JP4564915B2 - Connection branch - Google Patents

Description

  The present invention relates to a connecting branch pipe for connecting a branch pipe line such as a mounting pipe to a main pipe line such as a sewage main pipe.

In general, when connecting the installation pipe connected to the public sewage of each household to the sewage main pipe, when piping from the sewage main pipe to the upstream side, a saddle-type branch pipe is placed at a predetermined position of the sewage main pipe. Is installed to branch the sewage main pipe and connect the pipe to the branch pipe.
When attaching a branch pipe to the sewage main pipe, an opening is provided at a predetermined position of the sewage main pipe using a horuseau or the like, a saddle-type branch pipe is attached to the opening, and an adhesive or putty-like bonding agent is provided. Was used to fix the branch pipe to the sewage main pipe.
However, when an adhesive or putty-like bonding agent is used, it has been difficult to save labor in piping work and to ensure construction reliability.

Therefore, conventionally, a branch pipe that can mechanically fix the branch pipe to the sewage main pipe without using an adhesive or a putty-like bonding agent in order to save labor in piping work and ensure the reliability of the construction. Joints and branch connection pipe joints have been proposed (see Patent Document 1 and Patent Document 2).
In a conventional branch pipe joint, a plurality of first short pipes and second short pipes are connected via rubber rings and locked to the inner surface of the peripheral edge of the original pipe at the tip of the first short pipe. A saddle that is in contact with the outer surface of the peripheral edge of the attachment opening of the original pipe is attached to the outer peripheral part of the first short pipe, and the engagement part of the first short pipe and the mounting part of the saddle Attach a rubber ring between them, pull up the locking part with respect to the original pipe and saddle by rotating the second short pipe, and compress the rubber ring to the outer surface of the inner diameter part or the peripheral part of the attachment port Crimp.
Further, in the conventional branch connection pipe joint, the inner pipe attached to the branch hole of the pipe body is formed with a locking projection for preventing the drop into the branch hole, and larger than the diameter of the branch hole. While providing a close contact part with an elastic ring, a branch part that contacts the side edge of the insertion part is formed on the branch pipe connection pipe, and the close contact part is deformed to insert the inner pipe into the branch hole from the insertion part. After that, the threaded portion of the branch pipe connecting tube and the threaded portion of the inner tube are screwed together, the inner tube is pulled up, and the close contact portion of the inner tube is brought into close contact with the inner peripheral edge portion of the branch hole.

JP-A-4-194488 (page 2-4, FIG. 1) Japanese Utility Model Publication No. 7-55435 (page 2-3, FIG. 1)

However, in the above-described conventional configuration, when the second short tube is rotated, the locking portion is pulled up and the rubber ring is compressed and deformed to be crimped to the outer surface of the inner diameter portion or the peripheral portion of the attachment port. When an excessive rotational force or a screwing force is applied when the screw part and the screw part of the inner pipe are screwed together to pull up the inner pipe, and the close contact part of the inner pipe is brought into close contact with the inner peripheral edge of the branch hole, There has been a problem that deformation of the locking portion or the close contact portion may occur, which may cause water leakage or improper fixing.
In the above conventional configuration, when the locking portion of the first short pipe or the flange portion of the branch pipe connecting pipe is forgotten to be locked, or when the locking portion or the locking portion of the hook portion is defectively locked. There was also a problem that water leakage might occur.

