JP7108435B2 - Cover material for piping - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe cover member that is wound around pipes.

The piping cover member is attached to a drain pipe, for example, for the purpose of reducing the sound of draining water from the drain pipe. Specifically, a cover member for pipes over a joint, which is one of the pipes with an inspection port provided in the middle of the drain pipe, and a drain pipe with a smaller diameter than the joint connected above and below the joint as a sound insulation cover. This cover member for piping is composed of a sheet-like member, and has an oblong main body portion that is long in the winding direction (circumferential direction of the pipe or joint) with an opening formed in the portion corresponding to the inspection port, and the upper and lower body portions. A diameter-reduced portion in which V-shaped slits are cut at predetermined intervals on each end portion, and a lid portion formed at one end portion in the winding direction of the main body portion in order to close the inspection opening. .

When installing this cover member for piping, first, the main body is wound around the joint. Next, by tightening each of the reduced diameter parts located at the top and bottom of the main body with a binding band, the diameter of the upper and lower reduced diameter parts is reduced so that the outer diameter gradually decreases toward the tip, and the upper and lower drainage pipes are connected respectively. It is fixed (for example, Patent Document 1).

Japanese Patent Application Laid-Open No. 2017-8705 (see FIGS. 14(a) and (b))

In the cover member for pipes disclosed in Patent Document 1, when the diameter-reduced portion is tightened with a binding band, the outer diameter of the diameter-reduction portion gradually decreases toward the tip, so that the binding band does not slip on the surface of the diameter-reduction portion. may move to the distal side and come off the distal end of the reduced diameter portion. When the binding band comes off from the diameter-reduced portion in this manner, the binding band must be returned to the diameter-reduced portion and the tightening operation must be redone, which is inconvenient.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a piping cover member that can be easily attached to piping.

In order to solve the above-described problems, the piping cover member of the present invention has a cover body to be wrapped around the piping, and a band that is tapered so that the outer diameter gradually decreases toward the tip while being wrapped around the piping. and a diameter-reduced portion fixed to the pipes, and the diameter-reduced portion is provided with a band engaging portion for engaging the band in the distal direction in a diameter-reduced state.

According to the present invention, when the diameter-reduced portion is tightened with a band after the cover body is wrapped around the pipes, the outer diameter of the diameter-reduced portion gradually decreases toward the tip. As a result, the band moving toward the distal end side of the diameter-reduced portion is engaged with the band-retaining portion, thereby preventing the band from coming off the distal end of the diameter-reduced portion. Therefore, it is possible to eliminate the need to return the band removed from the diameter-reduced portion to the diameter-reduced portion and tighten it.

Further, in the pipe cover member of the present invention, the band engaging portion may constitute a stepped portion rising radially outward in the state of being reduced in diameter.

As described above, when the diameter of the diameter-reduced portion is reduced, the band engaging portion constitutes the stepped portion that rises in the radially outward direction, so that the band is engaged with the stepped portion when the diameter of the diameter-reduced portion is contracted.

Further, in the pipe cover member of the present invention, the diameter-reduced portion may be provided at one widthwise end portion of the cover body, and the band engaging portion may be provided at the tip of the diameter-reduced portion.

As described above, by providing the band engaging portion at the distal end of the diameter-reduced portion, it is possible to reliably engage the band moving toward the distal end side when the diameter-reduced portion is contracted.

According to the present invention, the reduced diameter portion is provided with a band engaging portion that engages the band in the distal direction while the diameter is reduced. It is possible to provide a pipe cover member that facilitates mounting work.

It is a front view which shows the state just before winding the cover member for piping of 1st Embodiment around a joint. It is a longitudinal side view which shows the state which wound and mounted|worn the cover member for piping on a joint. It is a perspective view of the principal part which shows the state which wound and mounted|worn the cover member for piping on a joint. It is a front view of the cover member for the same piping. It is a front view which shows the state just before winding the cover member for piping of 2nd Embodiment around a joint. (a) to (d) are front views showing other band locking portions. (a) to (d) are front views showing other band locking portions. (a) to (c) are front views showing other band locking portions. (a) to (c) are front views showing other band locking portions. (a) and (b) are front views showing other band locking portions.

