Hanger bolt support fitting

Abstract

To provide a hanging bolt support fitting whose mounting attitude to a horizontal member is hardly changed when an earthquake occurs.SOLUTION: The hanger bolt support fitting 1 is attached to a horizontal member 10 such as a channel steel having a horizontal plate portion 12,13 extending in a horizontal direction from an upper end or a lower end of a vertical plate portion 11. The hanging bolt support fitting 1 has the pair of flange portions 3 and 4 that are attached to the horizontal member 10 from the leading end side of the horizontal plate portion 12,13 and protrude in parallel to each other toward the outside of the vertical plate portion 11 in a state of being joined to the upper end and the lower end of the vertical plate portion 11 by being attached to the horizontal member 10, and the attachment holes 7 and 8 for attaching the hanging bolt 9 are formed at the leading ends of the pair of flange portions 3 and 4. At least the lower flange part 4 of the pair of flange parts 3, 4 is provided with an abutting part 6 abutting on the outside surface 11a of the vertical plate part 11.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a suspension bolt support bracket. [Background technology]

[0002] Conventionally, a suspension bolt support bracket that can be attached to a beam such as a structural steel has been proposed (for example, Patent Document 1). This suspension bolt support bracket is attached to a beam by hooking a hooking piece provided at the top of a hooking member with a roughly C-shaped structure onto the upper surface of the beam and tightening a fastening bolt to the underside of the beam. This suspension bolt support bracket is equipped with an attachment mechanism on the body of the hooking member, and a suspension bolt can be attached to this attachment mechanism. Therefore, when attaching a suspension bolt to a beam using this suspension bolt support bracket, the work of attaching and fixing the hooking member to the beam and the work of attaching the suspension bolt to the attachment mechanism must be performed separately, resulting in poor work efficiency.

[0003] Also, a hanger bolt support bracket 200 as shown in FIG. 14 has been used in the past. This hanger bolt support bracket 200 has a pair of upper and lower flange portions 203, 204. The upper flange portion 203 is arranged to join to the upper surface of the cross member 10, and the lower flange portion 204 is arranged to join to the underside of the cross member 10. When the hanger bolt support bracket 200 is attached to the cross member 10, the tips of the flange portions 203, 204 protrude outward from the vertical plate portion 11 of the cross member 10. A screw hole 205 is formed in the flange portion 203, and the upper end of a hanger bolt 209 is screwed into the screw hole 205. The flange portion 204 is formed with a hole 206 through which the hanger bolt 209 can be inserted. A nut 215 is fastened to the underside of the flange portion 204, thereby fixing the hanger bolt support bracket 200 to the cross member 10 and fixing the hanger bolt 209 to the hanger bolt support bracket 200. Therefore, the conventional suspension bolt support fitting 200 shown in FIG. 14 is excellent in work efficiency in that the work of fixing it to the cross member 10 and the work of installing the suspension bolt 209 can be performed simultaneously as a single operation. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Utility Model Registration No. 3170569 Summary of the Invention [Problem to be solved by the invention]

[0005] Incidentally, when the suspension bolt support bracket 200 shown in Fig. 14 is supporting the suspension bolt 209, the suspension bolt 209 may vibrate due to an earthquake or the like. The suspension bolt 209 supports a ceiling-suspended object such as an air conditioner suspended in the ceiling space. Therefore, when lateral shaking occurs during an earthquake, the suspension bolt 209 will vibrate significantly from side to side depending on the weight of the ceiling-suspended object.

[0006] Fig. 15 is a diagram illustrating an example of a lateral vibration state of a suspension bolt 209 supported by a suspension bolt support bracket 200. As shown in Fig. 15, it is assumed that the suspension bolt 209 vibrates laterally along the longitudinal direction of the cross member 10. At this time, a lateral force F acts on the lower flange portion 204 along the longitudinal direction of the cross member 10, as shown in Fig. 15. If this force F becomes large, the mounting posture of the conventional suspension bolt support bracket 200 relative to the cross member 10 may change, causing the cross member 10 to slide laterally in the longitudinal direction.

