CN218004735U

CN218004735U - Self-recovery overvoltage and undervoltage magnetic latching module

Info

Publication number: CN218004735U
Application number: CN202222408645.1U
Authority: CN
Inventors: 毛海锋; 王恒; 毛晨龙
Original assignee: Suzhou Future Electrical Appliance Co ltd
Current assignee: Suzhou Future Electrical Appliance Co ltd
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2022-12-09
Anticipated expiration: 2032-09-09

Abstract

The utility model relates to a self-restoring overvoltage and undervoltage magnetic latching module, which comprises a shell, a relay and a wiring terminal, wherein a fixed seat is fixed in the shell, a PCB is fixed on the fixed seat, and the relay is electrically connected with the PCB; the number L of the wiring terminals is =2N +2, wherein N is the number of the relays; the two wiring terminals form a group, each wiring terminal only corresponds to one relay, and the two remaining wiring terminals which do not correspond to the relays are electrically connected through a terminal connecting plate; the relay is provided with an input interface and an output interface, the input interface is connected to one of the wiring terminals through an input connecting plate, and the output interface is connected to the other wiring terminal through an output connecting plate. Automatic assembly is realized, the magnetic latching relay can be quickly positioned, and power voltage sampling, power supply and state feedback quick electric connection are realized; the mode of wire welding is not adopted any more, and is an important ring for automatic assembly.

Description

Self-recovery overvoltage and undervoltage magnetic latching module

Technical Field

The utility model belongs to the technical field of the power consumption safety technique among the electric power industry and specifically relates to an under-voltage magnetism keeps module is crossed from compound.

Background

The magnetic latching relay is one kind of relay, but has more stable performance, smaller size, stronger bearing capacity and the like than other relays. The magnetic latching relay is an automatic switch which can be automatically switched on or off, can be kept in a stable state at ordinary times by depending on the magnetism of a permanent magnet, and can be excited only by using a pulse signal if the state needs to be switched.

Most of the existing magnetic latching relays need to be combined together to be used, so that different circuits can be conveniently controlled, at the moment, the same magnetic latching relay modules need to be installed in a shell one by one through screws, and meanwhile, an interface and a wiring terminal of the magnetic latching relay module are connected through a lead which needs to be connected in a welding mode; the power voltage sampling, the power supply and the state feedback are conducted by welding thin flexible wires on the PCB; this type of connection and mounting greatly reduces the efficiency of the installation and is not suitable for automated assembly.

Disclosure of Invention

The utility model aims to solve the technical problem that a can realize automatic assembly production from compound under-voltage magnetism keeping module of crossing.

The utility model provides a technical scheme that its technical problem adopted is: a self-resetting overvoltage and undervoltage magnetic latching module comprises a shell, a relay arranged in the shell and a wiring terminal arranged on the shell, wherein a fixed seat used for positioning the relay is fixed in the shell, a PCB is fixed on the fixed seat, and the relay is electrically connected with the PCB; the number L =2N +2 of the wiring terminals, wherein N is the number of the relays; the two wiring terminals form a group, each wiring terminal only corresponds to one relay, and the two remaining wiring terminals which do not correspond to the relays are electrically connected through a terminal connecting plate; the relay is provided with an input interface and an output interface, the input interface is connected to one of the wiring terminals through an input connecting plate, and the output interface is connected to the other wiring terminal through an output connecting plate.

More specifically, the fixed seat is provided with a plurality of placing positions for positioning the relay; the automatic positioning device is characterized in that a first heightening block is arranged on the placing position, limiting plates are arranged around the placing position, a abdicating notch for the input connecting plate and the output connecting plate to pass through is formed in each limiting plate, and a positioning assembly used for positioning the input connecting plate or the output connecting plate is arranged in each abdicating notch.

More specifically, the positioning assembly comprises two extending ends extending upwards from the bottom of the abdicating notch and a positioning part located at the extending ends and extending towards one side; the two positioning parts are oppositely arranged, a limiting cavity is formed between the two extending ends and the two positioning parts, and the input connecting plate and the output connecting plate are arranged in the limiting cavity; the nearest distance between the two positioning parts is smaller than the width of the input connecting plate or the output connecting plate; the distance between the two extending ends is larger than the width of the input connecting plate or the output connecting plate.

More specifically, a guide surface is formed on the positioning part, and the extending end has elasticity; the input connecting plate and the output connecting plate enter the limiting cavity along the guide surface.