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings.

<First embodiment>
1 and 2 show a joint (pipes) 1 having a lid 1A for closing an inspection port (not shown) and two upper and lower pipes having an outer diameter smaller than the joint 1 connected to the upper and lower sides of the joint 1. The state immediately before the first pipe cover member 4 as a sound insulation cover is wound over the drain pipes 2 and 3 is shown. In addition, in the first pipe cover member 4 shown in FIG. 1, the vertical direction on the paper surface is defined as the width direction W, and the horizontal direction on the paper surface is defined as the length direction L in the following description. Therefore, the first pipe cover member 4 is wound in the longitudinal direction L around the pipes with the width direction W of the first pipes cover member 4 facing the axial direction of the pipes.

The first piping cover member 4 is configured as a flexible sheet so that it can be wrapped around the piping. Specifically, a sound absorbing layer composed of PET felt placed inside (on the piping side), a vinyl chloride resin layer constituting a sound insulating layer laminated outside the sound absorbing layer, and a vinyl chloride resin layer laminated on the outermost side Although it has a three-layer structure including a protective layer made of nonwoven fabric made of synthetic resin, it may have another structure. In addition, as shown in FIGS. 1 to 4, the first piping cover member 4 includes a cover body 5 wound around the joint 1 and a cover body 5 wound around the piping so that the outer diameter gradually decreases toward the tip. The diameter-reduced portions 6, 6 are fixed to the upper and lower drainage pipes 2, 3 by reducing the diameter with a band 8, and the diameter-reduced portions 6, 6 each have the band 8 extending in the distal direction in the diameter-reduced state. It has a band locking portion 7 that locks in (outward in the width direction W).

The cover body 5 is formed in a substantially rectangular shape longer in the length direction than in the width direction, has longer sides than the outer diameter of the joint 1, and has a substantially square opening at a portion of the joint 1 corresponding to the lid 1A. 5A is formed. The length in the length direction L is preferably set longer than the circumferential dimension (outer diameter dimension) of the pipes to be wound, but in some cases, the circumferential dimension (outer diameter dimension).

As shown in FIGS. 1 and 4, each of the reduced-diameter portions 6, 6 has a large number of substantially V-shaped notches 6K which are spaced apart at predetermined intervals in the longitudinal direction of the cover body 5 and narrower toward the base end. are formed, so that a large number (six in the figure) of trapezoidal pieces 6A are formed between the cutouts 6K. By tightening each of the reduced diameter portions 6, 6 configured in this way with a band 8, the adjacent piece portions 6A approach in the circumferential direction so as to close the notch 6K, and the outer diameter increases toward the tip. It can be deformed to gradually become smaller. In FIG. 2, the diameter-reduced portion 6, which is tightened and has a reduced diameter, has a linear inclined surface positioned closer to the drain pipe 2 toward the tip.

Each band engaging portion 7 is provided at the tip of a large number of pieces 6A constituting the reduced diameter portion 6, and is formed in a rectangular shape extending in the length direction of the cover main body 5 (lateral direction orthogonal to the vertical direction in the figure). ing. By tightening a band 8 on the base end side portion of the wound pipe cover member 4 from the distal end of the reduced diameter portions 6, 6, the band locking portion 7 positioned at the unfastened distal end is secured. A stepped portion 7D (see FIGS. 2 and 3) which rises in the radially outward direction (has a high step) is formed. In other words, even if the band 8 tightens the base end portion of the diameter-reduced portion 6, the band locking portion 7, to which the tightening force of the band 8 does not act, maintains a state of extending radially outward without being reduced in diameter. By doing so, the step portion 7D can be configured to be higher than other portions. The tightened band 8 slides on the inclined surface of the piece 6A shown in FIG. This can prevent the band 8 from coming off from the reduced diameter portion 6 . In FIGS. 1 and 4, the band locking portions 7 are provided at both longitudinal ends of the cover main body 5 at the tip of the leftmost piece 6A, but the other piece 6A has a cover at the tip. A band engaging portion 7 is provided only at one end in the longitudinal direction of the main body 5 (the right end in the drawing).

