Moving contact assembly and relay

Abstract

The present disclosure relates to the technical field of electronic control, and specifically relates to a moving contact assembly and a relay. The moving contact assembly comprises a first moving contact member and a second moving contact member, wherein the first moving contact member comprises a first wall and a second wall which are not parallel, one end of the second wall is connected to the first wall, and the other end of the second wall is provided with a first contact; the second moving contact member is disposed on a side of the first wall connected to the second wall, and a second contact is disposed on an end of the second moving contact member away from the first wall.

Description

Moving contact components and relays

[0001] This disclosure claims priority to Chinese Patent Application No. 202510124915.1, filed on January 26, 2025, the entire contents of which are incorporated herein by reference. Technical Field

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

[0003] A relay is an electronic control device that has a control system (also known as an input circuit) and a controlled system (also known as an output circuit), and is commonly used in automatic control circuits. Essentially, a relay is an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays a role in automatic adjustment, safety protection, and circuit switching in circuits.

[0004] With technological development and advancements, relays are trending towards smaller size and lower contact resistance. High-voltage DC electrical appliances are a type of relay, comprising a stationary contact assembly and a moving contact assembly. When the moving and stationary contact assemblies make contact, the relay conducts. However, a persistent problem in related technologies is the relatively high contact resistance between the stationary and moving contact assemblies in relays.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0006] The purpose of this disclosure is to provide a moving contact component and a relay, thereby reducing the contact resistance of the relay to a certain extent.

[0007] According to one aspect of this disclosure, a movable contact assembly is provided, the movable contact assembly comprising:

[0008] The first movable contact includes a first wall and a second wall that are not parallel, one end of the second wall is connected to the first wall, and a first contact point is provided on the other end of the second wall;

[0009] The second movable contact is located on the side of the first wall that connects to the second wall, and a second contact point is provided on the end of the second movable contact that is away from the first wall.

[0010] According to one embodiment of this disclosure, the top surface of the second wall is provided with the first contact point at both ends along the first direction, and the top surface of the second movable contact piece is provided with the second contact point at both ends along the first direction. The first direction is the length direction of the second movable contact piece, the top surface of the second wall is the side of the second wall facing away from the first wall, and the top surface of the second movable contact piece is the side of the second movable contact piece facing away from the first wall.

[0011] According to one embodiment of this disclosure, the first movable contact further includes:

[0012] The third wall is disposed opposite to the second wall, and one end of the third wall is connected to the first wall. The other end of the third wall is provided with a third contact point, and the second movable contact piece is disposed in the gap between the second wall and the third wall.

[0013] According to one embodiment of this disclosure, the first wall extends from the second wall to the third wall.

[0014] According to one embodiment of this disclosure, the first wall includes:

[0015] The first sub-wall has one end connected to the second wall, and the other end of the first sub-wall extends toward the third wall;

[0016] The second sub-wall has one end connected to the third wall, and the other end of the second sub-wall extends toward the second wall. There is a gap between the first sub-wall and the second sub-wall.

[0017] According to one embodiment of the present disclosure, the second movable contact has a first posture and a second posture. When the second movable contact is in the first posture, the second contact point on the second movable contact protrudes from the first contact point on the second wall. When the second movable contact is in the second posture, the second contact point on the second movable contact is flush with the first contact point on the second wall.

[0018] According to one embodiment of this disclosure, the moving contact assembly further includes:

[0019] A contact elastic element is connected to the second movable contact piece. When the second movable contact piece is in the second posture, the contact elastic element is compressed to provide contact pressure to the second movable contact piece.

[0020] According to one embodiment of this disclosure, the contact elastic element is a first limiting leaf spring, which passes through the first movable contact piece and is connected to the second movable contact piece. When the second movable contact piece is in the second posture, the first limiting leaf spring is compressed to provide contact pressure to the second movable contact piece and restrict the movable contact assembly from rotating along a first circumferential direction, which is the direction about the height direction of the second movable contact piece.

[0021] According to one embodiment of this disclosure, the moving contact assembly further includes:

[0022] A contact spring, one end of which is connected to the first movable contact piece to provide contact pressure to the first movable contact piece.

[0023] According to one embodiment of this disclosure, the contact elastic element is a first contact spring, which is connected to the first movable contact piece and the second movable contact piece respectively. When the second movable contact piece changes from the first posture to the second posture, the first contact spring is compressed.

[0024] According to one embodiment of this disclosure, the first contact spring includes:

[0025] The substrate portion includes a first contact segment, an elastically bent segment, and a second contact segment. The first contact segment and the second contact segment are respectively connected to the two ends of the elastically bent segment, and the first contact segment and the second contact segment abut against the first wall. The elastically bent segment protrudes in a direction away from the first wall, and the second movable contact piece abuts against the elastically bent segment.

[0026] According to one embodiment of this disclosure, the first contact spring further includes:

[0027] The claw portion includes a first claw and a second claw, which are respectively connected to both sides of the base plate portion along a first direction, and the first claw and the second claw abut against both sides of the second movable contact piece, wherein the first direction is the length direction of the second movable contact piece.

[0028] According to one embodiment of this disclosure, the contact elastic element is a second contact spring, one end of the second contact spring is connected to the second movable contact piece, and the other end of the second contact spring passes through the first movable contact piece. When the second movable contact piece is in the second posture, the second contact spring is compressed.

[0029] According to one embodiment of this disclosure, the contact elastic element is a contact spring, one end of which passes through the first movable contact piece and is connected to the second movable contact piece. When the second movable contact piece is in the second posture, the contact spring is compressed.

[0030] According to one embodiment of this disclosure, the moving contact assembly further includes:

[0031] A second limiting spring is connected to the first movable contact to restrict the first movable contact from rotating along a first circumferential direction, which is the direction around the height of the second movable contact.

[0032] According to one embodiment of this disclosure, the second wall is disposed at one end of the first wall along a second direction, the second direction being the width direction of the second movable contact piece, and the first movable contact piece further includes:

[0033] A limiting wall is provided at the end of the first wall along a first direction, which is the length direction of the second movable contact piece.

[0034] According to one embodiment of this disclosure, the first wall and the second wall are perpendicular.

[0035] According to one embodiment of this disclosure, the height of the second movable contact piece is greater than the width of the second movable contact piece, and / or, the height of the second wall is greater than the width of the second wall.

[0036] According to one embodiment of this disclosure, the height of the third wall is greater than the width of the third wall.

[0037] According to a second aspect of this disclosure, a relay is provided, the relay including the moving contact component described above.

[0038] According to one embodiment of the present disclosure, the relay includes a plurality of moving contact components arranged along a second direction, the second direction being the width direction of the second moving contact piece.

[0039] According to one embodiment of the present disclosure, when the moving contact assembly includes a second limiting leaf spring, a plurality of moving contact assemblies share the second limiting leaf spring.

[0040] According to one embodiment of the present disclosure, the second limiting leaf spring is provided with a plurality of first anti-rotation structures and second anti-rotation structures. The plurality of first anti-rotation structures are arranged along the second direction, and the plurality of moving contact components correspond one-to-one with the first anti-rotation structures, so that the first anti-rotation structure can prevent the first moving contact piece in the corresponding moving contact component from rotating along the first circumferential direction.

[0041] The relay further includes a push rod component connected to a second anti-rotation structure to prevent the moving contact assembly from rotating relative to the push rod component in a first circumferential direction.

