Surge protection device

Abstract

The surge protection device comprises at least one protection pole, the protection pole comprises a shell, a protection module, a push rod and a feedback module, the protection module comprises a thermal separation mechanism, the push rod moves between a first position and a second position, the push rod is provided with a trigger part, the feedback module comprises a circuit board and a microswitch connected to the circuit board, and the surge protection device further comprises a lever, the lever is rotationally assembled between the triggering part of the push rod and the pressing part of the microswitch, before the thermal separation mechanism does not act, the push rod and the thermal separation mechanism are in limiting fit at a first position, the two ends of the lever are in limiting fit with the triggering part and the pressing part respectively, and when the thermal separation mechanism acts, the push rod moves to a second position to be matched with the thermal separation mechanism; the two ends of the lever are separated from the push rod and the microswitch respectively. According to the utility model, the lever is rotatably assembled between the microswitch and the push rod, thereby being suitable for a product with a larger distance between the push rod and the microswitch, and having the advantages of simple structure, convenience in driving and small occupied space.

Description

Technical Field

[0001] The utility model relates to the field of low-voltage electrical appliances, in particular to a surge protector. Background Art

[0002] A surge protector is an electronic device used to provide safety protection for electronic equipment, instruments, and communication lines. With the development of the times and the advancement of technology, lightning protection products have gained attention, and the application of surge protectors is becoming more and more widespread. In the construction of 5G and the upcoming 6G base stations, surge protectors play a key role in safety assurance. Existing surge protectors are generally ordinary guide rail surge protectors and board-mounted surge protectors. Ordinary guide rail surge protectors are large and require cumbersome wiring, while board-mounted surge protectors have high maintenance costs and require the replacement of the entire circuit board when damaged. In addition, although there are a considerable number of 1U structure surge protectors on the market, which have the advantages of easy installation and maintenance and simple wiring, the spatial layout requirements of DC 1+1 products and AC multi-pole products are inconsistent, and they have more internal components and cumbersome coordination. This makes it difficult for manufacturers to take both into account and requires the development of more parts to adapt, which results in high development costs. Utility Model Content

[0003] The purpose of the utility model is to overcome at least one defect of the prior art and provide a surge protector.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model provides a surge protector, comprising at least one protection electrode, the protection electrode comprising a shell, the opposite ends of the shell respectively comprising an operating end and a plug-in terminal, the plug-in terminal being provided with a pair of wiring terminals, a protection module, a push rod and a feedback module being provided in the shell, the protection module being connected to the wiring terminals, the protection module comprising a thermal disengagement mechanism, the push rod being movable between a first position and a second position, the push rod being provided with a triggering portion, the feedback module comprising a circuit board and a micro switch connected to the circuit board, and further comprising a lever, the lever being rotatably assembled between the triggering portion of the push rod and the pressing portion of the micro switch,

[0006] Before the thermal disengagement mechanism is actuated, the push rod and the thermal disengagement mechanism are limitedly matched at the first position, and the two ends of the lever are limitedly matched with the trigger part and the pressing part respectively.

[0007] When the thermal disengagement mechanism is actuated, the push rod moves to the second position to cooperate with the thermal disengagement mechanism, and the two ends of the lever are separated from the push rod and the micro switch respectively.

[0008] Preferably, it comprises at least two protective electrodes assembled in parallel, a communication hole is provided in the middle of the shell, and the circuit boards of two adjacent protective electrodes are connected through the communication hole.

[0009] Preferably, the circuit board includes a first circuit board, the micro switch is arranged on a side of the first circuit board facing the push rod, two adjacent protective electrodes share the same first circuit board, and the first circuit board passes through the connecting hole.

[0010] Preferably, the protection module also includes a protector, the thermal disengagement mechanism includes a limiter and a flexible conductor, the protector is electrically connected to one of the wiring terminals, the limiter is rotatably assembled in the shell, the limiter is welded to an electrode sheet of the protector in a first position, the limiter is rotated to a second position and separated from the protector, and the flexible conductor is connected between the limiter and the other wiring terminal.

[0011] Preferably, the device further comprises an elastic member connected between the push rod and the housing, and the elastic member drives the push rod to move from the first position to the second position.

[0012] Preferably, the feedback module further includes a signal terminal, which is connected to the circuit board and is correspondingly arranged at the plug-in terminal of the housing.

[0013] Preferably, the circuit board includes a first circuit board and a second circuit board connected to each other, the micro switch is arranged on a side of the first circuit board facing the push rod, and the second circuit board is arranged inside the plug-in terminal.

[0014] Preferably, the push rod and the limit member are arranged side by side in the middle of the shell, and the feedback module is arranged in the shell near the wiring terminal, one of the wiring terminals is connected to a first conductive plate, a flexible conductor is connected between the end of the first conductive plate away from the wiring terminal and the limit member, and the other wiring terminal is connected to a second conductive plate, and the first conductive plate and the second conductive plate extend along opposite sides of the feedback module respectively.

