Pipe joint cover and arrangement structure of pipe joint

Abstract

To enable an original arrangement attitude of a movement regulation body to be maintained even if a large pressing force is exerted on the movement regulation body attached to a pipe joint cover by movement of a pipe joint.SOLUTION: An arrangement structure of a pipe joint includes: a pipe joint cover C1 which comprises a base V1 and a lid body L1 and houses a pipe joint K1 in an arrangement structure 10 at the interior; and a movement regulation body A1 which is attached to the pipe joint cover C1 and becomes an obstacle in a movement destination of the pipe joint K1 which is moved due to linear expansion of a fluid pipe P1 in a longitudinal direction caused by heat to regulate the movement. The movement regulation body A1 comprises: a pipe joint contact surface 48 with which the pipe joint K1 is placed in contact by the movement; and a pressing reaction force receiving part which is formed at a surface opposite to the pipe joint contact surface 48 to cause a pressing force applied to the movement regulation body K1 through contact by the pipe joint A1 to act on a pressing force support part of the pipe joint cover C0 through the movement regulation body A1 to receive a pressing reaction force in a direction opposite to the movement.SELECTED DRAWING: Figure 10

Description

Technical Field

[0001] The present invention relates to a pipe joint cover for housing a pipe joint and a piping structure for disposing the pipe joint, in a piping structure that blocks linear expansion due to heat of a fluid pipe at a portion of the pipe joint by preventing movement of the pipe joint disposed in the middle of the fluid pipe.

Background Art

[0002] The above-described pipe joint cover is a cover for housing a pipe joint in a state where two fluid pipes are connected, and includes a base fixed to an installation surface and a lid body assembled to the base. The pipe joint is housed and disposed in a disposition space formed by the base and the lid body.

[0003] For example, in a hot and cold water mixing faucet installed in a bathroom, two fluid pipes (mostly made of resin) for water supply and hot water supply are connected. Since both pipes are used at room temperature, the fluid pipe for hot water supply expands linearly due to heat during hot water supply, causing meandering in the middle of the fluid pipe, or in the case where there is little meandering in the middle, the cumulative linear expansion may be concentrated at the straight portion of the faucets connected to the end of the fluid pipe. In the latter case, a large heating load is generated at the connection portion between the end of the fluid pipe and the faucets, causing thermal deformation and damage including rupture at the connection portion.

[0004] Patent Document 1 discloses a structure in which a movement restricting body that abuts against an end face of a pipe joint housed in a pipe joint cover and restricts movement of the pipe joint due to linear expansion of a fluid pipe can be attached at different positions along the axial direction of the fluid pipe on a base constituting the pipe joint cover.

[0005] However, since the movement restricting body attached to the base is only attached to the base at its base end portion, when the pipe joint moves due to the linear expansion of the fluid pipe and the pipe joint abuts against the movement restricting body, the movement restricting body receives a large pressing force from the pipe joint and rotates about its attachment portion, and cannot prevent the pipe joint from moving beyond a predetermined value due to the linear expansion of the fluid pipe. As a result, the linear expansion of the fluid pipe cannot be effectively blocked at the pipe joint portion.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0007] An object of the present invention is to enable the original arrangement posture of the movement restricting body to be maintained even when a large pressing force acts on the movement restricting body attached to the pipe joint cover due to the movement of the pipe joint in the above-described piping structure.

Means for Solving the Problems

[0008] The invention according to claim 1 for solving the above problems is a cover body including a base and a lid body that are assembled to each other and form an internal arrangement space for arranging a pipe joint to which a fluid pipe is connected, a movement restricting body attached to the cover body, which serves as an obstacle to the movement destination of the pipe joint that moves due to the linear expansion of the fluid pipe in the longitudinal direction due to heat and restricts the movement, wherein the movement restricting body includes a pipe joint abutting portion against which the pipe joint abuts due to the movement, and a pressing reaction force receiving portion formed on a surface opposite to the pipe joint abutting portion, which causes the pressing force exerted by the pipe joint on the movement restricting body due to the abutment to act on a pressing force supporting portion of the cover body via the movement restricting body and receives a pressing reaction force in a direction opposite to the movement.

[0009] According to the invention of claim 1, when a pipe joint connected to a fluid pipe thermally linearly expanded moves a predetermined length in the expansion direction of the fluid pipe within a pipe joint cover, the pipe joint abuts against an abutting portion of a movement restricting body attached to the pipe joint cover, and the movement restricting body has a pressing reaction force receiving portion formed on a surface opposite to the abutting portion pressing a pressing force support portion of the pipe joint cover with a predetermined pressing force, so that the pressing reaction force receiving portion of the movement restricting body receives a reaction force of the pressing force. Due to the above-described mechanical action of the movement restricting body, even when the movement restricting body receives a large pressing force from the pipe joint, it can maintain its original attached posture without tilting or moving, so that the linear expansion of the fluid pipe caused by heat can be effectively blocked at the portion of the pipe joint accommodated within the pipe joint cover.

[0010] The invention of claim 2 is characterized in that, in the invention of claim 1, the movement restricting body has an overall shape of an inverted U shape and is attached to the base after disposing a pipe joint in the arrangement space of the cover body.

[0011] According to the invention of claim 2, in addition to the above-described original function, the movement restricting body has the advantage that even when the fluid pipe is relatively biased upward in piping or movement, it can prevent the fluid pipe from floating and enable piping.

[0012] The invention of claim 3 is characterized in that, in the invention of claim 1, the movement restricting body has an overall shape of a U shape and a pipe joint is disposed in the arrangement space of the cover body after attaching the movement restricting body to the base.

[0013] According to the invention of claim 3, in addition to the above-described original function, the movement restricting body has the advantage that even when the fluid pipe is biased downward in piping, due to the presence of the movement restricting body, the fluid pipe can be lifted and piped.

[0014] The invention of claim 4 is characterized in that, in the invention of claim 1, the movement restricting body has a rod shape and is disposed at the movement destination of the pipe joint in the cover body.

[0015] The invention according to claim 4 has a rod-shaped movement restricting body provided with the above-described pipe joint abutting portion and pressing reaction force receiving portion. Therefore, even though it is rod-shaped, when the pressing force of the pipe joint acts, it receives the reaction force of the pressing force while maintaining the original installed posture. The rod-shaped movement restricting body is arranged on the side of the fluid pipe or the pipe joint along a direction perpendicular to the base constituting the pipe joint, or is arranged on the upper or lower part of the fluid pipe or the pipe joint along the width direction of the pipe joint cover.

[0016] The invention according to claim 5 a cover body composed of a base and a lid that are assembled with each other and form an internal installation space for arranging a pipe joint to which a fluid pipe is connected, a movement restricting body that is attached to the base and serves as an obstacle to the movement destination of the pipe joint that moves due to thermal linear expansion of the fluid pipe in the longitudinal direction and restricts the movement, is characterized in that the entire movement restricting body is shaped to fit on one side separated by a virtual plane including the axis of the fluid pipe.

[0017] In the invention according to claim 1, forces in opposite directions act simultaneously on the pipe joint abutting portion and the pressing reaction force receiving portion provided on the movement restricting body, and these opposite forces act as a rotational moment on the movement restricting body. Therefore, the distance between the pipe joint abutting portion and the pressing reaction force receiving portion of the movement restricting body is as short as possible, which enhances the attachment stability of the movement restricting body to the pipe joint cover. The invention according to claim 5 has a shape in which the entire movement restricting body fits on one side separated by a virtual plane including the axis of the fluid pipe, so that the distance between the pipe joint abutting portion and the pressing reaction force receiving portion of the movement restricting body can be relatively shortened, and the attachment stability of the movement restricting body to the pipe joint cover is enhanced.

