Protective cover device and flow path arrangement structure

Abstract

To provide a protective cover device that suppresses adverse effects caused by linear expansion of a flow path structural member, and that enables the flow path structural member to be protected or installed in a more stable manner.SOLUTION: A protection cover device is provided with a base and a lid body that are configured to be assembled together, and a bend portion protection cover that has an internal arrangement space for arranging a bend portion, and a regulating tool that is disposed on at least the first end portion side of the bend portion out of the first end portion and the second end portion, and that restricts movements of the bend portion and a first fluid tube portion beyond a predetermined movement amount caused by linear expansion in the longitudinal direction of the second fluid tube portion toward the bend portion side. The regulating tool is located apart from the outer surface on the side opposite to the second end portion of the flow path structural member so as to form a movement allowance space, and includes a regulating portion that contacts the bend portion and / or the first fluid tube portion to restrict the excessive movement beyond the movement allowance space of the bend portion and / or the first fluid tube portion.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a protective cover device that protects a flow path component member, and a flow path arrangement structure in which the flow path component member is arranged. [Background technology]

[0002] Conventionally, various protective covers have been used to cover and protect flow path components such as fluid pipes laid on the walls of structures. Examples of flow path components include two resin fluid pipes for cold water supply and hot water supply, which are connected to a hot and cold water mixing valve installed in a bathroom. Fluid pipes are generally installed at room temperature, so when hot water is supplied, the fluid pipe for hot water supply undergoes linear expansion due to heat, causing it to swing in the radial direction or expand in the axial direction, which can cause a load to be applied to the end side of the fluid pipe and some damage to the flow path arrangement structure. In order to address the problem of linear expansion of such fluid pipes, various protective cover devices have been proposed.

[0003] For example, Patent Document 1 discloses a protective cover device that houses a pipe joint, which is configured to block linear expansion of the fluid pipe by a pipe joint arranged midway in order to prevent adverse effects caused by linear expansion due to heat during hot water supply. In the following paragraph, the reference number of Patent Document 1 is shown in parentheses. In the protective cover device of Patent Document 1, two fluid pipes (P1, P2) are connected by a straight pipe joint (A1) arranged on a base (V1) of a pipe joint housing protective cover (C1), and first and second movement restricting bodies (R1, R2) are attached to the base (V1) straddling each of the fluid pipes (P1, P2) so as to be close to both ends of the straight pipe joint (A1) on the base (V1). One end face of the restricting body main body (41) of each movement restricting body (R1, R2) is an abutting surface (43) that can abut against the end of the straight pipe joint (A1) when assembled to the base (V1). The end of the moving side of the pipe joint (A1) comes into contact with the contact surface (43) of one of the first and second movement restricting bodies (R1, R2) attached to the base (V1), and the movement beyond this is restricted (prevented). As a result, the linear expansion acting on the two fluid pipes (P1, P2) connected via the pipe joint (A1) is blocked at the pipe joint (A1), and the linear expansion of one of the fluid pipes (P1, P2) does not affect the other fluid pipe (P1, P2). According to FIG. 21 of Patent Document 1, the protective cover device can also be applied to an elbow-shaped pipe joint (A3) arranged at a corner (B) of a building (W). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2022-143029 Summary of the Invention [Problem to be solved by the invention]

[0005] The protective cover device of Patent Document 1 is installed in such a manner that a movement restricting body attached to the base of the protective cover is in axial contact with the end of the pipe joint of the fluid pipe, and the linear expansion of the fluid pipe is blocked in the middle, thereby preventing the adverse effect of the linear expansion of the flow path component on the protective cover device. On the other hand, when linear expansion of the fluid pipe occurs due to heat or the like, the movement restricting force of the pipe joint is immediately exerted, and the movement of the pipe joint is almost completely restricted. In other words, the restricting body receives a load from the pipe joint even for a slight linear expansion of the fluid pipe in the initial stage. In other words, since the load generated by the large and small linear expansion of the fluid pipe is continuously applied to the restricting body, the restricting body itself and the mounting part of the restricting body and the base are easily damaged, and there was a risk that the flow path arrangement structure could not be stably maintained for a long period of time.

[0006] The present invention has been made to solve the above-mentioned problems, and its object is to provide a protective cover device and a flow path arrangement structure that suppress the adverse effects of linear expansion of flow path constituent members and enable more stable protection or installation of flow path constituent members (especially flow path constituent members that form a curved flow path). [Means for solving the problem]

[0007] The protective cover device according to claim 1 is a protective cover device that protects at least a bent portion of a flow path component having a bent portion constituting a bent flow path, a first fluid pipe portion extending from a first end of the bent portion, and a second fluid pipe portion extending from a second end of the bent portion, and is disposed inside the protective cover device, a bent portion protection cover including a base and a cover that can be assembled to each other and that defines an arrangement space therein for arranging the bent portion; a restricting device that is installed at least on the first end side of the first end and the second end of the bent portion and restricts movement of the bent portion and the first fluid pipe portion beyond a predetermined movement amount caused by linear expansion of the second fluid pipe portion toward the bent portion in a longitudinal direction, The regulating device is characterized in that it is positioned at a distance so as to form a movement-permitting space between itself and the outer surface opposite the second end of the flow path constituent member, and is provided with a regulating portion that abuts against the bent portion and / or the first fluid pipe portion to regulate excessive movement of the bent portion and / or the first fluid pipe portion beyond the movement-permitting space.

[0008] The protective cover device of claim 2 is characterized in that, in the protective cover device of claim 1, the regulating tool comprises a regulating tool main body fixed to a wall surface to which the base is fixed, and a regulating body having an attachment portion attached to an attachment portion of the regulating tool main body, and the regulating portion is provided on the regulating body. The protective cover device according to claim 2 further comprises: a fluid pipe section protection cover having a piping path for the fluid pipe section therein and connected to the bent section protection cover to enable (together with the bent section protection cover) the arrangement of a flow path formed by the bent section and the fluid pipe section; The fluid pipe protective cover includes a base member fixed to a wall surface and a cover member assembled to the base member to form the piping path, The regulating device main body may be characterized in that, when positioned and fixed between a base of the fluid pipe section protective cover and the base member, the covering member assembled to the base member covers the entire regulating device when the regulating body is attached to the regulating device main body.

[0009] The protective cover device according to a third aspect of the present invention is the protective cover device according to the first aspect, wherein the regulating tool is freely connectable to a connected portion provided on the base.

[0010] The protective cover device described in claim 4 is characterized in that, in the protective cover device described in any one of claims 1 to 3, the regulating device has a surrounding portion that surrounds at least a portion of the outer periphery of the flow path component member, and the regulating portion is provided on the inner surface of the surrounding portion.

[0011] The protective cover device described in claim 5 is the protective cover device described in any one of claims 1 to 3, further comprising a fluid pipe section protective cover connected to at least one end of the bent section protective cover and arranging and protecting the first fluid pipe section inside, and the fluid pipe section protective cover has a positioning section that holds the first fluid pipe section and determines the axial position of the first fluid pipe section.

[0012] The flow path arrangement structure according to claim 6 is a flow path arrangement structure in which a flow path that is bent with respect to a structure is arranged, a flow path forming member including a bent portion that forms the bent flow path, a first fluid pipe portion extending from a first end of the bent portion, and a second fluid pipe portion extending from a second end of the bent portion; a bent portion protection cover including a base and a cover that can be assembled to each other and that defines an arrangement space therein for arranging the bent portion; a restricting device that is installed at least at the first end of the first end and the second end of the bent portion and restricts movement of the bent portion and the first fluid pipe portion beyond a predetermined movement amount caused by linear expansion of the second fluid pipe portion toward the bent portion in a longitudinal direction, The bent portion protection cover is disposed so as to protect the bent portion of the flow path component member laid in the structure, The regulating device installed at least on the first end side of the bent portion is characterized in that it is positioned at a distance so as to form a movement-permitting space between itself and the outer surface of the flow path constituent member opposite the second end, and is provided with a regulating portion that abuts against the bent portion and / or the first fluid pipe portion when the second fluid pipe portion linearly expands longitudinally toward the bent portion, thereby regulating excessive movement of the bent portion and the first fluid pipe portion beyond the movement-permitting space.

[0013] A flow path arrangement structure according to a seventh aspect of the present invention is the flow path arrangement structure according to the sixth aspect, wherein the flow path forming members are composed of a pipe joint forming the bent portion, a first fluid pipe connected to a first end of the pipe joint and forming the first fluid pipe portion, and a second fluid pipe connected to a second end of the pipe joint and forming the second fluid pipe portion, The restricting portion is provided at least at a position adjacent to the first end of the pipe joint and at a position capable of surrounding an outer surface of the first fluid pipe.

[0014] The flow path arrangement structure of claim 8 is characterized in that, in the flow path arrangement structure of claim 6, the regulating devices are installed at both the first end and the second end of the bent portion, and in each of the first and second regulating devices installed at the first and second ends, the regulating portions are positioned apart so as to form a movement-permitting space between themselves and the outer surface of the opposite side of the end of the flow path constituent member, and when one of the first and second fluid pipe portions linearly expands longitudinally toward the bent portion, it abuts against the other of the bent portion and / or the first and second fluid pipe portions to regulate excessive movement of the flow path constituent member beyond the movement-permitting space.

[0015] The flow path arrangement structure according to claim 9 is a flow path arrangement structure in which a flow path that is bent with respect to a structure is arranged, a flow path forming member including a bent portion that forms the bent flow path, a first fluid pipe portion extending from a first end of the bent portion, and a second fluid pipe portion extending from a second end of the bent portion; a bent portion protection cover including a base and a cover that can be assembled to each other and that defines an arrangement space therein for arranging the bent portion; a restricting device that is installed at least on the first end side of the first end and the second end of the bent portion and restricts movement of the bent portion and the first fluid pipe portion beyond a predetermined movement amount caused by linear expansion of the second fluid pipe portion toward the bent portion in a longitudinal direction, the bent portion protection cover is disposed so as to protect the bent portion of the flow path component member laid on the structure, a foam layer compressible in a thickness direction is fitted on the first end of the bent portion and / or on an outer surface of the first fluid pipe portion; the restricting device installed at least on the first end side of the bent portion is provided with a restricting portion that is positioned away from an outer surface of the flow path component opposite to the second end to form a movement allowance space, and that comes into contact with the first end of the bent portion and / or the foam layer of the first fluid pipe portion when the second fluid pipe portion linearly expands in the longitudinal direction toward the bent portion to restrict excessive movement of the bent portion and the first fluid pipe portion beyond the movement allowance space, The foam layer is characterized in that it is compressively deformable between the first end of the bending portion and / or the first fluid pipe portion and the regulating portion so as to allow the bending portion and the first fluid pipe portion to move during linear expansion of the second fluid pipe portion.

[0016] The flow path arrangement structure of claim 10 is characterized in that, in the flow path arrangement structure of claim 9, the regulating device has a surrounding portion surrounding at least a portion of the outer periphery of the flow path component member, the regulating portion is formed on the inner surface of the surrounding portion and a plurality of protrusions are provided at intervals in the surrounding direction, and the foam layer has compressed portions pressed by the plurality of protrusions and non-compressed portions that are relatively less compressed or that are not compressed and that are inserted between the plurality of protrusions, alternately formed in the surrounding direction.

[0017] The flow path arrangement structure according to claim 11 is a flow path arrangement structure in which a flow path that is bent with respect to a structure is arranged, a flow path forming member that forms the bent flow path, the flow path including a bent portion having a first end and a second end, and a fluid pipe portion extending linearly from the second end of the bent portion; a restricting device that is installed on a first end side of the bent portion and restricts movement of the bent portion beyond a predetermined movement amount associated with linear expansion of the fluid pipe portion on the second end side toward the bent portion in a longitudinal direction, The flow path forming member is laid on a wall surface of the structure, and the regulating tool is fixed to the wall surface, The regulating device installed on the first end side of the bent portion is positioned away from the outer surface of the flow path component member opposite the second end side to form a movement-permitting space, and is provided with a regulating portion that abuts against the flow path component member when the fluid pipe portion linearly expands longitudinally toward the bent portion to regulate excessive movement of the flow path component member beyond the movement-permitting space.

[0018] The flow path arrangement structure of claim 12 is characterized in that, in the flow path arrangement structure of claim 11, the bent portion and the fluid pipe portion integrally form a fluid pipe, and the fluid pipe is arranged in a bent state at the bent portion.

