KR100696448B1 - Elastic hinge type branch socket for double walled pipe - Google Patents

Abstract

The present invention is to provide a resilient hinged double-wall pipe branch using a branch sleeve and an elevator screw directly, the packing portion as an elastic hinge of the elevator.

The elastic hinged double wall pipe branch of the present invention has branch diameters (100, 100a) having internal diameters of different sizes on the upper portion, and forming threaded portions (105, 105a) on the lower portion; Saddles (110, 110a, 110b) to form a hollow circular protrusion 112 around the engaging hole 113 of the arcuate skirt 111; Another threaded portion 125, 125a, which is screwed into the shape of either male or female threads corresponding to the threaded portion of the branch sleeve, is formed on the inner circumference of the bisected body 123, and the bisected protruding edges 129, 129a. An elevator (120, 120 ', 120a, 120a', 120b, 120b ') formed at an outer periphery of the bottom of the body (123); Forming a U-shaped cross-sectional shape, such as the inner space 139, in the lower portion 138 to which the protruding edge is coupled, the packing parts 130, 130a, 130b, 130c coupled to surround a part of the inner circumference of the elevator It includes, the packing portion is rotated and restored like an elastic hinge and is coupled to play the role of watertight.

Double Wall Pipe, Saddle, Branch, Packing Part, Elevator, Sleeve

Description

Elastomeric hinged double wall pipe branch {ELASTIC HINGE TYPE BRANCH SOCKET FOR DOUBLE WALLED PIPE}             

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

2a to 2c is a plan view and a cross-sectional view for explaining the configuration of the branch sleeve of the elastic hinged double wall pipe branch according to the present invention;

3a to 3e is a plan view and a cross-sectional view for explaining the configuration of the birds,

4A to 4D are cross-sectional views for explaining the configuration of an elevator,

5A to 5D are sectional views and a bottom view for explaining a packing part;

6a and 6b are cross-sectional views for explaining the operating state of the packing unit and the elevator in combination;

7A to 7C are exploded and combined cross-sectional views of an elastic hinged double wall pipe branch according to the present invention.

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

100, 100a ... branch sleeve

110, 110a, 110b ... birds

120, 120 ', 120a, 120b', 120b, 120b '... elevator

130, 130a, 130b, 130c ... packing part

The present invention relates to an elastic hinged double wall pipe branch, more specifically, an elastic hinged double wall pipe branch used for branching branch pipes to main pipes such as corrugated pipes, corrugated pipes, and double wall pipes buried underground. It is about.

The double wall pipe is extruded into the outer wall corresponding to the outer pipe and the inner wall corresponding to the inner pipe, and then merged to have a double wall in one piece. Usually, various sizes and materials (materials) ranging from 10 cm in diameter to 60 cm in diameter and 6 m in length are used. It has a smooth tubular inner wall shape and an outer wall shape that is corrugated or periodically bent like a plurality of O-rings while maintaining a predetermined distance in the longitudinal direction.

A hollow layer is formed at each of the gaps between the inner wall and the outer wall, and the plurality of peaks and valleys on the outer wall maintain a predetermined distance in the axial direction.

In the fittings of double walled pipes, in order to connect to each other or to a fixed member such as a manhole, a socket (PDS), 90 ° elbow (PDE 90 °), 45 ° elbow (PDE) 90 °), T-shaped tee socket (PDT) and the like.

Since these fittings are connected to the ends of double walled pipe by inserting method, whenever the installer branches another double walled pipe or pipe member at the desired place, it is necessary to perform the joining work after cutting in consideration of pipe length. As a result, it is very inefficient, but the use of accessories is large and uneconomical.

Therefore, in consideration of such various problems, the actual pipe construction site drills a hole having a predetermined diameter in the main pipe (or main pipe), and then attaches or mounts a branch (or branch pipe) to connect the branch pipe to the main pipe. .

In general, if branch outlets are not used for the connection of sewer pipes, problems such as closing of the main pipes may occur when the branch pipes are excessively inserted into the main pipes. Problems such as leakage, groundwater inflow may occur when the light is generated.

