Composite lightning protection device structure

Abstract

The utility model discloses a composite lightning protection device structure, including forming electrode holder, first circuit protection device and second circuit protection device, the forming electrode holder includes first pin, second pin and common pin, first circuit protection device and second circuit protection device each other series connection, first pin is connected on first circuit protection device upper end face, second pin is connected on second circuit protection device lower end face, common pin is connected on first circuit protection device and second circuit protection device each other contact's end face. This lightning protection device structure can form fixed to first circuit protection device and second circuit protection device, and the plug-in assembly is convenient, can adapt to the continuous batch production on the automation equipment, has simplified the procedure, has improved production efficiency, has guaranteed product performance index consistency, has increased the welding area of first circuit protection device and second circuit protection device simultaneously, has improved the welding reliability, has strengthened the through -flow capacity.

Description

Technical Field

[0001] This utility model relates to the field of lightning protection facilities, and in particular to a composite lightning protection device structure. Background Technology

[0002] In traditional surge protection devices, varistors and discharge tubes are typically connected via PCB circuitry or wires, requiring either plug-in assembly or independent soldering processes. This approach is complex, increasing production costs and potentially damaging component performance during processing, thus affecting product reliability. Furthermore, traditional processes are difficult to scale up for efficient production, limiting product consistency and application efficiency.

[0003] In existing technologies, the discharge tube end face is typically directly welded to the varistor plating to simplify the structure. However, limitations in the compatibility of welding materials and processes result in insufficient welding area, poor wettability, and a significant reduction in current carrying capacity. Such structures are prone to connection failure under surge impact, making it difficult to meet the requirements of high-reliability scenarios and limiting the performance improvement and widespread application of composite devices. Therefore, improvements should be made to the existing surge protection device structure to address these issues. Utility Model Content

[0004] In view of this, the present invention addresses the deficiencies of the existing technology, and its main objective is to provide a composite lightning protection device structure. This structure is formed by placing a first circuit protection device and a second circuit protection device on a molded electrode frame. This structure can fix the first and second circuit protection devices, facilitate plug-in assembly, and improve production efficiency. At the same time, it improves welding reliability and enhances current carrying capacity.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A composite lightning protection device structure includes a molded electrode frame, a first circuit protection device, and a second circuit protection device. The molded electrode frame includes a first pin, a second pin, and a common pin. The first circuit protection device and the second circuit protection device are connected in series. The first pin is connected to the upper end face of the first circuit protection device; the second pin is connected to the lower end face of the second circuit protection device; and the common pin is connected to the end faces of the first circuit protection device and the second circuit protection device that are in contact with each other.

[0007] As a preferred embodiment: the common pin includes an arc-shaped contact portion and two electrode feet integrally connected to both ends of the arc-shaped contact portion, wherein the arc-shaped contact portion and the electrode feet are on the same plane.

[0008] As a preferred embodiment: the rear ends of the first pin and the second pin are respectively staggered vertically from the arc-shaped contact portion, forming a first accommodating area for mounting a first circuit protection device between the rear end of the first pin and the arc-shaped contact portion, and forming a second accommodating area for mounting a second circuit protection device between the rear end of the second pin and the arc-shaped contact portion.

[0009] As a preferred embodiment: both the first circuit protection device and the second circuit protection device are varistors; one varistor is located in the first accommodating region, and the other varistor is located in the second accommodating region.

[0010] As a preferred embodiment: the first circuit protection device is a discharge tube, the second circuit protection device is a varistor, the arc-shaped contact portion surrounds to form a positioning space adapted to the outer wall of the discharge tube, the first circuit protection device is embedded in the positioning space; the second circuit protection device is located in the second accommodating area.

[0011] As a preferred embodiment: the two pins of the common pin are test pins, which are shorter than the first pin and the second pin, and are suspended.

[0012] As a preferred embodiment: the arc-shaped contact portion is semi-circular, and the rear ends of the two pole feet surround the arc-shaped contact portion and are integrally connected to the two ends of the opening of the arc-shaped contact portion.

[0013] As a preferred embodiment: when the pins of the molded electrode holder are not cut off, the first pin, the second pin, and the common pin are integrally connected to each other.

[0014] As a preferred embodiment: the rear ends of the first pin and the second pin are respectively bent to correspond to the central region of the arc-shaped contact portion; the bending directions of the rear ends of the first pin and the second pin are opposite to each other and intersecting.

[0015] As a preferred embodiment, the shaped electrode frame is made of tin-plated copper-clad steel wire.

