JP3070566U - Drain pipe fitting for direction change - Google Patents

Abstract

(57) [Summary] [Problem] To reduce the number of parts required for connection construction and the construction time, and to improve the adhesion to each drainage horizontal pipe to eliminate the possibility of drainage leakage, Provided is a drainage joint for directional conversion that can reliably connect the drainage horizontal pipes even if their axial centers are deviated from a desired set position. SOLUTION: This is a direction changing drain pipe joint for connecting drain-shaped horizontal pipes having an oval cross-section to each other in an internal communication state, and has an oval cross-section which can be externally fitted to an end of one drain horizontal pipe. A first oval tube connecting portion, a second oval tube connecting portion having an oval cross section that can be externally fitted to the end of the other drainage horizontal tube, and bent between the oval tube connecting portions at a predetermined angle And a joint body having a bent tube portion formed integrally with a flexible member having mechanical strength, and a ring-shaped groove extending in the circumferential direction is formed on the outer periphery of each oval tube connection portion. In these grooves, fasteners for fastening the oval tube connection to the inside are mounted.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a direction change drain pipe joint for connecting drain-shaped horizontal pipes having an oval cross section in an internal communication state.More specifically, the present invention can reduce the number of parts required for connection work and the work time, The use of a flexible member having mechanical strength as described above makes it possible to improve the adhesion to each drainage horizontal pipe and eliminate the possibility of drainage leakage. The present invention relates to a direction change drainage pipe joint that can securely connect those pipes even if they are displaced from their positions.

[0002]

[Prior art]

 Conventionally, in drainage systems for buildings and the like, the drainage horizontal pipes arranged on each floor were all circular in cross section, so that the drainage flowing from the toilet into the drainage horizontal pipes was to be circulated vertically. For this reason, the air in the horizontal drainage pipe cannot flow through the inside of the horizontal drainage pipe, and a large fluctuation in air pressure occurs in the horizontal drainage pipe. Therefore, a method has been adopted in which a vent pipe is separately provided in addition to the drain horizontal pipe to allow the air in the horizontal drain pipe to flow smoothly and prevent the drain trap from being opened. However, in this method, the number of pipes is increased, which leads to an increase in pipe space.

In view of this, the present applicant has already proposed in Japanese Patent Application No. 11-221217 a drainage system using a drainage horizontal pipe having an oval cross section in which the upper radius of curvature is larger than the lower radius of curvature. ing. According to the present invention, the use of the drain horizontal pipe having an oval cross section allows the air in the horizontal drain pipe to flow smoothly, thereby preventing the drain trap from being opened. Further, according to the present invention, since there is no need to provide a ventilation pipe, the piping space can be reduced.

[0004] By the way, conventionally, a dedicated pipe joint for connecting the drainage horizontal pipes having an oval cross section has not been proposed, and a pipe joint for changing the direction of the pipe has not been proposed. Was. Conventionally, in order to change the direction of a drainage horizontal pipe with an oval cross section at the connection point, an elbow or vent with a circular cross section and one end can be connected to this elbow or vent via a short pipe and the other end is a cross section Sockets that can be connected to oval drainage horizontal pipes were used, all of which were made of inflexible vinyl chloride.

FIG. 6 is a plan view showing a state in which drainage horizontal pipes having an oval cross section are connected to each other by using these elbows and sockets. The elbow (20) is a conventionally-known circular elbow having a circular cross-section connecting portion (23) which can be externally fitted to one end of a short tube (25) having a circular cross section at both ends. One end of the socket (21) is a circular cross-section connecting portion (26) that can be externally fitted to the other end of the short tube (25) having a circular cross section, and the other end has an oval cross-sectional drainage pipe (22). ) Is an oval cross-section connecting portion (24) that can be fitted outside. At the time of construction, a short pipe (25) is connected to one end of each of the two sockets (21), and ends of these short pipes (25) are connected to both ends of the elbow (20). By connecting the horizontal drain pipe (22) to the outer end, the direction of the horizontal drain pipe (22) was changed.

