KR20070051146A - Rotate join type branch socket - Google Patents

Abstract

The present invention is a branch pipe body which is mounted in the punched hole 10 of the main pipe is connected to the branch pipe 50, the branch pipe 50 to be connected to the punched hole 10 of the main pipe is inserted and fastened The fastening hole 110 is formed in the lower portion of the body portion 120 and the body portion 120 having an inner diameter different from that of the branch pipe fastening portion 110 and the perforated hole 10 of the main pipe. Branch sleeve 100 forming a portion 130; An arched skirt 210 in close contact with the perforated hole 10 of the main pipe, and formed in an upper portion of the arched skirt 210 and formed to communicate with the perforated hole 10 of the main pipe, and a sliding hole on a wall thereof. Saddle 200 formed a hollow circular protrusion 220 is formed 222; A cylindrical shape forming a hollow is formed in the outer periphery of the body is a projection 310 which is inserted into the sliding hole 222 can be rotated along the inner circumference of the sliding hole 222, the branch sleeve on the inner circumference An elevator 300 to which the body part 120 of 100 is integrally rotated with the branch sleeve 100 by the rotation of the protrusion 310 inserted into the sliding hole 222; And a packing part 400 held between the inner circumferential bottom of the hollow circular protrusion 220 in the saddle 200 and the upper portion of the hole fastening part 130 on the outer circumference of the branch sleeve 100. It relates to a branch of the rotation fastening method characterized in that.

Saddle, Branch, Packing Part, Elevator, Branch Sleeve, Main Pipe, Branch Pipe

Description

ROTATE JOIN TYPE BRANCH SOCKET}

1 is an exploded perspective view of a branch pipe attachment apparatus according to the prior art,

2a to 2c is a cross-sectional view and a perspective view for explaining the configuration of the branch sleeve of the branching hole of the rotation fastening method according to the present invention,

3a to 3c is a cross-sectional view and a perspective view for explaining the configuration of the saddle of the rotational fastening branch according to the invention,

4a to 4c is a plan view and a perspective view for explaining the configuration of the elevator of the rotational fastening branch according to the invention,

5a to 5b is a cross-sectional view and a perspective view for explaining the packing of the rotational fastening branch according to the invention,

6 is an exploded perspective view illustrating a state in which branch components, saddles, elevators, and packing parts, each of which is a branch in a rotational fastening method according to the present invention, are coupled to a perforated hole of a main pipe;

7a to 7b is a cross-sectional view and a perspective view showing a state before the rotational fastening branch is placed in the drilled hole of the main pipe is fastened according to the present invention,

8a to 8b is a cross-sectional view and a perspective view showing a state in which the rotational fastening branch is placed in the drilled hole of the main pipe is fastened according to the present invention,

9 is a flowchart illustrating a state in which the branch pipe is fastened to the main pipe and the branch pipe is connected to the branch pipe by using the present invention.

           <Description of the symbols for the main parts of the drawings>

100 ... branch sleeve

200 ... birds

300 ... elevator

400 ... Packing

The present invention relates to a branch of the rotary fastening method, and more particularly, to a branch of the rotary fastening method used for branching the branch pipe to the main pipe buried underground.

In the main parts of the main pipe, pipes (PDS), 90 ° elbows (PDE 90 °), 45 ° elbows (PDE 90) in the form of injection moldings or secondary processed products are used to connect pipes to each other or to fix members such as manholes. °), T-shaped tee socket (PDT) and the like.

Since these fittings are connected to the ends of the main pipe by inserting method, whenever the installer branches another pipe member at the desired place, it is very inefficient to perform the joining work after cutting in consideration of the pipe length. At the same time, the amount of use is large, which is uneconomical.

Therefore, in consideration of these various problems, the actual pipe construction site drills a hole of a predetermined diameter in the main pipe (or main pipe), and then connects or branches the main pipe from the main pipe by mounting or mounting a branch (or branch pipe). have.

In general, if branch outlets are not used for the connection of sewer pipes, problems such as closure of the main pipes may occur when the branch pipes are excessively inserted into the main pipes. Problems such as leakage and inflow of groundwater may occur when miscontact or the like occurs.

