Relay

Abstract

The utility model relates to a relay which comprises a pushing assembly and an auxiliary moving contact assembly. The auxiliary moving contact assembly comprises an auxiliary moving contact piece, a retaining wall and an insulating base, the insulating base is installed on the pushing assembly, the retaining wall is arranged on the insulating base, the retaining wall surrounds the periphery of the insulating base and forms a containing groove in the insulating base in a surrounding mode, and the auxiliary moving contact piece is arranged in the containing groove. The retaining wall is arranged on the insulating seat, the retaining wall surrounds the periphery of the insulating seat and forms the accommodating groove on the insulating seat, the accommodating groove provides an accommodating space for the auxiliary moving contact, and after the auxiliary moving contact is mounted in the accommodating groove, the creepage distance between the main moving contact assembly and the auxiliary moving contact can be effectively increased through the side wall (namely the retaining wall) of the accommodating groove. The risk that the main moving contact component and the auxiliary moving contact component are broken down under high-voltage impact is reduced, and the safety performance of the relay is effectively improved.

Description

Technical Field

[0001] This application relates to the field of electrical control device technology, and in particular to a relay. Background Technology

[0002] A relay is a widely used electrical control device. It 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. A relay is essentially an "automatic switch" that uses a smaller current to control a larger current, thus playing roles in automatic adjustment, safety protection, and circuit switching. It is used in household appliances, automobiles, industrial control, power systems, communication devices, and other fields.

[0003] A high-voltage DC relay is a type of relay. Some high-voltage DC relays include auxiliary components, active contacts, main stationary contacts, and a push assembly. The auxiliary components are used to detect the contact or separation state between the active contact and the main stationary contact. The auxiliary components include an auxiliary moving contact and an auxiliary stationary contact. The push assembly includes a push rod and a contact bracket connected to the push rod. The auxiliary moving contact and the active contact are respectively mounted on the contact bracket, and the active contact and the auxiliary moving contact are respectively located on opposite sides of the contact bracket. The push rod drives the active contact and the auxiliary moving contact to move through the contact bracket, causing the active contact to move closer to or away from the main stationary contact, and causing the auxiliary moving contact to move closer to or away from the auxiliary stationary contact.

[0004] In related technologies, the active contact is installed close to the auxiliary moving contact, resulting in a small creepage distance between the active and auxiliary moving contacts. Under high voltage surges, the active and auxiliary moving contacts are easily broken down, failing to maintain good insulation and leading to poor relay safety. Utility Model Content

[0005] Therefore, it is necessary to provide a relay that can increase the creepage distance between the active contact component and the auxiliary moving contact component, thereby improving safety performance.

[0006] A relay, comprising:

[0007] Drive components;

[0008] An auxiliary moving contact assembly includes an auxiliary moving contact, a baffle wall, and an insulating base. The insulating base is mounted on the pushing assembly, and the baffle wall is disposed on the insulating base. The baffle wall surrounds the insulating base and forms a receiving groove on the insulating base, and the auxiliary moving contact is disposed in the receiving groove.

[0009] In one embodiment, the auxiliary moving contact assembly further includes an insulating cover that covers the opening of the receiving groove.

[0010] In one embodiment, the insulating cover includes a cover body and a first protrusion disposed on the cover body. The first protrusion protrudes from the side of the cover body facing the receiving groove. The auxiliary movable contact includes an auxiliary movable contact piece and two auxiliary movable contacts disposed on the auxiliary movable contact piece. The two auxiliary movable contacts are spaced apart along a first direction. The portion of the auxiliary movable contact piece located between the two auxiliary movable contacts is connected to the first protrusion.

[0011] In one embodiment, the auxiliary movable contact piece is integrally formed with the first protrusion.

[0012] In one embodiment, the system further includes two spaced-apart auxiliary stationary contacts, which are respectively used to contact the two auxiliary moving contacts. The auxiliary stationary contacts are located on the side of the auxiliary moving contact assembly facing the receiving groove. The cover body and the retaining wall have a clearance opening, and there are two clearance openings. The two clearance openings correspond one-to-one with the auxiliary stationary contacts, and the clearance openings are used to avoid the corresponding auxiliary stationary contacts.

[0013] In one embodiment, the avoidance openings are respectively provided at the two opposite ends of the cover body, and the first protrusion is located between the two avoidance openings.

[0014] In one embodiment, the auxiliary moving contact assembly further includes a plug-in post connected to the insulating base. The plug-in post is located in the receiving groove and protrudes toward the cover body. A plug-in hole is provided on the first protrusion, and the plug-in post is interference-fitted into the plug-in hole.

[0015] In one embodiment, the insulating cover further includes a second protrusion disposed on the cover body. The second protrusion protrudes from the side of the cover body facing the receiving groove and is located between the baffle and the first protrusion. A first positioning groove is formed between the second protrusion and the first protrusion. A positioning protrusion is disposed on the side of the insulating seat facing the receiving groove. The positioning protrusion is inserted into the first positioning groove. A second positioning groove is formed between the baffle and the positioning protrusion. The first protrusion is inserted into the second positioning groove.

[0016] In one embodiment, the auxiliary movable contact includes a movable contact segment and a connecting segment distributed sequentially along a first direction. The movable contact segment is connected to the first protrusion through the connecting segment. The movable contact segment is used to contact the auxiliary stationary contact. The size of the movable contact segment in a second direction first decreases and then increases along the first direction. The second direction is perpendicular to the first direction.

[0017] In one embodiment, the retaining wall includes a main body and two extensions, both of which are disposed at the end of the main body away from the insulating seat, the insulating cover is located between the two extensions, and the retaining wall forms a notch located between the two extensions.

[0018] In one embodiment, the side of the insulating cover facing away from the insulating base is flush with the end of the retaining wall away from the insulating base.

[0019] In one embodiment, an active contact is further included. The pushing assembly includes a contact bracket and a pushing component. The active contact is connected to the pushing component. The contact bracket includes a fixed plate, two support arms, and two third protrusions. The two support arms are respectively connected to opposite ends of the fixed plate in a first direction, and the ends of the two support arms away from the fixed plate are connected to the pushing component. The active contact is disposed on the side of the fixed plate opposite to the auxiliary moving contact assembly. The two third protrusions are respectively disposed on the fixed plate and are spaced apart along a second direction, which is perpendicular to the first direction. The auxiliary moving contact assembly also includes two mounting plates spaced apart along the second direction. The two mounting plates are disposed on the side of the insulating seat opposite to the receiving groove, and mounting grooves are respectively provided on opposite sides of the two mounting plates. The two third protrusions correspond one-to-one with the mounting grooves on the two mounting plates, and the third protrusions are engaged in the corresponding mounting grooves.

