Relay

Abstract

The present disclosure relates to a relay, which comprises a pair of stationary contacts, a movable assembly, an insulating cover, and first and second anti-rotation assemblies, wherein the movable assembly is configured to come into contact with or separate from the pair of stationary contacts; the pair of stationary contacts is connected to the insulating cover; the first anti-rotation assembly comprises at least one pair of first magnets; one first magnet in each pair is connected to the movable assembly, and the other first magnet is fixedly arranged relative to the insulating cover; a first magnetic force is formed between the two paired first magnets; the second anti-rotation assembly comprises at least one pair of second magnets; one second magnet in each pair is connected to the movable assembly, and the other second magnet is fixedly arranged relative to the insulating cover; a second magnetic force is formed between the paired second magnets; and the first magnetic force and the second magnetic force are used for restricting the movable assembly from rotating around the axis of the movable assembly.

Description

relay

[0001] This disclosure claims priority to Chinese Patent Application No. 202410695897.8, filed on May 30, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of electronic control device technology, and more specifically, to a relay. Background Technology

[0003] 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.

[0004] A high-voltage DC relay is a type of relay. Existing high-voltage DC relays include a pair of stationary contacts, an insulating cover, a moving assembly, and a magnetic circuit. The moving assembly includes a moving contact, a push rod assembly, and a spring assembly. The moving contact is mounted on the push rod assembly via the spring assembly. The magnetic circuit includes a stationary iron core, a moving iron core, and a coil. 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 is energized, the stationary iron core generates a magnetic force that attracts the moving iron core, thereby causing the push rod assembly and the moving contact to move together, thus closing the contacts.

[0005] In related technologies, in order to limit the range of rotation of the moving component around the axis of the push rod member, a rib is usually provided on the inner wall of the insulating cover so that the side of the moving component and the rib are fitted with a small clearance.

[0006] However, after the relay has been opened and closed multiple times, the side of the moving component can easily come into contact with the raised rib and rub against it. On the one hand, as the number of frictions increases, the wear of the moving component intensifies, which in turn leads to a larger gap between the moving component and the raised rib. This causes the moving component to rotate around the axis of the push rod component to rotate more, affecting the contact position between the moving contact and the stationary contact, resulting in unstable contact resistance. On the other hand, the friction between the moving component and the raised rib can easily generate metal particles. When these metal particles fall onto the contact surface, they can easily cause the contact resistance to increase or even prevent the relay from conducting. Summary of the Invention

[0007] This disclosure provides a relay to improve the problem of unstable contact resistance or even failure to conduct in relays in the related art.

[0008] The relay of this disclosure embodiment includes:

[0009] A pair of stationary contacts;

[0010] A moving component for contacting or separating from the pair of stationary contacts;

[0011] An insulating cover, wherein a pair of the stationary contacts are connected to the insulating cover;

[0012] A first anti-rotation component includes at least one pair of first magnets, one of the first magnets in each pair being connected to the moving component, and the other first magnet being fixedly disposed relative to the insulating cover, with a first magnetic force formed between the two first magnets in the pair; and

[0013] The second anti-rotation component includes at least one pair of second magnets, one of the second magnets in each pair is connected to the moving component, and the other second magnet is fixed relative to the insulating cover, and a second magnetic force is formed between the two pairs of second magnets; the first magnetic force and the second magnetic force are used to restrict the moving component from rotating about the axis of the moving component.

[0014] According to some embodiments of this disclosure, both the first magnetic force and the second magnetic force are repulsive or attractive forces.

[0015] According to some embodiments of this disclosure, when both the first magnetic force and the second magnetic force are repulsive forces, the other first magnet in each pair is fixedly connected to the inner wall surface of the insulating cover, and the other second magnet in each pair is fixedly connected to the inner wall surface of the insulating cover.

[0016] According to some embodiments of this disclosure, when both the first magnetic force and the second magnetic force are attractive forces, the other first magnet in each pair is fixedly connected to the outer wall surface of the insulating cover, and the other second magnet in each pair is fixedly connected to the outer wall surface of the insulating cover.

[0017] According to some embodiments of this disclosure, the first anti-rotation component and the second anti-rotation component are respectively located on both sides of the moving component along a third direction;

[0018] The arrangement direction of a pair of stationary contacts is defined as the first direction, and the movement direction of the moving component is defined as the second direction. The first direction, the second direction, and the third direction are all perpendicular to each other.

[0019] According to some embodiments of this disclosure, the orthographic projections of the two first magnets in a pair on a target plane overlap with each other, and the orthographic projections of the two second magnets in a pair on the target plane overlap with each other.

[0020] The target plane is parallel to the direction of motion of the moving component.

[0021] According to some embodiments of this disclosure, the arrangement direction of a pair of stationary contacts is defined as a first direction, the movement direction of the moving component is defined as a second direction, and a third direction is defined, wherein the first direction, the second direction, and the third direction are mutually perpendicular.

[0022] The target plane is perpendicular to the third direction.

[0023] According to some embodiments of this disclosure, when the coil of the relay is de-energized or energized, the orthographic projections of the two first magnets in a pair on the target plane overlap with each other, and the orthographic projections of the two second magnets in a pair on the target plane overlap with each other.

[0024] According to some embodiments of this disclosure, the first anti-rotation component and the second anti-rotation component are arranged symmetrically about the axis of the moving component.

[0025] According to some embodiments of this disclosure, the two first magnets in each pair are arranged at intervals; and / or, the two second magnets in each pair are arranged at intervals.

[0026] According to some embodiments of this disclosure, the first magnet and the second magnet are permanent magnets.

[0027] According to some embodiments of this disclosure, the moving component includes a contact support;

[0028] The first magnet of the first anti-rotation component is connected to the contact bracket, and the second magnet of the second anti-rotation component is connected to the contact bracket.

[0029] According to some embodiments of this disclosure, the contact support includes two spaced-apart side plates, which are respectively connected to the first magnet and the second magnet.

[0030] According to some embodiments of this disclosure, the side plate has an inner side surface and an outer side surface disposed opposite to the inner side surface along the thickness direction of the side plate;

[0031] The first magnet is connected to the inner or outer side of one of the side plates, and the second magnet is connected to the inner or outer side of the other side plate.

[0032] According to some embodiments of this disclosure, the moving component includes a movable contact component for contacting or separating from the pair of stationary contacts;

[0033] The movable contact assembly has two back-to-back sides, one of which is connected to at least one first magnet and the other of which is connected to at least one second magnet.

[0034] According to some embodiments of this disclosure, the moving component further includes a contact support, the movable contact component passing through the space enclosed by the contact support, and includes a moving contact piece for contacting or separating from a pair of stationary contacts;

[0035] Both ends of the moving contact are connected to the first magnet and the second magnet, which are located outside the contact support.