[0019] A flow path arrangement structure according to a thirteenth aspect of the present invention is the flow path arrangement structure according to the eleventh or twelfth aspect, wherein the straight fluid pipe section of the flow path component member is housed in a straight fluid pipe section protective cover, the bent section is housed in a bent section protective cover, and the regulating device is positioned in the fluid pipe section protective cover and / or the bent section protective cover so as to be entirely covered, The present invention is characterized in that an outer surface of the flow path component opposite to the second end is spaced apart from an inner surface of the fluid pipe section protective cover and / or the bent section protective cover. Effect of the Invention

[0020] According to the protective cover device of claim 1, the bent portion protective cover is configured to protect the bent portion of the flow path component by disposing it therein. The restricting tool is provided at least on the first end side of the first end and the second end of the bent portion, and is installed so as to restrict movement of the bent portion and the first fluid pipe portion beyond a predetermined movement amount caused by linear expansion of the second fluid pipe portion in the longitudinal direction toward the bent portion side. The restricting tool is provided with a restricting part that abuts against the bent portion and / or the first fluid pipe portion to restrict movement of the bent portion and the first fluid pipe portion. Meanwhile, this restricting part and the outer surface of the flow path component portion opposite the second end are disposed apart (when the flow path component portion is not linearly expanded). That is, a movement allowance space is provided between them to allow movement in a direction away from the second end of the flow path component portion caused by linear expansion in the axial direction of the second fluid pipe portion. Due to the presence of this movement allowance space, the restricting tool is prevented from being affected by a load from the flow path component portion during the initial stage linear expansion of the second fluid pipe portion or during small linear expansion. This effectively prevents the regulating tool from being continuously subjected to a load due to linear expansion. Meanwhile, the regulating tool can regulate excessive movement of the flow path component beyond the movement allowance space by abutting the regulating portion with the outer surface of the flow path component. Therefore, the protective cover device can prevent adverse effects due to linear expansion of the fluid pipe section, such as damage to the regulating tool and removal of the base and lid of the bent section protective cover. Therefore, the protective cover device of the present invention prevents adverse effects on the protective cover device due to linear expansion of the flow path component (second fluid pipe section), and enables more stable protection or installation of the flow path component (particularly the flow path component that constitutes a bent flow path).

[0021] According to the protective cover device of claim 2, in addition to the effect of the invention of claim 1, the restriction tool body of the restriction tool is fixed directly or indirectly to the wall surface to which the base is fixed, so that the movement of the flow path component due to linear expansion can be more reliably restricted. Also, since the restriction body is attached to the restriction tool body, it is easy to install the restriction tool on the flow path component.

[0022] According to the protective cover device described in claim 3, in addition to the effects of the invention of claim 1, the regulating device can be freely connected to the connecting portion provided on the base, so that the regulating device can be attached to and detached from the base according to the needs of the work.

[0023] According to the protective cover device of claim 4, in addition to the effects of any one of claims 1 to 3, the surrounding part of the restricting tool surrounds at least a part of the outer periphery of the flow path component member, thereby holding the flow path component member inside. Also, since the restricting part is provided on the inner surface of the surrounding part, it is possible to effectively restrict the movement of the flow path component member due to linear expansion while holding the flow path component member inside the surrounding part.

[0024] According to the protective cover device described in claim 5, in addition to the effects of any one of the inventions of claims 1 to 3, the axial position of the first fluid pipe section is determined inside the fluid pipe section protective cover, thereby determining the relative position of the flow path constituent member (bent portion and / or first fluid pipe section) with respect to the regulating device, and it is possible to reliably form a movement-permitting space.

[0025] According to the flow path arrangement structure of claim 6, a bent portion protection cover is disposed inside to protect the bent portion of the flow path component. A restricting tool is provided at least on the first end side of the first end and the second end of the bent portion, and is installed so as to restrict movement of the bent portion and the first fluid pipe portion beyond a predetermined movement amount caused by linear expansion of the second fluid pipe portion in the longitudinal direction toward the bent portion side. The restricting tool is provided with a restricting part that abuts against the bent portion and / or the first fluid pipe portion to restrict movement of the bent portion and the first fluid pipe portion. Meanwhile, this restricting part and an outer surface of the flow path component portion opposite the second end portion are disposed apart from each other (when the flow path component portion is not linearly expanded). That is, a movement allowance space is provided between them to allow movement of the flow path component portion in a direction away from the second end portion caused by linear expansion of the second fluid pipe portion in the axial direction. Due to the presence of this movement allowance space, the restricting tool is prevented from being affected by a load from the flow path component portion during the initial stage linear expansion of the second fluid pipe portion or during small linear expansion. This effectively prevents the regulator from being continuously subjected to a load due to linear expansion. Meanwhile, the regulator can regulate excessive movement of the flow path component beyond the allowable movement space by abutting the regulator with the outer surface of the flow path component. Thus, the flow path arrangement structure prevents adverse effects due to linear expansion of the fluid pipe section, such as damage to the regulator and removal of the base and lid of the bent section protective cover. Therefore, the flow path arrangement structure of the present invention prevents adverse effects on the flow path arrangement structure (regulator, bent section protective cover) due to linear expansion of the flow path component member (second fluid pipe section), and enables more stable protection or installation of the flow path component member (particularly the flow path component member that constitutes a bent flow path).

[0026] According to the flow path arrangement structure described in claim 7, in addition to the effects of the invention of claim 6, since the regulating portion is located adjacent to the first end of the pipe joint and is provided at a position capable of surrounding the outer surface of the first fluid pipe portion, it is possible to configure the entire bend portion protection cover compactly, and / or, since the shape of the regulating device is not limited by the size of the bend portion protection cover, it is possible to design the movement allowance space to be large as necessary.

[0027] According to the flow path arrangement structure described in claim 8, in addition to the effects of the invention of claim 6, by installing the restraining device at both the first end and the second end of the bent portion, it is possible to prevent adverse effects on the flow path arrangement structure (the restraining device, the bent portion protective cover) due to linear expansion of both the first fluid pipe portion and the second fluid pipe portion.

[0028] According to the flow path arrangement structure of claim 9, a bent portion protection cover is disposed inside and protects the bent portion of the flow path component. A foam layer compressible in the thickness direction that imparts heat insulation to the flow path component is fitted on the first end of the bent portion and / or the outer surface of the first fluid pipe. A restricting tool is provided at least on the first end side of the first end and the second end of the bent portion, and is installed so as to restrict movement of the bent portion and the first fluid pipe beyond a predetermined movement amount caused by linear expansion of the second fluid pipe toward the bent portion side. The restricting tool is provided with a restricting part that abuts against the foam layer fitted on the first end of the bent portion and / or the first fluid pipe to restrict movement of the bent portion and the first fluid pipe. Meanwhile, the restricting part and the outer surface of the flow path component opposite to the second end are disposed apart from each other (when the flow path component is not linearly expanded). That is, a movement allowance space is provided between them to allow movement of the flow path component in a direction away from the second end caused by linear expansion of the second fluid pipe in the axial direction. Due to the presence of this movement allowance space, the restrictor is prevented from being affected by the load from the flow path component during the initial stage linear expansion of the second fluid pipe section or during small linear expansion. This effectively prevents the restrictor from being continuously subjected to the load due to linear expansion. Meanwhile, the restrictor can restrict the excessive movement of the flow path component beyond the movement allowance space by abutting (or engaging) the restrictor with the outer surface of the flow path component section via the compressively deformed foam layer. Thus, in the flow path arrangement structure, adverse effects due to linear expansion, such as damage to the restrictor or removal of the base and lid of the bent section protection cover, caused by the linear expansion of the fluid pipe section, are prevented. Furthermore, the foam layer can be compressively deformed between the first end of the bent section and / or the first fluid pipe section and the restrictor so as to allow the bent section and the first fluid pipe section to move during the linear expansion of the second fluid pipe section, and therefore it is possible to impart heat insulating performance to the flow path component section without preventing the movement of the flow path component section in the movement allowance space. Therefore, the flow path arrangement structure of the present invention prevents adverse effects on the flow path arrangement structure (regulating device, bent portion protective cover) due to linear expansion of the flow path constituent members (second fluid pipe section), and enables more stable protection or installation of the flow path constituent members (especially the flow path constituent members that form a bent flow path).

[0029] According to the flow path arrangement structure of claim 10, in addition to the effect of the invention of claim 9, the surrounding part of the regulating tool can surround at least a part of the outer periphery of the flow path component member, thereby holding the flow path component member inside it. Furthermore, by providing a regulating part on the inner surface of the surrounding part, it is possible to effectively regulate the movement of the flow path component member due to linear expansion while holding the flow path component member inside the surrounding part. Furthermore, by deforming the foam layer so as to enter between the multiple protrusions, it is possible to prevent the foam layer from moving and shifting inside the surrounding part. Furthermore, by alternately forming pressed parts and non-pressed (or weakly pressed) parts in the circumferential direction of the surrounding part, it is possible to ensure the holding force while suppressing excessive crushing of the foam layer.

[0030] According to the flow path arrangement structure of claim 11, the restrictor is provided at the first end of the bent portion, and is installed so as to restrict movement of the bent portion beyond a predetermined movement amount associated with linear expansion of the fluid pipe portion on the second end side toward the bent portion in the longitudinal direction. The restrictor is provided with a restricting portion that abuts against the flow path component member to restrict movement of the flow path component member. Meanwhile, this restricting portion and the outer surface of the flow path component member opposite the second end are disposed apart from each other (when the flow path component member is not linearly expanded). That is, a movement allowance space is provided between them to allow movement of the flow path component member in a direction away from the second end portion associated with linear expansion in the axial direction of the fluid pipe portion on the second end portion. Due to the presence of this movement allowance space, the restrictor is prevented from being affected by a load from the flow path component member in the initial stage of linear expansion of the fluid pipe portion or in a small degree of linear expansion. This effectively prevents the restrictor from being continuously subjected to a load due to linear expansion. Meanwhile, the restrictor is capable of restricting excessive movement of the flow path component member beyond the movement allowance space by abutting the restricting portion with the outer surface of the flow path component member. Therefore, in the flow path arrangement structure, adverse effects due to linear expansion of the fluid pipe portion, such as damage to the regulator, are prevented from occurring. Therefore, the flow path arrangement structure of the present invention prevents adverse effects on the flow path arrangement structure (regulator) due to linear expansion of the flow path constituent members, and enables more stable installation of the flow path constituent members (particularly the flow path constituent members that constitute a curved flow path).

[0031] According to the flow path arrangement structure of claim 12, in addition to the effect of the invention of claim 11, it is possible to install a flow path component member made of a fluid pipe in which a bent portion and a fluid pipe portion are integrated.

[0032] According to the flow path arrangement structure of claim 13, in addition to the effects of the invention of claim 11 or 12, the fluid pipe section is housed in a straight fluid pipe section protective cover, and the bent section is housed in a bent section protective cover, so that the flow path constituent members can be effectively protected by the protective cover. Also, since the outer surface of the flow path constituent member opposite the second end and the inner surface of the fluid pipe section protective cover and / or the bent section protective cover are separated, the flow path constituent member can be protected by the protective cover without preventing the formation of a movement-permitting space between the restricting section and the outer surface of the flow path constituent member opposite the second end. [Brief description of the drawings]