Conventional techniques related to branch outlets include branch branch socket attachments, branch connection clamps, branch sewer pipe couplers in main sewer pipes, branch pipes for pipes, connecting members of main sewer pipes and branch sewer pipes, watertight distribution mechanisms for PVC DC, DC Cast iron pipes for watertight connections, mortar concrete forks (C / T).

For example, the branch branch socket attachment device according to the prior art, as shown in Figure 1 and disclosed in the Republic of Korea Utility Model Registration No. 307725 in 2003, the perforated hole 10 for branch pipe 50 in the main pipe 14 The inner washer 3 having a larger diameter was divided into two parts to enter the perforated hole 10 of the main pipe, and the packing 7 was formed on the upper part of the inner washer wing piece 31 and the inner washer end face 33 which was bisected. 8), and the packing 9 is attached to the inner surface 24 of the protruding portion of the branch branch socket 2, and the bisected inner washer 3 and the tubing in which the blade pieces 31 extend over the inner surface of the hole 10 are attached. When the branch pipe socket 2 in close contact with the outer surface 11 is tightened with the nut or the female screw portion 5 of the inner washer 3 with a plurality of bolts 4, the packing 7 on the upper surface of the inner washer blade piece 31 ) Is a packing (8) between the inner washer end face 33, which is pressed against the inner surface 12 of the periphery of the hole (10) and bisected, and outside the vertical tube protrusion (36) of the inner washer (3). (34) or the inner surface 35 is in close contact with the packing (9) attached to the inner surface of the protrusions 24 formed on the lower surface of the branch pipe socket (2) or the inner surface of the protrusion frame 22 to the packing (7, 8, 9) As a result of being watertight, a bent portion 400 such as a hinge or a spring is formed on the divided inner washer wing piece 31, and the divided inner washers 3 are connected to each other and bent in a V-shape to form a hole ( 10) It is configured to press the packing 8 between the bisected inner washer end face 33 when the inner washer 3 bisected in the hole 10 is opened in a circular shape.

The prior art branch including the branch pipe socket attachment device reduces the sewage treatment cost by blocking the inflow of water, prevents the leakage of sewage, prevents underground contamination, reduces the cost of construction and the convenience of after-care, and pre-establishes the expected point in the development of the site. As a result, the company expected macro-conceptual effects such as post-budget reduction and construction convenience, but has the following technical problems.

That is, the conventional bifurcation spherical hinges are provided in a bisected inner washer, the inner washer is split into two and inserted into the perforated hole of the main pipe, and then restored to its original shape by manual operation. Not only the insertion is inconvenient, but also the watertight processing of the protruding hinge portion is very difficult, there is a disadvantage that takes a lot of insertion work.

In addition, according to the conventional bifurcation, the bifurcated inner washer and the branch pipe socket are compressed using a plurality of bolts, and thus, a separate bolt tightening tool is inevitably used, and the bolt assembly construction takes a long time. Many difficulties exist in shortening the construction period. In particular, since the bolt provides a relatively narrow threaded surface, the pressing force in the up-and-down direction of the inner washer and the branch pipe socket decreases relatively, or when the bolt is tightened with excessive force, the male thread of the bolt wears the female thread of the inner washer. This exists.

Further, in the conventional branching port, in the case of the branching type in which the inner washer or the like enters into the perforated hole of the main pipe, the connection between the pipe members having a large diameter of the branch pipe and a small diameter of the main pipe, that is, a large diameter in the main pipe of small diameter There is a drawback that cannot be used for branch connections to branch pipes of diameter.

Accordingly, an object of the present invention for solving the above-mentioned problems is to enable fast fastening in the hole drilled in the main pipe by branching holes consisting of branch sleeves, saddles, elevators, and packing parts, thereby simplifying construction and shortening the construction period. To provide a branch of the rotation fastening method that can be.

In addition, another object of the present invention is to provide a branch of the rotational fastening method to have a structure that can be easily and quickly installed from the main pipe to a good sealing state in the fastened state to prevent the occurrence of leakage.

