Relay

Abstract

The present disclosure provides a relay, comprising a contact portion and an arc-extinguishing assembly. The contact portion comprises a plurality of contact assemblies, wherein the contact assemblies comprise two stationary contacts arranged in a first direction and a moving contact member. A direction of motion of the moving contact member is a second direction, and the plurality of contact assemblies are arranged in a third direction. The arc-extinguishing assembly comprises four first permanent magnets, wherein the four first permanent magnets are respectively located on two sides of the contact portion in the third direction, and respectively correspond to positions of four outermost stationary contacts of the contact portion in the third direction; in the third direction, opposing surfaces of two corresponding first permanent magnets have opposite polarities, and two first permanent magnets located on a same side of the contact portion have opposite polarities on surfaces facing the respective corresponding stationary contacts.

Description

relay

[0001] This disclosure claims priority to Chinese patent application No. 202423168415.8, filed on December 20, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of electrical 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 relay includes a moving contact and two stationary contacts. The moving contact is used to make contact with or separate from the stationary contacts to achieve the opening and closing of the relay. In related technologies, to ensure timely disconnection between the moving contact and the stationary contacts, an arc-extinguishing assembly is usually arranged around the moving contact and the stationary contacts. However, when the relay switches from connecting positive current to connecting negative current, and vice versa, there will always be two arc-extinguishing directions facing each other during one of the switching processes. This is not conducive to arc extinguishing, and thus leads to untimely disconnection between the moving contact and the stationary contacts. Summary of the Invention

[0005] This disclosure provides a relay to solve the problem in the related art where the two arc-extinguishing directions are set facing each other due to the current switching direction, which is not conducive to arc extinguishing.

[0006] The relay of this disclosure embodiment includes:

[0007] The contact portion includes multiple contact components, each contact component including two stationary contacts and a movable contact piece for contacting or separating from the stationary contacts. The arrangement direction of the two stationary contacts of the contact component is defined as a first direction, and the movement direction of the movable contact piece is defined as a second direction. The first direction is perpendicular to the second direction, and a direction perpendicular to both the first and second directions is defined as a third direction. The multiple contact components are arranged along the third direction.

[0008] The arc blowing assembly includes four first permanent magnets, which are respectively located on both sides of the contact portion along the third direction and correspond to the positions of the four outermost stationary contacts of the contact portion in the third direction. Along the third direction, the magnetic poles of the surfaces of two corresponding first permanent magnets facing each other are opposite, and the magnetic poles of two first permanent magnets on the same side of the contact portion facing their respective stationary contacts are opposite.

[0009] According to some embodiments of this disclosure, the relay further includes an insulating cover, the stationary contact is mounted on the insulating cover, and the moving contact is movably disposed inside the insulating cover;

[0010] The first permanent magnet is arranged on the outer wall surface of the insulating cover.

[0011] According to some embodiments of this disclosure, the arc blowing assembly further includes a yoke clamp arranged on the outer periphery of the insulating cover, and the first permanent magnet is mounted on the side surface of the yoke clamp facing the insulating cover.

[0012] According to some embodiments of this disclosure, the yoke clamp includes two U-shaped clamps symmetrically arranged along the first direction, and the openings of the two U-shaped clamps face each other.

[0013] According to some embodiments of the present disclosure, the U-shaped clip includes two first portions and a second portion connected between the two first portions, the two first portions being disposed opposite to each other along the third direction;

[0014] The first permanent magnet is provided on the surface of the first portion of the two U-shaped clips facing the insulating cover.

[0015] According to some embodiments of this disclosure, the insulating cover is further provided with an isolation seat, the isolation seat having an isolation structure, and the isolation structure is provided between adjacent contact components;

[0016] The arc blowing assembly further includes at least one pair of second permanent magnets. A second permanent magnet is provided between adjacent stationary contacts in adjacent contact assemblies, and in the third direction, the magnetic poles of the surfaces of adjacent permanent magnets facing each other are opposite. The second permanent magnet is installed in the isolation structure.

[0017] According to some embodiments of this disclosure, the isolation structure has two isolation walls spaced apart along the third direction, and the second permanent magnet is disposed between the two isolation walls.