[0033] [Figure 1] FIG. 1 is a schematic exploded view of a protective cover device according to one embodiment (first embodiment) of the present invention. [Diagram 2] 2 is a partially enlarged perspective view showing the protective cover of the protective cover device of FIG. 1; [Diagram 3] 2A and 2B are schematic perspective views of a restricting tool of the present embodiment constituting the protective cover device of FIG. 1, respectively, as viewed from the front and rear. [Figure 4] 4A is a front view, (b) a plan view, (c) a side view, (d) a rear view, and (e) a bottom view of the restraint device of FIG. 3. [Diagram 5] FIG. 4 is an exploded perspective view of the restriction tool of FIG. 3 . [Figure 6] FIG. 5 is a cross-sectional view of the restrictor shown in FIG. 4(b) taken along line AA. [Figure 7] FIG. 5 is a cross-sectional view of the restricting tool of FIG. [Figure 8] FIG. 2 is a schematic perspective view showing a flow path arrangement structure according to an embodiment of the present invention. [Figure 9] 9 is a partially enlarged perspective view of the vicinity of a restriction tool of the flow path arrangement structure of FIG. 8. [Figure 10]FIG. 9 is a plan view of the flow path arrangement structure of FIG. 8 as seen from the front wall side. [Figure 11] 9 is a bottom view of the flow path arrangement structure of FIG. 8 as viewed from the wall surface side. [Figure 12] 11 is a cross-sectional view taken along CC of the flow path arrangement structure of FIG. 10 . [Figure 13] 9 is a schematic diagram showing linear expansion in the longitudinal direction of the second fluid pipe section toward the bent section in the flow path arrangement structure of FIG. 8; [Figure 14] FIG. 14 is a schematic cross-sectional view of the flow path arrangement structure of FIG. [Figure 15] FIG. 4 is a schematic perspective view of a protective cover device (for an exposed corner) according to another embodiment of the present invention. [Figure 16] 16 is a schematic perspective view showing a flow path arrangement structure using the protective cover device of FIG. 15. [Figure 17] FIG. 6 is a schematic exploded view of a protective cover device according to another embodiment (second embodiment) of the present invention. [Figure 18] 18A and 18B are schematic perspective views of a restrictor of the present embodiment constituting the protective cover device of FIG. 17, respectively, as viewed from the front and rear. [Figure 19] 19A is a front view, (b) a plan view, (c) a side view, (d) a rear view, and (e) a bottom view of the restraint device of FIG. 18. [Figure 20] FIG. 19 is an exploded perspective view of the restriction tool of FIG. 18 . [Figure 21] FIG. 20 is a cross-sectional view taken along line DD of the restrictor shown in FIG. [Figure 22] FIG. 2 is a schematic perspective view showing a flow path arrangement structure according to an embodiment of the present invention. [Figure 23] 23 is a partially enlarged perspective view of the vicinity of a restriction tool of the flow path arrangement structure of FIG. 22. [Figure 24] 23 is a plan view of the flow path arrangement structure of FIG. 22 as seen from the front wall side. [Diagram 25] 23 is a bottom view of the flow path arrangement structure of FIG. 22 as viewed from the wall surface side. [Figure 26] 25 is an E-E cross-sectional view of the flow path arrangement structure of FIG. 24 . [Figure 27] 23 is a schematic diagram showing linear expansion in the longitudinal direction of the second fluid pipe section toward the bent section in the flow path arrangement structure of FIG. 22. [Figure 28] 28 is a schematic cross-sectional view of the flow path arrangement structure of FIG. 27. [Figure 29] FIG. 11 is a schematic exploded perspective view showing a modified example of the protective cover device of the present invention. [Diagram 30] FIG. 13 is a schematic perspective view showing a modified example of the flow path arrangement structure of the present invention. [Diagram 31] 1A to 1C are schematic diagrams showing protective cover devices and flow path arrangement structures according to an embodiment of the present invention and modified examples thereof; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0034] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that the shapes of the figures referred to in the following description are conceptual or schematic diagrams for explaining preferred shape and dimensions, and the dimensional ratios do not necessarily match the actual dimensional ratios. In other words, the present invention is not limited to the dimensional ratios in the drawings. Furthermore, the directions of up, down, left, and right in the present invention are merely concepts indicating relative positions, and it goes without saying that these can be used interchangeably. Furthermore, in this specification, the direction approaching and receding from a wall surface may be referred to as the up and down direction, regardless of whether the wall surface is a horizontal surface or a vertical surface.

[0035] The protective cover device 100 according to one embodiment of the present invention is a device that protects a flow path component 11 installed on a wall surface of a structure by arranging it inside. The flow path arrangement structure 10 according to the present embodiment is a structure in which a flow path component 11 having a flow path that is bent relative to a structure is arranged. In this embodiment, the flow path component 11 has at least a pipe joint 13 that forms a bent portion that constitutes a bent flow path, a first fluid pipe 14 that forms a first fluid pipe portion that extends from a first end of the bent portion along a predetermined piping path, and a second fluid pipe 15 that forms a second fluid pipe portion that extends from a second end of the bent portion along a predetermined piping path, and constitutes a flow path of a fluid. Here, the pipe joint 13 corresponds to the bent portion that constitutes the bent flow path of the flow path component 11, and the first fluid pipe 14 and the second fluid pipe 15 correspond to the fluid pipe portion that constitutes the linear flow path of the flow path component 11. This flow path component 11 constitutes a bent flow path to a hot and cold water mixing valve that supplies cold water and hot water to be installed in a bathroom. The first fluid pipe 14 and the second fluid pipe 15 are straight resin fluid pipes used for at least hot water supply, and undergo linear expansion in the pipe axis direction due to heat when supplying hot water. In contrast, the protective cover device 100 of this embodiment is configured to prevent adverse effects on the protective cover device 100 and / or the flow path arrangement structure 10 due to linear expansion due to heat when supplying hot water to the fluid pipes. The protective cover device 100 of this embodiment and its components will be described below with reference to Figs. 1 to 7.

[0036] FIG. 1 is a schematic exploded perspective view of a protective cover device 100 according to an embodiment of the present invention. As shown in FIG. 1, the protective cover device 100 according to an embodiment of the present invention includes a bent portion protective cover 110 that forms an arrangement space for arranging a bent portion of a flow path component 11 therein, a fluid pipe portion protective cover 120 that is connected to an end of the bent portion protective cover 110 and that arranges and protects a first and second fluid pipe portion therein, and a restricting tool 130 that is installed at the first and second ends of the bent portion (or the ends of the first and second fluid pipe portions). In this protective cover device 100, the front surface of the restricting tool 130 is installed so as to face the bent portion protective cover 110 side. In this embodiment, each component is made of a synthetic resin material, but the present invention is not limited to this, and any material such as metal may be selected.

[0037] First, the bent portion protection cover 110 and the fluid pipe portion protection cover 120 of this embodiment will be described with reference to Fig. 2. Fig. 2 is a schematic perspective view showing the bent portion protection cover 110 and the fluid pipe portion protection cover 120.

[0038] As shown in FIG. 2, the bent portion protection cover 110 corresponds to the bend of the L-shaped pipe joint 13 and includes an L-shaped base 111 fixed to the wall surface of a structure, and an L-shaped lid 112 assembled to the base 111. The bent portion protection cover 110 forms an arrangement space in which the pipe joint 13 (bent portion) is arranged inside when the base 111 and the lid 112 are assembled to each other. The bent portion protection cover 110 is configured to determine the arrangement position of the pipe joint 13 on the wall surface. In other words, the bent portion protection cover 110 has a joint positioning portion. This joint positioning portion is an inner wall surface or a rib of the bent portion protection cover 110. On the other hand, the fluid pipe portion protection cover 120 corresponds to the straight fluid pipes 14, 15 and includes a base member 121 fixed to the wall surface of a structure, and a cover member 122 assembled to the base member 121. The fluid pipe section protective cover 120 forms a piping path therein for arranging the fluid pipes 14, 15 (fluid pipe section) when the base member 121 and the cover member 122 are assembled together. The fluid pipe section protective cover 120 is configured to determine the arrangement positions of the fluid pipes 14, 15 on the wall surface. The pipe joint 13 and the fluid pipes 14, 15 are preferably held by the bent section protective cover 110 and the fluid pipe section protective cover 120 so that the pipe axes are aligned with the radial center of the arrangement space.

[0039] Each end of the bent portion protection cover 110 is configured to be able to connect the end of the fluid pipe portion protection cover 120 without any gaps. In particular, each end of the base 111 is provided with a connection protrusion 114 protruding from each end in the axial direction. On the other hand, the end of the base member 121 is provided with a connection recess 123 into which the connection protrusion 114 can be fitted. By inserting the connection protrusion 114 of the base 111 into the connection recess 123 of the base member 121, the bent portion protection cover 110 and the fluid pipe portion protection cover 120 can be connected without any gaps while being aligned in the axial direction. In this embodiment, as described later, a restricting tool 130 is provided between the base 111 and the base member 121. The connection protrusion 114 and the connection recess 123 can also function as a connected part to which the restricting tool 130 is connected.

[0040] Furthermore, fixing holes 115 are drilled in the bottom wall of the base 111 of the bent portion protection cover 110 at the center and both end portions of the bent portion for fixing the base 111 to a wall surface with screws. Furthermore, a plurality of connecting pieces 116 for connecting the lid body 112 are formed on the outer periphery of the base 111 of the bent portion protection cover 110. The lid body 112 can be fitted to the base 111 via the plurality of connecting pieces 116. The connecting pieces 116 at the end of the base 111 form abutment steps 117 (connected parts) for positioning and arranging a different type of restricting tool 230 (see FIG. 18, etc.).

[0041] The base member 121 of the fluid pipe protective cover 120 is formed with a pair of outer wall portions 124 erected from both ends of the bottom wall in the width direction, and a pair of inner wall portions 125 erected from the inside of the pair of outer wall portions 124 in the width direction of the bottom wall. The outer wall portions 124 have a height sufficient to cover the side surfaces of the inserted fluid pipes 14, 15. On the other hand, the inner wall portions 125 are lower than the outer wall portions 124 and extend so as to support the lower surfaces of the inserted fluid pipes 14, 15. The outer wall portions 124 and the inner wall portions 125 hold the fluid pipes 14, 15 from three directions, and function as positioning portions that determine the axial positions of the pipe joints 13 and / or the fluid pipes 14, 15. Note that, instead of or in addition to the fluid pipe section protective cover 120, a positioning portion that holds the pipe joint 13 and determines the axial position of the pipe joint 13 and / or the fluid pipes 14, 15 may be formed in the bent section protective cover 110. Also, an engaging piece 126 is formed to protrude from the side edge of the base member 121, and can be connected to an engaged piece 127 formed on the inner surface of the side wall of the covering member 122. The base member 121 can be fixed to the wall surface by penetrating its bottom wall with a screw.

[0042] In this embodiment, the lengths of the base 111 and the lid 112 of the bent portion protective cover 110 in the flow path direction are approximately the same. On the other hand, the length of the cover member 122 is greater than the length of the base member 121 of the fluid pipe portion protective cover 120 so that the restrictor 130 arranged between the base 111 of the bent portion protective cover 110 and the base member 121 of the fluid pipe portion protective cover 120 can be covered. However, in the present invention, the lengths of the base member 121 and the cover member 122 of the fluid pipe portion protective cover 120 in the flow path direction may be approximately the same, and the length of the lid 112 may be greater than the length of the base 111 of the bent portion protective cover 110.

[0043] Next, the restraint tool 130 of this embodiment will be described with reference to Figs. 3 to 7. Figs. 3(a) and (b) are a front perspective view and a rear perspective view of the restraint tool 130. Figs. 4(a) to (e) are a front view, a plan view, a side view, a rear view and a bottom view of the restraint tool 130. Fig. 5 is an exploded perspective view of the restraint tool 130. Fig. 6 is an AA cross-sectional view of the restraint tool 130. Fig. 7 is a BB cross-sectional view of the restraint tool 130.

[0044] The restricting device 130 holds the flow path forming member 11 that constitutes the flow path extending in the flow path direction, and is installed at least at the first end of the bent portion (the first end 13a of the pipe joint 13 or the end of the first fluid pipe 14) and is configured to restrict movement of the bent portion and the first fluid pipe portion that exceeds a predetermined movement amount due to linear expansion in the longitudinal direction of the second fluid pipe portion toward the bent portion. Here, in the restricting device 130, the direction in which the flow path forming member 11 passes (the left-right direction in FIG. 4(c)) is defined as the flow path direction, the direction along the wall surface and perpendicular to the flow path direction (the left-right direction in FIG. 4(a)) is defined as the width direction, and the direction perpendicular to the wall surface (the up-down direction in FIG. 4(a)) is defined as the height direction.

[0045] The regulator 130 includes a regulator body 131 fixed to the wall surface to which the base 111 of the bent portion protection cover 110 is fixed, and a regulator 141 including an attachment portion (locking claw 143) attached to the attachment portion (groove portion 133) of the regulator body 131. As shown in Figs. 3 to 5, the regulator body 131 is formed in a plate shape so as to be fixed to the wall surface and to support the flow path component 11 from the wall surface side. On the other hand, the regulator 141 is made of a ring-shaped belt with an open end. The regulator 141 has a holding portion 142 extending in the circumferential direction with a predetermined diameter. In this embodiment, the rear edge portion of the lower half of the holding portion 142 is cut out at a substantially right angle, and a step portion is formed between the upper half and the lower half. In other words, the upper half located in the middle portion of the holding portion 142 is longer in the flow path direction and has higher rigidity.

[0046] Further, at each end of the holding portion 142, an attachment portion for attaching to the attachment portion of the regulator body 131 is provided. As shown in FIG. 5, the attachment portion is a pair of locking claws 143 extending from the end of the holding portion 142 toward the outside in the width direction in a substantially horizontal direction. The pair of locking claws 143 are plate pieces extending in opposite directions in the width direction. The regulator body 131 and the regulator 141 in the attached state are configured to cooperate with each other to surround and hold the outer periphery of the flow path component 11 (the pipe joint 13 or the fluid pipes 14, 15). In other words, the regulator 130 has an enclosing portion that surrounds at least a part of the outer periphery of the flow path component 11. As shown in FIG. 6, the enclosing portion has an inner periphery of a substantially circular shape, and its inner diameter is larger than the outer diameter of the fluid pipes 14, 15 to be held.

