Suspension bolt reinforcement gear

Abstract

To provide a suspension bolt reinforcement gear that enhances earthquake resistance where air conditioning equipment and the like is suspended from a ceiling.SOLUTION: A suspension bolt reinforcement gear 4 is installed at designated positions on multiple suspension bolts 1 that are vertically parallelly arranged for suspending suspended subject equipment 2, comprising: a reinforcement member 4a that is attached to each suspension bolt and consists of a vertical part and a lateral part 4a2; and a connection member 4b that connects two of the reinforcement members to each other. The reinforcement member consists of two L-shape members that are unified being fixed on their vertical arms with each other, the unified two vertical arms forming the vertical part while the two horizontal arms of the two L-shape members forming a lateral part 4a2. The two horizontal arms form a designated angle θ between them in a plan view. The connection member connects the lateral parts of two of the reinforcement members with each other, comprising a vertical reinforcement fitting that connects the two reinforcement members that are attached to each suspension bolt at two positions, i.e. upper and lower points of the suspension bolt, and has strength greater than that of specific strength of the single suspension bolt.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a reinforcing tool for a suspension bolt used, for example, to suspend and install air conditioning equipment or the like from the ceiling of a building.

Background Art

[0002] Conventionally, the following techniques are known as techniques related to reinforcing tools for suspension bolts.

[0003] The support device is connected to a mounting portion provided so as to project laterally on a pair of parallel side surfaces of the ceiling suspension, and supports the ceiling suspension. This support device includes a first member connected to a pair of mounting portions that project laterally on one side surface of the ceiling suspension, a second member connected to a pair of mounting portions that project laterally on the other side surface, and a connecting member that connects the first member and the second member to each other in a state where the first member is in close contact with one side surface and the second member is in close contact with the other side surface.

[0004] By such a technique, the seismic resistance against lateral sway on the side surface of a ceiling suspension where it is difficult to attach a brace is improved (see Patent Document 1).

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, with such conventional reinforcing tools, the reinforcement of the suspension bolts was not sufficient against lateral sway and vertical sway caused by an earthquake.

[0007] The object of the present invention is to provide a suspension bolt reinforcing tool with enhanced seismic resistance in consideration of the problems of the conventional reinforcing tools described above.

Means for Solving the Problems

[0008] The first aspect of the present invention is a suspension bolt reinforcing tool attached to a predetermined position of a plurality of vertically parallel suspension bolts for suspending a device to be suspended, characterized by comprising a reinforcing member composed of a vertical portion and a horizontal portion joined to each suspension bolt, and a connecting member connecting two reinforcing members to each other.

[0009] The second aspect of the present invention is the reinforcing member is formed by fixing two L-shaped members to each other at their longitudinal sides, two of the longitudinal sides form the vertical portion, two of the horizontal sides of the two L-shaped members form the horizontal portion, and the two horizontal sides form a predetermined angle with each other in plan view, the connecting member is the suspension bolt reinforcing tool of the first aspect of the present invention that connects the horizontal portions of two of the reinforcing members to each other.

[0010] The third aspect of the present invention is the suspension bolt reinforcing tool of the second aspect of the present invention, wherein the upper end of the suspension bolt is connected to a ceiling or a suspension platform attached to the ceiling, and the lower end is connected to the device to be suspended.

[0011] The fourth aspect of the present invention is the suspension bolt reinforcing tool of the third aspect of the present invention, wherein the connecting member has greater flexibility than the reinforcing member.

[0012] The fifth aspect of the present invention is a vertical reinforcing tool that connects two of the reinforcing members joined to two predetermined upper and lower positions of each one of the suspension bolts to each other, and has a strength stronger than that of the predetermined one suspension bolt, and is provided in the suspension bolt reinforcing tool of the second aspect of the present invention.