As a means for solving the above-described conventional problems, the present invention is a connecting branch pipe 1 for connecting a branch pipe line to the main pipe line 2, and is locked to the periphery of the opening 3 of the main pipe line 2. A locking member 6 provided with claws 4, 5, a saddle member 7 fitted on the locking member 6 and mounted on the main pipeline 2, and inserted into the saddle member 7 and a branch And a connection member 9 provided with a connection port 8 to which a pipe line is connected, and the rotation of the locking claw 4 is prevented by screwing the connection member 9 to the locking member 6. Thus, the locking claw 4 cannot pass through the opening 3 of the main pipeline 2, and the locking member 6 has a fixed claw (locking claw 5) on one side and a pivot pin 11 on the other side. A pivoting pawl (locking pawl 4) is pivotally attached to the latching member 6 via a pivot, and the pivoting latching pawl 4 is pivoted to rotate the pawl. The pawl 4 can pass through the opening 3 of the main pipeline 2, and the saddle plate 14 of the saddle member 7 is formed with an arcuate recess 14 a on the direction side corresponding to the fixed pawl (locking pawl 5). The connecting branch pipe 1 is provided.
It is desirable that the arcuate recess 14a is substantially equal to the tube wall shape of the main pipeline 2.

In the connection branch pipe 1 of the present invention, the locking claw 4 pivotally attached to the locking member 6 is rotated so that the arcuate recess 14a of the saddle plate 14 corresponds to the pipe wall surface of the main pipe line 2 and the locking claw. 5 is passed through the opening 3 of the main pipeline 2, the locking claws 4, 5 are locked to the periphery of the opening 3 of the main pipeline 2, and the connecting member 9 is screwed to the locking member 6. This prevents the locking claw 4 from rotating and prevents the locking claw 4 from passing through the opening 3 of the main pipeline 2.
Therefore, when the connection member 9 is screwed to the locking member 6, the locking claws 4 and 5 are securely locked to the peripheral edge of the opening 3. Generation | occurrence | production can be prevented and the certainty of construction can be improved. Moreover, since construction work is simple and easy, labor saving of piping work can be achieved. Further, the locking claw 5 can be passed from the distal end side to the opening 3 of the main pipe line 2 while the saddle member 7 is tilted along the arcuate recess 14a of the saddle plate 14 along the pipe wall surface of the main pipe line 2. Therefore, workability can be improved.

  Hereinafter, the present invention will be described in detail with reference to Example 1 and Example 2.

The present invention will be described with reference to an embodiment shown in FIGS.
In the present embodiment, in the case of the connecting branch pipe 1 for connecting a mounting pipe (not shown) which is a branch pipe connected to a public pipe (not shown) of each household to a sewage main pipe 2 which is a main pipe. Is illustrated.

  The connecting branch pipe 1 includes a locking member 6 provided with two locking claws 4 and 5 that are locked to the periphery of the opening 3 of the sewage main pipe 2, and an outer fitting on the upper portion of the locking member 6. And a saddle member 7 mounted on the upper surface of the sewage main pipe 2 and a rubber ring receiving port 8 which is inserted into the saddle member 7 and connected to the attachment pipe is provided at the upper part. And a member 9.

As shown in FIGS. 1 and 2, the two locking claws 4, 5 of the locking member 6 have a substantially L-shaped cross section, and the shape of the locking plate 10 that is extended substantially horizontally is sewage An arch shape is formed along the shape of the inner peripheral surface of the periphery of the opening 3 of the main pipe 2.
A pair of pivot pins 11 project from the upper side surface of one latch claw 4, and the one latch claw 4 can turn to the latch member 6 via the pivot pin 11. It is pivotally attached. On the other hand, the other locking claw 5 of the locking member 6 is provided integrally with the locking member 6. In this embodiment, the two locking claws 4 and 5 are provided along the axial direction of the sewage main pipe 2.
Further, a thread groove 12 is provided on the upper inner peripheral surface of the locking member 6 and the locking claws 4 and 5. Further, a locking step 13 is provided on the upper outer peripheral surface of the locking member 6 and the locking claws 4, 5, and the locking step 13 is locked to the periphery of the opening 3 of the sewage main pipe 2. Thus, the locking member 6 is prevented from falling into the sewage main pipe 2.

