Relay with high-efficiency arc extinguishing and low-friction transmission mechanism

Abstract

A relay with an efficient arc extinguishing and low-friction transmission mechanism comprises a shell, an electromagnetic assembly, a driving assembly, a contact assembly and an arc extinguishing assembly. The contact assembly comprises a first terminal, a reed assembly, a second terminal, a moving contact and a static contact. The arc extinguishing assembly comprises a mounting plate, a conductive column, an insulating bottom plate, a first metal plate and a second metal plate. The plane where the first metal plate and the second metal plate are located is perpendicular to the plane where the insulating bottom plate is located, and the first metal plate is located on the side, close to the conductive column, of the insulating bottom plate and makes contact with the conductive column. The electrified first metal plate in contact with the conductive column and the plurality of second metal plates arranged at intervals are arranged to form the grid structure, so that the electric arc can be preferentially guided to the first metal plate, and then the grid structure is used for segmenting and cooling the electric arc, so that the quick guide and efficient extinguishing of the electric arc are realized.

Description

Technical Field

[0001] This invention relates to the field of relay technology, and in particular to a relay with a highly efficient arc-extinguishing and low-friction transmission mechanism. Background Technology

[0002] Relays, as key electrical components that utilize electromagnetic principles to control the switching of circuits, are widely used in automation control, power protection, and signal switching. Their basic working principle involves an electromagnetic system driving contacts to connect or disconnect the controlled circuit. When disconnecting high-current or high-voltage loads, a high-temperature arc is generated momentarily when the moving and stationary contacts separate. If this arc is not extinguished promptly, it will not only burn the contact surface, reducing the relay's lifespan and reliability, but may also cause insulation failure or even equipment safety accidents.

[0003] In existing technologies, arc-extinguishing chambers or arc-extinguishing grids are often placed near the contacts to improve arc-extinguishing efficiency. However, traditional arc-extinguishing structures often suffer from problems such as low arc-extinguishing efficiency, insufficient arc energy absorption, or complex structures and inconvenient assembly. For example, some arc-extinguishing grid structures have poor arc-guiding effects, resulting in long arc transfer paths and slow energy dissipation. Furthermore, some structures pose reliability risks over long-term use due to insecure component fixing or inadequate insulation design.

[0004] Meanwhile, the overall structural design of the relay directly affects its accuracy, lifespan, and stability. Electromagnetic drive systems need to efficiently convert rotary motion into the linear motion required by the contacts. Traditional lever or linkage mechanisms may suffer from problems such as high frictional losses, uneven movement, or interference between components. This not only increases drive energy consumption but may also cause contact movement delays or jitter, affecting the accuracy and speed of opening and closing. Summary of the Invention

[0005] In view of this, the present invention provides a relay with a highly efficient arc extinguishing and low-friction transmission mechanism to solve the above-mentioned technical problems.

[0006] A relay with a high-efficiency arc-extinguishing and low-friction transmission mechanism includes a housing, an electromagnetic assembly disposed on the housing, a drive assembly disposed on the housing, at least one contact assembly disposed on the housing, and at least one arc-extinguishing assembly disposed on the housing. The contact assembly includes a first terminal disposed on the housing, a reed assembly disposed on the housing, a second terminal disposed on the housing, two moving contacts disposed on the reed assembly, and two stationary contacts disposed on the second terminal. One end of the first terminal is disposed within the housing and connected to one end of the reed assembly, and the other end of the first terminal extends out of the housing. One end of the second terminal is disposed within the housing and has the stationary contact disposed thereon, and the other end of the second terminal extends out of the housing. The drive assembly pushes the reed assembly to swing, thereby causing the moving contacts to move closer to or away from the stationary contacts. The arc-extinguishing assembly includes a mounting plate disposed on the housing, two conductive posts disposed on the second terminal, an insulating base plate, and a... The insulating base plate comprises a first metal plate and multiple second metal plates disposed on the insulating base plate. The insulating base plate has a frame structure with a hollow inner cavity. Multiple snap-fit ​​grooves and limiting protrusions are provided on the two opposite inner sidewalls of the insulating base plate. The limiting protrusions extend toward the centerline of the insulating base plate. The limiting protrusions and snap-fit ​​grooves are arranged alternately. The opening direction of the snap-fit ​​grooves faces the housing. Snap-fit ​​protrusions are provided on both sides of the first metal plate and the second metal plate, and the snap-fit ​​protrusions are disposed in the snap-fit ​​grooves. The planes of the first metal plate and the second metal plate are perpendicular to the plane of the insulating base plate. The first metal plate and the second metal plate are spaced apart from each other. The first metal plate is located on the side of the insulating base plate closest to the conductive post and is in contact with the conductive post. The first metal plate is located on the side of the moving contact and the stationary contact, and the distance between the moving contact and the stationary contact is greater than the distance between the moving contact and the first metal plate. The height of the first metal plate is greater than the height of the second metal plate.

