper end of the pocket fitting and gets in the way, making it impossible to insert the wedge into the pocket fitting to a position where it can be fastened. This makes it impossible to fasten the wedge to the conventional pocket fitting. This prevents the wedge (assembly material) from being used with conventional pocket fittings, i.e., from being accidentally used in high-rise buildings, and limits the use of this wedge (assembly material) to only high-rise buildings. This allows the thickness of the materials used in the assembly device for the assembly material in wedge-fastening scaffolding to be reduced, thereby reducing weight and cost.

[0020] According to the invention [2], the recess is trapezoidal in shape with the upper end larger than the lower end, and the opening width increases as it moves from the lower end to the upper end, so that a trapezoidal convex part with an upper end larger than the lower end can be smoothly accommodated in the recess.

[0021] According to the invention of [3], the recess is provided in the center of the upper end of the connecting piece of the pocket fitting, so that the upper end of the connecting piece has edges on both sides of the recess. Therefore, these edges can be used to fasten the diagonal member as an assembly member to the pocket fitting.

[0022] According to the invention [4], the effect of the above [1] can be obtained.

[0023] According to the invention of [5], the locking member is activated only when the wedge is fastened to the pocket fitting, and is provided to prevent the wedge from coming loose. Therefore, when the locking member is activated, the wedge is fastened to the pocket fitting, and the worker can visually confirm that the locking member is activated and therefore confirm that the wedge is fastened to the pocket fitting. [Brief explanation of the drawings]

[0024] [Figure 1] FIG. 2 is a side view showing an arm piece as an assembly member of the present embodiment. [Figure 2] FIG. 2 is a rear cross-sectional view taken along line AA in FIG. [Figure 3] FIG. 10 is a perspective view showing the direction in which the wedge of the present embodiment is attached to the pocket fitting of the present embodiment. [Figure 4] 1A and 1B are rear views showing the state before and after the wedge of this embodiment is attached to the pocket fitting of this embodiment, where FIG. 1A is a rear view before fastening, FIG. 1B is a rear view immediately after fastening (unlocked state), and FIG. 1C is a rear view showing the state after fastening in which the locking member has prevented it from coming loose (locked state). [Figure 5] 1A and 1B are diagrams showing the state in which the wedge of this embodiment is inserted into a conventional pocket fitting, with FIG. 1A being a side view and FIG. 1B being a rear view. [Figure 6] 10A and 10B are diagrams showing a state in which a wedge is fastened to a pocket fitting and prevented from coming off by a locking member in a modified example, where FIG. 10A is a side view and FIG. 10B is a rear view. [Figure 7] 10A and 10B are diagrams showing a state in which a modified wedge is inserted into a conventional pocket fitting, with FIG. 10A being a side view and FIG. 10B being a rear view. [Figure 8] FIG. 10 is a side view showing the state in which a leading handrail is installed on the pocket fitting of this embodiment. [Figure 9] 9 is an enlarged perspective view of a portion surrounded by a dashed line B in FIG. 8. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0025] In this embodiment, the direction approaching the central axis of the support 4 will be referred to as the front direction, and the direction away from it will be referred to as the rear direction. For example, in Figures 3 and 4(a) to 4(c), the support 4 side of the pair of leg pieces 51 of the pocket fitting 5 is the front direction, and the side connected to the connecting piece 52 is the rear direction. In this embodiment, the front side will sometimes be referred to as the front side, and the rear side will sometimes be referred to as the back side (rear side). Furthermore, the left-right direction in Figure 2 will be referred to as the left-right direction, and the up-down direction in Figure 3 will be referred to as the up-down direction or height direction.

[0026] (Assembly device for assembly materials in wedge-tightened scaffolding) The assembly device for assembly materials in wedge-tightening scaffolding of the present invention (hereinafter simply referred to as the assembly device) is used for temporary scaffolding at construction sites, and prevents temporary scaffolding materials (assembly materials, etc.) from being used on high-rise buildings. The assembly device of the present invention is preferably used for low-rise temporary scaffolding.