[0036] According to some embodiments of this disclosure, the movable contact assembly includes a movable contact piece and a lower magnetic conductor, the movable contact piece being used to contact or separate from a pair of stationary contacts, and the lower magnetic conductor being fixedly connected to the side of the movable contact piece facing away from the stationary contacts;

[0037] The relay also includes an upper magnetic conductor located on the side of the moving contact facing the stationary contact, and the upper magnetic conductor and the lower magnetic conductor are used to form a magnetic circuit;

[0038] The two outer sides of the lower magnetic conductor are the two sides, and the first magnet and the second magnet are respectively connected to them.

[0039] According to some embodiments of this disclosure, the moving component includes a movable contact component and a contact support. The movable contact component passes through the space enclosed by the contact support and is used to contact or separate from a pair of stationary contacts. The contact support includes two spaced-apart side plates, and the movable contact component has two oppositely arranged sides.

[0040] The first anti-rotation component includes at least two pairs of first magnets, wherein at least one first magnet is connected to one of the side plates, and at least one first magnet is connected to one of the side edges;

[0041] The second anti-rotation component includes at least two pairs of second magnets, with at least one second magnet connected to another side plate and at least one second magnet connected to another side.

[0042] According to some embodiments of this disclosure, the side plate has an inner side facing the movable contact assembly and an outer side disposed opposite to the inner side along the thickness direction of the side plate;

[0043] The first magnet is connected to the inner or outer side of one of the side plates, and the second magnet is connected to the inner or outer side of the other side plate.

[0044] According to some embodiments of this disclosure, the movable contact assembly includes a movable contact piece for contacting or separating from a pair of stationary contacts;

[0045] Both ends of the moving contact are connected to the first magnet and the second magnet, which are located outside the contact support.

[0046] According to some embodiments of this disclosure, the first magnet located on one side of the movable contact piece is symmetrically arranged with respect to the first magnet on one of the side plates;

[0047] The second magnet located on the other side of the moving contact piece is symmetrically arranged with the second magnet on the other side plate.

[0048] According to some embodiments of this disclosure, the insulating cover includes:

[0049] The top wall is connected to a pair of the aforementioned stationary contacts; and

[0050] A cylindrical sidewall is connected to the outer periphery of the top wall.

[0051] According to some embodiments of this disclosure, the cylindrical sidewall further includes two first sidewalls and two second sidewalls. The two first sidewalls are arranged opposite each other along a first direction, and the two second sidewalls are arranged opposite each other along a third direction. The two first sidewalls and the two second sidewalls are connected end to end in sequence to form a ring structure.

[0052] The arrangement direction of a pair of stationary contacts is defined as the first direction, and the movement direction of the moving component is defined as the second direction. The first direction, the second direction, and the third direction are all perpendicular to each other.

[0053] According to some embodiments of this disclosure, the moving component includes a movable contact component, a push rod, a mounting base, and a contact bracket. The mounting base is connected to one axial end of the push rod, and the contact bracket is connected to the mounting base. The movable contact component passes through the space enclosed by the contact bracket and is used to contact or separate from a pair of stationary contacts.

[0054] The moving component further includes a first elastic element located between the mounting base and the movable contact component, for providing an elastic force to the movable contact component to move toward the stationary contact.

[0055] An embodiment of the above application has at least the following advantages or beneficial effects:

[0056] The relay of this embodiment, by incorporating a first anti-rotation component and a second anti-rotation component, can restrict the rotation of the moving component around its axis. This prevents the generation of metal particles and / or ceramic powder due to contact friction between the moving component and the insulating cover, which could fall onto the contact surface of the contacts, leading to increased contact resistance or even non-conduction. This ensures the reliability of the relay operation. Simultaneously, the first and second anti-rotation components can also reduce the rotation amplitude of the moving component, thereby ensuring the consistency of the contact positions of the moving and stationary contacts and improving the stability of the contact resistance. Attached Figure Description

[0057] Figure 1 is an exploded view of a relay according to an exemplary embodiment.

[0058] Figure 2 is a top view of a relay according to an exemplary embodiment, wherein the housing, coil frame, coil, U-shaped yoke, and arc extinguishing part are omitted.

[0059] Figure 3 is a cross-sectional view along section line AA in Figure 2.

[0060] Figure 4 is a cross-sectional view along the BB section line in Figure 2, and shows a relay according to the first embodiment of this disclosure.

[0061] Figure 5 is a three-dimensional schematic diagram of the first anti-rotation component, the second anti-rotation component, and the moving component after assembly according to the first embodiment of this disclosure.

[0062] Figure 6 is an exploded view of the first anti-rotation component, the second anti-rotation component, the moving component, and the insulating cover according to the first embodiment of this disclosure.

[0063] Figure 7 is a cross-sectional view along the BB section line in Figure 2, and shows a relay according to the second embodiment of this disclosure.

[0064] Figure 8 is a three-dimensional schematic diagram of the first anti-rotation component, the second anti-rotation component, and the moving component after assembly according to the second embodiment of this disclosure.

[0065] Figure 9 is an exploded view of the first anti-rotation component, the second anti-rotation component, the moving component, and the insulating cover according to the second embodiment of this disclosure.

[0066] Figure 10 is a cross-sectional view along the BB section line in Figure 2, and shows a relay according to the third embodiment of this disclosure.

[0067] Figure 11 is a three-dimensional schematic diagram of the first anti-rotation component, the second anti-rotation component, and the moving component after assembly according to the third embodiment of this disclosure.

[0068] Figure 12 is an exploded view of the first anti-rotation component, the second anti-rotation component, the moving component, and the insulating cover according to the third embodiment of this disclosure.

[0069] Figure 13 is a three-dimensional schematic diagram of the first anti-rotation component, the second anti-rotation component, and the moving component after assembly according to the fourth embodiment of this disclosure. Detailed Implementation

[0070] 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 disclosure 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.

[0071] It is understood that the terms "comprising" and "having," and any variations thereof, used in the embodiments of this disclosure, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus 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 such processes, methods, products, or apparatus.

[0072] As shown in Figures 1 to 3, the relay of this embodiment includes a housing 10, an insulating cover 21, a yoke plate 25, a pair of stationary contacts 22, an arc-extinguishing portion 26, a moving assembly 30, and a magnetic circuit portion 40. The insulating cover 21, the yoke plate 25, the pair of stationary contacts 22, the arc-extinguishing portion 26, the moving assembly 30, and the magnetic circuit portion 40 are disposed within the housing 10.

[0073] The outer casing 10 includes an upper casing 11 and a bottom casing 12, which are connected to form a chamber for accommodating an insulating cover 21, a yoke plate 25, a pair of stationary contacts 22, an arc-extinguishing part 26, a moving assembly 30, and a magnetic circuit part 40.