[0007] Furthermore, the electromagnetic component includes an electromagnetic coil disposed on the housing, two yokes connected to the electromagnetic coil, a permanent magnet rotatably disposed on the housing, four baffles disposed in pairs on both sides of the permanent magnet, a swing arm disposed on the permanent magnet, and a shielding plate disposed on the permanent magnet.

[0008] Furthermore, the two yokes are L-shaped and symmetrically arranged at both ends of the electromagnetic coil. The permanent magnet is located between the two yokes. The two baffles on both sides of the permanent magnet are spaced apart from each other. One end of the yoke is located between the two baffles and in the direction of movement of the baffles. One end of the swing arm is connected to the permanent magnet, and the other end is movably inserted into the drive assembly. The shielding plate is arranged on the housing, and the end of the permanent magnet away from the housing is rotatably connected to the shielding plate.

[0009] Furthermore, the drive assembly includes a movable rod slidably disposed on the housing, a groove disposed on the movable rod, at least one connecting rod disposed on the movable rod, and at least one rotating rod disposed on the movable rod.

[0010] Furthermore, the housing is hollow and has a partition in the middle, dividing the housing into two mounting slots. The partition has multiple sliding grooves for providing movement space for the drive assembly. The connecting rod passes through the sliding grooves on the partition, and the extension direction of the sliding grooves is parallel to the movement direction of the moving rod.

[0011] Furthermore, one end of the rotating rod is provided with a sleeve, and the other end is provided with two opposing snap-fit ​​grooves. The sleeve is rotatably fitted onto the connecting rod, and the snap-fit ​​grooves are connected to the contact assembly.

[0012] Furthermore, the reed assembly includes two reeds stacked on top of each other, two heat dissipation plates disposed on the reeds, two first fixing members disposed on the reeds, two second fixing members inserted into the reeds, and two auxiliary reeds disposed on the reeds.

[0013] Furthermore, the reed includes two parallel ends spaced apart from each other, two elastic ends disposed on the parallel segments, and a connecting end disposed on the elastic ends. One end of the parallel end is connected to one end of the elastic end, and the other end of one end of the parallel end is provided with the moving contact. The elastic end connects the parallel end and the connecting end. The elastic end has a U-shaped structure, and the two parallel ends are spaced apart.

[0014] Furthermore, the heat sink is disposed on the parallel end, the first fixing member is located at one end of the parallel end, and the second fixing member is located at the middle position of the parallel end. The first fixing member and the second fixing member pass through and fix the two layers of spring sheets and the heat sink.

[0015] Furthermore, the auxiliary spring is located on the end face of the parallel end facing the first terminal, one end of the auxiliary spring is bent toward the first terminal, and the other end is fixed to the parallel end.