As shown in FIG. 3, the band 8 is made of Insulok (registered trademark) made of metal or synthetic resin. and a rectangular tube-shaped lock portion 8B having a locking claw (not shown) that holds the portion 8A in a retaining state.

The construction procedure of the first piping cover member 4 will be described. (See Fig. 2). These piping cover members 9 and 10 are composed of cover members that do not have the diameter-reduced portion 6 and the band engaging portion 7 in order to wind the drainage pipes (pipes) 2 and 3 having the same outer diameter. It may have the same three-layer structure as that of the pipe cover member 4, or may have another structure.

First, as shown in FIG. 1, the lid 1A on the front surface of the joint 1 is aligned with the opening 5A of the cover body 5 so as to cover the joint 1 and the upper and lower drainage pipes 2 and 3 (see FIG. 1). From this state, the first pipe cover member 4 is wound longitudinally around the joint 1 with its width direction facing the pipe axis direction of the joint 1 . After winding the first pipe cover member 4 around the joint 1, it is fixed with a tape. Next, the reduced diameter portion 6 at the upper end of the first pipe cover member 4 is tightened with a band 8, and the upper reduced diameter portion 6, which is the upper end portion of the first pipe cover member 4, is attached to the upper drainage pipe 2. fixed. At this time, since the outer diameter of the drain pipe 2 is smaller than the outer diameter of the joint 1, the outer diameter of the reduced-diameter portion 6 tightened by the band 8 is gradually reduced toward the tip (in the tilted posture shown in FIG. 2). ), the deformation causes the band 8 to slide on the surface of the diameter-reduced portion 6 toward the distal end (outward in the width direction of the first pipe cover member 4) and come off the diameter-reduced portion 6. Storing can be prevented by engagement with a band engagement portion 7 provided at the tip of the reduced diameter portion 6 . That is, as described above, the band locking portion 7 is formed by tightening the band 8 at a portion closer to the base end than the distal end of the diameter-reduced portion 6 so that the band locking portion 7 located at the untightened distal end can be secured. form a step portion 7D that rises (becomes a high step) in the radially outward direction. Thereby, the band 8 can be locked to the step portion 7D.

When the fixing of the reduced diameter portion 6 on the upper end side to the upper drainage pipe 2 is completed, the operation of fixing the reduced diameter portion 6 on the lower end side to the lower drainage pipe 3 is performed in the same manner as described above, and the first piping The construction of the cover member 4 for is completed. Although not shown, in FIGS. 1 and 2, it is preferable to mount the lid cover member covering the front of the joint 1 last. This lid cover member may be attached to or formed integrally with the first pipe cover member 4, or the lid cover member configured separately from the first pipe cover member 4 may be fixed by a fixing means. You may fix so that the front of the joint 1 may be covered. Also, in FIG. 3, a finishing operation may be performed to cover the band 8 and the notch 6K with an adhesive tape.

<Second embodiment>
In the first embodiment, the cover member 4 for the first piping covering the joint 1 is shown. The cover member 12 for pipes and the cover member 13 for the third pipes will be described as examples. The second pipe cover member 12 and the third pipe cover member 13 have a three-layer structure similar to the second pipe cover member 12 and the third pipe cover member 13. , other configurations are possible.

As shown in FIG. 5, the collective drainage pipe 11 is installed in a state of vertically penetrating through a through hole 14A formed in a floor slab 14, which is a division body of the building. Although not shown, the space between the outer surface of the collective drainage pipe 11 and the through hole 14A of the floor slab 14 is filled with a filler such as mortar.

In addition, a first vertical pipe 15 is connected to the upper end of the collective drainage pipe 11, a horizontal branch pipe 16 is connected to the lateral side of the collective drainage pipe 11, and a lower end of the collective drainage pipe 11 is connected. A second vertical pipe 17 is connected to the vertical direction.

