A relay

Abstract

The application discloses a relay, and belongs to the technical field of electric appliance switches. The relay comprises a first shell, an electromagnetic structure, a moving contact structure and a stationary contact. The electromagnetic structure and the stationary contact are both fixed in the first shell. The electromagnetic structure is provided with two first magnetic parts which are spaced apart along a first direction. The moving contact structure is slidably arranged in the first shell along a second direction. The moving contact structure comprises a moving contact, a first moving magnetic part and a second moving magnetic part which are sequentially and spaced apart along the second direction. The magnetic poles of the first moving magnetic part and the second moving magnetic part are opposite. When a forward current is input into the electromagnetic structure, the two first magnetic parts are both attracted to the first moving magnetic part, and the moving contact and the stationary contact are separated. When a reverse current is input into the electromagnetic structure, the two first magnetic parts are both attracted to the second moving magnetic part, and the moving contact and the stationary contact are in contact. The relay provided by the application is beneficial to increasing the opening distance between the moving contact and the stationary contact, and reducing the risk of electric leakage from the moving contact and the stationary contact to the electromagnetic structure.

Description

Technical Field

[0001] This invention relates to the field of electrical switch technology, and more particularly to a relay. Background Technology

[0002] Magnetic latching relays are a new type of relay developed in recent years. Like other electromagnetic relays, they automatically connect and disconnect circuits. However, unlike other electromagnetic relays, the normally closed or normally open state of a magnetic latching relay depends entirely on the permanent magnet structure, and its switching state is triggered by a pulse electrical signal of a certain width.

[0003] In related technologies, the permanent magnet structure in a magnetic latching relay is a swing-type design. This means the permanent magnet structure is rotatably housed within the first housing. When a pulse voltage is applied to the electromagnetic structure of the magnetic latching relay, the magnetic field generated by the electromagnetic structure causes the permanent magnet structure to swing, thus keeping the magnetic latching relay in a closed or open state. However, the swing-type permanent magnet design typically limits the opening distance of the magnetic latching relay to between 1.5mm and 3mm. Since the rated voltage on the DC side of a charging pile needs to be 1000VDC, and the impulse withstand voltage is limited to 6KV, with a minimum electrical clearance of 5.5mm corresponding to the 6KV impulse withstand voltage, it is difficult for magnetic latching relays with a swing-type permanent magnet structure to meet the requirements of charging piles. Summary of the Invention

[0004] The purpose of this invention is to provide a relay that is advantageous for increasing the opening distance.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A relay is provided, comprising:

[0007] First shell;

[0008] An electromagnetic structure is fixed inside the first housing, and the electromagnetic structure is provided with two first magnetic parts spaced apart along a first direction.

[0009] A movable contact structure is slidably disposed within the first housing along a second direction. The movable contact structure includes a movable contact, a first movable magnetic component, and a second movable magnetic component arranged sequentially at intervals along the second direction. The magnetic poles of the first movable magnetic component and the second movable magnetic component are oriented in opposite directions.

[0010] The stationary contact is fixed inside the first housing and located on the side of the moving contact structure away from the electromagnetic structure;

[0011] When a positive current is applied to the electromagnetic structure, the moving contact structure slides to the first position, and both first magnetic parts attract and merge with the first moving magnetic component to form a first magnetic circuit, and the moving contact and the stationary contact separate.

[0012] When the electromagnetic structure is connected with reverse current, the moving contact structure slides to a second position, both of the first magnetic parts are attracted by the second moving magnet and form a second magnetic circuit, and the moving contact and the static contact abut.

[0013] Optionally, the moving contact structure further comprises an insulating support, the first moving magnet and the second moving magnet are embedded in the insulating support, and the part of the first moving magnet attracted by the first magnetic part and the part of the second moving magnet attracted by the first magnetic part are both protruding from the insulating support, and the moving contact is arranged outside the insulating support.

[0014] Optionally, the moving contact structure further comprises a contact support and an elastic member, the contact support is connected with the insulating support, the moving contact and the elastic member are both arranged between the insulating support and the contact support, and the elastic member can press the moving contact on the contact support.

[0015] Optionally, the moving contact structure further comprises a clamping plate, the clamping plate is embedded in the insulating support, and both ends of the clamping plate protrude from the insulating support, the contact support comprises two connecting arms, and the two connecting arms are clamped with both ends of the clamping plate one by one.

[0016] And / or, the contact support comprises a top plate, the top plate is provided with a first protruding part on both sides along a third direction, the moving contact structure further comprises two sliding caps, the first shell is provided with two first sliding grooves, the first protruding part, the sliding cap and the first sliding groove are arranged one by one, the sliding cap is sleeved on the corresponding first protruding part, and the sliding cap is slidingly arranged in the corresponding first sliding groove.

[0017] And / or, the insulating support is provided with a second protruding part on both sides along the third direction, the first shell is provided with two second sliding grooves, the second protruding part and the second sliding groove are arranged one by one, and the second protruding part is slidingly arranged in the corresponding second sliding groove.

[0018] Optionally, the first moving magnet comprises a first permanent magnet block and two first armatures, and the two ends of the first permanent magnet block along the first direction and the two first armatures are connected one by one.

[0019] The second moving magnet comprises a second permanent magnet block and two second armatures, the two ends of the second permanent magnet block along the first direction and the two second armatures are connected one by one, and the magnetic poles of the first permanent magnet block and the second permanent magnet block are opposite.

[0020] The first magnetic part, the first armature and the second armature are arranged one by one in correspondence, and the first magnetic part is located between the corresponding first armature and the second armature along the second direction;

[0021] When the electromagnetic structure passes through a forward current, the first magnetic part attracts the corresponding first armature;

[0022] When the electromagnetic structure passes through a reverse current, the first magnetic part attracts the corresponding second armature.

[0023] Optionally, the first permanent magnet block is provided in a U-shaped form, the first armature is provided in a flat plate form, and two ends of the first permanent magnet block are respectively fitted with one side surface of the corresponding first armature;

[0024] Or, the first permanent magnet block is provided in a prismatic or cylindrical form, the first armature includes a first plate part and a second plate part arranged at an included angle, the first permanent magnet block is clamped between the first plate parts of the two first armatures, and the first armature can be attracted to the corresponding first magnetic part through the second plate part.

