CN210724203U - 40kA three-phase 3+1 mode PCB type power surge protector - Google Patents

Abstract

The utility model discloses a 40kA three-phase 3+1 mode PCB type power surge protector, which comprises a combined pressure-sensitive element and an air relief pressure-sensitive component, wherein the combined pressure-sensitive element and the air relief pressure-sensitive component are combined together to form the three-phase 3+1 mode PCB type power surge protector, so that the blank of the three-phase PCB type power surge protector is filled, and effective surge protection is provided for a PCB type three-phase power supply; the first pin, the second pin, the third pin and the fourth pin are respectively provided with beryllium copper sheets which are directly flicked to release as low-temperature welding points, two ends of the first spring and the fourth spring are respectively provided with a compression spring ring, the second spring, the third spring, the fifth spring and the sixth spring are respectively provided with a torsion elastic arm which is respectively arranged in a corresponding hook, and then copper foils are arranged through a PCB board to form a remote signal channel; the microswitch is novel in design, reliable in performance, simple in process and simple and convenient to assemble, production working hours and material cost are effectively saved, and the remote communication error alarm hidden danger caused by the fact that the microswitch does not work in place and beryllium copper sheets are not in good contact is improved.

Description

40kA three-phase 3+1 mode PCB type power surge protector

Technical Field

The utility model relates to a three-phase power surge protector device, concretely relates to 40kA three-phase 3+1 mode PCB type power surge protector.

Background

The surge protector is a protection device for providing safety protection for various electronic equipment, instruments and meters and communication lines, and can play a role in protection when an electric loop, a communication line or a PCB line is damaged by lightning attack or other instantaneous overvoltage.

At present, a PCB type surge protector on the market belongs to a product with C, D-level protection of a single-phase power supply line, and a three-phase power supply PCB type surge protector for C, D-level protection of a three-phase power supply line is lacked.

The product has the over-temperature and over-current protection function (namely, the tripping function), and when the product fails, the connection between the lightning protector and the main loop is cut off in a mechanical tripping mode, so that the phenomenon that the product fails to cause combustion and fire is prevented. The tripping function of the product is mainly realized by the way that the low-temperature pin is in flexible connection with the tripping copper sheet through the copper braid, and the tripping copper sheet is bounced off by the torsion spring after low-temperature tripping.

The product can provide the function of remote signaling alarm signals, and the implementation modes thereof are two types: one mode is to connect a copper sheet or a lead through a microswitch to form on-off; in the other mode, the beryllium copper elastic sheet is contacted with a copper wire or a copper sheet, the low-temperature pin presses the beryllium copper elastic sheet, different voltages are separated by an insulating material, and the beryllium copper elastic sheet is bounced off after low-temperature tripping to form on-off of a remote signal.

The PCB type surge protector is complex in structure and process, difficult to assemble, high in material cost and prone to remote signal false alarm caused by insufficient stroke action of the microswitch and poor contact of the beryllium copper elastic sheet, and consumes more working hours.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a 40kA three-phase 3+1 mode PCB type power surge protector to solve the problem mentioned in the above-mentioned background art.

In order to solve the technical problem, the utility model provides a 40kA three-phase 3+1 mode PCB type power surge protector, which comprises a shell, a PCB which is assembled in the shell and is provided with copper foil, a combined pressure-sensitive element and an air release pressure-sensitive component which are matched and connected with the PCB, a spring component and a pin component;

the combined pressure-sensitive element comprises two pressure-sensitive chips a, a high-temperature pin of the combined pressure-sensitive element is arranged between the two pressure-sensitive chips a, and the two pressure-sensitive chips a are respectively provided with a first low-temperature pin and a second low-temperature pin which are independent; the air release pressure-sensitive component comprises an air release chip and a pressure-sensitive chip b, a high-temperature pin of the air release pressure-sensitive component is arranged between the air release chip and the pressure-sensitive chip b, a third low-temperature pin is arranged on one side of the pressure-sensitive chip b, and a fourth low-temperature pin is arranged on one side of the air release chip;

the pin assembly comprises a first pin, a second pin, a third pin and a fourth pin, one end of each pin is connected with a beryllium copper sheet, the four beryllium copper sheets are welded with the first low-temperature pin, the second low-temperature pin, the third low-temperature pin and the fourth low-temperature pin correspondingly, and the four beryllium copper sheets are connected with hooks respectively;

the spring assembly comprises a first spring, a second spring, a third spring, a fourth spring, a fifth spring, a sixth spring and a seventh spring; two ends of the first spring and the fourth spring are respectively provided with a compression spring ring, and the second spring, the third spring, the fifth spring and the sixth spring are respectively provided with a torsion elastic arm which is connected with the hook in a matching way;

the torsion elastic arm of the second spring is in close contact with the compression spring ring at one end of the first spring, and the torsion elastic arm of the third spring is in close contact with the compression spring ring at the other end of the first spring; the torsion elastic arm of the fifth spring is in close contact with the compression spring ring at one end of the fourth spring, the torsion elastic arm of the sixth spring is in close contact with the compression spring ring at the other end of the fourth spring, and the second spring, the third spring, the fifth spring and the sixth spring are respectively welded with the PCB.

