PRESS-FITTING CONNECTION STRUCTURE FOR PIPELINE AND REFRIGERATION DEVICE

Abstract

A press-fitting connection structure for pipeline defines a first mounting groove for accommodating a retaining ring and a second mounting groove for accommodating a sealing ring, making the retaining ring and sealing ring be respectively mounted in different grooves and not easily to move. The first and second mounting grooves are spaced apart, so that the retaining ring will not come into contact with and scratch the sealing ring when the press-fitting connection structure for pipeline is subjected to the force of a press-fitting tool, thereby eliminating a closing ring originally used to protect the sealing ring, which makes assembly be more labor-saving and efficient. By means of setting a plurality of retaining teeth on the inner surface of the retaining ring, the retaining teeth can be more easily buried into the outer wall of the pipe through tip ends thereof, improving the tensile performance of the retaining ring.

Claims

1. A press-fitting connection structure for pipeline, comprising a tubular-shaped connecting body (1) for connecting pipes (4), wherein a first mounting groove (11) and a second mounting groove (12) are defined in an inner surface of the connecting body (1), arranged in sequence along an axial direction and spaced from each other, a sealing ring (2) is mounted in the first mounting groove (11), a retaining ring (3) is mounted in the second mounting groove (12), an axial position of the retaining ring (3) is limited by the second mounting groove (12), a plurality of retaining teeth (31) is provided on an inner surface of the retaining ring (3), and each of the plurality of retaining teeth (31) comprising a tip end (311) arranged toward an inner side, during press-fitting, the connecting body (1) is mounted around and sealed with the pipe (4) through the sealing ring (2), and the retaining teeth (31) of the retaining ring (3) are buried into a wall of the pipe (4) through tip ends (311).

2. The press-fitting connection structure for pipeline according to claim 1, wherein the second mounting groove (12) is set close to an end portion of the connecting body (1), and located between the end portion of the connecting body (1) and the first mounting groove (11).

3. The press-fitting connection structure for pipeline according to claim 2, wherein a protective ring (5) is mounted at the end portion of the connecting body (1) for covering the retaining teeth (31) laterally.

4. The press-fitting connection structure for pipeline according to claim 3, wherein an inner diameter of the protective ring (5) is smaller than an inner diameter of the retaining ring (3).

5. The press-fitting connection structure for pipeline according to claim 1, wherein the plurality of retaining teeth (31) are continuously and uniformly distributed along a circumferential direction of the retaining ring (3).

6. The press-fitting connection structure for pipeline according to claim 5, wherein the tip end (311) of the retaining tooth (31) extends along an axial direction of the retaining ring (3).

7. The press-fitting connection structure for pipeline according to claim 5, wherein a cutout (32) is defined in the retaining ring (3), making the retaining ring (3) be C-shaped.

8. The press-fitting connection structure for pipeline according to claim 1, wherein an enlarged opening (13) is defined at an end portion of the connecting body (1), and the second mounting groove (12) is located at the enlarged opening (13).

9. The press-fitting connection structure for pipeline according to claim 1, wherein an annular protrusion (14) is provided inside the connecting body (1) for controlling a length of the pipe (4) inserted into the connecting body (1).

10. A refrigeration device, comprising a refrigeration pipeline, wherein the refrigeration pipeline comprises a press-fitting connection structure for pipeline as defined in claim 1.

11. A refrigeration device, comprising a refrigeration pipeline, wherein the refrigeration pipeline comprises a press-fitting connection structure for pipeline as defined in claim 2.

12. A refrigeration device, comprising a refrigeration pipeline, wherein the refrigeration pipeline comprises a press-fitting connection structure for pipeline as defined in claim 3.

13. A refrigeration device, comprising a refrigeration pipeline, wherein the refrigeration pipeline comprises a press-fitting connection structure for pipeline as defined in claim 4.

14. A refrigeration device, comprising a refrigeration pipeline, wherein the refrigeration pipeline comprises a press-fitting connection structure for pipeline as defined in claim 5.

15. A refrigeration device, comprising a refrigeration pipeline, wherein the refrigeration pipeline comprises a press-fitting connection structure for pipeline as defined in claim 6.

16. A refrigeration device, comprising a refrigeration pipeline, wherein the refrigeration pipeline comprises a press-fitting connection structure for pipeline as defined in claim 7.

17. A refrigeration device, comprising a refrigeration pipeline, wherein the refrigeration pipeline comprises a press-fitting connection structure for pipeline as defined in claim 8.

18. A refrigeration device, comprising a refrigeration pipeline, wherein the refrigeration pipeline comprises a press-fitting connection structure for pipeline as defined in claim 9.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0028] FIG. 1 is a schematic, structural view of a press-fitting connection structure for pipeline of this disclosure.

[0029] FIG. 2 is a schematic, cross-sectional view of a press-fitting connection structure for pipeline of this disclosure.