[0025] Optionally, the second permanent magnet block is provided in a U-shaped form, the second armature is provided in a flat plate form, and two ends of the second permanent magnet block are respectively fitted with one side surface of the corresponding second armature;

[0026] Or, the second permanent magnet block is provided in a prismatic or cylindrical form, the second armature includes a third plate part and a fourth plate part arranged at an included angle, the second permanent magnet block is clamped between the third plate parts of the two second armatures, and the second armature can be attracted to the corresponding first magnetic part through the fourth plate part.

[0027] Optionally, one end of the first armature is provided with a first slot, and two ends of the first permanent magnet block are respectively inserted into the first slot of the corresponding first armature;

[0028] And / or, one end of the second armature is provided with a second slot, and two ends of the second permanent magnet block are respectively inserted into the second slot of the corresponding second armature.

[0029] Optionally, the electromagnetic structure includes:

[0030] A coil;

[0031] A static core penetrating the coil;

[0032] Two magnetic yokes including the first magnetic part and the second magnetic part arranged at an included angle, and the second magnetic parts of the two magnetic yokes are connected to the two ends of the static core one by one.

[0033] Optionally, the relay further comprises an arc extinguishing member, the arc extinguishing member is arranged in the first housing, and the arc extinguishing member is located on a side of the fixed contact head facing the movable contact head.

[0034] Optionally, the relay further comprises:

[0035] a first contact head fixed on the first housing;

[0036] a second contact head fixed on the first housing;

[0037] a first elastic sheet connected with the second contact head, the first elastic sheet is located between the first contact head and the first movable magnetic piece in the second direction;

[0038] When the first magnetic part is attracted to the first movable magnetic piece, the first movable magnetic piece is separated from the first elastic sheet, and the first elastic sheet is separated from the first contact head;

[0039] When the first magnetic part is attracted to the second movable magnetic piece, the first movable magnetic piece, the first elastic sheet and the first contact head are sequentially abutted.

[0040] Optionally, when the movable contact structure slides from the first position to the second position, the contact between the first elastic sheet and the first contact head precedes the contact between the movable contact head and the fixed contact head.

[0041] Optionally, the relay further comprises:

[0042] two third contact heads fixed on the first housing;

[0043] a second elastic sheet arranged on the movable contact structure;

[0044] When the first magnetic part is attracted to the first movable magnetic piece, both the third contact heads are abutted with the second elastic sheet;

[0045] When the first magnetic part is attracted to the second movable magnetic piece, both the third contact heads are separated from the second elastic sheet.

[0046] Beneficial effects: When both the first magnetic parts are attracted to the second movable magnetic piece, the electromagnetic structure passes through the forward current, which will attract the two first magnetic parts to the first movable magnetic piece, and because the magnetic poles of the first movable magnetic piece and the second movable magnetic piece are opposite, the two first magnetic parts will repel the second movable magnetic piece, helping to attract the two first magnetic parts to the first movable magnetic piece, and the movable contact structure slides to the first position relative to the first housing to separate the movable contact head and the fixed contact head.

[0047] When the two first magnetic parts are attracted to the first moving magnet, the electromagnetic structure is connected to the reverse current, which will make the two first magnetic parts and the second moving magnet attract each other, and because the magnetic poles of the first moving magnet and the second moving magnet are opposite, the two first magnetic parts will repel the first moving magnet, helping the two first magnetic parts to attract the second moving magnet, and the moving contact structure slides relative to the first shell to the second position to make the moving contact and the static contact abut;

[0048] Wherein, the repulsion of the two first magnetic parts and the second moving magnet can help the two first magnetic parts to attract the first moving magnet, and the repulsion of the two first magnetic parts and the first moving magnet can help the two first magnetic parts to attract the second moving magnet, which is beneficial to improve the stability of the relay, and is beneficial to increase the opening distance between the moving contact and the static contact, so that the relay is suitable for charging piles. In addition, the abutment of the moving contact and the static contact may have the risk of electric leakage to the first moving magnet, and the first moving magnet and the second moving magnet are spaced apart, i.e. the first moving magnet and the second moving magnet do not contact each other, which is beneficial to reduce the risk of the electromagnetic structure, the first moving magnet and the second moving magnet being sequentially turned on when the two first magnetic parts attract the second moving magnet, thereby reducing the risk of the moving contact and the static contact being turned on and electrically leaking to the electromagnetic structure, and is beneficial to improve the safety of the relay in use. BRIEF DESCRIPTION OF DRAWINGS

[0049] Figure 1 is the first moving magnet and the first magnetic part provided by the application when the first permanent magnet block and the second permanent magnet block are U-shaped, and the attraction schematic diagram is shown;

[0050] Figure 2 is the second moving magnet and the first magnetic part provided by the application when the first permanent magnet block and the second permanent magnet block are U-shaped, and the attraction schematic diagram is shown;

[0051] Figure 3 is the structure schematic diagram in the shell body provided by the application;

[0052] Figure 4 is the structure schematic diagram of the first shell provided by the application;

[0053] Figure 5 is the first moving magnet and the first magnetic part provided by the application when the first permanent magnet block and the second permanent magnet block are cuboid-shaped, and the attraction schematic diagram is shown;

[0054] Figure 6 is the first moving magnet and the first magnetic part provided by the application when the first permanent magnet block and the second permanent magnet block are cylindrical-shaped, and the attraction schematic diagram is shown;

[0055] Figure 7 is the first moving magnet and the first magnetic part provided by the application when the first permanent magnet block and the second permanent magnet block are hexagonal prism-shaped, and the attraction schematic diagram is shown;

[0056] Figure 8is the schematic diagram of the attraction of the first moving magnet and the first magnetic part when the first armature and the second armature provided by the application are provided with the insertion slot;

[0057] Figure 9 is the schematic diagram of the structure of the relay at the supporting structure provided by the application;

[0058] Figure 10 is the schematic diagram of the structure of the moving contact provided by the application;

[0059] Figure 11 is the schematic diagram of the structure of the cover plate provided by the application;

[0060] Figure 12 is the schematic diagram of the structure of the electromagnetic structure provided by the application;

[0061] Figure 13 is the schematic diagram of the structure of the relay provided by the application;

[0062] Figure 14 is the enlarged view of the partial structure of the relay provided by the application.

