JP3005417U - Flexible universal joint for drainage pipe - Google Patents

Abstract

(57) [Abstract] [Purpose] The drainage pipe at the bent part is easy to install, and it has excellent strength and flexibility,
(EN) Provided is a flexible universal joint for a drainage pipe, which has a smooth inner surface and is free from the possibility of clogging with impurities in the drainage. [Structure] The flexible universal joint 1 of the drainage pipe according to the present invention comprises:
The outer tube 2 is composed of a flexible tube made of hard synthetic resin,
An inner tube 3 made of a soft synthetic resin and having an inner surface 3a formed smoothly is integrally arranged in the outer tube 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a flexible universal joint for drainage pipes, and more particularly, to a flexible universal joint that is flexible and has good shape retention despite being flexible, and can smoothly maintain the flow of contaminants during drainage. The present invention relates to a flexible universal joint for a drainage pipe, which has features such as preventing clogging.

[0002]

[Prior art]

 Conventionally, most drain pipes of drainage pipes or drainage pipes of drainage pipes and connecting pipes for connecting drainage pipes are usually made of rigid hard plastic pipes or metal pipes. Rarely, flexible pipes made of bellows-shaped plastic pipes are used in the bendable pipe construction area.

[0003]

[Problems to be solved by the device]

 However, in the case of connecting pipes made of hard plastic pipes or metal pipes, when the pipes are straight, there is no problem to the left, but depending on the conditions of the facility, it is often necessary to use bent pipes. In such cases, most of the bending joints are used, so the connecting work is complicated, and the connecting work in a narrow space is very difficult.

Further, the flexible pipe made of the bellows-like plastic pipe has flexibility, but has a problem that the strength and shape retention are insufficient and the service life is short. However, since a large number of ridges and valleys are formed on the inner surface of the connecting pipe so as to cross the flow direction of the drainage, it is difficult for impurities in the drainage to flow smoothly, which causes a serious problem that the drainage pipe is clogged.

The present invention has been researched and developed with the object of solving the above-mentioned problems, and it is easy to construct a drainage pipe in a bent portion, and it has excellent strength and is a flexible pipe. Despite the above, an object of the present invention is to provide a flexible universal joint for a drainage pipe in which the inner surface of the pipe is smooth and foreign substances in the drainage are not likely to be clogged.

[0006]

[Means for Solving the Problems]

 As a means for solving the above problems and achieving the object, the present invention is characterized in that the inner surface of a flexible pipe made of a hard synthetic resin is made smooth by a soft synthetic resin, and the drainage pipe is flexible. A universal joint is provided.

Further, as a more specific means, the present invention comprises an outer tube made of a flexible tube made of a hard synthetic resin, and a smooth inner surface made of a soft synthetic resin in the outer tube. It is intended to provide a flexible universal joint for a drainage pipe, which is configured by integrally disposing an inner pipe.

Further, as a more specific means, the present invention uses, as a raw material, a single spiral-shaped strip made of hard synthetic resin, which is continuously provided with bent side edges for engagement on both sides, An outer pipe made of a flexible pipe is constructed by continuously engaging one side of the engaging bending edge of the mating strip with the engaging side of the other side, and the outer tube is made of a soft synthetic resin. The present invention provides a flexible universal joint for a drainage pipe, characterized in that an inner pipe having a smooth inner surface is integrally arranged.

Further, as a more specific means, the present invention provides a drainage pipe having a flexible universal joint for a drainage pipe configured as described above, in which connection pipes to the drainage pipe are fitted at both ends of the joint. The flexible universal joint is provided.

[0010]

[Action]

 The flexible universal joint 1 of the drainage pipe according to the present invention configured as described above has a drainage port c of a waterproof pan b for a washing machine installed on the upper surface of a floor a as shown in FIG. , A toilet bowl e installed on the upper surface of the floor a as a joint for connection with a drain pipe d which is fixed at a position slightly lower than the drain port c, or as shown in FIG. It is used as a joint for connecting the drainage port f of the drainage pipe d and the drainage pipe d that is eccentrically fixed to the lower side of the drainage port f. Therefore, even if the connection portion is deviated as described above, there is an effect that the joint can be easily and easily bent to perform connection work.

Further, since this joint is made of a hard synthetic resin, it has excellent strength and shape retention. Further, since the inner surface of the outer tube is made of a soft synthetic resin smoothly, the outer tube The flexibility of the drainage pipe is not adversely affected, and contaminants such as small pieces of cloth and used paper pieces that are being drained do not stay in the joint and become clogged. It has the function of keeping

[0012]

【Example】

 An embodiment of the present invention will be described below with reference to the accompanying drawings. A drain pipe flexible universal joint 1 according to the present invention includes an outer pipe 2 and an outer pipe 2 as shown in FIGS. It is composed of a flexible pipe of a required dimension consisting of an inner pipe 3 which is integrally arranged in the pipe 2 and for connecting a joint to a drain port of a required drain and a drain pipe at both ends thereof. The short connecting pipes 4 and 4 are fitted.

Thus, in this embodiment, the outer tube 2 is provided with a downward hook-shaped engaging bent edge 2a continuously on one side and an upward hook-shaped engaging bent edge 2a on the other side. A single spiral narrow strip 2c having a sectional shape shown in the figure and made of a hard synthetic resin (hard vinyl chloride) continuously provided with 2b is used as a material, It is composed of a rigid flexible tube formed by continuously engaging the downward hook-shaped engaging bent edge 2a on one side and the upward hook-shaped engaging bent edge 2b on the other side. ..