The object of the present invention as described above is a branch pipe fastening portion which is inserted into the branch pipe to be connected to the perforated hole of the main pipe is inserted into the branch pipe is mounted in the perforated hole of the main pipe and the branch pipe body A branch sleeve formed at a lower portion of the body portion and having a bore portion fastened to the perforated hole of the main pipe, the body portion having an inner diameter different from the joint portion; An arcuate skirt in close contact with the perforated hole of the main pipe, and saddles formed on an upper portion of the arcuate skirt and formed to communicate with the perforated hole of the main pipe, the hollow circular protrusion having a sliding hole formed on a wall thereof; A cylindrical shape that forms a hollow, the outer periphery of the body is formed into a projection that can be inserted into the sliding hole to rotate along the sliding hole, the inner periphery of the body of the branch sleeve is fastened to the projection inserted into the sliding hole An elevator which is integrally rotated with the branch sleeve by the rotation of the branch sleeve; The saddle is achieved by a branching of the rotational fastening method characterized in that it comprises a packing portion sandwiched between the inner circumferential hem of the hollow circular protrusion in the saddle and the top of the hole fastening portion on the outer circumference of the branch sleeve.

Hereinafter, exemplary embodiments of the present invention will be described with reference to FIGS. 2 to 9.

2a to 2c are cross-sectional views and perspective views for explaining the configuration of the branch sleeve of the rotational fastening branch according to the present invention, Figures 3a to 3c is a branch of the rotary fastening method according to the present invention Sectional drawing and perspective view for demonstrating the structure of a bird. In addition, Figures 4a to 4c is a plan view and a perspective view for explaining the configuration of the elevator of the rotational fastening branch according to the present invention, Figures 5a to 5b is a packing portion of the branching hole of the rotation fastening method according to the present invention It is sectional drawing and a perspective view for demonstrating. FIG. 6 is an exploded perspective view illustrating a state in which branch components, saddles, elevators, and packing parts, which are components of the rotational fastening branch according to the present invention, are coupled to the perforated holes of the main pipe, and FIGS. 7B is a cross-sectional view and a perspective view showing a state before the rotational fastening branch according to the present invention is placed in the drilled hole of the main pipe before the fastening, Figures 8a to 8b is a branching of the rotary fastening method according to the present invention 9 is a cross-sectional view and a perspective view showing a state in which a fastened hole is fastened, and FIG. 9 is a flowchart illustrating a state in which branch pipes are connected to main pipes and branch pipes are connected to branch pipes using the present invention.

The present invention has one end that can be connected to the branch pipe 50 and the other end is a branch sleeve for insertion and fastening into the perforated hole 10 of the main pipe, the saddle is pressed and fixed to the outer surface of the main pipe, the saddle inner peripheral An elevator which is rotatably mounted on the inner circumference thereof so that the branch sleeve is engaged and integrally operated so that the branch sleeve is fastened to the perforated hole of the main pipe, and a packing part for watertightness between the branch sleeve and the saddle. It means the assembly made up.

Hereinafter, each detailed component of this invention is demonstrated in detail.

As shown in Figure 2a and 2b, the branch sleeve 100 of the basic example, the upper portion is composed of a branch pipe fastening portion 110, based on the first engaging end 113, the lower portion is composed of a body portion 120 On the basis of the second locking end 122, the upper portion of the body portion 120 and the lower portion is formed of a hole fastening portion 130.

The branch pipe fastening part 110 has a tubular shape having different sizes of inner diameters (for example, an upper inner diameter is a large diameter and a lower inner diameter is a small diameter), and an extended inner circumferential surface 114 at an inlet side to facilitate insertion of the branch pipe 50. ).

The first engaging end 113 is formed by winding the outer circumference of the branch sleeve 100 and is in contact with the saddle 200 to be described below so that the branch sleeve 100 is formed in the perforated hole 10 of the main pipe. It provides support against the force to be inserted and downward.