As shown in FIG. 2, a saddle plate 14 that is extended substantially horizontally is provided at the lower portion of the saddle member 7, and the shape of the saddle plate 14 follows the shape of the upper surface of the sewage main pipe 2. It has an arch shape.
As shown in FIG. 3, an arcuate recess 14 a that is substantially equal to the tube wall shape of the sewage main pipe 2 is formed at one end of the arch shape. By setting the shape of the arcuate recess 14a in this way, the saddle plate 14 is opened while the edge of the arcuate recess 14a is aligned with the pipe wall shape of the sewage main pipe 2 when the connecting branch pipe 1 is installed. 3 can be brought close to each other.
The arcuate recess 14 a is provided on the side corresponding to the position of the locking claw 5. As shown in the figure, after inserting the locking claw 5 into the opening 3 in the radial direction of the sewage main pipe 2, the locking claw 5 is parallel to the pipe axis direction along the pipe wall of the sewage main pipe 2. There is no need to guide the locking claw 5 to the locking position with the edge of the opening 3 in two steps, such as movement. That is, the saddle member 7 can be tilted with respect to the pipe wall surface of the sewage main pipe 2, and the locking claw 5 can be inserted obliquely from the front end side toward the edge of the opening 3. Is feasible.
In this embodiment, depending on the pipe diameter of the sewage main pipe 2, the connection branch pipe 1 having the arcuate recess 14a substantially equal to the pipe wall shape (the curvature of the pipe wall) of the sewage main pipe 2 is selected. Although the fitting feeling of the arc-shaped recess 14a with respect to the tube wall surface of the main pipe 2 can be enhanced and the locking claw 5 can be made closer to the opening 3, the present invention provides workability by providing the arc-shaped recess 14a. From the viewpoint that it can be improved, for example, the shape and curvature of the arc-shaped recess 14a may be unified according to the pipe diameter of the highly versatile sewage main pipe 2, or the sewage main pipe 2 You may provide the circular-arc-shaped recessed part 14a different from a pipe wall shape and a curvature. The arcuate recess 14a is also useful in that the operator can know the position of the locking claws 5 (the direction of the locking claws 4, 5) without turning the saddle member 7 over and confirming. .
Furthermore, a first packing 15 is fitted on the inner periphery of the lower portion of the saddle member 7. A contact step 16 is provided on the upper inner peripheral surface of the saddle member 7, and an annular engagement claw 17 is provided on the inner peripheral surface at the upper end of the saddle member 7.

As shown in FIG. 2, an insertion portion 18 is provided at the lower portion of the connection member 9, and a screw portion 19 is provided on the outer peripheral surface of the insertion portion 18. A contact portion 20 is provided above the insertion portion 18.
Further, an engagement protrusion 21 is provided on the outer periphery of the central portion of the connection member 9, and a second packing 22 is fitted to a portion below the engagement protrusion 21.
Further, a rubber ring receiving port 8 is provided on the upper portion of the connecting member 9, and a rubber ring 23 is fitted on the inner peripheral surface of the rubber ring receiving port 8.

When piping from the sewage main pipe 2 to the upstream side is performed using the connection branch pipe 1, as shown in FIG. 4, the connection branch pipe 1 assembled in advance at a manufacturing factory or the like is used.
At the construction site, first, the insertion portion 18 of the connection member 9 is inserted into the saddle member 7 from above, the contact portion 20 of the connection member 9 is brought into contact with the contact step portion 16 of the saddle member 7, and the saddle member 7 is engaged with the engagement protrusion 21 of the connection member 9, and the connection member 9 and the saddle member 7 are assembled.
Next, the screw portion 19 of the insertion portion 18 of the connection member 9 is screwed into the screw groove 12 of the locking member 6. At this time, the upper end portion of the locking member 6 is sandwiched between the outer peripheral surface of the insertion portion 18 of the connection member 9 and the inner peripheral surface of the saddle member 7. Since one of the locking claws 4 is not screwed, the one locking claw 4 remains in a rotatable state.
Thereafter, an opening 3 is provided at a predetermined position of the sewage main pipe 2 using a tool (not shown) such as a horuseau.
Then, while tilting the saddle member 7 with the arcuate recess 14a of the saddle plate 14 along the pipe wall surface of the main pipeline 2, as shown in FIG. It passes through the opening 3 of the main pipe 2 and is locked to the inner peripheral surface of the periphery of the opening 3 of the sewage main pipe 2, and one locking claw 4 is pivotally attached as shown by an arrow in FIG. The pin 11 is pivoted inward so that the one locking claw 4 can pass through the opening 3.

