Paster type single-phase lightning protection device and material belt

Abstract

The utility model discloses a paster type single-phase lightning protection device and a material belt, the lightning protection device comprises two piezoresistors, a gas discharge tube, a connecting piece and a housing, the connecting piece is connected between the rear ends of the two piezoresistors and the front end of the gas discharge tube; the front ends of the two piezoresistors are respectively provided with a first pin; the rear end of the gas discharge tube is provided with a second pin; the first pin and the second pin extend out of the shell, and the lower ends of the first pin and the second pin are in a patch type and are flush with each other. The lightning protection device is formed by connecting the two piezoresistors and the gas discharge tube through the connecting piece and placing the piezoresistors and the gas discharge tube in the injection-molded shell, the lower ends of the pins of the piezoresistors and the gas discharge tube are in a surface-mounted mode, the problem that an existing discrete device is large in occupied area is solved, integration is high, overall injection molding is achieved, and the occupied area is small. And meanwhile, the surge through-current problem of an existing patch device is solved, and the 10KA surge capacity or higher can be met.

Description

Technical Field

[0001] This utility model relates to the field of lightning protection devices, and in particular to a patch-type single-phase lightning arrester and its strip. Background Technology

[0002] In the field of switching power supplies and other single-phase power supply systems, surge protector design is crucial to protect electronic equipment from lightning surges. However, existing surge protectors mostly use discrete components, resulting in large circuit board footprints, high costs, and insufficient current carrying capacity, failing to meet the space optimization and cost control requirements of modern power supply designs.

[0003] As electronic devices become smaller and more integrated, power supply design solutions are increasingly focused on space optimization and cost reduction. Discrete components, due to their physical size and layout, cannot effectively meet this design concept, resulting in a large overall board area and a small current carrying capacity under high current surges, thus failing to effectively protect the equipment.

[0004] Therefore, this application aims to propose a novel surge protector design that, by employing more integrated devices and optimized circuit layout, solves the problems existing in the prior art, achieves smaller space occupation, lower cost and higher current carrying capacity, and meets the performance requirements of modern power systems for surge protectors. Utility Model Content

[0005] In view of this, the present invention addresses the deficiencies of existing technologies, and its main objective is to provide a surface-mount single-phase surge protector and its strip. This protector connects two varistors and a gas discharge tube using a connector, and is housed within an injection-molded housing to form the surge protector. The lower ends of the varistors and gas discharge tube are surface-mount, solving the problem of large board area occupied by existing discrete devices. It features high integration, integral injection molding, and a small board area. Simultaneously, it solves the surge current carrying capacity problem of existing surface-mount devices, meeting surge capacity requirements of 10kA or higher.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A surface-mount single-phase surge protector includes two varistors, a gas discharge tube, a connector connecting the two varistors and the gas discharge tube, and a housing covering the two varistors and the gas discharge tube. The connector is connected between the rear ends of the two varistors and the front end of the gas discharge tube. The front ends of the two varistors each have a first pin. The rear end of the gas discharge tube has a second pin. Both the first pin and the second pin extend outside the housing, and the lower ends of the first pin and the second pin are surface-mount and flush with each other.

[0008] As a preferred embodiment: the connector has a first contact portion, a second contact portion, and an intermediate contact portion, which are integrally connected; the intermediate contact portion is located between the first contact portion and the second contact portion, and the first contact portion, the second contact portion, and the intermediate contact portion are all sheet-like. Multiple solder holes are provided on the first contact portion and the second contact portion to facilitate solder penetration for fastening the connector and the varistor together. The multiple solder holes are arranged in an array.

[0009] As a preferred embodiment: the first contact portion is connected to one of the varistors, the second contact portion is connected to another varistor, and the intermediate contact portion is connected to the gas discharge tube.

[0010] As a preferred embodiment: there are bends between the first contact portion and the intermediate contact portion, and between the second connecting portion and the intermediate contact portion, and the bends on both sides and the intermediate contact portion are distributed in a U-shape.

[0011] As a preferred embodiment: the first pin is in the form of a sheet at the end connected to the varistor, and has multiple through holes on it; the multiple through holes are arranged in an array.

[0012] As a preferred embodiment: the first pin and the second pin each have a surface mount soldering portion, and the lower ends of the surface mount soldering portions are on the same horizontal plane.

[0013] As a preferred embodiment, the housing is a ceramic housing, and a sealant is poured into the ceramic housing to completely seal the varistor and the gas discharge tube.

[0014] As a preferred embodiment, the end of the second pin that contacts the gas discharge tube is plate-shaped, and a through-hole is provided on it.

