Suspension bolt mounting tool and suspension bolt mounting structure

Abstract

To provide a suspension bolt mounting tool and a suspension bolt mounting structure capable of improving the buckling strength of a suspension bolt.SOLUTION: A suspension bolt mounting tool for mounting a suspension bolt 10 to a suspension receiver 100 having a lower flange portion 120 comprises: hook portions 210, 310 hooked onto the lower flange portion 120; contact portions 220, 320 connected to the hook portions 210, 310 and at least partially abutting onto a lower surface of the lower flange portion 120; and fixing portions 230, 330 provided on the contact portions 220, 320 and capable of fixing an upper end portion of the suspension bolt 10.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a technique for a hanger bolt mounting tool and a hanger bolt mounting structure for mounting a hanger bolt to a hanger support member. [Background technology]

[0002] Conventionally, techniques for a hanger bolt mounting tool and a hanger bolt mounting structure for mounting a hanger bolt to a hanger support member have been publicly known, as described in Patent Document 1, for example.

[0003] Patent Document 1 describes a ceiling structure (suspension bolt mounting structure) in which suspension bolts for suspending ceiling surface materials and the like are suspended from C-shaped steel (suspension support members) that constitute part of the building frame. In this suspension bolt mounting structure, a suspension bolt mounting fixture is fixed to the C-shaped steel. The suspension bolt is then fixed to the suspension bolt mounting fixture by being screwed into a plate piece located at the lower end of the suspension bolt mounting fixture. In this way, the suspension bolt is mounted to the C-shaped steel via the suspension bolt mounting fixture.

[0004] In a suspension bolt mounting structure installed outdoors, such as on a soffit, wind pressure may act on the suspension bolt from below. In this case, the suspension bolt, which is screwed into the plate of the suspension bolt mounting fixture, may easily buckle because its upper end is free to rotate. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Utility Model Registration No. 3204309 Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention has been made in consideration of the above-mentioned circumstances, and the problem to be solved is to provide a suspension bolt mounting device and a suspension bolt mounting structure that can improve the buckling resistance of suspension bolts. [Means for solving the problem]

[0007] The problem to be solved by the present invention is as described above, and the means for solving this problem will now be described.

[0008] That is, in claim 1, the device is a hanging bolt mounting device for attaching a hanging bolt to a hanging support member having a flange portion, and comprises a hooking portion that is hooked onto the flange portion, a contact portion that is connected to the hooking portion and at least a portion of which contacts the underside of the flange portion, and a fixing portion that is provided on the contact portion and is configured to be able to fix the upper end of the hanging bolt.

[0009] In claim 2, the fixing portion is formed so as to extend downward from the lower surface of the abutting portion and includes a high nut member in the shape of a high nut that is screwed onto the suspension bolt.

[0010] In claim 3, the upper surface of the high nut member is joined to the lower surface of the abutting portion by welding.

[0011] In claim 4, the abutment portion includes a first portion that abuts against the underside of the flange portion and a second portion that is connected to the first portion and is recessed downward to provide a space between the first portion and the underside of the flange portion, the fixing portion includes a bolt member having a head that is positioned in the space and a threaded portion that protrudes downward from the head through the second portion, and the high nut member is screwed onto the threaded portion from above.

[0012] In claim 5, the second portion has a bottom portion on which the head portion is placed and a side wall portion rising from the bottom portion, and the head portion is configured to be engageable with the side wall portion.

[0013] In claim 6, the abutment portion has a plurality of hole portions for fastening the abutment portion to the flange portion, and the plurality of hole portions are formed at positions along the longitudinal direction of the hanging support material where the high nut member is sandwiched therebetween.

[0014] Claim 7 provides a hanging bolt mounting structure comprising a hanging bolt mounting fixture for mounting a hanging bolt to a hanging support material, wherein the hanging support material has upper and lower flange portions that form an opening, and a web that connects the upper and lower flange portions to each other on the side opposite the opening, and the hanging bolt mounting fixture comprises a hook portion that is hooked onto the lower flange portion, a contact portion that is connected to the hook portion and is formed to extend from the hook portion toward the web, at least a portion of which contacts the underside of the lower flange portion, and a fixing portion that is provided on the abutment portion and is configured to be able to fix the upper end of the hanging bolt.

[0015] In claim 8, the fixing portion is formed to extend downward from the underside of the abutment portion and includes a high nut-shaped high nut member that is screwed onto the hanging bolt, and the high nut member is formed to be positioned on the web side of the opening side and the web side of the hanging support material relative to the lower flange portion. [Effects of the Invention]

[0016] The present invention has the following effects.

