KR200479304Y1 - A Rubber bands of Pipe Connector for improved ability of watertightness - Google Patents

Abstract

The present invention relates to a rubber band for a pipe connector reinforced with watertightness, and more particularly, to a rubber band for a pipe connector having a watertightness reinforced by a plurality of solid protrusions formed on an inner circumferential surface of the rubber band, And a plurality of low-level protrusions protruded between the solid-state protrusions. According to the present invention, even if the dimensions of both pipes to be interconnected do not coincide exactly, the projecting height can correspond to itself by other solid projections and low-profile projections, so that the watertightness can be ensured, Can be prevented.

Description

Technical Field [0001] The present invention relates to a rubber band for a pipe connector having a water-

The present invention relates to a rubber band for a pipe connector with enhanced watertightness, and more particularly, to a rubber band for pipe connection with enhanced watertightness, and more particularly, To a rubber band for a watertightly reinforced pipe connector, which can prevent mutual separation or poor connection of a fluid in a submerged pipe to the outside.

Generally, the sewer line, which is an infrastructure of the city, is a facility to protect and maintain the living environment and the ecosystem. Various kinds of water such as sewage and stormwater are separated through the sewer line so that they are discharged to the treatment plant or river. In addition, the sewer pipe can be composed of various types, and the gas and tap water necessary for running the city life are also supplied.

On the other hand, sewage is discharged through a sewer pipe including a polyethylene (PE) pipe, a polypropylene (PP) pipe, a light PVC pipe, a centrifugal reinforced concrete pipe (Hume pipe) or a corrugated steel pipe, So that a number of connectors for connecting the sewer pipes are required in order to form the entire pipeline by using the sewer pipe.

Accordingly, as a conventional technique for connecting a sewer pipe for connecting such pipes, Korean Patent Registration No. 10-0716062 (registered date: 2007.05.02.) Is disclosed.

FIG. 1 is an exploded perspective view showing the structure of a pipe coupling according to the prior art, which comprises a rubber band 10 for tightly connecting the pipe 60 and the end of the pipe 60 '; A main body 20 of a metal material positioned on the surface of the rubber band 10 and having both ends bent outward to form a tensile portion 21; A tensile rod 30 inserted into the tensile portion 21 and having a fastening hole 31; A fastening member 40 inserted into the fastening hole 31 and screwed to the nut 41 to tightly fasten the both sides of the main body 20 by fastening both ends thereof to the inside; And an auxiliary platen 50 located at both ends of the inner side of the tension unit 21 to cover and press the rubber band 10. The rubber plies 20 are arranged on the back surface of the main body 20 of the pipe coupling, The band receiving groove 70 is integrally formed and then a part of the body of the rubber band 10 is accommodated in the rubber band receiving groove 70 upon tightening so that the tube and the tube are tightly sealed.

However, since the sewage pipe has a very large fluidity and the allowable error of the sewer pipe specification is limited to about 5.31%, it is very likely that the end portion is not uniform even if the same standard pipe is used. For example, if the tolerance range of the largest standard 1500 mm tube is assumed to be 5.31%, the allowable error range of the 1500 mm tube is 1500 ± 79.65 mm, There is a problem that a large pipe and a small pipe within the range show a very large separation ratio.

Therefore, when the above-mentioned prior art rubber bands (rubber bands having ribs formed with constant spacing and constant size on the inner circumferential surface) are used to connect the tubes whose outer diameters do not coincide with each other, There is a problem that can not be maintained.

As a conventional technique for solving such a problem, Korean Registered Utility Model No. 20-0395248 (registered date: 2005.09.01) is disclosed.

FIG. 2 is a cross-sectional view showing a rubber band structure of the pipe coupling according to the prior art, and showing a state in which the rubber band is cut open. In the prior art, the wing 11 formed on the inner wall of the rubber band 10 has a saw- So that the tube and the tube can be tightly connected to each other.

However, in the above-described conventional technique, the wings 11 and the tight contact ends 80 formed at the inner side of the rubber band are formed at a uniform height. Therefore, when the groove of the pipe face is formed deep or when the pipe is formed in a bent shape There is a problem that leakage can occur due to difficulty in complete sealing.

KR 10-0716062 B1 (May 2, 2007.) KR 20-0395248 Y1 (2005.09.01.)

The object of the present invention is to solve the above problems of the prior art, and it is an object of the present invention to provide a method of manufacturing a high- To thereby provide a rubber band for a pipe connector with enhanced watertightness.

Also, a problem to be solved by the present invention is to provide a rubber band for a pipe connector reinforced with watertightness, which can have stronger adhesion by allowing the solid protrusions and the low-profile protrusions to be squeezed onto the outer circumferential surface of the pipe and serving as an adsorption plate.

