JP2010203555A - Pipe joint protective cover and pipe joint protection structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To protect a cover body housing a pipe joint from being damaged by input of a load. <P>SOLUTION: In the pipe joint protection structure 10, a central bellows 21A, a first bellows 24A and a second bellows 28A are provided in the cover body 22 of a pipe joint protective cover 12 housing the pipe joint 14. In such the case where a load not probable to occur above the ground is input relative to the cover body 22 buried in the ground, each bellows is deformed to make the cover body 22 flex. Thereby, an excessive load is prevented from being applied to the cover body 22, so that the cover body 22 is prevented from being damaged. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a pipe joint protective cover for protecting a pipe joint for connecting a plurality of pipes, and a pipe joint protection structure using the pipe joint protective cover.

  Normally, when pulling water pipes into houses, etc., flexible pipes (for example, polybden pipes) that are installed in the ground with hard pipes (for example, PVC pipes) buried in the soil and routed indoors Etc.) and pipe joints. However, depending on the situation, it is necessary to connect the PVC pipe and the polybden pipe in the soil. In this case, since the pipe joint is buried in the soil, the pipe joint may be deteriorated due to moisture or oil in the soil, and water may leak from the pipe joint portion. In addition, the pipe joint may be damaged when dug from the soil. For this reason, the protection structure of the pipe joint which protects a pipe joint with a protective cover (cover body) is devised (for example, refer to patent documents 1).

JP 2006-162037 A

  By the way, there is a case where a load that is impossible on the ground is input to a pipe embedded in the soil, and such a load is also input to the cover body. Therefore, depending on how the load is applied, the cover body may not endure and may be damaged. In particular, when a flexible polybden tube is connected to the pipe joint inside the cover body, the cover body may be damaged at the connection point between the cover body and the polybden tube suddenly softening from the hard part. Is expensive.

  In view of the above facts, the present invention has an object to obtain a pipe joint protective cover that can prevent a cover body that houses a pipe joint from being damaged by an input of a load, and a pipe joint protective structure using the pipe joint protective cover. And

  A pipe joint protective cover according to the invention of claim 1 is provided with a cover body that can accommodate therein a pipe joint for connecting a plurality of pipes, and a plurality of pipe joints that can be inserted into the cover body. A pipe insertion part, a water stop member provided in the pipe insertion part, tightly contacting an outer peripheral surface of the inserted pipe and sealing between the pipe and the pipe insertion part, and provided in the cover body; And a deforming portion that bends the cover body by being deformed by a load input to the cover body.

  In the pipe joint protective cover according to the first aspect, the pipe joint is housed inside the cover body, and the pipe inserted into the pipe insertion portion is connected to the pipe joint. In addition, a water stop member is brought into close contact with the outer peripheral surface of the pipe inserted into the pipe insertion portion, thereby sealing between the pipe and the pipe insertion portion.

  Here, in this pipe joint protective cover, when a load is applied to the cover body when the cover body is buried in the soil or when piping is connected, the deformed portion provided on the cover body is deformed. The cover body is bent. Thereby, it can prevent that an excessive load is applied to a cover body, and can prevent damage to a cover body.

  The pipe joint protective cover according to the invention described in claim 2 is the pipe joint protective cover according to claim 1, wherein the deformed portion is formed by forming bellows-like irregularities on both front and back surfaces of the cover body. It is characterized by being a bellows part provided in the cover body.

  In the pipe joint protective cover according to the second aspect, when the cover body receives a load, the bellows portion provided on the cover body is deformed. Thereby, a cover body can be bent flexibly. In addition, since the bellows portion formed by the bellows-like irregularities bends the cover body, the flexibility of the cover body can be ensured even when the cover body is sufficiently thick. Therefore, ensuring of the rigidity of a cover body and ensuring of flexibility can be made compatible.

  A pipe joint protective cover according to a third aspect of the present invention is the pipe joint protective cover according to the first or second aspect, wherein the cover body is constituted by a plurality of divided bodies that are connected in a separable manner. It is characterized by being.

  In the pipe joint protective cover according to the third aspect, the cover body can be divided into a plurality of divided bodies. For this reason, when connecting a some division body mutually and assembling a cover body, a pipe joint can be accommodated inside a cover body. As a result, even a pipe joint having a large size can be accommodated inside the cover body.