[0017] In the present invention, the buckling strength of the suspension bolt can be improved. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a schematic perspective view showing a ceiling structure (hanging bolt mounting structure) having a hanging bolt mounting fixture according to a first embodiment of the present invention. [Figure 2] FIG. 2 is a bottom perspective view showing the suspension bolt mounting structure according to the first embodiment. [Figure 3]1A is a front view showing the suspension bolt fixture according to the first embodiment, and FIG. 1B is a plan view showing the suspension bolt fixture according to the first embodiment. [Figure 4] FIG. [Figure 5] 10A is a front view showing a suspension bolt fixture according to a second embodiment, and FIG. 10B is a plan view showing the suspension bolt fixture according to the second embodiment. [Figure 6] 1A is a side view showing the suspension bolt mounting structure, and FIG. 1B is a partial cross-sectional side view showing the suspension bolt mounting structure. [Figure 7] 10A is a front view showing another example of the hanger bolt fixture according to the second embodiment, and FIG.

[0019] In the following description, the up-down direction, left-right direction, and front-rear direction are defined according to the arrows shown in the drawings.

[0020] Hereinafter, a ceiling structure 1 having a suspension bolt fixture 200 according to a first embodiment of the present invention will be described first with reference to FIG.

[0021] The ceiling structure 1 shown in Figure 1 is a ceiling structure in the eaves of a steel-framed building. For convenience, Figure 1 shows only a portion of the entire ceiling structure of the building. The following will explain the ceiling structure 1 shown in Figure 1 (a portion of the entire ceiling structure). The ceiling structure 1 comprises suspension bolts 10, hangers 20, joist supports 30, joists 40, ceiling surface materials 50, braces 60, first reinforcing brackets 70, second reinforcing brackets 80, suspension support materials 100, and suspension bolt fixtures 200.

[0022] The suspension bolt 10 is suspended from the building frame. More specifically, the suspension bolt 10 is attached to a suspension support member 100, which constitutes part of the frame, using a suspension bolt fixture 200. Details of the suspension support member 100 and the suspension bolt fixture 200 will be described later. A plurality of suspension bolts 10 are provided. Three suspension bolts 10 are shown in FIG. 1.

[0023] The hanger 20 supports the soffit support 30, which will be described later. The hanger 20 is attached to the lower end of each suspension bolt 10.

[0024] The siding support 30 supports the siding 40, which will be described later. The siding support 30 is formed in an elongated shape and is arranged with its longitudinal direction facing the front-to-rear direction. The siding support 30 is supported by the hanger 20. In this way, the siding support 30 is suspended from the hanging support material 100 via the hanger 20 and the hanging bolt 10. Multiple siding supporters 30 are provided. Three siding supporters 30 are shown in Figure 1.

[0025] The siding 40 supports the ceiling surface material 50, which will be described later. The siding 40 is formed in an elongated shape and is arranged with its longitudinal direction facing the left-right direction. The siding 40 is supported by the siding support 30 using clip members 41. A plurality of sidings 40 are provided. Three sidings 40 are shown in FIG. 1.

[0026] The ceiling surface material 50 constitutes the ceiling surface. The ceiling surface material 50 is formed, for example, from a plate-shaped gypsum board. The ceiling surface material 50 is placed with the plate surface facing up and down. The ceiling surface material 50 is fixed to the underside of the rough joist 40 using screws or the like.

[0027] The brace 60 is installed between the building frame and the joist support 30. The brace 60 is formed in an elongated shape and is arranged with its longitudinal direction tilted relative to the vertical direction. The brace 60 is installed between the building frame and brace reinforcement members 62 that extend in the left-right direction and are fixed to the top surfaces of the three joist supporters 30. Figure 1 shows a pair of braces 60 installed side by side on the left and right.

[0028] The first reinforcing bracket 70 is fixed to the lower end of each of the left brace 60 and the right brace 60. The first reinforcing bracket 70 is formed in a rectangular plate shape when viewed from the front, with the plate surface oriented in the front-to-rear direction and the longitudinal direction oriented in the left-to-right direction.

[0029] The second reinforcing bracket 80 is fixed to the joist 40 and the ceiling surface material 50. The second reinforcing bracket 80 is formed in a roughly L-shape when viewed from the side. The front surface of the second reinforcing bracket 80 is fixed to the first reinforcing bracket 70, and is also fixed to the brace reinforcement material 62 with screws or the like. The bottom surface of the second reinforcing bracket 80 is fixed to the ceiling surface material 50 with screws or the like.