[0015] Preferably, the flexible conductor is connected to a side of the limiting component facing away from the protector.

[0016] Preferably, a guide structure is provided in the housing, and the guide structure includes a guide groove and / or a guide portion, and the guide structure limits the push rod from sliding along a straight line.

[0017] Preferably, the operating end is provided with an indication hole, and the push rod is provided with an indication portion, and the indication portion cooperates with the indication hole to indicate the state of the thermal disengagement mechanism.

[0018] Preferably, the push rod includes a push rod body, one end of the push rod body is provided with an abutting inclined surface for abutting with the limit member, the other end of the push rod body is used to connect with the elastic member, one side of the push rod body is provided with an indicator rod, the indicator rod extends in a direction close to the operating end, the end of the indicator rod is provided with an indicating part, a sliding groove is provided on the side of the indicator rod, and the other side of the push rod body is provided with a protruding trigger part.

[0019] Preferably, the lever includes a rotating portion, the lever is rotatably connected to the housing via the rotating portion, end faces of both ends of the lever are parallel to each other, and a line connecting the two ends of the lever to the connecting portion forms an angle.

[0020] Preferably, the limiting member includes an assembly portion, one side of the assembly portion extends radially outward to form a limiting plate, the push rod abuts against one side surface of the limiting plate, and the flexible conductor is connected to the other side of the limiting plate.

[0021] Preferably, the protector includes at least one of a varistor, a discharge tube and a transient suppression diode for surge protection.

[0022] Preferably, the push rod is in sliding engagement with the housing.

[0023] The surge protector of the utility model has a lever rotatably mounted between the micro switch and the push rod. The push rod controls the micro switch through the lever. The utility model is suitable for products with a large distance between the push rod and the micro switch. The utility model has the advantages of simple structure, convenient driving and small space occupation.

[0024] In addition, the signal terminal is set at the plug-in terminal, and the signal connection can be achieved by plugging and unplugging, which is convenient for wiring and feedback of usage status.

[0025] In addition, a guide structure is provided in the housing to limit the movement trajectory of the push rod, thereby ensuring the coordination stability between the push rod and the micro switch.

[0026] In addition, the push rod is provided with an indicator portion to facilitate observation of the status of the thermal disengagement mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a structural diagram of the surge protector in the first embodiment of the present invention when the thermal disconnection mechanism is not actuated;

[0028] Figure 2 This is a structural diagram of the surge protector in the first embodiment of the present utility model when the thermal release mechanism is in operation;

[0029] Figure 3 1 is a schematic structural diagram of a surge protector in the first embodiment of the present invention (including multiple protection electrodes);

[0030] Figure 4This is a schematic structural diagram of the push rod in the first embodiment of the present utility model;

[0031] Figure 5 This is a schematic structural diagram of the push rod in the first embodiment of the present utility model;

[0032] Figure 6 This is a schematic structural diagram of the lever in the first embodiment of the present utility model;

[0033] Figure 7 This is a structural diagram of the surge protector in the second embodiment of the present invention when the thermal disconnection mechanism is not actuated;

[0034] Figure 8 This is a structural diagram of the surge protector in the second embodiment of the present invention when the thermal release mechanism is in operation;

[0035] Figure 9 This is a schematic structural diagram of a push rod in a second embodiment of the present invention;

[0036] Figure 10 This is a circuit diagram of the protector in the surge protector of the utility model;

[0037] Figure 11 This is a circuit diagram of the four-pole surge protector in the utility model;

[0038] Reference numerals:

[0039] 100-housing, 101-plug-in terminal, 102-operating end, 103-indicator hole, 104-locking hole, 105-guide groove, 106-guide part, 107-electrode sheet, 110-protector, 111-push rod, 1110-push rod body, 1111-trigger part, 1112-indicator rod, 1113-indicator part, 1114-slide groove, 1115-limiting hole, 112-elastic member, 113-limiting member, 114-flexible conductor, 115-lever, 1211-first circuit board, 1212-second circuit board, 122-micro switch, 1221-pressing part, 123-signal terminal, 1301-first wiring terminal, 1302-second wiring terminal, 131-first conductive plate, 132-second conductive plate, 141-button, 142-locking member, 143-locking spring. DETAILED DESCRIPTION

[0040] The following embodiments are given in conjunction with the accompanying drawings to further illustrate the specific implementation of the surge protector of the present invention. The surge protector of the present invention is not limited to the description of the following embodiments.