[0018] The invention according to claim 6 is, in the invention according to any one of claims 1 to 5, wherein the base includes a base portion that faces the installation space on the front side and is fixed with the back side facing the installation surface, and a standing wall portion that stands from the base portion in a direction away from the installation surface and has one surface facing the installation space. In the standing wall portion, a groove portion having a side opening that opens toward the arrangement space is formed. In a state where the movement restricting body is fitted in the groove portion, a pipe joint abutting portion that abuts against the moving pipe joint is formed. The inner surface on the side where the pipe joint tends to move on the opposing inner surfaces along the moving direction of the groove portion constitutes a pressing force support surface that receives and supports the pressing force of the movement restricting body from the side opposite to the pipe joint abutting portion.

[0019] According to the invention of claim 6, the base of the pipe joint cover is composed of a base fixed to the installation surface and a standing wall portion erected on the base and having a groove portion formed on the surface facing the arrangement space. The movement restricting body is fitted into the groove portion of the standing wall portion, and the inner surface on the side where the pipe joint tends to move on the opposing inner surfaces of the groove portion constitutes a pressing force support surface that receives and supports the pressing force of the movement restricting body from the side opposite to the pipe joint abutting portion. In addition to being able to stably attach the movement restricting body to the base constituting the pipe joint, the pressing force support surface reliably supports the pressing force of the pipe joint, and the pressing reaction force is firmly received by the pressing reaction force receiving portion of the movement restricting body.

[0020] The invention of claim 7 is characterized in that, in the invention of claim 6, both the pipe joint abutting portion and the pressing force support surface are arranged on the side opposite to the base portion of the base with respect to the axis of the fluid pipe connected by the pipe joint.

[0021] The invention of claim 7 specifically specifies the "one side" in the "one side separated by the virtual plane including the axis of the fluid pipe" in the invention of claim 5.

[0022] The invention of claim 8 is characterized in that, in the invention of claim 6, the groove portion is continuously formed along the standing direction of the standing wall portion of the base, and the pressing force support surface is formed by a plane that continuously extends in the forming direction of the groove portion.

[0023] According to the invention of claim 8, by vertically arranging a movement restricting body with respect to the base constituting the pipe joint cover, and by having a pressing force support surface that continuously extends and has an increased area, the pressing force of the pipe joint can be supported more stably.

[0024] The invention of claim 9 is the invention of claim 7, wherein the standing wall portions are provided in a pair facing each other so as to sandwich the arrangement space therebetween, and the groove portions are formed in both of the pair of standing wall portions. The movement restricting body has an overall U-shaped configuration, and includes a pair of laterally extending portions disposed on both sides of the fluid pipe or the pipe joint, and a connecting portion that connects end portions on the same side of the pair of laterally extending portions. The pair of laterally extending portions are each fitted into the groove portions of the pair of standing wall portions and attached to the base.

[0025] According to the invention of claim 9, the base constituting the pipe joint and a pair of standing wall portions facing each other with the arrangement space therebetween are provided, and the pair of laterally extending portions of the U-shaped movement restricting body whose same sides are connected by the connecting portion are respectively fitted into the groove portions formed on the side of the arrangement space of each standing wall portion. Therefore, the pressing force acting on the movement restricting body by the pipe joint can restrict the movement of the pipe joint in a stable state with left and right balance by the movement restricting body. Further, since the overall shape of the movement restricting body is an integral structure in the shape of U or inverted U, its handling becomes easy.

[0026] The invention of claim 10 is the invention of claim 9, wherein the connecting portion includes a tilting suppressing portion that projects in the moving direction of the pipe joint with respect to the inner surfaces facing each other along the axial direction of the fluid pipe, so as to be wider than the interval between the inner surfaces facing each other.

[0027] In the invention according to claim 10, since the connecting portion that connects the pair of side extending portions of the U-shaped movement restricting body is provided with the above-described wide-width tilting suppressing portion, when the pipe joint abuts against and presses the pipe joint abutting portion of the movement restricting body, if the movement restricting body starts to tilt in a side view, one end portion (tip portion) in the width direction of the tilting suppressing portion abuts against the outer peripheral surface of the fluid pipe or the pipe joint, thereby preventing the tilting. The tilting prevention action by the tilting suppressing portion also enhances the stability of the attachment of the movement restricting body to the base of the pipe joint.

[0028] The invention according to claim 11 is, in the invention according to claim 9, characterized in that the cover body can accommodate therein a pipe joint that connects two fluid pipes in a straight line with their respective end portions facing each other. Two movement restricting bodies can be attached to the cover body facing the respective end faces of the pipe joint that connects the two fluid pipes.

[0029] The invention according to claim 11 is implemented in the piping structure of the most common pipe joint.

[0030] The invention according to claim 12 is, in the invention according to any one of claims 1 to 5, characterized in that when the movement restricting body is pressed by the moving pipe joint, it receives a pressing support force from the side opposite to the moving direction of the pipe joint at a plurality of different positions shifted in a direction orthogonal to the axial direction of the fluid pipe.

[0031] According to the invention of claim 12, by receiving the pressing support force from the side opposite to the moving direction of the pipe joint at a plurality of different dot-like or planar positions shifted in a direction orthogonal to the axial direction of the fluid pipe, the support state of the pressing force of the pipe joint by the inner surface of the groove portion of the base is further stabilized.

[0032] The invention according to claim 13 comprises a cover body composed of a base and a lid body that are assembled with each other and form an internal arrangement space for arranging a pipe joint to which a fluid pipe is connected. and a movement restricting body that restricts the movement by serving as an obstacle to the movement destination of the pipe joint that moves due to the linear expansion of the fluid pipe in the longitudinal direction caused by heat. The movement restricting body includes a mounting portion mounted on the base, a pipe joint abutting portion against which the pipe joint abuts due to the movement, and a pressing reaction force receiving portion that causes the pressing force exerted by the pipe joint on the movement restricting body due to the abutment to act on the pressing force support portion of the cover body via the movement restricting body and receives a pressing reaction force in the direction opposite to the movement.

[0033] According to the invention of claim 13, since the movement restricting body is mounted on the base of the pipe joint via the mounting portion and the base constitutes the pressing force support portion, the base can be formed in a thick plate shape (disk shape) without a standing wall portion, simplifying the configuration of the base.

[0034] The invention of claim 14 is characterized in that, in the invention of claim 13, the pressing reaction force receiving portion of the movement restricting body is extended to the side opposite to the pipe joint abutting portion so as to prevent rotation about the mounting portion pressed by the pipe joint due to the movement, and the extended end thereof abuts against and presses the base.

[0035] According to the invention of claim 14, by configuring the pressing reaction force receiving portion of the movement restricting body as a bracing portion, the reaction force of the pressing force of the pipe joint can be effectively received with a simple structure.

[0036] In the invention of claim 15, a pipe joint connected to a fluid pipe is disposed inside a cover body that forms a disposal space inside. On one side of the space separated by a virtual plane including the axis of the fluid pipe, which is disposed at the extension end of the fluid pipe connected to the pipe joint and where the pipe joint moves to the extension end and is pressed, the movement restricting body is attached to the cover body so as to abut against the moving pipe joint and receive the reaction force of the pressing support force from the side opposite to the moving direction of the pipe joint. This is a pipe joint disposal structure.

[0037] The invention of claim 15 is an expression of grasping the invention of claim 5 from the aspect of the "pipe joint disposal structure" and has the same operational effects as the invention of claim 5.

[0038] The invention according to claim 16 comprises a cover body composed of a base and a lid body that are assembled together and form an internal arrangement space for arranging a pipe joint to which a fluid pipe is connected, and a movement restricting body that is attached to the cover body and serves as an obstacle to the movement destination of the pipe joint that moves due to linear expansion of the fluid pipe in the longitudinal direction due to heat, and restricts the movement. The base includes a base portion whose front side faces the arrangement space and whose back side is fixed facing the installation surface. The lid body includes a top wall portion that faces the front side of the base portion and constitutes a surface facing the arrangement space. The pipe joint is arranged in the arrangement space of the pipe joint cover constituted by the base and the lid body. The movement restricting body is attached to the cover body so as to receive a reaction force of a pressing support force from the opposite side to the moving direction of the pipe joint at a plurality of different positions displaced in the facing direction of the base portion and the top wall portion when pressed by the moving pipe joint. It is a pipe joint arrangement structure characterized by this.

