Support bracket for suspension bolts

Abstract

To improve the work efficiency of supporting the support structure with respect to the suspension bolts. [Solution] The suspension bolt support fitting 1 according to the present disclosure comprises a fastening member body 101 for fastening a channel material 500, a clamping member body 201 for clamping a suspension bolt 400 together with the fastening member body, a spring portion 204 for clamping the suspension bolt and pressing the clamping member body against the fastening member body in order to temporarily fix the suspension bolt support fitting to the suspension bolt 400, a first bolt 106 and a plate nut 107 for fastening the channel material to the fastening member body, and a second bolt 208 for clamping the suspension bolt and fastening the clamping member body to the fastening member body in order to fix the suspension bolt support fitting to the suspension bolt.

Description

Technical Field

[0001] The present invention relates to a support fitting for a suspension bolt that supports a channel member or other supported body with respect to the suspension bolt.

Background Art

[0002] Various support fittings for suspension bolts are known for supporting and fixing various steel materials such as channel members at an intermediate position on a fully threaded bolt (suspension bolt) suspended from a ceiling slab or the like (for example, Patent Document 1). In the related art, the suspension bolt is sandwiched between two types of fittings (a locking fitting having a U-shaped cross section and a connecting fitting), and tightened and fixed with a pair of bolts. Then, another bolt is passed through the bolt hole of the connecting fitting, and the steel material is sandwiched and screwed into a plate nut to fix the steel material.

[0003] In the related art, two types of fittings, three bolts, and plate nuts are separately packaged, and it is necessary to assemble them to the suspension bolt while temporarily assembling them at the work site, and the work efficiency is not very high. Of course, it is also possible to temporarily assemble them in advance, but in order to sandwich the suspension bolt between two types of fittings, at least one bolt needs to be removed from the temporarily assembled state, and work for that becomes necessary. Further, even if it is shipped in a temporarily assembled state, it is difficult to avoid a situation where the bolts and plate nuts fall off due to vibration during delivery or the like. In that case, it is not preferable because the troublesome work of picking up and appropriately combining two types of scattered fittings, three bolts, and plate nuts increases.

[0004] In addition, it is necessary to adjust the height of the steel material with respect to the suspension bolt. At that time, it is necessary to finely adjust the height of the fitting while repeating the work of checking the position after temporarily tightening the bolt and loosening and moving the bolt, and the work efficiency is very poor.

[0005] Furthermore, while the suspension bolt is sandwiched between two types of fittings and fastened with a pair of bolts, uneven tightening can cause the fittings to become uneven, potentially leading to a decrease in holding power and other problems. Therefore, it is necessary to tighten the pair of bolts evenly by screwing them in alternately little by little, which was one of the factors that reduced work efficiency.

[0006] Furthermore, attaching steel materials to suspension bolts requires tightening them in three places, and it is desirable to reduce the number of bolt tightening points in order to improve work efficiency.

[0007] Furthermore, while the pair of bolts connecting the two types of fittings were the same size, the other bolts screwed into the plate nuts were of a different size, requiring the user to change sockets or ratchet wrenches. [Prior art documents] [Patent Documents]

[0008] [Patent Document 1] Japanese Patent Application Publication No. 10-185007 [Overview of the project] [Problems that the invention aims to solve]

[0009] The objective is to provide a support fitting for suspension bolts that can streamline the process of supporting a support structure with respect to the suspension bolt. [Means for solving the problem]

[0010] The suspension bolt support fitting according to this embodiment is a member for supporting a channel material with respect to a suspension bolt. The suspension bolt support fitting comprises a fastening member body for fastening the channel material, a clamping member body for clamping the suspension bolt together with the fastening member body, a spring portion for clamping the suspension bolt and pressing the clamping member body against the fastening member body in order to temporarily fasten the suspension bolt support fitting to the suspension bolt, a first bolt and plate nut for fastening the channel material to the fastening member body, and a second bolt for clamping the suspension bolt and fastening the clamping member body to the fastening member body in order to fix the suspension bolt support fitting to the suspension bolt. [Brief explanation of the drawing]