In this embodiment, the inner tube 3 is made of a soft synthetic resin (soft vinyl chloride) and has an outer diameter substantially the same as the inner diameter of the outer tube 2 and a length of the outer tube 1. It is composed of a flexible tubular body having the same length and a smooth inner surface 3a.

Then, the inner pipe 3 configured as described above is integrally disposed in the outer pipe 2 configured as described above. In this embodiment, an extrusion molding machine (not shown) is used. ) Is wound around the outer peripheral surface of the inner tube 3 extruded from an extrusion molding machine (not shown) in a spiral shape while using the above-mentioned engaging means. It is formed into a tubular body and fitted into the inner pipe 3, and both pipes 2 and 3 are integrally fitted.

The fitting structure (means) for fitting the outer tube 2 and the inner tube 3 is not limited to the above embodiment, but the outer tube 2 and the inner tube 3 are formed in advance and the outer tube is formed. The inner tube 3 may be inserted into the inside 2 and integrally fitted with an adhesive.

Further, the connecting pipe 4 has a ring groove 4a having a required depth on the inner end side and a stepped wall portion 4b having a required depth on the inner surface on the outer end side. The ring grooves 4a and 4a of the connecting pipes 4 and 4 are integrally formed on both ends of the fitting structure of the outer pipe 2 and the inner pipe 3 with an adhesive agent. It is fitted to form the flexible universal joint 1 of the drainage pipe according to the present invention.

As shown in FIG. 2, the flexible universal joint 1 configured as described above has step walls 4b, 4b on the outer end sides of the connecting pipes 4, 4 at both ends thereof, One drainage pipe d (or drainage port) to be connected and the other drainage pipe d are inserted and firmly joined to each other. Both drainage pipes to be connected or drainage pipes and drainage pipes are used. As shown in FIGS. 4 and 5, the positional relationship of the joint has an advantage that it can be bent and connected reliably and easily by utilizing the flexibility of the joint even if it is deviated from a straight line.

Further, unlike the conventional flexible pipe having a bellows structure, this joint 1 is excellent in strength and shape retention, so that it has the features of being robust and having a long service life, and the outer pipe 2 Since the inner side of the outer tube 2 is made up of a flexible inner tube 3 having a smooth inner surface 3a, the flexibility of the outer tube 2 is not adversely affected, and a small piece of cloth in drainage, used cloth There is an advantage that foreign matters such as paper pieces do not stay in the joint part and become clogged, and the drainage action of the drainage pipe can be maintained smoothly.

The main embodiments of the present invention have been described above, but the present invention is not limited to these embodiments, and various modifications can be made within the scope that the object of the invention can be achieved and the gist of the invention is not deviated. It is natural that the design of can be changed.

[0021]

[Effect of device]

 The present invention relates to a flexible universal joint for drainage pipes, characterized in that the inner surface of a flexible pipe made of hard synthetic resin is made smooth by soft synthetic resin. Even if the drainage pipe and the drainage pipe or the drainage pipe and the drainage pipe are not in a straight line and deviated from each other, the flexibility can be utilized to reliably and easily bend and connect.

Further, the flexible pipe forming the outer pipe is made of a hard synthetic resin and is excellent in strength and shape retention, so that it has the features of being robust and having a long service life, and the inner surface of the joint is Since it is made of soft synthetic resin smoothly, it does not adversely affect the flexibility of the joint, and small pieces of cloth, used paper, and other contaminants in the drainage stay in the joint. The drainage function of the drainage pipe can be smoothly maintained without being clogged.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a partially omitted vertical front view showing a state in which drain pipes are connected to both ends.

FIG. 3 is a partially enlarged view of FIG.

FIG. 4 is an explanatory diagram showing an example of a joint in use.

FIG. 5 is an explanatory diagram showing another example of a usage state of the joint.

[Explanation of symbols]

 1 Drain pipe flexible universal joint 2 Outer pipe 2a Downward hook-shaped engaging bent edge 2b Upward hook-shaped engaging bent edge 2c Spiral strip 3 Inner pipe 3a Inner pipe inner surface 4 Connection pipe 4a Ring groove 4b Step wall

Claims (4)

[Scope of utility model registration request] 1. A flexible universal joint for a drainage pipe, wherein an inner surface of a flexible pipe made of hard synthetic resin is made smooth by soft synthetic resin. 2. An outer tube is formed by a flexible tube made of a hard synthetic resin, and an inner tube made of a soft synthetic resin and having a smooth inner surface is integrally arranged inside the outer tube. A flexible universal joint for drainage pipes. 3. A single spiral-shaped strip made of hard synthetic resin, which is continuously provided with engaging bent edges on both sides, is used as a material, and one side of each adjacent strip is engaged. An inner pipe having a smooth inner surface made of a soft synthetic resin is formed in the outer pipe by constructing an outer pipe made of a flexible pipe by continuously engaging the bent edge with the engaging bending edge on the other side. A flexible universal joint for a drainage pipe, characterized in that 4. The flexible universal joint for a drain pipe according to claim 1, wherein connecting pipes for connecting to the drain pipe are fitted on both ends of the universal joint.