[0039] The invention according to claim 16 is an expression of grasping the invention according to claim 12 from the aspect of "pipe joint arrangement structure", and has the same operational effects as the invention according to claim 12.

[0040] In the invention according to claim 17, a pipe joint to which a fluid pipe is connected is arranged inside a cover body that forms an arrangement space inside, a movement restricting body having an attachment portion is arranged at an extension end of the fluid pipe connected to the pipe joint, and is attached to an attachment portion of the base, When the movement restricting body is pressed by the pipe joint that has moved to the extension end of the fluid pipe, the movement restricting body contacts the moving pipe joint on the side opposite to the attachment portion with respect to the axis of the fluid pipe and presses the base, thereby receiving a reaction force of the pressing force due to the pressing. It is a pipe joint arrangement structure characterized by this.

[0041] The invention according to claim 17 is an expression of grasping the invention according to claim 13 from the aspect of "pipe joint arrangement structure", and has the same operational effects as the invention according to claim 13.

Effects of the Invention

[0042] According to the present invention, when a pipe joint connected to a fluid pipe thermally linearly expanded moves a predetermined length in the expansion direction of the fluid pipe within a pipe joint cover, after the pipe joint abuts against the abutting portion of a movement restricting body attached to the pipe joint cover, the movement restricting body presses a pressed portion of the pipe joint cover with a predetermined pressing force by a pressing reaction force receiving portion formed on a surface opposite to the abutting portion, and thus the pressing reaction force receiving portion of the movement restricting body receives a reaction force of the pressing force. Due to the above-described mechanical action of the movement restricting body, even when the movement restricting body receives a large pressing force from the pipe joint, it can maintain its original attached posture without tilting or the like, and thus the linear expansion of the fluid pipe caused by heat can be effectively blocked at the portion of the pipe joint accommodated within the pipe joint cover.

Brief Description of the Drawings

[0043]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Figure 17

Figure 18

Figure 19

Figure 20

Figure 21

Figure 22

Figure 23

Figure 24

Figure 25

Figure 26

Figure 27

Figure 28

Figure 29

Figure 30

Modes for Carrying Out the Invention

[0044] Hereinafter, the present invention will be described in more detail with reference to a plurality of preferred embodiments.

Embodiment

[0045] First, referring to FIGS. 1 and 9 to 11, each fluid pipe P of a small diameter and a large diameter 1 , P 2 and each pipe joint K for connecting 1 , K 2The pipe joint cover C of Example 1 for accommodating and protecting 1 and each of the said pipe joints K 1 ,K 2 Two fluid pipes P linearly connected by 1 (P 2 ) The fluid pipe protection cover C for accommodating and protecting 11 As well as the said pipe joint cover C 1 and the connection structure outline between the said fluid pipe protection cover C 11 will be described, and then, the pipe joint cover C according to the present invention 1 will be described in detail. That is, the pipe joint cover C 1 and the fluid pipe protection cover C 11 are shared by two types of pipe joints K with different sizes 1 ,K 2 and two types of fluid pipes P with different sizes 1 ,P 2 .

[0046] The fluid pipe P with a small diameter 1 The pipe joint K connecting 1 is formed by injection molding of resin. As shown in Fig. 1, on the inner peripheral surface of the central part along the axial direction of the cylindrical joint body 1 having an inner diameter corresponding to the outer diameter of the fluid pipe P to be connected 1 , a ring-shaped contact part 2 with which the end face of the fluid pipe P 1 contacts is provided. When each fluid pipe P 1 is inserted from both ends of the joint body 1 and its end face is brought into contact with the contact part 2 respectively, the two fluid pipes P 1 are linearly connected via the pipe joint K 1 .

[0047] The pipe joint cover C 1 consists of a base V fixed to the installation surface 1 and a lid body L covered on the base V 1 . The internal space formed by both V 1 ,L 1 forms a placement space 10 for placing and accommodating the pipe joint K 1 (K 1 (K 2 ). On the said base V 1 , due to heat, the fluid pipe P1 Due to the linear expansion of 1 , the movement of the pipe joint K accommodated and disposed in the installation space 10 1 is restricted by the movement restricting body A 1 being attached is a characteristic part of the present invention. The pipe joint K 1 (K 2 ) is accommodated and protected by the pipe joint cover C 1 At both longitudinal ends of 1 , two fluid pipes P 1 (K 2 ) connected by 1 are accommodated and protected by the fluid pipe protection cover C 11 The configuration of being connected is the same as the conventional one. The fluid pipe protection cover C 11 is, like the pipe joint cover C 1 composed of a base V 11 and a lid body L covered on the base V 11 The base V 11 of the pipe joint cover C 1 and the lid body L 1 as well as the base V 1 and the lid body L 11 of the fluid pipe protection cover C 11 are all formed by injection molding of resin. 11 The base V

[0048] of the pipe joint cover C 1 is, as shown in FIGS. 2 to 4, rectangular in plan view, and standing wall portions 12 are erected at both ends in the width direction of the thick plate-like substrate portion 11, standing perpendicularly to the substrate portion 11. On the inner surface of each standing wall portion 12 on the side of the installation space 10, a plurality of groove forming plate portions 13 are formed in a protruding state over the entire height at regular intervals along the longitudinal direction of the substrate portion 11, excluding the central portion in the longitudinal direction. The space between adjacent groove forming plate portions 13 forms a groove portion 14 into which the outer edge portions of the respective lateral extending portions 41 of the movement restricting body A 1 are partially fitted. Therefore, the groove portion 14 is formed on the base V 1 1 ​It is continuously formed over the entire height of the standing wall portion 12. The protruding length of the groove forming plate portion 13 with respect to the standing wall portion 12 maintains the same protruding length from the upper end to the central portion along the height direction of the standing wall portion 12. However, in the portion from the central portion to the lower end along the height direction of the standing wall portion 12, the protruding length becomes larger (longer) toward the lower end, and at the lower end, it reaches the pair of rib portions 15 of the substrate portion 11. The rib portions 15 of the substrate portion 11 are formed in a pair in a form bulging inward at portions close to both ends in the width direction in order to increase the bending force along the longitudinal direction of the substrate portion 11. Among the plurality of groove forming plate portions 13 described above, the groove forming plate portions 13' at both ends in the longitudinal direction are different in shape from the remaining groove forming plate portions 13, and the protruding length toward the side of the arrangement space 10 is larger. The reason is that for a pipe joint (not shown) of a specific length for connecting a fluid pipe P with a large pipe diameter 2 In the case of, by arranging both end faces of the pipe joint close to or in contact with the inner surface of the groove forming plate portion 13', without using a separate movement restricting body, due to the linear expansion of the fluid pipe P caused by heat 2 , it is possible to prevent the movement of the pipe joint. The base V 1 and the lid body L 1 constitute the cover body C 0 .

[0049] At the central portion in the height direction on the bottom surface of each groove portion 14, a locked protrusion 16 is formed that locks with either one of the first and second locking protrusions 44, 45 provided on the pair of side extending portions 41 of the movement restricting body A 1 . As shown in FIGS. 10 and 12, a pipe joint K 1 (P 2 ) connecting two fluid pipes P 1 (K 2 ) is accommodated and arranged in the arrangement space 10 of the base V 1 , and at portions close to each end face of the pipe joint K 1 (P 2 ) in each fluid pipe P 1 (K 2 ), movement restricting bodies A 1 are fitted in an inverted U shape or a U shape, and the outer edge portions of the pair of side extending portions 41 of each movement restricting body A 1 are the base V1 are fitted into the respective groove portions 14 facing each other along the width direction. And in the groove portion 14, when the pipe joint K 1 (K 2 ) moves along the moving direction Q (Q') of the inner side surfaces facing each other, the inner side surface where the pipe joint K 1 moves to functions as a pressing force support surface 14a that supports the pressing force F (see FIG. 15) of the movement restricting body A 1 (P 2 ). When the pipe joint K 1 moves due to the linear expansion of the fluid pipe P 1 , the portion of the side extending portion 41 of the movement restricting body A 1 fitted into the groove portion 14 functions as a pressing reaction force receiving surface 49 that receives the reaction force of its own pressing force F. Incidentally, since the above-described locked protrusion 16 is formed in a protruding state with respect to the bottom surface of the groove portion 14, for the molding of the locked protrusion 16, it is indispensable to use the same number of rod-shaped slide molds as the number of the locked protrusions 16 that vertically penetrate the molding space of the substrate portion 11 in the molding die. By pulling out the slide mold, a through hole 24 having a square cross section is formed directly below each locked protrusion 16 in the substrate portion 11.