[0018] According to some embodiments of this disclosure, the isolation wall has two sub-walls arranged at intervals along the first direction;

[0019] A second permanent magnet is provided between adjacent sub-walls of the two isolation walls.

[0020] According to some embodiments of this disclosure, the insulating cover is further provided with a plurality of arc-extinguishing components, which are mounted on the isolation seat and are respectively located around the plurality of contact components.

[0021] According to some embodiments of this disclosure, the isolating seat also has multiple pairs of mounting portions, with two of the pairs of mounting portions located on opposite sides of the two stationary contacts of the contact assembly;

[0022] The arc extinguishing assembly includes two arc extinguishing units, which are respectively installed in the two pairs of mounting parts.

[0023] According to some embodiments of this disclosure, the mounting part is connected to the isolation structure.

[0024] According to some embodiments of this disclosure, the mounting part and the isolation structure are an integral structure.

[0025] According to some embodiments of this disclosure, the mounting part has a mounting groove, and the arc extinguishing unit is located within the mounting groove.

[0026] According to some embodiments of this disclosure, the arc-extinguishing unit includes a plurality of arc-extinguishing grids stacked along the second direction.

[0027] According to some embodiments of this disclosure, the arc blowing assembly further includes at least one pair of second permanent magnets, with a second permanent magnet disposed between adjacent stationary contacts in adjacent contact assemblies, and in the third direction, the magnetic poles of the surfaces of adjacent permanent magnets facing each other are opposite.

[0028] The second permanent magnet is disposed inside the insulating cover.

[0029] According to some embodiments of this disclosure, the arc blowing assembly further includes at least one pair of second permanent magnets, with one second permanent magnet disposed between adjacent stationary contacts in adjacent contact assemblies, and in the third direction, the magnetic poles of the surfaces of adjacent permanent magnets facing each other are opposite.

[0030] According to some embodiments of this disclosure, the arc blowing assembly further includes at least one pair of magnetic conductors, with one magnetic conductor disposed between adjacent stationary contacts in adjacent contact assemblies, the magnetic conductor being made of a magnetically conductive material.

[0031] One embodiment disclosed above has at least the following advantages or beneficial effects:

[0032] The relay of this embodiment, through the arrangement of the magnetic poles of four first permanent magnets and at least one pair of second permanent magnets, ensures that the arc-blowing direction of the paired stationary contacts is in the same direction regardless of whether the relay is connected to a positive or negative current. This achieves arc breaking of the stationary contacts, ensuring timely disconnection between the moving contact and the stationary contact, and preventing the Ampere forces of the paired stationary contacts from facing each other in a certain switching state due to changes in the relay current direction. Furthermore, the inclusion of second permanent magnets increases the strength of the magnetic field lines, thereby enhancing the arc-blowing effect. Attached Figure Description

[0033] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0034] Figure 1 shows an exploded view of a relay according to an embodiment of the present disclosure.

[0035] Figures 2 and 3 show schematic diagrams of the arcing direction when the relay is connected to positive and negative currents.

[0036] Figure 4 shows a schematic diagram of the assembled insulating cover, isolating seat, and arc extinguishing assembly.

[0037] Figure 5 shows a schematic diagram of the second permanent magnet assembled with the isolator.

[0038] The reference numerals in the attached drawings are explained as follows: 100. Housing; 110. Insulating cover; 111. Ceramic cover; 1111. Top wall; 1112. Side wall; 112. Frame plate; 120. Yoke plate; 130. Metal cover; 200. Contact part; 200a. Contact assembly; 210. Stationary contact; 220. Moving contact plate; 300. Arc blowing assembly; 310. First permanent magnet; 320. Second permanent magnet; 330. Yoke clamp; 340. U-shaped clamp; 341. Part 1; 342. Part 2; 350. Magnetic conductor; 400. Isolator; 410. Base; 420. Isolation structure; 421. Isolation wall; 4211. Sub-wall; 430. Mounting part; 431. Mounting slot; 500. Arc extinguishing assembly; 510. Arc extinguishing unit; 511. Arc extinguishing grid; 600. Push rod component; 700. Coil assembly; D1. First direction; D2. Second direction; D3. Third direction. Detailed Implementation

[0039] 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.