[0074] As shown in Figure 3, the insulating cover 21 has an inner cavity 212. A pair of stationary contacts 22 are mounted on the top of the insulating cover 21. At least a portion of each stationary contact 22 extends into the inner cavity 212 of the insulating cover 21, and each stationary contact 22 also has a stationary contact point at its bottom. The stationary contact point can be integrally or separately disposed at the bottom of the stationary contact 22. One stationary contact 22 serves as the terminal for current inflow, and the other stationary contact 22 serves as the terminal for current outflow.

[0075] In this embodiment of the present disclosure, the top of the insulating cover 21 has two openings 211, each opening 211 communicating with the inner cavity 212. A pair of stationary contacts 22 are respectively disposed in the two openings 211. Furthermore, each stationary contact 22 can be connected to the insulating cover 21 by welding, but is not limited thereto.

[0076] It is understood that the insulating cover 21 can be made of ceramic material, that is, the insulating cover 21 is a ceramic cover, but it is not limited thereto. For example, in other embodiments, the insulating cover 21 can also be made of plastic material.

[0077] In this embodiment, the insulating cover 21 is made of ceramic and is connected to the yoke plate 25 via a frame 24. The frame 24 can be a ring-shaped metal part, such as an iron-nickel alloy. One end of the frame 24 is connected to the edge of the opening of the insulating cover 21, for example, by laser welding, brazing, resistance welding, or adhesive bonding. The other end of the frame 24 is connected to the yoke plate 25, also by laser welding, brazing, resistance welding, or adhesive bonding. The frame 24 is provided between the insulating cover 21 and the yoke plate 25 to facilitate their connection.

[0078] The insulating cover 21 includes a top wall 213 and a cylindrical side wall 214. One axial end of the cylindrical side wall 214 is connected to the outer periphery of the top wall 213, and the other axial end of the cylindrical side wall 214 is connected to the frame piece 24. The top wall 213 and the cylindrical side wall 214 together form an inner cavity 212.

[0079] The top wall 213 has two openings 211, and a pair of stationary contacts 22 are respectively inserted into the two openings 211. Each stationary contact 22 can be connected to the top wall 213 by welding, but is not limited to this.

[0080] Please refer to Figure 3. The moving component 30 includes a movable contact component 30a, a first elastic element 32, and a push rod component 33. The movable contact component 30a is movable between a first position in contact with a pair of stationary contacts 22 and a second position away from the pair of stationary contacts 22. The push rod component 33 is used to move the movable contact component 30a.

[0081] For ease of explanation, the arrangement direction of a pair of stationary contacts 22 is defined as the first direction D1, and the movement direction of the moving component 30 is defined as the second direction D2, wherein the first direction D1 is perpendicular to the second direction D2. The direction perpendicular to both the first direction D1 and the second direction D2 is defined as the third direction D3.

[0082] The movable contact assembly 30a is disposed inside the insulating cover 21 and includes a movable contact piece 31. The two ends of the movable contact piece 31 along the first direction D1 are respectively used to contact or separate from the bottom of a pair of stationary contacts 22.

[0083] The push rod member 33 is movably inserted through the first through hole 251 of the yoke plate 25, and part of the push rod member 33 extends out of the side surface of the yoke plate 25 facing the stationary contact 22, and part of the push rod member 33 extends out of the side surface of the yoke plate 25 away from the stationary contact 22.

[0084] The movable contact 31 is movably mounted on the portion of the push rod member 33 that extends from the side surface of the yoke plate 25 toward the stationary contact 22. The first elastic member 32 is connected to the push rod member 33 and the movable contact 31 and is used to apply an elastic force to the movable contact 31 toward the stationary contact 22 to provide contact pressure.

[0085] As an example, the first elastic element 32 is a spring or a leaf spring, but is not limited thereto. In addition, the number of the first elastic elements 32 can be one or more. When the number of the first elastic elements 32 is multiple, all of the multiple first elastic elements 32 can be springs, or all of them can be leaf springs, or they can be a combination of leaf springs and springs. This disclosure does not particularly limit this.

[0086] A metal cover 27 is also provided on the side of the yoke plate 25 facing away from the stationary contact 22, and the metal cover 27 covers the first through hole 251 of the yoke plate 25. The portion of the push rod member 33 extending out of the side of the yoke plate 25 facing away from the stationary contact 22 is inserted into the metal cover 27.

[0087] Please refer to Figures 1 and 3. The magnetic circuit section 40 includes a moving iron core 41, a stationary iron core 42, a coil frame 43, and a coil 44. The coil frame 43 is a hollow cylindrical shape and is made of insulating material. The coil frame 43 is located on the side of the yoke plate 25 facing away from the stationary contact 22 and surrounds the outer periphery of the metal cover 27. The coil 44 is wound around the outer periphery of the coil frame 43.

[0088] The stationary iron core 42 is fixedly disposed within the metal cover 27, with a portion of the stationary iron core 42 inserted into the first through hole 251. The stationary iron core 42 has a second through hole 421, which corresponds in position to the first through hole 251, allowing the push rod member 33 to be movably inserted into both the first through hole 251 and the second through hole 421. The moving iron core 41 is movably disposed within the metal cover 27 and is positioned opposite the stationary iron core 42 in the second direction D2. The moving iron core 41 is connected to the push rod member 33 and is attracted by the stationary iron core 42 when the coil 44 is energized. The moving iron core 41 and the push rod member 33 can be connected by screwing, riveting, welding, or other methods.

[0089] As shown in Figure 3, the magnetic circuit part 40 also includes a second elastic element 46, which is located inside the metal cover 27 and is disposed between the stationary iron core 42 and the moving iron core 41. It is used to reset the moving iron core 41 when the coil 44 is de-energized.

[0090] In one embodiment, the second elastic element 46 is a spring and is sleeved on the outer periphery of the push rod member 33, but is not limited thereto.

[0091] It should be noted that when the coil 44 is energized, the stationary iron core 42 attracts the moving iron core 41 to move upward, and the moving iron core 41 can drive the push rod component 33 to move upward. When the moving contact 31 contacts the stationary contact 22, the moving contact 31 is stopped by the stationary contact 22, while the push rod component 33 will continue to move upward until it has completed its overtravel.

[0092] During the overtravel process, the first elastic element 32, after being squeezed by the push rod member 33, can provide elastic force to the moving contact piece 31 to provide contact pressure.