[0050] Base V 1 At both longitudinal ends of the substrate portion 11, there are provided raised contact portions 17 that can abut against the connecting portions 42 of the movement restricting body A 1 arranged in a U-shape, which are raised with respect to the surface of the substrate portion 11 and formed along the width direction. At the central portion in the width direction of the surface of the substrate portion 11, a central display concave stripe 18 is formed along the longitudinal direction of the substrate portion 11. At both longitudinal ends of the central display concave stripe 18 and at portions close to the respective raised contact portions 17, screw insertion holes 19 for screws 91 for fixing the base V 1 to the installation surface are formed. At both end faces in the longitudinal direction of the substrate portion 11, a pair of alignment protrusions 21 for aligning the base V 1 of the pipe joint cover C 1 and the base V 1 of the fluid pipe protection cover C 11 connected to the base V 11 in the width direction are provided protruding in the longitudinal direction of the substrate portion 11.

[0051] Base V 1 At the lower end of the outer surface of the pair of standing wall portions 12 of the base V, there are a pair of locked protrusions 22 of a predetermined length that are locked with the locking protrusions 35 of the lid L 1 formed along the longitudinal direction of the base V, and at the outer end of each locked protrusion 22 on the outer surface of each standing wall portion 12, there is a locking protrusion contact portion 23 that prevents the lid L 1 from sliding significantly in the longitudinal direction of the base V when each locked protrusion 22 of the base V 1 and each locking protrusion 35 of the lid L 1 are locked, and the outer end of each locking protrusion 35 abuts, and is formed downward (toward the bottom surface of the substrate portion 11). 1 with respect to the base V 1 the lid L 1 from sliding significantly in the longitudinal direction of the base V

[0052] Next, with reference to FIGS. 5 and 6, the lid L 1 assembled integrally with the base V 1 will be described. The lid L 1 is formed such that the upper ends of the pair of side plate portions 31 arranged opposite to each other are connected by a flat top plate portion 32, and an assembly opening 33 is formed between the lower ends of the pair of side plate portions 31. At both longitudinal ends, there are fitting openings 34 formed on the outside of the lid L 11 of the fluid pipe protection cover C 11 so as to be fitted. The pair of side plate portions 31 are bent inward at their upper ends and are formed in a C shape in a front view, and the portion formed in the C shape is connected to the top plate portion 32. Both longitudinal ends of the pair of side plate portions 31 are formed such that the opposing width gradually narrows toward the side of the fitting opening 34 so as to fit tightly against the outer surface of the fluid pipe protection cover C 11 . At a portion of the inner surface of the pair of side plate portions 31 close to the assembly opening 33, there are a pair of locking protrusions 35 that can be locked with the pair of locked protrusions 22 of the base V 1 .

[0053] Next, with reference to FIGS. 7 and 8, the base V 1By being partially fitted into the groove portion 14 formed on the inner surface of the pair of standing wall portions 12, the base V 1 The movement restricting body A attached to 1 will be described. The movement restricting body A 1 has an overall U-shaped saddle-like shape and is formed by injection molding of resin. In a state where it is attached to the base V 1 , a pair of side extending portions 41 whose outer edges are partially fitted into the groove portion 14 of each standing wall portion 12 are oppositely arranged, and one end portion of the pair of side extending portions 41 is integrally connected by a connecting portion 42. The movement restricting body A 1 has an overall U-shaped plate shape from one end face, and except for the tilting suppression portion 43 protruding in the thickness direction of the movement restricting body A 1 , the remaining portion has a constant thickness slightly smaller than the groove width of the groove portion 14. Therefore, at the time of injection molding, from the viewpoints of facilitating elastic deformation, weight reduction, and reduction of the resin material used of the pair of side extending portions 41, unnecessary portions are thieved while the necessary functions are exerted. However, since the thieved portions are obvious in the drawing, they are not labeled and the description of such portions is not given. Therefore, when the width of the main body portion of the movement restricting body A 1 and the width of the tilting suppression portion 43 are respectively W 1 , W 2 , the overall width of the movement restricting body A 1 is W 3 (W 3 >W 1 >W 2 ).

[0054] The movement restricting body A having an overall U-shaped saddle-like shape 1 can be attached to the base V by being turned upside down, and thus has a structure that can be shared for two types of fluid pipes P 1 with small diameters and large diameters, P 1 , P 2 . Its inner peripheral surface has a shape in which the inner peripheral surface of the tilting suppression portion 43 having an overall U-shaped plate shape is extended over the entire width in the thickness direction. Correspondingly, on the outer surface of a pair of side extending portions 41 whose outer edges are partially fitted into the groove portion 14 inside each standing wall portion 12 of the base V 1 , there is the movement restricting body A 1In both the normal use and the reverse use, the first and second locking protrusions 44 and 45 that are locked with the locked protrusion 16 formed on the bottom surface of the groove portion 14 are projected at a predetermined interval along the extending direction (longitudinal direction) of the side extending portion 41. The space surrounded by the pair of side extending portions 41 and the connecting portion 42 is each fluid pipe P 1 ,P 2 forms a fluid pipe accommodating space 46 capable of accommodating

[0055] For the piping of the small-diameter fluid pipe P 1 , after accommodating and arranging the pipe joint K 1 connecting two fluid pipes P 1 on both sides in the installation space 10 of the pipe joint cover C 1 on the base V 1 , a movement restricting body A 1 is fitted to a portion close to the pipe joint K 1 in each fluid pipe P 1 . The movement restricting body A 1 is attached to the base V 1 by locking its first locking protrusion 44 with the locked protrusion 16 of the groove portion 14. On the other hand, for the piping of the large-diameter fluid pipe P 2 , after attaching a pair of movement restricting bodies A 1 to a predetermined location on the base V 1 of the pipe joint cover C 1 using the groove portion 14, the pipe joint K 1 connecting two large-diameter fluid pipes P 2 is accommodated and arranged in the installation space 10 of the base V 2 , so that a portion close to the pipe joint K 2 in each fluid pipe P 2 is partially fitted to the pair of already-attached movement restricting bodies A 1 . On the connecting portion 42 of the movement restricting body A 1 , a contact surface forming portion 47 in the shape of a split circle in a front view is formed in a protruding state on the side opposite to the fluid pipe accommodating space 46, and the surface on the side opposite to the tilting suppressing portion 43 in the contact surface forming portion 47 serves as the pipe joint contact surface 48. Also, both surfaces of the outer edge portion that are partially fitted into the opposing groove portions 14 of the pair of standing wall portions 12 in the pair of side extending portions 41 of the movement restricting body A 1 are in contact with the pipe joint K 1The pressing force F acts on the movement restricting body A 1 As a result, in a state where the pressing force support surface 14a of the groove portion 14 supports the pressing force F, pressing reaction force receiving surfaces 49a and 49b (see FIG. 15) that receive the reaction force of the pressing force F acting on the pressing force support surface 14a are formed.

