JP3413159B2 - Fitting - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe joint for connecting a resin pipe body and a ceramic pipe.

[0002]

2. Description of the Related Art Conventionally, in an area where the mounting pipe buried in the ground for sending sewage from each household to the sewage main is a pottery pipe made of pottery, the pottery pipe is made of resin, For example, when connecting a vinyl chloride resin public basin, etc., in the same way as when connecting a vinyl chloride resin public basin and a mounting pipe to each other, the vinyl chloride resin public basin outlet and ceramic It is necessary to stop the water and connect it to the inlet of the pipe.

[0003]

However, since the public basin is made of vinyl chloride resin and the porcelain pipe is made of pottery, the public basin and the porcelain pipe are connected to each other by stopping water with an adhesive or the like. I can't. Therefore, when connecting the outlet of the public basin and the receiving end of the ceramic pipe, it is not easy to surely stop the water and make the connection, and the workability is not good.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a pipe joint capable of connecting a resin pipe body and a ceramic pipe with good workability.

[0005]

According to a first aspect of the present invention, there is provided a pipe joint in which an outflow side of a resin pipe body is formed at an upstream side, and an inflow side into which the resin pipe body is inserted and connected is formed at an upstream side, and a tip end is provided at an inflow side of a ceramic pipe. Is attached to the outer periphery of the joint body made of a resin in which the outlet is inserted and connected on the downstream side and the joint body, and the outlet is fitted and connected to the inlet side of the tubular body. And an annular elastic body that shuts off the water flow from the tubular body and the outlet, and the ceramic tube has a tubular tubular portion and a flow of the tubular portion.
Equipped with a receiving port located on the entrance side and having a diameter expanded from this tubular part,
The joint body is located on the outflow side and the inner diameter of the tubular portion of the ceramic pipe
The outer diameter is smaller than the outer diameter, and the ceramic pipe
Cylindrical shape that fits into the tubular part by being inserted into the mouth
It has a section .

In this structure, after the outlet of the joint body made of resin is fitted into the inflow side of the ceramic pipe, the outflow side of the resin tube is fitted into the inlet of this joint body, Connect pipes made of different materials and ceramic pipes. At this time, the annular elastic body attached to the outer periphery of the joint body on the outlet side shuts off the connection between the outlet and the pipe body . As a result, the same resin pipe body and the inlet side of the joint body are stopped by water and connected to each other, so that the pipe body and the ceramic pipe made of different materials can be easily connected in a water stopped state. Therefore, the resin tube and the ceramic tube are connected with good workability. Also, the inflow side of the tubular section
The tubular part of the ceramic tube in which the socket with the diameter expanded from this tubular part is located
The outer diameter is smaller than the inner diameter of
By inserting into the mouth of the pipe, the tubular part of the ceramic pipe is also inserted.
Since the tubular part to be located is located on the outflow side of the joint body,
When the tubular part of the body is inserted into the socket of the ceramic pipe, this tubular part
Insert up to the tubular part of the ceramic tube. As a result, the tubular shape of the fitting body
When these parts are inserted into the socket of the ceramic pipe and connected,
Since there is no gap between the body and the pot
The accumulation of dirt and the like on the throat is prevented.

According to a second aspect of the present invention, in the pipe joint according to the first aspect, the joint body is such that the outlet is eccentric with respect to the inlet.

[0008] Then, puddle in this arrangement, the outlet of the fitting body, by an eccentric with respect to the inlet of the fitting body, the definitive like in the joint body by the sewage flowing out of the flow from the inlet outlet Is prevented.

The pipe joint according to a third aspect is the pipe joint according to the first or second aspect , in which the inner peripheral edge of the receptacle of the ceramic pipe is
Is an elastic body with packing along the circumference.
Is the ash mounted along the circumferential direction on the outer periphery of the outlet of the fitting body.

[0010] In this configuration, the mounting stand because the elastic body along the outer circumference in the circumferential direction of the outlet, connected to the outlet of the fitting body and the ceramic tube is easily are water stop, also configurations simpler Therefore, the manufacturability is improved .

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The structure of an embodiment of the pipe joint of the present invention will be described below with reference to FIGS.

In FIGS. 1 to 4, reference numeral 1 denotes a pipe joint, and the pipe joint 1 is a ceramic pipe 2 as a mounting pipe buried in the ground, and a connected body buried in a site of a home or the like. The water is connected to the public cell 3 which is the cell of the above.

The pottery tube 2 is a JIS standard (JIS
R 1201), which is formed by firing a cylindrically shaped clay in a furnace (not shown) until it is vitrified, and then applying a glaze such as a silicic acid compound to the surface to impart water resistance and firing. It is a mounting pipe.

