Relay

Abstract

The utility model discloses a relay which comprises a pair of static contacts, a movable assembly, an insulating cover, a first anti-rotation assembly and a second anti-rotation assembly. The movable assembly is used for being in contact with or separated from the pair of static contacts; the pair of static 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, the other first magnet is fixedly arranged relative to the insulating cover, and 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, the other second magnet is fixedly arranged relative to the insulating cover, and a second magnetic force is formed between the two paired second magnets; the first magnetic force and the second magnetic force are used for limiting rotation of the movable assembly around the axis of the movable assembly.

Description

Technical Field

[0001] The present application relates to the technical field of electronic control devices, and in particular to a relay. Background Art

[0002] A relay is an electronic control device that has a control system (also known as an input circuit) and a controlled system (also known as an output circuit). It is usually used in automatic control circuits. A relay is actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays the role of automatic regulation, safety protection, and circuit conversion in the circuit.

[0003] A high-voltage DC relay is a type of relay. A high-voltage DC relay in the prior art includes a pair of static contacts, an insulating cover, a moving assembly, and a magnetic circuit. The moving assembly includes a moving contact piece, a push rod component, and an elastic component. The moving contact piece is mounted on the push rod component through the elastic component. The magnetic circuit includes a static iron core, a moving iron core, and a coil. The static iron core is fixedly arranged in the relay, and the moving iron core is connected to the push rod component. When the coil is energized, the static iron core can generate a magnetic attraction and attract the moving iron core to move, thereby driving the push rod component to move together with the moving contact piece to achieve contact closure.

[0004] In the related art, in order to limit the rotation range of the moving component around the axis of the push rod component, a convex rib is usually provided on the inner wall surface of the insulating cover so that a small gap is formed between the side surface of the moving component and the convex rib.

[0005] However, after the relay is opened and closed many times, the side of the moving component is likely to produce contact friction with the convex rib. On the one hand, as the number of frictions increases, the wear of the moving component increases, which in turn causes the matching clearance between the moving component and the convex rib to increase, causing the amplitude of the rotation of the moving component around the axis of the push rod component to increase, affecting the contact position of the moving contact piece and the static contact, resulting in unstable contact resistance. On the other hand, metal particles are likely to be generated after the moving component rubs against the convex rib. After the metal particles fall on the contact surface of the contact, it is easy to cause the contact resistance to increase or even cause the relay to fail to conduct. Utility Model Content

[0006] The embodiment of the present application provides a relay to improve the problem of unstable contact resistance or even failure of conduction of the relay existing in the related art.

[0007] The relay of the embodiment of the present application includes:

[0008] A pair of stationary contacts;

[0009] A moving assembly, used for contacting or separating with the pair of stationary contacts;

[0010] an insulating cover, to which the pair of static contacts are connected;

[0011] A first anti-rotation assembly comprises at least one pair of first magnets, wherein one of the first magnets in each pair is connected to the moving assembly, 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; and

[0012] 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 paired second magnets; the first magnetic force and the second magnetic force are used to limit the rotation of the moving component around the axis of the moving component.

[0013] According to some embodiments of the present application, the first magnetic force and the second magnetic force are both repulsive forces or attractive forces.

[0014] According to some embodiments of the present application, when the first magnetic force and the second magnetic force are both repulsive forces, another first magnet is fixedly connected to the inner wall surface of the insulating cover, and another second magnet is fixedly connected to the inner wall surface of the insulating cover.

[0015] According to some embodiments of the present application, when the first magnetic force and the second magnetic force are both suction forces, another first magnet is fixedly connected to the outer wall surface of the insulating cover, and another second magnet is fixedly connected to the outer wall surface of the insulating cover.

[0016] According to some embodiments of the present application, the first anti-rotation component and the second anti-rotation component are respectively located on both sides of the moving component along the third direction;

[0017] The arrangement direction of the pair of static contacts is defined as a first direction, the movement direction of the dynamic component is defined as a second direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0018] According to some embodiments of the present application, the orthographic projections of the two first magnets in a pair on a target plane have overlapping first projections, and the orthographic projections of the two second magnets in a pair on the target plane have overlapping second projections;

[0019] Wherein, the target plane is parallel to the moving direction of the moving component.

[0020] According to some embodiments of the present application, the arrangement direction of the pair of static contacts is defined as a first direction, the movement direction of the dynamic 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 perpendicular to each other;

[0021] The target plane is perpendicular to the third direction.

[0022] According to some embodiments of the present application, when the coil of the relay is powered on or off, the orthographic projections of the two first magnets in a pair on the target plane each have overlapping first projections, and the orthographic projections of the two second magnets in a pair on the target plane each have overlapping second projections.

[0023] According to some embodiments of the present application, the first anti-rotation component and the second anti-rotation component are symmetrically arranged about the axis of the moving component.

[0024] According to some embodiments of the present application, the two first magnets in each pair are arranged at intervals; and / or the two second magnets in each pair are arranged at intervals.

[0025] According to some embodiments of the present application, the first magnet and the second magnet are permanent magnets.

[0026] According to some embodiments of the present application, the moving assembly includes a contact support;

[0027] The first magnet of the first anti-rotation assembly is connected to the contact bracket, and the second magnet of the second anti-rotation assembly is connected to the contact bracket.

[0028] According to some embodiments of the present application, the contact support includes two side plates arranged at intervals, and the two side plates are respectively connected to the first magnet and the second magnet.

[0029] According to some embodiments of the present application, the side plate has an inner side surface and an outer side surface disposed opposite to the inner side surface along a thickness direction of the side plate;

[0030] The first magnet is connected to the inner side surface or the outer side surface of one of the side plates, and the second magnet is connected to the inner side surface or the outer side surface of the other side plate.

[0031] According to some embodiments of the present application, the movable assembly includes a movable contact assembly for contacting or separating with a pair of the stationary contacts;

[0032] The movable contact component has two side edges arranged in opposite directions, one of the side edges is connected to at least one of the first magnets, and the other of the side edges is connected to at least one of the second magnets.