[0056] The base V 1 and the lid body L 1 constitute the cover body C 0 and the cover body C 0 and the pair of movement restricting bodies A 1 constitute the pipe joint cover C 1

[0057] Next, with reference to FIGS. 9 to 15, the operation of disposing (routing) the pipe joint K 1 with respect to the pipe joint cover C 1 using the pair of movement restricting bodies A 1 will be described. First, as shown in FIGS. 9 and 13(a), the base V 1 of the pipe joint cover C 1 and the base V 11 of the fluid pipe protection cover C 11 are connected to each other. In this state, the pipe joint K 1 with small-diameter fluid pipes P 1 connected to both sides is accommodated and disposed in the arrangement space 10 of the base V 1 fixed to the installation surface E using the screws 91, and each fluid pipe P 1 connected to both sides of the pipe joint K 1 is respectively accommodated and disposed in the base V 11 of the fluid pipe protection cover C 11 In this state, the tilting suppression portion 43 of the movement restricting body A 1 is arranged toward both ends of the base V 1 in a portion of each fluid pipe P 1 proximate to the pipe joint K 1 and each side extending portion 41 of the movement restricting body A 1 is arranged along the fluid pipe P 1 ​When it is pushed into the gap with the standing wall portion 12, during the pushing process, each of the side extending portions 41 is elastically deformed slightly inward and then restored to its original shape, and the first locking protrusion 44 on the outer side of each side extending portion 41 and the locked protrusion 16 formed in the groove portion 14 of each standing wall portion 12 are locked. Thus, as shown in FIGS. 10 and 13(b), the pipe joint K 1 The respective movement restricting bodies A arranged opposite to both end faces of 1 is attached to the base V 1 . In this piping example, one of the pair of movement restricting bodies A 1 is attached to one end of a plurality of continuously provided groove portions 14, and the other is attached in the middle thereof. According to the length of the pipe joint K 1 , the most suitable one among the plurality of groove portions 14 is selected. The pair of movement restricting bodies A 1 are arranged in a posture where they are reversed left and right with respect to each other with their tilting suppression portions 43 facing the end portion of the base V 1 . Further, as shown in FIG. 12, the positional relationship along the longitudinal direction between the base V 1 of the pipe joint K and each movement restricting body A 1 is such that a predetermined gap is formed between the end face on the side opposite to the tilting suppression portion 43 of the movement restricting body A 1 and the end face of the pipe joint K 1 , and this gap is the movement allowance D 1 of the pipe joint K 1 . Finally, after covering the lid body L 1 on the base V 11 of each fluid pipe protection cover C, the lid body L 11 is covered with respect to the base V 11 of the pipe joint cover C 1 . Since both longitudinal ends of the lid body L 1 have a narrowing opening width toward both ends, both ends of the lid body L 1 are fitted without a gap to the outside of the end portion of the lid body L 1 of the fluid pipe protection cover C 1 . 11 11

[0058] The movement restricting body A 1 is the base V 1 ​​When attached, as shown in Fig. 14, the pair of left and right laterally extending portions 41 are respectively inserted into the space between the fluid pipe P 1 and each standing wall portion 12. When the movement restricting body A 1 is pushed and inserted, after the pair of laterally extending portions 41 are elastically deformed slightly inward and then restored to their original shapes, among the first and second locking protrusions 44 and 45 formed on the outer surface of each laterally extending portion 41, the first locking protrusion 44 provided on the opening side of the fluid pipe accommodation space 46 and the locked protrusion 16 formed on the bottom surface of the groove portion 14 of the standing wall portion 12 are locked to each other, and the movement restricting body A 1 has a structure that does not easily come out. Also, the arcuate inner peripheral surface on the side of the connecting portion 42 forming the fluid pipe accommodation space 46 is in contact with the outer peripheral surface of the fluid pipe P 1 , and the fluid pipe P 1 is pressed downward by the movement restricting body A 1 .

[0059] Here, in the case of the movement restricting body A 1 and a small-diameter fluid pipe P 1 , as described above, after the pipe joint K 1 is arranged, in order to push it in and attach it from above the pipe joint K 1 , the connecting portion 42 of the movement restricting body A 1 is arranged above the fluid pipe P 1 . However, as will be described later, in the case of a large-diameter fluid pipe P 2 , before the pipe joint K 2 is arranged, it is desirable to attach the movement restricting body A 1 to the base V 1 in an upside-down posture with the connecting portion 42 below. The reason is that regardless of the diameter of the pipe, the fluid pipes P 1 , P 2 are accommodated in the common fluid pipe protection cover C 11 and supported by the pair of elastically deformable pipe support pieces 81 of the base V 11 . Therefore, compared with the large-diameter fluid pipe P 1 , the elastic deformation amount of the pair of pipe support pieces 81 is small for the small-diameter fluid pipe P 2 , so it is relatively easy to be arranged upward, and the movement restricting body A 1The connecting part 42 causes the fluid pipe P with a small diameter, which is relatively easily arranged above the base V 11 to be pressed downward, enabling the fluid pipe P 1 to be arranged at an appropriate height position. Conversely, in the case of a large-diameter fluid pipe P 1 , since the amount of deformation of the pair of pipe support pieces 81 is relatively large, the fluid pipe P 2 tends to be arranged downward, and the connecting part 42 of the movement restricting body A 2 turned upside down is arranged below the large-diameter fluid pipe P 1 to prevent the large-diameter fluid pipe P 2 from dropping downward relative to the appropriate height position. Note that the pair of pipe support pieces 81 has a function of determining the position of the axis of the supported fluid pipes P 2 (preventing the axis from shifting in the left-right direction). 1 ,P 2

[0060] And, when there is no thermal linear expansion in each fluid pipe Pconnected to the pipe joint K 1 , as shown in FIG. 12, between both end faces of the pipe joint K 1 and the pipe joint contact surfaces 48 of the respective movement restricting bodies A 1 opposing these both end faces, there are respectively formed movement margins D 1 of the pipe joint K 1 . In this state, due to the thermal linear expansion of the fluid pipe P 1 , the pipe joint K 1 is moved in the direction of arrow Q, and one end face (the left end face in FIG. 12) of the pipe joint K 1 contacts the pipe joint contact surface 48 of the movement restricting body A 1 arranged on the left side in FIG. 12, then the movement restricting body A 1 is pressed in the movement direction Q of the pipe joint K 1 . As a result, as shown in FIG. 16, the outer edge portions of the pair of left and right side extending portions 41 of the movement restricting body A 1 form the groove portion 14 of the standing wall portion 12 of the base V 1 among the opposing pressing force support surfaces 14a that form the groove portion 14, and the pipe joint K 1 1 ​is pressed against and supported by one of the pressing force support surfaces 14a disposed at the destination of movement, and the reaction force of the pressing force F acts on the pressing reaction force receiving surface 49a of the outer edge portion on one side of one of the pair of left and right side extending portions 41 of the movement restricting body A 1 so that the movement of the pipe joint K 1 in the direction of the arrow Q is blocked. Thereby, the pipe joint K 1 connecting a plurality of fluid pipes P 1 is housed and disposed in the pipe joint cover C 1 so that the linear expansion of the plurality of fluid pipes P 1 due to heat can be blocked at the portion of the pipe joint K 1 and prevented from being concentrated at a specific location. In particular, in the above-described Example 1, the pressing force F of the pipe joint K 1 is evenly divided and acts on each of the pressing force support surfaces 14a of the pair of left and right groove portions 14 via the pair of left and right side extending portions 41 of the movement restricting body A 1 , so there is an advantage of good mechanical balance.

[0061] Also, due to the movement of the pipe joint K 1 , the pressing force F acting on the pipe joint contact surface 48 of the movement restricting body A 1 acts so as to tilt the movement restricting body A 1 . However, as shown in FIG. 12, on the side opposite to the pipe joint contact surface 48 of the movement restricting body A 1 , a U-shaped plate-like tilting suppressing portion 43 is projected in the width direction (thickness direction) of the movement restricting body A 1 and is partially formed wide. Therefore, when the movement restricting body A 1 is attached to the base V 1 and the bent portion of the tilting suppressing portion 43 is in close contact with the outer peripheral surface of the fluid pipe P 1 , at the portion where the tip portion 43a in the width direction of the tilting suppressing portion 43 is pressed against the outer peripheral surface of the fluid pipe P 1 , the tilting of the movement restricting body A 1 is prevented or suppressed, so that the arrangement posture of the movement restricting body A 1 with respect to the fluid pipe P 1 is not disrupted. Therefore, the pipe joint K 1 acting on the pressing force support surface 14a of the groove portion 14 via the movement restricting body A 1The pressing force F can be maintained perpendicular to the pressing force support surface 14a, and the pressing force F can be stably supported.

