Welding ring positioning structure and welding fixing assembly

Abstract

The utility model provides a kind of welding ring positioning structure and welding fixed assembly, welding ring positioning structure includes fixed cushion block, and the one end of fixed cushion block axial has locating part, and locating part is used to accommodate first welding ring;Fixed cushion block is set on first to be fixed structure, and the one end of fixed cushion block with second to be fixed structure abuts;Wherein, fixed cushion block is fixed by first welding ring and second to be fixed structure welding, to relative fixation of first to be fixed structure and second to be fixed structure.This utility model is fixed by setting fixed cushion block, when inverting welding is needed to first welding ring, realize the effective fixation of first welding ring, effectively prevent first welding ring from falling off or leading to position deviation due to gravity, not only reduce the uncertainty and welding difficulty in welding process, also guarantee the welding quality of first welding ring subsequently.

Description

Technical Field

[0001] This utility model relates to the field of welding ring welding structure technology, and more specifically, to a welding ring positioning structure and welding fixing component. Background Technology

[0002] Currently, in existing product welding manufacturing processes, especially in the welding process of pipeline components (e.g., the process of welding and fixing pipelines to the main body), the positioning of the weld ring is a common problem.

[0003] When welding rings need to be welded in an inverted state (e.g., when the welding ring needs to be suspended and fixed to the bottom of the pipeline), the welding ring usually needs to be effectively fixed. However, the existing technology lacks effective fixing and positioning measures for welding rings that need to be welded in an inverted state, which makes the welding ring easy to fall off due to gravity or cause positional displacement. This not only increases the uncertainty and difficulty of the welding process, but may also make the quality of the weld unstable, thereby reducing the overall performance and reliability of the product. Utility Model Content

[0004] This invention provides a welding ring positioning structure and welding fixing assembly to solve the problem in the prior art of lacking effective fixing and positioning measures for welding rings that need to be inverted for welding.

[0005] To address the aforementioned problems, according to one aspect of this utility model, a welding ring positioning structure is provided, comprising a fixing pad, one axial end of which has a positioning portion for accommodating a first welding ring; the fixing pad is sleeved and fixed on a first structure to be fixed, and the end of the fixing pad with the positioning portion abuts against a second structure to be fixed; wherein the fixing pad is welded and fixed to the second structure to be fixed by the first welding ring, so as to fix the first structure to be fixed and the second structure to be fixed relative to each other.

[0006] Furthermore, the positioning part includes a conical surface; wherein, with the direction parallel to the axial direction of the fixing pad and pointing to the end of the fixing pad away from the second structure to be fixed as the first direction, the outer circumferential dimension of the conical surface gradually increases along the first direction, and the conical surface is used for the first welding ring to be fitted.

[0007] Furthermore, the conical surface is a conical surface; the fixed pad is sectioned by a plane parallel to the axial direction of the fixed pad and passing through the central axis of the fixed pad, forming an axial section. The included angle between the two generatrices of the conical surface in the axial section is A, where A is greater than or equal to 50° and less than or equal to 90°.

[0008] Furthermore, the tapered surface has two ends along the axial direction of the fixed pad, namely the first end and the second end, in the axial section. The distance between the first end and the second end along the axial direction of the fixed pad is H, which is greater than or equal to 1.1 mm and less than or equal to 1.3 mm.

[0009] Furthermore, the fixing pad has a through hole inside, which is used to fit with the outer peripheral limit of the first structure to be fixed; the through hole is a cylindrical hole with an internal diameter of D3; the plane on which the fixing pad abuts against the second structure to be fixed is a first plane with a diameter of D1, and 1.7*D3≤D1≤2*D3.

[0010] Furthermore, the first plane is located at one end of the conical surface along the axial direction of the fixed pad, and the other end of the conical surface along the axial direction of the fixed pad has a second plane, with the first plane and the second plane being arranged parallel to each other.

[0011] Furthermore, the positioning part includes a fixing protrusion that protrudes outward along the radial direction of the fixing pad; the end of the fixing protrusion facing the second structure to be fixed forms a second plane.

[0012] Furthermore, the plane on which the fixing pad abuts against the second structure to be fixed is a first plane, and the first plane has a fixing groove. The depth direction of the fixing groove is parallel to the axial direction of the fixing pad, and the fixing groove is used to accommodate the second welding ring.

