Mounting bracket for suspension bolts

Abstract

To improve workability while ensuring temporary fixing of a hanging bolt, etc.SOLUTION: A bolt mounting metal fitting 100 comprises: a bolt pressing board 110; fixing members such as hanging bolts and vibration stop bolts (hanging bolt fixing member 120, vibration stop bolt fixing member 130), a compression coil spring 160 that presses the bolt pressing board 110; and a connection bolt 140 that connects the bolt pressing board 110, the fixing members and the compression coil spring 160. The bolt pressing board 110 is provided with a guide part 112 having a conical shape or the like for guiding hanging bolts or the like. The compression coil spring 160 presses vibration stop bolts or the like to temporarily fix them.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a bolt mounting fixture used, for example, to attach an anti-vibration bolt for suppressing vibrations caused by earthquakes, etc., to a hanging bolt that suspends equipment, etc. from the ceiling surface of a structure. [Background technology]

[0002] Anti-vibration devices are installed to prevent damage or falling of equipment (cable racks, equipment, and steel materials on which piping is mounted) during earthquakes. Anti-vibration metal fittings have been devised to connect diagonal members to hanging members for supporting the load of the equipment and to install anti-vibration devices (in the axial direction and perpendicular to the axis) (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-20479 A Summary of the Invention [Problem to be solved by the invention]

[0004] With anti-vibration fittings such as those described above, if the force used to temporarily fasten the suspension bolts or anti-vibration bolts is too weak, it becomes difficult to achieve reliable temporary fastening, whereas if the force used to temporarily fasten them is too strong, workability tends to decrease.

[0005] The present invention has been made in consideration of the above points, and has an object to easily improve workability while reliably temporarily fastening suspension bolts and the like. [Means for solving the problem]

[0006] In order to achieve the above objectives, The present invention relates to A suspension bolt anti-vibration bolt mounting bracket for connecting a first bolt and a second bolt which are suspension bolts or anti-vibration bolts, A bolt pressing base plate; a first and a second bolt fixing member each provided on one side or the other side of the bolt pressing base plate, the first and second bolt fixing members each having a bottom wall portion, a pair of side wall portions opposed to each other and erected closer to the bolt pressing base plate than the bottom wall portion, and a connecting side wall portion connecting the pair of side wall portions; a compression coil spring provided between the bolt pressing base plate and the second bolt fixing member; a connecting bolt that is inserted through a bolt hole formed in the bolt pressing base plate, the bottom wall portion of the first bolt fixing member, and the bottom wall portion of the second bolt fixing member, and through which the compression coil spring is fitted; Equipped with The pair of opposing side wall portions of the first and second bolt fixing members are formed with engagement recesses into which the first or second bolt fits, the bolt pressing base plate is provided with a guide portion having a surface that is a distance from the axis of the connecting bolt toward the second bolt fixing member at least near a corner between the pair of side wall portions and the connecting side wall portion of the first bolt fixing member, The guide portion has an intersection line with a plane perpendicular to the axis of the connecting bolt or a tangent to the intersection line inclined with respect to the pair of side wall portions and the connecting side wall portion. It is characterized by:

[0007] This makes it possible to concentrate the force used to press a hanging bolt or the like between the first bolt fixing member and the bolt pressing base plate at a corner of the side wall of the first bolt fixing member, making it easier to press the bolt in, thereby easily improving workability. Effect of the Invention

[0008] According to the present invention, it is possible to easily improve workability while reliably fastening the suspension bolts and the like. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view of a bolt mounting fixture according to a first embodiment. [Diagram 2] FIG. 2 is a plan view of the bolt mounting fixture of the first embodiment. [Diagram 3] FIG. 3 is a cross-sectional view taken along line III-III in FIG. [Figure 4] FIG. 11 is a front view of a bolt mounting fixture of a second embodiment. [Diagram 5] FIG. 11 is a front view of a bolt mounting fixture of a third embodiment. [Figure 6] 4 is a cross-sectional view equivalent to FIG. 3 of a modified bolt mounting fitting. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In each of the following embodiments, components having the same functions as those in other embodiments will be denoted by the same reference numerals and will not be described.

