CN220172853U

CN220172853U - On-board surge protector

Info

Publication number: CN220172853U
Application number: CN202321124307.3U
Authority: CN
Inventors: 黄建芳; 顾陈超
Original assignee: Changzhou Chuangjie Lightning Protection Co ltd
Current assignee: Changzhou Chuangjie Lightning Protection Co ltd
Priority date: 2023-05-11
Filing date: 2023-05-11
Publication date: 2023-12-12
Anticipated expiration: 2033-05-11

Abstract

The utility model discloses an on-board surge protector, which comprises a shell, wherein the shell comprises an inner inserting core with a bearing function, an arc shielding part which rotates by utilizing a cylindrical fulcrum on the inner inserting core and acts by spring force, a remote signaling alarm device for providing remote signaling signal output, a surge protector element for bearing surge energy, a first main electrode and a second main electrode which are used for connecting plates for bearing surge energy, and a separating part which is integrally formed on the second main electrode and is connected with the surge protector element through soldering tin. The structure has the characteristics of compact structure, small product volume and capability of meeting the requirements of power integration, miniaturization and power maximization of the whole power supply.

Description

On-board surge protector

Technical Field

0001. The utility model relates to the technical field of overvoltage and lightning protection, in particular to an on-board surge protector.

Background

0002. A surge protector is a protector for protecting electronic products from overvoltage, lightning current surge. In general, an electronic surge protection element such as a varistor, a gas discharge tube, etc. is accommodated in an insulating housing, one of connection terminals of the varistor is directly led to the outside of the insulating housing, one of the connection terminals is provided as an electrical connection contact member of the surge protector, and the other is led to an electrical connection contact member outside the insulating housing, and it is necessary to be connected to a second connection terminal of the varistor and a mechanical disengagement mechanism operable after melting solder by temperature, so that the second connection terminal can be effectively isolated by the mechanical disengagement mechanism when the varistor has a high voltage or current flowing therethrough and melts the solder, so that the circuit is effectively disconnected, protecting the electronic product from damage due to overvoltage and lightning current.

0003. However, the conventional pluggable (or track-mounted) surge protector has large overall occupied space and large overall volume, and because the spring needs to be arranged inside the surge protector to reset the arc shielding part, the spring inside the conventional structure is easy to deform after long-time use to influence the reset effect, so that the problem of failure occurs, and the surge protector is not suitable for increasingly miniaturized equipment requirements, so that improvement is needed.

Disclosure of Invention

0004. The utility model aims to provide an on-board surge protector, which aims to solve the problems that the prior surge protector provided in the background art is huge in whole volume, and an internal spring is easy to deform after long-time use to influence a reset effect and cause failure.

0005. In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an on-board surge protector, includes the casing, has interpolation core, spring, the arc piece that hides that bear the weight of the function, can provide remote signaling alarm device of long-range remote signaling signal output, can bear surge protector component and the second main electrode of surge energy, its characterized in that: the inner inserting core is provided with a first surface, a drawer type second surface, a stop rib block, a spring operation auxiliary groove, a guide groove, a limit rib block, a clamping groove and a terminal opening; the spring operation auxiliary groove part is positioned in the guide groove, the surge protector element is arranged in the second surface of the inner inserting core, a first main electrode and a terminal are arranged on the surge protector element, a pivot is arranged on the first surface, the arc shielding piece can rotate around the pivot, one end of the arc shielding piece is abutted against the spring to realize resetting, the remote signaling alarm device comprises a first remote signaling electrode and a second remote signaling electrode, the second main electrode comprises an elastic sheet, and the end part of the elastic sheet and an end surface boss on the terminal are connected through a welding material to form a function of generating a thermal tripping effect through temperature melting; the back of shielding the arc spare is provided with the guide bar that the appearance is curved cylinder, the guide bar is unanimous with the direction of guide way, the one port joint of spring is on the spacing muscle piece in the guide way, and another port cover of spring is on the guide bar on shielding the arc spare, can make the spring produce elasticity in the spring action in-process and can normally release elasticity in the supplementary recess of spring operation to guarantee to hide the arc spare and be rotatory profile driven validity.