[0040] 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.

[0041] As shown in Figure 1, the relay of this embodiment includes a housing 100, a contact portion 200, a push rod member 600, and a coil assembly 700. The contact portion 200 includes a plurality of contact assemblies 200a, each including two stationary contacts 210 and a movable contact piece 220 for contacting or separating from the two stationary contacts 210. The stationary contacts 210 are mounted on the housing 100, and the movable contact piece 220 is movably disposed within the housing 100. The push rod member 600 is movably disposed within the housing 100 and is used to drive the movable contact piece 220 to move. The coil assembly 700 is configured to drive the push rod member 600 to move in response to an input signal, thereby driving the movable contact piece 220 to move.

[0042] For ease of explanation, the arrangement direction of the two stationary contacts 210 of the contact assembly 200a is defined as the first direction D1, and the movement direction of the moving contact 220 is defined as the second direction D2. The first direction D1 and the second direction D2 are perpendicular, and the direction perpendicular to both the first direction D1 and the second direction D2 is defined as the third direction D3. Multiple contact assemblies 200a are arranged along the third direction D3. The number of contact assemblies 200a can be two, three, four, or other numbers. In this embodiment, the number of contact assemblies 200a is two.

[0043] Each contact component 200a has two stationary contacts 210 that can be electrically connected to the load. Each contact component 200a can control the load circuit, and thus one relay can control multiple loads at the same time, which simplifies the number of electronic components in the control circuit and is conducive to miniaturization.

[0044] In one embodiment, the housing 100 includes an insulating cover 110, a yoke plate 120, and a metal cover 130. The insulating cover 110 is connected to one surface of the yoke plate 120 in the thickness direction, and the metal cover 130 is connected to the other surface of the yoke plate 120 in the thickness direction. The coil assembly 700 is sleeved on the outer periphery of the metal cover 130.

[0045] The yoke plate 120 has a through hole that extends through the yoke plate 120 along its thickness. The insulating cover 110 and the yoke plate 120 form a first chamber, and the metal cover 130 and the yoke plate 120 form a second chamber. The first chamber communicates with the second chamber through the through hole. The stationary contact 210 is mounted on the insulating cover 110, and the moving contact 220 is located within the first chamber.

[0046] In one embodiment, the insulating cover 110 includes a ceramic cover 111 and a frame 112. The ceramic cover 111 is made of ceramic material and is connected to the yoke plate 120 via the frame 112.

[0047] The frame piece 112 can be a ring-shaped metal component, such as one made of an iron-nickel alloy. One end of the frame piece 112 is connected to the edge of the opening of the ceramic cover 111, for example, by laser welding, brazing, resistance welding, or adhesive bonding. The other end of the frame piece 112 is connected to the yoke plate 120, also by laser welding, brazing, resistance welding, or adhesive bonding. A frame piece 112 is provided between the ceramic cover 111 and the yoke plate 120 to facilitate their connection. The stationary contact 210 is mounted on the ceramic cover 111, for example, by welding.

[0048] The ceramic cover 111 may include a top wall 1111 and a side wall 1112. One end of the side wall 1112 is connected to the top wall 1111, and the other end of the side wall 1112 is connected to the yoke plate 120 through a frame 112. The stationary contact 210 is mounted on the top wall 1111.

[0049] In one embodiment, the sidewall 1112 may be a rectangular ring structure, a circular ring structure, or a ring structure of other shapes, and this disclosure does not particularly limit it.

[0050] As shown in Figure 2, the relay of this embodiment further includes an arc-blowing assembly 300, which includes four first permanent magnets 310 and at least one pair of second permanent magnets 320. The four first permanent magnets 310 are respectively located on both sides of the contact portion 200 along the third direction D3, and respectively correspond to the positions of the four outermost stationary contacts 210 of the contact portion 200 in the third direction D3; along the third direction D3, the magnetic poles of the surfaces of the corresponding two first permanent magnets 310 facing each other are opposite, and the magnetic poles of the surfaces of the two first permanent magnets 310 located on the same side of the contact portion 200 facing each other are opposite; wherein, a second permanent magnet 320 is provided between adjacent stationary contacts 210 in adjacent contact assemblies 200a, and the magnetic poles of the surfaces of adjacent permanent magnets facing each other in the third direction D3 are opposite.

