Reinforcement fittings for hanging brackets

Abstract

The present invention provides a reinforcing bracket for hanging brackets that increases the flexibility of using hanging brackets during installation and also strengthens the support strength of the hanging brackets. [Solution] A reinforcing fitting for a suspension fitting that increases the support strength of a suspension fitting used to fix a long member for supporting articles to a protruding part that protrudes horizontally in a cross-sectional view of a structural steel building material, wherein the suspension fitting comprises a support part, a crimping part, and a connecting part that integrally connects the support part and the crimping part, and has a roughly U-shape in a side view, and is capable of supporting a first long member by inserting it into the suspension fitting, or supporting a second long member on the pendulum fitting, and the reinforcing fitting comprises a first locking part that locks to the structural building material so as not to restrict the swinging of the pendulum fitting, and a second locking part that locks to the suspension fitting without interfering with the long member, thereby increasing the support strength of the suspension fitting to the structural building material.

Description

Technical Field

[0001] The present invention relates to a reinforcing fitting for a hanging fitting.

Background Art

[0002] When an object is suspended from a building structural material (such as a steel section) by a long member such as a suspension bolt, when fixing and constructing without making a hole in the building structural material, a hanging fitting (also referred to as a "suspension fitting") that clamps the structural material is used.

[0003] In this type of hanging fitting, if it is only fixed to the steel material alone, the load concentrates at the tip of the bolt for clamp fixing, so it tends to be unstable.

[0004] In Japan, as countermeasures against earthquakes are necessary, according to the "Architectural Equipment Seismic Design and Construction Guidelines 2014 Edition" (Non-Patent Document 1), "3) Seismic support from steel materials. Seismic support is basically taken from the slab.... Fittings attached to the steel material part must use a hanging fitting with a structure that does not cause detachment even when a horizontal tensile load acts (such as a support member sandwiching the steel frame to prevent detachment).... The hanging member is provided with anti-sway measures... and it is necessary to take measures to prevent falling." As described, guidelines for making the hanging fitting a seismic structure are shown.

[0005] Therefore, it has been increasing to attach a reinforcing fitting to the hanging fitting for vibration prevention.

[0006] Regarding this type of reinforcing fitting, in Patent Document 1, as in the reinforcing fitting S for a hanging fitting shown in FIG. 21, a screw rod c is inserted through the lower side of a hanging fitting b (clamp) fixed to one a2 of the flanges of the H-shaped steel A, and the screw rod c is inserted through a latching plate d hooked on the other a1 of the flange, and nuts e1, e2 are screwed and tightened at both ends of the screw rod c to fix the positions of the hanging fitting b and the latching plate d with respect to the flange a2. A structure is disclosed.

[0007] However, when the suspension bolt B1 was inserted through the suspension bracket b, the threaded rod c of the reinforcing bracket S, which runs inside the suspension bracket b, interfered with the suspension bolt B1, making it difficult to install the reinforcing bracket S on the suspension bracket b. Therefore, it was necessary to suspend the pendulum (lower bracket) C from the lower part of the suspension bracket b where the threaded rod c would not interfere, and to support the pendulum C only with the suspension bolt B2.

[0008] Furthermore, regarding reinforcing fittings, Patent Document 2 discloses a fall prevention device in which both the suspension fitting (suspension fitting, clamp) fixed to one flange and the fixing fitting that engages with the other flange are fixed with a retaining device in order to reinforce the fixed state of the suspension fitting when a suspension bolt is inserted through upper and lower suspension holes.

[0009] Referring to the drawings in Patent Document 2, the retainer (3) has a second retaining member (32) that holds the fixing device (2) to the other flange with a bolt and nut, and a first retaining member (31) that hooks its hook-shaped tip (31B, 31B) onto the edge of the suspension device (connecting part 8C) fixed to one flange by wrapping it around from the outside. The first retaining member and the second retaining member are connected by a bolt (32A) to maintain the distance between the suspension device (8) and the fixing device (2).

[0010] Depending on the conditions of the construction site, it may be difficult to install multiple suspension devices on the steel material, and it may be necessary to suspend multiple suspension bolts from the suspension device.

[0011] Under these circumstances, when applying the fall prevention device disclosed in Patent Document 2, a suspension bolt is installed on the suspension device, and another suspension bolt is also installed. For example, it becomes necessary to install the lower fitting (pendulum) described in Patent Document 1. However, as can be seen from Figure 3 of Patent Document 1, the retainer interferes with the installation hole of the lower fitting, making it difficult to install the lower fitting and resulting in the problem of difficulty in installing the suspension bolt. [Prior art documents] [Patent Documents]

[0012] [Patent Document 1] Utility Model Registration No. 3121581 Gazette [Patent Document 2] Patent No. 6853035 [Non-patent literature]

[0013] [Non-Patent Document 1] Guidelines for Seismic Design and Construction of Building Equipment, 2014 Edition: Written by the National Institute for Land and Infrastructure Management, published by the Japan Building Center on September 30, 2014. [Overview of the project] [Problems that the invention aims to solve]

[0014] As described above, conventionally, when reinforcing brackets were provided to the suspension brackets, if the suspension bolt was directly below, the reinforcing bracket in the shape of Patent Document 2 could be used. However, when the suspension bolt (long member) was installed at an angle, it was necessary to provide the reinforcing bracket in the shape of Patent Document 1. This meant that the shape of the reinforcing bracket had to be used differently depending on the installation state of the suspension bolt, which made construction difficult. Furthermore, when it was necessary to install multiple suspension bolts, construction was not possible, and if they had to be installed individually, the number of suspension brackets used would increase, making it time-consuming.

[0015] In view of these circumstances, the present invention aims to provide a reinforcing fitting for hanging fittings that increases the degree of freedom in using hanging fittings during installation and also increases the support strength of the hanging fittings. [Means for solving the problem]

[0016] This invention relates to a reinforcing fitting for a suspension fitting. The present invention relates to a reinforcing fitting for a suspension fitting used to fix a long member for supporting articles to a protruding portion that protrudes horizontally in a cross-sectional view of a structural steel building material, and to increase the support strength of the suspension fitting, wherein the suspension fitting comprises a support portion that supports the lower surface of the protruding portion, a crimping portion fitted with a tightening bolt that tightens and fixes the protruding portion from above, and a connecting portion that integrally connects the support portion and the crimping portion, and an insertion space for inserting a structural building material is provided between the support portion and the crimping portion, and the fitting has a roughly U-shape in a side view, The reinforcing fitting for a suspension fitting is characterized in that it is possible to support a first long member by inserting it into the suspension fitting, or to support a second long member on a pendulum fitting that is swingably provided on the support part, and the reinforcing fitting comprises a first locking portion that locks onto the building structural material and a second locking portion that does not interfere with the long member and locks onto the suspension fitting, and the reinforcing fitting locks onto the suspension fitting and the building structural material, thereby increasing the support strength of the suspension fitting to the building structural material. In the reinforcing fitting for a suspension fitting of the present invention, the suspension fitting can selectively support one of the first or second long members during initial construction, and can support a second or more long members during additional construction, thus offering high convenience.

[0017] In the present invention, it is preferable that the reinforcing fitting comprises an arm-shaped portion that surrounds the outer surface of the suspension fitting and extends to the tip, a first locking portion provided at the tip of the arm-shaped portion for locking to the building structural material, and a second locking portion provided at the rear end of the arm-shaped portion for locking to the connecting portion.

