Pipe connecting piece and connecting pipe
By connecting the first and second mating parts to the pipe and locking them with the locking part, the problem of complex operation and insufficient reliability in the existing copper pipe connection technology is solved, realizing quick connection and disassembly, and adapting to the needs of pipes with different materials and complex layouts.
Patent Information
- Application Number
- CN202520526220.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-24
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-03-24
AI Technical Summary
Existing copper pipe connection technology suffers from problems such as complex operation, heat-affected zone issues, safety hazards, high processing precision requirements, low installation efficiency, insufficient reliability, and poor flexibility. It is difficult to achieve rapid connection and disassembly, and it is also difficult to adapt to different materials and complex pipe layouts.
The first and second mating parts are used to connect with the pipe and are locked by the locking part, which realizes the quick connection and disassembly of the two pipe sections. It can compensate for displacement caused by different characteristics such as thermal expansion and contraction, enhance connection reliability, and adapt to different materials and complex layouts.
It enables rapid connection and disassembly of two pipe sections, reducing construction difficulty and cost, enhancing connection reliability, adapting to different materials and complex layouts, and facilitating maintenance and repair.
Smart Images
Figure CN223782295U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipe connection technology, and more specifically, to a pipe connector and a connecting pipe. Background Technology
[0002] Copper pipes are widely used in refrigeration, HVAC, water supply and drainage, and industrial piping due to their excellent thermal conductivity, corrosion resistance, and mechanical properties. With the increasing demands of modern industry for higher efficiency, reliability, and economy in piping systems, copper pipe connection technology has undergone several innovations. Traditional connection methods mainly include welding, threaded connections, and crimping, each with its own technical characteristics and limitations.
[0003] Common methods for welding copper pipes include brazing and fusion welding. Brazing achieves a connection by filling with a low-melting-point solder (such as silver-based or copper-based solder), requiring the base material to be heated to the solder's melting temperature. Although welded joints offer high strength and good sealing, they have significant drawbacks:
[0004] 1. Complex operation: It requires professional welders, has high skill requirements, and requires equipment such as gas cylinders and welding guns;
[0005] 2. Heat-affected zone issues: High temperatures can easily cause copper tubes to anneal, leading to a decrease in the material's mechanical properties and even deformation;
[0006] 3. Safety hazards: Open flame operations pose a fire risk, and welding fumes are harmful to the environment and human health;
[0007] 4. Limited application scenarios: It cannot be used to connect materials that are not resistant to high temperatures (such as plastic corrugated pipes), and it is difficult to implement in confined spaces or flammable and explosive environments.
[0008] Threaded connections achieve pipe fastening through the engagement of internal and external threads, typically reinforced with sealant or PTFE tape to enhance sealing. Their advantage lies in their detachability, but they also present the following problems:
[0009] 1. High machining accuracy requirements: Threads require precision machining, and improper tolerance control can easily lead to leakage;
[0010] 2. Low installation efficiency: It requires tightening the threads one turn at a time, which is time-consuming and labor-intensive, and cannot meet the needs of rapid installation;
[0011] 3. Insufficient reliability: Leakage is prone to occur under dynamic loads such as vibration and thermal cycling, affecting the system's lifespan;
[0012] 4. Poor flexibility: It is difficult to adapt to complex pipeline layouts or working conditions requiring frequent adjustments. Utility Model Content
[0013] The purpose of this utility model is to overcome the shortcomings of the existing technology in terms of high difficulty in pipe connection and welding, and to propose a pipe connector and connecting pipe that can realize the rapid connection and disassembly between two pipes, with strong connection reliability, and can compensate for the displacement caused by the different characteristics of the two pipes due to thermal expansion and contraction, and effectively prevent the connection from loosening due to vibration or other external factors.
[0014] To achieve the above objectives, this solution provides a pipe connector comprising a first mating part, a second mating part, and a locking part. The first mating part and the second mating part each have a channel adapted to the pipe. One end of the first mating part is used to connect to a section of pipe, and one end of the second mating part is used to connect to another section of pipe. The other end of the first mating part is detachably connected to the other end of the second mating part. The locking part is connected at the connection between the first mating part and the second mating part to lock the first mating part and the second mating part in place.