Further specifically, a fixing part is arranged on the fixing seat, the PCB is connected to the fixing seat through the fixing part, and the fixing part and the placing positions are respectively located on two opposite sides of the fixing seat.

Further specifically, the mounting is for following the fixing base upwards stretches out the falcon be provided with the draw-in groove on the PCB board, the falcon inserts in the draw-in groove.

More specifically, a plurality of first through holes are formed in each placing position, and connecting pins of the relay penetrate through the first through holes and are connected to the PCB; second through holes are formed in the placing positions, and conductive springs are arranged in the second through holes; one end of the conductive spring is welded on the PCB, and the other end of the conductive spring is abutted against the input connecting plate.

More specifically, the PCB comprises a first PCB and a second PCB, and a space for storing electrical components is formed between the first PCB and the second PCB by being supported by a plurality of support columns; the first PCB is connected to the fixing member.

More specifically, the input connecting board includes a first input end connected to the input interface, a second input end connected to the connection terminal, and an input connecting portion disposed between the first input end and the second input end; the input connecting plate is integrally formed.

More specifically, the output connection board includes a first output end connected to the output interface, a second output end connected to the connection terminal, and an output connection portion disposed between the first output end and the second output end; the output connecting plate is integrally formed.

More specifically, the terminal connecting plate includes a first connecting end portion, a second connecting end portion, and a terminal connecting portion disposed between the first connecting end portion and the second connecting end portion; the terminal connecting plate is integrally formed.

The beneficial effects of the utility model are that: by the arrangement of the structure, automatic assembly can be realized; the magnetic latching relay can be quickly positioned by arranging the placing position on the fixing seat, and is quickly connected and positioned with the PCB through the first through hole, and the power supply voltage sampling, the power supply and the quick electric connection of state feedback are realized through the second through hole and the conductive spring; through using integrated into one piece's input connecting plate, output connecting plate and terminal connecting plate both to realize being connected with external circuit, can realize quick installation again, no longer adopt the mode of wire welding, be the important ring of automatic assembly.

Drawings

FIG. 1 is a schematic view of the structure of the present invention (with a shell);

FIG. 2 is a schematic structural view of the present invention (without the shell);

fig. 3 is a first schematic structural view of the fixing base of the present invention;

FIG. 4 is an enlarged schematic view of the portion H in FIG. 3;

fig. 5 is a schematic structural view of the fixing base of the present invention;

fig. 6 is a schematic structural diagram of the connection between the relay and the input connection board, the output connection board, the terminal connection board, and the connection terminal of the present invention;

FIG. 7 is a schematic structural diagram of the input connecting plate of the present invention;

fig. 8 is a schematic structural view of the output connecting plate of the present invention;

fig. 9 is a schematic structural view of the terminal connecting plate of the present invention.

In the figure: 1. a housing; 2. a relay; 3. a wiring terminal; 4. a fixed seat; 41. placing a bit; 42. a first block of padding; 43. a limiting plate; 44. a abdication gap; 45. a positioning assembly; 451. an extension end; 452. a positioning part; 453. a guide surface; 454. a limiting cavity; 46. a first through hole; 47. a second through hole; 48. clamping falcon; 5. a PCB board; 51. a first PCB board; 52. a second PCB board; 53. a support pillar; 6. a terminal connecting plate; 61. a first connecting end portion; 62. a second connection end portion; 63. a terminal connecting portion; 631. a reinforcing groove; 7. an input connection board; 71. a first input end; 711. a first input riser; 712. an input sloping plate; 713. a second input riser; 714. a first input recess; 715. a first input protrusion; 716. a contact groove; 717. a second input protrusion; 72. a second input end; 721. a first input pad; 722. a third input riser; 723. a third input protrusion; 724. a fourth input bump; 73. an input connection; 8. an output connection plate; 81. a first output end portion; 811. a first output vertical plate; 812. an output through hole; 813. positioning the notch; 82. a second output end portion; 821. a first output plate; 822. a second output riser; 823. a first output protrusion; 824. a second output bump; 83. an output connection portion.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. Furthermore, the technical features mentioned in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