Further, the housing includes a shell and a bottom plate; the bottom plate is buckled on the bottom surface of the shell, and the shell and the bottom plate form a closed cavity; a first inner shell and a first cover plate which are matched with each other and a second inner shell and a second cover plate are arranged in the closed cavity, and a clamping groove for fixing the first inner shell and the second inner shell is formed in the inner side of the outer shell;

the inner part of the first inner shell is divided into a first inner shell large cavity and a first inner shell small cavity by a partition plate a, a first inner shell assembling hole position, a first inner shell assembling groove position and a first inner shell assembling column are arranged on the partition plate a, and the first inner shell assembling column and the first inner shell assembling groove position face one side of the first inner shell small cavity; the combined pressure-sensitive element is arranged in a large cavity of the first inner shell, the first low-temperature pin is matched with the first inner shell assembling hole site, the large cavity of the first inner shell is buckled with the first cover plate, the first cover plate is provided with a first cover plate assembling hole site, a first cover plate assembling groove site and a first cover plate assembling column, and the second low-temperature pin is matched with the first cover plate assembling hole site;

the inner part of the second inner shell is divided into a second inner shell large cavity and a second inner shell small cavity by a partition board b, a second inner shell assembling hole position, a second inner shell assembling groove position and a second inner shell assembling column are arranged on the partition board b, and the second inner shell assembling column and the second inner shell assembling groove position face one side of the second inner shell small cavity; the air release pressure sensitive assembly is arranged in a large cavity of the second inner shell, the third low-temperature pin is matched with the assembling hole position of the second inner shell, the large cavity of the second inner shell is buckled with the second cover plate, the second cover plate is provided with a second cover plate assembling hole position, a second cover plate assembling groove position and a second cover plate assembling column, and the fourth low-temperature pin is matched with the second cover plate assembling hole position.

Furthermore, the beryllium copper sheet connected with the first pin is a first beryllium copper sheet, and the other end of the first beryllium copper sheet is connected with a first hook; the beryllium copper sheet connected with the second pin is a second beryllium copper sheet, and the other end of the second beryllium copper sheet is connected with a second hook; the beryllium copper sheet connected with the third pin is a third beryllium copper sheet, and the other end of the third beryllium copper sheet is connected with a third hook; the beryllium copper sheet connected with the fourth pin is a fourth beryllium copper sheet, and the other end of the fourth beryllium copper sheet is connected with a fourth hook;

the first beryllium copper sheet is welded with the first low-temperature pin, the second beryllium copper sheet is welded with the second low-temperature pin, the third beryllium copper sheet is welded with the third low-temperature pin, and the fourth beryllium copper sheet is welded with the fourth low-temperature pin and respectively used as respective low-temperature tripping points.

Furthermore, the compression spring rings arranged at the two ends of the first spring are a first spring compression spring ring and a second spring compression spring ring respectively, and the compression spring rings arranged at the two ends of the fourth spring are a first spring compression spring ring and a second spring compression spring ring respectively;

the torsion elastic arm on the second spring is a torsion elastic arm of the second spring, the torsion elastic arm on the third spring is a torsion elastic arm of the third spring, the torsion elastic arm on the fifth spring is a torsion elastic arm of the fifth spring, and the torsion elastic arm on the sixth spring is a torsion elastic arm of the sixth spring;

a first spring first compression spring ring is arranged in the first inner shell assembling groove, and a first spring second compression spring ring is arranged in the first cover plate assembling groove;

the second spring is arranged on the first inner shell assembly column, and the second spring torsion elastic arm is connected into the first hook and is in close contact with the first compression spring ring of the first spring;

the third spring is arranged on the first cover plate assembly column, and the third spring torsion elastic arm is connected into the second hook and is in close contact with the first spring second compression spring ring;

a fourth spring first compression spring ring is arranged in the second inner shell assembling groove, and a fourth spring second compression spring ring is arranged in the second cover plate assembling groove;

the fifth spring is arranged on the second inner shell assembly column, and the fifth spring torsion elastic arm is connected into the third hook and is tightly contacted with the first compression spring ring of the fourth spring;

no. six spring dress is on second apron erection column, and No. six spring torsion elastic arm is connected to in the fourth couple, and is in close contact with No. four spring second compression spring coils.

Furthermore, a first jack, a second jack, a third jack, a fourth jack, a fifth jack, a screw through hole and an insulating film pasting frame are arranged on the PCB; the second spring penetrates through the first jack and then is welded, the third spring penetrates through the second jack and then is welded, the fifth spring penetrates through the third jack and then is welded, the sixth spring penetrates through the fourth jack and then is welded, and the seventh spring penetrates through the fifth jack and then is welded; and a copper foil is arranged between the first jack and the fifth jack on the PCB, a copper foil is arranged between the second jack and the third jack, and a remote signal channel is formed between the sixth spring and the seventh spring through the connection of the copper foils.

The PCB board further comprises a connecting strip, the connecting strip comprises a first connecting strip and a second connecting strip, a first connecting strip screw through hole is formed in the first connecting strip, and a screw penetrates through the first connecting strip screw through hole and the PCB board screw through hole and then is locked with the first inner shell and the second inner shell; one end of the first connecting strip is welded with the third pin, and the other end of the first connecting strip is provided with a bent pin; one end of the second connecting strip is welded with the high-temperature pin of the combined pressure-sensitive element, and the other end of the second connecting strip is welded with the high-temperature pin of the air release pressure-sensitive component.