A second pipe cover member 12 is wound around the upper portion of the collecting drain pipe 11 and the lower end portion of the first vertical pipe 15 and attached. The second pipe cover member 12 has three different sizes so as to be able to penetrate the three branch pipes in the circumferential direction and to correspond to the outer diameter dimensions of the branch pipes having different outer diameters. A cover body 18 formed at three locations adjacent to each other with annular perforations 18A, 18B, and 18C in the longitudinal direction (horizontal direction in the drawing), and a cover body 18 extending from the upper end of the cover body 18 and wound around the first vertical pipe 15. A diameter-reduced portion 19 having the same configuration as described above, which is fixed to the upper first vertical pipe 15, which is a pipe, by reducing the diameter with a band 8 so that the outer diameter gradually decreases toward the tip in the state of being held, The diameter-reduced portion 19 is provided with a band engaging portion 20 having the same configuration as that described above for engaging the band 8 in the distal direction in a diameter-reduced state. The diameter-reduced portion 19 is formed by forming a large number of substantially V-shaped notches 19K at predetermined intervals in the longitudinal direction of the cover main body 18, the width of which is narrower toward the base end side. A large number (six pieces in the figure) of trapezoidal pieces 19A are formed to have smaller dimensions toward the tip side.

A procedure for constructing the second pipe cover member 12 will be described. In the same manner as described above, a pipe cover member (not shown) is wound around the first vertical pipe 15 before the second pipe cover member 12 is installed.

First, among the three annular cut lines 18A, 18B, and 18C located at the right end in the length direction of the second pipe cover member 12, the outermost cut line is cut so as to match the outer diameter of the branch pipe 16. Cut line 18A. The notch 18K of the cover main body 18 is inserted into the branch pipe 16 while the cover member 12 for the second pipes is wrapped around the upper part of the collecting drain pipe 11 from the state in which the notch 18K is cut and the bottom is open. . In this state, the upper end portion of the second pipe cover member 12 is fixed to the lower end portion of the first vertical pipe 15 by tightening the diameter-reduced portion 19 on the upper end side of the second pipe cover member 12 with a band in the same manner as described above. do. At this time, since the outer diameter of the first vertical pipe 15 is smaller than the outer diameter of the collecting drain pipe 11, the outer diameter of the reduced diameter portion 19 tightened with the band is gradually reduced toward the tip (2 in FIG. 5). The tip of the diameter-reduced portion 19 is provided so that the band moves toward the distal direction on the surface of the diameter-reduced portion 19 due to the deformation and comes off the diameter-reduced portion 19. This can be prevented by locking with the band locking portion 20 (not shown since it is the same as in FIGS. 2 and 3).

Further, the third piping cover member 13 is wound and mounted over the connection portion 11A of the collective drain pipe 11 to which the branch pipe 16 is connected and the end portion of the collective drain pipe 11 side of the branch pipe 16 . The third pipe cover member 13 includes a rectangular cover body 21 that is wound around the connection portion 11A of the collective drainage pipe 11, and one end of the cover body 21 in the width direction, and the outer diameter gradually decreases toward the tip. A diameter-reduced portion 22 having the same configuration as described above is fixed to a branch pipe 16, which is a pipe, by reducing the diameter with a band 8 so that the band 8 is reduced in diameter so that A band locking portion 23 having the same configuration as the above is provided for locking in the direction. The diameter-reduced portion 22 is formed by forming a large number of substantially V-shaped notches 22K at predetermined intervals in the longitudinal direction of the cover body 21 and having a narrower width toward the proximal end side, so that the width between the notches 22K is reduced. A large number (six pieces in the figure) of trapezoidal pieces 22A are formed, the size of which decreases toward the tip side. When the third piping cover member 13 is wound around the connecting portion 11A of the collective drainage pipe 11, as shown in FIG. In order to orient the third pipe cover member 13 in the pipe axis direction, the posture of the third pipe cover member 13 is changed to a vertical posture in which the length direction of the third pipe cover member 13 is set in the vertical direction (vertical direction).

A procedure for constructing the third pipe cover member 13 will be described. In the same manner as described above, a pipe cover member (not shown) is wound around the branch pipe 16 before the third pipe cover member 13 is installed.