[0093] As shown in Figures 1 and 3, the magnetic circuit section 40 also includes a U-shaped yoke 47. The U-shaped yoke 47 includes a bottom yoke plate 471 and two side yoke plates 472. The two side yoke plates 472 are respectively connected to both ends of the bottom yoke plate 471 along the first direction D1, and the two side yoke plates 472 are arranged opposite each other along the first direction D1. The bottom yoke plate 471 is located on the side of the coil frame 43 facing away from the stationary contact 22, and the ends of the two side yoke plates 472 away from the bottom yoke plate 471 are respectively connected to both ends of the yoke plate 25 along the first direction D1. The coil 44, coil frame 43, metal cover 27, and moving iron core 41 are accommodated within the space enclosed by the yoke plate 25, the bottom yoke plate 471, and the two side yoke plates 472 of the U-shaped yoke 47.

[0094] As shown in Figure 1, the arc-extinguishing part 26 includes a permanent magnet 262, which is disposed on the outer surface of the insulating cover 21. By setting the permanent magnet 262 on the outer periphery of the insulating cover 21, a magnetic field can be formed around the stationary contact 22 and the moving contact 31. Therefore, under the action of the magnetic field, the electric arc generated between the stationary contacts 22 will be elongated in a direction away from each other, thus extinguishing the arc.

[0095] The arc-extinguishing section 26 also includes a yoke clamp 261, with a permanent magnet 262 disposed between the side surface of the yoke clamp 261 facing the insulating cover 21 and the outer peripheral surface of the insulating cover 21. The design of the yoke clamp 261 surrounding the permanent magnet 262 prevents the magnetic field generated by the permanent magnet 262 from spreading outwards and affecting the arc-extinguishing effect.

[0096] In one embodiment, the yoke clip 261 is made of a soft magnetic material, which may include, but is not limited to, iron, cobalt, nickel, and their alloys.

[0097] It is understood that the number of yoke clips 261 can be one or two. When there is one yoke clip 261, the yoke clip 261 forms a ring structure and surrounds the outer periphery of the insulating cover 21. When there are two yoke clips 261, each yoke clip 261 can be U-shaped and arranged opposite each other along the first direction D1, with the two yoke clips 261 respectively surrounding the two ends of the insulating cover 21 along the first direction D1.

[0098] Please refer back to Figure 2. The cylindrical sidewall 214 includes two first sidewalls 2141 and two second sidewalls 2142. The two first sidewalls 2141 are arranged opposite each other along a first direction D1, and the two second sidewalls 2142 are arranged opposite each other along a third direction D3. The two first sidewalls 2141 and the two second sidewalls 2142 are connected end to end to form a ring structure. The two second sidewalls 2142 are located around the first position and the second position.

[0099] It is understood that the present disclosure does not impose any particular limitation on the shape of the cylindrical sidewall 214. For example, the annular structure formed by the cylindrical sidewall 214 can be rectangular, circular, elliptical, etc.

[0100] The moving component 30 has a first side 30b and a second side 30c disposed opposite to each other along a third direction D3, the first side 30b and the second side 30c respectively corresponding to two second sidewalls 2142.

[0101] As shown in Figures 4 to 6, the push rod component 33 includes a push rod 333, a mounting base 332, and a contact bracket 331. The mounting base 332 is connected to one axial end of the push rod 333, and the contact bracket 331 is connected to the mounting base 332. The push rod 333 is movably inserted through the first through hole 251 along the second direction D2. At least a portion of the movable contact assembly 30a is disposed within the space enclosed by the contact bracket 331, and a first elastic member 32 is disposed between the movable contact assembly 30a and the mounting base 332.

[0102] As shown in Figure 4, the contact bracket 331 includes two side plates 3311. One end of each side plate 3311 along the second direction D2 is connected to the mounting base 332, and the two side plates 3311 are spaced apart along the third direction D3. The movable contact piece 31 and the first elastic member 32 are located between the two side plates 3311. Each side plate 3311 has an inner side surface 3311a and an outer side surface 3311b arranged opposite to each other along the third direction D3. The inner side surface 3311a of each side plate 3311 faces the movable contact assembly 30a, and the outer side surface 3311b is arranged opposite to the inner side surface 3311a in the thickness direction (third direction D3) of the side plate 3311. The two inner side surfaces 3311a are arranged face-to-face along the third direction D3, and the two outer side surfaces 3311b are arranged opposite to each other along the third direction D3.

[0103] The mounting base 332 can be made of plastic material, and the two side plates 3311, push rod 333 and mounting base 332 can be integrally molded by injection molding, but are not limited thereto.

[0104] Optionally, a connecting plate 3314 may also be connected between the two side plates 3311. The two ends of the connecting plate 3314 along the third direction D3 are integrally connected to one end of each of the two side plates 3311 along the second direction D2. The mounting base 332 covers the outer periphery of the connecting plate 3314 and the connection position between the connecting plate 3314 and the side plates 3311. In this embodiment, the two side plates 3311 and the connecting plate 3314 form a U-shape.

[0105] Please refer to Figure 4. The contact bracket 331 also includes a fixing plate 3312. The two ends of the fixing plate 3312 along the third direction D3 are respectively connected to the ends of the two side plates 3311 away from the connecting plate 3314. The movable contact assembly 30a and the first elastic member 32 are located in the space enclosed by the fixing plate 3312, the two side plates 3311 and the mounting base 332.

[0106] In one embodiment, the fixing plate 3312 has protrusions 3312a at both ends along the third direction D3, and each side plate 3311 has mounting holes 3313 that penetrate the inner side surface 3311a and the outer side surface 3311b, with the two protrusions 3312a respectively confined within the two mounting holes 3313.

[0107] As shown in Figures 4 to 6, the moving component 30 also includes an upper magnet 34a (shown in Figure 5), which is fixedly connected to the side surface of the fixing plate 3312 facing the mounting base 332, for example by riveting, but not limited thereto.

[0108] The movable contact assembly 30a also includes a lower magnetic conductor 35a, which is fixedly connected to the side of the movable contact 31 facing away from the stationary contact 22. When both ends of the movable contact 31 contact the pair of stationary contacts 22, the lower magnetic conductor 35a, which moves together with the movable contact 31, approaches or contacts the upper magnetic conductor 34a, thereby forming a magnetic circuit around the movable contact 31 between the upper magnetic conductor 34a and the lower magnetic conductor 35a. When a short-circuit current passes through the movable contact 31, an attractive force is generated between the upper magnetic conductor 34a and the lower magnetic conductor 35a along the contact pressure direction. This attractive force can resist the electrodynamic repulsive force generated between the movable contact 31 and the stationary contact 22 due to the short-circuit current, ensuring that the movable contact 31 and the stationary contact 22 do not spring apart, thus providing short-circuit protection.

[0109] The upper magnetic conductor 34a may include one or more first magnetic conductors 34, and the lower magnetic conductor 35a may include one or more second magnetic conductors 35. The number of first magnetic conductors 34 and second magnetic conductors 35 may be the same or different.

[0110] For example, in one embodiment of this disclosure, there are two first magnetic conductors 34 and two second magnetic conductors 35; in another embodiment, there may be one first magnetic conductor 34 and multiple second magnetic conductors 35, and each second magnetic conductor 35 can form a magnetic circuit with the first magnetic conductor 34.