[0013] Furthermore, the fixing pad has a through hole inside, which is used to limit the fit with the outer periphery of the first structure to be fixed; the through hole penetrates the first plane; wherein, the fixing groove is connected to the through hole, and the unwelded second welding ring is sleeved on the outer periphery of the first structure to be fixed.

[0014] According to another aspect of the present invention, a welding fixing assembly is provided, which includes the aforementioned welding ring positioning structure; the welding fixing assembly also includes a first structure to be fixed and a second structure to be fixed; the fixing pad has a through hole inside, and the through hole is interference-fitted with the outer periphery of the first structure to be fixed, so that the fixing pad is fixed on the first structure to be fixed; the second structure to be fixed has a mating hole, and one end of the first structure to be fixed is inserted into the mating hole and is interference-fitted with the mating hole, so that the first structure to be fixed and the second structure to be fixed are relatively fixed.

[0015] Furthermore, the first structure to be fixed is a connecting pipe, the interior of which communicates with the mating hole; and / or, the second structure to be fixed is one of the valve body, the main pipeline of the manifold, or the housing of the distributor.

[0016] By applying the technical solution of this utility model, this utility model provides a welding ring positioning structure, including a fixing pad, one end of which has a positioning part for accommodating a first welding ring; the fixing pad is sleeved and fixed on a first structure to be fixed, and the end of the fixing pad with the positioning part abuts against a second structure to be fixed; wherein, the fixing pad is welded and fixed to the second structure to be fixed by the first welding ring, so as to fix the first structure to be fixed and the second structure to be fixed relative to each other.

[0017] This invention, by setting a fixing pad and limiting the first welding ring with the positioning part, effectively fixes the first welding ring when it needs to be welded upside down. This effectively prevents the first welding ring from falling off or shifting its position due to gravity, reducing uncertainty and difficulty in the welding process and ensuring the subsequent welding quality of the first welding ring, thereby improving the overall performance and reliability of the product. This invention, by welding the first welding ring and setting a fixing pad to fix it onto the first structure to be fixed, achieves reliable fixation between the first welding ring, the fixing pad, the first structure to be fixed, and the second structure to be fixed. This strengthens the welding strength between the second and first structures to be fixed, especially when the thickness of the second structure to be fixed is small, limiting the insertion depth of the first structure. If the second and first structures to be fixed were directly welded, the welding strength would be low due to the shallow insertion depth. The design of the fixing pad and the first welding ring in this invention avoids this problem, improving the welding strength between the second and first structures with a simple structure. The welding ring positioning structure proposed in this invention significantly improves the safety and efficiency of the welding process, enabling the first welding ring to be accurately positioned and securely installed. This effectively avoids the risk of the welding ring falling off during inverted welding, simplifies the assembly process before welding, reduces the complexity of manual operation, and lowers manufacturing costs. In practical use, it has been found that applying the welding ring positioning structure proposed in this invention to the pipe assembly structure of refrigeration equipment not only enhances the connection strength between components but also optimizes the overall performance of the refrigeration system, providing a guarantee for the long-term stable operation of the product. This invention has a simple structure and low cost, is easy to assemble and use, and is suitable for large-scale promotion and use. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0019] Figure 1 A schematic diagram of the internal structure of a portion of the welding fixing assembly provided in an embodiment of the present invention is shown.

[0020] Figure 2 A schematic diagram of the internal structure of the fixing pad provided in an embodiment of the present invention is shown.

[0021] The above figures include the following reference numerals:

[0022] 10. Fixing pad; 11. Conical surface; 12. Through hole; 13. First plane; 14. Fixing protrusion; 15. Fixing groove;

[0023] 20. First weld ring;

[0024] 30. The first structure to be fixed;

[0025] 40. Second structure to be fixed; 41. Mating hole;

[0026] 50. Second welding ring. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0028] like Figures 1 to 2 As shown, an embodiment of this utility model provides a welding ring positioning structure, including a fixing pad 10. One axial end of the fixing pad 10 has a positioning part, which is used to accommodate a first welding ring (for example, an unwelded first welding ring 20 is sleeved on the positioning part, and the first welding ring 20 is limitedly matched with the positioning part). The fixing pad 10 is sleeved and fixed on a first structure to be fixed 30, and one end of the fixing pad 10 with the positioning part abuts against a second structure to be fixed 40 (the other axial end of the unwelded first welding ring 20 can abut against the second structure to be fixed 40). The fixing pad 10 is fixed to the second structure to be fixed 40 by welding the first welding ring 20 to fix it, so as to fix the first structure to be fixed 30 and the second structure to be fixed 40 relative to each other.

