Pipe joint cover, pipe joint accommodation device and pipe joint accommodation structure

Abstract

To provide a pipe joint cover which can inhibit the intrusion of water to a pipe joint from the outside.SOLUTION: A pipe joint cover 5 comprises a main body 8 composed of a pair of half bodies 8a, 8a, and an inside waterproof cover 9. The main body 8 has an accommodation space 8e therein, and a pipe joint 4 is accommodated in the accommodation space 8e. A fluid pipe 2 is connected to the pipe joint 4, and a corrugated pipe 3 is attached to the pipe joint so as to accommodate and protect the fluid pipe 2. The main body 8 has a connection port 8f to which an end part of the corrugated pipe 3 is connected. A lock part 8g for preventing the come-off of the corrugated pipe 3 from the connection port 8f while intruding into a clearance between protrusive parts 3a, 3a which are aligned with an interval on an external peripheral face of the corrugated pipe 3 is arranged at the connection port 8f. The inside waterproof cover 9 is arranged in the accommodation space 8e of the main body 8 together with the pipe joint 4 in a state for covering the pipe joint 4. A cutoff part 9a for surrounding a tip side rather than a position to which the lock part 8g of the corrugated pipe 3 is locked, and abutting on an entire periphery of the corrugated pipe 3 is arranged at the inside waterproof cover 9.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a pipe joint cover that houses a pipe joint to which a fluid pipe is connected, a pipe joint accommodating device, and a pipe joint accommodating structure. [Background technology]

[0002] Conventionally, in a piping structure, there has been a joint accommodating member for accommodating a joint (for example, see Patent Document 1). As shown in Fig. 15 and Fig. 16, a joint accommodating member 21 in the piping structure is composed of a pair of divided bodies 23, 23 connected by a hinge portion 22 so as to be openable and closable, and the closed position of the divided bodies 23, 23 is maintained by the engagement of a pivot piece 24 with a fitting protrusion 25. A fluid pipe connected to a joint 26 is covered with a heat insulating material 27, and an opening edge portion 28 is formed at each tip of the joint accommodating member 21 so as to protrude inwardly so as to press the heat insulating material 27. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-007494 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, the conventional joint accommodating member 21 described above did not take into consideration the waterproofing required when used outdoors or underground, and it was difficult to prevent water from entering from outside the joint accommodating member 21 to the joint 26.

[0005] The present invention has been made to solve the above-mentioned problems in the conventional art, and its object is to provide a pipe joint cover, a pipe joint accommodating device, and a pipe joint accommodating structure that can prevent water from entering the pipe joint from the outside. [Means for solving the problem]

[0006] In order to achieve the above object, the pipe joint cover, the pipe joint receiving device, and the pipe joint receiving structure according to the present invention have the following configurations. The pipe joint cover according to the invention of claim 1 is a pipe joint cover for accommodating a pipe joint to which a fluid pipe is connected, and includes a main body and an inner waterproof cover. The main body is composed of a pair of halves divided on each side in a direction perpendicular to the flow path direction of the pipe joint, and the halves have an internal accommodation space when assembled together, and the pipe joint is accommodated in the accommodation space. The main body has a connection port to which an end of a corrugated pipe that accommodates and protects the fluid pipe is connected. The connection port is provided with a locking portion that fits between the convex portions arranged at intervals on the outer circumferential surface of the corrugated pipe and prevents the corrugated pipe from slipping out of the connection port. Meanwhile, the inner waterproof cover is arranged in the accommodation space together with the pipe joint in a state of covering the pipe joint. The inner waterproof cover is provided with a water stopper that surrounds the tip side of the corrugated pipe from the position where the locking portion locks, and abuts over the entire circumference of the corrugated pipe. The water stop portion is formed so that the width in the axial direction of the water stop portion is greater than the width of the tip surface of the protruding rib portion.

[0007] According to this pipe joint cover, the pipe joint cover includes a main body consisting of a pair of halves, and an inner waterproof cover. The inner waterproof cover covers a pipe joint to which a fluid pipe is connected, and is disposed in an accommodation space within the main body together with the pipe joint. The main body has a connection port, to which an end of a corrugated pipe that accommodates and protects the fluid pipe is connected. At this time, a locking portion provided at the connection port fits between the ridges arranged on the outer peripheral surface of the corrugated pipe, thereby preventing the corrugated pipe from slipping out of the connection port. The inner waterproof cover is provided with a water stop portion having a width wider than the width of the tip surface of the ridges of the corrugated pipe, and the water stop portion abuts against the entire circumference of the corrugated pipe, thereby sealing off water between the inner waterproof cover and the corrugated pipe. In this way, the pipe joint to which the fluid pipe is connected is covered by an inner waterproof cover provided inside the main body of the pipe joint cover, and further, the space between the inner waterproof cover and the corrugated pipe that houses and protects the fluid pipe is waterproofed, thereby preventing water from entering the pipe joint from the outside.

[0008] The pipe joint cover according to the invention recited in claim 2 is the pipe joint cover recited in claim 1, wherein a positioning portion is formed on the inner surface of the main body for positioning the inner waterproof cover in a state where the inner waterproof cover covers the pipe joint. The positioning portion determines the position of the inner waterproof cover relative to the main body, and therefore determines the position of the water stop portion relative to the locking portion provided at the connection port of the main body, thereby stabilizing water stop between the inner waterproof cover and the corrugated pipe.