[0007] FIG. 16 is a plan view showing the change in posture of a conventional suspension bolt support bracket 200. When the lateral force F acting on the lower flange portion 204 increases, the suspension bolt support bracket 200 changes to an inclined posture relative to the cross member 10 as shown in FIG. 16. This change in posture also changes the hanging position of the suspension bolt 209. Therefore, the change in posture of the suspension bolt support bracket 200 relative to the cross member 10 may change the hanging posture of the ceiling-suspended object, which is a major problem. In particular, when a large-scale earthquake occurs, the suspension bolt support bracket 200 may not only change its posture as shown in FIG. 16, but may also slide sideways along the longitudinal direction of the cross member 10.

[0008] SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to provide a suspension bolt support bracket whose mounting position relative to a cross member is unlikely to change. [Means for solving the problem]

[0009] In order to achieve the above-mentioned object, first, the present invention provides a hanging bolt support bracket that is attached to a horizontal member having a horizontal plate portion extending horizontally from the upper or lower end of a vertical plate portion, and is attached to the horizontal member from the tip side of the horizontal plate portion, and has a pair of flange portions that protrude parallel to each other toward the outside of the vertical plate portion while being joined to the upper and lower ends of the vertical plate portion by being attached to the horizontal member, and mounting holes for mounting hanging bolts are formed at the tips of the pair of flange portions, and at least the lower flange portion of the pair of flange portions is provided with an abutment portion that abuts against the outer surface of the vertical plate portion.

[0010] Secondly, the present invention provides a suspension bolt support fitting having the above-mentioned first configuration, characterized in that the abutment portion is fixed to the upper surface of at least the lower flange portion.

[0011] Thirdly, the present invention is a bolt support fitting having the above-mentioned first or second configuration, characterized in that the pair of flange portions have a predetermined width in the longitudinal direction of the cross member, and the abutment portion protrudes outward from both widthwise ends of at least the lower flange portion and abuts against the outer surface of the vertical plate portion.

[0012] Fourth, the present invention is a bolt support fitting having the third configuration described above, characterized in that the abutment portion is bent upward in portions that protrude outward from both widthwise ends of the lower flange portion.

[0013] Fifth, the present invention provides a bolt support fitting having the third configuration described above, characterized in that the cross member is a channel steel, and the pair of flange portions are integrally formed with a fitting body formed in a U-shape. [Effects of the Invention]

[0014] According to the present invention, it is possible to provide a suspension bolt support fitting whose mounting position relative to a cross member is unlikely to change. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 2 is a perspective view showing the suspension bolt support fitting of the first embodiment. [Figure 2] 10A and 10B are diagrams illustrating an example of how a hanging bolt support bracket is attached to a cross member. [Figure 3] FIG. 10 is a perspective view showing the state in which the suspension bolt support bracket is attached to the cross member. [Figure 4] FIG. 10 is a side view showing the state in which the suspension bolt support bracket is attached to the cross member. [Figure 5] 10A and 10B are diagrams illustrating an example of a lateral vibration state of a suspension bolt supported by a suspension bolt support bracket. [Figure 6] FIG. 10 is a plan view showing a suspension bolt support bracket attached to a cross member. [Figure 7] FIG. 1 is a diagram showing a test environment for a test comparing a conventional product with an embodiment of the present invention. [Figure 8] FIG. 10 is a diagram showing test results of a conventional hanging bolt support bracket. [Figure 9] FIG. 10 is a diagram showing test results of a hanging bolt support bracket that is an embodiment of the present invention. [Figure 10] FIG. 10 is a view showing a suspension bolt support fitting in a second embodiment. [Figure 11] 10A and 10B are diagrams showing a suspension bolt support fitting according to a third embodiment. [Figure 12] 10A and 10B are diagrams showing a suspension bolt support fitting in a fourth embodiment. [Figure 13] FIG. 10 is a diagram showing an example of a hanging bolt support bracket attached to an angle iron. [Figure 14] FIG. 10 is a diagram showing a conventional hanging bolt support bracket. [Figure 15] FIG. 10 is a diagram showing a state in which the suspension bolt swings laterally along the longitudinal direction of the cross member. [Figure 16] 10A and 10B are diagrams illustrating changes in the posture of a conventional hanging bolt support bracket. DETAILED DESCRIPTION OF THE INVENTION

[0016] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the drawings referred to below, common members are designated by the same reference numerals, and redundant descriptions thereof will be omitted.

