JPH0738438Y2 - Sewage pipe cleaner - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning mouthpiece for a dirty water pipe.

[0002]

2. Description of the Related Art Sewage pipes that are piped under the floor are partly opened on the floor as a cleaning port, whereas the above-mentioned wastewater pipes are generally made of synthetic resin. A metal material is used for the member of the cleaning port exposed on the floor so as to withstand the load when stepping on it.
By the way, when connecting the synthetic resin wastewater pipe and the metal cleaning port member, simply bonding the opposing peripheral surfaces of both members with an adhesive does not provide sufficient bonding strength due to the difference in materials. Therefore, conventionally, as shown in FIG. 5, the cleaning tool body 1 is divided into a cylindrical member 2 made of a synthetic resin and a flange member 3 made of metal which are tapered so that the outer circumference is gradually reduced downward. At the same time, the tubular body 4 provided on the flange member 3 is configured to be joined to the tubular member 2 by means described later,
The cylindrical member 2 of the cleaning tool body 1 is inserted into the dirty water pipe 5 so that they are connected by the adhesive 6. Reference numeral 7 denotes a cover plate fitted to the flange member. However,
The synthetic resin cylinder member 2 and the metal cylinder body 4 provided on the flange member 3 are coupled to each other by screws formed on the opposing circumferential surfaces of the cylinder member 2 and the cylinder body 4 (Actual Publication 55).
No. 31109), or a groove formed in the circumferential and axial directions on the outer periphery of the tubular body 4 and the tubular body 4 is integrally joined by being inserted when the synthetic resin tubular member 2 is formed (Actual Publication No. Sho 60). No. 15813) is adopted.

[0004]

However, according to Japanese Utility Model Publication No. Sho 55-31109, a screw is provided on the opposed peripheral surface of the metal cylindrical body 4 provided on the synthetic resin cylindrical member 2 and the flange member 3, respectively. Not only is it difficult to process because it needs to be formed, but also during long-term use, when the lid plate (eye plate) 7 that is screwed into the flange member 3 due to looseness at the screw connection part is removed. In addition, the cylindrical body 4 has a harmful effect of being rotated together and separated from the cylindrical member 2. Also, the actual public sho-60-60
According to No. 813, since the cylindrical body 4 provided on the flange member 3 is held and inserted in the mold of the molding machine when the synthetic resin cylindrical member 2 is molded, the molding means and operation are complicated, In addition, it is troublesome, and high precision is required for each part, which is expensive. In addition, in the conventional example described above, since the metal tubular body 4 to be coupled to the tubular member 2 is provided on the entire circumference of the flange member 3, the weight of the cleaning tool body 1 is increased.

The present invention has been made in view of the above circumstances, and it is possible to increase the strength of the connection while simplifying the connection structure of the metal flange member and the synthetic resin cylinder member, and to make the overall weight lightweight. It is an issue.

[0006]

SUMMARY OF THE INVENTION That is, the present invention relates to a cleaning mouthpiece in which a synthetic resin tubular member to be inserted into a wastewater pipe is joined to the lower portion of a metal flange member having a lid fitting hole. The metal flange member has a plurality of leg pieces circumferentially spaced below the inner peripheral surface of the lid fitting hole, and has a slight angle outward with respect to the reference line parallel to the axial direction. A bent state is formed by bending the synthetic resin cylindrical member in the axial direction to insert the above-mentioned leg pieces into the cylindrical member, and the cylindrical member is expanded in the radial direction by heating. As a result, the flange member and the tubular member are integrally connected by press-fitting the leg pieces into the recess.

[0007]

In the cleaning device of the present invention, the synthetic resin cylindrical member joined to the flange member is used by inserting and adhering it into the waste water pipe. Therefore, the leg pieces formed on the flange member are
Since a space is provided in the circumferential direction and it is bent outward at a slight angle with respect to the reference line parallel to the axis, it is firmly and integrally connected to the tubular member not only in the circumferential direction but also in the axial direction. So the two never separate.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings.

In the figure, 11 is a synthetic resin wastewater pipe 12.
Is a main body of a cleaning mouthpiece which is inserted into a mouth 12 'opened on the floor surface (a) of the main body 11, and the main body 11 is made of metal having a lid fitting hole 13 as shown in FIGS. Flange member 14
And a cylindrical member 15 made of synthetic resin, which is formed in a tapered shape with the outer diameter gradually decreasing downward. However, in the flange member 14, a plurality of (four in the illustrated example) leg pieces 16 are arranged at equal intervals in the lower portion of the lid fitting hole 13, and are outwardly with respect to the reference line X parallel to the axis. Each of them is formed to be bent at an angle θ of about 3 degrees, and the cylindrical member 15 has a recess 17 into which the leg pieces 16 are inserted at the upper end.
Is formed in the axial direction.
In consideration of the degree to which the tubular member 15 expands in the radial expansion direction due to heating, as shown by the chain line in FIG. 2, the end portions 16a of the leg pieces 16 respectively extend from the position corresponding to the vertically downward direction. The core is provided at a position slightly closer to the armature, and the opening of each of the recesses 17 is chamfered 17a. The lid fitting hole 13 may be provided with a screw (not shown) for screwing the lid.