  A pipe joint protective cover according to a fourth aspect of the present invention is the pipe joint protective cover according to the third aspect, wherein a water stop means for sealing the connection part is provided at the connection part of the plurality of divided bodies. It is characterized by having.

  In the pipe joint protective cover according to the fourth aspect, the connecting portions of the plurality of divided bodies are sealed by the water stop means. Therefore, liquid (water, oil, etc.) can be prevented from entering the inside of the cover body via the connecting portion.

  The pipe joint protective cover according to the invention described in claim 5 is the pipe joint protective cover according to claim 3 or claim 4, wherein the plurality of divided bodies are a central divided body formed in a tubular shape, and The first divided body connected to one axial end of the central divided body and the second divided body connected to the other axial end of the central divided body, the first divided body and the It is characterized in that the second divided body can be directly connected.

  In the pipe joint protective cover according to claim 5, the cover body has a form in which the first divided body and the second divided body are connected to the central divided body, and the first divided body and the second divided body directly. It may take a connected form (ie, a form in which the central divided body is omitted). Therefore, the form of the cover body can be appropriately selected according to the shape of the pipe joint to be protected. Thereby, it becomes possible to improve workability by omitting the connecting work of the central divided bodies and to reduce the cost by omitting the central divided bodies.

  The pipe joint protection structure according to the invention described in claim 6 is a pipe joint in which a plurality of pipes are connected, and the pipe joint is housed inside the cover body. And a pipe joint protective cover as described above.

  In the pipe joint protection structure according to the sixth aspect, the pipe joint is housed and protected inside the cover body of the pipe joint protective cover. Moreover, when a load is input to the cover body, the deformed portion of the cover body is deformed to bend the cover body. Thereby, it can prevent that an excessive load is applied to a cover body, and can prevent damage to a cover body.

  As described above, in the pipe joint protection cover and the pipe joint protection structure according to the present invention, the cover body that houses the pipe joint can be prevented from being damaged by the input of a load.

It is a perspective view which shows the pipe joint protection structure which concerns on embodiment of this invention. It is a longitudinal cross-sectional view of the pipe joint protection structure shown in FIG. It is sectional drawing which shows the screw structure of the connection part of the pipe joint protective cover of this embodiment. FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. FIG. 5 is a sectional view taken along line 5-5 of FIG. It is a perspective view which shows the state in which the straight type short pipe joint was accommodated in the pipe joint protective cover which concerns on this embodiment. It is a longitudinal cross-sectional view of the pipe joint protection structure shown by FIG. It is a perspective view showing the state where a straight type long pipe joint was stored in the pipe joint protective cover concerning this embodiment. It is a perspective view which shows the state by which the L-shaped pipe joint was accommodated in the pipe joint protective cover which concerns on this embodiment. It is sectional drawing which shows the modification of the connection part of the pipe joint protective cover of this embodiment.

  Hereinafter, embodiments of a pipe joint protection cover according to the present invention and a pipe joint protection structure using the pipe joint protection cover will be described in detail with reference to FIGS. 1 to 9. First, the pipe joint 14 protected using the pipe joint protective cover 12 according to the present embodiment and the pipe connected by the pipe joint 14 will be described in detail. Note that the pipe joint protection structure 10 according to this embodiment includes a pipe joint protective cover 12 and a pipe joint 14.

(Fittings and piping)
1 and 2 show a pipe joint 14 covered and protected by a pipe joint protective cover 12. The pipe joint 14 is a T-shaped joint that connects the pipe P1, the pipe P2, and the pipe P3. In this embodiment, since the pipe P1 is set as a polyvinyl chloride pipe and the pipes P2 and P3 are set as polybutene pipes, the pipe joint 14 is a different diameter pipe joint. This is because the PVC pipe and the polybutene pipe have the same nominal diameter but have different outer diameters and inner diameters. Further, since the pipes P1, P2, and P3 are buried in the soil, they are covered with flexible bellows-like pipe protective covers 16, 18, and 20, respectively.