[0013] The sixth aspect of the present invention is The lower end of the vertical portion of the upper reinforcing member is arranged upward, and the lower end of the vertical portion of the lower reinforcing member is arranged downward. The vertical reinforcement tool is the suspension bolt reinforcement tool of the fifth aspect of the present invention that connects the intersection of the vertical and horizontal portions of the upper reinforcing member and the intersection of the vertical and horizontal portions of the lower reinforcing member.

[0014] The seventh aspect of the present invention is A reinforcing brace is attached between the plurality of suspension bolts, the reinforcing member and the connecting member are arranged below the reinforcing brace, the upper end of the reinforcing brace is connected to the suspension bolt, and the lower end of the reinforcing brace is connected to the horizontal portion of the lower reinforcing member, which is the suspension bolt reinforcement tool of the fourth aspect of the present invention.

[0015] The eighth aspect of the present invention is The reinforcing member and the connecting member are also attached above the portion of the suspension bolt where the reinforcing brace is attached, the upper end of the reinforcing brace is connected to the horizontal portion of the upper reinforcing member instead of the suspension bolt, and the lower end of the reinforcing brace is connected to the horizontal portion of the lower reinforcing member, which is the suspension bolt reinforcement tool of the seventh aspect of the present invention.

[0016] The ninth aspect of the present invention is A horizontal portion is also formed at the lower end of the vertical portion of the reinforcing member, and the connecting member connects the horizontal portions at the lower ends of the two reinforcing members, which is the suspension bolt reinforcement tool of the fourth aspect of the present invention.

[0017] The tenth aspect of the present invention is At least two reinforcing members are attached to one suspension bolt, and the lower ends of the vertical portions of two of the reinforcing members are attached in a state of facing and abutting each other, which is the suspension bolt reinforcement tool of the fourth aspect of the present invention.

[0018] The eleventh aspect of the present invention is The suspension bolt is a suspension bolt reinforcing tool according to any one of the second to tenth aspects of the present invention, which is joined to a concave groove portion formed outside the portion where the two L-shaped members are fixed to each other in their longitudinal sides.

Effect of the Invention

[0019] According to the present invention, a suspension bolt reinforcing tool with higher seismic resistance can be realized both in the horizontal direction and in the vertical direction.

Brief Description of the Drawings

[0020]

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Embodiments for Carrying Out the Invention

[0021] With reference to the drawings, embodiments of the present invention will be described in detail

[0022] FIGS. 1 to 40 are drawings such as front views showing examples of the suspension bolt reinforcing tool according to an embodiment of the present invention. An air conditioning device is suspended from the suspension bolt reinforced by this suspension bolt reinforcing tool

[0023] FIG. 1 is a front view showing a state in which an air conditioning device 2 is suspended by four suspension bolts 1 connected to a ceiling, and FIG. 2 is a plan view thereof

[0024] In FIGS. 1 and 2, the lower part 2a of the air conditioner 2 is suspended by the lower ends 1a of the four suspension bolts 1. Reinforcing braces 3 are respectively attached between the upper parts 1b of the four suspension bolts 1.

[0025] Furthermore, a suspension bolt reinforcement 4 is attached to a predetermined position of the suspension bolt 1. In this example, it is attached below the above-mentioned reinforcing brace 3 and at a position slightly above the air conditioner 2.

[0026] This suspension bolt reinforcement 4 is composed of a reinforcing member 4a and a connecting member 4b that connects the two reinforcing members 4a, 4a.

[0027] As shown in FIGS. 3 to 6, this reinforcing member 4a is composed of a vertical part 4a1 and a horizontal part 4a2. The reinforcing member 4a is formed by fixing the vertical sides of the two L-shaped members 40, 40 to each other. The two vertical sides form the vertical part 4a1, and the horizontal side forms the horizontal part 4a2. The two horizontal sides form an angle θ in plan view.

[0028] This reinforcing member 4a will be further specifically described. FIG. 3 is a view seen from the outside, FIG. 4 is a view seen from the inside, FIG. 5 is a view seen from above, and FIG. 6 is a view seen from below.

