KR102472669B1 - An Assembly for Connecting Pipes without Welding and Pressing - Google Patents

Abstract

The present invention relates to a weldless and crimp-free joint assembly. The non-welding and non-crimping pipe joint assembly includes a connection clamp consisting of a pair of sub-clamps 11a and 11b that can be fastened to each other; Packing (12) coupled to the tubes (L1, L2) connected to each other; and a sleeve 13 disposed between the connecting clamp and the packing 12, and the sleeve 13 fixes the tubes L1 and L2 by pressure according to fastening to the connecting clamp.

Description

An Assembly for Connecting Pipes without Welding and Pressing}

The present invention relates to a weldless and non-crimped pipe joint assembly, and more specifically, to a weldless and non-crimped pipe joint assembly capable of connecting pipes having various shapes to each other without welding or crimping.

Pipes for transporting fluids need to be connected to each other for connection in various directions or for remote installation. Tubes or pipes may be made of various materials, and the connection between different tubes needs to be structurally stable and prevent leakage for a long period of time without changing the connection structure due to external impact. Methods such as welding or connectors can be used to connect different tubes. Patent Publication No. 2000-0057989 discloses a pipe joint capable of introducing and deriving fluid pressure and the like through a communicating passage as it is connected to a fluid pressure device such as a cylinder. It is structurally advantageous that different metal pipes are connected by a method such as welding or compression according to pipe expansion. However, the connection by welding or compression may be difficult to apply depending on the structure of the pipe while reducing the efficiency of the pipe installation work. In contrast, the connection by a joint or connector has the advantage of being easy to install, but has the disadvantage of being structurally unstable. Therefore, it is necessary to develop a pipe joint method that can compensate for these disadvantages, but the prior art does not disclose this.

The present invention is to solve the problems of the prior art and has the following object.

Prior Art 1: Patent Publication No. 2000-0057989 (SMC Co., Ltd., published on September 25, 2009) Pipe Joint

An object of the present invention is to provide a non-welding and non-crimping pipe joint assembly having the same structural stability as a welding method while being applicable to pipes having various diameters.

According to a preferred embodiment of the present invention, a welding-free and non-compression-free pipe joint assembly includes a connection clamp consisting of a pair of sub-clamps fastening to each other; Packing coupled to the tubes connected to each other; and a sleeve disposed between the connecting clamp and the packing, and the sleeve fixes the tube by pressure according to fastening to the connecting clamp.

According to another preferred embodiment of the present invention, the pair of sub-clamps include receiving grooves in which the sleeves are accommodated.

According to another preferred embodiment of the present invention, it further includes a contact prevention projection formed on the inner circumferential surface of the packing.

The non-welding and non-crimping pipe joint assembly according to the present invention is applied to the connection of, for example, a steel pipe having a large diameter or a pipe made of a similar material to have structural stability equivalent to that of a welding method. In general, for the connection of different tubes, the end of one tube is expanded so that the end of another tube can be inserted. In addition, the ends coupled to each other may be connected to each other by compression. The pipe joint assembly according to the present invention does not require such a pipe expansion and compression process, and allows different pipes to be connected to each other stably without using a jig or press for the compression process. The pipe joint assembly according to the present invention is applied to pipe joints having various structures installed in various positions to improve work efficiency. The pipe joint assembly according to the present invention can be applied by appropriate deformation regardless of the diameter of the pipe, the shape of the cross section, or the material.

1 shows an embodiment of a welding-free and compression-free joint assembly according to the present invention.
Figure 2 shows an embodiment of a fastening connector applied to the pipe joint assembly according to the present invention.
Figure 3 shows an embodiment of the packing and sleeve applied to the pipe joint assembly according to the present invention.
Figure 4 shows an embodiment to which the pipe joint assembly according to the present invention is applied.

Below, the present invention will be described in detail with reference to the embodiments presented in the accompanying drawings, but the embodiments are for a clear understanding of the present invention, and the present invention is not limited thereto. In the following description, components having the same reference numerals in different drawings have similar functions, so repeated descriptions are not made unless necessary for understanding the invention, and well-known components are briefly described or omitted, but the present invention It should not be understood as being excluded from the embodiment of.

1 shows an embodiment of a weldless and crimp-free joint assembly 10 according to the present invention.

Referring to Figure 1, the welding and compression-free pipe joint assembly 10 is a connection clamp consisting of a pair of sub-clamps (11a, 11b) capable of fastening to each other; Packing (12) coupled to the tubes (L1, L2) connected to each other; and a sleeve 13 disposed between the connecting clamp and the packing 12, and the sleeve 13 fixes the tubes L1 and L2 by pressure according to fastening to the connecting clamp.