0006. Preferably, the terminal is further provided with an end face, the end face is connected to the second plane of the surge protector element through a welding material, the terminal penetrates through the terminal opening and is flush with the first surface (a) of the interposer, the end plane of the first main electrode is connected to the first plane of the surge protector element through a welding material, the lead-out terminal of the first main electrode is clamped in the clamping groove of the interposer and protrudes to the outside of the interposer, the first lead-out terminal of the second main electrode is clamped in the guiding groove of the interposer and protrudes to the outside of the interposer, the arc shielding member is arranged on a pivot of the first surface of the interposer with a bearing function, the spring is arranged in the guiding groove of the first surface of the interposer with a bearing function, and the first remote signaling electrode and the second remote signaling electrode are respectively arranged in the first remote signaling electrode mounting frame and the second remote signaling electrode mounting frame clamped on the second surface of the interposer and protrude to the outside of the interposer.

0007. Preferably, square holes are formed in two sides of the shell, and the square holes and the two guide protruding blocks on the inner inserting core form matched locking type assembly.

0008. Preferably, the second main electrode is an integrally formed elastic metal part, and further comprises a second leading-out terminal, wherein the second leading-out terminal can be matched with the port part on the arc shielding part to realize a limit stop.

0009. Preferably, the first remote signaling electrode and the second remote signaling electrode both belong to metal pieces with elastic functions, the first remote signaling electrode comprises an integrally formed elastic support, the elastic support is positioned in the direction of the contact end face of the second remote signaling electrode, when the port component on the arc shielding component is limited and stopped by the second leading-out terminal on the second main electrode, the protruding surface on the arc shielding component is in pressure connection with the elastic support on the first remote signaling electrode, so that the elastic support is in contact with the contact end face of the second remote signaling electrode, and a remote signaling signal output in a normally closed state is formed; and when the end part of the elastic piece is sprung out and separated from the end surface boss on the terminal, the limit stop function of the second leading-out terminal on the second main electrode is lost, the arc shielding piece is driven by a rotary profile on the pivot on the first surface of the inner inserting core under the elastic action of the spring, the pressing force of the protruding surface on the arc shielding piece is released, and the elastic support is separated from the end surface of the contact, so that a remote signaling signal output in a normally open state is formed.

0010. Preferably, the arc shielding member is driven to be in contact with the stop rib block of the inner insertion core with the bearing function in a rotary profile under the elastic force of the spring, so that the effective and reliable isolation and arc shielding function is generated.

0011. Preferably, the surge protector element is a metal oxide varistor or a gas discharge tube.

0012. Preferably, the limit rib blocks are used for clamping one port of the spring in the guide groove, so that the spring is prevented from tilting after being compressed.

0013. Preferably, the peripheral shape of the end face boss on the terminal is in a close fit with the terminal opening of the interposer having a bearing function.

0014. Compared with the prior art, the utility model has the beneficial effects that:

1. the piezoresistor is arranged in the interpolation core with the bearing function, the first main electrode of the piezoresistor directly protrudes out of the shell to be connected with the PCB, the end face boss of the other connecting terminal of the piezoresistor directly penetrates through the opening groove of the interpolation core and is flush with the surface of the interpolation core, the end face boss is tightly assembled and matched with the opening groove of the interpolation core, the sealing effect is similar to that of a hole and a hole plug, and the sealing effect can be realized when the sealing material is required to be used for filling and sealing in the later period, so that no glue overflow can be prevented from being caused to the first surface of the interpolation core with the bearing function; in addition, the end face boss is directly led out from the piezoresistor body, is set to minimize the distance between the end face boss and the piezoresistor body, and is set to be parallel to the piezoresistor body;

2. the second main electrode is an integrally formed elastic metal part and comprises a first leading-out terminal, an elastic sheet, an end part and a second leading-out terminal, when the attached welding material is melted under the temperature, the second main electrode can be separated from an end face boss on the terminal by utilizing the self elastic force;

3. under the elastic force of the spring, the arc shielding piece is driven to be in contact with the stop rib block of the inner insertion core with the bearing function in a rotary profile mode, and therefore effective and reliable arc shielding function is achieved.

