Relay

Abstract

The present disclosure provides a relay, comprising a contact portion and an arc blowing assembly. The contact portion comprises two contact assemblies; each contact assembly comprises 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 assembly is defined as a first direction, the movement direction of the movable contact piece is defined as a second direction, the first direction is perpendicular to the second direction, and the direction perpendicular to both the first direction and the second direction is defined as a third direction; the plurality of contact assemblies are arranged in the third direction; and the arc blowing assembly comprises four permanent magnets; the four permanent magnets are respectively located on two sides of the contact portion in the first direction, and respectively correspond to the positions of the four stationary contacts; and the magnetic poles of the surfaces of two permanent magnets corresponding to the same contact assembly that face each other are opposite, and in the third direction, the magnetic poles of the surfaces of two adjacent permanent magnets that face respective corresponding stationary contacts are opposite.

Description

relay

[0001] This disclosure claims priority to Chinese Patent Application No. 202411896789.3, 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 placed around the moving contact and the stationary contacts. However, when the relay switches from connecting positive current to connecting negative current, and vice versa, the arc-extinguishing directions will always interfere with each other during one of the switching processes. This is detrimental 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 arc-extinguishing direction interferes with each other due to the switching direction of the current, which is detrimental to arc extinguishing.

[0006] The relay of this disclosure embodiment includes:

[0007] The contact portion includes two contact components, each of which includes 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, wherein 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; a plurality of contact components are arranged along the third direction;

[0008] The arc blowing assembly includes four permanent magnets, which are respectively located on both sides of the contact portion along the first direction and correspond to the positions of the four stationary contacts.

[0009] In this configuration, the magnetic poles of the surfaces of two permanent magnets corresponding to the same contact assembly that face each other are opposite, and in the third direction, the magnetic poles of the surfaces of two adjacent permanent magnets facing their respective stationary contacts are opposite.

[0010] 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;

[0011] The permanent magnet is arranged on the outer wall surface of the insulating cover.

[0012] 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 permanent magnet is mounted on the side surface of the yoke clamp facing the insulating cover.

[0013] According to some embodiments of this disclosure, the yoke clamp includes two pairs of sub-yokes, wherein one pair of sub-yokes is symmetrically arranged on both sides of one of the contact components along the first direction, and the other pair of sub-yokes is symmetrically arranged on both sides of the other contact component along the first direction; four permanent magnets are respectively mounted on the surface of the four sub-yokes facing the insulating cover.

[0014] According to some embodiments of this disclosure, the sub-yoke includes a first portion and a second portion that are perpendicular to each other;

[0015] The two sub-yokes arranged symmetrically in the first direction have their first portions facing each other on their surfaces provided with permanent magnets, and the second portions of the two sub-yokes extend from their respective corresponding first portions along the first direction toward a direction that approaches each other.

[0016] According to some embodiments of this disclosure, the arc blowing assembly further includes an intermediate yoke, which is provided between adjacent stationary contacts in adjacent contact assemblies.

[0017] According to some embodiments of this disclosure, the insulating cover is further provided with an isolation seat, the isolation seat having an isolation structure, the isolation structure being provided between adjacent contact components, and the intermediate yoke being mounted on the isolation structure.

[0018] According to some embodiments of this disclosure, the isolation structure has two isolation walls spaced apart along the third direction, and the intermediate yoke is disposed between the two isolation walls.

[0019] According to some embodiments of this disclosure, the isolation wall has two sub-walls arranged at intervals along the first direction;

[0020] The intermediate yoke is provided between the adjacent sub-walls of the two isolation walls.

[0021] According to some embodiments of this disclosure, the insulating cover is further provided with two arc-extinguishing components, which are mounted on the isolation seat and are respectively located around the two contact components.

[0022] According to some embodiments of this disclosure, the isolating seat further has two pairs of mounting portions, with each pair of mounting portions located on one side of the two stationary contacts of the contact assembly facing away from each other;

[0023] The arc extinguishing assembly includes two arc extinguishing units, which are respectively installed in the two pairs of mounting parts.

[0024] According to some embodiments of this disclosure, the mounting part is connected to the isolation structure.