[0033] According to some embodiments of the present application, the movable assembly further includes a contact bracket, the movable contact assembly is arranged in a space surrounded by the contact bracket, and includes a movable contact piece for contacting or separating with a pair of the stationary contacts;

[0034] Both ends of the moving contact piece in the length direction are connected to the first magnet and the second magnet, and the first magnet and the second magnet are located outside the contact bracket.

[0035] According to some embodiments of the present application, the movable contact assembly includes a movable contact piece and a lower magnetic conductor, the movable contact piece is used to contact or separate with a pair of the stationary contacts, and the lower magnetic conductor is fixedly connected to a side of the movable contact piece facing away from the stationary contacts;

[0036] The relay further includes an upper magnetic conductor, which is located on the side of the moving contact piece facing the static contact, and the upper magnetic conductor and the lower magnetic conductor are used to form a magnetic conductive circuit;

[0037] The two outer sides of the lower magnetic conductor are respectively the two side edges, and are respectively connected to the first magnet and the second magnet.

[0038] According to some embodiments of the present application, the movable assembly includes a movable contact assembly and a contact bracket, the movable contact assembly is arranged in the space surrounded by the contact bracket, and is used to contact or separate with a pair of the static contacts; the contact bracket includes two side plates arranged at intervals, and the movable contact assembly has two side edges arranged in opposite directions;

[0039] The first anti-rotation assembly includes at least two pairs of the first magnets, one of the side plates is connected to at least one of the first magnets, and one of the side edges is connected to at least one of the first magnets;

[0040] The second anti-rotation component includes at least two pairs of the second magnets, another of the side plates is connected to at least one of the second magnets, and another of the side edges is connected to at least one of the second magnets.

[0041] According to some embodiments of the present application, the side plate has an inner side surface facing the movable contact assembly and an outer side surface disposed opposite to the inner side surface along a thickness direction of the side plate;

[0042] The first magnet is connected to the inner side surface or the outer side surface of one of the side plates, and the second magnet is connected to the inner side surface or the outer side surface of the other side plate.

[0043] According to some embodiments of the present application, the movable contact assembly includes a movable contact piece for contacting or separating with a pair of the stationary contacts;

[0044] Both ends of the moving contact piece in the length direction are connected to the first magnet and the second magnet, and the first magnet and the second magnet are located outside the contact bracket.

[0045] According to some embodiments of the present application, the first magnet located on one side of the movable contact piece is symmetrically arranged with the first magnet on one of the side plates;

[0046] 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.

[0047] According to some embodiments of the present application, the insulating cover includes:

[0048] A top wall connected to a pair of static contacts; and

[0049] The cylindrical side wall is connected to the outer periphery of the top wall.

[0050] According to some embodiments of the present application, the cylindrical sidewall further includes two first sidewalls and two second sidewalls, the two first sidewalls are arranged opposite to each other along a first direction, the two second sidewalls are arranged opposite to each other along a third direction, and the two first sidewalls and the two second sidewalls are sequentially connected end to end to form an annular structure;

[0051] The arrangement direction of the pair of static contacts is defined as the first direction, the movement direction of the dynamic component is defined as the second direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0052] According to some embodiments of the present application, the movable assembly includes a movable contact assembly, a push rod, a mounting seat and a contact bracket, the mounting seat is connected to one axial end of the push rod, the contact bracket is connected to the mounting seat, and the movable contact assembly is inserted into the space surrounded by the contact bracket and is used to contact or separate with a pair of the static contacts;

[0053] The movable assembly further includes a first elastic member, which is located between the mounting seat and the movable contact assembly and is used to provide an elastic force for the movable contact assembly to move toward the stationary contact.

[0054] One embodiment of the above application has at least the following advantages or beneficial effects:

[0055] The relay of the embodiment of the present application can limit the rotation of the moving component around the axis of the moving component by setting the first anti-rotation component and the second anti-rotation component, thereby avoiding the problem that metal particles and / or ceramic powders are generated and fall on the contact surface of the contact point due to the contact friction between the moving component and the insulating cover, resulting in increased contact resistance or even non-conduction, thereby ensuring the reliability of the relay operation. At the same time, the first anti-rotation component and the second anti-rotation component can also reduce the rotation amplitude of the moving component, thereby ensuring the consistency of the contact position of the moving and static contacts, and improving the stability of the contact resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 is an exploded schematic diagram of a relay according to an exemplary embodiment.

[0057] Figure 2 is a schematic top view of a relay according to an exemplary embodiment, in which a housing, a coil frame, a coil, a U-shaped yoke, and an arc extinguishing part are omitted.

[0058] Figure 3 is along Figure 2 Section view along the AA cutting line.

[0059] Figure 4 is along Figure 2 A cross-sectional view taken along line BB in FIG. 1 shows the relay of the first embodiment of the present application.

[0060] Figure 5 It is a three-dimensional schematic diagram of the first anti-rotation component, the second anti-rotation component, and the moving component of the first embodiment of the present application after being assembled.

[0061] Figure 6 It is a schematic diagram of the exploded view of the first anti-rotation component, the second anti-rotation component, the moving component, and the insulating cover of the first embodiment of the present application.

[0062] Figure 7 is along Figure 2 A cross-sectional view taken along line BB in FIG. 1 shows a relay according to a second embodiment of the present application.

[0063] Figure 8 It is a three-dimensional schematic diagram of the first anti-rotation component, the second anti-rotation component, and the moving component of the second embodiment of the present application after being assembled.

[0064] Fig. 9 It is a schematic diagram of the exploded view of the first anti-rotation component, the second anti-rotation component, the moving component, and the insulating cover of the second embodiment of the present application.

[0065] Fig.10 is along Figure 2 A cross-sectional view taken along line BB is shown, which shows a relay according to a third embodiment of the present application.

