JP3228089U - Piping connection structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pipe having a connection structure including a main body, an inner bushing, an outer bushing and a cap. SOLUTION: The pipe has a hollow annular structure, and has a main body 1 provided with a first protrusion 11 on the outside and an inner bushing 2, which can be installed inside the main body 1 and both ends of the main body 1. An inner bushing 2 having a gap between the inner bushing 2 and both ends of the inner bushing 2, an outer bushing 3 which can be installed in the inner bushing 2 and one end of which can protrude into the gap, and a main body 1 and an outer bushing 3 It is provided with a cap 4 that can be installed on the outside of the bushing and can move the outer bushing 3 into the gap. [Selection diagram] Fig. 1

Description

The present invention relates to the field of piping equipment, and particularly to the piping connection structure.

Pipeline installation work often limits the length of pipes to facilitate storage and transportation of pipes, and only when the pipeline needs to be laid, connect the corresponding pipes. Install.

Especially in today's society, air conditioners are indispensable cooling products for people's production and life, and the connection of pipes becomes complicated during the installation of air conditioners. In the prior art, the pipes are generally connected by welding or screws, and these connection methods are not robust due to safety risks or inconvenient connections.

The present invention provides a pipe connection structure capable of solving one or more of the problems of the prior art.

In one aspect of the invention,
The main body, which has a hollow annular structure and has a first protrusion on the outside,
An inner bushing that can be installed inside the main body and has a gap between both ends of the main body and both ends of the inner bushing.
The outer bushing, which can be installed on the inner bushing and one end of which can protrude into the gap,
Provided is a piping connection structure including a cap that can be installed on the outside of the main body and the outer bushing and that can move the outer bushing into the gap.

The beneficial effects of the present invention are as follows. When used, the main body is fitted to the outside of the inner bushing, and the gap formed between the main body and the inner bushing after fitting is for attaching the pipe material. When installing, first pass the connection end of the pipe material waiting to be installed through the cap and the outer bushing in order, project it from the bottom end of the cap and the outer bushing, then project the connection end of the pipe material into the gap, and then insert the outer bushing into the gap. Then, the cap is fitted to the outer bushing and the main body, and finally the first protrusion of the main body and the bottom of the cap are clamped from the entire circumferential direction by a tool such as an engaging clamp, and the engaging clamp is pressed and tightened. This pushes the cap against the outer bushing, which pushes the outer bushing further into the gap, causing both the outer and inner bushings to press the tubing material, much like a pressed sandwich.

Since one pipe material can be connected to both ends of the device of the present invention, two pipes can be connected according to this device, which is simple and convenient, and the connection is close but strong. It is possible to prevent leakage.

In some embodiments, the first protrusion is an annular "work" shaped structure in which a notch is formed in the center of the first protrusion of the "work" shaped structure. Its beneficial effect is that the tool can be engaged in the notch and the size of the notch can be large or small to meet the requirements of clamping the first protrusion and cap, depending on the actual situation. Is decided and becomes more flexible.

In some embodiments, the outer walls at both ends of the inner bushing are grooved and the inner bushing is a hollow tubular structure. Its beneficial effect is that in the process of continuously pushing the outer bushing into the gap, the outer bushing continuously clamps the tubing, which is generally a metal material and is ductile, thus lining the inner wall of the tubing. It can be pushed into the groove on the bushing to firmly engage the pipe material and the inner bushing, and the pipe connection according to the present invention becomes stronger. In addition, the inner bushing uses inward grooves instead of outward protrusions, and the main reason is that the entire surface of the inner bushing can be easily flattened for easy bonding with the inner wall of the pipe material. Is to do. The inner bushing is hollow so as to communicate the pipe materials waiting to be connected at both ends.

In some embodiments, the grooves are annular in shape coaxial with the inner bushing and the grooves are plural. Its beneficial effect is that, on the one hand, it is easy to process and produce, and on the other hand, the plurality of grooves can tightly tighten the fit between the pipe material and the inner bushing and further prevent leakage.

In some embodiments, an inward second protrusion is provided on the inside of the body, a third protrusion is provided on the outside of the inner bushing, and the third protrusion corresponds to the second protrusion. Both sides of the second protrusion and both sides of the third protrusion are flush with each other to form the bottom surface of the gap. The beneficial effect is that the second protrusion is tightly fitted corresponding to the third protrusion, and the bottom surface of the gap facilitates contact with the end of the pipe and supports the end of the pipe. It is specifically used to further improve the airtightness of the contact portion between the pipe material and the inner bushing and the main body.