[0011] [Figure 1] This is a perspective view showing a support fitting for a suspension bolt according to the first embodiment. [Figure 2] Figure 1 is an exploded perspective view of the support bracket for the suspension bolt. [Figure 3] Figure 1 is a front view of the support bracket for the suspension bolt. [Figure 4] Figure 1 is a side view of the support bracket for the suspension bolt. [Figure 5] Figure 1 is a plan view of the support bracket for the suspension bolt. [Figure 6] This is a cross-sectional view AA in Figure 3. [Figure 7] This figure shows the process of attaching the support bracket for the suspension bolt shown in Figure 1 to the suspension bolt. [Figure 8] This figure shows the state in which a channel material is attached vertically to the support bracket for the suspension bolt shown in Figure 1. [Figure 9] This figure shows the state in which a channel material is attached laterally to the support bracket for the suspension bolt shown in Figure 1. [Figure 10] This is a perspective view showing a modified example of the support bracket for the suspension bolt shown in Figure 1. [Figure 11] Figure 10 is an exploded perspective view of the support bracket for the suspension bolt. [Figure 12] This is a perspective view showing a support fitting for a suspension bolt according to the second embodiment. [Figure 13]It is an exploded perspective view of the support fitting for the suspension bolt in FIG. 12. [Figure 14] It is a plan view of the support fitting for the suspension bolt in FIG. 12. [Figure 15] It is a perspective view showing the support fitting for the suspension bolt according to the third embodiment. [Figure 16] It is an exploded perspective view of the support fitting for the suspension bolt in FIG. 15. [Figure 17] It is a plan view of the support fitting for the suspension bolt in FIG. 15.

Mode for Carrying Out the Invention

[0012] Hereinafter, the support fitting for the suspension bolt according to the present embodiment will be described with reference to the drawings. In the following description, components having the same function and configuration are denoted by the same reference numerals, and duplicate description will be made only when necessary.

[0013] (First Embodiment) FIGS. 1 to 6 show the support fitting 1 for the suspension bolt according to the first embodiment alone. FIG. 7 shows the process of attaching the support fitting 1 for the suspension bolt to the suspension bolt. FIGS. 8 and 9 show a state in which the channel member 500 having a U-shaped cross section is supported by the support fitting 1 for the suspension bolt at 400. Here, although the channel member 500 having a U-shaped cross section is described as an example of the supported body, it is not limited to the channel member 500, and other steel materials such as L-shaped angles may be used. Further, the support fitting 1 for the suspension bolt is compatible with suspension bolts 400 having various outer diameters that fit into the arc-shaped recess 209 described later.

[0014] The support fitting 1 for the suspension bolt includes a fastening member 100 for fastening the channel member 500 and a clamping member 200 for clamping the suspension bolt 400 between the fastening member 100.

[0015] The fastening member 100 has a fastening member body 101. The fastening member body 101 is made of a steel plate bent into an L-shape in cross-section and consists of a rectangular horizontal plate 102 and a rectangular vertical plate 103. The left, right, and front edges of the horizontal plate 102 are bent vertically downward to serve as retaining plates 104 for preventing rotation of the channel material 500.

[0016] A bolt hole 105 is drilled approximately in the center of the horizontal plate 102. A bolt (first bolt) 106 is inserted through the bolt hole 105 from above and screwed into the threaded hole 108 of the plate nut 107. The plate nut 107 is formed by bending a steel plate into a U-shape in cross-section and is constructed in a groove shape from a bottom plate 109 and a pair of side plates 110. The bottom plate 109 of the plate nut 107 has a rectangular shape, with its width (length of the short side) being shorter than the gap (opening) between the pair of lip pieces 502 of the channel material 500, and its length (length of the long side) being shorter than the inner distance (internal dimension) between the pair of side plates 501 of the channel material 500. This allows the plate nut 107 to be positioned parallel to the channel material 500, enabling it to be inserted into the inside of the channel material 500 through the opening of the lip piece 502 of the channel material 500. It also allows the plate nut 107 to be rotated approximately 90° to sandwich and fasten the lip piece 502 of the channel material 500 between the side plate 110 and the horizontal plate 102 of the plate nut 107.