[0066] Fig.11 It is a three-dimensional schematic diagram of the first anti-rotation component, the second anti-rotation component, and the moving component of the third embodiment of the present application after being assembled.

[0067] Fig.12 It is a schematic diagram of the decomposition of the first anti-rotation component, the second anti-rotation component, the moving component, and the insulating cover of the third embodiment of the present application.

[0068] Fig.13 It is a three-dimensional schematic diagram of the first anti-rotation component, the second anti-rotation component, and the moving component of the fourth embodiment of the present application after being assembled. DETAILED DESCRIPTION

[0069] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0070] It is understood that the terms "including" and "having" and any variations thereof in the embodiments of the present application are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or components that are inherent to these processes, methods, products, or devices.

[0071] like Figures 1 to 3 As shown, the relay of the embodiment of the present application includes a housing 10, an insulating cover 21, a yoke iron plate 25, a pair of stationary contacts 22, an arc extinguishing part 26, a moving component 30 and a magnetic circuit part 40. The insulating cover 21, the yoke iron plate 25, a pair of stationary contacts 22, the arc extinguishing part 26, the moving component 30 and the magnetic circuit part 40 are arranged in the housing 10.

[0072] Among them, the housing 10 includes an upper shell 11 and a bottom shell 12, which are connected to form a chamber for accommodating an insulating cover 21, a yoke iron plate 25, a pair of static contacts 22, an arc extinguishing part 26, a moving component 30 and a magnetic circuit part 40.

[0073] like Figure 3 As shown, the insulating cover 21 has an inner cavity 212, a pair of static contacts 22 are installed on the top of the insulating cover 21, at least part of each static contact 22 extends into the inner cavity 212 of the insulating cover 21, and a static contact point is also provided at the bottom of each static contact 22, and the static contact point can be integrally or separately provided at the bottom of the static contact 22. One static contact 22 serves as a terminal for current to flow in, and the other static contact 22 serves as a terminal for current to flow out.

[0074] In the embodiment of the present application, two openings 211 are formed on the top of the insulating cover 21, and each opening 211 is connected to the inner cavity 212. A pair of static contacts 22 are respectively disposed in the two openings 211. Moreover, each static contact 22 and the insulating cover 21 can be connected by welding, but the present invention is not limited thereto.

[0075] It is understandable that the insulating cover 21 may 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 may also be made of plastic material.

[0076] In an embodiment of the present application, the insulating cover 21 is made of ceramic material, and the insulating cover 21 is connected to the yoke iron plate 25 through a frame sheet 24. The frame sheet 24 can be a metal piece with an annular structure, such as an iron-nickel alloy. One end of the frame sheet 24 is connected to the opening edge of the insulating cover 21, for example, by laser welding, brazing, resistance welding, gluing, etc. The other end of the frame sheet 24 is connected to the yoke iron plate 25, which can also be done by laser welding, brazing, resistance welding, gluing, etc. A frame sheet 24 is arranged between the insulating cover 21 and the yoke iron plate 25 to facilitate the connection between the insulating cover 21 and the yoke iron plate 25.

[0077] 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 24 . The top wall 213 and the cylindrical side wall 214 together form an inner cavity 212 .

[0078] The top wall 213 is provided with two openings 211 , and a pair of static contacts 22 are respectively disposed in the two openings 211 . Each static contact 22 and the top wall 213 may be connected by welding, but the present invention is not limited thereto.

[0079] Please continue reading Figure 3 The movable assembly 30 includes a movable contact assembly 30a, a first elastic member 32 and a push rod member 33. The movable contact assembly 30a is movable between a first position contacting with a pair of stationary contacts 22 and a second position away from the pair of stationary contacts 22, and the push rod member 33 is used to drive the movable contact assembly 30a to move.

[0080] For the convenience of explanation, the arrangement direction of the pair of stationary contacts 22 is defined as the first direction D1, and the movement direction of the moving assembly 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.

[0081] The movable contact assembly 30 a is disposed in the insulating cover 21 and includes a movable contact piece 31 . 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 .

[0082] The push rod member 33 is movably disposed in 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 facing away from the stationary contact 22 .

[0083] The movable contact piece 31 is movably mounted on the portion of the push rod member 33 extending from the side surface of the yoke iron plate 25 toward the stationary contact 22. The first elastic member 32 is connected to the push rod member 33 and the movable contact piece 31, and is used to apply an elastic force toward the stationary contact 22 to the movable contact piece 31 to provide contact pressure.

[0084] As an example, the first elastic member 32 is a spring or a leaf spring, but is not limited thereto. In addition, the number of the first elastic member 32 may be one or more. When the number of the first elastic member 32 is multiple, the multiple first elastic members 32 may all be springs, or all be leaf springs, or may be a combination of leaf springs and springs, and the present application does not make any special limitation on this.

[0085] The side surface of the yoke iron plate 25 facing away from the static contact 22 is also covered with a metal cover 27, and the metal cover 27 covers the first through hole 251 of the yoke iron plate 25. The push rod member 33 extending from the side surface of the yoke iron plate 25 facing away from the static contact 22 is inserted into the metal cover 27.

[0086] Please continue reading Figure 1 and Figure 3 The magnetic circuit part 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 in a hollow cylindrical shape and is made of insulating material. The coil frame 43 is located on the side of the yoke iron 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.

[0087] The static iron core 42 is fixedly disposed in the metal cover 27, and part of the static iron core 42 is inserted into the first through hole 251. The static iron core 42 has a second through hole 421, and the second through hole 421 corresponds to the position of the first through hole 251, so that the push rod member 33 can be movably penetrated in the first through hole 251 and the second through hole 421. The moving iron core 41 is movably disposed in the metal cover 27, and is arranged relative to the static iron core 42 in the second direction D2. The moving iron core 41 is connected to the push rod member 33, and is used to be attracted by the static 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.