Next, as shown in FIG. 5, after passing one locking claw 4 through the opening 3 of the sewage main pipe 2, the one locking claw 4 is rotated outward about the pivot pin 11. Thus, the one locking claw 4 is locked to the inner peripheral surface of the peripheral edge of the opening 3.
Thereafter, as shown by an arrow in FIG. 5, the connecting member 9 is rotated to screw the screw portion 19 of the insertion portion 18 of the connecting member 9 into the screw groove 12 of the locking claws 4 and 5 (see FIG. 6). ). Then, since the upper part of one latching claw 4 is also pinched | interposed by the outer peripheral surface of the insertion part 18 of the connection member 9, and the inner peripheral surface of the saddle member 7, rotation of this one latching claw 4 is blocked | prevented. The one locking claw 4 cannot pass through the opening 3 of the sewage main pipe 2.

At this time, when the screw portion 19 of the insertion portion 18 of the connection member 9 is screwed into the screw groove 12 of the locking member 6 and the locking claws 4, 5, the locking claws 4, 5 of the locking member 6 are obtained. Is raised relative to the connection member 9 and the saddle member 7, and the opening 3 of the sewage main pipe 2 is formed by the upper surface of the locking plate 10 of the locking claws 4 and 5 and the lower surface of the saddle plate 14 of the saddle member 7. The connecting branch pipe 1 is securely fixed to the sewage main pipe 2.
In this case, since the first packing 15 is interposed between the inner peripheral lower surface of the saddle member 7 and the upper surface of the sewage main pipe 2, the saddle member 7 and the sewage main pipe 2 are The space between them is watertight. Further, since the second packing 22 is interposed between the inner peripheral surface of the saddle member 7 and the outer peripheral surface of the connecting member 9, the second packing 22 causes the saddle member 7 to be connected between the connecting member 9. Is in a watertight state (see FIGS. 6 and 7).

  After attaching the connection branch pipe 1 to the predetermined position of the sewage main pipe 2 and branching the sewage main pipe 2 in this manner, the connection pipe is inserted into the rubber ring receiving port 8 of the connection member 9 of the connection branch pipe 1 and connected. Piping work is completed.

  In the connecting branch pipe 1, since the two locking claws 4 and 5 are securely locked to the periphery of the opening 3 of the sewage main pipe 2 by screwing the connecting member 9 to the locking member 6, It is possible to prevent the occurrence of poor locking and water leakage. Further, in the connection branch pipe 1 described above, since the connection member 9 cannot be screwed to the locking member 6 unless one locking claw 4 is locked, the locking claws 4 and 5 are locked. Forgetting can be prevented with certainty, and therefore the reliability of construction can be improved. Moreover, in the connection branch pipe 1 described above, since the construction work is simple and easy, it is possible to save labor in the piping work.

  In addition, when the connecting member 9 and the saddle member 7 are assembled, the annular engaging claw 17 of the saddle member 7 is engaged with and held by the engaging protrusion 21 of the connecting member 9. The connecting member 9 and the saddle member 7 are not separated. Further, when the connecting member 9 and the locking member 6 are assembled, the screw portion 19 of the insertion portion 18 of the connecting member 9 is fixed by screwing into the screw groove 12 of the locking member 6. The connecting member 9 and the locking member 6 are not separated in the attached state.

  Further, since one locking claw 4 is pivotally and integrally pivotally attached to the locking member 6 via the pivot pin 11, the one locking claw 4 can be smoothly rotated. Since one locking claw 4 does not fall during the work, the construction work can be performed smoothly, and the workability of the construction is improved.

