relay

Abstract

The application discloses a relay, which comprises static contact lead-out ends, a moving spring assembly, a push rod assembly, a first anti-rotation assembly and a second anti-rotation assembly. The moving spring assembly comprises a moving spring sheet, two ends of the moving spring sheet in a first direction are used for contacting or separating from a pair of static contact lead-out ends respectively; the first direction is the arrangement direction of the pair of static contact lead-out ends, and the movement direction of the moving spring sheet is defined as a second direction; the moving spring assembly has a first side surface and a second side surface which are oppositely arranged along a third direction perpendicular to the first direction and the second direction; the push rod assembly comprises a contact support with a first side wall and a second side wall which are oppositely arranged along the third direction; the first side wall corresponds to the first side surface, and the second side wall corresponds to the second side surface; the first anti-rotation assembly comprises a first magnet and a second magnet, and the same-pole magnetic poles of the first magnet and the second magnet face each other; and the second anti-rotation assembly comprises a third magnet and a fourth magnet, and the same-pole magnetic poles of the third magnet and the fourth magnet face each other.

Description

Technical Field

[0001] This application relates to the field of electronic control device technology, and more specifically, to a relay. Background Technology

[0002] A relay is an electronic control device that has a control system (also known as an input circuit) and a controlled system (also known as an output circuit), and is commonly used in automatic control circuits. Essentially, a relay is an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays a role in automatic adjustment, safety protection, and circuit switching in circuits.

[0003] A high-voltage DC relay is a type of relay. Existing high-voltage DC relays include a pair of stationary contact leads, a moving assembly, a coil unit, and a magnetic circuit. The moving assembly includes a moving spring assembly, a push rod assembly, and an elastic assembly. The moving spring assembly is mounted on the push rod assembly via the elastic assembly. The magnetic circuit includes a stationary iron core and a moving iron core. The stationary iron core is fixedly disposed within the relay, and the moving iron core is connected to the push rod assembly. When the coil unit is energized, the stationary iron core generates a magnetic force that attracts the moving iron core, thereby driving the push rod assembly and the moving spring assembly to move together, thus closing the contacts.

[0004] However, during relay operation, the moving spring assembly tends to rotate relative to the push rod around its axis, causing friction between the moving spring assembly and the contact support of the push rod assembly, resulting in significant metallic noise. Furthermore, with the frictional wear between the moving spring assembly and the contact support, the deflection angle of the moving spring assembly increases, affecting the contact position between the moving spring assembly and the stationary contact lead, leading to unstable contact resistance. In addition, the friction between the moving spring assembly and the contact support easily generates metal particles. When these metal particles fall onto the contact surface, they can increase the contact resistance or even cause the relay to fail to conduct. Summary of the Invention

[0005] This application provides a relay to solve the problem of easy rotation of the moving spring assembly in the prior art.

[0006] The relay in this application embodiment includes:

[0007] A pair of stationary contact leads;

[0008] A movable spring assembly includes a movable spring sheet, the two ends of which are respectively used to contact or separate from a pair of stationary contact leads along a first direction; the first direction is the arrangement direction of the pair of stationary contact leads; the movable spring assembly has a first side surface and a second side surface arranged opposite to each other along a third direction; wherein, the movement direction of the movable spring sheet is defined as a second direction, and the first direction, the second direction and the third direction are perpendicular to each other;

[0009] A push rod assembly includes a contact support; the contact support has a first sidewall and a second sidewall disposed opposite to each other along the third direction, the first sidewall corresponding to the first sidewall and the second sidewall corresponding to the second sidewall;

[0010] A first anti-rotation component includes a first magnet connected to the first side and a second magnet connected to the first sidewall, wherein the magnetic poles facing each other of the first magnet and the second magnet are the same magnetic poles; and

[0011] The second anti-rotation component includes a third magnet connected to the second side and a fourth magnet connected to the second sidewall, wherein the magnetic poles facing each other of the third magnet and the fourth magnet are the same magnetic poles.

[0012] According to some embodiments of this application, the first sidewall has a first inner side facing the moving spring assembly and a first outer side disposed opposite to the first inner side.

[0013] The second magnet is connected to the first inner side or the first outer side.

[0014] According to some embodiments of this application, the second sidewall has a second inner side facing the moving spring assembly and a second outer side disposed opposite to the second inner side;

[0015] The fourth magnet is connected to the second inner side or the second outer side.

[0016] According to some embodiments of this application, the first magnet, the second magnet, the third magnet, and the fourth magnet are permanent magnets.

[0017] According to some embodiments of this application, the first magnet, the second magnet, the third magnet, and the fourth magnet are flat plates, and the thicknesses of the first magnet, the second magnet, the third magnet, and the fourth magnet are equal.

[0018] According to some embodiments of this application, the push rod assembly further includes a rod portion and a base connected to one axial end of the rod portion;

[0019] The contact bracket is connected to the base, and the contact bracket and the base form a space for accommodating the moving spring assembly.