[0088] like Figure 3 As shown, the magnetic circuit portion 40 further includes a second elastic member 46, which is located in the metal cover 27 and disposed between the static iron core 42 and the moving iron core 41, and is used to reset the moving iron core 41 when the coil 44 is de-energized.

[0089] In one embodiment, the second elastic member 46 is a spring and is sleeved on the outer circumference of the push rod member 33 , but the present invention is not limited thereto.

[0090] 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 member 33 to move upward. When the moving contact piece 31 contacts the stationary contact 22, the moving contact piece 31 is stopped by the stationary contact 22, and the push rod member 33 will continue to move upward until the overtravel is completed.

[0091] During the overtravel process, the first elastic member 32 is squeezed by the push rod member 33 and can provide elastic force to the movable contact piece 31 to provide contact point pressure.

[0092] like Figure 1 and Figure 3 As shown, the magnetic circuit part 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 the two ends of the bottom yoke plate 471 along the first direction D1, and the two side yoke plates 472 are arranged opposite to each other along the first direction D1. The bottom yoke plate 471 is arranged on the side of the coil frame 43 facing away from the static contact 22, and the ends of the two side yoke plates 472 away from the bottom yoke plate 471 are respectively connected to the two ends of the yoke plate 25 along the first direction D1. The coil 44, the coil frame 43, the metal cover 27 and the moving iron core 41 are accommodated in the space surrounded by the yoke plate 25 and the bottom yoke plate 471 and the two side yoke plates 472 of the U-shaped yoke 47.

[0093] like Figure 1 As shown, the arc extinguishing part 26 includes a permanent magnet 262, and the permanent magnet 262 is arranged on the outer side of the insulating cover 21. By arranging 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 piece 31. Therefore, through the effect of the magnetic field, the arc generated between the stationary contact 22 and the moving contact 31 will be stretched in a direction away from each other, thereby achieving arc extinguishing.

[0094] The arc extinguishing part 26 further includes a yoke clamp 261, and a permanent magnet 262 is disposed between a side surface of the yoke clamp 261 facing the insulating cover 21 and an outer peripheral surface of the insulating cover 21. By designing that the yoke clamp 261 surrounds the permanent magnet 262, it is possible to prevent the magnetic field generated by the permanent magnet 262 from spreading outward and affecting the arc extinguishing effect.

[0095] 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 alloys thereof.

[0096] It is understandable that the number of the yoke clips 261 can be one or two. When the number of the yoke clips 261 is one, the yoke clip 261 forms an annular structure surrounding the outer periphery of the insulating cover 21. When the number of the yoke clips 261 is two, each yoke clip 261 can be U-shaped and arranged opposite to each other along the first direction D1, and the two yoke clips 261 respectively surround the two ends of the insulating cover 21 along the first direction D1.

[0097] Please return to Figure 2The cylindrical side wall 214 includes two first side walls 2141 and two second side walls 2142. The two first side walls 2141 are arranged opposite to each other along the first direction D1, and the two second side walls 2142 are arranged opposite to each other along the third direction D3. The two first side walls 2141 and the two second side walls 2142 are connected end to end in sequence to form an annular structure. The two second side walls 2142 are located around the first position and the second position.

[0098] It is understandable that the present application does not specifically limit the shape of the cylindrical side wall 214 . For example, the annular structure formed by the cylindrical side wall 214 may be rectangular, circular, elliptical, etc.

[0099] The moving assembly 30 has a first side 30 b and a second side 30 c disposed opposite to each other along the third direction D3 , and the first side 30 b and the second side 30 c correspond to the two second side walls 2142 , respectively.

[0100] like Figures 4 to 6 As shown, the push rod member 33 includes a push rod 333, a mounting seat 332 and a contact bracket 331. The mounting seat 332 is connected to one axial end of the push rod 333, and the contact bracket 331 is connected to the mounting seat 332. The push rod 333 is movably arranged in the first through hole 251 along the second direction D2. At least part of the movable contact assembly 30a is arranged in the space surrounded by the contact bracket 331, and the first elastic member 32 is arranged between the movable contact assembly 30a and the mounting seat 332.

[0101] like Figure 4 As shown, the contact support 331 includes two side plates 3311, one end of the two side plates 3311 along the second direction D2 is connected to the mounting seat 332, and the two side plates 3311 are arranged at intervals along the third direction D3, and 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.

[0102] The mounting seat 332 may be made of plastic material, and the two side panels 3311 , the push rod 333 and the mounting seat 332 may be integrally formed by injection molding, but the present invention is not limited thereto.

[0103] Optionally, a connecting plate 3314 may be connected between the two side plates 3311, and both ends of the connecting plate 3314 along the third direction D3 are integrally connected to one end of the two side plates 3311 along the second direction D2, and the mounting seat 332 is coated on the outer periphery of the connecting plate 3314 and on the connection position between the connecting plate 3314 and the side plates 3311. In the embodiment of the present application, the two side plates 3311 and the connecting plate 3314 form a U-shape.

[0104] The contact support 331 further includes a fixing plate 3312, the two ends of which along the third direction D3 are respectively connected to one end 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 a space surrounded by the fixing plate 3312, the two side plates 3311 and the mounting seat 332.

[0105] In one embodiment, the fixing plate 3312 is provided with protrusions 3312a at both ends along the third direction D3, each side plate 3311 has a mounting hole 3313 penetrating the inner side surface 3311a and the outer side surface 3311b, and the two protrusions 3312a are respectively confined in the two mounting holes 3313.

[0106] like Figures 4 to 6 As shown, the moving assembly 30 further includes an upper magnetic conductor 34 a , which is fixedly connected to a surface of the fixing plate 3314 facing the mounting seat 332 , for example, by riveting, but not limited thereto.

