JPH045586Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a connecting device for connecting a drain pipe of a water tank such as a sink or a washstand to a sewage pipe.

(Prior art) Conventionally, the lower end of a drain pipe that hangs down from a water tank such as a sink or washstand is inserted into the upright part of a sewage pipe drawn from outside the house to connect the drain pipe and the sewage pipe.
In order to prevent the rise of odor and moisture from the sewer pipe, it is known to provide a seal between the sewer pipe and the drain pipe by attaching a sealing means to the connection.

The means of sealing the connection between the sewer pipe and the drain pipe are:
For example, as shown in FIG. 7, the small-diameter lower half 1a of the connecting pipe 1 made of an elastic sealing material such as rubber is tightly inserted into the sewer pipe 2, and the drain pipe is inserted into the large-diameter upper half 1b. Connect the sewer pipe and the drain pipe by tightly inserting the lower end of the connecting pipe 1.
This prevents odors and moisture from rising. However, such a connection using a connecting pipe has the disadvantage that the connecting pipe 1 easily comes off from the sewer pipe 2, and also has the inconvenience of having to prepare a connecting pipe 1 for each different diameter of the sewer pipe 2.

FIG. 8 shows another conventional example, which consists of a thick-walled cylindrical connecting pipe 4 made of an elastic sealing material such as rubber. 2. Open the annular slit 5 toward the
The sewer pipe 2 is inserted into the slit 5 from below. Such a connecting pipe 4
By using the slit 5, it is possible to accommodate differences in the diameter of the sewer pipe 2 and eliminate the drawbacks shown in Fig. 7, but since the width of the slit 5 is fixed, the wall thickness of the sewer pipe 2 is thin. In this case, there was a problem that a gap was created between the slit 5 and the sewer pipe 2, making it impossible to prevent odor and moisture from rising.

(Problems that the invention aims to solve) This invention eliminates the drawbacks of conventional drainage pipe and sewer pipe connection devices, and ensures a secure connection regardless of the difference in the diameter or wall thickness of the sewer pipe. ensure that, and
The purpose is to reliably seal the space between the drain pipe and the sewage pipe at the connection part to prevent odor and moisture from rising.

(Means for Solving the Problems) In order to solve the above problems, the means adopted by this invention is a connecting member 10 between a sewer pipe and a drain pipe formed of an elastic sealing material such as rubber. , an outer cylinder 11 that is inserted into the outside of the sewer pipe and an inner cylinder 12 that is located concentrically with the outer cylinder 11 and into which the drain pipe is inserted from above are connected at the upper end by a flat plate part 13, and the outer cylinder It is characterized in that a sealing plate 14 extending toward the inner cylinder 12 is formed on the inner circumferential surface of the cylinder 11 .

(Function) By inserting the outer cylinder into the sewer pipe, the sealing plate is bent by the sewer pipe and comes into elastic contact, sealing the gap. A reliable seal is achieved. Furthermore, by inserting the drain pipe into the inner cylinder, the lower end of the inner cylinder elastically comes into close contact with the outer peripheral surface of the drain pipe, thereby sealing the gap. As the drain pipe rises, the central portion of the inner cylinder swells outward and the diameter expansion of the lower end is suppressed, creating a resistance force against the drain pipe coming off.

(Effects of the invention) According to this invention, regardless of the diameter or wall thickness of the sewer pipe or drain pipe, it is possible to ensure sealing performance, prevent the rise of odor and moisture, etc.
This prevents the drain pipe from coming off and maintains a stable connection.

(Embodiment) A preferred embodiment of this invention will be described below with reference to FIGS. 1 to 6. In the figure, reference numeral 10 denotes a connecting member according to this invention, which is integrally formed of an elastic sealing material such as rubber or soft plastic. The connecting member 10 has a substantially cylindrical outer cylinder 11 located concentrically.
The outer cylinder 11 and the inner cylinder 12 are integrally connected at the upper end by a flat plate part 13, and the outer cylinder 11 and the flat plate part 13 are formed thicker than the inner cylinder 12 and have desired strength. The inner cylinder 12 has a shape that extends vertically and gradually decreases in diameter at the lower part. Between the outer cylinder 11 and the inner cylinder 12, there are three sealing plates 14 extending horizontally from the inner circumferential surface of the outer cylinder 11 toward the inner cylinder 12 at intervals vertically.
Formed individually. The sealing plate 14 ends with a slight gap between it and the inner cylinder 12, and the lowermost sealing plate 14c is slightly longer than the other two sealing plates 14a and 14b. short. The lower end of the outer cylinder 11 is formed into a guide hem 15 that is slightly curved outward.

