Piping Fixtures

Abstract

To provide a piping fixture capable of preventing condensation from occurring in a gap formed between the fixture and a heat insulating material. [Configuration] A piping fixture 1 according to the present invention comprises a base-side clamping member 2 and a non-base-side clamping member 3 disposed adjacent to the base-side clamping member in a manner that sandwiches a piping 4. The base-side clamping member 2 comprises a base 7, a semi-cylindrical outer shell portion 8a extending from the base, and an insulating portion 9a extending inside the outer shell portion, while the non-base-side clamping member 3 comprises a semi-cylindrical outer shell portion 8b and an insulating portion 9b extending inside the outer shell portion. Semi-annular spaces 16a and 16b are formed inside the outer shell portions 8a and 8b on the protruding sides, respectively, and these semi-annular spaces are integrated into a cylindrical space 17 into which the end of a thermal insulating material 51 is inserted.

Description

[Technical Field]

[0001] The present invention relates to a pipe fastener used to fasten various types of pipes to a bracket, a stand, or a vibration rest. [Background technology]

[0002] In air conditioning and sanitary equipment construction, various types of piping are used depending on the application and purpose, but when installing them inside a building, if they are horizontal pipes, they are suspended from the ceiling or upper floor slab with suspension bands, or placed on brackets attached to the wall or stands installed on the floor, and then secured to these brackets or stands with U-bolts, while if they are rising pipes, they are secured to the wall with vertical bands and also secured to a wall-mounted anti-vibration bracket with a U-bolt.

[0003] When cooling water flows through these pipes, condensation may corrode metal products or drip downwards, causing various problems. Therefore, it is necessary to wrap insulation around the pipes to prevent heat loss. In addition, where pipe fixing devices are installed, it is necessary to place insulation material between the pipe fixing device and the fixing device to prevent condensation from forming on the mounting components such as brackets. For example, a known pipe fixing device surrounds a doughnut-shaped insulation material made of rigid urethane foam with a U-band, and then fixes the U-band to a building component such as a bracket, frame, or vibration rest (Non-Patent Document 1).

[0004] Here, the above-mentioned insulating material is also required to have the function of transmitting the load for fixing the pipe, but since it is difficult to satisfy both performance requirements, the applicant developed a pipe fixing device that can improve the insulating performance while maintaining the load transmission function (Patent Document 1).

[0005] In the piping fixture described in Patent Document 1, the load transmission part interposed between the piping and a fixing member such as a U-bolt or U-band has gaps extending along the axial direction of the piping, which are discretely arranged around the circumferential direction of the piping. With this configuration, by appropriately selecting the material for forming the load transmission part and appropriately setting the discrete arrangement form of the gaps, it is possible to form an insulating space of sufficient volume within the load transmission part while ensuring the load transmission function, and to provide insulating performance equal to or better than that of conventional insulating materials using rigid polyurethane foam, in a more economical manner. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent Publication No. 2021-107718 [Non-patent literature]

[0007] [Non-Patent Document 1] Showa Corporation, [online], [searched December 8, 2019], Internet<URL :https: / / www.showa-cp.jp / products-own / sleeperl / > Summary of the Invention [Problem to be solved by the invention]

[0008] However, when wrapping the insulation around the pipe, the insulation is interrupted at the location where the pipe fixing device is located, and the end face of the insulation is in contact with the pipe fixing device; in other words, the pipe fixing device is sandwiched between two pieces of insulation. If the worker is not skilled, gaps may form between the end face of the insulation and the pipe fixing device, or even if there are no gaps when the insulation is wrapped, gaps may form between the end face of the insulation and the pipe fixing device over time, and outside air may enter through these gaps, causing condensation on the surface of the pipe. [Means for solving the problem]

[0009] The present invention has been made in consideration of the above-mentioned circumstances, and aims to provide a piping fixture that combines load transmission performance and heat insulation performance, and that can prevent condensation from occurring due to gaps between the fixture and the heat-insulating material.