First, the third pipe cover member 13 in the vertical orientation is wound around the connecting portion 11A of the collective drainage pipe 11 . In this state, in the same manner as described above, the diameter-reduced portion 22 on one widthwise end side (the right end side in FIG. 5) of the third piping cover member 13 is tightened with a band (not shown) to attach the third piping to the branch pipe 16 . One end of the cover member 13 in the width direction is fixed. At this time, since the outer diameter of the branch pipe 16 is smaller than the outer diameter of the connection portion 11A of the collective drainage pipe 11, the outer diameter of the reduced diameter portion 22 tightened by the band is gradually reduced toward the tip (Fig. 5). ), and the deformation causes the band to move on the surface of the diameter-reduced portion 22 toward the distal direction and come off the diameter-reduced portion 22. This can be prevented by locking with the provided band locking portion 23 (the illustration is omitted because it is the same as in FIGS. 2 and 3).

The present invention is not limited to the above-described embodiments, and various modifications are possible without departing from the gist of the present invention. For example, the band engaging portion 7 shown in FIGS. 1-4 may be configured as shown in FIGS. 6-10. It should be noted that only one band engaging portion is shown in the figure.

6(a) to 6(d), the band engaging portion is configured to extend only to one end side in the winding direction of the band 8, and four types of shapes are shown. Specifically, in FIG. 6(a), an upwardly extending portion 24A extending upward from substantially the center of the upper end of the reduced diameter portion 6, and one end of the band 8 in the winding direction (in the figure, from the upper end of the upwardly extending portion 24A) The band engaging portion 24 is configured with a laterally extending portion 24B extending from the right end) to the right side (or the left side). Therefore, by reducing the diameter of the reduced-diameter portion 6 with the band 8, the band 8 slides on the surface of the reduced-diameter portion 6 toward the distal direction (outward in the width direction W), and the upper end of the band 8 that has moved is The lower end 24b of the laterally extending portion 24B is locked to prevent the band 8 from moving in the distal direction (upward in the drawing). In FIG. 6(b), an inclined portion 25A that rises obliquely upward from one end in the winding direction of the band 8 at the upper end of the diameter-reduced portion 6 (the right end in the figure, but may be the left end), and the inclined portion 25A from the upper end of the inclined portion 25A ( A band engaging portion 25 is composed of a lateral portion 25B extending to the right in the drawing and a lower portion 25C extending downward from the right end of the lateral portion 25B. Therefore, by reducing the diameter of the reduced-diameter portion 6 with the band 8, the band 8 slides on the surface of the reduced-diameter portion 6 toward the distal direction (outward in the width direction W), and the upper end of the band 8 that has moved is The lower end 25b of the horizontal portion 25B is locked to prevent the band 8 from moving in the distal direction (upward in the figure). In FIG. 6(c), the upper end of the reduced diameter portion 6 is inserted into the band 8 from one end in the winding direction (the left end in the figure, but may be the right end) to form a U-shaped cut. By forming the notch 26K, an extending portion 26A extending to one side in the winding direction (to the left in the figure) is formed to constitute the band engaging portion 26. As shown in FIG. Therefore, by reducing the diameter of the reduced-diameter portion 6 with the band 8, the band 8 slides on the surface of the reduced-diameter portion 6 toward the distal direction (outward in the width direction W), and the upper end of the band 8 that has moved is The lower end of the extending portion 26A, that is, the upper end of the notch 26K, is locked to prevent the band 8 from moving toward the distal end (upward in the figure). In FIG. 6(d), it extends from one end (right end in the figure) in the winding direction of the band 8 at the upper end of the reduced diameter portion 6 to the right side (the right end in the figure, but it may be the left side) and downwards toward the right side (tip). A band engaging portion 27 is formed from the inclined extending portion located. Therefore, by reducing the diameter of the reduced-diameter portion 6 with the band 8, the band 8 slides on the surface of the reduced-diameter portion 6 toward the distal direction (outward in the width direction W), and the upper end of the band 8 that has moved is The upper end of the band 8 is locked to the corner 27A between the right upper end of the diameter-reduced portion 6 and the lower left end of the band locking portion 27 to prevent the band 8 from moving toward the distal end.