Further, the ceramic tube 2 is provided with a tubular portion 5 formed in a tubular shape, as shown in FIGS. 3 and 4.
An outlet 6 is opened on the outflow side of the tubular portion 5. Further, on the inflow side of the tubular portion 5, a receiving port 7 whose inner diameter and outer diameter are both expanded from the tubular portion 5 is formed, and an inflow port 8 is opened on the inflow side of the receiving port 7. ing.

The inflow port 8 is concentrically formed along the circumferential direction so that a plurality of ceramic pipes 2 can be sequentially connected to each other by inserting the outflow side of the tubular portion 5 of the ceramic pipe 2 into the inside. The inner diameter and the outer diameter are larger than the outlet 6 of the ceramic pipe 2 through the enlarged diameter portion 9 that expands in diameter. And this pottery tube 2
A rubber packing 10 along the circumferential direction is attached to the inner peripheral edge of the socket 7 of the, and the outer peripheral edge of the outlet 6 of the tubular portion 5 of the pottery tube 2 is also similarly circumferentially arranged. A rubber packing (not shown) is attached.

The public container 3 is made of resin such as PVC, that is, a synthetic resin such as vinyl chloride resin. Further, an outflow pipe portion 12 as a cylindrical pipe body is projectingly provided on the outflow side of the public basin 3, and an outflow port 13 is opened at an end portion of the outflow pipe portion 12. In addition, a cylindrical inflow pipe portion 14 is provided on the inflow side of the public basin 3 so as to project.
An inflow port 15 is opened at the end of the inflow pipe section 14.

Further, the outflow pipe portion 12 of the public basin 3 is fitted into an inflow port 17 of a universal joint 19 as a pipe body in which the direction of the outflow port 18 with respect to the inflow port 17 can be freely changed to stop water. Connected in a state.

The pipe joint 1 is made of, for example, PVC, that is, a synthetic resin such as vinyl chloride resin, and has a substantially cylindrical joint body 21. This fitting body
21 is formed to have a substantially constant thickness and has an inlet on the upstream side.
22, and an outlet 23 is opened on the downstream side.

The outlet 23 has an inner diameter smaller than the inner diameter of the inlet 22 and an outer diameter smaller than the inner diameter of the tubular portion 5 of the porcelain pipe 2, and the center of the inlet 22. The central axis is eccentric to the axis downward. In addition, the outlet 23 is inserted into the receiving port 7 of the ceramic tube 2,
It is formed on the outflow side of a cylindrical tubular portion 20 into which the tubular portion 5 of the ceramic tube 2 is inserted. The outer diameter B of the tubular portion 20 is slightly smaller than the inner diameter A of the tubular portion 5 of the ceramic tube 2.

Further, the inner peripheral surfaces on the bottom side of the outlet 23 and the inlet 22 are formed on the same plane, and the base of the tubular portion 20 is in the axial direction of the joint body 21 other than below. A step portion 24 is formed which expands in the radial direction.

Further, when the outlet 23 is fitted into the inlet 8 of the ceramic pipe 2 on the outer peripheral portion of the tubular portion 20 and on the tip side of the step portion 24, the outlet 23 and the ceramic pipe 2 are inserted. Elastic body which is an annular body as a water-stop means for connecting the inflow port 8 of
26 is installed. The elastic body 26 is made of rubber or the like, is formed in an annular shape having a rectangular cross section that projects in the radial direction along the circumferential direction, and has an outer diameter slightly smaller than the inner diameter of the receptacle 7 of the pottery tube 2. It has a diameter dimension.

At the inner edge of the opening of the inflow port 22, there is formed a recessed groove-shaped mounting recess 27 along the circumferential direction. The mounting recess 27 has an annular water stopping means having a substantially triangular cross section. A rubber ring 28, which is an elastic body, is attached. The rubber ring 28 stops the connection between the universal joint 19 and the joint body 21 in a state where the outlet 18 of the universal joint 19 is fitted in the inlet 22.

The inner periphery of the rubber ring 28 has a mounting recess.
A projecting piece 29 is formed along the circumferential direction that projects toward the outflow side of the joint body 21 at an angle of about 45 ° when mounted on the 27. The protruding piece 29 is formed so as to be gradually narrowed from the base end toward the tip. Further, the inner edge of the opening of the inflow port 22 is formed with an expanding portion 30 that gradually and concentrically expands in the radial direction toward the opening edge.

Next, the operation of the above embodiment will be described.

First, when connecting the public basin 3 made of vinyl chloride resin to the pottery pipe 2 buried in the ground for sending the sewage of each household to the sewage main pipe 41, the pottery at the position to be connected Dig up to the inlet 8 of the pipe 2.