[0016] Compared with existing technologies, the relay with a high-efficiency arc-extinguishing and low-friction transmission mechanism provided by the present invention utilizes a grid structure composed of a charged first metal plate in contact with the conductive post and multiple spaced second metal plates. This allows the arc to be preferentially guided to the first metal plate, and then pulled into the grid formed by the second metal plates for segmentation and cooling, thereby extinguishing it rapidly. This effectively reduces contact erosion and achieves rapid arc guidance and efficient extinguishing. The housing is divided into two mounting slots by a middle partition, resulting in a compact structure. The connecting rod of the drive assembly passes through the sliding groove on the partition to drive the contact assembly, achieving full utilization of space and synchronous driving of multiple contacts. Meanwhile, the rotating rod is rotatably sleeved on the connecting rod via the sleeve, and the locking groove at its other end is engaged in the spring assembly. This allows the rotating rod to rotate slightly relative to the connecting rod while moving linearly with it, adapting to the swinging motion of the spring. This eliminates interference caused by rigid connection, greatly reduces frictional resistance and wear between moving parts, and ensures that the moving and stationary contacts can close and separate quickly and smoothly, thereby improving the service life and operational reliability of the entire drive mechanism. Attached Figure Description

[0017] Figure 1 This invention provides a schematic diagram of the structure of a relay with a highly efficient arc-extinguishing and low-friction transmission mechanism.

[0018] Figure 2 for Figure 1 A schematic diagram of the housing structure of a relay with a high-efficiency arc extinguishing and low-friction transmission mechanism.

[0019] Figure 3 for Figure 1 This is a schematic diagram of the housing of a relay with a highly efficient arc-extinguishing and low-friction transmission mechanism from another angle.

[0020] Figure 4 for Figure 1 A schematic diagram of the electromagnetic components and drive components of a relay with a high-efficiency arc extinguishing and low-friction transmission mechanism.

[0021] Figure 5 for Figure 4 A schematic diagram of the electromagnetic components and drive components of a relay with a high-efficiency arc extinguishing and low-friction transmission mechanism after the shielding plate has been removed.

[0022] Figure 6 for Figure 1 A schematic diagram of the contact assembly and arc-extinguishing assembly of a relay with a high-efficiency arc-extinguishing and low-friction transmission mechanism.

[0023] Figure 7 for Figure 6 An enlarged structural diagram of relay A with a high-efficiency arc extinguishing and low-friction transmission mechanism.

[0024] Figure 8 for Figure 1 A schematic diagram of the contact assembly and rotating rod of a relay with a high-efficiency arc extinguishing and low-friction transmission mechanism.

[0025] Figure 9 for Figure 1 A schematic diagram of the arc-extinguishing component of a relay with a high-efficiency arc-extinguishing and low-friction transmission mechanism.

[0026] Figure 10 for Figure 1 An exploded view of the arc-extinguishing component of a relay with a high-efficiency arc-extinguishing and low-friction transmission mechanism.

[0027] Figure 11 for Figure 1 A schematic diagram of the moving rod of a relay with a high-efficiency arc extinguishing and low-friction transmission mechanism. Detailed Implementation

[0028] The following provides a more detailed description of specific embodiments of the present invention. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the scope of protection of the present invention.

[0029] like Figures 1 to 11 The diagram shows a schematic representation of the relay with a high-efficiency arc-extinguishing and low-friction transmission mechanism provided by the present invention. The relay includes a housing 10, an electromagnetic component 20 disposed on the housing 10, a drive component 30 disposed on the housing 10, at least one contact component 40 disposed on the housing 10, and at least one arc-extinguishing component 50 disposed on the housing 10. It is conceivable that the relay with the high-efficiency arc-extinguishing and low-friction transmission mechanism also includes other functional modules, such as connection components and mounting components, etc., which are well-known to those skilled in the art and will not be described in detail here.

[0030] The housing 10 is hollow and has a partition 11 in the middle, dividing the housing 10 into two mounting slots. Each mounting slot is equipped with a cover plate 12 to close the housing 10. The partition 11 has multiple sliding grooves 13 for providing movement space for the drive assembly 30. The housing 10 is used to support the various functional modules described above; therefore, the housing 10 also has various functional structures, such as screws and bolts, to complete the installation and assembly of these functional modules. These can be configured according to actual needs and will not be described in detail here.

