Surface mount type base surge protector and electronic equipment

Abstract

The utility model provides a patch type base surge protector and electronic equipment, and the patch type base surge protector comprises a patch type base which is provided with a bottom wall, the patch type base is provided with a first contact elastic sheet and a second contact elastic sheet, one end, close to the bottom wall, of the first contact elastic sheet is provided with a first mounting plane parallel to the bottom wall, and the other end, close to the bottom wall, of the second contact elastic sheet is provided with a second mounting plane parallel to the bottom wall; one end, close to the bottom wall, of the second contact elastic sheet is provided with a second mounting plane parallel to the bottom wall; and the plugging module is provided with a first pin electrode and a second pin electrode, one end of the first pin electrode is in plugging connection with one end, far away from the bottom wall, of the first contact elastic sheet, and one end of the second pin electrode is in plugging connection with one end, far away from the bottom wall, of the second contact elastic sheet. According to the embodiment of the invention, the patch type base can be mounted on the circuit board by adopting a reflow soldering process, and the plugging module is inserted into the patch type base after the welding is completed, so that the tripping welding spot in the plugging module cannot be melted, the tripping phenomenon cannot be caused in the welding process, and the product miniaturization is facilitated.

Description

Technical Field

[0001] This application belongs to the field of electrical technology, and more specifically, relates to a surface mount surge protector and electronic device. Background Technology

[0002] A surge protector (SPD) is a device used to protect electronic equipment from voltage surges or transient overvoltages. It is widely used in power systems, communication equipment, and household appliances. Traditional surge protectors typically use a DIP (Dual In-line Package) form factor, which offers advantages such as simple structure and easy installation.

[0003] However, DIP-packaged surge protectors have some significant drawbacks in practical applications, specifically: When connecting a DIP-packaged surge protector to a circuit, excessively high temperatures at the pin electrodes during soldering can cause the tripping solder joints to melt, affecting the product's electrical connection and mechanical stability. This problem is particularly pronounced in high-density circuit boards or high-temperature environments, increasing the risk of product failure. Utility Model Content

[0004] The purpose of this application is to provide a surface-mount base surge protector and electronic device to solve the technical problem that the high temperature of the pin electrodes during the soldering process of existing surge protectors may cause the tripping solder joint to melt, thereby causing product failure.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: Firstly, a surface-mount base surge protector is provided, comprising:

[0006] A patch-type base has a bottom wall, and a first contact spring and a second contact spring are provided on the patch-type base. The end of the first contact spring near the bottom wall has a first mounting plane parallel to the bottom wall, and the end of the second contact spring near the bottom wall has a second mounting plane parallel to the bottom wall.

[0007] The plug-in module has a first pin electrode and a second pin electrode. One end of the first pin electrode is plugged into and plugged into the end of the first contact spring away from the bottom wall, and one end of the second pin electrode is plugged into and plugged into the end of the second contact spring away from the bottom wall.

[0008] In an optional embodiment of the first aspect, the plug-in module includes a housing and a mounting base, the mounting base being disposed within the housing, the mounting base including a partition perpendicular to the bottom wall and a first top plate and a bottom plate parallel to the bottom wall;

[0009] The partition plate, the first top plate and the bottom plate divide the space inside the shell into a first cavity and a second cavity which are away from each other, and a third cavity which is away from the bottom wall;

[0010] The first cavity is provided with a pressure sensitive resistor, the second cavity is provided with the other end of the first pin electrode and the other end of the second pin electrode, and the third cavity is provided with a trip electrode and a trip mechanism.

[0011] In an optional implementation of the first aspect, the pressure sensitive resistor has a first electrode and a second electrode, the first electrode extends into the third cavity, and the second electrode passes through the partition plate and is located in the second cavity;

[0012] The other end of the first pin electrode is connected to one end of the trip electrode through a wire;

[0013] The other end of the trip electrode is welded to the first electrode;

[0014] The other end of the second pin electrode is connected to the second electrode;

[0015] The trip mechanism is used for changing the pressure sensitive resistor from a first state to a second state, the first state is that the other end of the trip electrode is in contact with the first electrode, and the second state is that the other end of the trip electrode is separated from the first electrode.