[0063] In the figure:

[0064] 100, first shell; 101, accommodating cavity; 102, first sliding slot; 103, second sliding slot; 104, mounting slot; 110, shell body; 120, cover plate;

[0065] 200, electromagnetic structure; 210, coil; 211, lead-out pin; 220, static core; 230, magnetic yoke; 231, first magnetic part; 232, second magnetic part; 240, base;

[0066] 300, moving contact structure; 310, moving contact head; 311, moving contact point; 320, first moving magnet; 321, first permanent magnet block; 322, first armature; 3221, first plate part; 3222, second plate part; 3223, first insertion slot; 3224, first plate segment; 3225, second plate segment; 3226, third plate segment; 3227, fourth plate segment; 330, second moving magnet; 331, second permanent magnet block; 332, second armature; 3321, third plate part; 3322, fourth plate part; 3323, second insertion slot; 340, insulating support; 341, second protruding part; 342, convex strip; 350, contact support; 351, connecting arm; 3511, through hole; 3512, convex bump; 352, top plate; 353, first protruding part; 360, elastic member; 370, through slot; 380, clamping plate; 390, sliding cap;

[0067] 400, static contact; 410, static contact point;

[0068] 500, arc extinguishing member;

[0069] 610, first contact; 620, second contact; 630, first elastic sheet;

[0070] 710, third contact; 711, contact rod; 720, second elastic sheet;

[0071] 800, second housing. DETAILED DESCRIPTION

[0072] The application will be further described below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are intended to be merely illustrative of the application and not in limitation thereof. It should also be noted that, for the purpose of clarity, only those structures related to the application are shown in the drawings.

[0073] In the description of the application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0074] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "lower", "lower" and "lower" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0075] In the description of the present embodiment, the terms "upper", "lower", "right", and other orientation or position relationships are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0076] Reference Figures 1 to 3 As shown in the drawings, the present embodiment provides a relay, which comprises a first housing 100, an electromagnetic structure 200, a movable contact structure 300 and a stationary contact 400.

[0077] The electromagnetic structure 200 and the static contact 400 are fixed in the first housing 100. The electromagnetic structure 200 is provided with two first magnetic parts 231 spaced apart along a first direction. The moving contact structure 300 is slidably arranged in the first housing 100 along a second direction, and includes a moving contact 310, a first moving magnetic piece 320 and a second moving magnetic piece 330 spaced apart along the second direction in sequence. The magnetic poles of the first moving magnetic piece 320 and the second moving magnetic piece 330 are opposite to each other. The static contact 400 is located on a side of the moving contact structure 300 away from the electromagnetic structure 200. For example, the first direction and the second direction are arranged at an angle, for example, perpendicular to each other.

[0078] When the electromagnetic structure 200 is supplied with a forward current, the moving contact structure 300 slides to a first position, both of the first magnetic parts 231 are attracted to the first moving magnetic piece 320 and form a first magnetic circuit, and the moving contact 310 and the static contact 400 are separated.

[0079] When the electromagnetic structure 200 is supplied with a reverse current, the moving contact structure 300 slides to a second position, both of the first magnetic parts 231 are attracted to the second moving magnetic piece 330 and form a second magnetic circuit, and the moving contact 310 and the static contact 400 abut.

[0080] For example, the cut-off process of the relay is as follows: when both of the first magnetic parts 231 are attracted to the second moving magnetic piece 330, the electromagnetic structure 200 is supplied with a forward current, which causes both of the first magnetic parts 231 to be attracted to the first moving magnetic piece 320. Because the magnetic poles of the first moving magnetic piece 320 and the second moving magnetic piece 330 are opposite to each other, both of the first magnetic parts 231 are repelled by the second moving magnetic piece 330, which helps to attract both of the first magnetic parts 231 to the first moving magnetic piece 320. The moving contact structure 300 slides relative to the first housing 100 to the first position, so that the moving contact 310 and the static contact 400 are separated.

[0081] For example, the closing process of the relay is as follows: when both of the first magnetic parts 231 are attracted to the first moving magnetic piece 320, the electromagnetic structure 200 is supplied with a reverse current, which causes both of the first magnetic parts 231 to be attracted to the second moving magnetic piece 330. Because the magnetic poles of the first moving magnetic piece 320 and the second moving magnetic piece 330 are opposite to each other, both of the first magnetic parts 231 are repelled by the first moving magnetic piece 320, which helps to attract both of the first magnetic parts 231 to the second moving magnetic piece 330. The moving contact structure 300 slides relative to the first housing 100 to the second position, so that the moving contact 310 and the static contact 400 abut.

[0082] It can be understood that the two first magnetic parts 231 repel the second moving magnet 330 to help the two first magnetic parts 231 attract the first moving magnet 320, and the two first magnetic parts 231 repel the first moving magnet 320 to help the two first magnetic parts 231 attract the second moving magnet 330, which is beneficial to improve the stability of the relay, and is beneficial to increase the opening distance between the moving contact 310 and the static contact 400, so that the relay is suitable for charging piles.

[0083] It can be understood that the moving contact 310 and the static contact 400 are in contact, which may have the risk of electric leakage to the first moving magnet 320. The first moving magnet 320 and the second moving magnet 330 are spaced apart, that is, the first moving magnet 320 and the second moving magnet 330 do not contact each other, which is beneficial to reduce the risk of the electromagnetic structure 200, the first moving magnet 320 and the second moving magnet 330 being sequentially turned on when the two first magnetic parts 231 attract the second moving magnet 330, thereby reducing the risk of the moving contact 310 and the static contact 400 being turned on and electric leakage to the electromagnetic structure 200, and is beneficial to improve the safety of the relay. In some embodiments, the moving contact 310 and the static contact 400 are connected to a high-voltage circuit, and the electromagnetic structure 200 is connected to a low-voltage circuit. The electric leakage of the moving contact 310 and the static contact 400 to the electromagnetic structure 200 will cause damage to the electromagnetic structure 200.

[0084] In the embodiment, referring to Figure 3 and Figure 4 , the first shell 100 includes a shell body 110 and a cover plate 120. The first shell body 110 is provided with a receiving cavity 101, and the cover plate 120 is arranged at the opening of the receiving cavity 101, which facilitates the assembly of the relay. The electromagnetic structure 200, the moving contact structure 300 and the static contact 400 are arranged in the receiving cavity 101.