In order to solve the above-mentioned problems, the rubber band for a pipe connector with improved watertightness according to the present invention comprises: a plurality of solid protrusions formed on an inner circumferential surface of the rubber band at a predetermined interval along a circumferential direction; And a plurality of low-level protrusions protruded between the solid-state protrusions.

Further, in the present invention, the rubber band is provided with a contact surface portion having a constant width at a central portion thereof.

According to the present invention, even if the dimensions of both pipes to be interconnected do not coincide exactly, the projecting height can correspond to itself by other solid projections and low-profile projections, so that the watertightness can be ensured, Can be prevented.

According to the present invention, the solid protrusions and the low-profile protrusions are pressed on the outer circumferential surface of the pipe to serve as an adsorption plate, thereby enhancing the adhesion.

According to the present invention, when the solid protrusions and the low-level protrusions are pressed on the outer circumferential surface of the pipe, labyrinths are formed according to the solid protrusions and the low-level protrusions, thereby improving watertightness.

1 is an exploded perspective view showing a structure of a pipe coupling according to a related art;
FIG. 2 is a cross-sectional view showing a rubber band structure of a pipe coupling of the prior art, in which a rubber band is cut open. FIG.
Fig. 3 is a perspective view of a rubber band for a pipe connector having water tightness according to the present invention; Fig.
FIG. 4A is a cross-sectional view taken along the line A-A 'of FIG. 3, showing a state in which a rubber band for a pipe connector reinforced with water tightness according to the present invention is cut open in the longitudinal direction.
4B is a cross-sectional view taken along the line B-B 'in FIG. 4A, showing a cross-sectional structure of a rubber band for a pipe connector reinforced with water tightness according to the present invention.
Fig. 5 is an exploded perspective view of a pipe connector to which a rubber band for a pipe connector reinforced with watertightness according to the present invention is applied.
FIG. 6 is a view showing a state in which a rubber band according to a first embodiment of a rubber band for a pipe connector reinforced watertightness according to the present invention is cut open in the longitudinal direction. FIG.
7A is a cross-sectional view showing another second embodiment of a rubber band for a pipe connector having water tightness according to the present invention.
Fig. 7B is a cross-sectional view showing a pipe connection state of the rubber band for a pipe connector with water tightness shown in Fig. 7A. Fig.
8 is a cross-sectional view showing another third embodiment of a rubber band for a pipe connector reinforced with water tightness according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

FIG. 3 is a perspective view of a rubber band for a pipe connector reinforced with water tightness according to the present invention, FIG. 4A is a sectional view taken along the line A-A 'of FIG. 3, FIG. 4B is a cross-sectional view taken along the line B-B 'in FIG. 4A, showing a cross-sectional structure of a rubber band for a pipe connector reinforced with water tightness according to the present invention, FIG. 5 is a cross- Fig. 8 is an exploded perspective view of a pipe connector employing a rubber band for a reinforced pipe connector.

The rubber band 300 of the present invention is positioned inside the connecting portion main body 100 such that the end portions of the pipe A 200 and the pipe B 201 are inserted and interconnected. At this time, the rubber band 300 presses both ends of the inserted pipe A 200 and the pipe B 201 by pressing the connecting body 100, thereby maintaining watertightness of the pipe.

3 and 4, a plurality of solid protrusions 320 protruded from the inner circumferential surface of the rubber band 300 at regular intervals along the circumferential direction and a plurality of solid protrusions 320 protruding from the solid protrusions 320 And a plurality of low-rise projections 330 are provided. The rubber band 300 is made of ethylene propylene rubber (EPDN), which is excellent in durability, chemical resistance, elongation, heat resistance, cold resistance and weatherability so that it can withstand the buried underground environment and maintain water tightness desirable.

According to the present invention, between the solid-state protrusions 320, a low-rise projection 330 formed at a protrusion height relatively lower than the protrusion height of the solid-state protrusion 320 may be formed in two. For example, the projection height of the low-rise projection 330 may be 1/5 to 1/2 of the projection height of the solid-state projection 320, preferably 1/4 to 1/3 . When the projection height of the low-rise projection 330 is less than 1/5 of the projection height of the solid-state projection 320, the water-tightness by the low-rise projection 330 is low. Are formed to be higher than 1/2 of the projecting height of the solid protrusions 320, there is a problem in that they can not correspond to the specifications of both pipes to be interconnected.

According to the present invention, the rubber band 300 is formed with a contact surface portion 340 having a constant width at a central portion thereof, and the same number of solid-state projections 320 and two- 330 may be alternately formed.