[0010] In order to achieve the above object, as set forth in claim 1, a piping fixture according to the present invention comprises a base-side clamping member that is arranged on a building-side component such as a bracket, a frame, or a vibration-resistance brace, and a non-base-side clamping member that is arranged adjacent to the base-side clamping member in a manner that sandwiches a pipe, and fixing members such as U-bolts or U-bands are arranged so as to surround the base-side clamping member and the non-base-side clamping member when the base-side clamping member and the non-base-side clamping member are arranged adjacent to each other, and the fixing members are connected to the building-side component, thereby enabling the pipe to be fixed to the building-side component. The base-side clamping member is composed of a base that abuts against the building-side member, a first outer shell portion that extends in a semi-cylindrical shape and shares a portion with the base, and a first insulating portion that extends inside the first outer shell portion and has a semi-annular cross section, and a first piping abutment surface that abuts against the piping is provided on the inner circumferential side of the first insulating portion, and a base-side abutment surface that abuts against the non-base-side clamping member is provided on the radial side of the first insulating portion, the non-base side clamping member is composed of a semi-cylindrical second outer shell portion and a second heat insulating portion extending inside the second outer shell portion and having a semi-annular cross section, a second pipe abutment surface with which the pipe abuts is provided on the inner circumferential side of the second heat insulating portion, and a non-base side abutment surface with which the base side clamping member abuts is provided on the radial side of the second heat insulating portion, By configuring the first outer shell part so that an end face of the first outer shell part protrudes beyond the end face of the first heat insulating part, a first semi-annular space is formed inside the protruding side of the first outer shell part, and by configuring the second outer shell part so that an end face of the second outer shell part protrudes beyond the end face of the second heat insulating part, a second semi-annular space is formed inside the protruding side of the second outer shell part, the first semi-annular space and the second semi-annular space are continuously integrated as a cylindrical space with the base-side abutment surface and the non-base-side abutment surface abutting against each other, and an end of the heat-insulating material wrapped around the piping is inserted into the cylindrical space; The first outer shell portion and the second outer shell portion close the gap that occurs between the end face of the heat insulating material and the end face of the first insulating portion or the end face of the second insulating portion, and by covering the circumferential surface near the end of the heat insulating material, block the path through which outside air flows from around the heat insulating material into the gap.

[0011] In addition, the piping fixture of the present invention is configured so that the first insulating portion is arranged so that voids extending along the material axis direction of the piping at least to the vicinity of both end faces of the first insulating portion are discretely arranged along the circumferential direction of the piping, and the second insulating portion is arranged so that voids extending along the material axis direction of the piping at least to the vicinity of both end faces of the second insulating portion are discretely arranged along the circumferential direction of the piping.

[0012] In the piping fixture according to the present invention, the spaces are formed so that their cross-sectional shapes are hexagonal, and the spaces are arranged adjacent to each other with hexagonal partition walls in between.

[0013] In addition, the piping fixture of the present invention includes a semi-cylindrical first pipe covering portion extending in the axial direction of the piping material from the inner periphery of the first insulating portion so that its inner periphery is continuously integrated with the first pipe abutment surface, and a semi-cylindrical second pipe covering portion extending in the axial direction of the piping material from the inner periphery of the second insulating portion so that its inner periphery is continuously integrated with the second pipe abutment surface.

[0014] In addition, the piping fixture of the present invention has a U-bolt as the fixing member, and a first fitting groove into which the U-bolt fits is formed on the circumferential surface of the first outer shell part along the circumferential direction and in a part of the circumferential surface, and a second fitting groove into which the U-bolt fits is formed on the circumferential surface of the second outer shell part along the circumferential direction and over the entire length.

[0015] In addition, the piping fixture of the present invention has a U-bolt as the fixing member, and a first fitting groove into which the U-bolt fits is formed on the circumferential surface of the first outer shell part along the circumferential direction and in a part of the circumferential surface, and a second fitting groove into which the U-bolt fits is formed on the circumferential surface of the second outer shell part along the circumferential direction and over the entire length.

[0016]

[0017]

[0018]

[0019]

[0020] [Function of piping fixtures] The piping fixture according to the present invention comprises a base-side clamping member arranged on a building-side component such as a bracket, a frame, or a vibration-proof rest, and a non-base-side clamping member arranged adjacent to the base-side clamping member in a manner that clamps the piping. The base-side clamping member is made up of a base that abuts against the building-side component, a first outer shell portion that extends in a semi-cylindrical shape and shares a portion with the base, and a first insulating portion that extends inside the first outer shell portion and has a semi-annular cross section. The non-base-side clamping member is made up of a second outer shell portion that is semi-cylindrical. The first outer shell portion and the second outer shell portion are configured so that their end faces protrude in the axial direction of the piping material, thereby forming a first semi-annular space and a second semi-annular space inside the protruding side, and these first semi-annular space and second semi-annular space are continuously integrated as a cylindrical space into which the end of the thermal insulation material wrapped around the piping can be inserted.