[0042] According to one embodiment of this disclosure, the push rod component includes:

[0043] A contact support having a top wall located on the side of the second movable contact away from the first wall, and the orthographic projection of the top wall onto the second movable contact does not coincide with the second contact point.

[0044] According to one embodiment of this disclosure, a plurality of the moving contact components are disposed on the contact support.

[0045] According to one embodiment of this disclosure, the relay further includes: a stationary contact assembly for contacting or separating from the moving contact assembly, and the push rod member further includes:

[0046] A pushing part is provided on the side of the moving contact assembly opposite to the stationary contact assembly, and the pushing part is connected to the second limiting leaf spring and the contact bracket.

[0047] According to one embodiment of this disclosure, at least one of the plurality of moving contact components has a length greater than the lengths of the other moving contact components.

[0048] According to one embodiment of this disclosure, the number of moving contact components is three, and the length of the middle moving contact component is greater than the length of the other two moving contact components.

[0049] According to one embodiment of this disclosure, the relay further includes:

[0050] A static contact assembly, which is used to contact or separate from the dynamic contact assembly;

[0051] A short-circuit protection structure, comprising a first magnetic conductive part and a second magnetic conductive part, wherein the first magnetic conductive part is connected to the moving contact assembly, and the second magnetic conductive part is disposed on the side of the moving contact assembly facing the stationary contact assembly.

[0052] The moving contact assembly provided in this embodiment includes a first moving contact piece and a second moving contact piece. The first moving contact piece includes a first wall and a second wall that are not parallel. One end of the second wall is connected to the first wall, and a first contact point is provided at the other end of the second wall. The second moving contact piece is located on the side of the first wall connected to the second wall, and a second contact point is provided at the end of the second moving contact piece facing away from the first wall. By providing a first contact point on the first moving contact piece and a second contact point on the second moving contact piece, the moving contact assembly has multiple contacts that can be connected in parallel, thereby reducing the contact resistance of the relay and achieving low contact resistance in the relay. Furthermore, by having the first wall support the second wall and the second moving contact piece, the support area is increased, which is beneficial to improving the connection stability of the moving contact assembly and reducing the assembly difficulty.

[0053] Furthermore, the first moving contact also includes a third wall, on which a third contact is provided, further increasing the number of contacts and thus reducing the contact resistance.

[0054] Furthermore, the first wall includes a first sub-wall and a second sub-wall, with a gap between the first sub-wall and the second sub-wall. That is, the first sub-wall and the second sub-wall are separate structures, which facilitates the processing of the first moving contact piece.

[0055] Furthermore, when the second moving contact is in the first posture, the end of the second moving contact away from the first wall protrudes beyond the end of the second wall away from the first wall. When the second moving contact is in the second posture, the end of the second moving contact away from the first wall and the end of the second wall away from the first wall are flush. During the relay conduction process, the second moving contact contacts the stationary contact assembly first, and the first moving contact contacts the stationary contact assembly later. During the relay de-energization process, the first moving contact disconnects first and the second moving contact disconnects later, thus realizing that the first moving contact only carries current and does not disconnect under load, ensuring the stability of the contact resistance.

[0056] Furthermore, a first contact spring is provided between the first moving contact piece and the second moving contact piece. The first contact spring has a self-correcting function. The first contact spring makes the first moving contact piece and the second moving contact piece relatively independent. In the contact direction, the first contact spring achieves self-correction to cooperate with the static contact component.

[0057] Furthermore, the height of the second moving contact is greater than the width of the second moving contact, and the height of the second wall is greater than the width of the second wall. This occupies less space in the width direction, saving space in the width direction. It is suitable for relays with limited space in the width direction, effectively solving the contradiction between relay miniaturization and low contact resistance.

[0058] Furthermore, the relay provided in this embodiment includes at least one moving contact assembly with multiple parallel contacts, thereby minimizing the relay contact resistance in a limited space and thus improving the relay performance.

[0059] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0060] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0061] Figure 1 is a schematic diagram of the structure of a first type of dynamic contact assembly provided in an exemplary embodiment of this disclosure;

[0062] Figure 2 is a schematic diagram of the conduction state of the first type of dynamic contact component provided in an exemplary embodiment of this disclosure;

[0063] Figure 3 is a schematic diagram of the structure of a first movable contact provided in an exemplary embodiment of the present disclosure;

[0064] Figure 4 is a schematic diagram of the structure of a first contact spring provided in an exemplary embodiment of the present disclosure;

[0065] Figure 5 is a structural schematic diagram of a second type of dynamic contact assembly provided in an exemplary embodiment of this disclosure;

[0066] Figure 6 is a structural schematic diagram of a third type of dynamic contact assembly provided in an exemplary embodiment of this disclosure;

[0067] Figure 7 is a schematic diagram of the structure of a relay provided in an exemplary embodiment of the present disclosure;

[0068] Figure 8 is a cross-sectional view of the relay provided in an exemplary embodiment of this disclosure along section line AA;

[0069] Figure 9 is a schematic diagram of a first type of moving contact assembly provided in an exemplary embodiment of this disclosure;

[0070] Figure 10 is an exploded view of a first type of moving contact assembly provided in an exemplary embodiment of this disclosure;

[0071] Figure 11 is a cross-sectional view of a first type of moving contact assembly provided in an exemplary embodiment of this disclosure;

[0072] Figure 12 is a schematic diagram of a second type of moving contact assembly provided in an exemplary embodiment of this disclosure;

[0073] Figure 13 is an exploded view of a second type of moving contact assembly provided in an exemplary embodiment of this disclosure;

[0074] Figure 14 is a cross-sectional view of a second type of moving contact assembly provided in an exemplary embodiment of this disclosure;

[0075] Figure 15 is a cross-sectional view of a third type of moving contact assembly provided in an exemplary embodiment of this disclosure.

[0076] Explanation of reference numerals in the attached drawings: 10. Moving contact assembly; 11. First moving contact piece; 111. First wall; 1111. First sub-wall; 1112. Second sub-wall; 112. Second wall; 1120. First contact point; 113. Third wall; 1130. Third contact point; 12. Second moving contact piece; 1200. Second contact point; 13. First contact spring; 131. Base plate portion; 1311. First contact section; 1312. Elastic bending section; 1313. Second contact section; 132. Claw portion; 1321. First claw; 1322. Second claw; 14. Contact spring; 15. Second contact spring; 20. Static contact assembly; 21. Static contact; 211. Extension 212. Main body; 213. Contact part; 30. Insulating cover; 40. Drive assembly; 41. Pushing part; 411. Push rod; 412. Support platform; 42. Magnetic circuit part; 421. Moving iron core; 422. Stationary iron core; 423. Coil frame; 424. Coil; 425. Magnetic guide cylinder; 426. First elastic element; 427. U-shaped yoke; 50. Limiting leaf spring; 501. First limiting leaf spring; 502. Second limiting leaf spring; 51. Base; 52. Deformation part; 53. Connecting part; 60. Anti-short circuit structure; 61. First magnetic guide part; 62. Second magnetic guide part; 70. Contact bracket; 71. Top wall; 72. Support wall. Detailed Implementation

[0077] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that the invention will be thorough and complete, and the concept of the exemplary embodiments will be fully conveyed to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0078] The present disclosure provides a movable contact assembly 10, as shown in Figures 1-15. The movable contact assembly 10 includes a first movable contact piece 11 and a second movable contact piece 12. The first movable contact piece 11 includes a first wall 111 and a second wall 112 that are not parallel. One end of the second wall 112 is connected to the first wall 111, and the other end of the second wall 112 is provided with a first contact point 1120. The second movable contact piece 12 is located on the side of the first wall 111 that is connected to the second wall 112, and the end of the second movable contact piece 12 that is away from the first wall 111 is provided with a second contact point 1200.