[0016] In an optional implementation of the first aspect, the trip mechanism includes a tension spring, a compression spring and a sliding block;

[0017] The trip electrode is rotationally connected to the first top plate, one end of the tension spring is fixed to the first top plate, and the other end of the tension spring is connected to the trip electrode;

[0018] The first top plate is provided with a sliding rail, and the sliding block is slidingly arranged on the sliding rail;

[0019] The sliding block is provided with a first protrusion and a first limiting plate, the first top plate is provided with a second limiting plate, the compression spring is located between the first limiting plate and the second limiting plate, the first protrusion abuts against the other segment of the trip electrode when the pressure sensitive resistor is in the first state, and the first protrusion is located between the trip electrode and the first electrode when the pressure sensitive resistor is in the second state.

[0020] In an optional implementation of the first aspect, the first aspect further includes a first alarm electrode and a second alarm electrode, and the sliding block is further provided with a second protrusion which extends into the second cavity;

[0021] One end of the first alarm electrode and one end of the second alarm electrode are located in the second cavity, and the one end of the first alarm electrode and the one end of the second alarm electrode are in contact and abut against the second protrusion in the first state of the pressure-sensitive resistor, and the one end of the first alarm electrode and the one end of the second alarm electrode are separated in the second state of the pressure-sensitive resistor.

[0022] The patch-type base is further provided with a third contact spring and a fourth contact spring which are plug-connected with the other end of the first alarm electrode and the other end of the second alarm electrode.

[0023] In an optional implementation of the first aspect, one end of the third contact spring close to the bottom wall has a third patching plane parallel to the bottom wall, and one end of the fourth contact spring close to the bottom wall has a fourth patching plane parallel to the bottom wall.

[0024] In an optional implementation of the first aspect, the shell is provided with a second top plate opposite to the first top plate; the second top plate is provided with a window, the window is opposite to the slider in the first state of the pressure-sensitive resistor, and the window is opposite to the slide rail in the second state of the pressure-sensitive resistor.

[0025] In an optional implementation of the first aspect, the first cavity is provided with silica gel.

[0026] In an optional implementation of the first aspect, the shell is buckle-connected with the mounting seat.

[0027] In an optional implementation of the first aspect, the patch-type base is provided with a first anti-disengagement structure between the patch-type base and the plug-in module.

[0028] In an optional implementation of the first aspect, the first anti-disengagement structure includes a first buckle provided on the plug-in module and a first clamping groove provided on the patch-type base and matched with the first buckle.

[0029] In an optional implementation of the first aspect, the first contact spring and the second contact spring are provided with a second anti-disengagement structure between the first contact spring and the second contact spring and the patch-type base.

[0030] In an optional implementation of the first aspect, the patch-type base is provided with a first mounting hole and a second mounting hole, and the second anti-disengagement structure includes a first protrusion provided in the first mounting hole, a second protrusion provided in the second mounting hole, a third clamping groove provided on the first contact spring and matched with the first protrusion, and a fourth clamping groove provided on the second contact spring and matched with the second protrusion.

[0031] In a second aspect, an electronic device is provided, comprising the patch base surge protector of any one of the first aspect.

[0032] The patch base surge protector of the embodiments of the present application has the advantages that the patch base can be mounted on the circuit board by using the reflow soldering process, and the plug-in module is inserted into the patch base after the soldering is completed, so that the fuse point in the plug-in module will not melt and the fuse phenomenon will not occur during the soldering process. The reflow soldering process can greatly improve the production efficiency, reduce the labor cost and facilitate the installation. The patch base surge protector of the embodiments of the present application can also increase the areas of the first mounting plane and the second mounting plane without increasing the product size, which is beneficial to the miniaturization of the product, and the larger areas of the first mounting plane and the second mounting plane also enable the patch base to withstand higher current impact and improve the overall protection performance. The plug-in module and the patch base are connected by plug-in connection design, which makes the replacement and maintenance of the plug-in module more convenient, and the stability of the electrical connection can also be effectively guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0034] Figure 1 A structural schematic diagram of the patch base surge protector provided by the embodiments of the present application is shown in the figure;

[0035] Figure 2 A structural schematic diagram of the plug-in module provided by the embodiments of the present application is shown in the figure;

[0036] Figure 3 An exploded view of the patch base provided by the embodiments of the present application is shown in the figure;

[0037] Figure 4 A top view of the patch base provided by the embodiments of the present application is shown in the figure;