[0047] The regulator body 131 is provided with a fixing portion 132 for fixing the regulator 130 to a wall surface at approximately the center in the flow path direction and the width direction. The fixing portion 132 is a screw hole through which a screw passes. The regulator body 131 is also provided with a pair of grooves 133 as attachment portions corresponding to the attachment portions of the regulator 141. The pair of grooves 133 are continuous along the flow path direction and have through holes 133a that open facing each other toward the inside in the width direction. The grooves 133 are also provided with an introduction port 133b that opens one end side (front end) of the through hole 133a in the flow path direction and introduces the locking claw 143 into the grooves 133 by the movement of the regulator 141 in the flow path direction, and a locking portion 134 that locks the locking claw 143 introduced through the introduction port 133b into the grooves 133. The through hole 133a has an opening width and an opening length that allow the locking claw 143 to pass through from the width direction. The inlet 133b opens on the front side and has a size that allows the locking claw 143, which slides along the flow path direction, to be introduced into the groove 133. On the other hand, the end (rear end) of the groove 133 opposite the inlet 133b is closed. The locking portion 134 is a locking surface that faces downward within the groove 133 so as to engage with the upper surface of the locking claw 143.

[0048] That is, as shown in Fig. 5, the regulator 141 is slid along the flow path direction from the front side (i.e., the inlet 133b side) of the regulator body 131, and the locking claws 143 of the regulator 141 are inserted into the pair of grooves 133 through the pair of inlets 133b, so that the regulator 141 can be attached to the regulator body 131. In the attached state, as shown in Fig. 6, the locking claws 143 introduced into the grooves 133 through the inlets 133b are arranged to pass through the through holes 133a, and are locked in the grooves 133 by the locking portions 134. In this embodiment, the attachment direction in which the regulator 141 is slid is the same as the flow path direction along the tube axis of the flow path forming member 11 to be held.

[0049] 6, the restrictor main body 131 is provided with a displacement restricting portion 135 that restricts the displacement of each of the locking claws 143 so as to separate from the locking portion 134 through the through hole 133a of each of the grooves 133 when the pair of mounting portions are attached to the pair of attached portions. The displacement restricting portion 135 is disposed at a position facing each end of the holding portion 142. The displacement restricting portion 135 is disposed on the inner side in the width direction of each end of the holding portion 142, and is formed on a surface facing the outer side in the width direction of an erect wall erected in the height direction. That is, as described later (see FIG. 14), when the regulating body 141 is deformed by receiving a load from the flow path component 11 and the end of the holding portion 142 moves inward in the width direction, the abutment surface 144 (the surface opposite to the protruding direction of the locking claw 143) facing inward in the width direction at the end of the holder 143 abuts against the displacement regulating portion 135 of the standing wall, thereby restricting the locking claw 143 from completely coming off the groove portion 133 through the through hole 133a. Then, the tip end in the height direction of the standing wall (i.e., the upper end of the displacement regulating portion 135) is at a height position farther away from the wall surface than the locking portion 134. This allows the abutment surface 144 of the end of the holder 143 to abut against the displacement regulating portion 135 reliably, and as a result, the regulating body 141 can be stably prevented from coming off the regulator main body 131.

[0050] 4(a) and 6, the regulation tool main body 131 includes a pair of outer walls 136 positioned outside the holding portion 142 in the width direction of the regulation tool 130 in the attached state and erected to a position higher than the erected wall. The pair of outer walls 136 sandwich the holding portion 142 from the outside in the width direction, thereby functioning as guide portions that guide the sliding movement of the regulation body 141 when the regulation body 141 is attached to the regulation tool main body 131. The pair of outer walls 136 also limit excessive distortion of the regulation body 141 in the radially outward direction, thereby making it possible to stably maintain the attachment of the regulation body 141 to the regulation tool main body 131.

[0051] Further, as shown in Figs. 4(c), 5 and 7, the restrictor body 131 is provided with a restricting wall 137 connected to the rear of the outer wall 136 in the flow path direction. Here, the outer wall 136 and the restricting wall 137 are connected to each other to form an L-shaped wall in a plan view. The restricting wall 137 closes the rear end of the groove portion 133 as shown in Fig. 7. Also, the front surface of the restricting wall 137 can abut against the end surface of the holding portion 142 of the restrictor 141 facing rearward. That is, the restricting wall 137 functions as an excessive movement restricting portion that restricts excessive sliding movement of the restrictor 141 in the attachment direction when the locking claw 143 is introduced into the groove portion 133 through the introduction port 133b. In the attached state of the regulating device 130, as shown in Figures 4(c) and 7, the front surface of the regulating wall 137 abuts against the rear end surface of the regulating body 141, and the step portion (lower surface) is closely opposed between the upper surface of the regulating wall 137 and the upper and lower halves of the holding portion 142.

[0052] As shown in FIG. 4(b) and FIG. 5, the regulator body 131 is provided with a pair of elastic claws 138 arranged on the front side of the introduction port 133b of the pair of grooves 133 in the attachment direction. The pair of elastic claws 138 are arranged at positions where they interfere with the locking claws 143 that slide toward the introduction port 133b in the original position. When the regulator 141 is attached to the regulator body 131, when the locking claws 143 that move in the attachment direction abut against the elastic claws 138, they are elastically deformed so as to retract inward in the width direction. On the other hand, when the locking claws 143 that move in the separation direction opposite to the attachment direction abut against the elastic claws 138, the elastic claws 138 act to lock the locking claws 143 without elastic deformation. That is, the elastic claws 138 function as a separation movement restricting portion that allows the regulator 141 to move in the attachment direction while restricting the regulator 141 to move in the separation direction opposite to the attachment direction. Therefore, in the attached state of the regulating device 130, the regulating wall 137 as the excessive movement regulating portion and the elastic claw 138 as the separation movement regulating portion work together to position and maintain the regulating body 141 in the appropriate position on the regulating device main body 131 in the attachment direction.

[0053] The restrictor 130 is configured to be freely connected to a connection protrusion 114 (connected portion) provided on the base 111 of the bent portion protective cover 110 and / or a connection recess 123 provided on the base member 121 of the fluid pipe portion protective cover 120. In particular, as shown in FIG. 3(b) and FIG. 4(e), a connection recess 139a that can be fitted into the connection protrusion 114 of the base 111 is formed on the front edge of the restrictor body 131. On the other hand, a connection protrusion 139b that can be fitted into the connection recess 123 of the base member 121 is formed on the rear edge of the restrictor body 131. That is, in the flow path arrangement structure 10 described later, the restrictor 130 is installed between the bent portion protective cover 110 and the fluid pipe portion protective cover 120 so that one end of the restrictor 130 in the flow path direction is connected to the base 111 of the bent portion protective cover 110 and the other end of the flow path direction is connected to the base member 121 of the fluid pipe portion protective cover 120.

[0054] Next, referring to Figs. 8 to 12, a flow path arrangement structure 10 constructed by the protective cover device 100 and the flow path component 11 of this embodiment will be described. Fig. 8 is a schematic perspective view showing the flow path arrangement structure 10 of one embodiment of the present invention. Fig. 9 is a partially enlarged perspective view of the flow path arrangement structure 10. Fig. 10 is a plan view of the flow path arrangement structure 10 as viewed from the wall surface side. In Figs. 8 to 10, a part of the cover body 112 and the cover member 122 are cut out in order to depict the internal structure for convenience of explanation. Fig. 11 is a bottom view of the flow path arrangement structure 10 as viewed from the wall surface side. Fig. 12 is a CC cross-sectional view of the flow path arrangement structure 10 of Fig. 10. Here, the flow path arrangement structure 10 is a structure in which a flow path component 11 having a flow path that bends with respect to the wall surface of the structure is arranged. Meanwhile, in the flow path arrangement structure 10, a structure in which the flow path component 11 is held by the holding portion 142 of the regulating tool 130 against the wall surface is called a holding structure. This holding structure does not necessarily have to include a protective cover. In the present invention, the wall surface on which the flow path forming member 11 is installed does not necessarily have to be a single plane, and may be composed of a plurality of intersecting surfaces.

[0055] The flow path arrangement structure 10 is a structure in which a flow path component 11 is arranged on one wall surface using the above-mentioned protective cover device 100. That is, the flow path arrangement structure 10 includes a flow path component 11 having a curved flow path, a bent portion protective cover 110 forming an arrangement space inside in which the bent portion of the flow path component 11 is arranged, fluid pipe portion protective covers 120 respectively connected to the ends of the bent portion protective cover 110, and a restricting tool 130 installed at the end of the bent portion. The flow path component 11 has a pipe joint 13 forming a bent portion that constitutes the bent flow path, a first fluid pipe 14 extending from a first end 13a of the pipe joint 13, and a second fluid pipe 15 extending from a second end 13b of the pipe joint 13. The first fluid pipe 14 forms a first fluid pipe section extending from a first end of the bent portion of the flow path arrangement structure 10, and the second fluid pipe 15 forms a second fluid pipe section extending from a second end of the bent portion of the flow path arrangement structure 10. In this embodiment, the pipe joint 13 is an L-shaped elbow, and the first fluid pipe 14 and the second fluid pipe 15 are straight pipes. The diameter of the pipe joint 13 is larger than the diameters of the first fluid pipe 14 and the second fluid pipe 15, and the first fluid pipe 14 and the second fluid pipe 15 are inserted into the ends 13a and 13b of the pipe joint 13. As shown in Figs. 8 and 9, the bent portion protection cover 110 is disposed inside to protect the bent portion, and the two fluid pipe protection covers 120 are disposed inside to protect the first fluid pipe section and the second fluid pipe section, respectively.

[0056] As shown in FIG. 9, the restricting tool 130 is installed at least on the first end side of the bent portion of the flow path forming member 11. In this embodiment, another restricting tool 130 is also installed on the second end side of the bent portion of the flow path forming member 11. The first end (second end) of the bent portion is a concept that includes not only the first end 13a (second end 13b) of the pipe joint 13 but also the end of the first fluid pipe 14 (second fluid pipe 15) connected thereto. In addition, the first end (second end) side of the bent portion of the flow path forming member 11 means a part that forms a flow path extending on the first end 13a (second end 13b) side of the pipe joint 13, and is a concept that includes a part away from the first end 13a (second end 13b) of the pipe joint 13. In this embodiment, the restricting tool 130 is installed at a position beside the first end 13a (second end 13b) of the pipe joint 13 to hold the end of the first fluid pipe 14 (second fluid pipe 15). However, in the present invention, the regulating device 130 may be installed to hold the first end 13a (second end 13b) of the pipe fitting 13 or the central portion (position away from the end) of the first fluid pipe 14 (second fluid pipe 15).

[0057] As shown in FIG. 10, the regulator 130 is installed between the bent portion protection cover 110 and the fluid pipe portion protection cover 120. Hereinafter, one end (first end) of the bent portion will be described, but the other end (second end) is similar. In particular, the regulator body 131 of the regulator 130 is arranged so as to connect the base 111 of the bent portion protection cover 110 and the base member 121 of the fluid pipe portion protection cover 120 in the flow path direction. As shown in FIG. 11, the connection protrusion 114 protruding from the base 111 in the flow path direction is inserted into the connection recess 139a of the regulator body 131, and the connection protrusion 139b protruding from the regulator body 131 in the flow path direction is inserted into the connection recess 123 of the base member 121, so that the base 111, the base member 121, and the regulator body 131 are connected in a state of being aligned along the flow path direction. The base 111, the base member 121 and the restrictor body 131 are each fixed to a wall surface with a screw. In this embodiment, the restrictor body 131 directly fixed to the wall surface is fixed adjacent to the base 111 of the bent portion protective cover 110 and the base member 121 of the fluid pipe portion protective cover 120. In other words, since the restrictor 130 is close to the end of the bent portion protective cover 110, it is advantageous to restrict the movement of the flow path component member 11.