[0079] The moving contact assembly 10 provided in this embodiment includes a first moving contact piece 11 and a second moving contact piece 12. The first moving contact piece 11 includes a non-parallel first wall 111 and a second wall 112. One end of the second wall 112 is connected to the first wall 111, and the other end of the second wall 112 is provided with a first contact point 1120. The second moving contact piece 12 is located on the side of the first wall 111 connected to the second wall 112, and the end of the second moving contact piece 12 away from the first wall 111 is provided with a second contact point 1200. By providing the first contact point 1120 on the first moving contact piece 11 and the second contact point 1200 on the second moving contact piece 12, the moving contact assembly 10 has multiple contacts that can be connected in parallel, thereby reducing the contact resistance of the relay and achieving low contact resistance in the relay. Furthermore, by having the first wall 111 support the second wall 112 and the second moving contact piece 12, the support area is increased, which is beneficial to improving the connection stability of the moving contact assembly 10.

[0080] The moving contact assembly 10 provided in this embodiment will now be described in detail. In this embodiment, the first direction is the length direction of the second moving contact piece 12, and the second direction is the width direction of the second moving contact piece 12. Referring to FIG7, the first direction is the Y direction, and the second direction is the X direction.

[0081] As shown in Figure 3, the first movable contact 11 includes a non-parallel first wall 111 and a second wall 112. One end of the second wall 112 is connected to the first wall 111, and the other end of the second wall 112 is provided with a first contact point 1120. The first wall 111 and the second wall 112 are plate-like structures. The first wall 111 and the second wall 112 are not parallel, meaning that there is a preset angle between the first wall 111 and the second wall 112, which is greater than 0 degrees and less than 180 degrees. For example, the first wall 111 and the second wall 112 are perpendicular.

[0082] The first wall 111 and the second wall 112 of the first movable contact piece 11 can be an integrally formed structure, for example, the first wall 111 and the second wall 112 can be formed by bending a sheet metal. Alternatively, the first wall 111 and the second wall 112 can also be a separate formed structure, for example, the first wall 111 and the second wall 112 can be formed by welding two independent sheets metal.

[0083] The bottom surface of the first wall 111 is a planar or near-planar structure, and the bottom surface of the first wall 111 serves as the mounting surface during installation. The second wall 112 has a first contact 1120 at the end away from the first wall 111, and the first contact 1120 is used to contact the static contact assembly 20.

[0084] As shown in Figure 5, the first wall 111 and the second wall 112 are arranged perpendicularly, and the first wall 111 and the second wall 112 are connected to form an "L"-shaped first movable contact piece 11. In the L-shaped structure of the first movable contact piece 11, the bottom surface of the first wall 111 serves as the mounting surface during installation. The structure is simple, takes into account both installation stability and space utilization, and solves the problem of installing the movable contact assembly 10 under the condition of limited space in the second direction.

[0085] Furthermore, in order to increase the number of parallel contacts of the moving contact assembly 10 and the stationary contact assembly 20, the first moving contact piece 11 may also include a third wall 113, the third wall 113 and the second wall 112 are arranged opposite to each other, one end of the third wall 113 is connected to the first wall 111, the other end of the third wall 113 is provided with a third contact 1130, and the second moving contact piece 12 is disposed in the interval between the second wall 112 and the third wall 113.

[0086] The third wall 113 and the second wall 112 are located on the same side of the first wall 111, and the third wall 113 and the second wall 112 can be symmetrically arranged, with a gap between them. The second wall 112 is perpendicular to the first wall 111, and the third wall 113 is perpendicular to the first wall 111. A third contact 1130 is provided at the end of the third wall 113 facing away from the first wall 111, which increases the number of relay contacts and thus reduces contact resistance.

[0087] The third wall 113 and the first wall 111 can be integrally formed, for example, the third wall 113 and the first wall 111 can be formed by bending a sheet metal. Alternatively, the third wall 113 and the first wall 111 can also be separate formed structures, for example, the first wall 111 and the third wall 113 can be formed by welding two separate sheets metal.

[0088] In one feasible embodiment, the first wall 111 extends from the second wall 112 to the third wall 113. That is, the first wall 111 is a continuous structure, and the first wall 111, the second wall 112, and the third wall 113 form a U-shaped or approximately U-shaped first movable contact piece 11. The U-shaped first movable contact piece 11 is easy to position during installation, which helps to improve manufacturing efficiency. Of course, in practical applications, the first movable contact piece 11 can also be other structures, such as an E-shaped or approximately E-shaped structure (the second wall, the third wall, and the fourth wall are sequentially spaced on the first wall to form an E-shaped structure), and the embodiments disclosed herein are not limited to this.

[0089] In another feasible implementation, as shown in FIG6, the first wall 111 has a discontinuous structure. For example, the first wall 111 includes a first sub-wall 1111 and a second sub-wall 1112, one end of the first sub-wall 1111 is connected to the second wall 112, and the other end of the first sub-wall 1111 extends toward the third wall 113; one end of the second sub-wall 1112 is connected to the third wall 113, and the other end of the second sub-wall 1112 extends toward the second wall 112, and there is a gap between the first sub-wall 1111 and the second sub-wall 1112.

[0090] The first sub-wall 1111 and the second wall 112 form an L-shaped structure, and the second sub-wall 1112 and the third wall 113 form an L-shaped structure. That is, the first moving contact 11 is formed by two L-shaped components arranged face to face. The double L-shaped structure can reduce the processing difficulty of the first moving contact 11.

[0091] The second wall 112 is located at one end of the first wall 111 along the second direction, that is, the second direction is perpendicular to the second wall 112. The first movable contact 11 may also include a limiting wall, which is located at the end of the first wall 111 along the first direction, and the second direction is perpendicular to the first direction. The limiting wall is used to limit the second movable contact 12 in the first direction, preventing the second movable contact 12 from moving in the first direction and falling off the first movable contact 11. It can also ensure the position of the second movable contact 12 relative to the first movable contact 11 in the first direction, so that the contact point will not shift, improving contact reliability. In addition, the arc starting point is consistent, reducing the fluctuation of the arc extinguishing time, which is more conducive to arc extinguishing.

[0092] The second movable contact 12 is located on the side of the first wall 111 that connects to the second wall 112. The end of the second movable contact 12 that is away from the first wall 111 is provided with a second contact 1200. The second contact 1200, the first contact 1120 and the third contact 1130 together form a movable contact group, and the movable contact assembly 10 and the stationary contact assembly 20 are in contact.

[0093] The second movable contact 12 has a first posture and a second posture. When the second movable contact 12 is in the first posture, as shown in FIG1, the second contact point 1200 on the second movable contact 12 protrudes from the first contact point 1120 on the second wall 112. When the second movable contact 12 is in the second posture, as shown in FIG2, the second contact point 1200 on the second movable contact 12 is flush with the first contact point 1120 on the second wall 112.

