JP2862811B2 - Pipe fittings - 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.

[0002]

2. Description of the Related Art Conventionally, when connecting pipes for sewage in a house or the like, a pipe joint made of, for example, polyvinyl chloride formed in a substantially T-shape has been used. This pipe joint is composed of a main joint formed in a cylindrical shape, and a sub-joint extending in a direction orthogonal to the main joint and connected to the main joint,
The main joint and the sub joint are integrally formed. The pipes for sewage are fitted inside the openings of the main joint and the sub joint, respectively, so that the pipes communicate with each other.

[0003] As a seal structure between the inner peripheral surface of the opening of the main joint and the sub-joint and the outer peripheral surface of each pipe, for example, a seal structure disclosed in Japanese Patent Application Laid-Open No. 4-107389 is known. That is, the large-diameter portion is bent so as to bulge outward in the openings of the main joint and the sub-joint, and the mounting groove is formed inside the large-diameter portion. Then, when the pipes are fitted into the openings of the main joint and the sub-joint while the packing is installed in the mounting grooves, the packing causes a gap between the inner peripheral surface of the opening of the main joint and the sub-joint and the outer peripheral surface of each pipe. From leaking water.

However, in the above-mentioned pipe joint, a large diameter portion must be bent inside the openings of the main joint and the sub-joint which are integrally formed. Therefore, there has been proposed a pipe joint formed by separately forming a main joint and a sub joint, and then connecting the main joint and the sub joint. In this pipe joint, a connection port is formed in an outer wall of the main joint, and an end of the sub-joint is inserted into the connection port. Then, the main joint and the sub-joint are connected by bending the end of the sub-joint so as to protrude outward from the sub-joint, and hooking the inner surface of the main joint.

[0005] In the pipe joint constructed as described above, large-diameter portions can be bent at openings of the separately formed main joint and sub-joint, and then the main joint and the sub-joint can be connected. Therefore, a pipe joint can be formed more easily than a pipe joint in which the main joint and the sub-joint are integrally formed.

[0006]

However, in the above-mentioned pipe joint, since the end of the sub-joint is merely hooked on the inner surface of the main joint, when the sub-joint is pressed toward the main joint, the sub-joint is not connected to the main joint. There was a problem of falling into.

The present invention has been made to solve the above problems, and a first object of the present invention is to connect both joints without dropping a sub joint into a main joint. A second object is to securely connect the sub joint and the main joint.

A third object is to enable the auxiliary joint to be stably supported on the main joint.

[0009]

In order to achieve the above object, according to the first aspect of the present invention, a hook which is hooked on the connection port at a base end of a sub-joint which penetrates a connection port provided in the main joint. The main joint has a base end portion of the support member engaged with the main joint, and a support portion supported by a distal end portion of the support member is provided on an outer surface of the sub joint.

In the invention according to claim 2, a receiving seat is provided at an opening edge of the connection port in the main joint, and a base end of the support member is locked to the receiving seat. At least one of the support member and the engaging portion has elasticity, and the sub joint is assembled to the main joint in a state where at least one of the elastic members is elastically deformed. The tip of the support member was pressed against the support of the sub joint.

According to the third aspect of the present invention, the support member is a support tube through which the sub-joint penetrates. The support tube has a base end abutting on the main joint and a distal end supporting the support portion of the sub-joint. To do.

[0012]

According to the first aspect of the present invention, the base end of the support member is locked to the main joint, and the support portion of the sub joint is supported by the distal end of the support member.

According to the second aspect of the present invention, in addition to the operation of the first aspect, the supporting portion of the sub-joint is provided with an elastic force of at least one of the receiving seat, the supporting member, and the engaging portion. The distal end portion of the support member is pressed.