[0107] The movable contact assembly 30a further includes a lower magnet 35a, which is fixedly connected to the side of the movable contact piece 31 facing away from the stationary contact 22. When both ends of the movable contact piece 31 are in contact with a pair of stationary contacts 22, the lower magnet 35a moving together with the movable contact piece 31 approaches or contacts the upper magnet 34a, thereby forming a magnetic conductive loop around the movable contact piece 31 between the upper magnet 34a and the lower magnet 35a. When a short-circuit current passes through the movable contact piece 31, an attractive force is generated between the upper magnet 34a and the lower magnet 35a in the direction of contact pressure, and the attractive force can resist the electromotive repulsion between the movable contact piece 31 and the stationary contact 22 due to the short-circuit current, ensuring that the movable contact piece 31 and the stationary contact 22 do not bounce apart, thereby playing an anti-short-circuit role.

[0108] The upper magnetic conductor 34a may include one or more first magnetic conductors 34, and the lower magnetic conductor 35 may include one or more second magnetic conductors 35. The number of the first magnetic conductors 34 and the number of the second magnetic conductors 35 may be the same or different.

[0109] For example, in an embodiment of the present application, the number of the first magnetic conductors 34 and the number of the second magnetic conductors 35 are both two; in another embodiment, the number of the first magnetic conductors 34 can be one, the number of the second magnetic conductors 35 can be multiple, and a magnetic circuit can be formed between each second magnetic conductor 35 and the first magnetic conductor 34.

[0110] It is understandable that the first magnetic conductor 34 and the second magnetic conductor 35 can both be straight, U, L or E shaped, and can be made of magnetic materials such as iron, cobalt, nickel, and alloys thereof.

[0111] In another embodiment, the first magnetic conductor 34 can also be fixed 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 iron plate through a fixed bracket. In this way, the anti-short circuit suction force is transferred to the stationary part, so there is no need for excessive coil holding force, thereby reducing the power consumption of the relay coil and the volume of the relay, and improving the anti-short circuit capability.

[0112] In another embodiment, the distance between the first magnetizer 34 and the second magnetizer 35 can be designed to be variable. Specifically, the distance between the first magnetizer 34 and the second magnetizer 35 can be adjusted according to the current value, thereby changing the suction force generated between the first magnetizer 34 and the second magnetizer 35, while meeting the requirements of short circuit resistance and overload disconnection.

[0113] like Figures 4 to 6 As shown, the relay of the embodiment of the present application further includes a first anti-rotation component 610 and a second anti-rotation component 620, and the first anti-rotation component 610 and the second anti-rotation component 620 are respectively arranged 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 first magnet 611 in each pair is connected to the moving component 30, and the other first magnet 611 is fixedly arranged relative to the insulating cover 21, and a first magnetic force is formed between the two paired first magnets 611; the second anti-rotation component 620 includes at least one pair of second magnets 621, one second magnet 621 in each pair is connected to the moving component 30, and the other second magnet 621 is fixedly arranged relative to the insulating cover 21, and a second magnetic force is formed between the two paired second magnets 621, and the first magnetic force and the second magnetic force are used to limit the moving component 30 from rotating around the axis of the moving component 30.

[0114] It should be noted that the other first magnet 611 is fixedly arranged relative to the insulating cover 21 and includes multiple embodiments. For example, the first magnet 611 is fixedly connected to the inner wall surface of one of the second side walls 2142; or, the first magnet 611 is fixedly connected to the outer wall surface of the second side wall 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 iron plate 25, and the bracket can be located inside the insulating cover 21 or outside the insulating cover 21.

[0115] Similarly, another second magnet 621 is fixedly arranged relative to the insulating cover 21 and includes multiple 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 fixedly connected to the yoke iron plate 25, and the bracket can be located inside the insulating cover 21 or outside the insulating cover 21.

[0116] 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 respectively connected to two different brackets.

[0117] It should also be noted that the first magnetic force and the second magnetic force can both be repulsive forces or attractive forces. When the first magnetic force is repulsive, the polarities of the magnetic poles facing the two paired magnets are the same; when the first magnetic force is attractive, the polarities of the magnetic poles facing the two paired magnets are opposite.

[0118] As an example, when the first magnetic force and the second magnetic force are repulsive forces, another first magnet 611 and another second magnet 621 are respectively connected to the inner wall surfaces of the two second side walls 2142, so that under the action of the repulsive force, the first magnet 611 and the second magnet 621 can fit more closely with the inner wall surfaces of the corresponding second side walls 2142.

[0119] As another example, when the first magnetic force and the second magnetic force are suction forces, another first magnet 611 and another second magnet 621 are respectively connected to the outer wall surfaces of the two second side walls 2142, so that under the action of the suction force, the first magnet 611 and the second magnet 621 can fit more closely with the outer wall surfaces of the corresponding second side walls 2142.

[0120] Next, another first magnet 611 and another second magnet 621 are respectively connected to the inner wall surfaces of the two second side walls 2142, and the first magnetic force and the second magnetic force are both repulsive forces. This example is used for description, but the present invention is not limited thereto.

[0121] like Figures 4 to 6As shown, the two first magnets 611 in a pair are respectively connected to the first side 30b of the moving component 30 and the inner wall surface of one of the second side walls 2142, and the polarities of the magnetic poles facing each other of the two first magnets 611 in each pair are the same. The two second magnets 621 in each pair are respectively connected to the second side 30c of the moving component 30 and the inner wall surface of the other second side wall 2142, and the polarities of the magnetic poles facing each other of the two second magnets 621 in each pair are the same.

[0122] In the relay of the embodiment of the present application, the polarities of the magnetic poles facing each other of the two paired first magnets 611 in the first anti-rotation component 610 are the same, so a repulsive force is generated between the two first magnets 611, and the polarities of the magnetic poles facing each other of the two paired second magnets 621 in the second anti-rotation component 620 are the same, so a repulsive force is generated between the two second magnets 621, and the first side 30b and the second side 30c of the moving component 30 are both subjected to the repulsive force, and the moving component 30 is equivalent to being suspended between the two second side walls 2142. When the moving component 30 deflects in the direction close to a second side wall 2142, the distance between the two magnets becomes smaller, and then the repulsive force increases, and the repulsive force can prevent the moving component 30 from continuing to rotate in the direction close to the second side wall 2142, thereby preventing the moving component 30 from contacting the second side wall 2142 and generating noise.