[0030] FIG. 3 is a schematic, partially enlarged view of part A of FIG. 2 of this disclosure.

[0031] FIG. 4 is a schematic, cross-sectional view of a connecting body of this disclosure.

[0032] FIG. 5 is a schematic, structural view of a retaining ring of this disclosure.

[0033] FIG. 6 is schematic, cross-sectional view of the installation of a pipe in the press-fitting connection structure for pipeline of this disclosure.

[0034] In the figures: [0035] 1, connecting body; [0036] 11, first mounting groove; [0037] 12, second mounting groove; [0038] 13, enlarged opening; [0039] 14, annular protrusion; [0040] 2, sealing ring; [0041] 3, retaining ring; [0042] 31, retaining tooth; [0043] 311, tip end; [0044] 32, cutout; [0045] 4, pipe; and [0046] 5, protective ring.

DESCRIPTION OF THE EMBODIMENTS

[0047] For better understanding the present application, more detailed description of various aspects of this application will be provided with reference to the append drawings. It should be understood that these detailed description are only description of exemplary embodiments of the present application, and do not limit the scope of the present application in any way. In the whole specification, the same reference numbers refer to the same components.

[0048] In the attached drawings, for the sake of description, the thickness, size, and shape of the object have been slightly exaggerated. The attached drawings are only an example and not strictly drawn to scale.

[0049] It should also be understood that the terms includes/include/including, comprises/comprise/comprising, has/have/having, used in this specification indicate the existence of the described features, structure, step, operation, component, and/or member, but do not exclude the existence or addition of one or more other features, structure, step, operation, component, member, and/or their combination.

Embodiment 1

[0050] As shown in FIG. 1 to FIG. 6, this application discloses a press-fitting connection structure for pipeline and a refrigeration device, which includes a tubular-shaped connecting body 1. The press-fitting connection structure for pipeline may be a press-fitting joint or a pipe clamp, etc. The connecting body 1 is mounted around and connected to a pipe 4 through an end thereof, and a sealing ring 2 and a retaining ring 3 are set in the connecting body 1. The connecting body 1 is mounted around and sealed with an outer wall of the pipe 4 through the sealing ring 2. An inner surface of the retaining ring 3 is provided with a plurality of retaining teeth 31, and the pipe 4 is fixed by the retaining ring 3 through burying of the retaining teeth 31 into the outer wall of the pipe 4. When a press-fitting tool acts on the connecting body 1, the scaling ring 2 is mounted around and sealed with the outer wall of the pipe 4, and scaling connection between the pipes 4 is achieved by the connecting body 1, so as to prevent a gap between the pipe 4 and the connecting body 1. Each of the retaining teeth 31 includes a tip end 311 arranged toward an inner side. During press-fitting, the retaining ring 3 clamps the pipe 4 tightly through burying of the tip ends 311 of the retaining teeth 31 into the outer wall of the pipe 4, so as to prevent the pipe 4 from slipping and detaching from the connecting body 1, improving the tensile performance.

[0051] As shown in FIG. 2 and FIG. 4, an inner wall of the connecting body 1 defines a first mounting groove 11 and a second mounting groove 12 which are arranged in sequence along the axial direction and spaced from each other. The sealing ring 2 is mounted in the first mounting groove 11, and the retaining ring 3 is mounted in the second mounting groove 12. The second mounting groove 12 limits an axial position of the retaining ring 3. The first mounting groove 11 and the second mounting groove 12 make the sealing ring 2 and the retaining ring 3 be respectively arranged in different grooves, and thus the sealing ring 2 and the retaining ring 3 are not easily to move when subjected to force. The first mounting groove 11 and the second mounting groove 12 are spaced apart, so that the sealing ring 2 and the retaining ring 3 cannot come into contact due to the obstruction of their respective mounting grooves when the sealing ring 2 and the retaining ring 3 deform due to the force of the press-fitting tool, which prevents the sealing ring 2 from being scratched by the retaining ring 3. Therefore, there is no need to install a closing ring between the sealing ring 2 and the retaining ring 3 for protecting the scaling ring 2, which is different from the conventional three ring-bodies and one groove structure constructed by the retaining ring, closing ring and scaling ring. Further, the retaining ring 3 is mounted in the second mounting groove 12, and there is no need to from a flange at the end portion of the connecting body 1 for limiting a position of the retaining ring 3.