[0020] In one embodiment, both of the mounting slots have a mounting opening at one end in the first direction, and the auxiliary moving contact assembly further includes a rib disposed on the insulating base. The rib is located between the two mounting plates and is used to abut against the fixing plate. A first guide slope is provided at the end of the rib near the mounting opening.

[0021] In one embodiment, the auxiliary moving contact assembly further includes a stop pin disposed on the rib, the stop pin being located on the side of the first guide slope away from the mounting opening, the fixing plate being provided with a stop hole, the stop pin being inserted into the stop hole, and the end of the stop pin away from the rib being provided with a second guide slope.

[0022] In one embodiment, the active contact is further included as a main stationary contact located on one side of the active contact, the active contact being able to contact or separate from the main stationary contact, and the pushing assembly further includes an upper magnetic conductor and a lower magnetic conductor, the upper magnetic conductor being located on the side of the active contact facing the main stationary contact, and the lower magnetic conductor being located on the side of the active contact away from the upper magnetic conductor.

[0023] In one embodiment, the pushing component further includes a spring, a spring seat, and two fixing plates. The spring is connected between the active contact and the spring seat. The two fixing plates are located on opposite sides of the spring seat, and each fixing plate corresponds to a support arm. Each fixing plate includes a first segment and a second segment connected to the first segment. The first segment and the second segment are set at an angle. The end of the first segment away from the second segment is connected to the spring seat, and the end of the second segment away from the first segment is connected to the corresponding support arm. A support surface is formed on the side of the second segment facing the active contact. The lower magnetic conductor is connected to the active contact. The active contact and the lower magnetic conductor form a moving spring assembly. The support surface is spaced apart from the moving spring assembly. The support surface is used to support the moving spring assembly on the path of movement away from the main stationary contact when a short-circuit current causes the active contact and the main stationary contact to spring apart.

[0024] The aforementioned relay has a retaining wall installed on the insulating base. The retaining wall surrounds the insulating base and forms a receiving groove on the insulating base. The receiving groove provides space for the auxiliary moving contact. When the auxiliary moving contact is installed in the receiving groove, the creepage distance between the active contact assembly and the auxiliary moving contact can be effectively increased through the side wall (i.e., the retaining wall) of the receiving groove. This reduces the risk of the active contact assembly and the auxiliary moving contact being broken down under high voltage impact, and effectively improves the safety performance of the relay.

[0025] Furthermore, placing an insulating cover over the opening of the receiving groove will block the side of the auxiliary moving contact facing the opening, which can increase the electrical clearance between the main stationary contact and the auxiliary moving contact, and at the same time can prevent the electric arc between the active contact and the main stationary contact from hitting the auxiliary moving contact to a certain extent.

[0026] Furthermore, the plug is interference-fitted into the plug hole to connect and fix the insulating cover and the insulating base. The insulating bases do not need to be connected and fixed by metal parts such as rivets or connecting screws, which helps to maintain the good insulation performance of the relay.

[0027] Furthermore, by inserting the positioning protrusion into the first positioning groove and the first protrusion into the second positioning groove, on the one hand, the groove wall of the positioning groove can limit the protrusion, reduce the amount of shaking of the insulating cover relative to the insulating seat, reduce the impact of the insulating cover on the insulating seat, thereby reducing the risk of the insulating seat breaking and improving reliability. Moreover, since the auxiliary moving contact is integrally formed with the insulating cover, the limiting of the protrusion by the groove wall of the positioning groove can also reduce the offset of the auxiliary moving contact caused by the shaking of the insulating cover, which is conducive to ensuring the contact consistency between the auxiliary moving contact and the auxiliary stationary contact. On the other hand, the creepage on the active contact needs to bypass the side wall of the second positioning groove, the side wall of the first positioning groove, and the positioning protrusion in sequence to reach the auxiliary moving contact. Therefore, the side wall of the first positioning groove, the side wall of the second positioning groove, and the positioning protrusion can be used to further extend the creepage path from the active contact to the auxiliary moving contact.

[0028] Furthermore, by setting the size of the moving contact in the second direction to first decrease and then increase in one direction, making the moving contact in the first direction have a structure that is wide at both ends and narrow in the middle, the overall flexibility of the moving contact can be improved, the contact stress between the auxiliary moving contact and the auxiliary stationary contact can be reduced to the connection part between the auxiliary moving contact and the insulating base, thereby reducing the risk of the auxiliary moving contact breaking at the root of the connection with the insulating cover, preventing the auxiliary moving contact from breaking and failing, and helping to extend the service life of the relay. Attached Figure Description

[0029] Figure 1 This is a structural diagram of a relay at an angle in one embodiment of this application.

[0030] Figure 2 This is a structural diagram of the relay from another angle in one embodiment of this application.

[0031] Figure 3 for Figure 2 A cross-sectional view along the AA direction.

[0032] Figure 4 This is a structural diagram of a relay at another angle in one embodiment of this application.

[0033] Figure 5 for Figure 4 Cross-sectional view along the BB direction.

[0034] Figure 6 for Figure 5 Enlarged view of point C in the middle.

[0035] Figure 7 This is a structural diagram of a relay after the main stationary contact, auxiliary stationary contact, and insulating cover have been removed in one embodiment of this application.

[0036] Figure 8This is a top view of a relay after the main stationary contact, auxiliary stationary contact, and insulating cover have been removed in one embodiment of this application.

[0037] Figure 9 for Figure 8 A cross-sectional view along the DD direction.

[0038] Figure 10 This is a side view of a relay after the main stationary contact, auxiliary stationary contact, and insulating cover have been removed in one embodiment of this application.

[0039] Figure 11 for Figure 10 A cross-sectional view along the EE direction.

[0040] Figure 12 This is a structural diagram of the contact support and the auxiliary moving contact assembly at an angle in one embodiment.

