Insulation protection structure and electromagnetic relay

Abstract

The present application relates to the technical field of electromagnetic relays, and discloses an insulation protection structure and an electromagnetic relay. The insulation protection structure of the present application comprises: an insulator, wherein a mounting cavity is constructed in the insulator, a partition plate is provided in the mounting cavity, and an insulating sleeve is fixed to one side of the partition plate. In the present application, by means of a coordinated design of an insulating sleeve, a movable plate and a driving plate, an enameled wire coil is isolated from a normally open contact, a normally closed contact and a movable contact in the other chamber; then, by means of the design of an interrupting assembly, when the enameled wire coil is de-energized, an iron core stops attracting a magnetic plate, and the driving plate resets under the action of a first torsion spring, the movable plate can be driven to slide so as to separate the movable contact from the normally open contact, and subsequently, the interrupting assembly can be actuated by the movable plate to interrupt an arc between the normally open contact and the movable contact. Compared with the prior art, the present application can eliminate the potential safety hazards of both discharge creepage and arcing in electromagnetic relays.

Description

An insulation protection structure and electromagnetic relay TECHNICAL FIELD

[0001] The present application relates to the technical field of electromagnetic relays, in particular to an insulation protection structure and electromagnetic relay. BACKGROUND

[0002] An electromagnetic relay is an electronic control device, which has a control system (also known as an input loop) and a controlled system (also known as an output loop). It is usually applied in an automatic control circuit. It is actually a kind of "automatic switch" that uses a small current and low voltage to control a large current and high voltage. It plays a role in automatic regulation, safety protection, and circuit conversion in the circuit. Electromagnetic relays are widely used in aviation, aerospace, ships, household appliances, and other fields, and mainly complete functions such as signal transmission, execution control, and system power distribution. It is one of the key electronic components in various systems.

[0003] After searching, the utility model with the patent publication number CN218996610U discloses a relay with reinforced insulation. The relay effectively insulates the coil from the yoke and armature pieces through the insulation framework mechanism and the matching installation of the insulation sheet body structure, thereby preventing current breakdown. The raised edge completely covers the yoke piece facade, effectively avoiding the risk of discharge creepage. The relay solves the defect of traditional relays that rely solely on increasing the creepage distance to solve the creepage risk. At the same time, the stepped insulation wall increases the creepage distance between the insulation spring piece and the iron core, preventing the load end from being unable to completely de-energize, and greatly improving the insulation effect. However, in the existing technology, when the electromagnetic relay is applied in a high-voltage circuit, there are not only the risks of discharge creepage, but also the safety hazards of arcing. Arcing specifically refers to the generation of an electric arc at the moment when the relay is disconnected (the moving contact and the normally open contact are separated). The electric arc can easily break through the air. At this time, the normally open contact and the normally closed contact can be connected to the moving contact through the electric arc, causing a short circuit in the circuit. In the above-mentioned technical solution, only the risk of discharge creepage between the coil and the yoke is solved, and the safety hazard of arcing of the relay is not solved, resulting in limited improvement of the insulation effect of the relay and poor safety. In order to reasonably improve this problem, the present application provides an insulation protection structure and electromagnetic relay. SUMMARY

[0004] The purpose of the present application is to solve the technical problem that when the electromagnetic relay is applied in a high-voltage circuit, the safety hazards of discharge creepage and arcing exist at the same time, and in the existing technology, only the risk of discharge creepage between the coil and the yoke is solved, and the safety hazard of arcing of the relay is not solved, resulting in limited improvement of the insulation effect of the relay and poor safety. The present application provides an insulation protection structure and electromagnetic relay.

[0005] In order to achieve the above-mentioned purpose, the present application specifically adopts the following technical scheme:

[0006] An insulation protection structure comprises:

[0007] An insulation body, an installation cavity is configured in the insulation body, a partition plate is arranged in the installation cavity, an insulation sleeve is fixed on one side of the partition plate, a lacquered coil is threadedly arranged on the outside of the insulation sleeve, and an iron core is fixed on the inside of the insulation sleeve, a driving plate is hingedly arranged in the installation cavity, the driving plate is connected with the installation cavity through a first torsion spring, a magnetic attraction plate is fixed on the driving plate, and the magnetic attraction plate is magnetically connected with the end of the iron core.