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 washers 3 having a larger diameter are divided into two parts into the holes 10, and the packings 7 and 8 are respectively provided on the upper surface of the divided inner washer blade pieces 31 and the intersected inner washers end surface 33. And the packing 9 is attached to the inner surface 24 of the branch pipe socket 2, the bifurcated inner washer 3 and the pipe outer surface 11, wherein the wing piece 31 extends over the inner surface of the hole 10. When the branch pipe socket 2 in close contact with the nut is tightened with the nut or the female screw part 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 opened. (10) Between the inner washer end face 33 pressed and bisected on the inner periphery 12, there is a packing 8, and the outer tube 34 or inner surface of the vertical tube projection 36 of the inner washer 3; (35) is in close contact with the packing inner surface (24) formed on the lower surface of the branch pipe socket (2) or the packing (9) attached to the inner surface of the projecting frame (22) to be watertight by the packing (7, 8, 9) Form a bent portion 400 such as a hinge, a spring, etc. on the winged piece 31 of the inner washer, and connect the two pieces of the inner washer 3 to each other and bend into the hole 10 while being bent in a V-shape. 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 in a circular shape.

The branch pipe of the prior art including the branch pipe socket attaching 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 branch pipes cannot maintain watertightness with the main pipe when the branch pipe socket is simply mounted on the outer wall because of the characteristics of the outer circumference of the double wall pipe. Therefore, the branch pipe socket is inserted into the inner washer inserted into the perforated hole. By using the conventional construction method to be in close contact with the inner wall of the pipe, it was difficult to expect the speed and ease of field work.

In addition, in order to insert an inner washer for a branch pipe having a diameter larger than the hole into the hole, the insertion part such as an inner washer is cut and inserted, or a part is formed by inserting a bent portion, or the part is inserted. And the part is formed by inserting a soft material such as rubber, but in the end it is very difficult to guarantee the water tightness around the incision or the bent portion, or the construction work is very complicated and uncomfortable, especially soft parts, such as There is a problem that necessarily requires a variety of members for reinforcement.

In addition, in the conventional branch pipe, in the case of the branch hole type in which the inner washer or the like enters into the perforated hole, 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 branch having a large diameter in the small diameter pipe There is a drawback that cannot be used for branch connections to pipes.

In addition, in the conventional branch pipe, the diameter of the drilled hole is drilled relatively wider than the diameter of the branch pipe according to the branch pipe specification rather than following the specification of the branch pipe. There are disadvantages.

In addition, the conventional branch pipe is hinged to a bisected inner washer, the inner washer is inserted into the perforated hole in two split state, and then restored to its original shape by manual work, inserting the inner washer In addition to this inconvenience, there is a disadvantage that the watertight treatment of the protruding hinge portion is very difficult, and the insertion work takes a lot of time.

In addition, the conventional branch pipe is a combination method of pressing the bifurcated inner washer and branch branch socket with a plurality of bolts, it is not only necessary to use a separate bolt tightening tool, but also takes a lot of bolt assembly construction 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.

Accordingly, an object of the present invention for solving the above-mentioned problems is to include a packing portion, an elevator, a saddle, and a branch sleeve, which serve as an elastic hinge and a watertight role, but with a branch sleeve and a screw of the elevator. It is possible to provide a fastening by the coupling, the insertion portion of the elevator by the packing portion is performed very quickly to provide an elastic hinged double-wall pipe branch can shorten the construction period.

In addition, another object of the present invention relates to an elastic hinged double wall pipe branch having a structure that can easily and quickly branch the branch pipe from the main pipe, but has a good sealing state in the fastened state to prevent the occurrence of leakage.

Objects of the present invention as described above, in the elastic hinged double-walled tube outlet that is mounted in the perforated hole of the main pipe, having a different size of inner diameter on the top corresponding to the branch pipe to be connected to the perforated hole of the main pipe, A branch sleeve having a threaded portion at a lower portion thereof; Coupling holes of an arcuate skirt in close contact with the perforated holes of the main pipe, and saddles having hollow circular protrusions formed around the coupling holes; On the inner periphery of the divided body to form another threaded portion having a shape of either male or female threads on the inner circumference of the bisected body so as to correspond to the screw shape of the threaded portion of the branch sleeve inside the coupling hole. An elevator having a bisected protruding edge; The U-shaped cross-sectional shape, such as an inner space, is formed at a lower portion to which the protruding edge is coupled, and includes a packing part coupled to surround a part of the inner circumference of the elevator, and the packing part is rotated and restored like an elastic hinge, It is achieved by a resilient hinged double wall pipe branch characterized in that it is coupled to play a role.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings, FIGS. 2A to 7C.