[0011] (Embodiment 1) As shown in Figures 1 to 3, the bolt mounting bracket 100 of embodiment 1, which connects a suspension bolt A to an anti-vibration bolt B, is configured by sandwiching a bolt pressing base plate 110 between a suspension bolt fixing member 120, a compression coil spring 160, and an anti-vibration bolt fixing member 130, which are connected by a connecting bolt 140 and a nut 150.

[0012] The suspension bolt fixing member 120 and the anti-vibration bolt fixing member 130 are formed as a common member, and have substantially rectangular bottom wall portions 121, 131 in which bolt holes 122, 132 are formed, and side wall portions 133 having a square cross section erected from each side of the bottom wall portions 121, 131. Of the side wall portions 123, 133, a pair of opposing side wall portions 133 are formed with engagement recesses 124, 134 into which the suspension bolt A or the anti-vibration bolt B fits.

[0013] The bolt pressing base plate 110 is provided with a conical guide portion 112 that expands toward the anti-vibration bolt fixing member side (upward in FIG. 1) at a position corresponding to the side wall portion 133 that connects a pair of side wall portions 133 in which the engagement recesses 124 of the hanging bolt fixing member 120 are formed. The bolt pressing base plate 110 is also provided with claw portions 113 and 114 that are bent outwardly of the side wall portions 123 of the hanging bolt fixing member 120, so that the bolt pressing base plate 110 can be positioned relative to the hanging bolt fixing member 120 and can be easily assembled. A bolt hole 111 is provided near the center of the bolt pressing base plate 110. The bolt hole 111 is formed as an elongated hole that is long in the left-right direction in FIG. 1, and the vicinity of the guide portion 112 of the bolt pressing base plate 110 can be tilted in a direction away from the hanging bolt fixing member 120.

[0014] Here, the axial height of the connecting bolt 140 in the guide portion 112 is not particularly limited, but if it is set to a height at which the anti-vibration bolt B abuts when it rotates around the axial center of the connecting bolt 140, the rotational position of the anti-vibration bolt B can be easily regulated.

[0015] Furthermore, the guide portion 112 of the bolt pressing base plate 110 is not limited to a conical surface shape, and may be a polygonal shape (pyramidal surface shape), chamfered shape, etc., and at least has a surface near the corner between a pair of side wall portions 123 in the hanging bolt fixing member 120 and a side wall portion 123 (connecting side wall portion) connecting the pair of side wall portions 123, where the distance from the axis of the connecting bolt 140 increases toward the anti-vibration bolt fixing member 130, and the intersection line (or tangent to the intersection line) between that surface and a plane perpendicular to the axis of the connecting bolt 140 is inclined with respect to the pair of side wall portions 123 and the connecting side wall portion. By configuring it in this manner, when temporarily fastening the hanging bolt A in the engagement recess 124 of the hanging bolt fixing member 120, the force used to press the hanging bolt A between the hanging bolt fixing member 120 and the bolt pressing base plate 110 can be concentrated on the corners of the side wall portion 123 of the hanging bolt fixing member 120, making it easier to press the hanging bolt A in, and this easily improves workability.

[0016] The compression coil spring 160 normally brings the bolt pressing base plate 110 into contact with the hanging bolt fixing member 120 by its biasing force, closing the engagement recess 124, and by swinging the bolt pressing base plate 110, the engagement recess 124 is opened, allowing the hanging bolt A to be fitted in and temporarily fixed. The compression coil spring 160 is formed in a conical spiral shape with a larger winding diameter on the anti-bolt fixing member 130 side than on the bolt pressing base plate 110 side, and the outer diameter and spacing of the wire are set to a size such that the compression coil spring 160 comes into contact with the outer periphery of the anti-bolt B and presses it toward the back of the engagement recess 134 of the anti-bolt fixing member 130, ensuring contact of the wire of the compression coil spring 160 with the outer periphery of the anti-bolt B, making it easy to temporarily fix the anti-bolt B.