[0008] A movable slot is arranged on the partition plate, the end of the driving plate movably penetrates through the movable slot, a movable plate is slidably arranged on the other side of the partition plate, the movable plate is movably hinged with the end of the driving plate, normally open contacts and normally closed contacts are arranged in the installation cavity at intervals, a movable contact is arranged between the normally open contacts and the normally closed contacts, the movable contact is arranged on the movable plate, a spring wire is connected with the movable contact, and a blocking assembly is arranged in the installation cavity and is linked with the movable plate, the blocking assembly is used for blocking the connection between the movable contact and an electric arc.

[0009] Further, the driving plate comprises a first segment and a second segment which are connected with each other, an obtuse angle is arranged between the first segment and the second segment, the magnetic attraction plate is arranged on the first segment, a waist hole is arranged on the second segment, a guide column is arranged on the movable plate, and the guide column is slidably tangent to the waist hole.

[0010] Further, the blocking assembly comprises a hinged plate which is hingedly arranged on the partition plate, an insulation sheet is connected with the end of the hinged plate, a resisting block is arranged on the movable plate, an arc surface is arranged on the resisting block in an inclined manner, the hinged plate is connected with the partition plate through a second torsion spring, and the hinged plate is movably overlapped with the arc surface.

[0011] Further, an arc extinguishing assembly is arranged in the installation cavity.

[0012] Further, the arc extinguishing assembly comprises an arc extinguishing slot which is arranged on one side of the normally open contact, a plurality of conductive sheets are arranged in the arc extinguishing slot at intervals, and a wind power assembly is arranged on the other side of the normally open contact.

[0013] Further, the wind power assembly comprises an installation pipe, the end of the installation pipe is connected with the inner wall of the installation cavity, a fan blade is rotatably arranged in the end of the installation pipe, a plurality of air inlets are annularly arranged on the side of the installation pipe, a transmission mechanism is arranged on the fan blade and is linked with the movable plate.

[0014] Further, the transmission mechanism comprises a pinion which is coaxially connected with the fan blade, a large gear is rotatably arranged on the inner wall of the installation cavity, an opening is arranged on the end of the installation pipe, the large gear is engaged with the pinion through the opening, and a rack which is engaged with the large gear is connected with the movable plate.

[0015] Further, the movable plate is provided with a fixed plate, and a pull spring is connected to the inner wall of the mounting cavity and connected to the side of the fixed plate away from the normally open contact.

[0016] Further, a cylinder is arranged in the mounting cavity, and the pull spring and the spring wire are sleeved at two ends of the cylinder and separated by the fixed plate.

[0017] The electromagnetic relay further comprises a shell, and the insulator is arranged in the shell, wherein the bottom of the shell is provided with a plurality of pins, and the enameled coil, the normally open contact, the normally closed contact and the spring wire are electrically connected to the plurality of pins respectively.

[0018] The beneficial effects of the present application are as follows:

[0019] The present application separates the enameled coil from the normally open contact, the normally closed contact and the movable contact in another chamber by the cooperation of the insulating sleeve, the movable plate and the driving plate, and then drives the movable plate to slide to separate the movable contact from the normally open contact when the enameled coil is powered off and the iron core stops attracting the magnetic plate and the driving plate is reset under the action of the first torsional spring, and then drives the blocking assembly to act to block the electric arc between the normally open contact and the movable contact, so that the safety hazards of the electromagnetic relay such as discharge and creepage are solved.

[0020] The present application increases the stroke of the movable plate sliding and expands the distance between the normally open contact and the normally closed contact by the bending design of the driving plate, so that the electric arc between the movable contact and the normally open contact is blocked by the blocking assembly.