[0094] The relay operates in two states: the first posture is the initial state, in which the moving contact assembly 10 and the stationary contact assembly 20 are separated, meaning the relay is in a non-conductive state; the second posture is the operating state, in which the moving contact assembly 10 and the stationary contact assembly 20 are in contact, meaning the relay is in a conductive state. When the second moving contact 12 is in the first posture, the top surface of the second contact 1200 on the second moving contact 12 is higher than the top surface of the first contact 1120 on the first moving contact 11, and there is a preset height difference h between the first contact 1120 on the first moving contact 11 and the second contact 1200 on the second moving contact 12. During relay conduction, the second moving contact 12 contacts the stationary contact assembly 20 first, followed by the first moving contact 11. During relay deactivation, the first moving contact 11 disconnects first, followed by the second moving contact 12, thus enabling the first moving contact 11 to only carry current and disconnect without load, ensuring the stability of the contact resistance.

[0095] Furthermore, in this embodiment of the present disclosure, the movable contact assembly 10 also includes a contact elastic element connected to the second movable contact piece 12. When the second movable contact piece 12 is in a second posture, the contact elastic element is compressed to provide contact pressure to the second movable contact piece 12.

[0096] In one feasible embodiment, the contact elastic element is a first contact spring 13, which is connected to a first movable contact 11 and a second movable contact 12. A preset height difference between the first movable contact 11 and the second movable contact 12 can be adjusted using the first contact spring 13. When the second movable contact 12 changes from a first posture to a second posture, the first contact spring 13 is compressed. In the first posture, the second movable contact 12, the first contact spring 13, and the first movable contact 11 are in a balanced state. In the second posture, the stationary contact assembly 20 and the second movable contact 12 compress the first contact spring 13. The first contact spring 13 has a self-correcting function; it makes the first movable contact 11 and the second movable contact 12 relatively independent, and in the contact direction, self-correction can be achieved through the first contact spring 13 to cooperate with the stationary contact assembly 20.

[0097] As shown in Figure 4, the first contact spring 13 includes a base plate portion 131, which includes a first contact segment 1311, an elastic bending segment 1312, and a second contact segment 1313. The first contact segment 1311 and the second contact segment 1313 are respectively connected to the two ends of the elastic bending segment 1312, and the first contact segment 1311 and the second contact segment 1313 abut against the first wall 111. The elastic bending segment 1312 protrudes in a direction away from the first wall 111, and the second movable contact piece 12 abuts against the elastic bending segment 1312.

[0098] Furthermore, the first contact spring 13 also includes a latch portion 132, which includes a first latch 1321 and a second latch 1322. The first latch 1321 and the second latch 1322 are respectively connected to both sides of the base plate portion 131, and the first latch 1321 and the second latch 1322 abut against both sides of the second movable contact piece 12. The first latch 1321 and the second latch 1322 are symmetrically arranged, and the first latch 1321 and the second latch 1322 position the second movable contact piece 12, so that the second movable contact piece 12 forms a gap between the second wall 112 and the third wall 113.

[0099] The second moving contact 12 is positioned and its orientation adjusted by the first claw 1321 and the second claw 1322, enabling the moving contact assembly 10 to achieve self-correction during movement. This avoids friction or collision between the second moving contact 12 and the first moving contact 11, reducing the risk of jamming / high resistance caused by friction and scraping. It also ensures the gap between the sidewalls of the second moving contact 12 and the first moving contact 11, guaranteeing that the second moving contact 12 is positioned at the center of the first moving contact 11 along the second direction. This prevents the contact point from shifting, improving contact reliability. Furthermore, it ensures consistent arc initiation points, reducing fluctuations in arc extinguishing time and facilitating arc extinguishing.

[0100] The first claw 1321 includes a first connecting section and a first engaging section. The first connecting section has a bent structure. One end of the first connecting section is connected to the base plate portion 131, and the other end of the first connecting section is connected to the first engaging section. The first engaging section is in contact with the surface of the second movable contact piece 12, while the bent first connecting section is not in contact with the second movable contact piece 12. The second claw 1322 includes a second connecting section and a second engaging section. The second connecting section has a bent structure. One end of the second connecting section is connected to the base plate portion 131, and the other end of the second connecting section is connected to the second engaging section. The second engaging section is in contact with the surface of the second movable contact piece 12, while the bent second connecting section is not in contact with the second movable contact piece 12.

[0101] Optionally, as shown in Figures 12-14, the first contact spring 13 in the moving contact assembly 10 can also be replaced by a second contact spring 15. One end of the second contact spring 15 is connected to the second moving contact 12, and the other end of the second contact spring 15 passes through the first wall 111. When the second moving contact 12 is in the second state, the second contact spring 15 is compressed.

[0102] A second through hole can be provided on the first wall 111, through which the second contact spring 15 passes. The end of the second contact spring 15 facing away from the second movable contact piece 12 is fixed (and fixedly connected to the push rod component). When the first wall 111 is a single piece, the second through hole is provided on the first wall 111. When the first wall 111 includes a first sub-wall 1111 and a second sub-wall 1112, the second through hole can be the gap between the first sub-wall 1111 and the second sub-wall 1112.

[0103] Understandably, the first contact spring 13 in the moving contact assembly 10 can also be replaced by a contact spring. The contact spring is connected to the second moving contact 12, and the contact spring is compressed when the second moving contact 12 is in the second state.

[0104] The contact spring can be located at the bottom of the second movable contact piece 12. The upper end of the contact spring is connected to the second movable contact piece 12, and the other end of the contact spring is fixed (fixedly connected to the push rod component). The first movable contact piece 11 is provided with a first through hole, and the contact spring passes through the first through hole. When the first wall 111 is a single piece, the first through hole is located in the first wall 111. When the first wall 111 includes a first sub-wall 1111 and a second sub-wall 1112, the first through hole can be the gap between the first sub-wall 1111 and the second sub-wall 1112.

[0105] Based on this, as shown in Figure 9, the moving contact assembly 10 may also include a second limiting leaf spring 502, which is connected to the first moving contact piece 11 and is used to provide contact pressure and anti-rotation to the first moving contact piece 11 (preventing the moving contact assembly 10 from rotating along the first circumferential direction, which is the direction around the height of the second moving contact piece 12).

[0106] The second limiting leaf spring 502 may be provided with a first anti-rotation structure, which is used to limit the rotation of the moving contact assembly 10. For example, as shown in FIG10, the second limiting leaf spring 502 includes a second base 51, a second connecting portion 53, and a second deformation portion 52. The second base 51 has a second connecting portion 53 and a second deformation portion 52 on both sides, and the second base 51 is connected to the second connecting portion 53 through the second deformation portion 52. The second connecting portion 53 of the second limiting leaf spring 502 is connected to the first moving contact piece 11 through the first anti-rotation structure. The second deformation portion 52 is used to generate deformation to provide contact pressure.

[0107] In one feasible implementation, as shown in FIG15, the contact elastic element may include a first limiting leaf spring 501. The first limiting leaf spring passes through the first movable contact piece 11 and is connected to the second movable contact piece 12. When the second movable contact piece 12 is in a second posture, the first limiting leaf spring 501 is compressed to provide contact pressure to the second movable contact piece 12. Furthermore, the first limiting leaf spring 501 is used to limit the rotation of the movable contact assembly 10 along a first circumferential direction. That is, the first limiting leaf spring 501 is used to prevent rotation and provide contact pressure to the second movable contact piece 12.