[0041] like Figure 1-3, 6 and 7, the surge protector includes at least one protection electrode, each protection electrode includes a shell 100, the two ends of the shell 100 are respectively used as an operating end 102 and a plug-in terminal 101, at least two wiring sockets are provided at the plug-in terminal 101, the wiring terminal 101 is provided with a pair of wiring terminals, each wiring terminal is correspondingly provided in a wiring socket, thereby realizing plug-in wiring, for the convenience of description, a pair of wiring terminals is divided into a first wiring terminal 1301 and a second wiring terminal 1302, a protection module, a push rod 111 and a feedback module are provided inside the shell 100, wherein the protection The module is connected to the terminal block and is used to realize the protection function. The push rod 111 moves between the first position and the second position. Usually, the push rod 11 and the housing 100 are in sliding fit, that is, the push rod 111 slides between the first position and the second position; the feedback module includes a circuit board and a micro switch 122 connected to the circuit board. The on or off of the micro switch 122 is integrated into the status feedback circuit on the circuit board, so that the feedback module can communicate with the external device to feedback the status of the surge protector. The micro switch 122 and the status feedback circuit can both adopt existing technologies.

[0042] Specifically, the protection module usually includes a protector 110 and a thermal disengagement mechanism. The protector 110 usually includes at least one of a varistor, a discharge tube, a transient suppression diode, etc. Preferably, the protector 110 includes a plastic shell, and a varistor is arranged in the plastic shell. The protector 110 is connected to a terminal (the second terminal 1302), and the thermal disengagement mechanism is connected to another terminal (the first terminal 1301). The push rod 111 slides with the shell 100 to move between a first position and a second position. When the thermal disengagement mechanism is not actuated, the thermal disengagement mechanism is welded to the electrode sheet 107 in the protector 110 with a low-temperature alloy at the first position. After enduring multiple surges, the protector 110 heats up, causing the solder joint between the thermal disengagement mechanism and the electrode sheet 107 to deteriorate, thereby causing the thermal disengagement mechanism to separate from the electrode sheet 107, that is, the protector 110 fails and the thermal disengagement mechanism is actuated. When the thermal disengagement mechanism is in the second position and separated from the protector 110, the thermal disengagement mechanism and the push rod 111 always maintain a limited fit.

[0043] The improvement of the present application is that it also includes a lever 115, which is rotatably assembled between the trigger part 1111 of the push rod 111 and the pressing part 1221 of the micro switch 122. Before the thermal separation mechanism is actuated, the push rod 111 and the thermal separation mechanism are limited in the first position, and the two ends of the lever 115 are respectively limited in the trigger part 1111 and the pressing part 1221. When the thermal separation mechanism is actuated, the push rod 111 slides to the second position to cooperate with the thermal separation mechanism, and the two ends of the lever 115 are respectively separated from the push rod 111 and the micro switch 122.

[0044] In this way, a lever 115 is rotatably installed between the micro switch 122 and the push rod 111, and the push rod 111 controls the micro switch 122 through the lever 115. It is suitable for products with a large distance between the push rod 111 and the micro switch 122, and has the advantages of simple structure, easy driving and small space occupation.

[0045] Furthermore, the surge protector is provided with at least two protection electrodes, and two adjacent protection electrodes are assembled in parallel. A connecting hole is provided in the middle of the shell 100, and the circuit boards of the two adjacent protection electrodes are connected through the connecting hole. That is, the surge protector can be provided with one or two or more protection electrodes. When more than two protection electrodes are provided, the two protection electrodes are assembled in parallel, a connecting hole is provided in the middle of the shell 100, and the circuit board is assembled in the positioning groove of the through hole. The thermal disengagement mechanism of each electrode is linked to the circuit board through the micro switch 122.

[0046] Specifically, the protection module also includes a protector 110, and the thermal separation mechanism includes a limiter 113 and a flexible conductor 114, wherein the protector 110 is electrically connected to one of the terminals (the second terminal 1302), the limiter 113 is a metal conductive member, the limiter 113 is rotatably assembled in the housing 100, and the flexible conductor 114 is connected between the limiter 113 and the other terminal (the first terminal 1301). When the thermal separation mechanism does not fail, the limiter 113 is welded to the electrode sheet 107 of the protector 110 at the first position, and the two ends of the lever 115 are respectively in contact with the trigger part 1111 and the pressing part 1221. At this time, the signal feedback surge output by the feedback module The protector and thermal disconnect mechanism are still in the non-actuated state. When a surge occurs, that is, when the thermal disconnect mechanism is activated, the temperature of the protector 110 rises. After multiple surges, the protector 110 deteriorates, and the solder joint between the limiter 113 and the electrode sheet 107 of the protector 110 deteriorates, causing the limiter 113 to separate from the protector 110. The push rod 111 moves to the second position and still maintains a limited fit with the limiter 113, thereby driving the limiter 113 to rotate to the second position. At this time, the two ends of the lever 115 are separated from the trigger part 1111 and the pressing part 1221 respectively, and the micro switch 122 switches the state. At this time, the signal output by the feedback module feedbacks that the surge protector has failed and the thermal disconnect mechanism has been activated.

[0047] Preferably, it also includes an elastic member 112, which is connected between the push rod 111 and the shell 100. The elastic member 112 drives the push rod 111 to move from the first position to the second position. That is, when the thermal disengagement mechanism is not actuated, the limiting cooperation between the push rod 111 and the limiting member 113 stores energy for the elastic member 112. When the thermal disengagement mechanism is actuated, the elastic member 112 releases energy to drive the push rod 111 to move from the first position to the second position. As the push rod 111 moves, the lever 115 rotates, so that the two ends of the lever 115 are separated from the trigger part 1111 and the pressing part 1221 respectively.