[0020] According to some embodiments of this application, the contact support further includes a bottom wall, the two ends of which are integrally connected to one end of the first side wall and one end of the second side wall respectively along the third direction; the contact support, the rod and the base are connected by injection molding, and the base covers the bottom wall and one end of the first side wall and the second side wall;

[0021] The push rod assembly also includes a stop plate, which is connected to the other end of the first sidewall and the second sidewall, and is located on the side of the moving spring assembly facing the stationary contact lead-out end.

[0022] According to some embodiments of this application, the contact support further includes a top wall, the two ends of which are integrally connected to one end of the first side wall and one end of the second side wall, respectively, along the third direction;

[0023] The other ends of the first sidewall and the second sidewall are respectively engaged with the base.

[0024] According to some embodiments of this application, the relay further includes a first magnetic conductor disposed on the side of the moving reed facing the stationary contact lead-out end.

[0025] According to some embodiments of this application, the moving spring assembly further includes a second magnetic conductor, which is fixedly connected to the side of the moving spring facing away from the stationary contact lead-out end; the second magnetic conductor is used to form a magnetic circuit with the first magnetic conductor.

[0026] According to some embodiments of this application, the relay further includes:

[0027] An elastic component, connected to the moving spring assembly and the push rod assembly, is used to provide contact pressure.

[0028] An embodiment of the above application has at least the following advantages or beneficial effects:

[0029] The relay of this application embodiment utilizes the repulsive forces generated between the first and second magnets, and between the third and fourth magnets. This repulsive force acts on both sides of the moving spring assembly in a third-direction direction, ensuring that the moving spring assembly remains between the first and second sidewalls without rotating relative to the push rod assembly. This prevents the moving spring assembly from contacting and rubbing against the first and second sidewalls, thus avoiding metallic noise. Furthermore, it ensures the consistency of the contact position between the moving spring assembly and the stationary contact lead-out end, guaranteeing stable contact resistance. Simultaneously, since the moving spring assembly does not rotate relative to the push rod assembly, the risk of friction between the moving spring assembly and the contact support, generating metal particles, is significantly reduced, ensuring the reliability of the relay product. Attached Figure Description

[0030] Figure 1 This is an exploded view of a relay according to an exemplary embodiment.

[0031] Figure 2 This is a top view schematic diagram of a sealing unit according to an exemplary embodiment.

[0032] Figure 3 yes Figure 2 A cross-sectional view along section line AA, showing that the moving spring assembly is not in contact with the stationary contact lead-out end.

[0033] Figure 4 yes Figure 2 A cross-sectional view along the BB section line, showing that the moving spring assembly is not in contact with the stationary contact lead-out end.

[0034] Figure 5 yes Figure 2 A cross-sectional view along section line AA, showing the moving spring assembly in contact with the stationary contact lead-out end.

[0035] Figure 6 yes Figure 2 A cross-sectional view along the BB section line, showing the moving spring assembly in contact with the stationary contact lead-out end.

[0036] Figure 7 This is a cross-sectional view of the moving component shown according to another exemplary embodiment.

[0037] Figure 8 This is a cross-sectional view of a moving component shown according to yet another exemplary embodiment.

[0038] Figure 9 This is a cross-sectional view of a moving component shown according to yet another exemplary embodiment.

[0039] The reference numerals in the attached figures are explained as follows:

[0040] 1. Relay

[0041] 10. Outer shell

[0042] 11. First shell

[0043] 11a. Exposed hole

[0044] 12. Second shell

[0045] 20. Coil Unit

[0046] 21. Coil Frame

[0047] 22. Coil

[0048] 30. Arc extinguishing unit

[0049] 31. Arc-extinguishing magnet

[0050] 32. Yoke clamp

[0051] 40. Sealing unit

[0052] 1000, Contact Container

[0053] 1001, Contact Chamber

[0054] 1002, First Through Hole

[0055] 1100, Insulating Cover

[0056] 1110. Ceramic cover

[0057] 1120, frame piece

[0058] 1200, yoke plate

[0059] 1210, Second Through Hole

[0060] 2000, stationary contact lead-out terminal

[0061] 3000, moving components

[0062] 3100, Moving Spring Assembly

[0063] 3100a, First Side

[0064] 3100b, Second Side

[0065] 3110. Moving reed

[0066] 3200, Push Rod Assembly

[0067] 3210. Push rod

[0068] 3211, Base

[0069] 3212, Pole section

[0070] 3220, Contact Support

[0071] 3221. Bottom wall

[0072] 3222a, First sidewall

[0073] 3222b, Second sidewall

[0074] 3223, First inner surface

[0075] 3224. First outer surface

[0076] 3225, Second inner surface

[0077] 3226. Second outer surface

[0078] 3230, stop plate

[0079] 3300, Flexible Components

[0080] 4000, Magnetic Circuit Section

[0081] 4300, static iron core

[0082] 4310, Through Hole

[0083] 4400, moving iron core

[0084] 4500, Reset component

[0085] 5000, metal cover

[0086] 6100, First Magnet

[0087] 6200, Second Magnet

[0088] 100. First anti-rotation component

[0089] 110. The first magnet

[0090] 120. The second magnet

[0091] 200. Second anti-rotation component

[0092] 210. The Third Magnet

[0093] 220. The Fourth Magnet Detailed Implementation

[0094] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this application will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0095] like Figure 1 As shown, the relay 1 of this embodiment includes a housing 10, a coil unit 20, an arc-extinguishing unit 30, and a sealing unit 40. The sealing unit 40 is disposed inside the housing 10, and the top of the stationary contact lead-out end of the sealing unit 40 is exposed to the outer surface of the housing 10 through the exposure hole 11a. Both the coil unit 20 and the arc-extinguishing unit 30 are disposed inside the housing 10.

[0096] It is understood that the terms "comprising" and "having," and any variations thereof, in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to these processes, methods, products, or devices.

[0097] As an example, the outer casing 10 includes a first casing 11 and a second casing 12, which are connected to form a chamber for accommodating the coil unit 20, the arc-extinguishing unit 30, and the sealing unit 40. In an embodiment of this application, an exposure hole 11a is provided in the first casing 11.

[0098] The arc extinguishing unit 30 is used to extinguish the electric arc generated between the stationary contact lead-out end of the sealing unit 40 and the moving spring.

[0099] As an example, the arc-extinguishing unit 30 includes two arc-extinguishing magnets 31. The arc-extinguishing magnets 31 can be permanent magnets, and each arc-extinguishing magnet 31 can be approximately cuboid in shape. The two arc-extinguishing magnets 31 are respectively disposed on both sides of the sealing unit 40 and are arranged opposite each other along the length direction of the moving spring.

[0100] By setting two opposing arc-extinguishing magnets 31, a magnetic field can be formed around the stationary contact lead-out end and the moving spring. Therefore, the electric arc generated between the stationary contact lead-out end and the moving spring is elongated in a direction away from each other by the action of the magnetic field, thus extinguishing the arc.

[0101] The arc-extinguishing unit 30 also includes two yoke clips 32, which are positioned corresponding to the two arc-extinguishing magnets 31. Furthermore, the two yoke clips 32 surround the sealing unit 40 and the two arc-extinguishing magnets 31. This design, where the yoke clips 32 surround the arc-extinguishing magnets 31, prevents the magnetic field generated by the arc-extinguishing magnets 31 from spreading outwards and affecting the arc-extinguishing effect. The yoke clips 32 are made of soft magnetic material. Soft magnetic materials can include, but are not limited to, iron, cobalt, nickel, and their alloys.

[0102] like Figures 2 to 6 As shown, the sealing unit 40 includes a contact container 1000, a pair of stationary contact leads 2000, a moving component 3000, and a magnetic circuit portion 4000.

[0103] It should be noted that the contact container 1000 is a stationary component, a device used to house the contact assembly, which is mainly a housing and has a chamber. Furthermore, the contact container 1000 can be assembled from multiple components connected in a predetermined assembly manner.

[0104] The contact container 1000 has a contact chamber 1001 inside. The contact container 1000 may include an insulating cover 1100 and a yoke plate 1200. The insulating cover 1100 covers one side surface of the yoke plate 1200, and the insulating cover 1100 and the yoke plate 1200 together form the contact chamber 1001.

[0105] The insulating cover 1100 includes a ceramic cover 1110 and a frame plate 1120. The ceramic cover 1110 is connected to the yoke plate 1200 via the frame plate 1120. The frame plate 1120 can be a ring-shaped metal component, such as an iron-nickel alloy, and one end of the frame plate 1120 is connected to the opening edge of the ceramic cover 1110, for example, by laser welding, brazing, resistance welding, or adhesive bonding. The other end of the frame plate 1120 is connected to the yoke plate 1200, also by laser welding, brazing, resistance welding, or adhesive bonding. The frame plate 1120 positioned between the ceramic cover 1110 and the yoke plate 1200 facilitates their connection.

[0106] The contact container 1000 also has a pair of first through holes 1002, which communicate with the contact chamber 1001. The first through holes 1002 are used for the stationary contact lead-out end 2000 to pass through them. In the embodiments of this application, the first through holes 1002 are formed on the ceramic cover 1110.

[0107] A pair of stationary contact leads 2000 are connected to the ceramic cover 1110 of the contact container 1000, with at least a portion of each stationary contact lead 2000 located within the contact chamber 1001. One of the pair of stationary contact leads 2000 serves as a current inflow terminal, and the other serves as a current outflow terminal.

[0108] A pair of stationary contact leads 2000 are inserted one-to-one into a pair of first through holes 1002 and connected to the ceramic cover 1110, for example by welding.

[0109] The bottom of the stationary contact lead-out terminal 2000 serves as the stationary contact. The stationary contact can be integrally or separately located at the bottom of the stationary contact lead-out terminal 2000.