[0029] This L-shaped member 40 is made of an elongated flat plate. At the lower end 4a12 of the vertical part 4a1 of the vertical side, a semi-circular lower end attachment part 41 having a hole 41a is formed. Also, a hole 40a is formed near the base of the horizontal part 4a2 which is the horizontal side.

[0030] Furthermore, the upper end edge of the horizontal part 4a2 is bent horizontally to form a horizontal plate 42, and the tip edge of the horizontal part 4a2 is bent vertically to form a vertical plate 43. A hole 43a is formed in this vertical plate 43.

[0031] In addition, the portions where the vertical sides of the two L-shaped members 40 are fixed to each other are fixed to each other by the edge portions 4a11 that are bent approximately 90 degrees slightly inward as shown in FIGS. 3 to 6. Therefore, a concave groove portion 44 is formed on the outside of the fixed portion.

[0032] The suspension bolt 1 is placed in contact with the concave groove portion 44, and the reinforcing member 4a is firmly joined to the suspension bolt 1 by a pressing metal fitting 45.

[0033] That is, as described above, a semi-circular lower end attachment portion 41 having a hole 41a is formed at the lower end 4a12 of the vertical portion 4a1 of the vertical side. The pressing metal fitting 45 is applied thereto from the outside and fixed with a bolt 46. Also, the pressing metal fitting 45 is applied from the outside using the hole 40a formed near the base of the horizontal portion 4a2 which is the horizontal side and fixed with a bolt 46. In this way, the reinforcing member 4a is fixed at a predetermined position of the suspension bolt 1.

[0034] The presence of such a concave groove portion 44 makes it easier to stop the pressing metal fitting 45. That is, in a simple corner portion without a recess, in order to bring the suspension bolt 1 to the outside, it is necessary to fasten a fitting for stopping from the inside, which has the drawback of being difficult to construct. In this example, since there is a recess in the corner portion, the construction becomes easy.

[0035] Note that FIG. 7(A) is an example of a reinforcing member 4a formed by die-cutting and folding a single steel plate into a left and right L-shape. A vertical plate 43 is also formed. FIG. 7(B) is an example in which the above-described horizontal plate 42 is added to the reinforcing member 4a of (A). FIG. 7(C) is an example in which a recess is formed by folding in the center, corresponding to the reinforcing member 4a described above. In the above-described example, the two L-shaped members 40, 40 are fixed to each other by welding or the like at the vertical sides, but in the example of FIG. 7, it is formed by folding a substantially single steel plate. By doing so, the strength becomes higher. Furthermore, since the reinforcing member 4a of (C) has a concave groove portion 44, it has a higher strength against bending than the reinforcing member of (B). Also, accordingly, the plate thickness can be made thinner, the weight can be reduced, and weight reduction can be achieved.

[0036] The reinforcing member of the present invention is configured by fixing two L-shaped members to each other along their longitudinal sides. The concept of the reinforcing member includes a reinforcing member formed by bending a single steel plate as described with reference to FIG. 7.

[0037] Furthermore, as shown in FIGS. 1 and 2, the connecting member 4b connects the horizontal portions of the two reinforcing members 4a, 4a. That is, both ends 4b1 of this connecting member 4b are inserted into the holes 43a of the vertical plates 43 of the L-shaped member 40 described above and fixed with nuts (see FIG. 7 etc.).

[0038] This connecting member 4b is rod-shaped but has greater flexibility than the reinforcing member 4a. Therefore, when the air conditioner 2 sways horizontally during an earthquake or the like, the suspension bolt 1 sways left and right, but the reinforcing member 4a having the L-shaped member 40 as a component suppresses the horizontal sway together with the connecting member 4b. At that time, the connecting member 4b has flexibility, and due to the deformation force at the connecting portion with the reinforcing member 4a, the reinforcing member 4a allows the horizontal sway of the air conditioner 2 to some extent. That is, by having a certain degree of flexibility, it becomes a flexible structure and as a result, the earthquake resistance is enhanced.