[0021] In this way, even if the end face of the thermal insulation material becomes separated from the end face of the first insulating part or the end face of the second insulating part, the resulting gap is blocked by the first outer shell part and the second outer shell part, and the circumferential surface near the end of the thermal insulation material is also covered by the first outer shell part and the second outer shell part, blocking the path for outside air to flow from around the thermal insulation material into the above-mentioned gap, thus eliminating the concern of condensation forming on the circumferential surface of the pipe at the pipe fixing position where the thermal insulation material is interrupted.

[0022] Piping is primarily used in cases where there is concern about condensation on the outer surface due to the flow of cooling water or cold air inside, but the transport medium is not limited to cooling water or cold air as long as there is concern about condensation, such as when the humidity inside the building is relatively high.

[0023] The first insulation section and the second insulation section can be configured in any manner as long as they have both insulation performance and load transmission performance, but they can be configured so that voids extending along the material axis direction of the pipe at least to the vicinity of both end faces of the first insulation section and the second insulation section are discretely arranged along the circumferential direction of the pipe, and it is particularly desirable to form each of the voids so that their cross-sectional shape is hexagonal and to arrange them close to each other via hexagonal partitions.

[0024] The first insulating portion is provided with a first pipe abutment surface on its inner periphery against which the pipe abuts, and the second insulating portion is provided with a second pipe abutment surface on its inner periphery against which the pipe abuts. The pipe is clamped between the base side clamping member and the non-base side clamping member by abutting against the first pipe abutment surface and the second pipe abutment surface. A configuration can be adopted in which a semi-cylindrical first pipe covering portion extends from the inner periphery of the first insulating portion in the axial direction of the piping material so that its inner periphery is continuously integrated with the first pipe abutment surface, and a semi-cylindrical second pipe covering portion extends from the inner periphery of the second insulating portion in the axial direction of the piping material so that its inner periphery is continuously integrated with the second pipe abutment surface.

[0025] According to this configuration, the peripheral surface of the pipe is covered with the first pipe covering portion and the second pipe covering portion, so even if the end face of the heat insulating material is separated from the end face of the first insulating portion and the end face of the second insulating portion, the peripheral surface of the pipe will not be exposed to the resulting gap, and furthermore, the path of outside air flowing from the gap onto the peripheral surface of the pipe is blocked, thereby more reliably preventing condensation on the peripheral surface of the pipe at the above-mentioned pipe fixing position.

[0026] The piping fixing device of the present invention is configured so that the piping clamped between the base side clamping member and the non-base side clamping member is fixed to the building side member by arranging a fixing member to surround the base side clamping member and the non-base side clamping member while the base side clamping member and the non-base side clamping member are arranged adjacent to each other and connecting the fixing member to the building side member.As long as such an installation configuration is possible, the configurations of the fixing member and the building side member are arbitrary, but when a U-bolt is used as the fixing member, it is desirable to form a first fitting groove in the first outer shell portion, which fits the U-bolt along the circumferential direction of its peripheral surface and over its entire length, and to form a second fitting groove in the second outer shell portion, which fits the U-bolt along the circumferential direction of its peripheral surface and into part of it.

[0027] According to this configuration, the piping fixture according to the present invention can be prevented from shifting relative to the building-side component during fixing work using a U-bolt.

[0028] [Function of the attachment for heat insulation material according to the reference invention] The attachment for thermal insulation material according to the reference invention is used in conjunction with the above-mentioned piping fixing device, and comprises a pair of semi-cylindrical members, each of which is composed of a semi-cylindrical main body and an inner flange portion that protrudes inward at one end of the semi-cylindrical main body so that it can receive the end of the thermal insulation material. By arranging the pair of semi-cylindrical members adjacent to each other in a cylindrical shape as a whole, it is possible to insert the end of the thermal insulation material inside them.

[0029] In this way, the axial length of the piping material of the above-mentioned cylindrical space consisting of the first semi-annular space and the second semi-annular space, i.e., the insertion depth of the heat-insulating material, is increased, thereby more reliably preventing condensation from occurring on the surface of the piping at the piping fixing position.