[0017] The bolt 106 is inserted into the bolt hole 105 of the horizontal plate 102 and shipped in a loosely screwed-in state onto the plate nut 107. If left as is, vibrations during transport could cause the bolt 106 and plate nut 107 to rotate freely relative to each other, potentially separating them, causing the bolt 106 to fall out of the bolt hole 105 of the horizontal plate 102, and the plate nut 107 to detach from the fastening member body 101. To prevent this and ensure that the bolt 106 arrives at the site in a loosely assembled state, a bolt 106 is fitted with a fall prevention device (first fall prevention device) 111.

[0018] As shown in Figure 2, the anti-detachment device 111 consists of a partially cut-out annular portion 112 and a protruding contact portion 114 that is connected to the annular portion 112 on the opposite side of the cut-out and extends outwards on both sides by a predetermined distance from the outer circumference of the annular portion 112. The annular portion 112 and the contact portion 114 are constructed as a single molded body made of a resin such as polyacetal (POM), polyamide (PA), or polycarbonate (PC), which has high wear resistance and high elasticity. The inner diameter of the annular portion 112 is set to be slightly narrower than the outer diameter of the bolt 106, and it is pressed onto the bolt 106 from the side by its elasticity and attached. Screw threads 113 that engage with the screw grooves of the bolt 106 are formed on the inner surface of the annular portion 112 to prevent misalignment. The contact portion 114 is configured such that it can fit inside the pair of side plates 110 of the plate nut 107, and the total width of the contact portion 114 is equivalent to or slightly narrower than the distance between the insides of the pair of side plates 110 of the plate nut 107.

[0019] The anti-loosening device 111 is inserted through the bolt hole 105 of the horizontal plate 102 and is fitted from the side onto the bolt 106 that is loosely screwed into the plate nut 107. The anti-loosening device 111 is positioned inside the plate nut 107 attached to the bolt 106, that is, between the bottom plate 109 and the edge of the side plate 110.

[0020] Since the annular portion 112 of the anti-loosening device 111 is press-fitted onto the bolt 106 and attached, free rotation of the bolt 106 is suppressed. Furthermore, since both ends of the contact portion 114 of the anti-loosening device 111 abut against the inner surfaces of the pair of side plates 110 of the plate nut 107, the plate nut 107 does not rotate independently of the anti-loosening device 111. As a result, the relative free rotation of the bolt 106 and the plate nut 107 via the anti-loosening device 111 is suppressed. This ensures that the temporary assembly state is maintained.

[0021] Furthermore, when tightening the bolt 106 firmly into the plate nut 107 to fasten the channel material 500 to the fastening member body 101, the screw threads 113 formed on the inner surface of the annular portion 112 engage with the screw grooves of the bolt 106, and move along the axial direction of the bolt 106 together with the plate nut 107 as the bolt 106 rotates. As a result, the anti-loosening device 111 does not obstruct the tightening of the channel material 500. The same is true when loosening the bolt 106 and removing the channel material 500 from the fastening member body 101.

[0022] A rectangular hole 115 is drilled near the rear end of the vertical plate 103, parallel to the vertical direction. The rectangular hole 115 is configured with a stepped shape, with a rectangular hole portion 116 and a slightly shorter rectangular hole portion 117 communicating with each other. The shorter rectangular hole portion 117 is located towards the rear end relative to the slightly longer rectangular hole portion 116. The length of the slightly longer rectangular hole portion 116 is configured to allow the strip-shaped engaging piece 202 of the clamping member body 201 (described later) to be inserted through it, while the length of the slightly shorter rectangular hole portion 117 is configured so that the engaging piece 202 cannot be inserted through it, but is only received by the notches 203 cut out on both sides near its tip. As a result, the engaging piece 202 of the clamping member body 201 is inserted into the rectangular hole 115 of the vertical plate 103 from the rectangular hole portion 116 and pushed into the rectangular hole portion 117, so that the engaging piece 202 engages with the rectangular hole portion 117 in the notch 203. The clamping member body 201 is cantilevered and tiltable relative to the fastening member body 101.

