A voltage protection module and surge protector

Abstract

The utility model relates to a kind of voltage protection module and surge protector, the voltage protection module includes module shell and base, and pressure-sensitive resistor is equipped in module shell, and pressure-sensitive resistor includes first pin, and the one end of first pin away from pressure-sensitive resistor is integrally formed with conductive electrode, and conductive electrode extends out the rear side of the shell, and conductive seat with clamping mechanism is arranged on base, and conductive electrode is inserted into clamping mechanism, and is electrically connected with conductive seat.The voltage protection module of the utility model has the module shell and base of convenient installation, and the first pin of pressure-sensitive resistor is with conductive electrode, and the electrical connection of pressure-sensitive resistor and conductive seat can be completed without welding, to form reliable lightning current discharge passage, simplify assembly process, and reduce production cost.

Description

Technical Field

[0001] This utility model relates to the field of surge protector technology, and in particular to a voltage protection module and a surge protector. Background Technology

[0002] Surge protectors (SPDs) are core devices for lightning and overvoltage protection of electronic equipment. Their function is to quickly discharge the energy of transient overvoltages such as lightning and switching overvoltages, limiting the voltage within the equipment's tolerance range and preventing equipment damage. Their core principle is based on the dynamic impedance characteristics of nonlinear components.

[0003] Existing surge protectors typically require low-temperature soldering of the conductors on the base to the varistor during electrical connection. This adds an extra assembly step and soldering process to the surge protector module assembly. Furthermore, the high soldering temperature necessitates a relatively long cooling period to room temperature or to reach the temperature limit required for the next assembly step, significantly reducing production efficiency and increasing production costs. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an improved voltage protection module for surge protectors.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A voltage protection module includes a module housing and a base. The module housing is mounted on the base, and a varistor is disposed inside the module housing. The varistor includes a first pin and an integral conductive electrode. A conductive seat with conductivity is disposed on the base, and a clamping mechanism is disposed on the conductive seat. The conductive electrode is inserted into the clamping mechanism and electrically connected to the conductive seat.

[0007] Furthermore, the first pin of the varistor includes a pin body, a lead-out portion, and a conductive electrode. The pin body is attached to the surface of the varistor. The lead-out portion is connected to the pin body and extends outward from the edge of the varistor. The conductive electrode includes an electrode plate one and an electrode plate two stacked on top of each other. The two opposite sides of the electrode plate one are respectively connected to the lead-out portion and the electrode plate two.

[0008] Furthermore, the pin body, lead-out portion, and conductive electrode are integrally structured, and electrode one and electrode two are made by a flanging and folding process, forming a bending portion between electrode one and lead-out portion.

[0009] Furthermore, the conductive seat clamping mechanism includes a set of symmetrically arranged elastic clamping members; each elastic clamping member includes a connecting part and a pair of elastic clips, the elastic clips are symmetrically arranged at both ends of the connecting part, each elastic clip has a centrally curved arc-shaped part, and the conductive electrode is inserted between the two elastic clamping members.

[0010] Furthermore, the conductive base also includes a mounting component. The conductive base, clamping mechanism, and mounting component are an integral structure made of copper material; the base is provided with terminals and wiring screws.

[0011] The mounting component includes two plates, Plate 1 and Plate 2, located on the side of the conductive base away from the clamping mechanism and arranged vertically in parallel. Plate 1 has a mounting hole, and Plate 2 has two stops on its outer side. The terminal is a hollow cylindrical structure that is fitted onto the mounting component and can slide vertically relative to Plate 2. The wiring screw passes through the mounting hole on Plate 1 and is threadedly connected to the terminal.

[0012] Furthermore, the base includes a top seat, side seats, and a base, forming a three-sided enclosure structure for the mounting module housing;

[0013] The surface of the module housing that mates with the side seat of the base is provided with a boss, and the inner wall of the side seat is provided with a positioning groove that matches the boss.

[0014] The surface of the module shell that connects with the top seat and base of the base is provided with several guide grooves, and the inner wall of the top seat and base is provided with ribs that are adapted to the guide grooves.

[0015] A surge protector, characterized in that it is equipped with the voltage protection module mentioned above.