[0123] It can be seen that the relay of the embodiment of the present application can limit the rotation of the moving component 30 around the axis of the moving component 30 by setting the first anti-rotation component 610 and the second anti-rotation component 620, avoiding the problem that the contact resistance becomes larger or even becomes non-conductive due to the contact friction between the moving component 30 and the second side wall 2142, thereby ensuring the reliability of the relay operation. At the same time, 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 position of the moving and static contacts, and improving the stability of the contact resistance.

[0124] The orthographic projections of the two paired first magnets 611 on a target plane each have overlapping first projections, and the orthographic projections of the two paired second magnets 621 on the target plane each have overlapping second projections; wherein the target plane is perpendicular to the third direction D3. When the coil of the relay is powered on or off, the orthographic projections of the two paired first magnets 611 on a target plane each have overlapping first projections, and the orthographic projections of the two paired second magnets 621 on the target plane each have overlapping second projections. That is to say, during the entire process of the movement of the moving component 30, the orthographic projections of the two paired first magnets 611 on a target plane each have overlapping first projections, and the orthographic projections of the two paired second magnets 621 on the target plane each have overlapping second projections. In this way, the moving component 30 is subjected to the magnetic force during the entire process of the movement, so that the moving component 30 has an anti-rotation effect during the entire process of the movement.

[0125] As an example, the orthographic projection areas of the two paired first magnets 611 on the target plane are different. For example, the orthographic projection area of ​​the first magnet 611 connected to the insulating cover 21 is larger, and the orthographic projection area of ​​the first magnet 611 connected to the moving component 30 is smaller. In addition, during the entire process of the moving component 30 moving, the orthographic projection of the first magnet 611 connected to the moving component 30 is always located within the orthographic projection of the first magnet 611 connected to the insulating cover 21.

[0126] Similarly, the orthographic projection areas 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, and the orthographic projection area of ​​the second magnet 621 connected to the moving component 30 is smaller. In addition, during the entire process of the moving component 30 moving, 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.

[0127] 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 orthographic projection area of ​​the first magnet 611 connected to the insulating cover 21 is smaller, and the orthographic projection area of ​​the first magnet 611 connected to the moving component 30 is larger, the orthographic projection area of ​​the second magnet 621 connected to the insulating cover 21 is smaller, and the orthographic projection area of ​​the second magnet 621 connected to the moving component 30 is larger.

[0128] like Figure 4As shown, the first anti-rotation component 610 and the second anti-rotation component 620 are symmetrically arranged with respect to the axis of the moving component 30. For the purpose of illustration, 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. The pair of first magnets 611 and the pair of second magnets 621 are symmetrically arranged with respect to the axis of the moving component 30, so that the sizes of the four magnets can be designed to be the same. When installing the four magnets, it is only necessary to consider that the magnetic forces between the pair of first magnets 611 and the pair of second magnets 621 are repulsive or attractive forces, without considering the sizes of the four magnets. On the one hand, the shapes and sizes of the multiple magnets are consistent, which improves the versatility of the magnets; on the other hand, it is also convenient for installation and improves installation efficiency.

[0129] 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.

[0130] In the embodiment of the present application, the two magnets are arranged at intervals, that is, there is a gap between the two magnets and they are not in direct contact. When the moving assembly 30 rotates around the axis of the push rod, repulsion is generated between the two magnets and they are not in direct contact. In this way, the two magnets can both prevent rotation and avoid friction noise caused by direct contact between the two magnets.

[0131] like Figures 4 to 6 As shown, one of the two first magnets 611 in the first anti-rotation assembly 610 is connected to the first side 30b of the contact support 331, and the other first magnet 611 is connected to the inner wall surface of one of the second side walls 2142. One of the two second magnets 621 in the second anti-rotation assembly 620 is connected to the second side 30c of the contact support 331, and the other second magnet 621 is connected to the inner wall surfaces of the two second side walls 2142.

[0132] In the embodiment of the present application, one of the two paired magnets is arranged on the contact bracket 331, and the other is arranged on the second side wall 2142 of the insulating cover 21. The repulsive force generated between the two magnets can prevent the contact bracket 331 from deflecting during the movement of the moving component 30, thereby preventing the moving contact piece 31 from deflecting to a certain extent.

[0133] In one embodiment, the two side plates 3311 of the contact bracket 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 a flat plate structure and fit on the surface of the side plate 3311, so that the surface area of ​​the magnet is larger, thereby increasing the repulsive force between the two paired magnets and improving the anti-deflection capability.

[0134] It is understandable that the present application does not specifically limit on which side of the side plate 3311 of the contact support 331 the magnet is disposed. For example, each side plate 3311 has an inner side surface 3311a facing the movable contact assembly 30a and an outer side surface 3311b disposed opposite to the inner side surface 3311a along the thickness direction of the side plate 3311. In one embodiment, the outer side surfaces 3311b of the two side plates 3311 are respectively connected to the first magnet 611 and the second magnet 621; in another embodiment, the inner side surfaces 3311a of the two side plates 3311 are respectively connected to the first magnet 611 and the second magnet 621; in yet another embodiment, the inner side surface 3311a of one side plate 3311 is connected to the first magnet 611, and the outer side surface 3311b of the other side plate 3311 is connected to the second magnet.

[0135] In one embodiment, the first magnet 611 and the second magnet 621 are both permanent magnets and can be connected to the side plate 3311 by bonding.