[0017] The above-mentioned bolt mounting fixture 100 is used by appropriately tightening the nut 150 (or the connecting bolt 140) so that the gap between the bolt pressing base plate 110 and the side wall portion 133 of the anti-vibration bolt fixing member 130 is wide enough for the anti-vibration bolt B to pass through, and the urging force of the compression coil spring 160 presses the bolt pressing base plate 110 against the side wall portion 123 of the hanging bolt fixing member 120 with a predetermined pressing force. In this state, when the side surface of the hanging bolt is pressed against the gap or valley between the edge portion (particularly the corner portion of the edge) of the side wall portion 123 of the hanging bolt fixing member 120 and the conical surface of the guide portion 112 of the bolt pressing base plate 110, the bolt pressing base plate 110 is swung so that the gap between the bolt pressing base plate 110 and the hanging bolt fixing member 120 increases, and the hanging bolt A is fitted into the engagement recess 124 of the hanging bolt fixing member 120 and pressed by the bolt pressing base plate 110 to easily temporarily secure it.

[0018] Next, when the anti-vibration bolt B is pressed between the bolt pressing base plate 110 and the side wall portion 133 of the anti-vibration bolt fixing member 130, the wire of the compression coil spring 160 abuts against the outer periphery of the anti-vibration bolt B, making it easy to temporarily fix the anti-vibration bolt B.

[0019] Therefore, when nut 150 is tightened, the hanging bolt fixing member 120, the bolt pressing base plate 110, and the anti-vibration bolt fixing member 130 are brought into close contact, making it easy to securely fix the hanging bolt A and the anti-vibration bolt B fitted into the engagement recesses 124, 134 of the hanging bolt fixing member 120 and the anti-vibration bolt fixing member 130.

[0020] As described above, the guide portion 112 is provided on the bolt pressing base plate 110, so that the suspension bolt A can be easily temporarily fixed. On the other hand, the compression coil spring 160 is formed in a conical spiral shape, and the outer diameter and interval of the wire are set to a size such that the compression coil spring 160 presses the anti-vibration bolt B toward the back of the engagement recess 134 of the anti-vibration bolt fixing member 130, so that the anti-vibration bolt B can be easily temporarily fixed. Moreover, since the compression coil spring 160 is provided between the bolt pressing base plate 110 and the anti-vibration bolt fixing member 130, the force required to temporarily fix the suspension bolt A and the force required to temporarily fix the anti-vibration bolt B can be set with a relatively high degree of freedom. Therefore, it is easy to improve the workability while facilitating reliable temporary fixing.

[0021] In the above example, the hanging bolt A and the anti-vibration bolt B are fixed to the hanging bolt fixing member 120 and the anti-vibration bolt fixing member 130, but various types of bolts can be set to be fixed to each of them.

[0022] In addition, the side wall portion 133 of the hanging bolt fixing member 120, etc., has a rectangular cross-sectional shape in the example shown, but is not limited thereto, and may have a circular, triangular, U-shaped or other cross-sectional shape, as long as at least a side wall portion in which an engagement recess is formed is provided.

[0023] (Embodiment 2) As shown in Fig. 4, the bolt mounting fixture 100 of the second embodiment is provided with components common to or similar to the bolt pressing base plate 110, compression coil spring 160, and anti-vibration bolt fixing member 130 on the bottom wall portion 121 side of the suspension bolt fixing member 120, so that a total of two anti-vibration bolts B and C can be connected. Here, in the example of Fig. 4, an example is shown in which the guide portion 112 of the bolt pressing base plate 110 is formed in a sloping shape (chamfered shape), but this is not limited to this, and it may be formed in a conical shape or a polygonal shape as in the first embodiment. Also, an example is shown in which the claw portion 114 of the bolt pressing base plate 110 is omitted, but it may be provided in the same way as in the first embodiment. When configured in this manner, the sum of the distance between the anti-vibration bolt fixing member 130 for temporarily fixing the anti-vibration bolt B and the adjacent bolt pressing base plate 110 and the distance between the anti-vibration bolt fixing member 130 for temporarily fixing the anti-vibration bolt C and the adjacent bolt pressing base plate 110 should be set so that it can open greater than the diameter of the anti-vibration bolts B and C.

