JP6849369B2 - Sound insulation covers and fittings for fittings - Google Patents

Description

The present invention relates to a sound insulation cover for a joint and a joint provided with the sound insulation cover.

In recent years, in multi-story buildings such as apartment houses, drainage discharged from sanitary equipment on each floor is collected from sanitary equipment on each floor in a drainage vertical pipeline provided in a pipe shaft via a horizontal branch pipe. It is designed to be drained to the sewage channel via curved and horizontal pipelines. In the drainage system for draining the drainage discharged from the sanitary equipment on each floor to the sewer (hereinafter, simply referred to as the drainage system), in order to connect the vertical pipes constituting the drainage vertical pipeline and the lateral branch pipes. In addition, a collective joint (joint) having a main pipe to which the main pipe can be connected to each of the upper end portion and the lower end portion and a branch pipe connected to the side surface of the main pipe and to which a lateral branch pipe can be connected is used. There is.

Inside the collective joint used for the drainage system, the fluid such as water flowing down in the vertical pipe above and the fluid flowing down in the lateral branch pipe merge, so the noise emitted from the drainage pipe joint becomes louder. Is required to have some kind of sound insulation structure.

For example, Patent Document 1 discloses a drainage pipe joint including a joint body for connecting the drainage pipe and a soundproof cover (sound insulation cover) for covering the outer surface of the joint body. The soundproof cover of this drainage pipe joint is mainly composed of a soundproof layer made of porous rubber, and is formed in a three-dimensional shape along the joint body corresponding to the outer shape of the joint body. It is in close contact.

Further, Patent Document 2 discloses a flexible sound insulation cover for a collecting pipe, which is arranged in a state of covering the peripheral wall of the pipe with respect to the collecting pipe having a branch pipe connecting port on the peripheral wall of the pipe. .. In the sound insulation cover for the collecting pipe, the branch pipe connection port or the insertion part where the branch pipe connected to the branch pipe connection port can be arranged in the inserted state or the substantially inserted state is cut by the cutting operation. A cutting position indicating mark for forming an insertion portion for appearing is provided. The cutting position indicating mark is configured so that a plurality of types of insertion portions having different external dimensions can be revealed by a cutting operation, and is composed of a plurality of types of annular or substantially annular cutting position indicating lines having different external dimensions. (See Fig. 2). Further, a plurality of the cutting position indicating lines are provided in a one-sided state in which they are connected to the same or substantially the same location of the cutting position indicating line having the largest external dimension.

Japanese Unexamined Patent Publication No. 2016-50444 Japanese Patent No. 5459830

However, when the soundproof cover described in Patent Document 1 is used, if the soundproof cover is wound around the joint body and brought into close contact with each other by utilizing the elasticity of the soundproof cover, sound leakage from the gap between the soundproof covers can be prevented, but the soundproof cover and the soundproof cover There is a problem that it becomes difficult to provide an air layer between the joint body and the joint body. If the air layer is not provided, the function of the soundproof cover (sound insulation performance) will not be fully exhibited.

On the other hand, when the sound insulation cover for the collecting pipe described in Patent Document 2 is used, it becomes difficult for the sound insulating cover for the collecting pipe and the peripheral wall portion of the pipe to come into close contact with each other by using a material that is difficult to stretch for the sound insulating cover for the collecting pipe. An air layer is likely to be formed between them. However, when the portion facing the branch pipe connection port is cut, a gap is likely to occur between the pipe peripheral wall portion, which is the root of the cutting position, and the branch pipe connection port, and sound leaks from the gap at the cutting position. In addition to being unable to prevent this, there is a problem that it takes time and effort for construction such as the need for cutting operation.

The present invention has been made in view of the above circumstances, and can be applied to a collective joint (joint) having a main pipe and a branch pipe connected to a side surface of the main pipe, and covers the joint. For joints, at least an air layer can be easily formed between the main pipe and the main pipe, and the joint can be easily constructed without creating a gap between the main pipe and the base end of the branch pipe. A sound insulation cover and a joint provided with the sound insulation cover are provided.