[0021] The present application drives the hinged plate to slide on the arc surface and moves the insulating sheet away from the movable plate when the movable plate slides towards the normally open contact, and then the movable contact can abut against the normally open contact, and when the movable plate slides towards the normally closed contact, the electric arc is lengthened and the electric field is weakened, the hinged plate slides in the opposite direction on the arc surface and moves towards the movable plate under the action of the second torsional spring, and then the insulating sheet is inserted between the normally open contact and the movable contact to block the electric arc. BRIEF DESCRIPTION OF DRAWINGS

[0022] Fig. 1 is a perspective view of the electromagnetic relay in a powered state according to the present application;

[0023] Fig. 2 is a partial structure sectional view of Fig. 1 according to the present application;

[0024] Fig. 3 is a partial structure sectional view of the electromagnetic relay in a power-off state according to the present application;

[0025] Fig. 4 is an enlarged view of A in Fig. 3 of the present application;

[0026] Fig. 5 is a structural side view of Fig. 3 of the present application;

[0027] Fig. 6 is a structural sectional view of a wind power assembly of the present application;

[0028] Reference signs: 1, insulator; 2, mounting cavity; 3, partition; 4, insulating sleeve; 5, enameled coil; 6, iron core; 7, driving plate; 701, first section; 702, second section; 703, waist hole; 704, guide post; 705, roller; 8, first torsional spring; 9, magnetic attraction plate; 10, movable slot; 11, movable plate; 1101, slide rail; 12, normally open contact; 13, normally closed contact; 14, movable contact; 15, spring wire; 16, blocking assembly; 1601, hinged plate; 1602, insulating sheet; 1603, abutting block; 1604, camber; 1605, second torsional spring; 17, arc extinguishing assembly; 1701, arc extinguishing slot; 1702, conductive sheet; 1703, wind power assembly; 17031, mounting tube; 17032, fan blade; 17033, air inlet; 17034, transmission mechanism; 170341, pinion; 170342, gear; 170343, opening; 170344, rack; 18, fixed plate; 19, tension spring; 20, cylinder; 21, housing; 22, pin; 23, fixed block. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application.

[0030] As shown in Figs. 1-6, one embodiment of the present application proposes an insulation protection structure, comprising:

[0031] The insulator 1 is made of polycarbonate material with good insulation performance, and is provided with a mounting cavity 2. The mounting cavity 2 is provided with a partition plate 3, and is divided into two cavities by the partition plate 3. The partition plate 3 is fixed with an insulating sleeve 4 made of epoxy resin with smooth surface and good insulation performance. The insulating sleeve 4 is provided with a lacquered coil 5 on the outer side, and is fixed with an iron core 6 on the inner side. The iron core 6 is made of soft magnetic material such as silicon steel sheet. The mounting cavity 2 is hingedly provided with a driving plate 7 close to the end of the iron core 6 and hingedly connected to the side of the mounting cavity 2 away from the partition plate 3. The driving plate 7 is connected to the mounting cavity 2 through a first torsion spring 8. The fixed end of the first torsion spring 8 is connected to the inner wall of the mounting cavity 2, and the movable end of the first torsion spring 8 is connected to the driving plate 7, so as to drive the driving plate 7 to rotate away from the iron core 6. The driving plate 7 is fixed with a magnetic plate 9 made of iron and arranged on the side of the driving plate 7 close to the iron core 6. The magnetic plate 9 is magnetically connected to the end of the iron core 6. The lacquered coil 5 magnetizes the iron core 6, and the driving plate 7 rotates towards the iron core 6 under the magnetic force. The iron core 6 can attract the magnetic plate 9. When the lacquered coil 5 is powered off, the iron core 6 stops attracting the magnetic plate 9, and the driving plate 7 is reset under the action of the first torsion spring 8.