According to the third aspect of the present invention, the first or second aspect is provided.
In addition to the operation of the described invention, the support pipe through which the sub-joint penetrates
The base end thereof is in contact with the main joint, and the distal end supports the supporting portion of the sub joint.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG. As shown in FIG. 1, the pipe joint 11 includes a main joint 12 formed in a cylindrical shape, and a cylindrical sub-joint 13 formed separately from the main joint 12. Reference numeral 13 is attached in a substantially T-shape. The pipe joint 11 is formed of a resin such as vinyl chloride. A main joint side connection portion 14 is provided at a longitudinal center portion of the main joint 12, and a main joint side receiving portion 15 having a diameter larger than that of the main joint side connection portion 14 is provided at each of both longitudinal end portions of the main joint 12. Is provided. In the main joint 12, between the main joint side connection portion 14 and the main joint side receiving portion 15, the main joint side whose diameter decreases from the main joint side receiving portion 15 toward the main joint side connecting portion 14. A tapered portion 16 is provided.

The main joint side receiving portion 15 has a main joint side large diameter portion 17 which is bent so as to have a larger diameter than the main joint side receiving portion 15. A main joint side mounting groove 18 is formed inside the main joint side large diameter portion 17, and the main joint side mounting groove 18 is formed.
Inside, a packing 19 formed in an annular shape is mounted. When the main pipe 20 for sewage in a house, for example, is fitted inside the main joint side receiving portion 15, the packing 1
9 is sandwiched between the inner peripheral surface of the main joint side receiving portion 15 and the outer peripheral surface of the main pipe 20. As a result, the packing 19 prevents water leakage from between the inner peripheral surface of the main joint side receiving portion 15 and the outer peripheral surface of the main pipe 20.
The tip of the main pipe 20 is connected to the main joint side tapered portion 16.
, So that the main pipe 20 is not fitted deeper than the main joint side tapered portion 16 in the main joint 12.

A connection port 22 is provided on an outer wall of the main joint side connection portion 14 of the main joint 12, and an elastic annular seat 21 is provided on an opening edge of the connection port 22 of the main joint 12. . The receiving seat 21 is bent so as to expand toward the outside of the main joint 12, and the inner edge of the receiving seat 21 projects toward the inside of the main joint 12. Further, a sealing member 23 such as a rubber packing is attached to the receiving seat 21 so as to cover the front and back surfaces thereof. On the upper side of the seat 21 in FIG. 1, a support tube 24 as a support member formed in a cylindrical shape is provided. The base end of the support tube 24 is in contact with the upper end of the receiving seat 21 via the sealing member 23.
That is, the contact surface between the base end of the support tube 24 and the sealing material 23 extends in an annular shape along the upper end of the receiving seat 21 formed so as to surround the connection port 22. The support tube 24 is formed so as to decrease in diameter from the base end to the distal end, and the base end of the support tube 24 is bent so as to protrude toward the axis of the support tube 24.

A ring plate 25 is mounted on the tip of the support tube 24. The ring plate 25 has a pair of through holes 25a extending in the vertical direction in FIG. The ring joint 25, the support pipe 24 and the connection port 22 are provided with the auxiliary joint 13
Is penetrating. At the base end of the sub-joint 13 located in the main joint 12, a hook portion 32 projecting outward from the sub-joint 13 is formed in a bent shape. Further, a sub-joint side connecting portion 26 is provided on the base end side of the sub-joint 13, and the sub-joint 13
A secondary joint side receiving portion 27 having a diameter larger than that of the secondary joint side connection portion 26 is provided at the tip end side of the secondary joint. In the sub-joint 13, between the sub-joint-side receiving portion 27 and the sub-joint-side connecting portion 26, a sub-joint-side taper portion whose diameter decreases from the sub-joint-side receiving portion 27 toward the sub-joint-side connecting portion 26. 28 are provided.

The secondary joint-side receiving portion 27 is formed with a secondary joint-side large-diameter portion 29 as a support so as to have a larger diameter than the secondary joint-side receiving portion 27. Reference numeral 29 is located above the ring plate 25 in FIG.
A sub-joint-side mounting groove 30 is formed inside the sub-joint-side large-diameter portion 29, and an annular packing 31 is mounted in the sub-joint-side mounting groove 30 as a seal member. When the sub-joint 13 is pressed against the main joint 12, the sub-joint-side large-diameter portion 29 presses the support tube 24 against the seat 21 of the main joint 12 via the ring plate 25. It is designed to be deformed. Further, in this state, the hook 32 of the sub joint 13 is hooked on the seat 21, so that the sub joint 13 is connected to the main joint 12.
In addition, the sealing material 23 is provided between the hook 32 and the seat 21.
, And the distal end of the support tube 24 is pressed against the sub-joint-side large-diameter portion 29 via the ring plate 25 by the elastic force of the receiving seat 21.