[0006]

[Problems to be solved by the invention]

 However, the connection method described above requires a total of five members: the elbow (20), the two sockets (21), and the two short tubes (25). Therefore, after connecting these members at the site, the drainage horizontal pipes (22) must be connected to each other. The number of construction steps and the number of parts are large, the workability is poor, and the total length of the connection part is considerably large. It was getting longer. The elbow (20) and the two sockets (21) are each made of a non-flexible material, and the connection with the drain horizontal pipe (22) is made by connecting the outer peripheral surface with a drain horizontal pipe. This was done by externally fitting the oval cross-section connection (24) to the tube (22). Therefore, it cannot be said that the drainage horizontal pipe (22) and the oval cross-section connection part (24) are always in close contact, and there is a manufacturing error or construction error in the drainage horizontal pipe (22) or the socket (21). Alternatively, if the adhesive was applied poorly, the watertightness was insufficient, and there was a danger of drainage leaking from the water during use.

[0007] Further, since each of the drain horizontal pipes (22) is individually piped at the construction site, the axis thereof may be shifted from a desired set position depending on the construction state. However, since the above-mentioned socket (21) and elbow (20) were inflexible and could not be deformed, they could be connected to one drain horizontal pipe (22), but the other drain horizontal pipe (22). There was a fear that the tube (22) could not be connected well.

[0008] The present invention has been made in view of such circumstances, and in a direction changing drain pipe joint for connecting drain-shaped horizontal pipes having an oval cross-section in an internal communication state, the number of parts required for connection construction is reduced. In addition to reducing the construction time, the use of a flexible material with mechanical strength as a material improves the adhesion to each drainage horizontal pipe and eliminates the possibility of drainage leakage. It is another object of the present invention to provide a direction changing drain pipe joint which can securely connect the drain horizontal pipes even if their axial centers are deviated from a desired set position.

[0009]

[Means for Solving the Problems]

 The invention according to claim 1 is a direction changing drainage pipe joint for connecting drainage horizontal pipes having an oval cross section to each other in an internal communication state, and can be externally fitted to an end of one of the drainage horizontal pipes. A first oval tube connection having an oval cross section, a second oval tube connection having an oval cross section which can be externally fitted to the end of the other drainage horizontal pipe, and a position between these oval tube connections; The joint body having a bent tube portion bent at a predetermined angle is formed integrally with a flexible member having mechanical strength, and a ring extending in the circumferential direction is provided on the outer periphery of each oval tube connection portion. A drainage pipe joint for directional change, characterized in that a groove is formed, and a tightening tool for tightening the oval tube connection part inward is attached to these grooves.

The invention according to claim 2 is a direction changing drain pipe joint for connecting drain horizontal pipes having an oval cross section to each other in an internal communication state, and an outer end is provided at one end of one drain horizontal pipe. A first oval tube connection having an oval cross section, a second oval tube connection having an oval cross section which can be externally fitted to the end of the other drainage horizontal pipe, and a connection between these oval tube connections A joint body having a bent tube portion that is located at a predetermined angle and is interposed therebetween is integrally formed of a flexible member having mechanical strength. A ring-shaped groove is formed which extends in the groove, and a tightening tool for tightening the oval tube connection portion inward is attached to these grooves, and the inner periphery of each oval tube connection portion is provided in the circumferential direction thereof. A number of extending ring-shaped ridges are formed, and these ridges are spaced apart from each other in the longitudinal direction of the oval tube connection by a small distance. This is a drainage pipe joint for changing directions, characterized in that it is formed in a vertical direction.

According to a third aspect of the present invention, there is provided a direction changing drainage pipe joint for connecting drainage horizontal pipes having an oval cross section to each other in an internal communication state, wherein an outer end of one of the drainage horizontal pipes is provided. A first oval tube connection having an oval cross section, a second oval tube connection having an oval cross section which can be externally fitted to the end of the other drainage horizontal pipe, and a connection between these oval tube connections A joint body having a bent tube portion that is located at a predetermined angle and is interposed therebetween is integrally formed of a flexible member having mechanical strength. Ring-shaped grooves are formed that extend into the groove, and these grooves are fitted with fasteners for tightening the oval tube connections inward, and each oval tube connection is required for connection with the drainage horizontal pipe. It is a drainage pipe joint for directional change, characterized in that it has a length that is as short as possible. By providing these inventions, the above problems are completely solved.

[0012]

[Embodiment of the invention]

 An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing the drainage joint for direction change according to the present invention. FIG. 2 is a plan view showing the drainage pipe joint. FIG. 3 is a view of the drainage pipe joint as viewed from the second oval pipe connection part side. FIG. 4 is a view of the drainage pipe joint as viewed from the first oval pipe connection part side. FIG. 5 is a sectional view taken along line AA in FIG.