[0025] According to some embodiments of this disclosure, the mounting part and the isolation structure are an integral structure.

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

[0028] In this embodiment of the relay, the arrangement of the magnetic poles of the four permanent magnets ensures that, regardless of whether the relay is connected to a positive or negative current, the arc blowing assembly blows the arc between the four stationary contacts and the corresponding moving contacts in an oblique direction. Furthermore, the arc blowing directions of the paired stationary contacts are far apart from each other, preventing the Ampere forces of the paired stationary contacts from turning towards each other due to changes in the direction of the relay current. This achieves arc breaking between the stationary contacts and the moving contacts, ensuring that the moving contacts and stationary contacts of the relay can be disconnected in a timely manner.

[0029] Furthermore, by setting an intermediate yoke between adjacent stationary contacts in adjacent contact components, the magnetic field generated by the permanent magnet corresponding to one contact component can be reduced or even avoided from overflowing into another contact component, thus ensuring the magnetic field strength at the location of the stationary contact of the contact component and ensuring the arc blowing effect. Attached Figure Description

[0030] The embodiments described below, together with the specification, are used to explain the principles of this disclosure. It is obvious that the accompanying 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.

[0031] Figure 1 shows an exploded view of a relay according to an embodiment of the present disclosure.

[0032] Figures 2 and 3 show schematic diagrams of the arcing direction when the relay is connected to positive and negative currents.

[0033] Figure 4 shows a schematic diagram of the assembled insulating cover, isolating seat, and arc extinguishing assembly.

[0034] Figure 5 shows a schematic diagram of the assembly of the intermediate yoke and the isolation seat.

[0035] The reference numerals in the attached figures are explained as follows:

[0036] Wherein: 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. Permanent magnet; 330. Yoke clamp; 340. Sub-yoke; 341. First part; 342. Second part; 350. Intermediate yoke; 400. Isolator seat; 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

[0037] 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.

[0038] 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.

[0039] 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 two 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.

[0040] 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. The two contact assemblies 200a are arranged along the third direction D3.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] As shown in Figure 2, the relay of this embodiment further includes an arc-blowing assembly 300, which includes four permanent magnets 310. The four permanent magnets 310 are located on both sides of the contact portion 200 along the first direction D1, and correspond to the positions of the four stationary contacts 210. Specifically, the magnetic poles of the facing surfaces of two permanent magnets 310 corresponding to the same contact assembly 200a are opposite, and in the third direction D3, the magnetic poles of the faces of two adjacent permanent magnets 310 facing their respective stationary contacts 210 are opposite.

[0049] For ease of explanation, the four stationary contacts 210 are defined as A1, A2, A3, and A4, and the four permanent magnets 310 are defined as P1, P2, P3, and P4.

[0050] 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.

[0051] P1 and P2 are located on both sides of the contact assembly 200a, which includes A1 and A2, along the first direction D1. P1 corresponds to the position of A1, and P2 corresponds to the position of A2. P3 and P4 are located on both sides of the contact assembly 200a, which includes A3 and A4, along the first direction D1, respectively. P3 corresponds to the position of A3, and P4 corresponds to the position of A4.

[0052] 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 first direction D1.

[0053] 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. In addition, the current flow direction of the four stationary contacts 210 is A1 in and A2 out, and A4 in and A3 out.

[0054] Taking A1 as an example, the magnetic field lines M1 emitted from the N pole of P1 enter the S pole of P2 horizontally to the right. Magnetic field lines M2 scatter out along an arc to the lower left of A1, and magnetic field lines M3 scatter out along an arc to the upper left of A1. According to the left-hand rule, the direction of the Ampere force generated by M1 is vertically downward, the direction of the Ampere force generated by M2 is to the lower left, and the direction of the Ampere force generated by M3 is to the lower right. Since M3 is located to the upper left of A1, its influence on the direction of the resultant force is relatively weak, while M2, located to the lower left of A1, plays a dominant role in influencing the direction of the resultant force. Therefore, considering all factors, the Ampere force experienced by the arc generated between the moving contact 220 and A1 is F11, directed to the lower left.

