A balanced force sealed electromagnetic relay

Abstract

The present invention discloses a balanced force sealed electromagnetic relay, comprising a relay housing, an electromagnetic system is provided at the upper end of the relay housing, a contact system is installed at the middle end of the relay housing, a support plate is installed at the lower end of the relay housing, an arc extinguishing system is installed at the upper end of the support plate, and a rotating system is provided on one side of the arc extinguishing system. The moving contact and the static contact of the present invention move toward each other and contact, and the two are pressed against each other, so that the contact pressure can be quickly increased to the pre-pressure value, which can ensure a larger contact pressure and tracking, reduce contact erosion and wear, meet higher environmental indicators and life indicators, and ensure contact reliability during long-term work; when the moving contact and the static contact are separated in different directions, the moving contact end and the static contact end are quickly pulled apart, and the contact pressure drops rapidly from the pre-pressure value to zero at the moment when the contact is about to be disconnected, which can reduce the erosion time and the pull-in and release rebound when the contact resistance approaches zero, and improve the arc extinguishing effect.

Description

Technical Field

[0001] The invention mainly relates to the technical field of electromagnetic relays, and in particular to a balanced force sealed electromagnetic relay. Background Art

[0002] Electromagnetic relay is an electronic control device, which has a control system (also known as input circuit) and a controlled system (also known as output circuit). It is usually used in automatic control circuits. It is actually an "automatic switch" that uses a smaller current and a lower voltage to control a larger current and a higher voltage. Therefore, it plays the role of automatic adjustment, safety protection, and circuit conversion in the circuit. Electromagnetic relays can be divided into snap-on electromagnetic relays, balanced rotary electromagnetic relays, solenoid electromagnetic relays, balanced force electromagnetic relays, and reed electromagnetic relays according to their mechanism. Among them, the balanced force relay is a power-type sealed electromagnetic relay. It has been widely used in military equipment due to its high environmental adaptability, large contact load capacity, and high working reliability.

[0003] The contact system is an important component of the relay. Most of the existing relay contact systems adopt a moving reed direct-acting (solenoid) structure. The performance of the relay contact system affects the life and safety of the product, and arc erosion is the biggest culprit for damaging the contact system. In the existing technology, the moving contact and the static contact are de-energized for a delay at the beginning of arc extinguishing, resulting in a poor arc extinguishing effect, and the elongated arc of the arc extinguishing magnetic steel cannot be effectively absorbed, resulting in high voltage breakdown between arcs and damage to the contacts, affecting the service life of the relay. Summary of the invention

[0004] The technical solution of the present invention aims at the technical problem that the existing technical solution is too single, and provides a solution that is significantly different from the existing technology. The present invention mainly provides a balanced force sealed electromagnetic relay to solve the technical problems raised in the above background technology.

[0005] The technical solution adopted by the present invention to solve the above technical problems is:

[0006] A balanced force sealed electromagnetic relay comprises a relay housing, an electromagnetic system is arranged at the upper end of the interior of the relay housing, the electromagnetic system comprises a yoke, an armature and a placement block are arranged on both sides of the yoke, a triangular frame plate is installed at the lower end of the yoke, and the middle part of the armature is rotatably installed at the lower end of the triangular frame plate; a contact system is installed at the middle end of the interior of the relay housing, the contact system comprises an adjustment plate located at the lower end of the armature, a slide groove is arranged inside the adjustment plate, moving blocks are slidably arranged on both sides of the slide groove, the two moving blocks and both sides of the lower end of the armature are rotatably connected with driving rods, the lower ends of the two moving blocks are connected with touch plates, moving contacts are arranged on both sides of the lower end of the touch plate, a mounting seat is arranged between the two moving contacts, and static contacts are arranged on both sides of the mounting seat Point; a support plate is installed at the lower end of the relay housing, and an arc extinguishing system is installed at the upper end of the support plate. The arc extinguishing system includes a mounting frame, and two partitions are installed inside the mounting frame, and a screw is rotatably connected between the two partitions. The mounting seat slides between the two partitions and is threadedly connected to the screw, and an axle is rotatably connected between each partition and the adjacent side wall of the mounting frame, and a winding wheel is installed at the middle section of each axle, and a fixed plate is provided at the upper end of the axle, and a slidably installed lifting plate is provided at the upper end of the fixed plate, and a number of equidistantly distributed arc extinguishing plates are installed at the upper end of the lifting plate, a supporting spring is connected between the lifting plate and the fixed plate, a pull wire is wound on the winding wheel, and the other end of the pull wire is connected to the lower end of the lifting plate, and a rotation system is provided on one side of the arc extinguishing system.