[0030] In addition, when wrapping the insulation material, it is necessary to cut the insulation material appropriately depending on the conditions at the construction site. However, because the insulation material is often made of fibrous materials such as glass wool, the fibers are likely to protrude or become tangled at the cut surface, or the overall shape may bulge. In such cases, it becomes difficult to insert the end of the insulation material into the cylindrical space. However, with the above-described configuration, the end of the insulation material can be clamped in advance between a pair of semi-cylindrical members, and in that state, the end can be inserted into the cylindrical space of the piping fixing device, making the insertion into the cylindrical space easier. [Brief explanation of the drawings]

[0031] [Figure 1] 1 is an overall perspective view showing a piping fixture 1 according to the present embodiment together with its arrangement. [Figure 2] FIG. 2 is a front view showing the arrangement of the piping fixture 1 according to the present embodiment. [Figure 3] 1A and 1B are diagrams of a piping fixture 1 according to this embodiment, in which (a) is a cross-sectional view taken along line AA, (b) is a cross-sectional view of a non-base side clamping member 3 of the piping fixture 1, and (c) is a cross-sectional view of a base side clamping member 2. [Figure 4] 1 is a construction drawing showing how a pipe 4 is attached to a frame 21, which is a building-side component, using a pipe fixing device 1 according to the present embodiment. [Figure 5] 10 is a diagram showing how the end of the heat insulating material 51 is connected to the piping fixture 1. FIG. [Figure 6] 1A and 1B are diagrams showing the connection between a piping fixture and a thermal insulating material 51, where FIG. 1A shows the connection between a piping fixture 1 according to this embodiment and a thermal insulating material 51, and FIG. 1B shows the connection between a piping fixture 61 and a thermal insulating material 51 according to the prior art. [Figure 7] FIG. 10 is an overall perspective view of a piping fixture according to a modified example. [Figure 8]FIG. 2 is an overall perspective view of an attachment 81 for heat insulating material according to the present embodiment. [Figure 9] 10 is a perspective view showing how an attachment 81 for heat insulating material is attached to an end 52 of a heat insulating material 51. FIG. [Figure 10] 10 is a cross-sectional view showing how an end 52 of a heat insulating material 51 is connected to a piping fixture 1 using an attachment 81 for heat insulating material. FIG. [Figure 11] 10A and 10B are diagrams showing an attachment 81' for heat insulation material that replaces the attachment 81 for heat insulation material, where (a) is a front view, (b) is an arrow view seen from the direction of line BB, and (c) is an explanatory diagram showing the process of clamping the heat insulation material 51. DETAILED DESCRIPTION OF THE INVENTION

[0032] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a piping fixture according to the present invention will be described with reference to the accompanying drawings.

[0033] FIG. 1 is an overall perspective view showing the arrangement of a piping fixture 1 according to this embodiment, FIG. 2 is a front view thereof, FIG. 3(a) is a cross-sectional view taken along line AA in FIG. 2, FIG. 3(b) is a cross-sectional view of a non-base side clamping member 3 of the piping fixture 1, and FIG. 3(c) is a cross-sectional view of a base side clamping member 2.

[0034] As can be seen from these figures, the piping fixing device 1 is used to attach a pipe 4 to a frame 21, which is a building-side component, and comprises a base-side clamping member 2 that is placed on the frame 21, and a non-base-side clamping member 3 that is placed adjacent to the base-side clamping member in a manner that clamps the pipe 4.When the base-side clamping member 2 and the non-base-side clamping member 3 are placed adjacent to each other, a U-bolt 5, which is a fixing member, is placed to surround them, and the U-bolt is connected to the frame 21 with nuts 6, 6, so that the pipe 4 can be fixed to the frame 21.

[0035] The base side clamping member 2 is composed of a base 7 that abuts against the stand 21, an outer shell portion 8a as a first outer shell portion that is extended in a semi-cylindrical shape and shares a portion with the base, and an insulating portion 9a as a first insulating portion that extends inside the outer shell portion and has a semi-annular cross section, and on the inner side of the insulating portion is provided a piping abutment surface 10a as a first piping abutment surface against which the piping 4 abuts, and on the radial side of the insulating portion 9a is provided a base side abutment surface 11a against which the non-base side clamping member 3 abuts.

[0036] In addition, the non-base side clamping member 3 is composed of an outer shell portion 8b as a second outer shell portion having a semi-cylindrical shape, and an insulating portion 9b as a second insulating portion extending inside the outer shell portion and having a semi-annular cross section, and on the inner side of the insulating portion is provided a piping abutment surface 10b as a second piping abutment surface against which the piping 4 abuts, and on the radial side of the insulating portion 9b is provided a non-base side abutment surface 11b against which the base side clamping member 2 abuts with its base side abutment surface 11a.

[0037] Here, the insulating portion 9a is configured so that voids 12a extending along the material axis direction of the pipe 4 to near both end faces of the insulating portion are discretely arranged along the circumferential direction of the pipe, and each void is formed so that its cross-sectional shape is hexagonal, and they are arranged close to each other via hexagonal partitions 13a.

[0038] Similarly, the insulating portion 9b is configured so that voids 12b extending along the material axis direction of the pipe 4 to near both end faces of the insulating portion are discretely arranged along the circumferential direction of the pipe, and each void is formed so that its cross-sectional shape is hexagonal and they are arranged close to each other via hexagonal partitions 13b.