As shown in fig. 1, 2 and 6, the self-resetting overvoltage/undervoltage magnetic latching module includes a housing 1, a relay 2 disposed in the housing 1, and a connection terminal 3 disposed on the housing 1, wherein a fixing seat 4 for positioning the relay 2 is fixed in the housing 1, a PCB 5 is fixed on the fixing seat 4, and the relay 2 is electrically connected to the PCB 5; the number of the wiring terminals 3 is L =2N +2, wherein N is the number of the relays 2, that is, if one relay 2 is provided, the number of the wiring terminals 3 is 4, and if two relays 2 are provided, the number of the wiring terminals 3 is 6, while in the scheme, the number of the relay 2 is 3, and the number of the corresponding wiring terminals 3 is 8; the two wiring terminals 3 form a group, each wiring terminal 3 only corresponds to one relay 2, and the two remaining wiring terminals 3 which do not correspond to the relays 2 are electrically connected through a terminal connecting plate 6; the relay 2 is provided with an input interface and an output interface, the input interface is connected to one of the wiring terminals 3 through an input connecting plate 7, and the output interface is connected to the other wiring terminal 3 through an output connecting plate 8.

The technical scheme is that 3 relays 2 are respectively a relay A, a relay B and a relay C, 8 corresponding wiring terminals 3 are arranged, and the input interface A on the relay A is connected with a first wiring terminal A, and the output interface A is connected with a second wiring terminal A; an input interface B on the relay B is connected with a first wiring terminal B, and an output interface B is connected with a second wiring terminal B; an input interface C on the relay C is connected with a first wiring terminal C, and an output interface C is connected with a second wiring terminal C.

As shown in fig. 3, a plurality of placing positions 41 for positioning the relay 2 are arranged on the fixing seat 4, meanwhile, a first heightening block 42 is arranged on the placing positions 41, a position limiting plate 43 is arranged around the placing positions 41, the height of the position limiting plate 43 is higher than that of the first heightening block 42, the position limiting plate 43 limits the movement of the relay 2 in two directions, and the positioning can be quickly realized when the relay 2 is installed, and the first heightening block 42 can enable the relay 2 to have a certain distance from the bottom surface of the placing positions 41, wherein the distance needs to be larger than the maximum thickness of the input connecting plate 7 and the output connecting plate 8, so that the input connecting plate 7 and the output connecting plate 8 can be conveniently placed in the positions; meanwhile, the limiting plate 43 is provided with a abdicating notch 44 through which the input connecting plate 7 and the output connecting plate 8 can pass, and the abdicating notch 44 enables the input connecting plate 7 and the output connecting plate 8 to extend out of the placing position 41 and to be connected with the connecting terminal 3; further, for the convenience of positioning and fixing the input connecting plate 7 and the output connecting plate 8, a positioning assembly 45 is arranged in the abdicating notch 44, the positioning assembly 45 can quickly position and fix the input connecting plate 7 and the output connecting plate 8, and the input connecting plate and the output connecting plate can not shake in the using process.

As shown in fig. 4, the positioning assembly 45 includes two protruding ends 451 protruding upward from the bottom of the abdicating notch 44, and positioning portions 452 protruding to one side from the protruding ends 451, where the two positioning portions 452 are disposed opposite to each other, that is, the positioning portions 452 are bosses located on the side surfaces of the protruding ends 451, the two bosses are in the same plane, and a certain distance is provided between the two bosses, so that the input connection board 7 and the output connection board 8 can conveniently enter through the distance; a limiting cavity 454 is formed between the two extending ends 451 and the two positioning parts 452, namely, a first area between the two extending ends 451, a second area of the two positioning parts 452 close to the bottom of the abdicating notch 44, and a superposed part of the first area and the second area is the limiting cavity 454; in order to limit the positions of the input connecting plate 7 and the output connecting plate 8, the closest distance between the two located portions 452 needs to be smaller than the width of the input connecting plate 7 or the output connecting plate 8, that is, the two located portions 452 need to limit the input connecting plate 7 and the output connecting plate 8 in the limiting cavity 454, and meanwhile, the distance between the two extending ends 451 needs to be ensured to be slightly larger than the width of the input connecting plate 7 or the output connecting plate 8, so that the input connecting plate 7 and the output connecting plate 8 are prevented from shaking, and the occurrence probability of abnormal sound is reduced.

