Miniature patch type lightning protection module

Abstract

The utility model relates to the technical field of lightning protection devices, in particular to a miniature patch type lightning protection module, which comprises a base and a shell covered on the base, and further comprises an oscillating bar arranged on the base; the pressure spring is arranged on the base and is pressed between the swing rod and the base; the piezoresistor is arranged on the back surface of the base; the elastic sheet electrode abuts against the side, away from the pressure spring, of the swing rod, and the piezoresistor penetrates through the base and is welded to the elastic sheet electrode at low temperature; the remote signaling alarm mechanism is arranged on the base and connected with the swing rod in a clamped mode. According to the utility model, a driving mechanism of the pressure spring and the swing rod is adopted, remote signaling connection is synchronously disconnected when the elastic sheet electrode is tripped, a tripping alarm is quickly and accurately sent out, and the tripping device has the advantages of high response speed, high safety, small size, low cost and the like.

Description

Technical Field

[0001] This utility model relates to the technical field of surge protectors, and more specifically, to a miniature patch surge protector module. Background Technology

[0002] Surge protectors, also known as lightning arresters, are primarily used to protect against surges caused by factors such as lightning, poor grounding, inductive load switching, power system faults, and electrostatic discharge. These surges can lead to data loss, damage, or even complete destruction of electronic equipment, with lightning surges being the most destructive.

[0003] Existing surge protection methods typically involve installing surge protection devices at the front end of the equipment's power adapter. However, these devices are usually large and complex, containing components such as varistors or gas discharge tubes. This not only increases production costs but may also pose safety hazards during use, such as leakage, cracking, fire, and follow current, thus affecting their overall performance and reliability. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a miniature patch-type surge protection module, which has the advantages of fast response speed, high security, small size and low cost.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a miniature patch-type lightning protection module, comprising a base and a shell covering the base, and further comprising:

[0006] A swing arm is mounted on the base.

[0007] A compression spring is provided on the base and is pressed between the swing rod and the base;

[0008] A varistor is disposed on the back side of the base;

[0009] The spring electrode abuts against the side of the swing arm away from the compression spring, and the varistor passes through the base and is low-temperature welded to the spring electrode;

[0010] The remote alarm mechanism is mounted on the base and is engaged with the swing arm.

[0011] In one embodiment, a pivot is provided at the end of the swing arm away from the remote signaling alarm mechanism, and the swing arm is connected to the base through the pivot.

[0012] In one embodiment, the rocker arm has a protrusion on the side near the compression spring, and the compression spring is sleeved on the protrusion.

[0013] In one embodiment, the varistor includes a varistor chip, an upper electrode plate fixed on the surface of the varistor chip, and a lower electrode plate fixed on the back side of the varistor chip, wherein the upper electrode plate, the lower electrode plate, and the varistor chip are all disposed on the back side of the base;

[0014] The base has a through hole, and the upper electrode sheet is low-temperature welded to the spring electrode through the through hole.

[0015] In one embodiment, the swing arm has a beveled protrusion on the side near the spring electrode, and the bevel is on the same plane as the protruding end of the upper electrode plate.

[0016] In one embodiment, the remote signaling alarm mechanism includes a first alarm contact and a second alarm contact, both of which are mounted on the base;

[0017] A groove is provided at the end of the lever away from the pivot, and the first alarm contact is inserted into the groove;

[0018] The second alarm contact is attached to the first alarm contact;

[0019] There is a gap between the groove and the first alarm contact piece.

[0020] In one embodiment, the second alarm contact has a bend that abuts against the side of the first alarm contact.

[0021] In one embodiment, the end of the groove near the compression spring is higher than the other end.

[0022] In one embodiment, the base is provided with a first limiting plate and a second limiting plate;

[0023] The first limiting plate is disposed on the side of the compression spring away from the swing arm, and the compression spring is pressed between the swing arm and the first limiting plate;

[0024] The second limiting plate is disposed on the side of the base away from the first limiting plate, and is used to limit the range of motion of the spring electrode.

[0025] In one embodiment, the base is provided with an elastic buckle, and the outer shell is provided with a snap-fit ​​hole, wherein the elastic buckle and the snap-fit ​​hole are snap-fit ​​connected.

[0026] The aforementioned miniature patch-type surge protector module has the following beneficial effects:

[0027] Firstly, this utility model adopts a drive structure composed of a swing arm and a compression spring. When the varistor thermally collapses, the low-temperature welding point between the varistor and the spring electrode melts due to heat. The spring electrode will quickly disconnect the working circuit due to its own elastic force, and then trigger the remote signaling alarm mechanism through the swing arm, and automatically disconnect the remote signaling alarm circuit. This accurately and quickly alarms the tripping situation, improving the response speed and safety in the case of overvoltage.

[0028] Secondly, this utility model, through its structured design and SMD surface mount technology, meets the requirements for miniaturization and high-density installation of surge protection modules, facilitating modular production, thereby reducing labor costs and improving production efficiency. Its miniaturized design expands its application scenarios, allowing installation on power strips and protected terminal equipment, and meets the requirements of the IEC / EN 61643 family of standards and surge protection functions applicable to Class II and Class III tests. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the assembly relationship of this utility model;

[0030] Figure 2 This is a schematic diagram of the structure of the varistor in this utility model;

[0031] Figure 3 This is a schematic diagram of the structure of each component on the base before the tripping mechanism of this utility model;

[0032] Figure 4 This is a schematic diagram of the structure of each component on the base after the release of the present invention.

[0033] In the diagram: 1. Base; 2. Outer shell; 3. Swing rod; 301. Protrusion; 302. Angled protrusion; 303. Groove; 4. Compression spring; 5. Varistor; 501. Upper electrode plate; 502. Varistor chip; 503. Lower electrode plate; 6. Spring electrode; 7. Remote signaling alarm mechanism; 701. First alarm contact plate; 702. Second alarm contact plate; 8. Pivot; 9. First limiting plate; 10. Second limiting plate; 11. Elastic buckle; 12. Snap-fit ​​hole. Detailed Implementation

[0034] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model, and are not intended to 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 of this utility model.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, unless otherwise explicitly specified.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0039] A miniature patch-type surge protection module, such as Figure 1 and Figure 2As shown, the device includes a base 1 and a housing 2 covered on the base 1, and also includes: a swing arm 3, disposed on the base 1; a compression spring 4, disposed on the base 1 and pressed between the swing arm 3 and the base 1; a varistor 5, disposed on the back of the base 1; a spring electrode 6, abutting against the side of the swing arm 3 away from the compression spring 4, the varistor 5 passing through the base 1 and being cryogenically welded to the spring electrode 6; and a remote signaling alarm mechanism 7, disposed on the base 1 and engaged with the swing arm 3.

[0040] Specifically, the base 1 is made of high-strength insulating material to ensure safety and durability under high-voltage conditions; the outer shell 2 is made of flame-retardant material and has waterproof and dustproof functions to protect the internal components from environmental factors; the swing arm 3 is used for mechanical linkage of the spring electrode 6 and the remote signaling alarm mechanism 7; the compression spring 4 is used to provide the necessary elastic force for the swing arm 3; the varistor 5 is a high-capacitance, fast-response surface-mount varistor, responsible for sensing overvoltage and triggering the protection mechanism; the spring electrode 6 is made of a material that can move quickly and has sufficient elasticity to stretch the arc, to ensure effective stretching and extinguishing of the arc generated by the rapid disengagement of the spring electrode 6; the remote signaling alarm mechanism 7 can trigger an alarm when the swing arm 3 moves, and promptly notify the external system for maintenance.

[0041] In practical applications, the varistor 5 and the spring electrode 6 are welded by a low-temperature alloy. The low-temperature alloy weld can melt rapidly when the varistor 5 thermally collapses, thereby breaking the connection between the two.

[0042] This utility model adopts a driving structure consisting of a swing rod 3 and a compression spring 4. When the varistor 5 thermally collapses, the low-temperature welding point between the varistor 5 and the spring electrode 6 melts due to heat. The spring electrode 6 will quickly disconnect the working circuit due to its own elastic force, and then trigger the remote signaling alarm mechanism 7 through the swing rod 3, and automatically disconnect the remote signaling alarm circuit, accurately and quickly alarming the tripping situation, improving the response speed and safety of overvoltage situations.

[0043] Meanwhile, this utility model, through its structured design and SMD surface mount technology, meets the requirements for miniaturization and high-density installation of surge protection modules, facilitating modular production, thereby reducing labor costs and improving production efficiency. Its miniaturized design expands its application scenarios, allowing installation on power strips and protected terminal equipment, and meets the requirements of the IEC / EN 61643 family of standards and surge protection functions applicable to Class II and Class III tests.

[0044] Furthermore, such as Figure 3 and Figure 4 As shown, a pivot 8 is provided at the end of the swing arm 3 away from the remote signaling alarm mechanism 7, and the swing arm 3 is connected to the base 1 through the pivot 8. The design of the pivot 8 allows the swing arm 3 to rotate freely on the base 1, ensuring the flexibility and accuracy of the swing arm 3's movement.

[0045] Furthermore, the rocker arm 3 has a protrusion 301 on the side near the compression spring 4, and the compression spring 4 is sleeved on the protrusion 301.

[0046] Specifically, the inner diameter of the compression spring 4 is larger than the outer diameter of the rocker arm 3, thereby ensuring a stable connection between the compression spring 4 and the rocker arm 3, preventing the compression spring 4 from displacing under high stress, and enhancing the mechanical stability and reliability of the lightning protection module.

[0047] Furthermore, such as Figure 2 and Figure 3 As shown, the varistor 5 includes a varistor chip 502, an upper electrode plate 501 fixed on the surface of the varistor chip 502, and a lower electrode plate 503 fixed on the back of the varistor chip 502. The upper electrode plate 501, the lower electrode plate 503, and the varistor chip 502 are all mounted on the back of the base 1. A through hole is provided on the base 1, and the upper electrode plate 501 is low-temperature welded to the spring electrode 6 through the through hole.

[0048] Specifically, the upper electrode 501 and the lower electrode 503 are electrically connected to the varistor chip 502, allowing current to flow through the varistor chip 502. The through hole on the base 1 allows current to flow from the varistor 5 to the spring electrode 6 while maintaining the compactness of the structure.

[0049] Furthermore, such as Figure 3 and Figure 4 As shown, the rocker arm 3 has a sloping protrusion 302 on the side near the spring electrode 6, and its sloping surface is on the same plane as the protruding end of the upper electrode plate 501.

[0050] Specifically, when the spring electrode 6 is firmly connected to the upper electrode 501 through a low-temperature welding point, the spring electrode 6 abuts against the protruding end of the upper electrode 501 and the inclined surface of the inclined protrusion 302 respectively, so as to ensure the compactness of the structure and reduce the size of the lightning protection module.

[0051] Furthermore, the remote signaling alarm mechanism 7 includes a first alarm contact 701 and a second alarm contact 702, both of which are mounted on the base 1; a groove 303 is provided at the end of the swing arm 3 away from the pivot 8, and the first alarm contact 701 is inserted into the groove 303; the second alarm contact 702 is in contact with the first alarm contact 701.

[0052] Specifically, the first alarm contact 701 and the second alarm contact 702 are in contact in the initial state, forming a closed circuit and allowing signal flow. When the lever 3 moves and causes the first alarm contact 701 and the second alarm contact 702 to separate, the remote signaling alarm mechanism 7 will send an alarm signal to the outside world to notify external personnel to carry out maintenance.

[0053] Furthermore, there is a gap between the groove 303 and the first alarm contact 701, which can prevent accidental activation caused by slight vibration or mechanical stress.

[0054] Furthermore, the second alarm contact 702 has a bend that abuts against the side of the first alarm contact 701. The bend design allows for rapid disconnection between the alarm contacts when the lever 3 pushes the first alarm contact 701, and also reduces direct friction between the contacts.

[0055] Furthermore, the end of the groove 303 near the compression spring 4 is higher than the other end, making the first alarm contact 701 more stable when it is engaged, and ensuring that the push rod can smoothly push the first alarm contact 701.

[0056] Furthermore, such as Figure 3 and Figure 4 As shown, the base 1 is provided with a first limiting plate 9 and a second limiting plate 10; the first limiting plate 9 is located on the side of the compression spring 4 away from the swing arm 3, and the compression spring 4 is pressed between the swing arm 3 and the first limiting plate 9; the second limiting plate 10 is located on the side of the base 1 away from the first limiting plate 9, and is used to limit the movement range of the spring electrode 6.

[0057] Specifically, the first limiting plate 9, the swing rod 3, and the compression spring 4 together constitute a stable mechanical system, ensuring that the compression spring 4 works within the preset stroke and avoiding excessive compression or extension; the second limiting plate 10 can ensure the range of motion of the spring electrode 6 on the base 1, and lengthen the arc extinguishing path by increasing the separation distance between the spring electrode 6 and the varistor 5, thereby achieving the purpose of rapid arc extinguishing.

[0058] Furthermore, the base 1 is provided with an elastic buckle 11, and the outer shell 2 is provided with a snap-fit ​​hole 12, and the elastic buckle 11 and the snap-fit ​​hole 12 are snap-fit ​​connected.

[0059] Specifically, the elastic clip 11 provides sufficient holding force to ensure that the housing 2 can be firmly fixed to the base 1 in various environments, while also allowing the housing 2 to be quickly disassembled when needed, facilitating the inspection and replacement of internal components, further simplifying the module assembly process, and making it easy to install and maintain quickly.

[0060] The working principle of this utility model is as follows: Figure 3 As shown, before tripping, the spring electrode 6 and the varistor 5 are firmly connected by a low-temperature solder joint, which simultaneously restricts the movement of the lever 3. At this time, the lever 3 presses against the spring 4, ensuring that the first alarm contact 701 and the second alarm contact 702 remain connected.

[0061] like Figure 4As shown, when the varistor 5 experiences thermal collapse, the low-temperature solder joint between the spring electrode 6 and the varistor 5 melts, and the spring electrode 6 will quickly spring away due to the thermal tripping reaction. At the same time, the lever 3 is pushed by the elastic force of the compression spring 4, which in turn actuates the first alarm contact 701, causing the first alarm contact 701 to separate from the second alarm contact 702, triggering the alarm mechanism, notifying external personnel to perform maintenance, and thus protecting the circuit.

[0062] 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 this 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 miniature patch-type surge protection module, comprising a base and a housing disposed on the base, characterized in that, Also includes: The swing arm is mounted on the base. A compression spring is provided on the base and pressed between the swing rod and the base; A varistor is disposed on the back side of the base; The spring electrode abuts against the side of the swing arm away from the compression spring, and the varistor passes through the base and is low-temperature welded to the spring electrode; The remote alarm mechanism is mounted on the base and is engaged with the swing arm.

2. The miniature patch-type surge protection module according to claim 1, characterized in that: The end of the swing arm away from the remote signaling alarm mechanism is provided with a pivot, and the swing arm is connected to the base through the pivot.

3. A miniature patch-type surge protection module according to claim 1, characterized in that: The rocker arm has a protrusion on the side near the compression spring, and the compression spring is sleeved on the protrusion.

4. A miniature patch-type surge protection module according to claim 1, characterized in that: The varistor includes a varistor chip, an upper electrode plate fixed on the surface of the varistor chip, and a lower electrode plate fixed on the back of the varistor chip. The upper electrode plate, the lower electrode plate, and the varistor chip are all mounted on the back of the base. The base has a through hole, and the upper electrode sheet is low-temperature welded to the spring electrode through the through hole.

5. A miniature patch-type surge protection module according to claim 4, characterized in that: The rocker arm has a sloping protrusion on the side near the spring electrode, and the sloping surface is on the same plane as the protruding end of the upper electrode plate.

6. A miniature patch-type surge protection module according to claim 2, characterized in that: The remote alarm mechanism includes a first alarm contact and a second alarm contact, both of which are mounted on the base; A groove is provided at the end of the lever away from the pivot, and the first alarm contact is inserted into the groove; The second alarm contact is attached to the first alarm contact; There is a gap between the groove and the first alarm contact piece.

7. A miniature patch-type surge protection module according to claim 6, characterized in that: The second alarm contact has a bend that abuts against the side of the first alarm contact.

8. A miniature patch-type surge protection module according to claim 6, characterized in that: The end of the groove near the compression spring is higher than the other end.

9. A miniature patch-type surge protection module according to claim 1, characterized in that: The base is provided with a first limiting plate and a second limiting plate; The first limiting plate is disposed on the side of the compression spring away from the swing arm, and the compression spring is pressed between the swing arm and the first limiting plate; The second limiting plate is disposed on the side of the base away from the first limiting plate, and is used to limit the range of motion of the spring electrode.

10. A miniature patch-type surge protection module according to claim 1, characterized in that: The base is provided with an elastic buckle, and the outer shell is provided with a snap-fit ​​hole. The elastic buckle and the snap-fit ​​hole are snap-fitted together.

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