  In the present embodiment, the pipe P1 is connected to the water pipe, so that it is a hard polyvinyl chloride pipe, and the pipes P2, P3 are drawn into the interior of the building, so that they are flexible polybutene pipes. It is not necessary to be limited to this configuration, and pipes P1, P2, and P3 can be made of a conventionally known material. Further, in this embodiment, the pipe joint 14 is configured to connect a PVC pipe and a polybutene pipe having the same nominal diameter, but the present invention is not limited to this configuration, and pipes of the same type and the same nominal diameter are connected to each other. It is good also as a structure to connect, and it is good also as a structure which connects the piping of the same kind but different nominal diameters. That is, any conventionally known joint may be used as long as a plurality of pipes can be connected.

(Fitting protective cover)
As shown in FIGS. 1 and 2, the pipe joint protective cover 12 includes a cover body 22 configured (formed) by connecting three divided bodies. In this embodiment, the cover body 22 is formed in a substantially egg shape, and is sized so that the pipe joint 14 can be accommodated therein. In the present embodiment, among the three divided bodies constituting the cover body 22, the substantially cylindrical divided body located in the center is connected to the central divided part 24 and the pipe P <b> 1 side of the central divided part 24. A substantially cylindrical divided body connected to the pipe P2 side of the first divided part 26 and the central divided part 24 is referred to as a second divided part 28.

  A central bellows portion 24 </ b> A that constitutes a deformed portion of the cover body 22 is provided at an intermediate portion in the axial direction of the central divided part 24. The central bellows portion 24 </ b> A is formed by providing bellows-like irregularities on both the front and back surfaces of the central divided part 24, and the axially intermediate portion of the central divided part 24 has flexibility. Further, a first bellows portion 26 </ b> A that constitutes a deformed portion of the cover body 22 is provided at an intermediate portion in the axial direction of the first divided part 26. The first bellows portion 26A is formed by providing bellows-like irregularities on both the front and back surfaces of the first split part 26, and the first split part 26 is provided with flexibility at an intermediate portion in the axial direction. Yes. Similarly, a second bellows portion 28 </ b> A that constitutes a deformed portion of the cover body 22 is provided at an intermediate portion in the axial direction of the second divided part 28. The second bellows portion 28A is formed by providing bellows-like irregularities on both the front and back surfaces of the second divided part 28, and the second middle part 28 is provided with flexibility in the middle in the axial direction. Yes.

  These divided parts are connected to each other by screwing a male screw and a female screw. In this embodiment, the male screw 24B is connected to the male screw 24B provided at the end of the central split part 24 on the first split part 26 side in the axial direction, as shown in FIG. The female screw 26B provided at the end of the central divided part 24 in the axial direction of the central part 26 is screwed together, and the female screw 24C provided at the end of the central divided part 24 on the side of the second divided part 28 is A male screw 28B provided at the end of the two-parts 28 in the axial direction on the center part 24 side is screwed together.

  Here, in this embodiment, the male screw 24B of the central divided part 24 and the male screw 28B of the second divided part 28, and the female screw 24C of the central divided part 24 and the female screw 26B of the first divided part 26 have the same shape and size. Is formed. Therefore, the first divided part 26 and the second divided part 28 can be directly connected by screwing the male screw 28B of the second divided part 28 into the female screw 26B of the first divided part 26. It has become. In other embodiments, the first divided part 26 may be formed with a male screw, and the second divided part 28 may be formed with a female screw to connect the divided parts.

  Further, as shown in FIG. 3, a fitting insertion groove 30 is formed at the end of the first division part 26 on the side of the central division part 24, and the fitting insertion groove 30 constitutes a water stop means. An annular O-ring 32 is inserted. The O-ring 32 is in close contact with the end of the center split part 24 on the first split part 26 side in a state where the first split part 26 is connected to the center split part 24 (shown in FIG. 3). Thereby, the connection part of the 1st division | segmentation part 26 and the center division | segmentation part 24 is sealed. Similarly, a fitting insertion groove 34 is formed at an end of the central division part 24 on the second division part 28 side, and an annular O-ring 36 constituting water stopping means is formed in the fitting insertion groove 34. It is inserted. The O-ring 36 is in close contact with the end of the second divided part 28 on the side of the central divided part 24 in a state where the second divided part 28 is connected to the central divided part 24. Thereby, the connection part of the center division | segmentation part 24 and the 2nd division | segmentation part 28 is sealed. In other embodiments, the connecting part of each divided part may be sealed by coating the male screw part or the female screw part of each divided part with a rubber material.