2a to 2c are plan and cross-sectional views for explaining the configuration of the branch sleeve of the resilient hinged double wall pipe branch according to the present invention, and FIGS. 3a to 3e are plan and cross-sectional views for explaining the configuration of the birds. to be. 4A-4D are sectional drawing for demonstrating the structure of an elevator, and FIG. 5A-5D are sectional drawing and bottom view for demonstrating a packing part. 6A and 6B are cross-sectional views illustrating the operating state of the packing unit and the elevator in a combined state, and FIGS. 7A to 7C are exploded and combined cross-sectional views of the elastic hinged double wall pipe branch according to the present invention. .

The present invention provides a threaded branch sleeve for inserting and mounting a branch pipe into a perforated hole of the main pipe, saddles pressed and fixed to the outer surface of the main pipe when the branch sleeve is screwed, and inserted into the perforated hole of the main pipe. It means an assembly consisting of an elevator pressurized and fixed to the inner circumference of the main pipe in the state, and a packing portion for serving as a role of elastic hinge and watertight while surrounding a protruding edge such as a locking jaw of such an elevator.

Hereinafter, each detailed component of the basic and modified examples of the present invention will be described.

2A and 2B, the branch sleeve 100 of the basic example has an upper portion and a lower portion with respect to the step 103.

The upper part of the branch sleeve 100 is tubular and has different sizes of inner diameters (for example, the upper inner diameter is large diameter and the lower inner diameter is small diameter), and the expansion inner peripheral surface 102 is formed at the inlet side to facilitate the insertion of the branch pipe. Doing.

The branch sleeve 100 is in contact with the saddle, which will be described below, on the outer surface of the step 103 to form a first pressurizing surface 106 for providing a support force against a force for lifting the elevator during screwing. .

The lower outer periphery of the branch sleeve 100 is formed with a plurality of first reinforcing ribs 101 extending in the vertical direction, respectively, so as to bear stress loads and increase durability when the branch pipes are coupled.

In addition, a connection part 104 having a tube shape is formed on the bottom surface associated with the step 103 of the branch sleeve 100 with the hollow as the inner circumference.

2A and 2B, male threads 105 are formed on the outer circumference of the connecting portion 104, and the branch sleeve 100 itself is described below as the screw rotates without a separate bolt. It is possible to screw and fasten with the female-shaped threaded portion (see reference numeral 125 of FIG. 4A) of the elevator of the basic example.

In addition, the branch sleeve 100a of the modification as shown in FIG. 2C has a connecting portion 104a which extends vertically downward from the bottom of the step 103, and has a female thread shape on the inner circumference of the connecting portion 104a. 105a is formed, and it is comprised so that it may be screwed with elevator 120b, 120b 'corresponding to the male threaded modification shown in FIG. 4D below.

Here, the second support pressing surface 106a corresponding to the lower edge of the connecting portion 104a is in contact with the upper edge of the saddle 110b corresponding to the modification shown in FIG. Provide support against force.

As shown in FIGS. 3A and 3B, the saddle 110 of the basic example has a relatively high height a for the elevators of the basic example (FIGS. 4A-4C).

That is, since the elevator of the basic example has a female thread shape and the corresponding branch sleeve has a male thread shape, a relatively high height a is required for the saddle 110 of the basic example.

When the saddle 110 is pulled up by the screwed elevator (120, 120 '), it is seated on the outer periphery of the main pipe serves to support and secure the branch sleeve described above.

To this end, the saddle 110 is formed in a saddle shape as a whole, and forms a hollow circular protrusion 112 of a diameter corresponding to the center of the coupling hole 113 through which the elevator passes.

The lower portion of the circular protrusion 112 is formed with a rectangular arcuate skirt 111 extending outward corresponding to the circumferential rate of the outer periphery of the main pipe.

In addition, the saddle 110 is coupled to the outside of the body 123 corresponding to the outer wall of the elevator, when the elevator and the branch sleeve is screwed, the branch sleeve is supported by the outer peripheral surface of the main pipe to lift the elevator up Play the role of support.

