KR200163972Y1 - Coupling clamp for a pipe - Google Patents

Abstract

The present invention relates to a clamp for interconnecting a water pipe or sewage pipe, the main body 11 having a washer seating portion 11a at both opposite ends, and a slide portion 11c at one end thereof, and a washer seating. A bolt for mutually tightening the washer inserted into the part 11a, the circular rubber sleeve 13 seated on the inner surface of the main body 11, and the washer 12 'and 12' seated on the washer seating parts 11a and 11b. (14) and the nut (15) in the pipe connection clamp, the washer (12a, 12b; 12c, 12d) is fastened to the bolting surface and the fastening surface (121; 123) in contact with the nut (15), Protruding from both ends of the surface (121; 123) and the support portion (122; 124, 125) which is in close contact with the washer seating portion (11a, 11b) at a predetermined pressure when tightening, the hollow hole 120 is formed, This can be used to connect sewer pipes.

Description

Coupling clamp for a pipe

The present invention relates to a clamp for connecting water pipes or sewage pipes, and the connection work is made convenient.

As is well known, the clamps used for the connection of water pipes or sewer pipes must have sufficient tightening force to maintain the connected state while allowing the butt-to-butt parts between the pipes to be sealed.

Referring to the conventional pipe connection operation with reference to Figure 10, first as shown in (A) to align the pipe (21; 22) to remove the foreign material on the outer peripheral surface of the mutually opposite ends, then as shown in (B) As described above, the outer circumferential surfaces of the mutually opposite ends in which the foreign substances are removed are wrapped with the heat shrink sheet 31. Thereafter, as shown in (C), a metal patch 32 is attached to the outer circumferential surface of the heat shrink sheet 31, and heat is applied to the patch 32 to heat the heat shrink sheet 31 while heat-sealing the patch. After welding, as shown in (D), the outer peripheral surfaces of the patch 32 and the heat shrinkable sheet 31 are tightened through the clamp 40 to connect the pipes 21 and 22 to each other.

FIG. 11 is a perspective view of a simplified part of the conventional clamp shown in FIG. 10, whereby the conventional clamp 40 includes a band 41 made of polyethylene and a metal attached to opposite ends of the band 41. The fasteners 42a and 42b of the material, the washer 43a and 43b having a cross-sectional shape of the letter 'c' against the fastening portions 42a and 42b, and the fastening portions 42a and 42b and the washers 43a and 43b, respectively. The bolt 44 and the nut 45 are fastened to each other.

According to this conventional method, the sealing and tightening strength of the connecting portion are relatively satisfactory in connecting the upper and the sewage pipes 21 and 22 having a relatively large diameter, but after the heat shrinkable sheet 31 is heat-sealed to the connecting portion, Since the clamp 40 has to be assembled, the pipe work becomes cumbersome and difficult, resulting in a problem that productivity is greatly reduced.

On the other hand, the conventional clamp connecting the relatively small pipe is shown in Figures 12 to 13b, according to this, the circular shape in the '' 'cross-section, washer mounting portion (11a) on both opposing ends , A main body 11 having a slide portion 11c at one end thereof, a washer 12 ', 12' inserted into the washer seating portion 11a, and a circular rubber seated on the inner surface of the main body 11. And a bolt 14 which penetrates the sleeve 13 and opposing washer mounting portions 11a and 11b and is fastened to the washer 12 'and 12' seated thereon so as to reduce the diameter of the main body 11. .

Since the clamp has a rubber sleeve 13 for sealing on the inner surface of the main body 11, the tubes 21 'and 22' are disposed to face each other, and then the connecting portions of the tubes 21 'and 22' are wrapped. And a pair of washers 12 ', 12' spaced apart by applying torque to the bolts 14 to close each other, washer mounting portions 11a, 11b provided at both ends of the main body 11; ) Are close to each other to reduce the diameter of the body (11). Accordingly, the rubber sleeve 13 is tightly attached to the connection portions of the tubes 21 'and 22', and the connection portions of the tubes 21 'and 22' are sealed while the connection portions of the tubes 21 'and 22' are sealed. Tightening strength is maintained so that

However, in spite of the advantage that the pipe connection work is convenient, the use of the clamp has been extremely difficult because of its increased weight when it is applied to relatively large diameter water and sewage pipes.