[0023] When the engaging piece 202 of the clamping member body 201 is inserted into the rectangular hole 115 of the vertical plate 103 and pushed towards the rear end, a leaf spring 204 with a U-shaped or V-shaped cross-section is fitted into the gap in the rectangular hole 115 in a state where it is slightly closed against its elasticity. This prevents the engaging piece 202 from coming out of the rectangular hole 115 and the clamping member body 201 from separating from the fastening member body 101. At the same time, the engagement point between the rectangular hole 115 and the engaging piece 202 acts as a fulcrum, biasing the tip of the clamping member body 201 to rotate and press against the vertical plate 103 of the fastening member body 101, thereby temporarily fixing the suspension bolt 400 between the clamping member body 201 and the vertical plate 103 of the fastening member body 101, i.e., tentative fastening.

[0024] One spring plate 216 of the leaf spring 204 has a width that matches the length of the rectangular hole portion 116 so that it fits into the slightly longer rectangular hole portion 116, and the other spring plate 215 has a width that matches the length of the rectangular hole portion 117 so that it fits into the slightly shorter rectangular hole portion 117. This allows the leaf spring 204 to press the engaging piece 202 against the rectangular hole portion 117.

[0025] To prevent the leaf spring 204 from becoming embedded in the rectangular hole 115, the edges of the spring plates 215 and 216 are extended outward, forming flanges 217 and 218. A hook portion 219 is provided on the spring plate 215, protruding outward. A hook receiving hole 220 is drilled in the engaging piece 202 to receive the hook portion 219. When the leaf spring 204 is pushed into the rectangular hole 115, the hook portion 219 fits into the hook receiving hole 220 of the engaging piece 202, preventing the leaf spring 204 from falling out. Additionally, a hook portion 221 is provided on the spring plate 216, protruding outward from the flange portion 218 at a distance approximately equivalent to the thickness of the vertical plate 103. When the leaf spring 204 is pushed into the rectangular hole 115, the flange portion 218 and the hook portion 221 clamp the vertical plate 103, thereby fixing the leaf spring 204 to the vertical plate 103.

[0026] By fitting the leaf spring 204 into the gap between the edge of the rectangular hole 116 and the engaging piece 202, the engaging piece 202 is prevented from coming out of the rectangular hole 115, so that the clamping member body 201 and the fastening member body 101 are maintained in a temporarily assembled state. This allows them to be shipped in a temporarily assembled state and transported directly to the work site. In addition, the elasticity of the leaf spring 204 biases the clamping member body 201 to rotate, pressing its tip against the vertical plate 103 of the fastening member body 101. This allows the suspension bolt 400 to be temporarily fixed (temporarily fastened) between the clamping member body 201 and the vertical plate 103 of the fastening member body 101, and also allows the suspension bolt support bracket 1 to be moved relative to the suspension bolt 400 while the clamping member body 201 is expanded relative to the fastening member body 101 against the elastic force of the leaf spring 204, making it easy to adjust the height of the suspension bolt support bracket 1 attached to the suspension bolt 400.

[0027] The clamping member 200 has a clamping member body 201. The clamping member body 201 is formed by bending a rectangular steel plate in the short direction to form a rectangular base plate 205 and a pair of side plates 206, creating a U-shape in cross-section. The steel plate is also bent in the longitudinal direction, and a strip-shaped engaging piece 202 extends from the rear end of the base plate 205, creating an L-shape in vertical cross-section. Each of the pair of side plates 206 has an arc-shaped recess 209, such as a semicircle, for receiving the suspension bolt 400. The edges of the side plates 206 that form the recess 209 are thinned so that they engage with the screw grooves of the suspension bolt 400 and prevent misalignment. The vertical plate 103 of the fastening member body 101 is also provided with a pair of linear projections 119 that engage with the screw grooves of the suspension bolt 400. The side plate 206 is configured in a tapered shape that narrows from the rear end to the front end, making it easy to insert the suspension bolt 400.

[0028] An oval-shaped bolt hole 207 is drilled at the tip of the base plate 205 for inserting a bolt (second bolt) 208. The bolt 208 is the same shape and size as the bolt 106. By passing the bolt 208 through the bolt hole 207 and screwing it into the threaded hole 118 drilled in the vertical plate 103 of the fastening member body 101, the suspension bolt 400 received in the recess 209 is clamped between the side plate 206 of the clamping member body 201 and the vertical plate 103 of the fastening member body 101. This allows the suspension bolt support bracket 1 to be fixed to the suspension bolt 400.

