KR20020078164A - Joint For Plumbing - Google Patents

Abstract

PURPOSE: A piping joint is provided to reduce fault rate of piping and to improve productivity by detachably and simply connecting pipes using the piping joint without performing an additional action. CONSTITUTION: A piping joint includes a conical spring(40) having a contact section attached to an outer surface of a pipe in a spiral pattern and a gap section. A seal ring(32) is closely attached to an outer surface of the pipe. A body(31) of the piping joint includes the conical spring(40) and the seal ring(32). The body(31) has a taper section(39) formed at one side thereof with at least one perforation hole(36) and a connection member(37) extending from the other side of the taper section(39). The connection member(37) has an inner diameter smaller than an outer diameter of the pipe so as to prevent pipe from being introduced thereinto.

Description

Joint For Plumbing

The present invention relates to a pipe joint for connecting pipes, and more particularly, to a pipe for pipes that can be easily disassembled and assembled in the joint.

In general, many joints are used for electric power pipes such as construction power lines, telephone lines, fluid pipes such as water pipes, gas pipes, sewage pipes, and pressure pipes for pneumatic or hydraulic equipment. For example, straight joints, cross joints, "T" shaped joints, and the like are used.

By the way, in the case of a joint using a screw coupling, while a reliable and permanent piping is possible, it is inconvenient to screw and release in a narrow space, there is a disadvantage that requires a lot of time and labor in the pipe. Therefore, a simple insertion type joint is widely used to easily connect pipes and complete piping work without a separate work tool even in a narrow work space.

1 is a partial cross-sectional view showing a coupling state of such a conventional simple insertion pipe joint. Hereinafter, the configuration of the pipe joint shown in FIG. 1 will be described.

As shown in FIG. 1, the conventional pipe joint 10 has a sealing portion 16 in an internal location, and has a tapered portion 12 tapered to have a gradually narrower diameter toward the outer end thereof. A slide movement is possible along the inner circumferential surface inside each of the tapered portions 12.

In addition, the pipe fixing jaw 22 is arranged to fix or release the pipe 5 fitted inside while the inner diameter thereof is reduced or expanded in accordance with the slide movement along the inner peripheral surface of the tapered portion 12. A ring 24 is formed in the middle region of the fixed jaw 22. In addition, the long hole 14 is formed in one side of each said taper 30.

A locking jaw 18 is formed between the two seals 16 so that the position of the pipe 5 can be constant. A spring 20 is provided to push the fixed jaw 22 toward the tapered portion 12. It is. In addition, a pipe insertion hole 26 is formed at one side of the tapered portion 12 so that the pipe 5 can be slid.

Referring to the operation method of a conventional pipe joint having such a configuration as follows. When the pipe 5 is inserted, the fixed jaw 22 slides in the same direction while the inner diameter is widened. Therefore, the pipe 5 enters the engaging jaw 18 without any resistance of the fixed jaw 22. When the position of the pipe 5 is fixed, the outside and the inside of the pipe are separated by the sealing 16, thus preventing leakage. Then, the fixed jaw 22 is pushed toward the pipe insertion opening 26 by the elastic force of the spring 20, and is firmly fixed between the outer diameter of the pipe 5 and the inner diameter of the tapered portion 12.

If the pipe 5 is to be removed in such a state, a greater frictional force acts on the inner diameter of the fixed jaw 22 and the tapered portion 12 and the outer diameter of the pipe 5 by the force. This is because the fixed jaw 22 is wedge action. Therefore, it is operated so that the pipe 5 does not come out by simply pulling the pipe 5.

If the pipe 5 is to be removed, the fixed jaw 22 exposed through the long hole 14 is first retracted by a separate tool. Then, as the spring 20 is compressed, a gap is formed between the fixed jaw 22 and the inner diameter of the tapered portion 12. In this state, when the pipe 5 is pulled out by hand, the pipe 5 is pulled out.

However, the conventional pipe joint has a disadvantage of requiring many parts, such as a ring 24, a fixed jaw 22, a spring 20, a sealing 16. As a result, the production cost could rise and the defective rate could increase.

Accordingly, the present invention has been made to solve the above problems, the first object of the present invention is to provide a pipe joint that can be easily connected and detachable without a separate auxiliary operation. .

It is a second object of the present invention to provide a pipe joint that can be widely used for permanent coupling and temporary coupling due to its fastening property and sealing property while being easy to fasten and detach.

A third object of the present invention is to provide a pipe joint that can be easily piped even in a narrow space by not using a screw fastening method.

A fourth object of the present invention is to provide a pipe for plumbing which can minimize the number of components to lower the defective rate and increase the productivity.