A cut groove 16 is formed around the lower part of the inner cylinder 12 at a position slightly above the lower end, and the lower part can be removed in a ring shape by cutting with the cut groove 16. By cutting, since the inner cylinder 12 is barrel-shaped, the diameter of the lower end can be substantially expanded slightly.

For connection, the upper end of the drain pipe 2 is inserted between the outer cylinder 11 and the inner cylinder 12, the connecting member 10 is inserted, and then the drain pipe 3 is inserted into the inner cylinder 12 from above. As shown in FIGS. 3 and 4, when the sewer pipe 2 is inserted, the sealing plate 14 is bent upward, and its tip elastically comes into close contact with the outer peripheral surface of the sewer pipe 2, and the outer cylinder 11 and the sewer pipe 2. At this time, when the sewer pipe 2 is a small diameter pipe of 48 m/m, as shown in FIG. In close contact. In addition, in the case of a large diameter pipe of 60 m/m, the lowermost sealing plate 14c is bent and brought into close contact with the pipe, as shown in FIG. In this case as well, it goes without saying that the connecting member 10 may be pushed in while also bending the two upper sealing plates 14a and 14b.

The drain pipe 3 inserted into the inner cylinder 12 has a shape in which the lower part of the inner cylinder 12 is slightly reduced in diameter, so that the lower end elastically comes into close contact with the outer peripheral surface of the drain pipe 3, and the drain pipe 3 and the inner cylinder 12 are tightly connected. In addition to reliably sealing the drain pipe 3,
When the inner cylinder 12 rises, the central part of the inner cylinder 12 expands outward and acts to reduce the diameter of the lower end of the inner cylinder 12 inward, creating a resistance force against the drain pipe 3 coming out upwards. However, the effect of suppressing the drainage pipe 3 from coming off is produced. When the diameter of the drain pipe 3 to be inserted is large, the diameter of the lower end of the inner cylinder 12 is expanded by cutting it in the cut groove 16 and removing the lower part (the fourth
(see figure). Since the lower end of the outer cylinder 11 is formed into a guide hem 15 that is curved outward, when it is inserted into the sewer pipe 2, the guide hem 15 serves as a guide for insertion into the sewer pipe. This makes insertion and installation easier.

It is not necessary to form three sealing plates 14 as shown in the figure, and the required elastic sealing effect can be achieved with just one sealing plate.

[Brief explanation of the drawing]

Fig. 1 is a vertical perspective view of the connecting member according to this invention, Fig. 2 is a side view showing the connected state, and Fig. 3 and 4
The figure is an enlarged sectional view showing the connected state, Fig. 5 is an enlarged sectional view of a part, Fig. 6 is a perspective view of the ring section cut out from the lower part of the inner cylinder, and Figs. 7 and 8 are longitudinal sectional views showing the conventional example. It is. 2... Sewage pipe, 3... Drain pipe, 10... Connecting member, 11... Outer tube, 12... Inner tube, 13... Flat plate part, 14... Closing plate, 15... Guide bottom part ,1
6... Cut groove.

Claims (1)

[Claims for Utility Model Registration] (1) A connecting member 10 between a sewer pipe and a drain pipe formed of an elastic sealing material such as rubber, which includes an outer cylinder 11 inserted on the outside of the sewer pipe and a connecting member 10 formed of an elastic sealing material such as rubber. The outer cylinder 11 and the inner cylinder 12, which is located concentrically and into which a drain pipe is inserted from above, are connected at the upper end by a flat plate part 13, and a seal is provided on the inner circumferential surface of the outer cylinder 11 and extends toward the inner cylinder 12. A connecting device for a sewer pipe and a drain pipe, characterized in that a blocking plate 14 is formed. (2) A utility model characterized in that a plurality of sealing plates 14 are formed at intervals vertically, and the lowermost sealing plate 14c is formed to have a shorter extension length than the other sealing plates. A connecting device according to registered claim 1. (3) The connecting device according to claim 1, wherein the inner cylinder 12 is formed in a shape with a reduced diameter at the lower part. (4) The connecting device according to claim 1 or 2, wherein the inner cylinder 12 has a cut groove 16 that allows the lower part to be cut into a ring shape. (5) The connecting device according to claim 1, wherein the outer cylinder 11 is formed into a guide hem 15 whose lower end is curved outward.