[0029] At the time of shipment, the bolt 208 is inserted into the bolt hole 207 of the base plate 205, but is not screwed into the screw hole 118 of the vertical plate 103 in a temporary assembly state. To prevent the bolt 208 from coming out of the bolt hole 207 of the base plate 205 and to maintain the temporary assembly state, a fall prevention device (second fall prevention device) 211 is fitted near the tip of the bolt 208. The fall prevention device 211 has a partially cut-out annular portion 212. The annular portion 212 is press-fitted onto the bolt 208, and since the annular portion 212 cannot pass through the bolt hole 207 of the base plate 205, the bolt 208 is prevented from coming out of the bolt hole 207 of the base plate 205.

[0030] The fall prevention device 211 may be the same shape and size as the fall prevention device 111, that is, it consists of an annular portion 212 and a protruding contact portion 214 that is connected to the annular portion 212 on the opposite side of the notch and extends outwards on both sides by a predetermined distance from the annular portion 212. The annular portion 212 and the contact portion 214 are constructed as a single molded body made of a resin such as polyacetal (POM), polyamide (PA), or polycarbonate (PC).

[0031] The inner diameter of the annular portion 212 is slightly narrower than the outer diameter of the bolt 208, allowing it to be pressed onto the bolt 208 from the side due to its elasticity. A thread 213 is formed on the inner surface of the annular portion 212 to screw into the thread groove of the bolt 208. The total width of the contact portion 214 is equivalent to or narrower than the inner distance (internal dimension) between the pair of side plates 206 of the clamping member body 201, so that it can fit inside the pair of side plates 206 of the clamping member body 201. The contact portion 214 is wider than the elongated hole of the bolt hole 207, and has a width that prevents it from falling out.

[0032] As shown in Figure 7(a), the suspension bolt support bracket 1 is delivered to the work site in a pre-assembled state. The bolt 208 is inserted into the bolt hole 207 of the base plate 205, and a fall prevention device 211 is attached to its tip. This prevents the bolt 208 from coming out of the bolt hole 207 of the clamping member body 201, and maintains its inserted state. In addition, the engaging piece 202 of the clamping member body 201 is inserted into the rectangular hole 115 of the fastening member body 101, and a leaf spring 204 is fitted into the gap between them. This prevents the engaging piece 202 from coming out of the rectangular hole 115, and maintains the state in which the clamping member body 201 is assembled to the fastening member body 101.

[0033] Furthermore, the bolt 106 is inserted into the bolt hole 105 of the horizontal plate 102 of the fastening member body 101 and loosely screwed into the plate nut 107. The bolt 106 is fitted with a fall prevention device 111 in a position that fits inside the plate nut 107. The fall prevention device 111 prevents the plate nut 107 from freely rotating relative to the bolt 106, thus preventing the bolt 106 from coming out of the bolt hole 105, and also preventing the plate nut 107 from coming off the bolt 106. Therefore, a state in which the bolt 106 and plate nut 107 are temporarily assembled to the horizontal plate 102 of the fastening member body 101 can be ensured.

[0034] Since the temporary assembly state of the suspension bolt support bracket 1 is maintained, it can be shipped in that temporary assembly state and delivered to the work site. As a result, temporary assembly work is not required at the work site, and the work of attaching the suspension bolt support bracket 1 to the suspension bolt 400 and attaching the channel material 500 to the suspension bolt support bracket 1 can be started immediately.

[0035] As shown in Figure 7(b), when attaching the suspension bolt support bracket 1 to the suspension bolt 400, the worker expands the clamping member body 201 and the vertical plate 103 of the fastening member body 101, using the engagement point between the rectangular hole 115 and the engaging piece 202 as a fulcrum, against the elasticity of the leaf spring 204. In this state, the suspension bolt 400 is inserted from the side between the clamping member body 201 and the vertical plate 103 of the fastening member body 101, and then released. Of course, because of the elastic force of the leaf spring 204 and the tapered shape of the side plate 206, the bolt 400 can be inserted into 209 even if it is pushed in.