In addition, according to the present invention, the solid protrusions 320 and the bottom protrusions 330 may have a sharp tip. When the tip ends of the solid protrusions 320 and the bottom protrusions 330 are formed to be pointed, the ends of the pipe A 200 and the pipe B 201 are inserted while the solid protrusions 320 and the low- 330 are bent in the direction of the contact surface portion 340 so that the pipe A 200 and the pipe B 201 can be further compressed.

The rubber band 300 of the present invention has the same width as the width of the connector main body 100 to maintain the watertightness of the pipe by inserting the ends of the pipe A 200 and the pipe B 201 to be interconnected. . However, the width of the rubber band 300 may be slightly longer or shorter than the width of the connector body 100, depending on the field installation environment or the manufacturing environment.

5, the pipe connecting portion connecting the pipe A 200 and the pipe B 201 is connected to the connecting pipe body 100, the tension portion 110, the tension rod A A tension bar B 130, a nut 140, a fastening bolt 150, an extension plate 160, and a rubber band 300.

The connector main body 100 is formed of a metallic plate or the like and includes a connecting main body 100 having a tensile portion 110 formed by pairing and fixing a plurality of connecting grooves 111, A tensile rod A 120 and a tensile rod B 130 which are respectively inserted into the pair of the pulling portions 110 and in which a fastening hole A 121 and a fastening hole B 131 are respectively formed, The pipe A 200 and the pipes B 201 (201) are inserted into the hole A 121 and the fastening hole B 131, respectively, and are screwed to the nuts 140, (Not shown). The tension unit 110 surrounds the surface of the rubber band 300 and both ends of the rubber band 300 are bent outward to form a pair of coupling grooves 111.

An extension plate 160 having a length equal to the circumferential length of the connector body 100 may be integrally fixed to the end of the at least one tension unit 110 so as to uniformly press the rubber band 300. The ends of the pipe A 200 and the pipe B 201 are inserted into the extension plate 160 when the pipe A 200 and the pipe B 201 are connected by the connector body 100, The outer circumferential surface of the rubber band 300 is brought into close contact with the outer circumferential surface of the rubber band 300 at a uniform pressure so as to have water tightness. The extension plate 160 is welded and fixed to the end of the at least one tension unit 110. The extension plate 160 may be naturally slid when it is tightened or loosened so that the rubber band 300 may be pressurized or released.

The tension rods 120 and 130 correspond to each other and are divided into a tensile rod A 120 and a tensile rod B 130. A middle portion of the tensile rod A 120 has a fastening hole A 121 , And a fastening hole B (131) is provided at the middle portion of the tension rod B (130). According to the present invention, the tensile rods 120 and the tensile rods 130 are inserted into the pair of the tensile portions 110, respectively, so that both sides are firmly fixed.

A coupling groove 132 for engaging with the coupling protrusion 123 of the tension bar A 120 is provided around the coupling hole B 131 and a screw tightening protrusion 133 is provided on the other side. According to the present invention, the fastening bolt 150 is firmly screwed to the nut 140 through the fastening hole A 121 and the fastening hole B 131, so that the pipe A 200 and the pipe B 201 The rubber band 300 can be strongly pressed.

The rubber band 300 according to the present invention includes a plurality of solid protrusions 320 that are pressed by the connector body 100 and protrude from the inner circumferential surface 310 of the rubber band 300 at regular intervals along the circumferential direction And a lower protrusion 330 provided between the solid protrusions 320 and formed at a protrusion height relatively lower than a protrusion height of the solid protrusions 320, B (201), the water tightness can be improved.

When the solid protrusions 320 and the bottom protrusions 220 are pressed on the outer circumferential surfaces of the pipe A 200 and the pipe B 201 by the solid protrusions 320 and the bottom protrusions 220, The watertightness can be improved by forming labyrinths on the cross sections of the solid-like projections 320 and the low-rise projections 220.

6 is a view showing a state in which the rubber band according to the first embodiment of the rubber band for a pipe connector reinforced water tightness according to the present invention is cut open in the longitudinal direction.

Referring to FIG. 6, the rubber band 300 of the present invention may be provided with a plurality of grid grooves 350. The lattice grooves 350 may be formed on the contact surface 340 formed at the center of the rubber band 300, and may be formed of a plurality of lattice grooves 350. The lattice grooves 350 are connected to the pipe A 200 and the pipe B 201 after the ends of the pipe A 200 and the pipe B 201 are inserted into the rubber band 300, It is possible to sequentially expose a portion leaked from the connection portion of the pipe.

FIG. 7A is a cross-sectional view showing a second embodiment of a rubber band for a pipe connector reinforced with water tightness according to the present invention, and FIG. 7B is a cross-sectional view showing a pipe connection state of the rubber band for a pipe connector with water tightness shown in FIG. 7A .