[0016] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0017] (1) The present invention provides a voltage protection module with a convenient module shell and base. The first pin of the varistor is provided with an integral conductive electrode. The conductive electrode is inserted between the elastic clamping parts of the conductive base. The electrical connection between the varistor and the conductive base can be completed without welding, forming a reliable lightning current discharge path, simplifying the assembly process and reducing production costs.

[0018] (2) The voltage protection module designed in this utility model has an integrated conductive electrode design for the pins of the varistor. Compared with existing products, this reduces the number of parts, eliminates the need for welding during assembly, simplifies the assembly process, and improves production efficiency, which has important practical significance.

[0019] (3) The voltage protection module designed in this utility model triggers remote signaling output by setting a fault indicator rod and low-temperature soldering of the second pin of the varistor, thereby increasing the remote signaling automatic alarm function. Attached Figure Description

[0020] Figure 1 A schematic diagram of the structure of the device according to an embodiment of the present invention is shown;

[0021] Figure 2 It shows Figure 1 A schematic diagram of the structure of the middle module shell and its mounting components;

[0022] Figure 3 A three-dimensional view of the varistor is shown;

[0023] Figure 4 It shows Figure 3 Top view of a medium-sized varistor;

[0024] Figure 5 It shows Figure 4 A schematic diagram of the structure of the first pin of the medium-voltage varistor;

[0025] Figure 6 for Figure 5 Front view;

[0026] Figure 7 for Figure 5 Middle left view;

[0027] Figure 8 It shows Figure 1 A schematic diagram of the structure of the central base and the components mounted on it;

[0028] Figure 9 A schematic diagram of the conductive base is shown;

[0029] Figure 10 A perspective view showing the connection between the conductive base and the terminal block and terminal screw is provided.

[0030] Figure 11 A perspective view showing the mating and disassembly states of two pairs of module housings and bases is provided.

[0031] Marked in the attached diagram:

[0032] 1. Module housing; 11. Boss; 12. Guide groove; 2. Base; 21. Positioning groove; 22. Rib; 23. Terminal post; 24. Terminal screw; 3. Varistor; 31. Second pin; 32. First pin; 321. Pin body; 322. Lead-out part; 323. Conductive electrode; 3231. Electrode one; 3232. Electrode two; 324. Bending part; 4. Fault indicator rod; 41. Spring; 5. Conductive base; 51. Clamping mechanism; 511. Connecting part; 512. Elastic clip; 52. Mounting part; 521. Plate one; 5211. Mounting hole; 522. Plate two; 5221. Stop; 6. Remote signaling circuit board; 61. Micro switch; 611. Metal spring; 7. Conductive connector; 71. Conductive cable. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the device proposed by this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of this utility model will become clearer according to the following description. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, only used to conveniently and clearly assist in illustrating the purpose of the embodiments of this utility model. Please refer to the accompanying drawings to make the objectives, features, and advantages of this utility model more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only used to complement the content disclosed in the specification, for those skilled in the art to understand and read, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0034] Example 1

[0035] Figure 1 As shown, this embodiment proposes a voltage protection module, including a module housing 1 and a base 2. The module housing 1 is mounted on the base 2. A varistor 3 and a fault indicator rod 4 are disposed inside the module housing 1. A conductive base 5, a remote signaling circuit board 6, a terminal block 23 and a wiring screw 24 are disposed on the base 2. The remote signaling circuit board 6 is provided with a micro switch 61 with a metal spring 611.

[0036] like Figures 2 to 6 As shown, in this embodiment, a varistor 3 is installed in the housing 1 of the mounting module. The varistor 3 has a second pin 31 and a first pin 32. The first pin 32 is provided with a conductive electrode 323 having a preset shape and size. The first pin 32 includes a pin body 321, a lead-out portion 322, and a conductive electrode 323. The pin body 321 is attached to the surface of the varistor 3. The lead-out portion 322 is connected to the pin body 321 and extends outward from the edge of the varistor 3. The conductive electrode 323 includes an electrode plate 3231 and an electrode plate 3232 stacked on top of each other. The two opposite sides of the electrode plate 3231 are respectively connected to the lead-out portion 322 and the electrode plate 3232. The pin body 321, lead-out portion 322 and conductive electrode 323 are integrated into one structure. The conductive electrode 323 is integrally formed at the end of the first pin 32 away from the varistor 3. The first electrode 3231 and the second electrode 3232 are made by a flanging and folding process, and a bending portion 324 is formed between the first electrode 3231 and the lead-out portion 322.