[0015] In this technical solution, one section of pipe is first welded to one end of the first mating part, and then another section of pipe is welded to the other end of the second mating part. Subsequently, the other ends of the first and second mating parts are connected together. Finally, the first and second mating parts are locked together by the locking part, realizing the rapid connection of the two pipe sections. Using the first and second mating parts as intermediate connecting components can reduce the direct welding of the two pipe sections, which not only reduces costs and construction difficulty, but also enables the connection of two different pipe materials (such as copper pipe and plastic corrugated pipe). The locking part keeps the first and second mating parts in a stable state after connection. It can apply appropriate pressure to prevent the first and second mating parts from separating from each other, and to a certain extent compensate for the displacement caused by the different characteristics of the two pipe materials such as thermal expansion and contraction. It effectively prevents the connection from loosening due to vibration or other external factors, resulting in high connection reliability.
[0016] As a preferred embodiment, to enhance the sealing of the connection between the first mating part and the second mating part, the first mating part has an annular protrusion at one end near the second mating part, and the second mating part has a countersunk hole at one end near the first mating part. The protrusion is inserted into the countersunk hole, and the channel of the first mating part extends out of the protrusion, while the channel of the second mating part extends out of the countersunk hole. When the first and second mating parts are connected and locked by the locking part, the protrusion extends into the countersunk hole, ensuring that the first and second mating parts are aligned, thereby ensuring the concentricity of the two pipe sections.
[0017] As a preferred embodiment, in order to increase the sealing of the connection between the first mating part and the second mating part, the length of the protruding structure is adapted to the depth of the countersunk hole, a stepped surface is formed inside the countersunk hole, and the end face of the protruding structure abuts against the stepped surface. When the first mating part and the second mating part are connected and locked by the locking part, the protruding structure extends into the countersunk hole and the end face of the protruding part presses against the stepped surface of the countersunk hole.
[0018] As a preferred embodiment, in order to increase the sealing performance of the connection between the first mating part and the second mating part, at least one groove is formed on the outer periphery of the protruding structure, and a sealing ring is provided in the groove. When the first mating part and the second mating part are connected, the sealing ring undergoes elastic deformation due to the compression of the inner wall of the countersunk hole. The force generated during the recovery process causes the outer periphery of the sealing ring to press against the inner wall of the countersunk hole, thereby achieving a seal. Multiple evenly spaced grooves and sealing rings can also be provided on the protruding structure to increase the sealing performance.
[0019] As a preferred embodiment, the outer periphery of the first mating part and the second mating part are respectively provided with folded edges, the folded edges of the first mating part and the folded edges of the second mating part abut against each other, the folded edges of the first mating part and the folded edges of the second mating part are flush, the locking part is engaged with the folded edges of the first mating part and the folded edges of the second mating part, and the protrusion and the countersunk hole can ensure that the folded edges of the first mating part and the folded edges of the second mating part are aligned after they are engaged.
[0020] As a preferred embodiment, the locking part has an opening and a slot along its length. The slot is adapted to the folded edge of the first mating part and the folded edge of the second mating part. The outer periphery of the folded edge of the first mating part and the folded edge of the second mating part are engaged in the slot. The locking part is a special-shaped retaining spring. After the opening of the locking part is opened, its slot is aligned with the folded edge of the first mating part and the folded edge of the second mating part and engaged, thus realizing the installation of the locking part. The operation is simple and convenient. After disassembling the locking part, the two sections of pipe can be quickly disassembled, which is convenient for maintenance and repair.
[0021] As a preferred embodiment, the outer periphery of the locking part protrudes outward to form an equidistant petal-shaped structure. The width of the locking part is greater than the thickness of the locking part. By increasing the width of the locking part, its axial clamping strength at the connection between the first mating part and the second mating part can be increased, thus preventing the folded edges of the first mating part and the second mating part from loosening.
[0022] As a preferred embodiment, in order to ensure the reliable connection between the folded edges of the first mating part and the second mating part, the locking part is interference-fitted with the folded edges of the first mating part and the second mating part.
[0023] To achieve the above objectives, this solution provides a connecting pipe, including the aforementioned pipe connector, and further including two pipes. One pipe is welded to one end of the first mating part, and the other pipe is welded to one end of the second mating part. The other ends of the first mating part and the second mating part are mated together, and the locking part is fastened to the outer periphery of the first and second mating parts.
[0024] As a preferred embodiment, the pipe is a copper pipe or a plastic corrugated pipe, and the pipe connector can connect pipes of different materials, such as two pipes that are both copper pipes or two pipes that are both plastic corrugated pipes; or one pipe that is copper pipe and the other pipe that is plastic corrugated pipe.