[0018] In the present invention, the second locking portion is provided with a pressing member that presses against the connecting portion to reinforce the locking force of the first locking portion to the building structural material via the arm-shaped portion. The pressing member comprises a bolt member that screws into the base of the arm-shaped portion and a plate member that abuts against the connecting portion of the hanging fitting. It is preferable that the distance between the base of the arm-shaped portion and the plate member is increased by screwing in the bolt member, thereby increasing the force with which the first locking portion at the tip of the arm-shaped portion abuts against the building structural material.

[0019] In the present invention, the building structural material is a lip channel steel having a height portion that runs vertically in a cross-sectional view, upper and lower side portions that extend from above and below the height portion toward the opening end, and a lip portion that protrudes opposite to the upper and lower side portions at the opening end, the suspension fitting is attached from the lower side portion which is the protruding portion toward the lip portion, the reinforcing fitting has a first locking portion that locks to the inside of the lip portion of the lip channel steel, and a pressing member is provided on the second locking portion, and by pressing the connecting portion with the pressing member, the locking force of the first locking portion toward the inside of the lip portion is reinforced via the arm-shaped portion, thereby increasing the support strength of the suspension fitting toward the lip channel steel.

[0020] In the present invention, the building structural material is an angle steel having a first vertical side and a second side projecting horizontally in a cross-sectional view, the suspension fitting is attached to the second side as the projection, the reinforcing fitting has a first locking portion that extends beyond the second side of the angle steel and locks from the top to the first side, the second locking portion is provided with a pressing member, and by pressing the connecting portion with the pressing member, the locking force of the first locking portion to the first side via the arm-shaped portion is reinforced, thereby increasing the support strength of the suspension fitting to the building structural material.

[0021] In the present invention, the building structural material is an H-shaped steel beam with a flange protruding horizontally, the suspension fitting is attached to one of the flanges as the protruding portion, the reinforcing fitting has a first locking portion that locks to the tip portion of the other flange of the H-shaped steel beam, and a pressing member is provided on the second locking portion. By pressing the connecting portion with the pressing member, the locking force of the first locking portion on the tip portion of the other flange via the arm-shaped portion is reinforced, thereby increasing the support strength of the suspension fitting to the building structural material.

[0022] In the present invention, it is preferable to provide an elastic body between the base of the arm-like portion and the plate member, and to expand the distance between the base of the arm-like portion and the plate member by the elastic body.

[0023] In the present invention, the building structural material is a lip groove-shaped steel having a height portion along the vertical direction in a sectional view, upper and lower side portions extending from the upper and lower sides of the height portion in the direction of the opening end, and upper and lower lip portions protruding from the upper and lower side portions facing each other at the opening end. The hanging bracket is attached from the lower side portion as the protruding portion to the lower lip portion. The reinforcing bracket has a first locking portion locked inside the lower lip portion of the lip groove-shaped steel. A contact end surface to the connecting portion is formed on the second locking portion, and a first insertion hole for inserting a bolt in the vertical direction is provided. Further, a first reinforcing body locked to the upper lip portion of the lip groove-shaped steel is provided. The first reinforcing body has a base end portion provided with a second insertion hole for inserting a bolt in the vertical direction, an arm-like portion extending from the base end portion to the lip groove-shaped steel, and a third locking portion locked inside the upper lip portion of the lip groove-shaped steel at the tip of the arm-like portion. The first locking portion of the reinforcing bracket is locked inside the lower lip portion for installation, the contact end surface is brought into contact with the connecting portion, and with the third locking portion of the first reinforcing body locked inside the upper lip portion, nuts are screwed onto the bolts inserted through the first insertion hole and the second insertion hole, and the bolts and nuts are used to fasten the reinforcing bracket and the first reinforcing body to each other. By doing so, it is preferable that the support strength of the third long member with respect to the lip groove-shaped steel is increased by the reinforcing bracket and the first reinforcing body.

[0024] In the present invention, the building structural member is an H-shaped steel provided with a flange protruding in the horizontal direction, the hanging bracket is attached to one flange as the protruding portion, and the reinforcing bracket includes both side portions attached to the support portion surrounding the left and right outer side surfaces of the attachment portion of the support portion, and a connecting portion formed with screw holes for connecting the both side portions, which is a U-shaped connecting bracket in a plan view, a tip plate locked to the other flange, and a continuous member of all screws for connecting between the connecting bracket and the tip plate. It is preferable that the reinforcing bracket locks to the hanging bracket and the H-shaped steel of the building structural member to enhance the support strength of the hanging bracket with respect to the building structural member.

[0025] In the present invention, the building structural member is a lip groove-shaped steel provided with a height portion along the vertical direction in a sectional view, upper and lower side portions extending from the upper and lower portions of the height portion in the direction of the open end, and lip portions protruding oppositely from the upper and lower side portions at the open end. The hanging bracket is attached from the lower side portion as the protruding portion to the lip portion. The reinforcing bracket includes upper and lower continuous portions extending from above and below from the opposite side of the insertion space of the connecting portion of the hanging bracket to the height portion of the lip groove-shaped steel, and an elastic body that hinges the proximal ends of the upper and lower continuous portions and biases the distal ends of the upper and lower continuous portions in the closing direction. It is preferable that the reinforcing bracket abuts the beam portion adjacent to the proximal end against the connecting portion and locks to the height portion at the distal end of the continuous portion to enhance the support strength of the hanging bracket with respect to the building structural member.

[0026] In the present invention, the building structural material is a lip channel steel having a height portion that runs vertically in a cross-sectional view, upper and lower side portions that extend from above and below the height portion toward the opening end, and a lip portion that protrudes opposite to the upper and lower side portions at the opening end. The suspension fitting is attached from the lower side portion, which is the protruding portion, to the lip portion. The reinforcing fitting is provided on the suspension fitting and surrounds the outer surface of the pendulum fitting, with an arm-shaped portion that extends downward away from the mounting bolt, a first locking portion provided at the tip of the arm-shaped portion that locks into the height portion of the lip channel steel, and a second locking portion provided at the rear end of the arm-shaped portion that inserts and fixes a first elongated member that is inserted through the insertion hole and the inside of the connecting portion. It is preferable that the reinforcing fitting locks to the suspension fitting and the building structural material to increase the support strength of the suspension fitting to the building structural material. [Effects of the Invention]

[0027] The reinforcing fitting for suspension fittings of the present invention provides excellent effects, such as increasing the degree of freedom in using suspension fittings during installation and reinforcing the support strength of the suspension fittings. [Brief explanation of the drawing]