A secondary pipe 33 for sewage in a house, for example, is fitted inside the secondary joint side receiving portion 27. When the sub pipe 33 is fitted inside the sub joint side receiving portion 27, the packing 31 is moved to the sub joint side receiving portion 27.
And the outer peripheral surface of the auxiliary pipe 33. As a result, the packing 31 causes the sub-joint side receiving portion 27
Is prevented from leaking between the inner peripheral surface of the sub pipe 33 and the outer peripheral surface of the sub pipe 33. The tip of the sub-pipe 33 abuts on the sub-joint-side tapered portion 28, and the sub-pipe 33
Is prevented from being fitted into the sub-joint 13 deeper than the sub-joint-side tapered portion 28.

A fixing member 34 formed into a cylindrical shape is fitted into and fixed to the outer peripheral surface of the auxiliary pipe 33. A flange 35 protrudes from the outer peripheral surface of the fixture 34, and a pair of mounting holes 35 a extending in the vertical direction are provided at positions on the flange 35 corresponding to the two through holes 25 a of the ring plate 25. And
The fixing pipe 36 is passed through the mounting hole 35a and the through-hole 25a, and the nut 37 is screwed to the tip of the fixing bolt 36 and tightened.
Is fixed against.

Next, the pipe joint 11 constructed as described above is used.
The operation of will be described. In order to connect the sub pipe 33 to the sub joint 13 of the pipe joint 11, the sub joint side receiving portion 27 of the sub joint 13 is connected.
The tip of the sub pipe 33 is fitted into the inside of the pipe. The tip of the sub pipe 33 is the sub-joint-side tapered portion 2 of the sub-joint 13.
8 is pressed against the auxiliary joint 13
Is pressed against the main joint 12 side. Since the sub-joint 13 has its sub-joint-side large-diameter portion 29 supported by the support tube 24 that is in contact with the receiving seat 21 of the main joint 12, the tip of the sub-joint 33 is connected to the sub-joint-side taper portion 28. Even if pressed, the auxiliary joint 13 is prevented from falling into the main joint 12.

Further, since the sub-joint 13 is supported by the main joint 12 by the support pipe 24 through which the sub-joint 13 penetrates, the sub-joint 13 is tilted with respect to the axis of the sub-joint 13. Even if it is fitted inside the mouth 27, the sub joint 13 is supported by the main joint 12 without tilting with respect to its axis.

The support tube 24 is disposed between the seat 21 and the ring plate 25 in a state where the support seat 21 of the main joint 12 is elastically deformed. The seat 21 is pressed against the large diameter portion 29 on the auxiliary joint side via the ring plate 25 by the elastic force of the seat 21. By pressing the distal end portion of the support tube 24 against the secondary joint-side large-diameter portion 29, the secondary joint 13 is constantly urged in a direction away from the main joint 12, so that the latching portion 32 of the secondary joint 13 is securely connected to the main joint 12. Is hooked on the seat 21.

A secondary pipe 33 is provided inside the secondary joint side receiving portion 27.
After fitting the leading end of the ring pipe 25, the mounting hole 35a of the fixture 34 and the through-hole 25
a is passed through the fixing bolt 36. Then, when the nut 37 is screwed to the tip of the fixing bolt 36 and tightened, the ring plate 25, the fixing tool 34, the fixing bolt 36 and the nut 3
7, the auxiliary pipe 33 is fixed to the auxiliary joint 13.

As described above in detail, in the present embodiment, the sub-joint 13 has its sub-joint-side large-diameter portion 29 supported by the support tube 24 via the ring plate 25 on the seat 21 of the main joint 12. Therefore, even if the sub joint 13 is pressed against the main joint 12, the sub joint 13 can be prevented from dropping into the main joint 12. Therefore, the sub joint 13 is connected to the main joint 1.
The two joints 12, 13 can be connected without dropping into the inside 2.