[0038] Figure 5 A sectional view of the A-A direction in the figure; Figure 4

[0039] Figure 6 An exploded structural schematic diagram of the patch base surge protector provided by the embodiments of the present application is shown in the figure; Figure 1

[0040] Figure 7 An exploded structural schematic diagram of the patch base surge protector provided by the embodiments of the present application is shown in the figure;​​Figure 2 ;

[0041] Figure 8 A top view of the shell assembly provided by the embodiment of the present application;

[0042] Figure 9 A sectional view of B-B in Figure 8 ;

[0043] Figure 10 A structural schematic diagram of the plug-in module without shell provided by the embodiment of the present application Figure 1 ;

[0044] Figure 11 A structural schematic diagram of the plug-in module without shell provided by the embodiment of the present application Figure 2 ;

[0045] Figure 12 A structural schematic diagram of the piezoresistor provided by the embodiment of the present application;

[0046] Figure 13 A structural schematic diagram of the mounting seat provided by the embodiment of the present application Figure 1 ;

[0047] Figure 14 A structural schematic diagram of the mounting seat provided by the embodiment of the present application Figure 2 ;

[0048] Figure 15 A structural schematic diagram of the trip electrode provided by the embodiment of the present application;

[0049] Figure 16 A structural schematic diagram of the slider provided by the embodiment of the present application.

[0050] In the drawings, various reference numerals refer to:

[0051] 1-patch base, 101-bottom wall, 102-top wall, 103-first clamping groove, 104-first mounting hole, 105-first boss, 106-second mounting hole, 107-second boss, 108-first positioning groove, 109-third mounting hole, 110-third boss, 111-fourth mounting hole, 112-fourth boss, 2-mounting seat, 201-baffle, 202-first top plate, 203-second buckle, 204-first support column, 205-rotation shaft, 206-sliding rail, 207-second limiting plate, 208-first positioning column, 209-baffle, 210-second through hole, 211-notch, 212-second positioning column, 213-bottom plate, 214-first avoiding groove, 215-second avoiding groove, 216-third avoiding groove, 217-fourth avoiding groove, 218-gap, 3-outer shell, 301-first buckle, 302-second clamping groove, 303-second top plate, 304-window, 305-supporting leg, 4-first pin electrode, 5-second pin electrode, 6-slider, 601-first protrusion, 602-second protrusion, 603-first limiting plate, 7-copper braid, 8-pressure sensitive resistor, 801-first electrode, 802-second electrode, 803-first through hole, 804-second positioning groove, 9-tripping electrode, 901-shaft hole, 902-hook, 10-compression spring, 11-tension spring, 12-first alarm electrode, 13-second alarm electrode, 14-plug-in module, 15-first contact spring, 151-first mounting plane, 152-third clamping groove, 16-second contact spring, 161-second mounting plane, 162-fourth clamping groove, 17-third contact spring, 171-third mounting plane, 172-fifth clamping groove, 18-fourth contact spring, 181-fourth mounting plane, 182-sixth clamping groove, 19-first cavity, 20-second cavity, 21-third cavity. DETAILED DESCRIPTION

[0052] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not used to limit the present application.

[0053] In the description of embodiments of the present application, the term "a plurality of" refers to two or more (including two).

[0054] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0055] In the description of the embodiments of the present application, unless specifically defined and limited otherwise, the terms "mounting", "connection", "connecting", "fixed", and the like should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0056] It should be understood that in the embodiments of the present application, "electrical connection" can be understood as physical contact and electrical conduction of components; it can also be understood as the form of connection between different components in the circuit structure through the entity line of the printed circuit board (PCB) copper foil or wire that can transmit electrical signals.

[0057] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0058] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically defined.

[0059] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which can mean that there are three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects have an "or" relationship.

[0060] Reference to "an embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily all referring to a particular embodiment logically divided into parts. It is explicitly contemplated that embodiments described herein can be combined with each other in any way.