[0009] The pipe joint cover according to the invention of claim 3 is the pipe joint cover according to claim 2, wherein the pair of halves are connected to be freely opened and closed by a hinge provided on one side, and have the storage space inside when the other side opposite to the one side is closed. The inner waterproof cover has a storage section that stores the pipe joint, a split surface split along the other side of the pair of halves so as to lead to the storage section from the outside, and clamped parts that are located on both sides of the split surface and protrude outward. When the other side of the pair of halves is closed, the clamped parts are clamped by the pair of halves. This makes it possible to maintain the pipe joint covered by the inner waterproof cover by closing the main body.

[0010] The pipe joint cover according to the invention recited in claim 4 is the pipe joint cover recited in claim 3, wherein the pair of halves include a temporary joint portion that engages with the other side portion by closing it to prevent the other side portion from opening, and a final joint portion that maintains the other side portion in a closed state by screwing in a screw member. By providing the pipe joint cover with the temporary joint portion, it becomes easier to screw in the screw member at the final joint portion thereafter, improving workability.

[0011] Furthermore, a pipe joint cover according to the invention described in claim 5 is a pipe joint cover described in any one of claims 1 to 4, in which an inner surface of at least one of the pair of halves is provided with a positioning recess for positioning a tip of a fastener for fixing the main body to a fixing surface.

[0012] Further, the pipe joint cover according to the invention recited in claim 6 is the pipe joint cover recited in claim 5, wherein the half in which the positioning recess is provided has a flat surface on the outer surface of the half that abuts against the fixing surface.

[0013] The pipe joint cover according to claim 7 is the pipe joint cover according to claim 1, wherein the connection port is a large-diameter connection port provided in the main body itself as the connection port to which a large-diameter corrugated pipe having a relatively large diameter is connected, and a small-diameter connection port is a connection port to which a small-diameter corrugated pipe having a relatively small diameter is connected, and is formed by the large-diameter connection port and an adapter attached to the large-diameter connection port. The large-diameter connection port has a large-diameter corrugated pipe locking portion as the locking portion that locks onto the large-diameter corrugated pipe, and the adapter constituting the small-diameter connection port has a small-diameter corrugated pipe locking portion as the locking portion that locks onto the small-diameter corrugated pipe. The inner waterproof cover has a large diameter water stopping portion as the water stopping portion that abuts against the large diameter corrugated pipe and a small diameter water stopping portion as the water stopping portion that abuts against the small diameter corrugated pipe, the small diameter water stopping portion being arranged side by side with the small diameter water stopping portion being at the tip side of the inner waterproof cover, and the small diameter water stopping portion is provided so as to be removable, so that the small diameter water stopping portion is removed for the large diameter corrugated pipe and is used without being removed for the small diameter corrugated pipe. In this way, the pipe joint cover can be used for both the large diameter corrugated pipe and the small diameter corrugated pipe by removing the small diameter water stopping portion of the inner waterproof cover for the large diameter corrugated pipe and by using an adapter additionally while leaving the inner waterproof cover as it is for the small diameter corrugated pipe.

[0014] The pipe joint accommodating device according to the invention of claim 8 includes a pipe joint to which a fluid pipe is connected and a pipe joint cover for accommodating the pipe joint. Here, the pipe joint cover includes a main body and an inner waterproof cover. The main body is composed of a pair of halves divided on each side in a direction perpendicular to the flow path direction of the pipe joint, and the halves are connected to each other so as to be freely opened and closed by a hinge part provided on one side. When the other side opposite to the one side is closed, the main body has an accommodating space inside, and the pipe joint is accommodated in the accommodating space. The main body has a connection port to which an end of a corrugated pipe that accommodates and protects the fluid pipe is connected. The connection port is provided with a locking part that fits between the ridges arranged at intervals on the outer circumferential surface of the corrugated pipe to prevent the corrugated pipe from slipping out of the connection port. Therefore, when the pipe joint is arranged in the accommodating space, two or more ridges can be arranged between the pipe joint and the locking part. The inner waterproof cover is disposed in the accommodation space together with the pipe joint in a state where the inner waterproof cover covers the pipe joint. The inner waterproof cover is provided with a water stopper that surrounds the tip side of the corrugated pipe from a position where the locking portion locks the corrugated pipe and abuts on the entire circumference of the corrugated pipe.

[0015] According to this pipe joint accommodating device, the pipe joint cover includes a main body consisting of a pair of halves and an inner waterproof cover. The inner waterproof cover covers the pipe joint to which the fluid pipe is connected, and is disposed in the accommodating space in the main body together with the pipe joint. The main body has a connection port, to which an end of a corrugated pipe that accommodates and protects the fluid pipe is connected. At this time, a locking portion provided at the connection port enters between the convex portions arranged on the outer circumferential surface of the corrugated pipe, thereby preventing the corrugated pipe from slipping out of the connection port. The inner waterproof cover is provided with a water stop portion, which abuts against the entire circumference of the corrugated pipe to stop water from entering between the inner waterproof cover and the corrugated pipe. In this way, the pipe joint to which the fluid pipe is connected is covered by the inner waterproof cover provided inside the main body of the pipe joint cover, and further, water is stopped between the inner waterproof cover and the corrugated pipe that accommodates and protects the fluid pipe, thereby preventing water from entering the pipe joint from the outside.