0015.4 the back of the guide rod on the arc shielding piece is a cylinder with an arc shape, is consistent with the guide direction of the guide groove on the inner inserting core with a bearing function, and can be sleeved in the inner ring of the spring, so that the spring can normally release the elastic force in the auxiliary groove for the spring to operate in the process of generating the elastic force, and the arc shielding piece is effectively driven in a rotary profile; the spring is not deformed and fails after long-time use,

5. the first remote signaling electrode and the second remote signaling electrode both belong to metal pieces with elastic functions, the first remote signaling electrode comprises an integrally formed elastic support which is positioned in the direction of the contact end face of the second remote signaling electrode, when the port component on the arc shielding component is limited and stopped by the second leading-out terminal on the second main electrode, the protruding surface on the arc shielding component is in press connection with the elastic support on the first remote signaling electrode, so that the elastic support is in contact with the contact end face of the second remote signaling electrode, and a remote signaling signal output in a normally closed state is formed; when the end part of the elastic piece is sprung out and separated from the end face boss on the terminal, the limit stop function of the second leading-out terminal on the second main electrode is lost, the arc shielding piece is driven in a rotary profile on the pivot fulcrum on the first surface of the inner inserting core under the elastic action of the spring, the pressing force of the protruding surface on the arc shielding piece is released, and the elastic support is separated from the end face of the contact, so that a normally-open state output remote signaling signal is formed;

6. therefore, the whole structure has compact structure and smaller product volume, can meet the requirements of integration, miniaturization and power maximization of the whole power supply, and the pins can be directly welded on the PCB.

Drawings

0016. Fig. 1 is an exploded view of the surge protector of the present utility model.

0017. Fig. 2 is a schematic diagram showing an exploded structure of the interposer, the terminal, the surge protector element, and the first main electrode in the present embodiment.

0018. Fig. 3 is a schematic structural diagram of the surge protector in a normal operation state according to the present utility model.

0019. Fig. 4 is a schematic structural diagram of a failure state of the surge protector of the present utility model.

0020. Fig. 5 is a schematic structural view of an interposer.

0021. In the figure: the electric surge protector comprises a shell 1, an inner inserting core 2, an arc shielding piece 3, a spring 4, a first main electrode 5, a first remote signaling electrode 6, a second remote signaling electrode 7, a second main electrode 8, a surge protector element 9, a terminal 10, a first surface 2-A, a second surface 2-B, a stop rib block 2-1, a spring operation auxiliary groove 2-3, a guide groove 2-4, a limit rib block 2-5, a first remote signaling electrode mounting frame 2-6, a guide lug 2-7, a pivot 2-8, a terminal opening 2-10, a second remote signaling electrode mounting frame 2-11, a clamping groove 2-C, a first leading-out terminal 8-1, a second leading-out terminal 8-4, an elastic piece 8-2, an end boss 10-1, a guide rod 3-4, an end face 10-2, a second plane 9-2, a first plane 9-1, a square hole 1-1, the second leading-out terminal 8-4, an elastic support 6-1, a contact end face 7-1, a port part 3-1 and a protruding face 3-5.

Description of the embodiments

0022. For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments of the present utility model will be clearly and completely described in the following in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without inventive faculty, are intended to be within the scope of the present utility model, based on the embodiments of the present utility model.