[0029] This invention, by setting a fixing pad 10 and limiting the first welding ring 20 with the positioning part, effectively fixes the first welding ring 20 when it needs to be welded upside down. This effectively prevents the first welding ring 20 from falling off or shifting its position due to gravity, reducing uncertainty and difficulty in the welding process, ensuring the subsequent welding quality of the first welding ring 20, and thus improving the overall performance and reliability of the product. This invention, by welding the first welding ring 20 and setting the fixing pad 10 to fix it onto the first structure to be fixed 30, achieves good connection between the first welding ring 20, the fixing pad 10, the first structure to be fixed 30, and the second structure to be fixed 40. The reliable fixing enhances the welding strength between the second structure to be fixed 40 and the first structure to be fixed 30. Especially when the thickness of the second structure to be fixed 40 is small, resulting in a limited insertion depth of the first structure to be fixed 30 into the second structure to be fixed 40, if the second structure to be fixed 40 and the first structure to be fixed 30 are directly welded, the welding strength between the second structure to be fixed 40 and the first structure to be fixed 30 will be low due to the small insertion depth. The design of the fixing pad 10 and the first welding ring 20 proposed in this utility model can avoid the above problems and improve the welding strength between the second structure to be fixed 40 and the first structure to be fixed 30 with a simple structure. The welding ring positioning structure proposed in this invention significantly improves the safety and efficiency of the welding process, enabling the first welding ring 20 to be accurately positioned and securely installed. This effectively avoids the risk of the welding ring falling off during inverted welding, simplifies the assembly process before welding, reduces the complexity of manual operation, and lowers manufacturing costs. In practical use, it has been found that applying the welding ring positioning structure proposed in this invention to the pipe assembly structure of refrigeration equipment can not only enhance the connection strength between components but also optimize the overall performance of the refrigeration system, providing a guarantee for the long-term stable operation of the product. This invention has a simple structure and low cost, is easy to assemble and use, and is suitable for large-scale promotion and use.

[0030] like Figure 1 and Figure 2 As shown, the positioning part includes a conical surface 11, which is located on the outer periphery of the fixing pad 10 (the unwelded first welding ring 20 is sleeved on the conical surface 11 and is limited to fit with the conical surface 11); wherein, with the direction parallel to the axial direction of the fixing pad 10 and pointing to the end of the fixing pad 10 away from the second structure to be fixed 40 as the first direction, the outer periphery dimension of the conical surface 11 gradually increases along the first direction, and the conical surface 11 is used for the first welding ring 20 to be sleeved.

[0031] By setting the tapered surface 11 to cooperate with the first welding ring 20, the guiding and fixing effect of the tapered surface 11 allows the first welding ring 20 to be accurately positioned in the predetermined position during the welding process. Simultaneously, the slope of the tapered surface 11 further aids in the positioning of the first welding ring 20, enhancing the strength and stability of the weld. This design achieves precise control of the position of the first welding ring 20 during welding, facilitating the formation of a high-quality weld. Practical applications include piping components requiring inverted welding, such as pipe connections in refrigeration systems and pipe fixing in automotive engine cooling systems.

[0032] like Figure 2 As shown, the conical surface 11 is a conical surface; the fixed pad 10 is cross-sectioned by a plane parallel to the axial direction of the fixed pad 10 and passing through the central axis of the fixed pad 10, forming an axial section. The included angle between the two generatrices of the conical surface 11 in the axial section is A, where A is greater than or equal to 50° and less than or equal to 90°.

[0033] By setting the angle A of the conical surface 11, appropriate guiding and supporting effects can be generated during the welding process, ensuring the contact force between the first welding ring 20 and the second structure to be fixed 40, thereby improving the welding quality and connection strength. The implementation effect is that the positioning of the first welding ring 20 during the welding process is more accurate, and the weld quality is significantly improved.

[0034] In addition, it is worth noting that by setting 50°≤A≤90°, the first welding ring 20 can be in close contact with the second structure to be fixed 40 under the guidance of the conical surface 11, and after the first welding ring 20 melts, it can easily enter between the second structure to be fixed 40, the fixing pad 10 and the first structure to be fixed 30 through capillary action.