[0007] Preferably, an iron core is installed inside the yoke, a coil is sleeved on the iron core, the placement block is installed on the side wall of the yoke, and a restoring spring is built into the placement block, and the other end of the restoring spring is installed on the armature.

[0008] Preferably, when the armature is in contact with the iron core, one of the moving blocks is located at the outermost side of the slide channel, and the driving rod connected to the moving block is inclined.

[0009] Preferably, the two moving contacts are located on the same series circuit.

[0010] Preferably, the two shafts and the screw are axially connected, and the wire drawing directions of the two winding wheels are opposite, that is, when the shaft rotates, one of the winding wheels winds up the wire and the other winding wheel lets out the wire.

[0011] Preferably, the rotation system includes a side plate connected between the adjustment plate and the support plate, and the first short shaft and the second short shaft are rotatably installed at the upper and lower ends of the side plate respectively, and chain plates are installed on both of the first short shafts and the second short shafts, and the two chain plates are connected by a chain belt, and the second short shaft is connected to the axis of one of the shaft rods.

[0012] Preferably, a first bevel gear is installed at one end of the first short shaft, a second bevel gear is meshed with one side of the first bevel gear, a connecting shaft is installed on the axis of the second bevel gear, the connecting shaft is rotatably installed on the side plate, a rotating gear is installed on the connecting shaft, a rack is meshed with one side of the rotating gear, and one end of the rack is installed on one of the side walls of the moving block.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) When the coil is energized, a magnetic field is generated, and the iron core attracts the yoke, causing the lower end of the yoke to tilt. The two moving blocks move toward the left, driving the contact plate to move to the left. The rotating system causes the screw to follow the shaft to rotate in the positive direction, and the moving block moves to the right. One set of moving contacts and the corresponding static contacts move toward each other and contact each other, and the two are pressed against each other. After the coil is de-energized, the magnetic field generated above disappears, the return spring resets, driving the yoke to reset, and the two moving blocks move toward the right, driving the contact plate to move to the right. The moving block causes the drive shaft to rotate in the opposite direction through the rotating system, and the screw follows the shaft to rotate in the opposite direction, causing the moving block to move to the left. The other set of moving contacts and the corresponding static contacts move toward each other and contact each other, causing the moving contact end and the static contact end to quickly move apart. Therefore, the moving contact and the static contact move toward each other and contact, and the two are pressed against each other, which can quickly increase the contact pressure to the pre-pressure value, and can ensure greater contact pressure and tracking, reduce contact erosion and wear, so as to meet higher environmental indicators and life indicators, and ensure contact reliability during long-term operation. When the moving contact and the static contact separate in different directions, the moving contact end and the static contact end are quickly pulled apart, which increases the arc extinguishing speed of the relay. At the moment when the contact is about to be disconnected, the contact pressure drops rapidly from the pre-pressure value to zero, which can reduce the erosion time when the contact resistance approaches zero and the rebound of the pull-in and release, and improve the arc extinguishing effect.

[0015] (2) The shaft drives the reel to rotate, so that the wire is reeled in, and the lifting plate moves down, so that the arc-isolating plate moves down, which will not affect the moving contact and the corresponding static contact from moving toward each other. The other set of shafts is also rotating, but because the wires wound by the two reeling wheels are in opposite directions, the other reel lets out the wire, and the lifting plate moves up under the action of the supporting spring, so that several arc-isolating plates enter between the moving contact and the corresponding static contact. The arc-isolating plates effectively absorb the arc elongated by the arc-extinguishing magnetic steel, thus solving the problem of high-voltage breakdown between arcs and ensuring the contact load and life, further improving the arc-extinguishing effect, and ensuring the service life and safety of the relay;

[0016] (3) The rotating system uses the power of the moving block in the contact system to drive the arc isolation plate in the arc extinguishing system to rise and fall, thereby achieving stable contact and rapid separation between the contacts and increasing the arc extinguishing effect;

[0017] (4) The forward and reverse movement distances of the two moving blocks are equal, so that the pressure of the two moving contacts and the corresponding static contacts when they are in contact is the same, ensuring stable contact pressure and tracking, achieving contact reliability during long-term operation, and realizing a balanced match between the electromagnetic suction force and the restoring reaction force through the balanced force electromagnetic structure, so that the entire product meets the requirements of high voltage, large load, impact, vibration and other high environmental indicators.