[0039] On the inner periphery of the insulating section 9a, a semi-cylindrical first pipe covering section 14a is extended in the axial direction of the piping material so that its inner periphery is continuously integrated with the pipe abutment surface 10a, and on the inner periphery of the insulating section 9b, a semi-cylindrical second pipe covering section 14b is extended in the axial direction of the piping material so that its inner periphery is continuously integrated with the pipe abutment surface 10b.

[0040] On the other hand, a fitting groove 15a into which the U-bolt 5 is fitted is formed in a part of the outer peripheral surface of the outer shell portion 8a along the circumferential direction as a first fitting groove, and a fitting groove 15b into which the U-bolt 5 is fitted is formed in the outer peripheral surface of the outer shell portion 8b along the circumferential direction and over its entire length as a second fitting groove.

[0041] Here, the outer shell portion 8a is configured so that each end face thereof protrudes by a distance L from each end face of the insulating portion 9a (see Figure 3(c)). With this configuration, a first semi-annular space 16a is formed on both sides of the insulating portion 9a inside the protruding side of the outer shell portion 8a, and the outer shell portion 8b is configured so that each end face thereof protrudes by a distance L from each end face of the insulating portion 9b (see Figure 3(b)). With this configuration, a second semi-annular space 16b is formed on both sides of the insulating portion 9b inside the protruding side of the outer shell portion 8b, and these pairs of semi-annular spaces 16a and 16b are continuously integrated as a cylindrical space 17 with the base side abutment surface 11a and the non-base side abutment surface 11b abutting against each other, and the ends of the heat insulating material 51 wrapped around the piping 4 are inserted into each cylindrical space with the insertion depth being the above-mentioned length L.

[0042] The base side clamping member 2 is configured so that the base 7, outer shell 8a, insulating portion 9a and pipe covering portion 14a are continuously integrated, and furthermore, the insulating portion 9a, which has a honeycomb structure, has sufficient strength, and can be integrally molded from, for example, a thermoplastic elastomer.

[0043] Similarly, the non-base side clamping member 3 is configured so that the outer shell portion 8b, the insulating portion 9b, and the pipe covering portion 14b are continuously integrated, and furthermore, the insulating portion 9b, which has a honeycomb structure, has sufficient strength, and can be integrally molded from, for example, a thermoplastic elastomer.

[0044] To fix the pipe 4 to the stand 21 using the pipe fixing device 1 and wrap the heat insulating material 51 around the pipe 4 and connect its end to the pipe fixing device 1, first, the pipe 4 is clamped between the base side clamping member 2 and the non-base side clamping member 3 that make up the pipe fixing device 1, and the base side clamping member 2 is placed on the stand 21 so that the back surface of the base 7 abuts the mounting surface of the stand 21.

[0045] When clamping the piping 4 with the base side clamping member 2 and the non-base side clamping member 3, as shown in Figure 4, the base side clamping member 2 and the non-base side clamping member 3 are arranged adjacent to each other so that the outer surface of the piping 4 abuts against the inner surface and piping abutment surface 10a of the piping covering portion 14a and the inner surface and piping abutment surface 10b of the piping covering portion 14b, respectively, and so that the base side abutment surface 11a and the non-base side abutment surface 11b abut against each other.

[0046] Next, a U-bolt 5 is placed to surround the base side clamping member 2 and the non-base side clamping member 3, and the U-bolt is connected to the base 21 with nuts 6, 6, thereby fixing the piping 4 to the base 21 via the piping fixing device 1 (see Figures 1 and 5).

[0047] Next, heat insulating materials 51, 51 are wrapped around the pipe 4 on both sides of the pipe fixing tool 1, and end portions 52, 52 of the heat insulating materials are inserted into the cylindrical spaces 17, 17, respectively.

[0048] In the piping fixture 1 according to this embodiment, as shown in FIG. 6(a), even if the end face of the heat insulating material 51 is separated from the end face of the insulating portion 9a or the end face of the insulating portion 9b, the resulting gap δ is filled by the outer shell portions 8a and 8b, and the peripheral surface near the end of the heat insulating material 51 is also covered by the outer shell portions 8a and 8b.

[0049] Therefore, the path (broken arrow in the figure) through which outside air flows from around the heat insulating material 51 into the gap is blocked.

[0050] Incidentally, in a conventionally known piping fixture 61, as shown in the same figure (b), if a gap δ occurs between the end face of the heat insulating material 51, a path is formed through which outside air flows in via the gap δ (solid arrow in the same figure), and condensation occurs on the outer surface of the piping 4.