In some embodiments, the end of the inner bushing is provided with a first slope, which gradually reduces its outer diameter as the inner bushing extends towards the end. The beneficial effect is that the first slope is provided so that the end of the inner bushing becomes smaller and easier to insert the inner bushing end into the waiting tube.

In some embodiments, the outer side of the outer bushing is provided with a second slope, the second slope is annular, and the second slope gradually increases the diameter of the outer surface from the middle to the end of the outer bushing. The second slope is sequentially composed of a plurality of annular surfaces. The beneficial effect is that a second slope is provided so that the outer bushing can be easily inserted into the gap to press the tubing that needs to be connected.

In some embodiments, an inner surface and a third slope are provided inside the end of the body, and the angle α formed by the inner surface and the cross section of the body is 90 ° <α <100 °. The slope of 3 is located at the end of the inner surface, and the third slope gradually increases the inner diameter as the inner surface extends toward the end of the main body. The beneficial effect is that the third slope also allows the outer bushing to be easily pushed into the gap, and the third slope further mates with the second slope to facilitate the insertion of the outer bushing. Is what you can do. The installation of the α angle, on the one hand, facilitates the advancement of the outer bushing, and on the other hand, the outer bushing protrudes into the narrowing gap, so that the pipe material is further clamped to strengthen the connection of the pipe material. Is what you can do.

In some embodiments, one end of the outer bushing is provided with a first plane, the inside of one end of the cap is provided with a second plane, and the first plane abuts the second plane. The beneficial effect is that the contact area between the first plane and the second plane is larger, so the receiving area of the cap and the outer bushing is larger, the receiving force of both is more uniform and stable, and the cap is on the outer side. It is easy to move the bushing forward.

In some embodiments, a fourth slope is provided inside the mouth of the cap, which gradually increases the inner diameter of the cap as it extends toward the end of the cap. The beneficial effect is that the cap is easily installed at the end of the outer bushing and the body due to the provision of the fourth slope.

It is an exploded view of the pipe connection structure which concerns on one Embodiment of this invention. It is sectional drawing when the pipe connection structure shown in FIG. 1 is used. It is a structural schematic diagram of the main body of the pipe connection structure shown in FIG. It is a structural schematic diagram of the inner bushing of the pipe connection structure shown in FIG. It is a structural schematic diagram of the outer bushing of the pipe connection structure shown in FIG. It is a structural schematic diagram of the cap of the pipe connection structure shown in FIG.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

1 to 6 schematically show a pipe connection structure according to an embodiment of the present invention. As shown in the figure, the device includes a main body 1, an inner bushing 2, an outer bushing 3, and a cap 4. The main body 1, the inner bushing 2, the outer bushing 3 and the cap 4 all have a hollow tubular or annular structure.

Among them, as shown in FIG. 3, both ends of the main body 1 have a symmetrical structure, and a first protrusion 11 is provided outside the central position.

As shown in FIG. 4, the inner bushing 2 can be installed inside the main body 1, and after both are fitted and installed, between both ends of the main body 1 and both ends of the inner bushing 2. , There is a gap 5 for attaching and inserting the pipe material 6 waiting to be connected.

As shown in FIG. 5, there are two outer bushings 3, the two outer bushings 3 can be installed on both ends of the inner bushing 2, and one end of the outer bushing 3 projects into the gap 5. Can be done.

As shown in FIG. 6, there are two caps 4 corresponding to the outer bushing 3, the cap 4 can be installed on the outside of the main body 1 and the outer bushing 3, and the cap 4 mainly has the outer bushing 3. It is for moving into the gap 5.

As shown in FIG. 2, when connecting the pipe material 6 with the device of the present invention, the main body 1 is fitted to the outside of the inner bushing 2, the main body 1 and the inner bushing 2 are closely fitted, and then both ends of both ends. One gap 5 for attaching the pipe material 6 is formed between them. When attaching, first, the connection end of the pipe material 6 waiting to be attached is sequentially passed through the cap 4 and the outer bushing 3, and the connection end is projected from the hole at the bottom end of the cap 4 and the outer bushing 3. After that, the connecting end of the pipe material 6 is projected into the gap 5, the outer bushing 3 is pushed into the gap 5, and the cap 4 is further fitted into the outer bushing 3 and the main body 1. Finally, a tool such as an engagement clamp clamps the first protrusion 11 of the main body 1 and the bottom of the cap 4 from the entire circumferential direction, presses the engagement clamp, and presses the cap 4 against the outer bushing 3 by tightening. As a result, the cap 4 can be advanced in the direction of the main body 1, the outer bushing 3 can be advanced, and the cap 4 can be further pushed into the gap 5. At this time, the outer bushing 3 continuously advances into the gap 5, and the outer bushing 3 and the inner bushing 2 both press the pipe material 6 to firmly fix the pipe material 6 like a pressed sandwich.