[0108] Based on this, as shown in Figure 15, the moving contact assembly 10 also includes a contact spring 14, a first limiting leaf spring 501 connected to a second moving contact 12, and a first limiting leaf spring 501 compressed when the second moving contact 12 is in a second posture. One end of the contact spring 14 is connected to the first moving contact 11 to drive the first moving contact 11 and provide contact pressure.

[0109] The moving contact assembly 10 may further include a first magnetically conductive part 61, which is connected to the first moving contact piece 11, and one end of the contact spring 14 is connected to the first magnetically conductive part 61. That is, the contact spring 14 does not penetrate the first magnetically conductive part 61, thus avoiding the loss of magnetic cross-section caused by perforation in the first magnetically conductive part 61.

[0110] A third anti-rotation structure may be provided on the first limiting leaf spring 501 to prevent the first moving contact 11 and the second moving contact 12 from rotating. For example, the first limiting leaf spring 501 includes a first base, a first connecting portion, and a first deformable portion. The first base has a first connecting portion and a first deformable portion on both sides, and the first base is connected to the first connecting portion via the first deformable portion. The first connecting portion of the first limiting leaf spring 501 is connected to the first moving contact 11 via the first anti-rotation structure. The first deformable portion is used to generate deformation to provide contact force, and the contact spring 14 deforms to provide contact pressure.

[0111] In some embodiments, the second wall 112 has at least one first protrusion at one end opposite to the first wall 111, and the first protrusion forms a first contact 1120. The second movable contact 12 has at least one second protrusion on one side opposite to the first wall 111, and the second protrusion forms a second contact 1200. For example, the second protrusion is provided on the top surface of the second movable contact 12 near both ends.

[0112] For example, the top surface of the second wall 112 has first contacts 1120 at both ends along the first direction, the top surface of the second movable contact 12 has second contacts 1200 at both ends along the first direction, and the top surface of the third wall 113 has third contacts 1130 at both ends along the first direction. The top surface of the second wall 112 is the side of the second wall 112 facing away from the first wall 111, the top surface of the second movable contact 12 is the side of the second movable contact 12 facing away from the first wall 111, and the top surface of the third wall 113 is the side of the third wall 113 facing away from the first wall 111. The first contact 1120 can be a first protrusion, the second contact 1200 can be a second protrusion, and the third contact 1130 can be a third protrusion. The first protrusion, the second protrusion, and the third protrusion are used to contact or separate from the stationary contact assembly 20.

[0113] It is understood that in some other embodiments of this disclosure, the two ends of the top surface of the second movable contact piece 12 can be used directly as the second contact point 1200, and the two ends of the top surface of the second wall 112 can be used as the first contact point 1120. The embodiments of this disclosure are not limited thereto.

[0114] In one possible implementation, the height of the second movable contact 12 is greater than the width of the second movable contact 12, and / or the height of the second wall 112 is greater than the width of the second wall 112. The height of the second movable contact 12 is its dimension in the direction perpendicular to the first wall 111, and the width of the second movable contact 12 is its dimension in the second direction.

[0115] Based on this, the height of the second wall 112 is greater than the width of the second wall 112, and the height of the third wall 113 is greater than the width of the third wall 113. That is, the moving contact assembly 10 occupies more space in the height direction and less space in the width direction, which can save space in the width direction. It is suitable for relays with limited space in the width direction and effectively solves the contradiction between relay miniaturization and low contact resistance.

[0116] In another feasible embodiment, the height of the second movable contact 12 is less than the width of the second movable contact 12. The height of the second movable contact 12 is its dimension in the direction perpendicular to the first wall 111, and the width of the second movable contact 12 is its dimension in the second direction.

[0117] Based on this, the height of the third wall 113 is less than the width of the third wall 113. That is, the moving contact assembly 10 occupies more space in the width direction and less space in the height direction, which can save space in the height direction and is suitable for relays with limited space in the height direction.

[0118] The moving contact assembly 10 provided in this embodiment includes a first moving contact piece 11 and a second moving contact piece 12. The first moving contact piece 11 includes a non-parallel first wall 111 and a second wall 112. One end of the second wall 112 is connected to the first wall 111, and the other end of the second wall 112 is provided with a first contact point 1120. The second moving contact piece 12 is located on the side of the first wall 111 connected to the second wall 112, and the end of the second moving contact piece 12 away from the first wall 111 is provided with a second contact point 1200. By providing the first contact point 1120 on the first moving contact piece 11 and the second contact point 1200 on the second moving contact piece 12, the moving contact assembly 10 has multiple contacts that can be connected in parallel, thereby reducing the contact resistance of the relay and achieving low contact resistance in the relay. Furthermore, by having the first wall 111 support the second wall 112 and the second moving contact piece 12, the support area is increased, which is beneficial to improving the connection stability of the moving contact assembly 10.

[0119] An exemplary embodiment of this disclosure also provides a relay, as shown in Figures 7-15, the relay including a moving contact assembly 10.

[0120] The moving contact assembly 10 includes a first moving contact piece 11 and a second moving contact piece 12. The first moving contact piece 11 includes a first wall 111 and a second wall 112 that are not parallel. One end of the second wall 112 is connected to the first wall 111, and the other end of the second wall 112 is provided with a first contact point 1120. The second moving contact piece 12 is located on the side of the first wall 111 that is connected to the second wall 112, and the end of the second moving contact piece 12 that is away from the first wall 111 is provided with a second contact point 1200.

[0121] Furthermore, the relay provided in this embodiment may further include a drive assembly 40, a stationary contact assembly 20, and a short-circuit protection structure 60. The drive assembly 40 is connected to the moving contact assembly 10, and the drive assembly 40 is used to drive the moving contact assembly 10 to move in response to a control signal. The stationary contact assembly 20 is used to contact or separate from the moving contact assembly 10; the short-circuit protection structure 60 includes a first magnetic conductive part 61 and a second magnetic conductive part 62. The first magnetic conductive part 61 is connected to the moving contact assembly 10, and the second magnetic conductive part 62 is disposed on the side of the moving contact assembly 10 facing the stationary contact assembly 20.

[0122] The drive assembly 40 may include a push rod component and a magnetic circuit portion 42. The push rod component includes a push part 41 and a contact bracket 70. The push part 41 is located on the side of the moving contact assembly 10 away from the stationary contact assembly 20, and the push part 41 is connected to the limiting leaf spring 50 (first limiting leaf spring 501 or second limiting leaf spring 502) and the contact bracket 70.

[0123] The moving contact assembly 10 is mounted on the end of the pusher 41 facing the stationary contact assembly 20. A limiting spring 50 is connected to the pusher 41 and is used to apply an elastic force to the moving contact assembly 10 in the direction of the stationary contact assembly 20 to provide contact pressure.

[0124] As shown in Figure 9, the pushing part 41 may include a push rod 411 and a support platform 412, with the push rod 411 located at the bottom of the support platform 412. A limiting spring 50 is located on the top surface of the support platform 412, and a connecting structure may be provided on the top surface of the support platform 412, to which the limiting spring 50 is connected. For example, a protrusion may be provided on the support platform 412, and a connecting hole may be provided on the limiting spring 50, with the protrusion engaging within the connecting hole. The contact bracket 70 is connected to the pushing part 41, and the contact bracket 70 can move together with the pushing part 41.