7A and 7B, the rubber band 300 of the present invention has an inner circumferential surface which is relatively lower than the height of the solid protrusions 320 and has a height relatively higher than the height of the low- (360) may be further provided. The middle protrusion 360 is provided between the solid protrusion 320 and the bottom protrusion 330 and may be provided at a position relatively close to the bottom protrusion 330. According to the present invention, when the ends of the pipe A 200 and the pipe B 201 are inserted and connected to each other, the upper portion of the middle-height projection 360 is separated by the pipe A 200 or the pipe B 201 The upper end of the low elevation protrusion 330 is supported by the low elevation protrusion 330 while the lower elevation protrusion 330 is bent so as to be wrapped in the upper direction of the low elevation protrusion 330, The watertightness of the band 300 can be further improved.

Fig. 8 is a cross-sectional view showing another third embodiment of a rubber band for a pipe connector reinforced with water tightness according to the present invention. Fig.

8, wires 370 for holding the shapes of the solid protrusions 320 and the bottom protrusions 330 may be provided inside the solid protrusions 320 and the bottom protrusions 330 of the present invention . The wire 370 is formed in the circumferential direction of the rubber band 300 and inserted into the solid protrusions 320 and the lower protrusions 330 so that the durability Can be improved. The pipe 370 can maintain the shape of the rubber band 300 and thus the pipe A 200 and the pipe B 201 The effort to keep the shape of the rubber band 300 equal to the shape of the pipe A 200 and the pipe B 201 can be alleviated.

According to the present invention, watertightness can be secured by corresponding to the solid protrusions and the low-level protrusions having different protruding heights even if the dimensions of both pipes to be interconnected do not match exactly, There is an advantage that contamination can be prevented.

While the preferred embodiments of the present invention have been described, it should be understood that the scope of the present invention is not limited thereto and that the range of the present invention is substantially equivalent to the embodiments of the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100:
110: pulling portion 111: fastening groove
120: Tension rod A 121: Fastening hole A
122: screw groove 123: engaging projection
130: tensile rods B 131: fastening holes B
132: coupling groove 133: screw tightening projection
140: Nut
150: fastening bolt
160: Extension plate
200: Pipe A 201: Pipe B
300: Rubber band
310: inner circumferential surface 320:
330: low-raised projection 340: close-
350: Grating groove 360: Sagittal projection
370: Wire

Claims (2)

A rubber band 300 for inserting and interconnecting the ends of the pipe A 200 and the pipe B 201; A connecting main body 100 having a tensile part 110 which surrounds the surface of the rubber band 300 and has both ends fixed to the outside by banding to form a plurality of connecting grooves 111; A tensile rod A 120 and a tensile rod B 130 which are respectively inserted into the pair of the tensile portions 110 and in which the fastening holes A 121 and fastening holes B 131 are formed; Is inserted into the fastening hole A 121 and the fastening hole B 131 and is screwed to the nut 140 to tighten both ends of the tension member 110 of the fastening pipe body 100 to the inside of the pipe A 200, And a fastening bolt (150) for connecting and fixing the B (201)
On the inner circumferential surface of the rubber band 300,
A plurality of solid protrusions (320) protruding at regular intervals along a circumferential direction; And
A plurality of low-rise projections (330) protruding between the solid-state projections (320);
Respectively,
At the center of the rubber band 300,
An adhered surface portion 340 having a constant width is provided,
On the contact surface portion 340 of the rubber band 300,
A plurality of grid grooves 350 are formed at regular intervals,
Between the solid protrusions 320 and the low-temperature protrusions 330,
And a middle protrusion 360 relatively lower than a height of the solid protrusion 320 and relatively higher than a height of the low-temperature protrusion 330,
Inside the solid-state protrusions 320 and the low-level protrusions 330,
A wire 370 for holding the shape of the solid protrusions 320 and the low-rise protrusions 330 is further provided,
The protrusion height of the low-rise projection 330 is set to 1/5 to 1/10 of the projecting height of the solid-state projection 320 in order to solve the problem of low water tightness and the problem of not meeting the specifications of both pipes to be interconnected / 2,
When the end of the pipe A 200 and the pipe B 201 are inserted and connected to each other in a state in which the middle protrusion 360 is formed at a position close to the bottom protrusion 330, The rubber bands connecting the pipe A 200 and the pipe B 201 are connected to each other through the structure in which the lower protrusion 330 supports the middle protrusion 360 in a state in which the upper portion is bent upward in the direction of the lower protrusion 330. [ Wherein the water tightness of the pipe connector (300) is improved. delete

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