[0028] [Figure 1] This is a perspective view illustrating a reinforcing fitting for a suspension fitting according to the first embodiment of the present invention. [Figure 2] This is a perspective view illustrating the state in which the reinforcing bracket according to the first embodiment is attached to and fixed to the suspension bracket. [Figure 3] This is a perspective view illustrating the state in which the reinforcing bracket according to the second embodiment is attached to and fixed to the suspension bracket. [Figure 4] This is a perspective view illustrating the state in which the reinforcing bracket according to the third embodiment is attached to and fixed to the suspension bracket. [Figure 5] This is a perspective view illustrating a reinforcing bracket for a suspension fitting according to the fourth embodiment. [Figure 6] This is a perspective view illustrating the state in which the reinforcing bracket according to the fourth embodiment is attached to and fixed to the suspension bracket. [Figure 7]This is a perspective view illustrating a reinforcing bracket for a suspension fitting according to the fifth embodiment. [Figure 8] This is a perspective view illustrating the state in which the reinforcing bracket according to the fifth embodiment is attached to and fixed to the suspension bracket. [Figure 9] This is a perspective view illustrating a reinforcing bracket for a suspension fitting according to the sixth embodiment. [Figure 10] This is an exploded perspective view of the reinforcing bracket and the first reinforcing body according to the sixth embodiment. [Figure 11] This is a perspective view illustrating the state in which the reinforcing bracket and the first reinforcing body according to the sixth embodiment are attached to and fixed to the suspension bracket. [Figure 12] This is a perspective view illustrating the fixed state in which the reinforcing bracket and the first reinforcing body according to the sixth embodiment are attached to the suspension bracket. [Figure 13] This is a perspective view illustrating a reinforcing bracket for a suspension fitting according to the seventh embodiment. [Figure 14] This is an exploded perspective view of the seventh embodiment. [Figure 15] This is a perspective view illustrating the state in which the reinforcing bracket according to the seventh embodiment is attached to and fixed to the suspension bracket. [Figure 16] This is a perspective view illustrating a reinforcing bracket for a suspension fitting according to the eighth embodiment. [Figure 17] This is a perspective view illustrating the state in which the reinforcing bracket according to the 8th embodiment is attached to and fixed to the suspension bracket. [Figure 18] This is a perspective view illustrating a reinforcing bracket for a suspension fitting according to the ninth embodiment. [Figure 19] This is an exploded perspective view of the ninth embodiment. [Figure 20] This is a perspective view illustrating the state in which the reinforcing bracket according to the 9th embodiment is attached to and fixed to the suspension bracket. [Figure 21] This diagram illustrates the problems encountered when supporting long members with conventional suspension brackets. [Modes for carrying out the invention]

[0029] Embodiments of the present invention will be described below with reference to the accompanying drawings.

[0030] [First Embodiment] Figure 1 is a perspective view illustrating a reinforcing bracket for a suspension fitting according to the first embodiment. Figure 2 is a perspective view illustrating the reinforcing bracket according to the first embodiment in a state where it is attached to and fixed to the suspension fitting.

[0031] As shown in Figures 1 and 2, in a structural member for building construction (lip channel steel 14) made of shaped steel, a long member (10A, 10B) for supporting articles, such as a fully threaded member, is fixed to a protruding portion (lower side portion 18d) that protrudes horizontally in a cross-sectional view, using a suspension fitting 12. This relates to a reinforcing fitting 34 for a suspension fitting, which is used between the structural member for building construction and the suspension fitting 12 to stabilize the support of the suspension fitting 12. In Figures 1 and below, the axis center positions of the first and second long members are indicated by dashed lines 10A and 10B as needed during installation, and the third long member 10C is indicated by a solid line.

[0032] In the first embodiment, the structural material for the building is a lip channel steel 14, which comprises a height portion 16 that runs vertically in cross-sectional view, upper and lower side portions 18u and 18d that extend from above and below the height portion 16 toward the opening 14a, and lip portions 20u and 20d that protrude from the upper and lower side portions 18u and 18d toward the opening 14a at the end of the opening 14a.

[0033] The suspension fitting 12 of the first embodiment is attached to the lower side portion 18d of the lip channel steel 14, extending from the protruding portion to the lip portion 20d. It comprises a support portion 22 that supports the lower surface of the lower side portion 18d, a crimping portion 26 to which a tightening bolt 24 is attached for tightening and fixing the lower side portion 18d of the protruding portion from above, and a connecting portion 28 that integrally connects the support portion 22 and the crimping portion 26. An insertion space 30 is provided between the support portion 22 and the crimping portion 26 for inserting the lower side portion 18d of the lip channel steel 14, giving it a roughly U-shape in side view. The support portion 22, crimping portion 26, and connecting portion 28 of the suspension fitting 12 are formed by bending a metal plate into a hollow shape.

[0034] The first long member (with its axis center indicated by a dashed-dot line 10A) can be supported in an inserted state through the insertion holes 22b and 26b formed in the lower surface of the support portion 22 and the upper surface of the crimping portion 26, and within the hollow connecting portion 28. The second long member (with its axis center indicated by a dashed-dot line 10B) can be supported by the pendulum fitting 32 which is swingably mounted on the support portion 22. The support portion 22 has contact plate portions 22a, 22a formed at its upper end that abut against the lower surface of the lower edge portion 18d of the lip channel steel 14. In addition, the support portion 22 has multiple mounting holes 22c for the pendulum fitting 32 formed on both the lip channel steel 14 side and the first long member side. In the first embodiment, the pendulum fitting 32 is attached to the lip channel steel 14 side so as not to interfere with the first long member. Furthermore, if you initially install only the first long member and then wish to suspend the second long member, it is also possible to install the pendulum fitting 32 into the mounting hole 22c.

[0035] The reinforcing fitting 34 functions to increase the support strength of the suspension fitting 12 against the lip channel steel 14 by engaging with the suspension fitting 12 and the lip channel steel 14.

[0036] The reinforcing fitting 34 includes a first locking portion 34a that engages with the lip channel steel 14 of the building structural material so as not to restrict the swinging of the pendulum fitting 32, and a second locking portion 34b that does not interfere with the insertion position of the first long member and engages with the suspension fitting 12 via a pressing member 36.

[0037] The reinforcing fitting 34 comprises an arm-shaped portion 34c that surrounds the outer surface of the connecting portion 28 of the suspension fitting 12 and extends upward away from the mounting portion 32a, which consists of bolts of the pendulum fitting 32; a first locking portion 34a that is L-shaped in side view and has a hook-shaped locking end 34a1 at the tip of the arm-shaped portion 34c that locks onto the lip portion 20d of the lip channel steel 14; and a second locking portion 34b that locks onto the connecting portion 28 provided at the rear end of the arm-shaped portion 34c. The pendulum fitting 32 has a strip-shaped metal body in which both side portions 32d, 32d are bent upwards in a U-shape from both sides of the rectangular lower end portion 32c, and a gap is provided between the upper ends of both side portions 32d, 32d so that the support portion 22 can be attached by sandwiching both sides from the outside. Mounting holes (through holes) for mounting portions 32a made of bolts are formed at the upper ends of both side portions 32d, 32d, and mounting holes (through holes) for the long member (second long member 10B) (the same as those shown as 32b in Figure 4) are formed at the lower end portion 32c.

[0038] The reinforcing fitting 34 has a first locking portion 34a whose locking end 34a1 locks inside the lip portion 20d of the lip channel steel 14, and a second locking portion 34b is provided with a pressing member 36. By pressing the connecting portion 28 with the pressing member 36, the locking force of the first locking portion 34a on the inside of the lip portion 20d is reinforced via the arm-shaped portion 34c, thereby increasing the support strength of the suspension fitting 12 on the lip channel steel 14.

[0039] As shown in Figure 1, the pair of arm-shaped portions 34c, 34c that extend forward in a strip-like shape have locking ends 34a1, 34a1 of the first locking portions 34a, 34a formed at their tips in an L-shape. The base ends (bases) of the arm-shaped portions 34c, 34c are connected by a flat continuous plate 34c1 (part of the second locking portion 34b).

[0040] In other words, the second locking portion 34b comprises a continuous plate 34c1 and a pressing member 36.