[0027] The assembly device of this embodiment includes a support 4 and an arm 1 as an assembly member.

[0028] (post) The support posts 4 of this embodiment are erected at appropriate intervals at a construction site, and attachment members (for example, arm timbers 1, etc.) are attached to them.

[0029] The support pole 4 has a support pole body 41 and a plurality of pocket fittings 5.

[0030] (Support body) The support pillar body 41 of this embodiment supports the pocket metal fitting 5 and the arm 1 as an assembly material, and is made of a round pipe material having a predetermined length.

[0031] Four pocket fittings 5 ​​are provided at predetermined intervals in the height direction of the support pole body 41.

[0032] (Pocket hardware) The pocket fitting 5 of this embodiment is used to fasten together an assembly material (for example, the arm 1, etc.).

[0033] As shown in Figure 3, the pocket fitting 5 has a roughly U-shape in plan view, having a pair of roughly plate-like leg pieces 51 on the left and right arranged roughly parallel to each other, and a roughly plate-like connecting piece 52 formed integrally with the pair of leg pieces 51 and connecting the rear ends of the pair of leg pieces 51.

[0034] The front ends of the pair of legs 51 of the pocket fitting 5 are fixed to the outer circumferential surface of the support body 41 by welding.

[0035] The connecting piece 52 of the pocket fitting 5 is disposed in an inclined position so as to approach the central axis (vertical axis) of the support body 41 as it extends downward.

[0036] (Pocket metal recess) The recess of the pocket fitting of the present invention is adapted to accommodate at least a part of the protrusion provided on the wedge, which will be described later.

[0037] As shown in FIG. 3, the recess 521 in this embodiment is formed in the center of the upper end of the connecting piece 52 of the pocket fitting 5.

[0038] As shown in FIG. 4(a), the recess 521 has a trapezoidal shape with the upper end being larger than the lower end.

[0039] In this embodiment, the four pocket fittings 5 ​​are provided at predetermined intervals and are positioned at the same height position on the support body 41, but this is not limited to this. Of the four pocket fittings 5, adjacent pocket fittings 5 ​​may be positioned with their height positions shifted by approximately the height dimension of the pocket fitting 5, and two pocket fittings 5 ​​facing each other across the central axis of the support 4 may be positioned at the same height position.

[0040] (assembly material) As shown in FIG. 4(b), in this embodiment, the wedge 2 of the arm member 1 as an assembly member is fitted into the pocket metal fitting 5 and fastened.

[0041] As shown in FIG. 1, an arm 1 as an assembly member of this embodiment includes an arm body 11 as an assembly member body, and a wedge 2.

[0042] (Assembly material body) The arm body 11 of this embodiment is made of a straight round pipe material.

[0043] (Wedge) As shown in FIG. 1, wedges 2 are provided at both ends of the arm body 11 so as to protrude downward.

[0044] The wedge 2 of this embodiment is used when fastening the arm piece 1 to the pocket fitting 5.

[0045] The wedge 2 has a vertically disposed front wall 22. When viewed from the front or rear, the upper part of this front wall 22 is circular in shape to correspond to the shape of the end face of the arm body 11, and the lower part is strip-shaped or band-shaped so as to extend downward.

[0046] A rearward protruding portion is formed on the outer peripheral edge of the front wall portion 22 so as to protrude rearward. Of this rearward protruding portion, the upper end portion is configured as an upper rearward protruding portion 24, and the both side portions are configured as both side rearward protruding portions 23.

[0047] The upper rear protruding portion 24 is formed to protrude rearward shorter than the opposite rear protruding portions 23. In this way, an upper opening is formed between the upper rear protruding portion 24 and the arm body 11.

[0048] As shown in Figures 2 and 3, the upper portions of the rearward protruding portions 23 on both sides are formed in an arc shape that bulges out on both sides when viewed from the back so that they can accommodate the front end of the arm bar body 11.

[0049] The lower end of the rearward protruding portion of the wedge 2 is configured as a lower rearward protruding portion 25. This lower rearward protruding portion 25 is formed in an inclined shape that slopes downward toward the rear, and is configured to function as a guide wall that guides a retaining piece 31 of the locking member 3 (described later) rearward.