[0062] Also, when the pipe joint K 1 moves in the direction of arrow Q', another movement restricting body A arranged on the right side in Fig. 12 1 is interposed, and the pressing force F of the pipe joint K 1 is evenly divided and acts on the pressing force support surfaces 14a of the respective other opposing groove portions 14, so that the cumulative linear expansion due to heat of the plurality of fluid pipes P 1 is blocked at the portion of the pipe joint K 1

[0063] Also, for some reason, after attaching the movement restricting body A 1 to the base V 1 if it becomes necessary to remove the movement restricting body A 1 as shown in Fig. 16, by inserting the tip of the minus driver 92 between one standing wall portion 12 of the base V 1 and the laterally extending portion 41 of the movement restricting body A 1 inside it and prying, a part of the one standing wall portion 12 is elastically deformed outward, and when the tip of the minus driver 92 is hooked on the second locking projection 45 and pried upward, the locking between the locked projection 16 of the one standing wall portion 12 and the first locking projection 44 of the one standing wall portion 12 is released, and the movement restricting body A 1 can be removed. Therefore, the second locking projection 45 functions as a hooking portion for the minus driver 92.

[0064] Next, with reference to Figs. 17 to 23, regarding the piping (pipe arrangement) work of the pipe joint K 1 of the large-diameter fluid pipe P 1 with respect to the pipe joint cover C 2 using a pair of movement restricting bodies A 2 only the parts different from those of the pipe joint K 1 of the small-diameter fluid pipe P 1 described above will be explained. In the case of the large-diameter fluid pipe P 2 the pair of movement restricting bodies A 1 are the same as those of the small-diameter fluid pipe P described above​1 Unlike the case of , it is turned upside down so that the connecting part 42 is arranged downward, and moreover, before the pipe joint K 2 is installed, on the base V 1 By fitting the outer edge portions of the pair of left and right laterally extending portions 41 into the respective groove portions 14 at both ends of the base V 1 a pair of movement restricting bodies A 1 are attached to the base V. This state is shown in FIGS. 18 and 20, and the large-diameter fluid pipe P 2 The pipe joint K 2 has a larger outer diameter and a longer length than the small-diameter fluid pipe P 1 The pipe joint K 1 Therefore, among the plurality of groove portions 14 formed along the longitudinal direction inside each standing wall portion 12 of the base V 1 the groove portions 14 at both ends are selected for the pair of movement restricting bodies A 1 .

[0065] Base V 1 When the inverted movement restricting body A 1 is pushed into the opposing groove portions 14 formed inside each standing wall portion 12 of the base V 1 as shown in FIG. 21(a), the outer edge portions of the pair of laterally extending portions 41 are fitted into the respective groove portions 14, and each second locking projection 45 near the connecting portion 42 of the movement restricting body A 1 is locked to each locking projection 16 formed on the bottom surface of each groove portion 14 of the base V 1 so that the pair of movement restricting bodies A 1 are attached to the base V in an upside-down posture with the connecting portion 42 arranged downward and with the connecting portion 42 in contact with the substrate portion 11 of the base V 1 . Note that on the inner surface of the lid body L 11 of the fluid pipe protection cover C 11 a heat insulating material 82 for heat insulation of the hot water supply fluid pipe P 1 (P 2 ) is arranged.

[0066] Next, the pipe joint K 2 to which the large-diameter fluid pipes P are connected on both sides 2 is placed on the base V 1When it is accommodated and disposed in the installation space 10, as shown in FIGS. 19, 21(b) and 22, the large-diameter fluid pipe P 2 in the pipe joint K 2 the portion close to is pushed between the pair of left and right side extending portions 41 of the attached movement restricting body A 1 and the pair of side extending portions 41 are elastically deformed outward so that the opening of the fluid pipe accommodation space 46 becomes wider, and the end of the fluid pipe P 2 is accommodated between the pair of left and right side extending portions 41 elastically deformed outward, and due to the outward elastic deformation of the pair of left and right side extending portions 41 of the movement restricting body A 1 both longitudinal ends where each movement restricting body A 1 is attached to the pair of standing wall portions 12 of the base V 1 are partially elastically deformed outward, and the central portion, which is the remaining portion of the pair of standing wall portions 12, maintains non-deformation. As described above, in the state where the pipe joint K 1 is disposed in the installation space 10 of the base V 2 a movement margin D 2 of the pipe joint K 1 is formed between both end faces of the pipe joint K 2 and the end face on the side opposite to the tilting suppression portion 43 in the movement restricting body A 2 .

[0067] In the case of the pipe joint K 2 a pair of movement restricting bodies A 1 are arranged upside down, and the end face of the pipe joint K 1 which is moved by the linear expansion of the fluid pipe P 1 due to heat abuts on the portion of the pipe joint contact surface 48 of each movement restricting body A 2 arranged close to the substrate portion 11 of the base V 2 and applies a pressing force F to the pipe joint contact surface 48. Except for this point, the function of restricting the movement of the pipe joint K 2 is the same as that in the case of the pipe joint K 1 for the small-diameter fluid pipe P 1 .

[0068] In the first embodiment, the movement restricting body A 1Since one end of a pair of laterally extending portions 41 is connected by a connecting portion 42 and the whole has an integral structure, there is an advantage that it is easy to handle. However, the movement restricting body A 1 The pair of laterally extending portions 41 may be separated without being connected by the connecting portion 42 and used independently. Further, in the first embodiment, the movement restricting body A 1 is configured to be attached to the base V 1 , but it may also be configured to be attached to the lid body L 1 .

[0069] The pressing force support surface 14a of the groove portion 14 and the pressing reaction force receiving surface 49 of the movement restricting body A 1 in the first embodiment are both configured as continuous planes over the entire height. However, if a plurality of planar or protruding pressing reaction force receiving portions are formed at different positions along the height direction of the groove portion 14 on the pressing reaction force receiving surface 49, the reaction force of the pressing force of the pipe joint K 1 is received at a plurality of different positions along the height direction of the groove portion 14, so that there is an advantage that the state of receiving the pressing reaction force is further stabilized.

[0070] In the first embodiment, the movement restricting body A 1 is partially fitted to a portion of the fluid pipe P 1 connected to the pipe joint K 1 near the end face of the pipe joint K 1 . However, a pair of groove portions 14 are formed on the side in the axial direction of the cylindrical pipe joint K 1 to form a small-diameter portion with a smaller outer diameter, and the movement restricting body A 1 is fitted to the small-diameter portion. By fitting the outer edge portions of the pair of laterally extending portions 41 into the respective groove portions 14 inside the respective standing wall portions 12 on both sides thereof, due to the movement of the pipe joint K 1 , the movement restricting body A 1 can be brought into contact with the end face formed between the general portion and the small-diameter portion of the pipe joint K 1 , and it is also possible to attach the movement restricting body A 1 to the base V 1 . 1

Embodiment

[0071] ​ Next, with reference to FIGS. 24 to 27, the pipe joint cover C of Example 2 of the present invention 2 is denoted by the same reference numerals as those of the pipe joint cover C of Example 1 1 for the same parts, and only the different parts will be described. The base V of the pipe joint cover C 2 is configured such that the portion directly above the locked projection 22 in the base V of Example 1 2 is cut parallel to the substrate portion 11, and the pair of standing wall portions 12 are missing. Therefore, at both ends in the width direction of the base V 1 a plurality of shallow groove portions 52 are formed at regular intervals along the longitudinal direction between the groove forming plate portions 51 having a low height. 2

[0072] The movement restricting body A 2 is such that a hook plate portion 53 in the shape of a right-angled triangle is integrally formed outside the tilting suppression portion 43 on the end face of the pair of side extending portions 41 of the movement restricting body A 1 on the side where the tilting suppression portion 43 is formed. The lower end face of the hook plate portion 53 is formed perpendicular to the end faces of the pair of side extending portions 41, and the arrangement position along the height direction of the lower end face is disposed slightly below the lower end of the tilting suppression portion 43.