The sound insulation cover for a joint according to the present invention is a sound insulation cover for a joint that covers a joint having a main pipe and a branch pipe connected to a side surface of the main pipe, and has a main pipe cover portion that covers the main pipe. A branch pipe cover portion that covers at least the base end portion of the branch pipe and is integrally provided with the main pipe cover portion is provided, and the main pipe cover portion and the branch pipe cover portion are the main pipe and the branch pipe cover portion. It is characterized in that it is made of a flexible material that is three-dimensionally formed in a shape along the outer surface at a predetermined distance from the outer surface of the branch pipe.

According to the above configuration, the base end portions of the main pipe and the branch pipe are covered with the main pipe cover portion and the branch pipe cover portion without gaps at predetermined intervals from the outer surfaces of the main pipes and the branch pipes, and no prior preparatory work is required. .. Therefore, when covering the joint, an air layer is easily formed between the sound insulation cover and at least the main pipe, the sound insulation performance is sufficiently exhibited, and the space between the main pipe and the base end of the branch pipe is exhibited. It can be easily installed without creating a gap on the surface of the sound insulation cover. Further, since the material has flexibility, it becomes easy to handle the sound insulation cover for the joint when covering the joint.

In the sound insulation cover for the joint described above, a cut may be formed along the vertical direction from the upper end directly above the branch pipe cover portion to the branch pipe cover portion.
Further, in the above-mentioned sound insulation cover for a joint, from a portion arranged so as to face the lower end of the connecting portion between the main pipe cover portion and the branch pipe cover portion from the upper end shifted in the left-right direction from directly above the branch pipe cover portion. A cut may be formed along the vertical direction up to the top.

According to the above configuration, since the cut is formed, when the joint is covered with the sound insulation cover, the flexibility of the material constituting the sound insulation cover is utilized, and the portion of the sound insulation cover that is arranged to face the branch pipe. The posture can be adjusted and work efficiency is improved. Further, when the joint is applied to a drainage system of a building, the portion below the lower end of the connecting portion between the main cover portion and the branch pipe cover portion of the joint is buried in the mortar. Therefore, since the cut is not formed in this portion, the moisture from the surrounding structure such as mortar does not infiltrate into the joint through the cut. Therefore, the joint and the sound insulation cover are less likely to deteriorate, and the sound insulation performance is more highly exhibited.

The sound insulation cover for the above-mentioned joint includes a first cover portion that covers the base end portion of the main pipe and the branch pipe, and a second cover portion that covers the tip end side of the base end portion of the branch pipe. You may.

According to the above configuration, the three-dimensional shape of the first cover portion that covers only the base end portion of the main pipe and the branch pipe is compared with the amount of protrusion of the three-dimensional shape of the single sound insulation cover that covers the entire main pipe and the branch pipe. The amount of protrusion of the shape becomes small. As a result, when the joint is covered with the sound insulation cover, the ease of positioning the sound insulation cover with respect to the joint is increased, and the handling becomes easier. Further, when the flexible material is molded by press molding, vacuum forming, pneumatic molding, or the like when manufacturing the first cover portion, the molding amount is suppressed and the first cover portion can be easily manufactured.

In the sound insulation cover for the above-mentioned joint, another pipe member is fitted in the lower part of the main pipe, a predetermined distance is provided from the outer surface of the pipe member, and the pipe member is formed along the outer surface of the pipe member. At least a third cover portion covering the lower portion may be further provided.

For example, when a joint is applied to a drainage system of a building, a pipe member different from the main pipe is placed under the joint depending on the thickness of the floor slab of the building and the installation environment of the joint. Is fitted.
According to the above configuration, the fitting and the pipe member are connected by covering the pipe member fitted to the lower part of the main pipe with the third cover portion as in the case where the joint is applied to the drainage system. Sound insulation performance of the joint structure can be obtained.