  On the other hand, as shown in FIGS. 1 and 2, the central divided part 24 is formed with a cylindrical pipe insertion portion 24 </ b> D into which the pipe P <b> 3 can be inserted in a direction orthogonal to the axial direction. An annular insertion groove 38 is provided on the inner peripheral surface of the pipe insertion portion 24D, and an annular O-ring 40 serving as a water stop member is inserted into the insertion insertion groove 38. The inner diameter of the O-ring 40 is set to be smaller than the outer diameter of the pipe P3. When the pipe P3 is inserted inside the O-ring 40, the inner peripheral surface of the O-ring 40 is in close contact with the outer peripheral surface of the pipe P3. The space between the pipe insertion portion 24D and the pipe P3 is sealed.

  Also, as shown in FIGS. 1, 2, 4, and 5, a cylindrical pipe insertion in which a pipe P1 can be inserted into the end of the first divided part 26 on the opposite side to the female screw 26B in the axial direction. A portion 26C is provided. An annular insertion groove 42 is provided on the inner peripheral surface of the pipe insertion portion 26 </ b> C, and an annular O-ring 44 as a water stop member is inserted into the insertion groove 42. The inner diameter of the O-ring 44 is set to be smaller than the outer diameter of the pipe P1, and when the pipe P1 passes through the inside of the O-ring 44, the inner peripheral surface of the O-ring 44 comes into close contact with the outer peripheral surface of the pipe P1. The space between the pipe insertion portion 26C and the pipe P1 is sealed.

  Similarly, a cylindrical pipe insertion portion 28C into which the pipe P2 can be inserted is provided at the end of the second divided part 28 opposite to the male screw 28B in the axial direction. An annular insertion groove 46 is provided on the inner peripheral surface of the pipe insertion portion 28 </ b> C, and an annular O-ring 48 as a water stop member is inserted into the insertion insertion groove 46. The inner diameter of the O-ring 48 is set to be smaller than the outer diameter of the pipe P2. When the pipe P2 is inserted inside the O-ring 48, the inner peripheral surface of the O-ring 48 is in close contact with the outer peripheral surface of the pipe P2. The space between the pipe insertion portion 28C and the pipe P2 is sealed.

  In addition, projections 50, 52, and 54 serving as locking portions are provided on the outer peripheral surface of each pipe insertion portion at intervals in the circumferential direction of each pipe insertion portion. As shown in FIG. 2, the protrusion 52 provided in the pipe insertion portion 26 </ b> C is fitted (hooked) into the concave portion inside the bellows-like pipe protection cover 16 of the pipe P <b> 1. Similarly, the protrusion 54 provided in the pipe insertion portion 28C is fitted into the concave portion inside the bellows-like pipe protection cover 18 of the pipe P2, and the protrusion 50 provided in the pipe insertion part 24D is the bellows-like pipe of the pipe P3. The protective cover 20 is fitted in a concave portion inside.

(Construction procedure)
Next, a construction procedure when the pipe joint 14 is covered and protected using the pipe joint protective cover 12 will be described. First, the cover body 22 is divided (disassembled) into divided parts. Next, the pipe P3 buried in the soil or before being buried in the soil is inserted into the pipe insertion portion 24D of the central divided part 24. Thereby, the inner peripheral surface of the O-ring 40 is in close contact with the outer peripheral surface of the pipe P3, and the space between the pipe insertion portion 24D and the pipe P3 is sealed. Thereafter, the pipe joint 14 is inserted inside the central divided part 24, and the pipe P <b> 3 is connected to the pipe joint 14.
Next, the pipe P <b> 1 embedded in the soil is inserted into the pipe insertion portion 26 </ b> C of the first divided part 26. Thereby, the inner peripheral surface of the O-ring 44 is brought into close contact with the outer peripheral surface of the pipe P1, and the space between the pipe insertion portion 26C and the pipe P1 is sealed. Thereafter, the pipe P1 is connected to the pipe joint 14, and the female screw 26B of the first divided part 26 is screwed into the male screw 24B of the central divided part 24 to connect these divided parts.