The present invention has been devised in order to solve the above problems, in the connection of relatively large diameter water and sewage pipe, while maintaining the sealing and tightening strength sufficiently, the connection for clamping pipe to make the connection more convenient The purpose is to provide.

1 is a front view showing a first embodiment of a clamp according to the present invention;

2 is a cross-sectional view taken along line II of FIG. 1;

3 is a perspective view of the washer shown in FIG.

4 is a front view showing a second embodiment of the clamp according to the present invention;

5 is a perspective view of the washer shown in FIG. 4, FIG.

6 is a front view of a first modification according to the first embodiment,

7 is a front view of a second modification according to the first embodiment,

8 is a front view of a third modification according to the first embodiment,

9A is a front view of a fourth modification example according to the first embodiment,

9B is a cross-sectional view taken along the line II-II of FIG. 9A;

10 is a view for explaining the pipe work according to the prior art,

11 is a perspective view showing a conventional clamp shown in FIG.

12 is a perspective view showing another embodiment of the conventional clamp,

13A is a front view of the clamp shown in FIG. 12, FIG.

FIG. 13B is a cross-sectional view taken along the line III-III of FIG. 13A.

10; Clamp, 11; main body,

11 '; 1st body, 11 '; Second Body,

11a, 11b, 11h, 11i; Washer mounting portion, 11c, 11f; Slide,

11d, 11e; Hinge shaft connection, 11 g; Hinge Shaft,

11x, 11y, 11z; Incision grooves 12a, 12b, 12a ', 12b', 12c, 12d; Washer,

120; Hollow hole, 121,123; Fastening surface,

121a, 121b, 122a, 122b, 123a, 123b; Through Hole,

122,124,125; Support, 13; Rubber sleeve,

13a; Outermost sealing protrusion, 13b; Reinforcement sealing protrusion,

14,14 '; Bolt, 14a, 14a '; Headshot,

14b, 14b '; Threaded portion, 15,15 '; nut,

16a, 16b; Fixing part 21,22; tube.

The present invention for achieving the above object, the circular shape in the '' 'cross-sectional shape, provided with a washer mounting portion on both opposite ends, the main body is provided with a slide portion at one end, and the washer mounting portion In the pipe connection clamp consisting of a washer, a circular rubber sleeve seated on the inner surface of the main body, and a bolt and a nut tightening the washer seated on the washer seating portion, the washer is fastened to the fastening surface in contact with the bolt and nut, It consists of a support part which protrudes from both front ends of the surface and comes into close contact with the washer seating part at a predetermined pressure, and a hollow hole is formed between the washer seating part and the washer.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a front view showing a first embodiment of the clamp according to the present invention, Figure 2 is a cross-sectional view of the line I-I of Figure 1, Figure 3 is a perspective view of the washer shown in Figure 1, according to the present invention The clamp 10 according to the first embodiment of the present invention has a circular shape in a 'c' cross section, provided with washer seating portions 11a at opposite ends, and a slide portion 11c at one end thereof. The main body 11, the washer 12a, 12b inserted into the washer mounting portion 11a, the circular rubber sleeve 13 seated on the inner surface of the main body 11, and the washer mounting portions 11a, 11b. It consists of a bolt 14 and a nut 15 which mutually tighten the washer 12 'and 12'.

The washers 12a and 12b may include a fastening surface 121 contacting the bolt 14 and the nut 15, and support portions 122 protruding from both ends of the fastening surface 121 to form a semicircular shape. 120 is formed, and through holes 121a, 121b, 122a, and 122b into which the threaded portion 14b of the bolt 14 is inserted are formed in the fastening surface 121 and the support portion 122.