[0016] A pipe joint housing structure according to the invention of claim 9 is a pipe joint cover including a main body and an inner waterproof cover, in which a fluid pipe housed and protected in a corrugated pipe is connected to the pipe joint, and the inner waterproof cover is arranged in an internal housing space of the main body together with the pipe joint while covering the pipe joint. Here, the main body has a connection port, and a locking portion provided at the connection port fits between ridges arranged at intervals on the outer peripheral surface of the corrugated pipe, so that the corrugated pipe is connected to the connection port in a state in which it is prevented from slipping out. Two or more ridges are arranged between the pipe joint and the locking portion, and a water stop portion provided on the inner waterproof cover abuts against at least one of the two or more ridges over the entire circumference.

[0017] According to this pipe joint housing structure, the pipe joint cover includes a main body and an inner waterproof cover. The inner waterproof cover covers the pipe joint to which the fluid pipe is connected, and is disposed in the housing space in the main body together with the pipe joint. The main body has a connection port, to which an end of a corrugated pipe that houses and protects the fluid pipe is connected. At this time, a locking portion provided at the connection port enters between the convex portions arranged on the outer circumferential surface of the corrugated pipe, thereby preventing the corrugated pipe from slipping out of the connection port. The inner waterproof cover is provided with a water stop portion, which abuts against the convex portions of the corrugated pipe over its entire circumference, thereby sealing off water between the inner waterproof cover and the corrugated pipe. In this way, the pipe joint to which the fluid pipe is connected is covered by the inner waterproof cover provided inside the main body of the pipe joint cover, and further, water is stopped between the inner waterproof cover and the corrugated pipe that houses and protects the fluid pipe, thereby preventing water from entering the pipe joint from the outside.

[0018] In addition, the pipe fitting accommodating structure of the invention described in claim 10 is the pipe fitting accommodating structure described in claim 9, wherein the water-stopping portion abuts against two or more of the convex ribs over the entire circumference between the pipe fitting and the locking portion.

[0019] The pipe joint accommodating structure according to claim 11 is the pipe joint accommodating structure according to claim 9 or 10, wherein the main body is composed of a pair of halves divided into each side in a direction perpendicular to the flow path direction of the pipe joint, the halves are connected so as to be freely opened and closed by a hinge provided on one side, and the accommodating space is formed inside when the other side opposite to the one side is closed. The main body is fixed to an upright fixing surface with the other side facing downward.

[0020] Furthermore, the pipe joint accommodating structure according to the invention recited in claim 12 is the pipe joint accommodating structure recited in claim 11, wherein one of the pair of halves of the main body abuts against the fixed surface, and the portion of the one half that abuts against the fixed surface is a flat surface. Effect of the Invention

[0021] According to the pipe joint cover, pipe joint accommodating device, and pipe joint accommodating structure of the present invention, an inner waterproof cover that covers the pipe joint is provided within the main body of the pipe joint cover, and by sealing off the water between the inner waterproof cover and the corrugated pipe, it is possible to prevent water from entering the pipe joint from the outside. [Brief description of the drawings]

[0022] [Figure 1] 1 is an exploded perspective view of a pipe joint accommodating structure according to one embodiment of the present invention; [Diagram 2] FIG. [Diagram 3] FIG. [Figure 4] FIG. [Diagram 5] 4 is a cross-sectional view taken along line AA in FIG. [Figure 6] FIG. 4 is an enlarged cross-sectional view taken along line BB in FIG. [Figure 7] 4 is an enlarged cross-sectional view taken along line CC in FIG. [Figure 8]FIG. 2 is a perspective view of the main body with a pair of halves opened. [Figure 9] FIG. 11 is a side view of the pair of halves of the main body opened. [Figure 10] FIG. 2 is a perspective view of the pair of halves of the main body in a closed state. [Figure 11] FIG. [Figure 12] FIG. [Figure 13] FIG. 2 is a perspective view showing a pipe joint to which a fluid pipe is connected. [Figure 14] FIG. [Figure 15] FIG. 13 is an exploded perspective view of a conventional piping structure. [Figure 16] FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0024] Figures 1 to 14 show one embodiment of the present invention. In the figures, reference numeral 1 denotes a fixing surface. Reference numeral 2 denotes a fluid pipe. Reference numeral 3 denotes a corrugated pipe (sheath pipe) that houses and protects the fluid pipe 2. Reference numeral 4 denotes a pipe joint to which the fluid pipe 2 is connected. Reference numeral 5 denotes a pipe joint cover for housing the pipe joint 4. Reference numeral 6 denotes a pipe joint housing device comprising the pipe joint 4 and the pipe joint cover 5. Reference numeral 7 denotes a pipe joint housing structure.