[0031] The electromagnetic component 20 includes an electromagnetic coil 21 disposed on the housing 10, two yokes 22 connected to the electromagnetic coil 21, a permanent magnet 23 rotatably disposed on the housing 10, four baffles 24 respectively disposed in pairs on both sides of the permanent magnet 23, a swing arm 25 disposed on the permanent magnet 23, and a shielding plate 26 disposed on the permanent magnet 23.

[0032] When the electromagnetic coil 21 is energized, it generates N-pole and S-pole magnetic fields at its two ends respectively through the internal coil according to the direction of the current. The two yokes 22 are L-shaped and symmetrically arranged at both ends of the electromagnetic coil 21. They are connected to the electromagnetic coil 21 at one end, so that the other end of the two yokes 22 generates a magnetic field, which interacts with the permanent magnet 23 to drive the permanent magnet 23 to rotate.

[0033] The permanent magnet 23 is located between the two yokes 22. When the two yokes 22 are energized, they generate N-pole and S-pole magnetic fields respectively. The permanent magnet 23 interacts with the two magnetic fields, causing it to rotate. Two baffles 24 are spaced apart on both sides of the permanent magnet 23. One end of the yoke 22 is located between the two baffles 24, and the other end is in the direction of movement of the baffles 24. Therefore, when the permanent magnet 23 rotates, when it reaches a certain angle, the baffles 24 will contact the yokes 22, preventing the permanent magnet 23 from rotating and causing it to only oscillate. By changing the direction of the current in the electromagnetic coil 21, the positions of the N-pole and S-pole magnetic fields can be alternately switched, thereby driving the permanent magnet 23 to oscillate clockwise or counterclockwise.

[0034] One end of the swing arm 25 is connected to the permanent magnet 23, and the other end is movably inserted into the drive assembly 30. When the permanent magnet 23 swings, it drives the swing arm 25 to swing together, thereby causing the swing arm 25 to drive the drive assembly 30 to reciprocate.

[0035] The shielding plate 26 is disposed on the housing 10. The end of the permanent magnet 23 away from the housing 10 is rotatably connected to the shielding plate 26, so that the upper and lower sides of the permanent magnet 23 are rotatably connected to the shielding plate 26 and the housing 10 respectively, so that the permanent magnet 23 can maintain balance when swinging. At the same time, the shielding plate 26 can also shield the magnetic field of the permanent magnet 23 from the influence of the magnetic field of the permanent magnet 23 on the outside of the housing 10.

[0036] The drive assembly 30 includes a movable rod 31 slidably disposed on the housing 10, a groove 32 disposed on the movable rod 31, at least one connecting rod 33 disposed on the movable rod 31, and at least one rotating rod 34 disposed on the movable rod 31.

[0037] A limiting groove 14 is provided on the housing 10. The moving rod 31 is slidably disposed in the limiting groove 14, thereby limiting its movement so that the moving rod 31 can only move linearly along the limiting groove 14. One end of the swing arm 25 is movably inserted into the groove 32. Therefore, when the swing arm 25 swings with the rotation of the permanent magnet 23, it can drive the moving rod 31 to move back and forth in a linear manner. It is conceivable that, since one end of the swing arm 25 swings in an arc while the moving rod 31 moves linearly, a certain gap should be provided between the groove 32 and one end of the swing arm 25 to provide a certain amount of room for movement and avoid mutual interference.

[0038] The connecting rod 33 passes through the groove 13 on the partition 11. The extending direction of the groove 13 is parallel to the moving direction of the moving rod 31, so that the connecting rod 33 slides along the groove 13 while moving with the moving rod 31. The number of connecting rods 33 is the same as the number of contact assemblies 40, and in this embodiment, three are provided.

[0039] One end of the rotating rod 34 is provided with a sleeve 341, and the other end is provided with two opposing snap-fit ​​grooves 342. The sleeve 341 is rotatably sleeved on the connecting rod 33, and the snap-fit ​​grooves 342 are connected to the contact assembly 40, so that when the connecting rod 33 reciprocates, it can drive the contacts in the contact assembly 40 to open or close. A detailed explanation will be given below in conjunction with the contact assembly 40.