[0030] The configuration of the hanging support member 100 will be described in detail below with reference to FIGS.

[0031] The hanging member 100 forms part of the building's framework. A hanging bolt fixture 200, which will be described later, is fixed to the hanging member 100. In this embodiment, the hanging member 100 is made of a long C-shaped steel beam. The hanging member 100 shown in FIGS. 1 and 2 is positioned with its open side (opening 140, which will be described later) facing forward and its longitudinal direction facing left and right. As shown in FIG. 2, the hanging member 100 has an upper flange portion 110 (upper flange 111 and upper lip 112), a lower flange portion 120 (lower flange 121 and lower lip 122), a web 130, and an opening 140.

[0032] The upper flange portion 110 constitutes the upper end portion of the hanging support material 100. The lower flange portion 120 constitutes the lower end portion of the hanging support material 100. The web 130 constitutes the rear end portion of the hanging support material 100. The web 130 is formed to extend in the left-right direction when viewed from the front, and is configured to connect the rear end portion of the upper flange portion 110 and the rear end portion of the lower flange portion 120.

[0033] The upper flange portion 110 includes an upper flange 111 and an upper lip 112. The upper flange 111 is the main structural element of the upper flange portion 110 and is formed in a flat plate shape. The upper lip 112 constitutes the front end portion of the upper flange portion 110. The upper lip 112 is formed to extend downward from the front end portion of the upper flange 111.

[0034] The lower flange portion 120 includes a lower flange 121 and a lower lip 122. The lower flange 121 is the main structural element of the lower flange portion 120 and is formed in a flat plate shape. The lower lip 122 constitutes the front end portion of the lower flange portion 120. The lower lip 122 is formed to extend upward from the front end portion of the lower flange 121.

[0035] The opening 140 is formed in the vertical center of the front end of the hanging support member 100. The opening 140 is defined by an upper lip 112 of the upper flange portion 110 and a lower lip 122 of the lower flange portion 120.

[0036] The configuration of the suspension bolt fixture 200 according to the first embodiment will be described in detail below with reference to FIGS.

[0037] The suspension bolt fixture 200 is used to attach the suspension bolt 10 to the suspension receiving member 100. The suspension bolt fixture 200 is mainly formed by appropriately bending a single sheet of plate material (except for the fixing portion 230 described below). The suspension bolt fixture 200 comprises a hook portion 210, a contact portion 220, and a fixing portion 230.

[0038] The hook portion 210 is a portion that is hooked onto the lower flange portion 120 of the hanging receiving member 100. The hook portion 210 is formed so as to be located at the front end portion of the hanging bolt mounting tool 200. The hook portion 210 is equipped with a hook plate portion 211 and a hook claw portion 212.

[0039] The hook plate portion 211 is the main structural element of the hook portion 210. The hook plate portion 211 is formed in a generally plate-like shape with the plate surface facing in the front-to-rear direction. The hook plate portion 211 is formed in a generally U-shape when viewed from the front. The vertical width of the hook plate portion 211 is formed to be generally the same as the vertical width of the lower lip 122 (to which the hanging bolt mounting tool 200 is attached).

[0040] The hooking claw portion 212 is a portion that is hooked onto the lower lip 122 of the lower flange portion 120. The hooking claw portion 212 is formed in a claw shape that is bent rearward and downward, starting from the upper end portion of the hooking plate portion 211. Two hooking claw portions 212 are provided, and are connected to the left and right upper end portions of the hooking plate portion 211, respectively.

[0041] The abutment portion 220 is the portion that abuts against the underside of the lower flange portion 120 of the hanging receiving material 100. The abutment portion 220 is formed so as to be located at the lower end of the hanging bolt mounting fixture 200. The abutment portion 220 is formed in a generally plate-like shape with the plate surface facing in the vertical direction. The front end of the abutment portion 220 is connected to the lower end of the hook plate portion 211. The abutment portion 220 is formed so as to extend rearward from the hook plate portion 211 (from the opening 140 side to the web 130 side, when the hanging receiving material 100 is used as the reference).