The connection clamp may consist of a pair of sub-clamps 11a and 11b having the same or similar structure, and each of the sub-clamps 11a and 11b may be coupled to both ends of the two tubes L1 and L2 connected to each other. can The sub-clamps 11a and 11b may be coupled to each other by fixing means 14a and 14b such as bolts and fastening means 15a and 15b such as nuts coupled to both sides of each. The sub clamps 11a and 11b may be made of a metal material such as stainless steel, aluminum alloy, brass alloy, or bronze alloy, but are not limited thereto. The tubes L1 and L2 connected to each other may have various diameters, and may be made of, for example, stainless steel, cast iron, or a similar material, but are not limited thereto. Packing 12 may be coupled to the ends of the tubes L1 and L2 connected to each other. The packing 12 may have a cylindrical shape with both sides open as a whole, and the packing 12 may be coupled in a form connecting the ends of the tubes L1 and L2 connected to each other. The packing 12 may have a function of preventing the sleeve 13 or the connecting clamp from moving along the extending direction of the tubes L1 and L2 while preventing leakage of the connecting portion. Packing 12 may be made of, for example, ethylene propylene rubber (EPDM) or a similar material, but is not limited thereto. The packing 12 may be made of various materials having elasticity or stretchability and a high surface friction coefficient. A sleeve 13 having a hollow cylindrical shape may be fixed between the connecting clamp and the packing 12 . The sleeve 13 may have a hollow cylindrical shape as a whole and may have a structure capable of being fixed to a groove formed in a connecting clamp. The sleeve 13 may be made of the same or similar material as the connecting clamp, and may be made of, for example, a metal material. Alternatively, the sleeve 13 may be made of a material having lower strength than the connection clamp. The sleeve 13 may have a function of transmitting the pressure of the connecting clamp to the different tubes L1 and L2 through the packing 12. The sleeve 13 may be made of a material having the same or similar thermal expansion rate as that of the connecting clamp. Optionally, the sleeve 13 may be made in a coupled state by the packing 12 and an adhesive or similar material. In this way, in a state where the packing 12 is coupled to the inner circumferential surface of the sleeve 13, the sleeve 13 and the packing 12 are coupled to the ends of the tubes L1 and L2, so work efficiency can be improved. The packing 12 or the sleeve 13 may be coupled to the tubes L1 and L2 in a variety of ways and is not limited to the illustrated embodiment.

Below, various configurations forming the fitting assembly 10 are described.

Figure 2 shows an embodiment of a fastening connector applied to the pipe joint assembly according to the present invention.

Referring to FIG. 2 , the pipe joint assembly includes a receiving groove 114 formed in a pair of sub-clamps 11a and 11b to receive a sleeve. Each of the sub-clamps 11a and 11b forming the connection clamp 11 includes a semi-cylindrical clamp body 111; Fastening tabs 112a and 112b formed at both ends of the clamp body 111; And it may include a receiving groove 114 formed on the inner surface of the clamp body 111. The clamp body 111 may have a semi-cylindrical shape having a certain width and thickness, and the two clamp bodies 111 may wrap the circumferential surface of the tube while the sub-clamps 11a and 11b are fastened to each other. The fastening tabs 112a and 112b may be formed to protrude outward from both ends of the clamp body 111, and fastening holes 113a and 113b in which fixing means are coupled to the fastening tabs 112a and 112b may be formed. have. Inner surfaces of the fastening tabs 112a and 112b may form an inclined surface 112c, and may have, for example, a shape in which the thickness gradually decreases along the protruding direction. For example, the inclined surface 112c may be formed to have an inclination angle of 1 to 30 degrees with respect to the vertical direction. Optionally, the inclined surface 112c may be formed to be inclined after being extended by a predetermined height in a vertical direction. Strong pressure can be applied to the sleeve by the connection clamp 11 due to the inclined surface 112c formed on the fastening tabs 112a and 112b. In addition, the fastening portion flexibly responds to external factors such as shock or vibration. The inclined surface 112c may be formed in various structures and is not limited to the presented embodiment. According to one embodiment of the present invention, the receiving groove 114 for fixing the sleeve may be formed on the inner surface of the clamp body 111. The accommodation groove 114 may be formed to have a width and depth corresponding to the width and thickness of the sleeve, and may have a structure in which both edges of the semi-cylindrical clamp body 111 face each other and form a semi-circular wall. . The sleeve is received and fixed in the receiving groove 114, and the tube can be stably maintained in a connected state by the pressure applied to the clamp body 111 by the fixing means coupled to the fastening tabs 112a and 112b. Receiving groove 114 can be made of various structures in which the sleeve can be accommodated and fixed, and is not limited to the presented embodiment.

Figure 3 shows an embodiment of the packing and sleeve applied to the pipe joint assembly according to the present invention.