[0048] This structure in which the push rod 111 indirectly triggers the micro switch 122 through the lever 115 is suitable for products with a large distance between the push rod 111 and the micro switch 122, and has the advantages of simple structure, convenient driving and small space occupation. Of course, the triggering part 1111 of the push rod 111 can also directly cooperate with the pressing part 1221 of the micro switch 122, that is, the pressing part 1221 of the micro switch 122 is located on the moving track of the triggering part 1111. Preferably, the triggering part 1111 extends in the direction close to the micro switch 122. Before the thermal disconnection mechanism is actuated, the triggering part 1111 abuts against the pressing part 1221 of the micro switch 122. When a surge occurs, that is, when the thermal disconnection mechanism is actuated, the components inside the protector 110 act quickly to discharge the overvoltage. When it is put to the ground, at this time, the solder joint between the electrode sheet 107 of the protector 110 and the limit member 113 deteriorates to a certain extent due to repeated temperature rise during surges and then melts. The elastic member 112 releases its elastic force to drive the push rod 111 to move, and the push rod 111 drives the limit member 113 to rotate to the second position. At the same time, the trigger part 1111 of the push rod 111 is separated from the pressing part 1221, and the micro switch 122 switches the state. The feedback module outputs a signal that the surge protector and the thermal separation mechanism have been actuated. After the thermal separation mechanism is actuated, the trigger part 1111 and the pressing part 1221 of the push rod 111 are always in a separated state. This structure cooperates more stably with the micro switch 122, and is also suitable for surge protectors with a small space reserved between the push rod 111 and the micro switch 122.

[0049] Further, such as Figure 1 、 2 As shown, the feedback module also includes a signal terminal 123, which is connected to the circuit board. Preferably, the signal terminal 123 also adopts a plug-in connection. Correspondingly, the plug-in terminal 101 is provided with a signal socket corresponding to the signal terminal 123. In this way, when the surge protector is plugged in and out, the communication wiring can be completed at the same time, which simplifies the wiring process.

[0050] Furthermore, a guide structure is provided in the housing 100 , wherein the guide structure includes a guide groove 105 and / or a guide portion 106 . The guide structure limits the push rod 111 from sliding along a straight line, thereby ensuring the matching stability between the push rod 111 and the micro switch 122 .

[0051] In addition, the push rod 111 is provided with an indicating portion 1113. Preferably, the indicating portion 1113 is closer to the operating end 102, and the operating end 102 is correspondingly provided with an indicating hole 103. The indicating portion 1113 moves with the push rod 111 and is opposite to or offset from the indicating hole 103. The indicating portion 1113 and the indicating hole 103 are relative to each other for observing the status of the thermal separation mechanism.

[0052] Combine Figure 1-6, 10 and 11 provide a first embodiment of a surge protector.

[0053] like Figure 1-3 As shown, the surge protector includes at least one protection electrode, each protection electrode includes a shell 100, and the opposite ends of the shell 100 are an operating end 102 and a plug-in terminal 101, respectively. The plug-in terminal 101 is provided with a pair of wiring sockets, and each wiring socket is correspondingly equipped with a wiring terminal. In this embodiment, the wiring terminal is a busbar clamp, and wiring can be achieved by plugging and unplugging the surge protector. A signal socket is provided between the pair of wiring sockets, and a signal terminal 123 is provided in the signal socket. The signal terminal 123 adopts a structure similar to that of the busbar clamp, which facilitates plug-in wiring; the operating end 102 is provided with an indicator hole 103 and a button hole, and the side wall of the shell 100 connected between the operating end 102 and the plug-in terminal 101 is provided with a locking hole 104.

[0054] A protection module and a feedback module are provided inside the shell 100, wherein the protection module is connected to the wiring terminal and is used to protect the circuit when a surge occurs. The feedback module is connected to the signal terminal 123 and communicates with the external device through the signal terminal 123, thereby enabling the feedback module to output a feedback signal to the outside. The feedback module usually includes a circuit board and a micro switch 122 arranged on the circuit board.