[0025] Compared with the prior art, the beneficial effects of this utility model are:
[0026] 1. This utility model connects two pipe sections to a first mating part and a second mating part respectively, and then locks the first mating part and the second mating part with a locking part, thereby realizing the connection of the two pipe sections. The connection of the two pipe sections can be realized quickly without high-temperature welding. Moreover, the locking part can be used to lock the two pipe sections quickly, which is convenient for pipe maintenance and repair.
[0027] 2. This utility model can connect two pipes of different materials, with low processing difficulty and strong connection reliability.
[0028] 3. Connecting two pipe sections using pipe fittings allows for easy adjustment of the connection direction, making it suitable for different pipe layouts and installation requirements. Attached Figure Description
[0029] Figure 1 This is a structural schematic diagram of the pipe connector of this utility model;
[0030] Figure 2 yes Figure 1 An explosion diagram;
[0031] Figure 3 This is a structural diagram of the locking part;
[0032] Figure 4 This is a schematic diagram of the connecting pipe of this utility model.
[0033] In the figure: First mating part 1; protruding structure 11; groove 111; sealing ring 112; second mating part 2; countersunk hole 21; locking part 3; slot 31; pipe 4. Detailed Implementation
[0034] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.
[0035] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "long," and "short" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0036] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings:
[0037] Example 1:
[0038] like Figure 1-3 As shown, this embodiment provides a pipe connector, including a first mating part 1, a second mating part 2, and a locking part 3. The first mating part 1 and the second mating part 2 each have a channel adapted to a pipe 4. One end of the first mating part 1 is used to connect to a section of pipe 4, and one end of the second mating part 2 is used to connect to another section of pipe 4. The other end of the first mating part 1 and the other end of the second mating part 2 are detachably connected. The locking part 3 is connected at the connection between the first mating part 1 and the second mating part 2 to lock the first mating part 1 and the second mating part 2.
[0039] In this embodiment, the first mating part 1 serves as the male connector and the second mating part 2 serves as the female connector. The two are mated together. The first mating part 1 and the second mating part 2 can be made of metals with a melting point lower than that of the pipe 4, which reduces the welding requirements between the first mating part 1 and the second mating part 2 and the pipe. One end of the first mating part 1 and the second mating part 2 is provided with mounting holes for connecting the pipe 4. During installation, the two sections of pipe 4 are first inserted into the mounting holes of the first mating part 1 and the second mating part 2 respectively, and then welded. This ensures the concentricity of the two pipes 4 and improves the welding error tolerance.
[0040] Specifically, the first mating part 1 has an annular protrusion 11 at one end near the second mating part 2, and the second mating part 2 has a countersunk hole 21 at one end near the first mating part 1. The protrusion 11 is inserted into the countersunk hole 21, and the channel of the first mating part 1 extends out of the protrusion 11, and the channel of the second mating part 2 extends out of the countersunk hole 21.
[0041] In this embodiment, the protrusion structure 11 and the countersunk hole 21 can ensure the concentricity of the first mating part 1 and the second mating part 2 after connection, thereby improving the fault tolerance of the connection.
[0042] Specifically, the length of the protruding structure 11 is adapted to the depth of the countersunk hole 21, a stepped surface is formed inside the countersunk hole 21, and the end face of the protruding structure 11 abuts against the stepped surface.
[0043] In this embodiment, the end face of the protruding structure 11 abuts against the stepped surface to increase the sealing of the connection between the first mating part 1 and the second mating part 2.
[0044] Specifically, a groove 111 is formed on the outer periphery of the protrusion structure 11, and a sealing ring 112 is provided in the groove 111.
[0045] In this embodiment, multiple grooves 111 can be uniformly arranged along the axial direction of the protrusion structure 11, and sealing rings 112 can be arranged in each groove 111, thereby further improving the sealing performance of the first mating part 1 and the second mating part 2.
[0046] Specifically, the outer periphery of the first mating part 1 and the second mating part 2 are respectively provided with folded edges. The folded edges of the first mating part 1 and the second mating part 2 abut against each other and are flush with each other. The locking part 3 is engaged with the folded edges of the first mating part 1 and the second mating part 2.
[0047] Specifically, the locking part 3 has an opening and a slot 31 is provided along the length direction of the locking part 3. The slot 31 is adapted to the folded edge of the first mating part 1 and the folded edge of the second mating part 2. The outer periphery of the folded edge of the first mating part 1 and the folded edge of the second mating part 2 is engaged in the slot 31.
[0048] Specifically, the locking part 3 is interference-fitted with the folded edge of the first mating part 1 and the folded edge of the second mating part 2.