[0037] Example of a varistor 3: The thickness of the lead body 321 and the lead-out portion 322 of the varistor 3 is x, for example, x = 0.6 mm. A folding process is used at the conductive electrode 323 to increase the thickness y of the conductive electrode 323 to twice x, i.e., y = 2x = 1.2 mm. Figure 7 As shown, it is then cut into the shape of the required conductive electrode 323. Using this method, an integrated varistor pin with conductive electrode 323 is made, which can be directly assembled without soldering.

[0038] like Figures 8 to 10 As shown, the conductive base 5 is equipped with a clamping mechanism 51 and a mounting component 52, and is conductive. In this embodiment, the conductive base 5 adopts an integral copper base structure. The clamping mechanism 51 includes a set of symmetrically arranged elastic clamping components. The conductive electrode 323 is inserted into the gap between the elastic clamping components and fixed to the conductive base 5. The elastic clamping component includes a connecting part 511 and a pair of elastic clips 512. The elastic clips 512 are symmetrically arranged at both ends of the connecting part 511, and each elastic clip 512 has a centrally curved arc-shaped part. The conductive base 5 is mounted on the base 2 and plays a role in clamping and conducting electricity for the conductive electrode 323 inserted into the gap between the two elastic clamping components. It is easy to install, the conductive base 5 has a stable structure and is not easily deformed, and the connection between the conductive electrode 323 and the elastic clamping components is reliable.

[0039] The base 2 is provided with a terminal 23 and a terminal nut 24 for connecting the conductive base 5. In this embodiment, the mounting component 52 includes a first plate 521 and a second plate 522 located on the side of the conductive base 5 away from the clamping mechanism 51 and arranged vertically in parallel. The first plate 521 has a mounting hole 5211, and the second plate 522 has two stops 5221 on its outer side. The terminal 23 is a hollow cylindrical structure with a rectangular cross-section. The terminal 23 is sleeved on the second plate 522 and limited by the stops 5221, and can slide up and down relative to the second plate 522. The terminal nut 24 passes through the mounting hole 5211 on the first plate 521 and is threadedly connected to the terminal 23 to realize the electrical connection between the conductive base 5 and the terminal 23. The terminal screw 24 and the terminal 23 are connected to the external circuit, serving as the input terminal of the protection device and forming a reliable lightning current discharge path.

[0040] like Figure 11 As shown, the surface of the module housing 1 that mates with the base 2 is provided with a boss 11, and the corresponding surface of the base 2 is provided with a positioning groove 21 that matches the boss 11. The base 2 includes a top seat, a side seat, and a base, forming a three-sided enclosure structure for mounting the module housing 1. The positioning groove 21 is provided on the inner wall of the side seat, and the inner walls of the top seat and the base are provided with several ribs 22. The corresponding surface of the module housing 1 is provided with a guide groove 12 that matches the ribs 22. This allows for quick and precise installation of the module housing 1 and the base 2. A vertical through hole is provided on the side seat, and the position of the vertical through hole is directly opposite the gap between the two elastic clamping members.

[0041] In this invention, the fault indicator rod 4 is installed inside the module housing 1. The side wall of the fault indicator rod 4 and the second pin 31 are fixed together by low-temperature soldering. A pre-compressed spring 41 is provided at the front end of the fault indicator rod 4, and the end extends out of the module housing 1 to press against the metal spring 611. Figure 2 As shown, the module housing 1 contains a conductive connector 7 and a conductive cable 71. The conductive connector 7 is fixed to the module housing 1 and is an integral structure with the same shape and thickness as the conductive electrode 323 of the first pin 32. The second pin 31 is electrically connected via the conductive cable 71. Figure 8 As shown, another conductive seat 5 is symmetrically arranged inside the base 2, along with corresponding terminals 23 and terminals 24. The conductive seat 5 is connected to the conductive connector 7.