[0051] For example, when there are two contact components 200a, there is one pair of second permanent magnets 320. When there are three contact components 200a, there are two pairs of second permanent magnets 320. When there are four contact components 200a, there are three pairs of second permanent magnets 320. In other words, the difference between the number of contact components 200a and the number of pairs of second permanent magnets 320 is 1.

[0052] The following explanation will take the example of two contact components 200a and one pair of second permanent magnets 320. For ease of explanation, the four stationary contacts 210 are defined as A1, A2, A3, and A4; the four first permanent magnets 310 are defined as P1, P2, P3, and P4; and the two second permanent magnets 320 are defined as P5 and P6.

[0053] As shown in Figure 2, A1 and A2 belong to one contact component 200a and are arranged opposite each other along the first direction D1. A3 and A4 belong to another contact component 200a and are arranged opposite each other along the first direction D1. At the same time, A1 and A3 are arranged opposite each other along the third direction D3, and A2 and A4 are arranged opposite each other along the third direction D3.

[0054] P1 and P2 are located on one side of the contact portion 200 along the third direction D3, and on the third direction D3, P1 corresponds to the position of A1, and P2 corresponds to the position of A2. P3 and P4 are located on the other side of the contact portion 200 along the third direction D3, and on the third direction D3, P3 corresponds to the position of A3, and P4 corresponds to the position of A4.

[0055] It should be noted that "positional correspondence" refers to the overlapping area between the orthographic projections of two objects on a target plane. For example, the positional correspondence between P1 and A1 should be understood as: the overlapping area between the orthographic projections of P1 and A1 on a target plane. Here, the target plane is perpendicular to the third direction D3.

[0056] Among them, the magnetic pole of P1 facing A1 is the N pole, the magnetic pole of P2 facing A2 is the S pole, the magnetic pole of P3 facing A3 is the S pole, and the magnetic pole of P4 facing A4 is the N pole.

[0057] P5 is located between A1 and A3, with the magnetic pole on the side of P5 facing A1 being the S pole and the magnetic pole on the side of P5 facing A3 being the N pole. P6 is located between A2 and A4, with the magnetic pole on the side of P6 facing A2 being the N pole and the magnetic pole on the side of P6 facing A4 being the S pole.

[0058] Based on the magnetic pole arrangement of the six permanent magnets P1, P2, P3, P4, P5, and P6, it can be seen that for A1 and A3, the magnetic field lines are conducted from P1 to P5 and then to P3; for A2 and A4, the magnetic field lines are conducted from P4 to P6 and then to P2. Furthermore, the current flow direction of the four stationary contacts 210 is A1 in, A2 out, and A4 in, A3 out.

[0059] Therefore, according to the left-hand rule, the Ampere force on the arc generated between the moving contact 220 and A1 is F11, the Ampere force on the arc generated between the moving contact 220 and A2 is F21, the Ampere force on the arc generated between the moving contact 220 and A3 is F31, and the Ampere force on the arc generated between the moving contact 220 and A4 is F41.

[0060] Although F21 is directed towards A1, for the pair A1 and A2, as long as one of them extinguishes the arc, the other can also extinguish the arc. Therefore, F21 will not affect the arc breaking of A1 and A2.

[0061] Similarly, although F31 is directed towards A4, for the pair A3 and A4, as long as one of them extinguishes the arc, the other can also extinguish the arc. Therefore, F31 will not affect the arc breaking of A3 and A4.

[0062] As shown in Figure 3, the magnetic pole arrangement of the six permanent magnets P1, P2, P3, P4, P5, and P6 remains unchanged, but the direction of the current connected by the relay is different from that in Figure 2. That is, the current flows through the four stationary contacts 210 in the direction of A2 into A1 and A3 into A4. According to the left-hand rule, the Ampere force on the arc generated between the moving contact 220 and A1 is F12, the Ampere force on the arc generated between the moving contact 220 and A2 is F22, the Ampere force on the arc generated between the moving contact 220 and A3 is F32, and the Ampere force on the arc generated between the moving contact 220 and A4 is F42.