[0051] As described above, according to the piping fixture 1 of this embodiment, the outer shell portions 8a and 8b are configured such that the end faces thereof protrude in the axial direction of the piping material, thereby forming the semi-annular spaces 16a and 16b on the inside of the protruding sides, respectively, and forming the cylindrical space 17 in which the semi-annular spaces 16a and 16b are continuously and integrally formed. Therefore, when wrapping the heat insulating material 51 around the piping 4, it is possible to form the end of the heat insulating material into the cylindrical space 17. Once inserted into space 17, even if the end face of heat insulating material 51 becomes separated from the end face of insulating portion 9a or the end face of insulating portion 9b, the resulting gap is blocked by outer shell portions 8a and 8b, and the circumferential surface near the end of heat insulating material 51 is also covered by outer shell portions 8a and 8b, so the path for outside air to flow from around heat insulating material 51 into the above-mentioned gap is reliably blocked, and thus there is no concern about condensation forming on the circumferential surface of pipe 4 at the pipe fixing position where heat insulating material 51 is interrupted.

[0052] Furthermore, according to the piping fixture 1 of this embodiment, the semi-cylindrical pipe covering portion 14a is provided on the inner periphery of the insulating portion 9a and extends in the axial direction of the piping material so that its inner periphery is continuously integrated with the pipe abutting surface 10a, and the semi-cylindrical pipe covering portion 14b is provided on the inner periphery of the insulating portion 9b and extends in the axial direction of the piping material so that its inner periphery is continuously integrated with the pipe abutting surface 10b. As a result, the periphery of the piping 4 is covered with the pipe covering portions 14a and 14b at the piping fixing position where the heat insulating material 51 ends (FIG. 6(a)).

[0053] Therefore, even if the end face of the heat insulating material 51 is separated from the end face of the insulating section 9a or the end face of the insulating section 9b, the peripheral surface of the piping 4 will not be exposed to the resulting gap, and furthermore, the path of outside air flowing from the gap onto the peripheral surface of the piping 4 will be blocked, thereby more reliably preventing condensation from occurring on the peripheral surface of the piping at the above-mentioned piping fixing position.

[0054] In this embodiment, pipe covering portions 14a and 14b are provided to more reliably prevent condensation from occurring on pipe 4, but if outer shell portions 8a and 8b can sufficiently prevent condensation from occurring on pipe 4, pipe covering portions 14a and 14b may be omitted, and the pipe fixing device of the present invention may be configured with a base side clamping member 2' consisting of base portion 7, outer shell portion 8a and heat insulating portion 9a, and a non-base side clamping member 3' consisting of outer shell portion 8b and heat insulating portion 9b, as shown in Figure 7.

[0055] In addition, in this embodiment, to prevent the piping fixing device 1 from shifting relative to the base 21 and to prevent the base side clamping member 2 and the non-base side clamping member 3 from shifting relative to each other, fitting grooves 15a, 15b into which the U-bolt 5 fits are formed in the outer shell portions 8a, 8b, respectively, and a portion of the U-bolt 5 is fitted into each fitting groove, but if there is no risk of the above-mentioned positional shifting, fitting grooves 15a, 15b may be omitted.

[0056] Although not specifically mentioned in this embodiment, the piping fixture according to this embodiment and its modified examples can be used in combination with the thermal insulation material attachment 81 shown in FIG.

[0057] The attachment 81 for heat insulating material comprises a pair of semi-cylindrical members 82, 82, each of which is composed of a semi-cylindrical main body 83, an inner flange portion 84 protruding inward from one end of the semi-cylindrical main body so as to be able to receive the end of the heat insulating material 51, and an outer flange portion 85 protruding outward from the outer peripheral surface of the semi-cylindrical main body 83 so as to be able to abut against at least one of the end faces of the outer shell portion 8a and the end face of the outer shell portion 8b.By arranging the semi-cylindrical members 82, 82 adjacent to each other in a cylindrical shape as a whole, the end of the heat insulating material 51 can be inserted inside them.

[0058] To connect the end 52 of the thermal insulation material 51 to the piping fixture 1 using the thermal insulation material attachment 81 according to this embodiment, first, as shown in Figures 9 and 10(a), the end 52 of the thermal insulation material is sandwiched between the semi-cylindrical members 82, 82 so that the end face of the thermal insulation material 51 abuts the inner flange portions 84, 84, and then, as shown in Figure 10(b), the thermal insulation material 51 with the thermal insulation material attachment 81 pre-attached to the end 52 is inserted into the cylindrical space 17 of the piping fixture 1.