[0125] As shown in Figure 11, the contact support 70 has a top wall 71 located on the side of the second movable contact 12 opposite to the first wall 111. The orthographic projection of the top wall 71 onto the second movable contact 12 does not coincide with the second contact 1200, and the orthographic projection of the top wall 71 onto the first movable contact 11 does not coincide with the first contact 1120. For example, the first protrusion and the second protrusion are exposed on the top wall 71. By exposing the first protrusion and the second protrusion to the top wall 71, the movable second contact 12 and the first movable contact 11 can contact the stationary contact assembly 20.

[0126] The contact support 70 may further include a support wall 72 for connecting the top wall 71 and the support platform 412. For example, the contact support 70 includes a first support wall and a second support wall, which are respectively connected to the two ends of the top wall 71 along a second direction. The first and second support walls extend towards the drive assembly 40 and can engage with the support platform 412.

[0127] The second limiting leaf spring 502 may be provided with a first anti-rotation structure and a second anti-rotation structure. The first anti-rotation structure is connected to the moving contact assembly 10, and the second anti-rotation structure is connected to the push rod member. The first anti-rotation structure and the second anti-rotation structure prevent the moving contact assembly 10 from rotating relative to the push rod member.

[0128] The first magnetic conductive part 61 at least partially surrounds the first movable contact 11. For example, the first magnetic conductive part 61 may be U-shaped or straight.

[0129] The anti-short-circuit structure 60 is used to generate a suction force in the contact closing direction on multiple moving contact components 10 when a fault high current exists in the moving contact component 10. With the anti-short-circuit structure 60, the second limiting leaf spring 502 can also play a self-correcting role, avoiding the problem of increasing the space occupied in the second direction due to configuring an anti-short-circuit structure for each moving contact.

[0130] As shown in Figure 8, the magnetic circuit section 42 includes a moving iron core 421, a stationary iron core 422, a coil frame 423, and a coil 424. The coil frame 423 is a hollow cylindrical shape and is made of insulating material. The coil frame 423 is located on the side of the yoke plate facing away from the stationary contact assembly 20, and the coil 424 is wound around the outer periphery of the coil frame 423. As shown in Figure 8, the magnetic circuit section 42 also includes a magnetic guide cylinder 425, which at least partially surrounds the moving iron core 421.

[0131] The stationary iron core 422 has a through hole, and the pushing part 41 is movably inserted into the through hole. The moving iron core 421 is arranged opposite to the stationary iron core 422 and is connected to the pushing part 41, so that it is attracted by the stationary iron core 422 when the coil 424 is energized. The moving iron core 421 and the pushing part 41 can be connected by screwing, riveting, welding or other methods.

[0132] The magnetic circuit section 42 also includes a first elastic element 426, which is disposed between the stationary iron core 422 and the moving iron core 421, and is used to reset the moving iron core 421 when the coil 424 is de-energized.

[0133] In one embodiment, the first elastic element 426 is a spring and is sleeved on the outer periphery of the pushing part 41, but is not limited thereto.

[0134] It should be noted that when the coil 424 is energized, the stationary iron core 422 attracts the moving iron core 421 to move upward, and the moving iron core 421 can drive the pushing part 41 to move upward. The stationary contact assembly 20 includes a stationary contact 21. When the moving contact assembly 10 contacts the stationary contact 21, the moving contact assembly 10 is stopped by the stationary contact assembly 20, while the pushing part 41 will continue to move upward until the overtravel is completed. During the overtravel process, the limiting leaf spring 50, after being compressed by the pushing part 41, can provide elastic force to the moving contact assembly 10 to provide contact pressure.

[0135] Each stationary contact 21 has a protrusion 211, a main body 212, and a contact portion 213. The protrusion 211 and the contact portion 213 are connected through the main body 212. The two main bodies 212 of the two stationary contacts 21 are respectively inserted into a pair of mounting holes. The protrusion 211 is located on the outer surface of the insulating cover 30 and is connected to the insulating cover 30. The contact portion 213 is located in the inner cavity and has a stationary contact portion.

[0136] In one embodiment, the protrusion 211 and the main body 212 are integral structures, while the contact portion 213 and the main body 212 are separate structures. Designing the contact portion 213 and the main body 212 as separate structures can reduce the processing difficulty of the stationary contact 21, thereby reducing costs.

[0137] Furthermore, the protrusion 211 and the main body 212 are made of a first material, and the contact part 213 is made of a second material, the first material and the second material being different.

[0138] It should be noted that the protrusion 211 of the stationary contact 21 is used for electrical connection with the copper busbar, and the contact portion 213 of the stationary contact 21 is used for contact with the moving contact assembly 10. Therefore, the protrusion 211 needs to be made of a material with high conductivity, and the contact portion 213 needs to be made of an anti-adhesion material.

[0139] In this embodiment, the protrusion 211 and the contact portion 213 are designed as separate structures. Thus, the protrusion 211 can be made of a first material with high electrical conductivity, such as oxygen-free copper, while the contact portion 213 can be made of a second material with anti-adhesion properties, such as alloy copper. Of course, the first and second materials are not limited to oxygen-free copper and alloy copper.

[0140] Furthermore, the connection method between the main body 212 and the contact part 213 can be welding, riveting, interference fit, etc., and this application does not make any special limitation on this.

[0141] It is understood that in this embodiment, the main body 212 is cylindrical, the protrusion 211 is connected to one axial end of the main body 212, and the contact portion 213 is connected to the other axial end of the main body 212. The protrusion 211 is generally disc-shaped, and the axis of the protrusion 211 coincides with the axis of the main body 212. The diameter of the protrusion 211 is larger than the diameter of the main body 212. Of course, in other embodiments, the stationary contact 21 can also be designed with other regular or irregular shapes, and this application does not limit this.

[0142] In one feasible implementation, the relay includes a moving contact assembly 10 having multiple contacts that can form a parallel circuit during use, thereby achieving a current shunting effect.

[0143] In another feasible embodiment, the relay may include multiple moving contact components 10. The multiple moving contact components 10 form a reliable parallel circuit after their two ends contact a pair of stationary contacts 21 along the second direction. The large number of contact points formed by the multiple moving contact components 10 and a single stationary contact 21 achieves a current shunting effect. Furthermore, based on the principle that the magnitude of the electro-repulsive force is proportional to the square of the current, the magnitude of the electro-repulsive force at each contact point is significantly reduced, which is beneficial for improving short-circuit withstand capability and enhancing the reliability of the relay.

[0144] When the relay includes multiple moving contact components 10, and each moving contact component 10 includes a second limiting spring 502, the multiple moving contact components 10 can share a single second limiting spring 502. For example, multiple sets of second deformation portions 52 and second connecting portions 53 are provided on the second base 51, and the limiting and anti-rotation function can be achieved through a single second limiting spring 502.

[0145] The second limiting leaf spring 502 is provided with a plurality of first anti-rotation structures, which are arranged along the second direction. For example, the first anti-rotation structures are correspondingly provided on the second connecting part 53. The plurality of moving contact components 10 and the plurality of first anti-rotation structures correspond one-to-one, so that the first anti-rotation structure can prevent the first moving contact piece 11 in the corresponding first moving contact component 10 from rotating along the first circumferential direction.

[0146] The second limiting spring 502 is provided on the contact bracket 70. That is, multiple moving contact components 10 are provided on one contact bracket 70. Therefore, only one second limiting spring 502 and contact bracket 70 are used to prevent multiple moving contact components 10 from rotating. This avoids the problems of increasing space occupation by providing a contact bracket 70 for each moving contact, or other anti-rotation methods, increasing the difficulty of part forming, and complicated assembly.