[0041] The pressing member 36 comprises a bolt member 36b that screws into a flat continuous plate 34c1 connecting the base ends (bases) of the arm-shaped portions 34c, 34c, and a pressing plate (plate member) 36a that abuts against the connecting portion 28 of the suspension fitting 12. By screwing in the bolt member 36b, the distance between the base ends of the arm-shaped portions 34c, 34c and the pressing plate 36a is increased, thereby increasing the force with which the first locking portions 34a, 34a at the tips of the arm-shaped portions 34c, 34c abut against the lip channel steel 14 of the building structural material. The continuous plate 34c1 has a nut-shaped female thread portion 34c2 formed on it by crimping a flange nut, spot welding a nut, or burring. The pressing member 36 includes a pressing plate 36a for pressing the connecting portion 28 of the suspension fitting 12, a bolt member 36b for screwing into the female thread portion 34c2 to press the pressing plate 36a, and a nut member 36c for screwing into the bolt member 36b to prevent the bolt member 36b from loosening. The nut member 36c contacts the surface of the female thread portion 34c2 of the flange nut, thereby providing a double nut effect.

[0042] In the first embodiment, the suspension fitting 12 is fixed to the lower edge 18d of the lip channel steel 14 by tightening a fastening bolt 24, and the reinforcing fitting 34 functions to reinforce the fixing between the suspension fitting 12 and the lip channel steel 14 by engaging with them.

[0043] In the first embodiment, with the reinforcing bracket 34 hooked onto the lower lip portion 20d, the pressing plate 36a of the pressing member 36 is pressed against the opposite side of the insertion space 30 of the connecting portion 28, the bolt member 36b is extended, the arm-shaped portion 34c is retracted relative to the suspension bracket 12, and a force is applied to pull the lip portion 20d into the insertion space 30, so that the lip portion 20d can firmly contact the inner surface of the connecting portion 28 on the insertion space 30 side. Then, by tightening the nut member 36c toward the female thread portion 34c2, the bolt member 36b can be prevented from loosening, and a double nut effect can be achieved by the nut member 36c contacting the surface of the female thread portion 34c2.

[0044] Therefore, the reinforcing bracket can reinforce the locking force of the first locking portion 34a on the inside of the lip portion 20d via the arm-shaped portion 34c, thereby increasing the support strength of the suspension bracket 12 on the lip channel steel 14. In addition, since the reinforcing bracket 34 does not interfere with the mounting location of the pendulum bracket 32, it can be installed without interfering with multiple long members (first long member, second long member).

[0045] [Second Embodiment] Next, a reinforcing fitting for a suspension fitting according to the second embodiment will be described.

[0046] Figure 3 is a perspective view illustrating the state in which the reinforcing bracket 42 according to the second embodiment is attached to and fixed to the suspension bracket 12. The suspension bracket 12 and the like have the same configuration as in the first embodiment, and the same parts are denoted by the same reference numerals.

[0047] As shown in Figure 3, in the second embodiment, the structural material for construction is an angle steel 40 in which a first side portion 40a installed along the vertical direction and a second side portion 40b projecting horizontally are continuous at a 90-degree angle via a top portion 40c in a cross-sectional view.

[0048] The suspension fitting 12, which is fixed to the angle steel 40 of the building structure, is attached and fixed to the angle steel 40 by inserting the second side portion 40b, which is a protruding part of the angle steel 40, into the insertion space 30, supporting it by the support portion 22 abutting against the lower surface of the second side portion 40b, and tightening and fixing the upper surface of the second side portion 40b with the tightening bolt 24 of the crimping portion 26.

[0049] The reinforcing fitting 42 comprises an arm-shaped portion 42c that surrounds the outer surface of the connecting portion 28 of the suspension fitting 12 and avoids the mounting portion of the pendulum fitting 32, with its tip extending from above the second side portion 40b; a first locking portion 42a provided at the tip of the arm-shaped portion 42c for locking to a building structural material; and a second locking portion 42b provided at the rear end of the arm-shaped portion 42c for locking to the connecting portion 28 via a pressing member 36.

[0050] More specifically, the reinforcing bracket 42 has an arm-shaped portion 42c that extends from the suspension bracket 12 side over the upper surface of the second side portion 40b of the angle steel 40, and a first locking portion 42a, which is bent into an L shape, locks from the top portion 40c to the outer surface of the first side portion 40a. The base ends (bases) of the arm-shaped portions 42c, 42c are connected by a flat continuous plate 42c1 (part of the second locking portion 42b).

[0051] The second locking portion 42b is provided with a continuous plate 42c1 and a pressing member 36 having the same structure as in the first embodiment. The continuous plate 42c1 has a nut-shaped female screw portion 42c2 formed on it by burring or the like.

[0052] In the second embodiment, the reinforcing bracket 42 presses the connecting portion 28 of the suspension bracket 12 with the pressing member 36 to reinforce the support force of the suspension bracket 12 toward the angle steel 40, and also pulls the arm-shaped portion 42c which is locked to the angle steel 40 by the first locking portion 42a, thereby reinforcing the locking force of the suspension bracket 12 toward the angle steel 40 by the reinforcing bracket 42 and increasing the support strength of the suspension bracket 12 toward the angle steel 40. Furthermore, since the reinforcing bracket 34 does not interfere with the mounting location of the pendulum bracket 32, it can be installed without interfering with multiple long members (first long member, second long member).

[0053] [Third Embodiment] Next, a reinforcing fitting for a suspension fitting according to the third embodiment will be described.

[0054] Figure 4 is a perspective view illustrating the state in which the reinforcing bracket 46 according to the third embodiment is attached to and fixed to the suspension bracket 12. The same reference numerals are used for the same parts as the suspension bracket 12, pressing member 36, etc.

[0055] As shown in Figure 4, in the third embodiment, the structural building material for fixing the suspension fitting 12 is an H-shaped steel beam 44 with flanges that protrude horizontally. The H-shaped steel beam 44 has a vertical web 44a and flanges 44b that are continuous above and below the web 44a. The lower flange 44b has one flange 44b1 and the other flange 44b2 that protrude in the width direction. The reinforcing fitting 46 is used on the suspension fitting 12 attached to one of the protruding flanges 44b1 to increase the support strength of the suspension fitting 12.

[0056] The reinforcing bracket 46 has an arm-shaped portion 46c positioned along the lower flange 44b, with the arm-shaped portion 46c extending from one flange 44b1 through the underside of the lower flange 44b to the other flange 44b2, a first locking portion 46a provided at the tip of the arm-shaped portion 46c that bends upward in an L-shape and locks onto the tip of the other flange 44b2, and a second locking portion 46b provided at the rear end of the arm-shaped portion 46c that locks onto the connecting portion 28 via a pressing member 36. The base ends (bases) of the arm-shaped portions 46c, 46c are connected by a flat continuous plate 46c1 (part of the second locking portion 46b). The continuous plate 46c1 has a female thread formed therein, similar to the structure of the first embodiment, into which a bolt member 36b is screwed.

[0057] A pressing member 36 is provided at the second locking portion 46b, and the reinforcing fitting 46 exerts a force that pulls the arm-shaped portion 46c toward the flange 44b1 by screwing in the bolt member 36b of the pressing member 36, thereby pressing the connecting portion 28 of the suspension fitting 12. Therefore, the first locking portion 46a reinforces the locking force to the tip portion of the other flange 44b2, thereby increasing the support strength of the suspension fitting 12 to the building structural material.