[0018] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the electromagnetic system and the contact system of the present invention;

[0021] Figure 3 It is a schematic diagram of the local structure of the adjustment plate of the present invention;

[0022] Figure 4 It is a three-dimensional schematic diagram of the arc extinguishing system of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the arc extinguishing system of the present invention;

[0024] Figure 6 It is a schematic diagram of the structure of the rotation system of the present invention. Description of the drawings:

[0026] 1. Relay housing; 11. Support plate;

[0027] 2. Electromagnetic system; 201. Yoke; 202. Iron core; 203. Coil; 204. Armature; 205. Placement block; 206. Triangular frame plate; 207. Restoration spring;

[0028] 3. Contact system; 301. Adjustment plate; 302. Slideway; 303. Moving block; 304. Driving rod; 305. Touch plate; 306. Moving contact; 307. Mounting seat; 308. Static contact;

[0029] 4. Arc extinguishing system; 401. Mounting frame; 402. Partition plate; 403. Screw rod; 404. Shaft rod; 405. Winding wheel; 406. Fixing plate; 407. Lifting plate; 408. Arc extinguishing plate; 409. Support spring; 410. Pull wire;

[0030] 5. Rotation system; 501. Side plate; 502. First short shaft; 503. Second short shaft; 504. Chain plate; 505. First bevel gear; 506. Second bevel gear; 507. Connecting shaft; 508. Rotation gear; 509. Rack. DETAILED DESCRIPTION

[0031] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0032] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly connected by technicians in the technical field to which the present invention belongs. The terminology used in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0034] Please refer to the attached Figure 1 and 2 The present invention provides a technical solution: a balanced force sealed electromagnetic relay, comprising a relay housing 1, wherein an electromagnetic system 2 is provided at the upper end of the relay housing 1, wherein the electromagnetic system 2 comprises a yoke 201, wherein an armature 204 and a placement block 205 are provided on both sides of the yoke 201, wherein a triangular frame plate 206 is installed at the lower end of the yoke 201, wherein the middle part of the armature 204 is rotatably installed at the lower end of the triangular frame plate 206, wherein an iron core 202 is installed inside the yoke 201, wherein a coil 203 is sleeved on the iron core 202, wherein the placement block 205 is installed on the side wall of the yoke 201, and wherein a restoring spring 207 is built in the placement block 205, wherein the other end of the restoring spring 207 is installed on the armature 204. When the coil 203 is energized, a magnetic field is generated, and the iron core 202 adsorbs the yoke 201, so that the lower end of the yoke 201 is tilted, and the restoring spring 207 is elongated. Figure 1 As shown, after the coil 203 is powered off, the magnetic field generated above disappears, the restoring spring 207 is reset, and the yoke 201 is driven to reset.

[0035] Please refer to the attached Figure 1-3A contact system 3 is installed at the middle end of the relay housing 1, and the contact system 3 includes an adjusting plate 301 located at the lower end of the armature 204. A slide groove 302 is provided inside the adjusting plate 301, and moving blocks 303 are respectively slid on both sides of the slide groove 302. The two moving blocks 303 and the lower ends of the armature 204 are rotatably connected with a driving rod 304 on both sides. A touch plate 305 is connected to the lower ends of the two moving blocks 303. Moving contacts 306 are respectively installed on both sides of the lower ends of the touch plates 305. The two moving contacts 306 are located on the same series circuit. A mounting seat 307 is provided between the two moving contacts 306. Static contacts 308 are respectively installed on both sides of the mounting seat 307. When the armature 204 and the iron core 202 are in contact, one of the moving blocks 303 is located at the outermost side of the slide groove 302, and the driving rod 304 connected to the moving block 303 is inclined to ensure that the driving rod 304 can effectively drive the moving block 303 to move. When the coil 203 is energized, a magnetic field is generated, and the iron core 202 attracts the yoke 201, causing the lower end of the yoke 201 to tilt, and the return spring 207 is stretched. At this time, the two moving blocks 303 move in the same direction, causing the contact plate 305 to move, so that one of the moving contacts 306 contacts the corresponding static contact 308, as shown in FIG. Figure 1 As shown, after the coil 203 is powered off, the magnetic field generated above disappears, the restoring spring 207 is reset, and the yoke 201 is reset. At this time, the two moving blocks 303 move in the other direction, driving the touch plate 305 to move, so that the other moving contact 306 contacts the corresponding static contact 308. The forward and reverse moving distances of the two moving blocks 303 are equal, so that the pressure when the two moving contacts 306 and the corresponding static contacts 308 contact is the same, ensuring stable contact pressure and tracking, achieving contact reliability during long-term work, and realizing the balanced matching of electromagnetic suction and restoring reaction force through the balanced force electromagnetic structure, so that the entire product meets the requirements of high voltage, large load, impact, vibration and other high environmental indicators.