[0059] In the heat insulating material attachment 81 of this embodiment, the axial length of the piping material of the cylindrical space 17 consisting of the semi-annular space 16a and the semi-annular space 16b, i.e., the insertion depth of the heat insulating material 51, is expanded by the semi-cylindrical members 82, 82, thereby more reliably preventing condensation from occurring on the surface of the piping at the piping fixing position.

[0060] In addition, when wrapping the insulation material, it is necessary to cut it appropriately depending on the conditions at the construction site. However, since the insulation material is often made of fibrous materials such as glass wool, the fibers tend to protrude or become tangled at the cut surface, and the overall shape tends to bulge, making it difficult to insert the end of the insulation material into the cylindrical space.

[0061] However, with the attachment 81 for the thermal insulation material according to this embodiment, the end 52 of the thermal insulation material 51 can be clamped between the semi-cylindrical members 82, 82 in advance, and then the end can be inserted into the cylindrical space 17 of the piping fixing device 1 in that state, making the insertion into the cylindrical space 17 easier.

[0062] Although not specifically mentioned in this modified example, it is possible to configure the semi-cylindrical members 82, 82 so that they are connected to each other at one end via, for example, a plastic hinge, which makes it easier to surround the end 52 of the heat-insulating material 51.

[0063] Furthermore, in this modified example, when inserting the thermal insulation material 51 with the thermal insulation attachment 81 pre-attached thereto into the cylindrical space 17 of the piping fixture 1, the semi-cylindrical body 83 is provided with outer flange portions 85 that can abut against the end faces of the outer shell portions 8a and 8b, thereby enabling the piping fixture 1 to be securely inserted into the cylindrical space 17; however, the outer flange portions 85 may be omitted if a similar effect can be obtained by abutting the inner flange portions 84, 84 against the end faces of the insulating portions 9a and 9b.

[0064] Figure 11 shows an attachment 81' for thermal insulation material that replaces the attachment 81 for thermal insulation material, and includes semi-cylindrical members 82', 82' each consisting of a semi-cylindrical main body 83 and an inner flange portion 84 that protrudes inward from one end of the semi-cylindrical main body so that it can receive the end of the thermal insulation material 51, and by arranging each semi-cylindrical member adjacent to each other in a cylindrical shape as a whole, it is possible to insert the end of the thermal insulation material 51 inside them.

[0065] Here, the attachment 81' for the heat insulating material is different from the attachment 81 for the heat insulating material in that the outer flanges 85, 85 are omitted, while the semi-cylindrical bodies 83, 83 have a handle 101a on one side and a handle 101b on the other side protruding from the outer circumferential surface of the semi-cylindrical bodies 83, 83 in the vicinity of the adjacent portions of the semi-cylindrical bodies 83, 83. When the end 52 of the heat insulating material 51 is sandwiched between the semi-cylindrical members 82', 82' (FIG. 1(c)), the handles 101a, 101a are held with one hand, and the handle 101 is held with the other hand. Since the semi-cylindrical members 82', 82' can be arranged adjacent to each other in a cylindrical shape while holding the handles 101a, 101a and the handles 101b, 101b with the other hand, it becomes easier to clamp the end 52 of the thermal insulation material 51, and also when inserting the thermal insulation material 51 with the thermal insulation material attachment 81' pre-attached into the cylindrical space 17 of the piping fixing device 1, it can be done while holding the handles 101a, 101a or the handles 101b, 101b, which makes the insertion into the cylindrical space 17 easier.

[0066] Furthermore, the attachment 81' for the heat insulating material is provided with a plastic hinge 102 that connects the handles 101a, 101a, so that the semi-cylindrical members 82', 82' are connected to each other at one end via the plastic hinge, making it even easier to clamp the end 52 of the heat insulating material 51. [Explanation of symbols]

[0067] 1 Piping fixture 2,2´ Base side clamping member 3, 3' Non-base side clamping member 4 Piping 5 U-bolt (fixing member) 7 base 8a Outer shell part (first outer shell part) 8b Outer shell part (second outer shell part) 9a Heat insulating section (first heat insulating section) 9b Insulation section (second insulation section) 10a: Pipe contact surface (first pipe contact surface) 10b Piping contact surface (second piping contact surface) 11a Base contact surface 11b Non-base side contact surface 12a,12b void 13a,13b Hexagonal bulkhead 14a Pipe covering part (first pipe covering part) 14b Pipe covering part (second pipe covering part) 15a fitting groove (first fitting groove) 15b fitting groove (second fitting groove) 16a Semi-annular space (first semi-annular space) 16b Semi-annular space (second semi-annular space) 17 Cylindrical Space 21 Frame (building side component) 51 Heat insulation material 52 End of heat insulating material 51 81,81´ Insulation attachment 82, 82' Semi-cylindrical member (pair of semi-cylindrical members) 83 Semi-cylindrical body 84 Inner flange 85 Outer collar