[0040] The contact assembly 40 includes a first terminal 41 disposed on the housing 10, a reed assembly 42 disposed on the housing 10, a second terminal 43 disposed on the housing 10, two moving contacts 44 disposed on the reed assembly 42, and two stationary contacts 45 disposed on the second terminal 43.

[0041] One end of the first terminal 41 is disposed within the housing 10 and connected to one end of the spring assembly 42, while the other end of the first terminal 41 extends out of the housing 10 for connection to external components. One end of the second terminal 43 is disposed within the housing 10 and has the stationary contact 45 thereon, while the other end of the second terminal 43 extends out of the housing 10 for connection to external components. The first terminal 41 also has a clearance hole 46 for the rotating rod 34 to pass through.

[0042] The reed assembly 42 includes two reeds 421 stacked on top of each other, two heat sinks 422 disposed on the reeds 421, two first fixing members 423 disposed on the reeds 421, two second fixing members 424 inserted into the reeds 421, and two auxiliary reeds 425 disposed on the reeds 421.

[0043] The reed 421 includes two parallel ends 426 spaced apart from each other, two elastic ends 427 disposed on the parallel section 421, and a connecting end 428 disposed on the elastic end 427.

[0044] One end of the parallel end 426 is connected to one end of the elastic end 427, and the other end of the parallel end 426 is provided with the moving contact 44. The elastic end 427 connects the parallel end 426 and the connecting end 428. The elastic end 427 has a U-shaped structure and is used to provide a deformation structure. The connecting end 428 is connected to one end of the first terminal 41, thereby fixing one end of the spring 421, while the parallel end 426 is freely disposed. The two parallel ends 426 are spaced apart, so that there is a certain gap between the two parallel ends 426, and one end of the rotating rod 34, which is provided with the snap-fit ​​groove 342, passes through the gap between the two parallel ends 426. The two parallel ends 426 are positioned facing each other within the locking groove 342. When the rotating rod 34 is pulled, the parallel ends 426 are pushed through the sidewall of the locking groove 342. Simultaneously, the elastic end 427 can deform, causing the spring 421 to oscillate around the elastic end 427, thereby moving the moving contact 44 closer to or away from the stationary contact 45 to control closing or opening. Since the parallel ends 426 oscillate, while the rotating rod 34 moves linearly under the influence of the connecting rod 33, the sleeve 341 is rotatably fitted onto the connecting rod 33. This allows the rotating rod 34 to rotate slightly relative to the connecting rod 33 while following its linear movement. This avoids interference from rigid connections, significantly reduces frictional resistance between moving parts, reduces wear, and increases the service life of the mechanism. Furthermore, the smooth movement facilitates rapid closing and separation of the moving and stationary contacts. The first terminal 41 and the second terminal 43 are spaced apart from each other. When the relay is closed, the moving contact 44 and the stationary contact 45 are far apart, and the first terminal 41 and the second terminal 43 are not connected to each other. When the moving contact 44 and the stationary contact 45 are in contact, the first terminal 41 and the second terminal 43 are connected through the spring 421, so that the circuit is connected.

[0045] The heat sink 422 is disposed on the parallel end 422. The first fixing member 423 is located at one end of the parallel end 422, and the second fixing member 424 is located in the middle of the parallel end 422. The first fixing member 423 and the second fixing member 424 pass through and fix the two layers of spring sheets 421 and the heat sink 422, thereby fixing the heat sink 422 to the parallel end 422. The heat sink 422 is preferably a copper plate. Since the spring sheet 421, while connecting the first terminal 41 and the second terminal 43, also bears the current flowing through the first terminal 41 and the second terminal 43, the current flowing through it generates heat, causing the spring sheet 421 to heat up. Due to the presence of the heat sink 422, the heat is transferred to the heat sink 422, which is then used for heat dissipation. The thickness of the heat sink 422 is greater than the thickness of the parallel end, which greatly increases the effective heat dissipation area. The heat sink 422 can quickly guide and disperse the heat of the spring sheet 421 onto its larger surface area, and then dissipate it into the surrounding air through convection.