In the sound insulation cover for the joint described above, it is preferable that the upper end portion of the third cover portion is connected to the lower end portion of the main cover portion.

According to the above configuration, the entire vertical direction of the joint structure composed of the joint and the pipe member is covered with the sound insulation cover without any gap, so that the sound insulation performance of the joint structure is improved.

The joint according to the present invention is characterized by including the sound insulation cover for the above-mentioned joint.
In the above-mentioned joint, it is preferable that three or more of the branch pipes are connected to the side surface of the main pipe.

According to such a joint, when covered with the sound insulation cover, an air layer is easily formed between the sound insulation cover and at least the main pipe, the sound insulation performance is sufficiently exhibited, and the main pipe and the branch pipe are exhibited. It can be easily installed without creating a gap between the base end portion and the base end portion.
In particular, when the above-mentioned sound insulation cover is applied to a joint in which three or more branch pipes are connected to the side surface of the main pipe, the shape of the joint becomes complicated, so that the joint is covered with a conventional sound insulation cover as compared with the case where the joint is covered with a conventional sound insulation cover. Therefore, the above-mentioned action and effect are enhanced.

According to the sound insulation cover for a joint according to the present invention, it can be applied to a joint such as a collective joint, and when the joint is covered with the sound insulation cover, at least an air layer can be easily formed between the pipe and the main pipe. It can be easily installed without creating a gap between the main pipe and the base end of the branch pipe. Further, according to the joint according to the present invention, by providing the sound insulation cover for the above-mentioned joint, the same function and effect as the above-mentioned sound insulation cover for the joint can be obtained.

It is sectional drawing for demonstrating the use example for the joint and the joint to which this invention is applied. It is a side view of the joint to which this invention is applied. Among the sound insulation covers for joints of the first embodiment to which the present invention is applied, it is a view of the sound insulation cover covering the collective joint of the joint structure, and is the perspective view which shows the expanded state. It is sectional drawing of the sound insulation cover for a joint of 1st Embodiment to which this invention was applied, and is sectional drawing which was viewed by the line X1-X1 shown in FIG. It is a top view of the joint covered with the sound insulation cover for the joint of the first embodiment to which this invention is applied. Among the sound insulation covers for joints of the first embodiment to which the present invention is applied, it is a view of the sound insulation cover covering the tapered pipe of the joint structure, and is the perspective view which shows the expanded state. Among the sound insulation covers for joints of the second embodiment to which the present invention is applied, it is a view of the sound insulation cover covering the collective joint of the joint structure, and is the perspective view which shows the expanded state. Among the sound insulation covers for joints of the second embodiment to which the present invention is applied, it is a view of a modification of the sound insulation cover covering the collective joint of the joint structure, and is the perspective view which shows the expanded state. Of the sound insulation covers for joints of the third embodiment to which the present invention is applied, it is a view of the sound insulation cover covering the collective joint of the joint structure, and is a perspective view showing the unfolded state, and (a) is the first cover. It is a figure of a part, and (b) is a figure of a second cover part.

Hereinafter, a sound insulation cover for a joint to which the present invention is applied and an embodiment of the joint will be described with reference to the drawings. The drawings used in the following description are schematic, and the length, width, thickness ratio, etc. are not always the same as the actual ones and can be changed as appropriate.

(First Embodiment)
As shown in FIG. 1, the sound insulation cover (hereinafter, simply referred to as a sound insulation cover) 10 for a joint of the first embodiment is a sound insulation cover that covers the collective joint (joint) 1.