[0042] The front-to-rear width of abutment portion 220 is formed smaller than the front-to-rear width of lower flange 121 of hanging member 100. The rear end of abutment portion 220 is formed so as to be located rearward of the center in the front-to-rear direction of lower flange 121 of hanging member 100. Note that this is not limited to the configuration described above, and for example, the front-to-rear width of abutment portion 220 may be formed so as to be the same as the front-to-rear width of lower flange 121 of hanging member 100. The rear end of abutment portion 220 may also be formed so as to be located in the center in the front-to-rear direction of lower flange 121 of hanging member 100, or so as to be located forward of the center. Abutment portion 220 is equipped with a main hole 221 and a plurality of screw holes 222.

[0043] The main hole 221 is a portion that communicates with the high nut member 231, which will be described later. The main hole 221 passes through the abutment portion 220 in the up-down direction and is formed in a substantially circular shape in a plan view. The main hole 221 is formed so as to be located in the center of the abutment portion 220 in the left-right direction in a plan view and in the vicinity of the rear end portion of the abutment portion 220. The inner diameter of the main hole 221 is formed to be substantially the same as the inner diameter of the high nut member 231, which will be described later.

[0044] The multiple screw holes 222 are used to attach the abutment portion 220 to the lower flange 121 of the hanging receiving material 100. In this embodiment, four screw holes 222 are formed. The four screw holes 222 are formed at appropriate intervals in the front-to-rear and left-to-right directions when viewed from the bottom. Of the four screw holes 222, the two screw holes 222 formed on the rear side are formed so that they are lined up in the left-to-right direction (the longitudinal direction of the hanging receiving material 100 when the hanging receiving material 100 is used as the reference), with the main hole 221 sandwiched between them.

[0045] The fixing portion 230 is a portion that fixes the upper end portion of the suspension bolt 10. The fixing portion 230 includes a high nut member 231 and a welded portion 232.

[0046] The high nut member 231 is a member formed in the shape of a high nut with a longer overall length than a normal hexagonal nut. A screw hole (not shown) is formed inside the high nut member 231 in the longitudinal direction. The high nut member 231 is formed below the abutment portion 220. The upper surface of the high nut member 231 abuts against the lower surface of the abutment portion 220 (the peripheral portion of the main hole 221). That is, the high nut member 231 is located in the left-right center of the abutment portion 220 in a plan view, near the rear end of the abutment portion 220, and is formed to extend downward. The high nut member 231 is located so as to overlap the main hole 221 in the vertical direction, and the two are in communication with each other.

[0047] The welded portion 232 is a portion where the upper surface of the high nut member 231 is joined to the lower surface of the abutment portion 220 by welding. The welded portion 232 is formed so as to cover the abutment portion between the upper surface of the high nut member 231 and the lower surface of the abutment portion 220 from the outside. The welded portion 232 is formed by a fillet created by welding. In this way, the upper surface of the high nut member 231 is joined to the lower surface of the abutment portion 220 by the welded portion 232, so that the high nut member 231 and the abutment portion 220 are fixed to each other, and it is possible to prevent the high nut member 231 from freely rotating relative to the abutment portion 220. Note that various welding methods can be used as the welding method.

[0048] Below, using Figures 2 and 4, we will explain a method of attaching a hanging bolt 10 to a hanging support material 100 using a hanging bolt attachment device 200, and a hanging bolt attachment structure 1A of the ceiling structure 1 in which a hanging bolt 10 is attached to the hanging support material 100 using a hanging bolt attachment device 200.

[0049] The suspension bolt fixture 200 is attached to the hanging receiving member 100 by an operator. Specifically, first, the two hooking claws 212 of the suspension bolt fixture 200 are hooked onto the lower lip 122 of the hanging receiving member 100 from above. This prevents the suspension bolt fixture 200 from falling off the hanging receiving member 100, allowing the operator to use both hands to perform the installation work (without having to support and hold the suspension bolt fixture 200).

[0050] Next, the abutment portion 220 of the suspension bolt fixture 200 is screwed to the hanging receiving material 100. Specifically, screws S1 are screwed into the four screw holes 222 of the abutment portion 220. Furthermore, (for abutment portions 220 that do not have screw holes formed therein) screw S2 is screwed from below in the left-right center of the abutment portion 220 and near the front end portion of the abutment portion 220. In this way, the abutment portion 220 is fastened to the lower flange 121 of the hanging receiving material 100, and the suspension bolt fixture 200 is attached to the hanging receiving material 100. Note that screw holes for screws S2 may be formed in the abutment portion 220 before the attachment work.