[0085] In the embodiment, referring to Figure 1 and Figure 2 , the first moving magnet 320 includes a first permanent magnet block 321 and two first armatures 322, and the two ends of the first permanent magnet block 321 along the first direction are connected to the two first armatures 322 one by one. The second moving magnet 330 includes a second permanent magnet block 331 and two second armatures 332, and the two ends of the second permanent magnet block 331 along the first direction are connected to the two second armatures 332 one by one, and the magnetic poles of the first permanent magnet block 321 and the second permanent magnet block 331 are opposite. The first magnetic part 231, the first armature 322 and the second armature 332 are arranged one by one, and the first magnetic part 231 is located between the corresponding first armature 322 and the second armature 332 along the second direction. In the embodiment, when the electromagnetic structure 200 passes through a forward current, the first magnetic part 231 attracts the corresponding first armature 322; when the electromagnetic structure 200 passes through a reverse current, the first magnetic part 231 attracts the corresponding second armature 332.

[0086] It can be understood that when the first magnetic part 231 is attracted to the corresponding first armature 322, the internal magnetic induction lines of the first permanent magnet 321 flow from the S pole to the N pole, and then flow to the first armature 322 connected to the N pole of the first permanent magnet 321, the electromagnetic structure 200, the first armature 322 connected to the S pole of the first permanent magnet 321, and form a first magnetic circuit. Wherein, the first magnetic circuit can be represented by the dashed line in Figure 1 . Wherein, the S pole of the first permanent magnet 321 is set as the first end of the first permanent magnet 321, and the N pole of the first permanent magnet 321 is set as the second end of the first permanent magnet 321. At this time, the electromagnetic structure 200 passes through a reverse current, the electromagnetic structure 200 generates a magnetic field opposite to the direction of the internal magnetic induction lines of the first permanent magnet 321, and the magnetic field is the same as the direction of the internal magnetic induction lines of the second permanent magnet 331. The first magnetic part 231 repels the first armature 322 and is attracted to the second armature 332, thereby realizing the connection of the relay and being stable and reliable.

[0087] It can be understood that when the first magnetic part 231 is attracted to the corresponding second armature 332, the internal magnetic induction lines of the second permanent magnet 331 flow from the S pole to the N pole, and then flow to the second armature 332 connected to the N pole of the second permanent magnet 331, the electromagnetic structure 200, the second armature 332 connected to the S pole of the second permanent magnet 331, and form a second magnetic circuit. Wherein, the first magnetic circuit can be represented by the dashed line in Figure 2 . Wherein, the N pole of the second permanent magnet 331 is set as the first end of the first permanent magnet 321, and the S pole of the first permanent magnet 321 is set as the second end of the first permanent magnet 321. The first end of the first permanent magnet 321 and the first end of the second permanent magnet 331 are located on the same side, and the second end of the first permanent magnet 321 and the second end of the second permanent magnet 331 are located on the same side. At this time, the electromagnetic structure 200 passes through a forward current, the electromagnetic structure 200 generates a magnetic field opposite to the direction of the internal magnetic induction lines of the second permanent magnet 331, and the magnetic field is the same as the direction of the internal magnetic induction lines of the first permanent magnet 321. The first magnetic part 231 repels the second armature 332 and is attracted to the first armature 322, thereby realizing the connection of the relay and being stable and reliable.

[0088] In the present embodiment, as shown in Figure 1 , Figures 5 to 8 , the shape of the first permanent magnet 321 includes but is not limited to a prism shape, a cylindrical shape or a U-shaped shape. Wherein, the prism shape includes but is not limited to a cuboid shape or a hexagonal prism shape.

[0089] In a feasible implementation manner, the first permanent magnet 321 is set as a U-shaped shape, the first armature 322 is set as a flat plate shape, and the two ends of the first permanent magnet 321 are respectively attached to one side of the corresponding first armature 322. Exemplarily, the first moving magnetic piece 320 is in a U-shaped shape.

[0090] In a feasible implementation, the first permanent magnet block 321 is provided in a prismatic or cylindrical shape. The first armature 322 includes a first plate portion 3221 and a second plate portion 3222 arranged at an angle. The first permanent magnet block 321 is clamped between the first plate portions 3221 of two first armatures 322. The first armature 322 can be attracted to the corresponding first magnetic portion 231 through the second plate portion 3222. Herein, the second plate portion 3222 extends in a direction away from the first permanent magnet block 321. Exemplarily, the first moving magnetic member 320 is in a shape of a Chinese character 'ji'.

[0091] Exemplarily, the first plate portion 3221 and the second plate portion 3222 are perpendicular to each other.

[0092] In some embodiments, as Figure 8 shown, one end of the first armature 322 is provided with a first slot 3223. Both ends of the first permanent magnet block 321 are respectively inserted into the first slots 3223 of the corresponding first armatures 322, which is beneficial to improving the connection stability between the first armature 322 and the first permanent magnet block 321. Exemplarily, for the convenience of forming the first slot 3223, the first armature 322 can be formed by bending a plate. For example, the first armature 322 includes a first plate segment 3224, a second plate segment 3225, a third plate segment 3226, and a fourth plate segment 3227 that are bent in sequence. The first plate segment 3224, the second plate segment 3225, and the fourth plate segment 3227 are parallel to each other. The second plate segment 3225 and the third plate segment 3226 are perpendicular to each other. The first slot 3223 is formed by enclosing the first plate segment 3224, the third plate segment 3226, and the fourth plate segment 3227. The second plate segment 3225 is used to be attracted to the first magnetic portion 231. Exemplarily, the first moving magnetic member 320 is in a shape of a Chinese character 'ji'. In this embodiment, the first permanent magnet block 321 is provided in a prismatic or cylindrical shape. Of course, in this embodiment, the first permanent magnet block 321 can also be provided in a U shape or other shapes, which is not limited in this implementation.

[0093] It can be understood that the first moving magnetic member 320 is in a shape of a Chinese character 'ji', which is beneficial to increasing the distance between the part where the first armature 322 is attracted to the first magnetic portion 231 and the part where the second armature 332 is attracted to the first magnetic portion 231, and thus is beneficial to increasing the opening distance between the moving contact 310 and the static contact 400.