Since one pipe material 6 can be connected to both ends of the device of the present invention, two pipe materials 6 can be connected according to this device, which is simple and convenient, and the connection is close. However, it is strong and can prevent leakage.

As shown in FIG. 3, in order for the tool to engage and clamp the main body 1 and the cap 4, the first protrusion 11 has an annular "work" -shaped structure, and the first protrusion of the "work" -shaped structure. A notch 12 is formed in the center of 11. At this time, the tool is notched so that one end can be engaged in the notch 12 and the other end clamps the bottom of the cap 4 to meet the requirements for clamping the first protrusion 11 and the cap 4. The size of the twelve may be large or small, which is determined according to the actual situation, and the "work" -shaped structure facilitates pinching in two directions, and the pipe members 6 at both ends are fixed and connected. , Become more flexible.

As shown in FIG. 4, grooves 21 are provided on the outer walls at both ends of the inner bushing 2, and in the process of continuously pushing the outer bushing 3 into the gap 5, the outer bushing 3 continuously clamps the pipe material 6. The pipe material 6 is generally a metal material, for example, copper, stainless steel pipe, etc., and has ductility. Therefore, the inner wall of the pipe material 6 is pushed and deformed and pushed into the groove 21 of the inner bushing 2, and the pipe material 6 and the inner bushing are pushed. 2 can be firmly engaged, and the piping connection according to the present invention becomes stronger. Further, the inner bushing 2 employs an inward groove 21 instead of an outward protrusion, and the main reason is that the entire surface of the inner bushing 2 is easily flattened and the pipe material 6 can be easily inserted. This is not only to facilitate close bonding between the inner bushing 2 and the inner wall of the pipe material 6.

In order to facilitate processing and strengthen the product, the grooves 21 are installed in an annular shape coaxial with the inner bushing 2, and the grooves 21 are plural. This, on the one hand, facilitates annular processing and production, and on the other hand, the plurality of grooves 21 makes the contact surface between the tube member 6 and the inner bushing 2 wider and the fitting closer and stronger. Can be done.

The inner bushing 2 has a hollow tubular structure, and the inner bushing 2 is hollow so as to communicate the pipe materials 6 waiting for connection at both ends.

In order to fit the main body 1 and the inner bushing 2 more closely, an inward second protrusion 13 is provided on the inside of the main body 1, and a third protrusion 22 is provided on the outer side of the inner bushing 2. The third protrusion 22 corresponds to the second protrusion 13, and both sides of the second protrusion 13 and both sides of the third protrusion 22 are flush with each other to form the bottom surface 51 of the gap 5. As described above, the second protrusion 13 is closely fitted corresponding to the third protrusion 22, the main body 1 and the inner bushing 2 are firmly fitted, and the bottom surface 51 of the gap 5 is the pipe material 6. It is used to facilitate contact with the end portion of the pipe material 6 and support the end portion of the pipe material 6, and further improves the airtightness of the contact portion between the pipe material 6 and the inner bushing 2 and the main body 1.

Further, a first slope 23 is provided at both ends of the inner bushing 2, and the radius of the first slope 23 is gradually reduced as the inner bushing 2 extends toward the end. As a result, since the first slope 23 is provided and the ends of the inner bushing 2 are truncated cones, the ends of both ends of the inner bushing 2 gradually become smaller, and when the pipe material 6 is connected, the inner bushing 2 The end portion is easily inserted into the pipe material 6 waiting to be connected.

As shown in FIG. 5, in order to easily insert the outer bushing 3 into the gap 5 and advance it, a second slope 31 is provided on the outside of the outer bushing 3, and the second slope 31 is annular. The second slope 31 gradually reduces the diameter of the outer surface from the middle to the end of the outer bushing 3, whereby the outer bushing 3 can be easily inserted into the gap 5 to connect the pipe material 6 that needs to be connected. Press. Since the second slope 31 is sequentially composed of a plurality of annular surfaces and resembles a step shape, the outer bushing 3 can be pushed step by step and pushed into the gap 5 to clamp the pipe material 6.