[0051] Next, the suspension bolt 10 is fixed to the suspension bolt fixture 200. Specifically, the suspension bolt 10 is screwed from below into the threaded hole of the high nut member 231 of the suspension bolt fixture 200. When the suspension bolt 10 is screwed into the high nut member 231 in this way, the upper end of the suspension bolt 10 is fixed to the fixing portion 230 of the suspension bolt fixture 200, and thus the suspension bolt 10 is fixed to the suspension bolt fixture 200. When the installation work is completed in this way, the suspension bolt installation structure 1A is formed.

[0052] In the suspension bolt mounting structure 1A formed in this manner, the upper end of the suspension bolt 10 (more specifically, the portion having a predetermined width from the upper surface to the lower surface) is restrained in the threaded hole of the high nut member 231. This causes the upper end of the suspension bolt 10 to be fixed to the suspension receiving member 100 via the suspension bolt mounting tool 200. In other words, the upper end of the suspension bolt 10 can be restrained as a fixed end, preventing the suspension bolt 10 from freely rotating relative to the suspension receiving member 100. This improves the buckling strength of the suspension bolt 10. In other words, for example, when the suspension bolt mounting structure 1A is formed outdoors, such as on an eaves soffit as in this embodiment, the suspension bolt 10 can be prevented from buckling even if a compressive force acts on the suspension bolt from below due to wind pressure or the like.

[0053] Furthermore, in the hanging bolt mounting structure 1A, the high nut member 231 (more specifically, the axial position of the high nut member 231) is formed so as to be located rearward of the center of the hanging member 100 in the front-to-rear direction. In other words, the high nut member 231 is formed so as to be located on the web 130 side of the lower flange portion 120 of the hanging member 100, between the opening 140 side and the web 130 side, and is positioned in the vicinity of the web 130. This makes it possible to suppress deformation of the opening 140 side of the hanging member 100, for example, when a load acts on the hanging bolt 10 in the vertical direction. In this way, the buckling resistance of the hanging bolt 10 can be further improved.

[0054] Furthermore, in the hanging bolt mounting structure 1A, of the four screws S1 that are screwed into the four screw holes 222 of the abutting portion 220, the two screws S1 located on the rear side are formed in a position that sandwiches the high nut member 231 in the left-right direction (the longitudinal direction of the hanging receiving material 100). This makes it possible to effectively prevent the abutting portion 220 from deforming so as to move away from the lower flange 121 of the hanging receiving material 100, even when a downward load is applied to the hanging bolt 10.

[0055] Furthermore, in this embodiment, the screw S2 is screwed in from below near the front end of the contact portion 220 (the lower lip 122 of the hanging member 100). This allows the contact portion 220 of the hanging bolt fixture 200 to be fastened to the lower flange 121 of the hanging member 100 at multiple locations spaced at appropriate intervals in the front-to-rear direction. This allows the contact portion 220 to be fastened to the lower flange 121 in a balanced manner in the front-to-rear direction (between the portion that is more likely to receive the load from the hanging bolt 10 and the portion that is less likely to receive the load). This effectively prevents the hanging bolt fixture 200 from deforming, and further improves the buckling resistance of the hanging bolt 10.

[0056] The configuration of the suspension bolt fixture 300 according to the second embodiment will be described in detail below with reference to FIGS.

[0057] In the following, among the configurations of the suspension bolt fixture 300, the configurations similar to those of the suspension bolt fixture 200 of the first embodiment will be given the same symbols and explanations will be omitted as appropriate, and the different configurations will be explained in detail.

[0058] The suspension bolt fixture 300 includes a hook portion 310 , a contact portion 320 , and a fixing portion 330 .

[0059] The hook portion 310 is formed in substantially the same manner as the hook portion 210 according to the first embodiment. Unlike the hook portion 210 according to the first embodiment, the hook portion 310 has a hook plate portion 211 that is not substantially U-shaped when viewed from the front, but is formed in a substantially rectangular shape separated into left and right halves.

[0060] The abutting portion 320 is a portion that at least a portion thereof abuts against the lower surface of the lower flange portion 120 of the hanging receiver 100. The abutting portion 320 includes a first portion 321 and a second portion 322.

[0061] The first portion 321 of the contact portion 320 is formed in a generally plate-like shape with the plate surface facing in the vertical direction. The first portion 321 is formed in a generally rectangular shape separated into left and right halves.

