Welded part, terminal welding structure, relay and electric meter
By setting anti-splatter grooves around the welding protrusions of the welded parts, the problem of short circuits on PCB boards caused by solder splatter is solved, improving welding efficiency and ensuring welding quality.
Patent Information
- Application Number
- CN202423155657.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-12-20
AI Technical Summary
The problem of solder solution splashing during the soldering process causing short circuits on PCB boards is especially common when the overlap surfaces of the soldered parts are not completely seamless. Solder solution can easily splash outside the soldering overlap area, forming small metal particles that adhere to the copper parts, leading to short circuits.
Anti-spatter grooves are installed around the welding protrusion of the welded parts to prevent the solder solution from spraying out of the welding lap surface. Welding efficiency is improved by generating a concentrated current on the welding protrusion, and the solder solution is collected by the anti-spatter grooves to reduce the possibility of spatter.
It effectively prevents solder solution from splashing outside the soldering overlap area, reduces the risk of short circuits to the PCB board, improves soldering efficiency, and ensures soldering quality.
Smart Images
Figure CN223762325U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of relay technology, specifically to a welding component, a terminal welding structure, a relay, and an electric meter. Background Technology
[0002] In existing resistance brazing processes, the space between the two base materials is filled with solder. The solder has a melting point of 450°C and contains phosphorus, which has a relatively low vaporization temperature of only 300°C to 400°C. The intermediate temperature during welding is approximately 600°C. During welding, the solder is in a molten state, and the impact force created by the vaporized phosphorus breaking through the molten solder surface causes the solution to boil. After boiling, the solution splashes in all directions. However, the overlapping surfaces of the two components cannot be completely seamlessly joined during welding. When a large gap appears between the two overlapping surfaces (due to factors such as corner collapse or soft, easily deformable materials), the solder solution easily splashes outside the welding overlap area, forming fine metal particles that adhere to the copper components. These fine particles have very weak adhesion to the copper substrate and easily fall onto the PCB board, leading to short circuits. Utility Model Content
[0003] To address the shortcomings of existing technologies, this utility model provides a welding component that utilizes anti-splatter grooves around the welding protrusion to improve the defect of solder solution splashing out of the welding overlap area and causing short circuits on the PCB board.
[0004] To achieve the above objectives, this utility model is implemented through the following technical solution:
[0005] A weldable component includes a weldable component body, a welding protrusion on the welding portion of the weldable component body, and at least one anti-splatter groove around the welding protrusion to prevent solder solution from spraying out to the weld lap surface of the welding portion.
[0006] Furthermore, multiple anti-splash grooves are provided at the welding part of the welded part body, and the welding protrusion is configured to be located within the coverage area of the combination of multiple anti-splash grooves.
[0007] Furthermore, the splash guards are long and straight, and each splash guard is arranged at equal intervals.
[0008] Furthermore, the welded protrusion has an annular protrusion structure with a concave center.
[0009] Furthermore, the welded protrusion has a concave annular protrusion structure in the middle.
[0010] Furthermore, an observation notch is provided on the side of the welding area of the welded part body.
[0011] Furthermore, the cross-section of the splash guard is V-shaped.
[0012] Based on the same inventive concept, this utility model also provides a terminal welding structure, including a first welding component and a second welding component, wherein the welding lap surfaces of the first welding component and the second welding component are welded together by resistance brazing, wherein the first welding component is any of the welding components described above.
[0013] Furthermore, the first welded component is a copper welded component structure, and the second welded component is a brass welded component structure.
[0014] Based on the same inventive concept, this utility model also provides a relay, including a first welding component constituting the lead-out terminals of the relay, wherein the first welding component is any of the welding components described above.
[0015] Based on the same inventive concept, this utility model also provides an electricity meter, including a second welded component and the relay described above, wherein the second welded component and the relay are jointly disposed inside the electricity meter, and the first welded component and the second welded component are connected by the aforementioned terminal welding structure.
[0016] The above technical solution has the following advantages or beneficial effects:
[0017] The welding parts, terminal welding structures, relays, and meters described in this utility model feature welding protrusions on the welding areas of the welding parts. When the welding parts overlap with another welding part, the welding protrusions generate a current-gathering effect, thereby improving welding efficiency. Furthermore, anti-splatter grooves are provided around the welding protrusions. In this way, after the solder melts between the welding overlap surfaces of the two welding parts during the welding process, it can flow into the anti-splatter grooves, thereby reducing the possibility of solder solution splashing outside the welding overlap area and avoiding adverse effects such as short circuits on the PCB board. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of the welded component according to an embodiment of the present utility model.
[0019] Figure 2 This is a top view of the welded component according to an embodiment of the present utility model.
[0020] Figure 3 yes Figure 2 Enlarged AA section view in the image.
[0021] Label Explanation:
[0022] 1. Welded part body; 11. Welded protrusion; 12. Anti-splash groove; 13. Observation notch. Detailed Implementation
[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., 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, and 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. Therefore, they should not be construed as limitations on this utility model.