As shown in FIG. 2, the collective joint 1 has a main pipe 2 extending in the vertical direction and three branch pipes 3 connected to the side surface 2r of the main pipe 2. Of the three branch pipes 3, the axes J3A and J3C of the two branch pipes 3A and 3C are arranged on the same line along the left-right direction (that is, the lateral direction), and are mutually aligned with the axis J2 of the main pipe 2. It is orthogonal. Further, of the three branch pipes 3, the axis J3B of the other branch pipe 3B is orthogonal to each of the axes J2, J3A, and J3C. In the following, the branch pipes 3A, 3B, and 3C will be described as the branch pipe 3 when it is not necessary to distinguish them, and this description will be used for the related components.

A tubular short pipe (another pipe member) 5 is internally fitted in the lower portion of the main pipe 2 of the collective joint 1, and a tapered pipe 6 is externally fitted in the lower portion of the short pipe 5. That is, the joint structure 8 is composed of the collective joint 1, the short pipe 5, and the tapered pipe 6.

As shown in FIG. 1, the joint structure 8 is used for a drainage system of a building (not shown) having multiple floors such as a condominium. Specifically, the joint structure 8 constitutes a horizontal branch pipe 7 for flowing down the drainage discharged from sanitary equipment and the like on each floor and a drainage vertical pipe line in the pipe shaft, and the horizontal branch pipe 7 flows down. It is used to connect a standing pipe 9 that allows drainage to flow further down to the bottom of the drainage system.

The lower part of the standing pipe 9 (for example, the standing pipe 9A) is fitted to the upper part of the main pipe 2 of the collective joint 1, and the upper part of another standing pipe 9 (for example, the standing pipe 9B) is fitted to the lower part of the tapered pipe 6. It is fitted. The tapered pipe 6 is formed so as to reduce its diameter as it advances downward. The inner diameter and outer diameter of the upper end portion of the tapered pipe 6 are appropriately set in consideration of the outer diameter of the short pipe 5 and the like. Further, the inner diameter and the outer diameter of the lower end portion of the tapered pipe 6 are appropriately set in consideration of the outer diameter of the standing pipe 9.
The downstream ends of the lateral branch pipes 7A, 7B, and 7C are fitted to each of the branch pipes 3A, 3B, and 3C of the collective joint 1.

The joint structure 8 is inserted through a through hole H formed in a concrete floor slab S interposed between adjacent floors in the vertical direction. A mortar M is filled between the side wall of the through hole H and the joint structure 8. In particular, the collective joint 1 and the sound insulation cover 10 below the lower end of the branch pipe 3, and the upper portions of the short pipe 5 and the tapered pipe 6 are arranged in a state of being embedded in the mortar M.

As shown in FIG. 3, the sound insulation cover 10 of the first embodiment is composed of a sound insulation cover 10A that integrally covers the main pipe 2 and the branch pipe 3. The sound insulation cover 10A is three-dimensionally formed along the outer surfaces 2p and 3p so as to cover the outer surfaces 2p and 3p of the main pipe 2 and the branch pipe 3 with a predetermined interval f (FIG.). 5). That is, the sound insulation cover 10A is a so-called single sheet-like material formed three-dimensionally as described above, and is a main cover portion that covers the main 2 by being arranged to face the main 2. The branch pipe cover portion 13 that covers the branch pipe 3 by being arranged to face the branch pipe 3 is integrally connected to the 12 and the branch pipe cover portion 13. The branch pipe cover portion 13 includes at least the branch pipe base end cover portion 13j that covers the base end portion 3j of the branch pipe 3.

As the sound insulation cover 10A, for example, a flexible thermoplastic resin such as a polyvinyl chloride resin, a polyester resin, or a polypropylene resin, a thermosetting resin such as a synthetic rubber resin, or the like is suitable. From the viewpoint of further enhancing the sound insulation performance of the joint 18 with a sound insulation cover that covers the collective joint 1 with the sound insulation cover 10A, polyethylene terephthalate (polyethylene terephthalate) is used as a sound insulation layer using a synthetic resin such as soft VC as a sound insulation layer. A sound absorbing layer made of PET) felt, urethane foam, polyethylene foam (PE), glass wool, rock wool or the like may be provided.