The square arcuate skirt 111, which is a portion in contact with the outer circumference of the main pipe in the saddle 110, has a radius corresponding to the size of the outer diameter of the main pipe, and the circular protrusion 112, which is another portion in contact with the outer diameter of the elevator, It has a diameter corresponding to the size of the outer diameter.

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.

Also, as shown in FIGS. 3C and 3D, the other saddle 110a of the basic example has a plurality of second reinforcing ribs 114 and a circular protrusion 112 to prevent deformation due to excessive compressive force. It is preferable to form further in the corner part between the square arched skirts 111. As shown in FIG.

As shown in FIG. 3E, the saddle 110b of the modified example may further form a plurality of second reinforcing ribs 114 at a corner portion between the circular protrusion 112 and the rectangular arcuate skirt 111 as described above. Of course it can.

The saddle 110b of this variant preferably has a relatively low height b for the elevator of the variant having a male threaded shape (FIG. 4D).

That is, because the elevator of the modified example has a male thread shape and the corresponding branch sleeve has a female thread shape, a relatively low height b is required for the saddle 110b of the modified example.

The low height b of the saddle 110b of this variant is achieved by taking the height of the circular protrusion 112a short.

As shown in FIG. 4A, the elevators 120 and 120 'of the basic example have a space of a circular conduit in the center, but two parts of 180 ° from the center of the shaft so that they can be easily inserted between the perforated holes of the main pipe. It has a body 123 cut into.

These elevators 120 and 120 'are integral with the body 123 and have flat plate-shaped protruding edges 129 extending from the lower end toward the outer arch, respectively.

Here, the flat protruding edge 129 has the same radius as the inner diameter of the main pipe, and serves as the inner support surface or the engaging jaw around the perforated hole of the main pipe.

Each elevator 120, 120 'is preferably coated with a predetermined watertight coating material (soft PVC, soft rubber, etc.) to increase the watertight performance.

Meanwhile, the elevators 120 and 120 ′ form round curved portions 128 at the lower portions of the bisecting contact surfaces 121, respectively, so that the elevators 120 and 120 ′ may be rotated like a hinge based on the origin of each of the round curved portions 128. Here, no hinge member or hinge is provided on the contact surface 121 including the round curved portion 128. Of course, it is preferable that the round curved portion 128 has a male shape on one side and a female shape on the other side.

As such, the elevator 120, 120 'of the present invention is not provided with a hinge member separately, it is possible to restore after the elastic rotation by the packing portion to be described later.

That is, the elevators 120 and 120 'are inserted into the perforated holes of the main pipes in a folded state based on the round curved portion 128, and then branch branches 100 and screws which are partially introduced into the main pipes and the main pipes to be connected to the main pipes. It is formed to be able to be combined.

That is, the female thread-shaped threaded portions 125 of the elevators 120 and 120 'have valleys and peaks that coincide with the upper inner peripheral edge 122.

In addition, a lower groove-shaped head fixing portion 124a for hermetically inserting the fixed head of the packing portion described below is formed below the female threaded screw portion 125.

In addition, a head support jaw 124b protruding higher than the mount height of the female threaded screw portion 125 is formed in the vertical lower portion of the groove fixing portion 124a to correspond to the supporting groove of the packing portion below.

A groove- or hole-shaped alignment portion 126 is formed on the inner circumferential surface between the head support jaw 124b of the elevators 120 and 120 'and the protruding edge 129 to correspond to the alignment nail of the packing portion below. .

As shown in FIG. 4B, the other elevators 120a, 120a ′ are moldable to have a protruding protrusion edge 129a.

In this case, a plurality of packing support protrusions 127 and 127 'are formed on the outer side of the protruding protrusion edge 129a of the elevators 120a and 120a'.

The packing support protrusions 127 and 127 'play a role of a reinforcing material of the protruding edge 129a, and the watertight lip formed in the packing portion to be described below (see reference numerals 137 and 137' of FIG. 5B). Each plays a role in reinforcement.

As shown in FIG. 4C, the elevators 120 and 120 ′ provided in the present invention may be manufactured in a film type to have excellent watertight performance without requiring any separately manufactured packing part.

To this end, the operator puts only the lower portion of the elevator (120, 120 ') into the settling tank containing the liquid or semi-liquid soft PVC material, and then dried at room temperature.