[0058] As shown in Figure 4, the arm-shaped portion 46c is attached to the side of the connecting portion 28, near the top of the pendulum fitting 32, above the mounting portion 32a which is made of a bolt member, and in a position that does not interfere with the mounting portion 32a.

[0059] [Fourth Embodiment] Figure 5 is a perspective view illustrating the reinforcing bracket for the suspension fitting according to the fourth embodiment, and Figure 6 is a perspective view illustrating the reinforcing bracket according to the fourth embodiment in a state where it is attached to and fixed to the suspension fitting. The same reference numerals are used for the same parts as in the first embodiment, such as the suspension fitting 12, lip channel steel 14, and pressing member 36.

[0060] As shown in Figure 6, the structural material for the building is a lip channel steel 14. The suspension fitting 12 is attached from the lower edge 18d, which is a protruding part, to the lip portion 20d.

[0061] As shown in Figures 5 and 6, in the fourth embodiment, the reinforcing fitting 34A has a first locking portion 34a that locks onto the lip channel steel 14, a locking end 34a1 at the tip of 34a, and arm-shaped portions 34c, 34a2 formed on 34a1 that extend outward along the spacing direction of 34c (the length direction of the lip portion 20d). Otherwise, it is the same as the reinforcing fitting 34 of the first embodiment, and the same parts are denoted by the same reference numerals.

[0062] In the fourth embodiment, the reinforcing fitting 34A, similar to the reinforcing fitting 34 of the first embodiment, functions to increase the support strength of the suspension fitting 12 to the lip channel steel 14 by engaging with the suspension fitting 12 and the lip channel steel 14. Furthermore, since the rib portion 34a2 contacts the inner surface of the lip portion 20d with a surface, even if an external force is applied, the frictional force due to the surface makes it difficult for the lip portion 20d to shift position. Also, compared to the first embodiment in which the locking end 34a1 contacts the inner surface of the lip portion 20d with a line (linear), the fourth embodiment allows the support strength of the suspension fitting 12 to the lip channel steel 14 by the reinforcing fitting 34A to be higher than in the first embodiment.

[0063] [Fifth Embodiment] Figure 7 is a perspective view illustrating the reinforcing fitting for the suspension fitting according to the fifth embodiment, and Figure 8 is a perspective view illustrating the state in which the reinforcing fitting according to the fifth embodiment is attached to and fixed to the suspension fitting. The same reference numerals are used for the same parts as in the fourth embodiment, such as the lip channel steel 14, suspension fitting 12A, reinforcing fitting 34, and pressing member 36.

[0064] The reinforcing fitting 34B according to the fifth embodiment is modified by adding an elastic body 50 made of a metal coil spring between the continuous plate 34c1 connecting the base ends (bases) of the arm-shaped portions 34c and the push plate (plate member) 36a, and applying an elastic force with the elastic body 50 to widen the gap between the base ends of the arm-shaped portions 34c and the push plate (plate member) 36a.

[0065] When a worker installs the reinforcing fitting 34B on the lip channel steel 14 and the suspension fitting 12A, with the bolt member 36b retracted, the arm-shaped portion 34c can be moved forward by reducing the distance between the continuous plate 34c1 and the push plate (plate member) 36a against the elastic force of the elastic body 50.

[0066] Therefore, when installing the reinforcing bracket 34B, the worker can position it by hooking the second locking portion 34b onto the suspension bracket 12A, moving the arm-shaped portion 34c forward and temporarily hooking it onto the first locking portion 34a, and then extending the bolt member 36b forward to strengthen the locking force of the reinforcing bracket 34B and securely fix the pressing member 36. For this reason, when installing the reinforcing bracket 34B at a height, it is possible to hold the reinforcing bracket 34B with one hand to perform temporary fixing work and then fix (permanently fix) it. In high-altitude work, when attaching a reinforcing bracket 34 to an existing suspension bracket 12A, in the first embodiment, since there is no elastic body 50, it is necessary to support the reinforcing bracket with one hand and screw in the bolt member 36b of the pressing member 36 with the other hand and prevent loosening with the nut member 36c, thus requiring two-handed work. However, in the fifth embodiment, it can be held with one hand and temporarily fastened, reducing the need for two-handed work, improving the worker's work efficiency, shortening construction time, and offering greater convenience. Furthermore, the nut member 36c contacts the surface of the female threaded portion 34c2, thereby achieving a double-nut effect.

[0067] [Sixth Embodiment] Figures 9 to 11 and Figure 12, which will be described later, are explanatory diagrams of the reinforcing fitting for the suspension fitting according to the sixth embodiment. Figure 9 is a perspective view explanatory diagram of the reinforcing fitting or the first reinforcing body, Figure 10 is an exploded perspective view of the reinforcing fitting and the first reinforcing body, and Figure 11 is a perspective view explanatory diagram of the reinforcing fitting and the first reinforcing body attached to and fixed to the suspension fitting. The same reference numerals are used for the same parts as in the lip channel steel 14 and suspension fitting 12A of the fifth embodiment.

[0068] As shown in Figure 11, the structural material for construction is a lip channel steel 14, and the suspension fitting 12A is attached from the lower edge portion 18d, which is a protruding part, to the lower lip portion 20d. The sixth embodiment is a structure in which the mounting strength of the suspension fitting 12A attached to the lip channel steel 14 is increased by a reinforcing fitting 52 fixed to the lower lip portion 20d of the lip channel steel 14 and a first reinforcing body 56 fixed to the upper lip portion 20u.

[0069] The reinforcing bracket 52 comprises arm-shaped portions 52c, 52c that surround the outer surface of the connecting portion 28 of the suspension bracket 12A and extend their tips away from the mounting portion of the pendulum bracket 32, first locking portions 52a, 52a provided at the tips of the arm-shaped portions 52c, 52c for locking onto the lip channel steel 14 of the building structural material, and a second locking portion 52b provided to integrate the rear ends of the arm-shaped portions 52c, 52c and lock onto the connecting portion 28. A first reinforcing body 56 is provided that locks onto the lip portion 20u on the lip channel steel 14. The reinforcing bracket 52 and the first reinforcing body 56 are connected by bolts 54a and tightened and fixed by screwing on nuts 54b.

[0070] More specifically, as shown in Figures 9 and 10, the reinforcing fitting 52 has a roughly triangular shape that widens towards the front when viewed from the side, and is plate-shaped that extends to sandwich both sides of the connecting portion 28 of the suspension fitting 12A. First locking portions 52a, 52a are formed at the tips of the pair of arm-shaped portions 52c, 52c, and a second locking portion 52b is formed at the base end (rear end). The first locking portions 52a, 52a have a roughly plow-like or comb-like shape with two (or more) grooves 52a1, 52a1 that open downwards when viewed from the side, in order to attach (sandwich) and lock the lower lip portion 20d of the lip channel steel 14. The second locking portion 52b is formed in the shape of a plate that extends horizontally by connecting the rear ends of a pair of arm-shaped portions 52c, 52c that extend on both sides of the connecting portion 28, and has a contact end surface 52b1 that abuts against the connecting portion 28 on the side of the hanging fitting 12A, and is provided with an insertion hole 52b2 through which a bolt 54a is inserted in the vertical direction.