[0063] Although F12 is directed towards A2, for the pair A1 and A2, as long as one of them extinguishes the arc, the other can also extinguish the arc. Therefore, F12 will not affect the arc breaking of A1 and A2.

[0064] Similarly, although F42 is oriented towards A3, for the pair A3 and A4, as long as one of them extinguishes the arc, the other can also extinguish the arc. Therefore, F42 will not affect the arc breaking of A3 and A4.

[0065] As can be seen from Figures 2 and 3, the relay of this embodiment, through the arrangement of the magnetic poles of four first permanent magnets 310 and at least one pair of second permanent magnets 320, ensures that the arc-blowing direction of the paired stationary contacts 210 is in the same direction regardless of whether the relay is connected to a positive or negative current. This achieves arc breaking of the stationary contacts 210, ensuring that the moving contact 220 of the relay disconnects from the stationary contacts 210 in a timely manner, and preventing the Ampere forces of the paired stationary contacts 210 from facing each other due to changes in the direction of the relay current. Furthermore, the inclusion of the second permanent magnets 320 increases the strength of the magnetic field lines, thereby enhancing the arc-blowing effect.

[0066] As shown in Figure 4, the first permanent magnet 310 is arranged on the outer wall surface of the insulating cover 110, and the second permanent magnet 320 is disposed inside the insulating cover 110. In this embodiment of the present disclosure, four first permanent magnets 310 are arranged on the outer wall surface of the side wall 1112 of the ceramic cover 111.

[0067] The arc blowing assembly 300 also includes a yoke clamp 330 arranged on the outer periphery of the insulating cover 110, and a first permanent magnet 310 is mounted on the side surface of the yoke clamp 330 facing the insulating cover 110.

[0068] In this embodiment of the present disclosure, by providing a yoke clamp 330 on the outer periphery of the insulating cover 110 and mounting the first permanent magnet 310 on the side surface of the yoke clamp 330 facing the insulating cover 110, the magnetic field lines of the first permanent magnet 310 can be prevented from overflowing outward, thereby increasing the magnetic field strength and ensuring the arc blowing effect.

[0069] As shown in Figures 2 to 4, the yoke clamp 330 includes two U-shaped clamps 340 arranged symmetrically along the first direction D1, and the openings of the two U-shaped clamps 340 face each other.

[0070] Of course, in other embodiments, the yoke clamp 330 may also be a single integral piece instead of two separate pieces.

[0071] The U-shaped clamp 340 includes two first parts 341 and a second part 342 connected between the two first parts 341. The two first parts 341 are arranged opposite each other along a third direction D3. A first permanent magnet 310 is provided on the side surface of the first part 341 of the two U-shaped clamps facing the insulating cover 110.

[0072] As shown in Figures 1 and 5, an isolation seat 400 is also provided inside the insulating cover 110. The isolation seat 400 has a base 410 and an isolation structure 420, which is connected to the base 410. An isolation structure 420 is provided between adjacent contact components 200a, and a second permanent magnet 320 is mounted on the isolation structure 420.

[0073] In this embodiment of the present disclosure, an isolation structure 420 is provided between adjacent contact components 200a. The isolation structure 420 can insulate and isolate adjacent contact components 200a, so as to prevent adjacent contact components 200a from affecting each other when the contact components 200a are energized.

[0074] In one embodiment, the isolation seat 400 is made of an insulating material, such as plastic or ceramic.

[0075] The isolation structure 420 has two isolation walls 421 arranged at intervals along the third direction D3, and the second permanent magnet 320 is disposed between the two isolation walls 421.

[0076] In this embodiment of the present disclosure, two isolation walls 421 are provided between adjacent contact components 200a, spaced apart along a third direction D3, with a gap between the two isolation walls 421. On the one hand, this increases the creepage distance between adjacent contact components 200a, further reducing the risk of mutual interference between adjacent contact components 200a; on the other hand, the second permanent magnet 320 can be installed in the gap between adjacent isolation walls 421.