Examples

0023. Referring to fig. 1-5, the on-board surge protector provided in this embodiment includes a housing 1, an inner core 2 with a bearing function, a spring 4, an arc shielding member 3, a remote signaling alarm device capable of providing remote signaling signal output, a surge protector element 9 capable of bearing surge energy, and a second main electrode 8, and is characterized in that: the inner inserting core 2 is provided with a first surface 2-A, a drawer type second surface 2-B, a stop rib block 2-1, a spring operation auxiliary groove 2-3, a guide groove 2-4, a limit rib block 2-5, a clamping groove 2-C and a terminal opening 2-10; the spring operation auxiliary groove 2-3 is partially positioned in the guide groove 2-4, the surge protector element 9 is arranged in the second surface 2-B of the inner inserting core 2, the surge protector element 9 is provided with a first main electrode 5 and a terminal 10, the first surface 2-A is provided with a pivot 2-8, the arc shielding piece 3 can rotate around the pivot 2-8, one end of the arc shielding piece 3 is abutted against the spring 4 to realize reset, the remote signaling alarm device comprises a first remote signaling electrode 6 and a second remote signaling electrode 7, the second main electrode 8 comprises an elastic sheet 8-2, and the end 8-3 of the elastic sheet 8-2 and an end boss 10-1 on the terminal 10 are connected through a welding material to form a function of generating a thermal trip effect by being melted under temperature; the back of the arc shielding piece 3 is provided with a guide rod 3-4 with an arc-shaped cylinder, the guide rod 3-4 is consistent with the guide direction of the guide groove 2-4, one port of the spring 4 is clamped on a limit rib block 2-5 in the guide groove 2-4, and the other port of the spring 4 is sleeved on the guide rod 3-4 on the arc shielding piece 3, so that the spring 4 can normally release elasticity in the auxiliary groove 2-3 for running of the spring in the process of generating elasticity, and the effectiveness of the arc shielding piece 3 in rotary contour driving is ensured.

0024. Preferably, the terminal 10 is further provided with an end face 10-2, the end face 10-2 is connected to the second plane 9-2 of the surge protector element 9 by a welding material, the terminal 10 passes through the terminal opening 2-10 and is flush with the first surface 2-a of the interposer core 2, the end plane 5-2 of the first main electrode 5 is connected to the first plane 9-1 of the surge protector element 9 by a welding material, the lead-out terminal 5-1 of the first main electrode 5 is clamped into the clamping groove 2-C of the interposer core 2 and protrudes to the outside of the interposer core 2, the first lead-out terminal 8-1 on the second main electrode 8 is clamped into the guiding groove 2-4 of the interposer core 2 and protrudes to the outside of the interposer core 2, the arc shielding member 3 is arranged on the pivot point 2-8 of the first surface 2-a of the interposer core 2 with a bearing function, the spring 4 is arranged in the guiding groove 2-4 of the first surface 2-a of the interposer core 2 with a bearing function, the first lead-out terminal 8-1 is clamped into the clamping groove 2-C of the interposer core 2 and protrudes to the second electrode 11-B of the interposer core 2 and protrudes to the outside of the interposer core 2, respectively.

0025. Preferably, square holes 1-1 are arranged on two sides of the shell 1, and the square holes 1-1 and two guide lugs 2-7 on the inner inserting core 2 form a matched locking type assembly.

0026. Preferably, the second main electrode 8 is an integrally formed elastic metal component, and further comprises a second lead-out terminal 8-4, wherein the second lead-out terminal 8-4 can be matched with the port component 3-1 on the arc shielding component 3 to realize limit stop.

0027. Preferably, the first remote signaling electrode 6 and the second remote signaling electrode 7 are metal pieces with elastic functions, the first remote signaling electrode 6 comprises an integrally formed elastic support 6-1, the elastic support 6-1 is located in the direction of a contact end face 7-1 of the second remote signaling electrode 7, when the port component 3-1 on the arc shielding component 3 is limited and stopped by the second leading-out terminal 8-4 on the second main electrode 8, the protruding surface 3-5 on the arc shielding component 3 is pressed against the elastic support 6-1 on the first remote signaling electrode 6, so that the elastic support 6-1 contacts the contact end face 7-1 of the second remote signaling electrode 7, and a remote signaling signal output in a normally closed state is formed; and when the end 8-3 of the elastic piece 8-2 is sprung and separated from the end boss 10-1 on the terminal 10, the limit stop function of the second leading-out terminal 8-4 on the second main electrode 8 is lost, the arc shielding piece 3 is driven in a rotary profile on the pivot 2-8 on the first surface 2-A of the inner core 2 under the elastic force of the spring 4, the pressing force of the protruding surface 3-5 on the arc shielding piece 3 is released, and the elastic support 6-1 is separated from the contact end face 7-1, so that a remote signaling signal output in a normally open state is formed.

0028. Preferably, the arc shielding member 3 is driven to be in contact with the stop rib block 2-1 of the inner core 2 with the bearing function in a rotary profile under the elastic force of the spring 4, so that an effective and reliable isolation and arc shielding function is generated.