[0058] 10, a lid 112 is attached to a base 111 of the bent portion protective cover 110, and a cover member 122 is attached to a base member 121 of the fluid pipe portion protective cover 120, thereby protecting both the flow path forming member 11 and the regulator 130 from being exposed to the wall surface. In this embodiment, the regulator 130 is fixed to the wall surface outside the bent portion protective cover 110 when viewed from the wall surface, and the regulator main body 131 and the regulator 141 are entirely housed in the fluid pipe portion protective cover 120 with the regulator 130 holding the first fluid pipe 14 (or the second fluid pipe 15). In other words, the cover member 122 of the fluid pipe portion protective cover 120 extends beyond the edge of the base member 121 in the flow path direction, thereby covering the regulator 130 entirely from the wall surface. 12, the outer side surface of the restrictor body 131 in the width direction engages with the engaged piece 127 of the cover member 122, so that the cover member 122 is also fitted to the restrictor body 131. That is, the restrictor 130 is protected from being exposed to the outside in its entirety, and the aesthetic appearance of the flow path arrangement structure 10 is prevented from being damaged by the exposure of the restrictor 130. As another embodiment of the present invention, the restrictor 130 may be fixed to the wall surface on the inside of the bent portion protective cover 110 (or the outside of the fluid pipe portion protective cover 120) when viewed from the wall surface, and the restrictor body 131 and the restrictor 141 may be entirely accommodated in the bent portion protective cover 110 with the restrictor 130 holding the first fluid pipe 14 (or the second fluid pipe 15). In this case, the lid 112 of the bent portion protection cover 110 extends beyond the edge of the base 111 in the flow path direction, so that the entire regulator 130 can be covered from the wall surface.

[0059] As shown in Fig. 12, in the cross-sectional view of the first end of the bent portion, a restrictor body 141 is attached to a restrictor body 131 fixed to a wall surface via a fixing portion 132, and the restrictor body 131 and the restrictor body 141 cooperate to form an enclosing portion, which encloses and holds the first fluid pipe 14 of the flow path component 11. It is possible to make the entire structure smaller by enclosing the first fluid pipe 14 (or the second fluid pipe 15) with the enclosing portion rather than enclosing the end of the pipe joint 13 with the enclosing portion. However, the enclosing portion may be configured to enclose the end of the pipe joint 13, or may be configured to enclose both the end of the pipe joint 13 and the first fluid pipe 14 (or the second fluid pipe 15). In addition, since the regulating device 130 is installed so as to surround the first fluid pipe 14 (or the second fluid pipe 15) on the side of the pipe fitting 13, it is possible to effectively suppress movement of the pipe fitting 13 due to linear expansion of the second fluid pipe 15 (or the first fluid pipe 14) on the side different from the side being held (compared to holding it at a position away from the pipe fitting 13).

[0060] A restricting portion 146 is provided on the inner surface of the holding portion 142 (inner surface of the surrounding portion) of the restricting body 141 to restrict movement of the flow path forming member 11 beyond a predetermined movement amount associated with linear expansion in the longitudinal direction of the second fluid pipe portion toward the bent portion side. Here, the outer surface of the flow path forming member 11 on the opposite side of the second end of the bent portion is the outer surface facing the right side of the first fluid pipe 14 in FIG. 12, and the direction of linear expansion of the second fluid pipe portion (or the second fluid pipe 15) is the right direction in FIG. 12. The restricting portion 146 is located away from the outer surface on the opposite side of the second end of the flow path forming member 11 so as to form a movement allowance space 147 between the outer surface. In this embodiment, the inner diameter of the restricting body 141 is larger than the outer diameter of the first fluid pipe 14 whose pipe axis is positioned by the fluid pipe portion protective cover 120 (which may be a bent portion protective cover), so that the entire outer periphery of the first fluid pipe 14 and the entire inner periphery of the surrounding portion by the restricting body 141 are separated from each other. However, in the present invention, in order to form a movement-allowing space 147 that alleviates the force of linear expansion, it is sufficient that the regulating portion 146 and the outer surface opposite the second end of the fluid pipe 14 are at least separated from each other, and the regulating body 141 and the first fluid pipe 14 may abut in other circumferential parts.

[0061] 13 is a schematic diagram showing the flow path arrangement structure 10 when the second fluid pipe section (or the second fluid pipe 15) of the flow path component 11 linearly expands in the longitudinal direction toward the bent section. In the flow path arrangement structure 10, it is assumed that when hot water passes through the second fluid pipe 15, the second fluid pipe 15 is heated and linearly expands so as to extend in the longitudinal direction. Here, only the linear expansion of the second fluid pipe section is described, but it goes without saying that the first fluid pipe section can also linearly expand in the same way. In this case, the restrictor 130 provided at the second end can function in the same way as the restrictor 130 provided at the first end.

[0062] As shown in FIG. 13, when the second fluid pipe section linearly expands, the bent section and the first fluid pipe section of the flow path component 11 move to the opposite side of the second end of the bent section (i.e., the right side in FIG. 13). In a conventional flow path arrangement structure in which the restrictor 130 is not arranged, the bent section and / or the first fluid pipe section are pressed with a strong force against the inner surface of the bent section protective cover 110 and / or the fluid pipe section protective cover 120, and the cover body 112 and / or the covering member 122 are easily removed from the base 111 and / or the base member 121. In contrast, in the flow path arrangement structure 10 of the present embodiment, as shown in FIG. 14, when the second fluid pipe section linearly expands, the first fluid pipe section (or the bent section) moves, as an initial movement, to the opposite side of the second end of the bent section through the movement allowance space 147 inside the surrounding section formed by the restrictor 130. At this time, the movement direction of the first fluid pipe section is not limited to the horizontal direction to the wall surface, and there is arbitrary variation in the direction perpendicular to the wall surface. Therefore, in FIG. 14, the moving direction (or vector) of the first fluid pipe section has a vertical component moving away from the wall surface, in addition to a horizontal component.

[0063] Then, the first fluid pipe section (or the bent section) moves in the movement allowance space 147 in accordance with the linear expansion of the second fluid pipe section, and then, as shown in FIG. 14, the outer surface opposite to the second end of the first fluid pipe section abuts against the restricting section 146 located on the inner surface of the surrounding section. The restricting section 146 abuts against the outer surface of the first fluid pipe section to function to restrict excessive movement of the bent section and / or the first fluid pipe section beyond the movement allowance space 147. At this time, the restricting section 146 receives a load of linear expansion from the flow path forming member 11, but the movement allowance space 147 allows the initial movement during linear expansion, so that the restricting section 146 is prevented from being affected by the load due to the linear expansion in the initial stage, and the influence of the load is weakened. Although not shown, in the case of a relatively small linear expansion in which the bent section and / or the first fluid pipe section does not exceed the movement allowance space 147, the restricting section 146 does not abut against the outer surface of the first fluid pipe section, so that the restricting tool 130 does not receive a load from the flow path forming member 11.

[0064] Furthermore, in the flow path arrangement structure 10 (or the holding structure) of this embodiment, the regulating body 141 is firmly attached to the regulating tool main body 131 (at least in a direction perpendicular to the flow path direction). For example, referring to the locking claw 143 on the left side of FIG. 14, when the regulating portion 146 receives a strong load in an oblique direction away from the wall surface, the regulating body 141 is pulled in the radial direction or deformed, and the locking claw 143 is displaced in a direction to separate from the groove portion 133 through the through hole 133a. At this time, the displacement regulating portion 135 provided on the regulating tool main body 131 is disposed at a position facing the displaced end portion of the holding portion 142. As a result, the end portion of the holding portion 142 displaced inward in the width direction is locked by the displacement regulating portion 135 through the abutment surface 144, so that the locking claw 143 is restricted from separating through the through hole 133a of the groove portion 133. That is, in the flow path arrangement structure 10 (or holding structure), even if the flow path forming member 11 moves due to thermal expansion or the like and a force is applied to the restricting tool 130, the displacement restricting portion 135 acts on the end of the holding portion 142 so as to restrict the displacement of the locking claw 143, thereby effectively preventing the locking claw 143 from coming off through the through hole 133a of the groove portion 133. As a result, the retention of the flow path forming member 11 by the restricting tool 130 is stably maintained.

[0065] In other words, the flow path arrangement structure 10 of this embodiment provides a movement-permitting space 147 between the regulating portion 146 and the outer surface of the flow path constituent member 11, thereby alleviating the load caused by the linear expansion of the fluid pipe portion, and further, the displacement regulating portion 135 regulates the displacement of the locking claw 143 in the detachment direction, thereby firmly maintaining the attachment state of the regulating device main body 131 and the regulating body 141, thereby enabling stable holding of the flow path constituent member 11.

[0066] Next, a method for constructing the flow path arrangement structure 10 will be described. The installation position for installing the flow path component 11 to the bent flow path is specified on the wall surface of the structure, and the base 111 of the bent portion protective cover 110, the base member 121 of the fluid pipe protective cover 120, and the regulator body 131 are fixed to the wall surface with screws or the like in a connected state according to the installation position. The pipe joint 13 of the flow path component 11 is positioned and arranged on the base 111. Then, the ends of the first fluid pipe 14 and the second fluid pipe 15 are connected to the first end 13a and the second end 13b of the pipe joint 13, respectively, and the first fluid pipe 14 and the second fluid pipe 15 are positioned and arranged between the outer wall portion 124 of the base member 121. The first fluid pipe 14 and the second fluid pipe 15 are held by the outer wall portion 124 and the inner wall portion 125, so that the pipe axis of the flow path component member 11 can be positioned at approximately the center of the arrangement space of the bent portion protective cover 110. At this time, the respective ends of the first fluid pipe 14 and the second fluid pipe 15 are arranged on the restrictor main body 131 at both ends of the bent portion. Then, by attaching the restrictor 141 to the restrictor main body 131 so as to surround the respective ends of the first fluid pipe 14 and the second fluid pipe 15, a holding structure that holds the flow path component member 11 against the wall surface can be constructed. Next, the cover body 112 and the cover member 122 are assembled to the base 111 and the base member 121, respectively, so that the flow path arrangement structure 10 can be constructed.

[0067] In the above embodiment of the flow path arrangement structure 10, the flow path component member 11 bent in an L-shape is arranged on one wall surface, but the protective cover device and flow path arrangement structure of the present invention may be configured to be provided at a corner portion where two wall surfaces intersect. FIG. 15 is a schematic perspective view of a protective cover device 100' for installation at a corner portion. The protective cover device 100' includes a bent portion protective cover 110', a fluid pipe portion protective cover 120, and a regulating tool 130. Here, the bent portion protective cover 110' is configured to be fixed to the corner portion. That is, the fixing surface of the base 111' of the bent portion protective cover 110' is bent to form two orthogonal planes, so that the bent portion protective cover 110' can be fixed to two orthogonal wall surfaces via the corner portion. The protective cover device 100' is the same as the protective cover device 100 in the configuration other than the bent portion protective cover 110'. FIG. 16 shows a flow path arrangement structure 10' arranged at a corner portion. As shown in Fig. 16, the protective cover device 100' protects and holds the flow path component member 11 laid at the protruding corner. In the present invention, the protective cover device may include a plurality of bent portion protective covers of different shapes, such as the bent portion protective cover 110 and the bent portion protective cover 110'. In other words, the protective cover device can install a flow path arrangement structure on structures of various shapes by selectively using the bent portion protective covers 110 and 110' of different shapes.

[0068] The following describes the effects of the protective cover device 100 (flow passage arrangement structure 10) according to one embodiment of the present invention.

[0069] According to the protective cover device 100 of this embodiment, the bent portion protective cover 110 is configured to be disposed inside and protect the bent portion of the flow path component 11. The restricting tool 130 is provided at least on the first end side of the first end and the second end of the bent portion, and is installed so as to restrict the movement of the bent portion and the first fluid pipe portion beyond a predetermined movement amount caused by the linear expansion of the second fluid pipe portion in the longitudinal direction toward the bent portion side. The restricting tool 130 is provided with a restricting part 146 that abuts against the bent portion and / or the first fluid pipe portion and restricts the movement of the bent portion and the first fluid pipe portion. Meanwhile, the restricting part 146 and the outer surface of the flow path component 11 on the opposite side of the second end are disposed apart (when the flow path component 11 is not linearly expanded). That is, a movement allowance space 147 is provided between them to allow the movement of the flow path component 11 in the direction away from the second end caused by the linear expansion of the second fluid pipe portion in the axial direction. Due to the presence of this movement allowance space 147, the restrictor 130 is prevented from being affected by the load from the flow path component 11 in the initial stage of linear expansion of the second fluid pipe section or in the case of small linear expansion. This effectively prevents the restrictor 130 from being continuously subjected to the load due to linear expansion. On the other hand, the restrictor 139 can restrict the excessive movement of the flow path component 11 beyond the movement allowance space 147 by the abutment of the restrictor 146 with the outer surface of the flow path component 11. Therefore, the protective cover device 100 can prevent the occurrence of adverse effects due to linear expansion, such as damage to the restrictor 130 or removal of the base 111 and the cover 112 of the bent portion protective cover 110, due to the linear expansion of the fluid pipe section. Therefore, the protective cover device 100 of this embodiment prevents adverse effects on the protective cover device 100 due to the linear expansion of the flow path component 11 (second fluid pipe section), and enables the protection or installation of the flow path component 11 that constitutes the bent flow path in a more stable manner.