[0025] Please refer to the appendix. Figure 1 To be continued Figure 3 One embodiment of this utility model provides a weldable component, including a weldable component body 1. A welding protrusion 11 is provided on the welding portion of the weldable component body 1. At least one anti-splatter groove 12 is provided around the welding protrusion 11 to prevent solder solution from spraying out beyond the welding overlap surface of the welding portion. It is understood that in this embodiment, by providing the welding protrusion 11 on the welding portion of the weldable component body 1, when the weldable component overlaps with another weldable component for welding, the welding protrusion 11 generates a current-gathering effect, thereby improving welding efficiency. Furthermore, by providing the anti-splatter groove 12 around the welding protrusion 11, the melted solder between the welding overlap surfaces of the two weldable components can flow into the anti-splatter groove 12 during the welding process, thereby reducing the possibility of solder solution splashing outside the welding overlap area and preventing adverse effects such as short circuits on the PCB board.
[0026] Please refer to the appendix. Figure 1 Appendix Figure 2 In one preferred embodiment, a plurality of spaced-apart anti-spatter grooves 12 are provided at the welding portion of the welded body 1, and the welding protrusion 11 is configured to be located within the coverage area of the plurality of anti-spatter grooves 12 combined together. Preferably, the anti-spatter grooves 12 are straight strips, and each anti-spatter groove 12 is arranged at equal intervals. With this arrangement, each anti-spatter groove 12 can more comprehensively prevent the solder solution from splashing out. In addition, in other embodiments, the anti-spatter grooves 12 can also be annular structures, with the welding protrusion 11 located in the annular structure, and when multiple anti-spatter grooves 12 are provided, each anti-spatter groove 12 can be concentrically arranged.
[0027] Please refer to the appendix. Figure 1 Appendix Figure 2 In one preferred embodiment, the welding protrusion 11 has an annular protrusion structure with a concave center. Further, the welding protrusion 11 has a circular annular protrusion structure with a concave center. The annular protrusion structure allows for the generation of a concentrated current during welding.
[0028] Please refer to the appendix. Figure 1 Appendix Figure 2In one preferred embodiment, an observation notch 13 is provided on the side of the welding area of the welded part body 1. The observation notch 13 allows for convenient observation of whether the solder overflows from different angles during welding, eliminating the need to move or pull the welded part for observation and avoiding damage to the welded part.
[0029] Please refer to the appendix. Figure 3 In one preferred embodiment, the anti-spatter groove 12 has a V-shaped cross-section. In this embodiment, the V-shaped cross-section of the anti-spatter groove 12 can form a more regular molten pool, which reduces the disorderly flow of the solder solution. Furthermore, the two inner sides of the anti-spatter groove 12 are inclined, which helps improve gas flow and release conditions, allowing gas to rise well along the inclined surface to the molten pool surface and escape, thereby reducing direct gas impact on the liquid surface and boiling. In addition, the narrow space of the V-shaped cross-section of the anti-spatter groove 12 also limits the range of gas expansion. When gas expansion occurs during welding, the V-shaped cross-section of the anti-spatter groove 12 can more effectively control gas release and reduce spatter.
[0030] Please refer to the appendix. Figure 1 To be continued Figure 3 An embodiment of this utility model also provides a terminal welding structure, including a first welding component and a second welding component (not shown in the figure). The welding lap surfaces of the first welding component and the second welding component are welded together by resistance brazing. The first welding component is any of the welding components described above. Preferably, the first welding component is a copper welding component structure (the reason why the welding protrusion and anti-splash groove are set on the first welding component made of copper material is that copper material is relatively soft and easy to form). The second welding component is a brass welding component structure.
[0031] One embodiment of this utility model also provides a relay, including a first welding member constituting the lead terminals of the relay, wherein the first welding member is the welding member described above.
[0032] An embodiment of this utility model also provides an electricity meter, including a second welded component and the aforementioned relay, wherein the second welded component and the relay are jointly disposed within the electricity meter, and the first welded component and the second welded component are connected by the aforementioned terminal welding structure.
[0033] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model. Therefore, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
Claims
1. A weldment, characterized by: The welding piece body (1) is provided with a welding convex part (11) at the welding position of the welding piece body (1), and at least one anti-splashing groove (12) for preventing the solder solution from splashing out of the welding lap surface of the welding position is arranged at the periphery of the welding convex part (11).
2. The weldment of claim 1, wherein: A plurality of anti-splashing grooves (12) are arranged at the welding position of the welding piece body (1), and the welding convex part (11) is arranged in the coverage area of the plurality of anti-splashing grooves (12) combined together.
3. The weldment of claim 2, wherein: The anti-splashing grooves (12) are linear long strips, and the anti-splashing grooves (12) are arranged at equal intervals.
4. The weldment of claim 1, wherein: The welding convex part (11) is a ring-shaped convex structure with a concave middle part.
5. The weldment of claim 4, wherein: The welding convex part (11) is a ring-shaped convex structure with a concave middle part.
6. The weldment of claim 1, wherein: An observation notch part (13) is arranged at the side edge of the welding position of the welding piece body (1).
7. The weldment of claim 1, wherein: The cross section of the anti-splashing groove (12) is V-shaped.
8. A terminal welding structure characterized by: The first welding piece and the second welding piece are connected by resistance brazing at the welding lap surface, wherein the first welding piece is the welding piece according to any one of claims 1 to 7.
9. The terminal weld structure of claim 8, wherein: The first welding piece is a red copper welding piece structure, and the second welding piece is a brass welding piece structure.
10. A relay characterized by: The first welding piece is a lead-out terminal of a relay, and the first welding piece is the welding piece according to any one of claims 1 to 7.
11. An electricity meter characterized by: The second welding piece and the relay according to claim 10 are arranged in an electric meter, and the first welding piece and the second welding piece are connected by the terminal welding structure according to claim 8 or 9.