Still further, when the screw portion 19 of the insertion portion 18 of the connection member 9 is screwed into the screw groove 12 of the locking member 6, the upper portion of one locking claw 4 is connected to the outer peripheral surface of the insertion portion 18 of the connection member 9. By clamping with the inner peripheral surface of the saddle member 7, the rotation of the one locking claw 4 can be prevented and the deformation can be reduced, so the load applied to the pivot pin 11 can be reduced. There is almost no possibility that the pivot pin 11 will break.
In addition, even when the pivot pin 11 is broken, the connecting member 9 is screwed and fixed to the locking member 6, and one locking claw 4 is connected to the outer periphery of the saddle member 7. Since it is clamped by the surface and the inner peripheral surface of the connecting member 9, the engagement of the one locking claw 4 is not released, and the one locking claw 4 does not fall inward.

In addition, since the two locking claws 4 and 5 are provided along the axial direction of the sewage main pipe 2, the locking claws 4 and 5 are placed at the highest position on the periphery of the opening 3 of the sewage main pipe 2. It can be locked.
Further, since the two locking claws 4 and 5 are provided along the axial direction of the sewage main pipe 2, the connecting branch pipe 1 is mounted with being inclined with respect to the axis of the sewage main pipe 2. Even if it exists, the latching claws 4 and 5 are not located below the tube bottom of the attachment tube.
Furthermore, since the arcuate recess 14 a is provided in the saddle plate 14, the latching claw 5 is moved while the saddle member 7 is inclined with respect to the sewage main pipe 2 with the arcuate recess 14 a along the pipe wall surface of the main pipeline 2. It can be inserted into the opening 3 from the tip portion. At this time, even if the saddle member 7 is tilted with respect to the sewage main pipe 2 and the locking claw 5 is brought close to the opening 3, the saddle plate 14 hardly interferes with the pipe wall surface of the sewage main pipe 2. This is a useful configuration for improving the performance.

8 to 13 show another embodiment.
The connection branch pipe 1 of this embodiment includes a locking member 6 provided with two locking claws 4 and 5 that are locked to the periphery of the opening 3 of the sewage main pipe 2, and an upper portion of the locking member 6. A saddle member 7 that is fitted on the upper surface of the sewage main pipe 2 and a rubber ring receiving port 8 that is inserted into the saddle member 7 and that is connected to the attachment pipe is provided at the upper part. Connecting member 9.

As shown in FIG. 8, the two locking claws 4, 5 of the locking member 6 have a substantially L-shaped cross section, and the shape of the locking plate 10 extended substantially horizontally is the sewage main pipe 2. It is set as the arch shape along the shape of the internal peripheral surface of the periphery of the opening part 3 of this.
A pair of pivot pins 11 project from the side surface of the central portion of one of the latching claws 4, and the one latching claw 4 can rotate to the latching member 6 via the pivot pin 11. It is pivotally attached to. On the other hand, the other locking claw 5 of the locking member 6 is provided integrally with the locking member 6. In this embodiment, the two locking claws 4 and 5 are provided along the axial direction of the sewage main pipe 2.
A thread groove 12 is provided on the upper outer peripheral surface of the locking member 6 and the locking claws 4, 5. Further, as shown in FIG. 13, a locking step portion 13 is provided on the lower outer peripheral surface of the locking member 6, and the locking step portion 13 is locked to the periphery of the opening 3 of the sewage main pipe 2. Thus, the locking member 6 is prevented from falling into the sewage main pipe 2.