[0061] At present, when connecting the traditional DIP (Dual In-line Package) surge protector into the circuit, the temperature of the pin electrode is too high in the welding process, which may cause the fuse welding point to melt, thereby affecting the electrical connection and mechanical stability of the product. Therefore, an embodiment of the application designs a patch type base surge protector. Please refer to Figures 1-3 The patch type base surge protector comprises a patch type base 1 having a bottom wall 101, a first contact spring 15 and a second contact spring 16 are arranged on the patch type base 1, one end of the first contact spring 15 close to the bottom wall 101 has a first patch mounting plane 151 parallel to the bottom wall 101, one end of the second contact spring 16 close to the bottom wall 101 has a second patch mounting plane 161 parallel to the bottom wall 101; a plug-in module 14 having a first pin electrode 4 and a second pin electrode 5, one end of the first pin electrode 4 is connected to one end of the first contact spring 15 away from the bottom wall 101, and one end of the second pin electrode 5 is connected to one end of the second contact spring 16 away from the bottom wall 101.

[0062] Referring to Figure 1 The bottom wall 101 of the patch type base 1 is located in the plane of the ZO direction, and when the patch type base 1 is installed, the bottom wall 101 is the side facing the circuit board.

[0063] It should be noted that the patch type base surge protector of the embodiment of the application is different from the welding method of the existing DIP surge protector, and the existing DIP surge protector adopts wave soldering, while the patch type base surge protector of the application can adopt reflow soldering process. Reflow soldering is to mount the patch type base 1 on the circuit board, melt the solder by high temperature gas to realize welding, and then insert the plug-in module 14 into the patch type base 1 after welding. Since only the patch type base 1 is exposed to high temperature gas in the welding process, the fuse welding point in the plug-in module 14 is not heated, so the fuse welding point in the plug-in module 14 will not melt, and the fuse phenomenon will not occur in the welding process. In addition, the reflow soldering process can greatly improve the production efficiency, reduce the labor cost and is easy to install.

[0064] The surface mount surge protector of this application embodiment can increase the area of ​​the first mounting plane 151 and the second mounting plane 161 without increasing the product size, which is beneficial for product miniaturization. In addition, increasing the area of ​​the first mounting plane 151 and the second mounting plane 161 can make the surface mount base 1 more firmly soldered to the circuit board during reflow soldering, improving soldering reliability; the larger area of ​​the first mounting plane 151 and the second mounting plane 161 also enables the surface mount base 1 to withstand higher current surges, improving overall protection performance.

[0065] The pluggable module 14 and the surface mount base 1 are connected by a pluggable design, which makes the replacement and maintenance of the pluggable module 14 more convenient, and at the same time the stability of the electrical connection can be effectively guaranteed.

[0066] As an optional implementation, the patch base 1 and the plug-in module 14 have a first anti-detachment structure.

[0067] For details, see Figure 2 , Figure 3 The first anti-detachment structure includes a first buckle 301 disposed on the plug-in module 14 and a first slot 103 disposed on the patch base 1 and cooperating with the first buckle 301. The first slot 103 is higher than the top wall 102 of the patch base 1. After the first buckle 301 is inserted into the first slot 103, a firm locking state is formed to prevent the plug-in module 14 from accidentally falling off.

[0068] Optionally, the plug-in module 14 is provided with a support foot 305 on the side of the top wall 102 near the surface mount base 1. The surface mount base 1 is provided with a first positioning groove 108 corresponding to the support foot 305. After the support foot 305 is inserted into the first positioning groove 108, the assembly firmness of the plug-in module 14 is further enhanced, which can prevent the first pin electrode 4 and the second pin electrode 5 from shaking in the first contact spring 15 and the second contact spring 16.

[0069] As an optional implementation, the first contact spring 15 and the second contact spring 16 have a second anti-detachment structure between them and the patch base 1.

[0070] For details, see Figures 2-5The first mounting hole 104 and the second mounting hole 106 are arranged on the patch base 1, the second anti-disengagement structure comprises a first boss 105 arranged in the first mounting hole 104, a second boss 107 arranged in the second mounting hole 106, a third clamping groove 152 arranged on the first contact spring 15 and matched with the first boss 105, and a fourth clamping groove 162 arranged on the second contact spring 16 and matched with the second boss 107. Through the assembly of the third clamping groove 152 and the first boss 105 and the fourth clamping groove 162 and the second boss 107, the first contact spring 15 and the second contact spring 16 cannot be loosened in the first mounting hole 104 and the second mounting hole 106, thereby improving the stability and safety of the electrical connection.