Further, in order to achieve quick installation, a guide surface 453 is formed on the positioning portion 452, the protruding end 451 has certain elasticity, the two guide surfaces 453 are arranged oppositely, the input connecting plate 7 and the output connecting plate 8 slide along the guide surface 453 to the direction of the limiting cavity 454, when the distance between the two positioning portions 452 is smaller than the width of the input connecting plate 7 and the output connecting plate 8, the protruding end 451 is pushed by the positioning portion 452 to open towards two sides until the input connecting plate 7 and the output connecting plate 8 can pass through and enter the limiting cavity 454, at this time, the pushing power of the positioning portion 452 is lost, and the two protruding ends 451 reset so that the input connecting plate 7 and the output connecting plate 8 are limited in the limiting cavity 454.

Based on the structure, the fixing seat 4 is provided with a first surface and a second surface which are parallel to each other, the placing position 41 and the related structure are placed on the first surface, the PCB 5 is fixed on the second surface, and the PCB 5 is fixed through a fixing piece arranged on the second surface.

As shown in fig. 5, the fixing part is a clamping tenon 48 which extends upwards from the fixing seat 4 and is perpendicular to the second surface, a clamping groove is formed in the PCB board 5, the clamping tenon 48 can be inserted into the clamping groove, and the clamping groove in the PCB board 5 is aligned with the clamping tenon 48 in the fixing seat 4 and then pressed downwards to realize quick installation of the PCB board 5; the clamping falcon 48 is arranged at the edge of the fixed seat 4, the clamping grooves are arranged at the edge of the PCB 5, and 4 groups are symmetrically arranged; the clamping falcon 48 and the clamping groove combination at the edge facilitate processing, and do not influence the etching circuit inside the PCB board 5.

Further, in order to facilitate the connection between the relay 2 and the PCB 5, a plurality of first through holes 46 are provided in each placement position 41, the number and the positions of the through holes 46 are determined according to the number and the positions of the connection pins of the relay 2, and the connection pins of the relay 2 need to pass through the corresponding first through holes 46 and be connected with the PCB 5 to realize communication and control; every all be provided with second through hole 47 in placing the position 41 be provided with conductive spring in the second through hole 47, conductive spring one end welding is on PCB board 5, and the other end supports on input connecting plate 7, conductive spring is used for realizing that mains voltage samples, power supply, state feedback are quick to be connected the electricity, convenient rapid Assembly.

As shown in fig. 2, the PCB 5 includes a first PCB 51 and a second PCB 52, a space for storing electrical components is formed between the first PCB 51 and the second PCB 52 by a plurality of support pillars 53, the first PCB 51 is connected to a fixing member, that is, the card slot is disposed at an edge of the first PCB 51; the first PCB 51 and the second PCB 52 are combined for use, so that the product performance can be improved, the functionality is increased, the original planar circuit board is designed into a three-dimensional circuit board, the space can be fully utilized, the electric elements can be protected, the damage in the assembly process is prevented, and the yield of product assembly is greatly improved.

As shown in fig. 7, the input connection board 7 includes a first input end portion 71 connected to the input interface, a second input end portion 72 connected to the connection terminal 3, and an input connection portion 73 provided between the first input end portion 71 and the second input end portion 72; the input connecting plate 7 is integrally formed.

The first input end part 71 comprises a first input vertical plate 711, an input inclined plate 712 and a second input vertical plate 713 which are connected in sequence, the first input vertical plate 711 is connected to the input connecting part 73, and the first input end part 71 is completely inserted into the relay 2 through an input interface and is connected with an electric element in the relay 2; a plurality of first input protrusions 715 are formed by protruding outwards on two side surfaces of the first input riser 711, first input grooves 714 are formed by recessing inwards on two side surfaces of the first input riser 711, grooves are also formed among the plurality of first input protrusions 715, and the first input protrusions 715 and the first input grooves 714 are matched with the shell and the interior of the relay 2, so that the first input end part 71 can be positioned and fixed; a contact groove 716 is formed on the surface of the input sloping plate 712 by sinking downwards, and a contact bulge is formed on the back surface of the input sloping plate, and the contact bulge is used for being in contact connection with the internal electrical element of the relay 2, so that external current can be conveniently input; a plurality of second input protrusions 717 are disposed on the surface of the second input vertical plate 713, and the second input protrusions 717 can be used for positioning and fixing the relay 2 and can also serve the purpose of connecting internal electrical components.