[0070] Next, a description will be given of a protective cover apparatus 200 having a restraining tool 230 according to another embodiment (second embodiment) of the present invention. The components of the protective cover apparatus 200 are the same as those of the protective cover apparatus 100 except for the restraining tool 230.

[0071] FIG. 17 is a schematic exploded perspective view of a protective cover device 200 according to an embodiment of the present invention. As shown in FIG. 17, the protective cover device 200 according to the second embodiment of the present invention includes a bent portion protective cover 110 that forms an arrangement space for arranging the bent portion of the flow path component 11 therein, a fluid pipe portion protective cover 120 that is connected to an end of the bent portion protective cover 110 and that arranges and protects the first and second fluid pipe portions therein, and a restricting tool 230 that is installed at each end of the bent portion. In this protective cover device 200, the rear surface (back surface) of the restricting tool 230 is installed so as to face the bent portion protective cover 110 side. In addition, in the protective cover device 200 according to this embodiment, the lengths of the base member 121 and the cover member 122 of the fluid pipe portion protective cover 120 in the flow path direction are approximately the same.

[0072] Next, the restraint tool 230 of this embodiment will be described with reference to Figs. 18 to 21. Figs. 18(a) and (b) are a front perspective view and a rear perspective view of the restraint tool 230. Figs. 19(a) to (e) are a front view, a plan view, a side view, a rear view, and a bottom view of the restraint tool 230. Fig. 20 is an exploded perspective view of the restraint tool 230. Fig. 21 is a DD cross-sectional view of the restraint tool 230.

[0073] The restricting device 230 holds the flow path forming member 11 that constitutes the flow path extending in the flow path direction, and is installed at least at the first end of the bent portion (the first end 13a of the pipe joint 13 or the end of the first fluid pipe 14) and is configured to restrict movement of the bent portion and the first fluid pipe portion that exceeds a predetermined movement amount due to linear expansion in the longitudinal direction of the second fluid pipe portion toward the bent portion. Here, in the restricting device 230, the direction in which the flow path forming member 11 passes (the left-right direction in FIG. 19(c)) is defined as the flow path direction, the direction along the wall surface and perpendicular to the flow path direction (the left-right direction in FIG. 19(a)) is defined as the width direction, and the direction perpendicular to the wall surface (the up-down direction in FIG. 19(a)) is defined as the height direction.

[0074] The regulator 230 includes a regulator body 231 fixed to the wall surface to which the base 111 of the bent portion protection cover 110 is fixed, and a regulator 241 including an attachment portion (locking claw 243) attached to the attachment portion (groove portion 233) of the regulator body 231. As shown in Figs. 18 to 20, the regulator body 231 is fixed to the wall surface and formed in a plate shape so as to support the flow path component 11 from the wall surface side. On the other hand, the regulator 241 is made of a ring-shaped belt with an open end. The regulator 241 has a holding portion 242 extending in the circumferential direction with a predetermined diameter. In this embodiment, the rear edge portion of the lower half of the holding portion 242 is cut out at a substantially right angle, and a step portion is formed between the upper half and the lower half. In other words, the upper half located in the middle portion of the holding portion 242 is longer in the flow path direction and has higher rigidity. Furthermore, a plurality of protruding portions 242a protruding radially inward are formed on the inner surface of the holding portion 242. As described later, the protruding portions 242a are configured to bite into the foam layer 19 wrapped around the flow path component 11.

[0075] Each end of the holding portion 242 is provided with an attachment portion for attachment to the attachment portion of the regulator body 231. As shown in FIG. 20, the attachment portion is a pair of locking claws 243 extending from the end of the holding portion 242 toward the outside in the width direction in a substantially horizontal direction. The pair of locking claws 243 are plate pieces extending in opposite directions in the width direction. The regulator body 231 and the regulator 241 in the attached state are configured to cooperate with each other to surround and hold the outer periphery of the flow path component 11 (the pipe joint 13 or the fluid pipes 14, 15). In other words, the regulator 230 has an enclosing portion that surrounds at least a part of the outer periphery of the flow path component 11. As shown in FIG. 21, the enclosing portion has an inner periphery of a substantially circular shape, and its inner diameter is larger than the outer diameter of the fluid pipes 14, 15 to be held.

[0076] The regulator body 231 is provided with a fixing portion 232 for fixing the regulator 230 to a wall surface at approximately the center in the flow path direction and the width direction. The fixing portion 232 is a screw hole through which a screw passes. The regulator body 231 is also provided with a pair of grooves 233 as attachment portions corresponding to the attachment portion of the regulator 241. The pair of grooves 233 are continuous along the flow path direction and have through holes 233a that open facing each other toward the inside in the width direction. The grooves 233 are also provided with an introduction port 233b that opens one end side (front end) of the through hole 233a in the flow path direction and introduces the locking claw 243 into the grooves 233 by the movement of the regulator 241 in the flow path direction, and a locking portion 234 that locks the locking claw 243 introduced through the introduction port 233b in the grooves 233. The through hole 233a has an opening width and an opening length that allow the locking claw 243 to pass through from the width direction. The inlet 233b opens on the front side and has a size that allows the locking claw 243, which slides along the flow path direction, to be introduced into the groove 233. On the other hand, the end (rear end) of the groove 233 opposite the inlet 233b is closed. The locking portion 234 is a locking surface that faces downward within the groove 233 so as to engage with the upper surface of the locking claw 243.

[0077] That is, as shown in Fig. 20, the regulator 241 is slid along the flow path direction from the front side (i.e., the inlet 233b side) of the regulator body 231, and the locking claws 243 of the regulator 241 are inserted into the pair of grooves 233 via the pair of inlets 233b, thereby allowing the regulator 241 to be attached to the regulator body 231. In the attached state, as shown in Fig. 21, the locking claws 243 introduced into the grooves 233 via the inlets 233b are arranged to pass through the through holes 233a, and are locked in the grooves 233 by the locking portions 234.

[0078] 21, the restrictor main body 231 is provided with a displacement restricting portion 235 that restricts the displacement of each of the locking claws 243 so as to separate from the locking portion 234 through the through hole 233a of each of the grooves 233 when the pair of mounting portions are attached to the pair of attached portions. The displacement restricting portion 235 is disposed at a position facing each end of the holding portion 242. The displacement restricting portion 235 is disposed on the inner side in the width direction of each end of the holding portion 242, and is formed on a surface facing the outer side in the width direction of the erect wall erected in the height direction. That is, as described later, when the regulating body 241 is deformed by receiving a load from the flow path component 11 and the end of the holding portion 242 moves inward in the width direction, the abutting surface 244 (the surface opposite to the protruding direction of the locking claw 243) facing inward in the width direction at the end of the holder 243 abuts against the displacement regulating portion 235 of the standing wall, so that the locking claw 243 can be restricted from completely coming off the groove portion 233 through the through hole 233a (see FIG. 28). Then, the tip end in the height direction of the standing wall (i.e., the upper end of the displacement regulating portion 235) is at a height position farther from the wall surface than the locking portion 234. This allows the abutting surface 244 of the end of the holder 243 to abut against the displacement regulating portion 235 reliably, and as a result, the regulating body 241 can be stably prevented from coming off the regulator main body 231.

[0079] 19(a) and 21, the regulation tool main body 231 includes a pair of outer walls 236 that are positioned outside the holding portion 242 in the width direction of the regulation tool 230 in the attached state and that are erected to a position higher than the erected wall. The pair of outer walls 236 sandwich the holding portion 242 from the outside in the width direction, thereby functioning as guide portions that guide the sliding movement of the regulation body 241 when the regulation body 241 is attached to the regulation tool main body 231. The pair of outer walls 236 also limit excessive distortion of the regulation body 241 outward in the radial direction, thereby making it possible to stably maintain the attachment of the regulation body 241 to the regulation tool main body 231.

[0080] Furthermore, as shown in Fig. 19(c) and Fig. 20, the restricting tool main body 231 is provided with a restricting wall 237 connected to the rear of the outer wall 236 in the flow path direction. Here, the outer wall 236 and the restricting wall 237 are connected to each other and are formed into an L-shaped wall in a plan view. The restricting wall 237 closes the rear end of the groove portion 233. In addition, the front surface of the restricting wall 237 can abut against the end surface of the holding portion 242 of the restricting body 241 facing rearward. In other words, the restricting wall 237 functions as an excessive movement restricting portion that restricts excessive sliding movement of the restricting body 241 in the attachment direction when the locking claw 243 is introduced into the groove portion 233 through the introduction port 233b. In the attached state of the regulating device 230, as shown in FIG. 19(c), the front surface of the regulating wall 237 abuts against the rear end surface of the regulating body 241, and the step portion (lower surface) is closely opposed between the upper surface of the regulating wall 237 and the upper and lower halves of the holding portion 242.

[0081] As shown in FIG. 19(b) and FIG. 20, the regulator body 231 is provided with a pair of elastic claws 238 arranged on the front side of the introduction port 233b of the pair of grooves 233 in the attachment direction. The pair of elastic claws 238 are arranged at positions where they interfere with the locking claws 243 that slide toward the introduction port 233b in the original position. When the regulator 241 is attached to the regulator body 231, when the locking claws 243 that move in the attachment direction abut against the elastic claws 238, they are elastically deformed so as to retract inward in the width direction. On the other hand, when the locking claws 243 that move in the separation direction opposite to the attachment direction abut against the elastic claws 238, the elastic claws 238 act to lock the locking claws 243 without elastic deformation. That is, the elastic claws 238 function as a separation movement restricting portion that allows the regulator 241 to move in the attachment direction while restricting the regulator 241 from moving in the separation direction opposite to the attachment direction. Therefore, in the attached state of the regulating device 230, the regulating wall 237 as the excessive movement regulating part and the elastic claw 238 as the separation movement regulating part work together to position and maintain the regulating body 241 in the appropriate position on the regulating device main body 231 in the attachment direction.

[0082] The regulator 230 is configured to be able to be housed on the base 111 of the bent portion protection cover 110. In particular, the regulator body 231 is held on the base 111 without moving in the flow path direction via the abutment step portion 117 (connected portion) of the base 111 shown in FIG. 2. On the other hand, as shown in FIG. 18(b), an abutment piece 239 extending perpendicularly to the fixing surface is provided on the rear surface of the regulator body 231. The abutment piece 239 engages with the end surface of the end of the base 111 as a connecting portion, so that the regulator body 231 is held in a state where it is positioned on the base 111. Note that, in a state where the regulator body 231 is positioned on the base 111, the fixing portion 232 of the regulator body 231 and the fixing hole 115 of the base 111 are aligned. Furthermore, the restricting tool 230 is configured so as not to interfere with the connection between the bent portion protective cover 110 (base 111) and the fluid pipe portion protective cover 120 (base member 121) when placed on the base 111.

[0083] Next, referring to Figs. 22 to 26, a flow path arrangement structure 20 constructed by the protective cover device 200 and the flow path component 11 of this embodiment will be described. Fig. 22 is a schematic perspective view showing the flow path arrangement structure 20 of one embodiment of the present invention. Fig. 23 is a partially enlarged perspective view of the flow path arrangement structure 20. Fig. 24 is a plan view of the flow path arrangement structure 20 as seen from the wall surface side. In Figs. 22 to 24, for convenience of explanation, parts of the lid 112 and the cover member 122 are cut out to depict the internal structure. Fig. 25 is a bottom view of the flow path arrangement structure 20 as seen from the wall surface side. Fig. 26 is an E-E cross-sectional view of the flow path arrangement structure 20 of Fig. 24. Here, the flow path arrangement structure 20 is a structure in which a flow path component 11 having a flow path that bends with respect to the wall surface of the structure is arranged. Meanwhile, in the flow path arrangement structure 20, a structure in which the flow path component 11 is held against the wall surface by the holding portion 242 of the regulating tool 230 is called a holding structure.