Furthermore, two pressure sensitive chips a in the combined pressure sensitive element share one combined pressure sensitive element high-temperature pin, the air release and pressure sensitive chips in the air release pressure sensitive assembly share one air release pressure sensitive assembly high-temperature pin, and the combined pressure sensitive element high-temperature pin and the air release pressure sensitive assembly high-temperature pin are welded together through a second connecting strip.

Furthermore, the beryllium copper sheet has an elastic function, and the hook is a plastic hook.

Furthermore, first compression spring coil of a spring, fourth compression spring coil of a spring and fourth compression spring coil of a spring second all have compression elasticity function, and No. two spring torsion elastic arms, No. three spring torsion elastic arms, No. five spring torsion elastic arms and No. six spring torsion elastic arms all have torsion elasticity function.

Furthermore, an insulating film sticker is pasted on the insulating film pasting frame of the PCB, and the insulating film sticker is made of high-insulation plastic materials.

The utility model has the advantages that:

1. the 40kA three-phase 3+1 mode PCB type power supply surge protector comprises a combined pressure-sensitive element and an air release pressure-sensitive component, wherein the combined pressure-sensitive element and the air release pressure-sensitive component are combined together to form the three-phase 3+1 mode PCB type power supply surge protector, so that the blank of the three-phase PCB type power supply surge protector is filled, and effective surge protection is provided for a PCB type three-phase power supply.

2. Two pressure sensitive chip a share a combination pressure sensitive element high temperature pin among this 40kA three-phase 3+1 mode PCB type power surge protector's the combination pressure sensitive element, air is put among the pressure sensitive component and is put pressure sensitive component high temperature pin with air with pressure sensitive chip b sharing air, combination pressure sensitive element high temperature pin and air are put pressure sensitive component high temperature pin and are passed through the welding of second connecting strip and be in the same place, make its surge protector inner structure simplify, a plurality of pins finally form an independent sharing pin, it becomes more succinct to make when the three-phase power surge protection wiring design.

3. The first pin, the second pin, the third pin and the fourth pin of the 40kA three-phase 3+1 mode PCB type power supply surge protector are respectively provided with beryllium copper sheets which are directly bounced to release as low-temperature welding point tripping, and the beryllium copper sheets are respectively connected into a hook; two ends of the first spring and the fourth spring are respectively provided with a compression spring ring, and the second spring, the third spring, the fifth spring and the sixth spring are respectively provided with a torsion elastic arm which are respectively arranged in corresponding hooks, and then copper foils are arranged on a PCB to form a remote signal path; the structure has novel design, reliable performance, simple process and simple and convenient assembly, effectively saves the production working hours and the material cost, and improves the remote communication error alarm hidden trouble caused by the improper action of the microswitch and the poor contact of the beryllium copper sheet.

4. This 40kA three-phase 3+1 mode PCB type power surge protector's both ends of a spring and No. four springs are equipped with the compression spring coil respectively, play effective in close contact with and excessive pressure cushioning effect, and the contact effect is better.

5. This couple of 40kA three-phase 3+1 mode PCB type power surge protector adopts for the plastics couple, can choose for use to be high strength high insulating plastics couple, and it can effectively keep apart to participate in and the remote communication signal between high-low voltage, plays good insulating effect.

6. The copper foil has been laid on this 40kA three-phase 3+1 mode PCB type power surge protector's the PCB board, can effectively establish ties and communicate remote signaling signal, makes a plurality of trips report an emergency and ask for help or increased vigilance the point cluster together, makes three phase current surge protection wiring design become more succinct, effectively separates different voltages between the metalwork of first connecting strip and second connecting strip and first inner shell cavityle and second inner shell cavityle one side simultaneously, plays good isolation effect.

7. The insulating film of this 40kA three-phase 3+1 mode PCB type power surge protector is high insulating plastic material, can effectively keep apart high-low voltage between the copper foil on second connecting strip and the PCB board, plays good insulating effect.

Drawings

Fig. 1 schematically shows an outline structure schematic diagram of a 40kA three-phase 3+1 mode PCB type power supply surge protector.

Fig. 2 is an exploded view schematically showing the structure of a 40kA three-phase 3+1 mode PCB type power surge protector.

Fig. 3 schematically shows a mounting diagram of the combined voltage sensitive element of the 40kA three-phase 3+1 mode PCB type power surge protector.

Fig. 4 schematically shows an installation diagram of the air-bleed pressure-sensitive components of a 40kA three-phase 3+1 mode PCB type power surge protector.

Fig. 5 is a schematic diagram of a PCB board structure of a 40kA three-phase 3+1 mode PCB type power surge protector.

Fig. 6 is a schematic diagram of the combined voltage-sensitive element structure of a 40kA three-phase 3+1 mode PCB type power surge protector.

Fig. 7 is a schematic diagram of the structure of the air-discharge pressure-sensitive component of the 40kA three-phase 3+1 mode PCB type power supply surge protector.