[0032] The movable slot 10 is arranged on the partition plate 3, and the end of the driving plate 7 movably penetrates the movable slot 10. When the iron core 6 adsorbs the magnetic attraction plate 9, the driving plate 7 is in contact with one end of the movable slot 10. When the driving plate 7 is reset, the driving plate 7 is in contact with the other end of the movable slot 10. The other side of the partition plate 3 is slidably connected with the movable plate 11. The driving plate 7 and the movable plate 11 are both made of epoxy resin and have insulation properties. The inner wall of the partition plate 3 is provided with a sliding rail 1101 parallel to the movable slot 10. The movable plate 11 is slidably arranged on the sliding rail 1101 and movably connected with the end of the driving plate 7. When the driving plate 7 slides in the movable slot 10, the movable plate 11 can be driven to slide. The installation cavity 2 is provided with a normally open contact 12 and a normally closed contact 13. The installation cavity 2 is provided with two fixed blocks 23. The normally open contact 12 and the normally closed contact 13 are fixed on the two fixed blocks 23 respectively. A movable contact 14 is arranged between the normally open contact 12 and the normally closed contact 13. The movable contact 14 is arranged on the movable plate 11. When the iron core 6 adsorbs the magnetic attraction plate 9, the driving plate 7 can drive the movable plate 11 to slide towards the normally open contact 12. The movable contact 14 is in contact with the normally open contact 12, and the circuit is turned on. When the driving plate 7 is reset, the driving plate 7 can drive the movable plate 11 to slide towards the normally closed contact 13. The movable contact 14 is separated from the normally open contact 12 and is in contact with the normally closed contact 13. At this time, the circuit is turned off. The movable contact 14 is connected with a spring wire 15 and can be stretched with the movement of the movable plate 11. The installation cavity 2 is provided with a blocking assembly 16. The blocking assembly 16 has insulation properties and is connected with the movable plate 11. The blocking assembly 16 is used to block the connection between the movable contact 14 and the electric arc. When the movable contact 14 is separated from the normally open contact 12, that is, when the electromagnetic relay is turned off, the gap between the normally open contact 12 and the movable contact 14 is small. The voltage breaks through the air to generate high-temperature and high-conductivity ionized gas, that is, electric arc. At this time, the electric arc can be stretched with the movement of the movable contact 14. Subsequently, when the movable contact 14 is not in contact with the normally closed contact 13, the movable plate 11 can drive the blocking assembly 16 to act to block the electric arc between the movable contact 14 and the normally open contact 12, thereby effectively solving the safety hazard of the relay arc;

[0033] The insulating sleeve 4 can protect the enameled coil 5, so that the outer insulating paint is not easy to be worn out, so that the iron core 6 is not easy to be short-circuited. Then the enameled coil 5 is separated from the other chamber by the partition plate 3. The enameled coil 5 is separated from the normally open contact 12, the normally closed contact 13 and the movable contact 14 by the cooperation of the movable plate 11 and the driving plate 7 which have insulation properties. Therefore, the electromagnetic relay is not easy to appear the discharge creeping when used. When the movable contact 14 is separated from the normally open contact 12 and moves towards the normally closed contact 13, the electric arc between the normally open contact 12 and the movable contact 14 can be blocked by the blocking assembly 16, so as to prevent the circuit from being short-circuited.

[0034] The application separates the enameled coil 5 from the normally open contact 12, the normally closed contact 13 and the movable contact 14 in another chamber by adopting the cooperation design of the insulating sleeve 4, the movable plate 11 and the driving plate 7, and then by adopting the design of the blocking assembly 16, when the enameled coil 5 is powered off, the iron core 6 stops adsorbing the magnetic suction plate 9, and the driving plate 7 resets under the action of the first torsional spring 8, the movable plate 11 can be driven to slide to separate the movable contact 14 from the normally open contact 12, and then the blocking assembly 16 can be driven to act by the movable plate 11 to block the electric arc between the normally open contact 12 and the movable contact 14. Compared with the prior art, the application can solve the safety hazards of discharge creeping and arc pulling of the electromagnetic relay, thereby improving the safety performance of the electromagnetic relay.