[0039] FIGS. 8 to 14 show examples of the suspension bolt reinforcement tool 4 using the reinforcing member 4a and the connecting member 4b of FIG. 7. They are respectively a front view and a perspective view.

[0040] Also, FIGS. 15 to 28 are examples of using the reinforcing member 4a and the connecting member 4b of FIG. 7 for the air conditioner 2, and they are respectively a front view and a perspective view.

[0041] FIGS. 29 to 36 are modified examples of the reinforcing member 4a, and in the example of the figure, there is no concave strip portion 44, and an example in which the suspension bolt 1 is arranged inside is shown. That is, the suspension bolt 1 is arranged inside, and the suspension bolt 1 is fixed to the downward attachment portion 47 bent inward at the lower end 4a12 of the reinforcing member 4a. Furthermore, the connecting member 4b is connected to the end portion 4a21 bent inward of the horizontal portion 4a2 of the reinforcing member 4a.

[0042] Figs. 37 to 40 are application examples of the reinforcing member 4a and the connecting member 4b in Figs. 29 to 36, and are views of the suspension bolt reinforcement tool 4 composed of the reinforcing member 4a and the connecting member 4b corresponding to the case where there are four suspension bolts 1.

[0043] Figs. 41 to 44 are examples where the suspension bolt reinforcement tool 4 is joined to the suspension bolt 1 connected to the suspension platform 49, and are application examples of the reinforcing member 4a in Figs. 29 to 36.

[0044] Fig. 45 shows another embodiment of the present invention, in which the suspension bolt reinforcement tool 4 is also added on the reinforcing brace 3. This makes it possible to further prevent lateral sway.

[0045] Figs. 46 to 54 show still another embodiment of the present invention, in which the suspension bolt reinforcement tool 4 in the examples of Figs. 3 to 6 is applied, and furthermore, the relationship with the reinforcing brace 3 is strengthened.

[0046] That is, the horizontal portion 4a2 of the reinforcing member 4a has a trapezoidal shape, and the lower end 3a of the reinforcing brace 3 is fixed thereto. That is, the upper end of the reinforcing brace 3 is connected to the suspension bolt 1, but the lower end 3a is not connected to the suspension bolt 1 and is fixed to the horizontal portion 4a2. Thereby, the suspension bolt 1, the reinforcing brace 3, and the suspension bolt reinforcement tool 4 are integrated, and the seismic resistance is further enhanced.

[0047] Fig. 55 is a modified example of Figs. 46 to 54, and is an example in which the suspension bolt reinforcement tool 4 is also attached to the upper side of the reinforcing brace 3. That is, in this example, both the upper end side and the lower end side of the reinforcing brace 3 are fixed to the horizontal portion 4a2 of the suspension bolt reinforcement tool 4.

[0048] Fig. 56 shows another embodiment of the present invention, in which the structure of the reinforcing member 4a is different from other examples. That is, a second horizontal portion 4a2' is also provided on the lower end side of the vertical portion 4a1, and the second connecting member 4b connects between the second horizontal portion 4a2 of the corresponding other reinforcing member 4a. Thereby, the seismic resistance is further enhanced.

[0049] FIG. 57 shows a modified example of the example of FIG. 56, in which a steel plate panel 50 is connected between the first connecting member 4b and the second connecting member 4b. Further, the seismic resistance is enhanced.

[0050] FIGS. 58 to 60 show the case of suspending a duct 51 or the like, and the number of suspension bolts 1 is two. Note that the present invention can also be applied when the number of suspension bolts 1 is three. If there are a plurality of them, the number is arbitrary.

[0051] FIG. 61 shows another embodiment of the present invention, in which at least two reinforcing members 4a are attached to one suspension bolt 1, and the lower ends 4a12 of the vertical portions 4a1 of two of the reinforcing members 4a are attached in a state of facing and abutting each other.