[0110] Please continue reading. Figures 3 to 6 The moving assembly 3000 includes a moving spring assembly 3100, a push rod assembly 3200, and an elastic assembly 3300. The moving spring assembly 3100 is disposed within the insulating cover 1100 and is mounted on the push rod assembly 3200 via the elastic assembly 3300. The two ends of the moving spring assembly 3100 along a first direction D1 are used to contact or separate from a pair of stationary contact leads 2000, respectively. The first direction D1 is the arrangement direction of the pair of stationary contact leads 2000.

[0111] It should be noted that if a pair of stationary contact leads 2000 and a moving spring assembly 3100 are considered as a set of combinations, then the relays in the embodiments of this application may include multiple sets of combinations.

[0112] The moving spring assembly 3100 may include a moving spring 3110, the two ends of which along the first direction D1 are used to contact or separate from a pair of stationary contact leads 2000, respectively.

[0113] It is understandable that the number of moving reeds 3110 can be one or more.

[0114] Each movable spring 3110 may include a movable spring body and movable contacts located at both ends of the movable spring body. The movable contacts may be separate parts connected to the movable spring body. Alternatively, the movable contacts may be integrally formed onto the movable spring body.

[0115] In this embodiment of the application, the movable spring assembly 3100 includes two movable spring pieces 3110 arranged side by side. One end of each movable spring piece 3110 is used to contact or separate from the stationary contact of one of the stationary contact leads 2000, and the other end of each movable spring piece 3110 is used to contact or separate from the stationary contact of the other stationary contact lead 2000. Further, one end of each movable spring piece 3110 forms two contact points with one of the stationary contact leads 2000, and the other end of each movable spring piece 3110 forms two contact points with the other stationary contact lead 2000.

[0116] In other embodiments, the number of movable reeds 3110 may be one, three, four, five, etc.

[0117] It is understood that the moving spring assembly 3100 includes multiple moving springs 3110. The two ends of each moving spring 3110 along the first direction D1 respectively contact or separate from a pair of stationary contact leads. Since the multiple moving springs 3110 do not restrict each other, a reliable parallel circuit is formed after the two ends of each moving spring 3110 along the first direction D1 contact a pair of stationary contact leads 2000. The number of contacts formed by the multiple moving springs 3110 and one stationary contact lead 2000 is greater than or equal to two, achieving a current shunting effect. Furthermore, according to the principle that the magnitude of the electric repulsion force is proportional to the square of the current, the magnitude of the electric repulsion force at each contact is significantly reduced, which is beneficial to improving the short-circuit withstand capability and enhancing the reliability of the relay.

[0118] Furthermore, the moving spring assembly 3100 may also include a second magnetic conductor 6200, which is fixedly connected to the side of the moving spring 3110 facing away from the stationary contact lead-out end 2000. The function of the second magnetic conductor 6200 will be explained below.

[0119] The number of movable springs 3110 and second magnetic conductors 6200 included in the movable spring assembly 3100 can be corresponding. Specifically, when there is one movable spring 3110, there is also one second magnetic conductor 6200; when there are multiple movable springs 3110 (including two), there are also multiple second magnetic conductors 6200.

[0120] In other embodiments, the number of movable springs 3110 and second magnetic conductors 6200 may not correspond. For example, the movable spring assembly 3100 includes one movable spring 3110 and two second magnetic conductors 6200. The movable spring 3110 is provided with a through hole, and each second magnetic conductor 6200 has a U-shaped structure, with two adjacent sides of the two U-shaped structures inserted into the same through hole.

[0121] like Figures 3 to 6 As shown, the direction of movement of the movable spring 3110 is defined as the second direction D2, and the direction perpendicular to the first direction D1 and the second direction D2 is defined as the third direction D3. The push rod assembly 3200 includes a push rod 3210, a contact bracket 3220, and a stop plate 3230. The push rod 3210 includes a base 3211 and a rod portion 3212, with the base 3211 connected to one axial end of the rod portion 3212. The contact bracket 3220 includes a bottom wall 3221, a first side wall 3222a, and a second side wall 3222b, which are arranged opposite to each other along the third direction D3. One end of the first side wall 3222a and the second side wall 3222b are integrally connected to the two sides of the bottom wall 3221 along the third direction D3, and the other end of the first side wall 3222a and the second side wall 3222b are connected to the stop plate 3230. The moving spring assembly 3100 is mounted in the space enclosed by the contact bracket 3220 and the base 3211 via the elastic component 3300.

[0122] The contact bracket 3220, the rod 3212 and the base 3211 are connected by injection molding, and the base 3211 covers the bottom wall 3221, one end of the first side wall 3222a and one end of the second side wall 3222b.

[0123] The elastic component 3300 is disposed between the moving spring assembly 3100 and the base 3211, and is used to apply an elastic force to the moving spring assembly 3100 toward the stop plate 3230 to provide contact pressure.