7(a) to 7(d), the band engaging portion is configured to extend on both sides in the winding direction of the band 8, and four types of shapes are shown. Specifically, in FIG. 7A, an upward extension portion 28A extending upward from the left-right central portion of the upper end portion of the reduced diameter portion 6 and both sides of the band 8 in the winding direction from the upper end portion of the upward extension portion 28A. A pair of laterally extending portions 28B, 28B extending right beside the band-locking portion 28 constitute the band-locking portion 28. As shown in FIG. Therefore, by reducing the diameter of the reduced-diameter portion 6 with the band 8, the band 8 slides on the surface of the reduced-diameter portion 6 toward the distal direction (outward in the width direction W), and the upper end of the band 8 that has moved is The lower ends 28b, 28b of the laterally extending portions 28B, 28B are locked to prevent the band 8 from moving in the distal direction. In FIG. 7(b), a pair of inclined portions 29a and 29d rising obliquely upward from both ends of the band 8 in the winding direction of the upper end portion of the diameter-reduced portion 6, and a pair of inclined portions 29a and 29d right beside the upper end portion of the inclined portions 29a and 29d. ) and lower portions 29c and 29f extending downward from the ends of the band 8 in the winding direction (left and right ends in the figure) of the lateral portions 29b and 29e. It constitutes a locking portion 29 . Therefore, by reducing the diameter of the reduced-diameter portion 6 with the band 8, the band 8 slides on the surface of the reduced-diameter portion 6 toward the distal direction (outward in the width direction W), and the upper end of the band 8 that has moved is The lower ends 29B, 29E of the lateral portions 29b, 29e are locked to prevent the band 8 from moving in the distal direction. In FIG. 7(c), a pair of lateral portions 30A and 30B extending directly laterally (right and left in the drawing) from the upper end of the diameter-reduced portion 6 constitute the band engaging portion 30. In FIG. Therefore, by reducing the diameter of the reduced-diameter portion 6 with the band 8, the band 8 slides on the surface of the reduced-diameter portion 6 toward the distal direction (outward in the width direction W), and the upper end of the band 8 that has moved is The lower ends 30a, 30b of the lateral portions 30A, 30B are locked to prevent the band 8 from moving in the distal direction. In FIG. 7(d), a pair of inclined extensions 31A and 31B extending laterally (left and right in the figure) from the upper end of the diameter-reduced portion 6 and positioned downward toward the distal end constitute the band engaging portion 31. ing. Therefore, by reducing the diameter of the reduced-diameter portion 6 with the band 8, the band 8 slides on the surface of the reduced-diameter portion 6 toward the distal direction (outward in the width direction W), and the upper end of the band 8 that has moved is , the corner 31a between the left upper end of the reduced diameter portion 6 and the right end of the left inclined extension portion 31A, and the corner 31b between the right upper end of the reduced diameter portion 6 and the left end of the right inclined extension portion 31B. movement of the band 8 in the distal direction is prevented.