[0041] Figure 13 This is a structural diagram of the contact support and auxiliary moving contact assembly from another angle in one embodiment.

[0042] Figure 14 This is an assembly structure diagram of the contact support and the auxiliary moving contact assembly at another angle in one embodiment.

[0043] Figure 15 This is a structural diagram of an auxiliary moving contact component at one angle in one embodiment.

[0044] Figure 16 This is a structural diagram of the auxiliary moving contact component from another angle in one embodiment.

[0045] Figure 17 This is a structural diagram of the auxiliary moving contact component at another angle in one embodiment.

[0046] Figure 18 This is a perspective view of the contact support at one angle in one embodiment.

[0047] Figure 19 This is a perspective view of the contact support from another angle in one embodiment.

[0048] Figure 20 This is a structural diagram of the insulating cover and auxiliary moving contact at an angle in one embodiment.

[0049] Figure 21 This is a structural diagram of the insulating cover and auxiliary moving contact from another angle in one embodiment.

[0050] Figure 22 This is a structural diagram of the insulating cover and auxiliary moving contact assembled at another angle in one embodiment.

[0051] Figure 23 This is a structural diagram of the insulating cover and auxiliary moving contact at another angle in one embodiment.

[0052] Figure 24 This is a structural diagram of an auxiliary moving contact at an angle in one embodiment.

[0053] Figure 25 This is a structural diagram of the auxiliary moving contact member from another angle in one embodiment.

[0054] Figure 26 for Figure 9 Enlarged view of a section at point F.

[0055] In the picture:

[0056] 1. Pushing assembly; 101. Lower magnetic conductor; 102. Contact bracket; 1021. Fixing plate; 10211. Stop hole; 1022. Support arm; 1023. Third protrusion; 103. Spring; 104. Spring seat; 105. Push rod; 106. Upper magnetic conductor; 107. Fixing piece; 1071. First section; 1072. Second section; 10721. Support surface; 1073. Third section;

[0057] 2. Auxiliary moving contact assembly; 201. Insulating base; 2011. Positioning protrusion; 2012. Second positioning groove; 202. Auxiliary moving contact; 2022. Moving contact segment; 20221. First end; 20222. Bending portion; 20223. Second end; 2023. Connecting segment; 2024. Notch; 2025. Auxiliary moving contact point; 203. Insulating cover; 2031. Cover body; 2032. First protrusion; 2033. Clearance opening; 2034. Insertion hole; 2035. Second protrusion; 20351, First positioning groove; 204, retaining wall; 2041, main body; 2042, extension; 2043, notch; 205, mounting plate; 2051, mounting groove; 2052, reinforcing rib; 206, receiving groove; 207, plug-in post; 208, protruding rib; 2081, first guide slope; 209, stop pin; 2091, second guide slope; 3, insulating cover; 4, yoke plate; 5, main stationary contact; 6, auxiliary stationary contact; 7, moving iron core; 8, coil; 9, active contact. Detailed Implementation

[0058] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0059] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0060] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0061] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0062] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0063] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0064] See Figure 1 , Figure 2 and Figure 3 , Figure 1 This invention provides a structural diagram of a relay at an angle according to an embodiment of the present application. Figure 2 This invention provides a structural diagram of a relay from another angle in one embodiment of the present application. Figure 3 for Figure 2 A cross-sectional view of AA. The relay includes an active contact 9, an auxiliary moving contact assembly 2, a push assembly 1, an insulating cover 3, a yoke plate 4, two main stationary contacts 5, and two auxiliary stationary contacts 6. The yoke plate 4 is disposed at the bottom of the insulating cover 3, and a cavity is formed between the yoke plate 4 and the insulating cover 3. The active contact 9 and the auxiliary moving contact assembly 2 are both disposed within the cavity, and a portion of the push assembly 1 is disposed within the cavity. The two main stationary contacts 5 and the two auxiliary stationary contacts 6 are all fixedly disposed at the upper end of the insulating cover 3, and the lower ends of the two main stationary contacts 5 and the two auxiliary stationary contacts 6 extend into the cavity. In this embodiment, the insulating cover 3 is a ceramic cover.

[0065] See Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 12 and Figure 15The auxiliary moving contact assembly 2 includes an auxiliary moving contact 202, a baffle 204, and an insulating base 201. The insulating base 201 is mounted on the pushing assembly 1, and the baffle 204 is disposed on the insulating base 201. The baffle 204 surrounds the insulating base 201 and forms a receiving groove 206 on the insulating base 201. The auxiliary moving contact 202 is disposed within the receiving groove 206. It can be understood that the active contact 9 is used to contact the two main stationary contacts 5, and the auxiliary moving contact 202 is used to contact the two auxiliary stationary contacts 6. A retaining wall 204 is provided on the insulating base 201. The retaining wall 204 surrounds the insulating base 201 and forms a receiving groove 206 on the insulating base 201. The receiving groove 206 provides space for the auxiliary moving contact 202. When the auxiliary moving contact 202 is installed in the receiving groove 206, the creepage distance between the active contact 9 and the auxiliary moving contact 202 can be effectively increased through the side wall of the receiving groove 206 (i.e., the retaining wall 204), reducing the risk of the active contact 9 and the auxiliary moving contact 202 being broken down under high voltage impact, and effectively improving the safety performance of the relay.

[0066] It is understandable that the push component 1 drives the auxiliary moving contact 202 to move closer to or further away from the auxiliary stationary contact 6, so that the auxiliary moving contact 202 can contact or separate from the two auxiliary stationary contacts 6.

[0067] Relays in some embodiments, see Figure 1 Two auxiliary stationary contacts 6 are spaced apart, and two main stationary contacts 5 are also spaced apart. The auxiliary moving contact assembly 2 is located between the two main stationary contacts 5. (See also...) Figure 12 In this embodiment, the auxiliary moving contact assembly 2 also includes an insulating cover 203, which covers the opening of the receiving groove 206. Covering the opening of the receiving groove 206 with the insulating cover 203 blocks the side of the auxiliary moving contact 202 facing the opening, which can increase the electrical clearance between the main stationary contact 5 and the auxiliary moving contact 202, and at the same time can also prevent the electric arc between the active contact 9 and the main stationary contact 5 from hitting the auxiliary moving contact 202 to a certain extent.