[0147] For example, the first anti-rotation structure on the second limiting leaf spring 502 can be a limiting hole or a limiting protrusion. When the first anti-rotation structure on the second limiting leaf spring 502 is a limiting hole, the bottom of the first moving contact piece 11 is provided with a limiting protrusion that mates with the limiting hole. When the first anti-rotation structure on the second limiting leaf spring 502 is a limiting protrusion, the bottom of the first moving contact piece 11 is provided with a limiting hole that mates with the limiting protrusion.

[0148] As shown in Figure 10, the second base 51 of the second limiting leaf spring 502 is connected to the drive assembly 40 through the second anti-rotation structure. The second connecting part 53 is connected to the moving contact assembly 10 through the first anti-rotation structure, preventing the moving contact assembly 10 from rotating relative to the stationary contact assembly 20. This ensures the consistency of the contact positions between the moving contact assembly 10 and the stationary contact assembly 20, improving the reliability of the relay.

[0149] In this embodiment, when there are processing errors in the multiple moving contact components 10, some of the moving contact components 10 may have poor contact with the stationary contact component 20 when they come into contact. To solve this problem, the second limiting leaf spring 502 may include multiple second deformation portions 52, which are respectively connected to the second base 51, and each second deformation portion 52 is connected to a second connecting portion 53. There is a gap between adjacent second deformation portions 52, so that the second connecting portion 53 and the second deformation portion 52 connected to each moving contact component 10 can move independently when subjected to pressure, thereby adapting to different moving contact components 10 and avoiding the problem of poor contact between some of the multiple moving contact components 10 and the stationary contact component 20 due to processing errors.

[0150] When the moving contact assembly 10 includes a first limiting leaf spring 501, one first limiting leaf spring 501 can correspond to one moving contact assembly 10, or one first limiting leaf spring 501 can also correspond to multiple moving contact assemblies 10.

[0151] The first limiting leaf spring 501 may include a third anti-rotation structure and a fourth anti-rotation structure. The third anti-rotation structure can prevent the first movable contact piece 11 in the corresponding first movable contact assembly 10 from rotating along the first circumferential direction. The push rod member and the fourth anti-rotation structure are connected to prevent the movable contact assembly 10 from rotating relative to the push rod member along the first circumferential direction.

[0152] When the relay includes multiple moving contact assemblies 10, the first magnetic conductive part 61 can be provided in some of the moving contact assemblies 10, or the first magnetic conductive part 61 can be provided in all of the moving contact assemblies 10. The thickness of the first magnetic conductive part 61 in the multiple moving contact assemblies 10 can be the same or different. Among them, the gap between the moving contact assembly 10 without the first magnetic conductive part 61 or with the stationary contact 21 is less than or equal to the contact gap between the remaining moving contact assembly 10 and the stationary contact 21.

[0153] By providing a first magnetic part 61 on some of the moving contact components 10, multiple moving contact components 10 move asynchronously when the relay is turned off. This is beneficial for achieving ultimate breaking between contacts and for achieving delayed contact opening during short circuits, thus ensuring the reliability of the relay operation and extending the service life of the product.

[0154] In some embodiments, at least one of the moving contact components 10 has a length greater than the length of the other moving contact components 10. The length of the moving contact component 10 is the dimension of the moving contact component 10 in a first direction. The second direction is perpendicular to the first direction, and both ends of the longer moving contact component 10 extend beyond the other moving contact components 10 along the length direction. That is, along the first direction, the ends of the other moving contact components 10 are located between the two ends of the longer moving contact component 10.

[0155] There are multiple moving contact components 10, and the multiple moving contact components 10 are of different lengths, so that the distance between two adjacent moving contact components 10 can be increased, so that the adjacent moving contact components 10 are not affected, and the distance between two adjacent short-circuit protection structures 60 can also be increased, so that the magnetic field between adjacent short-circuit protection structures 60 will not interfere.

[0156] For example, the number of moving contact components 10 is three, with the middle moving contact being longer than the other two. The relay includes a first moving contact component, a second moving contact component, and a third moving contact component arranged sequentially along a second direction, with the second moving contact component being longer than both the first and third moving contact components. The lengths of the first and third moving contact components may be the same or different.

[0157] The length of the second moving contact component is greater than that of the first and third moving contact components, which causes the arc initiation points formed between the stationary contact component and the multiple moving contact components to be staggered, thereby increasing the distance between the arc initiation points and preventing the arcs formed by multiple arc initiation points from gathering and affecting each other, which is beneficial to improving the arc extinguishing performance.

[0158] For example, when the relay includes a first moving contact assembly, a second moving contact assembly, and a third moving contact assembly, a first magnetic part 61 may be provided on the first moving contact assembly and the third moving contact assembly, but the first magnetic part 61 may not be provided on the second moving contact assembly.

[0159] Furthermore, the relay may also include a yoke plate and an insulating cover 30. The stationary contact assembly 20 is disposed within the insulating cover 30 and is fixed relative to the insulating cover 30. The moving contact assembly is capable of contacting and separating from the stationary contact assembly 20.

[0160] The insulating cover 30 has an inner cavity, and the stationary contact assembly 20 is mounted on the insulating cover 30. The stationary contact assembly 20 may include a pair of stationary contacts 21, at least a portion of each stationary contact 21 extending into the inner cavity of the insulating cover 30, and each stationary contact 21 also has a stationary contact point at its bottom, which may be integrally or separately disposed at the bottom of the stationary contact 21. One stationary contact 21 serves as a terminal for current inflow, and the other stationary contact 21 serves as a terminal for current outflow.

[0161] The moving contact assembly 10 has moving contacts at both ends, and each moving contact at both ends of the moving contact assembly 10 corresponds to a stationary contact 21. That is, the moving contact assembly 10 connects two stationary contacts 21 to realize the conduction of the relay.

[0162] In this embodiment, the top of the insulating cover 30 has two mounting holes, each communicating with the inner cavity. A pair of stationary contacts 21 are respectively disposed in the two mounting holes. Furthermore, each stationary contact 21 can be connected to the insulating cover 30 by welding, but is not limited thereto.

[0163] It is understood that the insulating cover 30 can be made of ceramic material, that is, the insulating cover 30 is a ceramic cover, but it is not limited thereto. For example, in other embodiments, the insulating cover 30 can also be made of plastic material.

[0164] In this embodiment, the insulating cover 30 is made of ceramic and is connected to the yoke plate via a frame. The frame can be a ring-shaped metal component, such as an iron-nickel alloy. One end of the frame is connected to the edge of the opening of the insulating cover 30, for example, by laser welding, brazing, resistance welding, or adhesive bonding. The other end of the frame is connected to the yoke plate, also by laser welding, brazing, resistance welding, or adhesive bonding. The frame is positioned between the insulating cover 30 and the yoke plate to facilitate their connection.

[0165] The relay provided in this embodiment includes at least one moving contact assembly 10, which has multiple contacts connected in parallel, thereby enabling the relay to minimize contact resistance in a limited space.

[0166] It is understood that the various embodiments / implementations provided in this application can be combined with each other without creating contradictions, and will not be described one by one here.

[0167] In the embodiments of this application, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise expressly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0168] In the description of the embodiments of the application, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the application and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the application.