[0071] As an optional embodiment, referring to Figures 6-9 The plug-in module 14 comprises a shell 3 and a mounting seat 2, the mounting seat 2 is arranged in the shell 3, the mounting seat 2 comprises a partition plate 201 perpendicular to the bottom wall 101 and a first top plate 202 and a bottom plate 213 parallel to the bottom wall 101; the partition plate 201, the first top plate 202 and the bottom plate 213 divide the space inside the shell 3 into a first cavity 19 and a second cavity 20 which are away from each other, and a third cavity 21 which is away from the bottom wall 101 side of the first cavity 19 and the second cavity 20; the first cavity 19 is provided with the pressure-sensitive resistor 8; the second cavity 20 is provided with the other end of the first pin electrode 4 and the other end of the second pin electrode 5; the third cavity 21 is provided with the tripping electrode 9 and the tripping mechanism.

[0072] As an optional embodiment, referring to Figure 6 The shell 3 is a box-shaped structure with one side open, the open side of the shell 3 is arranged opposite to the top wall 102 of the patch base 1, the shell 3 is provided with a second clamping groove 302, the mounting seat 2 is provided with a second buckle 203 matched with the second clamping groove 302, and the mounting seat 2 is fixed in the shell 3 through the cooperation of the second buckle 203 and the second clamping groove 302. The bottom plate 213, the partition plate 201 and the first top plate 202 of the mounting seat 2 can be integrally formed.

[0073] In this embodiment, the pressure-sensitive resistor 8 is arranged in the first cavity 19, and the first pin electrode 4 and the second pin electrode 5 are arranged in the second cavity 20, so that the electrical interference can be effectively isolated and the protection performance is improved.

[0074] As an optional embodiment, referring to Figure 10 , Figure 11The pressure sensitive resistor 8 has a first electrode 801 and a second electrode 802, the first electrode 801 extends into the third cavity 21, and the second electrode 802 is located in the second cavity 20 through the partition plate 201; the other end of the first pin electrode 4 is connected with one end of the tripping electrode 9 through a wire; the other end of the tripping electrode 9 is welded with the first electrode 801; the other end of the second pin electrode 5 is connected with the second electrode 802; the tripping mechanism is used to change the pressure sensitive resistor 8 from a first state to a second state, the first state is that the other end of the tripping electrode 9 is in contact with the first electrode 801, and the second state is that the other end of the tripping electrode 9 is separated from the first electrode 801.

[0075] Referring to Figure 10 The other end of the first pin electrode 4 and the other end of the second pin electrode 5 are located outside the second cavity 20 through the bottom plate 213 of the mounting base 2, and are used to be plugged and connected with the first contact spring 15 and the second contact spring 16. The other end of the first pin electrode 4 is located in the second cavity 20 and is electrically connected with one end of the tripping electrode 9 through the copper braid 7.

[0076] Referring to Figure 11 The first top plate 202 is provided with a notch 211, and the first electrode 801 of the pressure sensitive resistor 8 extends to the third cavity 21 through the notch 211. The first electrode 801 is provided with a first through hole 803 (see Figure 12 The other end of the tripping electrode 9 passes through the first through hole 803 and is tin-welded with the first electrode 801, and the welding point is a tripping welding point.

[0077] Referring to Figure 12 , Figure 13 Optionally, the pressure sensitive resistor 8 is provided with a second positioning groove 804, and the partition plate 201 is provided with a second positioning column 212 matched with the second positioning groove 804, so as to improve the stability and assembly precision of the pressure sensitive resistor 8.

[0078] Referring to Figure 10 , Figure 13 The partition plate 201 is provided with a second through hole 210, and the second electrode 802 is tin-welded with the other end of the second pin electrode 5 through the second through hole 210.

[0079] After the pressure sensitive resistor 8 is installed, silica gel is poured into the first cavity 19 containing the pressure sensitive resistor 8 to seal it, and the packaging of the pressure sensitive resistor 8 is completed.