[0036] Please refer to the attached Figure 1-5A support plate 11 is installed at the lower end of the relay housing 1, and an arc extinguishing system 4 is installed at the upper end of the support plate 11. The arc extinguishing system 4 includes a mounting frame 401, and two partitions 402 are installed inside the mounting frame 401. A screw 403 is rotatably connected between the two partitions 402. The mounting seat 307 slides between the two partitions 402 and is threadedly connected to the screw 403. A shaft 404 is rotatably connected between each partition 402 and the adjacent side wall of the mounting frame 401. Each A winding wheel 405 is installed in the middle section of the shaft 404, a fixed plate 406 is provided at the upper end of the shaft 404, a slidably mounted lifting plate 407 is provided at the upper end of the fixed plate 406, a plurality of equally spaced arc-isolating plates 408 are installed at the upper end of the lifting plate 407, a supporting spring 409 is connected between the lifting plate 407 and the fixed plate 406, a pull wire 410 is wound around the winding wheel 405, the other end of the pull wire 410 is connected to the lower end of the lifting plate 407, and a rotating system 5 is provided on one side of the arc extinguishing system 4. After the coil 203 is energized, a magnetic field is generated, and the iron core 202 attracts the yoke 201, causing the lower end of the yoke 201 to tilt, allowing the two driving rods 304 to drive the moving block 303 to move inside the slide channel 302, and the two moving blocks 303 move toward the left, driving the touch plate 305 to move to the left. The moving block 303 drives the driving shaft 404 to rotate forward through the rotation system 5, and the screw 403 follows the shaft 404 to rotate forward, causing the moving block 303 to move to the right. One set of moving contacts 306 and the corresponding static contacts 308 move toward each other and contact, and the two are pressed against each other, which can quickly increase the contact pressure to the pre-pressure value, which can ensure a large contact pressure and tracking, reducing Less contact ablation and wear to meet higher environmental indicators and life indicators, to ensure contact reliability during long-term operation. After the coil 203 is powered off, the magnetic field generated above disappears, the return spring 207 is reset, driving the yoke 201 to reset, and the two moving blocks 303 move toward the right, driving the contact plate 305 to move to the right. The moving block 303 drives the drive shaft 404 to rotate in the opposite direction through the rotation system 5, and the screw 403 follows the shaft 404 to rotate in the opposite direction, so that the moving block 303 moves to the left, and another set of moving contacts 306 and the corresponding static contacts 308 move toward each other and contact, so that the moving contact end and the static contact end are quickly pulled apart, increasing the arc extinguishing speed of the relay.

[0037] Please refer to the attached Figure 1-5The two shafts 404 and the screw 403 are all axially connected, and the pull wire 410 wound by the two winding wheels 405 are in opposite directions, that is, when the shaft 404 rotates, one of the winding wheels 405 winds up the pull wire 410, and the other winding wheel 405 extends the pull wire 410. When the moving contact 306 and the corresponding static contact 308 move toward each other and contact, the shaft 404 at the lower end drives the winding wheel 405 to rotate, so that the pull wire 410 is wound, and the lifting plate 407 moves down, so that the arc isolation plate 408 moves down, which will not affect the moving contact 306 and the corresponding static contact 308 moving toward each other, and the other set of shafts 404 is also rotating, but because the pull wire 410 wound by the two winding wheels 405 is in opposite directions, the other winding wheel 405 lengthens the pull wire 410, and the lifting plate 407 moves up under the action of the supporting spring 409, so that several arc isolation plates 408 enter between the moving contact 306 and the corresponding static contact 308, and the arc isolation plates 408 effectively absorb the elongated arc of the arc extinguishing magnetic steel, thereby solving the high-voltage breakdown between arcs and ensuring the contact load and life, further improving the arc extinguishing effect, and ensuring the service life and safety of the relay.