[0025] The pipe joint cover 5 includes a main body 8 and an inner waterproof cover 9. The main body 8 is composed of a pair of halves 8a, 8a divided on each side in a direction perpendicular to the flow path direction of the pipe joint 4, and the halves 8a, 8a are connected to each other so as to be freely opened and closed by a hinge portion 8c provided on one side portion 8b. The main body 8 has an accommodation space 8e inside when the pair of halves 8a, 8a are closed on the other side portion 8d opposite to the one side portion 8b, and the pipe joint 4 is accommodated in the accommodation space 8e. The main body 8 has a connection port 8f to which an end of the corrugated tube 3 is connected. Here, the connection port 8f is provided with a locking portion 8g that fits between the convex rib portions 3a, 3a arranged at intervals on the outer circumferential surface of the corrugated tube 3 (i.e., locks to the corrugated tube 3) to prevent the corrugated tube 3 from slipping out of the connection port 8f. With the pipe joint 4 accommodated in the accommodation space 8e of the main body 8, two or more convex rib portions 3a of the corrugated pipe 3 can be disposed between the pipe joint 4 and the locking portion 8g.

[0026] In detail, the pair of halves 8a, 8a includes a temporary joint 8h that engages with the other side 8d by closing it to prevent the other side 8d from opening, and a permanent joint 8i that maintains the other side 8d in a closed state by screwing in a screw member 10. In addition, a positioning recess 8j is provided on the inner surface of at least one of the pair of halves 8a, 8a, for positioning the tip of a fastener such as a tapping screw or a nail (not shown) for fixing the main body 8 to the fixing surface 1. In the illustrated embodiment, the positioning recess 8j is provided on the inner surface of both halves 8a, 8a, and the positioning recess 8j of either half 8a is selectively used. The half 8a provided with the positioning recess 8j has a flat surface 8k on the outer surface of the half 8a that abuts against the fixing surface 1.

[0027] The inner waterproof cover 9 is placed in the accommodation space 8e of the main body 8 together with the pipe joint 4 in a state where it covers the pipe joint 4. Here, a positioning portion is formed on the inner surface of the main body 8 for positioning the inner waterproof cover 9 in a state where it covers the pipe joint 4. The inner waterproof cover 9 is also provided with a water stop portion 9a that surrounds the tip side (i.e., the side closer to the pipe joint 4) of the position where the locking portion 8g of the corrugated pipe 3 is locked, and abuts on the entire circumference of the corrugated pipe 3. The water stop portion 9a is formed so that the width of the water stop portion 9a in the axial direction (i.e., the axial direction of the corrugated pipe 3) is wider than the width 3w of the tip surface of the convex portion 3a of the corrugated pipe 3 (see FIG. 14(a)).

[0028] The inner waterproof cover 9 has an accommodation portion 9b for accommodating the pipe joint 4, a split surface 9c split along the other side portion 8d of the pair of halves 8a, 8a (main body 8) so as to connect to the accommodation portion 9b from the outside, and clamped portions 9d, 9d on both sides of the split surface 9c that protrude outward (in the illustrated embodiment, the clamped portions 9d, 9d on both sides of the split surface 9c that protrude outward so as to reach a cover main pipe portion 9i and a cover branch pipe portion 9j, which will be described later). When the other side portion 8d of the pair of halves 8a, 8a is closed, the clamped portions 9d, 9d are clamped by the pair of halves 8a, 8a (more specifically, clamping portions 8z, 8z (see FIG. 8) located on the inside of the other side portions 8d, 8d). In detail, the clamped portion 9d has a protrusion 9e protruding from its tip on the side opposite the cutting surface 9c, and the inside of the protrusion 9e forms a recess 9f, and when the other side portion 8d of the pair of halves 8a, 8a is closed, the clamped portion 8z fits into the recess 9f (see Figure 7).

[0029] In order to selectively connect corrugated tubes 3 of different diameters, the large-diameter connection port 8n as the connection port 8f to which the large-diameter corrugated tube 3c, which is a relatively large diameter corrugated tube 3, is connected is provided on the main body 8 itself (i.e., integrally with the main body 8), and the small-diameter connection port 8p as the connection port 8f to which the small-diameter corrugated tube 3d, which is a relatively small diameter corrugated tube 3, is formed by the large-diameter connection port 8n and an adapter 12 attached to the large-diameter connection port 8n (more specifically, the inside of the large-diameter connection port 8n). The large-diameter connection port 8n has a large-diameter corrugated tube locking portion 8q as the locking portion 8g that locks with the large-diameter corrugated tube 3c, and the adapter 12 constituting the small-diameter connection port 8p has a small-diameter corrugated tube locking portion 12a as the locking portion 8g that locks with the small-diameter corrugated tube 3d (see FIG. 1).

[0030] The inner waterproof cover 9 has a large diameter water stopping portion 9g as the water stopping portion 9a that contacts the large diameter corrugated pipe 3c and a small diameter water stopping portion 9h as the water stopping portion 9a that contacts the small diameter corrugated pipe 3d, which are arranged side by side such that the small diameter water stopping portion 9h is on the tip side of the inner waterproof cover 9, and the small diameter water stopping portion 9h is provided so as to be removable (see FIG. 12). Therefore, the inner waterproof cover 9 is used with the small diameter water stopping portion 9h removed for the large diameter corrugated pipe 3c, and with the small diameter water stopping portion 9h not removed for the small diameter corrugated pipe 3d.