[0035] like Figure 2 As shown, the two ends of the tapered surface 11 along the axial direction of the fixed pad 10 are the first end and the second end, respectively. The distance between the first end and the second end along the axial direction of the fixed pad 10 is H, which is greater than or equal to 1.1 mm and less than or equal to 1.3 mm.

[0036] By controlling the distance H between the two ends of the tapered surface 11 along the axis, the fit between the first welding ring 20 and the fixed pad 10 can be adjusted to ensure that the welding ring will not easily slip or fall off during the welding process, and at the same time, the solder can fully fill the gap to form a strong weld. This setting significantly improves the stability of the first welding ring 20 and the reliability of the weld during the welding process.

[0037] like Figure 2As shown, the fixing pad 10 has a through hole 12 inside, which is used to limit the fit with the outer periphery of the first structure to be fixed 30; the through hole 12 is a cylindrical hole with an inner diameter of D3; the plane on which the fixing pad 10 abuts against the second structure to be fixed 40 is a first plane 13, the diameter of the first plane 13 is D1, and 1.7*D3≤D1≤2*D3.

[0038] By setting the diameter D3 of the through hole 12 and the diameter D1 of the first plane 13, the fixing strength between the fixing pad 10 and the second structure to be fixed 40 can be ensured. At the same time, the size design of the first plane 13 is conducive to the uniform distribution of the solder and enhances the reliability of the weld. The above design achieves high strength and stability of the welded connection.

[0039] Additionally, it is worth noting that by setting 1.7*D3≤D1≤2*D3, D1 is prevented from being too small or too large. If D1 is too small, the area of ​​the first plane 13 will not meet the requirements for effective welding area, thus failing to guarantee the fixing strength between the fixing pad 10 and the second structure to be fixed 40, resulting in poor welding effect. If D1 is too large, the path of the solder on the outside of the fixing pad 10 (e.g., the first welding ring 20) melting and entering the interior of the fixing pad 10 (e.g., the gap between the fixing pad 10 and the second structure to be fixed 40) will be longer, thereby reducing the welding fixing effect inside the fixing pad 10.

[0040] like Figure 2 As shown, the first plane 13 is located at one end of the conical surface 11 along the axial direction of the fixed pad 10, and the other end of the conical surface 11 along the axial direction of the fixed pad 10 has a second plane. The first plane 13 and the second plane are arranged parallel to each other.

[0041] In one specific embodiment of this utility model, the diameter of the second plane is D2, where D2 = D1 + 2 * [H / tan(A / 2)].

[0042] By setting the relative position and size relationship between the first plane 13 and the second plane, the shape of the conical surface 11 can be further defined to ensure the uniformity and integrity of the weld. At the same time, the size design relationship between the second plane and the first plane 13 also makes the conical surface 11 a perfect circular conical surface (that is, the projection of the vertex of the conical surface along the central axis onto the bottom surface is the center of the bottom surface), which facilitates the processing and forming of the conical surface 11.

[0043] like Figure 1 and Figure 2As shown, the positioning part includes a fixing protrusion 14, which is located on the outer periphery of the fixing pad 10 and protrudes outward along the radial direction of the fixing pad 10; the end of the fixing protrusion 14 facing the second structure to be fixed 40 forms a second plane; the first welding ring 20 is located between the fixing protrusion 14 and the second structure to be fixed 40; when welding the first welding ring 20, the fixing protrusion 14 is used to stop the solder and / or the molten first welding ring 20; and / or, the fixing protrusion 14 and the first welding ring 20 are matched in a limiting engagement along the axial direction at one end.

[0044] The presence of the fixed protrusion 14 can effectively prevent excessive diffusion of solder during the welding process, ensuring that the solder is concentrated in the predetermined welding area. At the same time, the limiting cooperation between the fixed protrusion 14 and the first welding ring 20 also helps to position the first welding ring 20 and prevent the welding ring from shifting its position during the welding process. This setting makes the solder control during the welding process more precise and the weld quality more stable.

[0045] like Figure 1 and Figure 2 As shown, the plane on which the fixing pad 10 abuts against the second structure to be fixed 40 is a first plane 13. The first plane 13 has a fixing groove 15. The depth direction of the fixing groove 15 is parallel to the axial direction of the fixing pad 10. The fixing groove 15 is used to accommodate the second welding ring 50. At least a portion of the unwelded second welding ring 50 is located in the fixing groove 15 and is limited to fit with the inner wall of the fixing groove 15. One end of the second welding ring 50 along the axial direction can abut against the second structure to be fixed 40, and the other end can abut against the bottom wall of the fixing groove 15. The fixing pad 10 and the second structure to be fixed 40 are fixed relative to each other by welding the second welding ring 50.