In this case, the film-shaped packing portion 130, which can perform the same role as the packing portion, is fixed to the lower and inner peripheral edges of the elevator 120, 120 'in a state including a fixed head, the elevator, It is possible to increase the unity with the 120 and 120 ', and to reduce the overall assembly step.

That is, the film type manufacturing method provides the elevator 120, 120 ′ with the film-type packing part 130 having a predetermined thickness corresponding to the flat protrusion rim 129 or the protrusion protrusion 129a. .

As shown in FIG. 4D, the elevators 120b and 120b 'of the modifications correspond to the female threaded threads (see reference numeral 105a in FIG. 2C) of the branch sleeve of the modification (see 100A in FIG. 2C). In order to be able to engage, the male threaded part 125a is formed.

That is, the threaded portion 125a of the elevators 120b and 120b 'has a male screw shape formed of a valley coinciding with the upper outer periphery and a mountain projecting from the upper outer periphery.

The elevators 120b and 120b 'of the modified example have any one of the flat protrusion edges 129 or the protrusion protrusion edges of the packing supporting protrusion 127, except for the shape of the threaded portion 125a. Has the same configuration as

As shown in FIG. 5A. Combined packing portion 130a is a synthetic rubber, soft PVC, silicone watertight material, watertight synthetic resin material excellent in ductility, elasticity and elasticity resilience to ensure the watertight performance of the elevator, and to play an important role of the elastic hinge It is made of either.

The coupled packing portion 130a is a cylindrical ring partially bent to correspond to the inner circumferential protrusion or recessed shape of the elevator, and further includes a shape surrounding the protruding edge of the elevator.

That is, a fixing head 134a is hermetically inserted into the head fixing part of the circular groove shape of the elevator at the upper outer periphery of the combined packing part 130a.

A support groove 134b surrounding the head support jaw of the elevator is formed in the vertical lower portion of the fixed head 134a.

In addition, the upper band portion 134 of the combined packing portion 130a is a portion where the fixed head 134a and the support groove 134b are formed, and the lower portion 138 of the packing portion 130a during hinge operation of the divided elevator. ) And restoring force by its own elastic force.

In the outer circumference between the support groove 134b and the lower portion 138 of the packing portion 130a, at least one dowel nail 136 mentioned above protrudes corresponding to the depth of the fitting portion of the elevator.

The lower portion 138 of the packing portion 130a is formed in a 'U' cross-sectional shape so as to have the internal space 139 of the volume on the protruding edge of the elevator.

The lower portion 138 of most of these combined packing portions 130a is inclined in a skirt shape so that its overall appearance surrounds the protruding edge of either the flat or protrusion of the elevator.

If the packing portion 130a is manufactured to be coupled to an elevator having a flat protrusion, the inner surface of the inner space 139 at the lower portion 138 of the packing portion 130a may provide a flat plane. .

The upper outer surface of the lower portion 138 of the packing portion 130a is preferably formed with a plurality of circular ring protrusion water-tight lip 137a as an integral solid type.

As shown in FIG. 5B, when the combined packing part 130b is manufactured to be coupled to an elevator having a protruding protrusion edge, the inner side of the inner space 139 toward the inner space 139 in the lower part 138 of the packing part 130b. The lower side provides a flat plane, and the upper side provides a recessed surface consisting of a plurality of grooves 137b.

The upper outer surface of the lower portion 138 of the packing portion 130b is bent in correspondence with the plurality of grooves 137b to have a hollow type, and a plurality of circular ring protrusion-shaped watertight lips 137 and 137 'are formed. ) Is preferably formed. Such watertight rips 137 and 137 'are well suited to enclosing the plurality of packing support protrusions 127 and 127' of the elevators 120b and 120b ', respectively, having the protruding rim 129a shown in FIG. 4B. .

As shown in FIGS. 5C and 5D, the other coupling packing part 130c includes at least one crack preventing groove 139a at an inner circumferential position of the upper band portion of the packing part 130c corresponding to the round curved part of the elevator. , 139b).

That is, the crack preventing grooves (139a, 139b), as the work spreaders apart the elevator in the state in which the packing portion 130c coupled to each other, the extension stress is locally on a portion of the upper band portion of the packing portion (130c) When it occurs, it has a fail safe structure that prevents possible cracks and the like.