Fig. 8 is a schematic diagram of the first and second inner shell large cavity structures of a 40kA three-phase 3+1 mode PCB type power surge protector.

Fig. 9 is a schematic diagram of the structure of the first and second inner shell small cavities of the 40kA three-phase 3+1 mode PCB type power surge protector.

Fig. 10 is a schematic diagram showing the structure of first and second cover plates of a 40kA three-phase 3+1 mode PCB type power surge protector;

fig. 11 schematically shows a structure diagram of power supply and remote signal conduction of a 40kA three-phase 3+1 mode PCB type power supply surge protector.

Fig. 12 is a schematic diagram showing the structure of the power supply and remote signal disconnection of the 40kA three-phase 3+1 mode PCB type power supply surge protector.

In the figure: 11. combining the pressure sensitive elements; 111. combining the high-temperature pins of the pressure sensitive elements; 112. a first low temperature pin; 113. a second low temperature pin; 12. an air-bleed pressure sensitive component; 121. a high-temperature pin of the air release pressure sensitive component; 122. a third low temperature pin; 123. a fourth low temperature pin; 21. a housing; 22. a base plate; 23. a first inner case; 231. a first inner shell large cavity; 232. a first inner shell small cavity; 233. a first inner shell assembly hole site; 234. a first inner shell assembling slot position; 235. a first inner shell assembly post; 24. a first cover plate; 241. a first cover plate assembly hole site; 242. a first cover plate assembling slot position; 243. a first cover plate assembly post; 25. a second inner case; 251. a second inner shell large cavity; 252. a second inner shell small cavity; 253. a second inner shell assembly hole site; 254. a second inner shell assembling slot position; 255. a second inner shell assembly post; 26. a second cover plate; 261. a second cover plate assembly hole site; 262. a second cover plate assembling slot position; 263. a second cover plate assembly post; 31. a first pin; 311. a first pin is a beryllium copper sheet; 312. a first hook; 32. a second pin; 321. a second pin is a beryllium copper sheet; 322. a second hook; 33. a third pin; 331. a third pin is a beryllium copper sheet; 332. a third hook; 34. a fourth pin; 341. a fourth pin is a beryllium copper sheet; 342. a fourth hook; 41. a first spring; 411. a first spring first compression spring ring; 412. the first spring and the second compression spring ring; 42. a second spring; 421. a second spring torsion elastic arm; 43. a third spring; 431. a third spring torsion elastic arm; 44. a fourth spring; 441. a fourth spring first compression spring ring; 442. a fourth spring second compression spring ring; 45. a fifth spring; 451. a fifth spring torsion elastic arm; 46. a number six spring; 461. a sixth spring torsion elastic arm; 47. a seventh spring; 51. a PCB board; 511. a first jack; 512. a second jack; 513. a third jack; 514. a fourth jack; 515. a fifth jack; 516. a screw passing hole; 517 an insulating film pasting frame; 52. an insulating film; 531. a first connecting bar; 532. a second connecting strip; 54. and (4) screws.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiment is only one embodiment of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail with reference to the accompanying drawings and specific embodiments.

And for the sake of simplicity, the following omits the technical common sense known to those skilled in the art.

As shown in fig. 1 to 10, the 40kA three-phase 3+1 mode PCB type power supply surge protector comprises a shell, a PCB board arranged with copper foil and assembled in the shell, a combined pressure sensitive element and an air release pressure sensitive component which are matched and connected with the PCB board, a spring component and a pin component.

The combined pressure sensitive element comprises two pressure sensitive chips a, wherein the lower surface of one pressure sensitive chip a is superposed with the upper surface of the other pressure sensitive chip a, a high-temperature pin of the combined pressure sensitive element is arranged between the two pressure sensitive chips a, and the two pressure sensitive chips a are respectively provided with a first low-temperature pin and a second low-temperature pin which are independent.

The air release pressure-sensitive component comprises an air release chip and a pressure-sensitive chip b, and is formed by welding the air release chip and the pressure-sensitive chip b into a whole; a high-temperature pin of the air-releasing pressure-sensitive component is arranged between the air-releasing chip and the pressure-sensitive chip b, so that the air-releasing chip and the pressure-sensitive chip b are contacted simultaneously; and a third low-temperature pin is arranged on one side of the pressure-sensitive chip b, and a fourth low-temperature pin is arranged on one side of the air release.

The two pressure-sensitive chips a in the combined pressure-sensitive element share one high-temperature pin of the combined pressure-sensitive element, the air release and pressure-sensitive chip b in the air release pressure-sensitive component share one high-temperature pin of the air release pressure-sensitive component, and the high-temperature pin of the combined pressure-sensitive element and the high-temperature pin of the air release pressure-sensitive component are welded together through the second connecting strip.

The combined pressure sensitive element and the air release pressure sensitive element of the 40kA three-phase 3+1 mode PCB type power supply surge protector are combined together to form the three-phase 3+1 mode PCB type power supply surge protector, so that the blank of the three-phase PCB type power supply surge protector is filled, and effective surge protection is provided for a PCB type three-phase power supply.