[0035] As shown in Figures 1-6, in some embodiments, the driving plate 7 comprises a first segment 701 and a second segment 702 connected with each other, and an obtuse angle is formed between the two segments, the partition plate 3 is located on the inner side of the angle between the first segment 701 and the second segment 702, the first segment 701 is hinged to the inner wall of the mounting cavity 2, the magnetic suction plate 9 is arranged on the first segment 701, a waist hole 703 is formed on the second segment 702, the waist hole 703 extends along the length direction of the second segment 702, a guide column 704 is arranged on the movable plate 11, the guide column 704 is in sliding contact with the waist hole 703, when the driving plate 7 rotates along the hinge point thereof, the guide column 704 can slide in the waist hole 703, so as to drive the movable plate 11 to slide, a roller 705 is arranged on the side of the guide column 704 to reduce the wear between the guide column 704 and the waist hole 703, the stroke of the driving plate 7 is greater than the stroke of the magnetic suction plate 9, and when the driving plate 7 is lifted, the bent portions of the first segment 701 and the second segment 702 can contact the inner wall of the mounting cavity 2, so as to maximize the stroke of the second segment 702, thereby increasing the stroke of the movable plate 11 and expanding the distance between the normally open contact 12 and the normally closed contact 13, so as to facilitate the blocking assembly 16 to block the electric arc between the movable contact 14 and the normally open contact 12.

[0036] As shown in FIG. 2-6, in some embodiments, the blocking assembly 16 comprises a hinged plate 1601 hinged on the partition plate 3, the hinged plate 1601 is connected with an insulating piece 1602 at the end, the insulating piece 1602 is a ceramic piece in a circular shape, the movable plate 11 is configured with a stopper 1603 on the side facing the hinged plate 1601, the stopper 1603 is provided with an arc surface 1604 obliquely, the spacing between the arc surface 1604 and the movable plate 11 gradually increases from the normally open contact 12 to the normally closed contact 13, the hinged plate 1601 is connected with the partition plate 3 through a second torsion spring 1605, the fixed end of the second torsion spring 1605 is fixed with the partition plate 3, the movable end of the mounting pipe 1703 is connected with the hinged plate 1601, the hinged plate 1601 is movably overlapped with the arc surface 1604, the hinged plate 1601 is overlapped on the movable plate 11 under the action of the second torsion spring 1605, when the movable plate 11 slides towards the normally open contact 12, the hinged plate 1601 can slide on the arc surface 1604 and move the insulating piece 1602 away from the movable plate 11, then the movable contact 14 can be in contact with the normally open contact 12, when the movable plate 11 slides towards the normally closed contact 13, the electric arc is elongated, the electric field is weakened, the hinged plate 1601 can slide in the opposite direction on the arc surface 1604, and under the action of the second torsion spring 1605, at this time, the hinged plate 1601 can move towards the movable plate 11, the insulating piece 1602 is inserted between the normally open contact 12 and the movable contact 14 to block the electric arc.

[0037] As shown in FIG. 2, 3, 4 and 6, in some embodiments, the mounting cavity 2 is provided with an arc extinguishing assembly 17, because the electric arc is a high-temperature and high-conductivity ionized gas generated by voltage breakdown of air, which is easy to change, when the electric arc bypasses the insulating piece 1602 and connects with the movable contact 14, the movable contact 14 often needs to continue to slide to break the electric arc, the arc extinguishing assembly 17 can eliminate the electric arc around the insulating piece 1602, and cooperate with the insulating piece 1602 to quickly block the electric arc.

[0038] As shown in FIG. 2, FIG. 3, FIG. 4 and FIG. 6, in some embodiments, the arc extinguishing assembly 17 includes an arc chute 1701 arranged on one side of the normally open contact 12, the arc chute 1701 is configured on the inner wall of the mounting cavity 2, and the slot is towards the normally open contact 12, a plurality of conductive sheets 1702 are arranged in the arc chute 1701, the conductive sheets 1702 are stainless steel plates, the plurality of conductive sheets 1702 are arranged in a grid shape, and a wind power assembly 1703 is arranged on the other side of the normally open contact 12, the normally open contact 12 and the slot of the arc chute 1701 are located in the output direction of the wind power assembly 1703, when the insulating sheet 1602 is inserted between the normally open contact 12 and the movable contact 14, the insulating sheet 1602 moves towards the slot direction of the wind power assembly 1703, at this time, the wind power assembly 1703 can blow the arc to deform towards the direction of the insulating sheet 1602, then the insulating sheet 1602 can block the arc, and the broken arc can enter the arc chute 1701 and be divided into multiple segments by the plurality of conductive sheets 1702, and finally be extinguished.