The crack preventing grooves 139a and 139b are formed in plural at a point near the round curved portion of the elevator where the elongation stress is most concentrated in the packing part 130c, and the exact position adjustment of such crack preventing grooves 139a and 139b is described above. It is easily realized by the dowel 136 and the fitting portion of the elevator.

As shown in FIGS. 6A and 6B, the elevators 120a and 120a ′ have rounded surface portions such that the planes are reduced to a size that can be inserted into the drilled hole 10 of the main pipe 14 by the work force of the working contractor. 128) With each origin, a pivot that is folded within a finite angular range such as a hinge is performed (a).

In this case, the lower portion 138 of the elastic packing portion 130b surrounds the protruding edge 129 including the round curved portion 128 of the elevators 120a and 120a ', and also the elastic packing portion 130b. Since the upper band side portion 134 of the) is in close contact with the inner surface of the round curved portion, the packing portion 130b near the round curved portion 128 of the elevators 120a and 120a 'eventually expands. An elastic force (elastic repulsive force) is generated in proportion to the elongation ratio.

Once the elevators 120a and 120a 'in the folded state are inserted into the perforated holes 10 of the main pipe 14, and when the construction worker releases the manpower applied to open the elevators 120a and 120a', The elevators 120a and 120a 'are returned to their original positions by restoring forces corresponding to the elastic force as shown in FIG. 6B (b), and then lifted out of the hole 10 drilled by the operator ( f).

Meanwhile, as shown in FIGS. 7A and 7B, the packing part 130b and the elevators 120a and 120a 'are coupled to each other by using the alignment part 126 and the alignment nail 136, and then, the elastic hinge is formed. It is quickly inserted into the perforated hole 10 of the main pipe 14 by the role of.

The work contractor then sets the saddle 110 at the outer periphery around the perforated hole 10 of the main pipe 14. Then, the work contractor screws the elevator (120a, 120a ') and the branch sleeve 100.

7A and 7B show the screwed state of the branch sleeve 100, the saddle 110 and the elevators 120a and 120a 'of the basic example, respectively.

The elevators 120a and 120a 'of the basic example form a female threaded thread 125 on the body 123 to be screwed with the male threaded thread 105 formed on the connecting portion 104 of the branch sleeve 100 of the basic example. do. The saddle 110 of the basic example has a relatively high height to meet this screwing characteristic.

The saddle 110 serves to support the branch sleeve 100 to be screwed to the elevator (120a, 120a ') to the outer periphery of the main pipe (13). That is, the branch sleeve 100 is screwed with the elevator (120a, 120a ') in the state receiving the support force through the saddle 110, at this time, the screw of the branch sleeve 100 of the hole 10 The elevators 120a and 120a 'are elevated in the upward direction. The first pressing surface 106 of the branch sleeve 100 is in contact with the upper edge of the saddle 110 in accordance with the screw engagement to get the bearing force by bringing the saddle 110 in close contact with the outer periphery of the main pipe (14).

At the same time, the lower edge of the connecting portion 104 of the branch sleeve 100 tightly attaches the fixed head 134a of the packing portion 130b to the head support jaw 124b of the elevators 120 and 120 ', and thus the packing portion. The fixing head 134a of the 130b may be fixed to the inner surfaces of the elevators 120 and 120 'to prevent separation and maintain watertightness.

In addition, by screwing the branch sleeve 100 and the elevators 120a and 120a ', the protruding edge 129 of the elevators 120a and 120a' uses the packing support protrusion 127 to seal the packing 130b. Of the watertight lip 137 is in close contact with the inner periphery of the perforated hole 10 of the main pipe 14 to maintain the watertight.

On the other hand, Figure 7c shows the threaded state of the branch sleeve (100a), saddle (110b) and elevator (120b, 120b ') of the modification, respectively. That is, the elevators 120b and 120b 'of the modified example form a male threaded portion 125a in the body 123, and are screwed into the female threaded portion 105a of the branch sleeve 100a of the modified example. A modified saddle 110b was used to meet this screwing characteristic. The packing part 130b may select and use any one corresponding to the protruding edge 129 of the elevators 120b and 120b '.

The second support pressing surface 106a of the branch sleeve 100a is supported by the top edge of the saddle 110b and is rotatable.