The second input end 72 includes a first input flat plate 721 and a third input vertical plate 722 connected in sequence, one end of the first input flat plate 721 is connected to the input connection portion 73, and the other end is connected to the third input vertical plate 722; the third input riser 722 extends upwards from the connection point of the first input flat plate 721; a third input bulge 723 is formed by outwards protruding two side surfaces of the first input flat plate 721, and the third input bulge 723 is arranged close to the connection position of the first input flat plate 721 and the input connecting part 73; a fourth input protrusion 724 is formed outwards on two side faces of the third input riser 722, and the fourth input protrusion 724 is arranged at the end part far away from the connection part of the first input flat plate 721 and the third input riser 722; the wiring terminal 3 is just clamped into the third input bulge 723 and the fourth input bulge 724, so that the wiring terminal is not easy to fall off; meanwhile, in order to facilitate the connection of the first input flat plate 721 and an external input cable by the connection terminal 3 and prevent the connection from sliding off, an embossing is arranged on the surface of the first input flat plate 721 and faces the interface side of the connection terminal 3.

As shown in fig. 8, the output connection plate 8 includes a first output end portion 81 connected to the output interface, a second output end portion 82 connected to the connection terminal 3, and an output connection portion 83 provided between the first output end portion 81 and the second output end portion 82; the output connecting plate 8 is integrally formed.

The first output end portion 81 is a first output vertical plate 811 connected with the output connecting portion 83, an output through hole 812 is formed in the surface of the first output vertical plate 811 and used for being connected with internal electrical components, and meanwhile, a positioning notch 813 is formed in one corner of the top of the first output vertical plate 811 and used for being matched with a shell of the relay 2 to be positioned and fixed, so that the first output end portion 81 is guaranteed to be kept stable inside the relay 2.

The second output end 82 comprises a first output flat plate 821 and a second output vertical plate 822 which are sequentially connected, one end of the first output flat plate 821 is connected with the output connecting part 83, and the other end of the first output flat plate 821 is connected with the second output vertical plate 822; the second output vertical plate 822 extends upwards from the connection with the first output flat plate 821; a first output bulge 823 is formed by outwards protruding two side surfaces of the first output flat plate 821, and the first output bulge 823 is arranged close to the connection position of the first output flat plate 821 and the output connection part 83; second output bulges 824 are formed outwards on two lateral surfaces of the second output vertical plates 822, and the second output bulges 824 are positioned at the tail parts of the second output vertical plates 822; a limiting part is formed between the first output bulge 823 and the second output bulge 824 to just clamp the wiring terminal 3 therein, so that the wiring terminal is not easy to fall off; further, the surface of the first output plate 821 is provided with embosses facing the interface side of the wiring terminal 3, so that the connection with an external cable is facilitated and an anti-slip effect is achieved.

The terminal connecting plate 6 includes a first connecting end portion 61, a second connecting end portion 62, and a terminal connecting portion 63 provided between the first connecting end portion 61 and the second connecting end portion 62 as shown in fig. 9; the terminal connecting plate 6 is integrally formed; the terminal connecting plate 6 is a plate-shaped first terminal horizontal plate, a plate surface of the first terminal horizontal plate is downwards sunken to form a reinforcing groove 631, and a reinforcing bulge is formed on the back surface of the first terminal horizontal plate, the reinforcing groove 631 and the reinforcing bulge are formed by one-step forming through stamping, so that the strength of the terminal connecting plate 6 can be improved, and the terminal connecting plate is not easy to bend; the first connecting end portion 61 and the second connecting end portion 62 are connected to the connecting terminal 3, and the structure of the connecting terminal is consistent with the structure of the second input end portion 72 and the second output end portion 82.

In conclusion, automatic assembly can be realized through the arrangement of the structure; the magnetic latching relay can be quickly positioned by arranging the placing position 41 on the fixed seat 4, and is quickly connected and positioned with the PCB 5 through the first through hole 46, and the power supply voltage sampling, power supply and state feedback quick electric connection are realized through the second through hole 47 and the conductive spring; through using integrated into one piece's input connecting plate 7, output connecting plate 8 and terminal connecting plate 6 both to realize being connected with external circuit, can realize again quick installation, no longer adopt the mode of wire welding, be the important a ring of automated assembly.

It is to be emphasized that: the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form, and any simple modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.