[0052] In the example of FIG. 61, three reinforcing members 4a are provided. The reinforcing member 4a at the uppermost position and the reinforcing member 4a in the middle show the features of this embodiment.

[0053] That is, the lower end 4a12 of the vertical portion 4a1 of the uppermost reinforcing member 4a faces downward, while the lower end 4a12 of the vertical portion 4a1 of the middle reinforcing member 4a faces upward. Further, the lower end 4a12 of the uppermost vertical portion 4a1 and the lower end 4a12 of the middle vertical portion 4a1 are fixed at positions facing and abutting each other.

[0054] As a result, even if vertical shaking occurs due to an earthquake, the uppermost vertical portion 4a1 and the middle vertical portion 4a1 are tensed against each other, and buckling of the suspension bolt 1 at the location reinforced by the uppermost and middle reinforcing members 4a can be prevented.

[0055] Furthermore, in the example of FIG. 61, a reinforcing member 4a is also attached at the lowermost position and is arranged and fixed in the vicinity of almost contacting the middle reinforcing member 4a, so buckling of the suspension bolt 1 at the location reinforced by the reinforcing member 4a at the lowermost position can also be avoided.

[0056] Figures 62 to 66 show another embodiment of the present invention.

[0057] In FIGS. 62, 63, and 64, a vertical reinforcing tool 5 is provided to connect two reinforcing members 4a, 4a joined to two predetermined upper and lower positions of each single suspension bolt 1. Also, a reinforcing brace 3 is attached. The vertical reinforcing tool 5 is, for example, an L-shaped cross-section plate and has a strength stronger than that of a single suspension bolt.

[0058] More specifically, the lower end 4a12 of the vertical portion 4a1 of the upper reinforcing member 4a is arranged upward, and the lower end 4a12 of the vertical portion 4a1 of the lower reinforcing member 4a is arranged downward. The vertical reinforcing tool 5 connects the portion where the vertical portion 4a1 and the horizontal portion 4a2 of the upper reinforcing member 4a intersect, and the portion where the vertical portion 4a1 and the horizontal portion 4a2 of the lower reinforcing member 4a intersect.

[0059] As described above, a pressing fitting 45 for pressing the suspension bolt 1 exists at the intersection of the vertical portion 4a1 and the horizontal portion 4a2 of such a reinforcing member 4a (see FIG. 3). This vertical reinforcing tool 5 is connected with a bolt 46' from above the pressing fitting 45 (see FIG. 64) and is clamped by the bolt 46'.

[0060] The pressing fitting 45 at such an intersection may be omitted, and the vertical reinforcing tool 5 may be used also as the pressing fitting 45.

[0061] By doing so, even if a force is applied to the suspension bolt 1 in the vertical direction during an earthquake, the risk of buckling can be suppressed due to the presence of the vertical reinforcing tool 5.

[0062] FIGS. 65 and 66 show an example where the reinforcing brace 3 is not provided. By providing the vertical reinforcing tool 5 and the suspension bolt reinforcing tool 4, it is an example where the reinforcing brace 3 can be omitted. By omitting the reinforcing brace 3 in this way, the space generated can be utilized. For example, it is convenient that a duct 51 or piping 52 can be arranged in the space.

[0063] Note that the equipment to be suspended is not limited to the air conditioner 2 and the duct 51, and other equipment is also possible.

[0064] In addition, the suspension bolt 1 may be directly attached to the ceiling or attached to a suspension bracket attached to the ceiling.

[0065] Note that the connecting member is not necessarily provided between adjacent suspension bolts, and may be provided between opposing suspension bolts in addition to adjacent suspension bolts. Correspondingly, three or more horizontal portions may be provided for one vertical portion.

Industrial Applicability

[0066] The suspension bolt reinforcement tool in the present invention can enhance the earthquake resistance more, and thus is useful when suspending an air conditioner or the like from the ceiling.