[0084] The flow path arrangement structure 20 is a structure in which the flow path component 11 is arranged on a wall surface using the above-mentioned protective cover device 200. That is, the flow path arrangement structure 20 includes the flow path component 11 having a bent flow path, a bent portion protective cover 110 forming an arrangement space inside in which the bent portion of the flow path component 11 is arranged, a fluid pipe portion protective cover 120 connected to the end of the bent portion protective cover 110, and a restricting tool 230 installed at the end of the bent portion. In this embodiment, the fluid pipe is a coated pipe in which a coating material compressible in the thickness direction is fitted. Specifically, a foam layer 19 is provided as a heat insulating material around the first fluid pipe 14 and the second fluid pipe 15, which are straight pipes. This foam layer 19 can be formed from urethane foam or the like. The foam layer 19 is compressively deformable between the first end of the bent portion and / or the first fluid pipe portion and the restricting portion so as to allow the bent portion and the first fluid pipe portion to move when the second fluid pipe portion linearly expands. 22 and 23, the bent portion protection cover 110 is disposed therein to protect the bent portion, and the two fluid pipe protection covers 120 are disposed therein to protect the first fluid pipe portion and the second fluid pipe portion, respectively. The foam layer 19 may be provided on a part or the entirety of the pipe joint 13.

[0085] As shown in Fig. 24 and Fig. 25, the restrictor 230 is disposed outside the bent portion protection cover 110 and the fluid pipe portion protection cover 120, and inside the bent portion protection cover 110. In particular, the base 111 of the bent portion protection cover 110 and the base member 121 of the fluid pipe portion protection cover 120 are directly connected in the flow path direction via the connection protrusion 114 and the connection recess 123, and the restrictor 230 is accommodated inside the bent portion protection cover 110. Here, the bent portion protection cover 110 covers the end of the first fluid pipe 14 and the end of the second fluid pipe 15, together with each end of the pipe joint 13, by disposing them inside. Then, the base 111, the base member 121, and the restrictor main body 231 are fixed to the wall surface by screws, respectively.

[0086] 24, a lid 112 is attached to a base 111 of the bent portion protective cover 110, and a cover member 122 is attached to a base member 121 of the fluid pipe portion protective cover 120, whereby both the flow path forming member 11 and the restrictor 230 are protected from being exposed to the wall surface side. In this embodiment, the restrictor 230 is fixed to the wall surface inside the bent portion protective cover 110 when viewed from the wall surface, and the restrictor main body 231 and the restrictor 241 are entirely housed within the bent portion protective cover 110 in a state in which the first fluid pipe 14 (or the second fluid pipe 15) is held by the restrictor 230. That is, the restrictor 230 is protected from being entirely exposed to the outside, and the aesthetic appearance of the flow path arrangement structure 20 is prevented from being impaired by the exposure of the restrictor 230.

[0087] As shown in FIG. 26, in the cross-sectional view of the first end of the bent portion, the restrictor body 241 is attached to the restrictor body 231 fixed to the wall surface via the fixing portion 232, and the restrictor body 231 and the restrictor body 241 cooperate to form an enclosing portion, which encloses and holds the flow path component 11 (here, the first fluid pipe 14). At this time, in the foam layer 19, compressed portions pressed by the multiple protrusions 242a and non-compressed portions that are relatively less compressed or are not compressed and enter between the multiple protrusions 242a are alternately formed in the enclosing direction. In this way, the foam layer 19 is deformed so as to enter between the multiple protrusions 242a, thereby preventing the foam layer 19 from moving and shifting inside the enclosing portion. In addition, the pressurized portions and non-pressurized (or weakly pressurized) portions are alternately formed, so that the holding force is effectively secured while suppressing the foam layer 19 from being crushed too much.

[0088] Furthermore, a restricting portion 246 is provided on the inner surface (inner surface of the surrounding portion) of the holding portion 242 of the restricting body 241 for restricting movement of the flow path forming member 11 beyond a predetermined amount of movement associated with longitudinal linear expansion of the second fluid pipe portion toward the bent portion side. Here, the outer surface of the flow path forming member 11 opposite the second end of the bent portion is the outer surface facing the right side of the first fluid pipe 14 in Fig. 26, and the direction of linear expansion of the second fluid pipe portion (or the second fluid pipe 15) is the rightward direction in Fig. 26. The restricting portion 246 is located away from the outer surface of the flow path forming member 11 opposite the second end so as to form a movement-permitting space 247 between the restricting portion 246 and the outer surface of the flow path forming member 11 opposite the second end.

[0089] 27 is a schematic diagram showing the flow path arrangement structure 20 when the second fluid pipe section (or the second fluid pipe 15) of the flow path component 11 linearly expands in the longitudinal direction toward the bent section. In the flow path arrangement structure 20, it is assumed that when hot water passes through the second fluid pipe 15, the second fluid pipe 15 is heated and linearly expands so as to extend in the longitudinal direction. Here, only the linear expansion of the second fluid pipe section is described, but it goes without saying that the first fluid pipe section can also linearly expand in the same way. In this case, the restrictor 230 provided at the second end can function in the same way as the restrictor 230 provided at the first end.

[0090] As shown in Fig. 27, when the second fluid pipe section linearly expands, the bent portion of the flow path configuration member 11 and the first fluid pipe section move to the opposite side of the second end of the bent portion (i.e., the right side in Fig. 27). When the second fluid pipe section linearly expands, the first fluid pipe section (or the bent portion) moves, as an initial movement, through the movement allowance space 247 inside the enclosed portion formed by the restrictor 230 to the opposite side of the second end of the bent portion. In Fig. 28, the movement direction (or vector) of the first fluid pipe section has a vertical component moving away from the wall surface in addition to a horizontal component.

[0091] Then, the first fluid pipe section (or the bent section) moves in the movement allowance space 247 in accordance with the linear expansion of the second fluid pipe section, and then, as shown in FIG. 28, the outer surface opposite to the second end of the first fluid pipe section abuts against the restricting section 246 located on the inner surface of the surrounding section. As the first fluid pipe section moves, the foam layer 19 is compressed to a limiting point in the movement allowance space 247. The restricting section 246 abuts against the outer surface of the first fluid pipe section via the compressed foam layer 19, and functions to restrict excessive movement of the bent section and / or the first fluid pipe section beyond the movement allowance space 247. At this time, the restricting section 246 receives a load of linear expansion from the flow path component 11, but since the movement allowance space 247 allows the initial movement during linear expansion, the restricting section 246 is avoided from being affected by the load due to linear expansion in the initial stage, and the influence of the load is weakened. Although not shown, in the case of a relatively small degree of linear expansion in which the bent portion and / or the first fluid pipe portion does not exceed the allowable movement space 247, the regulating portion 246 does not abut against the outer surface of the first fluid pipe portion, and therefore the regulating device 230 is not subjected to load from the flow path component member 11.

[0092] Further, in the flow path arrangement structure 20 (or the holding structure) of this embodiment, the regulating body 241 is firmly attached to the regulating tool main body 231 (at least in a direction perpendicular to the flow path direction). For example, referring to the locking claw 243 on the left side of FIG. 28, when the regulating portion 246 receives a strong load in an oblique direction away from the wall surface, the regulating body 241 is pulled in the radial direction or deformed, and the locking claw 243 is displaced in a direction to separate from the groove portion 233 through the through hole 233a. At this time, the displacement regulating portion 235 provided on the regulating tool main body 231 is disposed at a position facing the displaced end portion of the holding portion 242. As a result, the end portion of the holding portion 242 displaced inward in the width direction is locked by the displacement regulating portion 235 through the abutment surface 244, so that the locking claw 243 is restricted from being separated through the through hole 233a of the groove portion 233. That is, in the flow path arrangement structure 20 (or holding structure), even if the flow path forming member 11 moves due to thermal expansion or the like and a force is applied to the restricting tool 230, the displacement restricting portion 235 acts on the end of the holding portion 242 so as to restrict the displacement of the locking claw 243, thereby effectively preventing the locking claw 243 from coming off through the through hole 233a of the groove portion 233. As a result, the retention of the flow path forming member 11 by the restricting tool 230 is stably maintained.

[0093] In other words, the flow path arrangement structure 20 of this embodiment provides a movement-permitting space 247 between the regulating portion 246 and the outer surface of the flow path constituent member 11, thereby alleviating the load caused by the linear expansion of the fluid pipe portion, and further, the displacement regulating portion 235 regulates the displacement of the locking claw 243 in the detachment direction, thereby firmly maintaining the attachment state of the regulating device main body 231 and the regulating body 241, thereby enabling stable holding of the flow path constituent member 11.

[0094] The features of the holding structure in the flow path arrangement structure 20 of this embodiment can also be described as follows.

[0095] One embodiment of the holding structure includes a holding tool (regulating tool 230) having a holding portion that surrounds and holds a pipe, and the inner surface of the holding portion is provided with a plurality of protrusions spaced apart in the surrounding direction, and the holding portion holds a coated pipe having a covering material (foam layer 19) that is compressible in the thickness direction fitted thereon. The present invention is characterized in that compressed portions pressed by the multiple protrusions and non-compressed portions which are compressed relatively less or are not compressed at all and which are sandwiched between the multiple protrusions are alternately formed in the surrounding direction.

[0096] Another problem is that if the inner surface of the holding part is flat, when the covering material (foam layer) is held in the pressed state, it is pressed by the surface, so that the covering material is crushed as a whole, and there is a risk that a crushed area exists outside the holding part in the tube axial direction. In contrast, with the above-mentioned holding structure, by forming pressed parts and non-pressed (or weakly pressed) parts alternately in the circumferential direction of the holding part, it is possible to ensure holding force while suppressing excessive crushing of the covering material.

[0097] The present invention is not limited to the above-described embodiment, and various modifications are possible. Modifications of the present invention will be described below.

[0098] (1) The protective cover device of the present invention is not limited to the above embodiment. In the above embodiment, the regulating tool is composed of a regulating tool main body and a regulating body, but the present invention is not limited to this. The regulating tool may be one in which the regulating tool main body and the regulating body are integrally formed without being separated. In this case, the regulating tool is inserted from the end of the flow path component.

[0099] (2) The protective cover device of the present invention is not limited to the above embodiment. In the above embodiment, the regulating tool is composed of a regulating tool main body and a regulating body, but the present invention is not limited to this. The regulating tool may be configured to be composed of only the regulating body. The regulating tool (regulating body) may be directly attached to the base, so that the regulating tool and the base cooperate to form an enclosing portion that surrounds the flow path component. Even in this case, the regulating tool is provided with a regulating portion that is located apart from the outer surface of the flow path component on the opposite side of the second end to form a movement allowance space, and that abuts against the bent portion and / or the first fluid pipe portion to restrict excessive movement of the bent portion and / or the first fluid pipe portion beyond the movement allowance space.

[0100] (3) The protective cover device and flow path arrangement structure of the present invention are not limited to the above embodiment. In the above embodiment, the flow path component is configured by connecting two straight fluid pipes to the end of the L-shaped pipe joint, but the present invention is not limited to this. The flow path component may be configured by one flexible fluid pipe, and the bent portion and the fluid pipe portion may integrally form the fluid pipe. In the flow path arrangement structure, the fluid pipe is arranged in a bent state at the bent portion.

[0101] (4) The protective cover device and the flow path arrangement structure of the present invention are not limited to the above embodiment. In the above embodiment, the flow path component is configured by connecting two straight fluid pipes to the end of the L-shaped pipe joint, but the present invention is not limited to this. For example, the flow path component may be configured by connecting three (two or more) straight fluid pipes to a pipe joint (three-way joint) having ends on three sides. In this case, as shown in FIG. 29, the protective cover device 300 may be configured with a bent portion protective cover 310 that configures a flow path that bends in three directions, a fluid pipe portion protective cover 120 that is connected to the three ends of the bent portion protective cover 310, and a plurality of restrictors 130 that are arranged at each end. In this way, it goes without saying that the above-mentioned effects of the present invention can be achieved even if the number of branches (the number of ends of the bent portion) of the pipe joint increases or decreases.

[0102] (5) The flow path arrangement structure of the present invention is not limited to the above embodiment. The flow path arrangement structure (or holding structure) does not necessarily have to include a bent portion protective cover and / or a fluid pipe portion protective cover. As shown in FIG. 30, the flow path arrangement structure (or holding structure) 40 includes a flow path forming member 11 that forms a bent flow path and has a bent portion having a first end and a second end, and a fluid pipe portion extending straight from the second end of the bent portion, and a restricting tool 130 that is installed at the first end of the bent portion and restricts movement of the bent portion beyond a predetermined movement amount associated with linear expansion of the fluid pipe portion on the second end side toward the bent portion. The flow path forming member 11 is laid on the wall surface of a structure, and the restricting tool 130 is fixed to the wall surface. The regulating device 130 installed at least at the first end of the bent portion is provided with a regulating portion 146 which is positioned away from the outer surface of the opposite side of the second end of the flow path component member 11 to form a movement allowance space 147, and which abuts against the flow path component member when the fluid pipe portion linearly expands longitudinally toward the bent portion to regulate excessive movement of the flow path component member beyond the movement allowance space 147.