Meanwhile, the through holes 121a, 121b, 122a, and 122b of the washers 12a and 12b are also mounted on the washer mounting portions 11a and 11b to tighten the clamp 10 via the bolt 14 and the nut 15. The through hole is formed at a position corresponding to the through hole.

Therefore, after arranging the upper and the sewage pipes 21 and 22 to face each other, the clamp 10 is disposed to surround the connection portions of the pipes 21 and 22, and the torque to the bolt 14 and / or the nut 15 is torqued. When a pair of the washer mounting portions 11a and 11b spaced apart from the washer 12 and 12 seated thereon is close to each other, the diameter of the main body 11 is reduced. Therefore, the rubber sleeve 13 is in close contact with the connection portion of the tube (21, 22) at a predetermined pressure, the tightening strength so that the connection state of the tube (21, 22) is maintained while sealing the connection portion of the tube (21, 22) maintain.

FIG. 4 is a front view showing a second embodiment of the clamp according to the present invention, and FIG. 5 is a perspective view of the washer shown in FIG. 4, whereby the washer 12c and 12d is a bolt 14 and a nut ( 15, the hollow surface 120 is formed by the fastening surface 123 and the support portions 124 and 125 protruding from both ends of the fastening surface 123 to form a semicircular shape, and the support portions 124 and 125 are fastening surfaces 123. It protrudes in parallel to form an angle of 90 ° from both ends of the), and has a structure of forming a cross-sectional shape of the 'C' overall. Through-holes 121a, 121b, 122a, and 122b into which the threaded portion 14b of the bolt 14 is inserted are formed in the fastening surface 123.

According to the present invention, in the conventional clamp, washer (12a, 12b; 12c, 12d) in which hollow holes (120) are formed instead of the circular shaft-shaped washers (12 ', 12'), which occupy a large specific gravity of the total weight. Since the use of the clamp 10 according to the present invention for the connection of the water and sewage pipes (21, 22), the difficulty of handling due to the increase in its own weight is eliminated.

6 is a front view of the first modification according to the first embodiment, whereby a plurality of cutting grooves 11x, 11y, 11z are formed at both bent surfaces in the body 11, thereby clamping the clamp 10. When assembling / disassembling, if both ends of the body 11 of the clamp 10 are folded outwards, the clamp 10 is opened while bending the portions formed with the cutouts 11x, 11y, and 11z, Assembling / disassembling of the clamp 10 becomes convenient.

7 is a front view of a second modified example according to the first embodiment, whereby the body 11 is divided into two bodies 11 'and 11', and at the lower end of the first body 11 '. While the slide portion 11f is provided, hinge shaft connecting portions 11d and 11e are provided at the lower ends of the first and second bodies 11 'and 11', respectively, so that they can be folded through the hinge shaft 11g, Assembling / disassembling of the clamp 10 becomes convenient.

8 is a front view of a third modified example according to the first embodiment, whereby the body 11 is divided into two bodies 11 ′ and 11 ′, and the bottom of any one body 11. While the slide portion 11f is provided at the bottom, both of the bodies 11 'and 11' are provided with washer seating portions 11h and 11i, respectively, and hollow holes 120 are formed in these washer seating portions 11h and 11i. The formed washers 12a and 12b are provided, and the two bolts 14 and 14 'and the nuts 15 and 15' are joined to each other in a separated state. Although this method has a disadvantage in that the assembly work is cumbersome due to the large number of parts, it is very advantageous in connecting the water and sewage pipes 21 and 22 with a considerably large diameter.

In the first and second embodiments and modifications thereof, the rubber sleeve 13 seated on the body 11 can be freely moved inside the body 11, but as shown in FIGS. 9A and 9B, Fixing portions 16a and 16b may be formed at both bent surfaces of the body 11, such that the rubber sleeve 13 may be fixed to the body 11.

Here, the modification can be applied not only to the first embodiment but also to the second embodiment.