[0136] Of course, it is understandable that the magnet connected to the movable component 30 may not be installed on the side plate 3311 of the contact bracket 331. In other embodiments, the magnet connected to the movable component 30 may also be connected to both sides of the mounting seat 332 along the third direction D3, or connected to both sides of the fixing plate 3312 along the third direction D3, or connected to both sides of the upper magnetic conductor 34a along the third direction D3. When the magnet connected to the movable 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, the magnet connected to the movable component 30 is directly connected to both sides of the first magnetic conductor 34 along the third direction D3; if the upper magnetic conductor 34a includes a plurality of first magnetic conductors 34 arranged side by side along the third direction D3, the magnet connected to the movable component 30 is connected to the outermost sides of the two outermost first magnetic conductors 34 among the plurality of first magnetic conductors 34.

[0137] like Figures 7 to 9 As shown, the similarities between the second embodiment of the present application and the first embodiment are not repeated here, and the difference lies in that the magnet is connected to the movable contact component 30a.

[0138] Specifically, the movable contact assembly 30 a has two side edges 30 d facing the two second side walls 2142 , respectively, wherein one of the side edges 30 d is connected to at least one first magnet 611 , and the other side edge 30 d is connected to at least one second magnet 621 .

[0139] In the embodiment of the present application, the two side edges 30d of the movable contact component 30a are respectively connected to the first magnet 611 and the 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 static contact 22, and improving the stability of the contact resistance.

[0140] As an example, both ends of the movable contact piece 31 along the first direction D1 are connected to the first magnet 611 and the second magnet 621, and the first magnet 611 and the second magnet 621 are located outside the contact bracket 331. The two sides of the movable contact piece 31 along the third direction D3 are the two side edges 30d of the movable contact assembly 30a.

[0141] In the embodiment of the present application, the first anti-rotation component 610 includes two pairs of first magnets 611, wherein one of the pair of first magnets 611 is connected to one end of the moving contact piece 31, and the other first magnet 611 is connected to the inner wall surface of one of the second side walls 2142; one of the other pair of first magnets 611 is connected to the other end of the moving contact piece 31, and the other first magnet 611 is connected to the inner wall surface of one of the second side walls 2142.

[0142] The second anti-rotation component 620 includes two pairs of second magnets 621, wherein one of the pair of second magnets 621 is connected to one end of the moving contact piece 31, and the other second magnet 621 is connected to the inner wall surface of the other second side wall 2142; one of the other pair of second magnets 621 is connected to the other end of the moving contact piece 31, and the other second magnet 621 is connected to the inner wall surface of the other second side wall 2142.

[0143] In the third direction D3 , the first magnet 611 and the second magnet 621 at one end of the movable contact piece 31 are arranged at intervals, and the first magnet 611 and the second magnet 621 at the other end of the movable contact piece 31 are arranged at intervals.

[0144] Of course, in other embodiments, the first magnet 611 and the second magnet 621 may also be connected to the second magnetic conductor 35 .

[0145] In addition, it is worth mentioning that the magnet can also be connected to the lower magnetic conductor 35a.

[0146] For example, two outer sides of the lower magnetic conductor 35a along the third direction D3 are respectively two side edges 30d of the movable contact assembly 30a. Two outer sides of the lower magnetic conductor 35a are respectively connected to the first magnet 611 and the second magnet 621.

[0147] It should be noted that if the lower magnetic conductor 35a has only one second magnetic conductor 35, 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, the first magnet 611 and the second magnet 621 are connected to the outermost sides of the two outermost second magnetic conductors 35 among the multiple second magnetic conductors 35.

[0148] like Figures 10 to 12 As shown, the similarities between the third embodiment of the present application and the above embodiment are not repeated here, and the difference lies in that:

[0149] The movable contact assembly 30a and the contact support 331 are both connected with magnets. The way in which the contact support 331 is provided with magnets can refer to the movable assembly 30 of the first embodiment of the present application, and the way in which the movable contact assembly 30a is provided with magnets can refer to the movable assembly 30 of the second embodiment of the present application, which will not be repeated here.

[0150] In one embodiment, the first magnet 611 located on one side of the moving contact piece 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 moving contact piece 31 is symmetrically arranged with the second magnet 621 on the other side plate 3311 .

[0151] In the embodiment of the present application, 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 side walls 2142; one of the other pair of first magnets 611 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 side walls 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 the other second side wall 2142; one of the other pair of second magnets 621 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 the other second side wall 2142. In the third direction D3, the first magnet 611 and the second magnet 621 at one end of the movable contact piece 31 are arranged alternately, and the first magnet 611 and the second magnet 621 at the other end of the movable contact piece 31 are arranged alternately.

[0152] The two first magnets 611 connected to the moving contact piece 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 moving contact piece 31 are symmetrically arranged with the second magnet 621 on the other side plate 3311 .

[0153] like Fig.13As shown, the similarities between the fourth embodiment of the present application and the first embodiment are not repeated here, and the difference lies in that:

[0154] The contact support 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 one end of the two side plates 3311 away from the mounting seat 332. The two side plates 3311 and the connecting plate 3314 form an inverted U shape. The two side plates 3311 are respectively connected to the first magnet 611 and the second magnet 621.

[0155] The fixing plate 3312 is connected to the mounting seat 332. For example, the push rod 333, the fixing plate 3312 and the mounting seat 332 are integrally formed by injection molding. Both ends of the fixing plate 3312 along the third direction D3 extend out of the outer surface of the mounting seat 332, so that both ends of the fixing plate 3312 are respectively connected to one end of the two side plates 3311 away from the connecting plate 3314.

[0156] In one embodiment, the fixing plate 3312 is provided with protrusions 3312a at both ends along the third direction D3, each side plate 3311 has a mounting hole 3313 penetrating the inner side surface 3311a and the outer side surface 3311b, and the two protrusions 3312a are respectively confined in the two mounting holes 3313.

[0157] In summary, the relay of the embodiment of the present application has at least the following advantages and beneficial effects:

[0158] The relay of the embodiment of the present application can limit the rotation of the moving component 30 around the axis of the moving component 30 by setting the first anti-rotation component 610 and the second anti-rotation component 620, so as to avoid the problem that the contact resistance becomes larger or even becomes non-conductive due to the contact friction between the moving component 30 and the insulating cover 21, thereby ensuring the reliability of the relay operation. At the same time, 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 position of the moving and static contacts, and improving the stability of the contact resistance.