[0013] The direction changing drainage pipe joint (1) according to the present invention includes an end of a first drainage horizontal pipe (2) having an oval cross section and an end of a second drainage horizontal pipe (3) having an oval cross section. This is a direction change drain pipe joint for connecting the and the other in an internal communication state. The drainage joint for direction change (1) is connected between the first oval tube connection (4), the second oval tube connection (5), and these oval tube connections (4) and (5). A joint body (7) having a bent tube portion (6) positioned and bent at a predetermined angle is integrally formed of a flexible member having mechanical strength. Hereinafter, these components will be sequentially described in detail.

The first oval tube connecting portion (4) is a portion connected to the first drain horizontal tube (2), and has an oval cross-section that can be fitted to an end of the first drain horizontal tube (2). And a cylindrical portion. On the other hand, the second oval tube connecting portion (5) is a portion connected to the second drain horizontal tube (3), and has an oval cross section that can be fitted to the end of the second drain horizontal tube (3). It is a cylindrical portion. A ring-shaped groove (8) extending in the circumferential direction is formed on each outer periphery of the first oval tube connection portion (4) and the second oval tube connection portion (5). A fastener (9) for fastening the first oval tube connection (4) and the second oval tube connection (5) to the inside is mounted.

The form of the fastening tool (9) is not particularly limited, but in the illustrated example, a known fastener used for fastening and fixing a tubular body such as a hose is used. The illustrated fastening tool (9) is formed by rolling a metal strip plate (10) having elasticity into a cylindrical shape so that one end side and the other end side are overlapped with each other, and a worm screw (11) provided at the overlapping portion. ) Is rotated to change the inner diameter of the cylindrical body.

Since the first oval tube connection (4) and the second oval tube connection (5) are each formed of a flexible member having mechanical strength, the mechanical strength required as a pipe joint is provided. While being developed, the inward deformation by the fastener (9) becomes possible. Therefore, by reducing the inner diameter of the cylindrical body of the tightening device (9), the inner peripheral surfaces of the first oval tube connection part (4) and the second oval tube connection part (5) are drained by horizontal drainage pipes. (2) and (3) can be pressed against the outer peripheral surface. The type of the flexible member having mechanical strength is not particularly limited as long as it has both the mechanical strength necessary for a pipe joint and the appropriate flexibility. For example, ethylene propylene Various hard synthetic rubbers such as rubber can be used.

Each of the first oval tube connecting portion (4) and the second oval tube connecting portion (5) has a large number of circumferentially extending ring-shaped ridges (12) (see FIG. 5) on the inner periphery thereof. These ridges (12) are formed at the oval tube connection parts (4) and (5) at a very small distance from each other in the longitudinal direction thereof. The ridges (12) are in contact with the outer peripheral surfaces of the horizontal drainage pipes (2) and (3), and tighten the oval tube connection parts (4) and (5) inward with the fasteners (9). As a result, the tip is pressed against the horizontal drain pipes (2) and (3). That is, by providing the ridges (12), it is possible to increase the contact pressure of the oval tube connecting portions (4) and (5) with the drainage horizontal tubes (2) and (3). Also, by providing a large number of the ridges (12) at a small interval from each other, the tightening pressure of the fastener (9) is evenly transmitted to the many ridges (12), and these many ridges (12) are provided. ) Are watertight walls, so that the water can be reliably stopped between the horizontal drain pipes (2) and (3) and the oval pipe connection parts (4) and (5). .

In the illustrated example, there are two grooves (8) formed in the first oval tube connection portion (4) and the second oval tube connection portion (5), respectively. The present invention is not limited to this, and one or both of them may be one or three or more. In this case, it goes without saying that a fastening tool (9) may be mounted in each groove (8). The length of each of the first oval tube connecting portion (4) and the second oval tube connecting portion (5) is preferably as short as possible in terms of manufacturing cost and workability of connection work. A length that allows connection with the drainage horizontal pipes (2) and (3), that is, a length that allows the fastener (9) to be stably mounted is required. The preferred length of the oval tube connecting portions (4) and (5) in the present invention depends on the width and the number of the strips (10) of the fastener (9), but the strip (10) having a width of 12 mm. It has been confirmed by the inventor that a length of about 50 to 100 mm is preferable when using one piece in terms of watertightness and connection stability of the drainage horizontal pipes (2) and (3). .