[0124] Understandably, the elastic component 3300 can be used in the flexible support spring assembly 3100 to provide contact pressure.

[0125] Of course, in other embodiments, the push rod assembly 3200 may also adopt other structures. For example, the contact support 3220 of the push rod assembly 3200 is an inverted U-shape, including a top wall and two side walls (the two side walls are respectively equivalent to the first side wall 3222a and the second side wall 3222b in the above embodiment), one end of each side wall is integrally connected to the two sides of the top wall along the third direction D3, and the other end of each side wall is snapped into the base 3211.

[0126] When there are multiple movable reeds 3110, the multiple movable reeds 3110 are arranged side by side along the third direction D3.

[0127] Please continue reading. Figures 3 to 6 The yoke plate 1200 has a second through hole 1210, which extends through two opposite sides of the yoke plate 1200 along its thickness direction and communicates with the contact chamber 1001 of the contact container 1000. A rod portion 3212 is axially movably inserted through the second through hole 1210. A base 3211 at one axial end of the rod portion 3212 is located within the contact chamber 1001.

[0128] The sealing unit 40 also includes a metal cover 5000, which is connected to the side of the yoke plate 1200 facing away from the insulating cover 1100, and the metal cover 5000 covers the second through hole 1210 on the yoke plate 1200. The metal cover 5000 and the yoke plate 1200 form a cavity for accommodating the stationary iron core 4300 and the moving iron core 4400 of the magnetic circuit section 4000.

[0129] Return to reference Figure 1 The coil unit 20 includes a coil frame 21 and a coil 22. The coil frame 21 is a hollow cylindrical shape and is made of insulating material. A metal cover 5000 is inserted inside the coil frame 21. The coil 22 surrounds the coil frame 21.

[0130] like Figures 3 to 6 As shown, the magnetic circuit portion 4000 includes a stationary iron core 4300, a moving iron core 4400, and a reset member 4500. The stationary iron core 4300 is fixedly disposed within the metal cover 5000, and a portion of the stationary iron core 4300 extends into the second through hole 1210. The stationary iron core 4300 has a through hole 4310, which is positioned corresponding to the second through hole 1210, for the rod portion 3212 to pass through. The moving iron core 4400 is movably disposed within the metal cover 5000 and is positioned opposite the stationary iron core 4300 along the axial direction of the rod portion 3212. The moving iron core 4400 is connected to the rod portion 3212 and is attracted by the stationary iron core 4300 when the coil 22 is energized. The moving iron core 4400 and the rod portion 3212 can be connected by screwing, riveting, welding, or other methods.

[0131] The reset element 4500 is located inside the metal cover 5000 and is positioned between the stationary iron core 4300 and the moving iron core 4400. It is used to reset the moving iron core 4400 when the coil 22 is de-energized. The reset element 4500 can be a spring and is sleeved on the outside of the rod portion 3212.

[0132] It should be noted that when coil 22 is energized, the stationary iron core 4300 attracts the moving iron core 4400 to move upward, and the moving iron core 4400 can drive the push rod assembly 3200 to move upward via the rod 3212. When the moving spring 3110 contacts the stationary contact lead-out end 2000, the moving spring 3110 is stopped by the stationary contact lead-out end 2000, while the rod 3212 and the base 3211 will continue to move upward until the overtravel is completed.

[0133] During the overtravel process, the base 3211 will compress the elastic component 3300. After being compressed, the elastic component 3300 can provide elastic force to the moving spring assembly 3100 to provide contact pressure.

[0134] Please continue reading. Figure 4 and Figure 6 The relay 1 also includes a first magnetic conductor 6100, which is fixedly connected to the side surface of the stop plate 3230 facing the moving spring assembly 3100, and the first magnetic conductor 6100 is located on the side of the moving spring assembly 3100 facing the stationary contact lead-out end 2000.

[0135] Understandably, when the moving reed 3110 is energized, the first magnetic conductor 6100 is magnetized, thereby forming an attractive force on the moving reed 3110 in the direction of contact closure. This attractive force can resist the electric repulsive force generated by the short-circuit current between the moving reed 3110 and the stationary contact lead-out terminal 2000, preventing the moving reed 3110 and the stationary contact lead-out terminal 2000 from springing apart, thus achieving the purpose of short-circuit protection.

[0136] When the moving spring assembly 3100 includes multiple moving springs 3110 arranged side by side, the number of first magnetic conductors 6100 can be multiple, and the number of first magnetic conductors 6100 corresponds to the number of moving springs 3110. The multiple first magnetic conductors 6100 are respectively located on the side of the multiple moving springs 3110 facing the stationary contact lead-out end 2000.

[0137] Of course, in other embodiments, when the moving spring assembly 3100 includes a plurality of moving springs 3110 arranged side by side, the number of first magnetic conductors 6100 can be one, which spans the plurality of moving springs 3110 in the third direction D3.