[0036] As shown in Figure 7(c), the elasticity of the leaf spring 204 causes the clamping member body 201 and the vertical plate 103 of the fastening member body 101 to clamp the suspension bolt 400. As a result, the suspension bolt support bracket 1 is locked (temporarily fixed) to the suspension bolt 400. To fine-tune the height of the suspension bolt support bracket 1 relative to the suspension bolt 400, the worker opens the clamping member body 201 and the vertical plate 103 of the fastening member body 101 to release the suspension bolt support bracket 1 from the suspension bolt 400, moves along the suspension bolt 400, and releases their hand at the appropriate height, at which point the suspension bolt support bracket 1 is locked again to the suspension bolt 400. This eliminates the need to loosen and tighten the bolt for temporary fixing, thus streamlining the fine-tuning of the height.

[0037] As shown in Figure 7(d), to fix the suspension bolt support bracket 1 to the suspension bolt 400, the bolt 208 is placed in the screw hole 118 of the vertical plate 103 and tightened. Since the fastening member body 101 is engaged with the rectangular hole portion 117 of the vertical plate 103 on the engaging piece 202, the suspension bolt support bracket 1 can be firmly fixed to the suspension bolt 400 by tightening a single bolt 208, which is more efficient than tightening a pair of bolts alternately little by little to evenly tighten them.

[0038] To fasten the channel member 500 to the suspension bolt support bracket 1 fixed to the suspension bolt 400, first position the channel member 500 vertically as shown in Figure 8 or horizontally as shown in Figure 9 relative to the suspension bolt support bracket 1, and insert the plate nut 107, aligned vertically or horizontally, into the inside of the channel member 500 through the gap (opening) between the lip pieces 502 of the channel member 500. When the bolt 106 is tightened, the plate nut 107 rotates along with the rotation of the bolt 106, and stops when both ends of the long side of the plate nut 107 are in contact with the inner surface of the side plate 501 of the channel member 500. When the bolt 106 is tightened further, the lip piece 502 of the channel member 500 can be fastened between the upper edge of the side plate 110 of the plate nut 107 and the lower surface of the horizontal plate 102. Since the plate nut 107 is loosely fixed to the bolt 106 by the anti-loosening device 111, the plate nut 107 can be easily inserted into the gap between the lip pieces 502 of the channel material 500. Also, since the bolt 106 is the same shape and size as the bolt 208, there is no need to change sockets or ratchet wrenches. The channel material 500 can be attached to the suspension bolt 400 by tightening just two bolts 106 and 208, which is more efficient than the conventional method that required tightening three bolts. The contact portion 114 of the anti-loosening device 111 prevents the plate nut 107 from rotating when tightening the bolt 106. Therefore, there is no need to hold the plate nut 107 by hand to match the orientation of the channel material.

[0039] Note that the fastening member body 101 can be replaced with the fastening member body 301 shown in Figures 10 and 11, which supports the channel material 500 in a horizontal direction. The fastening member body 301 is made of steel that has been bent into a U-shape in cross-section, and has a screw hole 318 corresponding to the screw hole 118, a rectangular hole 315 corresponding to the rectangular hole 115, a bolt hole 305 corresponding to the bolt hole 105, and a linear projection 319 corresponding to the linear projection 119.

[0040] (Second Embodiment) Figures 12 to 14 show the support fittings for suspension bolts according to the second embodiment. The main differences between the support fitting 2 for suspension bolts according to this embodiment and the support fitting 1 for suspension bolts according to the first embodiment are the structure in which the clamping member body 701 is temporarily assembled to the fastening member body 601 and the temporary fixing structure in which the clamping member body is pressed against the fastening member body.

[0041] Regarding the temporary assembly structure, a bolt 208 is inserted into a bolt hole 207 of the clamping member body 701 and screwed into a threaded hole 118 of the fastening member body 601. The fastening member body 601 is bent into a U-shape in cross-section to form a pair of side plates 602, and a pair of side plates 206 of the clamping member body 701 are fitted into the gap between the pair of side plates 602 so as to prevent rotation from being locked between them. Furthermore, a fall prevention device 211 is attached to the bolt 208 so as to its contact portion 214 to contact the pair of side plates 206 of the clamping member body 701. The rotation of the bolt 208 relative to the clamping member body 701 is suppressed, and the fastening member body 601 does not rotate relative to the clamping member body 701, so the bolt 208 does not fall out of the threaded hole 118 of the fastening member body 601, the clamping member body 701 does not separate from the fastening member body 601, and the temporary assembly is achieved.