[0055] Similarly, 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.

[0056] As shown in Figure 3, the magnetic pole arrangement of the four permanent magnets P1, P2, P3, and P4 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 and based on the above analysis of A1, it can be concluded that 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.

[0057] As can be seen from Figures 2 and 3, in the relay of this embodiment, through the arrangement of the magnetic poles of the four permanent magnets 310, regardless of whether the relay is connected to a positive or negative current, the arc blowing assembly 300 arranges the arc blowing direction between the four stationary contacts 210 and the corresponding moving contacts 220 obliquely, and the arc blowing directions of the paired stationary contacts 210 are far apart from each other, so that the Ampere forces of the paired stationary contacts 210 will not be opposite due to the change of the relay current direction, thereby realizing the arc breaking of the stationary contacts 210 and the moving contacts 220, and ensuring that the moving contacts 220 and the stationary contacts 210 of the relay can be broken in time.

[0058] As shown in Figure 4, permanent magnets 310 are arranged on the outer wall surface of the insulating cover 110. In this embodiment of the present disclosure, four permanent magnets 310 are arranged on the outer wall surface of the side wall 1112 of the ceramic cover 111.

[0059] The arc blowing assembly 300 also includes a yoke clamp 330 arranged on the outer periphery of the insulating cover 110, and a permanent magnet 310 mounted on the side surface of the yoke clamp 330 facing the insulating cover 110.

[0060] 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 permanent magnet 310 on the side surface of the yoke clamp 330 facing the insulating cover 110, the magnetic field lines of the permanent magnet 310 can be prevented from overflowing outward, thereby increasing the magnetic field strength and ensuring the arc blowing effect.

[0061] As shown in Figures 2 to 4, the yoke clamp 330 includes two pairs of sub-yokes 340, one pair of sub-yokes 340 being symmetrically arranged on both sides of one of the contact components 200a along the first direction D1, and the other pair of yokes 340 being symmetrically arranged on both sides of another contact component 200a along the first direction D1; four permanent magnets 310 are respectively mounted on the surface of the four sub-yokes 340 facing the insulating cover 110.

[0062] Of course, in other embodiments, the yoke clamp 330 may also be a single integral piece, rather than multiple separate pieces.

[0063] As shown in Figures 2 to 4, the sub-yoke 340 includes a first portion 341 and a second portion 342 that are perpendicular to each other. In one embodiment, one end of the first portion 341 is connected to one end of the second portion 342, so that the sub-yoke 340 generally forms an L-shaped structure.

[0064] Two sub-yokes 340s symmetrically arranged in the first direction D1 have permanent magnets 310 on their facing surfaces at their first portions 341. The second portions 342 of the two sub-yokes 340s extend from their respective first portions 341 along the first direction D1 toward each other. That is, if the sidewall 1112 of the ceramic cover 111 is a rectangular ring structure, the four sub-yokes 340 are respectively wrapped around the four corners of the rectangular ring structure.

[0065] As shown in Figures 2 to 4, the arc blowing assembly 300 also includes an intermediate yoke 350, which is disposed within the first cavity enclosed by the insulating cover 110 and the yoke plate 120. Intermediate yokes 350 are provided between adjacent stationary contacts 210 in adjacent contact assemblies 200a. The number of intermediate yokes 350 provided between adjacent stationary contacts 210 can be one or more.

[0066] For example, as shown in Figures 2 and 3, two intermediate yokes 350 are provided between A1 and A3, and two intermediate yokes 350 are provided between A2 and A4.

[0067] In this embodiment of the present disclosure, by providing an intermediate yoke 350 between adjacent stationary contacts 210 in adjacent contact components 200a, the magnetic field generated by the permanent magnet 310 corresponding to one contact component 200a can be prevented from overflowing into the other contact component 200a, thus ensuring the magnetic field strength at the location of the stationary contact 210 of the contact component 200a and ensuring the arc blowing effect.

[0068] 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 an intermediate yoke 350 is installed in the isolation structure 420.

[0069] 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.

[0070] In one embodiment, the isolation seat 400 is made of an insulating material, such as plastic or ceramic.