A plurality of reinforcing ribs 111 extending in the vertical direction at the lower outer periphery of the branch pipe fastening part 110 may be formed to handle stress loads and increase durability when the branch pipes are coupled.

The body portion 120 is a tubular shape, as shown in Figures 2a and 2b is composed of a flat outer peripheral surface is configured to be inserted and fastened to the inner circumference of the elevator 300 to be described below, the elevator Watertightness is maintained by the packing (P) that can be configured on the inner circumference of the 300, as well as by pressing the body portion 120 to enable the branch sleeve 100 and the elevator 300 to be integrally operated.

In addition, as shown in FIG. 2C, the body portion 120 may include a screw portion 121. In this case, as shown in FIG. 4C, a screw portion facing the screw portion 121 may also face the inner circumference of the elevator 300. 320 may be configured by combining the body portion 120 and the elevator 300 by rotation.

The second engaging end 122 formed at the end of the body portion 120 and winding the outer circumference has packing (P) at the end of the inner circumference of the elevator 300 as shown in FIGS. 7A and 8A. When provided with the second engaging end 122 and the upper surface of the packing (P) to be in contact with the watertight as well as the function of supporting the downward force of the branch sleeve (100).

In addition, as shown in FIG. 2, the hole fastening part 130 has the same bottom end as the shape of the punched hole 10 of the main pipe, and as shown in FIG. 6, respectively, in the radial direction X of the main pipe. The mountain part is formed, and it consists of an arcuate shape in which the valley part was formed in the longitudinal direction Y of the main pipe, respectively. In addition, the hole fastening portion 130 is also configured in a tubular shape, the diameter of the outer periphery is preferably configured to be slightly smaller than the diameter of the outer periphery of the body portion (120). In addition, the lower end of the hole fastening portion 130, as shown in Figure 2 and Figure 9 and wound around the outer periphery is inserted into the perforated hole 10 of the main pipe is configured to catch the inner periphery of the main pipe ( A plurality of fastening units 131 composed of 131a and a flat plate portion 131b contacting the inner circumference of the perforated hole 10 are attached.

The locking jaw 131a is configured to protrude in a perpendicular direction from the flat plate portion 131b to form a downward slope.

The sum of the diameter of the outer periphery of the hole fastening portion 130 and the thickness of the plate unit 131b of the fastening unit 131 attached to both ends in the radial direction is the same as the diameter of the perforated hole 10 of the main pipe. It is preferable to construct. By such a configuration, the fastening unit 131 is elastically fastened by pressure to the hole 10 drilled in the main pipe, so that the inner circumference of the main pipe is applied to a portion projecting in the perpendicular direction of the locking jaw 131a, and the flat plate The portion 131b is configured to abut on the inner circumference of the perforated hole 10 of the main pipe.

As shown in FIGS. 3A to 3C, the saddle 200 includes the branch sleeve 300 in which an elevator 300 is placed on its inner circumference and is integrated with the elevator 300 by rotation of the elevator 300. The rotation of the 100 serves as a frame for holding the elevator 300 so that the hole fastening portion 130 can be fastened as mentioned above in the punched hole 10 of the main pipe.

To this end, the saddle 200 is formed in a saddle shape as a whole, and forms a hollow circular protrusion 220 having a diameter corresponding to the outer periphery of the elevator (300).

The lower portion of the hollow circular protrusion 220 is formed with a rectangular arcuate skirt 210 extending outward corresponding to the circumferential rate of the outer circumference of the main pipe.

The square arcuate skirt 210, which is a portion in contact with the outer circumference of the main pipe in the saddle 200, has a radius corresponding to the size of the outer diameter of the main pipe, and a hollow circular protrusion, which is another portion, in contact with the outer diameter of the elevator 300. 220 has a diameter corresponding to the size of the outer diameter of the elevator.

Here, the diameter corresponding to the size means a diameter having the same or similar size as that of the outer diameter of the elevator.

In addition, the wall 221 of the hollow circular protrusion 220 is formed with a sliding hole 222 is inserted into the projection 310 of the elevator 300 to be described below.