[0046] The auxiliary spring 425 is located on the end face of the parallel end 422 facing the first terminal 41. One end of the auxiliary spring 425 is bent toward the first terminal 41, and the other end is fixed to the parallel end 422. When the parallel end 422 moves and resets toward the stationary contact 45, the bent end of the auxiliary spring 425 provides a reset elastic force, thereby assisting the parallel end 422 in moving.

[0047] The arc extinguishing assembly 50 includes a mounting plate 51 disposed on the housing 10, two conductive posts 52 disposed on the second terminal 43, an insulating base plate 53, a first metal plate 54 disposed on the insulating base plate 53, and a plurality of second metal plates 55 disposed on the insulating base plate 53.

[0048] The mounting plate 51 has an L-shaped structure and is disposed on the inner side wall of the housing 10. The conductive post 52 is spaced apart from the inner side wall of the housing 10, thereby forming a groove structure between the mounting plate 51 and the inner side wall of the housing 10 and between the conductive post 52 and the inner side wall of the housing 10. The two sides of the insulating base plate 53 are engaged in the groove structure, thereby fixing the insulating base plate 53.

[0049] The insulating base plate 53 has a frame structure with a hollow inner cavity. Multiple snap-fit ​​grooves and limiting protrusions 532 are provided on the two opposite inner sidewalls of the insulating base plate 53. The limiting protrusions 532 extend toward the center line of the insulating base plate 53. The limiting protrusions 532 and the snap-fit ​​grooves are arranged alternately. The opening direction of the snap-fit ​​grooves faces the housing 10.

[0050] The first metal plate 54 and the second metal plate 55 are respectively provided with snap-fit ​​protrusions 541 on both sides. The snap-fit ​​protrusions 541 are disposed in the snap-fit ​​grooves, thereby snapping the first metal plate 54 and the second metal plate 55 into the snap-fit ​​grooves. After the groove-shaped structure is inserted into both sides of the insulating base plate 53, the insulating base plate 53 will press the first metal plate 54 and the second metal plate 55 tightly against the inner side wall of the housing 10. The cover plate 12 will also press the insulating base plate 53, thereby fixing the first metal plate 54 and the second metal plate 55. Installation is convenient; they can be directly inserted. The limiting protrusions 532 separate the first metal plate 54 and the second metal plate 55 from each other, thereby forming a grid structure between the first metal plate 54 and the second metal plate 55.

[0051] The planes containing the first metal plate 54 and the second metal plate 55 are perpendicular to the plane containing the insulating base plate 53. The first metal plate 54 and the second metal plate 55 are spaced apart from each other. The first metal plate 54 is located on the side of the insulating base plate 53 closest to the conductive post 52 and is in contact with the conductive post 52, thus making the first metal plate 54 energized while the second metal plate 55 is de-energized. The first metal plate 54 is located on one side of the moving contact 44 and the stationary contact 45, and the distance between the moving contact 44 and the stationary contact 45 is greater than the distance between the moving contact 44 and the first metal plate 54, to facilitate arc guidance near the arc generation point. The height of the first metal plate 54 is greater than the height of the second metal plate 55; this height difference allows the root of the arc to transfer to the first metal plate 54 in the shortest distance and in the easiest way. When the moving contact 44 and the stationary contact 45 separate, the conductive path between them is cut off, and the current attempts to maintain a high-temperature plasma arc through the air. At this time, the arc is located between the moving contact 44 and the stationary contact 45. As the moving contact 44 gradually moves away from the stationary contact 45 during separation, the arc is gradually lengthened. However, since the distance from the moving contact 44 to the first metal plate 54 is less than the distance from the moving contact 44 to the stationary contact 45, and the first metal plate 54 is in contact with the conductive post 52, the first metal plate 54 is charged and has the same potential as the second terminal 43. This causes the arc to choose the first metal plate 54, which has a similar potential and is closer, as its path. Therefore, the arc is lengthened and shifts to the path between the moving contact 44 and the first metal plate 54. When the electric arc enters the grid structure formed by the spaced arrangement of multiple second metal plates 55, the electric arc will be driven by the force in the magnetic field to move towards the multiple second metal plates 55. Since the multiple second metal plates 55 are spaced apart, the electric arc cannot pass through directly. Instead, it needs to break down the air between the multiple second metal plates 55, dividing it into multiple short arcs with lower voltage. At the same time, the second metal plates 55 quickly absorb the heat of the electric arc to cool it down, so that the electric arc cannot be maintained and is quickly extinguished.