Explanation of Reference Numerals

[0067] 1 Suspension bolt 2 Air conditioner 3 Reinforcing brace 4 Suspension bolt reinforcement tool 4a Reinforcing member 4a1 Vertical portion 4a11 Edge portion 4a12 Lower end 4a2 Horizontal portion 4a2‘ Second horizontal portion 4a21 End portion 4b Connecting member 4b1 Both end portions 40 L-shaped member 40a Hole 41 Lower end attachment portion 41a Hole 42 Horizontal plate 43 Vertical plate 44 Concave strip portion 45 Pressing fitting 46 Bolt 46‘ Common tightening bolt 47 Lower attachment portion 48 Upper attachment portion 49 Lowering platform 5 Vertical reinforcement tool 50 Panel 51 Duct 52 Pipe

Claims

1. A suspension bolt reinforcing tool attached to a predetermined position of a plurality of suspension bolts arranged in parallel in the vertical direction for suspending a device to be suspended, The suspension bolt reinforcing tool is characterized by comprising a reinforcing member composed of a vertical portion and a horizontal portion joined to each suspension bolt, and a connecting member connecting two reinforcing members to each other.

2. The reinforcing member is formed by fixing two L-shaped members to each other by their sides in the vertical direction, Two of the sides in the vertical direction form the vertical portion, two of the sides in the horizontal direction of the two L-shaped members form the horizontal portion, and the two sides in the horizontal direction form a predetermined angle with each other in a plan view, The connecting member connects the horizontal portions of the two reinforcing members, and the suspension bolt reinforcing tool according to Claim 1.

3. The upper end of the suspension bolt is connected to a ceiling or a suspension platform attached to the ceiling, and the lower end is connected to the device to be suspended, and the suspension bolt reinforcing tool according to Claim 2.

4. The connecting member has greater flexibility than the reinforcing member, and the suspension bolt reinforcing tool according to Claim 3.

5. A vertical reinforcing tool having a strength stronger than that of a predetermined single suspension bolt, which connects two reinforcing members joined to two predetermined positions, above and below, of a single suspension bolt among the suspension bolts to each other, and the suspension bolt reinforcing tool according to Claim 2.

6. The lower end of the vertical portion of the upper reinforcing member is arranged upward, and the lower end of the vertical portion of the lower reinforcing member is arranged downward, The vertical reinforcing tool connects a portion where the vertical portion and the horizontal portion of the upper reinforcing member intersect and a portion where the vertical portion and the horizontal portion of the lower reinforcing member intersect, and the suspension bolt reinforcing tool according to Claim 5.

7. A reinforcing brace is attached between the plurality of suspension bolts, the reinforcing member and the connecting member are arranged below the reinforcing brace, the upper end of the reinforcing brace is connected to the suspension bolt, and the lower end of the reinforcing brace is connected to the horizontal portion of the lower reinforcing member, and the suspension bolt reinforcing tool according to Claim 4.

8. The reinforcing member and the connecting member are also attached above the position where the reinforcing brace is attached to the suspension bolt, the upper end of the reinforcing brace is connected to the horizontal portion of the upper reinforcing member instead of the suspension bolt, and the lower end of the reinforcing brace is connected to the horizontal portion of the lower reinforcing member, and the suspension bolt reinforcing tool according to Claim 7.

9. A horizontal portion is also formed at the lower end of the vertical portion of the reinforcing member, and a connecting member connects the horizontal portions at the lower ends of the two reinforcing members. The suspension bolt reinforcing tool according to claim 4.

10. At least two reinforcing members are attached to one suspension bolt, and the lower ends of the vertical portions of two of the reinforcing members are attached in a state of facing and abutting each other. The suspension bolt reinforcing tool according to claim 4.

11. The suspension bolt is joined to a concave groove portion formed outside a portion where the two L-shaped members are fixed to each other by their sides in the vertical direction. The suspension bolt reinforcing tool according to any one of claims 2 to 10.

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