0029. Preferably, the surge protector element 9 is a metal oxide varistor or a gas discharge tube.

0030. Preferably, the limit rib block 2-5 is used for clamping one port of the spring 4 in the guide groove 2-4, so as to prevent the spring 4 from tilting after being compressed.

0031. Preferably, the peripheral shape of the end boss 10-1 on the terminal 10 is in close fit with the terminal opening 2-10 of the interposer 2 with bearing function

When the end 8-3 of the elastic sheet 8-2 on the second main electrode 8 and the end boss 10-1 on the terminal 10 are welded together through welding materials, the port component 3-1 on the arc shielding component 3 is limited and stopped by the second leading-out terminal 8-4 on the second main electrode 8, the spring 4 is simultaneously promoted to be compressed in the guide groove 2-4 of the first surface 2-A of the interposer core 2, when the surge protector element 9 conducts current which causes the temperature melting of the welding materials between the end 8-3 of the elastic sheet 8-2 on the second main electrode 8 and the end boss 10-1 on the terminal 10, the end 8-3 of the elastic sheet 8-2 on the second main electrode 8 is separated from the end boss 10-1 on the terminal 10, and at the moment, the limit stop function of the second leading-out terminal 8-4 on the second main electrode 8 is lost, so that the arc shielding component 3 is driven to rotate along the pivot profile 8-2A on the first surface 2-A of the interposer core 2 under the pushing force of the spring 4, and the arc shielding component 3 is promoted to be connected with the end boss 2-3 of the arc shielding component 2, and the end boss 2-3 is promoted to be connected with the end boss 10-3 of the arc shielding component 2.

0032. The working principle of the structure is as follows: when the end 8-3 of the elastic sheet 8-2 on the second main electrode 8 and the end boss 10-1 on the terminal 10 are welded together through welding materials, the port component 3-1 on the arc shielding piece 3 is limited and stopped by the second leading-out terminal 8-4 on the second main electrode 8, meanwhile, the spring 4 is caused to be compressed in the guide groove 2-4 of the first surface 2-A of the inner core 2, when the surge protector element 9 conducts current which causes the welding materials between the end 8-3 of the elastic sheet 8-2 on the second main electrode 8 and the end boss 10-1 on the terminal 10 to be melted by the temperature, the end 8-3 of the elastic sheet 8-2 on the second main electrode 8 is separated from the end boss 10-1 on the terminal 10 in a bouncing way, and at the moment, the limiting and stopping function of the second leading-out terminal 8-4 on the second main electrode 8 is lost, so that the arc shielding piece 3 is driven to be in a rotary profile along the pivot supporting point 2-8 on the first surface 2-A of the inner core 2 under the action of the spring 4, and the end 8-3 is caused to be connected with the end boss 10-3 of the elastic sheet 8-2 on the terminal 10, and the end boss 10-1 is isolated; when the port component 3-1 on the arc shielding component 3 is limited and stopped by the second leading-out terminal 8-4 on the second main electrode 8, the protruding surface 3-5 on the arc shielding component 3 is pressed against the elastic support 6-1 on the first remote signaling electrode 6, so that the elastic support 6-1 contacts the contact end surface 7-1 of the second remote signaling electrode 7, and a remote signaling signal output in a normally closed state is formed; when the end 8-3 of the elastic piece 8-2 is sprung and separated from the end boss 10-1 on the terminal 10, at the moment, the limit stop function of the second leading-out terminal 8-4 on the second main electrode 8 is lost, under the action of the elastic force of the spring 4, the arc shielding piece 3 is driven by a rotary profile on the pivot 2-8 on the first surface 2-A of the inner core 2, at the moment, the pressing force of the protruding surface 3-5 on the arc shielding piece 3 is released, the elastic support 6-1 is separated from the contact end face 7-1, so that a remote signaling signal output in a normally open state is formed, therefore, the voltage dependent resistor is mounted in the inner core with a bearing function through the structure, the first main electrode of the voltage dependent resistor directly protrudes out of the shell to be connected with a PCB, the end boss of the other connecting terminal of the voltage dependent resistor directly penetrates through an opening slot of the inner core and is flush with the surface of the inner core, the end boss is assembled with the opening slot of the inner core to be matched with the opening slot of the inner core, similar to the sealing effect of the hole and the hole plug, and the sealing effect of the inner core can play a role of blocking that no glue can be blocked from the first surface of the inner core with the bearing function of the inner core when filling material is required; in addition, the end face boss is directly led out from the piezoresistor body, is set to minimize the distance between the end face boss and the piezoresistor body, and is set to be parallel to the piezoresistor body; the second main electrode is an integrally formed elastic metal part and comprises a first leading-out terminal, an elastic sheet, an end part and a second leading-out terminal, when the attached welding material is melted under the temperature, the second main electrode can be separated from an end face boss on the terminal by utilizing the self elastic force; under the elastic force of the spring, the arc shielding piece is driven to be in contact with the stop rib block of the inner insertion core with the bearing function in a rotary profile manner, so that an effective and reliable arc shielding function is generated; the back of the guide rod on the arc shielding piece is provided with an arc-shaped cylinder, the shape of the guide rod is consistent with the guiding direction of the guide groove on the inner inserting core with the bearing function, and the guide rod can be sleeved in the inner ring of the spring, so that the spring can normally release the elastic force in the auxiliary groove for the spring to run in the process of generating the elastic force, and the arc shielding piece is provided with the effectiveness of rotary contour driving; the spring is not deformed to fail after long-time use; the first remote signaling electrode and the second remote signaling electrode both belong to metal pieces with elastic functions, the first remote signaling electrode comprises an integrally formed elastic support which is positioned in the direction of the contact end face of the second remote signaling electrode, when the port component on the arc shielding component is limited and stopped by the second leading-out terminal on the second main electrode, the protruding surface on the arc shielding component is in press connection with the elastic support on the first remote signaling electrode, so that the elastic support is in contact with the contact end face of the second remote signaling electrode, and a remote signaling signal output in a normally closed state is formed; the end of the elastic piece is separated from the end boss on the terminal in a bouncing way, at the moment, the limit stop function of the second leading-out terminal on the second main electrode is lost, under the elastic action of the spring, the arc shielding piece is driven by a rotary profile on the pivot fulcrum on the first surface of the inner inserting core, at the moment, the pressing force of the protruding surface on the arc shielding piece is released, and the elastic support is separated from the end face of the contact, so that a remote signaling signal output in a normally open state is formed, the whole structure has a compact structure, the product size is small, the requirements of integration, miniaturization and power maximization of a power supply can be met, and the pins can be directly welded on a PCB.