[0031] In the pipe joint housing structure 7, the fluid pipe 2 housed and protected in the corrugated pipe 3 is connected to the pipe joint 4, and in the pipe joint cover 5, the inner waterproof cover 9 is arranged in the housing space 8e inside the main body 8 together with the pipe joint 4 while covering the pipe joint 4. Here, the main body 8 has a connection port 8f, and a locking portion 8g provided in the connection port 8f is inserted between the convex rib portions 3a, 3a arranged at intervals on the outer circumferential surface of the corrugated pipe 3 (i.e., locked to the corrugated pipe 3), so that the corrugated pipe 3 is connected to the connection port 8f in a state in which it is prevented from slipping out. Two or more convex rib portions 3a of the corrugated pipe 3 are arranged between the pipe joint 4 and the locking portion 8g, and a water stop portion 9a provided on the inner waterproof cover 9 abuts on at least one of the two or more convex rib portions 3a, 3a over the entire circumference. In detail, the water blocking portion 9a abuts against two or more convex rib portions 3a, 3a of the corrugated pipe 3 over the entire circumference between the pipe joint 4 and the locking portion 8g.

[0032] In the pipe joint accommodating structure 7, the main body 8 of the pipe joint cover 5 is fixed to the standing fixing surface 1 with the other side part 8d facing downward. In detail, the main body 8 has a pair of halves 8a, 8a, one of which, 8a, abuts against the fixing surface 1, and the portion of the one half 8a that abuts against the fixing surface 1 is a flat surface 8k (see Figs. 6 and 7).

[0033] Specifically, the pipe joint 4 is a T-shaped tee, consisting of a straight-extending main pipe section 4a and a branch pipe section 4b extending at a right angle from the center of the main pipe section 4a. Fluid pipes 2, such as water / hot water supply pipes (water supply pipes or hot water supply pipes) or gas pipes, are connected to both ends of the main pipe section 4a and to the end of the branch pipe section 4b, for example, using an adhesive (not shown).

[0034] In the pipe joint cover 5, the main body 8 is formed in a T-shape together with the accommodation space 8e to match the pipe joint 4. The main body 8 is made of, for example, synthetic resin, and is composed of a main body main pipe portion 8r that extends linearly to cover the joint main pipe portion 4a and a cover main pipe portion 9i described later, and a main body branch trunk portion 8s that extends at a right angle from the center of the main body main pipe portion 8r to cover the joint branch pipe portion 4b and a cover branch pipe portion 9j described later. Both ends of the main body main pipe portion 8r and the end of the main body branch pipe portion 8s form the above-mentioned connection port 8f, and the above-mentioned locking portion 8g is provided at each connection port 8f. The locking portion 8g is composed of a rib that protrudes from the inner peripheral surface of the connection port 8f and is formed to extend in the circumferential direction. In detail, as described above, the large-diameter connection port 8n serving as the connection port 8f is provided in the main body 8 itself, and the large-diameter connection port 8n is provided with the locking portion 8g for the large-diameter corrugated pipe 8q. The small-diameter connection port 8p serving as the connection port 8f is formed by the large-diameter connection port 8n and the adapter 12, and the adapter 12 is provided with the locking portion 8g for the small-diameter corrugated pipe 12a.

[0035] As described above, the main body 8 is composed of a pair of halves 8a, 8a, which are formed by dividing the main body main pipe portion 8r and the main body branch pipe portion 8s. The pair of halves 8a, 8a have the same shape, and are assembled by flipping one over the other. The one side portion 8b is located on the opposite side of the main body main pipe portion 8r from the main body branch pipe portion 8s, and a hinge portion 8c is provided on the one side portion 8b. The hinge portion 8c has a pin 13, and the two halves 8a, 8a can rotate relative to each other with the pin 13 as an axis. On the other hand, the other side portion 8d is located on both sides of the main body main pipe portion 8r on the side of the main body branch pipe portion 8s and the main body branch pipe portion 8s that follows it, sandwiching the accommodation space 8e. Here, the temporary joint portion 8h and the permanent joint portion 8i are provided on the other side portion 8d. The temporary joint 8h is composed of an engagement hole 8t and an engagement protrusion 8u having a claw portion 8v, and when the other side portion 8d of the pair of halves 8a, 8a is closed, the engagement protrusion 8u enters the engagement hole 8t and the claw portion 8v engages with the periphery of the engagement hole 8t. The permanent joint 8i is composed of a pair of screw receiving portions 8w, 8w having holes 8x, and when the other side portion 8d of the pair of halves 8a, 8a is closed, the screw receiving portions 8w, 8w overlap each other. Then, by inserting a screw member 10 into the hole 8x and screwing it in, the screw receiving portions 8w, 8w are joined together and the closed state of the other side portion 8d is maintained.