[0050] The wedge 2 is fixed to the front end of the arm log body 11 by welding the upper parts of the rear protrusions 23 on both sides of the wedge 2 so that they fit into both sides of the front end of the arm log body 11.

[0051] In this fixed state, as described above, the upper rear protrusion 24 of the wedge 2 is formed shorter than the side rear protrusions 23, so that an upper opening is formed between the upper rear protrusion 24 and the upper front end of the arm log body 11, and a gap (space) capable of accommodating the locking member 3 described below is formed between the front wall portion 22 between the side rear protrusions 23 and the front end surface of the arm log body 11.

[0052] (Leaf spring cover) As shown in Figures 1 to 4(c), a leaf spring cover 21 is arranged below the arm body 11 on the back side of the wedge 2 of this embodiment so as to span between the rear ends of the rear protrusions 23 on both sides.

[0053] The leaf spring cover 21 protects the leaf spring of the locking member 3, which will be described later, from contact with the outside.

[0054] The leaf spring cover 21 is disposed in correspondence with the leaf spring of the locking member 3, and both ends thereof are welded to the rearward protruding portions 23 on both sides of the wedge 2.

[0055] (Convex part) The protrusion of the present invention is received in the recess of the pocket fitting when the wedge is fastened to the pocket fitting.

[0056] As shown in FIG. 4(a), the convex portion 211 of this embodiment has a trapezoidal shape with its upper end being larger than its lower end.

[0057] The protrusion 211 is provided at the center in the left-right direction of the lower end of the leaf spring cover 21 .

[0058] The protrusion 211 is integrally molded with the leaf spring cover 21 by enlarging the lower end of the leaf spring cover 21 so that it has the above-mentioned trapezoidal shape, but this is not limited to this, and the above-mentioned trapezoidal protrusion 211 may be made as a separate part and joined to the lower end of the leaf spring cover 21.

[0059] (Mode of concave and convex parts) As described above, the convex portion 211 and the concave portion 521 in this embodiment are trapezoidal in shape with the upper end being larger than the lower end. Because of this trapezoidal shape, the opening width of the concave portion 521 increases from the lower end to the upper end, so that the convex portion 211 can be smoothly accommodated within the concave portion 521.

[0060] The recess 521 is trapezoidal in shape with the upper end larger than the lower end, but is not limited to this, and the shape of the recess 521 may be, for example, square, rectangular, or semicircular, as long as it can accommodate at least a portion of the protrusion 211 so that the wedge 2 can be fitted to a position where it can be tightened to the pocket fitting 5.

[0061] The convex portion 211 is also trapezoidal in shape with the upper end being larger than the lower end, but is not limited to this, and the shape of the convex portion 211 may be, for example, square, rectangular or semicircular, as long as at least a portion of the convex portion 211 is accommodated within the recess 521 so that the wedge 2 can be fitted to a position where it can be tightened to the pocket fitting 5.

[0062] 4(b), in this embodiment, when the wedge 2 is fitted into the pocket fitting 5 to a position where it can be fastened, the convex portion 211 is fitted snugly into the concave portion 521. In other words, the protruding height of the convex portion 211 (the length from the top to the bottom of the trapezoid) is the same as the depth of the concave portion 521 (the length from the top to the bottom of the trapezoid).

[0063] The reason why the convex portion 211 is accommodated within the concave portion 521 as described above when the wedge 2 is fitted to a position where it can be fastened to the pocket fitting 5 will be explained using Figures 5(a) and 5(b).

[0064] FIG. 5 shows the state in which the wedge 2 of this embodiment is inserted into a conventional pocket fitting (one that does not have a recess), with FIG. 5(a) being a side view and FIG. 5(b) being a rear view.