[0042] Regarding the temporary fastening structure, each side plate 602 of the fastening member body 601 has an arc-shaped recess 603, such as a semicircle, formed at a position opposite to the recess 209 of the side plate 206 of the clamping member body 701. The suspension bolt is received in the circular gap formed by the recess 209 of the clamping member body 701 and the recess 603 of the fastening member body 601. Furthermore, a conical compression coil spring 702 is inserted into the bolt 208 and interposed between the head of the bolt 208 and the base plate 205 of the clamping member body 701. The bolt 208 is screwed into the threaded hole 118 of the fastening member body 601, and its relative position to the fastening member body 601 is fixed, so the clamping member body 701 positioned between them is pressed against the fastening member body 601 by the repulsive force of the coil spring 702. The coil spring 702 constitutes the spring portion that presses the clamping member body 701 against the fastening member body 601. This structure allows the suspension bolts received in recesses 209 and 603 to be temporarily fixed (temporarily secured).

[0043] When attaching the suspension bolt support bracket to the suspension bolt, the worker expands the clamping member body 701 and the fastening member body 601 against the repulsive force of the coil spring 702, inserts the suspension bolt between them from the side, and then releases their hand. The repulsive force of the coil spring 702 temporarily fixes (temporarily fastens) the suspension bolt support bracket to the suspension bolt.

[0044] This embodiment can achieve the same effects and advantages as the first embodiment.

[0045] (Third embodiment) Figures 15 to 17 show a support fitting for a suspension bolt according to the third embodiment. The main differences between this embodiment and the first embodiment are the temporary fastening structure that presses the clamping member body against the fastening member body and the structure that prevents the clamping member body from falling off the fastening member body.

[0046] A leaf spring portion 911 extends from one end of the base plate 205 of the clamping member body 901, bent inward approximately perpendicularly. Furthermore, the tip of the leaf spring portion 911 is bent outward approximately perpendicularly as a leaf spring portion 912, so that the entire L-shaped leaf spring 910 is formed as a strip-shaped engaging piece. A rectangular locking hole 913 is made slightly inward from the tip of the leaf spring portion 912.

[0047] On the other hand, a rectangular insertion opening 807 for inserting the leaf spring 910 is provided in the vertical plate 103 of the fastening member body 801. A strip-shaped retaining piece 804 extends from one end of the vertical plate 103, bent almost vertically, and a rectangular insertion hole 805 for inserting the leaf spring portion 912 is provided at the corner between the retaining piece 804 and the vertical plate 103, slightly straddling both. A locking portion 806 is provided in the insertion hole 805, which protrudes toward the vertical plate 103, and the locking hole 913 of the leaf spring portion 912 is fitted into this locking portion 806.

[0048] When temporarily assembling the clamping member body 901 to the fastening member body 801, the leaf spring portion 911 and the leaf spring portion 912 of the clamping member body 901 are inserted into the insertion opening 807 of the fastening member body 801, the leaf spring portion 912 is inserted into the insertion hole 805 of the retaining piece 804 while compressing the leaf spring 910, and the locking hole 913 is fitted into the locking portion 806. In order to guide the insertion of the leaf spring portion 912 into the insertion hole 805 while compressing the leaf spring 910, the tip of the leaf spring portion 912 is gently bent toward the leaf spring portion 911.

[0049] Since the leaf spring 910 is compressed with its leaf spring portion 912 locked to the locking portion 806, the repulsive force causes the edge 914 of the side plate 206 of the clamping member body 901 to be strongly pressed against the vertical plate 103. The leaf spring 910 constitutes the spring portion that presses the clamping member body 901 against the fastening member body 801.

[0050] When attaching the suspension bolt support bracket to the suspension bolt, the worker expands the clamping member body 901 against the elasticity of the leaf spring 910 relative to the fastening member body 801, inserts the suspension bolt between them from the side, and then releases their hand. The repulsive force of the leaf spring 910 temporarily fixes (temporarily fastens) the suspension bolt support bracket to the suspension bolt. The side plate is configured in a tapered shape that narrows from the rear end to the front end, making it easy to insert the suspension bolt.