[0017] (First embodiment) Fig. 1 is a perspective view showing a suspension bolt support bracket 1 in a first embodiment of the present invention. Fig. 2 is a diagram illustrating an example of attaching the suspension bolt support bracket 1 to a cross member 10. Fig. 3 is a perspective view showing the suspension bolt support bracket 1 attached to the cross member 10. Fig. 4 is a side view showing the suspension bolt support bracket 1 attached to the cross member 10. The XYZ three-dimensional coordinate systems shown in these figures are coordinate systems in which the XY plane is the horizontal plane and the Z direction is the vertical direction, and are common to each other.

[0018] As shown in FIG. 1, the suspension bolt support bracket 1 includes a bracket body 2 formed in a roughly U-shape. As shown in FIG. 2, this suspension bolt support bracket 1 is attached to a horizontal member 10 formed of a channel steel or the like, and supports a suspension bolt 9. The horizontal member 10 to which the suspension bolt support bracket 1 is attached is installed so as to span the ceiling space of a building horizontally, for example. The horizontal member 10, formed of a steel material such as a channel steel, has a vertical plate portion 11 disposed in the vertical direction, and horizontal plate portions 12, 13 extending horizontally from the upper or lower end of the vertical plate portion 11. The suspension bolt support bracket 1 is attached to the horizontal member 10 from the tip side of the horizontal plate portions 12, 13, as shown by the arrows in FIG. 2.

[0019] As shown in Figure 1, the fixture body 2 of the suspension bolt support fixture 1 has a pair of flange portions 3, 4 that extend horizontally and are spaced apart a predetermined distance H1 in the vertical direction, with the base ends of the pair of flange portions 3, 4 connected by a connecting portion 5 that extends vertically. When the suspension bolt support fixture 1 is attached to a cross member 10, it is attached with the flange portion 3 on the upper side and the flange portion 4 on the lower side. These flange portions 3, 4 are formed to have a predetermined width W1.

[0020] An attachment hole 7 for attaching a suspension bolt 9 is formed at the tip of the upper flange portion 3. This attachment hole 7 is formed as a screw hole into which the suspension bolt 9 can be screwed.

[0021] An attachment hole 8 into which a suspension bolt 9 can be attached is formed at the tip of the lower flange portion 4. This attachment hole 8 is a through-hole into which the suspension bolt 9 can be loosely inserted. In other words, the inner diameter of the attachment hole 8 is the same as or slightly larger than the outer diameter of the suspension bolt 9. However, when the suspension bolt 9 is inserted into the attachment hole 8, it is preferable to make the gap between the inner peripheral surface of the attachment hole 8 and the outer peripheral surface of the suspension bolt 9 as small as possible.

[0022] Furthermore, an abutment portion 6 is provided at the tip of the lower flange portion 4. For example, the abutment portion 6 is formed by forming an attachment hole 8 in the center of a rectangular metal plate, and welding the metal plate to the tip top surface of the flange portion 4, thereby fixing the abutment portion 6 to the tip top surface of the flange portion 4. In other words, the abutment portion 6 is formed integrally with the tip of the flange portion 4. Such a abutment portion 6 forms a convex portion on the tip top surface of the flange portion 4. Therefore, the abutment portion 6 forms a step on the tip top surface of the flange portion 4, and the step surface facing the connecting portion 5 functions as an abutment surface 6a, which will be described later. Here, the distance between the abutment surface 6a of the abutment portion 6 and the connecting portion 5 is formed to be a predetermined distance D1.

[0023] The abutting portion 6 also has a predetermined width W2 in the width direction of the suspension bolt support bracket 1. This width W2 is larger than the width W1 of the flange portion 4. Therefore, the abutting portion 6 protrudes further outward from both ends of the lower flange portion 4 in the width direction.