At this time, it is preferable that the branch sleeve 100a further forms the packing fixing wall 106b on the bottom surface of the step 103 inside the threaded portion 125a like the double wall structure.

At the time of screw rotation, the lower edge of the packing fixing wall 106b closely adheres the fixing head 134a of the packing 130b toward the head support jaw 124b of the elevators 120b and 120b ', thereby eventually packing 130b. The fixing head 134a of the elevator 120b, 120b 'is fixed to the inner surface of the elevator to prevent the separation and at the same time to maintain the watertight.

In summary, the elevators 120b and 120b 'provided in the present invention each have a corresponding threaded portion to couple and connect the branch sleeves 100a to have the ease of engagement firmly fixed to the inner wall of the perforated hole of the main pipe.

At this time, the elevator (120b, 120b ') is folded at the time of insertion is characterized in that it is restored by the packing portion 130b or other coating (not shown) to have the original shape.

In particular, the elevator (120b, 120b ') is a type that is completely cut into two bodies on the basis of the divided contact surface 121 and the round curved portion 128, and each of the elevator 120, 120' As the thin connecting film (not shown) is integrally formed between the round curved portions 128, two elevators 120b and 120b 'may be manufactured in a type not completely cut.

In the present invention configured as described above, the packing part is wrapped around a part of the elevator to maintain watertightness and at the same time act as an elastic hinge of the elevator, the elevator is folded when inserted into the perforated hole of the main pipe after insertion into the packing part or other coating Because of its original shape, it can be hinged even in the absence of a separate hinge, etc., as well as quick branch piping by elastic restoring force, which can shorten the construction period. There is an advantage that this easy elastic hinged double wall pipe branch is provided.

In addition, the elastic hinged double wall pipe branch of the present invention has the advantage that the branch sleeve and the elevator is mounted in the perforated hole of the main pipe by screwing, providing a perfect water tightness without requiring a separate fixing member.

In addition, the elastic hinge type double wall pipe branch of the present invention is easy to use because the packing portion does not leave the original position during installation in accordance with the shape features such as dowels, fittings, fixed head, head support jaw, etc. have.

Claims (19)