Claims

1. The utility model provides an on-board surge protector, includes casing (1), has interpolation core (2) of bearing function, spring (4), hides arc spare (3), can provide remote signaling signal output's remote signaling alarm device, can bear surge protector element (9) and second main electrode (8), its characterized in that: the inner inserting core (2) is provided with a first surface (2-A), a drawer type second surface (2-B), a stop rib block (2-1), a spring operation auxiliary groove (2-3), a guide groove (2-4), a limit rib block (2-5), a clamping groove (2-C) and a terminal opening (2-10); the spring operation auxiliary groove (2-3) is partially positioned in the guide groove (2-4), the surge protector element (9) is arranged in the second surface (2-B) of the inner inserting core (2), the surge protector element (9) is provided with a first main electrode (5) and a terminal (10), the first surface (2-A) is provided with a pivot (2-8), the arc shielding piece (3) can rotate around the pivot (2-8), one end of the arc shielding piece (3) is abutted against the spring (4) to realize reset, the remote signaling alarm device comprises a first remote signaling electrode (6) and a second remote signaling electrode (7), the second main electrode (8) comprises an elastic sheet (8-2), and an end part (8-3) of the elastic sheet (8-2) and an end surface boss (10-1) on the terminal (10) are connected through a welding material to form a function with a thermal release effect caused by thermal melting; the back of arc shielding piece (3) is provided with guide bar (3-4) that the appearance is curved cylinder, guide bar (3-4) is unanimous with the direction of guide way (2-4), one port joint of spring (4) is on spacing muscle piece (2-5) in guide way (2-4), and another port cover of spring (4) is on guide bar (3-4) on arc shielding piece (3), can make spring (4) can normally release the elasticity in spring operation auxiliary groove (2-3) in the production elasticity effect in-process to guarantee to hide arc piece (3) and be rotatory profile drive's validity.