[0111] It is understandable that the first magnetic conductor 34 and the second magnetic conductor 35 can both be in the shape of a line, a U, an L, or an E. The first magnetic conductor 34 and the second magnetic conductor 35 can be made of magnetic materials such as iron, cobalt, nickel, and their alloys.

[0112] In another embodiment, the first magnetic conductor 34 can also be fixedly disposed relative to the insulating cover 21, for example, the first magnetic conductor 34 is connected to the insulating cover 21, or connected to the yoke plate through a fixed bracket. In this way, the short-circuit resistance force is transferred to the stationary component, so that excessive coil holding force is not required, thereby reducing the power consumption of the relay coil and the size of the relay, and improving the short-circuit resistance.

[0113] In another embodiment, the distance between the first magnetic conductor 34 and the second magnetic conductor 35 can be designed to be variable. Specifically, the distance between the first magnetic conductor 34 and the second magnetic conductor 35 can be adjusted according to the magnitude of the current, thereby changing the magnitude of the attraction force generated between the first magnetic conductor 34 and the second magnetic conductor 35, which can meet the requirements of short circuit resistance and overload interruption.

[0114] As shown in Figures 4 to 6, the relay of this embodiment further includes a first anti-rotation component 610 and a second anti-rotation component 620, which are respectively disposed on both sides of the moving component 30 along the third direction D3. The first anti-rotation component 610 includes at least one pair of first magnets 611, one of which is connected to the moving component 30, and the other is fixedly disposed relative to the insulating cover 21, forming a first magnetic force between the two pairs of first magnets 611; the second anti-rotation component 620 includes at least one pair of second magnets 621, one of which is connected to the moving component 30, and the other is fixedly disposed relative to the insulating cover 21, forming a second magnetic force between the two pairs of second magnets 621. The first and second magnetic forces are used to restrict the moving component 30 from rotating about the axis of the moving component 30.

[0115] It should be noted that the fixed installation of the other first magnet 611 in each pair relative to the insulating cover 21 includes various embodiments. For example, the first magnet 611 is fixedly connected to the inner wall surface of one of the second sidewalls 2142; or, the first magnet 611 is fixedly connected to the outer wall surface of the second sidewall 2142; or, the first magnet 611 is fixedly connected to a bracket, which can be fixedly connected to the insulating cover 21 or to the yoke plate 25. The bracket can be located inside or outside the insulating cover 21.

[0116] Similarly, the second magnet 621 in each pair is fixed relative to the insulating cover 21 in various embodiments. For example, the second magnet 621 is fixedly connected to the inner wall surface of another second side wall 2142; or, the second magnet 621 is fixedly connected to the outer wall surface of the second side wall 2142; or, the second magnet 621 is fixedly connected to a bracket, which can be fixedly connected to the insulating cover 21 or to the yoke plate 25. The bracket can be located inside or outside the insulating cover 21.

[0117] When the first magnet 611 and the second magnet 621 are connected to the bracket, the first magnet 611 and the second magnet 621 can be connected to the same bracket or to two different brackets respectively.

[0118] It should also be noted that the first and second magnetic forces can both be repulsive or both be attractive. When the first and second magnetic forces are repulsive, the poles of the two magnets facing each other have the same polarity; when the first and second magnetic forces are attractive, the poles of the two magnets facing each other have opposite polarities.

[0119] As an example, when the first magnetic force and the second magnetic force are repulsive forces, the other first magnet 611 and the other second magnet 621 in each pair are respectively connected to the inner wall surfaces of the two second sidewalls 2142. In this way, under the action of the repulsive force, the first magnet 611 and the second magnet 621 can fit more tightly with the inner wall surfaces of the corresponding second sidewalls 2142.

[0120] As another example, when the first magnetic force and the second magnetic force are attractive forces, the other first magnet 611 and the other second magnet 621 in each pair are respectively connected to the outer wall surface of the two second sidewalls 2142. In this way, under the action of the attractive force, the first magnet 611 and the second magnet 621 can fit more tightly with the outer wall surface of the corresponding second sidewall 2142.

[0121] The following explanation will be based on the example of one of the first magnets 611 and the other of the second magnets 621 in each pair being connected to the inner wall surfaces of the two second sidewalls 2142, and the first and second magnetic forces being repulsive forces, but this is not a limitation.

[0122] As shown in Figures 4 to 6, pairs of first magnets 611 are respectively connected to the first side 30b of the moving assembly 30 and the inner wall surface of one of the second sidewalls 2142, and the magnetic poles of the two first magnets 611 in each pair have the same polarity. Similarly, pairs of second magnets 621 are respectively connected to the second side 30c of the moving assembly 30 and the inner wall surface of the other second sidewall 2142, and the magnetic poles of the two second magnets 621 in each pair have the same polarity.

[0123] In the relay of this embodiment, the two first magnets 611 in the first anti-rotation component 610 have the same polarity facing each other, thus generating a repulsive force between the two first magnets 611. Similarly, the two second magnets 621 in the second anti-rotation component 620 have the same polarity facing each other, also generating a repulsive force between the two second magnets 621. Both the first side 30b and the second side 30c of the moving component 30 are subjected to this repulsive force, effectively suspending the moving component 30 between the two second sidewalls 2142. When the moving component 30 deflects towards a certain second sidewall 2142, the distance between the two magnets decreases, increasing the repulsive force. This repulsive force prevents the moving component 30 from continuing to rotate towards that second sidewall 2142, thus avoiding contact between the moving component 30 and the second sidewall 2142 and preventing noise.

[0124] Therefore, the relay of this embodiment, by providing the first anti-rotation component 610 and the second anti-rotation component 620, can restrict the rotation of the moving component 30 around its axis, reducing the probability of metal particles and / or ceramic powder being generated by contact friction between the moving component 30 and the second sidewall 2142 and falling onto the contact surface of the contacts. This reduces the probability of increased contact resistance or even non-conduction, ensuring the reliability of the relay operation. Simultaneously, the first anti-rotation component 610 and the second anti-rotation component 620 can also reduce the rotation amplitude of the moving component 30, thereby ensuring the consistency of the contact positions of the moving and stationary contacts and improving the stability of the contact resistance.

[0125] The orthographic projections of the two pairs of first magnets 611 on a target plane overlap, and the orthographic projections of the two pairs of second magnets 621 on the target plane overlap, wherein the target plane is perpendicular to the third direction D3. When the relay coil is energized or de-energized, the orthographic projections of the two pairs of first magnets 611 on the target plane overlap, and the orthographic projections of the two pairs of second magnets 621 on the target plane overlap. That is to say, throughout the entire movement of the moving component 30, the orthographic projections of the two pairs of first magnets 611 on the target plane overlap, and the orthographic projections of the two pairs of second magnets 621 on the target plane overlap. Thus, the moving component 30 is subjected to magnetic force throughout its movement, thereby providing anti-rotation functionality throughout the entire movement of the moving component 30.