[0046] By setting the second welding ring 50 to cooperate with the fixing groove 15, the stable connection between the fixing pad 10 and the second structure to be fixed 40 can be further ensured. At the same time, the welding of the second welding ring 50 also helps to enhance the strength and stability of the entire welding ring positioning structure. The implementation effect of the above design is that the welded connection has higher strength and more stable performance. Application scenarios include occasions that require multi-point welding and need to enhance connection strength, such as the connection between pipes and housing in refrigeration equipment, and the fixing of pipes in automotive engine cooling systems.

[0047] like Figure 1 and Figure 2 As shown, the fixing pad 10 has a through hole 12 inside, which is used to limit the fit with the outer periphery of the first structure to be fixed 30; the through hole 12 passes through the first plane 13; wherein, the fixing groove 15 is connected to the through hole 12, and the unwelded second welding ring 50 is sleeved on the outer periphery of the first structure to be fixed 30.

[0048] The connection between the through hole 12 and the fixing groove 15 ensures the stable position of the second welding ring 50 during the welding process. Simultaneously, the second welding ring 50, fitted around the outer periphery of the first structure to be fixed 30, helps enhance the connection strength between the first and second structures to be fixed 40. This design results in a welded connection that is not only strong but also tighter and more airtight. Practical applications include situations requiring high-strength connections and seals, such as the connection between pipes and housings in refrigeration equipment, and the fixing of pipes in automotive engine cooling systems.

[0049] like Figure 1 and Figure 2 As shown, this utility model also provides a welding fixing assembly, which includes the above-mentioned welding ring positioning structure; the welding fixing assembly also includes a first structure to be fixed 30 and a second structure to be fixed 40; the fixing pad 10 has a through hole 12 inside, and the through hole 12 is interference-fitted with the outer periphery of the first structure to be fixed 30 so that the fixing pad 10 is fixed on the first structure to be fixed 30; the second structure to be fixed 40 has a mating hole 41, one end of the first structure to be fixed 30 is inserted into the mating hole 41 and is interference-fitted with the mating hole 41 so that the first structure to be fixed 30 and the second structure to be fixed 40 are relatively fixed.

[0050] By setting the fixing pad 10 to an interference fit with the first structure to be fixed 30 and the second structure to be fixed 40, a tight connection between the various components before welding can be ensured. Simultaneously, during welding, the stable fit between the welding ring positioning structure and the first and second structures to be fixed 30 and 40 also helps improve welding quality and connection strength. This setup results in a welded connection that is not only strong but also tighter, with more accurate welding ring positioning during the welding process, significantly improving weld quality. Practical applications include refrigeration equipment, valves, automobile manufacturing, and many other fields, especially in situations requiring multi-angle welding and high-precision connections.

[0051] like Figure 1 As shown, the first structure to be fixed 30 is a connecting pipe, the interior of which is connected to the mating hole 41; and / or, the second structure to be fixed 40 is one of the valve body, the main pipeline of the manifold, or the housing of the distributor.

[0052] By selecting a suitable connecting pipe as the first structure to be fixed 30, a stable connection between the connecting pipe and the second structure to be fixed 40 can be ensured. At the same time, the communication between the inside of the connecting pipe and the mating hole 41 also helps to enhance the connection strength between the connecting pipe and the second structure to be fixed 40. The above design makes the welded connection not only strong but also tighter. In addition, the positioning of the weld ring during the welding process is more accurate, and the weld quality is significantly improved. It is suitable for occasions that require high-strength connection and sealing.

[0053] In a specific embodiment of this utility model, the welding ring positioning structure is used for welding the pipe assembly structure. The second structure to be fixed 40 in the welding ring positioning structure matches the valve body in the pipe assembly structure. The first structure to be fixed 30 is a copper pipe, and the inside of the copper pipe is connected to the inside of the valve body through the second structure to be fixed 40.

[0054] In another specific embodiment of this utility model, the welding ring positioning structure is used for welding the pipe assembly structure inside the refrigeration equipment; the welding ring positioning structure is installed at the corresponding position of the refrigeration equipment, and the first structure to be fixed 30 is a copper pipe, which is connected to the refrigeration cycle system of the refrigeration equipment.