The pin assembly of the 40kA three-phase 3+1 mode PCB type power supply surge protector comprises a first pin, a second pin, a third pin and a fourth pin, wherein one end of each pin is connected with a beryllium copper sheet, the four beryllium copper sheets are welded with a first low-temperature pin, a second low-temperature pin, a third low-temperature pin and a fourth low-temperature pin correspondingly, and the four beryllium copper sheets are further connected with hooks respectively.

The spring assembly comprises a first spring, a second spring, a third spring, a fourth spring, a fifth spring, a sixth spring and a seventh spring; two ends of the first spring and the fourth spring are respectively provided with a compression spring ring, and the second spring, the third spring, the fifth spring and the sixth spring are respectively provided with a torsion elastic arm which is connected with the hook in a matching way.

The torsion elastic arm of the second spring is in close contact with the compression spring ring at one end of the first spring, and the torsion elastic arm of the third spring is in close contact with the compression spring ring at the other end of the first spring; the torsion elastic arm of the fifth spring is in close contact with the compression spring ring at one end of the fourth spring, the torsion elastic arm of the sixth spring is in close contact with the compression spring ring at the other end of the fourth spring, and the second spring, the third spring, the fifth spring and the sixth spring are respectively welded with the PCB.

Specifically, the beryllium copper sheet connected with the first pin is a first beryllium copper sheet, and the other end of the first beryllium copper sheet is connected with a first hook; the beryllium copper sheet connected with the second pin is a second beryllium copper sheet, and the other end of the second beryllium copper sheet is connected with a second hook; the beryllium copper sheet connected with the third pin is a third beryllium copper sheet, and the other end of the third beryllium copper sheet is connected with a third hook; the beryllium copper sheet connected with the fourth pin is a fourth beryllium copper sheet, and the other end of the fourth beryllium copper sheet is connected with a fourth hook.

In the concrete implementation, the first hook, the second hook, the third hook and the fourth hook can be made of high-strength and high-insulation plastic materials, so that high and low voltages between the plug pins and remote communication signals can be effectively isolated, and a good insulation effect is achieved.

The first beryllium copper sheet is welded with the first low-temperature pin, the second beryllium copper sheet is welded with the second low-temperature pin, the third beryllium copper sheet is welded with the third low-temperature pin, and the fourth beryllium copper sheet is welded with the fourth low-temperature pin and respectively used as respective low-temperature tripping points. The first pin, the second pin, the third pin and the fourth pin are respectively provided with beryllium copper sheets which are directly bounced to release as a low-temperature welding point tripping mode, wherein the tail ends of the beryllium copper sheets are preferably provided with buckles respectively and are arranged in clamping positions of high-strength and high-insulation plastic hooks.

The structure design is novel, the performance is reliable, the process is simple, the assembly is simple and convenient, the production time and the material cost are effectively saved, and the hidden danger of remote communication error alarm caused by the fact that the micro-switch is not in place and the beryllium copper sheet is in poor contact is improved.

The shell of the 40kA three-phase 3+1 mode PCB type power supply surge protector comprises a shell and a bottom plate; the bottom plate is buckled on the bottom surface of the shell, and the shell and the bottom plate form a closed cavity; be equipped with the first inner shell of complex and first apron and second inner shell and second apron in the closed cavity, the inboard of shell is equipped with the draw-in groove that is used for fixed first inner shell and second inner shell.

The inner part of the first inner shell is divided into a first inner shell large cavity and a first inner shell small cavity by a partition plate a, a first inner shell assembling hole position, a first inner shell assembling groove position and a first inner shell assembling column are arranged on the partition plate a, and the first inner shell assembling column and the first inner shell assembling groove position face one side of the first inner shell small cavity; the combined pressure-sensitive element is arranged in a large cavity of the first inner shell, the first low-temperature pin is matched with the first inner shell assembling hole, the large cavity of the first inner shell is buckled with the first cover plate, the first cover plate is provided with a first cover plate assembling hole position, a first cover plate assembling groove position and a first cover plate assembling column, and the second low-temperature pin is matched with the first cover plate assembling hole position.

The inner part of the second inner shell is divided into a second inner shell large cavity and a second inner shell small cavity by a partition board b, a second inner shell assembling hole position, a second inner shell assembling groove position and a second inner shell assembling column are arranged on the partition board b, and the second inner shell assembling column and the second inner shell assembling groove position face one side of the second inner shell small cavity; the air release pressure sensitive assembly is arranged in a large cavity of the second inner shell, the third low-temperature pin is matched with the assembling hole position of the second inner shell, the large cavity of the second inner shell is buckled with the second cover plate, the second cover plate is provided with a second cover plate assembling hole position, a second cover plate assembling groove position and a second cover plate assembling column, and the fourth low-temperature pin is matched with the second cover plate assembling hole position.

In actual operation, the compression spring coils arranged at the two ends of the first spring are respectively a first spring compression spring coil and a second spring compression spring coil, and the compression spring coils arranged at the two ends of the fourth spring are respectively a first spring compression spring coil and a second spring compression spring coil.

The torsion elastic arm on the second spring is a torsion elastic arm of the second spring, the torsion elastic arm on the third spring is a torsion elastic arm of the third spring, the torsion elastic arm on the fifth spring is a torsion elastic arm of the fifth spring, and the torsion elastic arm on the sixth spring is a torsion elastic arm of the sixth spring.