[0126] As an example, the two first magnets 611 in a pair have different orthographic projection areas on the target plane. For instance, the first magnet 611 connected to the insulating cover 21 has a larger orthographic projection area, while the first magnet 611 connected to the moving assembly 30 has a smaller orthographic projection area. Furthermore, throughout the entire movement of the moving assembly 30, the orthographic projection of the first magnet 611 connected to the moving assembly 30 is always located within the orthographic projection of the first magnet 611 connected to the insulating cover 21.

[0127] Similarly, the areas of the orthographic projections of the two paired second magnets 621 on the target plane are different. For example, the orthographic projection area of ​​the second magnet 621 connected to the insulating cover 21 is larger, while the orthographic projection area of ​​the second magnet 621 connected to the moving component 30 is smaller. Furthermore, throughout the entire movement of the moving component 30, the orthographic projection of the second magnet 621 connected to the moving component 30 is always located within the orthographic projection of the second magnet 621 connected to the insulating cover 21.

[0128] Of course, the sizes of the two pairs of first magnets 611 and the two pairs of second magnets 621 can also be reversed, that is, the projected area of ​​the first magnet 611 connected to the insulating cover 21 is smaller, the projected area of ​​the first magnet 611 connected to the moving component 30 is larger, the projected area of ​​the second magnet 621 connected to the insulating cover 21 is smaller, and the projected area of ​​the second magnet 621 connected to the moving component 30 is larger.

[0129] As shown in Figure 4, the first anti-rotation component 610 and the second anti-rotation component 620 are symmetrically arranged about the axis of the moving component 30. The first anti-rotation component 610 has a pair of first magnets 611, and the second anti-rotation component 620 has a pair of second magnets 621 for illustration. The pair of first magnets 611 and the pair of second magnets 621 are symmetrically arranged about the axis of the moving component 30. This allows the four magnets to be designed to have the same size. When installing the four magnets, it is only necessary to consider that the magnetic forces between the pair of first magnets 611 and between the pair of second magnets 621 are either repulsive or attractive, without needing to consider the size of the four magnets. On the one hand, having multiple magnets of the same shape and size improves the versatility of the magnets; on the other hand, it also facilitates installation and improves installation efficiency.

[0130] As an example, the two first magnets 611 in each pair are arranged at intervals along the third direction D3; and / or, the two second magnets 621 in each pair are arranged at intervals along the third direction D3.

[0131] In this embodiment of the present disclosure, the paired magnets are arranged with a gap between them, meaning that the two magnets have a gap and do not come into direct contact. When the moving assembly 30 rotates about the axis of the push rod, the two magnets generate a repulsive force but do not come into direct contact. In this way, the two magnets can both prevent rotation and avoid frictional noise caused by direct contact between the two magnets.

[0132] As shown in Figures 4 to 6, in the first anti-rotation component 610, one of the two paired first magnets 611 is connected to the first side 30b of the moving component 30, and the other first magnet 611 is connected to the inner wall surface of one of the second sidewalls 2142. In the second anti-rotation component 620, one of the two paired second magnets 621 is connected to the second side 30c of the moving component 30, and the other second magnet 621 is connected to the inner wall surface of both second sidewalls 2142.

[0133] In this embodiment of the present disclosure, one of the two magnets is disposed on the contact support 331 and the other is disposed on the second side wall 2142 of the insulating cover 21. The repulsive force generated between the two magnets can prevent the contact support 331 from deflecting during the movement of the moving component 30, thereby preventing the moving contact 31 from deflecting to a certain extent.

[0134] In one embodiment, the two side plates 3311 of the contact support 331 are respectively the first side 30b and the second side 30c of the moving assembly 30, and are respectively connected to the first magnet 611 and the second magnet 621. Since the side plate 3311 is a flat plate structure, the first magnet 611 and the second magnet 621 can also be designed as flat plates and attached to the surface of the side plate 3311, so that the surface area of ​​the magnets is larger, thereby increasing the repulsive force between the two paired magnets and improving the anti-deflection capability.

[0135] It is understood that this disclosure does not particularly limit which side of the side plate 3311 of the contact support 331 is where the magnet is disposed. For example, each side plate 3311 has an inner side 3311a facing the movable contact assembly 30a and an outer side 3311b disposed opposite to the inner side 3311a along the thickness direction of the side plate 3311. In one embodiment, the outer side 3311b of the two side plates 3311 are respectively connected to a first magnet 611 and a second magnet 621; in another embodiment, the inner side 3311a of the two side plates 3311 are respectively connected to a first magnet 611 and a second magnet 621; in yet another embodiment, the inner side 3311a of one side plate 3311 is connected to a first magnet 611, and the outer side 3311b of the other side plate 3311 is connected to a second magnet 621.

[0136] In one embodiment, the first magnet 611 and the second magnet 621 are both permanent magnets and can be bonded to the side plate 3311.

[0137] Of course, it is understandable that the magnet connected to the moving component 30 may not be mounted on the side plate 3311 of the contact bracket 331. In other embodiments, the magnet connected to the moving component 30 may also be connected to both sides of the mounting base 332 along the third direction D3, or to both sides of the fixing plate 3312 along the third direction D3, or to both sides of the upper magnetic conductor 34a along the third direction D3. Wherein, when the magnet connected to the moving component 30 is connected to both sides of the upper magnetic conductor 34a along the third direction D3, if the upper magnetic conductor 34a has only one first magnetic conductor 34, then the magnet connected to the moving component 30 can be directly connected to both sides of the first magnetic conductor 34 along the third direction D3; if the upper magnetic conductor 34a includes multiple first magnetic conductors 34 arranged side by side along the third direction D3, then the magnet connected to the moving component 30 is connected to the outermost of the two outermost first magnetic conductors 34 among the multiple first magnetic conductors 34.

[0138] As shown in Figures 7 to 9, the similarities between the second embodiment and the first embodiment of this disclosure will not be repeated here. The difference is that the magnet is connected to the movable contact component 30a.

[0139] Specifically, the movable contact assembly 30a has two sides 30d facing the two second sidewalls 2142 respectively, one side 30d is connected to at least one first magnet 611, and the other side 30d is connected to at least one second magnet 621.

[0140] In this embodiment of the present disclosure, the two sides 30d of the movable contact component 30a are respectively connected to a first magnet 611 and a second magnet 621. The first anti-rotation component 610 and the second anti-rotation component 620 can prevent the movable contact component 30a from deflecting, thereby ensuring the consistency of the contact position between the movable contact component 30a and the stationary contact 22 and improving the stability of the contact resistance.