8(a) to 8(c), U-shaped cutouts 32K and 34K are formed in the upper end of the reduced diameter portion 6 in FIGS. 8(a) and 8(c). In 8(b), by forming a notch 33K in a substantially U-shape (see FIG. 8(b)), three cut-and-bent pieces 32A, 33A, 34A are formed, and these cut-and-bent pieces 32A, 33A, The band engaging portions 32, 33, and 34 can be formed by cutting and raising 34A upward in the figure. FIG. 8(a) shows a cut-and-raised piece 32A extending to one end side of the band 8 in the winding direction (right side in the drawing, but may be left side). Therefore, by reducing the diameter of the reduced-diameter portion 6 with the band 8, the band 8 slides on the surface of the reduced-diameter portion 6 toward the distal direction (outward in the width direction W), and the upper end of the band 8 that has moved is , the cut-and-raised piece 32A is engaged with the lower end 32a to prevent the band 8 from moving in the distal direction (upward in the figure). FIG. 8(b) shows an inclined cut-and-raised piece 33A which extends downward and is positioned closer to one end in the winding direction of the band 8 (on the right side in the figure, but may be on the left side) toward the tip side. Therefore, by reducing the diameter of the reduced-diameter portion 6 with the band 8, the band 8 slides on the surface of the reduced-diameter portion 6 toward the distal direction (outward in the width direction W), and the upper end of the band 8 that has moved is The cut-and-raised inclined piece 33A is engaged with the back surface side portion 33a of the base end portion thereof to prevent the band 8 from moving to the distal side. In FIG. 8(c), it is a cut-and-raised piece 34A extending downward. Therefore, by reducing the diameter of the reduced-diameter portion 6 with the band 8, the band 8 slides on the surface of the reduced-diameter portion 6 toward the distal direction (outward in the width direction W), and the upper end of the band 8 that has moved is The upper end of the band 8 is locked to the back side portion 34a of the base end portion of the cut and raised piece 34A, thereby preventing the band 8 from moving to the tip side (upward in the figure).

9(a)-(c), holes 35K, 36K, 37K are formed in the upper end of the reduced diameter portion 6, respectively, and tongues 35A, 36A, 37A are formed in the holes 35K, 36K, 37K. A case is shown in which band locking portions 35, 36, and 37 are formed by protruding. FIG. 9(a) shows a state in which the tongue 35A extends from one end of the band 8 in the winding direction of the hole 35K to the other end (in the figure, it is from the left end to the right end, but the reverse is also possible). Therefore, by reducing the diameter of the reduced-diameter portion 6 with the band 8, the band 8 slides on the surface of the reduced-diameter portion 6 toward the distal direction (outward in the width direction W), and the upper end of the band 8 that has moved is , the lower end 35a of the tongue piece 35A prevents the band 8 from moving in the distal direction (upward in the figure). FIG. 9B shows an inclined state in which the tongue piece 36A extends downward from the left-right center of the upper end of the hole 36K and inclines to the right toward the tip. Therefore, by reducing the diameter of the reduced-diameter portion 6 with the band 8, the band 8 slides on the surface of the reduced-diameter portion 6 toward the distal direction (outward in the width direction W), and the band 8 that has moved The upper end of the band 8 is locked to the rear side portion 36a of the proximal end portion of the tongue piece 36A, thereby preventing the band 8 from moving in the distal direction. FIG. 9(c) shows a state in which the tongue piece 37A extends downward from the center in the winding direction of the band 8 at the upper end of the hole 37K (in the drawing, downward from the left-right center). Therefore, by reducing the diameter of the reduced-diameter portion 6 with the band 8, the band 8 slides on the surface of the reduced-diameter portion 6 toward the distal direction (outward in the width direction W), and the upper end of the band 8 that has moved is , the upper end of the band 8 is locked to the back side portion 37a of the base end portion of the tongue piece 37A, thereby preventing the band 8 from moving to the distal side.

In FIG. 10(a), a pair of upper and lower laterally extending portions 38A and 38B extending toward one end (right side in the figure) in the winding direction of the band 8 at the upper end portion of the reduced diameter portion 6 are provided, and the band engaging portion 38 is constitutes Therefore, by reducing the diameter of the reduced-diameter portion 6 with the band 8, the band 8 slides on the surface of the reduced-diameter portion 6 toward the distal direction (outward in the width direction W), and the upper end of the band 8 that has moved is , and the lower end 38a of the upper laterally extending portion 38A to prevent movement of the band 8 in the distal direction (upward in the figure). The gap between the lower end 38a of the upper laterally extending portion 38A and the upper end 38b of the lower laterally extending portion 38B is made equal to the width (vertical dimension) of the band 8 or larger than the width of the band 8. is doing. As a result, the band 8 can be positioned between the lower end 38a of the upper laterally extending portion 38A and the upper end 38b of the lower laterally extending portion 38B, and there is the advantage that the band 8 can be easily tightened. .