[0051] In this embodiment, the same effects and advantages as in the first embodiment can be achieved, and furthermore, the structure can be simplified by using a leaf spring that can be integrally constructed with the base plate 205 to realize both the structure in which the clamping member body 901 is temporarily assembled to the fastening member body 801 and the structure in which it is temporarily fixed to the suspension bolt.

[0052] The present invention is not limited to the embodiments described above, and can be modified in various ways during implementation without departing from its essence. Furthermore, each embodiment may be combined as appropriate, and in that case, the combined effects can be obtained. Moreover, the above embodiments include various inventions, and various inventions can be extracted by selecting combinations from the multiple constituent elements disclosed. For example, if the problem can be solved and effects obtained even if some constituent elements are deleted from all the constituent elements shown in the embodiment, then the configuration with these deleted constituent elements can be extracted as an invention. [Explanation of Symbols]

[0053] 1...Support bracket for suspension bolt, 400...Suspension bolt, 500...Channel material, 100...Fastening member, 101...Fastening member body, 102...Horizontal plate, 103...Vertical plate, 104...Pressing plate, 105...Bolt hole, 106...Bolt (first bolt), 107...Plate nut, 108...Screw hole, 109...Bottom plate, 110...Side plate, 111...Anti-drop device (first anti-drop device), 112...Ring part, 113...Screw thread, 114...Contact part, 115...Rectangular hole, 116...Rectangular hole section, 117...Rectangle Hole portion, 119... Linear projection, 200... Clamping member, 201... Clamping member body, 202... Engagement piece, 203... Notch, 204... Leaf spring, 205... Base plate, 206... Side plate, 207... Bolt hole, 208... Bolt (second bolt), 209... Recess, 211... Anti-drop device (second anti-drop device), 212... Ring portion, 213... Screw thread, 214... Contact portion, 215... Spring plate, 216... Spring plate, 217, 218... Flange portion, 219... Hook portion, 220... Hook receiving hole, 221... Hook portion.

Claims

1. In a support bracket for a suspension bolt that supports a channel material with respect to the suspension bolt, A fastening member body for fastening the channel material, A clamping member body for clamping the suspension bolt together with the fastening member body, In order to temporarily fasten the support bracket for the suspension bolt to the suspension bolt, the suspension bolt is sandwiched between the brackets. A spring portion that presses the clamping member body against the fastening member body, The fastening member body is provided with a first bolt and a plate nut for fastening the channel material, In order to fix the support bracket for the suspension bolt to the suspension bolt, a second bolt is provided to fasten the clamping member body to the fastening member body, sandwiching the suspension bolt. A support bracket for suspension bolts that is equipped with the following features.

2. The fastening member body has a horizontal plate and a vertical plate, The horizontal plate and the plate nut are fastened together by the first bolt with a pair of lip pieces of the channel material sandwiched between them. The support fitting for a suspension bolt according to claim 1, wherein the vertical plate and the clamping member body are fastened to each other by the second bolt with the suspension bolt sandwiched between them.

3. The support fitting for a suspension bolt according to claim 2, wherein the plate nut is inserted into the inside of the channel material through the gap between the lip pieces of the channel material and rotated to sandwich the pair of lip pieces between itself and the horizontal plate.

4. The support fitting for a suspension bolt according to claim 2 or 3, wherein the edge of the horizontal plate is bent downward to prevent rotation of the channel material.

5. The support fitting for a suspension bolt according to any one of claims 1 to 4, wherein the spring portion is a coil spring.

6. The support fitting for a suspension bolt according to any one of claims 1 to 5, wherein the plate nut rotates inside the channel material in conjunction with the rotation of the first bolt, and stops with both ends in the longitudinal direction in contact with the inner surface of the side plate of the channel material.

7. The support fitting for a suspension bolt according to any one of claims 1 to 6, wherein the plate nut has a width shorter than the gap between the pair of lip pieces and a length slightly shorter than the distance between the inner sides of the pair of side plates of the channel material.

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