[0062] The second portion 322 of the abutment portion 320 is formed between the left and right separated first portion 321. The second portion 322 is formed in a concave shape recessed downward. Specifically, the second portion 322 includes a bottom portion 323 and sidewall portions 324. The bottom portion 323 is formed to be located at the lower end of the second portion 322. The main hole 221 is formed in the bottom portion 323. The sidewall portions 324 are formed to rise from the left and right ends of the bottom portion 323. The sidewall portions 324 are formed to connect the left and right ends of the bottom portion 323 to the inner left and right ends of the separated first portion 321. In this way, the second portion 322 is formed to provide a space between it and the underside of the lower flange 121 of the hanging support member 100.

[0063] The fixing portion 330 includes a fastener nut member 231 and a bolt 332. In this manner, the fixing portion 330 includes the bolt 332 instead of the welded portion 232 of the fixing portion 230 according to the first embodiment.

[0064] The bolt 332 joins the upper surface of the high nut member 231 to the lower surface of the abutment portion 220. The bolt 332 has a head 333 and a threaded portion 334 protruding from the head 333. The head 333 of the bolt 332 is disposed within the second portion 322 (space) of the abutment portion 320. The head 333 of the bolt 332 is placed on the bottom portion 323 of the second portion 322. The threaded portion 334 of the bolt 332 protrudes downward through the main hole 221 of the bottom portion 323.

[0065] In this manner, with the upper surface of high nut member 231 in contact with the lower surface of abutment portion 220 (bottom portion 323 of second portion 322), threaded portion 334 of bolt 332 is screwed from above into the screw hole of high nut member 231. In this manner, high nut member 231 is formed to extend downward from the lower surface of bottom portion 323 of second portion 322. As a result, the upper surface of high nut member 231 is joined to the lower surface of abutment portion 220, so that high nut member 231 and abutment portion 220 are fixed to each other and it is possible to prevent high nut member 231 from being freely rotatable with respect to abutment portion 220.

[0066] Even with such an attachment structure, the upper end of the hanging bolt 10 can be fixed to a higher degree, and the upper end can be restrained to a higher degree, thereby preventing the hanging bolt 10 from freely rotating relative to the hanging member 100. This improves the buckling strength of the hanging bolt 10, and prevents the hanging bolt 10 from buckling.

[0067] 6(b), a gap is provided between the upper surface of the head 333 of the bolt 332 and the lower surface of the lower flange 121, but the upper surface of the head 333 of the bolt 332 and the lower surface of the lower flange 121 can also be brought into contact with each other to eliminate any gap (metal touch state). This can improve the fixation of the head 333 of the bolt 332.

[0068] Furthermore, the head 333 of the bolt 332 is formed to have a size that allows it to be placed within the second portion 322 (space) of the abutting portion 320. Furthermore, the head 333 of the bolt 332 is configured to be able to engage with the side wall portions 324 of the second portion 322 when placed within the second portion 322 (space) of the abutting portion 320. Specifically, the bolt 332 is formed so that the length of the longest part of the outer diameter of the head 333 is longer than the left-right width of the bottom portion 323 of the second portion 322 (the width between the left and right side wall portions 324). With this configuration, when the bolt 332 attempts to rotate relative to the abutting portion 320 due to, for example, aging, vibration, or the like, the head 333 of the bolt 332 can engage with the left and right side wall portions 324. In this way, unintentional loosening of the bolt 332 can be suppressed, and the hanging bolt mounting structure 1A can be made stronger.

[0069] As described above, the suspension bolt fixtures 200 and 300 according to the embodiments of the present invention are as follows: A hanging bolt fixture (200 / 300) for attaching a hanging bolt (10) to a hanging member (100) having a lower flange portion (120), hook portions 210 and 310 that are hooked onto the lower flange portion 120; abutting portions 220 / 320 connected to the hook portions 210 / 310, at least a portion of which abuts against the lower surface of the lower flange portion 120; fixing portions 230 and 330 provided on the abutting portions 220 and 320 and configured to be able to fix the upper end portions of the suspension bolts 10; It is equipped with the following.

[0070] Moreover, the suspension bolt mounting structure 1A according to the embodiment of the present invention is A suspension bolt mounting structure including a suspension bolt mounting fixture (200 / 300) for mounting a suspension bolt (10) to a suspension receiving member (100), The hanging support material 100 is The casing has upper and lower flange portions that form an opening 140, and a web 130 that connects the upper and lower flange portions to each other on the side opposite the opening 140, The hanging bolt fixtures 200 and 300 are Hook portions 210 and 310 that can be hooked onto the lower flange portion 120; abutment portions (220 / 320) connected to the hook portions (210 / 310) and extending from the hook portions (210 / 310) toward the web (130), at least a portion of which abuts against the lower surface of the lower flange portion (120); fixing portions 230 and 330 provided on the abutting portions 220 and 320 and configured to be able to fix the upper end portions of the suspension bolts 10; It is equipped with the following.