[0073] Then, as shown in FIGS. 26 and 27, the lower end portions of the respective side extending portions 41 of the pair of movement restricting bodies A 2 are inserted into the respective groove portions 52 facing each other in the width direction of the substrate portion 11, and the lower end face of the hook plate portion 53 is brought into contact with the upper surface of the groove forming plate portion 51, and a pair of movement restricting bodies A 2 are attached to positions corresponding to the length of the pipe joint K 1 in the base V. A lid body (not shown) is integrally assembled to the base V 2 using the pair of locked projections 22. In Example 2, the lower end portions of the pair of side extending portions 41 of the movement restricting body A 2 constitute attachment portions, and the groove portions 52 constitute attached portions. Note that the upper end portion 53b of the hook plate portion 53 is the pipe joint K 2 1As the [[ID=]] approaches the pipe joint contact surface 48 on which the pressing force acts due to the movement of [[ID=]], the hooking plate portion 53 holds the pressing force, and the movement restricting body A 2 The effect of maintaining the original standing arrangement shape of [[ID=]] is enhanced.

[0074] Pipe joint K 1 moves in either the axial direction of the fluid pipe P 1 and presses the pipe joint contact surface 48 of one of the movement restricting bodies A 2 When this occurs, the lower end surface 53a of the hooking plate portion 53 presses the upper surface of the groove forming plate portion 51 due to the pressing force, thereby restricting the movement of the pipe joint K 1 . Accordingly, the lower end surface 53a of the hooking plate portion 53 functions as a pressing reaction force receiving surface.

Embodiment

[0075] Next, referring to FIG. 28, for the pipe joint cover C of Embodiment 3 of the present invention 3 the same parts as those of the pipe joint cover C of Embodiment 1 1 will be described with the same reference numerals but with a prime (') added. The base V of the pipe joint cover C 3 has standing wall portions 12' vertically standing at both ends in the width direction of the substrate portion 11', and groove portions 14' are formed to face each other from the upper end to a predetermined height position at predetermined locations on each of the standing wall portions 12'. The movement restricting body A 3 is in an inverted U shape, and side extending portions 62 that are press-fitted into the respective groove portions 14' are integrally formed at both ends of a contact surface forming portion 61 of an arc plate portion having a constant width that is disposed on the outer peripheral surface of the fluid pipe P 3 . Therefore, a surface of the contact surface forming portion 61 that faces the end surface of the pipe joint K 1 forms a pipe joint contact surface 63, and a surface of the outer edge portions of the pair of side extending portions 62 that is opposite to the pipe joint contact surface 63 forms a pressing reaction force receiving surface 64. The entire movement restricting body A 1 is disposed in the space on the side opposite to the substrate portion 11' when bisected by a virtual plane passing through the axis J of the pipe joint K 3 and parallel to the substrate portion 11'. Note that on the outer side surfaces of the pair of standing wall portions 12', the base V 1 is... 3A locked projection 22’ to be locked with a locking projection of a lid body integrally assembled thereto is formed.

[0076] Therefore, similar to the pipe joint cover C of Embodiment 1 1 When the pipe joint K 1 moves to either side, the end face of the pipe joint K 1 contacts the pipe joint contact surface 63 of the movement restricting body A 3 and presses the movement restricting body A 3 The pressing force is pressed and supported by the inner surface of the pair of opposing inner surfaces of the groove portion 14’ located at the moving destination of the pipe joint K 1 and the reaction force is received by the pressing reaction force receiving surface 64 of the movement restricting body A 3 Therefore, the pipe joint K 1 moved by the linear expansion of the fluid pipe P 1 due to heat does not move further in the same direction after contacting the movement restricting body A 3 In particular, in Embodiment 3, when the entire movement restricting body A 3 is bisected by a virtual plane passing through the axis J of the pipe joint K 1 and parallel to the substrate portion 11’, it is arranged in the space on the side opposite to the substrate portion 11’. Since the pipe joint contact surface 63 and the pressing reaction force receiving surface 64 of the movement restricting body A 3 are close to each other, the bending force (bending moment) of the pressing force acting on the entire curved plate-shaped movement restricting body A 3 becomes small, so there is an advantage that the movement of the pipe joint K 1 can be surely stopped.

Embodiment

[0077] Next, referring to FIG. 29, for the pipe joint cover C of Embodiment 4 4 For the same or equivalent parts as the pipe joint cover C 3 only the illustration is made with “’” attached. The base V 4 of the pipe joint cover C 4 is U-shaped in order to partially support the small-diameter fluid pipe P 1 from below. Groove portions 14’ are formed in each standing wall portion 12’ of the base V 4 substantially over the entire height, and the movement restricting body A4 Each side extending portion 62 is inserted entirely into a groove portion 14' formed almost to the full height inside each standing wall portion 12', so that the movement restricting body A 4 is disposed close to the substrate portion 11'. Also in Example 4, the movement restricting body A 4 as a whole is 1 when bisected by a virtual plane parallel to the substrate portion 11' passing through the axis J of the pipe joint K, is disposed in the space on the side of the substrate portion 11', and moreover, since the pipe joint contact surface 63' and the pressing reaction force receiving surface 64' are close to each other, the bending force of the pressing force acting on the movement restricting body A 4 which is in a generally curved plate shape as a whole is reduced, so that there is an advantage that the movement of the pipe joint K 1 can be surely stopped.

Example

[0078] Next, with reference to FIG. 30, for the pipe joint cover C of Example 5 of the present invention 5 for the pipe joint cover C 3 the same or equivalent parts are only illustrated with "''", and only the different parts will be described. The movement restricting body A of Example 5 5 is a rod-shaped body with a square cross-section in which a part of the outer side in the cross-section is fitted into a groove portion 14'' formed in each standing wall portion 12'' of the base V 5 and the remaining inner part protrudes into the arrangement space 10''. Therefore, when the pipe joint K 1 moves, the surface of the protruding part in the arrangement space 10'' of a pair of left and right movement restricting bodies A 5 vertically attached to the left and right standing wall portions 12'' that faces the pipe joint K 1 acts as a pipe joint contact surface 71, and a force of (F / 2) obtained by equally bisecting the pressing force F acts on each pipe joint contact surface 71 of the pair of left and right movement restricting bodies A 5 and at the same time, the surface opposite to the pipe joint contact surface 71 in the movement restricting body A 5 functions as a pressing reaction force receiving surface 72, so that the pressing force F of the pipe joint K 1 is supported by a pair of left and right rod-shaped movement restricting bodies A 5 . Note that a pair of left and right movement restricting bodies A 5Without using it, the movement restricting body A is attached only to one of the left and right sides 5 Even if it is attached, the pipe joint K 1 can support the pressing force F

[0079] In the above Example 5, the rod-shaped movement restricting body A 3 is vertically attached inside each standing wall portion 12'' of the base V 5 so that the movement restricting body A 5 holds the pressing force of the pipe joint K 1 . However, the rod-shaped movement restricting body A 1 is horizontally arranged so that the upper end or the lower end of the end face of the pipe joint K 5 can come into contact, and both ends thereof can be attached to each standing wall portion 12'' of the base V 5 by a both-end support structure