  Next, the pipe P <b> 2 embedded in the soil or before being embedded in the soil is inserted into the pipe insertion portion 28 </ b> C of the second divided part 28. As a result, the inner peripheral surface of the O-ring 48 is in close contact with the outer peripheral surface of the pipe P2, and the space between the pipe insertion portion 28C and the pipe P2 is sealed. Thereafter, the pipe P2 is connected to the pipe joint 14, the male screw 28B of the second divided part 28 is screwed into the female screw 24C of the central divided part 24, and these divided parts are coupled. Thereby, the pipe joint 14 is accommodated in the cover body 22.

  Next, the pipe insertion portions 26C, 28C, and 24D of the cover body 22 are inserted inside the pipe protection covers 16, 18, and 20 that cover the pipes P1, P2, and P3, respectively. As a result, the protrusions 52, 54, 50 are fitted (hooked) into the recesses inside the pipe protection covers 16, 18, 20, and the pipe protection covers 16, 18, 20, are connected to the cover body 22 (FIGS. 1 and FIG. 1). 2 illustrated state).

  In this state, since the pipe joint 14 is accommodated and protected inside the cover body 22, the pipe joint 14 is prevented from being damaged by an impact such as when dug up. Further, a part of each of the pipes P 1, P 2, P 3 accommodated in the cover body 22 is also protected by the cover body 22.

  Here, in the present embodiment, when a load that is impossible on the ground is input to the cover body 22 embedded in the soil, or when the pipes P1, P2, P3 are connected to the pipe joint 14, etc. When an excessive bending load is input to the cover body 22, the central bellows portion 24A, the first bellows portion 26A, and the second bellows portion 28A provided on the cover body 22 (each divided part) are deformed to cover the cover body 22. The body 22 is bent (the cover body 22 is deformed flexibly). Thereby, it is prevented that an excessive load is applied to the cover body 22, and damage to the cover body 22 is prevented. In addition, since the load on the pipe joint 14 and the pipes P1, P2, and P3 is reduced due to the deformation of the cover body 22, damage to the pipe joint 14 and the pipes P1, P2, and P3 is also prevented.

  In addition, in the present embodiment, the cover body 22 is bent by the central bellows portion 24A, the first bellows portion 26A, and the second bellows portion 28A formed in a bellows shape. Even when sufficiently secured, the cover body 22 can be bent. Therefore, it is possible to ensure the flexibility of the cover body 22 while ensuring the rigidity of the cover body 22 against an impact such as when dug up, and to achieve conflicting performances.

  Further, in the present embodiment, the O-rings 40, 44, and 48 connect between the pipe P3 and the pipe insertion part 24D, between the pipe P1 and the pipe insertion part 26C, and between the pipe P2 and the pipe insertion part 28C. Since it is sealed, liquid (water, oil, etc.) contained in the soil is prevented from entering the inside of the cover body 22 through the pipe insertion portions 24D, 26C, and 28C. Furthermore, since the connecting part between the central divided part 24 and the first divided part 26 and the connecting part between the central divided part 24 and the second divided part 28 are sealed by the O-rings 32 and 36, these connecting parts are The liquid (water, oil, etc.) can be prevented from entering the cover body 22 through the cover. Therefore, deterioration of the pipe joint 14 due to the intrusion of liquid can be prevented, and water leakage from the pipe joint 14 due to the deterioration can be prevented.

  In the present embodiment, the cover body 22 can be divided into a central divided part 24, a first divided part 26, and a second divided part 28. For this reason, when these divided bodies are connected to each other and the cover body 22 is assembled, the pipe joint 14 can be accommodated inside the cover body 22. Therefore, even a pipe joint having a large size can be easily accommodated in the cover body 22, and the assembly work and piping work of the cover body 22 can be facilitated. Further, since the divided parts are connected by screwing the male screw and the female screw, the assembly work of the cover body 22 can be facilitated also by this.