[0055] Specific as Figure 1-3As shown, a push rod 111 is further provided inside the housing 100, and the protection module includes a protector 110 and a thermal disengagement mechanism, wherein the protector 110 adopts the existing technology and is connected to the terminal block, and the thermal disengagement mechanism includes a limiter 113, an elastic member 112, a flexible conductor 114 and a lever 115, wherein the push rod 111 and the limiter 113 are arranged side by side in the middle of the housing 100, the push rod 111 is slidably provided on the housing 100, and the elastic member 112 is connected between the push rod 111 and the housing. Preferably, the housing 100 is provided with a means for limiting the movement trajectory of the push rod 111 The guide groove 105, the push rod 111 moves in a straight line in the guide groove 105, the limit member 113 is rotatably assembled in the housing 100, and the push rod 111 and the limit member 113 are always kept in contact by the elastic member 112. Preferably, the elastic member 112 is a spring, and the elastic member 112 is assembled in the guide groove 105, that is, one end of the push rod 111 is in contact with the limit member 113, and the elastic member 112 is connected between the other end of the push rod 111 and the guide groove 105, and the push rod 111 is driven by the elastic member 112 to move in a straight line in the guide groove 105, and the limit member 113 is facing away from the push rod 111. A flexible conductor 114 is connected to one side of the push rod 111, and the flexible conductor 114 is electrically connected to a terminal (a first terminal 1301). In this embodiment, before the thermal separation mechanism is actuated, the limiter 113 and the push rod 111 are located in the first position, and the limiter 113 is welded to an electrode sheet 107 of the protector 110. Preferably, the electrode sheet 107 and the flexible conductor 114 correspond to opposite sides of the limiter 113, respectively. After enduring multiple surges, the limiter 113 degrades and the welding point between the electrode sheet 107 melts, that is, an electrical shock occurs. When the heat disengagement mechanism is activated, the elastic member 112 releases energy to drive the push rod 111 to move to the second position. At the same time, the limit member 113 is driven by the push rod 111 to rotate to the second position; the lever 115 is rotatably arranged between the push rod 111 and the micro switch 122 of the feedback module, and the push rod 111 triggers the micro switch 122 through the lever 115. The lever 115 corresponds to the middle part of the push rod 111. Preferably, a trigger part 1111 is provided in the middle part of the push rod 111, and the lever 115 is rotatably assembled between the trigger part 1111 and the pressing part 1221 of the micro switch 122.

[0056] Furthermore, in this embodiment, a conductive plate is connected between the protection module and the terminal. For the convenience of description, the conductive plate is divided into a first conductive plate 131 and a second conductive plate 132. The flexible conductor 114 is connected to the terminal (first terminal 1301) on the same side of the shell 100 through the first conductive plate 131, and the other terminal (second terminal 1302) is connected to the protector 110 through the second conductive plate 132.

[0057] The feedback module is arranged in the housing 100 near the terminal 101, and the feedback module is located between the first conductive plate 131 and the second conductive plate 132. It can also be understood that the first conductive plate 131 and the second conductive plate 132 extend along the opposite sides of the feedback module in a direction away from the plug-in terminal 101. The feedback module includes a circuit board and a micro switch 122 connected to the circuit board, wherein the circuit board is connected to the signal terminal 123. Preferably, the circuit board includes a first circuit board 1211 and a second circuit board 1212 connected to each other, and the first circuit board 1211 is arranged in the housing. 100, so as to avoid the integrated circuit board from occupying a large space. At the same time, it is also convenient to assemble and replace the circuit board. The micro switch 122 is arranged on the side of the first circuit board 1211 facing the lever 115, so that the pressing part 1221 of the micro switch 122 faces the lever 115. The micro switch 122 adopts the existing technology. The pressing part 1221 of the micro switch 122 is an elastic reed. The second circuit board 1212 is arranged inside the plug-in terminal 101 and is connected to the signal terminal 123. Of course, only one circuit board or multiple interconnected circuit boards can be set.

[0058] like Figure 1 As shown, before the thermal disengagement mechanism is actuated, one end of the push rod 111 maintains contact with the limiter 113, the elastic member 112 is compressed in the guide groove 105, the limiter 113 is welded to an electrode sheet 107 of the protector 110, and the limiter 113 cannot be driven to rotate by the elastic member 112. At this time, the two ends of the lever 115 are in contact with the triggering portion 1111 and the pressing portion 1221 respectively. Since the pressing portion 1221 is a spring, the friction between one end of the lever 115 and the triggering portion 1111 and the elastic force between the other end of the lever 115 and the pressing portion 1221 make the lever 115 stationary between the push rod 111 and the micro switch 122, and the feedback module outputs to the outside that the surge protector and the thermal disengagement mechanism are in an effective state; Figure 2 As shown, when a surge occurs, that is, when the thermal disengagement mechanism is activated, the temperature rise of the protector 110 when it is subjected to the surge causes the solder joint between the limit member 113 and the electrode sheet 107 of the protector 110 to melt, and the elastic member 112 releases the elastic force to drive the push rod 111 to move in the guide groove 105. The trigger part 1111 separates from one end of the lever 115 during the movement, and the pressing part 1221 releases the elastic force to drive the lever 115 to rotate and separate from the other end of the lever 115. The feedback module outputs to the outside that the surge protector and the thermal disengagement mechanism are in the action state. At the same time, the push rod 111 drives the limit member 113 to rotate, that is, when the push rod 111 moves to the second position, it drives the limit member 113 to rotate to the second position. After the thermal disengagement mechanism is activated, the trigger part 1111 and the pressing part 1221 of the push rod 111 are always in a separated state.