In FIG. 10(b), a band engaging portion 39 is provided that extends from the intermediate portion between the base end and the upper end of the reduced diameter portion 6 to one end side in the winding direction of the band 8 (left side in the drawing). Therefore, the upper end of the band 8 is engaged with the lower end 39a of the band engaging portion 39 provided midway in the vertical direction of the diameter-reduced portion 6 in a state where the diameter-reduced portion 6 is reduced in diameter, so that the movement of the band 8 in the distal direction is prevented. prevented.

In the above-described embodiment, the band locking portion is configured to extend in the width direction of the pipe cover member. good. The protruding portion may be configured by attaching a protruding portion that is integrally formed with the pipe cover member or separately formed with an adhesive or a double-faced tape. Alternatively, the shaft portion of the pin may be inserted into the cover member for pipes so that the head portion of the pin serves as a projecting portion.

In the above-described embodiment, the piping cover member is wrapped around the drainage pipe and the drainage collecting pipe, but the piping cover member may be wrapped around the piping such as a water distribution pipe, a drain pipe, and a hot water supply pipe.

Further, in the above embodiment, the cover member for pipes is composed of a material having sound insulation properties, but it may be composed of a material having fire resistance or heat retention (prevention of dew condensation and temperature reduction).

DESCRIPTION OF SYMBOLS 1... Joint, 1A... Lid, 2, 3... Drainage pipe, 4... Cover member for first piping, 5... Cover main body, 5A... Opening, 6... Reduced diameter portion, 6A... Piece, 6K... Notch, 7 Band locking portion 7D Stepped portion 8 Band 8A Band portion 8B Lock portion 9, 10 Piping cover member 11 Collective drainage pipe 11A Connection portion 12 Third 2 Cover member for piping, 13 Cover member for third piping, 14 Floor slab, 14A Through hole, 15 First vertical pipe, 16 Branch pipe, 17 Second vertical pipe, 18 Cover main body , 18A, 18B, 18C... Perforated line 19... Diameter reduction part 19A... Piece part 19K... Notch 20... Band locking part 21... Cover main body 22... Diameter reduction part 22A... Piece part 22K Notch 23 Band locking portion 24 Band locking portion 24A Upper extending portion 24B Lateral extending portion 24b Lower end 25 Band locking portion 25A Inclined portion 25B Lateral portion 25C Lower portion 25b Lower end 26 Band engaging portion 26A Extending portion 27 Band engaging portion (inclined extending portion) 27A Corner 28 Band engaging portion 28A 28B: Lateral extension 28b: Lower end 29: Band locking portion 29A, 29B: Extending portion 29C, 29E: Lower end 29a, 29d: Inclined portion 29b, 29e: Horizontal Parts 29c, 29f... Lower part 30... Band locking part 30A, 30B... Horizontal part 30a, 30b... Lower end 31... Band locking part 31A, 31B... Inclined extension part 31a, 31b... Corner part , 32, 33, 34... Band locking parts 32A, 33A, 34A... Cut and raised pieces 33a... Back side part 34a... Back side part 35, 36, 37... Band locking parts 35A, 36A, 37A Tongue 35K, 36K, 37K Hole 35a Lower end 36a, 37a Back side portion 38 Band locking portion 38A, 38B Horizontally extending portion 38a Lower end 38b Upper end 39 Band locking part, 39a...lower end

Claims (2)

A cover body to be wound around the pipes, and a diameter-reduced part fixed to the pipes by reducing the outer diameter with a band so that the outer diameter gradually decreases toward the tip while being wrapped around the pipes. The diametrical portion is provided with a band locking portion that locks the band in the distal direction in a contracted state ,
A cover member for pipes, wherein the band engaging portion constitutes a stepped portion that rises in a radially outward direction in the reduced diameter state . A cover body to be wound around the pipes, and a diameter-reduced part fixed to the pipes by reducing the outer diameter with a band so that the outer diameter gradually decreases toward the tip while being wrapped around the pipes. The diametrical portion is provided with a band locking portion that locks the band in the distal direction in a contracted state,
A pipe cover member, wherein the diameter-reduced portion is provided at one end in the width direction of the cover main body, and the band locking portion is provided at the tip of the diameter-reduced portion.

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