[0068] See Figure 6 , Figure 21 and Figure 22 The insulating cover 203 includes a cover body 2031 and a first protrusion 2032 disposed on the cover body 2031, the first protrusion 2032 protruding from the side of the cover body 2031 facing the receiving groove 206. (See reference...) Figure 24 and Figure 25The auxiliary movable contact 202 includes an auxiliary movable contact piece and two auxiliary movable contacts 2025 disposed on the auxiliary movable contact piece. The two auxiliary movable contacts 2025 are spaced apart along a first direction. The portion of the auxiliary movable contact piece located between the two auxiliary movable contacts 2025 is connected to the first protrusion 2032. In this embodiment, the two auxiliary movable contacts 2025 are spaced apart along the length direction of the auxiliary movable contact piece. (See reference...) Figure 21 and Figure 22 The direction indicated by the Y-arrow is the length direction of the auxiliary moving contact piece; that is, the direction indicated by the Y-arrow is the first direction. Combined with... Figure 1 and Figure 2 Two auxiliary stationary contacts 6 are spaced apart along a first direction, and two main stationary contacts 5 are spaced apart along a second direction. The direction indicated by the X arrow in the figure is the width direction of the auxiliary moving contact piece, that is, the direction indicated by the X arrow is the second direction. The auxiliary moving contact 2025 corresponds one-to-one with the auxiliary stationary contacts 6. In use, the auxiliary moving contact 2025 contacts the corresponding auxiliary stationary contact 6. The first direction is perpendicular to the second direction. In this embodiment, the two auxiliary stationary contacts 6 are spaced apart along the length direction of the auxiliary moving contact piece, and the two main stationary contacts 5 are spaced apart along the width direction of the auxiliary moving contact piece. The first protrusion 2032 provides space for the auxiliary moving contact piece to connect with the insulating cover 203. In specific implementation, the auxiliary moving contact piece and the insulating cover 203 can be assembled into a whole first, and then the whole can be assembled with the insulating base 201. In this way, the retaining wall 204 on the insulating base 201 will not obstruct the installation of the auxiliary moving contact piece, reducing the difficulty of installing the auxiliary moving contact piece 202.

[0069] See Figure 3 and Figure 12In the case where the relay includes two auxiliary stationary contacts 6, the two auxiliary stationary contacts 6 are spaced apart and are respectively used to contact the two auxiliary moving contacts 2025. The auxiliary stationary contacts 6 are located on the side of the auxiliary moving contact assembly 2 facing the slot of the receiving groove 206. In this embodiment, the cover body 2031 is provided with two clearance openings 2033, which correspond one-to-one with the auxiliary stationary contacts 6. The clearance openings 2033 are used to avoid the corresponding auxiliary stationary contacts 6. It can be understood that the auxiliary stationary contacts 6 are fixed relative to the insulating cover 3, and the auxiliary moving contact 202 can move closer to or further away from the auxiliary stationary contacts 6 under the action of the pushing assembly 1. When the auxiliary moving contact 202 moves closer to the auxiliary stationary contacts 6, one end of the auxiliary stationary contact 6 can extend from the slot into the receiving groove 206 and contact the auxiliary moving contact 202. In this embodiment, a clearance opening 2033 is provided on the cover body 2031 to avoid the corresponding auxiliary stationary contact 6. This avoids positional interference between the insulating cover 203 and the auxiliary moving contact 6, while minimizing the obstruction of the auxiliary moving contact 202. Alternatively, in other embodiments, gaps can be formed between the cover body 2031 and the retaining wall 204 at opposite ends, with these gaps serving as clearance openings 2033. Or, a gap can be formed between one end of the cover body 2031 and the retaining wall 204, serving as one clearance opening 2033, and another clearance opening 2033 can be provided on the end of the cover body 2031 facing away from the gap.

[0070] In this embodiment, both clearance openings 2033 are provided on the cover body 2031, and the first protrusion 2032 is located between the two clearance openings 2033.

[0071] The auxiliary moving contact piece is integrally formed with the first protrusion 2032. This design can reduce the amount of shaking of the auxiliary moving contact piece relative to the insulating cover 203 and ensure the consistency of contact between the auxiliary moving contact 2025 on the auxiliary moving contact piece and the auxiliary stationary contact 6.

[0072] See Figure 21 , Figure 22 , Figure 23 , Figure 24 and Figure 25In some embodiments, the auxiliary movable contact 202 includes a connecting section 2023 and two movable contact sections 2022. The movable contact sections 2022 and the connecting section 2023 are distributed along a first direction. The connecting section 2023 connects between the two movable contact sections 2022. The two movable contact sections 2022 are connected to the first protrusion 2032 through the connecting section 2023. Each of the two movable contact sections 2022 is provided with an auxiliary movable contact point 2025. Both movable contact sections 2022 are located on the side of the cover body 2031 facing the receiving groove 206. The size of the movable contact section 2022 in the second direction first decreases and then increases along the first direction. The second direction is perpendicular to the first direction. In the figure, the direction indicated by the Y arrow is the length direction of the auxiliary movable contact piece, and the direction indicated by the X arrow is the width direction of the auxiliary movable contact piece. Specifically, the dimensions of the moving contact 2022 in the second direction (i.e., the direction indicated by the X arrow) decrease first and then increase along the first direction (i.e., the direction indicated by the Y arrow), making the moving contact 2022 have a structure that is wide at both ends and narrow in the middle in the first direction. This can improve the overall flexibility of the moving contact 2022, reduce the transmission of contact stress between the auxiliary moving contact and the auxiliary stationary contact 6 to the connection part between the auxiliary moving contact and the insulating base 201, thereby reducing the risk of the auxiliary moving contact breaking at the connection root with the insulating cover 203, preventing the auxiliary moving contact from breaking and failing, and helping to extend the service life of the relay.

[0073] See Figure 22 , Figure 24 and Figure 25 The movable contact 2022 has a first end 20221 and a second end 20223 at opposite ends in the first direction (i.e., the direction indicated by the Y arrow). The first end 20221 is connected to the connecting section 2023, and the second end 20223 is provided with an auxiliary movable contact 2025. At least one notch 2024 is provided in the portion of the movable contact 2022 between the first end 20221 and the second end 20223, and the notch 2024 is recessed towards the inside of the movable contact 2022. Providing the notch 2024 in the portion of the movable contact 2022 between the first end 20221 and the second end 20223 is beneficial for making the size of the movable contact 2022 in the second direction decrease first and then increase in the first direction, thus reducing the processing difficulty of the auxiliary movable contact 202.