As shown in FIG. 3, the sliding holes 222 are formed in the longitudinal direction Y in the radial direction X of the main pipe, and two are formed to correspond to each other. In addition, the sliding hole 222 is configured to form an upward inclination in the longitudinal direction (Y) in the radial direction (X) of the main pipe, which is a projection 310 inserted into the sliding hole 222 is the sliding hole ( As the protrusion 310 moves upwardly in the longitudinal direction Y in the radial direction X, the protrusions 310 move toward the end of the longitudinal direction Y to move along the inner circumference of the 222. An integrally rotating branch sleeve 100 is rotated while being lifted upward, and thus, the fastening unit 131 attached to the bottom of the hole fastening part 130 by rotating the branch sleeve 100 is lifted upward. The locking jaw 131a is configured to be caught inside the tube of the perforated hole 10 of the main pipe.

In addition, the sliding hole 222 may be provided with one or more fixing grooves 223, which is provided with a fixing pin 311 that can slide back and forth in the projection 310, the fixing pin 311 The projection 310 is configured to be fixed on the sliding hole 222 by inserting the slide into the fixing groove 223 in all directions.

As shown in FIG. 4, the elevator 300 has a cylindrical shape that forms a hollow and is inserted into the sliding hole 222 at the outer circumference of the body and may be rotated along the inner circumference of the sliding hole 222 ( 310 is formed to protrude, the inner circumference of the body portion 120 of the branch sleeve 100 is fastened by the rotation of the projection 310 inserted into the sliding hole 222 and the branch sleeve 100 and It is configured to rotate integrally.

Such an elevator 300 is configured in a cylindrical shape having a hollow, but as shown in Figure 4 when one side of the side is configured as an open shape when the elevator 300 is placed on the inner circumference of the saddle 200 Thereby pressing the outer periphery of the elevator 300 in the center direction by the release of the projection 310 is inserted into the sliding hole 222 to release the pressure to return the elevator 300 to the circle by the elastic restoring the saddle It can be configured to be placed in the inner circumference of the (200).

In addition, the inner periphery of the elevator 300 is provided with one or more packing grooves 330 in which the packing (P) can be placed to configure the body portion 120 in a flat shape as shown in Figures 2a and 2b In this case, the packing (P) placed in the packing groove 330 acts as a watertight, as well as by pressing the body portion 120 is able to operate the branch sleeve 100 and the elevator 300 integrally. . In particular, the packing groove 330 is configured at the end of the inner circumference of the elevator 300 as shown in Figures 4b, 4c, 7a and 8a by the second catch of the branch sleeve 100 as mentioned above The stage 122 is preferably configured to be supported on the upper surface of the packing (P).

In addition, in the inner circumference of the elevator 300, the branch sleeve 100 and the elevator by forming a threaded portion 320 corresponding to the threaded portion 121 to the body portion 120 as mentioned above It is possible to fasten the 300 by rotation.

The protrusion 310 is configured to rotate on the inner circumference of the sliding hole 222 as a shape projecting on the outer circumference of the elevator 300, it may be configured in a rectangular shape as shown in FIG. It is preferable that the sliding hole 222 is configured to be equal to or slightly smaller than the height of the sliding hole 222. As mentioned above, the fixing pin 311 is formed on the upper surface of the protrusion 310, but the fixing pin 311 is the protrusion. By configuring the rail 312 into which the fixing pin 311 may be inserted into the upper surface of the 310, the fixing pin 311 may be inserted into the rail 312 so as to slide back and forth. By the above configuration, the upper part of the fixing pin 311 is configured to protrude and slide on the upper surface of the protrusion 310, and the protruding fixing pin 311 is fixed to the sliding hole 222 mentioned above. It is inserted into the groove 223 by sliding in all directions, and in this way, the protrusion 310 is fixed on the inner circumference of the sliding hole 222.

In addition, the protrusion 310 may further include a bar insertion groove 313 on the front surface so as to easily rotate the protrusion 310 by inserting a rotary bar (B).

As shown in FIG. 5, the packing part 400 is inserted between the branch sleeve 100 and the saddle 200, and thus has excellent ductility, elasticity, and elastic resilience to secure watertight performance. It is made of watertight material or synthetic watertight material.