[0065] In this embodiment, when wedge 2 is fitted into pocket fitting 5 to a position where it can be fastened, convex portion 211 is accommodated in concave portion 521 as described above. For this reason, even if wedge 2 is inserted into a conventional pocket fitting, as shown in Figure 5(b), the upper end of the conventional pocket fitting is flat and has no concave portion, so the lower end of convex portion 211 gets caught on the upper end of the connecting piece of the conventional pocket fitting, and convex portion 211 gets in the way, making it impossible to fit wedge 2 into the conventional pocket fitting to a position where it can be fastened. Therefore, wedge 2 cannot be fastened to the conventional pocket fitting.

[0066] In this way, in this embodiment, when the wedge 2 is fitted to a position where it can be fastened to the pocket fitting 5, the convex portion 211 is accommodated within the concave portion 521 as described above, thereby making it impossible for the wedge 2 of this embodiment to be fastened to conventional pocket fittings.

[0067] As described above, the protrusion 211 in this embodiment is designed to fit snugly within the recess 521, but this is not limited to this, and the protrusion 211 may be designed so that at least a portion of it is accommodated within the recess 521 when the wedge 2 is inserted to a position where it can be tightened to the pocket fitting 5.

[0068] Furthermore, the protrusion 211 may be configured so that when the wedge 2 is inserted to a position where it can be fastened to the pocket fitting 5, it is completely contained within the recess 521, while leaving a gap between the lower end of the protrusion 211 and the lower end of the recess 521.

[0069] Regardless of which of the above protrusions 211 is used, it is possible to make it impossible to fasten the wedge 2 of this embodiment to a conventional pocket fitting, as described above.

[0070] Furthermore, as shown in Figure 4(b), the shapes of the convex portion 211 and the concave portion 521 in this embodiment are the same, but this is not limited to this, and their shapes may be different as long as at least a portion of the convex portion 211 can be accommodated within the concave portion 521 so that the wedge 2 can be fitted to a position where it can be tightened to the pocket fitting 5.

[0071] As described above, in this embodiment, the recess 521 is provided in the center of the upper end of the connecting piece 52 of the pocket fitting 5. The reason for this will be explained below with reference to Figures 8 and 9.

[0072] As shown in Figure 8, at a construction site, a leading handrail 6 is installed between the posts 4. This leading handrail 6 has a horizontal member 61 with hook bodies 611 at both ends, and two diagonal members 62 with locking means 622 at their tips, and the end of each diagonal member 62 that does not have the locking means 622 is joined to the hook body 611.

[0073] This leading handrail 6 is used by fastening the hook bodies 611 at both ends of the horizontal member 61 to the pocket fittings 5, crossing two diagonal members 62, and fastening the locking means 622 of each diagonal member 62 to the pocket fittings 5.

[0074] Figure 9 is an enlarged perspective view of the part surrounded by the dashed line B in Figure 8. Of the two intersecting diagonal members 62 in Figure 8, the locking means 622 of the rear diagonal member 62 is attached to the pocket fitting 5 using the edge 524 on the left side (the rear side in Figure 8) of the recess 521 at the upper end of the connecting piece 52 of the pocket fitting 5, as shown in Figure 9.

[0075] In this way, by providing the recess 521 of this embodiment in the center of the upper end of the connecting piece 52 of the pocket fitting 5, edge portions 524 are present on both sides of the recess 521 at the upper end of the connecting piece 52. For this reason, these edge portions 524 can be used to fasten the diagonal member 62 as an assembly member to the pocket fitting 5. Therefore, it is preferable that the recess 521 be provided in the center of the upper end of the connecting piece 52 of the pocket fitting 5.

[0076] As described above, in this embodiment, the convex portion 211 is provided integrally with the leaf spring cover 21 at the center in the left-right direction of the lower end of the leaf spring cover 21, but this is not limited to this, and the convex portion 211 may also be provided at the center in the left-right direction on the rear surface of the wedge 2.

[0077] For example, the protrusion 211 may be a separate member from the leaf spring cover 21 and provided below the leaf spring cover 21. Alternatively, if the assembly device of the present invention does not have the locking member 3 described below, that is, if there is no leaf spring of the locking member 3 and there is no need to provide a leaf spring cover, the protrusion 211 may be integrally formed with the wedge 2 and provided in the center in the left-right direction on the rear surface of the wedge 2, or the protrusion 211 of a separate member may be provided in the center in the left-right direction on the rear surface of the wedge 2.