[0052] Compared with existing technologies, the relay with a high-efficiency arc extinguishing and low-friction transmission mechanism provided by the present invention utilizes a grid structure composed of a charged first metal plate 54 in contact with the conductive post 52 and multiple spaced second metal plates 55. This allows the arc to be preferentially guided to the first metal plate 54, and then pulled into the grid formed by the second metal plates 55 for segmentation and cooling, thereby extinguishing it rapidly. This effectively reduces contact erosion and achieves rapid arc guidance and efficient extinguishing. The housing 10 is divided into two mounting slots by a middle partition 11, resulting in a compact structure. The connecting rod 33 of the drive assembly 30 passes through the sliding groove 13 on the partition 11 to drive the contact assembly 40, achieving full utilization of space and synchronous driving of multiple contacts. Meanwhile, the rotating rod 34 is rotatably sleeved on the connecting rod 33 through the sleeve 341, and the locking groove 342 at its other end is locked in the spring assembly 42, so that the rotating rod 34 can rotate slightly relative to the connecting rod 33 while moving linearly with the connecting rod 33, which adapts to the swinging motion of the spring 421, eliminates the interference caused by rigid connection, greatly reduces the frictional resistance and wear between moving parts, and ensures that the moving and stationary contacts can close and separate quickly and smoothly, thereby improving the service life and operational reliability of the entire drive mechanism.

[0053] The above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions or improvements within the spirit of the present invention are covered within the scope of the claims of the present invention.

Claims

1. A relay with a high-efficiency arc-extinguishing and low-friction transmission mechanism, characterized in that: The relay with a high-efficiency arc-extinguishing and low-friction transmission mechanism includes a housing, an electromagnetic assembly disposed on the housing, a drive assembly disposed on the housing, at least one contact assembly disposed on the housing, and at least one arc-extinguishing assembly disposed on the housing. The contact assembly includes a first terminal disposed on the housing, a reed assembly disposed on the housing, a second terminal disposed on the housing, two moving contacts disposed on the reed assembly, and two stationary contacts disposed on the second terminal. One end of the first terminal is disposed within the housing and connected to one end of the reed assembly, while the other end of the first terminal extends out of the housing. One end of the second terminal is disposed within the housing and has the stationary contact disposed thereon, while the other end of the second terminal extends out of the housing. The drive assembly pushes the reed assembly to swing, thereby causing the moving contact to move closer to or away from the stationary contact. The arc-extinguishing assembly includes a mounting plate disposed on the housing, two conductive posts disposed on the second terminal, an insulating base plate, and a mounting plate disposed on the insulating base plate. The base plate has a first metal plate and multiple second metal plates disposed on the insulating base plate. The insulating base plate has a frame structure with a hollow inner cavity. Multiple snap-fit ​​grooves and limiting protrusions are provided on the two opposite inner sidewalls of the insulating base plate. The limiting protrusions extend toward the center line of the insulating base plate. The limiting protrusions and snap-fit ​​grooves are arranged alternately. The opening direction of the snap-fit ​​grooves faces the housing. Snap-fit ​​protrusions are provided on both sides of the first metal plate and the second metal plate, and the snap-fit ​​protrusions are disposed in the snap-fit ​​grooves. The planes of the first metal plate and the second metal plate are perpendicular to the plane of the insulating base plate. The first metal plate and the second metal plate are spaced apart from each other. The first metal plate is located on the side of the insulating base plate closest to the conductive post and is in contact with the conductive post. The first metal plate is located on the side of the moving contact and the stationary contact, and the distance between the moving contact and the stationary contact is greater than the distance between the moving contact and the first metal plate. The height of the first metal plate is greater than the height of the second metal plate.