More specifically, the packing part 400 is formed in an inverted V shape as shown in FIG. 5, and the fastening unit 120 as the hole fastening part 120 of the branch sleeve 100 is shown in FIGS. 7A and 8A. The flat portion 131b and the saddle 200 of the 131 may be configured to be sandwiched between the contact portion between the hollow circular protrusion 220 and the arcuate skirt 210, the packing portion 400 of the The bottom part can be configured to be placed on the outer circumference of the main body.

By the combination of the respective components as described above to complete the branch of the rotational fastening method of the present invention will be described below the operation relationship when connecting the main pipe and the branch pipe using the branching of the rotational fastening method of the present invention. do.

6 to 9 show that each branch sleeve 100, saddle 200, elevator 300 and packing unit 400 is combined to form a branch of the present invention, the branch is a perforated hole of the main pipe Show the state of binding to (10).

First, FIG. 7 shows a state in which the bifurcation of the present invention is placed in the perforated hole 10 of the main pipe, and is still fastened to the perforated hole 10 of the main pipe by the fastening unit 131 of the branch sleeve 100. It shows the whole state. That is, in the state where the projection 310 is placed in the radial direction X of the main pipe on the inner circumferential edge of the sliding hole 222, the branched hole of the present invention is placed in the punched hole 10 of the main pipe, and the punched hole of the main pipe is formed. As shown in FIG. 7A, the bottom end of the branch sleeve 100 having the same shape as that of (10) is located as the bottom end of the branch sleeve 100 in the radial direction X of the main pipe, and a portion corresponding to the bone portion is located. As the bottom of the branch sleeve 100 in the longitudinal direction (Y) is a portion corresponding to the mountain portion is inserted so as to stagger 90 degrees.

Next, FIG. 8 shows a state in which the bifurcation of the present invention is fastened to the perforated hole 10 of the main pipe, that is, the sliding in the state of placing the present invention in the perforated hole 10 of the main pipe as shown in FIG. 7. In the state where the projection 310 is rotated in the longitudinal direction (Y) of the main pipe on the inner circumference of the hole 222, the hem of the branch sleeve 100 having the same shape as the punched hole 10 of the main pipe is shown in FIG. 8A. As can be seen, a portion corresponding to the mountain portion as the bottom of the branch sleeve 100 is located in the radial direction X of the main pipe, and corresponds to the valley portion as the bottom of the branch sleeve 100 in the longitudinal direction Y of the main pipe. The part is positioned so that the perforated hole 10 of the main pipe and the hem of the branch sleeve 100 to coincide. At this time, as mentioned above, since the sliding hole 222 is configured to form an upward inclination in the longitudinal direction (Y) in the radial direction (X) of the main pipe, the protrusion 310 is in the longitudinal direction (Y) of the main pipe. By moving to the end, the branch sleeve 100, which is integrally rotated with the elevator 300, is raised upward, and the locking jaw 131a of the fastening unit 131 attached to the hole fastening unit 130 is drilled in the main pipe. It is configured to be caught inside the tube of the formed hole 10 so that the branching hole of the present invention is strongly fastened to the perforated hole 10 of the main pipe. In addition, the protrusion 310 is rotated so that the locking jaw 131a of the fastening unit 131 is completely engaged in the perforated hole 10 of the main pipe, and then the fixing pin 311 is fixed to the fixing groove 223. The protrusion 310 is fixed on the sliding hole 222 by inserting.

The present invention constructed as described above is seen in the perforated hole of the main body by rotating the elevator and the branch sleeve integrally by rotating the projection projecting out of the saddle in the state of mounting the branch of the present invention to the perforated hole of the main pipe. Since the branching hole of the invention can be fastened by installing only the branching hole which can connect the branch pipes by rotating only the projection without any additional manipulation, the construction is easy and there is an advantage that the construction period can be shortened.