[0078] (locking member) As shown in FIGS. 1 to 4(c), a locking member 3 is inserted through the wedge 2 of this embodiment.

[0079] The locking member 3 operates only when the wedge 2 is fastened to the pocket fitting 5, and serves to prevent the wedge 2 from coming off.

[0080] The locking member 3 has a retaining piece 31 and a leaf spring (not shown).

[0081] (Prevention piece) The retaining piece 31 is arranged so as to be slidable in the up and down direction when inserted into the wedge 2 .

[0082] 2 and 3, the retaining piece 31 is elongated or tongue-shaped and extends vertically. When the wedge 2 is simply fastened to the pocket fitting 5, i.e., in the unlocked state (FIG. 4(b)), this retaining piece 31 is inserted into the upper opening formed between the upper rear protruding portion 24 and the upper front end of the arm body 11, and the part below the upper end is housed between the rear protruding portions 23 on both sides of the wedge 2 so as to be able to slide vertically.

[0083] The vertical dimension of the retaining piece 31 is slightly longer than that of the wedge 2. In addition, the front-to-rear length of the upper end of the retaining piece 31 is longer than the front-to-rear dimension of the upper end opening, so that the retaining piece 31 cannot pass downward through the upper end opening. This prevents the retaining piece 31 (locking member 3) from falling out downward.

[0084] As shown in Figure 3, the lower end of the retaining piece 31 is formed so as to be inclined backward, so that when the retaining piece 31 is driven in, this lower end is guided by the lower rear protruding portion 25 of the wedge 2 and moves backward before being inserted downward.

[0085] (leaf spring) The lower end of a leaf spring (not shown) is fixed slightly below the vertical middle position on the back side of the retaining piece 31. The leaf spring is formed in an arc shape such that the vertical middle part is convex rearward relative to the upper and lower ends.

[0086] Furthermore, the leaf spring is elastically compressed and deformed forward due to a portion slightly below its middle portion being in pressure contact with the lower end of the front end surface of the arm body 11, and the elastic restoring force (biasing force) of the leaf spring pushes the retaining piece 31 forward. As a result, the retaining piece 31 is positioned along the back surface of the front wall 22 of the wedge 2, and the lower end of the retaining piece 31 is configured not to separate from the lower rear protruding portion 25 of the wedge 2.

[0087] The reason why the locking member 3 of this embodiment operates only when the wedge 2 is fastened to the pocket fitting 5 will be explained using Figs. 4(b) and 5(a).

[0088] As shown in Figure 5(a), when the wedge 2 is not (cannot be) fastened to the pocket fitting 5, the lower rear projection 25 of the wedge 2 remains inside the pocket fitting 5. For this reason, even if the retaining piece 31 of the locking member 3 is driven downward, the lower end of the retaining piece 31 abuts and gets caught on the lower end of the connecting piece 52 of the pocket fitting 5, so the retaining piece 31 cannot be inserted into the gap between the lower end of the connecting piece 52 and the lower rear projection 25 of the wedge 2. Therefore, when the wedge 2 is not fastened to the pocket fitting 5, the locking member 3 cannot be operated.

[0089] 4(b), on the other hand, the lower rear protruding portion 25 of the wedge 2 protrudes downward below the lower end of the pocket fitting 5. For this reason, when the retaining piece 31 of the locking member 3 is driven downward, the lower end of the retaining piece 31 is guided by the lower rear protruding portion 25 of the wedge 2 and moves rearward, and can protrude below the pocket fitting 5 through the gap between the lower end of the connecting piece 52 and the lower rear protruding portion 25 of the wedge 2 without coming into contact with or becoming caught on the lower end of the connecting piece 52, thereby operating the locking member 3.

[0090] Therefore, the locking member 3 can be operated only when the wedge 2 is fastened to the pocket fitting 5.