2. The on-board surge protector of claim 1, wherein: the terminal (10) is further provided with an end face (10-2), the end face (10-2) is connected to a second plane (9-2) of the surge protector element (9) through a welding material, the terminal (10) passes through the terminal opening (2-10) and is flush with a first surface (2-A) of the interposer core (2), the end plane (5-2) of the first main electrode (5) is connected to the first plane (9-1) of the surge protector element (9) through the welding material, the lead-out terminal (5-1) of the first main electrode (5) is clamped in a clamping groove (2-C) of the interposer core (2) and protrudes to the outside of the interposer core (2), the first lead-out terminal (8-1) on the second main electrode (8) is clamped in a guiding groove (2-4) of the interposer core (2) and protrudes to the outside of the interposer core (2), the lead-out terminal (3) is arranged on a first surface (2-A) of the interposer core (2) with a bearing function, the lead-out terminal (2-1) is clamped in a guiding groove (2-4) of the interposer core (2) with a bearing function, the first remote signaling electrode (6) and the second remote signaling electrode (7) are respectively arranged in a first remote signaling electrode mounting frame (2-6) and a second remote signaling electrode mounting frame (2-11) which are clamped on the second surface (2-B) of the interpolation core (2) and protrude to the outside of the interpolation core (2).

3. The on-board surge protector according to claim 2, characterized in that square holes (1-1) are arranged on two sides of the housing (1), and the square holes (1-1) and two guide lugs (2-7) on the inner core (2) form a matched lock catch type assembly.

4. An on-board surge protector according to claim 3, characterized in that the second main electrode (8) is an integrally formed metal part with elasticity, and further comprises a second lead-out terminal (8-4), wherein the second lead-out terminal (8-4) can cooperate with the port part (3-1) on the arc shielding member (3) to realize a limit stop.

5. The on-board surge protector according to claim 4, wherein the first remote signaling electrode (6) and the second remote signaling electrode (7) are metal pieces with elastic functions, the first remote signaling electrode (6) comprises an integrally formed elastic support (6-1), the elastic support (6-1) is located in the direction of a contact end face (7-1) of the second remote signaling electrode (7), and when the port component (3-1) on the arc shielding piece (3) is limited and stopped by the second leading-out terminal (8-4) on the second main electrode (8), the protruding surface (3-5) on the arc shielding piece (3) is pressed against the elastic support (6-1) on the first remote signaling electrode (6), so that the elastic support (6-1) contacts the contact end face (7-1) of the second remote signaling electrode (7), and a remote signaling signal output in a normally closed state is formed; and when the end part (8-3) of the elastic piece (8-2) is separated from the end face boss (10-1) on the terminal (10) in a bouncing way, at the moment, the limit stop function of the second leading-out terminal (8-4) on the second main electrode (8) is lost, under the elastic force of the spring (4), the arc shielding piece (3) is driven in a rotary profile on the pivot (2-8) on the first surface (2-A) of the inner inserting core (2), at the moment, the compression joint force of the protruding surface (3-5) on the arc shielding piece (3) is released, and the elastic support (6-1) is separated from the contact end face (7-1), so that a remote signaling signal output in a normally open state is formed.

6. The on-board surge protector according to claim 5, characterized in that the arc shielding member (3) is rotationally contoured to be driven into contact with the stop rib block (2-1) of the inner core (2) with load bearing function under the spring force of the spring (4), thereby producing an effective and reliable isolating, arc shielding function.

7. An on-board surge protector according to claim 6, characterized in that the surge protector element (9) is a metal oxide varistor or a gas discharge tube.

8. The on-board surge protector according to claim 7, wherein the limit rib block (2-5) is used for clamping one port of the spring (4) in the guide groove (2-4) to prevent the spring (4) from tilting after compression.

9. An on-board surge protector according to claim 8, characterized in that the peripheral shape of the end face boss (10-1) on the terminal (10) is in a close fit with the terminal opening (2-10) of the interposer (2) with load bearing function.