[0169] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the claims. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0170] The above are merely preferred embodiments of the application examples and are not intended to limit the application examples. For those skilled in the art, the application examples can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the application examples should be included within the protection scope of the application examples.

Claims

1. A dynamic contact assembly, characterized by The dynamic contact component includes: The first movable contact includes a first wall and a second wall that are not parallel, one end of the second wall is connected to the first wall, and a first contact point is provided on the other end of the second wall; The second movable contact is located on the side of the first wall that connects to the second wall, and a second contact point is provided on the end of the second movable contact that is away from the first wall.

2. The dynamic contact assembly of claim 1, wherein, The top surface of the second wall is provided with the first contact point at both ends along the first direction, and the top surface of the second movable contact piece is provided with the second contact point at both ends along the first direction. The first direction is the length direction of the second movable contact piece. The top surface of the second wall is the side of the second wall that is away from the first wall, and the top surface of the second movable contact piece is the side of the second movable contact piece that is away from the first wall.

3. The dynamic contact assembly of claim 1, wherein, The first movable contact also includes: The third wall is disposed opposite to the second wall, and one end of the third wall is connected to the first wall. The other end of the third wall is provided with a third contact point, and the second movable contact piece is disposed in the gap between the second wall and the third wall.

4. The dynamic contact assembly of claim 3, wherein, The first wall extends from the second wall to the third wall.

5. The dynamic contact assembly of claim 3, wherein, The first wall includes: A first sub-wall, one end of which is connected to the second wall, and the other end of which extends toward the third wall; The second sub-wall has one end connected to the third wall, and the other end of the second sub-wall extends toward the second wall. There is a gap between the first sub-wall and the second sub-wall.

6. The dynamic contact assembly of claim 1, wherein, The second movable contact has a first posture and a second posture. When the second movable contact is in the first posture, the second contact point on the second movable contact protrudes from the first contact point on the second wall. When the second movable contact is in the second posture, the second contact point on the second movable contact is flush with the first contact point on the second wall.

7. The dynamic contact assembly of claim 6, wherein, The dynamic contact assembly further includes: A contact elastic element is connected to the second movable contact piece. When the second movable contact piece is in the second posture, the contact elastic element is compressed to provide contact pressure to the second movable contact piece.

8. The dynamic contact assembly of claim 7, wherein, The contact elastic element is a first limiting leaf spring, which passes through the first movable contact piece and is connected to the second movable contact piece. When the second movable contact piece is in the second posture, the first limiting leaf spring is compressed to provide contact pressure to the second movable contact piece and restrict the movable contact assembly from rotating along the first circumferential direction, which is the direction around the height direction of the second movable contact piece.

9. The dynamic contact assembly of claim 8, wherein, The dynamic contact assembly further includes: A contact spring, one end of which is connected to the first movable contact piece to provide contact pressure to the first movable contact piece.

10. The dynamic contact assembly of claim 7, wherein, The contact elastic element is a first contact spring, which is connected to the first movable contact piece and the second movable contact piece respectively. When the second movable contact piece changes from the first posture to the second posture, the first contact spring is compressed.

11. The dynamic contact assembly of claim 10, wherein, The first contact spring includes: The substrate portion includes a first contact segment, an elastically bent segment, and a second contact segment. The first contact segment and the second contact segment are respectively connected to the two ends of the elastically bent segment, and the first contact segment and the second contact segment abut against the first wall. The elastically bent segment protrudes in a direction away from the first wall, and the second movable contact piece abuts against the elastically bent segment.

12. The dynamic contact assembly of claim 11, wherein, The first contact spring also includes: The claw portion includes a first claw and a second claw, which are respectively connected to both sides of the base plate portion along a first direction, and the first claw and the second claw abut against both sides of the second movable contact piece, wherein the first direction is the length direction of the second movable contact piece.

13. The dynamic contact assembly of claim 7, wherein, The contact elastic element is a second contact spring, one end of which is connected to the second movable contact piece, and the other end of which passes through the first movable contact piece. When the second movable contact piece is in the second posture, the second contact spring is compressed.

14. The dynamic contact assembly of claim 7, wherein, The contact elastic element is a contact spring. One end of the contact spring passes through the first movable contact piece and is connected to the second movable contact piece. When the second movable contact piece is in the second posture, the contact spring is compressed.

15. The dynamic contact assembly of any one of claims 8 and 10-14, wherein, The dynamic contact assembly further includes: A second limiting spring is connected to the first movable contact to restrict the first movable contact from rotating along a first circumferential direction, which is the direction around the height of the second movable contact.

16. The dynamic contact assembly of claim 1, wherein, The second wall is disposed at one end of the first wall along a second direction, the second direction being the width direction of the second movable contact piece, and the first movable contact piece further includes: A limiting wall is provided at the end of the first wall along a first direction, which is the length direction of the second movable contact piece.

17. The dynamic contact assembly of claim 1, wherein, The first wall and the second wall are perpendicular.

18. The dynamic contact assembly of claim 1, wherein, The height of the second movable contact is greater than the width of the second movable contact, and / or the height of the second wall is greater than the width of the second wall.

19. The dynamic contact assembly of claim 3, wherein, The height of the third wall is greater than the width of the third wall.

20. A relay characterized by comprising: The relay includes the moving contact assembly as described in any one of claims 1-19.

21. The relay of claim 20, wherein, The relay includes a plurality of moving contact components, which are arranged along a second direction, the second direction being the width direction of the second moving contact piece.

22. The relay of claim 21, wherein, When the moving contact assembly includes a second limiting leaf spring, multiple moving contact assemblies share the second limiting leaf spring.

23. The relay of claim 22, wherein the at least one spring is a leaf spring. The second limiting leaf spring is provided with a plurality of first anti-rotation structures and second anti-rotation structures. The plurality of first anti-rotation structures are arranged along the second direction. The plurality of moving contact components and the first anti-rotation structures correspond one-to-one, so that the first anti-rotation structure can prevent the first moving contact piece in the corresponding moving contact component from rotating along the first circumferential direction. The relay further includes a push rod component connected to a second anti-rotation structure to prevent the moving contact assembly from rotating relative to the push rod component in a first circumferential direction.

24. The relay of claim 23, wherein, The push rod component includes: A contact support having a top wall located on the side of the second movable contact away from the first wall, and the orthographic projection of the top wall onto the second movable contact does not coincide with the second contact point.

25. The relay of claim 24, wherein, The contact support is provided with a plurality of the moving contact components.

26. The relay of claim 25, wherein, The relay further includes: a stationary contact assembly for contacting or separating from the moving contact assembly; the push rod component further includes: A pushing part is provided on the side of the moving contact assembly opposite to the stationary contact assembly, and the pushing part is connected to the second limiting leaf spring and the contact bracket.

27. The relay of claim 22, wherein At least one of the moving contact components has a length greater than the lengths of the other moving contact components.

28. The relay of claim 27, wherein the at least one spring is a leaf spring. The number of moving contact components is three, and the length of the middle moving contact component is greater than the length of the other two moving contact components.

29. The relay of claim 20, wherein: The relay also includes: A static contact assembly, which is used to contact or separate from the dynamic contact assembly; A short-circuit protection structure, comprising a first magnetic conductive part and a second magnetic conductive part, wherein the first magnetic conductive part is connected to the moving contact assembly, and the second magnetic conductive part is disposed on the side of the moving contact assembly facing the stationary contact assembly.

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