The object of the present invention as described above is a gap in which the inner diameter of the contact portion 42 in close contact with the outer surface of the pipe 5 in a helical shape, and the gap between the contact portion 42 to maintain a distance from the pipe 5 Conical spring 40 to form a portion 44;

Sealing 32 that can be in close contact with the outer diameter of the pipe (5); And

It includes a body 31 including the conical spring 40 and the sealing 32, the body 31,

The pipe 5 may be reciprocated to one side, the protrusion piece 33 of a predetermined height is projected inwardly so that the conical spring 40 is disposed between the protrusion piece 33 and the one side, the conical spring ( A taper portion 39 having at least one through hole 36 formed at one side thereof so that a portion of the portion 40 is exposed; Wow

And a connecting portion 37 extending from the other side of the taper portion 39 and preventing entry of the pipe 5 by forming an inner diameter smaller than the outer diameter of the pipe 5.

The sealing 32 can be achieved by a pipe joint, characterized in that provided between the connecting portion 37 and the protruding piece 33.

In addition, the outer diameter of the conical spring (40b) is preferably formed with a flat portion 46 of a predetermined size continuously, the inner diameter of the tapered portion (39a) is preferably formed so as to fit the shape of the flat portion (46).

Optionally, the pipe joint, characterized in that the planar portion (46) of a predetermined size is continuously formed in the inner diameter of the conical spring (40b) in contact with the pipe (5).

In addition, it is more preferable that the flat portion 46 is further provided with a comb-shaped groove 48 to increase the frictional force.

Other objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and the preferred embodiments associated with the accompanying drawings.

1 is a partial cross-sectional view showing a coupling state of a conventional pipe joint;

2 is a partial cross-sectional view of a pipe joint according to an embodiment of the present invention;

3 is a right side view of the pipe joint shown in FIG. 2;

Figure 4 is a perspective view showing only the coupling state of the conical spring 40 and the pipe 5 in Figure 2,

5 is a side cross-sectional view of a pipe joint showing a second embodiment by modifying the A-A cross section of FIG. 2;

6 is a partial perspective view of a pipe joint showing a third embodiment by modifying the conical spring shown in FIG. 5.

<Short Description of Main Reference Signs>

5: pipe, 30 joint,

31 body, 32 sealing,

33: protrusion piece, 36: through hole,

37: connection portion, 39: tapered portion,

40: conical spring, 42: contact portion,

44: gap portion, 46: flat portion,

48: comb groove.

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

2 is a partial cross-sectional view of a pipe joint according to an embodiment of the present invention, FIG. 3 is a right side view of the pipe joint shown in FIG. 2, and FIG. 4 is a conical spring 40 and a pipe 5 of FIG. 2. Is a perspective view showing only a coupled state of the.

As shown in Figures 2, 3, 4, the straight joint 30 is composed of approximately the body 31, the conical spring 40, the sealing 31, both sides are symmetrical with respect to the center, both ends Each pipe 5 can enter and exit.

The body 31 of the joint 30 is composed of a tapered portion 39 and the connection portion 37 connected thereto. The taper portion 39 is formed with a hole slightly larger than the outer diameter of the pipe 5 so that the pipe 5 can be inserted into one side, and has a tapered shape in which the inner diameter gradually widens toward the center.

The protruding piece 33 is located in the part where the taper shape ends, and protrudes inwardly in the annular shape of predetermined height toward the inside. One side of the protruding piece 33 supports the conical spring 40, and the other side forms a space in which the sealing 32 is fitted.

The sealing 32 is made of a material such as rubber or silicone, and is configured to be in close contact with the outer diameter of the pipe 5 to maintain airtightness.

The connecting portion 37 is a portion in which the contents of the actual pipe 5 flow, and the inner diameter thereof is slightly smaller than the outer diameter of the pipe 5. Thus, the inserted pipe 5 enters the connection 37 and stops due to the difference in diameter.

3, two through holes 36 are formed at one end of the tapered portion 39, and they are symmetrical with respect to the center, so that a part of the conical spring 40 is exposed. Consists of. This through hole 36 is used to pull out the pipe 5 by allowing the cone spring 40 to be compressed with a pointed tool (not shown). This will be described later in detail.

As shown in FIG. 4, the conical spring 40 has a rectangular cross section in order to widen the surface area of the coil, and is a compression spring that forms a conical shape with the same slope as the tapered portion 39. The conical spring 40 is composed of approximately the contact portion 42 and the gap 44.

Contact portion 42 is such that the inner diameter can be in close contact with the outer diameter of the pipe 5, the outer diameter is formed in a structure that can be in close contact with the tapered portion (39). The conical spring 40 is assembled in a somewhat compressed state in the axial direction, and forms a somewhat compressed state in the radial direction. This is because the conical spring 40 should be in close contact with the inner diameter of the tapered portion 39 and in close contact with the protruding piece 33 even under normal conditions.

The gap portion 44 extends in the same spiral shape at the end of the contact portion 42. The inner diameter of the gap portion 44 is larger than the outer diameter of the pipe 5 so as to be spaced apart from each other, and the outer diameter is formed in a structure that can be in close contact with the taper 39. This gap 44 causes the inner diameter of the gap 44 to gradually fall on the outer diameter of the pipe 5 when the conical spring 40 is gradually compressed.

Hereinafter, an operation method of the pipe joint having the above configuration will be described in detail. First, a case in which the pipe 5 is connected to the joint 30 will be described.

