JPH068481U - Sewage pipe cleaner - Google Patents

Abstract

(57) [Abstract] [Purpose] Simplifies the joint structure of the metal flange member and the synthetic resin cylinder member that compose the main body of the cleaning device for the dirty water pipe, and also enhances the joint strength and further reduces the overall weight. . [Structure] Lid fitting hole 1 in metal flange member 14
A plurality of leg pieces 16 are formed in the lower part of the inner peripheral surface of No. 3 by providing a space in the circumferential direction and bending them outward at a slight angle.
By press-fitting the tubular member 15 into a recess 17 formed in the upper end portion of the synthetic resin tubular member 15 in the axial direction in a softened state in which the tubular member 15 is expanded in the radial direction by heating, and the flange member 14 and the tubular member. Both 15 are integrally connected.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cleaning mouthpiece for a dirty water pipe.

[0002]

[Prior art]

 The sewage pipes that are piped under the floor are partly opened on the floor as a cleaning port.However, while the sewage pipes are generally made of synthetic resin, they are exposed on the floor. The material of the cleaning port is made of metal to withstand the load of stepping on it. By the way, when connecting the synthetic resin wastewater pipe and the metal cleaning port material by simply joining the opposing peripheral surfaces of both with an adhesive, sufficient bonding strength can be obtained because the materials are different. Therefore, conventionally, as shown in FIG. 5, the main body 1 of the cleaning tool is composed of a cylindrical member 2 made of synthetic resin and a flange member 3 made of metal which are tapered so that the outer circumference is gradually reduced downward. The cylindrical member 4 of the cleaning member is formed separately, and is connected to the cylindrical member 2 by means described later, and the cylindrical member 2 of the cleaning tool body 1 is inserted into the dirty water pipe 5. The two 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 the screws formed on the opposed circumferential surfaces of the cylinder member 2 and the cylinder body 4 (actual Kosho Sho). 55-31109), or a configuration in which circumferential and axial grooves are formed on the outer periphery of the tubular body 4 and the tubular body 4 is integrally joined by being inserted when the tubular member 2 made of synthetic resin is formed (actually). Japanese Patent Publication No. 60-15813) has been adopted.

[0004]

[Problems to be solved by the device]

 However, in the case of Japanese Utility Model Publication No. 55-31109, it is necessary to form screws on the facing peripheral surfaces of the cylindrical member 2 made of synthetic resin and the metallic cylindrical member 4 provided on the flange member 3, respectively. Not only is it troublesome, but during long-term use, the tubular body 4 rotates together when the lid plate (eye plate) 7 that is screwed to the flange member 3 is loosened due to loosening of the screw connection part. Therefore, it has a harmful effect of separating from the tubular member 2. According to Japanese Utility Model Publication No. 60-15813, when the synthetic resin cylindrical member 2 is molded, the cylindrical body 4 provided on the flange member 3 is held in the mold of the molding machine and inserted. Molding means and operation are complicated and complicated, and high precision is required for each part, which is expensive. In addition, in the above-mentioned conventional example, since the metal cylindrical body 4 to be coupled to the cylindrical member 2 is provided on the entire circumference of the flange member 3, the weight of the cleaning tool main body 1 is increased.

The present invention has been made in view of the above circumstances, and it is possible to increase the bonding strength of the metal flange member and the synthetic resin cylindrical member despite the simplification of the connecting structure, and to make the overall weight lightweight. Is an issue.

[0006]

[Means for Solving the Problems]

 That is, the present invention relates to 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 having a lid fitting hole, wherein the metal flange member is A plurality of leg pieces are formed in the lower part of the inner peripheral surface of the lid fitting hole in the circumferential direction, and are bent at a slight angle outward with respect to a reference line parallel to the axial direction. A cylindrical member made of synthetic resin is provided with a recess in the upper end thereof into which the leg pieces are inserted in the axial direction. It is characterized in that the flange member and the tubular member are integrally connected by press-fitting the pieces.

[0007]

[Action]

 The cleaning device of the present invention is used by inserting and adhering a synthetic resin tubular member joined to a flange member into a waste water pipe. Therefore, the leg pieces formed on the flange member are circumferentially spaced. Since it is tightened and bent outward at a slight angle with respect to the reference line parallel to the axis, it is firmly connected not only to the circumferential direction but also to the axial direction to the tubular member, and the two are separated. There is nothing.

[0008]

【Example】

 The present invention will be described below with reference to the embodiments shown in the drawings.

In FIG. 1, reference numeral 11 denotes a main body of a cleaning mouthpiece which is inserted into a mouth portion 12 ′ opened on the floor surface (a) of a synthetic resin wastewater pipe 12, and the main body 11 is shown in FIGS. As shown in FIG. 3, since it is formed by a metal flange member 14 provided with a lid fitting hole 13, and a synthetic resin cylindrical member 15 formed in a taper shape whose outer diameter is gradually reduced downward. is there. 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. The cylindrical member 15 is formed to be bent at an angle θ of about 3 degrees, and the cylindrical member 15 is further provided with a concave portion 17 at the upper end thereof for inserting the leg pieces 16 in the axial direction. In consideration of the degree of expansion of the tubular member 15 in the radial expansion direction due to heating, the reference numeral 17 indicates a position from which the end portions 16a of the leg pieces 16 correspond vertically downward, as shown by the chain line in FIG. Each of the recesses 17 is provided with a shaft slightly closer to the shaft, and a chamfer 17a is provided at the mouth of each of the recesses 17. The lid fitting hole 13 may be provided with a screw (not shown) for screwing the lid.

The flange member 14 and the tubular member 15 are softened by appropriately heating the tubular member and are expanded in the diameter expanding direction so that the end portions 16 a of the leg pieces 16 are located vertically above the recesses 17. When the legs are made to substantially correspond to each other, the leg pieces are press-fitted into the recesses, and if necessary, the outer periphery of the tubular member 15 is tightened by a band for correction (not shown) to cool and solidify the tubular member for cleaning. The mouthpiece body 11 is formed. However, the main body 11 of the cleaning device is joined by applying an adhesive (b) to the outer peripheral surface of the cylindrical member 15 having a tapered shape and inserting it in the waste water pipe 12 densely.

The cleaning tool body 11 according to the above-described embodiment is formed by circumferentially spacing the leg pieces 16 of the flange member 14 that are press-fitted into the recesses 17 of the synthetic resin tubular member 15. In addition, since it is bent outward with respect to the reference line X parallel to the axis, 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 joined 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. The straight tube portion 24a may be provided below the lid fitting hole 23 so that the leg pieces 26 extend downward from the straight tube portion. In this case, the tubular member 25 is provided with a stepped surface 25a in contact with the lower surface of the straight tubular portion 24a by cutting the upper end portion of the inner circumference including the recess 27 into an L shape.

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

[0014]

[Effect of device]

 As is clear 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 in the circumferential direction of the flange member, and each leg is bent slightly outward. Therefore, the metal flange member and the synthetic resin cylinder member are firmly coupled in the circumferential direction and the axial direction, and more than one leg piece press-fitted into the recess is sufficient. Compared to the conventional example in which a tubular body that is joined to a synthetic resin tubular member is formed around the entire circumference of the flange member, less metal material is used, which is lighter and cheaper, and screws and grooves that are troublesome to process are used. Unlike providing it, 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 Cleaning mouthpiece body 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.