[0049] Example 2:
[0050] This embodiment is similar to Embodiment 1, except that, in this embodiment, as Figure 3As shown, the outer periphery of the locking part 3 protrudes outward to form an equidistant petal-shaped structure, and the width of the locking part 3 is greater than the thickness of the locking part 3.
[0051] In this embodiment, the locking part 3 is a non-circular retaining spring. When unfolded and laid flat, it is flat and its outward bulges form an equidistant petal structure, which can increase its axial structural strength. The locking part 3 also has multiple circumferentially arranged folded edges. Through these folded edges, the locking part 3 can undergo elastic deformation, thereby expanding the opening and making it easier to lock onto the folded edges of the first mating part 1 and the second mating part 2.
[0052] Example 3:
[0053] like Figure 4 As shown, a connecting pipe includes the aforementioned pipe connector and two pipes 4. One pipe 4 is welded to one end of the first mating part 1, and the other pipe 4 is welded to one end of the second mating part 2. The other end of the first mating part 1 and the other end of the second mating part 2 are mated together, and the locking part 3 is fastened to the outer periphery of the first mating part 1 and the second mating part 2.
[0054] Specifically, both of the pipes 4 are copper pipes.
[0055] Example 4:
[0056] This embodiment is similar to embodiment 3, except that in this embodiment, one pipe 4 is a copper pipe and the other pipe 4 is a plastic corrugated pipe.
[0057] In this embodiment, pipe connectors can be used to connect two pipes of different materials.
[0058] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
[0059] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A pipe connector, characterized in that, It includes a first mating part (1), a second mating part (2), and a locking part (3). The first mating part (1) and the second mating part (2) each have a channel adapted to the pipe (4). One end of the first mating part (1) is used to connect to a section of pipe (4), and one end of the second mating part (2) is used to connect to another section of pipe (4). The other end of the first mating part (1) is detachably connected to the other end of the second mating part (2). The locking part (3) is connected at the connection between the first mating part (1) and the second mating part (2) to lock the first mating part (1) and the second mating part (2).
2. A pipe connector according to claim 1, characterized in that, The first mating part (1) has an annular protrusion (11) at one end near the second mating part (2), and the second mating part (2) has a countersunk hole (21) at one end near the first mating part (1). The protrusion (11) is inserted into the countersunk hole (21), and the channel of the first mating part (1) extends out of the protrusion (11), and the channel of the second mating part (2) extends out of the countersunk hole (21).
3. A pipe connector according to claim 2, characterized in that, The length of the protruding structure (11) is adapted to the depth of the countersunk hole (21), a stepped surface is formed inside the countersunk hole (21), and the end face of the protruding structure (11) abuts against the stepped surface.
4. A pipe connector according to claim 2, characterized in that, The outer periphery of the protruding structure (11) has at least one groove (111) and a sealing ring (112) is provided in the groove (111).
5. A pipe connector according to claim 1, characterized in that, The outer periphery of the first mating part (1) and the second mating part (2) are respectively provided with folded edges extending outward. The folded edges of the first mating part (1) and the second mating part (2) abut against each other and are flush with each other. The locking part (3) is engaged with the folded edges of the first mating part (1) and the second mating part (2).
6. A pipe connector according to claim 5, characterized in that, The locking part (3) has an opening and a slot (31) is provided along the length direction of the locking part (3). The slot (31) is adapted to the folded edge of the first mating part (1) and the folded edge of the second mating part (2). The outer periphery of the folded edge of the first mating part (1) and the folded edge of the second mating part (2) is engaged in the slot (31).
7. A pipe connector according to claim 5, characterized in that, The outer periphery of the locking part (3) protrudes outward to form an equidistant petal-like structure, and the width of the locking part (3) is greater than the thickness of the locking part (3).
8. A pipe connector according to any one of claims 5-7, characterized in that, The locking part (3) is interference-fitted with the folded edge of the first mating part (1) and the folded edge of the second mating part (2).
9. A connecting pipe, characterized in that, The pipe connector according to any one of claims 1-8 further includes two pipes (4), one of the pipes (4) is welded to one end of the first mating part (1), and the other pipe (4) is welded to one end of the second mating part (2), the other end of the first mating part (1) and the other end of the second mating part (2) are mated together, and the locking part (3) is locked on the outer periphery of the first mating part (1) and the second mating part (2).
10. A connecting pipe according to claim 9, characterized in that, The pipe (4) is a copper pipe or a plastic corrugated pipe.