Next, connect the outflow pipe portion 12 of the public basin 3 to the universal joint.
Insert the universal joint 19 into the inflow port 17 of the public port 19
Attach to.

In this state, after fitting the outflow port 23 of the joint body 21 into the inflow port 8 of the ceramic tube 2, the inflow port 22 of this joint body 21 is inserted.
The outflow port 18 of the universal joint 19 is inserted into the.

At this time, the outer circumference of the elastic body 26 attached to the outflow side of the joint body 21 is inside the inflow port 8 of the earthenware pipe 2.
It comes into contact with the packing 10 fixed to the inner peripheral surface of. For this reason,
This elastic body 26 connects the ceramic tube 2 and the joint body 21 by stopping water.

Further, a rubber ring 28 attached to a mounting recess 27 at the inner edge of the opening of the inlet 22 of the joint body 21 surrounds the outer peripheral surface of the outlet 18 of the universal joint 19 fitted into the inlet 22 of the joint body 21. Abut along the direction. Therefore, this rubber ring 28 is a universal joint.
19 and the joint body 21 are stopped and connected.

Thereafter, the drainage pipe 42 made of vinyl chloride resin buried in each home is connected to the inflow port 8 of the inflow pipe portion 14 of the public basin 3, and the public basin 3 is installed at a predetermined position. Position and fix.

As a result, the ceramic pipe 2 is connected to the public tub 3 made of vinyl chloride resin in a water-stopped state.

As described above, according to the above-described embodiment, the outlet 23 of the joint body 21 made of vinyl chloride resin is connected to the ceramic pipe 2
After fitting in the inlet 8 of the
When the outlet 18 of the universal joint 19 made of vinyl chloride resin is fitted into the inside, the elastic body 26, the packing 10 and the rubber ring 28 make the universal joint 19 with respect to the joint body 21 and the ceramic pipe 2 in a water-stopped state. Can be connected.

As a result, the joint body 21 made of vinyl chloride resin
Since the universal joint 19 made of different material and the ceramic pipe 2 can be easily connected in a water-stopped state, that is, in an elastically joined state without adhering the ceramic pipe 2 and the ceramic pipe 2 with an adhesive agent, etc. It is possible to connect the basin 3 and the ceramic pipe 2 with good workability.

Further, since the connection between the inflow port 8 of the ceramic pipe 2 and the outflow port 23 of the joint body 21 is stopped by the elastic body 26 and the packing 10, the outflow port 23 of the joint body 21 and the inflow port 8 of the ceramic pipe 2 are stopped. Since the connection with the water can be stopped easily and the structure can be simplified, the manufacturability can be improved, and the outlet 8 of the joint body 21 can be simply inserted into the inlet 8 of the pottery tube 2 to make the joint body. Since it is possible to connect 21 and the pipe body 2 in a water-stopped state, it is possible to easily connect the joint body 21 to the ceramic pipe 2.

Further, the outlet 23 of the joint body 21 is connected to the inlet 22.
Since they are eccentric with respect to each other, the portions where the inner peripheral surfaces on the bottom side of the outlet port 23 and the inlet port 22 are flush with each other are piped downward, so that they flow in from the inlet port 22 and flow out from the outlet port 23. It is possible to prevent pooling of water such as sewage in the joint body 21.

Further, the outer diameter B is slightly smaller than the inner diameter A of the tubular portion 5 of the pottery tube 2, and the tubular portion 5 of the pottery tube 2 is inserted by being inserted into the receptacle 7 of the pottery tube 2. Since the tubular portion 20 to be inserted up to is provided on the outflow side of the joint body 21, when the tubular portion 20 of the joint body 21 is inserted into the receptacle 7 of the ceramic pipe 2,
The tubular portion 20 can be inserted into the tubular portion 5 of the ceramic tube 2.

As a result, the tubular portion 20 of the joint body 21 is attached to the ceramic tube 2
Since a gap is not formed between the joint main body 21 and the ceramic pipe 2 when it is inserted into the socket 7 and connected, it is possible to prevent accumulation of dirt and the like in the socket 7 of the ceramic pipe 2.

Therefore, even if the fitting distance between the joint body 21 and the porcelain pipe 2 is estimated to be slightly larger, the joint body 21 can be connected and the joint body 21 and the porcelain pipe 2 can be more reliably stopped in a water-stopped state. Can be connected. Moreover, since the fitting distance between the joint body 21 and the ceramic pipe 2 is long, the joint body 21 and the ceramic pipe 2 can be easily connected without moving the ceramic pipe 2 or the public basin 3, so that the operator The usability can be improved.