[0015] As a preferred embodiment: the two varistors are connected in parallel, with one varistor connected to the N terminal and the other varistor connected to the PE terminal; one end of the gas discharge tube is connected to the L terminal, and the other end is connected to the parallel connection of the two varistors.

[0016] A strip for producing the patch-type single-phase surge protector includes a metal frame with frame strips extending inward from both sides of the metal frame. One frame strip contacts a varistor to form a first pin, and the other frame strip contacts a gas discharge tube to form a second pin.

[0017] Compared with existing technologies, this invention has significant advantages and beneficial effects. Specifically, as shown in the above technical solution, a surge protector is formed by connecting two varistors and a gas discharge tube using a connector and placing them in an injection-molded housing. The lower ends of the varistors and gas discharge tube are surface-mount, solving the problem of large board area occupied by existing discrete devices. This design features high integration, integral injection molding, and a small board area. It also solves the surge current carrying capacity problem of existing surface-mount devices, meeting surge capacity requirements of 10KA or higher. This surge protector can be applied to single-phase power supply surge protection in switching power supplies or other single-phase power supply systems, providing full-mode surge protection for the line.

[0018] 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

[0019] Figure 1 This is a three-dimensional schematic diagram of the surge protector of this utility model;

[0020] Figure 2 This is a three-dimensional schematic diagram of the surge protector of this utility model from another perspective;

[0021] Figure 3 This is a schematic diagram of the connection structure between the varistor and the gas discharge tube of this utility model;

[0022] Figure 4 This is a three-dimensional schematic diagram of the connector of this utility model;

[0023] Figure 5 This is a schematic diagram of the surge protector circuit of this utility model;

[0024] Figure 6 This is a schematic diagram of the surge protector strip structure and the shell formed on the strip according to the present invention.

[0025] Explanation of reference numerals in the attached diagram:

[0026] 10. Varistor; 11. First pin; 20. Gas discharge tube; 21. Second pin; 30. Connector; 31. First contact; 32. Second contact; 33. Intermediate contact; 34. Bending part; 40. Housing; 50. Through-hole; 60. Surface mount soldering part; 70. Material strip; 71. Metal frame; 72. Frame strip. Detailed Implementation

[0027] This utility model is as follows Figures 1 to 6 As shown, a patch-type single-phase surge protector and its tape are disclosed. The surge protector includes two varistors 10, a gas discharge tube 20, a connector 30 connecting the two varistors 10 and the gas discharge tube 20, and a housing 40 covering the two varistors 10 and the gas discharge tube 20.

[0028] The connector 30 is connected between the rear ends of the two varistors 10 and the front end of the gas discharge tube 20; the front ends of the two varistors 10 each have a first pin 11; the rear end of the gas discharge tube 20 has a second pin 21; the first pin 11 and the second pin 21 both extend outside the housing 40, and the lower ends of the first pin 11 and the second pin 21 are both surface mount type and flush with each other.

[0029] The connector 30 has a first contact portion 31, a second contact portion 32, and an intermediate contact portion 33, which are integrally connected. The intermediate contact portion 33 is located between the first contact portion 31 and the second contact portion 32. The first contact portion 31, the second contact portion 32, and the intermediate contact portion 33 are all sheet-like. Multiple solder holes 50 are provided on the first contact portion 31 and the second contact portion 32 to facilitate solder penetration and securely connect the connector 30 and the varistor 10. The multiple solder holes 50 are arranged in an array to form an array of solder joints, thereby improving the connection stability. The first contact portion 31 is connected to one of the varistors 10, the second contact portion 32 is connected to the other varistor 10, and the intermediate contact portion 33 is connected to the gas discharge tube 20. By using the first contact portion 31, the second contact portion 32, and the intermediate contact portion 33 of the connector 30 to connect the two varistors 10 and the gas discharge tube 20 to each other, compared with the traditional discrete device mounting method, the spacing between electronic components is reduced, the integration is higher, the occupied area is reduced, the cost is reduced, and the current carrying capacity is improved. There are bends 34 between the first contact portion 31 and the intermediate contact portion 33, and between the second connector portion and the intermediate contact portion 33. The bends 34 on both sides and the intermediate contact portion 33 are distributed in a U-shape. The setting of the bends 34 allows the two varistors 10 to maintain a certain distance from each other while connecting to the gas discharge tube 20, improving heat dissipation efficiency. It also makes the varistors 10 and the gas discharge tube 20 staggered, which facilitates the operation and welding of the connector 30.

[0030] The first pin 11, corresponding to the end connected to the varistor 10, is plate-shaped and has multiple through-holes 50 arranged in an array to improve connection stability. The first pin 11 and the second pin 21 each have a surface mount soldering portion 60, the lower ends of which are on the same horizontal plane to facilitate surface mount soldering and reduce board area. The housing 40 is a ceramic housing, filled with sealant to completely seal the varistor 10 and the gas discharge tube 20, thus completely encapsulating them for explosion-proof and flame-retardant effects. The end of the second pin 21 that contacts the gas discharge tube 20 is plate-shaped and has through-holes 50.