[0080] The voltage-dependent resistor 8 is a nonlinear element, whose resistance changes significantly with voltage, which can effectively absorb transient overvoltage and protect the circuit from damage. In the normal working voltage state, the voltage-dependent resistor 8 maintains a high resistance state and almost does not conduct electricity. At this time, the voltage-dependent resistor 8 is in the first state, that is, the state that the other end of the tripping electrode 9 is in contact with the first electrode 801. When the voltage-dependent resistor 8 deteriorates or long-term overvoltage, the resistance of the voltage-dependent resistor 8 decreases, and the current is quickly discharged to prevent voltage impact. In this process, the voltage-dependent resistor 8 generates heat, and the welding point of the other end of the tripping electrode 9 and the first electrode 801 is melted by heat. The voltage-dependent resistor 8 switches to the second state, that is, the state that the other end of the tripping electrode 9 is separated from the first electrode 801, thereby cutting off the circuit and avoiding damage to the equipment in the circuit.

[0081] As an optional implementation, referring to Figure 10 、 Figure 11 , the tripping mechanism includes a tension spring 11, a compression spring 10, and a sliding block 6; the tripping electrode 9 is rotatably connected to the first top plate 202, one end of the tension spring 11 is fixed on the first top plate 202, and the other end of the tension spring 11 is connected to the tripping electrode 9; the first top plate 202 is provided with a sliding rail 206, and the sliding block 6 is slidingly arranged on the sliding rail 206; the sliding block 6 is provided with a first protrusion 601 and a first limiting plate 603, the first top plate 202 is provided with a second limiting plate 207, and the compression spring 10 is located between the first limiting plate 603 and the second limiting plate 207; in the first state of the voltage-dependent resistor 8, the first protrusion 601 abuts against the other end of the tripping electrode 9, and in the second state of the voltage-dependent resistor 8, the first protrusion 601 is located between the tripping electrode 9 and the first electrode 801.

[0082] Referring to Figure 14 、 Figure 15 , the first top plate 202 is provided with a rotating shaft 205, and the tripping electrode 9 is provided with an axle hole 901 matched with the rotating shaft 205, and the tripping electrode 9 is connected with the rotating shaft 205 through the axle hole 901.

[0083] Referring to Figure 14 、 Figure 15 , the first top plate 202 is further provided with a first support column 204, one end of the tension spring 11 is sleeved on the first support column 204, the tripping electrode 9 is provided with a hook 902, and the other end of the tension spring 11 is sleeved on the hook 902. In the first state of the voltage-dependent resistor 8, the tension spring 11 maintains a tension state.

[0084] Referring to Figure 14 、 Figure 16A set of parallel slide rails 206 is provided on the first top plate 202, and the slider 6 can slide along the slide rails 206. A gap 218 is formed in the middle of the set of parallel slide rails 206, and the compression spring 10 is located in this gap 218. A first limiting plate 603 is located at the end of the gap 218 near the first electrode 801, and a second limiting plate 207 is located at the end of the gap 218 away from the first electrode 801. The compression spring 10 is located between the first limiting plate 603 and the second limiting plate 207. In the first state, the varistor 8 is in a compressed state, and the first protrusion 601 is pressed against the tripping electrode 9. When the varistor 8 experiences an overvoltage, causing it to heat up, the solder joint between the other end of the tripping electrode 9 and the first electrode 801 becomes detached. Under the tension of the tension spring 11, the tripping electrode 9 rotates around the axis 205 along... Figure 10 When rotated clockwise, the other end of the tripping electrode 9 disengages from the first through hole 803 of the first electrode 801. Under the elastic force of the compression spring 10, the first protrusion 601 of the slider 6 moves along the slide rail 206, thereby engaging between the first electrode 801 and the other end of the tripping electrode 9. The first protrusion 601 cuts off the small current arc, achieving safe tripping failure. Optionally, a baffle 209 is also provided on the first top plate 202. The baffle 209 is located on the side of the first electrode 801 away from the slide rail 206 to prevent the slider 6 from moving excessively.

[0085] As an optional implementation, see [link to implementation details]. Figure 6 , Figure 7 The patch-type base surge protector of this application embodiment also includes a first alarm electrode 12 and a second alarm electrode 13; a second protrusion 602 extending into the second cavity 20 is also provided on the slider 6; one end of the first alarm electrode 12 and one end of the second alarm electrode 13 are located in the second cavity 20. In the first state of the varistor 8, one end of the first alarm electrode 12 and one end of the second alarm electrode 13 are in contact with and abut against the second protrusion 602. In the second state of the varistor 8, one end of the first alarm electrode 12 and one end of the second alarm electrode 13 are separated. The patch-type base 1 is also provided with a third contact spring 17 and a fourth contact spring 18 that are pluggably connected to the other end of the first alarm electrode 12 and the other end of the second alarm electrode 13.