[0071] The isolation structure 420 has two isolation walls 421 arranged at intervals along the third direction D3, and the intermediate yoke 350 is located between the two isolation walls 421.

[0072] 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 intermediate yoke 350 can be installed in the gap between adjacent isolation walls 421.

[0073] Furthermore, the isolation wall 421 has two sub-walls 4211 spaced apart along the first direction D1. An intermediate yoke 350 is provided between adjacent sub-walls 4211 of the two isolation walls 421.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] The mounting part 430, the isolation structure 420 and the base 410 can be an integrated structure.

[0078] 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.

[0079] 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.

[0080] In summary, the relays of the present disclosure embodiments have at least the following advantages and beneficial effects:

[0081] In this embodiment of the relay, the arrangement of the magnetic poles of the four permanent magnets 310 ensures that, regardless of whether the relay is connected to a positive or negative current, the arc blowing assembly 300 obliquely arranges the arc blowing direction between the four stationary contacts 210 and the corresponding moving contacts 220. Furthermore, the arc blowing directions of the paired stationary contacts 210 are far apart from each other, preventing the Ampere forces of the paired stationary contacts 210 from facing each other due to changes in the relay current direction. This achieves arc breaking between the stationary contacts 210 and the moving contacts 220, ensuring that the moving contacts 220 and the stationary contacts 210 of the relay can be disconnected in a timely manner.

[0082] Furthermore, by providing an intermediate yoke 350 between adjacent stationary contacts 210 in adjacent contact components 200a, the magnetic field generated by the permanent magnet 310 corresponding to one contact component 200a can be prevented from overflowing into the other contact component 200a, thus ensuring the magnetic field strength at the location of the stationary contact 210 of the contact component 200a and ensuring the arc blowing effect.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] 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 in that, include: The contact portion includes two contact components, each of which includes 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, wherein 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; a plurality of contact components are arranged along the third direction; The arc blowing assembly includes four permanent magnets, which are respectively located on both sides of the contact portion along the first direction and correspond to the positions of the four stationary contacts. In this configuration, the magnetic poles of the surfaces of two permanent magnets corresponding to the same contact assembly that face each other are opposite, and in the third direction, the magnetic poles of the surfaces of two adjacent permanent magnets 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 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 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 pairs of sub-yokes, one pair of which is symmetrically arranged on both sides of one of the contact components along the first direction, and the other pair of which is symmetrically arranged on both sides of the other contact component along the first direction; four permanent magnets are respectively mounted on the surface of the four sub-yokes facing the insulating cover.

5. The relay according to claim 4, characterized in that, The sub-yoke comprises a first part and a second part that are perpendicular to each other. The two sub-yokes arranged symmetrically in the first direction have their first portions facing each other on their surfaces provided with permanent magnets, and the second portions of the two sub-yokes extend from their respective corresponding first portions along the first direction toward a direction that approaches each other.

6. The relay according to claim 3, characterized in that, The arc blowing assembly also includes a central yoke, which is provided between adjacent stationary contacts in adjacent contact assemblies.

7. The relay according to claim 6, characterized in that, The insulating cover is also provided with an isolation seat, which has an isolation structure. The isolation structure is provided between adjacent contact components, and the intermediate yoke is installed on the isolation structure.

8. The relay according to claim 7, characterized in that, The isolation structure has two isolation walls spaced apart along the third direction, and the intermediate yoke is disposed between the two isolation walls.

9. The relay according to claim 8, characterized in that, The isolation wall has two sub-walls spaced apart along the first direction; The intermediate yoke is provided between the adjacent sub-walls of the two isolation walls.

10. The relay according to claim 7, characterized in that, The insulating cover is also provided with two arc-extinguishing components, which are installed on the isolation base and located around the two contact components respectively.

11. The relay according to claim 10, characterized in that, The isolating seat also has two pairs of mounting parts, with the two mounting parts in a pair 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.

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

13. The relay according to claim 12, characterized in that, The mounting section and the isolation structure are an integral part of each other.

14. The relay according to claim 11, characterized in that, The arc-extinguishing unit includes multiple arc-extinguishing grid plates stacked along the second direction.

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