[0071] With this configuration, the buckling strength of the suspension bolt 10 can be improved. Furthermore, since the suspension bolt fixtures 200 and 300 according to this embodiment are formed as a single component, there is no need to attach multiple components at the work site, for example, and workability can be improved.

[0072] Also, in the hanging bolt fixtures 200 and 300, The fixing portions 230 and 330 are The abutting portions 220 and 320 are formed so as to extend downward from their lower surfaces, and include a high nut-shaped member 231 that is screwed onto the suspension bolt 10 .

[0073] This configuration allows the upper end of the suspension bolt 10 (the portion having a predetermined width from the upper surface to the lower surface) to be restrained, thereby increasing the degree of fixation with a relatively simple configuration. In this way, the buckling resistance of the suspension bolt 10 can be effectively improved.

[0074] In addition, in the hanging bolt fixture 200, The high nut member 231 is The upper surface of the high nut member 231 is joined to the lower surface of the abutting portion 220 by welding.

[0075] With this configuration, the upper end of the suspension bolt 10 can be fixed in a strong configuration.

[0076] In addition, in the hanging bolt fixture 300, The contact portion 220 is a first portion 321 that abuts against the lower surface of the lower flange portion 120; a second portion 322 connected to the first portion 321 and recessed downward to provide a space between the second portion 322 and the lower surface of the lower flange portion 120; Including, The fixing portion 230 is a bolt member having a head portion (333) disposed within the space and a threaded portion (334) protruding downward from the head portion (333) through the second portion (322); The high nut member 231 is It is screwed onto the threaded portion 334 from above.

[0077] With this configuration, the upper end of the suspension bolt 10 can be fixed with a relatively simple configuration.

[0078] In addition, in the hanging bolt fixture 300, The second portion 322 is The head portion 333 is placed on a bottom portion 323, and a side wall portion 324 is raised from the bottom portion 323. The head 333 is It is configured to be engageable with the side wall portion 324 .

[0079] With this configuration, it is possible to prevent the bolt 332 from unintentionally loosening, and it is possible to make the suspension bolt mounting structure 1A strong.

[0080] Also, in the hanging bolt fixtures 200 and 300, The contact portions 220 and 320 are a plurality of screw holes 222 (holes) for fastening the abutment portions 220 / 320 to the lower flange portion 120; The plurality of screw holes 222 (holes) are It is formed in a position along the longitudinal direction of the hanging support member 100 so as to sandwich the high nut member 231 therebetween.

[0081] With this configuration, the buckling strength of the suspension bolt 10 can be effectively improved.

[0082] In addition, in the hanging bolt mounting structure 1A according to the embodiment of the present invention, The fixing portions 230 and 330 are a high nut member 231 formed to extend downward from the lower surface of the abutting portion 220 / 330 and to be screwed onto the suspension bolt 10; The high nut member 231 is It is formed so as to be positioned on the web 130 side of the opening 140 side of the hanging support material 100 and the web 130 side with respect to the lower flange portion 120 on the lower side.

[0083] With this configuration, the buckling strength of the suspension bolt 10 can be effectively improved.

[0084] Although there is no particular regulation, it is desirable that the suspension bolt 10 be screwed as far as possible into the innermost (upper) side of the high nut member 231.

[0085] Although the embodiment of the present invention has been described above, the present invention is not limited to the above configuration, and various modifications are possible within the scope of the invention described in the claims.

[0086] For example, in this embodiment, the fixing portion includes a high nut member, but this is not limited thereto. That is, the fixing portion may have a configuration capable of fixing the upper end of the hanging bolt 10. The configurations of the fixing portion 230 according to the first embodiment and the fixing portion 330 according to the second embodiment may also be combined. Specifically, the contact portion between the high nut member 231 of the fixing portion 330 according to the second embodiment and the lower surface of the contact portion 320 may be formed so as to be covered from the outside by the welded portion 232 according to the first embodiment. This more firmly prevents the high nut member 231 from freely rotating relative to the contact portion 320, thereby more effectively preventing the hanging bolt 10 from buckling.