[0086] See Figure 14 Multiple positioning posts 208 can be provided on the partition 201 located inside the second cavity 20 for positioning the two alarm electrodes located inside the second cavity 20. The base plate 213 of the mounting base 2 is also provided with a first clearance groove 214 for one end of the first pin electrode 4 to pass through, a second clearance groove 215 for one end of the second pin electrode 5 to pass through, a third clearance groove 216 for the other end of the first alarm electrode 12 to pass through, and a fourth clearance groove 217 for the other end of the second alarm electrode 13 to pass through.

[0087] Referring to Figure 10 , in the first state of the pressure sensitive resistor 8, one end of the first alarm electrode 12 and one end of the second alarm electrode 13 are in contact and abut against the second protrusion 602, realizing the remote signaling closure, and the alarm system works normally. When the pressure sensitive resistor 8 becomes the second state, the first alarm electrode 12 and the second alarm electrode 13 are separated, the closed loop is disconnected, the remote signaling is opened, the alarm system triggers the alarm signal, prompts the equipment abnormality, ensures timely processing, and prevents safety accidents.

[0088] Referring to Figure 3 , the patch type base 1 is further provided with a third mounting hole 109 for mounting the third contact spring 17, and a fourth mounting hole 111 for mounting the fourth contact spring 18. Optionally, the third mounting hole 109 is further provided with a third boss 110 on the side wall, and the third contact spring 17 is further provided with a fifth clamping groove 172 matched with the third boss 110. The fourth mounting hole 111 is provided with a fourth boss 112 on the side wall, and the fourth contact spring 18 is provided with a sixth clamping groove 182 matched with the fourth boss 112. Through the assembly of the fifth clamping groove 172 and the third boss 110, and the sixth clamping groove 182 and the fourth boss 112, the third contact spring 17 and the fourth contact spring 18 will not be loose in the third mounting hole 109 and the fourth mounting hole 111, thereby improving the stability and safety of electrical connection.

[0089] As an optional implementation, referring to Figure 1 , one end of the third contact spring 17 close to the bottom wall 101 has a third patching plane 171 parallel to the bottom wall 101, and one end of the fourth contact spring 18 close to the bottom wall 101 has a fourth patching plane 181 parallel to the bottom wall 101.

[0090] This embodiment improves the contact area of the third contact spring 17 and the fourth contact spring 18 with the circuit board by providing the third patching plane 171 and the fourth patching plane 181 on the third contact spring 17 and the fourth contact spring 18, and can realize firm welding with the circuit board through the reflow soldering process.

[0091] As an optional implementation, referring to Figure 8 , Figure 9 , the shell 3 has a second top plate 303 opposite to the first top plate 202; the second top plate 303 is provided with a window 304, the window 304 is opposite to the sliding block 6 when the pressure sensitive resistor 8 is in the first state, and the window 304 is opposite to the sliding rail 206 when the pressure sensitive resistor 8 is in the second state.

[0092] Optionally, the slider 6 is green, the slide rail 206 is red, when the pressure sensitive resistor 8 is in the second state, it is red from the window 304, thereby prompting to replace the pressure sensitive resistor 8. In addition, the color difference design of the slider 6 and the slide rail 206 facilitates the operator to quickly identify the equipment state, avoids misjudgment, and ensures the maintenance efficiency.

[0093] The embodiment can realize double warning through the setting of the alarm electrode and the window 304, that is, through the electrical signal triggering alarm and the visual prompt intuitive display, thereby further improving the reliability of the equipment safety management.

[0094] The embodiment of the application further provides an electronic device, which comprises the patch type base surge protector.

[0095] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the application, and not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the application, and they should be covered in the scope of the claims and the specification of the application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A surface mount base surge protector, characterized by, The application relates to a plug-in module and a patch base. The patch base comprises a bottom wall, a first contact spring and a second contact spring, the first contact spring has a first mounting plane parallel to the bottom wall at one end close to the bottom wall, and the second contact spring has a second mounting plane parallel to the bottom wall at one end close to the bottom wall. The plug-in module comprises a shell and a mounting seat, the mounting seat is arranged in the shell, and the mounting seat comprises a partition plate perpendicular to the bottom wall and a first top plate and a bottom plate parallel to the bottom wall.