[0074] See Figure 25 The movable contact 2022 is provided with two notches 2024 at the part between the first end 20221 and the second end 20223. The two notches 2024 are located on opposite sides of the movable contact 2022, which helps to balance the stress on both sides of the movable contact 2022 in the second direction and further reduce stress transmission.

[0075] In this embodiment, the two notches 2024 on the same moving contact 2022 are distributed sequentially along the second direction, which effectively improves the overall flexibility of the moving contact 2022, thereby improving the fatigue resistance of the auxiliary moving contact piece.

[0076] In other embodiments, the portion of the movable contact 2022 located between the first end 20221 and the second end 20223 may also be provided with one, three or four notches 2024, and there is no specific limitation on the number of notches 2024 on the same movable contact 2022.

[0077] See Figure 22 and Figure 25 Preferably, the notch 2024 is designed with an arc shape. During the forming or stamping process of the auxiliary moving contact, the stress on the area near the notch 2024 is relatively low, thus reducing the risk of breakage during processing and facilitating production. Furthermore, the smooth transition of the sidewalls of the arc-shaped notch 2024 without sharp edges avoids stress concentration at the corners, preventing breakage. Of course, in practice, the shape of the notch 2024 can be flexibly adjusted as needed, such as being rectangular, triangular, prismatic, or other irregular shapes. No specific limitations are placed on the shape of the notch 2024.

[0078] In this embodiment, the connecting section 2023 and the first protrusion 2032 are integrally formed, so that the insulating cover 203 and the auxiliary moving contact piece form an integral structure, which facilitates the assembly of the auxiliary moving contact piece and the insulating cover 203, and the auxiliary moving contact piece is not easy to fall off the insulating cover 203.

[0079] See Figure 25 In order to enhance the connection strength between the auxiliary moving contact and the insulating cover 203, the dimension D1 of the connecting segment 2023 in the second direction (i.e., the direction indicated by the X arrow) can be set to be greater than the dimension D2 of the moving contact segment 2022 in the second direction, that is: D1 > D2. This is beneficial to increase the contact area between the connecting segment 2023 and the first protrusion 2032 and reduce the risk of the auxiliary moving contact falling off.

[0080] Of course, in actual implementation, the size of the connecting segment 2023 in the second direction can be set to be less than or equal to the size of the moving contact segment 2022 in the second direction as needed. There are no specific restrictions on the size relationship between the connecting segment 2023 and the moving contact segment 2022.

[0081] See Figure 7 The moving contact 2022 has a contact portion on one side in the third direction for contacting the auxiliary stationary contact 6. It should be noted that "one side of the moving contact 2022 in the third direction" refers to the surface of the moving contact 2022 located in the third direction, where the third direction is the thickness direction of the auxiliary moving contact piece (i.e.,...). Figure 7 (The direction pointed to by the Z arrow in the image).

[0082] See Figure 21 , Figure 24 and Figure 25 The moving contact 2022 includes a bent portion 20222 located between the first end 20221 and the second end 20223. Both the first end 20221 and the second end 20223 are straight structures. Setting the first end 20221 and the second end 20223 as straight structures provides better stability. When the auxiliary moving contact 2025 separates from the auxiliary stationary contact 6, it is beneficial to reset the moving contact 2022. In this embodiment, the bent portion 20222 protrudes along the third direction from the side of the connecting section 2023 away from the cover body 2031. When the auxiliary moving contact 2025 contacts the auxiliary stationary contact 6, the moving contact section 2022 will be subjected to stress by the auxiliary stationary contact 6. The bent portion 20222 is provided at the first end 20221 and the second end 20223. The bent portion 20222 can further buffer the contact stress between the auxiliary moving contact piece and the auxiliary stationary contact 6 and prevent the stress from being transmitted towards the connecting section 2023, thereby further reducing the risk of breakage of the auxiliary moving contact 202.

[0083] In this embodiment, each of the two moving contact segments 2022 has an auxiliary moving contact 2025 on its second end 20223. The moving contact segment 2022 contacts the auxiliary stationary contact 3 through the auxiliary moving contact 2025. The auxiliary moving contact 2025 protrudes from the moving contact segment 2022 along a third direction, that is, the contact part is the auxiliary moving contact 2025. Of course, in other embodiments, the contact part can also be a flat part or a concave part. There is no specific limitation on the structure of the contact part. Any structure that can be used to contact the auxiliary stationary contact 3 is acceptable.

[0084] In some embodiments, see Figure 6 , Figure 7 and Figure 16 The auxiliary moving contact assembly 2 also includes a plug-in post 207 connected to the insulating base 201. The plug-in post 207 is located in the receiving groove 206 and protrudes towards the cover body 2031. A plug-in hole 2034 is provided on the first protrusion 2032. The plug-in post 207 is interference-fitted into the plug-in hole 2034, realizing the connection and fixation between the insulating cover 203 and the insulating base 201. The insulating bases 201 do not need to be connected and fixed by metal parts such as rivets or connecting screws, which is beneficial to maintaining good insulation performance of the relay. In order to enhance the connection strength between the insulating cover 203 and the insulating base 201 and prevent the insulating cover 203 from falling off the insulating base 201, adhesive can be applied between the plug-in post 207 and the hole wall of the plug-in hole 2034.