[0039] As shown in FIG. 2, FIG. 3, FIG. 4 and FIG. 6, in some embodiments, the wind power assembly 1703 includes a mounting pipe 17031, the end of the mounting pipe 17031 is connected with the inner wall of the mounting cavity 2, a fan blade 17032 is rotatably installed in the end of the mounting pipe 17031, the fan blade 17032 is coaxial with the mounting pipe 17031, a plurality of air inlets 17033 are annularly arranged on the side of the mounting pipe 17031, a transmission mechanism 17034 is arranged on the fan blade 17032 and is linked with the movable plate 11, when the movable plate 11 slides towards the normally closed contact 13, the fan blade 17032 can be driven to rotate through the transmission mechanism 17034, at this time, the air in the mounting cavity 2 enters the mounting pipe 17031 through the air inlets 17033 and is discharged from the end of the mounting pipe 17031, so as to blow the arc to deform.

[0040] As shown in FIG. 3, FIG. 4 and FIG. 6, in some embodiments, the transmission mechanism 17034 includes a pinion gear 170341 coaxially connected with the fan blade 17032, a large gear 170342 is rotatably installed on the inner wall of the mounting cavity 2, an opening 170343 is configured on the end of the mounting pipe 17031, the large gear 170342 is engaged with the pinion gear 170341 through the opening 170343, which is a speed increasing motion, a rack 170344 engaged with the large gear 170342 is connected to the movable plate 11, when the movable plate 11 slides towards the normally closed contact 13, the rack 170344 can drive the large gear 170342 to drive the pinion gear 170341 to rotate, so as to drive the fan blade 17032 to rotate.

[0041] As shown in FIG. 2, FIG. 3 and FIG. 5, in some embodiments, a fixed plate 18 is configured on the movable plate 11, and a pull spring 19 is connected to the inner wall of the installation cavity 2, which is the side close to and parallel to the normally closed contact 13, and the end is connected to the side of the fixed plate 18 away from the normally open contact 12. The pull spring 19 is used to provide a pulling force to move the movable plate 11 and the fixed plate 18 towards the normally closed contact 13. When the core 6 adsorbs the magnetic suction piece, the pull spring 19 is pulled open and absorbs kinetic energy. When the core 6 stops adsorbing the magnetic suction piece, the pull spring 19 can cooperate with the first torsional spring 8 to quickly reset the movable plate 11. The power driving the rack 170344 to rotate the gear 170342 is derived from this.

[0042] As shown in FIG. 2, FIG. 3 and FIG. 5, in some embodiments, a cylindrical 20 is configured in the installation cavity 2, sliding through the fixed plate 18, and the axis of the cylindrical 20 is parallel to the sliding direction of the movable plate 11. The pull spring 19 and the spring wire 15 are respectively sleeved on both ends of the cylindrical 20 and are separated by the fixed plate 18. This design can protect the pull spring 19 and the spring wire 15 from being twisted and deformed when stretched and contracted.

[0043] An electromagnetic relay comprising the above insulation protection structure, further comprising a shell 21, the insulator 1 is configured in the shell 21, and the shell 21 is provided with a plurality of pins 22. The enameled wire coil 5, the normally open contact 12, the normally closed contact 13 and the spring wire 15 are respectively electrically connected with the plurality of pins 22.