[0094] In this embodiment, referring to Figure 1 、 Figures 5 to 8 shown, the shape of the second permanent magnet block 331 includes but is not limited to a prismatic shape, a cylindrical shape, or a U shape.

[0095] In a feasible implementation, the second permanent magnet block 331 is provided in a U shape, the second armature 332 is provided in a flat plate shape, and both ends of the second permanent magnet block 331 are respectively adhered to one side surface of the corresponding second armature 332. Exemplarily, the second moving magnetic member 330 is in a shape of a Chinese character 'ji'.

[0096] In an embodiment, the second permanent magnet 331 is prismatic or cylindrical, the second armature 332 includes a third plate portion 3321 and a fourth plate portion 3322 arranged at an angle, and the second permanent magnet 331 is clamped between the third plate portions 3321 of the two second armatures 332, and the second armature 332 can be attracted to the corresponding first magnetic portion 231 through the fourth plate portion 3322. For example, the fourth plate portion 3322 extends away from the second permanent magnet 331. For example, the second moving magnet 330 is in the shape of a U.

[0097] For example, the third plate portion 3321 and the fourth plate portion 3322 are perpendicular to each other.

[0098] In some embodiments, as shown in Figure 8 For example, one end of the second armature 332 is provided with a second slot 3323, and the two ends of the second permanent magnet 331 are respectively inserted into the second slots 3323 of the corresponding second armatures 332, which is beneficial to improve the connection stability of the second armature 332 and the second permanent magnet 331. For example, the second armature 332 can be formed by bending a plate material, and the forming method is the same as that of the first armature 322, and thus will not be described in detail in this embodiment. For example, the second moving magnet 330 is in the shape of a U. In this embodiment, the second permanent magnet 331 is prismatic or cylindrical. Of course, in this embodiment, the second permanent magnet 331 can also be in the shape of a U or other shapes, and the present embodiment is not limited thereto.

[0099] It can be understood that the second moving magnet 330 is in the shape of a U, which is beneficial to increase the distance between the part of the first armature 322 attracted to the first magnetic portion 231 and the part of the second armature 332 attracted to the first magnetic portion 231, and thus is beneficial to increase the distance between the moving contact 310 and the stationary contact 400.

[0100] For example, the first moving magnet 320 in the shape of a U is inverted, and the second moving magnet 330 in the shape of a U is upright, so as to maximize the distance between the part of the first armature 322 attracted to the first magnetic portion 231 and the part of the second armature 332 attracted to the first magnetic portion 231. The first moving magnet 320 and the second moving magnet 330 can be arranged in a symmetrical manner.

[0101] In this embodiment, as shown in Figure 1 , Figures 9 to 11 For example, the support structure is in sliding connection with the first housing 100.

[0102] In an embodiment, the moving contact structure 300 further comprises an insulating support 340, wherein the insulating support 340 is part of the support structure. The first moving magnet 320 and the second moving magnet 330 are embedded in the insulating support 340, so that the first moving magnet 320 and the second moving magnet 330 are kept at a stable distance, and the risk of conduction between the first moving magnet 320 and the second moving magnet 330 is reduced, and the risk of conduction between the moving contact 310 and the static contact 400 and leakage to the electromagnetic structure 200 is reduced. The moving contact 310 is arranged outside the insulating support 340, so that the risk of conduction between the first moving magnet 320 and the second moving magnet 330 and the moving contact 310 is reduced, and the risk of conduction between the moving contact 310 and the static contact 400 and leakage to the electromagnetic structure 200 is reduced. It can be understood that the insulating support 340 is made of an insulating material. The part of the first moving magnet 320 attracted to the first magnetic part 231 and the part of the second moving magnet 330 attracted to the first magnetic part 231 protrude from the insulating support 340, so that the stability of the attraction between the first moving magnet 320 and the first magnetic part 231 is improved, and the stability of the attraction between the second moving magnet 330 and the first magnetic part 231 is improved.

[0103] For example, the first permanent magnet 321 and the second permanent magnet 331 are embedded in the insulating support 340, and the part of the first armature 322 attracted to the first magnetic part 231 and the part of the second armature 332 attracted to the first magnetic part 231 protrude from the insulating support 340.

[0104] In an embodiment, the moving contact structure 300 further comprises a contact support 350 and an elastic member 360, wherein the contact support 350 is part of the support structure. The contact support 350 is connected to the insulating support 340, and the moving contact 310 and the elastic member 360 are arranged between the insulating support 340 and the contact support 350, and the elastic member 360 can press the moving contact 310 against the contact support 350, facilitating assembly. In this embodiment, the elastic member 360 can buffer the impact between the moving contact 310 and the static contact 400, so that the service life of the relay is improved.

[0105] For example, the contact support 350 can be made of metal.

[0106] For example, the elastic member 360 can be a spring.

[0107] Exemplarily, the movable contact 310 can be provided in a bridge structure, i.e., the movable contact 310 has two movable contact points 311. Wherein, the relay includes two static contacts 400, the static contact 400 has a static contact point 410, and the two movable contact points 311 are arranged one by one corresponding to the two static contact points 410, the movable contact point 311 of the movable contact 310 is in contact or separated from the corresponding static contact point 410 of the static contact 400, so as to realize the on-off of the relay.

[0108] In a feasible implementation, a through slot 370 is formed between the contact support 350 and the insulating support 340, the movable contact 310 is arranged through the through slot 370, the elastic member 360 is arranged in the through slot 370, and the first end of the elastic member 360 is in contact with the insulating support 340, the second end of the elastic member 360 is in contact with the movable contact 310, and the elastic member 360 can press the movable contact 310 on the contact support 350. Wherein, the through slot 370 is arranged, which is beneficial to improve the installation stability of the movable contact 310.

[0109] Exemplarily, the insulating support 340 and the contact support 350 are detachably connected, which is convenient for assembling the movable contact structure 300.

[0110] In a feasible implementation, the contact support 350 includes two connecting arms 351, and the two connecting arms 351 are detachably connected with the insulating support 340. In some embodiments, the movable contact structure 300 further includes a clamping plate 380, the clamping plate 380 is embedded in the insulating support 340, and the two ends of the clamping plate 380 protrude out of the insulating support 340, the two connecting arms 351 are clamped one by one corresponding to the two ends of the clamping plate 380, which is stable and reliable. Wherein, the clamping plate 380 can be made of metal material, which has good structural strength and stability. Wherein, the connecting arm 351 is provided with a clamping groove which can be clamped with the clamping plate 380.