When the pipe 5 is to be connected, the pipe 5 may be simply inserted deeply through the tapered portion 39 without any auxiliary operation until the pipe 5 is stopped. At this time, as the pipe 5 enters, it is compressed while retreating in the same direction by the contact portion 42 of the conical spring 40. That is, as the pipe 5 gradually enters, the portion of the contact portion 42 in the same conical spring 40 is reduced, and the portion of the gap 44 is increased. This means that the pipe 5 can move relative to the cone spring 40 more freely.

When the entry of the pipe 5 stops, the cone spring 40 is brought into close contact between the outer diameter of the pipe 5 and the inner diameter of the tapered portion 39 by the restoring force. At this time, the contact portion 42 gradually increases, and the gap portion 44 gradually decreases, so that the contact area between the cone spring 40 and the pipe 5 as a whole increases and the frictional force increases. At the same time, the sealing operation 32 comes into close contact with the outer diameter of the pipe 5, thereby ending the connection operation.

If the pipe 5 is to be pulled out as it is, the cone spring 40 acts as a wedge between the inner diameter of the tapered portion 39 and the outer diameter of the pipe 5 to have a greater frictional force. Therefore, the pipe 5 is not drawn out by pulling the pipe 5 as it is.

Hereinafter, a case in which the pipe 5 is separated from the joint 30 will be described. First, a pair of pointed tools, such as an awl, is inserted into the through hole 36 to compress the conical spring 40. As the conical spring 40 is gradually compressed, the gap 44 is increased and the contact 42 is reduced, so that the pipe 5 can be relative to the conical spring 40. In this state, the pipe 5 is pulled out by hand.

FIG. 5 is a side cross-sectional view of a pipe joint showing a second embodiment by modifying the A-A cross section of FIG. 2. As shown in Figure 5, in order to further increase the friction force, the inner diameter of the conical spring 40 is made into a dodecahedron shape. In this case, the frictional force is further increased between the inner diameter of the conical spring 40a and the pipe 5.

6 is a partial perspective view of a pipe joint showing a third embodiment by modifying the conical spring shown in FIG. 5. As shown in FIG. 6, when a plurality of planes are formed in the inner diameter of the conical spring 40b and a plurality of comb-shaped grooves 48 are formed on the plane, surface roughness may be increased to increase frictional force. .

In the present invention has been shown and described with respect to the straight pipe joint, in addition to the cross-shaped, "T" type can be applied in the same way to the various types of joints, of course.

Pipe joints of the present invention can be used in electrical pipes, such as construction power lines, telephone lines, signal lines, fluid pipes such as water pipes, gas pipes, sewage pipes, pressure pipes for pneumatic or hydraulic equipment.

The pipe joint of the present invention can be produced by injecting a plastic resin material or by die casting aluminum.

In the second embodiment of the present invention, the tapered portion formed in a regular 12 hexagon is illustrated and described, but it can be processed in various forms such as a regular hexagon or a regular 20 hexagon.

In the third embodiment of the present invention, a comb pattern is formed on the outer diameter of the conical spring, but a comb pattern groove that performs the same function may be formed on the inner diameter.

The through hole 36 of the present invention can be deleted as needed, in which case the pipe 5 once fastened to maintain the permanent coupling form.

According to the pipe joint according to the present invention as described above, there is an advantage that can be very simply connected to the pipe without a separate auxiliary operation, and also can be separated.

In addition, the fastening and detachment of the pipe is easy, but also fastening and sealing properties can be widely used for permanent coupling and temporary coupling.

In addition, there is an effect that can be easily and quickly piping work in a narrow space by not using a screw fastening method. In addition, there is a feature that can minimize the number of components to lower the failure rate, increase the productivity.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it is possible to make various modifications or variations without departing from the spirit and scope of the invention. Accordingly, the appended claims will cover such modifications and variations as fall within the spirit of the invention.

Claims (3)

A conical spring whose inner diameter is spirally in close contact with the outer surface of the pipe 5, and a gap 44 extending from the contact portion 42 in a spiral shape and spaced apart from the pipe 5. 40; Sealing 32 that can be in close contact with the outer diameter of the pipe (5); And It includes a body 31 including the conical spring 40 and the sealing 32, the body 31, The pipe 5 may be reciprocated to one side, the protrusion piece 33 of a predetermined height is projected inwardly so that the conical spring 40 is disposed between the protrusion piece 33 and the one side, the conical spring ( A taper portion 39 having at least one through hole 36 formed at one side thereof so that a portion of the portion 40 is exposed; Wow And a connecting portion 37 extending from the other side of the taper portion 39 and preventing entry of the pipe 5 by forming an inner diameter smaller than the outer diameter of the pipe 5. The sealing 32 is a pipe joint, characterized in that provided between the connecting portion 37 and the protruding piece (33). The method of claim 1, The pipe joint, characterized in that the inner surface of the conical spring (40b) in contact with the pipe (5) is formed with a continuous flat portion 46 of a predetermined size. 3. The pipe joint according to claim 2, wherein the flat portion (46) is further provided with a comb-shaped groove (48) to increase frictional force.