[0044] The above description of disclosed embodiments enables those skilled in the art to carry out or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An insulation protection structure, characterized by, The utility model relates to an insulator (1), insulator (1) inside configuration has installation cavity (2), the installation cavity (2) inside is equipped with the partition (3), one side of the partition (3) is fixed with the insulating sleeve (4), the insulating sleeve (4) outside is equipped with the enameled coil (5) with thread, inside is fixed with the iron core (6), the installation cavity (2) is hinged with the drive plate (7), the drive plate (7) is connected with the installation cavity (2) through the first torsional spring (8), the drive plate (7) is fixed with the magnetic attraction plate (9), and the magnetic attraction plate (9) is magnetically connected with the iron core (6) end part, The movable slot (10) is opened on the partition (3), the end of the drive plate (7) is movably penetrated through the movable slot (10), the other side of the partition (3) is slidably matched with the movable plate (11), the movable plate (11) is movably hinged with the tail end of the drive plate (7), the installation cavity (2) is spaced apart and is provided with the normally open contact (12) and the normally closed contact (13), and the dynamic contact (14) is arranged between the normally open contact (12) and the normally closed contact (13); the dynamic contact (14) is mounted on the movable plate (11), the dynamic contact (14) is connected with the spring wire (15), the installation cavity (2) is provided with the blocking assembly (16) and is linked with the movable plate (11), and the blocking assembly (16) is used to block the connection between the dynamic contact (14) and the electric arc. The drive plate (7) comprises a first section (701) and a second section (702) connected with each other, and an obtuse angle is formed between the first section (701) and the second section (702); the magnetic attraction plate (9) is arranged on the first section (701); a waist hole (703) is formed in the second section (702); a guide column (704) is arranged on the movable plate (11); and the guide column (704) is slidably connected with the waist hole (703).

2. The insulating protective structure according to claim 1, characterized in that, The blocking assembly (16) comprises a hinged plate (1601) hinged to the partition (3); an insulating sheet (1602) is connected to the end of the hinged plate (1601); a resisting block (1603) is arranged on the movable plate (11); an arc surface (1604) is arranged on the resisting block (1603) in an inclined manner; the hinged plate (1601) is connected with the partition (3) through a second torsional spring (1605); and the hinged plate (1601) is movably connected with the arc surface (1604).

3. The insulating protective structure of claim 1, wherein, The installation cavity (2) is provided with an arc extinguishing assembly (17).

4. The insulating protective structure according to claim 3, characterized in that, The arc extinguishing assembly (17) comprises an arc extinguishing groove (1701) arranged on one side of the normally open contact (12); a plurality of conductive sheets (1702) are arranged in the arc extinguishing groove (1701) in a spaced apart manner; and a wind power assembly (1703) is arranged on the other side of the normally open contact (12).

5. The insulating protective structure according to claim 4, characterized in that, The wind power assembly (1703) comprises a mounting pipe (17031); the end of the mounting pipe (17031) is connected with the inner wall of the installation cavity (2); a fan blade (17032) is rotatably arranged in the tail end of the mounting pipe (17031); a plurality of air inlets (17033) are arranged on the circumferential side of the mounting pipe (17031) in a ring-shaped manner; a transmission mechanism (17034) is arranged on the fan blade (17032) and is linked with the movable plate (11).

6. The insulating protective structure according to claim 5, characterized in that, ​ 7. The insulating protective structure according to claim 6, characterized in that, The transmission mechanism (17034) comprises a pinion (170341) coaxially connected with the fan blades (17032), a gear wheel (170342) is rotatably installed on the inner wall of the installation cavity (2), the end of the installation pipe (17031) is provided with an opening (170343), the gear wheel (170342) is engaged with the pinion (170341) through the opening (170343), and the movable plate (11) is connected with a rack (170344) engaged with the gear wheel (170342).

8. The insulating protective structure according to claim 7, characterized in that, A fixed plate (18) is arranged on the movable plate (11), a pull spring (19) is connected to the inner wall of the installation cavity (2), and the end is connected to the side of the fixed plate (18) away from the normally open contact (12).

9. The insulating protective structure according to claim 8, characterized in that, A cylinder (20) is arranged in the installation cavity (2) and slides through the fixed plate (18), the pull spring (19) and the spring wire (15) are respectively sleeved on the two ends of the cylinder (20), and are separated by the fixed plate (18).

10. An electromagnetic relay comprising the insulation protection structure according to any one of claims 1 to 9, characterized in that, Further comprising a shell (21), the insulator (1) is arranged in the shell (21), a plurality of pins (22) are arranged on the bottom of the shell (21), the enameled coil (5), the normally open contact (12), the normally closed contact (13) and the spring wire (15) are respectively electrically connected with the plurality of pins (22).

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