A bent tube portion (6) is formed between the first oval tube connection (4) and the second oval tube connection (5). The bent tube part (6) constitutes the joint body (7), and has mechanical strength together with the first oval tube connection part (4) and the second oval tube connection part (5). It is integrally formed with a flexible member. Each of the bent tube portions (6) has an egg-shaped opening at both sides thereof, and a portion between the bent portions is bent at a predetermined angle to perform a so-called elbow-like function. The bending angle is not particularly limited, but is 90 degrees in the illustrated example.

Since the bent pipe portion (6) is formed of a flexible member having mechanical strength, it can be relatively flexibly deformed while exhibiting the mechanical strength required for a pipe joint. . Therefore, the axis (α1) of the first oval tube connection (4) (see FIG. 3) and the axis (α2) of the second oval tube connection (5) (see FIG. 4) are respectively set to the initial setting positions. Can be shifted vertically or horizontally. Therefore, when the position of the axis of the first drain horizontal pipe (2) and the axis of the second drain horizontal pipe (3) are displaced from the desired set position, the bent pipe part (6) is displaced by that amount. , The horizontal drain pipes (2) and (3) can be easily and reliably connected to each other.

Next, a method of using the drainage joint (1) for directional change according to the present invention will be described. Now, a first drainage horizontal pipe (2) having an oval cross section is provided at a predetermined height from the floor surface. The first oval tube connection (4) of the direction changing drainage pipe joint (1) is fitted to the end of the first horizontal drainage pipe (2). Next, a second drainage horizontal pipe (3) having an oval cross section is disposed at a predetermined height from the floor surface. At this time, the second drain horizontal pipe (3) is separated from the floor surface by a predetermined height using a frame or a mounting jig (not shown) and forms an angle of, for example, 90 degrees with the first drain horizontal pipe (2). However, the end of the second horizontal drainage pipe (3) may be displaced in the vertical or horizontal direction from the desired location due to manufacturing errors or processing errors. . Here, it is assumed that such a shift has occurred.

Next, the second oval tube connection part (5) of the drainage pipe joint (1) is fitted to the end of the second drainage horizontal pipe (3). At this time, the axis of the second drain horizontal pipe (3) is not on the same plane as the axis of the first drain horizontal pipe (2), and is shifted from the desired set position. By deforming the bent pipe part (6) of the conversion drain pipe joint (1), the second oval pipe connection part (5) can be fitted to the end of the second drain horizontal pipe (3). . Then, at the oval tube connections (4) and (5), the worm screw (11) of the fastener (9) is rotated to move the oval tube connections (4) and (5) inward. tighten. As a result, the oval tube connection parts (4) and (5) adhere to the outer peripheral surfaces of the drainage horizontal pipes (2) and (3). With the above, the connection work between the drainage horizontal pipes (2) and (3) is completed.

[0023]

[Effect of the invention]

 According to the direction-changing drainage pipe joint according to claim 1, since the drainage horizontal pipes having an oval cross section can be connected to each other only by the drainage pipe joint, the joint work is performed by combining five members as in the related art. It is not necessary to perform the work, and the construction time and the number of parts can be reduced. In addition, since each oval tube connecting portion is formed of a flexible member having mechanical strength, it can be deformed inward by the fastener. Thus, the inner peripheral surface of each connection portion can be pressed against the outer peripheral surface of the horizontal drainage pipe by tightening each oval tube connection portion with the fastener. Therefore, the watertightness between the drainage horizontal pipe and the drainage pipe joint is remarkably improved, and leakage of drainage can be reliably prevented. In addition, since the entire joint body is formed of a flexible member having mechanical strength, the positions of the axis of the first drain horizontal pipe and the axis of the second drain horizontal pipe are shifted from the desired set position. In such a case, by deforming the joint body in accordance with the amount of displacement, it is possible to easily and reliably connect both drainage lateral pipes.

According to the second aspect of the present invention, there is no need to perform a joint operation by combining five members as in the related art, and it is possible to reduce the construction time and the number of parts. . Further, the watertightness between the drain horizontal pipe and the drain pipe joint is remarkably improved, and it is possible to reliably prevent drainage from leaking. When the position of the axis of the first drain horizontal tube and the position of the axial center of the second drain horizontal tube are displaced from the desired set position, the joint body is deformed in accordance with the amount of displacement, so that both sides are deformed. It is possible to easily and reliably connect the horizontal drain pipes. Further, by forming a large number of ring-shaped ridges extending in the circumferential direction on the inner periphery of each oval tube connection portion, the contact pressure of the circular tube connection portion with the drain horizontal pipe can be increased. In addition, by forming these ridges at a very small distance from each other in the length direction of the circular pipe connection, the tightening pressure of the fastener is evenly transmitted to many ridges, and the drainage horizontal pipe and the oval shape are formed. Water can be reliably stopped between the pipe connection parts.