[0138] Furthermore, when the moving spring assembly 3100 includes a moving spring 3110 and a second magnetic conductor 6200, the second magnetic conductor 6200 is fixedly connected to the side of the moving spring 3110 facing away from the stationary contact lead-out end 2000. The second magnetic conductor 6200 is used to form a magnetic circuit with the first magnetic conductor 6100.

[0139] The number of second magnetic conductors 6200 corresponds to the number of moving springs 3110. In this embodiment, there are two second magnetic conductors 6200, but this is not a limitation. The two second magnetic conductors 6200 are respectively fixedly connected to the side of the two moving springs 3110 facing away from the stationary contact lead-out end 2000.

[0140] When the two ends of the movable reed 3110 in the first direction D1 contact a pair of stationary contact leads 2000 respectively, current flows through the movable reed 3110, thereby forming a magnetic circuit around the movable reed 3110 between the first magnetic conductor 6100 and the second magnetic conductor 6200. When a short-circuit current passes through the movable reed 3110, an attractive force is generated between the first magnetic conductor 6100 and the second magnetic conductor 6200 along the contact pressure direction. This attractive force can resist the electrodynamic repulsive force generated between the movable reed 3110 and the stationary contact leads 2000 due to the short-circuit current, preventing the movable reed 3110 from springing away from the stationary contact leads 2000.

[0141] It is understandable that the first magnetic conductor 6100 and the second magnetic conductor 6200 can be in the shape of a straight line or a U-shape. The first magnetic conductor 6100 and the second magnetic conductor 6200 can be made of soft magnetic materials such as iron, cobalt, nickel, and their alloys.

[0142] In another embodiment, the first magnetic conductor 6100 may not be mounted on the stop plate 3230 of the push rod assembly 3200, but may be fixed relative to the contact container 1000. In this way, the short-circuit resistance force is transferred to the contact container 1000. Since the contact container 1000 is a stationary component, excessive coil holding force is not required, thereby reducing the power consumption of the relay 1 coil and the size of the relay 1, and improving the short-circuit resistance.

[0143] In one specific embodiment, the first magnetic conductor 6100 can be fixedly connected to the ceramic cover 1110 of the contact container 1000.

[0144] In another specific embodiment, the first magnetic conductor 6100 is also fixedly disposed within the contact container 1000 by a fixed bracket (not shown in the figure). Specifically, the fixed bracket is disposed within the contact container 1000 and is fixedly connected to the yoke plate 1200, and the first magnetic conductor 6100 is fixedly connected to the fixed bracket.

[0145] In another embodiment, the distance between the first magnetic conductor 6100 and the second magnetic conductor 6200 can be designed to be variable. Specifically, the distance between the first magnetic conductor 6100 and the second magnetic conductor 6200 can be adjusted according to the magnitude of the current value, thereby changing the magnitude of the magnetic attraction force generated between the first magnetic conductor 6100 and the second magnetic conductor 6200, which can meet the requirements of short circuit resistance and overload interruption.

[0146] Optionally, the first magnetic conductor 6100 may include multiple stacked magnetic sheets. It is understood that by increasing the number of thinner magnetic sheets, the overall thickness of the first magnetic conductor 6100 can be increased. On the one hand, the thinner magnetic sheets can be manufactured using thin strips, resulting in lower material costs and ease of handling. On the other hand, the number of magnetic sheets can be flexibly adjusted according to the magnitude of the short-circuit current.

[0147] Please continue reading. Figure 4 and Figure 6 The moving spring assembly 3100 has a first side surface 3100a and a second side surface 3100b disposed opposite each other along a third direction D3. The first side surface 3100a corresponds to the first side wall 3222a of the contact support 3220, and the second side surface 3100b corresponds to the second side wall 3222b of the contact support 3220.

[0148] The relay 1 in this embodiment further includes a first anti-rotation component 100 and a second anti-rotation component 200. The first anti-rotation component 100 includes a first magnet 110 connected to a first side surface 3100a and a second magnet 120 connected to a first side wall 3222a, wherein the magnetic poles facing each other of the first magnet 110 and the second magnet 120 are of the same name. The second anti-rotation component 200 includes a third magnet 210 connected to a second side surface 3100b and a fourth magnet 220 connected to a second side wall 3222b, wherein the magnetic poles facing each other of the third magnet 210 and the fourth magnet 220 are of the same name.