[0141] As an example, the movable contact 31 is connected to a first magnet 611 and a second magnet 621 at both ends along the first direction D1, and the first magnet 611 and the second magnet 621 are located outside the contact support 331. The two sides of the movable contact 31 along the third direction D3 are the two sides 30d of the movable contact assembly 30a.

[0142] In this embodiment of the present disclosure, the first anti-rotation component 610 includes two pairs of first magnets 611, one of which is connected to one end of the movable contact piece 31 and the other is connected to the inner wall surface of one of the second sidewalls 2142; in the other pair of first magnets 611, one is connected to the other end of the movable contact piece 31 and the other is connected to the inner wall surface of one of the second sidewalls 2142.

[0143] The second anti-rotation component 620 includes two pairs of second magnets 621, one of which is connected to one end of the movable contact piece 31 and the other is connected to the inner wall surface of another second sidewall 2142; in the other pair, one of the second magnets 621 is connected to the other end of the movable contact piece 31 and the other is connected to the inner wall surface of another second sidewall 2142.

[0144] In the third direction D3, the first magnet 611 and the second magnet 621 at one end of the movable contact 31 are arranged at intervals, and the first magnet 611 and the second magnet 621 at the other end of the movable contact 31 are arranged at intervals.

[0145] Of course, in other embodiments, the first magnet 611 and the second magnet 621 may also be connected to the second magnetic conductor 35.

[0146] Furthermore, it is worth mentioning that the magnet can also be connected to the lower conductor magnet 35a.

[0147] For example, the two outer sides of the lower magnetic conductor 35a along the third direction D3 are respectively the two sides 30d of the movable contact assembly 30a. The two outer sides of the lower magnetic conductor 35a are respectively connected to the first magnet 611 and the second magnet 621.

[0148] It should be noted that if the lower magnetic conductor 35a has only one second magnetic conductor 35, then the first magnet 611 and the second magnet 621 can be directly connected to the two sides of the second magnetic conductor 35 along the third direction D3; if the lower magnetic conductor 35a includes multiple second magnetic conductors 35 arranged side by side along the third direction D3, then the first magnet 611 and the second magnet 621 are connected to the outermost two of the outermost second magnetic conductors 35 of the multiple second magnetic conductors 35 respectively.

[0149] As shown in Figures 10 to 12, the similarities between the third embodiment of this disclosure and the above embodiments will not be repeated, but the differences are as follows:

[0150] Both the movable contact component 30a and the contact support 331 are connected to magnets. The way the magnet is set in the contact support 331 can be referred to the moving component 30 of the first embodiment of this disclosure, and the way the magnet is set in the movable contact component 30a can be referred to the moving component 30 of the second embodiment of this disclosure, which will not be described again here.

[0151] In one embodiment, the first magnet 611 located on one side of the movable contact 31 is symmetrically arranged with the first magnet 611 on one side plate 3311; the second magnet 621 located on the other side of the movable contact 31 is symmetrically arranged with the second magnet 621 on the other side plate 3311.

[0152] In this embodiment of the present disclosure, the first anti-rotation component 610 includes two pairs of first magnets 611, wherein one of the first magnets 611 is connected to one end of the movable contact piece 31, and the other first magnet 611 is connected to the inner wall surface of one of the second sidewalls 2142; in the other pair of first magnets 611, one is connected to the other end of the movable contact piece 31, and the other first magnet 611 is connected to the inner wall surface of one of the second sidewalls 2142. The second anti-rotation component 620 includes two second magnets 621, wherein one of the second magnets 621 is connected to one end of the movable contact piece 31, and the other second magnet 621 is connected to the inner wall surface of another second sidewall 2142; in the other pair of second magnets 621, one is connected to the other end of the movable contact piece 31, and the other second magnet 621 is connected to the inner wall surface of another second sidewall 2142. In the third direction D3, the first magnets 611 and second magnets 621 at one end of the movable contact piece 31 are arranged at intervals, and the first magnets 611 and second magnets 621 at the other end of the movable contact piece 31 are also arranged at intervals.

[0153] The two first magnets 611 connected to the movable contact 31 are symmetrically arranged with the first magnet 611 on one of the side plates 3311, and the two second magnets 621 connected to the movable contact 31 are symmetrically arranged with the second magnet 621 on the other side plate 3311.

[0154] As shown in Figure 13, the similarities between the fourth embodiment and the first embodiment of this disclosure will not be repeated here, but the differences are as follows:

[0155] The contact bracket 331 includes two side plates 3311, a fixing plate 3312, and a connecting plate 3314. The two ends of the connecting plate 3314 along the third direction D3 are integrally connected to the ends of the two side plates 3311 away from the mounting base 332, and the two side plates 3311 and the connecting plate 3314 form an inverted U-shape. The two side plates 3311 are respectively connected to a first magnet 611 and a second magnet 621.

[0156] The fixing plate 3312 is connected to the mounting base 332. For example, the push rod 333, the fixing plate 3312, and the mounting base 332 are integrally molded by injection molding. The fixing plate 3312 extends from both ends of the mounting base 332 along the third direction D3, so that the two ends of the fixing plate 3312 are respectively connected to the ends of the two side plates 3311 away from the connecting plate 3314.

[0157] In one embodiment, the fixing plate 3312 has protrusions 3312a at both ends along the third direction D3, and each side plate 3311 has mounting holes 3313 that penetrate the inner side surface 3311a and the outer side surface 3311b, with the two protrusions 3312a respectively confined within the two mounting holes 3313.

[0158] In summary, the relays of the present disclosure embodiments have at least the following advantages and beneficial effects:

[0159] The relay of this embodiment, by providing a first anti-rotation component 610 and a second anti-rotation component 620, can restrict the rotation of the moving component 30 around its axis, avoiding the problem of metal particles and / or ceramic powder being generated due to contact friction between the moving component 30 and the insulating cover 21, which fall onto the contact surface of the contacts, leading to increased contact resistance or even non-conduction, thus ensuring the reliability of the relay operation. Simultaneously, the first anti-rotation component 610 and the second anti-rotation component 620 can also reduce the rotation amplitude of the moving component 30, thereby ensuring the consistency of the contact positions of the moving and stationary contacts and improving the stability of the contact resistance.

[0160] It is understood that the various embodiments / implementations provided in this disclosure can be combined with each other without creating contradictions, and will not be described in detail here.

[0161] 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.

[0162] 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.

[0163] 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.