[0091] As described above, the assembly device of this embodiment operates only when the wedge 2 is fastened to the pocket fitting 5, and is equipped with a locking member 3 to prevent the wedge 2 from coming loose. Therefore, when the locking member 3 is activated, the wedge 2 is fastened to the pocket fitting 5, and the worker can visually confirm that the locking member 3 is activated, thereby having the effect of being able to confirm that the wedge 2 is fastened to the pocket fitting 5.

[0092] The locking member is not an essential component of the assembly device of the present invention, but since the inclusion of the locking member 3 as in this embodiment provides the above-mentioned effects, it is preferable to include the locking member.

[0093] (How to use the assembly device) Next, a method of using the assembly device of this embodiment will be described.

[0094] When assembling the arm 1 to the support 4, the wedge 2 of the arm 1 is moved in the direction of arrow P as shown in Figures 3 and 4(a), and the lower part of the wedge 2 of the arm 1 is inserted into the pocket fitting 5 from above, and the convex part 211 is fitted into the concave part 521.

[0095] Then, with the wedge 2 inserted into the pocket fitting 5, the area around the upper end surface of the wedge 2, for example the upper surface of the front end of the arm wood body 11, is struck with a hammer or the like, and the lower end of the wedge 2 is pressed into between the connecting piece 52 of the pocket fitting 5 and the outer surface of the support 4, thereby fastening it to the pocket fitting 5.

[0096] In this fastened state (unlocked state), the lower end of the wedge 2 is arranged to protrude slightly downward from the lower end of the pocket fitting 5.

[0097] Next, the upper end of retaining piece 31 is struck from above with a hammer or the like, forcing retaining piece 31 downward and press-fitting its lower end between lower rear protruding portion 25 of wedge 2 and the lower end of connecting piece 52 of pocket fitting 5. This causes the front of wedge 2 to be more firmly pressed against the outer periphery of post 4, and at the same time, the lower end of retaining piece 31 to be more firmly pressed against connecting piece 52 of pocket fitting 5. In this state, wedge 2 is fixed more firmly to pocket fitting 5 with greater strength, resulting in a retained state (locked state shown in Figure 4(c)) in which wedge 2 will not easily come out of pocket fitting 5. Therefore, even if an unexpected force is applied to wedge 2 that pushes it upward, wedge 2 will not come out of pocket fitting 5, preventing problems such as wedge 2 accidentally falling out.

[0098] In this locked state, the lower end of the retaining piece 31 is disposed so as to protrude downward beyond the lower end of the wedge 2.

[0099] On the other hand, when removing the arm 1 from the support 4 from the locked state, the lower end of the retaining piece 31 is struck upward with a hammer or the like, pushing the retaining piece 31 upward relative to the wedge 2, and the lower end of the retaining piece 31 is removed from between the lower rear protrusion 25 of the wedge 2 and the lower end of the connecting piece 52 of the pocket fitting 5. This results in an unlocked state, where the wedge 2 is simply fastened to the pocket fitting 5.

[0100] Next, the lower end of wedge 2 or the underside of the front end of arm body 11 is struck upward from below, pushing wedge 2 upward against pocket fitting 5 and releasing the fastening of wedge 2 to pocket fitting 5. After that, by lifting the front end of arm 1, wedge 2 can be removed from pocket fitting 5 and arm 1 can be removed from support 4.

[0101] (effect) As described above, the assembly device of this embodiment employs a configuration in which wedge 2 is provided with a protrusion 211 and the upper end of pocket fitting 5 is provided with a recess 521, and at least a portion of protrusion 211 of wedge 2 is accommodated in recess 521 of pocket fitting 5, thereby enabling wedge 2 to be fastened to pocket fitting 5. For this reason, when attempting to fasten this wedge 2 (assembly material) to a conventional pocket fitting, the upper end of the conventional pocket fitting is flat and has no recess, so the lower end of protrusion 211 of wedge 2 gets caught on the upper end of the pocket fitting and gets in the way, making it impossible to insert wedge 2 into the pocket fitting to a position where it can be fastened. For this reason, wedge 2 cannot be fastened to the conventional pocket fitting. Therefore, it is possible to prevent the wedge 2 (assembly material) from being used with conventional pocket fittings, i.e., from being mistakenly used in high-rise buildings, and it is possible to make this wedge 2 (assembly material) usable only in buildings other than high-rise buildings, so the thickness of the materials used in the assembly device for the assembly material in wedge-tightening scaffolding can be made thinner, thereby reducing weight and cost.