[0024] 2, the height dimension of the cross member 10 is H2. The distance H1 between the pair of flange portions 3, 4 is set to be the same dimension as the height dimension H2 of the cross member 10. Therefore, when the suspension bolt support bracket 1 is attached to the cross member 10, the upper flange portion 3 is joined to the top surface of the cross member 10, and the lower flange portion 4 is joined to the underside of the cross member 10.

[0025] As shown in Fig. 2, the dimension of the cross member 10 in the width direction (X direction) is D2. The flange portions 3 and 4 are longer than the dimension D2. Therefore, when the suspension bolt support bracket 1 is attached to the cross member 10, the tips of the flange portions 3 and 4 protrude further outward from the outer surface 11a of the vertical plate portion 11, as shown in Fig. 3. At this time, the mounting hole 7 of the flange portion 3 and the mounting hole 8 of the flange portion 4 are positioned further outward than the outer surface 11a of the vertical plate portion 11.

[0026] Furthermore, the distance D1 between the abutment surface 6a of the abutment portion 6 and the connecting portion 5 is set to be the same dimension as the widthwise dimension D2 of the cross member 10. Therefore, when the suspension bolt support bracket 1 is attached to the cross member 10 and the connecting portion 5 abuts against the tips of the horizontal plate portions 12 and 13 as shown in FIG. 4, the lower part of the cross member 10 is accommodated between the abutment surface 6a and the connecting portion 5, and the abutment surface 6a of the abutment portion 6 abuts against the outer surface 11a of the vertical plate portion 11, as shown in FIG. 4. In other words, the abutment portion 6 of the suspension bolt support bracket 1 is arranged to abut against the lower part of the vertical plate portion 11 of the cross member 10.

[0027] The suspension bolt 9 is attached to the mounting holes 7, 8 of the flange portions 3, 4 that protrude outward from the vertical plate portion 11 of the cross member 10. As described above, the mounting hole 7 formed in the upper flange portion 3 is a threaded hole. Therefore, the upper end of the suspension bolt 9 is screwed into the mounting hole 7 of the flange portion 3. The lower portion of the suspension bolt 9 is inserted into the mounting hole 8 of the flange portion 4. A nut 15 is attached to the suspension bolt 9 on the underside of the flange portion 4. When the nut 15 is fastened to the underside of the flange portion 4, the suspension bolt 9 is fixed in a state where it is supported by the suspension bolt support bracket 1. Furthermore, when the nut 15 is fastened to the underside of the flange portion 4, a tensile force acts between the pair of flange portions 3, 4, and this tensile force fixes the suspension bolt support bracket 1 to a predetermined position in the longitudinal direction of the cross member 10. In other words, this suspension bolt support bracket 1 has excellent work efficiency because the work of fixing it to the cross member 10 and the work of installing the suspension bolt 209 can be performed simultaneously as a single operation. In this way, the suspension bolt 9 is supported in a state where it hangs down from the cross member 10 as shown in Figures 3 and 4.

[0028] When the suspension bolt support bracket 1 configured as described above is attached to the cross member 10, the abutment portion 6 comes into contact with the vertical plate portion 11 of the cross member 10. The abutment portion 6 protrudes further outward from both widthwise ends of the flange portion 4, and abuts against the vertical plate portion 11 over an area wider than the width of the flange portion 4. By the abutment portion 6 abutting against the vertical plate portion 11, the suspension bolt support bracket 1 can stabilize the support position of the suspension bolt 9.

[0029] 5 is a diagram illustrating an example of a state in which a suspension bolt 9 supported by a suspension bolt support bracket 1 sways sideways. When an earthquake or the like occurs while the suspension bolt support bracket 1 attached to a cross member 10 is supporting the suspension bolt 9, the suspension bolt 209 sways sideways along the longitudinal direction of the cross member 10, as shown in FIG. 5. At this time, a lateral force F acts on the lower flange portion 4 along the longitudinal direction of the cross member 10, as shown in FIG. 5. Because the abutting portion 6 of the lower flange portion 4 abuts against the outer surface 11a of the vertical plate portion 11, the suspension bolt support bracket 1 does not change its posture even when such a lateral force F acts on it.