[0036] The inner waterproof cover 9, like the main body 8, is formed in a T-shape to match the pipe joint 4. The T-shaped inner waterproof cover 9 is accommodated in the T-shaped accommodation space 8e of the main body 8, so that the inner waterproof cover 9 is positioned relative to the main body 8. In other words, the inner surface of the main body 8 that forms the T-shaped accommodation space 8e restricts the movement of the inner waterproof cover 9, so that the inner surface of the main body 8 itself becomes the positioning portion. The inner waterproof cover 9 is made of a soft material that has waterproof properties, such as ethylene propylene rubber (EPDM). The inner waterproof cover 9 is made of a cover main pipe part 9i that extends linearly to cover the joint main pipe part 4a, and a cover branch pipe part 9j that extends at a right angle from the center of the cover main pipe part 9i to cover the joint branch pipe part 4b. Thus, both tip portions of the cover main pipe portion 9i and the tip portion of the cover branch pipe portion 9j become the above-mentioned water stopping portion 9a (specifically, the large diameter water stopping portion 9g and the small diameter water stopping portion 9h). Here, the inner waterproof cover 9 has a notch 9k between the large diameter water stopping portion 9g and the small diameter water stopping portion 9h (see FIG. 12), and the small diameter water stopping portion 9h is cut off by cutting the inner waterproof cover 9 at the notch 9k.

[0037] The adapter 12 is formed in a cylindrical shape so as to cover the small-diameter corrugated tube 3d as the corrugated tube 3, and a small-diameter corrugated tube locking portion 12a as the locking portion 8g is provided on its inner peripheral surface. In detail, the adapter 12 is composed of a pair of adapter halves 12b, 12b divided on each side in a direction perpendicular to the axial direction of the small-diameter corrugated tube 3d, and each adapter half 12b is individually attached to the half 8a of the main body 8. Here, the adapter half 12b has a protruding piece 12c protruding from the outer peripheral surface, and this protruding piece 12c is fitted into a groove 8y provided in the large-diameter connection port 8n (see Figs. 1 and 6).

[0038] In the illustrated embodiment, a large-diameter fluid pipe 2a having a relatively large diameter as the fluid pipe 2 is connected to both end portions of the joint main pipe portion 4a of the pipe joint 4, and a small-diameter fluid pipe 2b having a small diameter as the fluid pipe 2 is connected to the end portion of the joint branch pipe portion 4b. Therefore, a large-diameter corrugated pipe 3c is provided to accommodate and protect the large-diameter fluid pipe 2a, and a small-diameter corrugated pipe 3d is provided to accommodate and protect the small-diameter fluid pipe 2b. In the main body 8, both end portions of the main body main pipe portion 8r become large-diameter connection ports 8n, and the end portion of the main body branch pipe portion 8s becomes a small-diameter connection port 8p to which an adapter 12 is attached. In the inner waterproof cover 9, both end portions of the cover main pipe portion 9i become large-diameter water-stopping portions 9g by removing the small-diameter water-stopping portions 9h, and the end portion of the cover branch pipe portion 9j becomes the small-diameter water-stopping portion 9h as it is.

[0039] Next, the effects of the pipe joint cover 5, pipe joint accommodating device 6, and pipe joint accommodating structure 7 configured as above will be described. The pipe joint cover 5 includes a main body 8 and an inner waterproof cover 9. The inner waterproof cover 9 covers the pipe joint 4 to which the fluid pipe 2 is connected, and is disposed in an accommodating space 8e in the main body 8 together with the pipe joint 4. The main body 8 includes a pair of halves 8a, 8a. The main body 8 has a connection port 8f, to which an end of the corrugated pipe 3 that accommodates and protects the fluid pipe 2 is connected. At this time, a locking portion 8g provided on the connection port 8f fits between the ridge portions 3a, 3a arranged on the outer circumferential surface of the corrugated pipe 3, thereby preventing the corrugated pipe 3 from slipping out of the connection port 8f. The inner waterproof cover 9 is provided with a water-stopping portion 9a, which comes into contact with the entire circumference of the corrugated pipe 3 (more specifically, with the convex rib portion 3a of the corrugated pipe 3), thereby sealing off water between the inner waterproof cover 9 and the corrugated pipe 3. In this way, the pipe joint 4 to which the fluid pipe 2 is connected is covered by the inner waterproof cover 9 provided inside the main body 8 of the pipe joint cover 5, and further, water is stopped between the inner waterproof cover 9 and the corrugated pipe 3 that houses and protects the fluid pipe 2, thereby preventing water from entering the pipe joint 4 from the outside. In other words, by providing the inner waterproof cover 9 that covers the pipe joint 4 inside the main body 8 of the pipe joint cover 5 and sealing off water between the inner waterproof cover 9 and the corrugated pipe 3, water can be prevented from entering the pipe joint 4 from the outside.

[0040] In addition, the position of the inner waterproof cover 9 relative to the main body 8 is determined by the positioning portion on the inner surface of the main body 8, and therefore the position of the water-stopping portion 9a relative to the engaging portion 8g provided at the connection port 8f of the main body 8 is determined, thereby stabilizing the water-stopping between the inner waterproof cover 9 and the corrugated pipe 3.

[0041] The inner waterproof cover 9 has a split surface 9c split along the other side 8d of the pair of halves 8a, 8a constituting the main body 8, and clamped parts 9d, 9d that are located on both sides of the split surface 9c and protrude outward, and when the other side 8d of the pair of halves 8a, 8a is closed, the clamped parts 9d, 9d are clamped by the pair of halves 8a, 8a. This makes it possible to maintain the state in which the pipe joint 4 is covered by the inner waterproof cover 9 by closing the pair of halves 8a, 8a (main body 8).