[0149] In the relay 1 of this application embodiment, the first magnet 110 and the second magnet 120 of the first anti-rotation component 100 have the same magnetic poles facing each other, so a repulsive force is generated between the first magnet 110 and the second magnet 120. The third magnet 210 and the fourth magnet 220 of the second anti-rotation component 200 have the same magnetic poles facing each other, so a repulsive force is generated between the third magnet 210 and the fourth magnet 220. Since the first magnet 110 and the third magnet 210 are respectively connected to the first side 3100a and the second side 3100b of the moving spring component 3100, and the second magnet 120 and the fourth magnet 220 are respectively connected to the first side wall 3222a and the second side wall 3222b of the contact support 3220, the moving spring component 3100 is subjected to repulsive forces on both sides along the third direction D3, and the moving spring component 3100 is equivalent to being suspended between the first side wall 3222a and the second side wall 3222b. When the moving spring assembly 3100 moves closer to the first sidewall 3222a, the distance between the first magnet 110 and the second magnet 120 decreases, thereby increasing the repulsive force. This repulsive force prevents the moving spring assembly 3100 from continuing to move towards the first sidewall 3222a, thus avoiding contact between the moving spring assembly 3100 and the first sidewall 3222a and the generation of metallic noise. When the moving spring assembly 3100 moves closer to the second sidewall 3222b, the distance between the third magnet 210 and the fourth magnet 220 decreases, thereby increasing the repulsive force. This repulsive force prevents the moving spring assembly 3100 from continuing to move towards the second sidewall 3222b, thus avoiding contact between the moving spring assembly 3100 and the second sidewall 3222b and the generation of metallic noise.

[0150] Therefore, in the relay 1 of this application embodiment, the repulsive force generated between the first magnet 110 and the second magnet 120, and between the third magnet 210 and the fourth magnet 220, causes the moving spring assembly 3100 to be subjected to repulsive forces in the third direction D3. This ensures that the moving spring assembly 3100 remains between the first sidewall 3222a and the second sidewall 3222b without rotating relative to the push rod assembly, thus preventing the moving spring assembly 3100 from contacting and rubbing against the first sidewall 3222a and the second sidewall 3222b and generating metallic noise. Furthermore, it ensures the consistency of the contact position between the moving spring assembly 3100 and the stationary contact lead-out terminal 2000, guaranteeing stable contact resistance. Simultaneously, since the moving spring assembly 3100 does not rotate relative to the push rod assembly, the risk of friction between the moving spring assembly 3100 and the contact support 3220, generating metal particles, is significantly reduced, ensuring the reliability of the relay 1 product.

[0151] In one embodiment, the first magnet 110, the second magnet 120, the third magnet 210 and the fourth magnet 220 are all permanent magnets.

[0152] It is understandable that the magnetic poles facing each other of the first magnet 110 and the second magnet 120 can be either N poles or S poles; the magnetic poles facing each other of the third magnet 210 and the fourth magnet 220 can also be either N poles or S poles.

[0153] Furthermore, the magnetic poles facing each other of the first magnet 110 and the second magnet 120 may be the same as or different from the magnetic poles facing each other of the third magnet 210 and the fourth magnet 220. For example, in one embodiment, the magnetic poles facing each other of the first magnet 110 and the second magnet 120 may be N poles, and the magnetic poles facing each other of the third magnet 210 and the fourth magnet 220 may be N poles; in another embodiment, the magnetic poles facing each other of the first magnet 110 and the second magnet 120 may be N poles, and the magnetic poles facing each other of the third magnet 210 and the fourth magnet 220 may be S poles.

[0154] Please continue reading. Figure 4 and Figure 6 The first sidewall 3222a has a first inner sidewall 3223 facing the moving spring assembly 3100 and a first outer sidewall 3224 facing away from the first inner sidewall 3223. The second sidewall 3222b has a second inner sidewall 3225 facing the moving spring assembly 3100 and a second outer sidewall 3226 facing away from the second inner sidewall 3225. A second magnet 120 is connected to the first inner sidewall 3223, and a fourth magnet 220 is connected to the second inner sidewall 3225.

[0155] In one embodiment, the first magnet 110, the second magnet 120, the third magnet 210 and the fourth magnet 220 are all flat plates, and the thicknesses of the first magnet 110, the second magnet 120, the third magnet 210 and the fourth magnet 220 are equal.

[0156] Furthermore, the first magnet 110, the second magnet 120, the third magnet 210 and the fourth magnet 220 can be rectangular plates or circular plates, but are not limited thereto.

[0157] Optionally, along the third direction D3, the orthographic projections of the first magnet 110, the second magnet 120, the third magnet 210, and the fourth magnet 220 on the first inner surface 3223 completely overlap, but this is not a limitation.

[0158] In one embodiment, the first magnet 110 and the third magnet 210 can be connected to the moving spring assembly 3100 by means of bonding, welding or other methods. The second magnet 120 and the fourth magnet 220 can be connected to the contact support 3220 by means of bonding, welding or other methods.

[0159] Please continue reading. Figure 4 and Figure 6When the moving spring assembly 3100 includes a plurality of moving springs 3110 and a plurality of second magnetic conductors 6200, the two outermost second magnetic conductors 6200 among the plurality of second magnetic conductors 6200 have a first side surface 3100a and a second side surface 3100b, respectively.

[0160] In other embodiments, when the moving spring assembly 3100 includes only a plurality of moving springs 3110, the two outermost moving springs 3110 among the plurality of moving springs 3110 have a first side surface 3100a and a second side surface 3100b, respectively.