[0030] FIG. 6 is a plan view showing the hanger bolt support bracket 1 attached to a cross member 10. As shown in FIG. 6, the abutting portion 6 abuts against the vertical plate portion 11 over an area wider than the width of the flange portions 3 and 4. Therefore, the abutting portion 6 functions as a stopper that restricts changes in the posture of the hanger bolt support bracket 1. In other words, even if a lateral force F as shown in FIG. 5 acts on the flange portions 4, the abutting portion 6 restricts changes in the posture of the hanger bolt support bracket 1, and does not change the support position of the hanger bolt 9 relative to the cross member 10. Therefore, the hanger bolt support bracket 1 of this embodiment is realized as a bracket with higher earthquake resistance than conventional ones.

[0031] Next, we will explain the results of a test comparing a conventional product with a product according to the present invention. FIG. 7 shows the test environment. As shown in FIG. 7, this test was conducted by fixing a hanging bolt 9 to a hanging bolt support bracket 1 attached to a cross member 10, engaging an arm 102 with a part of the hanging bolt 9, and applying a load in the X direction to the arm 102 using a hydraulic cylinder 100. A load meter 101, such as a load cell, was installed between the hydraulic cylinder 100 and the arm 102, and the load acting on the hanging bolt 9 was measured by the hydraulic cylinder 100. A displacement meter 110 was also fixed to the cross member 10, and a contact-type arm 111 extending from the displacement meter 110 was brought into contact with the side surface of the flange 4 to measure the displacement of the flange 4 in the X direction relative to the cross member 10. In this test, the displacement of the flange 4 was measured while the load applied by the hydraulic cylinder 100 was cycled between -1.5 kN and 1.5 kN.

[0032] Figure 8 shows the test results for the conventional hanger bolt support bracket 200 shown in Figures 14 to 16. The conventional hanger bolt support bracket 200 has no resistance to the lateral force F. Therefore, as shown in Figure 8, when a load of -1.5 kN to 1.5 kN is applied in the X direction, the flange portion 4 is displaced relative to the cross member 10 in the range of -8 mm to +13 mm.

[0033] Fig. 9 shows test results for the hanger bolt support bracket 1 of this embodiment. As shown in Fig. 9, in the hanger bolt support bracket 1 of this embodiment, the abutment portion 6 functions as a stopper that restricts the relative displacement of the flange portion 4. Therefore, even when a load of -1.5 kN to 1.5 kN is applied in the X direction, the amount of displacement of the flange portion 4 is small, within a range of about 1 mm, as shown in Fig. 9. Therefore, it is clear that the hanger bolt support bracket 1 of this embodiment exhibits superior earthquake resistance performance compared to the conventional hanger bolt support bracket 200.

[0034] In this embodiment, a configuration example has been described in which the abutment portion 6 is provided only on the lower flange portion 4 of the pair of flange portions 3, 4. However, this is not limited to this, and the abutment portion 6 may be provided on both of the pair of flange portions 3, 4. However, a configuration in which the abutment portion 6 is provided only on the upper flange portion 3 and not on the lower flange portion 4 is not preferable. This is because the lateral force F acting due to the lateral swing of the suspension bolts 9 during an earthquake acts directly on the lower flange portion 4. Therefore, it is preferable to provide the abutment portion 6 on at least the lower flange portion 4.

[0035] (Second embodiment) Next, a second embodiment of the present invention will be described. Fig. 10 shows a hanger bolt support bracket 1 in the second embodiment. Fig. 10(a) is a front view showing the hanger bolt support bracket 1 attached to a cross member 10, and Fig. 10(b) is a perspective view thereof. As in the first embodiment, this hanger bolt support bracket 1 has a contact portion 6 fixed to the upper surface of the lower flange portion 4. As shown in Fig. 10(a), this contact portion 6 protrudes outward from both widthwise ends of the flange portion 4, and the protruding portions are bent diagonally upward. By bending both ends of the contact portion 6 upward in this manner, the contact portion 6 more reliably abuts against the vertical plate portion 11 of the cross member 10.