As shown in FIG. 3, an inner side surface 14 and a third slope 15 are provided inside the end portion of the main body 1, and the angle α formed by the inner side surface 14 and the cross section of the main body 1 is 90 ° <α <. At 100 °, the third slope 15 is located at the end of the inner surface 14, and the third slope 15 gradually increases in inner diameter as the inner surface 14 extends toward the end of the body 1. The third slope 15 is also for easily pushing the outer bushing 3 into the gap 5, and the third slope 15 is further fitted with the second slope 31 to make the insertion of the outer bushing 3 easier. be able to. The installation of the angle of α facilitates the advance of the outer bushing 3 on the one hand, and projects into the gap 5 where the outer bushing 3 gradually narrows on the other hand, so that the pipe material 6 is clamped to strengthen the connection of the pipe material 6. Can be.

As shown in FIGS. 5 and 6, a first plane 32 is provided at one end of the outer bushing 3, a second plane 41 is provided inside one end of the cap 4, and the first plane 32 is a second. It abuts on the plane 41 of 2. As a result, the contact area between the first flat surface 32 and the second flat surface 41 becomes large, so that the receiving area of the cap 4 and the outer bushing 3 becomes large, and the receiving forces of both become more uniform and stable, and the cap 4 Can easily advance the outer bushing 3.

As shown in FIG. 5, in order to increase the pressure resistance of the outer bushing 3, a bending portion 33 is further provided at the bottom of the outer bushing 3, and when the cap 4 advances the outer bushing 3, the bending portion 33 Greatly improves the pressure resistance of the outer bushing.

As shown in FIG. 6, a fourth slope 42 is provided inside the mouth of the cap 4, and the fourth slope 42 gradually increases the inner diameter of the cap 4 toward the end of the cap 4. To do. As a result, since the fourth slope 42 is provided, the mouth portion of the cap 4 is enlarged, and the cap 4 is installed at the end portion between the outer bushing 3 and the main body 1.

The above are only some embodiments of the present invention. For those skilled in the art, some modifications and improvements can be made without departing from the concept of the present invention, all of which are included in the scope of protection of the present invention.

Claims (10)

It has a hollow cyclic structure and
A main body (1) provided with a first protrusion (11) on the outside,
The inner bushing (2) can be installed inside the main body (1), and a gap (5) is provided between both ends of the main body (1) and both ends of the inner bushing (2). Inner bushing (2) and
An outer bushing (3) that can be installed in the inner bushing (2) and one end of which can protrude into the gap (5).
It is characterized by having a cap (4) that can be installed outside the main body (1) and the outer bushing (3) and can move the outer bushing (3) into the gap (5). Piping connection structure. The first protrusion (11) has an annular "work" -shaped structure, and a notch (12) is formed in the center of the first protrusion (11) of the "work" shape. Item 1. The pipe connection structure according to item 1. The pipe connection structure according to claim 1, wherein grooves (21) are provided on the outer walls at both ends of the inner bushing (2), and the inner bushing (2) has a hollow tubular structure. The pipe connection structure according to claim 3, wherein the groove (21) has an annular shape coaxial with the inner bushing (2), and the number of the grooves (21) is plural. A second protrusion (13) facing inward is provided on the inside of the main body (1), and a third protrusion (22) is provided on the outside of the inner bushing (2). 22) corresponds to the second protrusion (13), and both sides of the second protrusion (13) and both sides of the third protrusion (22) are flush with each other and the bottom surface (51) of the gap (5). The pipe connection structure according to claim 1, wherein the pipe connection structure is formed. A first slope (23) is provided at the end of the inner bushing (2), and the outer diameter of the first slope (23) gradually decreases as the inner bushing (2) extends toward the end. The pipe connection structure according to claim 1, wherein the pipe connection structure is provided. A second slope (31) that is annular is provided on the outside of the outer bushing (3), and the second slope (31) is the diameter of the outer surface from the middle to the end of the outer bushing (3). The pipe connection structure according to claim 1, wherein the second slope (31) is sequentially composed of a plurality of annular surfaces. An inner side surface (14) and a third slope (15) are provided inside the end portion of the main body (1), and the angle α formed by the inner side surface (14) and the cross section of the main body (1) is , 90 ° <α <100 °, the third slope (15) is located at the end of the inner surface (14), and the third slope (15) has the inner surface (14) as the main body (14). The pipe connection structure according to claim 1, wherein the inner diameter is gradually increased as it extends toward the end of 1). A first plane (32) is provided at one end of the outer bushing (3), a second plane (41) is provided inside one end of the cap (4), and the first plane (32) is provided. ) Is the pipe connection structure according to claim 1, wherein the structure abuts on the second plane (41). A fourth slope (42) is provided inside the mouth of the cap (4), and the fourth slope (42) directs the inner diameter of the cap (4) toward the end of the cap (4). The pipe connection structure according to claim 1, wherein the pipe connection structure is gradually increased as it extends.