An elastic hinged double wall pipe branch mounted in a perforated hole of a main pipe, Branch sleeves (100, 100a) formed with threaded portions (105, 105a) at an upper portion corresponding to a branch pipe to be connected to the perforated hole of the main pipe, and a lower portion having an inner diameter different from the upper portion; Coupling holes 113 of the arcuate skirt 111 in close contact with the perforated hole of the main pipe, and saddles 110, 110a and 110b forming hollow circular protrusions 112 around the coupling hole 113; Any one of a male screw or a female screw on the inner circumference of the bisected body 123 to be screwed in correspondence with the screw shape of the threaded portions 105 and 105a of the branch sleeves 100 and 110a inside the coupling hole 113. Elevators 120, 120 ', 120a, 120a', 120b, which form the other threaded portions 125 and 125a having a shape, and protruding edges 129 and 129a bisected on the lower outer periphery of the body 123, 120b '); In the lower portion 138 to which the protruding edges 129 and 129a are coupled, a U-shaped cross-sectional shape such as an inner space 139 is formed to form the elevators 120, 120 ', 120a, 120a', 120b, and 120b '. Including a packing portion 130, 130a, 130b, 130c coupled to surround a portion of the inner circumference, The packing portion 130, 130a, 130b, 130c is a hinged double-wall tube branch, characterized in that coupled to the rotation and restoration, such as elastic hinge to play the role of watertight. The method of claim 1, The branch sleeve (100, 100a) is an elastic hinged double wall pipe branch, characterized in that the plurality of first reinforcing ribs (101) extending in the vertical direction on the outer circumference thereof is further formed. The method of claim 1, The branch sleeve 100a has a packing fixing wall 106b for fixing the packing parts 130, 130a, 130b, and 130c to the bottom of the step 103 inwardly of the threaded part 125a, as in the double wall structure. An elastic hinged double wall pipe branch is further formed. The method of claim 1, The rectangular arcuate skirt 111 of the saddle 110, 110a, 110b has a radius corresponding to the size of the outer diameter of the main pipe to contact the outer periphery of the main pipe, and the circular protrusion of the saddle 110, 110a, 110b. 112 denotes the size of the outer diameter of the elevators 120, 120 ', 120a, 120a', 120b, 120b 'in contact with the outer diameters of the elevators 120, 120', 120a, 120a ', 120b, 120b'. An elastic hinged double wall tube branch having a corresponding diameter. The method of claim 1, The saddle 110 has a relatively high height (a) corresponding to the screw coupling of the elevator 120, 120 ', 120a, 120a' of the female thread shape and the branch sleeve 100 of the male thread shape. Resilient hinged double wall pipe branch. The method of claim 1, The saddle (110a) is a plurality of second reinforcing ribs 114 is an elastic hinged double wall pipe branch, characterized in that further formed in the corner portion between the circular protrusion 112 and the square arcuate skirt (111). The method of claim 1, The saddle 110b has an elastic hinged double wall having a relatively low height b corresponding to the screwing of the male threads of the elevators 120b and 120b 'and the branch sleeves 100a of the female thread shape. Tubular bifurcation. The method of claim 1, The screw parts 125 of the elevators 120, 120 ', 120a, and 120a' have a female screw shape formed of a valley coinciding with the upper inner circumferential edge 122 and a mountain projecting from the upper inner circumferential edge 122. An elastic hinged double wall pipe branch having: The method of claim 1, The elevators 120, 120 ', 120a, and 120a' have a head-shaped head fixing portion having a circular groove shape for fixing a portion of the packing portions 130, 130a, 130b, and 130c to the lower portion of the screw portion 125 ( An elastic hinged double wall pipe branching port, further comprising 124a). The method of claim 1, The threaded portions 125a of the elevators 120b and 120b 'have an elastic hinged double wall pipe portion having a male screw shape formed of a valley coinciding with an upper outer circumference and a mountain projecting from the upper outer circumference. Instrument. The method of claim 1, In the vertical lower portion of the threaded portion 125 of the elevator (120, 120 ', 120a, 120a') is characterized in that the head support jaw (124b) is further formed protruding higher than the mountain height of the threaded portion (125) Elastic hinged double wall pipe branch. The method of claim 1, The elevators 120, 120 ', 120a, 120a', 120b, and 120b 'further include a round hinge portion 128, which is used as a reference point to be rotated and restored, such as an elastic hinge. Divergence. The method of claim 1, The elevator 120, 120 ', 120a, 120a', 120b, 120b 'has a groove-shaped or hole-shaped fitting portion at a position corresponding to the positioning nail 136 of the packing portions 130a, 130b, 130c. 126 is an elastic hinged double wall pipe branch, characterized in that is further formed. The method of claim 1, The elevator (120a, 120a ', 120b, 120b') is formed of a plurality of elastic hinged double wall tube, characterized in that the plurality of packing supporting projections (127, 127 ') formed on the outer surface of the projecting edge (129a). Divergence. The method of claim 1, The packing parts 130, 130a, 130b, and 130c are fixed heads 134a formed to be fixed by screwing the branch sleeve 100 and the elevators 120, 120 ′, 120a, and 120a ′, and the fixing An elastic hinged double wall pipe portion further comprising a band portion 134 having a support groove 134b surrounding a part of the elevators 120, 120 ', 120a, and 120a' at a vertical lower portion of the head 134a. Instrument. The method of claim 1, The packing part 130 is a film type, corresponding to the flat protruding edge 129 or the protruding protruding edge 129a of the elevators 120 and 120 '. An elastic hinged double wall pipe branch, which is integrally attached to the lower inner and outer edges. The method of claim 1, On the lower outer surface of the packing portion 130a, the upper outer surface is formed as an integral solid type, and a plurality of circular ring protrusion-shaped watertight lips 137a are formed. Instrument. The method of claim 1, The packing part 130b is the lower side of the inner side of the inner space 139 in the lower part 138 of the packing part 130b to be coupled to the elevator 120a, 120a 'having the protruding protrusion rim 129a. An elastic hinged double wall pipe branch, characterized in that to form a flat plane on the upper side, a plurality of grooves (137b) on the opposite side to form a recessed surface. The method of claim 1, The packing portion 130 ′ is an elastic hinged double wall tube branch further comprises at least one crack preventing groove (139a, 139b) formed on the inner circumference of the upper band portion.

Images