Claims

1. A self-resetting overvoltage and undervoltage magnetic latching module comprises a shell (1), a relay (2) arranged in the shell (1) and a wiring terminal (3) arranged on the shell (1), and is characterized in that a fixing seat (4) used for positioning the relay (2) is fixed in the shell (1), a PCB (printed circuit board) (5) is fixed on the fixing seat (4), and the relay (2) is electrically connected with the PCB (5); the number L =2N +2 of the wiring terminals (3), wherein N is the number of the relays (2); the two wiring terminals (3) form a group, each wiring terminal (3) only corresponds to one relay (2), and the two remaining wiring terminals (3) which do not correspond to the relays (2) are electrically connected through a terminal connecting plate (6); the relay (2) is provided with an input interface and an output interface, the input interface is connected to one wiring terminal (3) through an input connecting plate (7), and the output interface is connected to the other wiring terminal (3) through an output connecting plate (8).

2. The self-restoring overvoltage/undervoltage magnetic latching module according to claim 1, wherein a plurality of placing positions (41) for positioning the relay (2) are arranged on the fixed seat (4); put and be provided with first bed hedgehopping piece (42) on position (41) place position (41) and be provided with limiting plate (43) all around offer breach of stepping down (44) that can supply input connecting plate (7) and output connecting plate (8) to pass through on limiting plate (43) it is provided with locating component (45) that are used for fixing a position input connecting plate (7) or output connecting plate (8) to step down in breach (44).

3. The self-healing overvoltage/undervoltage magnetic retaining module according to claim 2, wherein the positioning assembly (45) comprises two protruding ends (451) protruding upwards from the bottom of the abdicating notch (44), and a positioning part (452) protruding to one side from the protruding ends (451); the two positioning parts (452) are oppositely arranged, a limiting cavity (454) is formed between the two extending ends (451) and the two positioning parts (452), and the input connecting plate (7) and the output connecting plate (8) are arranged in the limiting cavity (454); the closest distance between the two positioning parts (452) is smaller than the width of the input connecting plate (7) or the output connecting plate (8); the distance between the two extending ends (451) is larger than the width of the input connecting plate (7) or the output connecting plate (8).

4. The self-healing under-voltage magnetic latching module according to claim 3, wherein the positioning portion (452) is formed with a guiding surface (453), and the protruding end (451) has elasticity; the input connecting plate (7) and the output connecting plate (8) enter the limiting cavity (454) along the guide surface (453).

5. The self-healing overvoltage and undervoltage magnetic latching module according to claim 2, wherein a fixing member is disposed on the fixing base (4), the PCB board (5) is connected to the fixing base (4) through the fixing member, and the fixing member and the placing position (41) are respectively disposed on two opposite sides of the fixing base (4).

6. The self-restoring overvoltage and undervoltage magnetic retention module according to claim 5, wherein the fixing part is a clamping tenon (48) extending upwards from the fixing seat (4), a clamping groove is formed in the PCB (5), and the clamping tenon (48) is inserted into the clamping groove.

7. The self-healing overvoltage and undervoltage magnetic latching module according to claim 5, wherein a plurality of first through holes (46) are arranged in each placing position (41), and connecting pins of the relay (2) are connected to the PCB (5) through the first through holes (46); second through holes (47) are formed in the placing positions (41), and conductive springs are arranged in the second through holes (47); one end of the conductive spring is welded on the PCB (5), and the other end of the conductive spring is propped against the input connecting plate (7).

8. The self-healing overvoltage/undervoltage magnetic latching module according to claim 5, wherein the PCB (5) comprises a first PCB (51) and a second PCB (52), and a space for storing electrical components is formed between the first PCB (51) and the second PCB (52) by supporting columns (53); the first PCB (51) is connected to the fixing member.

9. The self-healing overvoltage/undervoltage magnetic latching module according to claim 1, wherein the input connection board (7) comprises a first input end (71) connected to the input interface, a second input end (72) connected to the connection terminal (3), and an input connection (73) disposed between the first input end (71) and the second input end (72); the input connecting plate (7) is integrally formed.

10. The self-healing overvoltage/undervoltage magnetic latching module according to claim 1, wherein the output connection board (8) comprises a first output end (81) connected to the output interface, a second output end (82) connected to the connection terminal (3), and an output connection portion (83) disposed between the first output end (81) and the second output end (82); the output connecting plate (8) is integrally formed.

11. The self-healing overvoltage/undervoltage magnetic retention module according to claim 1, wherein the terminal connection plate (6) comprises a first connection end portion (61), a second connection end portion (62), and a terminal connection portion (63) disposed between the first connection end portion (61) and the second connection end portion (62); the terminal connecting plate (6) is integrally formed.