[0055] The present invention will now be described in detail with reference to a specific embodiment as follows:

[0056] The welding and fixing assembly disclosed in this utility model includes a valve body (i.e., the second structure to be fixed 40), a first welding ring 20, a fixing pad 10, and a copper tube (i.e., the first structure to be fixed 30). The fixing pad 10 is provided with a conical surface 11 and a fixing protrusion 14. The first welding ring 20 is installed on the conical surface 11 of the fixing pad 10, and the fixing pad 10 is always in contact with the valve body. Before actual welding, the copper tube is first pressed into the through hole 12 of the fixing pad 10, and the first welding ring 20 is fitted onto the conical surface 11 of the fixing pad 10. Then, the fixing pad 10 and the first welding ring 20 are pressed into the valve body simultaneously, and the assembly is completed. Finally, the next welding process begins.

[0057] The fixing pad 10 is welded to the second structure to be fixed 40 and the first structure to be fixed 30 through the first welding ring 20, which can enhance the welding strength between the second structure to be fixed 40 and the first structure to be fixed 30. Especially when the thickness of the second structure to be fixed 40 is small, when the second structure to be fixed 40 is directly welded to the first structure to be fixed 30, the insertion depth of the first structure to be fixed 30 is small and the welding strength is low. The setting of the fixing pad 10 can solve the above problems.

[0058] The mating holes 41 of the first structure to be fixed 30 and the second structure to be fixed 40, and the through hole 12 of the fixing pad 10 are all interference fit, so that the fixing pad 10 and the first structure to be fixed 30 can maintain tight contact after being pressed into place.

[0059] The fixing groove 15 between the fixing pad 10 and the first structure to be fixed 30 can also accommodate the second welding ring 50. Of course, if there is no first welding ring 20 and only the second welding ring 50, the welding effect is generally poor in actual tests. Therefore, the first welding ring 20 and the second welding ring 50 need to be used together. After the first welding ring 20 is melted by welding, it can enter the gap between the second structure to be fixed 40, the fixing pad 10 and the first structure to be fixed 30 through capillary action, thereby further improving the connection strength. In addition, the first welding ring 20 can make close contact with the second structure to be fixed 40 under its own elasticity and the action of the conical surface 11 to ensure the welding connection strength and a certain degree of sealing. Therefore, this utility model proposes an improved welding ring positioning structure, which aims to overcome the defects in the traditional technology and improve the welding quality and production efficiency.

[0060] In summary, this utility model provides a welding ring positioning structure and welding fixing assembly. By setting a fixing pad 10, and with the first welding ring 20 and the fixing pad 10 providing a limiting fit, this utility model effectively fixes the first welding ring 20 when it needs to be welded upside down. This effectively prevents the first welding ring 20 from falling off due to gravity or shifting its position, reducing uncertainty and difficulty in the welding process, ensuring the subsequent welding quality of the first welding ring 20, and thus improving the overall performance and reliability of the product. This utility model, by welding the first welding ring 20 and setting the fixing pad 10 to fix it onto the first structure to be fixed 30, achieves the positioning and fixing of the first welding ring 20, the fixing pad 10, and the first structure to be fixed. The reliable fixing between the first structure to be fixed (30) and the second structure to be fixed (40) enhances the welding strength between them. This is especially important when the thickness of the second structure to be fixed (40) is small, limiting the insertion depth of the first structure to be fixed (30). If the second structure to be fixed (40) and the first structure to be fixed (30) are directly welded together, the welding strength will be low due to the shallow insertion depth. The design of the fixing pad 10 and the first welding ring 20 proposed in this invention avoids the above problems and improves the welding strength between the second structure to be fixed (40) and the first structure to be fixed (30) with a simple structure. The welding ring positioning structure proposed in this invention significantly improves the safety and efficiency of the welding process, enabling the first welding ring 20 to be accurately positioned and securely installed. This effectively avoids the risk of the welding ring falling off during inverted welding, simplifies the assembly process before welding, reduces the complexity of manual operation, and lowers manufacturing costs. In practical use, it has been found that applying the welding ring positioning structure proposed in this invention to the pipe assembly structure of refrigeration equipment can not only enhance the connection strength between components but also optimize the overall performance of the refrigeration system, providing a guarantee for the long-term stable operation of the product. This invention has a simple structure and low cost, is easy to assemble and use, and is suitable for large-scale promotion and use.