[0077] Furthermore, the isolation wall 421 has two sub-walls 4211 arranged at intervals along the first direction D1. A second permanent magnet 320 is provided between adjacent sub-walls 4211 of the two isolation walls 421.

[0078] Please refer to Figures 1 and 5. The insulating cover 110 also contains multiple arc-extinguishing components 500, which are mounted on the isolating base 400 and located around multiple contact components 200a. By placing the arc-extinguishing components 500 around the multiple contact components 200a, the elongated arc can be extinguished in a timely manner, preventing the arc from burning the moving contact 220 and the stationary contact 210, thus extending the service life of the relay.

[0079] The isolator 400 also has multiple pairs of mounting portions 430, which are connected to the base 410. The two pairs of mounting portions 430 are located on opposite sides of the two stationary contacts 210 of the contact assembly 200a. The arc-extinguishing assembly 500 includes two arc-extinguishing units 510, each mounted on one of the pairs of mounting portions 430.

[0080] In one embodiment, the mounting portion 430 is connected to the isolation structure 420. Further, the mounting portion 430 and the isolation structure 420 are an integral structure.

[0081] The mounting part 430, the isolation structure 420 and the base 410 can be an integrated structure.

[0082] In one embodiment, the mounting part 430 has a mounting groove 431, and the arc extinguishing unit 510 is confined within the mounting groove 431.

[0083] In one embodiment, the arc extinguishing unit 510 includes multiple arc extinguishing grid plates 511 stacked along the second direction D2. The electric arc generated between the moving contact 220 and the stationary contact 210 can be transferred to the arc extinguishing unit 510 and extinguished by the cutting of the multiple arc extinguishing grid plates 511.

[0084] Please refer back to Figures 2 and 3. In another embodiment, the second permanent magnet 320 can be replaced by a magnetic conductor 350, which is made of a magnetic material.

[0085] In one embodiment, the magnetic material can be any of the following: ferromagnetic and soft magnetic materials such as iron, silicon steel, and ferrite.

[0086] In this embodiment of the present disclosure, a magnetic conductor 350 is provided between A1 and A3, and a magnetic conductor 350 is provided between A2 and A4. Taking A1 and A3 as an example, since the magnetic conductor 350 is made of a magnetic material, the magnetic conductor 350 helps to strengthen the magnetic field strength between A1 and A3, thereby improving the arc blowing effect.

[0087] In another embodiment, the arc blowing assembly 300 may not include the second permanent magnet 320 and the magnetic conductor 350, but may only include the first permanent magnet 310.

[0088] In summary, the relays of the present disclosure embodiments have at least the following advantages and beneficial effects:

[0089] The relay of this embodiment, through the arrangement of the magnetic poles of four first permanent magnets 310 and at least one pair of second permanent magnets 320, ensures that the arc-blowing direction of the paired stationary contacts 210 is in the same direction regardless of whether the relay is connected to a positive or negative current. This achieves arc breaking of the stationary contacts 210, ensuring that the moving contact 220 of the relay disconnects from the stationary contacts 210 in a timely manner, and preventing the Ampere forces of the paired stationary contacts 210 from facing each other due to changes in the direction of the relay current. Furthermore, the inclusion of the second permanent magnets 320 increases the strength of the magnetic field lines, thereby enhancing the arc-blowing effect.

[0090] 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.

[0091] In the disclosed embodiments, 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 disclosed embodiments according to the specific circumstances.

[0092] In the description of the disclosed embodiments, 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 disclosed embodiments 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 disclosed embodiments.

[0093] 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 disclosed embodiments. 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.

[0094] The above are merely preferred embodiments of the disclosed embodiments and are not intended to limit the disclosed embodiments. For those skilled in the art, the disclosed embodiments can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the disclosed embodiments should be included within the protection scope of the disclosed embodiments.