[0042] Furthermore, by providing the pipe joint cover 5 (more specifically, the main body 8) with the temporary joint portion 8h, it becomes easier to screw the screw member 10 into the permanent joint portion 8i thereafter, improving workability.

[0043] In addition, the large diameter water stopping portion 9g and the small diameter water stopping portion 9h are provided in parallel on the inner waterproof cover 9. Therefore, for the large diameter corrugated pipe 3c, the small diameter water stopping portion 9h of the inner waterproof cover 9 is removed, and for the small diameter corrugated pipe 3d, the inner waterproof cover 9 is left as is and an adapter 12 is additionally used, so that the pipe joint cover 5 can be adapted to both the large diameter corrugated pipe 3c and the small diameter corrugated pipe 3d.

[0044] The present invention is not limited to the above-described embodiment, and various other modifications are possible. For example, the pipe joint 4, the inner waterproof cover 9, and the main body 8 (including the storage space 8e) are formed in a T-shape, but they may be formed in other shapes such as an I-shape or an L-shape.

[0045] Although the main body 8 is formed of a pair of halves 8a, 8a connected to one side 8b via a hinge 8c so as to be freely opened and closed, the main body 8 may be formed of a pair of separated halves 8a, 8a that are not connected via the hinge 8c, and the halves 8a, 8a may be in a state where they are assembled to each other via an assembly part (assembly state), that is, the one side 8b and the other side 8d are in a closed state. In this case, a temporary joining part 8h and a permanent joining part 8i may be provided as the assembly part.

[0046] In addition, the positioning portion for positioning the inner waterproof cover 9 in the main body 8 consists of the inner surface of the main body 8 itself which forms the T-shaped storage space 8e, but if the storage space 8e is I-shaped or the like, it may consist of a recessed portion for engaging with the tip or middle portion of the inner waterproof cover 9.

[0047] In addition, the locking portion 8q for the large diameter corrugated pipe and the locking portion 12a for the small diameter corrugated pipe provided on the main body 8 are positioned offset in the axial direction of the connection port 8f (i.e., the axial direction of the corrugated pipe 3), but may be provided at the same position in the axial direction.

[0048] The water-stopping portion 9a of the inner waterproof cover 9 is formed so that the width in the axial direction of the water-stopping portion 9a is wider than the width 3w (see FIG. 14(a)) of the tip surface of the convex strip portion 3a of the corrugated pipe 3, but the width of the water-stopping portion 9a may be equal to or larger than the interval 3x (see FIG. 14(b)) between the adjacent convex strip portions 3a, 3a, or the pitch 3y (see FIG. 14(c)) between the convex strip portions 3a, 3a, or may be wider than the width 3z spanning (straddling) the adjacent convex strip portions 3a, 3a (see FIG. 14(d)). However, in the illustrated embodiment, the width of the water-stopping portion 9a is wider than the width 3w of the tip surface of the convex strip portion 3a, equal to or larger than the interval 3x between the adjacent convex strip portions 3a, 3a, equal to or larger than the pitch 3y between the convex strip portions 3a, 3a, and wider than the width 3z spanning the adjacent convex strip portions 3a, 3a.

[0049] Furthermore, the clamped portion 9d of the inner waterproof cover 9 is provided with a protrusion 9e that protrudes from its tip toward the opposite side to the cut surface 9c, but this protrusion 9e may be omitted. [Explanation of symbols]

[0050] 1 Fixed surface 2 Fluid tube 3 Corrugated tube 3a Convex part 3c Large diameter corrugated pipe 3d small diameter corrugated tube 3w Width of the tip of the convex part 4 Pipe joints 5 Pipe joint cover 6. Pipe joint housing device 7 Pipe joint housing structure 8. Main Unit 8a half body 8b One side 8c Hinge part 8d Other side 8e Containment Space 8f Connection port 8g locking part 8h Temporary joint 8i main joint 8j Positioning recess 8k flat surface 8n Large diameter connection port 8p small diameter connection port 8q Large diameter corrugated pipe locking part 9 Inner waterproof cover 9a Water stop part 9b Storage section 9c section 9d Clamped part 9g Large diameter water stopper 9h Small diameter water stop section 10 Screw member 12 Adapters 12a Locking part for small diameter corrugated pipe

Claims

1. A pipe joint cover for accommodating a pipe joint to which a fluid pipe is connected, It has a main body and an inner waterproof cover, The main body is composed of a pair of halves divided on either side in a direction perpendicular to a flow path direction of the pipe joint, and the halves have an internal storage space when assembled together, and the pipe joint is stored in the storage space. The main body has a connection port to which an end of a corrugated tube that houses and protects the fluid tube is connected, The connection port is provided with a locking portion that fits between the protruding portions arranged at intervals on the outer circumferential surface of the corrugated pipe to prevent the corrugated pipe from slipping out of the connection port, The inner waterproof cover is disposed in the housing space together with the pipe joint in a state where the inner waterproof cover covers the pipe joint, The inner waterproof cover is provided with a water stopper portion that surrounds the tip side of the corrugated tube from the position where the locking portion is locked and abuts on the entire circumference of the corrugated tube, The pipe joint cover, wherein the water-stopping portion is formed so that the axial width of the water-stopping portion is wider than the width of the tip surface of the convex strip portion.