[0016] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution, by placing the first circuit protection device and the second circuit protection device on the forming electrode frame to form a composite lightning protection device structure, this lightning protection device structure can fix the first circuit protection device and the second circuit protection device, which is convenient for plug-in assembly, can be adapted to continuous batch production on automated equipment, simplifies the process, improves production efficiency, and ensures the consistency of product performance indicators; at the same time, it increases the welding area of ​​the first circuit protection device and the second circuit protection device, improves welding reliability, and enhances current carrying capacity.

[0017] To more clearly illustrate the structural features and effects of this utility model, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the first lightning protection device of this utility model with its pins not cut off.

[0019] Figure 2 This is a three-dimensional schematic diagram of the structure of the first lightning protection device of this utility model from another perspective;

[0020] Figure 3 This is an exploded perspective view of the first lightning protection device of this utility model;

[0021] Figure 4 for Figure 3 Another perspective on the decomposed 3D diagram;

[0022] Figure 5 This is a schematic diagram of the second type of lightning protection device structure with the pins not cut off according to this utility model;

[0023] Figure 6 This is a three-dimensional schematic diagram of the second lightning protection device structure of this utility model from another perspective;

[0024] Figure 7 This is an exploded perspective view of the second type of lightning protection device of this utility model;

[0025] Figure 8 This is a further exploded perspective view of the second type of lightning protection device of this utility model;

[0026] Figure 9 for Figure 8 Another perspective on the decomposed 3D diagram;

[0027] Figure 10 This is a schematic diagram of the first lightning protection device of this utility model after the pins have been cut off.

[0028] Figure 11 This is a schematic diagram of the second type of lightning protection device structure after the pins have been cut off.

[0029] Explanation of reference numerals in the attached diagram:

[0030] 10. Molded electrode holder; 11. First pin; 12. Second pin; 13. Common pin; 131. Arc-shaped contact portion; 132. Electrode foot; 133. First receiving area; 134. Second receiving area; 135. Positioning space; 20. First circuit protection device; 30. Second circuit protection device. Detailed Implementation

[0031] This utility model is as follows Figures 1 to 11As shown, a composite lightning protection device structure includes a molded electrode frame, a first circuit protection device, and a second circuit protection device, wherein:

[0032] The shaped electrode holder includes a first pin, a second pin, and a common pin. The first circuit protection device and the second circuit protection device are connected in series. The first pin is connected to the upper end face of the first circuit protection device, and the second pin is connected to the lower end face of the second circuit protection device to form a series connection between the first circuit protection device and the second circuit protection device. The common pin is connected to the end faces of the first circuit protection device and the second circuit protection device that are in contact with each other.

[0033] The common pin includes an arc-shaped contact portion and two terminals integrally connected to both ends of the arc-shaped contact portion. The arc-shaped contact portion and the terminals are on the same plane to ensure tight and stable contact with the end faces of the first and second circuit protection devices that are in contact with each other. The rear ends of the first and second pins are respectively offset vertically from the arc-shaped contact portion, forming a first receiving area for mounting the first circuit protection device between the rear end of the first pin and the arc-shaped contact portion, and a second receiving area for mounting the second circuit protection device between the rear end of the second pin and the arc-shaped contact portion. The arrangement of the first and second receiving areas facilitates the installation and fixation of the first and second circuit protection devices.

[0034] The first and second pins are the main current-carrying pins. The two pins of the common pin are for testing (such as signal monitoring) and are in a floating position, that is, shorter than the first and second pins. When used for single-phase protection, the first pin is the PE terminal, the second pin is the L terminal, and the two pins of the common pin are the N terminal.

[0035] The arc-shaped contact portion is semi-circular, and the rear ends of the two poles surround the arc-shaped contact portion and are integrally connected to the two ends of the opening of the arc-shaped contact portion, resulting in a compact overall structure. The rear ends of the first and second pins are bent to correspond to the central area of ​​the arc-shaped contact portion, so as to make contact with the center of the ends of the first and second circuit protection devices, thereby improving the stability of the electrical connection. The bending directions of the rear ends of the first and second pins are opposite to each other and cross each other. This design is similar to two arms crossing over each other, enclosing the first and second circuit protection devices in the first and second receiving areas, thereby improving the stability and balance of the installation and enhancing the operational stability of the product.

[0036] In this embodiment, both the first circuit protection device and the second circuit protection device are varistors; one varistor is located in the first accommodating region, and the other varistor is located in the second accommodating region.