[0059] Furthermore, the push rod 111 can also be provided with an indicator portion 1113, which extends in a direction close to the operating end 102. The indicator portion 1113 corresponds to the indicator hole 103 opened at the operating end 102, and is used to indicate the state of the thermal disengagement mechanism. If the length of the part of the push rod 111 extending toward the operating end 102 is large, preferably, a guide portion 106 is provided in the shell 100, and a slide groove 1114 is correspondingly provided in the extended portion of the push rod 111. The slide groove 1114 cooperates with the guide portion 106 to limit the movement trajectory of the push rod 111 to prevent the push rod 111 from sliding. In this embodiment, before the thermal disengagement mechanism is actuated, the indicator portion 1113 closes the indicator hole 103. When and after the thermal disengagement mechanism is actuated, the indicator portion 1113 is misaligned with the indicator hole 103, thereby indicating that the thermal disengagement mechanism is actuated. Preferably, the guide portion 106 and the indicator portion 1113 are at least different colors, which can be more convenient to observe.

[0060] In this embodiment, the protector 110 in each protective pole adopts the existing technology. The protector 110 usually includes a plastic shell. The limiter 113 is rotatably assembled on the plastic shell of the protector 110, and the push rod 111 slides along the outer side of the plastic shell. Of course, the limiter 113 can also be rotatably assembled on the shell 100, and the push rod 111 is slidably set on the shell 100.

[0061] In this embodiment, if Figure 3 As shown, the surge protector includes four parallel protection electrodes, each of which has the same structure. A connecting hole is provided in the middle of the shell 100, and the circuit boards of two adjacent protection electrodes are connected together through the connecting hole. Alternatively, all protection electrodes share a circuit board, that is, a common first circuit board 1211 and / or a second circuit board 1212.

[0062] In this embodiment, if Figure 10 As shown, the four protection electrodes share the same first circuit board 1211, on which a surge protection circuit is correspondingly provided. Each protection electrode is provided with a push rod 111, a micro switch 122, and a thermal disconnection mechanism. Furthermore, the push rod 111 and the micro switch 122 may not be provided in all four protection electrodes. For example, when the protector in one of the protection electrodes is a gas discharge tube with a large through-current, the electrode may not be provided with the corresponding thermal disconnection mechanism, push rod 111, and micro switch 122. The remaining electrodes are still provided with a thermal disconnection mechanism, push rod 111, and micro switch 122 to achieve linkage between the electrodes.

[0063] like Figure 10 As shown, the varistors in the protectors 110 of the three protection poles and the discharge tube of the protector 110 in the other protection pole are connected to the surge protection circuit, which can adopt the existing technology. Figure 9As shown, in a case where there is only one protection electrode, a varistor and a discharge tube are provided in the protector 110 thereof.

[0064] In this embodiment, each protection electrode further includes a locking mechanism, which can be implemented using existing technology. Figure 1-3 In the embodiment, the locking mechanism includes a button 141, a locking member 142 and a locking hole 104 opened on the housing 100. The button 141 is slidably assembled in the button hole of the operating end 102. Preferably, an anti-falling structure is provided between the button 141 and the button hole. The anti-falling structure limits the pressing stroke of the button 141 to prevent the button 141 from being completely pulled out of the button hole or being completely pressed into the housing 100. The locking member 142 is rotatably assembled in the housing 100, and one end of the locking member 142 is connected to the driving connection of the button 141. Then, as the button 141 is pressed and pulled, the locking piece 142 can be driven to rotate. A locking portion is provided at the other end of the locking piece 142, and the locking portion slides out of the locking hole 104 or retracts from the locking hole 104 into the shell 100. Preferably, the locking piece 142 is also connected to a locking spring 143, which is connected to the shell 100 and the side of the locking portion facing away from the locking hole 104. The locking portion is driven by the elastic force of the locking spring 143 and is kept in a state of extending out of the locking hole 104.

[0065] Combine Figure 1-5 A push rod 111 structure is provided for use in this embodiment. Figure 4 As shown, the push rod 111 includes a bar-shaped push rod body 1110, one end of the push rod body 1110 is provided with an abutting inclined surface for abutting with the limit member 113, the abutting inclined surface makes one end of the push rod body 1110 trapezoidal, the other end of the push rod 111 is used to connect with the elastic member 112, and one side of the push rod body 1110 is provided with an indicator rod 1112 extending toward the operating end 102. In the figure, the length of the indicator rod 1112 is much greater than the length of the push rod body 1110, the end of the indicator rod 1112 is provided with an indicating portion 1113, and the indicator rod 1112 is provided with a sliding groove 1114. A guide portion 106 is provided in the housing 100, and the guide portion 106 is spaced relative to the indicator hole 103 for abutting with the sliding groove 11 14 slides together, thereby limiting the movement trajectory of the indicator rod 1112. In this embodiment, the indicating portion 1113 is formed by bending the end of the indicator rod 1112, so that one end of the indicator rod 1112 forms a hook-shaped structure. The outer side of the hook-shaped structure faces the indicating hole 103 as the indicating portion 1113, and an indicating mark can be set. The inner side of the hook-shaped structure slides with the guide portion 106. It can be considered that the hook-shaped structure is slidably hung on the guide portion 106. In this case, the slide groove 1114 can be omitted; the other side of the push rod body 1110 is provided with a protruding trigger portion 1111. In the figure, the end of the trigger portion 1111 is blunt and round, which is convenient for cooperation with one end of the lever 115; preferably, as Figure 5As shown, a limiting hole 1115 is further provided at one end of the push rod body 1110 , and one end of the elastic member is limitedly assembled in the limiting hole 1115 .