[0102] In the above embodiment, the assembling device of the present invention has been described as being applied to an arm 1, but the present invention is not limited to this and can be applied to any assembled material that can be assembled using a wedge fastening method. For example, the assembling device of the present invention can also be applied to assembled materials such as handrails, brackets, end stoppers, beam frames, and diagonal braces.

[0103] <Modification> 6A and 6B are diagrams showing a state in which the wedge 2 is fastened to the pocket fitting 5 and prevented from coming off by the locking member 3 in the modified example, with FIG. 6A being a side view and FIG. 6B being a rear view.

[0104] (Modified convex portion) The convex portions 231 of the modified example are provided at the center in the front-rear direction of the rearward protruding portions 23 on both sides of the wedge 2, and have a circular shape when viewed from the side as shown in FIG. 6(a).

[0105] The protrusions 231 are integrally formed with the rearward protrusions 23 on both sides of the wedge 2, but this is not limitative, and the protrusions 231 may be produced as separate members and joined to the rearward protrusions 23 on both sides.

[0106] (Modified concave portion) The recess 523 of this modified example is provided in the center of the upper end of each of the pair of legs 51 of the pocket fitting 5, and is square when viewed from the side as shown in Figure 6(a).

[0107] (Modifications of Convex and Concave Portions) As described above, the convex portions 231 are provided on both surfaces of the rearward protruding portions 23, but this is not limiting and the convex portions 231 may be provided on only one of the rearward protruding portions 23. Furthermore, the concave portions 523 are provided on each of the pair of leg pieces 51 so as to correspond to the positions of the convex portions 231, but this is not limiting and the concave portions 523 may be provided on only one of the pair of leg pieces 51 as long as they correspond to the positions of the convex portions 231.

[0108] The shape of the protrusion 231 is circular, but is not limited to this, and the shape of the protrusion 231 may be, for example, square, rectangular, trapezoidal or elliptical, as long as at least a portion of the protrusion 231 is accommodated within the recess 523 so that the wedge 2 can be fitted to a position where it can be tightened to the pocket fitting 5.

[0109] The shape of the recess 523 in the modified example is square, but is not limited to this, and the shape of the recess 523 may be, for example, rectangular, trapezoidal, or semicircular, as long as it can accommodate at least a portion of the protrusion 231 so that the wedge 2 can be fitted to a position where it can be tightened to the pocket fitting 5.

[0110] As shown in Figure 6(a), even in the modified example, when the wedge 2 is fitted into the pocket fitting 5 to a position where it can be fastened, the convex portion 231 is accommodated within the concave portion 523, and the height of the convex portion 231 is the same as the depth of the concave portion 523. The reason why the convex portion 231 is accommodated within the concave portion 523 in this way will be explained using Figures 7(a) and 7(b).

[0111] 7A and 7B are diagrams showing a state in which the modified wedge 2 is inserted into a conventional pocket fitting, with FIG. 7A being a side view and FIG. 7B being a rear view.

[0112] In the modified example, when wedge 2 is fitted into pocket fitting 5 to a position where it can be tightened, convex portion 231 is accommodated within concave portion 523 as described above, so that even if wedge 2 of the modified example is inserted into a conventional pocket fitting, as shown in Figure 7(a), the upper end of the conventional pocket fitting is flat and has no concave portion, so the lower end of convex portion 231 gets caught on the upper end of the leg piece of the conventional pocket fitting, and convex portion 231 gets in the way, making it impossible to fit wedge 2 into the conventional pocket fitting to a position where it can be tightened, and therefore it is impossible to tighten wedge 2 to the conventional pocket fitting. In this way, the modified example employs a configuration in which convex portion 231 is accommodated within concave portion 523 as described above when wedge 2 is fitted into pocket fitting 5 to a position where it can be tightened, so that even in the modified example, it is possible to make it impossible to tighten wedge 2 to the conventional pocket fitting.