Specifically, the first spring is in a shape that two ends of a straight spring wire are respectively bent to form a right angle, and a first spring first compression spring ring and a first spring second compression spring ring are arranged at the two bent ends; the second spring is provided with a second spring torsion elastic arm, the third spring is provided with a third spring torsion elastic arm, and the second spring and the third spring are respectively used as two independent welding feet when being welded with the plate; the shape of the fourth spring is that two ends of a straight spring wire are respectively bent to form a right angle, and a first compression spring ring and a second compression spring ring of the fourth spring are arranged at the two bent ends; the fifth spring is provided with a fifth spring torsion elastic arm, the sixth spring is provided with a sixth spring torsion elastic arm, and the fifth spring and the sixth spring are respectively used as two independent welding pins when being welded with the PCB.

A first spring compression spring ring is arranged in the first inner shell assembling groove, and a second spring compression spring ring is arranged in the first cover plate assembling groove.

No. two springs are arranged on the first inner shell assembly column, and the second spring torsion elastic arm is connected into the first hook and is in close contact with the first compression spring ring of the first spring.

No. three springs are arranged on the first cover plate assembly column, and the third spring torsion elastic arm is connected into the second hook and is in close contact with the first spring second compression spring ring.

The first compression spring ring of the fourth spring is arranged in the second inner shell assembling groove, and the second compression spring ring of the fourth spring is arranged in the second cover plate assembling groove.

The fifth spring is arranged on the second inner shell assembly column, and the fifth spring torsion elastic arm is connected into the third hook and is in close contact with the first compression spring ring of the fourth spring.

No. six spring dress is on second apron erection column, and No. six spring torsion elastic arm is connected to in the fourth couple, and is in close contact with No. four spring second compression spring coils.

The utility model preferably has the beryllium copper sheet with elastic function, and the hook is a plastic hook; first compression spring coil of a spring, first spring second compression spring coil, the first compression spring coil of No. four springs and No. four spring second compression spring coils all have compression elasticity function, and No. two spring torsion elastic arms, No. three spring torsion elastic arms, No. five spring torsion elastic arms and No. six spring torsion elastic arms all have torsion elasticity function.

In specific implementation, a first jack, a second jack, a third jack, a fourth jack, a fifth jack, a screw through hole and an insulating film pasting frame are arranged on the PCB; the second spring penetrates through the first jack and then is welded, the third spring penetrates through the second jack and then is welded, the fifth spring penetrates through the third jack and then is welded, the sixth spring penetrates through the fourth jack and then is welded, and the seventh spring penetrates through the fifth jack and then is welded; and a copper foil is arranged between the first jack and the fifth jack on the PCB, a copper foil is arranged between the second jack and the third jack, and a remote signal channel is formed between the sixth spring and the seventh spring through the connection of the copper foils.

The 40kA three-phase 3+1 mode PCB type power supply surge protector also comprises a connecting strip, wherein the connecting strip comprises a first connecting strip and a second connecting strip, a first connecting strip screw through hole is formed in the first connecting strip, and a screw penetrates through the first connecting strip screw through hole and a PCB plate screw through hole and then is locked with the first inner shell and the second inner shell; one end of the first connecting strip is welded with the third pin, and the other end of the first connecting strip is provided with a bent pin; one end of the second connecting strip is welded with the high-temperature pin of the combined pressure-sensitive element, and the other end of the second connecting strip is welded with the high-temperature pin of the air release pressure-sensitive component.

The PCB is provided with the copper foil which can be effectively connected in series with communication signals, so that a plurality of tripping alarm points are connected in series, and the three-phase power surge protection wiring design is simpler; different voltages between the first connecting strip and the second connecting strip and the metal piece on one side of the small cavity of the first inner shell and the small cavity of the second inner shell are effectively separated, and a good isolation effect is achieved. The insulating film pastes that the frame is pasted in PCB board insulating film, and the insulating film pastes for high insulating plastic material, can effectively keep apart high low voltage between the copper foil on second connecting strip and the PCB board, plays good insulating effect.

As shown in fig. 11 and 12, fig. 11 schematically shows the structure of the 40kA three-phase 3+1 mode PCB type power supply surge protector when the power supply and the remote signaling signal are turned on, and fig. 12 schematically shows the structure of the 40kA three-phase 3+1 mode PCB type power supply surge protector when the power supply and the remote signaling signal are turned off.

In actual work, when the first low-temperature pin and the first pin are disengaged from the beryllium copper sheet, the power supply is cut off to play a role in protection; the first hook is bounced open along with the beryllium copper sheet of the first pin, the second spring torsion elastic arm is separated from the first compression spring ring of the first spring, and the remote signal is disconnected to serve as an alarm.

When the second low-temperature pin and the second pin are tripped, the beryllium copper sheet is cut off to play a role in protection; the second hook is bounced off along with the second pin beryllium copper sheet, the third spring torsion elastic arm is separated from the first spring second compression spring ring, and the remote signal is disconnected to serve as an alarm.