[0066] Combine Figure 6 A lever 115 structure is provided for use in this embodiment. Figure 5 As shown, the lever 115 includes a rotating portion, and the lever 115 is rotatably connected to the housing 100 through the rotating portion. The end faces of the lever 115 are parallel to each other, and the lines connecting the two ends of the lever 115 to the rotating portion are at an angle, that is, the lever 115 as a whole is a bent rod structure with a slightly bent middle portion.

[0067] Combine Figure 1-3 A limit member 113 structure is provided for use in this embodiment. The limit member 113 includes a circular shaft-shaped assembly portion. The limit member 113 is rotatably assembled in the shell 100 through the assembly portion. One side of the assembly portion extends radially outward to form a limit plate. One side surface of the limit plate 113 abuts against the push rod 111 and is welded to an electrode sheet 107 of the protector 110. The other side of the limit plate is connected to the flexible conductor 114.

[0068] Combine Figure 7-11 A second embodiment of a surge protector is provided.

[0069] The surge protection mechanism includes at least one protection electrode, which includes a housing 100, a locking mechanism, a protection module, a feedback module, and wiring terminals. In this embodiment, except for the thermal disconnect mechanism in the protection module, the remaining components are the same as those in the first embodiment. Of course, the protection electrodes in this embodiment can also be assembled in parallel, as in the first embodiment.

[0070] In this embodiment, the thermal disengagement mechanism includes the same limit member 113, elastic member 112 and flexible conductor 114 as those in the first embodiment. Unlike the first embodiment, the thermal disengagement mechanism no longer has a lever 115. The trigger portion 1111 of the push rod 111 directly cooperates with the pressing portion 1221 of the micro switch 122. The trigger portion 1111 extends in a direction close to the micro switch 122, and the pressing portion 1221 is located on the moving trajectory of the trigger portion 1111. Figure 7 As shown, before the thermal separation mechanism is activated, the trigger portion 1111 abuts against the pressing portion 1221 of the micro switch 122. Figure 8As shown, when a surge occurs, that is, when the thermal separation mechanism is activated, the solder joint between the limit member 113 and the electrode sheet 107 of the protector 110 melts, and the elastic member 112 releases the elastic force at this time to drive the push rod 111 to move from the first position to the second position, so that the triggering part 1111 of the push rod 111 is separated from the pressing part 1221. At the same time, the push rod 111 drives the limit member 113 to rotate to the second position. After the thermal separation mechanism is activated, the triggering part 1111 and the pressing part 1221 of the push rod 111 are always in a separated state, and the push rod 111 and the limit member 113 are always in the second position and abut against each other.

[0071] Combine Figure 9 A push rod 111 structure is provided for use in this embodiment. The push rod 111 includes a bar-shaped push rod body 1110. One end of the push rod body 1110 is provided with an abutting inclined surface for abutting against a limit member 113. The other end of the push rod body 1110 is used to connect with an elastic member 112. One side of the push rod body 1110 is provided with an indicator rod 1112 extending toward the operating end 102. The end of the indicator rod 1112 is provided with an indicator portion 1113, and a slide groove 1114 is provided in the middle of the indicator rod 1112. The other side of the push rod body 1110 is provided with a trigger portion 1111. The trigger portion 1111 protrudes and extends toward the terminal 101. The middle portion of the trigger portion 1111 is bent at least once so that the trigger portion 1111 is a stepped rod body. The extension length of the trigger portion 1111 can be adjusted according to actual conditions. Of course, the shape of the trigger portion 1111 is not limited to a stepped structure, and can also be other shapes that facilitate the operation of the pressing portion 1221.

[0072] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, or are conventionally placed directions or positional relationships during use. They are intended solely for ease of description and do not imply that the devices or components referred to must have a specific direction. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely for distinction and description and should not be construed as indicating relative importance.