2. 2. The pipe joint cover according to claim 1, wherein a positioning portion is formed on an inner surface of the main body for positioning the inner waterproof cover in a state where the inner waterproof cover covers the pipe joint.

3. The pair of halves are connected to each other so as to be freely opened and closed by a hinge portion provided on one side of the pair of halves, and have the storage space therein when the other side opposite to the one side is closed, the inner waterproof cover has an accommodating portion for accommodating the pipe joint, a split surface split along the other side portion of the pair of halves so as to lead to the accommodating portion from the outside, and a clamped portion located on both sides of the split surface and protruding outward, The pipe joint cover according to claim 2 , wherein the clamped portion is clamped by the pair of halves when the other side portion of the pair of halves is closed.

4. The pipe joint cover of claim 3, wherein the pair of halves includes a temporary connection portion that engages with the other side portion by closing it to prevent the other side portion from opening, and a permanent connection portion that maintains the other side portion in a closed state by screwing a screw member.

5. 5. The pipe joint cover according to claim 1, wherein an inner surface of at least one of the pair of halves is provided with a positioning recess for positioning a tip of a fastener for fixing the main body to a fixing surface.

6. 6. The pipe joint cover according to claim 5, wherein the half provided with the positioning recess has a flat surface on an outer surface of the half that abuts against the fixing surface.

7. The connection port is provided on the main body itself as a large-diameter connection port to which a large-diameter corrugated tube having a relatively large diameter is connected so that the connection port can selectively connect corrugated tubes of different diameters, and the small-diameter connection port to which a small-diameter corrugated tube having a relatively small diameter is connected is formed by the large-diameter connection port and an adapter attached to the large-diameter connection port, and the large-diameter connection port has a large-diameter corrugated pipe locking portion as the locking portion that locks onto the large-diameter corrugated tube, and the adapter constituting the small-diameter connection port has a small-diameter corrugated pipe locking portion as the locking portion that locks onto the small-diameter corrugated tube, 2. The pipe joint cover according to claim 1, wherein the inner waterproof cover has a large diameter water-stopping portion as the water-stopping portion that abuts against the large diameter corrugated pipe and a small diameter water-stopping portion as the water-stopping portion that abuts against the small diameter corrugated pipe, the small diameter water-stopping portion being arranged side by side with the small diameter water-stopping portion being at the tip side of the inner waterproof cover, and the small diameter water-stopping portion is arranged to be removable, so that the small diameter water-stopping portion is removed for the large diameter corrugated pipe and is used without being removed for the small diameter corrugated pipe.

8. A pipe joint receiving device comprising a pipe joint to which a fluid pipe is connected and a pipe joint cover for receiving the pipe joint, The pipe joint cover includes a main body and an inner waterproof cover, the main body is composed of a pair of halves divided into two on either side in a direction perpendicular to the flow path direction of the pipe joint, the halves being connected to each other so as to be freely opened and closed by a hinge portion provided on one side, and when the other side opposite to the one side is closed, an accommodation space is formed therein, and the pipe joint is accommodated in the accommodation space; The main body has a connection port to which an end of a corrugated tube that houses and protects the fluid tube is connected, The connection port is provided with a locking portion that fits between the protruding portions arranged at intervals on the outer circumferential surface of the corrugated pipe to prevent the corrugated pipe from slipping out of the connection port, When the pipe joint is disposed in the accommodation space, two or more of the convex rib portions can be disposed between the pipe joint and the locking portion, The inner waterproof cover is disposed in the housing space together with the pipe joint in a state where the inner waterproof cover covers the pipe joint, The inner waterproof cover is provided with a water-stopping portion that surrounds the tip side of the corrugated pipe beyond the position where the engaging portion engages, and abuts the corrugated pipe over the entire circumference.

9. A fluid pipe housed and protected in a corrugated pipe is connected to a pipe joint; A pipe joint cover including a main body and an inner waterproof cover, the inner waterproof cover being disposed in an internal storage space of the main body together with the pipe joint in a state where the inner waterproof cover covers the pipe joint, The main body has a connection port, and a locking portion provided at the connection port is inserted between the protruding portions arranged at intervals on the outer circumferential surface of the corrugated tube, so that the corrugated tube is connected to the connection port in a state in which it is prevented from slipping out. A pipe fitting accommodating structure in which two or more of the convex rib portions are arranged between the pipe fitting and the engaging portion, and a water-stopping portion provided on the inner waterproof cover abuts against at least one of the two or more convex rib portions over its entire circumference.

10. The pipe joint accommodating structure according to claim 9 , wherein the water stop portion abuts against two or more of the protruding portions over an entire periphery between the pipe joint and the locking portion.

11. the main body is composed of a pair of halves divided into two on either side in a direction perpendicular to a flow path direction in the pipe joint, the halves being connected to each other so as to be freely opened and closed by a hinge portion provided on one side, and having the storage space therein when the other side opposite to the one side is closed, The pipe joint accommodating structure according to claim 9 or 10, wherein the main body is fixed to a standing fixing surface with the other side portion facing downward.

12. The pipe joint accommodating structure according to claim 11 , wherein one of the pair of halves of the main body abuts against the fixing surface, and the portion of the one half that abuts against the fixing surface is a flat surface.

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