2. The relay with a high-efficiency arc-extinguishing and low-friction transmission mechanism as described in claim 1, characterized in that: The electromagnetic assembly includes an electromagnetic coil disposed on the housing, two yokes connected to the electromagnetic coil, a permanent magnet rotatably disposed on the housing, four baffles disposed in pairs on both sides of the permanent magnet, a swing arm disposed on the permanent magnet, and a shielding plate disposed on the permanent magnet.

3. The relay with a high-efficiency arc-extinguishing and low-friction transmission mechanism as described in claim 2, characterized in that: Two L-shaped yokes are symmetrically arranged at both ends of the electromagnetic coil. The permanent magnet is located between the two yokes. Two baffles on both sides of the permanent magnet are spaced apart from each other. One end of the yoke is located between the two baffles and in the direction of movement of the baffles. One end of the swing arm is connected to the permanent magnet, and the other end is movably inserted into the drive assembly. The shielding plate is arranged on the housing. The end of the permanent magnet away from the housing is rotatably connected to the shielding plate.

4. The relay with a high-efficiency arc-extinguishing and low-friction transmission mechanism as described in claim 1, characterized in that: The drive assembly includes a movable rod slidably disposed on the housing, a groove disposed on the movable rod, at least one connecting rod disposed on the movable rod, and at least one rotating rod disposed on the movable rod.

5. The relay with a high-efficiency arc-extinguishing and low-friction transmission mechanism as described in claim 4, characterized in that: The housing is hollow and has a partition in the middle, which divides the housing into two mounting slots. The partition has multiple sliding grooves for providing movement space for the drive assembly. The connecting rod passes through the sliding grooves on the partition, and the extension direction of the sliding grooves is parallel to the movement direction of the moving rod.

6. The relay with a high-efficiency arc-extinguishing and low-friction transmission mechanism as described in claim 4, characterized in that: One end of the rotating rod is provided with a sleeve, and the other end is provided with two opposing snap-fit ​​grooves. The sleeve is rotatably fitted onto the connecting rod, and the snap-fit ​​grooves are connected to the contact assembly.

7. The relay with a high-efficiency arc-extinguishing and low-friction transmission mechanism as described in claim 1, characterized in that: The reed assembly includes two reeds stacked on top of each other, two heat dissipation plates disposed on the reeds, two first fixing members disposed on the reeds, two second fixing members inserted into the reeds, and two auxiliary reeds disposed on the reeds.

8. The relay with a high-efficiency arc-extinguishing and low-friction transmission mechanism as described in claim 7, characterized in that: The reed includes two parallel ends spaced apart from each other, two elastic ends disposed on the parallel segments, and a connecting end disposed on the elastic ends. One end of the parallel end is connected to one end of the elastic end, and the other end of one end of the parallel end is provided with the moving contact. The elastic end connects the parallel end and the connecting end. The elastic end has a U-shaped structure, and the two parallel ends are spaced apart.

9. The relay with a high-efficiency arc-extinguishing and low-friction transmission mechanism as described in claim 8, characterized in that: The heat sink is disposed on the parallel end, the first fixing member is located at one end of the parallel end, and the second fixing member is located at the middle position of the parallel end. The first fixing member and the second fixing member pass through and fix the two layers of spring sheets and the heat sink.

10. The relay with a high-efficiency arc-extinguishing and low-friction transmission mechanism as described in claim 8, characterized in that: The auxiliary spring is located on the end face of the parallel end facing the first terminal. One end of the auxiliary spring is bent toward the first terminal, and the other end is fixed to the parallel end.

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