[0038] Please refer to the attached Figure 1 and 6 The rotation system 5 includes a side plate 501 connected between the adjustment plate 301 and the support plate 11, and the first short shaft 502 and the second short shaft 503 are rotatably installed at the upper and lower ends of the side plate 501, and the two first short shafts 502 and the second short shafts 503 are both installed with chain plates 504, and the two chain plates 504 are connected by a chain belt, and the second short shaft 503 is axially connected to one of the shaft rods 404, and a first bevel gear 505 is installed at one end of the first short shaft 502, and a second bevel gear 506 is meshed on one side of the first bevel gear 505, and a connecting shaft 507 is installed on the axis of the second bevel gear 506, and the connecting shaft 507 is rotatably installed on the side plate 501, and a rotating gear 508 is installed on the connecting shaft 507, and a rack 509 is meshed on one side of the rotating gear 508, and one end of the rack 509 is installed on the side wall of one of the moving blocks 303. When the moving block 303 moves, it will drive the rack 509 to move, and the rack 509 will drive the rotating gear 508 to rotate, so that the connecting shaft 507 drives the second bevel gear 506 to rotate, and the second bevel gear 506 drives the first bevel gear 505 to rotate, so that the first short shaft 502 drives the upper chain plate 504 to rotate. Due to the existence of the chain plate 504 and the chain belt, the second short shaft 503 follows the rotation, and the second short shaft 503 drives the shaft rod 404 to rotate. The rotating system 5 uses the power of the moving block 303 in the contact system 3 to drive the arc isolation plate 408 in the arc extinguishing system 4 to rise and fall, thereby achieving stable contact and rapid separation between the electric contacts and increasing the arc extinguishing effect.

[0039] The specific operation process of the present invention is as follows:

[0040] After the coil 203 is energized, a magnetic field is generated, and the iron core 202 attracts the yoke 201, causing the lower end of the yoke 201 to tilt, the return spring 207 is stretched, and the yoke 201 tilts, so that the two driving rods 304 drive the moving block 303 to move inside the slide channel 302, and the two moving blocks 303 move toward the left, driving the touch plate 305 to move to the left. Due to the movement of the moving block 303, the rack 509 is driven to move, and the rack 509 drives the rotating gear 508 to rotate, so that the connecting shaft 507 drives the second bevel gear 506 to rotate, and the second bevel gear 506 drives the first bevel gear 505 to rotate, so that the first short shaft 502 drives the upper chain plate 504 rotates, and due to the existence of the chain plate 504 and the chain belt, the second short shaft 503 rotates accordingly, and the second short shaft 503 drives the shaft rod 404 to rotate forwardly, and the screw rod 403 rotates forwardly following the shaft rod 404, so that the moving block 303 moves to the right, and one set of moving contacts 306 and the corresponding static contacts 308 move toward each other and contact, and the two are pressed against each other, so that the contact pressure can be quickly increased to the pre-pressure value, which can ensure a larger contact pressure and tracking, reduce contact ablation and wear, so as to meet higher environmental indicators and life indicators, and ensure contact reliability during long-term work. After the coil 203 is powered off, the magnetic field generated above disappears, and the coil 203 is restored. The original spring 207 is reset, driving the yoke 201 to reset, and the two moving blocks 303 move toward the right, driving the contact plate 305 to move to the right. The moving block 303 drives the drive shaft 404 to rotate in the opposite direction through the rotating system 5, and the screw 403 follows the shaft 404 to rotate in the opposite direction, so that the moving block 303 moves to the left, and the other set of moving contacts 306 and the corresponding static contacts 308 move toward each other and contact, so that the moving contact end and the static contact end are quickly pulled apart, increasing the arc extinguishing speed of the relay, and the shaft 404 at the lower end drives the winding wheel 405 to rotate, so that the pull wire 410 is wound up, and the lifting plate 407 moves down, so that the arc isolation plate 408 moves down. , will not affect the moving contact 306 and the corresponding static contact 308 moving toward each other, and the other set of shafts 404 is also rotating, but because the pull wire 410 wound by the two winding wheels 405 is in opposite directions, the other winding wheel 405 lengthens the pull wire 410, and the lifting plate 407 moves upward under the action of the supporting spring 409, so that a plurality of arc isolation plates 408 enter between the moving contact 306 and the corresponding static contact 308, and the arc isolation plates 408 effectively absorb the arc elongated by the arc extinguishing magnetic steel, thereby solving the problem of high voltage breakdown between arcs and ensuring the contact load and life, further improving the arc extinguishing effect, and ensuring the service life and safety of the relay.