When the third low-temperature pin and the third pin are tripped, the beryllium copper sheet is cut off to play a role in protection; the third hook is bounced off along with the beryllium copper sheet of the third pin, the torsion elastic arm of the fifth spring is separated from the first compression spring ring of the fourth spring, and the remote signal is disconnected to serve as an alarm.

When the fourth low-temperature pin and the fourth pin are tripped, the beryllium copper sheet is cut off to play a role in protection; the fourth hook is bounced off along with the beryllium copper sheet of the fourth pin, the torsion elastic arm of the sixth spring is separated from the second compression spring ring of the fourth spring, and the remote signal is disconnected to serve as an alarm.

In the description above, references to "one embodiment," "an embodiment," "one example," "an example," etc., indicate that the embodiment or example so described may include a particular feature, structure, characteristic, property, element, or limitation, but every embodiment or example does not necessarily include the particular feature, structure, characteristic, property, element, or limitation. Moreover, repeated use of the phrase "in accordance with an embodiment of the present application" although it may possibly refer to the same embodiment, does not necessarily refer to the same embodiment.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides a 40kA three-phase 3+1 mode PCB type power surge protector which characterized in that: the air-release pressure-sensitive device comprises a shell, a PCB (printed circuit board) which is assembled in the shell and is provided with copper foil, a combined pressure-sensitive element and an air-release pressure-sensitive component which are matched and connected with the PCB, a spring component and a pin component;

the combined pressure-sensitive element comprises two pressure-sensitive chips a, a high-temperature pin of the combined pressure-sensitive element is arranged between the two pressure-sensitive chips a, and the two pressure-sensitive chips a are respectively provided with a first low-temperature pin and a second low-temperature pin which are independent; the air release pressure-sensitive component comprises an air release chip and a pressure-sensitive chip b, a high-temperature pin of the air release pressure-sensitive component is arranged between the air release chip and the pressure-sensitive chip b, a third low-temperature pin is arranged on one side of the pressure-sensitive chip b, and a fourth low-temperature pin is arranged on one side of the air release chip;

the pin assembly comprises a first pin, a second pin, a third pin and a fourth pin, one end of each pin is connected with a beryllium copper sheet, the four beryllium copper sheets are welded with a first low-temperature pin, a second low-temperature pin, a third low-temperature pin and a fourth low-temperature pin correspondingly, and the four beryllium copper sheets are connected with hooks respectively;

the spring assembly comprises a first spring, a second spring, a third spring, a fourth spring, a fifth spring, a sixth spring and a seventh spring; two ends of the first spring and the fourth spring are respectively provided with a compression spring ring, and the second spring, the third spring, the fifth spring and the sixth spring are respectively provided with a torsion elastic arm which is connected with the hook in a matching way;

the torsion elastic arm of the second spring is in close contact with the compression spring ring at one end of the first spring, and the torsion elastic arm of the third spring is in close contact with the compression spring ring at the other end of the first spring; the torsion elastic arm of the fifth spring is in close contact with the compression spring ring at one end of the fourth spring, the torsion elastic arm of the sixth spring is in close contact with the compression spring ring at the other end of the fourth spring, and the second spring, the third spring, the fifth spring and the sixth spring are respectively welded with the PCB.

2. A 40kA three-phase 3+1 mode PCB type power supply surge protector as claimed in claim 1, wherein: the housing comprises a shell and a bottom plate; the bottom plate is buckled on the bottom surface of the shell, and the shell and the bottom plate form a closed cavity; a first inner shell and a first cover plate which are matched with each other and a second inner shell and a second cover plate are arranged in the closed cavity, and a clamping groove for fixing the first inner shell and the second inner shell is formed in the inner side of the outer shell;

the inner part of the first inner shell is divided into a first inner shell large cavity and a first inner shell small cavity by a partition plate a, a first inner shell assembling hole position, a first inner shell assembling groove position and a first inner shell assembling column are arranged on the partition plate a, and the first inner shell assembling column and the first inner shell assembling groove position face one side of the first inner shell small cavity; the combined pressure-sensitive element is arranged in a first inner shell large cavity, the first low-temperature pin is matched with a first inner shell assembling hole, the first inner shell large cavity is buckled with the first cover plate, the first cover plate is provided with a first cover plate assembling hole, a first cover plate assembling groove and a first cover plate assembling column, and the second low-temperature pin is matched with the first cover plate assembling hole;

the inner part of the second inner shell is divided into a second inner shell large cavity and a second inner shell small cavity by a partition board b, a second inner shell assembling hole position, a second inner shell assembling groove position and a second inner shell assembling column are arranged on the partition board b, and the second inner shell assembling column and the second inner shell assembling groove position face one side of the second inner shell small cavity; the air release pressure sensitive assembly is arranged in a large cavity of the second inner shell, the third low-temperature pin is matched with the assembling hole of the second inner shell, the large cavity of the second inner shell is buckled with the second cover plate, the second cover plate is provided with a second cover plate assembling hole, a second cover plate assembling groove and a second cover plate assembling column, and the fourth low-temperature pin is matched with the second cover plate assembling hole.