Further, even if the sub-pipe 33 is fitted inside the sub-joint side receiving portion 27 in a state where it is tilted with respect to the axis of the sub-joint 13, the sub-joint 13 is not tilted with respect to its axis. Since the auxiliary joint 13 is supported by the joint 12, the auxiliary joint 13 can be stably supported by the main joint 12.

The distal end of the support tube 24 is moved by the elastic force of the seat 21 through the ring plate 25 to the large-diameter portion 29 on the secondary joint side.
, The secondary joint 13 is always urged in a direction away from the main joint 12. As a result, the hook 32 of the sub-joint 13 is securely hooked on the seat 21 of the main joint 12, so that the sub-joint 13 and the main joint 12 can be reliably connected.

Further, the tip of the support tube 24 is
Since the auxiliary joint 13 has a large-diameter portion 29 which is formed in advance on the auxiliary joint 13 for mounting the support tube 1, it is not necessary to newly form a support portion supported by the distal end of the support tube 24 on the auxiliary joint 13. . Therefore, the auxiliary joint 13 can be provided without newly providing a support portion.
Without dropping into the main joint 12,
13 can be connected.

In the present embodiment, the distal end of the support pipe 24 is pressed against the large diameter portion 29 on the sub-joint side via the ring plate 25 for fixing the sub-pipe 33 to the sub-joint 13. Therefore, the auxiliary pipe 33 is formed by the ring portion 25.
Can be fixed to the sub joint 13 and the sub pipe 3
3 can be securely attached to the sub joint 13.

The present invention can be embodied with the following modifications, for example. (1) As shown in FIG. 2, a main joint side connection portion 14 is provided at one end side of the main joint 12, and a main joint side receiving portion 15 is provided at the other end side, and an open end of the main joint side connection portion 14 is provided. Seat 21
May be provided. In this case, the main joint 12 and the sub joint 13 are connected so as to extend coaxially. Even with such a configuration, the same effect as in the above embodiment can be obtained.

(2) In the present embodiment, the support tube 24 through which the sub-joint penetrates is exemplified as the support member, but the present invention is not limited to this. That is, for example, a support rod whose base end portion is locked to the outer peripheral surface of the main joint 12 and whose front end portion abuts on the sub-joint-side large-diameter portion 29 via the ring plate 25 may be provided as a support member. In this case, a plurality of support bars may be provided so as to surround the auxiliary joint 13. Even with such a configuration, the same effect as that of the embodiment can be obtained.

(3) In the present embodiment, the receiving seat 21 has elasticity, but the support tube 24 or the hook 32 may have elasticity. When the support tube 24 has elasticity, the support tube 24
The sub-joint 13 is assembled to the main joint 12 in a state where the sub-joint 13 is pressed against the seat 21 and elastically deformed, whereby the distal end of the support tube 24 is pressed against the sub-joint-side large-diameter portion 29 via the ring plate 25. You. When the hook portion 32 is made elastic, the hook portion 32 hooked on the receiving seat 21 is elastically deformed by pulling the auxiliary joint 13 in a direction away from the main joint 12, and in this state, the support pipe 24 is elastically deformed. Thus, the sub joint 13 is supported by the main joint 12. Even with the above configuration, the support tube 24
Of the main joint 12 and the sub-joint 1 in the same manner as in the embodiment.
3 can be reliably connected. In addition, two or more of the receiving seat 21, the support tube 24, and the hook 32 may have elasticity. Also in this case, the main joint 12 and the sub-joint 13 can be reliably connected as described above.

(4) In the present embodiment, the base end of the support tube 24 is pressed against the seat 21, and the distal end of the support tube 24 is attached via the ring plate 25 while the seat 21 is elastically deformed. Although the abutment is brought into contact with the joint-side large-diameter portion 29, the present invention is not limited to this. That is, even if the base end of the support tube 24 is brought into contact with the seat 21 without being pressed, the distal end of the support tube 24 is brought into contact with the large-diameter portion 29 on the auxiliary joint side via the ring plate 25 in this state. Good. Also in this case, the large diameter portion 29 on the sub-joint side is
4, the two joints 12, 13 can be connected without dropping the auxiliary joint 13 into the main joint 12.