[0085] See Figure 5 , Figure 6 , Figure 8 , Figure 9 , Figure 20 , Figure 21 and Figure 22 The insulating cover 203 also includes a second protrusion 2035 disposed on the cover body 2031. The second protrusion 2035 protrudes from the side of the cover body 2031 facing the receiving groove 206 and is located between the retaining wall 204 and the first protrusion 2032. A first positioning groove 20351 is provided between the second protrusion 2035 and the first protrusion 2032. A positioning protrusion 2011 is disposed on the side of the insulating seat 201 facing the receiving groove 206. The positioning protrusion 2011 is inserted into the first positioning groove 20351. A second positioning groove 2012 is provided between the retaining wall 204 and the positioning protrusion 2011. The second protrusion 2035 is inserted into the second positioning groove 2012. Inserting the positioning protrusion 2011 into the first positioning groove 20351 allows the groove wall of the first positioning groove 20351 to limit the positioning protrusion, and inserting the second protrusion 2035 into the second positioning groove 2012 allows the second positioning groove 2012 to limit the second protrusion 2035. This reduces the amount of shaking of the insulating cover 203 relative to the insulating seat 201, reduces the impact of the insulating cover 203 on the insulating seat 201, thereby reducing the risk of breakage of the insulating seat 201 and improving reliability. Furthermore, since the auxiliary moving contact piece is integrally formed with the insulating cover 203, the limiting of the protrusion by the groove wall of the positioning groove can also reduce the offset of the auxiliary moving contact piece caused by the shaking of the insulating cover 203, which helps to ensure the contact consistency between the auxiliary moving contact piece and the auxiliary stationary contact 6. On the other hand, see... Figure 26 The creepage path on the active contact 9 needs to bypass the sidewall of the second positioning groove 2012, the sidewall of the first positioning groove 20351, and the positioning protrusion 2011 in sequence to reach the auxiliary moving contact 202. Therefore, the creepage path from the active contact 9 to the auxiliary moving contact 202 can be further extended by utilizing the sidewall of the first positioning groove 20351, the sidewall of the second positioning groove 2012, and the positioning protrusion 2011. Figure 26 The dashed arrow in the figure represents the creepage path from the active contact 9 to the auxiliary active contact 202.

[0086] See Figure 12 and Figure 15 The retaining wall 204 includes a main body 2041 and two extensions 2042. Both extensions 2042 are located at the end of the main body 2041 away from the insulating base 201. The insulating cover 203 is located between the two extensions 2042. The retaining wall 204 has a recess 2043 located between the two extensions 2042. The recess 2043 is mainly provided to reserve space for the insulating cover 203 to be installed on the insulating base 201. During installation, it prevents the retaining wall 204 from interfering with the insulating cover 203. In addition, the extensions 2042 can also extend the creepage distance from the active contact 9 to the auxiliary contact 202, thereby improving insulation.

[0087] In some embodiments, the top of the insulating cover 203 is flush with the top of the barrier wall 204, or the top of the insulating cover 203 is lower than the top of the barrier wall 204, in order to minimize the overall size of the relay.

[0088] In some embodiments, see Figure 5 , Figure 6 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 17 and Figure 18 The pushing assembly 1 includes a contact bracket 102 and a pushing component, with the active contact 9 connected to the pushing component. The contact bracket 102 includes a fixed plate 1021, two support arms 1022, and two third protrusions 1023. The two support arms 1022 are respectively connected to opposite ends of the fixed plate 1021 in a first direction (i.e., the direction indicated by the Y arrow). The ends of the two support arms 1022 away from the fixed plate 1021 are connected to the pushing component. The two third protrusions 1023 are respectively disposed on the fixed plate 1021, and are spaced apart along a second direction (i.e., the direction indicated by the X arrow), which is perpendicular to the first direction. In this embodiment, the active contact 9 is disposed on the side of the fixed plate 1021 opposite to the auxiliary moving contact assembly 2, and the contact bracket 102 is a metal component. The auxiliary moving contact assembly 2 also includes two mounting plates 205 spaced apart along the second direction. Both mounting plates 205 are located on the side of the insulating base 201 opposite to the receiving groove 206. Mounting grooves 2051 are respectively provided on opposite sides of the two mounting plates 205. Two third protrusions 1023 correspond one-to-one with the mounting grooves 2051 on the two mounting plates 205, and the third protrusions 1023 are engaged within their respective mounting grooves 2051. (See reference...) Figure 3 and Figure 11 The pushing component includes a spring 103, a spring seat 104 and a push rod 105. The top of the push rod 105 is fixed to the spring seat 104, and the bottom of the push rod 105 is connected to a moving iron core 7. A coil 8 is wound around the outside of the moving iron core 7. The end of the support arm 1022 of the contact bracket 102 away from the fixed plate 1021 is fixed to the spring seat 104.

[0089] The active contact 9 is disposed on one side of the main stationary contact 5. The active contact 9 can move towards or away from the main stationary contact 5 so that it can contact or separate from the main stationary contact 5. The pushing component also includes an upper magnetic conductor 106 and a lower magnetic conductor 101. The upper magnetic conductor 106 is located on the side of the active contact 9 facing the main stationary contact 5, and the lower magnetic conductor 101 is located on the side of the active contact 9 away from the upper magnetic conductor 106. In this embodiment, the upper magnetic conductor 106 is connected to the fixed plate 1021, and the lower magnetic conductor 101 is connected to the active contact 9. There are two upper magnetic conductors 106 and two lower magnetic conductors 101, with one upper magnetic conductor 106 and one lower magnetic conductor 101 corresponding to each other. The active contact 9 is provided with a through hole, and parts of the two lower magnetic conductors 101 extend through the through hole to the side of the active contact 9 facing the fixed plate 1021, so that the lower magnetic conductors 101 can pass through the through hole and approach or contact the upper magnetic conductor 106. The upper magnetic conductor 106 and the lower magnetic conductor 101 form at least two magnetic circuits in the first direction of the active contact 9. By utilizing the magnetic pole surface increased at the corresponding through hole position of each magnetic circuit, when the active contact 9 has a fault large current, an attractive force in the contact pressure direction is generated to resist the electric repulsive force generated by the fault current between the active contact 9 and the lead-out end of the main stationary contact 5. The contact support 102 and the spring seat 104 form a frame. The moving spring assembly, consisting of the active contact 9 and two lower magnetic conductors 101, is installed within the frame formed by the contact support 102 and the spring seat 104 via the spring 103. The top of the push rod 105 passes through the yoke plate 4 and connects to the spring seat 104. The moving iron core 7 is movably disposed on the lower side of the yoke plate 4. In this embodiment, the auxiliary moving contact assembly 2 is connected to the contact support 102 by snapping it into the mounting groove 2051 via the third protrusion 1023. Furthermore, fixing the insulating seat 201 and the contact support 102 by snapping can reduce injection molding costs and facilitate the assembly of the insulating seat 201 and the contact support 102. Furthermore, since the mounting plate 205 protrudes from the side of the insulating base 201 opposite to the receiving groove 206, the creepage distance between the contact support 102 and the active contact 9 can be further extended. Also, the mounting plate 205 prevents arcing from hitting the top of the contact support 102 or the upper magnetic conductor 106, thus maintaining good insulation performance. When the insulating cover 203 also includes a second protrusion 2035 on the cover body 2031, the combined action of the mounting plate 205, the second protrusion 2035, and the first positioning groove 20351 effectively extends the creepage distance, thereby meeting higher insulation requirements. The relay in this embodiment can meet the 1000V insulation requirement. Of course, in other embodiments, the upper magnetic conductor 106 can also be connected to the insulating cover 3.