[0031] The electronic components of the surge protector are connected as follows: the two varistors 10 are connected in parallel, one of which is connected to the N terminal and the other is connected to the PE terminal; one end of the gas discharge tube 20 is connected to the L terminal and the other end is connected to the parallel terminal of the two varistors 10.

[0032] A strip 70 for producing the aforementioned patch-type single-phase surge protector includes a metal frame 71. Frame strips 72 extend inward from both sides of the metal frame 71. One frame strip 72 contacts a varistor 10 to form a first pin 11, and the other frame strip 72 contacts a gas discharge tube 20 to form a second pin 21. This strip 70 allows for the integral injection molding of two varistors 10 and the gas discharge tube 20, facilitating the process. After encapsulation, excess frame strips 72 are cut off, resulting in multiple surge protectors.

[0033] The key design feature of this invention is the use of a connector to link two varistors and a gas discharge tube, placing them within an injection-molded housing to form a surge protector. The varistor and gas discharge tube have surface-mount leads, solving the problem of large board space requirements associated with existing discrete devices. This design offers high integration, is integrally injection molded, and occupies a small board area. It also addresses the surge current carrying capacity issue of existing surface-mount devices, meeting surge protection requirements of 10kA or higher. This surge protector can be applied to single-phase power supply surge protection in switching power supplies or other single-phase power systems, providing full-mode surge protection for the line.

[0034] 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 patch-type single-phase lightning arrester, characterized by: The application relates to a pressure-sensitive resistor, which comprises two pressure-sensitive resistors, a gas discharge tube, a connecting piece connected between the two pressure-sensitive resistors and the gas discharge tube, and a shell covering the two pressure-sensitive resistors and the gas discharge tube.

2. The patch-type single-phase lightning protector according to claim 1, characterized by: The connecting piece has a first contact part, a second contact part and an intermediate contact part which are integrally connected; the intermediate contact part is located between the first contact part and the second contact part, and the first contact part, the second contact part and the intermediate contact part are in sheet shape; a plurality of tin penetrating holes are arranged on the first contact part and the second contact part respectively to facilitate tin penetration and fasten the connecting piece and the pressure-sensitive resistor.

3. The patch-type single-phase lightning protector according to claim 2, characterized by: The first contact part is connected with one of the pressure-sensitive resistors, the second contact part is connected with the other pressure-sensitive resistor, and the intermediate contact part is connected with the gas discharge tube.

4. The patch-type single-phase lightning protector according to claim 2, characterized by: The first contact part and the intermediate contact part and the second contact part and the intermediate contact part have bending parts respectively, and the bending parts and the intermediate contact part are in U-shaped distribution.

5. The patch-type single-phase lightning protector according to claim 1, characterized by: The first contact part and the intermediate contact part and the second contact part and the intermediate contact part have bending parts respectively, and the bending parts and the intermediate contact part are in U-shaped distribution.

6. The patch-type single-phase lightning protector according to claim 1, characterized by: The first contact part and the intermediate contact part and the second contact part and the intermediate contact part have bending parts respectively, and the bending parts and the intermediate contact part are in U-shaped distribution.

7. The patch-type single-phase lightning protector according to claim 1, characterized by: The first contact part and the intermediate contact part and the second contact part and the intermediate contact part have bending parts respectively, and the bending parts and the intermediate contact part are in U-shaped distribution.

8. The patch-type single-phase lightning protector according to claim 1, characterized by: The first contact part and the intermediate contact part and the second contact part and the intermediate contact part have bending parts respectively, and the bending parts and the intermediate contact part are in U-shaped distribution.

9. The patch-type single-phase lightning protector according to claim 1, characterized by: The first contact part and the intermediate contact part and the second contact part and the intermediate contact part have bending parts respectively, and the bending parts and the intermediate contact part are in U-shaped distribution.

10. A web for producing the patch-type single-phase lightning arrester according to any one of claims 1 to 9, characterized by: The first contact part and the intermediate contact part and the second contact part and the intermediate contact part have bending parts respectively, and the bending parts and the intermediate contact part are in U-shaped distribution. The first contact part and the intermediate contact part and the second contact part and the intermediate contact part have bending parts respectively, and the bending parts and the intermediate contact part are in U-shaped distribution. The first contact part and the intermediate contact part and the second contact part and the intermediate contact part have bending parts respectively, and the bending parts and the intermediate contact part are in U-shaped distribution. 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