Meanwhile, as shown in FIG. 13B, the rubber sleeve 13 of the conventional clamp has outermost sealing protrusions at both ends in order to prevent the fluid flowing along both the tubes 21 'and 22' from leaking to the outside. 13a) is formed to face each other, but such an outermost sealing projection 13a does not have a sufficient sealing function. However, when at least one pair of reinforcing sealing protrusions 13b is formed between the pair of outermost sealing protrusions 13a as shown in FIGS. 2 and 9B of the present invention, each tube 21; Since the sealing surface is layered along the circumference, there is an advantage that the sealing function is improved. The cross-sectional shape of the pair of the outermost sealing protrusion 13a and the reinforcing sealing protrusion 13b may be variously modified as necessary.

According to the present invention as described above, a rubber sleeve is provided inside the body, and the washer mounting portion is provided at both ends of the body, and the washer is provided at the washer mounting portion, respectively, so that the bolt and the nut are tightened through the bolt. In the conventional pipe connection clamp, since the hollow hole is formed by changing the shape of the washer, even if the clamp with a rubber sleeve is applied to the connection of the upper and sewer pipes having a relatively large diameter, the difficulty of handling due to the increase of its own weight is difficult. The effect is resolved.

Therefore, when using the clamp according to the present invention, compared with the prior art there is an effect that the assembly work is simplified and convenient.

Claims (8)

The main body 11 and the washer seating portion 11a each having a circular shape in a cross-sectional shape having a 'c' shape and having a washer seating portion 11a at opposite ends thereof, and having a slide portion 11c at one end thereof. And a bolt 14 for tightening a washer inserted into the washer, a circular rubber sleeve 13 seated on the inner surface of the main body 11, and a washer 12 ', 12' seated on the washer seating portions 11a, 11b. In the clamp for pipe connection consisting of a nut (15), The washers 12a, 12b; 12c, 12d are projected from both ends of the fastening surface 121 and 123 in contact with the bolt 14 and the nut 15, and the washer mounting portion when tightened by protruding from both ends of the fastening surface 121 and 123. Clamps for pipe connection, characterized in that the hollow hole 120 is formed of a support portion (122; 124, 125) in close contact with the predetermined pressure (11a, 11b). The clamp of claim 1, wherein the washers (12a, 12b) are connected while the support part (122) forms a semicircle. The clamp of claim 1, wherein the washers (12c, 12d) protrude in parallel while the support part (122) is formed at an angle of 90 ° from both ends of the fastening surface (123). The pipe clamp according to any one of claims 1 to 3, wherein a plurality of cutout grooves (11x, 11y, 11z) are formed at both bent surfaces of the body (11). According to any one of claims 1 to 3, wherein the body 11 is separated into two bodies (11 ', 11'), the slide portion 11f at the bottom of any one of the body (11 '; 11') C) is provided, the hinge shaft connecting portion (11d, 11e) is provided at the bottom of both bodies (11 ', 11'), respectively, foldable via the hinge shaft (11g). According to any one of claims 1 to 3, wherein the body 11 is separated into two bodies (11 ', 11'), while the slide portion (11f) is provided at the bottom of any one of the body (11) Washers seating portions 11h and 11i are provided at the lower ends of both bodies 11 'and 11', respectively, and washers 12a and 12b having hollow holes 120 formed in these washers seating portions 11h and 11i. 12d) is provided, the two bolts (14, 14 ') and the nut (15, 15') in the state of being separated from each other via a coupling for the connection clamp. The fixing part 16a, 16b is provided in the both bent surface of the said body 11, The rubber sleeve 13 is fixed in the state seated in the body 11. Clamp for pipe connection, characterized in that. The method of claim 1, wherein at least one pair of reinforcing sealing protrusions (13b) are formed at predetermined intervals between the pair of outermost sealing protrusions (13a) formed at both ends of the rubber sleeve (13). Clamp for pipe connection.