[0090] In other embodiments, the upper magnetic conductor 106 and the lower magnetic conductor 101 may each be a single entity, with a portion of the lower magnetic conductor 101 extending from the outer side wall of the active contact 9 to the side of the active contact 9 facing the upper magnetic conductor 106.

[0091] See Figure 15 A reinforcing rib 2052 is provided between the mounting plate 205 and the retaining wall 204 to enhance the connection strength between the mounting plate 205 and the retaining wall 204.

[0092] See Figure 11 The pushing component also includes two fixing plates 107. A spring 103 is connected between the active contact 9 and the spring seat 104. The fixing plates 107 correspond one-to-one with the support arms 1022. The two fixing plates 107 are located on opposite sides of the spring 103. The fixing plates 107 are connected to the contact support 102 and the spring seat 104. The fixing plate 107 includes a first segment 1071 and a second segment 1072 connected to the first segment 1071. The first segment 1071 and the second segment 1072 are set at an angle. In this embodiment, the first segment 1071 is connected to the spring seat 104 away from the second segment 1072, and the end of the second segment 1072 away from the first segment 1071 is connected to the corresponding support arm 1022, so that the contact support 102 and the spring seat 104 are connected as a whole. When the push rod 105 moves, it can drive the contact support 102 to move through the fixing plates 107. A support surface 10721 is formed on the side of the second segment 1072 facing the active contact 9. The lower magnetic conductor 101 is connected to the active contact 9. The active contact 9 and the lower magnetic conductor 101 form a moving spring assembly. The support surface 10721 is spaced apart from the moving spring assembly. The support surface 10721 is used to support the moving spring assembly along the path of its movement away from the main stationary contact 5 when a short-circuit current causes the active contact 9 and the main stationary contact 5 to spring apart. It can be understood that when the circuit is short-circuited or overloaded, the electro-repulsive force between the active contact 9 and the main stationary contact 5 is greater than the elastic force exerted by the spring 103 on the active contact 9 and the pushing force of the push rod 105. The active contact 9 and the main stationary contact 5 spring apart, causing the moving spring assembly to move towards the spring seat 104 and further compress the spring 103 until the moving spring assembly abuts against the support surface 10721. The support surface 10721 provides support for the moving spring assembly, preventing the moving spring assembly from moving closer to the spring seat 104. The moving spring assembly is located between the two support arms 1022, and the moving spring assembly slides with the support arms 1022, which allows the moving spring assembly to move relative to the spring seat 104 in the direction of approaching or moving away from the main stationary contact 5, thereby causing the spring 103 to undergo elastic deformation. The two support arms 1022 provide a limiting effect for the sliding of the moving spring assembly.

[0093] The spring seat 104 is a plastic part. In order to enhance the connection strength between the fixing piece 107 and the spring seat 104 and reduce the risk of the fixing piece 107 falling off the spring seat 104, the fixing piece 107 also includes a third segment 1073 that forms an angle with the first segment 1071. The third segment 1073 is connected to the first segment 1071. In this embodiment, the third segment 1073 is parallel to the first segment 1071. The third segment 1073 is injection molded in the spring seat 104, thereby increasing the bonding area between the fixing piece 107 and the spring seat 104.

[0094] It should be noted that the two fixing plates 107 can be an integral structure or a separate structure.

[0095] In this embodiment, the two fixing pieces 107 are an integral structure. In specific implementation, fixing pieces 107 can be formed at opposite ends of a plate. An opening is provided in the middle of the plate. The hole wall is injection molded into a spring seat 104. The opening is located between the third segment 1073 of the plate on the two fixing pieces 107.

[0096] See Figure 13 and Figure 17 Each of the two mounting slots 2051 has a mounting opening at one end in the first direction (i.e., the direction indicated by the Y arrow). The auxiliary moving contact assembly 2 also includes a protruding rib 208 on the insulating base 201. The protruding rib 208 is located between the two mounting plates 205 and is used to abut against the fixing plate 1021. The end of the protruding rib 208 near the mounting opening is provided with a first guide slope 2081. The protruding rib 208 provides a clamping force for the contact bracket 102, so that the third protrusion 1023 is firmly clamped in the mounting slot 2051. The side of the mounting slot 2051 opposite to the mounting opening is the bottom of the mounting slot 2051. The first guide slope 2081 gradually slopes from the mounting opening to the bottom of the slot towards the receiving slot 206. The first guide slope 2081 guides the third protrusion 1023 into the mounting slot 2051, which helps to reduce the difficulty of inserting the third protrusion 1023.

[0097] See Figure 17 , Figure 18 and Figure 19The auxiliary moving contact assembly 2 also includes a stop pin 209 disposed on the protruding rib 208. The stop pin 209 is located on the side of the first guide slope 2081 away from the mounting opening. The fixing plate 1021 is provided with a stop hole 10211. The stop pin 209 is used to be inserted into the stop hole 10211. The end of the stop pin 209 away from the protruding rib 208 is provided with a second guide slope 2091. The second guide slope 2091 gradually slopes from the mounting opening to the bottom of the groove towards the receiving groove 206. When the contact bracket 102 is assembled with the auxiliary moving contact assembly 2, the third protrusion 1023 on the fixing plate 1021 is inserted into the mounting groove 2051 from the mounting opening and then the contact bracket 102 is pushed along the bottom of the groove. The stop pin 209 is guided by the second guide slope 2091 to be inserted into the stop hole 10211, thereby locking the relative position of the contact bracket 102 and the insulating seat 201.