[0052] As shown in FIG. 4, the second mounting groove 12 is set close to the end portion of the connecting body 1, and is located between the end portion of the connecting body 1 and the first mounting groove 11. The retaining ring 3 is more outward than the sealing ring 2, and the sealing ring 2 is located at the inner side of the retaining ring 3, so that it is not easy to affect the scaling of the sealing ring 2 to the connecting body 1 when the retaining ring 3 is tightly clamped with the outer wall of the connecting body 1, and the fluid is blocked by the sealing ring 2 and cannot contact the retaining ring 3 when it passes through an interior of the connecting body 1, thereby prolonging the service life of the retaining ring 2. The first mounting groove 11 is set close to the second mounting groove 12, so that the press-fitting tool can act on the first mounting groove 11 and the second mounting groove 12 synchronously. This press-fitting connection structure for pipeline may adapt to common press-fitting tools on the market, reducing the user's usage cost.

[0053] More specifically, when the common press-fitting tool is applied to the press-fitting connection structure for pipeline, both the sealing ring 2 and the retaining ring 3 are subjected to the press-fitting force and tightly hold the outer wall of the pipe 4. The press-fitting connection structure for pipeline is subjected to force and deformation are generated at two sides of the first mounting groove 11 to form a hexagonal structure, with one side being the location of the second mounting groove 12. This end is fixedly connected to the pipe 4 through two hexagonal structures, which is stable in structure and the pipe 4 is difficult to slide. Further, two ends of the press-fitting connection structure for pipeline each are provided with a first mounting groove 11 and a second mounting groove 12, and thus the two ends can connect and fix the pipes 4, which is stable in structure. It should be noted that the press-fitting connection structure for pipeline may be provided with multiple first mounting grooves 11 and one second mounting groove 12, and the number of the first mounting groove(s) 11 and second mounting groove(s) 12 is not limited in this application.

[0054] As shown in FIG. 2, a protective ring 5 is mounted at the end portion of the connecting body 1, for covering the retaining teeth 31 laterally. Inserting of the pipe 4 into the connecting body 1 needs to pass through the retaining ring 3. When the press-fitting tool is not used, an inner diameter at a pipe mouth of the connecting body 1 is greater than the outer diameter of the pipe 4, and thus an inserting angle of the pipe 4 is prone to deviation, and thus the sharp corner of the retaining tooth 31 on the inner surface of the retaining ring 3 is prone to scratching the outer wall of the pipe 4. That is, the retaining teeth 31 and the outer wall of the pipe 4 are prone to scratching. By means of setting a protective ring 5 at the end portion of the connecting body 1, the pipe 4 is inserted into the connecting body 1 under the guiding of the protective ring 5, so as to avoid scratching of the outer wall of the pipe 4 by the sharp corner of the retaining tooth 31, and correct the inserting angle of the pipe 4, making the pipe 4 be difficult to be scratched by the sharp corner of the retaining teeth 31 when it is inserted, thereby preventing the pipe 4 from leaking.

[0055] As shown in FIG. 3, more specifically, an inner diameter of the protective ring 5 is smaller than that of the retaining ring 3. The protective ring 5 is mounted at the end portion of the connecting body 1, wherein a portion of the protective ring 5 is located inside the connecting body 1 for guiding the installation of the pipe 4, and thus an inner diameter of this portion of the protective ring 5 is taken as the inner diameter of the entire protective ring 5. An inner diameter of the retaining ring 3 depends on a protruding height of the retaining tooth on its inner surface. By means of setting the inner diameter of protective ring 5 to be smaller than that of the retaining ring 3, under the action of the protective ring 5, there is a gap between the pipe 4 and outer surfaces of the retaining teeth 31 during inserting of the pipe 4, and the sharp corners of the retaining teeth 31 is blocked to protect the pipe 4 from being scratched by the retaining teeth 31.

[0056] As shown in FIG. 5, the plurality of retaining teeth 31 is continuously and uniformly distributed along a circumferential direction of the retaining ring 3. In this way, there is a full circle of retaining teeth 31 distributed on the inner surface of the retaining ring 3. The plurality of retaining teeth 31 is distributed on the inner surface of the retaining ring 3 closely, and a space between adjacent retaining teeth 31 is small. When the pipe 4 is inserted into and the press-fitting tool acts on the press-fitting connection structure for pipeline, the retaining ring 3 shrinks under the force of the press-fitting tool, the plurality of teeth 31 on the inner surface of the retaining ring 3 are buried into the outer wall of the pipe 4 under force to achieve fixation. A holding force of the plurality of teeth 31 which is evenly distributed along the circumferential direction is relatively large, improving the tensile performance of the retaining ring 3. Further, the retaining ring 3 is clamped onto the pipe 4 through the full circle of retaining teeth 31, and thus a thickness of the retaining ring 3 can be reduced, thereby being well applied to the pipe 4 with small diameter.

[0057] As shown in FIG. 5, the retaining tooth 31 is an inverted, V-shaped protrusion. By means of setting the retaining tooth 31 to be inverted, V-shaped, a top of the inverted, V-shaped retaining tooth 31 is configured as a tip end 311. When subjected to the force of the press-fitting tool, the tip end 311 at the top can be buried into the outer wall of the pipe 4, resulting in better clamping effect and better tensile performance. In addition, the inverted, V-shaped protrusion is simple in structure, and a difficulty of processing and production is low.