  Furthermore, in the present embodiment, the male screw 28B of the second divided part 28 can be screwed into the female screw 26B of the first divided part 26, whereby the first divided part 26 and the second divided part 28 are directly connected. Can be linked. Therefore, as shown in FIGS. 6 and 7, when the straight type pipe joint 60 is used, the central divided part 24 is omitted, and the pipe joint 60 is formed by only the first divided part 26 and the second divided part 28. Can be protected. As a result, the cost can be reduced by omitting the central divided part 24, and unnecessary work for connecting the central divided part 24 to other divided parts can be omitted, thereby improving workability. . Further, in this case, since the first split part 26 and the second split part 28 can be bent by the first bellows part 26A and the second bellows part 28A, these split parts are prevented from being damaged by the input of a load. it can. Further, the omission of the central divided part 24 shortens the axial dimension of the cover body 22 (here, only the first divided part 26 and the second divided part 28) (see FIGS. 1 and 6), so that piping is performed. It is possible to prevent the cover body 22 from being damaged by a load at the time of embedding or embedding. Furthermore, in this case, since the connecting portion between the first divided part 26 and the second divided part 28 is sealed by the O-ring 32 (see FIG. 3) provided in the first divided part 26, the connecting portion is interposed. It is possible to prevent liquid (water, oil, etc.) from entering the first divided part 26 and the second divided part 28.

  As shown in FIG. 8, when the straight-type pipe joint 62 is long, the pipe joint 62 can be protected by using the central divided part 24 as well. In this case, since the pipe insertion portion 24D of the central divided part 24 is not necessary, the pipe insertion portion 24D is closed by the cap 64 as shown in FIG. The cap 64 is made of elastically deformable rubber and is set to a size such that the outer peripheral surface of the portion inserted into the pipe insertion portion 24D is in close contact with the inner peripheral surface of the pipe insertion portion 24D. In addition, as another structure of the cap 64, an O-ring is provided at a portion to be inserted into the pipe insertion portion 24D, and the outer peripheral surface of the O-ring and the inner peripheral surface of the pipe insertion portion 24D are brought into close contact with each other. It may be configured to be closed, and a male screw or a female screw is formed in a portion inserted into the pipe insertion portion 24D, a female screw or a male screw is formed on the inner peripheral surface of the pipe insertion portion 24D, and these are screwed together to form the pipe insertion portion 24D. It may be configured to block the Moreover, it is good also as a structure which makes cap 64 the cylindrical body, close | closes the outer peripheral surface to O-ring 40, and obstruct | occludes pipe insertion part 24D. Even in this case, it is possible to prevent the liquid from entering the cover body 22.

  Further, as shown in FIG. 9, when an L-shaped pipe joint 66 (for example, a joint that can connect one pipe P1 and one pipe P2) is protected by the cover body 12, a pipe insertion portion 28C is closed with a cap 64, the pipe P3 is inserted into the pipe insertion portion 24D and connected to the pipe joint 66, and the pipe P1 is inserted into the pipe insertion section 26C and connected to the pipe joint 66, so that the L-shaped The pipes P <b> 1 and P <b> 3 can be connected via the pipe joint 66. Even in this configuration, it is possible to prevent liquid from entering the cover body 22. The cap 64 may be attached at any timing before, during, and after the cover body 22 is assembled.

  Thus, since the pipe joint protective cover 12 according to the present embodiment can cope with various kinds of pipe joints (straight type, L type, T type), it is optimal and wasteless with a small assortment in the field. Construction can be performed. Moreover, even if the shape of the pipe joint is suddenly changed at the site, it becomes possible to respond immediately, which can lead to a shortened construction period.

  In the above embodiment, the case where the deformed portion of the cover body 22 is configured by the central bellows portion 24A, the first bellows portion 26A, and the second bellows portion 28A has been described, but the present invention is not limited thereto, The deformation part of the cover body 22 should just be a thing which can bend the cover body 22 when a load is input into the cover body 22, and the structure can be changed suitably. For example, a configuration in which a flexible part formed of a flexible material (for example, an elastic material such as rubber) is provided in a part of each of the central divided part 24, the first divided part 26, and the second divided part 28. It may be. However, in this case, it is preferable to provide a cover for protecting the flexible part in each divided part.