[0098] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0099] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A relay, characterized in that, include: Drive components; An auxiliary moving contact assembly includes an auxiliary moving contact, a baffle wall, and an insulating base. The insulating base is mounted on the pushing assembly, and the baffle wall is disposed on the insulating base. The baffle wall surrounds the insulating base and forms a receiving groove on the insulating base, and the auxiliary moving contact is disposed in the receiving groove.

2. The relay according to claim 1, characterized in that, The auxiliary moving contact assembly also includes an insulating cover, which covers the opening of the receiving groove.

3. The relay according to claim 2, characterized in that, The insulating cover includes a cover body and a first protrusion disposed on the cover body. The first protrusion protrudes from the side of the cover body facing the receiving groove. The auxiliary movable contact includes an auxiliary movable contact piece and two auxiliary movable contacts disposed on the auxiliary movable contact piece. The two auxiliary movable contacts are spaced apart along a first direction. The portion of the auxiliary movable contact piece located between the two auxiliary movable contacts is connected to the first protrusion.

4. The relay according to claim 3, characterized in that, The auxiliary movable contact piece is integrally formed with the first protrusion.

5. The relay according to claim 3, characterized in that, It also includes two spaced-apart auxiliary stationary contacts, which are respectively used to contact the two auxiliary moving contacts. The auxiliary stationary contacts are located on the side of the auxiliary moving contact assembly facing the groove. The cover body and the retaining wall and / or the cover body have a clearance opening. There are two clearance openings, and the two clearance openings correspond one-to-one with the auxiliary stationary contacts. The clearance openings are used to avoid the corresponding auxiliary stationary contacts.

6. The relay according to claim 5, characterized in that, The cover body has clearance openings at its two opposite ends, and the first protrusion is located between the two clearance openings.

7. The relay according to claim 3, characterized in that, The auxiliary moving contact assembly also includes a plug-in post connected to the insulating base. The plug-in post is located in the receiving groove and protrudes towards the cover body. The first protrusion is provided with a plug-in hole, and the plug-in post is interference-fitted into the plug-in hole.

8. The relay according to claim 3, characterized in that, The insulating cover further includes a second protrusion disposed on the cover body. The second protrusion protrudes from the side of the cover body facing the receiving groove, and the second protrusion is located between the baffle and the first protrusion. A first positioning groove is formed between the second protrusion and the first protrusion. A positioning protrusion is disposed on the side of the insulating seat facing the receiving groove. The positioning protrusion is inserted into the first positioning groove. A second positioning groove is formed between the baffle and the positioning protrusion. The first protrusion is inserted into the second positioning groove.

9. The relay according to claim 3, characterized in that, The auxiliary movable contact includes movable contact segments and connecting segments distributed along a first direction. There are two movable contact segments, and the connecting segment connects the two movable contact segments. Both movable contact segments are connected to the first protrusion through the connecting segment, and the auxiliary movable contact point is respectively provided on the two movable contact segments. The size of the movable contact segment in the second direction first decreases and then increases along the first direction, and the second direction is perpendicular to the first direction.

10. The relay according to claim 2, characterized in that, The retaining wall includes a main body and two extensions, both of which are disposed at the end of the main body away from the insulating seat. The insulating cover is located between the two extensions, and the retaining wall forms a notch located between the two extensions.

11. The relay according to claim 2, characterized in that, The side of the insulating cover away from the insulating base is flush with the end of the retaining wall away from the insulating base.

12. The relay according to claim 1, characterized in that, It also includes an active contact. The pushing assembly includes a contact bracket and a pushing component. The active contact is connected to the pushing component. The contact bracket includes a fixed plate, two support arms, and two third protrusions. The two support arms are respectively connected to opposite ends of the fixed plate in a first direction, and the ends of the two support arms away from the fixed plate are connected to the pushing component. The active contact is disposed on the side of the fixed plate away from the auxiliary moving contact assembly. The two third protrusions are respectively disposed on the fixed plate and are spaced apart along a second direction, which is perpendicular to the first direction. The auxiliary moving contact assembly also includes two mounting plates spaced apart along the second direction. The two mounting plates are disposed on the side of the insulating seat away from the receiving groove, and mounting grooves are respectively provided on opposite sides of the two mounting plates. The two third protrusions correspond one-to-one with the mounting grooves on the two mounting plates, and the third protrusions are engaged in the corresponding mounting grooves.

13. The relay according to claim 12, characterized in that, Both of the mounting slots have a mounting opening at one end in the first direction. The auxiliary moving contact assembly also includes a rib disposed on the insulating base. The rib is located between the two mounting plates and is used to abut against the fixing plate. A first guide slope is provided at the end of the rib near the mounting opening.

14. The relay according to claim 13, characterized in that, The auxiliary moving contact assembly also includes a stop pin disposed on the protruding rib. The stop pin is located on the side of the first guide slope away from the mounting opening. The fixing plate is provided with a stop hole, and the stop pin is used to be inserted into the stop hole. The end of the stop pin away from the protruding rib is provided with a second guide slope.

15. The relay according to claim 12, characterized in that, It also includes a main stationary contact located on the side of the active contact, the active contact being able to contact or separate from the main stationary contact, and the pushing assembly further includes an upper magnetic conductor and a lower magnetic conductor, the upper magnetic conductor being located on the side of the active contact facing the main stationary contact, and the lower magnetic conductor being located on the side of the active contact away from the upper magnetic conductor.

16. The relay according to claim 15, characterized in that, The pushing component further includes a spring, a spring seat, and two fixing plates. The spring is connected between the active contact and the spring seat. The two fixing plates are located on opposite sides of the spring seat, and each fixing plate corresponds to a support arm. Each fixing plate includes a first segment and a second segment connected to the first segment. The first segment and the second segment are set at an angle. The end of the first segment away from the second segment is connected to the spring seat, and the end of the second segment away from the first segment is connected to the corresponding support arm. A support surface is formed on the side of the second segment facing the active contact. The lower magnetic conductor is connected to the active contact. The active contact and the lower magnetic conductor form a moving spring assembly. The support surface is spaced apart from the moving spring assembly. The support surface is used to support the moving spring assembly on the path away from the main stationary contact when a short-circuit current causes the active contact and the main stationary contact to spring apart.

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