2. The patch mount surge protector of claim 1, wherein, The partition plate, the first top plate and the bottom plate divide the space in the shell into a first cavity and a second cavity which are opposite to each other and a third cavity which is far away from the bottom wall. A pressure-sensitive resistor is arranged in the first cavity, the other end of the first pin electrode and the other end of the second pin electrode are arranged in the second cavity, and a tripping electrode and a tripping mechanism are arranged in the third cavity. The pressure-sensitive resistor has a first electrode and a second electrode, the first electrode extends into the third cavity, and the second electrode passes through the partition plate and is located in the second cavity.

3. The patch mount surge protector of claim 2, wherein, The other end of the first pin electrode is connected with one end of the tripping electrode through a wire. The other end of the tripping electrode is welded with the first electrode. The other end of the second pin electrode is connected with the second electrode. The tripping mechanism is used for changing the pressure-sensitive resistor from a first state to a second state, the first state is that the other end of the tripping electrode is in contact with the first electrode, and the second state is that the other end of the tripping electrode is separated from the first electrode. The tripping mechanism comprises a tension spring, a compression spring and a sliding block.

4. The patch mount surge protector of claim 3, wherein, The tripping electrode is rotationally connected to the first top plate, one end of the tension spring is fixed to the first top plate, and the other end of the tension spring is connected with the tripping electrode. The first top plate is provided with a sliding rail, and the sliding block is slidingly arranged on the sliding rail. The sliding block is provided with a first protruding block and a first limiting plate, the first top plate is provided with a second limiting plate, the compression spring is located between the first limiting plate and the second limiting plate, the first protruding block abuts against the other end of the tripping electrode in the first state of the pressure-sensitive resistor, and the first protruding block is located between the tripping electrode and the first electrode in the second state of the pressure-sensitive resistor. The application further comprises a first alarm electrode and a second alarm electrode, and the sliding block is further provided with a second protruding block extending into the second cavity.

5. The patch mount surge protector of claim 4, wherein, ​ One end of the first alarm electrode and one end of the second alarm electrode are located in the second cavity, and the one end of the first alarm electrode and the one end of the second alarm electrode are in contact and abut against the second protrusion when the pressure-sensitive resistor is in the first state, and the one end of the first alarm electrode and the one end of the second alarm electrode are separated when the pressure-sensitive resistor is in the second state. The patch-type base is further provided with a third contact spring and a fourth contact spring which are plug-in connected with the other end of the first alarm electrode and the other end of the second alarm electrode.

6. The patch mount surge protector of claim 5, wherein, An end of the third contact spring close to the bottom wall has a third patching plane parallel to the bottom wall, and an end of the fourth contact spring close to the bottom wall has a fourth patching plane parallel to the bottom wall.

7. The patch mount surge protector of claim 4, wherein, The housing has a second top plate opposite to the first top plate, and the second top plate is provided with a window, and the window is opposite to the sliding block when the pressure-sensitive resistor is in the first state, and the window is opposite to the sliding rail when the pressure-sensitive resistor is in the second state.

8. The patch mount surge protector of claim 2, wherein, The first cavity is provided with silica gel.

9. The patch mount surge protector of claim 2, wherein, The housing is buckle-connected with the mounting seat.

10. The patch mount surge protector of any of claims 1-9, wherein, The patch-type base and the plug-in module have a first anti-disengagement structure.

11. The patch mount surge protector of claim 10, wherein, The first anti-disengagement structure includes a first buckle provided on the plug-in module and a first clamping groove provided on the patch-type base and matched with the first buckle.

12. The patch mount surge protector of any of claims 1-9, wherein, The first contact spring and the second contact spring have a second anti-disengagement structure with the patch-type base.

13. The patch mount surge protector of claim 12, wherein, The patch-type base is provided with a first mounting hole and a second mounting hole, and the second anti-disengagement structure includes a first protrusion provided in the first mounting hole, a second protrusion provided in the second mounting hole, a third clamping groove provided on the first contact spring and matched with the first protrusion, and a fourth clamping groove provided on the second contact spring and matched with the second protrusion.

14. An electronic device, comprising: The patch-type base includes: The patch-type base surge protector according to any one of claims 1-13.

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