As shown in FIG. 8, a saddle plate 14 that is extended substantially horizontally is provided at the bottom of the saddle member 7, and the shape of the saddle plate 14 follows the shape of the upper surface of the sewage main pipe 2. It has an arch shape. In addition, an arcuate recess 14 a that is substantially equal to the pipe wall shape of the sewage main pipe 2 is formed at one end of the arch shape. The details of the arcuate recess 14a are the same as those in the first embodiment (not shown, see FIG. 3). Furthermore, a first packing 15 is fitted on the inner periphery of the lower portion of the saddle member 7.
Further, a contact step 16 is provided on the inner peripheral surface of the central portion of the saddle member 7, and an annular engagement claw 17 is projected from the inner peripheral surface of the upper end of the saddle member 7.

As shown in FIG. 8, an insertion portion 18 is provided at the lower portion of the connection member 9, and a screw portion 19 is provided on the inner peripheral surface of the insertion portion 18. The lower end of the insertion portion 18 is a contact portion 20.
Further, an engagement protrusion 21 is provided on the outer periphery of the insertion portion 18 of the connection member 9, and a second packing 22 is fitted to a portion below the engagement protrusion 21.
Further, a rubber ring receiving port 8 is provided on the upper portion of the connecting member 9, and a rubber ring 23 is fitted on the inner peripheral surface of the rubber ring receiving port 8.

When piping from the sewage main pipe 2 to the upstream side using the connection branch pipe 1 as described above, first, as shown in FIG. Is provided.
Then, the other locking claw 5 of the locking member 6 is locked to the inner peripheral surface of the peripheral edge of the opening 3 of the sewage main pipe 2 and, as shown by an arrow in FIG. By rotating inward about the pivot pin 11, the one locking claw 4 is allowed to pass through the opening 3 (see FIGS. 9 and 10).

Next, as shown in FIG. 11, after one locking claw 4 is passed through the opening 3 of the sewage main pipe 2, the one locking claw 4 is rotated outward about the pivot pin 11. Thus, the one locking claw 4 is locked to the inner peripheral surface of the peripheral edge of the opening 3.
Then, the insertion portion 18 of the connection member 9 is inserted into the saddle member 7 from above, the contact portion 20 of the connection member 9 is brought into contact with the contact step portion 16 of the saddle member 7, and the annular engagement of the saddle member 7 is performed. The connection member 9 and the saddle member 7 are assembled by engaging the claw 17 with the engagement protrusion 21 of the connection member 9.
Thereafter, as shown by an arrow in FIG. 11, the connecting member 9 is rotated, and the screw portion 19 of the insertion portion 18 of the connecting member 9 is screwed into the screw groove 12 of the locking member 6 (see FIG. 12). Then, since the outer peripheral surface of the upper portion of one of the locking claws 4 comes into contact with the inner peripheral surface of the insertion portion 18 of the connecting member 9, the rotation of the one locking claw 4 is prevented, and the one locking claw 4 cannot pass through the opening 3 of the sewage main pipe 2.

At this time, when the screw portion 19 of the insertion portion 18 of the connection member 9 is screwed into the screw groove 12 of the locking member 6 and the locking claws 4, 5, the locking claws 4, 5 of the locking member 6 are obtained. Is raised relative to the connection member 9 and the saddle member 7, and the opening 3 of the sewage main pipe 2 is formed by the upper surface of the locking plate 10 of the locking claws 4 and 5 and the lower surface of the saddle plate 14 of the saddle member 7. The connecting branch pipe 1 is securely fixed to the sewage main pipe 2.
In this case, since the first packing 15 is interposed between the inner peripheral lower surface of the saddle member 7 and the upper surface of the sewage main pipe 2, the saddle member 7 and the sewage main pipe 2 are The space between them is watertight. Further, since the second packing 22 is interposed between the inner peripheral surface of the saddle member 7 and the outer peripheral surface of the connecting member 9, the second packing 22 causes the saddle member 7 to be connected between the connecting member 9. Is in a watertight state (see FIGS. 12 and 13).

  After attaching the connection branch pipe 1 to the predetermined position of the sewage main pipe 2 and branching the sewage main pipe 2 in this manner, the connection pipe is inserted into the rubber ring receiving port 8 of the connection member 9 of the connection branch pipe 1 and connected. Piping work is completed.