[0042] The principle of remote signaling output of surge protector is as follows:

[0043] When the voltage protection module is intact, the indicator rod of the voltage protection module is fixed in a limited position by the low temperature solder joint, and one end of the indicator rod presses against the metal spring 611 of the micro switch 61, so that the micro switch 61 has no signal output.

[0044] When the voltage protection module is damaged, the low-temperature solder joints of the voltage protection module melt and no longer have a fixing function. The indicator rod is lifted by the pre-compression spring 41, and at the same time, the metal spring 611 of the micro switch 61 pressed by the indicator rod is released. The state of the micro switch 61 changes, thereby outputting an alarm signal.

[0045] Example 2

[0046] This embodiment proposes a surge protector configured with the voltage protection module as described in Embodiment 1.

[0047] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A voltage protection module, characterized in that: The module includes a housing (1) and a base (2). The housing (1) is mounted on the base (2). A varistor (3) is provided inside the housing (1). The varistor (3) includes a first pin (32). A conductive electrode (323) is integrally formed at the end of the first pin (32) away from the varistor (3). The conductive electrode (323) extends out of the rear side of the housing (1). A conductive seat (5) with conductivity is provided on the base (2). A clamping mechanism (51) is provided at the front end of the conductive seat (5). The conductive electrode (323) is inserted into the clamping mechanism (51) and electrically connected to the conductive seat (5).

2. The voltage protection module as described in claim 1, characterized in that: The first pin (32) of the varistor (3) includes a pin body (321), a lead-out portion (322) and a conductive electrode (323). The pin body (321) is attached to the surface of the varistor (3). The lead-out portion (322) is connected to the pin body (321) and extends outward from the edge of the varistor (3). The conductive electrode (323) includes a first electrode plate (3231) and a second electrode plate (3232) stacked on top of each other. The two opposite sides of the first electrode plate (3231) are respectively connected to the lead-out portion (322) and the second electrode plate (3232).

3. The voltage protection module as described in claim 2, characterized in that: The pin body (321), lead-out portion (322) and conductive electrode (323) are an integral structure. Electrode one (3231) and electrode two (3232) are made by a flanging and folding process, and a bending portion (324) is formed between electrode one (3231) and lead-out portion (322).

4. The voltage protection module as described in claim 1, characterized in that: The clamping mechanism (51) includes a set of symmetrically arranged elastic clamping members; the elastic clamping members include a connecting part (511) and a pair of elastic clips (512), the elastic clips (512) are symmetrically arranged at both ends of the connecting part (511), each elastic clip (512) is provided with a centrally curved arc-shaped part, and the conductive electrode (323) is inserted between the two elastic clamping members.

5. The voltage protection module as described in claim 1, characterized in that: The conductive base (5) also includes a mounting component (52). The conductive base (5), the clamping mechanism (51), and the mounting component (52) are an integral structure made of copper material. A terminal post (23) and a terminal screw (24) are provided on the base (2). The mounting component (52) includes a first plate (521) and a second plate (522) located on the side of the conductive base (5) away from the clamping mechanism (51) and arranged vertically and parallel to each other. The first plate (521) has a mounting hole (5211), and the second plate (522) has two stops (5221) on its outer side. The terminal (23) is a hollow cylindrical structure that is fitted onto the mounting component (52) and can slide up and down relative to the second plate (522). The wiring screw (24) passes through the mounting hole (5211) on the first plate (521) and is threadedly connected to the terminal (23).

6. The voltage protection module as described in claim 1, characterized in that: The base (2) includes a top seat, a side seat and a base, which together form a three-sided enclosure structure of the mounting module housing (1); The module housing (1) has a boss (11) on the surface where it meets the side seat of the base (2), and the inner wall of the side seat has a positioning groove (21) that matches the boss (11). The surface of the module shell (1) that connects with the top seat and base of the base (2) is provided with several guide grooves (12), and the inner wall of the top seat and base is provided with ribs (22) that are adapted to the guide grooves (12).

7. A surge protector, characterized in that: Configure the voltage protection module as described in any one of claims 1-6.

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