[0061] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0062] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0063] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0064] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0065] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0066] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A weld ring positioning structure, characterized by, The device includes a fixing pad (10), one axial end of which has a positioning part for accommodating a first welding ring (20); the fixing pad (10) is sleeved and fixed on a first structure to be fixed (30), and the end of the fixing pad (10) with the positioning part abuts against a second structure to be fixed (40); wherein the fixing pad (10) is welded and fixed to the second structure to be fixed (40) by the first welding ring (20) to fix the first structure to be fixed (30) and the second structure to be fixed (40) relative to each other.

2. The welding ring positioning structure according to claim 1, characterized in that, The positioning part includes a conical surface (11); wherein, with the first direction being the direction parallel to the axial direction of the fixing pad (10) and pointing to the end of the fixing pad (10) away from the second structure to be fixed (40), the outer circumferential dimension of the conical surface (11) gradually increases along the first direction, and the conical surface (11) is used for the first welding ring (20) to be fitted.

3. The welding ring positioning structure according to claim 2, characterized in that, The conical surface (11) is a conical surface; the fixed pad (10) is cross-sectioned by a plane parallel to the axial direction of the fixed pad (10) and passing through the central axis of the fixed pad (10), forming an axial section. The included angle between the two generatrices of the conical surface (11) in the axial section is A, where A is greater than or equal to 50° and less than or equal to 90°.

4. The welding ring positioning structure according to claim 3, characterized in that, The tapered surface (11) has a first end and a second end at its two ends along the axial direction of the fixed pad (10) in the axial section. The distance between the first end and the second end along the axial direction of the fixed pad (10) is H, which is greater than or equal to 1.1 mm and less than or equal to 1.3 mm.

5. The welding ring positioning structure according to claim 4, characterized in that, The fixing pad (10) has a through hole (12) inside, which is used to limit the fit with the outer periphery of the first structure to be fixed (30); the through hole (12) is a cylindrical hole with an inner diameter of D3; the plane on which the fixing pad (10) abuts against the second structure to be fixed (40) is a first plane (13), and the diameter of the first plane (13) is D1, 1.7*D3≤D1≤2*D3.

6. The welding ring positioning structure according to claim 5, characterized in that, The first plane (13) is located at one end of the conical surface (11) along the axial direction of the fixed pad (10), and the other end of the conical surface (11) along the axial direction of the fixed pad (10) has a second plane. The first plane (13) is arranged parallel to the second plane.

7. The welding ring positioning structure according to claim 6, characterized in that, The positioning part includes a fixing protrusion (14) that protrudes outward along the radial direction of the fixing pad (10); the end of the fixing protrusion (14) facing the second structure to be fixed (40) forms the second plane.

8. The welding ring positioning structure according to claim 1, characterized in that, The fixing pad (10) has a first plane (13) on its surface that abuts against the second structure to be fixed (40). The first plane (13) has a fixing groove (15) with the depth direction of the fixing groove (15) parallel to the axial direction of the fixing pad (10). The fixing groove (15) is used to accommodate the second welding ring (50).

9. The welding ring positioning structure according to claim 8, characterized in that, The fixing pad (10) has a through hole (12) inside, which is used to limit the fit with the outer periphery of the first structure to be fixed (30); the through hole (12) penetrates the first plane (13); wherein, the fixing groove (15) is connected to the through hole (12), and the second welding ring (50) is sleeved on the outer periphery of the first structure to be fixed (30).

10. A welding fixing assembly, characterized in that, The welding fixing assembly includes the welding ring positioning structure according to any one of claims 1 to 9; the welding fixing assembly further includes a first structure to be fixed (30) and a second structure to be fixed (40); the fixing pad (10) has a through hole (12) inside, the through hole (12) is interference-fitted with the outer periphery of the first structure to be fixed (30) so that the fixing pad (10) is fixed on the first structure to be fixed (30); the second structure to be fixed (40) has a mating hole (41), one end of the first structure to be fixed (30) is inserted into the mating hole (41) and is interference-fitted with the mating hole (41) so that the first structure to be fixed (30) and the second structure to be fixed (40) are relatively fixed.

11. The welding fixing assembly according to claim 10, characterized in that, The first structure to be fixed (30) is a connecting pipe, the interior of which is connected to the mating hole (41); and / or, the second structure to be fixed (40) is one of the valve body, the main pipeline of the manifold, or the housing of the distributor.

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