Explanation of Signs

[0080] A 1 ~A 5 : Movement restricting body C 0 : Cover body C 1 ~C 5 : Pipe joint cover D 1 ,D 2 : Movement allowance of the pipe joint F: Pressing force of the pipe joint J: Axis of the fluid pipe K 1 ,K 2 : Pipe joint L 1 : Lid of the pipe joint Q, Q’: Movement direction of the pipe joint V 1 ~V 5 : Base of the pipe joint W 1 : Width of the main body portion of the movement restricting body W 2 : Width of the tilting suppression portion of the movement restricting body W 3 ; Overall width of the movement restricting body 10: Arrangement space 11: Substrate portion (base portion) 12: Standing wall portion 14: Groove part 14a: Pressing force support surface (pressing force support part) 16: Locking projection 31: Side plate part 32: Top plate part 41: Lateral extension part (attachment part) 42: Connecting part 43: Tilting suppression part 43a: Tip part of tilting suppression part 44: First locking projection 45: Second locking projection 48, 63, 71: Pipe joint contact surface 49, 64, 72: Pressing reaction force receiving surface (pressing reaction force receiving part) 51: Groove forming plate part 52: Groove part (part to be attached) 53: Hooking plate part 53a: Lower end surface of hooking plate part (pressing reaction force receiving surface)

Claims

1. A cover body composed of a base and a lid that are assembled together and form an installation space inside which a pipe joint to which a fluid pipe is connected is disposed, and a movement restricting body that is attached to the cover body and serves as an obstacle to the movement destination of the pipe joint that moves due to linear expansion in the longitudinal direction of the fluid pipe due to heat, and restricts the movement, wherein the movement restricting body includes a pipe joint contact portion that the pipe joint contacts due to the movement, and a pressing reaction force receiving portion that is formed on a surface opposite to the pipe joint contact portion and causes the pressing force exerted by the pipe joint on the movement restricting body due to the contact to act on a pressing force support portion of the cover body via the movement restricting body, and receives a pressing reaction force in a direction opposite to the movement. The pipe joint cover is characterized by this.

2. The movement restricting body has an overall shape that is reverse U-shaped, and is attached to the base after a pipe joint is disposed in the installation space of the cover body. The pipe joint cover according to claim 1 is characterized by this.

3. The movement restricting body has an overall shape that is U-shaped, and a pipe joint is disposed in the installation space of the cover body after the movement restricting body is attached to the base. The pipe joint cover according to claim 1 is characterized by this.

4. The movement restricting body is rod-shaped and is disposed at the movement destination of the pipe joint in the cover body. The pipe joint cover according to claim 1 is characterized by this.

5. A cover body composed of a base and a lid that are assembled together and form an installation space inside which a pipe joint to which a fluid pipe is connected is disposed, and a movement restricting body that is attached to the base and serves as an obstacle to the movement destination of the pipe joint that moves due to linear expansion in the longitudinal direction of the fluid pipe due to heat, and restricts the movement, wherein the entire movement restricting body has a shape that is contained on one side separated by a virtual plane including the axis of the fluid pipe. The pipe joint cover is characterized by this.

6. The base includes a base portion that faces the installation space on the front side and is fixed with the back side facing the installation surface, and a standing wall portion that stands up from the base portion in a direction away from the installation surface and has one surface facing the installation space. A groove portion having a side opening that opens toward the installation space is formed in the standing wall portion. The movement restricting body is formed with a pipe joint contact portion that contacts the moving pipe joint in a state of being fitted in the groove portion. The inner surface on the side where the pipe joint is about to move on the opposing inner surfaces along the moving direction of the groove portion constitutes a pressing force support surface that receives and supports the pressing force from the opposite side of the pipe joint contact portion. The pipe joint cover according to any one of claims 1 to 5, characterized in that.

7. Both the pipe joint contact portion and the pressing force support surface are arranged on the side opposite to the base portion of the base with respect to the axis of the fluid pipe connected by the pipe joint. The pipe joint cover according to claim 6, characterized in that.

8. The groove portion is continuously formed along the standing direction of the standing wall portion of the base, and the pressing force support surface is formed by a plane that continuously extends in the forming direction of the groove portion. The pipe joint cover according to claim 6, characterized in that.

9. The pair of standing wall portions are provided in a pair facing each other so as to sandwich the arrangement space therebetween, and the groove portions are formed on both of the pair of standing wall portions. The movement restricting body has an overall U-shaped shape, and includes a pair of side extending portions arranged on both sides of the fluid pipe or the pipe joint, and a connecting portion connecting the ends on the same side of the pair of side extending portions. The pair of side extending portions are fitted into the groove portions of the pair of standing wall portions and attached to the base. The pipe joint cover according to claim 7, characterized in that.

10. The connecting portion includes a tilting suppression portion that is widened with respect to the interval between the opposing inner surfaces by protruding in the moving direction of the pipe joint with respect to the opposing inner surfaces of the groove portion along the axial direction of the fluid pipe. The pipe joint cover according to claim 9, characterized in that.

11. The cover body can accommodate a pipe joint that connects two fluid pipes in a straight line with their respective ends facing each other. Two movement restricting bodies can be attached to the cover body facing the end faces of the pipe joint connecting the two fluid pipes. The pipe joint cover according to claim 9, characterized in that.

12. When the movement restricting body is pressed by the moving pipe joint, it receives the pressing support force from the side opposite to the moving direction of the pipe joint at a plurality of different positions shifted in a direction orthogonal to the axial direction of the fluid pipe. The pipe joint cover according to any one of claims 1 to 5, characterized in that.

13. A cover body composed of a base and a lid body that are assembled with each other and form an internal arrangement space for arranging a pipe joint to which a fluid pipe is connected. A movement restricting body that becomes an obstacle to the destination of movement of the pipe joint that moves due to linear expansion in the longitudinal direction of the fluid pipe due to heat and restricts the movement. The movement restricting body has a mounting portion mounted on the base, a pipe joint abutting portion against which the pipe joint abuts due to the movement, and a pressing force exerted by the pipe joint on the movement restricting body due to the abutment is applied to the pressing force support portion of the cover body through the movement restricting body, and a pressing reaction force receiving portion that receives a pressing reaction force in the direction opposite to the movement. A pipe joint cover characterized by that.

14. The pressing reaction force receiving portion of the movement restricting body extends to the side opposite to the pipe joint abutting portion so as to prevent rotation about the mounting portion pressed by the pipe joint due to the movement, and the extended end thereof abuts against the base and presses. The pipe joint cover according to claim 13, characterized in that it is composed of a bracing portion.

15. Inside the cover body that forms a disposal space inside, a pipe joint to which a fluid pipe is connected is disposed. A movement restricting body is attached to the cover body so as to abut against the moving pipe joint on one side of the space separated by a virtual plane including the axis of the fluid pipe when the pipe joint is disposed at the extension end beyond the end of the fluid pipe connected to the pipe joint and the pipe joint moves to the extension end and is pressed by the pipe joint, thereby receiving a reaction force of the pressing support force from the side opposite to the moving direction of the pipe joint. A pipe joint arrangement structure characterized by that.

16. A cover body composed of a base and a lid body that are assembled to each other and form a disposal space inside for disposing a pipe joint to which a fluid pipe is connected. The cover body has a movement restricting body that is attached to the cover body and becomes an obstacle to the destination of movement of the pipe joint that moves due to linear expansion in the longitudinal direction of the fluid pipe due to heat, and restricts the movement. The base includes a base portion whose front side faces the disposal space and whose back side is fixed facing the installation surface, and the lid body includes a top wall portion that faces the front side of the base portion and constitutes a surface facing the disposal space. The pipe joint is disposed in the disposal space of the pipe joint cover constituted by the base and the lid body. The movement restricting body is attached to the cover body so as to receive a reaction force of a pressing support force from the side opposite to the moving direction of the pipe joint at a plurality of different positions displaced in the facing direction of the base portion and the top wall portion when pressed by the moving pipe joint. A pipe joint arrangement structure characterized by that.

17. Inside the cover body that forms an internal arrangement space, a pipe joint to which a fluid pipe is connected is arranged. A movement restricting body having an attachment portion is arranged at an extension end of the fluid pipe connected to the pipe joint, and is attached to an attachment portion of a base. When the movement restricting body is pressed by the pipe joint that has moved to the extension end of the fluid pipe, the movement restricting body contacts the moving pipe joint on the side opposite to the attachment portion with respect to the axis of the fluid pipe and presses the base, thereby receiving a reaction force of the pressing force due to the pressing. A pipe joint arrangement structure characterized by this.

Images