[0111] Exemplarily, the clamping plate 380 is located on the side of the second movable magnetic member 330 away from the first movable magnetic member 320, and the clamping plate 380 is spaced apart from the first movable magnetic member 320, i.e., the clamping plate 380 does not contact the first movable magnetic member 320, which is beneficial to reduce the risk of the contact support 350 being conducted with the first movable magnetic member 320 through the clamping plate 380, and further reduce the risk of the movable contact 310 and the static contact 400 being conducted and leaking to the electromagnetic structure 200.

[0112] In a feasible implementation, as Figure 3 , Figure 10 and Figure 11As shown, the contact support 350 includes a top plate 352, the top plate 352 is provided with a first protruding part 353 on both sides along the third direction, the movable contact structure 300 further includes two sliding caps 390, the first shell 100 is provided with two first sliding grooves 102, the first protruding part 353, the sliding cap 390 and the first sliding groove 102 are correspondingly arranged, the sliding cap 390 is sleeved on the corresponding first protruding part 353, and the sliding cap 390 is slidably arranged in the corresponding first sliding groove 102, which is beneficial to improve the sliding stability of the movable contact structure 300. Wherein, the first direction, the second direction and the third direction can be perpendicular to each other. Wherein, the first protruding part 353 is arranged, which facilitates the molding of the contact support 350 and facilitates the installation of the sliding cap 390.

[0113] Exemplarily, one first sliding groove 102 is arranged on the shell body 110, and the other first sliding groove 102 is arranged on the cover plate 120.

[0114] In the embodiment, the two connecting arms 351 are connected to the opposite sides of the top plate 352 correspondingly. Wherein, the contact support 350 can be formed by bending, for example, stamping and bending. It can be understood that the through slot 370 is formed on the inner side of the top plate 352 and the two connecting arms 351. Wherein, the elastic member 360 can press the movable contact 310 against the inner side of the top plate 352.

[0115] Exemplarily, the connecting arm 351 is provided with a through hole 3511, the through hole 3511 extends to the top plate 352, and the through hole 3511 is provided with a protruding part on the hole wall of the top plate 352, which facilitates the molding of the contact support 350.

[0116] Exemplarily, the outer side of the connecting arm 351 is provided with a convex 3512, which can abut against the first shell 100, which is beneficial to improve the sliding stability of the movable contact structure 300, and effectively reduces the risk of separation of the insulating support 340 and the contact support 350. Of course, the convex 3512 and the first shell 100 can also be gap fit to reduce the influence of friction on the sliding of the movable contact structure 300. Wherein, the gap between the convex 3512 and the first shell 100 is less than or equal to 2mm, for example, 0.5mm, 1mm or 1.5mm.

[0117] In a feasible implementation manner, as shown in Figure 10 and Figure 11 As shown, the insulating support 340 is provided with a second protruding part 341 on both sides along the third direction, the first shell 100 is provided with two second sliding grooves 103, the second protruding part 341 and the second sliding groove 103 are correspondingly arranged, and the second protruding part 341 is slidably arranged in the corresponding second sliding groove 103, which is beneficial to improve the sliding stability of the movable contact structure 300.

[0118] Exemplarily, one second sliding groove 103 is arranged on the shell body 110, and the other second sliding groove 103 is arranged on the cover plate 120.

[0119] Exemplarily, two first protrusions (not shown) are arranged on the shell body 110, and the second sliding groove 103 is formed between the two first protrusions.

[0120] Exemplarily, two second protrusions (not shown) are arranged on the cover plate 120, and the second sliding groove 103 is formed between the two second protrusions.

[0121] In a feasible implementation, as shown in Figure 10 The insulating support 340 is further provided with two protrusions 342 on both sides in the third direction, and the protrusions 342 are in sliding contact with the first shell 100. The second protruding portion 341 is located between the two protrusions 342 in the first direction. The peripheral portion of the protrusion 342 can be in an arc shape.

[0122] In the embodiment, as shown in Figure 12 The electromagnetic structure 200 includes a coil 210, a static core 220, and a magnetic yoke 230. The static core 220 is arranged in the coil 210, and the magnetic yoke 230 includes two first magnetic portions 231 and two second magnetic portions 232. The second magnetic portions 232 of the two magnetic yokes 230 are connected to the two ends of the static core 220, respectively. In the embodiment, the coil 210 is supplied with a forward current, and the magnetic field generated by the electromagnetic structure 200 magnetically attracts the first moving magnetic member 320 and repels the second moving magnetic member 330. The coil 210 is supplied with a reverse current, and the magnetic field generated by the electromagnetic structure 200 magnetically repels the first moving magnetic member 320 and attracts the second moving magnetic member 330, which is stable and reliable. The magnetic yoke 230 includes the first magnetic portions 231 and the second magnetic portions 232 arranged at an angle, which is beneficial to improving the compactness of the relay. The coil 210 can be electrically connected to an external power supply through a lead pin 211, and the external power supply is used to supply power to the coil 210.

[0123] Exemplarily, the first magnetic portions 231 and the second magnetic portions 232 are perpendicular to each other.

[0124] Exemplarily, the electromagnetic structure 200 further includes a base 240, and the magnetic yoke 230 and the coil 210 are arranged on the base 240. It can be understood that the electromagnetic structure 200 is fixed in the first shell 100 through the base 240.

[0125] In the embodiment, as shown in Figure 3As shown, the relay further comprises an arc extinguishing member 500, which is arranged in the first housing 100 and located on the side of the static contact 400 facing the moving contact 310. In this embodiment, the arc extinguishing member 500 can elongate the arc generated when the static contact 400 and the moving contact 310 are separated and combined, which is conducive to the extinction of the arc.

[0126] Exemplarily, the arc extinguishing member 500 can be a magnetic steel.

[0127] Exemplarily, two arc extinguishing members 500 are arranged along the first direction and the moving contact 310 is located between the two arc extinguishing members 500 along the first direction.

[0128] Exemplarily, the first housing 100 is provided with a mounting groove 104 capable of accommodating the arc extinguishing member 500, for example, the mounting groove 104 is arranged on the shell body 110.