3. A 40kA three-phase 3+1 mode PCB type power supply surge protector as claimed in claim 2, wherein: the beryllium copper sheet connected with the first pin is a first beryllium copper sheet, and the other end of the first beryllium copper sheet is connected with a first hook; the beryllium copper sheet connected with the second pin is a second beryllium copper sheet, and the other end of the second beryllium copper sheet is connected with a second hook; the beryllium copper sheet connected with the third pin is a third beryllium copper sheet, and the other end of the third beryllium copper sheet is connected with a third hook; the beryllium copper sheet connected with the fourth pin is a fourth beryllium copper sheet, and the other end of the fourth beryllium copper sheet is connected with a fourth hook;

the first beryllium copper sheet is welded with the first low-temperature pin, the second beryllium copper sheet is welded with the second low-temperature pin, the third beryllium copper sheet is welded with the third low-temperature pin, and the fourth beryllium copper sheet is welded with the fourth low-temperature pin and respectively used as respective low-temperature tripping points.

4. A 40kA three-phase 3+1 mode PCB type power supply surge protector as claimed in claim 2, wherein: the compression spring rings arranged at the two ends of the first spring are a first spring compression spring ring and a second spring compression spring ring respectively, and the compression spring rings arranged at the two ends of the fourth spring are a first fourth spring compression spring ring and a second fourth spring compression spring ring respectively;

the torsion elastic arm on the second spring is a torsion elastic arm of the second spring, the torsion elastic arm on the third spring is a torsion elastic arm of the third spring, the torsion elastic arm on the fifth spring is a torsion elastic arm of the fifth spring, and the torsion elastic arm on the sixth spring is a torsion elastic arm of the sixth spring;

the first spring first compression spring ring is arranged in the first inner shell assembling groove, and the first spring second compression spring ring is arranged in the first cover plate assembling groove;

the second spring is arranged on the first inner shell assembly column, and the second spring torsion elastic arm is connected into the first hook and is in close contact with the first compression spring ring of the first spring;

the third spring is arranged on the first cover plate assembly column, and the third spring torsion elastic arm is connected into a second hook and is in close contact with a second compression spring ring of the first spring;

the fourth spring first compression spring ring is arranged in the second inner shell assembling groove, and the fourth spring second compression spring ring is arranged in the second cover plate assembling groove;

the fifth spring is arranged on the second inner shell assembly column, and the fifth spring torsion elastic arm is connected into a third hook and is in close contact with the fourth spring first compression spring ring;

the sixth spring is arranged on the second cover plate assembly column, and the torsional elastic arm of the sixth spring is connected into a fourth hook and is in close contact with a second compression spring ring of the fourth spring.

5. A40 kA three-phase 3+1 mode PCB type power supply surge protector according to any of claims 2-4, characterized in that: the PCB is provided with a first jack, a second jack, a third jack, a fourth jack, a fifth jack, a screw through hole and an insulating film pasting frame; the second spring penetrates through the first jack and then is welded, the third spring penetrates through the second jack and then is welded, the fifth spring penetrates through the third jack and then is welded, the sixth spring penetrates through the fourth jack and then is welded, and the seventh spring penetrates through the fifth jack and then is welded; and a copper foil is arranged between the first jack and the fifth jack on the PCB, a copper foil is arranged between the second jack and the third jack, the six springs and the seven springs are connected through the copper foils to form a remote signal path.

6. A40 kA three-phase 3+1 mode PCB type power supply surge protector as claimed in claim 5, wherein: the PCB board connector further comprises a connecting strip, wherein the connecting strip comprises a first connecting strip and a second connecting strip, a first connecting strip screw through hole is formed in the first connecting strip, and the screw penetrates through the first connecting strip screw through hole and the PCB board screw through hole and then is locked with the first inner shell and the second inner shell; one end of the first connecting strip is welded with the third pin, and the other end of the first connecting strip is provided with a bent pin; one end of the second connecting strip is welded with the high-temperature pin of the combined pressure-sensitive element, and the other end of the second connecting strip is welded with the high-temperature pin of the air release pressure-sensitive component.

7. A 40kA three-phase 3+1 mode PCB type power supply surge protector as claimed in claim 1, wherein: two pressure sensitive chips a in the combined pressure sensitive element share one combined pressure sensitive element high-temperature pin, the air release and pressure sensitive chips in the air release pressure sensitive assembly share one air release pressure sensitive assembly high-temperature pin, and the combined pressure sensitive element high-temperature pin and the air release pressure sensitive assembly high-temperature pin are welded together through a second connecting strip.

8. A 40kA three-phase 3+1 mode PCB type power supply surge protector as claimed in claim 1, wherein: the beryllium copper sheet has an elastic function, and the hook is a plastic hook.

9. A40 kA three-phase 3+1 mode PCB type power supply surge protector according to claim 4, wherein: first compression spring coil of a spring, a spring second compression spring coil, No. four spring first compression spring coils and No. four spring second compression spring coils all have compression elasticity function, No. two spring torsion elastic arms, No. three spring torsion elastic arms, No. five spring torsion elastic arms and No. six spring torsion elastic arms all have torsion elasticity function.

10. A40 kA three-phase 3+1 mode PCB type power supply surge protector as claimed in claim 5, wherein: the PCB is characterized in that the insulating film paste is coated on the insulating film paste frame of the PCB and is made of a high-insulation plastic material.

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