[0071] In the sixth embodiment, as shown in Figures 9 to 11, in addition to the structure of the reinforcing fitting 52, a first reinforcing body 56 is provided that engages with the lip portion 20u on the lip channel steel 14. The first reinforcing body 56 has a flat base end portion 56b through which a bolt 54a is inserted in the vertical direction, arm-shaped portions 56c, 56c extending in pairs from the base end portion 56b to the lip channel steel 14, and a roughly plow-shaped or comb-shaped structure with two (or more) grooves 56a1, 56a1 that open upward in a side view formed at the tips of the arm-shaped portions 56c, 56c, and a third engaging portion 56a, 56a that engages with the inside of the lip portion 20u on the lip channel steel 14. The first reinforcing member 56 has the same structure as the reinforcing bracket 52 shown in Figure 9, but is installed upside down (the reference numerals for each part of the first reinforcing member 56 are shown in parentheses in Figure 9). As shown in Figure 11, the first reinforcing member 56 and the reinforcing bracket 52 are installed in a symmetrical manner with their tops and bottoms reversed.

[0072] As shown in Figure 11, in the reinforcing bracket 52, a bolt 54a is inserted through the insertion hole 52b2, and nuts 54b, 54b are screwed onto the bolt 54a from above and below, sandwiching the second locking portion 52b from above and below. The second locking portion 52b is tightened and fixed to the bolt 54a by the upper and lower nuts 54b, 54b, and at the same time, the base end portion 56b of the first reinforcing body 56 is sandwiched and fixed with the bolt 54a and nuts 54b, thereby fixing the distance between the reinforcing bracket 52 and the first reinforcing body 56, ensuring that the engagement of the reinforcing bracket 52 with the lower lip portion 20d and the engagement of the first reinforcing body 56 with the upper lip portion 20u are secure, resulting in a structure that is securely supported by the lip channel steel 14. In this case, by contacting the connecting portion 28 with the abutting end face 52b1, the locking force of the first locking portion 52a toward the inside of the lower lip portion 20d is reinforced via the arm-shaped portion 52c, thereby increasing the support strength of the suspension fitting 12A toward the lip channel steel 14.

[0073] [Sixth Embodiment] Figure 12 is a perspective view illustrating the state in which the reinforcing fitting according to the sixth embodiment is attached to and fixed to the suspension fitting. The same reference numerals are used for the same parts as in Figure 11, such as the lip channel steel 14, the reinforcing fitting 52, and the first reinforcing body 56. The suspension fitting 12B is smaller than the suspension fitting 12A in Figure 11, and the tip of the crimping portion 26 protruding from the opening 14a inside the lip channel steel 14 is formed at the same position as the tip of the reinforcing fitting 52.

[0074] The suspension fitting 12B is attached to the lower side portion 18d of the lip channel steel 14, extending from the lower side portion 18d to the lip portion 20d. It comprises a support portion 22 that supports the lower surface of the lower side portion 18d, a crimping portion 26 to which a tightening bolt 24 is attached for tightening and fixing the lower side portion 18d of the protruding portion from above, and a connecting portion 28 that integrally connects the support portion 22 and the crimping portion 26. An insertion space 30 is provided between the support portion 22 and the crimping portion 26 for inserting the lower side portion 18d of the lip channel steel 14, giving it a roughly U-shape in side view.

[0075] The first long member 10A is supported by being inserted through the insertion holes 22b and 26b formed in the lower surface of the support portion 22 and the upper surface of the crimping portion 26, and within the hollow connecting portion 28. The first long member 10A is fastened and secured to the hanging bracket 12B from above and below with nuts 10A1, 10A1. The suspension fitting 12B in Figure 12 is used to attach the first long member 10A, but it has a compact structure to which the pendulum fitting 32 cannot be attached, and does not take up much space. Furthermore, although the suspension fitting 12B in Figure 12 is smaller than that in Figure 11, the appropriate locking groove can be selected from among the multiple available grooves, so this embodiment can be applied regardless of the size of the suspension fitting. Otherwise, it is the same as in Figure 11.

[0076] [Seventh Embodiment] Figure 13 is a perspective view of the reinforcing bracket for the suspension fitting according to the seventh embodiment, Figure 14 is an exploded perspective view of the reinforcing bracket, and Figure 15 is a perspective view of the reinforcing bracket according to the eighth embodiment in a state where it is attached to and fixed to the suspension fitting. The same reference numerals are used for the same parts as in the third embodiment, such as the H-shaped steel beam 44 and the suspension fitting 12.

[0077] In the seventh embodiment, the structural material for the building is an H-shaped steel beam 44 with a flange that protrudes horizontally, and the suspension fitting 12 is attached to one flange 44b1 of the H-shaped steel beam 44, which is the protruding part.

[0078] The suspension fitting 12 has a structure that supports the first long member 10A in an inserted state through insertion holes 22b and 26b formed in the lower surface of the support portion 22 and the upper surface of the crimping portion 26, and within the hollow connecting portion 28. The pendulum fitting is not attached. The reinforcing fitting 70 has a U-shaped connecting fitting 70a in plan view, which has both side portions 70a1, 70a1 that surround the left and right outer surfaces of the support portion 22 of the suspension fitting 12 and are attached to the support portion 22, and a connecting portion 70a2 that connects both side portions 70a1, 70a1 and has screw holes 70a3 formed therein. It also has a tip plate 70b which has a notch 70b1 that locks onto the other flange 44b2 and an insertion hole 70b2 through which a continuous member 70c passes, and a continuous member 70c which is a screw member that connects the connecting fitting 70a and the tip plate 70b. The continuous member 70c has a screw-type nut member 70c1 for tightening and fixing.

[0079] Both sides 70a1, 70a1 have a through hole 70a11 for a bolt 58 on one side and a screw hole 70a12 for screwing in a bolt 58 on the other side. The pendulum fitting is not installed on the support part 22 of the suspension fitting 12. The both sides 70a1, 70a1 of the connecting fitting 70a are attached and fixed by inserting bolts 58 through the mounting holes 22c of the support part 22 (the side that does not interfere with the first long member 10A). The first long member 10A is inserted through the insertion hole 22b on the lower surface of the support part 22, the insertion hole 26b on the upper surface of the crimping part 26, and inside the connecting part 28 of the suspension fitting 12. Then, nuts 10A1, 10A1 are screwed onto the first long member 10A from above and below the suspension fitting 12, thereby tightening and fixing the first long member 10A to the suspension fitting 12.

[0080] In the seventh embodiment, the reinforcing fitting 70 engages with the suspension fitting 12 and the H-shaped steel 44 of the building structure, and by tightening the nut member 70c1, the distance between the connecting fitting 70a and the end plate 70b is reduced, thereby increasing the support strength of the suspension fitting 12.

[0081] When installing the reinforcing bracket 70, the connecting bracket 70a is attached to the suspension bracket 12 with bolts 58, the suspension bracket 12 is attached to one flange 44b1 of the H-shaped steel 44, the nut member 70c1 of the continuous member 70c is loosened and the notch 70b1 of the tip plate 70b is hooked onto the other flange 44b2, and the nut member 70c1 is tightened, thereby firmly fixing the reinforcing bracket 70 to the suspension bracket 12 and the H-shaped steel 44 and increasing the support strength of the suspension bracket.