[0036] For example, if the abutment portion 6 were provided in a flat state as in the first embodiment, when a large force F (FIG. 5) that changes the posture of the suspension bolt support bracket 1 is applied during an earthquake, the cross member 10 may ride up on the top surface of the abutment portion 6, which may prevent the abutment portion 6 from functioning properly as a stopper. In contrast, the suspension bolt support bracket 1 of this embodiment has both ends of the abutment portion 6 bent upward, so the cross member 10 will not ride up on the top surface of the abutment portion 6, and the stopper function of the abutment portion 6 can always function effectively. This has the advantage of more reliably preventing the suspension bolt support bracket 1 from changing its posture or moving relative to the cross member 10.

[0037] (Third embodiment) Next, a third embodiment of the present invention will be described. Fig. 11 shows a hanger bolt support bracket 1 in the third embodiment. Fig. 11(a) is a front view showing the hanger bolt support bracket 1 attached to a cross member 10, and Fig. 11(b) is a perspective view thereof. Like the first embodiment, this hanger bolt support bracket 1 has a contact portion 6 that protrudes from the upper surface of the lower flange portion 4. This contact portion 6 is formed by bending both widthwise ends of the lower flange portion 4 upward as shown in Fig. 11(a). Therefore, the hanger bolt support bracket 1 of this embodiment does not require welding a metal plate to the flange portion 4 to form the contact portion 6.

[0038] The abutment portion 6 further protrudes a predetermined height above the upper surface of the flange portion 4. Therefore, when the suspension bolt support bracket 1 is attached to the cross member 10, the abutment portion 6 abuts against the outer surface 11a of the vertical plate portion 11 of the cross member 10. This allows the abutment portion 6 to effectively function as a stopper, preventing the suspension bolt support bracket 1 from changing its posture or moving in the event of an earthquake. In other words, the suspension bolt support bracket 1 of this embodiment has the same effects as the first and second embodiments.

[0039] (Fourth embodiment) Next, a fourth embodiment of the present invention will be described. Fig. 12 is a diagram showing a suspension bolt support bracket 1 in the fourth embodiment. In this suspension bolt support bracket 1, an abutment member 20 is attached to a flange portion 4 on the underside, thereby forming an abutment portion 6. Fig. 12(a) is a perspective view showing the suspension bolt support bracket 1 with the bracket main body 2 and the abutment member 20 separated, and Fig. 12(b) is a perspective view showing the abutment member 20 attached to the bracket main body 2.

[0040] 12(a), the abutment member 20 is formed using a metal plate 21 as a base material. The abutment member 20 has an attachment hole 22 formed in the center of the metal plate 21 and abutment pieces 23, 23 standing at a predetermined interval on both ends of the metal plate 21 in the width direction. For example, the abutment pieces 23, 23 are formed by bending upward the portions of the metal plate 21 that protrude from both ends in the width direction. For example, the interval at which the abutment pieces 23, 23 are erected is smaller than the width dimension of the flange portion 4.

[0041] Meanwhile, notches 19, 19 are formed at predetermined positions on both ends in the width direction of the flange portion 4 of the metal fitting body 2. These notches 19, 19 are formed so as to engage with the abutment pieces 23, 23 of the abutment member 20.

[0042] The abutment member 20 is assembled to the metal fitting body 2 so as to be in contact with the underside of the flange portion 4. When the abutment member 20 is assembled to the metal fitting body 2, the abutment pieces 23, 23 of the abutment member 20 protrude from the upper surface of the flange portion 4, as shown in FIG. 12(b). Therefore, the abutment pieces 23, 23 protruding from the upper surface of the flange portion 4 become the abutment portions 6 that abut against the vertical plate portions 11 of the cross member 10. Then, a hanging bolt 9 is attached and a nut 15 is fastened to the underside of the abutment member 20, thereby fixing the abutment member 20 to the flange portion 4.