[0041] The above is an exemplary description of the present invention in combination with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A balanced force sealed electromagnetic relay, comprising a relay housing (1), characterized in that: An electromagnetic system (2) is provided at the upper end of the interior of the relay housing (1), the electromagnetic system (2) comprising a yoke (201), an armature (204) and a placement block (205) being provided on both sides of the yoke (201), a triangular frame plate (206) being mounted at the lower end of the yoke (201), and a middle portion of the armature (204) being rotatably mounted at the lower end of the interior of the triangular frame plate (206); A contact system (3) is installed at the middle end of the relay housing (1), the contact system (3) comprising an adjustment plate (301) located at the lower end of the armature (204), a slide groove (302) is provided inside the adjustment plate (301), moving blocks (303) are slidably provided on both sides of the slide groove (302), the two moving blocks (303) and the lower ends of the armature (204) are both rotatably connected to a driving rod (304), the lower ends of the two moving blocks (303) are connected to a touch plate (305), the lower ends of the touch plate (305) are respectively installed with moving contacts (306), a mounting seat (307) is provided between the two moving contacts (306), and static contacts (308) are respectively installed on both sides of the mounting seat (307); A support plate (11) is installed at the lower end of the relay housing (1), and an arc extinguishing system (4) is installed at the upper end of the support plate (11). The arc extinguishing system (4) comprises a mounting frame (401), and two partitions (402) are installed inside the mounting frame (401). A screw rod (403) is rotatably connected between the two partitions (402). The mounting seat (307) slides between the two partitions (402) and is threadedly connected to the screw rod (403). A shaft rod (404) is rotatably connected between each partition plate (402) and an adjacent side wall of the mounting frame (401). Each shaft rod The middle section of the shaft (404) is provided with a winding wheel (405), the upper end of the shaft (404) is provided with a fixed plate (406), the upper end of the fixed plate (406) is provided with a slidably mounted lifting plate (407), the upper end of the lifting plate (407) is provided with a plurality of equally spaced arc-isolating plates (408), a supporting spring (409) is connected between the lifting plate (407) and the fixed plate (406), a pulling wire (410) is wound around the winding wheel (405), the other end of the pulling wire (410) is connected to the lower end of the lifting plate (407), and a rotating system (5) is provided on one side of the arc-extinguishing system (4).

2. A balanced force sealed electromagnetic relay according to claim 1, characterized in that: An iron core (202) is installed inside the yoke (201), a coil (203) is sleeved on the iron core (202), the placement block (205) is installed on the side wall of the yoke (201), and a return spring (207) is built into the placement block (205), and the other end of the return spring (207) is installed on the armature (204).

3. A balanced force sealed electromagnetic relay according to claim 2, characterized in that: When the armature (204) and the iron core (202) are in contact, one of the moving blocks (303) is located at the outermost side of the slide channel (302), and the driving rod (304) connected to the moving block (303) is inclined.

4. A balanced force sealed electromagnetic relay according to claim 1, characterized in that: The two moving contacts (306) are located on the same series circuit.

5. The balanced force sealed electromagnetic relay according to claim 1, characterized in that: The two shafts (404) and the screw (403) are axially connected, and the pull wires (410) wound by the two reeling wheels (405) are wound in opposite directions, that is, when the shaft (404) rotates, one of the reeling wheels (405) reels in the pull wire (410) and the other reeling wheel (405) extends the pull wire (410).

6. A balanced force sealed electromagnetic relay according to claim 1, characterized in that: The rotation system (5) comprises a side plate (501) connected between an adjustment plate (301) and a support plate (11); a first short shaft (502) and a second short shaft (503) are rotatably mounted on the upper and lower ends of the side plate (501); a chain plate (504) is mounted on both the first short shaft (502) and the second short shaft (503); the two chain plates (504) are connected via a chain belt; and the second short shaft (503) is axially connected to one of the shaft rods (404).

7. A balanced force sealed electromagnetic relay according to claim 6, characterized in that: A first bevel gear (505) is mounted on one end of the first short shaft (502), a second bevel gear (506) is meshed on one side of the first bevel gear (505), a connecting shaft (507) is mounted on the axis of the second bevel gear (506), the connecting shaft (507) is rotatably mounted on the side plate (501), a rotating gear (508) is mounted on the connecting shaft (507), a rack (509) is meshed on one side of the rotating gear (508), and one end of the rack (509) is mounted on the side wall of one of the moving blocks (303).

Images