Then, the flange member 14 and the tubular member 15
Means that when the tubular member is softened by appropriately heating and expanded in the diameter expanding direction, and the end portions 16a of the leg pieces 16 are made to substantially correspond to the upper portions in the vertical direction of the respective concave portions 17, the cylindrical members are inserted into the concave portions. The leg member is press-fitted, and if necessary, the outer periphery of the tubular member 15 is tightened with a band for correction (not shown) to cool and solidify the tubular member to form the cleaning device body 11. However, the main body 11 of the cleaning device is joined by applying an adhesive (b) to the outer peripheral surface of the tapered cylindrical member 15 and tightly inserting it into the dirty water pipe 12.

The cleaning mouthpiece body 11 according to the above-mentioned embodiment configuration
Is formed with leg pieces 16 of the flange member 14 press-fitted into the respective recesses 17 of the synthetic resin tubular member 15 at intervals in the circumferential direction, and is outside the reference line X parallel to the axis. Since it is bent toward one side, the flange member 14 and the tubular member 15 are firmly coupled in the circumferential direction and the axial direction and are not separated. Further, since both of the above are connected by inserting a plurality of leg pieces into the recesses 17, the amount of metal material used in the flange member is reduced and the overall weight can be reduced.

In the above description of the embodiment, the leg pieces 16 are formed directly on the lower surface of the flange member 14, but as shown in FIG. A straight cylindrical portion 24a is provided below the lid fitting hole 23.
Alternatively, the leg pieces 26 may be provided so as to extend downward from the straight cylindrical portion. In this case, the tubular member 2
Reference numeral 5 denotes a step surface 25a which is in contact with the lower surface of the straight cylindrical portion 24a by cutting the upper end of the inner circumference including the recess 27 into an L shape.
Is provided.

FIG. 4 shows another embodiment in which a flange 34b having an upper portion as a lid fitting hole 33 on the inner peripheral surface of a straight cylindrical portion 34a formed by forming the flange member 34 into an L-shaped cross section. The leg piece 36 is formed below the extension of the straight cylindrical portion 34a, as in the case of FIG. In this case, the tubular member 35 has a stepped surface 3 formed by cutting the upper end of the inner circumferential groove including the recess 37 into an L shape.
5a is in contact with the lower surfaces of the straight cylindrical portion 34a and the projecting edge 34b.

[0014]

As is apparent from the above description, according to the present invention, a plurality of leg pieces press-fitted into the concave portion of the tubular member are spaced apart from each other in the circumferential direction of the flange member, and are respectively outwardly directed. Since it is bent at a slight angle, the metal flange member and the synthetic resin cylinder member are firmly joined in the circumferential direction and the axial direction, and moreover, there are a plurality of leg pieces press-fitted into the recess. Since it is sufficient, compared to the conventional example in which a cylindrical body that is connected to a synthetic resin cylindrical member is formed around the entire circumference of the flange member, less metal material is required, which is lighter and cheaper, and a screw that is troublesome to process. Unlike providing grooves and grooves, the structure is simplified.

[Brief description of drawings]

FIG. 1 is a cutaway side view of a main part of a cleaning device according to the present invention.

FIG. 2 is an exploded side sectional view of FIG.

FIG. 3 is a cutaway side view of a cleaning device according to another embodiment.

FIG. 4 is a cutaway side view of a cleaning device according to another embodiment.

FIG. 5 is a sectional view of a conventional example.

[Explanation of symbols]

 11 Main body of cleaning device 12 Sewage pipe 13, 23, 33 Lid fitting hole 14, 24, 34 Metal flange member 15, 25, 35 Synthetic resin tubular member 17, 27, 37 Recess

Claims (1)

[Scope of utility model registration request] 1. A cleaning mouthpiece in which a synthetic resin tube member to be inserted into a wastewater pipe is connected to a lower portion of a metal flange member provided with a lid fitting hole, wherein the metal flange member has a lid. A plurality of leg pieces are formed in the lower portion of the inner peripheral surface of the fitting hole in the circumferential direction, and each leg is bent outward at a slight angle with respect to a reference line parallel to the axial direction. A resin cylindrical member is provided with a recess in the upper end thereof into which the leg pieces are inserted in the axial direction, and the leg member is placed in the recessed portion in a softened state in which the cylinder member is expanded in the radial direction by heating. A cleaning port tool for a dirty water pipe, characterized in that the flange member and the tubular member are integrally connected by press fitting.