[0087] Furthermore, the hanging support member 100 is not limited to (one) C-shaped steel. Specifically, the hanging support member 100 may be anything that has a flange portion, and for example, two C-shaped steels joined together at their web sides may also be used.

[0088] In addition, in this embodiment, the ceiling structure 1 is equipped with the brace 60, the brace reinforcement member 62, the first reinforcing metal fitting 70, and the second reinforcing metal fitting 80, but is not limited to this. In other words, the ceiling structure 1 does not have to include some or all of these components.

[0089] 7(a) and 7(b) show another example of the suspension bolt fixture 300 according to the second embodiment (suspension bolt fixture 300A). Instead of being located between the first portions 321 separated laterally (see FIG. 5), the second portion 322 of the abutting portion 320 may be located between the first portions 321 separated front-to-rear. This allows the second portion 322 to extend left-to-right (i.e., along the longitudinal direction of the lower flange 121 of the suspension receiving member 100) rather than in the front-to-rear direction. This allows two sets of high nut members 231 and bolts 332 (and thus two suspension bolts 10) to be arranged side-by-side with a narrow gap between them, further improving the buckling strength of the suspension bolts 10. Furthermore, since the suspension bolt fixture 300A can be constructed using a single fixture, workability can be improved. Instead of two sets of high nut members 231 and bolts 332, three or more sets of high nut members 231 and bolts 332 may be provided.

[0090] 7 shows another example (hanger bolt fixture 300A) of the hanger bolt fixture 300 according to the second embodiment, but even in another example (not shown) of the hanger bolt fixture 200 according to the first embodiment, it is possible to arrange multiple sets of high nut members 231 and welded portions 232 for one hanger bolt fixture 200 so that they are aligned in a direction along the longitudinal direction of the lower flange 121 of the hanger receiving member 100. This can further improve the buckling resistance of the hanger bolt 10, and can also improve workability. [Explanation of symbols]

[0091] 10 Hanging bolt 100 Hanging material 120 Lower flange 210 Hook 220 Contact part 230 Fixed part

Claims

1. A hanging bolt attachment for attaching a hanging bolt to a hanging member having a flange portion, a hook portion that is hooked onto the flange portion; a contact portion connected to the hook portion and having at least a portion contacting the lower surface of the flange portion; a fixing portion provided on the abutment portion and configured to be able to fix an upper end portion of the suspension bolt; Equipped with Hanging bolt mounting fixture.

2. The fixing portion is A high nut member formed to extend downward from the lower surface of the abutment portion and to be screwed onto the hanging bolt is included. The hanger bolt fixture of claim 1 .

3. The high nut member is The upper surface of the high nut member is joined to the lower surface of the abutment portion by welding. The hanger bolt fixture according to claim 2.

4. The abutment portion is a first portion that abuts against a lower surface of the flange portion; a second portion connected to the first portion and recessed downward to provide a space between the second portion and a lower surface of the flange portion; Including, The fixing portion is a bolt member having a head disposed within the space and a threaded portion protruding downward from the head through the second portion, The high nut member is The screw portion is screwed from above. The hanger bolt fixture according to claim 2.

5. The second portion is The head rests on a bottom portion, and a side wall portion rises from the bottom portion. The head portion configured to be engageable with the side wall portion; The hanger bolt fixture according to claim 4.

6. The abutment portion is a plurality of holes for fastening the abutment portion to the flange portion; The plurality of holes are The high nut member is formed at a position along the longitudinal direction of the hanging support member so as to sandwich the high nut member therebetween. The hanger bolt fixture according to claim 2.

7. A suspension bolt mounting structure having a suspension bolt mounting tool for mounting a suspension bolt to a suspension receiving material, The hanging support material is The housing has upper and lower flange portions that form an opening, and a web that connects the upper and lower flange portions to each other on the side opposite the opening, The hanging bolt fixture is a hook portion that is hooked onto the lower flange portion; a contact portion that is connected to the hook portion and extends from the hook portion toward the web, and at least a portion of which contacts the lower surface of the lower flange portion; a fixing portion provided on the abutment portion and configured to be able to fix an upper end portion of the suspension bolt; Equipped with Hanging bolt mounting structure.

8. The fixing portion is a high nut member formed to extend downward from the lower surface of the abutment portion and to be screwed onto the suspension bolt; The high nut member is The lower flange portion is formed so as to be located on the web side of the opening side and the web side of the hanging support material. The suspension bolt mounting structure according to claim 7.

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