In addition, the present invention allows the fastening unit of the branch sleeve to be fastened to the perforated hole of the main pipe by rotating the protrusion of the elevator, without requiring a separate fixing member in attaching the branch to the perforated hole of the main pipe. It has the advantage of providing perfect watertightness.

Claims (10)

In the branch hole which is mounted in the perforated hole 10 of the main pipe and connected with the branch pipe 50, The branch pipe fastening part 110 is inserted into and fastened to the branch pipe 50 to be connected to the perforated hole 10 of the main pipe, and the body part 120 having an inner diameter different from that of the branch pipe fastening part 110 and the Branch sleeve 100 is formed in the lower body portion 120 to form a hole fastening portion 130 is fastened to the punched hole 10 of the main pipe; An arched skirt 210 in close contact with the perforated hole 10 of the main pipe, and formed in an upper portion of the arched skirt 210 and formed to communicate with the perforated hole 10 of the main pipe, and a sliding hole on a wall thereof. Saddle 200 formed a hollow circular protrusion 220 is formed 222; A cylindrical shape forming a hollow is formed in the outer periphery of the body is a projection 310 which is inserted into the sliding hole 222 can be rotated along the inner circumference of the sliding hole 222, the branch sleeve on the inner circumference An elevator 300 to which the body part 120 of 100 is integrally rotated with the branch sleeve 100 by the rotation of the protrusion 310 inserted into the sliding hole 222; And In the saddle 200 comprises a packing portion 400 which is sandwiched between the inner circumferential bottom of the hollow circular protrusion 220 and the upper portion of the hole fastening portion 130 on the outer circumference of the branch sleeve 100 Rotational fastening branch characterized in that. The method of claim 1, Branch branch of the rotation fastening method characterized in that the reinforcing ribs 111 extending in the vertical direction on the outer periphery of the branch pipe fastening portion 110 in the branch sleeve 100 is further formed. The method of claim 1, In the branch sleeve 100, the outer circumference of the body portion 120 and the inner circumference of the elevator 300 are provided with thread portions 121 and 320, respectively, so that the branch sleeve and the elevator are fastened by rotation. Branch of rotary fastening method. The method of claim 1, Branch in the rotational fastening method, characterized in that the inner periphery of the elevator 300 is configured with one or more packing grooves (330) in which the packing (P) can be placed. The method of claim 1, The hole fastening portion 130 has a bottom end that is configured in the same shape as the perforated hole 10 of the main pipe, and the outer circumference of the bottom end is inserted into the perforated hole 10 of the main pipe to be caught by the inner circumference of the main pipe. Branching of the rotary fastening method characterized in that one or more fastening unit (131) consisting of a locking projection (131a) and a flat plate portion (131b) in contact with the inner circumference of the punched hole (10) of the main pipe is attached. The method of claim 1, The sliding hole 222 is formed in the longitudinal direction (Y) of the main pipe in the radial direction (X) of the main pipe, characterized in that configured to form an upward slope in the longitudinal direction (Y) of the main pipe in the radial direction (X) of the main pipe. Branch of rotary fastening method. The method of claim 6, The sliding hole 222 is provided with one or more fixing grooves 223, the projection 310 is provided with a fixing pin 311 that can slide back and forth, the fixing pin 311 is the fixing groove Sliding in the forward direction to the (223) branching of the rotational fastening method, characterized in that the projection 310 is fixed on the sliding hole (222). The method of claim 1, The elevator 300 is configured to have a cylindrical shape with a hollow, but one side of the side is configured in the shape of an open shape so as to be elastically fastened to the saddle 200, characterized in that the bifurcation of the rotation fastening method. The method of claim 1, The protrusion 310, the insertion hole of the rotation fastening method, characterized in that the bar insertion groove 313 is further configured on the front surface so as to easily rotate the protrusion 310 by inserting the rotary bar (B). The method of claim 1, The packing part 400 is formed in an inverted V shape so that an elastic force is formed between an inner circumferential hem of the hollow circular protrusion 220 and an upper portion of the hole fastening part 130 on the outer circumference of the branch sleeve 100. Branching of the rotation fastening method characterized in that configured to facilitate the pinching by.

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