[0073] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. A surge protector, comprising at least one protection electrode, the protection electrode comprising a housing (100), the housing (100) having an operating end (102) and a plug-in terminal (101) at opposite ends thereof, the plug-in terminal (101) being provided with a pair of connection terminals, the housing (100) being provided with a protection module, a push rod (111) and a feedback module, the protection module being connected to the connection terminals, the protection module comprising a thermal disengagement mechanism, the push rod (111) being movable between a first position and a second position, the push rod (111) being provided with a triggering portion, the feedback module comprising a circuit board and a micro switch (122) connected to the circuit board, Its characteristics are: The device further comprises a lever (115), wherein the lever (115) is rotatably mounted between a trigger portion (1111) of the push rod (111) and a pressing portion (1221) of the micro switch (122). Before the thermal disengagement mechanism is activated, the push rod (111) is limitedly engaged with the thermal disengagement mechanism at the first position, and the two ends of the lever (115) are respectively limitedly engaged with the trigger portion (1111) and the pressing portion (1221). When the thermal separation mechanism is activated, the push rod (111) moves to the second position to cooperate with the thermal separation mechanism, and the two ends of the lever (115) are separated from the push rod (111) and the micro switch (122) respectively.

2. The surge protector according to claim 1, wherein: It comprises at least two protective electrodes assembled in parallel, a communication hole is provided in the middle of the housing (100), and the circuit boards of two adjacent protective electrodes are connected through the communication hole.

3. The surge protector according to claim 2, wherein: The circuit board comprises a first circuit board (1211), the micro switch (122) is arranged on a side of the first circuit board (1211) facing the push rod (111), two adjacent protective electrodes share the same first circuit board (1211), and the first circuit board (1211) passes through the connecting hole.

4. The surge protector according to claim 1, wherein: The protection module further comprises a protector (110); the thermal separation mechanism comprises a limiting member (113) and a flexible conductor (114); the protector (110) is electrically connected to one of the connection terminals; the limiting member (113) is rotatably assembled in the housing (100); the limiting member (113) is welded to an electrode sheet (107) of the protector (110) at a first position; the limiting member (113) is rotated to a second position and separated from the protector (110); and the flexible conductor (114) is connected between the limiting member (113) and the other connection terminal.

5. The surge protector according to claim 1, wherein: The invention also includes an elastic member (112), wherein the elastic member (112) is connected between the push rod (111) and the housing (100), and the elastic member (112) drives the push rod (111) to move from the first position to the second position.

6. The surge protector according to claim 1, wherein: The feedback module further comprises a signal terminal (123), wherein the signal terminal (123) is connected to the circuit board and is correspondingly arranged at the plug-in terminal (101) of the housing (100).

7. The surge protector according to claim 1, wherein: The circuit board comprises a first circuit board (1211) and a second circuit board (1212) connected to each other, the micro switch (122) is arranged on a side of the first circuit board (1211) facing the push rod (111), and the second circuit board (1212) is arranged inside the plug-in terminal (101).

8. The surge protector according to claim 1, wherein: The push rod (111) and the limiting member (113) are arranged side by side in the middle of the shell (100), and the feedback module is arranged in the shell (100) near the terminal (101), one of the terminals is connected to a first conductive plate (131), a flexible conductor (114) is connected between the end of the first conductive plate (131) away from the terminal and the limiting member (113), and the other terminal is connected to a second conductive plate (132), and the first conductive plate (131) and the second conductive plate (132) extend along opposite sides of the feedback module respectively.

9. The surge protector according to claim 8, characterized in that: The flexible conductor (114) is connected to a side of the limiting member (113) facing away from the protector (110).

10. The surge protector according to claim 1, wherein: A guide structure is provided in the housing (100), the guide structure comprising a guide groove (105) and / or a guide portion (106), and the guide structure restricts the push rod (111) from sliding along a straight line.

11. The surge protector according to claim 1, characterized in that: The operating end (102) is provided with an indication hole (103), and the push rod (111) is provided with an indication portion (1113). The indication portion (1113) cooperates with the indication hole (103) to indicate the state of the thermal disengagement mechanism.

12. The surge protector according to claim 1, wherein: The push rod (111) includes a push rod body (1110), one end of the push rod body (1110) is provided with an abutting inclined surface for abutting with a limit member (113), the other end of the push rod body (1110) is used to connect with an elastic member (112), one side of the push rod body (1110) is provided with an indicator rod (1112), the indicator rod (1112) extends in a direction close to the operating end (102), the end of the indicator rod (1112) is provided with an indicator portion (1113), a sliding groove (1114) is provided on the side of the indicator rod (1112), and the other side of the push rod body (1110) is provided with a protruding trigger portion (1111).

13. The surge protector according to claim 1, wherein: The lever (115) includes a rotating portion, and the lever (115) is rotatably connected to the housing (100) via the rotating portion. The end faces of both ends of the lever (115) are parallel to each other, and the lines connecting the two ends of the lever (115) to the connecting portion form an angle.

14. The surge protector according to claim 4, characterized in that: The limiting member (113) comprises an assembly portion, one side of which extends radially outward to form a limiting plate, the push rod (111) abuts against a surface of one side of the limiting plate, and the flexible conductor (114) is connected to the other side of the limiting plate.

15. The surge protector according to claim 4, characterized in that: The protector (110) includes at least one of a varistor, a discharge tube and a transient suppression diode for surge protection.

16. The surge protector according to claim 1 or 10, characterized in that: The push rod (111) is in sliding engagement with the housing (100).

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