The above connection branch pipe 1 can achieve the same effects as those of the first embodiment.
That is, in the connecting branch pipe 1, the two locking claws 4 and 5 are reliably locked to the peripheral edge of the opening 3 of the sewage main pipe 2 by screwing the connecting member 9 to the locking member 6. Therefore, it is possible to prevent the occurrence of poor locking and water leakage. Further, in the connection branch pipe 1, since the connection member 9 cannot be screwed to the locking member 6 unless one locking claw 4 is locked, the locking claws 4, 5 are locked. Forgetting can be prevented with certainty, and therefore the reliability of construction can be improved. In addition, since the construction work is simple and easy in the connection branch pipe 1 described above, it is possible to save labor in the piping work.

  In addition, when the connecting member 9 and the saddle member 7 are assembled, the annular engaging claw 17 of the saddle member 7 is engaged with and held by the engaging protrusion 21 of the connecting member 9. The connecting member 9 and the saddle member 7 are not separated. Further, when the connecting member 9 and the locking member 6 are assembled, the screw portion 19 of the insertion portion 18 of the connecting member 9 is fixed by screwing into the screw groove 12 of the locking member 6. The connecting member 9 and the locking member 6 are not separated in the attached state.

  Further, since one locking claw 4 is pivotally and integrally pivotally attached to the locking member 6 via the pivot pin 11, the one locking claw 4 can be smoothly rotated. Since one locking claw 4 does not fall during the work, the construction work can be performed smoothly, and the workability of the construction is improved.

Still further, when the screw portion 19 of the insertion portion 18 of the connection member 9 is screwed into the screw groove 12 of the locking member 6, the upper portion of one locking claw 4 is the inner peripheral surface of the insertion portion 18 of the connection member 9. Since the rotation to the outside of the upper portion of the one locking claw 4 can be prevented by contacting the pin, the load on the pivot pin 11 can be reduced, and the pivot pin 11 may be broken. rare.
Furthermore, in this embodiment, contact surfaces 25 are formed on the inner surfaces of both upper ends of one of the locking claws 4, and both upper end portions of the locking member 6 on the side where the one locking claw 4 is attached. A contact surface 26 is formed on the outer surface (see FIGS. 9 and 10). Therefore, when the screw portion 19 of the insertion portion 18 of the connecting member 9 is screwed into the screw groove 12 of the locking member 6, the contact portion 25 of the one locking claw 4 and the contact surface 26 of the locking member 6. Is prevented from rotating to the inside of the upper portion of the one locking claw 4.

In addition, since the two locking claws 4 and 5 are provided along the axial direction of the sewage main pipe 2, the locking claws 4 and 5 are placed at the highest position on the periphery of the opening 3 of the sewage main pipe 2. It can be locked.
Further, since the two locking claws 4 and 5 are provided along the axial direction of the sewage main pipe 2, the connecting branch pipe 1 is mounted with being inclined with respect to the axis of the sewage main pipe 2. Even if it exists, the latching claws 4 and 5 are not located below the tube bottom of the attachment tube.

  The embodiments of the present invention have been described above by way of examples. However, the scope of the present invention is not limited to these embodiments, and can be changed or modified in accordance with the purpose within the scope of the claims. It is.

  For example, in the first embodiment shown in FIGS. 1 to 7, the rubber ring receiving port 8 is described as being provided on the upper portion of the connecting member 9 as a connection port to which the attachment pipe is connected. As shown in FIGS. 14 and 15, a swingable rubber ring receiving port 8 may be provided in the upper part of the connecting member 9 as a connecting port to which the attachment pipe is connected.

  Moreover, in Example 2 shown in FIGS. 8-13, although the rubber ring receiving port 8 was demonstrated as the connection port to which a mounting pipe is connected provided in the upper part of the connection member 9, it is other than the said Example. As shown in FIG. 16, a rubber flexible receiving port 8 may be provided on the upper portion of the connecting member 9 as a connecting port to which the attachment pipe is connected.