[0024] Even in this configuration, the suspension bolt A and the anti-vibration bolts B and C can be temporarily fastened and connected in the same manner as in the first embodiment, and the same effects can be obtained.

[0025] As described above, the bolt pressing base plate 110, compression coil spring 160, and anti-vibration bolt fixing member 130 for connecting the anti-vibration bolt C do not necessarily have to be the same as the members for connecting the anti-vibration bolt B, but by doing so, the number of types of members can be reduced. Also, the bolt pressing base plate 110 does not necessarily have to have a guide portion 112, but by providing it in a direction that expands in the direction away from the anti-vibration bolt fixing member 130 (upward in FIG. 4) as shown in FIG. 4, the temporary fixing of the anti-vibration member C can be made easier.

[0026] (Embodiment 3) 5, the bolt mounting fixture 100 of the third embodiment, like the second embodiment, is provided with additional components common to the bolt pressing base plate 110, compression coil spring 160, and anti-vibration bolt fixing member 130 on the bottom wall portion 121 side of the suspension bolt fixing member 120, so that a total of two anti-vibration bolts B and C can be connected. However, the orientations of the bolt pressing base plate 110, compression coil spring 160, and anti-vibration bolt fixing member 130 are opposite to those of the second embodiment.

[0027] Even in this configuration, the suspension bolt A and the anti-vibration bolts B and C can be temporarily fastened and connected in the same manner as in the first embodiment, and similar operational effects can be obtained.

[0028] (Modification) In order to apply a biasing force that causes the bolt pressing base plate 110 to abut against the suspension bolt fixing member 120 and presses the anti-vibration bolt B toward the back of the engagement recess 134 of the anti-vibration bolt fixing member 130, it is not limited to the compression coil spring 16, but may also be a leaf spring 170 bent into a C-shape as shown in Fig. 6. In the example shown in the figure, one end of the leaf spring 170 abuts against the bottom wall portion 131 of the anti-vibration bolt fixing member 130 and the middle portion of the leaf spring 170 abuts against the bolt pressing base plate 110, thereby temporarily fixing the suspension bolt A, while the other end of the leaf spring 170 abuts against the anti-vibration bolt B, thereby temporarily fixing the anti-vibration bolt B.

[0029] In the above example, the suspension bolt A is fixed by the suspension bolt fixing member 120, and the anti-vibration bolt B is fixed by the anti-vibration bolt fixing member 130, but the bolts that are fixed may be reversed. That is, the names of the fixing members are given for convenience, and the anti-vibration bolt B may be fixed by the suspension bolt fixing member 120, and the suspension bolt A may be fixed by the anti-vibration bolt fixing member 130, or each bolt may be fixed by any fixing member. Also, the anti-vibration bolt C may be fixed by any fixing member. [Explanation of symbols]

[0030] 100 volt mounting bracket 110 Bolt Press Board 111 Bolt hole 112 Guide part 113·114 Claw part 120 Hanging bolt fixing member 121·131 Bottom wall 122·132 Bolt holes 123·133 Side wall 124·134 Engagement recess 130 Anti-vibration bolt fixing member 140 Connecting bolt 150 Nut 160 Compression coil spring 170 Leaf spring