(5) Further, in the case of the above configuration (4), the base end of the support tube 24 may be brought into contact with a portion other than the receiving seat 21 on the outer peripheral surface of the main joint 12. In this case, since the support tube 24 does not need to be formed in a size corresponding to the diameter of the receiving seat 21, the formation of the support tube 24 becomes easy.

(6) In the present embodiment, the auxiliary joint-side large-diameter portion 29 formed in advance on the auxiliary joint 13 is used as a support portion, but, for example, a support projection is provided on the outer peripheral surface of the sub-joint 13 as a support portion. The support protrusion may be supported by the tip of the support tube 24. Also in this case, both joints 12 and 13 can be connected without dropping sub joint 13 into main joint 12.

(7) In this embodiment, the pipe joint 11 is formed of a resin such as vinyl chloride, but the pipe joint may be formed of another resin such as a phenol resin or polyethylene.

Next, technical ideas other than the claims, which can be understood from the above embodiments, will be described below together with their effects. (1) In the pipe joint according to any one of claims 1 to 3, a ring plate for attaching a pipe connected to the sub-joint to the sub-joint is fitted on the main joint side of the support portion of the sub-joint, A pipe joint wherein a distal end portion of the support tube supports the support portion via the ring plate. In this case, the pipe connected to the sub-joint can be securely attached to the sub-joint.

(2) The pipe joint according to any one of claims 1 to 3, wherein the support portion is a large-diameter portion formed for mounting a seal member on an inner surface of the sub-joint. In this case, both joints can be connected without dropping the auxiliary joint into the main joint without newly providing a support portion.

[0040]

According to the first aspect of the present invention, since the supporting portion of the sub-joint is supported by the distal end of the supporting member locked to the main joint, the sub-joint is not dropped into the main joint. Fittings can be connected.

According to the second aspect of the invention, in addition to the effect of the first aspect, the leading end of the support member is pressed into contact with the support of the sub-joint, so that the latching portion of the sub-joint is securely connected to the main joint. Since the main joint and the sub-joint can be reliably connected to each other because they are hooked on the inner surface of the joint.

According to the third aspect of the present invention, the first or second aspect is provided.
In addition to the effects of the invention described above, by supporting the support portion of the sub-joint at the tip of the support pipe through which the sub-joint penetrates, the sub-joint can be stably supported with respect to the main joint.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a pipe joint according to the present embodiment.

FIG. 2 is a sectional view showing another example of a pipe joint.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 11 ... Pipe joint, 12 ... Main joint, 13 ... Sub joint, 21 ... Receiving seat, 22 ... Connection port, 24 ... Support pipe as a support member, 2
9: Large-diameter portion on the auxiliary joint side as a support portion, 31 ... Packing as a seal member, 32 ... Hook portion.

Claims (3)

(57) [Claims] A connection port (2) provided in a main joint (12).
At the base end of the sub-joint (13) penetrating 2), a hook (32) to be hooked to the connection port (22) is provided, and the base end of the support member (24) is attached to the main joint (12). A pipe joint provided with a support portion (29) that is locked and is supported on the outer surface of the sub-joint (13) by the tip of a support member (24). 2. A connection port (2) in said main joint (12).
A receiving seat (21) is provided at the opening edge of 2), and a base end of the supporting member (24) is locked by the receiving seat (21). The receiving seat (21) and the supporting member ( 24) and at least one of the engaging portions (32) have elasticity, and the sub-joint (13) has at least one of the elasticities deformed elastically. 2. The front end of the supporting member (24) is pressed against the supporting portion (29) of the auxiliary joint (13) by assembling the main joint (12).
The described pipe fitting. 3. The sub-joint (13) wherein the support member (24) is
Is a supporting tube (24) penetrating, the supporting tube (24) having a base end abutting on the main joint (12) and a distal end supporting the supporting part (29) of the sub-joint (13). The pipe joint according to claim 1 or 2, wherein