[0113] In the modified example, the protrusion 231 is accommodated within the recess 523 as described above, but this is not limited to this, and the protrusion 231 may be at least partially accommodated within the recess 523 when the wedge 2 is inserted to a position where it can be tightened to the pocket fitting 5.

[0114] Furthermore, the protrusion 231 may be configured so that when the wedge 2 is inserted to a position where it can be fastened to the pocket fitting 5, it is completely contained within the recess 523, while leaving a gap between the lower end of the protrusion 231 and the lower end of the recess 523.

[0115] Regardless of which of the above protrusions 231 is used, it is possible to make it impossible to fasten the modified wedge 2 to a conventional pocket fitting, as described above.

[0116] Also, as shown in Figure 6(a), the shapes of the convex portion 231 and the concave portion 523 are different, but this is not limited to this, and their shapes may be the same as long as at least a portion of the convex portion 231 is accommodated within the concave portion 523 so that the wedge 2 can be fitted to a position where it can be tightened to the pocket fitting 5.

[0117] The convex portion 231 is formed integrally with the rearward protruding portions 23 on both sides of the wedge 2, but this is not limited to this. The above-mentioned circular convex portion 231 may be made as a separate member and may be formed in the center of the rearward protruding portions 23 on both sides in the front-to-rear direction.

[0118] Other than the above, the configuration of the assembly device for assembly materials in the modified wedge-tightening scaffolding is substantially the same as that of the assembly device of this embodiment, so the same or equivalent parts will be given the same symbols and redundant explanations will be omitted.

[0119] The modified assembling device can also achieve the same effects as those of this embodiment. [Industrial Applicability]

[0120] The assembly device for assembly materials in wedge-tightening scaffolding of the present invention can be suitably used when assembling wedge-tightening temporary scaffolding to be installed at a construction site. [Explanation of symbols]

[0121] 1: Arm wood (assembly material) 11: Arm wood body (assembly material body) 2: Wedge 211: Convex 3: Locking member 4: Prop 41: Support body 5: Pocket metal fittings 51: Leg piece 52: Connecting piece 521: Recess

Claims

1. a support pole having a support pole body and a plurality of pocket fittings each having a generally U-shaped configuration in plan view, the pocket fittings having a pair of leg pieces whose front ends are fixed to the support pole body and a connecting piece that connects the rear ends of the pair of leg pieces; An assembly device for a wedge-tightening scaffolding comprising: an assembly member having a wedge protruding downward at the front end of the assembly member body; The wedge is provided with a protrusion, A recess is provided at the upper end of the pocket fitting, A device for assembling attachment materials in wedge-tightening scaffolding, characterized in that the wedge can be fastened to the pocket fitting by accommodating at least a portion of the convex portion of the wedge in the concave portion of the pocket fitting.

2. The convex portion has a trapezoidal shape in which the upper end is larger than the lower end, 2. The assembly device for assembly members in a wedge-tightening scaffolding according to claim 1, wherein the recess has a trapezoidal shape with an upper end larger than a lower end.

3. the protrusion is provided at the center in the left-right direction on the rear surface of the wedge, 3. The assembly device for assembly materials in wedge-tightening scaffolding according to claim 1 or 2, wherein the recess is provided at the center of the upper end of the connecting piece of the pocket fitting.

4. 3. The assembly device for assembly materials in a wedge-tightening scaffolding according to claim 1, wherein the protrusion is provided on at least one of the side surfaces of the wedge.

5. 3. An assembly device for assembly materials in a wedge-tightening type scaffolding according to claim 1 or 2, which is provided with a locking member that operates only when the wedge is fastened to the pocket fitting and prevents the wedge from coming loose.

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