Claims

1. A suspension bolt anti-vibration bolt mounting bracket for connecting a first bolt and a second bolt which are suspension bolts or anti-vibration bolts, A bolt pressing base plate; a first and a second bolt fixing member each provided on one side or the other side of the bolt pressing base plate, the first and second bolt fixing members each having a bottom wall portion, a pair of side wall portions opposed to each other and erected closer to the bolt pressing base plate than the bottom wall portion, and a connecting side wall portion connecting the pair of side wall portions; a compression spring provided between the bolt pressing base plate and the second bolt fixing member; a connecting bolt inserted through a bolt hole formed in the bolt pressing base plate, the bottom wall portion of the first bolt fixing member, and the bottom wall portion of the second bolt fixing member; Equipped with The pair of opposing side wall portions of the first and second bolt fixing members are formed with engagement recesses into which the first or second bolt is fitted, The bolt pressing base plate is provided with a guide portion having a surface that is a distance from the axis of the connecting bolt toward the second bolt fixing member at least in the vicinity of a corner between the pair of side wall portions and the connecting side wall portion of the first bolt fixing member, the guide portion has a conical surface shape expanding toward the second bolt fixing member side, and a tangent to a line of intersection with a plane perpendicular to an axis of the connecting bolt is inclined with respect to the pair of side wall portions and the connection side wall portion, The compression spring is constituted by a compression coil spring or a leaf spring, and abuts against the outer periphery of the second bolt to press the second bolt toward the back of the engagement recess of the side wall portion of the second bolt fixing member. A mounting bracket for an anti-vibration bolt for a suspension bolt.

2. The anti-vibration bolt mounting bracket for a suspension bolt according to claim 1, The anti-vibration bolt mounting bracket for a suspension bolt is characterized in that the first and second bolt fixing members are a common member.

3. The anti-vibration bolt mounting bracket for a suspension bolt according to claim 1, The bolt hole of the bolt pressing base plate is formed as an elongated hole so that the vicinity of the guide portion of the bolt pressing base plate can be tilted in a direction away from the first bolt fixing member.

4. A mounting bracket for a suspension bolt and a vibration-proof bolt for connecting a first bolt and a second bolt which are a suspension bolt or a vibration-proof bolt, A bolt pressing base plate; a first and a second bolt fixing member each provided on one side or the other side of the bolt pressing base plate, the first and second bolt fixing members each having a bottom wall portion, a pair of side wall portions opposed to each other and erected closer to the bolt pressing base plate than the bottom wall portion, and a connecting side wall portion connecting the pair of side wall portions; a compression spring provided between the bolt pressing base plate and the second bolt fixing member; a connecting bolt inserted through a bolt hole formed in the bolt pressing base plate, the bottom wall portion of the first bolt fixing member, and the bottom wall portion of the second bolt fixing member; Equipped with The pair of opposing side wall portions of the first and second bolt fixing members are formed with engagement recesses into which the first or second bolt is fitted, The bolt pressing base plate is provided with a guide portion having a surface that is a distance from the axis of the connecting bolt toward the second bolt fixing member at least in the vicinity of a corner between the pair of side wall portions and the connecting side wall portion of the first bolt fixing member, the guide portion has an intersection line with a plane perpendicular to an axis of the connecting bolt or a tangent to the intersection line inclined with respect to the pair of side wall portions and the connecting side wall portion, Furthermore, an anti-vibration bolt mounting bracket for a suspension bolt is characterized in that an additional second bolt fixing member which is a common member with the first bolt fixing member or the second bolt fixing member, an additional compression spring which is a common member with the compression spring, and an additional bolt pressing base plate are provided on the opposite side of the first bolt fixing member to the bolt pressing base plate.

5. The anti-vibration bolt mounting bracket for a hanging bolt according to claim 4, A vibration-proof bolt mounting bracket for a suspension bolt, characterized in that the additional second bolt fixing member, the additional compression spring, and the additional bolt pressing plate are provided in that order on the opposite side of the first bolt fixing member to the bolt pressing plate, and the additional second bolt fixing member has a bottom wall portion facing toward the bolt pressing plate, and the additional bolt pressing plate has a guide portion facing toward the opposite side of the bolt pressing plate.

6. The anti-vibration bolt mounting bracket for a hanging bolt according to claim 4, The additional bolt pressing plate, the additional compression spring, and the additional second bolt fixing member are provided, in that order, on the opposite side of the first bolt fixing member to the bolt pressing plate, the additional bolt pressing plate having a guide portion facing toward the bolt pressing plate, and the additional second bolt fixing member having a bottom wall portion facing away from the bolt pressing plate.

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