[0103] (6) The flow path arrangement structure of the present invention is not limited to the above-mentioned embodiment. In the above-mentioned embodiment, the regulator body is directly fixed to the wall surface, or is fixed to the wall surface together with the base in a state where it is overlapped on the bottom wall of the base (or may be a base member). However, in the present invention, the regulator body may be fixed only to the base (or base member), and the base may be fixed to the wall surface, thereby indirectly fixing the regulator body to the wall surface.

[0104] (7) The flow path arrangement structure of the present invention is not limited to the above embodiment. In the above embodiment, the regulator, the bent portion protection cover, and the fluid pipe portion protection cover are configured as separate bodies, but the present invention is not limited to this, and two or more of these members may be formed integrally. For example, the regulator body of the regulator may be formed integrally with the base of the bent portion protection cover or the base member of the fluid pipe portion protection cover, and configured to also function as the base or base member. More specifically, the bent portion protection cover (or the fluid pipe portion protection cover) includes a base (base member) and a lid (covering member) that are assembled together to form an accommodation space that accommodates the pipe joint (or fluid pipe), and the base (base member) may be provided with an attachment portion (groove portion) to which the attachment portion (locking claw) of the regulator is attached. In other words, the regulator body is provided with an assembly portion to which the lid (or covering member) of the bent portion protection cover (or the fluid pipe portion protection cover) can be assembled.

[0105] (8) The protective cover of the present invention is not limited to the above embodiment. In the above embodiment, the surrounding portion formed by the regulating body and the regulating tool main body has a substantially circular shape symmetrical in the width direction, but the present invention is not limited to this. For example, the surrounding portion may form an oval or elliptical inner circumference and may be configured to abut against the fluid pipe from above and below. Alternatively, the surrounding portion may have an asymmetric shape in the width direction, and the inner surface of the regulating body located on the opposite side to the regulating portion may be configured to abut against the outer surface of the second end side of the fluid pipe.

[0106] (9) The protective cover device and the flow path arrangement structure of the present invention are not limited to the above embodiment. FIG. 31(a) is a schematic diagram showing the flow path arrangement structure 10 and the protective cover device 100 of the first embodiment. As shown in FIG. 31(a), in the flow path arrangement structure 10 of the first embodiment, each of the restricting tools 130 is configured to surround the flow path component member 11, but the present invention is not limited to this. That is, the restricting tool of the present invention only needs to be capable of restricting the excessive movement of the flow path component member beyond the movement allowance space caused by the linear expansion of at least one of the fluid pipe parts, and does not necessarily need to form an enclosing part that surrounds the flow path component member (pipe joint or fluid pipe) in the circumferential direction. In this case, the restricting tool may take any form such as a plate-like body, a convex body, a protrusion, etc. that is fixed to a wall surface and / or a base (or a base member) on only one side in the circumferential direction of the flow path component member (pipe joint or fluid pipe). 31(b)-(d), restrictors 130A-C are provided only on one circumferential side (the outer circumferential side of the bend in the flow path) of flow path constituent member 11 so that restrictors 146A-C positioned away from the outer surface of the bent portion (pipe joint 13) and / or fluid pipe portion (fluid pipes 14, 15) are provided at the destination of flow path constituent member 11 due to linear expansion. Restrictors 130A-C are interposed between the inner surface of the protective cover (bent portion protective cover 110, 110C or fluid pipe portion protective cover 120) and the outer surface of flow path constituent member 11 (pipe joint 13, 13C or fluid pipe 14, 15). That is, in the flow path arrangement structures 10A-C shown in Figures 31(b)-(d), the regulating devices 130A-C are positioned apart so as to form movement-permitting spaces 147A-C between themselves and the outer surface opposite the second end of the flow path constituent member 11, and are provided with regulating portions 146A-C that abut the bent portion and / or fluid pipe portion to regulate excessive movement of the bent portion and / or fluid pipe portion beyond the movement-permitting spaces 147A-C.

[0107] The present invention is not limited to the above-described embodiment and modifications, and may be embodied in various forms within the technical scope of the present invention. [Explanation of symbols]

[0108] 10 Flow path arrangement structure 11 Flow path components 13 Pipe fittings 13a First end 13b Second end 14 1st fluid pipe 15 Second fluid pipe 19 Foam layer 100 Protective cover device 110 Bend protection cover 111 Foundation 112 Lid 114 Connection protrusion (connected part) 115 Fixed hole 116 Connecting piece 117 Contact step part (connected part) 120 Fluid pipe protection cover 121 Base member 122 Covering material 123 Connection recess (connected part) 124 Outer wall section (positioning section) 125 Inner wall (positioning part) 126 Engagement piece 127 Engaged piece 130 Regulatory Equipment 131 Regulator body 132 Fixed part 133 Groove (attached part) 133a Through hole 133b Inlet 134 Locking part 135 Displacement control section (standing wall) 136 Outside wall 137 Control wall (excessive movement control section) 138 Elastic claw (separation movement control part) 139a Connection recess (connection part) 139b Connection protrusion (connection part) 141 Regulatory Body 142 Holding part 143 Locking claw (attachment part) 144 Contact surface 146 Regulatory Department 147 Movement Allowance Space 239 Contact piece (connection part) 242a Protrusion

Claims

1. A protective cover device that protects at least a bent portion of a flow path component having a bent portion constituting a bent flow path, a first fluid pipe portion extending from a first end of the bent portion, and a second fluid pipe portion extending from a second end of the bent portion, the protective cover device being disposed therein, a bent portion protection cover including a base and a cover that can be assembled to each other and that defines an arrangement space therein for arranging the bent portion; a restricting device that is installed at least on the first end side of the first end and the second end of the bent portion and restricts movement of the bent portion and the first fluid pipe portion beyond a predetermined movement amount associated with linear expansion of the second fluid pipe portion toward the bent portion in a longitudinal direction, The protective cover device is characterized in that the regulating device is positioned at a distance so as to form a movement-permitting space between itself and the outer surface opposite the second end of the flow path constituent member, and is provided with a regulating portion that abuts the bent portion and / or the first fluid pipe portion to regulate excessive movement of the bent portion and / or the first fluid pipe portion beyond the movement-permitting space.

2. The protective cover device described in claim 1, characterized in that the regulating tool comprises a regulating tool main body fixed to a wall surface to which the base is fixed, and a regulating body having an attachment portion attached to an attachment portion of the regulating tool main body, the regulating portion being provided on the regulating body.

3. 2. The protective cover device according to claim 1, wherein the regulating member is connectable to a connected portion provided on the base.

4. The protective cover device according to any one of claims 1 to 3, wherein the regulating tool has an enclosing portion that encloses at least a portion of an outer periphery of the flow path component member, and the regulating portion is provided on an inner surface of the enclosing portion.

5. 4. The protective cover device according to claim 1, further comprising a fluid pipe section protective cover connected to at least one end of the bent portion protective cover and arranging the first fluid pipe section therein to protect it, wherein the fluid pipe section protective cover has a positioning portion that holds the first fluid pipe section and determines the axial position of the first fluid pipe section.

6. A flow path arrangement structure in which a flow path that bends with respect to a structure is arranged, a flow path forming member including a bent portion that forms the bent flow path, a first fluid pipe portion extending from a first end of the bent portion, and a second fluid pipe portion extending from a second end of the bent portion; a bent portion protection cover including a base and a cover that can be assembled to each other and that defines an arrangement space therein for arranging the bent portion; a restricting device that is installed at least on the first end side of the first end and the second end of the bent portion and restricts movement of the bent portion and the first fluid pipe portion beyond a predetermined movement amount associated with linear expansion of the second fluid pipe portion toward the bent portion in a longitudinal direction, The bent portion protection cover is disposed so as to protect the bent portion of the flow path component laid in the structure, a restricting portion provided on the restricting device installed on at least the first end side of the bent portion so as to form a movement-permitting space between the restricting device and an outer surface of the flow path component opposite the second end side, the restricting portion contacting the bent portion and / or the first fluid pipe portion when the second fluid pipe portion linearly expands longitudinally toward the bent portion to restrict excessive movement of the bent portion and the first fluid pipe portion beyond the movement-permitting space.

7. the flow path forming member is composed of a pipe joint forming the bent portion, a first fluid pipe connected to a first end of the pipe joint and forming the first fluid pipe portion, and a second fluid pipe connected to a second end of the pipe joint and forming the second fluid pipe portion, 7. The flow path arrangement structure according to claim 6, wherein the regulating portion is provided at least at a position adjacent to the first end of the pipe joint and at a position capable of surrounding an outer surface of the first fluid pipe.

8. 7. The flow path arrangement structure according to claim 6, characterized in that the regulating device is installed at both the first end and the second end of the bent portion, and in each of the first and second regulating devices installed at the first and second ends, the regulating portion is positioned away from the outer surface of the opposite end of the flow path constituent member to form a movement-permitting space between the regulating portion and the outer surface of the opposite end of the flow path constituent member, and when one of the first and second fluid pipe portions linearly expands in the longitudinal direction toward the bent portion, the regulating portion abuts against the other of the bent portion and / or the first and second fluid pipe portions to regulate excessive movement of the flow path constituent member beyond the movement-permitting space.

9. A flow path arrangement structure in which a flow path that is bent with respect to a structure is arranged, a flow path forming member including a bent portion that forms the bent flow path, a first fluid pipe portion extending from a first end of the bent portion, and a second fluid pipe portion extending from a second end of the bent portion; a bent portion protection cover including a base and a cover that can be assembled to each other and that defines an arrangement space therein for arranging the bent portion; a restricting device that is installed at least on the first end side of the first end and the second end of the bent portion and restricts movement of the bent portion and the first fluid pipe portion beyond a predetermined movement amount associated with linear expansion of the second fluid pipe portion toward the bent portion in a longitudinal direction, the bent portion protection cover is disposed so as to protect the bent portion of the flow path component member laid on the structure, a foam layer compressible in a thickness direction is fitted on the first end of the bent portion and / or on an outer surface of the first fluid pipe portion; the restricting device installed at least on the first end side of the bent portion is provided with a restricting portion that is positioned away from an outer surface of the flow path component opposite to the second end to form a movement allowance space, and that comes into contact with the first end of the bent portion and / or the foam layer of the first fluid pipe portion when the second fluid pipe portion linearly expands in the longitudinal direction toward the bent portion to restrict excessive movement of the bent portion and the first fluid pipe portion beyond the movement allowance space, a flow path arrangement structure, characterized in that the foam layer is compressively deformable between the first end of the bent portion and / or the first fluid pipe portion and the regulating portion so as to allow the bent portion and the first fluid pipe portion to move upon linear expansion of the second fluid pipe portion.

10. The flow path arrangement structure described in claim 9, characterized in that the regulating device has a surrounding portion that surrounds at least a portion of the outer periphery of the flow path component member, the regulating portion is formed on the inner surface of the surrounding portion, and a plurality of protrusions are provided at intervals in the surrounding direction, and the foam layer has compressed portions pressed by the plurality of protrusions and non-compressed portions that are relatively less compressed or that are not compressed and are inserted between the plurality of protrusions, alternately formed in the surrounding direction.

11. A flow path arrangement structure in which a flow path that is bent with respect to a structure is arranged, a flow path forming member that forms the bent flow path, the flow path including a bent portion having a first end and a second end, and a fluid pipe portion extending linearly from the second end of the bent portion; a restricting device that is installed on a first end side of the bent portion and restricts movement of the bent portion beyond a predetermined movement amount associated with linear expansion of the fluid pipe portion on the second end side toward the bent portion in a longitudinal direction, The flow path forming member is laid on a wall surface of the structure, and the regulating tool is fixed to the wall surface, a restricting portion provided on the restricting device installed on the first end side of the bent portion so as to form a movement-permitting space between the restricting device and an outer surface of the opposite side of the second end of the flow path component member, the restricting portion contacting the flow path component member when the fluid pipe portion linearly expands longitudinally toward the bent portion to restrict excessive movement of the flow path component member beyond the movement-permitting space.

12. 12. The flow passage arrangement structure according to claim 11, wherein the bent portion and the fluid pipe portion integrally form a fluid pipe, and the fluid pipe is arranged in a bent state at the bent portion.

13. the straight fluid pipe section of the flow path component is accommodated in a straight fluid pipe section protective cover, the bent section is accommodated in a bent section protective cover, and the regulating device is positioned in the fluid pipe section protective cover and / or the bent section protective cover so as to be entirely covered; The flow path arrangement structure according to claim 11 or 12, characterized in that an outer surface of the flow path component member opposite the second end is separated from an inner surface of the fluid pipe section protective cover and / or the bent section protective cover.

Images