  Furthermore, an adhesive receiving port (not shown) may be provided in the upper part of the connecting member 9 as a connecting port to which the attachment pipe is connected, other than the above embodiment.

  Furthermore, as shown in FIG. 16, a handle 24 that serves as a clue when rotating the connection member 9 may be provided on the outer peripheral surface of the connection member 9. Further, instead of providing the handle 24, a protrusion (not shown) or a hole (not shown) may be provided as a clue when the connecting member 9 is rotated.

  In the above embodiment, one locking claw 4 has been described as being pivotally mounted on the locking member 6 via the pivot pin 11. The claws 4 and 5 may be pivotally attached to the locking member 6 via the pivot pin 11.

  Furthermore, in the above embodiment, it has been described that the connecting branch pipe 1 is used when connecting the attachment pipe, which is a branch pipe line, to the sewage main pipe 2, which is the main pipe line. The connecting branch pipe 1 may be used when connecting another branch pipe (not shown), which is a branch pipe line, to the vertical pipe (not shown).

  INDUSTRIAL APPLICABILITY The present invention can be used industrially as a connection branch pipe that can improve the certainty of construction and can save labor in piping work.

3 is a perspective view of a locking member according to Embodiment 1. FIG. 3 is an exploded side cross-sectional view of a connection branch pipe of Example 1. FIG. It is explanatory drawing which shows the planar view of the saddle member of Example 1, and the condition at the time of inserting a latching claw in an opening part. It is explanatory side sectional drawing of the connection branch pipe (state which rotated the latching claw) of Example 1. FIG. It is a description sectional side view of the connection branch pipe (state which latched the latching claw) of Example 1. FIG. It is a description sectional side view of the connection branch pipe of Example 1. FIG. FIG. 3 is an explanatory front sectional view of a connection branch pipe of Example 1. It is a decomposition | disassembly side sectional view of the connection branch pipe of Example 2. FIG. It is explanatory side sectional drawing of the connection member (state which rotated the latching claw) of Example 2. FIG. It is a description plane sectional view of the connection member (state which turned the latching claw) of Example 2. FIG. It is a description sectional side view of the connection branch pipe of Example 2 (state which latched the latching claw). It is a description sectional side view of the connection branch pipe of Example 2. FIG. FIG. 5 is an explanatory front sectional view of a connection branch pipe of Example 2. FIG. 6 is an explanatory side cross-sectional view of a connection branch pipe of a modified example of the first embodiment. FIG. 6 is an explanatory front sectional view of a connection branch pipe according to a modification of the first embodiment. FIG. 10 is an explanatory side cross-sectional view of a connection branch pipe according to a modification of Example 2.

Explanation of symbols

1 Connecting branch 2 Main pipeline (sewage main)
DESCRIPTION OF SYMBOLS 3 Opening part 4 One latching claw 5 The other latching claw 6 Locking member 7 Saddle member 8 Connection port (rubber ring receiving port)
9 Connecting member 11 Pivoting pin

Claims (2)

A connecting branch for connecting a branch pipe to the main pipe,
A locking member provided with a locking claw locked to the periphery of the opening of the main pipeline, a saddle member fitted on the locking member and mounted on the main pipeline, and inserted into the saddle member And a connection member provided with a connection port to which the branch pipe line is connected, and the rotation of the locking claw is prevented by screwing the connection member to the locking member. And the locking claw cannot pass through the opening of the main pipeline,
The locking member has a fixed claw formed on one side, and on the other side, is pivotally mounted on the locking member via a pivoting pin to form a rotating claw. The pivoted locking claw The latching claw is allowed to pass through the opening of the main pipe line, and the saddle plate of the saddle member is formed with an arc-shaped recess on the side corresponding to the fixed claw. Connecting branch pipe.   2. The connection branch pipe according to claim 1, wherein the arcuate recess is substantially equal to a pipe wall shape of the main pipeline.

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