Further, from the viewpoint of effectively utilizing the flexibility of the sound insulation cover 10A and achieving a predetermined strength and sound insulation performance, the thickness of the sound insulation cover 10A is preferably 0.5 mm or more and 8 mm or less.
The method for molding the material of the above-mentioned flexible sound insulation cover 10A into a three-dimensional shape is not particularly limited, and examples thereof include a press molding method, a vacuum forming method, and a pneumatic molding method.

As shown in FIGS. 1 and 3, the outer surface 6p of the tapered pipe 6 is covered with the sound insulation cover (third cover portion) 20 from the viewpoint of further enhancing the sound insulation performance of the joint 18 with the sound insulation cover. The sound insulation cover 20 is preferably made of the same material as the sound insulation cover 10A, and is preferably arranged at a predetermined distance from the outer surface 6p of the taper pipe 6.

As shown in FIG. 3, in the sound insulation cover 10A, both ends in the circumferential direction of the main pipe 2 are connecting portions 15. In the sound insulation cover 20, both ends in the circumferential direction of the main pipe 2 are connecting portions 15. When covering the collective joint 1 with the sound insulation cover 10A, the connection portions 15 are overlapped with each other in the thickness direction of the sound insulation cover 10A and adhered to each other, or the connection portions are adjacent to each other along the circumferential direction of the main pipe 2 and some kind of adhesion is made. It can be joined with a material or fusion, or can be stopped with tape.

Similar to the sound insulation cover 10A, as shown in FIG. 6, in the sound insulation cover 20, both ends of the taper pipe 6 in the circumferential direction are connecting portions 25. When the taper pipe 6 is covered with the sound insulation cover 20, the connection portions 25 can be joined to each other by the same method as the method of connecting the connection portions 15 of the sound insulation cover 10A described above.

According to the sound insulation cover 10A of the first embodiment described above, since the assembly joint 1 is formed in a three-dimensional shape in advance along the outer surface of the assembly joint 1, the assembly joint 1 is covered with the sound insulation cover 10A and the connection portions 15 are bonded to each other. By simply doing so, the main pipe 2 of the collective joint 1 can be covered with the main pipe cover portion 12, the branch pipe 3 can be covered with the branch pipe cover portion 13, and the entire collective joint 1 can be covered on the surface of the sound insulation cover 10A without any gaps. it can. Further, the sound insulation cover 10A is arranged at a predetermined interval f from the outer surfaces 2p and 3p of the main pipe 2 and the branch pipe 3, respectively, and as shown in FIG. 5, between the outer surfaces 2p and 3p and the sound insulation cover 10A. The air layer Z can be formed. The air layer Z functions as a sound absorbing layer. Therefore, the collective joint 1 can be easily covered with the sound insulation cover 10A without any preparatory work, and the sound insulation performance of the joint 18 with the sound insulation cover can be improved and fully exhibited. Further, by configuring the sound insulation cover 10A with a flexible material, it is possible to facilitate the handling of the sound insulation cover 10A when covering the collective joint 1.

Further, in the sound insulation cover 10 of the first embodiment, the short pipe 5 and the tapered pipe 6 are fitted to the collective joint 1, and the tapered pipe 6 arranged at the lower part in the joint structure 8 is designated from the outer surface 6p of the tapered pipe 6. Since the sound insulation cover 20 is covered along the outer surface 6p at intervals, the sound insulation performance of the joint 18 with the sound insulation cover can be enhanced and fully exhibited.