[0129] In this embodiment, referring to Figure 3 and Figure 9 As shown, the relay further comprises a first contact 610, a second contact 620 and a first elastic sheet 630. The first contact 610 and the second contact 620 are both fixed on the first housing 100, the first elastic sheet 630 is connected with the second contact 620, and the first elastic sheet 630 is located between the first contact 610 and the first moving magnet 320 along the second direction. When the first magnetic part 231 is attracted to the first moving magnet 320, the first moving magnet 320 is separated from the first elastic sheet 630, and the first elastic sheet 630 is separated from the first contact 610. When the first magnetic part 231 is attracted to the second moving magnet 330, the first moving magnet 320, the first elastic sheet 630 and the first contact 610 are sequentially abutted. In this embodiment, the arrangement of the first contact 610, the second contact 620 and the first elastic sheet 630 can expand the function of the relay, which is conducive to improving the applicability of the relay. In addition, the first moving magnet 320 is spaced apart from the second moving magnet 330, which is conducive to reducing the risk that the circuit conducted by the first contact 610 and the second contact 620 is sequentially conducted by the first moving magnet 320 and the second moving magnet 330 and the electromagnetic structure 200. In some embodiments, the first contact 610 and the second contact 620 are connected to a high-voltage circuit, and the coil 210 of the electromagnetic structure 200 is connected to a low-voltage circuit. If the first contact 610 and the second contact 620 are conducted and the electromagnetic structure 200 is electrified, the coil 210 will be damaged.

[0130] Exemplarily, the first contact 610 and the second contact 620 are both fixed on the shell body 110.

[0131] Exemplarily, one of the two first armatures 322 is used to push the first elastic sheet 630 to contact the first contact 610, which is conducive to improving the compactness of the structure of the relay and simplifying the composition structure of the relay.

[0132] In an embodiment, the first elastic sheet 630 contacts the first contact 610 before the movable contact 310 contacts the stationary contact 400 when the movable contact structure 300 slides from the first position to the second position. In this embodiment, when the relay is applied to a charging circuit of a charging pile, the first circuit in which the first contact 610 and the second contact 620 are located is in series with a resistor, and the second circuit in which the movable contact 310 and the stationary contact 400 are located is connected in parallel with the first circuit and then connected in series to the charging circuit, where the charging circuit refers to a charging loop formed between the charging pile and the battery system. Taking the resistor as 1000 ohms, the resistance of the first contact 610 and the second contact 620 after being turned on as 0.1 ohm, and the resistance of the movable contact 310 and the stationary contact 400 after being turned on as 0.1 ohm as examples, according to the principle of series voltage division, assuming that the voltage of the charging circuit is V, the voltage u1 of the first contact 610 and the second contact 620 after being turned on is 0.1 / (0.1+1000) V, and the load voltage is very small, thus the resistor is beneficial to reducing the electric arc generated by the opening and closing of the first contact 610 and the second contact 620. Moreover, the first elastic sheet 630 contacts the first contact 610 first, and the movable contact 310 contacts the stationary contact 400 later, that is, the first circuit is turned on first, and the second circuit is turned on later, which is beneficial to reducing the instantaneous current generated by the closing of the movable contact 310 and the stationary contact 400 according to the principle of parallel current division, and prolonging the service life.

[0133] In this embodiment, as shown in Figure 3 , Figure 9 and Figure 10 , the relay further comprises a third contact 710 and a second elastic sheet 720, the third contact 710 is provided with two and fixed to the first housing 100, and the second elastic sheet 720 is provided on the movable contact structure 300. When the first magnetic part 231 is attracted to the first movable magnetic piece 320, the two third contacts 710 are in contact with the second elastic sheet 720; when the first magnetic part 231 is attracted to the second movable magnetic piece 330, the two third contacts 710 are separated from the second elastic sheet 720. In this embodiment, the third contact 710 and the second elastic sheet 720 can expand the function of the relay and improve the applicability of the relay. The third contact 710 and the second elastic sheet 720 can be used to detect the opening and closing state of the movable contact 310 and the stationary contact 400.

[0134] Exemplarily, the third contact 710 is fixed to the housing body 110.

[0135] Exemplarily, the second elastic sheet 720 is provided on the insulating support 340.

[0136] In this embodiment, as shown in Figure 9 , Figure 13 and Figure 14 , the relay further comprises a second housing 800, and the first housing 100 is located in the second housing 800.

[0137] Exemplarily, the first contact 610 and the second contact 620 are clamped between the first shell 100 and the second shell 800, and the first elastic sheet 630 extends into the first shell 100. The first shell 100 is provided with a first positioning groove for accommodating the first contact 610 and a second positioning groove for accommodating the second contact 620.

[0138] Exemplarily, two third contacts 710 are clamped between the first shell 100 and the second shell 800. The third contact 710 has a contact rod 711, which penetrates the first shell 100 and is used to abut against or separate from the second elastic sheet 720. The first shell 100 is provided with a third positioning groove for accommodating the third contact 710, and the third contact 710 and the third positioning groove are arranged one by one.

[0139] Obviously, the above embodiments of the present application are merely exemplary and are not intended to limit the embodiments of the present application. For those skilled in the art, various obvious changes, re-adjustments and replacements can be made without departing from the scope of the present application. Here, it is unnecessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A relay characterized by comprising: The utility model relates to a kind of electromagnetic contactor, including: First shell (100); Electromagnetic structure (200) is fixed in the first shell (100), the electromagnetic structure (200) is equipped with two first magnetic parts (231) being spaced apart along first direction; Moving contact structure (300) is slidably arranged in the first shell (100) along second direction, the moving contact structure (300) includes moving contact head (310), first moving magnet (320) and second moving magnet (330) being spaced apart sequentially along the second direction, the magnetic pole of the first moving magnet (320) and the second moving magnet (330) is opposite;Wherein, the first moving magnet (320) includes first permanent magnet block (321) and two first armatures (322), the first permanent magnet block (321) is connected with two the first armatures (322) one by one along the two ends of the first direction;The second moving magnet (330) includes second permanent magnet block (331) and two second armatures (332), the second permanent magnet block (331) is connected with two the second armatures (332) one by one along the two ends of the first direction, and the magnetic pole of the first permanent magnet block (321) and the second permanent magnet block (331) is opposite;The first magnetic part (231), the first armature (322) and the second armature (332) are arranged one by one, and the first magnetic part (231) is located between the corresponding first armature (322) and the second armature (332) along the second direction; Fixed in the first shell (100) static contact (400), and located on the side of the moving contact structure (300) away from the electromagnetic structure (200); When the electromagnetic structure (200) is passed into positive current, the moving contact structure (300) slides to first position, two the first magnetic part (231) is all attracted with the first moving magnet (320) and forms first magnetic circuit, the first magnetic part (231) is attracted with the corresponding first armature (322), and the moving contact head (310) and the static contact (400) are separated; When the electromagnetic structure (200) is passed into reverse current, the moving contact structure (300) slides to second position, two the first magnetic part (231) is all attracted with the second moving magnet (330) and forms second magnetic circuit, the first magnetic part (231) is attracted with the corresponding second armature (332), and the moving contact head (310) and the static contact (400) are abutted.