Further, since the expanding portion 30 is formed on the inner edge of the opening of the inflow port 22 of the joint body 21, the expanding portion 30 gradually and concentrically expanding in the radial direction toward the opening edge is formed.
The inner diameter of the opening end of the inflow port 22 of 21 can be increased. As a result, the work of fitting the outflow port 18 of the universal joint 19 into the inflow port 22 of the joint body 21 can be facilitated.

In the above-mentioned embodiment, the packing 10 is attached to the inner peripheral edge of the inflow port 8 and the packing is attached to the outer peripheral edge of the outflow port 6 in the above description. However, for example, as shown in FIGS. 5 and 6, only about 45 mm toward the outlet 6 is provided only on the inner peripheral surface of the enlarged diameter portion 9 which is the inner peripheral edge of the inlet 8.
Even in the ceramic tube 2 to which the rubber annular packing 52 having the rib portion 51 projecting obliquely is attached, the same operational effect as that of the above-described one embodiment can be obtained.

With this structure, when the outlet 23 of the joint body 21 is fitted into the inlet 8 of the ceramic pipe 2, the rib portion 51 of the annular packing 52 of the ceramic pipe 2 is inserted.
However, as shown in FIG. 6, the joint body 21 is pushed by the open end of the outlet 23 and bent toward the outlet 6 of the ceramic pipe 2. As a result, even when the elastic body 26 attached to the outlet 23 of the joint body 21 does not have elasticity, for example, when it is molded with vinyl chloride resin or the like, the same operational effect as that of the above-described one embodiment can be obtained. it can.

[0042]

According to the pipe joint of the first aspect, after the outflow port is fitted into the inflow side of the ceramic pipe, the outflow side of the pipe body is inserted into the inflow port so that the pipe body and the ceramic pipe are joined together. By connecting, the annular elastic body attached to the outer circumference of the joint body on the outlet side shuts off the connection between the outlet and the pipe body, so that the resin pipe body and the inlet side of the joint body are equal to each other. When and are stopped and connected, the pipe body and the ceramic pipe made of different materials can be easily stopped by connecting the water and the resin pipe body and the ceramic pipe can be connected with good workability. Also, insert the tubular part of the joint body into the socket of the ceramic pipe.
Since this tubular part fits into the tubular part of the ceramic pipe,
When connecting the tubular part of the main body to the receptacle of the ceramic pipe, these joints
There is no gap between the main body and the ceramic tube, so
It is possible to prevent the accumulation of filth and the like.

According to the pipe joint of the second aspect, in addition to the effect of the pipe joint of the first aspect, since the outlet is eccentric with respect to the inlet, the sewage flowing in from the inlet and flowing out from the outlet. the puddles of definitive inside joint body due prevented.

[0044] According to the pipe joint of claim 3, wherein, in addition to the effect of claim 1 or 2 wherein the pipe joint, can be easily waterproofing the connection between the flow outlet and the ceramic tube, also the configuration can be simplified Therefore, the productivity can be improved .

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a pipe joint of the present invention.

FIG. 2 is a front view showing the above pipe joint.

FIG. 3 is a side view in which a pipe joint of the same as above is partially cut away.

FIG. 4 is a cross-sectional view showing a part of a construction state of the pipe joint of the same.

FIG. 5 is a cross-sectional view showing a part of another construction state of the pipe joint of the same.

FIG. 6 is a sectional view showing a part of another construction state of the pipe joint of the same.

[Explanation of symbols]

1 fitting 2 ceramic tube 5 the tubular portion 7 socket 10 joint 20 the tubular portion 21 fitting body 22 inlet 23 outlet 26 elastic member as packing 19 tube

Claims (3)

(57) [Claims] 1. An outflow side of a resin pipe body is formed on the upstream side, and an inflow side is inserted and connected to the inside, and an outlet side is formed on the downstream side, the tip of which is inserted and connected to the inflow side of a ceramic pipe. And a resin-made joint body attached to the outer periphery of the joint body on the outlet side, and the pipe body and the outlet are stopped while the outlet is fitted and connected to the inlet side of the pipe. An annular elastic body is provided, and the pottery tube is disposed on the inflow side of the tubular portion and the tubular portion.
And a receiving port having a diameter enlarged from the tubular portion, and the joint body is located on the outflow side and is located inside the tubular portion of the ceramic pipe.
The outer diameter is smaller than the diameter, and
A tube that fits into the tubular part by being inserted into the receiving port
A pipe joint characterized by having a section . 2. The pipe joint according to claim 1, wherein the outlet of the joint body is eccentric with respect to the inlet. 3. The inner peripheral edge of the receptacle of the ceramic pipe is along the circumferential direction.
Were packing is mounted, the elastic body, according to claim 1 or 2 wherein the pipe joint was characterized by that you mounted along the circumferential direction on the outer periphery of the outlet of the fitting body.