Claims

1. A relay characterized by comprising: include: The contact portion includes multiple contact components, each contact component including two stationary contacts and a movable contact piece for contacting or separating from the stationary contacts. The arrangement direction of the two stationary contacts of the contact component is defined as a first direction, and the movement direction of the movable contact piece is defined as a second direction. The first direction is perpendicular to the second direction, and a direction perpendicular to both the first direction and the second direction is defined as a third direction. The multiple contact components are arranged along the third direction. as well as The arc blowing assembly includes four first permanent magnets, which are respectively located on both sides of the contact portion along the third direction and correspond to the positions of the four outermost stationary contacts of the contact portion in the third direction. Along the third direction, the magnetic poles of the surfaces of two corresponding first permanent magnets facing each other are opposite, and the magnetic poles of two first permanent magnets on the same side of the contact portion facing their respective stationary contacts are opposite.

2. The relay according to claim 1, characterized in that The relay also includes an insulating cover, the stationary contact is mounted on the insulating cover, and the moving contact is movably disposed inside the insulating cover; The first permanent magnet is arranged on the outer wall surface of the insulating cover.

3. The relay according to claim 2, characterized in that The arc blowing assembly also includes a yoke clamp arranged on the outer periphery of the insulating cover, and the first permanent magnet is mounted on the side surface of the yoke clamp facing the insulating cover.

4. The relay according to claim 3, characterized in that The yoke clamp includes two U-shaped clamps arranged symmetrically along the first direction, and the openings of the two U-shaped clamps face each other.

5. The relay of claim 4, wherein The U-shaped clamp includes two first parts and a second part connected between the two first parts, the two first parts being arranged opposite to each other along the third direction; The first permanent magnet is provided on the surface of the first portion of the two U-shaped clips facing the insulating cover.

6. The relay of claim 2, wherein The insulating cover is also provided with an isolation seat, the isolation seat has an isolation structure, and the isolation structure is provided between adjacent contact components; The arc blowing assembly further includes at least one pair of second permanent magnets. A second permanent magnet is provided between adjacent stationary contacts in adjacent contact assemblies, and in the third direction, the magnetic poles of the surfaces of adjacent permanent magnets facing each other are opposite. The second permanent magnet is installed in the isolation structure.

7. The relay according to claim 6, characterized in that The isolation structure has two isolation walls spaced apart along the third direction, and the second permanent magnet is disposed between the two isolation walls.

8. The relay according to claim 7, characterized in that The isolation wall has two sub-walls spaced apart along the first direction; A second permanent magnet is provided between adjacent sub-walls of the two isolation walls.

9. The relay of claim 6, wherein The insulating cover is also provided with a plurality of arc-extinguishing components, which are installed on the isolation base and are respectively located around the plurality of contact components.

10. The relay of claim 9, wherein The isolating seat also has multiple pairs of mounting parts, with each pair of mounting parts located on opposite sides of the two stationary contacts of the contact assembly; The arc extinguishing assembly includes two arc extinguishing units, which are respectively installed in the two pairs of mounting parts.

11. The relay according to claim 10, characterized in that The mounting part is connected to the isolation structure.

12. The relay of claim 11, wherein, The mounting section and the isolation structure are an integral part of each other.

13. The relay of claim 10, wherein, The mounting part has a mounting groove, and the arc extinguishing unit is located within the mounting groove.

14. The relay of claim 10, wherein, The arc extinguishing unit comprises a plurality of arc extinguishing grid pieces arranged in a stack along the second direction.

15. The relay of claim 2, wherein, The arc blowing assembly further comprises at least one pair of second permanent magnets, one of the second permanent magnets being arranged between the adjacent static contacts of adjacent contact assemblies, and in the third direction, the magnetic poles of the mutually facing surfaces of the adjacent permanent magnets are opposite. The second permanent magnets are arranged in the insulating cover.

16. The relay of claim 1, wherein The arc blowing assembly further comprises at least one pair of second permanent magnets, one of the second permanent magnets being arranged between the adjacent static contacts of adjacent contact assemblies, and in the third direction, the magnetic poles of the mutually facing surfaces of the adjacent permanent magnets are opposite.

17. The relay of claim 1, wherein The arc blowing assembly further comprises at least one pair of magnetic conductors, one of the magnetic conductors being arranged between the adjacent static contacts of adjacent contact assemblies, and the magnetic conductors are made of a magnetic conductive material.

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