Claims

1. A piping fixture comprising a base-side clamping member that is placed on a building-side component such as a bracket, a frame, or a vibration-resistance brace, and a non-base-side clamping member that is placed adjacent to the base-side clamping member in a manner that sandwiches a pipe, wherein fixing members such as U-bolts or U-bands are placed so as to surround the base-side clamping member and the non-base-side clamping member when the base-side clamping member and the non-base-side clamping member are placed adjacent to each other, and the fixing members are connected to the building-side component, thereby enabling the pipe to be fixed to the building-side component, The base-side clamping member is composed of a base that abuts against the building-side member, a first outer shell portion that extends in a semi-cylindrical shape and shares a portion with the base, and a first insulating portion that extends inside the first outer shell portion and has a semi-annular cross section, and a first piping abutment surface that abuts against the piping is provided on the inner circumferential side of the first insulating portion, and a base-side abutment surface that abuts against the non-base-side clamping member is provided on the radial side of the first insulating portion, the non-base side clamping member is composed of a semi-cylindrical second outer shell portion and a second insulating portion extending inside the second outer shell portion and having a semi-annular cross section, a second piping abutment surface with which the piping abuts is provided on the inner peripheral side of the second insulating portion, and a non-base side abutment surface with which the basal side clamping member abuts is provided on the radial side of the second insulating portion, By configuring the first outer shell portion so that an end face of the first outer shell portion protrudes beyond the end face of the first heat insulating portion, a first semi-annular space is formed inside the protruding side of the first outer shell portion, and by configuring the second outer shell portion so that an end face of the second outer shell portion protrudes beyond the end face of the second heat insulating portion, a second semi-annular space is formed inside the protruding side of the second outer shell portion, the first semi-annular space and the second semi-annular space are continuously integrated as a cylindrical space with the base-side abutment surface and the non-base-side abutment surface abutting against each other, and an end of the heat insulating material wrapped around the piping is inserted into the cylindrical space, A piping fixing device characterized in that the first outer shell portion and the second outer shell portion seal the gap that occurs between the end face of the heat insulating material and the end face of the first insulating portion or the end face of the second insulating portion, and by covering the circumferential surface near the end of the heat insulating material, block the path of outside air flowing from around the heat insulating material into the gap.

2. 2. A piping fixture as described in claim 1, wherein the first insulating portion is configured so that gaps extending along the material axis direction of the pipe at least to the vicinity of both end faces of the first insulating portion are discretely arranged along the circumferential direction of the pipe, and the second insulating portion is configured so that gaps extending along the material axis direction of the pipe at least to the vicinity of both end faces of the second insulating portion are discretely arranged along the circumferential direction of the pipe.

3. 3. A piping fixture according to claim 2, wherein each of said gaps is formed so that its cross section is hexagonal, and said gaps are arranged adjacent to one another with hexagonal partition walls interposed therebetween.

4. 4. A piping fixture according to claim 1, wherein a semi-cylindrical first pipe covering portion extends from the inner periphery of the first insulating portion in the axial direction of the piping material so that its inner periphery is continuously integrated with the first pipe abutment surface, and a semi-cylindrical second pipe covering portion extends from the inner periphery of the second insulating portion in the axial direction of the piping material so that its inner periphery is continuously integrated with the second pipe abutment surface.

5. 4. A piping fixture according to claim 1, wherein the fixing member is a U-bolt, and a fitting groove into which the U-bolt fits is formed as a first fitting groove on the circumferential surface of the first outer shell portion along the circumferential direction and in a part of the circumferential surface, and a fitting groove into which the U-bolt fits is formed as a second fitting groove on the circumferential surface of the second outer shell portion along the circumferential direction and over the entire length of the circumferential surface.

6. 5. A piping fixture according to claim 4, wherein the fixing member is a U-bolt, and a fitting groove into which the U-bolt fits is formed as a first fitting groove on the circumferential surface of the first outer shell portion along the circumferential direction and in a part of the circumferential surface, and a fitting groove into which the U-bolt fits is formed as a second fitting groove on the circumferential surface of the second outer shell portion along the circumferential direction and over the entire length.

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