From the viewpoint of further enhancing the sound insulation performance of the joint 18 with the sound insulation cover, the upper end portion 20a of the sound insulation cover 20 may be connected to the lower end of the main cover portion 12 in the sound insulation cover 10A, that is, the lower end portion 10b of the sound insulation cover 10A. preferable. That is, it is preferable that the vertical dimension of the sound insulation cover 20 is extended, and the short pipe 5 is covered in addition to the taper pipe 6 by the sound insulation cover 20. As a result, the entire joint structure 8 is covered with the sound insulation cover 10, and the sound insulation performance is improved. However, when the short pipe 5 is completely buried inside the mortar M as in the present embodiment, there is no exposed portion on each floor of the building, so that the short pipe 5 has no exposed portion as shown in FIG. The sound insulation cover 10 does not have to be covered.

(Second Embodiment)
Next, the sound insulation cover of the second embodiment to which the present invention is applied will be described. In the components of the sound insulation cover of the second embodiment, the same components as those of the sound insulation cover 10A of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

The sound insulation cover 10B of the second embodiment is a sound insulation cover that covers the collective joint 1 shown in FIG. 1, similarly to the sound insulation cover 10A of the first embodiment.

As shown in FIG. 7, a cut 16 is formed from the upper end 10a of the sound insulation cover 10B directly above the branch pipe cover portion 13 (that is, directly above the branch pipe cover portion 13 when covering the collective joint 1) to the branch pipe cover portion 13. It is formed.

As a modification of the sound insulation cover 10B, the sound insulation cover 10C shown in FIG. 8 can be mentioned. As shown in FIG. 8, in the sound insulation cover 10C, the sound insulation cover 10C is displaced from directly above the branch pipe cover portion 13 in the left-right direction (that is, the left-right direction when the collective joint 1 is covered, and the direction along the circumferential direction of the main pipe 2). A cut 16 is formed above the lower end of the connecting portion 14 between the main pipe cover portion 12 and the branch pipe cover portion 13 from the upper end 10a. The position of the upper end of the cut 16 is preferably, for example, an intermediate vicinity between the branch pipe cover portions 13 adjacent to each other in the left-right direction. By providing the upper end of the cut 16 in the vicinity of the middle of the branch pipe cover portions 13 in this way, it becomes difficult for the stress to be applied to the sound insulation cover 10C to be biased, and the sound insulation performance and durability of the sound insulation cover 10C are less likely to occur. Is improved.

As shown in FIG. 1, from the viewpoint of preventing moisture from entering the air layer Z from the portion embedded in the surrounding mortar M, the lower end of the cut 16 is a portion embedded in the mortar M in the collective joint 1. It is preferable that the portion is set sufficiently above the portion arranged opposite to the above. Explaining in detail using the branch pipe 3B, the lower end of the cut 16 is arranged to face the position P3B on the connecting portion 14 which is rotated 10 ° downward about the axis J3B from the horizontal line H3B passing through the axis J3B of the branch pipe 3B. It is preferable that the position is above the above position.

When the taper pipe 6 is covered with the sound insulation cover 20, when the side ends of the cut 16 in the left-right direction are adhered to each other, the same method as the method of connecting the connection portions 15 of the sound insulation cover 10A of the first embodiment is used. Can be used.

According to the sound insulation cover 10B of the second embodiment and the sound insulation cover 10C of the modified example described above, the sound insulation cover 10B is formed in a three-dimensional shape in advance along the outer surface 2p of the main pipe 2 of the collective joint 1 and the outer surface 3p of the branch pipe 3. Since it is made of a flexible material, the same effect as that of the sound insulation cover 10A of the first embodiment can be obtained.

Further, according to the sound insulation cover 10B of the second embodiment and the sound insulation cover 10C of the modified example thereof, a cut 16 is formed in the vertical direction from the upper end 10a to a predetermined position, so that the joints are covered with the sound insulation covers 10B and 10C. At the same time, by utilizing the flexibility of the materials constituting the sound insulation covers 10B and 10C, the posture of the branch pipe cover portion 13, which tends to be particularly difficult to align, can be flexibly adjusted, and the work efficiency is improved. By considering the position of the lower end of the cut 16 as described above, it is possible to surely prevent the moisture from the surrounding mortar M from entering the joint through the cut, and to prevent the collective joint 1 and the sound insulation covers 10B and 10C from deteriorating. This can be prevented and the sound insulation performance of the joint 18 with the sound insulation cover can be further exhibited.