[0058] As shown in FIG. 5, the tip end 311 of the retaining tooth 31 extends along the axial direction of the retaining ring 3, and the retaining teeth 31 are distributed circumferentially on the inner surface of the retaining ring 3 as a full circle. A length direction of the tip end 311 of the retaining teeth 31 is parallel to the axial direction of the retaining ring 3, thus the inner surface of the retaining ring 3 can accommodate more retaining teeth 31, improving the tensile performance of the retaining ring 3.

[0059] As shown in FIG. 5, the retaining ring 3 is provided with a cutout 32, which makes the retaining ring 3 be C-shaped. The retaining ring 3 is installed inside the connecting body 1, which is used to connect and fix the pipe 4. A head portion of the press-fitting connection structure for pipeline is tubular-shaped, setting the cutout 32 on the retaining ring 3 can make it easier and faster to be mounted into the second mounting groove 12, and the retaining ring has a certain amount of movement for the cutout 32 when it is subjected to the force of the press-fitting tool.

[0060] As shown in FIG. 1 and FIG. 2, the end portion of the connecting body 1 is provided with an enlarged opening 13, and the second mounting groove 12 is located at the enlarged opening 13. The pipe 4 is inserted into the connecting body 1 through the end portion of the connecting body 1. If a difference in diameter between the pipe 4 and the end portion of the connecting body 1 is small, it will be difficult to assemble. In this technical solution, considering the difficulty of assembly, an enlarged opening 13 is set at the end portion of the connecting body I to enlarge the diameter of the end portion of the connecting body 1, making it easier and faster to insert the pipe 4 into the connecting body 1.

[0061] More specifically, due to the thickness of the retaining ring 3 is smaller, the second mounting groove 12 located at the enlarged opening 13 is actually a shallow groove, which can be formed on the connecting body 1 by machining. The second mounting groove 12 is easy to process, and the installation of the retaining ring 3 is fast and convenient.

[0062] As shown in FIG. 6, an annular protrusion 14 is formed inside the connecting body 1, for controlling a length of the pipe 4 inserted into the connecting body 1. Two pipes 4 are respectively inserted into two ends of the connecting body 1 to achieve connection. After inserting of the pipe 4 into the connecting body 1, an end portion of the pipe 4 abuts against the annular protrusion 14 to achieve installation limit, preventing one pipe 4 from being inserted too long and affecting the installation of the other pipe 4. The annular protrusion 14 is simple in structure and convenient to produce.

Embodiment 2

[0063] Based on Example 1, this embodiment provides a refrigeration device, which may be an air conditioner. The refrigeration device includes a refrigeration pipeline, which includes a plurality of copper pipes. The plurality of copper pipes are connected and communicated with each other through the press-fitting connection structure for pipeline described in Example 1. For the press-fitting connection structure for pipeline, by means of setting a retaining ring 3 with a plurality of retaining teeth 31, it uses the retaining teeth 31 of the retaining ring 3 to clamp the pipe 4 tightly to improve its tensile performance. The retaining ring 3 itself has a smaller thickness and will not affect the diameter of the press-fitting connection structure for pipeline. The retaining ring 3 and the press-fitting connection structure for pipeline are produced separately, reducing the difficulty of the production process and lowering production costs.

[0064] The present disclosure describes a press-fitting connection structure for pipeline and a refrigeration device, wherein the press-fitting connection structure for pipeline defines a first mounting groove 11 for accommodating a sealing ring 2 and a second mounting groove 12 for accommodating a retaining ring 3, so that the sealing ring 2 and the retaining ring 3 can be respectively mounted in different grooves and are not easily to move. The first mounting groove 11 and the second mounting groove 12 are spaced apart, so that the retaining ring 3 will not come into contact with the sealing ring 2 and scratch the sealing ring 2 when the press-fitting connection structure for pipeline is subjected to the force of the press-fitting tool, thereby eliminating the closing ring originally used to protect the sealing ring 2, which makes assembly be more labor-saving and efficient. By means of setting a plurality of retaining teeth 31 on the inner surface of the retaining ring 3, the retaining teeth 31 can be more easily buried into the outer wall of the pipe 4 through the tip ends 311 thereof, improving the tensile performance of the retaining ring 3. The retaining ring 3 can clamp the pipe 4 tightly through the full circle of teeth 31, and thus a thickness of the retaining ring 3 can be reduced, thereby reducing production costs and processing difficulties, which can be well applied to the pipes 4 of small diameter, and of course, can be also applied to large pipes 4.

[0065] This application is not limited to the above preferred embodiments, anyone can derive various other forms of products under the inspiration of this application, but regardless of any changes in its shape or structure, any technical solution that is the same or similar to this application falls within the protection scope of this application.