Referring to FIG. 3 , contact prevention protrusions 122 may be formed on the inner circumferential surface of the packing 12 . The packing 12 may be formed of a ring-shaped or hollow cylinder-shaped packing body 121 and a contact prevention protrusion 122 formed to protrude inward along the middle portion of the inner circumferential surface of the packing body 121. . The contact prevention protrusion 122 may form a circular edge, and both ends of the tube may be in contact with both surfaces of the contact prevention protrusion 122 . As such, the anti-contact protrusion 122 may be positioned between the ends of different tubes and may have a function of absorbing movement due to impact such as vibration that may be applied to the two tubes by elasticity or elasticity. have. Alternatively, the anti-contact protrusion 122 may be made of a material having a low coefficient of thermal expansion, and thereby may have a function of buffering a change in length due to thermal expansion or contraction of the tube. The contact preventing protrusion 122 may have, for example, a thickness capable of accommodating a change in length due to thermal expansion or contraction of the tube and a height corresponding to the thickness of the tube, but is not limited thereto.

Referring to the bottom of FIG. 3 , the sleeve 13 may include a hollow cylindrical or ring-shaped sleeve body 131 and a fixing groove 132 formed on an inner surface of the sleeve body 131 . The fixing groove 132 may be formed in a circular shape along the inner surface of the sleeve body 131 and may be made into a structure in which the packing 12 can be accommodated. The packing 12 may be fixed to the fixing groove 132 while the pipe joint assembly connects different pipes. The thickness of the packing 12 may be greater than the height of the fixing groove 132 , and thus a portion of the packing 12 may protrude out of the fixing groove 132 . As described above, the sleeve may be accommodated in the receiving groove formed in the sub clamp. As a result, the packing 12 can be stably fixed, and thus the sleeve 13 can be fixed in a predetermined position to stably connect different tubes. Packing 12 or sleeve 13 can be made in a variety of structures and is not limited to the presented embodiment.

Figure 4 shows an embodiment to which the pipe joint assembly according to the present invention is applied.

Referring to Figure 4, two different linear pipes (L2, L3) can be connected by an L-shaped connecting pipe (L1), the connecting pipe (L1) can be connected to each other by the pipe joint assembly (10a, 10b) have. Linear tubes L2 and L3 may be disposed on both sides of the connecting tube L1, and may be connected to each other by packing 12, respectively. Alternatively, the packing 12 may be connected to each other by the coupled sleeve 13, whereby the connector L1 and the linear tubes L2 and L3 may be connected to each other. In this state, the sub-clamps 11a and 11b can be coupled to the outside of the sleeve 12, and can be fastened to each other by the fixing means 14 and the fastening means 15. The fixing means 14 may be composed of, for example, a fixed head 141 and a fixed leg 142, and the fastening means 15 is a fastening hole 152 into which the fastening body 151 and the fixed leg 142 are inserted. can be made with The fixing means 14 and the fastening means 15 may have an anti-loosening structure, but are not limited thereto, and the fixing means 14 or fastening means 15 having various structures may be applied to the pipe joint assembly, and the present invention is not limited to this.

The non-welding and non-crimping pipe joint assembly according to the present invention is applied to the connection of, for example, a steel pipe having a large diameter or a pipe made of a similar material to have structural stability equivalent to that of a welding method. The pipe joint assembly according to the present invention is applied to pipe joints having various structures having various shapes installed in various positions to improve work efficiency. The pipe joint assembly according to the present invention can be applied by appropriate deformation regardless of the diameter of the pipe, the shape of the cross section, or the material.

Although the present invention has been described in detail with reference to the presented embodiments above, those skilled in the art will be able to make various modifications and variations without departing from the technical spirit of the present invention with reference to the presented embodiments. . The present invention is not limited by these variations and modifications, but is limited only by the claims appended below.

10, 10a, 10b: conduit assembly 11a, 11b: sub clamp
12: packing 13: sleeve
111: clamp body 112a, 112b: fastening tab
112c: inclined surface 113a, 113b: fastening hole
114: receiving groove 121: packing body
122: contact prevention protrusion 131: sleeve body
132: fixed groove

Claims (1)

A connection clamp consisting of a pair of sub-clamps 11a and 11b fastening to each other;
Packing (12) coupled to the tubes (L1, L2) connected to each other;
A sleeve 13 which is disposed between the connecting clamp and the packing 12 and fixes the tubes L1 and L2 by pressure according to the fastening of the connecting clamp;
Contact prevention protrusions 122 formed on the inner circumferential surface of the packing 12; and
It is formed on the pair of sub-clamps 11a and 11b and includes a receiving groove 114 in which the sleeve 13 is accommodated,
The sleeve 13 includes a hollow cylinder-shaped sleeve body 131 and a fixing groove 132 formed in a circular shape along the inner surface of the sleeve body 131 to accommodate the packing 12, and the packing ( The thickness of 12) is larger than the height of the fixing groove 132, and a part of the packing 12 protrudes to the outside of the fixing groove 132,
The sleeve 13 is made in a state in which the packing 12 and the adhesive are coupled,
The receiving groove 114 is formed to a width and depth corresponding to the width and thickness of the sleeve and has a structure in which both edges of the semi-cylindrical clamp body 111 face each other and become a semicircular wall. Welded and crimp-free fitting assemblies.

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