(Third Embodiment)
Next, the sound insulation cover of the third embodiment to which the present invention is applied will be described. In the components of the sound insulation cover of the third embodiment, the same components as those of the sound insulation cover 10A of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

The sound insulation cover 10D of the third embodiment is a sound insulation cover that covers the collective joint 1 shown in FIG. 1, similarly to the sound insulation cover 10A of the first embodiment.

As shown in FIGS. 9A and 9B, the sound insulation cover 10D has a first cover portion 31 that covers the base end portion 3j of the main pipe 2 and the branch pipe 3, and a branch on the tip side of the base end portion 3j. A second cover portion 32 that covers the pipe 3 is provided.

As shown in FIG. 9A, the first cover portion 31 is a so-called single sheet-like material formed three-dimensionally, and the main cover portion included in the sound insulation cover 10A shown in FIG. 2 12 and the branch pipe cover portion 13j that covers the proximal end portion 3j by being arranged to face the proximal end portion 3j of the branch pipe 3 among the branch pipe cover portions 13 that are arranged to face the branch pipe 3 integrally. It is a series of installations.

As shown in FIG. 9B, the second cover portion 32 is formed in a tubular shape so as to be arranged at a predetermined interval f from the outer surface 3p of the branch pipe 3 on the tip side of the base end portion 3j. Has been done. In other words, the second cover portion 32 is a separate body of the branch pipe cover portion 13 that further protrudes from the branch pipe base end cover portion 13j in the sound insulation cover 10A shown in FIG.

According to the sound insulation cover 10D of the second embodiment described above, the sound insulation cover 10D is formed in a three-dimensional shape in advance along the outer surface 2p of the main pipe 2 of the collective joint 1 and the outer surface 3p of the base end portion 3j of the branch pipe 3, and is flexible. Since it is made of a material having a property, the same effect as that of the sound insulation cover 10A of the first embodiment can be obtained.

Further, since the sound insulation cover 10D of the third embodiment is composed of the first cover portion 31 and the second cover portion 32, the outer surface 2p of the main pipe 2 of the collective joint 1 and the base end portion 3j of the branch pipe 3 The outer surface 3p of the three-dimensional shape can be integrally covered, and the amount of protrusion of the three-dimensional shape can be made smaller than the amount of protrusion of the three-dimensional shape of the sound insulation cover 10A of the first embodiment. As a result, when the joint is covered with the sound insulation cover 10, the sound insulation cover 10D can be easily aligned with the collective joint 1 and can be easily handled. Further, when the flexible material is molded by press molding, vacuum forming, pneumatic molding or the like when manufacturing the sound insulation cover 10D, the molding amount can be suppressed and the sound insulating cover 10D can be easily manufactured.

Similar to the sound insulation cover 10B of the second embodiment and the sound insulation cover 10C of the modified example thereof, a cut 16 may be formed in the sound insulation cover 10D. As a result, the same action and effect as those of the sound insulation covers 10B and 10C can be obtained.

Although the preferred embodiments of the present invention have been described in detail above, the present invention is not limited to the specific embodiments, and various aspects of the present invention are described within the scope of the claims. It can be transformed and changed.