[0164] 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 contacts; A moving component for contacting or separating from a pair of stationary contacts; An insulating cover, wherein a pair of the stationary contacts are connected to the insulating cover; The first anti-rotation component includes at least one pair of first magnets, one of the first magnets in each pair is connected to the moving component, and the other first magnet is fixedly disposed relative to the insulating cover, and a first magnetic force is formed between the two first magnets in the pair. as well as The second anti-rotation component includes at least one pair of second magnets, one of the second magnets in each pair is connected to the moving component, and the other second magnet is fixed relative to the insulating cover, and a second magnetic force is formed between the two pairs of second magnets; the first magnetic force and the second magnetic force are used to restrict the moving component from rotating about the axis of the moving component.

2. The relay according to claim 1, characterized in that, Both the first magnetic force and the second magnetic force are repulsive or attractive forces.

3. The relay according to claim 2, characterized in that, When both the first magnetic force and the second magnetic force are repulsive forces, the other first magnet in each pair is fixedly connected to the inner wall surface of the insulating cover, and the other second magnet in each pair is fixedly connected to the inner wall surface of the insulating cover.

4. The relay according to claim 2, characterized in that, When both the first magnetic force and the second magnetic force are attractive forces, the other first magnet in each pair is fixedly connected to the outer wall surface of the insulating cover, and the other second magnet in each pair is fixedly connected to the outer wall surface of the insulating cover.

5. The relay according to claim 1, characterized in that, The first anti-rotation component and the second anti-rotation component are respectively located on both sides of the moving component along a third direction; The arrangement direction of a pair of stationary contacts is defined as the first direction, and the movement direction of the moving component is defined as the second direction. The first direction, the second direction, and the third direction are all perpendicular to each other.

6. The relay according to claim 1, characterized in that, The orthographic projections of the two first magnets in a pair on the target plane overlap with each other; the orthographic projections of the two second magnets in a pair on the target plane overlap with each other. The target plane is parallel to the direction of motion of the moving component.

7. The relay according to claim 6, characterized in that, The arrangement direction of a pair of stationary contacts is defined as a first direction, the movement direction of the moving component is defined as a second direction, and a third direction is defined, wherein the first direction, the second direction, and the third direction are mutually perpendicular; The target plane is perpendicular to the third direction.

8. The relay according to claim 6, characterized in that, When the coil of the relay is de-energized or energized, the orthographic projections of the two first magnets in a pair on the target plane overlap with each other, and the orthographic projections of the two second magnets in a pair on the target plane overlap with each other.

9. The relay according to claim 1, characterized in that, The first anti-rotation component and the second anti-rotation component are arranged symmetrically about the axis of the moving component.

10. The relay according to claim 1, characterized in that, The two first magnets in each pair are arranged at intervals; and / or, the two second magnets in each pair are arranged at intervals.

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

12. The relay according to any one of claims 1-11, characterized in that, The moving component includes a contact support; The first magnet of the first anti-rotation component is connected to the contact bracket, and the second magnet of the second anti-rotation component is connected to the contact bracket.

13. The relay according to claim 12, characterized in that, The contact support includes two spaced-apart side plates, which are respectively connected to the first magnet and the second magnet.

14. The relay according to claim 13, characterized in that, The side plate has an inner side surface and an outer side surface disposed opposite to the inner side surface along the thickness direction of the side plate; The first magnet is connected to the inner or outer side of one of the side plates, and the second magnet is connected to the inner or outer side of the other side plate.

15. The relay according to any one of claims 1-11, characterized in that, The moving component includes a movable contact component for contacting or separating from the pair of stationary contacts; The movable contact assembly has two back-to-back sides, one of which is connected to at least one first magnet and the other of which is connected to at least one second magnet.

16. The relay according to claim 15, characterized in that, The moving component also includes a contact support, and the movable contact component passes through the space enclosed by the contact support and includes a moving contact piece for contacting or separating from a pair of stationary contacts. Both ends of the moving contact are connected to the first magnet and the second magnet, which are located outside the contact support.

17. The relay according to claim 15, characterized in that, The movable contact assembly includes a movable contact piece and a lower magnetic conductor. The movable contact piece is used to contact or separate from a pair of stationary contacts, and the lower magnetic conductor is fixedly connected to the side of the movable contact piece facing away from the stationary contacts. The relay also includes an upper magnetic conductor located on the side of the moving contact facing the stationary contact, and the upper magnetic conductor and the lower magnetic conductor are used to form a magnetic circuit; The two outer sides of the lower magnetic conductor are the two sides, and the first magnet and the second magnet are respectively connected to them.

18. The relay according to any one of claims 1-11, characterized in that, The moving component includes a movable contact component and a contact support. The movable contact component passes through the space enclosed by the contact support and is used to contact or separate from a pair of stationary contacts. The contact support includes two spaced-apart side plates, and the movable contact component has two oppositely arranged sides. The first anti-rotation component includes at least two pairs of first magnets, wherein at least one first magnet is connected to one of the side plates, and at least one first magnet is connected to one of the side edges; The second anti-rotation component includes at least two pairs of second magnets, with at least one second magnet connected to another side plate and at least one second magnet connected to another side.

19. The relay according to claim 18, characterized in that, The side plate has an inner side facing the movable contact assembly and an outer side opposite to the inner side along the thickness direction of the side plate. The first magnet is connected to the inner or outer side of one of the side plates, and the second magnet is connected to the inner or outer side of the other side plate.

20. The relay according to claim 18, characterized in that, The movable contact assembly includes a movable contact piece for contacting or separating from the pair of stationary contacts; Both ends of the moving contact are connected to the first magnet and the second magnet, which are located outside the contact support.

21. The relay according to claim 20, characterized in that, The first magnet located on one side of the movable contact piece is symmetrically arranged with respect to the first magnet on one of the side plates; The second magnet located on the other side of the moving contact piece is symmetrically arranged with the second magnet on the other side plate.

22. The relay according to any one of claims 1-11, characterized in that, The insulating cover includes: The top wall is connected to a pair of the aforementioned stationary contacts; and A cylindrical sidewall is connected to the outer periphery of the top wall.

23. The relay according to claim 22, characterized in that, The cylindrical sidewall also includes two first sidewalls and two second sidewalls. The two first sidewalls are arranged opposite each other along a first direction, and the two second sidewalls are arranged opposite each other along a third direction. The two first sidewalls and the two second sidewalls are connected end to end to form a ring structure. The arrangement direction of a pair of stationary contacts is defined as the first direction, and the movement direction of the moving component is defined as the second direction. The first direction, the second direction, and the third direction are all perpendicular to each other.

24. The relay according to claim 1, characterized in that, The moving component includes a movable contact component, a push rod, a mounting base, and a contact bracket. The mounting base is connected to one axial end of the push rod, and the contact bracket is connected to the mounting base. The movable contact component passes through the space enclosed by the contact bracket and is used to contact or separate from a pair of stationary contacts. The moving component further includes a first elastic element located between the mounting base and the movable contact component, for providing an elastic force to the movable contact component to move toward the stationary contact.

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