2. The relay according to claim 1, characterized in that The moving contact structure (300) further includes insulating support (340), the first moving magnet (320) and the second moving magnet (330) are embedded in the insulating support (340), and the part of the first moving magnet (320) and the second moving magnet (330) attracted with the first magnetic part (231) are all set out of the insulating support (340), and the moving contact head (310) is arranged outside the insulating support (340).

3. The relay according to claim 2, characterized in that The movable contact structure (300) further comprises a contact support (350) connected with the insulating support (340), and the movable contact (310) and the elastic member (360) are both arranged between the insulating support (340) and the contact support (350), and the elastic member (360) can press the movable contact (310) on the contact support (350).

4. The relay according to claim 3, characterized in that The movable contact structure (300) further comprises a clamping plate (380) embedded in the insulating support (340), and both ends of the clamping plate (380) protrude out of the insulating support (340), and the contact support (350) comprises two connecting arms (351) corresponding to both ends of the clamping plate (380) in a one-to-one manner. And / or, the contact support (350) comprises a top plate (352), and the top plate (352) is provided with a first protruding part (353) on both sides along a third direction, and the movable contact structure (300) further comprises two sliding caps (390), and the first shell (100) is provided with two first sliding grooves (102), and the first protruding part (353), the sliding cap (390) and the first sliding groove (102) are arranged in a one-to-one correspondence, the sliding cap (390) is sleeved on the corresponding first protruding part (353), and the sliding cap (390) is slidingly arranged in the corresponding first sliding groove (102); And / or, the insulating support (340) is provided with a second protruding part (341) on both sides along the third direction, and the first shell (100) is provided with two second sliding grooves (103), and the second protruding part (341) and the second sliding groove (103) are arranged in a one-to-one correspondence, and the second protruding part (341) is slidingly arranged in the corresponding second sliding groove (103).

5. The relay of claim 1, wherein The first permanent magnet block (321) is provided in a U-shaped form, and the first armature (322) is provided in a flat plate form, and two ends of the first permanent magnet block (321) are respectively fitted with one side surface of the corresponding first armature (322); Or, the first permanent magnet block (321) is provided in a prismatic or cylindrical form, the first armature (322) comprises a first plate part (3221) and a second plate part (3222) arranged at an angle, the first permanent magnet block (321) is clamped between the first plate parts (3221) of the two first armatures (322), and the first armature (322) can be attracted to the corresponding first magnetic part (231) through the second plate part (3222).

6. The relay of claim 1, wherein The second permanent magnet block (331) is provided in a U-shaped form, and the second armature (332) is provided in a flat plate form, and two ends of the second permanent magnet block (331) are respectively fitted with one side surface of the corresponding second armature (332); Or, the second permanent magnet block (331) is provided in a prismatic or cylindrical shape, the second armature (332) includes a third plate portion (3321) and a fourth plate portion (3322) provided at an included angle, and the second permanent magnet block (331) is clamped between the third plate portions (3321) of the two second armatures (332), and the second armature (332) can be attracted to the corresponding first magnetic portion (231) through the fourth plate portion (3322).

7. The relay of claim 1, wherein One end of the first armature (322) is provided with a first slot (3223), and both ends of the first permanent magnet block (321) are respectively inserted into the first slot (3223) of the corresponding first armature (322); And / or, one end of the second armature (332) is provided with a second slot (3323), and both ends of the second permanent magnet block (331) are respectively inserted into the second slot (3323) of the corresponding second armature (332).

8. The relay of claim 1, wherein The electromagnetic structure (200) comprises: a coil (210); a static core (220) penetrating the coil (210); two magnetic yokes (230) including the first magnetic portion (231) and the second magnetic portion (232) provided at an included angle, and the second magnetic portion (232) of the two magnetic yokes (230) is connected with both ends of the static core (220) one by one.

9. The relay of claim 1, wherein The relay further comprises an arc extinguishing member (500) arranged in the first housing (100), and the arc extinguishing member (500) is located on the side of the static contact (400) facing the moving contact (310).

10. The relay according to any one of claims 1 to 9, characterized in that The relay further comprises: a first contact (610) fixed on the first housing (100); a second contact (620) fixed on the first housing (100); a first elastic sheet (630) connected with the second contact (620), and the first elastic sheet (630) is located between the first contact (610) and the first moving magnetic member (320) along a second direction; When the first magnetic portion (231) is attracted to the first moving magnetic member (320), the first moving magnetic member (320) is separated from the first elastic sheet (630), and the first elastic sheet (630) is separated from the first contact (610); When the first magnetic portion (231) is attracted to the second moving magnetic member (330), the first moving magnetic member (320), the first elastic sheet (630) and the first contact (610) are sequentially abutted.

11. The relay according to claim 10, characterized in that When the moving contact structure (300) slides from the first position to the second position, the contact between the first elastic sheet (630) and the first contact (610) precedes the contact between the moving contact (310) and the static contact (400).

12. The relay according to any one of claims 1 to 9, characterized in that The relay further comprises: two third contacts (710) fixed on the first housing (100); a second elastic sheet (720) arranged on the moving contact structure (300); When the first magnetic part (231) is attracted to the first moving magnetic element (320), both the third contact (710) are in contact with the second elastic sheet (720); When the first magnetic part (231) is attracted to the second moving magnetic element (330), both the third contact (710) are separated from the second elastic sheet (720).

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