According to the drain pipe joint according to the third aspect, there is no need to perform joint work by combining five members as in the related art, and it is possible to reduce the construction time and the number of parts. Further, the watertightness between the drain horizontal pipe and the drain pipe joint is remarkably improved, and it is possible to reliably prevent drainage from leaking. Further, when the position of the axis of the first drain horizontal pipe and the axis of the second drain horizontal pipe are displaced from the desired set position, the joint body is deformed in accordance with the amount of displacement, so that the two joints are deformed. It is possible to easily and reliably connect the horizontal drainage pipes. In addition, by setting the length of each oval tube connection to the length necessary for connection to the drain horizontal pipe, the amount of material used is reduced and the workability of the connection work is improved, The horizontal pipes can be reliably connected to each other.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a direction changing drain pipe joint according to the present invention.

FIG. 2 is a plan view illustrating the direction changing drain pipe joint according to the present invention.

FIG. 3 is a view of the drainage pipe joint according to the present invention as viewed from a second oval pipe connection part side.

FIG. 4 is a view of the drainage pipe joint according to the present invention as viewed from a first oval pipe connection part side.

FIG. 5 is a sectional view taken along line AA in FIG. 2;

FIG. 6 is a plan view showing a conventional connection structure between oval cross-sectional drainage pipes.

[Explanation of symbols]

 1 ... Drain pipe joint for direction change 2 ... First drain horizontal pipe 3 ... Second drain horizontal pipe 4 ... First oval pipe connection part 5 ... ... Second oval tube connection part 6 ... Bend tube part 7 ... Joint body 8 ... Groove 9 ... Clamping tool 12 ... Protrusion

Claims (3)

[Utility model registration claims] 1. A drainage joint for changing directions for connecting drainage horizontal pipes having an oval cross-section to each other in an internal communication state, wherein the oval cross-section can be externally fitted to an end of one of the drainage horizontal pipes. A first oval tube connecting portion, a second oval tube connecting portion having an oval cross section that can be fitted to the end of the other drainage horizontal tube, and a predetermined angle between the oval tube connecting portions. A joint body having a bent tube portion is integrally formed with a flexible member having mechanical strength, and a ring-shaped groove extending in the circumferential direction is formed on the outer periphery of each oval tube connection portion. A drainage pipe joint for directional change, wherein a tightening tool for tightening the oval tube connection portion to the inside is attached to these grooves. 2. A drainage pipe joint for changing the direction of connecting drainage horizontal pipes having an oval cross-section to each other in an internal communication state, wherein the oval cross-section can be externally fitted to an end of one of the drainage horizontal pipes. A first oval tube connecting portion, a second oval tube connecting portion having an oval cross section that can be fitted to the end of the other drainage horizontal tube, and a predetermined angle between the oval tube connecting portions. A joint body having a bent tube portion is integrally formed with a flexible member having mechanical strength, and a ring-shaped groove extending in the circumferential direction is formed on the outer periphery of each oval tube connection portion. These grooves are fitted with fasteners for tightening the oval tube connections inwardly, and the inner periphery of each oval tube connection has a number of ring-shaped ridges extending in the circumferential direction. These ridges are formed at a very small distance from each other in the longitudinal direction of the oval tube connection. Direction changing drainage pipe fittings to. 3. A drainage joint for changing directions for connecting drainage horizontal pipes having an oval cross-section to each other in an internal communication state, wherein the oval cross-section can be externally fitted to an end of one of the drainage horizontal pipes. A first oval tube connecting portion, a second oval tube connecting portion having an oval cross section that can be fitted to the end of the other drainage horizontal tube, and a predetermined angle between the oval tube connecting portions. A joint body having a bent tube portion is integrally formed with a flexible member having mechanical strength, and a ring-shaped groove extending in the circumferential direction is formed on the outer periphery of each oval tube connection portion. The grooves are fitted with fasteners for tightening the oval tube connection portions inward, and each oval tube connection portion has a length necessary for connection with the drainage horizontal tube. A drain pipe joint for directional change, characterized in that: