Lightning protection module of surge protection device and surge protection device
By adopting a trip structure driven by parallel contact points and elastic parts in the surge protector, the problem of strength limitation of the trip structure is solved, effective protection of large currents is achieved, and lightning protection is improved.
Patent Information
- Application Number
- CN202422409854.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-09-30
AI Technical Summary
Due to the limitation of the strength of the tripping structure, the lightning protection module of the existing surge protector cannot withstand excessive surge current, resulting in poor protection effect.
The tripping structure is adopted with parallel contact point design and elastic parts drive, and the contact point solder melts and diverts a large current, and the elastic parts drive the tripping plate to move and disconnect the circuit to achieve high current protection.
The lightning protection module has improved the load-bearing capacity of the surge current, thereby improving the lightning protection effect of the surge protector, able to withstand greater surge current, and ensuring the safety of the equipment.
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Figure CN223273855U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of electrical equipment, and in particular to a lightning protection module of a surge protector and a surge protector. Background Art
[0002] Surges generated during lightning storms or when overvoltage occurs in large electrical appliances can cause significant damage to electrical equipment. In order to limit the surges and protect the electrical equipment, a surge protection device (SPD) is usually required to be connected to the circuit.
[0003] In existing technology, the lightning protection module of a surge protector generally uses a tripping protection structure, which disconnects the circuit to provide protection when a surge occurs. However, when using this structure, the tripping structure needs to withstand the entire surge current. Due to the strength limitations of the tripping structure itself, the surge current it can withstand is limited. If the surge current is too large, the tripping structure is easily damaged, which in turn affects the protection effectiveness of the surge protector. Utility Model Content
[0004] The purpose of this application is to provide a lightning protection module for a surge protector and a surge protector, which can solve the problem in the prior art that the lightning protection module of the surge protector can only carry a limited surge current due to its own strength limitation, thereby affecting the protection effect.
[0005] In order to achieve the above-mentioned purpose, according to the first aspect of the present application, an embodiment of the present application provides a lightning protection module for a surge protector, which includes a shell, a pressure-sensitive chip, a left pin and a right pin, and a tripping structure. A accommodating cavity is formed inside the shell. The pressure-sensitive chip is arranged in the accommodating cavity, and the pressure-sensitive chip leads to a first pin and a second pin. The left pin and the right pin are used to connect the inside and outside of the accommodating cavity, and the first pin and the second pin are respectively connected to the left pin and the right pin. The tripping structure includes a tripping piece and an elastic member, the tripping piece is slidably arranged in the accommodating cavity and can contact and conduct with the second pin, and the tripping piece is connected and conducted with the right pin, and the elastic member is used to drive the tripping piece to move to separate from the second pin. Among them, there are at least two contact points on the tripping piece, and at least two are correspondingly arranged on the second pin. The two contact points are arranged in parallel and are respectively connected to the second pin, and the contact points and the second pin are welded by low-melting-point solder.
[0006] Based on the above-mentioned embodiment of the present application, when the surge protector is in use, the circuit is connected in sequence through the left pin, the first pin, the pressure-sensitive chip, the second pin, the trip structure and the right pin. When the current flowing through the surge protector is too large under conditions such as thunderstorms, the temperature of the connection position between the contact point and the second pin increases when a large current passes through. The solder at the connection position between the two melts due to the temperature increase, causing the contact point to be detached from the second pin. Subsequently, the elastic member drives the trip plate to move under the action of its own elasticity, so that the contact point is completely detached from the second pin, thereby disconnecting the circuit and achieving lightning protection for the surge protector. In this process, by providing at least two contact points, and by providing the two contact points in parallel, the surge current passing through is shunted, so that the trip structure can carry a larger surge current, thereby improving the protection effect of the lightning protection module for large currents.
[0007] In some embodiments, the elastic member is configured as a spring, one end of the spring being connected to a side of the trip plate facing away from the second pin, and the other end of the spring being connected to the inner wall of the housing in a direction away from the second pin. When the contact point is welded to the second pin, the spring is in a stretched state.
[0008] Based on the above-mentioned embodiments of the present application, the elastic member is specifically set to a spring. When the contact point and the second pin are welded, the spring is stretched. When the solder at the connection position between the contact point and the second pin melts, the spring pulls the trip piece to move during recovery, so that the contact point and the second pin are completely disengaged and tripped, thereby realizing lightning protection for the surge protector.
[0009] In some embodiments, a connection hole is provided on the tripping piece, a connection column is provided on the inner wall of the shell, and hooks are provided at both ends of the spring, and the hooks are respectively connected to the connection hole and the connection column.
[0010] Based on the above-mentioned embodiments of the present application, by providing a connecting hole and a connecting column, the connection and fixation of the spring to the trip plate and the inner wall of the shell are facilitated.
[0011] In some embodiments, the lightning protection module further includes a guide structure, the guide structure includes a guide member, the tripping piece can slide along an extension direction of the guide member, and the extension direction of the guide member is consistent with the direction of contraction or extension of the elastic member.
[0012] Based on the above-mentioned embodiments of the present application, by providing a guide member, the movement of the tripping piece can be guided during the tripping process, making the tripping process more accurate and controllable.
[0013] In some embodiments, the guide member is configured as a guide rib, the guide rib is disposed on the inner wall of the accommodating cavity, and the guide rib extends in a direction away from the second pin. A snap-fit groove is formed on the trip plate, and the guide rib is snap-fitted into the snap-fit groove.
[0014] Based on the above embodiments of the present application, by specifically setting the guide member as a guide rib, the guide rib is directly set on the inner wall of the accommodating cavity, and a corresponding clamping groove is set on the tripping piece, thereby facilitating the fixed guidance between the guide rib and the tripping piece.
[0015] In some embodiments, at least two guide ribs are provided, and the tripping piece is provided with corresponding snap-fit grooves to cooperate with the guide ribs.
[0016] Based on the above-mentioned embodiments of the present application, at least two guide ribs are provided to simultaneously guide and limit the tripping piece, thereby making the tripping process of the tripping piece smoother.
[0017] In some embodiments, the trip plate includes a connecting portion and a conducting portion, wherein the connecting portion is connected to the conducting portion, the contact point is provided on the connecting portion, and the engaging groove is provided on the conducting portion. The plane where the connecting portion is located is perpendicular to the direction of movement of the trip plate, and the plane where the conducting portion is located is parallel to the direction of movement of the trip plate.
[0018] Based on the above-described embodiments of the present application, the trip plate is specifically divided into a connecting portion and a conducting portion. The connecting portion is used to provide a contact point to facilitate connection and conduction between the trip plate and the second pin. The provision of the conducting portion not only facilitates the positional fixation between the trip plate and the guide member, but also increases the area of the trip plate itself, thereby increasing the current-carrying area, allowing the trip plate to withstand greater surge currents and ensuring the stability and safety of the trip structure.
[0019] In some embodiments, an indicator hole is opened on the shell, and an indicator surface is provided in the shell opposite to the indicator hole. When the trip piece moves, it can at least partially cover the indicator surface, and the indicator surface and the trip piece are set to different colors.
[0020] Based on the above-mentioned embodiments of the present application, by providing an indicator hole, the indicator surface inside the shell can be seen through the indicator hole, and after the tripping is completed, the tripping piece at least partially blocks the indicator surface, and the tripping piece and the indicator surface are set to different colors. At this time, the color change can be seen through the indicator hole, so that it can be determined through the indicator hole whether the tripping process is completed.
[0021] In some embodiments, the first pin is connected to the left pin by welding, and the second pin is indirectly connected to the right pin via a tripping structure.
[0022] Based on the above-mentioned embodiments of the present application, the first pin and the second pin of the pressure-sensitive chip are connected to the left pin and the right pin respectively, thereby connecting the surge protector to the circuit and connecting the tripping structure to achieve lightning protection.
[0023] According to a second aspect of the present application, a surge protector is provided. The surge protector includes a protective shell and the lightning protection module of the surge protector described above, wherein the lightning protection module is disposed in the protective shell.
[0024] Based on the above-mentioned embodiments of the present application, the surge protector provided by the present application includes the lightning protection module of the above-mentioned surge protector, so that current can be diverted by adding a parallel structure at the tripping structure position, so that the tripping structure position can withstand a larger surge current, thereby improving the lightning protection effect of the surge protector.
[0025] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the following detailed description, they are used to explain the present application but do not constitute a limitation of the present application. In the accompanying drawings:
[0027] Figure 1 Schematic diagram of the structure of the lightning protection module of the surge protector provided in the embodiment of the present application.
[0028] Figure 2 It is a structural schematic diagram of the varistor chip in the lightning protection module of the surge protector provided in an embodiment of the present application.
[0029] Figure 3 This is a schematic structural diagram of the lightning protection module of the surge protector provided in an embodiment of the present application before tripping.
[0030] Figure 4 This is a schematic diagram of the structure of the lightning protection module of the surge protector provided in an embodiment of the present application after tripping.
[0031] Description of Reference Numerals
[0032] 1. Shell; 11. Accommodating cavity; 2. Pressure-sensitive chip; 21. First pin; 22. Second pin; 3. Left pin; 31. Right pin; 4. Trip structure; 41. Trip piece; 411. Connecting part; 412. Conducting part; 42. Elastic part; 43. Contact point; 44. Connecting hole; 45. Connecting column; 5. Guide structure; 51. Guide part; 6. Indicator hole. DETAILED DESCRIPTION
[0033] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.
[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.
[0035] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without making any creative efforts shall fall within the scope of protection of the present application.
[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.
[0037] In the description of this application, it should be noted that, unless otherwise stated, the terms "inner" and "outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended solely to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" and the like are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0038] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.
[0039] Surges generated during lightning storms or when overvoltage occurs in large electrical appliances can cause significant damage to electrical equipment. In order to limit the surges and protect the electrical equipment, a surge protection device (SPD) is usually required to be connected to the circuit.
[0040] In existing technology, the lightning protection module of a surge protector generally uses a tripping protection structure, which disconnects the circuit to provide protection when a surge occurs. However, when using this structure, the tripping structure needs to withstand the entire surge current. Due to the strength limitations of the tripping structure itself, the surge current it can withstand is limited. In this case, the tripping structure can generally only withstand surge currents of 65kA or less. Excessive surge currents can easily damage the tripping structure, thereby compromising the protective effectiveness of the surge protector.
[0041] In order to solve the above problems in the prior art, according to the first aspect of the present application, an embodiment of the present application provides a lightning protection module for a surge protector, referring to Figures 1 to 3 As shown in the figure, the lightning protection module includes a shell 1, a pressure-sensitive chip 2, a left pin 3 and a right pin 31, and a tripping structure 4. A accommodating cavity 11 is formed inside the shell 1. The pressure-sensitive chip 2 is arranged in the accommodating cavity 11, and the pressure-sensitive chip 2 has a first pin 21 and a second pin 22. The left pin 3 and the right pin 31 are used to connect the inside and outside of the accommodating cavity 11, and the first pin 21 and the second pin 22 are respectively connected to the left pin 3 and the right pin 31. The tripping structure 4 includes a tripping piece 41 and an elastic member 42. The tripping piece 41 is slidably arranged in the accommodating cavity 11 and can be in contact with the second pin 22 for conduction, and the tripping piece 41 is connected to the right pin 31 for conduction, and the elastic member 42 is used to drive the tripping piece 41 to move to separate from the second pin 22. The tripping piece 41 has at least two contact points 43 , and the second pin 22 is provided with at least two corresponding ones. The two contact points 43 are provided in parallel and are respectively connected to the second pin 22 . The contact points 43 and the second pin 22 are welded by low-melting-point solder.
[0042] Based on the above-mentioned embodiment of the present application, when the surge protector is in use, the circuit is connected in sequence through the left pin 3, the first pin 21, the pressure-sensitive chip 2, the second pin 22, the trip structure 4 and the right pin 31. When the current flowing through the surge protector is too large under conditions such as thunderstorms, the connection position of the contact point 43 and the second pin 22 heats up when a large current passes through, and the solder at the connection position between the two melts due to the temperature increase, thereby causing the contact point 43 to be detached from the second pin 22. Subsequently, the elastic member 42 drives the trip plate 41 to move under its own elastic action, so that the contact point 43 is completely detached from the second pin 22, thereby disconnecting the circuit and achieving lightning protection for the surge protector. In this process, by providing at least two contact points 43 and setting the two contact points 43 in parallel, the surge current passing through is shunted, so that the trip structure 4 can carry a larger surge current, thereby improving the protection effect of the lightning protection module for large currents.
[0043] Specifically, when the surge protector is used, it is connected to the circuit in parallel with the device to be protected. At this time, the non-volt-ampere characteristics of the pressure-sensitive chip 2 are utilized. When the circuit is working normally, the voltage on the pressure-sensitive chip 2 is lower than the threshold. At this time, the current flowing through the pressure-sensitive chip 2 is very small. At this time, the pressure-sensitive chip 2 can be regarded as a high-resistance resistor. When a surge occurs, the voltage applied to the pressure-sensitive chip 2 is greater than the threshold. At this time, the current flowing through the pressure-sensitive chip 2 surges. The circuit where the pressure-sensitive chip 2 is located can be directly regarded as a path, thereby shunting the surge current. The shunting is performed by grounding and other forms to protect the device to be protected. When the surge current passing through the surge protector is too large, it may cause damage to the surge protector itself. At this time, a lightning protection module needs to be set for protection.
[0044] Furthermore, by configuring the lightning protection module, the surge current range that the tripping structure 4 can withstand can be expanded, and generally the surge current range that can be carried can be expanded to 80 kA.
[0045] In addition, it should be noted that in the present application, the left pin 3 and the right pin 31 are used to connect the components inside the accommodating cavity 11 to the outside. In this process, the specific structure of the left pin 3 and the right pin 31 can be set to any suitable structure. For example, the left pin 3 and the right pin 31 can be set to threaded terminals, which are threadedly connected to the housing 1 and at least partially penetrate the housing 1 for connection. The specific configuration can be selected based on factors such as wiring requirements, and this application does not impose specific restrictions on this.
[0046] In the present application, the structure of the elastic member 42 and its connection method can be selected in any appropriate manner, and the present application does not impose any specific restrictions on this.
[0047] refer to Figure 3 and Figure 4 As shown in FIG, in an exemplary embodiment provided herein, the elastic member 42 is configured as a spring. One end of the spring is connected to the side of the trip plate 41 facing away from the second pin 22, and the other end of the spring is connected to the inner wall of the housing 1 in a direction away from the second pin 22. When the contact point 43 is welded to the second pin 22, the spring is in a stretched state and hooked.
[0048] Based on the above-mentioned embodiment of the present application, the elastic member 42 is configured as a spring, specifically a tension spring structure. When the contact point 43 is welded and connected to the second pin 22, the spring is in a stretched state, and the two ends of the spring are respectively connected to the trip piece 41 and the inner wall of the shell 1.
[0049] When an overvoltage occurs and a protective trip is required, the solder at the connection position between the contact point 43 and the second pin 22 melts, thereby disconnecting the contact point 43 from the second pin 22. The spring then contracts and pulls the tripping piece 41 completely apart from the second pin 22, achieving rapid and stable tripping, while stabilizing the tripping piece 41 in a fixed position after tripping.
[0050] Alternatively, in some other embodiments of the present application, a spring may be provided on the side of the trip plate 41 facing the second pin 22. In this case, the spring is compressed when the contact point 43 is welded to the second pin 22. Subsequently, when the contact point 43 is separated from the second pin 22, the spring extends, pushing the trip plate 41 away from the second pin 22, completely separating the two.
[0051] Furthermore, in some embodiments of the present application, a connection hole 44 may be provided on the tripping piece 41, a connection column 45 may be provided on the inner wall of the shell 1, and hooks are provided at both ends of the spring, which are respectively connected to the connection hole 44 and the connection column 45.
[0052] Based on the above-mentioned embodiment of the present application, the connection hole 44 and the connection column 45 are provided to facilitate the connection and fixation of the spring to the trip plate 41 and the inner wall of the housing 1. The hook is directly hooked to the connection hole 44 and the connection column 45. At the same time, the spring will rotate slightly during the extension and contraction process. The provision of the hook can leave a certain degree of freedom while connecting the spring, and also facilitates subsequent replacement and maintenance.
[0053] In other embodiments of the present application, the spring, the trip plate 41, and the housing 1 may be connected in other ways, such as welding the spring directly to the trip plate 41 or other structures. The appropriate connection method may be selected based on factors such as strength requirements, and the present application does not impose any specific restrictions on this.
[0054] In addition, in the present application, the elastic member 42 can also be set to any other suitable elastic material, such as a rubber band. When the elastic member 42 is set to a spring, the spring can stabilize the tripping piece 41 in a fixed position after tripping due to its own strength, and setting the elastic member 42 to a rubber band can reduce space occupancy. The specific selection can be made according to actual usage requirements, and the present application does not impose any specific restrictions on this.
[0055] refer to Figure 3 and Figure 4 As shown in , in some embodiments of the present application, the lightning protection module also includes a guide structure 5, the guide structure 5 includes a guide member 51, the tripping piece 41 can slide along the extension direction of the guide member 51, and the extension direction of the guide member 51 is consistent with the direction of contraction or extension of the elastic member 42.
[0056] Based on the above-mentioned embodiments of the present application, by providing the guide member 51 , the movement of the tripping piece 41 can be guided during the tripping process, making the tripping process more accurate and controllable.
[0057] Furthermore, in the present application, the guide member 51 can be configured as any suitable structure.
[0058] refer to Figure 3 As shown in , in an exemplary embodiment provided in the present application, the guide member 51 can be configured as a guide rib, which is provided on the inner wall of the accommodating cavity 11, and the guide rib extends in a direction away from the second pin 22. A snap-fit groove is formed on the tripping piece 41, and the guide rib is snap-fitted into the snap-fit groove.
[0059] Based on the above-mentioned embodiments of the present application, by specifically setting the guide member 51 as a guide rib, the guide rib is directly set on the inner wall of the accommodating cavity 11, and a corresponding clamping groove is set on the tripping piece 41, thereby facilitating the fixed guidance between the guide rib and the tripping piece 41.
[0060] Specifically, by setting the guide member 51 as a guide rib, the guide rib is integrally formed with the housing 1 by injection molding or other means during the production process.
[0061] In addition, in order to further enhance the limiting effect between the guide rib and the tripping piece 41, the guide rib cross section can be set to a T-shaped structure, and the engaging groove cross section can be correspondingly set to a T-shaped structure, thereby enhancing the engaging limiting effect.
[0062] Alternatively, in some other embodiments of the present application, the guide member 51 can be configured as a guide post, with both ends of the guide post directly fixedly connected to the inner wall of the housing 1. The trip plate 41 can be provided with a guide hole, through which the guide post passes to guide the trip plate 41. Furthermore, if the elastic member 42 is configured as a spring, the spring can be mounted on the outside of the guide post to further align the spring's contraction or extension direction with the guiding direction of the guide member 51, thereby facilitating a smoother tripping process.
[0063] Furthermore, in some embodiments of the present application, at least two guide ribs or guide posts may be provided, and corresponding positions on the tripping piece 41 may be provided with engaging grooves or guide holes for cooperation.
[0064] Based on the above-mentioned embodiments of the present application, by increasing the number of guide members 51 such as guide ribs or guide columns, for example, setting two guide ribs, and setting the two guide ribs parallel to each other, the guiding and limiting effect of the tripping piece 41 is further improved, thereby preventing the tripping piece 41 from deviating and getting stuck during the tripping movement, thereby making the tripping process smoother.
[0065] In the present application, the tripping piece 41 can be configured as any suitable structure.
[0066] refer to Figure 3 and Figure 4 As shown in , in an exemplary embodiment provided in the present application, the trip piece 41 may include a connecting portion 411 and a conducting portion 412. The connecting portion 411 is connected to the conducting portion 412, the contact point 43 is provided on the connecting portion 411, and the engaging groove is provided on the conducting portion 412. The plane on which the connecting portion 411 is located is perpendicular to the direction of movement of the trip piece 41, and the plane on which the conducting portion 412 is located is parallel to the direction of movement of the trip piece 41.
[0067] Based on the above-described embodiment of the present application, the trip plate 41 is specifically divided into a connecting portion 411 and a conducting portion 412. The connecting portion 411 is used to provide a contact point 43, which facilitates the connection and conduction between the trip plate 41 and the second pin 22. The provision of the conducting portion 412 not only facilitates the positional fixation between the trip plate 41 and the guide member 51, but also increases the area of the trip plate 41 itself, thereby increasing the current-carrying area, allowing the trip plate 41 to withstand a larger surge current and ensuring the stability of the trip structure 4.
[0068] In addition, in the present application, the trip piece 41 can be set to any suitable material. In some embodiments of the present application, the trip piece 41 can be set to copper material so that the trip piece 41 has good current-carrying capacity. In other embodiments of the present application, the trip piece 41 can also be set to any other suitable conductive material. The present application does not impose any specific restrictions on this.
[0069] In the present application, any suitable connection method can be set between the tripping piece 41 and the pin.
[0070] In an exemplary embodiment provided herein, a flexible connection can be provided between the trip plate 41 and the right pin 31, for example, by directly connecting the conductive portion 412 of the trip plate 41 to the right pin 31 via a wire. This flexible connection ensures that the trip plate 41 remains connected to the right pin 31 throughout its movement.
[0071] Alternatively, in some other embodiments of the present application, when the guide member 51 is set as a guide rib or a guide column, the guide rib or guide column can be directly set as a conductive material, and the guide rib or guide column can be connected to the right pin 31 for conduction. At this time, the trip piece 41 always maintains contact with the guide rib or guide column during the movement, thereby ensuring that the trip piece 41 and the right pin 31 are always conductive.
[0072] refer to Figure 1 As shown in , in an exemplary embodiment provided in the present application, an indication hole 6 is provided on the shell 1, and an indication surface is provided opposite the indication hole 6 in the shell 1. The trip piece 41 can at least partially block the indication surface when it moves, and the indication surface and the trip piece 41 are set to different colors.
[0073] Based on the above-mentioned embodiments of the present application, by providing an indicator hole 6, the indicator surface inside the housing 1 can be seen through the indicator hole 6, and after the tripping is completed, the tripping piece 41 at least partially blocks the indicator surface, and the tripping piece 41 and the indicator surface are set to different colors. At this time, the color change can be seen through the indicator hole 6, so that it can be determined through the indicator hole 6 whether the tripping process is completed.
[0074] In addition, in some other embodiments of the present application, a transparent area may be provided on the housing 1 instead of the indicator hole 6. Furthermore, the indicator surface and the trip plate 41 are generally configured to have colors that are significantly different and brighter. For example, the indicator surface may be configured to be red, while the trip plate 41 may be configured to be green.
[0075] Furthermore, it should be noted that, in the present application, at least two contact points 43 are provided, and specifically, two, three, or four contact points 43 can be provided. By increasing the number of contact points 43 and connecting them in parallel, current diversion is achieved. However, if there are too many contact points 43, the welds between each contact point 43 and the second pin 22 may not be welded properly, resulting in different tripping times for each contact point 43 during tripping, thereby affecting the tripping effect. Therefore, in actual use, an appropriate number of contact points 43 can be set based on the magnitude of the surge current.
[0076] On the basis of the above technical solution, according to a second aspect of the present application, a surge protector is provided. The surge protector includes a protective shell and the above-mentioned lightning protection module of the surge protector, and the lightning protection module is arranged in the protective shell.
[0077] Based on the above-mentioned embodiments of the present application, the surge protector provided by the present application includes the lightning protection module of the above-mentioned surge protector, so that the current can be diverted by adding a parallel structure at the position of the tripping structure 4, so that the position of the tripping structure 4 can withstand a larger surge current, thereby improving the lightning protection effect of the surge protector.
[0078] The preferred embodiments of the present application are described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, various simple modifications can be made to the technical solution of the present application, and these simple modifications all fall within the scope of protection of the present application.
[0079] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner unless there is any contradiction. In order to avoid unnecessary repetition, this application will not further describe various possible combinations.
[0080] In addition, the various implementation methods of the present application may be arbitrarily combined, and as long as they do not violate the concept of the present application, they should also be regarded as the contents disclosed in the present application.
Claims
1. A lightning protection module for a surge protector, characterized in that: The lightning protection module includes: A housing having an accommodating cavity formed therein; A pressure-sensitive chip is disposed in the accommodating cavity, and the pressure-sensitive chip has a first pin and a second pin; A left pin and a right pin are used to connect the inside and outside of the accommodating cavity, and the first pin and the second pin are connected to the left pin and the right pin respectively; A tripping structure, comprising a tripping piece and an elastic member, wherein the tripping piece is slidably disposed in the accommodating cavity and is capable of contacting and conducting with the second pin, and the tripping piece is connected and conducted with the right pin, and the elastic member is used to drive the tripping piece to move to separate from the second pin; The tripping piece has at least two contact points, and the second pins are correspondingly provided with at least two contact points. The two contact points are arranged in parallel and are respectively connected to the second pins. The contact points and the second pins are welded by low-melting-point solder.
2. The lightning protection module of the surge protector according to claim 1, characterized in that: The elastic member is configured as a spring, one end of the spring is connected to a side of the trip plate away from the second pin, and the other end of the spring is connected to the inner wall of the housing in a direction away from the second pin; When the contact point is welded and fixed to the second pin, the spring is in a stretched state.
3. The lightning protection module of the surge protector according to claim 2, characterized in that: A connecting hole is provided on the tripping piece, a connecting column is provided on the inner wall of the shell, and hooks are provided at both ends of the spring, and the hooks are respectively connected to the connecting hole and the connecting column.
4. The lightning protection module of the surge protector according to claim 1, characterized in that: The lightning protection module further includes a guide structure, which includes a guide member. The tripping piece can slide along an extension direction of the guide member, and the extension direction of the guide member is consistent with the contraction or extension direction of the elastic member.
5. The lightning protection module of the surge protector according to claim 4, characterized in that: The guide member is configured as a guide rib, the guide rib is provided on the inner wall of the accommodating cavity, and the guide rib extends in a direction away from the second pin; A clamping groove is formed on the tripping piece, and the guide rib is clamped in the clamping groove.
6. The lightning protection module of the surge protector according to claim 5, characterized in that: At least two guide ribs are provided, and the tripping piece is correspondingly provided with the clamping grooves to cooperate with the guide ribs.
7. The lightning protection module of the surge protector according to claim 6, characterized in that: The tripping piece includes a connecting portion and a conducting portion, the connecting portion is connected to the conducting portion, the contact point is provided on the connecting portion, and the clamping groove is provided on the conducting portion; The plane where the connecting portion is located is perpendicular to the moving direction of the tripping piece, and the plane where the conducting portion is located is parallel to the moving direction of the tripping piece.
8. The lightning protection module of the surge protector according to claim 1, characterized in that: An indication hole is provided on the housing, and an indication surface is provided in the housing opposite to the indication hole. The tripping piece can at least partially cover the indication surface when it moves, and the indication surface and the tripping piece are set to different colors.
9. The lightning protection module of the surge protector according to claim 1, characterized in that: The first pin is connected to the left pin by welding, and the second pin is indirectly connected to the right pin through the tripping structure.
10. A surge protector, characterized in that: The surge protector comprises: protective case; and, The lightning protection module of the surge protector according to any one of claims 1 to 9, wherein the lightning protection module is arranged in the protective shell.