For example, in each of the above-described embodiments, an collective joint 1 having three branch pipes 3 on the side surface 2r of the main pipe 2 has been exemplified. When the above-mentioned sound insulation cover 10 is applied to a joint in which three or more branch pipes 3 are connected to the side surface 2r of the main pipe 2, the shape of the joint becomes complicated. The effect of the sound insulation cover 10 is enhanced as compared with the above, but it goes without saying that the number of branch pipes 3 may be two, for example.
Further, even in a joint in which three branch pipes 3 are connected to the side surface 2r of the main pipe 2, the arrangement of the branch pipes 3 is not limited to the arrangement illustrated in FIG. 2 and the like. For example, the respective axes of the branch pipe 3 may be arranged on the same virtual plane orthogonal to the main pipe 2, and may be located on the same virtual plane at equal angles to each other.
Further, the joint covered with the sound insulation cover 10 is not limited to the collective joint 1 used in the drainage system of a building, and can be applied to a joint used in any pipe.

1 ... Collective joint (joint)
2 ... Main pipe 2r ... Side surface 3, 3A, 3B, 3C ... Branch pipe 3j ... Base end 8 ... Joint structure 10, 10A, 10B, 10C, 10D ... Sound insulation cover (sound insulation cover for joint)
10a ... Upper end 10b ... Lower end 12 ... Main cover 13 ... Branch pipe cover 14 ... Connecting 18 ... Joint with sound insulation cover 20 ... Sound insulation cover (third cover)
31 ... 1st cover part 32 ... 2nd cover part

Claims (7)

A sound insulation cover for a joint that covers a joint having a main pipe and a branch pipe connected to a side surface of the main pipe.
The main cover portion that covers the main and
A branch pipe cover portion that covers at least the base end portion of the branch pipe and is integrally provided with the main pipe cover portion is provided.
The main pipe cover portion and the branch pipe cover portion are three-dimensionally formed in a shape along the outer surface at a predetermined distance from the outer surface of the main pipe and the branch pipe, and are thermoplastic resin or thermosetting. Ri resin Tona,
With the joint covered, a cut is formed in the main cover portion along the vertical direction from the upper end directly above the branch pipe cover portion to the branch pipe cover portion, and the cut is formed in the branch pipe cover portion. Sound insulation cover for fittings, characterized in that no is formed. A sound insulation cover for a joint that covers a joint having a main pipe and a branch pipe connected to a side surface of the main pipe.
The main cover portion that covers the main and
A branch pipe cover portion that covers at least the base end portion of the branch pipe and is integrally provided with the main pipe cover portion is provided.
The main pipe cover portion and the branch pipe cover portion are three-dimensionally formed in a shape along the outer surface at a predetermined distance from the outer surface of the main pipe and the branch pipe, and are thermoplastic resin or thermosetting. Made of resin
A first cover portion that covers the base end portion of the main pipe and the branch pipe, and
A second cover portion that covers the tip end side of the base end portion of the branch pipe is provided.
A sound insulation cover for a joint, wherein the second cover portion is a separate body of the branch pipe cover portion. The main cover portion that covers the main and
A branch pipe cover portion that covers at least the base end portion of the branch pipe and is integrally provided with the main pipe cover portion is provided.
The main pipe cover portion and the branch pipe cover portion are three-dimensionally formed in a shape along the outer surface at a predetermined distance from the outer surface of the main pipe and the branch pipe, and are thermoplastic resin or thermosetting. Made of resin
With the joint covered, the main cover portion is above the lower end of the connecting portion between the main cover portion and the branch pipe cover portion from the upper end shifted in the left-right direction from directly above the branch pipe cover portion. sound insulation cover for joint hand, characterized that you have cut is formed along the vertical direction to. Another pipe member is fitted to the lower part of the main pipe.
Any one of claims 1 to 3 , further comprising a third cover portion that covers at least the lower portion of the pipe member along the outer surface of the pipe member at a predetermined distance from the outer surface of the pipe member. Sound insulation cover for fittings described in. The sound insulation cover for a joint according to claim 4 , wherein the upper end portion of the third cover portion is connected to the lower end portion of the main cover portion. A joint comprising the sound insulation cover for the joint according to any one of claims 1 to 5. The joint according to claim 6 , wherein three or more of the branch pipes are connected to the side surface of the main pipe.

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