[0043] In the hanging bolt support bracket 1 of this embodiment, when the bracket body 2 is attached to the cross member 10, the abutment member 20 can be attached in a state where it is separated from the bracket body 2. In other words, since there is no abutment portion 6 that protrudes from the upper surface of the flange portion 4, the cross member 10 can be easily positioned between the pair of flange portions 3, 4 of the bracket body 2. After the bracket body 2 is attached to the cross member 10, the abutment member 20 can be attached to the flange portion 4 that protrudes further outward from the vertical plate portion 11 of the cross member 10, thereby allowing the abutment portion 6 to abut against the vertical plate portion 11.

[0044] Therefore, the suspension bolt support bracket 1 of this embodiment has the advantage that it can be easily attached to the cross member 10 without needing to widen the gap between the pair of flange portions 3, 4. Furthermore, the suspension bolt support bracket 1 of this embodiment is attached to the cross member 10 with the abutment portion 6 abutting against the vertical plate portion 11 of the cross member 10, so that it can be appropriately prevented from changing its posture or moving in the event of an earthquake.

[0045] (Variation) Although the preferred embodiments of the present invention have been described above, the present invention is not limited to those described in the above embodiments. In other words, the present invention includes various modifications of the above embodiments.

[0046] For example, in the above embodiment, the cross member 10 to which the suspension bolt support bracket 1 is attached is formed of a steel material such as a channel steel. Channel steel includes lip channel steel and light channel steel. Furthermore, steel materials to which the suspension bolt support bracket 1 can be attached include, in addition to channel steel, I-beams and angle steel (angle iron), for example. However, in the case of angle steel, the suspension bolt support bracket 1 takes the form shown in FIG. 13.

[0047] The suspension bolt support bracket 1 shown in Figure 13 is attached to a cross member 10 (angle iron) that is arranged so that the horizontal plate portion 12 is located above the vertical plate portion 11. The bracket body 2 of this suspension bolt support bracket 1 has a pair of flange portions 3, 4 that are parallel to each other, and the base ends of the pair of flange portions 3, 4 are connected by a connecting portion 5 that extends diagonally. The suspension bolt support bracket 1 shown in Figure 13 is provided with a contact portion 6 on the upper surface of the lower flange portion 4, which makes it possible to prevent the bracket from changing its posture or moving in the event of an earthquake. [Explanation of symbols]

[0048] 1...hanging bolt support bracket, 2...bracket body, 3, 4...flange portion, 5...connecting portion, 6...contact portion, 7, 8...mounting hole, 9...hanging bolt, 10...cross member, 15...nut (fastening member).

Claims

1. A hanging bolt support bracket attached to a horizontal member having a horizontal plate portion extending horizontally from the upper end or lower end of a vertical plate portion, The horizontal plate portion is attached to the horizontal member from the tip side thereof, and has a pair of flange portions that protrude parallel to each other toward the outside of the vertical plate portion while being joined to the upper and lower ends of the vertical plate portion by being attached to the horizontal member, The pair of flanges have mounting holes formed at their tips for mounting suspension bolts. A suspension bolt support fitting, characterized in that at least the lower flange portion of the pair of flange portions is provided with an abutment portion that abuts against the outer surface of the vertical plate portion.

2. 2. The suspension bolt support fixture according to claim 1, wherein the abutment portion is fixed to at least the upper surface of the lower flange portion.

3. The pair of flange portions have a predetermined width in the longitudinal direction of the cross member, 3. The suspension bolt support bracket according to claim 1, wherein the abutment portions protrude outward from at least both widthwise ends of the lower flange portion and abut against the outer surface of the vertical plate portion.

4. 4. The suspension bolt support bracket according to claim 3, wherein the abutting portions are bent upward in portions that protrude outward from both widthwise ends of the lower flange portion.

5. The cross member is a channel steel, 4. The suspension bolt support fixture according to claim 3, wherein the pair of flange portions are integrally formed with a fixture body formed in a U-shape.

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