[0082] [Eighth Embodiment] Figure 16 is a perspective view illustrating the reinforcing fitting for the suspension fitting according to the eighth embodiment, and Figure 17 is a perspective view illustrating the state in which the reinforcing fitting according to the eighth embodiment is attached to and fixed to the suspension fitting. The lip channel steel 14, suspension fitting 12, etc. of the first embodiment are denoted by the same reference numerals for the same parts.

[0083] As shown in Figures 16 and 17, in the eighth embodiment, the structural material for the building is a lip channel steel 14, and the suspension fitting 12 is attached from the lower side portion 18d, which is a protruding part, to the lip portion 20d.

[0084] The reinforcing fitting 74 comprises upper and lower continuous parts 74u and 74d that extend from the outer surface opposite the insertion space 30 of the connecting part 28 of the suspension fitting 12 to the height part 16 of the lip channel steel 14, and an elastic body 74s consisting of a coil spring that connects the base ends 74u1 and 74d1 of the upper and lower continuous parts 74u and 74d with a hinge 74h and biases the tips of the upper and lower continuous parts 74u and 74d in a closing direction, and the overall shape is a large pinch or clip shape.

[0085] The reinforcing fitting 74 has beam sections 74a, 74a installed at adjacent locations of the base ends 74u1 and 74d1, and the lower beam section 74a abuts against the connecting section 28, and the tips of the continuous sections 74u and 74d are locked to the upper and lower parts 16, thereby increasing the support strength of the suspension fitting 12 for the lip channel steel 14.

[0086] In a side view, the upper and lower continuous sections 74u and 74d have straight base ends 74u1 and 74d1, and semicircular tip ends 74u2 and 74d2. The semicircular tip ends 74u2 and 74d2 extend beyond the upper and lower sides 18u and 18d, and the inside of the tip is locked to the height section 16. The lower semicircular tip 74d2 passes under the mounting section 32a, which is made up of mounting bolts for the pendulum fitting 32, and can be installed without interfering with the mounting section 32a.

[0087] According to the eighth embodiment, the reinforcing fitting 74 can be attached to the suspension fitting 12 by clamping the lip channel steel 14 from the suspension fitting 12 side with the reinforcing fitting 74 in the open position, thereby increasing the strength with which the suspension fitting 12 is supported by the lip channel steel 14 through the elastic force of the elastic body 74s. In particular, it can be easily attached to existing suspension fittings 12, making it highly convenient.

[0088] [Ninth Embodiment] Figure 18 is a perspective view of the reinforcing bracket for the suspension fitting according to the ninth embodiment, Figure 19 is an exploded perspective view of the reinforcing bracket and mounting bolt, and Figure 20 is a perspective view of the reinforcing bracket according to the ninth embodiment in a state where it is attached to and fixed to the suspension fitting. The same reference numerals are used for the same parts as in the lip channel steel 14 and suspension fitting 12 of the first embodiment.

[0089] As shown in Figure 20, the structural material for the building is a lip channel steel 14, and the suspension fitting 12 is attached from the lower side portion 18d, which is a protruding part, to the lip portion 20d. A pendulum fitting 32 is fixed to the suspension fitting 12 by a bolt at the mounting portion 32a, and a second long member 10B is suspended and supported from the mounting portion 32a.

[0090] In the ninth embodiment, the reinforcing bracket 76, when used alone, has the tips of a pair of arm-shaped portions 76c, 76c bent upward in an L-shape to form first locking portions 76a, 76a, as shown in Figure 18, and the lower part of the rear end of the arm-shaped portions 76c, 76c is commonly fixed to a flat plate-shaped second locking portion 76b. The second locking portion 76b has an insertion hole 76b1 for inserting a mounting bolt 78a.

[0091] The reinforcing bracket 76, which is attached when the suspension fitting 12 is attached to the lip channel steel 14, comprises an arm-shaped portion 76c provided on the suspension fitting 12 that surrounds the outer surface of the pendulum fitting 32 and extends to the side away from the bolt of the mounting portion 32a; a first locking portion 76a provided at the tip of the arm-shaped portion 76c that locks into the height portion 16 of the lip channel steel 14; and a second locking portion 76b provided at the rear end of the arm-shaped portion 76c that is fixed by mounting bolts 78a and nuts 78b inserted through the insertion holes 22b, 26b and inside the connecting portion 28.

[0092] The reinforcing bracket 76 according to the ninth embodiment is fixed to the suspension bracket 12 together with the suspension bracket 12 by mounting bolts 78a and nuts 78b, and the reinforcing bracket 76 is locked to the lip channel steel 14, thereby increasing the support strength of the suspension bracket 12 to the lip channel steel 14. Since the arm-shaped portion 76c does not interfere with the mounting portion 32a of the pendulum bracket 32, it is highly convenient for reinforcing the suspension bracket 12 after attaching the pendulum bracket 32 ​​and the second long member 10B.

[0093] Although embodiments of the present invention have been described above, these are merely embodiments of the present invention and can be modified and implemented within the scope of the present invention. [Industrial applicability]

[0094] The reinforcing fitting for suspension fittings of the present invention can be used to reinforce suspension fittings attached to various types of structural steel in building materials. [Explanation of symbols]

[0095] 10A First long member 10B Second long member 12 Hanging hardware 14 Lip channel steel 14a aperture 18d Lower edge 18u upper edge 20d Lower lip section 20u upper lip section 22 Support part 22a, 22a Contact plate part 22b, 26b Through holes 24 Tightening bolts 26 Crimping section 28 Connecting part 30 Insertion space 32 Pendulum fittings 32a Mounting part 34 Reinforcement fittings (first embodiment) 34a First locking portion 34b Second locking part 34c Arm-like part 36 Pressing member 40 Angle steel 42 Reinforcement fittings (second embodiment) 44 H-beam 46 Reinforcement fittings (third embodiment) 12A Hanging bracket Hanging bracket (4th embodiment) 34A Reinforcement bracket (Fourth embodiment) 34B Reinforcement bracket (5th embodiment) 50 Elastic body (5th embodiment) 52 Reinforcement fitting (6th embodiment) 54a Bolt 54b Nut 56 First reinforcement (sixth embodiment) 58 Elastic member (8th embodiment) 70 Reinforcement fitting (8th embodiment) 70a Connecting fittings 70a1, 70a1 both sides 70a2 Connecting part 70b Tip plate 70c continuous member 70c1 Nut component 74 Reinforcement fitting (9th embodiment) 74a Beam section 74a Elastic body 74d2 Tip 74h hinge 74s elastic body 74u·74d Upper and lower continuous section 76 Reinforcement fitting (10th embodiment)

Claims

1. In a reinforcing fitting for a suspension fitting used to fix a long member for supporting articles to a protruding part that protrudes horizontally in a cross-sectional view of a structural member made of shaped steel used in buildings, the reinforcing fitting for the suspension fitting increases the support strength of the suspension fitting. The aforementioned suspension fitting comprises a support portion that supports the lower surface of the protruding portion, a crimping portion fitted with a tightening bolt that tightens and fixes the protruding portion from above, and a connecting portion that integrally connects the support portion and the crimping portion, and has an insertion space for inserting building structural material between the support portion and the crimping portion, and exhibits a roughly U-shape in side view. At least one of the following is possible: supporting the first elongated member by inserting it into the aforementioned suspension fitting, or supporting the second elongated member on a pendulum fitting that is swingably attached to the aforementioned suspension fitting. The reinforcing fitting comprises a first locking portion that engages with the building structural material and a second locking portion that does not interfere with the long member and engages with the suspension fitting. A reinforcing fitting for a suspension fitting, characterized in that the reinforcing fitting locks the suspension fitting and the building structural material, thereby increasing the support strength of the suspension fitting with respect to the building structural material.