  Moreover, in the said embodiment, although it was set as the structure by which each division | segmentation part is connected by the screwing of a male screw and a female screw, this invention is not restricted to this, The connection structure of each division | segmentation part can be changed suitably. For example, as shown in FIG. 10, a fitting-type connection structure may be used. In the configuration shown in FIG. 10, a convex portion 24 </ b> E that protrudes outward in the radial direction of the central divided part 24 is provided at the end of the central divided part 24 on the first divided part 26 side, instead of the male screw 24 </ b> B according to the above embodiment. Is provided. Moreover, the recessed part 26D which the said convex part 24E fits instead of the internal thread 26B which concerns on the said embodiment is provided in the edge part by the side of the center divided part 24 of the 1st divided part 26, and the convex part 24E and a recessed part are provided. The center divided part 24 and the first divided part 26 are connected by fitting with 26D. Even in this configuration, the connecting portion between the central divided part 24 and the first divided part 26 is sealed by the O-ring 32, so that liquid can be prevented from entering the cover body 22 via the connecting portion. Can do. Although not shown, the same connection structure can be adopted for the connection part between the central divided part 24 and the second divided part 28.

  Further, in the above embodiment, the cover body 22 is configured by connecting three divided parts, but the present invention is not limited to this configuration, and a plurality of divided parts corresponding to the central divided part 24 are used. It shall be good. In this case, the pipe joint protection structure of the present invention can also be applied to pipe joints (for example, pipe headers) that branch into a plurality of branches.

  Moreover, in the said embodiment, although between the pipe joint 14 and the pipe joint protective cover 12 was made hollow, this invention does not need to be limited to this structure, Between a pipe joint and the pipe joint protective cover 12 An impact absorbing material (for example, a cushioning material such as a rubber piece or sponge) that absorbs the impact may be disposed (accommodated). In this case, even if an impact at the time of digging is applied to the pipe joint protective cover 12, the shock absorber absorbs the shock, so that the pipe joint 14 and the pipes P1, P2, and P3 in the pipe joint protective cover 12 are It is prevented from being damaged.

  Moreover, in the said embodiment, you may comprise the cover body 22 with a transparent or semi-transparent resin material. Note that the transparency (light transmittance) of the cover body 22 at this time is desirably at a level at which the pipe joint 14 and the pipes P1, P2, and P3 can be visually recognized through the cover body 22. When a transparent or translucent resin material is used for the cover body 22, since the state of the pipe joint 14 and the connection state between the pipe joint 14 and the pipes P1, P2, and P3 can be visually confirmed, the maintainability is improved. improves.

  The present invention has been described with reference to the embodiments. However, these embodiments are merely examples, and various modifications can be made without departing from the scope of the invention. It goes without saying that the scope of rights of the present invention is not limited to these embodiments.

10 pipe joint protection structure 12 pipe joint protective cover 14 pipe joint 22 cover body 24 center split part (center split body)
24A Central bellows (bellows)
24D Pipe insertion part 26 1st division parts (1st division body)
26A 1st bellows part (bellows part)
26C Pipe insertion part 28 2nd division part (2nd division body)
28A 2nd bellows part (bellows part)
28C Piping insertion part 32, 36 O-ring (water stop means)
40, 44, 48 O-ring (water-stop member)

Claims (6)

A cover body that can accommodate therein a pipe joint for connecting a plurality of pipes;
A plurality of pipe insertion portions provided on the cover body and capable of inserting the pipe;
A water stop member that is provided in the pipe insertion portion and seals between the pipe and the pipe insertion portion in close contact with the outer peripheral surface of the inserted pipe;
A deforming portion that is provided on the cover body and deflects the cover body by being deformed by a load input to the cover body;
Pipe joint protective cover with.   2. The pipe joint protective cover according to claim 1, wherein the deformable portion is a bellows portion provided in the cover body by forming bellows-like irregularities on both front and back surfaces of the cover body. .   The pipe joint protective cover according to claim 1 or 2, wherein the cover body is constituted by a plurality of divided bodies that are connected so as to be divided.   The pipe joint protective cover according to claim 3, wherein a water stop means for sealing the connection part is provided at the connection part of the plurality of divided bodies.   The plurality of divided bodies are connected to a central divided body formed in a cylindrical shape, a first divided body connected to one axial end of the central divided body, and the other axial end of the central divided body. The pipe according to claim 3 or 4, wherein the first divided body and the second divided body are directly connectable to each other. Fitting protective cover. A pipe joint in which a plurality of pipes are connected;
The pipe joint protective cover according to any one of claims 1 to 5, wherein the pipe joint is housed inside the cover body.
With pipe joint protection structure.

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