[0161] In other embodiments, the mounting positions of the four magnets (110, 120, 210, 220) can also be... Figure 7 As shown. Specifically, the first magnet 110 is connected to the first side 3100a of the moving spring assembly 3100, the second magnet 120 is connected to the first outer side 3224, the third magnet 210 is connected to the second side 3100b of the moving spring assembly 3100, and the fourth magnet 220 is connected to the second outer side 3226.

[0162] In another embodiment, the mounting positions of the four magnets (110, 120, 210, 220) can also be... Figure 8 As shown. Specifically, the first magnet 110 is connected to the first side 3100a of the moving spring assembly 3100, the second magnet 120 is connected to the first outer side 3224, the third magnet 210 is connected to the second side 3100b of the moving spring assembly 3100, and the fourth magnet 220 is connected to the second inner side 3225.

[0163] In another embodiment, the mounting positions of the four magnets (110, 120, 210, 220) can also be... Figure 9 As shown. Specifically, the first magnet 110 is connected to the first side 3100a of the moving spring assembly 3100, the second magnet 120 is connected to the first inner side 3223, the third magnet 210 is connected to the second side 3100b of the moving spring assembly 3100, and the fourth magnet 220 is connected to the second outer side 3226.

[0164] It is understood that the various embodiments / implementations provided in this application can be combined with each other without creating contradictions, and will not be described one by one here.

[0165] In the embodiments of this application, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise expressly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0166] In the description of the embodiments of the application, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the application and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the application.

[0167] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the claims. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0168] The above are merely preferred embodiments of the application examples and are not intended to limit the application examples. For those skilled in the art, the application examples can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the application examples should be included within the protection scope of the application examples.

Claims

1. A relay, characterized in that, include: A pair of stationary contact leads; A movable spring assembly includes a movable spring sheet, the two ends of which are respectively used to contact or separate from a pair of stationary contact leads along a first direction; the first direction is the arrangement direction of the pair of stationary contact leads; the movable spring assembly has a first side surface and a second side surface arranged opposite to each other along a third direction; wherein, the movement direction of the movable spring sheet is defined as a second direction, and the first direction, the second direction and the third direction are perpendicular to each other; A push rod assembly includes a contact support; the contact support has a first sidewall and a second sidewall disposed opposite to each other along the third direction, the first sidewall corresponding to the first sidewall and the second sidewall corresponding to the second sidewall; A first anti-rotation component includes a first magnet connected to the first side and a second magnet connected to the first sidewall, wherein the magnetic poles facing each other of the first magnet and the second magnet are the same magnetic poles; and The second anti-rotation component includes a third magnet connected to the second side and a fourth magnet connected to the second sidewall, wherein the magnetic poles facing each other of the third magnet and the fourth magnet are the same magnetic poles.

2. The relay according to claim 1, characterized in that, The first sidewall has a first inner side facing the moving spring assembly and a first outer side facing away from the first inner side; The second magnet is connected to the first inner side or the first outer side.

3. The relay according to claim 1, characterized in that, The second sidewall has a second inner side facing the moving spring assembly and a second outer side facing away from the second inner side; The fourth magnet is connected to the second inner side or the second outer side.

4. The relay according to claim 1, characterized in that, The first magnet, the second magnet, the third magnet, and the fourth magnet are permanent magnets.

5. The relay according to claim 1, characterized in that, The first magnet, the second magnet, the third magnet, and the fourth magnet are flat plates, and the thickness of the first magnet, the second magnet, the third magnet, and the fourth magnet are equal.

6. The relay according to claim 1, characterized in that, The push rod assembly also includes a rod portion and a base connected to one axial end of the rod portion; The contact bracket is connected to the base, and the contact bracket and the base form a space for accommodating the moving spring assembly.

7. The relay according to claim 6, characterized in that, The contact support also includes a bottom wall, the two ends of which are integrally connected to one end of the first side wall and one end of the second side wall respectively along the third direction; the contact support, the rod and the base are connected by injection molding, and the base covers the bottom wall and one end of the first side wall and the second side wall; The push rod assembly also includes a stop plate, which is connected to the other end of the first sidewall and the second sidewall, and is located on the side of the moving spring assembly facing the stationary contact lead-out end.

8. The relay according to claim 6, characterized in that, The contact support also includes a top wall, the two ends of which are integrally connected to one end of the first side wall and one end of the second side wall, respectively, along the third direction. The other ends of the first sidewall and the second sidewall are respectively engaged with the base.

9. The relay according to claim 1, characterized in that, The relay further includes a first magnetic conductor, which is disposed on the side of the moving reed facing the lead-out end of the stationary contact.

10. The relay according to claim 9, characterized in that, The moving spring assembly also includes a second magnetic conductor, which is fixedly connected to the side of the moving spring facing away from the stationary contact lead-out end; the second magnetic conductor is used to form a magnetic circuit with the first magnetic conductor.

11. The relay according to any one of claims 1 to 10, characterized in that, The relay also includes: An elastic component, connected to the moving spring assembly and the push rod assembly, is used to provide contact pressure.

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