2. The reinforcing fitting for a suspension fitting according to claim 1 is characterized in that the reinforcing fitting comprises an arm-shaped portion that surrounds the outer surface of the suspension fitting and extends to the tip, a first locking portion provided at the tip of the arm-shaped portion for locking to the building structural material, and a second locking portion provided at the rear end of the arm-shaped portion for locking to the connecting portion.

3. The second locking portion is provided with a pressing member that, by pressing the connecting portion, reinforces the locking force of the first locking portion to the building structural material via the arm-shaped portion. The pressing member comprises a bolt member that screws into the base of the arm-shaped portion and a plate member that abuts against the connecting portion of the suspension fitting, and the screwing in of the bolt member widens the gap between the base of the arm-shaped portion and the plate member, thereby increasing the force with which the first locking portion at the tip of the arm-shaped portion abuts against the building structural material, as described in claim 2.

4. The aforementioned structural material for construction is a lip channel steel having a height portion that runs vertically in cross-section, upper and lower side portions that extend from above and below the height portion toward the opening end, and upper and lower lip portions that protrude opposite each other from the upper and lower side portions at the opening end, and the aforementioned suspension fitting is attached from the lower side portion which is the protruding portion to the lip portion. The aforementioned reinforcing bracket is The first locking portion locks into the inside of the lip portion of the lip channel steel, The reinforcing fitting for a suspension fitting according to claim 2, characterized in that a pressing member is provided in the second locking portion, and by pressing the connecting portion with the pressing member, the locking force of the first locking portion toward the inside of the lip portion is reinforced via the arm-shaped portion, thereby increasing the support strength of the suspension fitting toward the lip channel steel.

5. The aforementioned structural material for construction is an angle steel, which in cross-section consists of a first vertical side and a second horizontally projecting side. The aforementioned suspension fitting is attached to the second side portion which is the protruding part. The aforementioned reinforcing bracket is The first locking portion extends beyond the second side of the angle steel and locks from the top to the first side. The reinforcing fitting for a suspension fitting according to claim 2, characterized in that a pressing member is provided in the second locking portion, and by pressing the connecting portion with the pressing member, the locking force of the first locking portion on the first edge portion via the arm-shaped portion is reinforced, thereby increasing the support strength of the suspension fitting to the building structural material.

6. The aforementioned structural material for the building is an H-shaped steel beam with a flange protruding horizontally. The aforementioned suspension fitting is attached to one of the flanges which is the protruding part. The aforementioned reinforcing bracket is The first locking portion locks into the tip portion of the other flange of the H-shaped steel, The reinforcing fitting for a suspension fitting according to claim 2, characterized in that a pressing member is provided in the second locking portion, and by pressing the connecting portion with the pressing member, the locking force of the first locking portion on the tip of the other flange via the arm-shaped portion is reinforced, thereby increasing the support strength of the suspension fitting to the building structural material.

7. The reinforcing fitting for a suspension fitting according to claim 3, characterized in that an elastic body is provided between the base of the arm-shaped portion and the plate member, and the elastic body is used to widen the distance between the base of the arm-shaped portion and the plate member.

8. The aforementioned structural material for construction is a lip channel steel having a height portion that runs vertically in cross-sectional view, upper and lower side portions that extend from above and below the height portion toward the opening end, and upper and lower lip portions that protrude opposite each other from the upper and lower side portions at the opening end, and the aforementioned suspension fitting is attached from the lower side portion which is the protruding portion to the lower lip portion, The aforementioned reinforcing bracket is The first locking portion locks into the inside of the lower lip portion of the lip channel steel, The second locking portion has a contact end surface formed for contacting the connecting portion, and is provided with a first insertion hole for inserting a bolt in the vertical direction. Furthermore, a first reinforcing member is provided that engages with the lip portion on the lip channel steel, The first reinforcing member is A base end is provided with a second insertion hole through which a bolt is inserted in the vertical direction, An arm-shaped portion extending from the base end to the lip channel steel, The tip of the arm-shaped portion is provided with a third locking portion that engages with the inside of the lip portion on the lip channel steel, The reinforcing fitting for a suspension fitting according to claim 2, characterized in that the first locking portion of the reinforcing fitting is locked to the inside of the lower lip portion, the abutting end surface is brought into contact with the connecting portion, and the third locking portion of the first reinforcing body is locked to the inside of the upper lip portion, and nuts are screwed onto bolts inserted through the first and second insertion holes, thereby fastening the reinforcing fitting and the first reinforcing body together with the bolts and nuts to increase the support strength of the suspension fitting to the lip channel steel.

9. The aforementioned structural material for the building is an H-shaped steel beam with a flange protruding horizontally. The aforementioned suspension fitting is attached to one of the flanges which is the protruding part. The reinforcing fitting comprises a connecting fitting that is U-shaped in plan view, having both side parts attached to the support part and surrounding the left and right outer surfaces of the support part, and a connecting part with screw holes formed therein that connects the two side parts, a tip plate that engages with the other flange, and a continuous member with a full thread connecting the connecting fitting and the tip plate. The reinforcing fitting for a suspension fitting according to claim 1, characterized in that the reinforcing fitting is engaged with the suspension fitting and the H-shaped steel of the building structural material to increase the support strength of the suspension fitting with respect to the building structural material.

10. The aforementioned structural material for construction is a lip channel steel having a height portion that runs vertically in cross-sectional view, upper and lower side portions that extend from above and below the height portion toward the opening end, and a lip portion that protrudes opposite to the upper and lower side portions at the opening end, and the aforementioned hanging fitting is attached from the lower side portion which is the protruding portion to the lip portion. The reinforcing fitting comprises upper and lower continuous parts extending from above and below to the height portion of the lip channel steel, opposite the insertion space of the connecting part of the suspension fitting, and an elastic body that hinges the base ends of the upper and lower continuous parts together and biases the tips of the upper and lower continuous parts in a closing direction. The reinforcing fitting for a suspension fitting according to claim 2 is characterized in that the beam portion adjacent to the base end abuts against the connecting portion and the tip of the continuous portion engages with the height portion, thereby increasing the support strength of the suspension fitting to the building structural material.

11. The aforementioned structural material for construction is a lip channel steel having a height portion that runs vertically in cross-sectional view, upper and lower side portions that extend from above and below the height portion toward the opening end, and a lip portion that protrudes opposite to the upper and lower side portions at the opening end, and the aforementioned hanging fitting is attached from the lower side portion which is the protruding portion to the lip portion. The reinforcing bracket is provided on the suspension fitting and surrounds the outer surface of the pendulum fitting, and includes an arm-shaped portion whose tip extends downward, avoiding the mounting bolts; a first locking portion provided at the tip of the arm-shaped portion and engaging with the height portion of the lip channel steel; and a second locking portion provided at the rear end of the arm-shaped portion and for inserting and fixing the first elongated member which is inserted and fixed through the insertion hole and the connecting portion. The reinforcing fitting for a suspension fitting according to claim 1, characterized in that the reinforcing fitting is secured to the suspension fitting and the building structural material, thereby increasing the support strength of the suspension fitting with respect to the building structural material.

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