[0159] It is understandable that the various embodiments / implementations provided in the present application can be combined with each other without causing any contradiction, and will not be illustrated one by one here.

[0160] In the application embodiments, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the application embodiments can be understood according to the specific circumstances.

[0161] In the description of the application embodiments, it should be understood that the directions or positional relationships indicated by the terms "up", "down", "left", "right", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the application embodiments and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be understood as a limitation on the application embodiments.

[0162] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the application embodiment. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0163] The above are only preferred embodiments of the application embodiments and are not intended to limit the application embodiments. For those skilled in the art, the application embodiments may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application embodiments shall be included in the protection scope of the application embodiments.

Claims

1. A relay, characterized in that: include: A pair of stationary contacts; A moving assembly, used for contacting or separating with the pair of stationary contacts; an insulating cover, to which the pair of static contacts are connected; A first anti-rotation component comprises at least one pair of first magnets, wherein one of the first magnets in each pair is connected to the moving component, and the other first magnet is fixedly arranged 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 paired second magnets; the first magnetic force and the second magnetic force are used to limit the rotation of the moving component around the axis of the moving component.

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

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

4. The relay according to claim 2, characterized in that: When the first magnetic force and the second magnetic force are both attractive forces, another of the first magnets is fixedly connected to the outer wall surface of the insulating cover, and another of the second magnets 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 two sides of the moving component along the third direction; The arrangement direction of the pair of static contacts is defined as a first direction, the movement direction of the dynamic component is defined as a second direction, and the first direction, the second direction and the third direction are 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 a target plane have overlapping first projections, and the orthographic projections of the two second magnets in a pair on the target plane have overlapping second projections; Wherein, the target plane is parallel to the moving direction of the moving component.

7. The relay according to claim 6, characterized in that: The arrangement direction of the pair of static contacts is defined as a first direction, the movement direction of the dynamic 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 perpendicular to each other; 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 powered off or on, the orthographic projections of the two first magnets in a pair on the target plane both have overlapping first projections, and the orthographic projections of the two second magnets in a pair on the target plane both have overlapping second projections.

9. The relay according to claim 1, characterized in that: The first anti-rotation component and the second anti-rotation component are symmetrically arranged 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 to 11, characterized in that: The moving assembly includes a contact support; The first magnet of the first anti-rotation assembly is connected to the contact bracket, and the second magnet of the second anti-rotation assembly is connected to the contact bracket.

13. The relay according to claim 12, characterized in that: The contact support includes two side plates arranged at intervals, and the two side plates 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 side surface or the outer side surface of one of the side plates, and the second magnet is connected to the inner side surface or the outer side surface of the other side plate.

15. The relay according to any one of claims 1 to 11, characterized in that: The movable assembly includes a movable contact assembly for contacting or separating with a pair of the stationary contacts; The movable contact component has two side edges arranged in opposite directions, one of the side edges is connected to at least one of the first magnets, and the other of the side edges is connected to at least one of the second magnets.

16. The relay according to claim 15, characterized in that The movable assembly further includes a contact bracket, the movable contact assembly is arranged in a space surrounded by the contact bracket, and includes a movable contact piece for contacting or separating with a pair of the stationary contacts; Both ends of the moving contact piece in the length direction are connected to the first magnet and the second magnet, and the first magnet and the second magnet are located outside the contact bracket.

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

18. The relay according to any one of claims 1 to 11, characterized in that: The movable assembly includes a movable contact assembly and a contact bracket, wherein the movable contact assembly is arranged in the space surrounded by the contact bracket and is used to contact or separate with a pair of the static contacts; the contact bracket includes two side plates arranged at intervals, and the movable contact assembly has two side edges arranged in opposite directions; The first anti-rotation assembly includes at least two pairs of the first magnets, one of the side plates is connected to at least one of the first magnets, and one of the side edges is connected to at least one of the first magnets; The second anti-rotation component includes at least two pairs of the second magnets, another of the side plates is connected to at least one of the second magnets, and another of the side edges is connected to at least one of the second magnets.

19. The relay according to claim 18, characterized in that The side plate has an inner side surface facing the movable contact assembly and an outer side surface disposed opposite to the inner side surface along a thickness direction of the side plate; The first magnet is connected to the inner side surface or the outer side surface of one of the side plates, and the second magnet is connected to the inner side surface or the outer side surface 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 with a pair of the stationary contacts; Both ends of the moving contact piece in the length direction are connected to the first magnet and the second magnet, and the first magnet and the second magnet are located outside the contact bracket.

21. The relay according to claim 20, characterized in that The first magnet located on one side of the moving contact piece is symmetrically arranged with 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 to 11, characterized in that: The insulating cover comprises: A top wall connected to a pair of static contacts; and The cylindrical side wall is connected to the outer periphery of the top wall.

23. The relay according to claim 22, characterized in that The cylindrical side wall further includes two first side walls and two second side walls, the two first side walls are arranged opposite to each other along a first direction, the two second side walls are arranged opposite to each other along a third direction, and the two first side walls and the two second side walls are sequentially connected end to end to form an annular structure; The arrangement direction of the pair of static contacts is defined as the first direction, the movement direction of the dynamic component is defined as the second direction, and the first direction, the second direction and the third direction are perpendicular to each other.

24. The relay according to claim 1, characterized in that The movable assembly includes a movable contact assembly, a push rod, a mounting seat and a contact bracket, wherein the mounting seat is connected to one axial end of the push rod, the contact bracket is connected to the mounting seat, and the movable contact assembly is arranged in a space surrounded by the contact bracket and is used to contact or separate with a pair of the stationary contacts; The movable assembly further includes a first elastic member, which is located between the mounting seat and the movable contact assembly and is used to provide an elastic force for the movable contact assembly to move toward the stationary contact.

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