[0037] In another embodiment, the first circuit protection device is a discharge tube, the second circuit protection device is a varistor, the arc-shaped contact portion surrounds to form a positioning space adapted to the outer wall of the discharge tube, the first circuit protection device is embedded in the positioning space, and the positioning space provides a stable limit for the first circuit protection device; the second circuit protection device is located in the second accommodating area.

[0038] When the pins of the formed electrode frame are not cut off, the first pin, the second pin, and the common pin are integrally connected to each other, and the formed electrode frame is made of tin-plated copper-clad steel wire.

[0039] This composite device of varistor and discharge tube is formed by continuously dip-soldering varistor and discharge tube elements through a molded electrode frame (tin-plated copper-clad steel wire molded electrode). It has overvoltage and surge protection functions. This structure is easy to continuously form using automated equipment, reducing intermediate processes, and is clean and efficient.

[0040] The tin-plated copper-clad steel wire forming electrode is formed through integrated continuous wire bonding; the discharge tube and varistor are snapped onto the pins (electrodes) via inserts; the electrode is welded to the metal end face of the discharge tube and the plating layer of the varistor via a dip soldering process. This composite structure fully considers the dip soldering tension and the wettability of the metal end face of the discharge tube and the plating layer of the varistor, increasing the welding area of ​​the metal end face of the discharge tube and the plating layer of the varistor, improving welding reliability, and enhancing current carrying capacity; furthermore, this composite device is easy to continuously mass-produce on automated equipment, simplifying processes, improving production efficiency, and ensuring consistent product performance indicators.

[0041] The key design feature of this invention is that by placing the first circuit protection device and the second circuit protection device on a molded electrode frame to form a composite lightning protection device structure, the lightning protection device structure can fix the first circuit protection device and the second circuit protection device, which is convenient for plug-in assembly, can be adapted to continuous batch production on automated equipment, simplifies the process, improves production efficiency, and ensures the consistency of product performance indicators; at the same time, it increases the welding area of ​​the first circuit protection device and the second circuit protection device, improves welding reliability, and enhances current carrying capacity.

[0042] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A composite lightning protection device structure, characterized in that: It includes a molded electrode frame, a first circuit protection device, and a second circuit protection device. The molded electrode frame includes a first pin, a second pin, and a common pin. The first circuit protection device and the second circuit protection device are connected in series. The first pin is connected to the upper end face of the first circuit protection device, and the second pin is connected to the lower end face of the second circuit protection device. The common pin is connected to the end face of the first circuit protection device and the second circuit protection device that are in contact with each other.

2. The composite lightning protection device structure according to claim 1, characterized in that: The common pin includes an arc-shaped contact portion and two poles integrally connected to both ends of the arc-shaped contact portion, wherein the arc-shaped contact portion and the poles are on the same plane.

3. The composite lightning protection device structure according to claim 2, characterized in that: The rear ends of the first pin and the second pin are respectively staggered vertically from the arc-shaped contact portion, forming a first accommodating area for mounting a first circuit protection device between the rear end of the first pin and the arc-shaped contact portion, and forming a second accommodating area for mounting a second circuit protection device between the rear end of the second pin and the arc-shaped contact portion.

4. The composite lightning protection device structure according to claim 3, characterized in that: Both the first circuit protection device and the second circuit protection device are varistors; one varistor is located in the first accommodating region, and the other varistor is located in the second accommodating region.

5. The composite lightning protection device structure according to claim 3, characterized in that: The first circuit protection device is a discharge tube, the second circuit protection device is a varistor, and the arc-shaped contact portion surrounds and forms a positioning space that is adapted to the outer wall of the discharge tube, and the first circuit protection device is embedded in the positioning space; The second circuit protection device is located in the second accommodating area.

6. The composite lightning protection device structure according to claim 2, characterized in that: The two pins of the common pin are test pins, which are shorter than the first pin and the second pin, and are suspended.

7. The composite lightning protection device structure according to claim 2, characterized in that: The arc-shaped contact portion is semi-circular, and the rear ends of the two pole feet surround the arc-shaped contact portion and are integrally connected to the two ends of the opening of the arc-shaped contact portion.

8. The composite lightning protection device structure according to claim 1, characterized in that: When the pins of the molded electrode holder are not cut off, the first pin, the second pin, and the common pin are integrally connected to each other.

9. The composite lightning protection device structure according to claim 2, characterized in that: The rear ends of the first and second pins are bent to correspond to the central region of the arc-shaped contact portion; the bending directions of the rear ends of the first and second pins are opposite to each other and intersect.

10. The composite lightning protection device structure according to claim 2, characterized in that: The formed electrode frame is made of tin-plated copper-clad steel wire.

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