relay

Abstract

The application relates to a relay, comprising: a housing; a contact piece group arranged in the housing and comprising a moving contact piece group and a static contact piece group arranged oppositely along a Y-axis direction, the moving contact piece group comprising moving contact points, the static contact piece group comprising corresponding static contact points, at least one of two end faces of the static contact points and the moving contact points facing each other being a stepped face, the stepped face being configured to form a local contact area between the static contact points and the moving contact points and a gap area on one side of the local contact area when the static contact points and the moving contact points are in contact. The stepped face type design can make the electric arc jump and move through the stepped structure, lengthen the arc column and thus be beneficial to arc extinguishing. Meanwhile, the gap area increases the arc burning space and is not easy to ablate to the surrounding plastic to cause failure.

Description

Technical Field

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

[0002] A relay is an electronic control device that has a control system (also known as an input circuit) and a controlled system (also known as an output circuit). It is commonly used in automatic control circuits. Its principle is essentially to use a smaller current to control a larger current, acting as an "automatic switch." Therefore, it plays a role in automatic adjustment, safety protection, and circuit switching. Relays control circuits by connecting or separating moving and stationary contacts.

[0003] However, the electric arc generated during the separation of the moving and stationary contacts can easily cause relay failure. Utility Model Content

[0004] Therefore, it is necessary to propose a new type of relay to address the problem that the electric arc generated during disconnection can easily cause relay failure in existing relays.

[0005] A relay includes: a receiving element; and a contact assembly disposed in the receiving element, comprising a moving contact assembly and a stationary contact assembly disposed opposite to each other along the Y-axis direction. The moving contact assembly includes a moving contact, and the stationary contact assembly includes a corresponding stationary contact. At least one of the end faces of the stationary contact and the moving contact facing each other is a stepped surface. The stepped surface is configured such that when the stationary contact and the moving contact are in contact, a partial contact area and a gap area located on one side of the partial contact area are formed between the stationary contact and the moving contact.

[0006] In some embodiments, each moving contact assembly includes a moving contact, the moving contact including two moving points along the X-axis, and the stationary contact assembly includes two stationary contacts along the X-axis, the stationary contacts having stationary points corresponding to the moving contacts.

[0007] In some embodiments, each moving contact group includes two moving contacts arranged along the Z-axis direction, and the moving contact points on each moving contact include a first moving contact and a second moving contact spaced apart along the X-axis direction; the stationary contact includes a first stationary contact and a second stationary contact arranged along the X-axis direction, and the stationary contact points on the first stationary contact correspond to the first moving contacts of the two moving contacts in the Y-axis direction; the stationary contact points on the second stationary contact correspond to the second moving contacts of the two moving contacts in the Y-axis direction.

[0008] In some embodiments, the moving contact has two moving contacts along the X-axis; when each moving contact contacts the corresponding stationary contact, the two local contact areas formed are close to each other, and the two gap areas formed are far apart from each other.

[0009] In some embodiments, the contact assembly further includes a connector connected to a pushing assembly; the pushing assembly is used to push the movable contact assembly to move along the Y-axis direction so that the movable contact assembly contacts or disconnects from the stationary contact assembly; the connector is located between the two movable contacts of the movable contact, and in the X-axis direction, the partial contact area is close to the connector, and the gap area is away from the connector.

[0010] In some embodiments, the two end faces of the stationary contact and the moving contact facing each other are stepped surfaces. In some embodiments, one of the end faces of the stationary contact and the moving contact has an arc-shaped protrusion, and the other has a corresponding square boss.

[0011] In some embodiments, the conductive material is silver or a silver alloy or a composite material based on silver.

[0012] In some embodiments, the relay further includes a driving component and a separator group. The driving component is connected to the moving contact group and is used to drive the moving contact group to move along the Y-axis direction so that the moving contact group contacts or disconnects from the stationary contact group. The separator group is disposed between at least two adjacent moving contact groups. The separator group includes a first insulating separator and a second insulating separator. The first insulating separator is connected to the driving component. The second insulating separator is disposed in the receiving member and corresponds to the first insulating separator. The second insulating separator and the first insulating separator are arranged along the X-axis direction and at least partially overlap.

[0013] In some embodiments, the first insulating separator includes a first sub-separator and a second sub-separator, the first sub-separator and the second sub-separator being located on both sides of the second insulating separator.

[0014] In some embodiments, a slot is formed between the first sub-separator and the second sub-separator, and the second insulating separator extends into the slot. In the X-axis direction, the first sub-separator, the second insulating separator, and the second sub-separator together form a tortuous channel.

[0015] This application designs the end faces of the stationary and moving contacts to form a localized contact area only when they come into contact, while other areas form a gap area. This way, after the stationary and moving contacts make contact, the arc will move left and right in the X-axis direction during disconnection. The stepped surface design allows the arc to jump and move through the stepped structure, lengthening the arc column and thus facilitating arc extinguishing. The gap area increases the arcing space, lengthens the arc column, further facilitating arc extinguishing, and reduces the risk of burning the surrounding plastic and causing failure.

[0016] Furthermore, when each moving contact contacts its corresponding stationary contact, two local contact areas and two gap areas are formed in the X direction. The two local contact areas are close to each other, while the two gap areas are far apart. In this way, in the X-axis direction, within the same contact group, each gap area is farther from the center of the contact group than the local contact areas. In other words, the gap areas are located on the outer side of the contact group, while the local contact areas are located on the inner side. When multiple contact groups are provided, the gap areas of adjacent contact groups are close to each other, increasing the arc space and making it less likely for the arcs formed by adjacent contact groups to come into contact, thus reducing the likelihood of short circuits between different phases.

[0017] Furthermore, when the moving contact comes into contact with the corresponding stationary contact, in the X-axis direction, the local contact area is closer to the connector, while the gap area is farther away from the connector. Through this method, the gap areas of two adjacent contact groups are brought closer together, increasing the arc space and making it less likely for the arcs formed by adjacent contact groups to come into contact, thus reducing the likelihood of short circuits between different phases.

[0018] Furthermore, the second insulating separator is arranged along the X-axis and at least partially overlaps with the first insulating separator. With this arrangement, when there is an external load, during the process of the moving contact group and the stationary contact being disconnected, the flow path of the interphase arc gas changes from a straight line to a broken line, which increases the interphase conduction path of the arc gas, thereby avoiding the breakdown of the insulation between adjacent phases, avoiding interphase short circuits, and ensuring electrical life and withstand voltage requirements. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a relay provided in an embodiment of this application.

[0020] Figure 2 An exploded view of a relay provided in an embodiment of this application.

[0021] Figure 3 for Figure 2 A schematic diagram of the structure of the central driving component and moving contact assembly.

[0022] Figure 4 for Figure 2 A schematic diagram of the structure of the driving component.

[0023] Figure 5 for Figure 1 A schematic diagram of the base and contact assembly of the relay.

[0024] Figure 6 for Figure 5 A top view of a relay, with the moving and stationary contacts in the open state.

[0025] Figure 7 for Figure 6 An enlarged schematic diagram of region A in the middle.

[0026] Figure 8 for Figure 5 A top view of a relay, showing the moving and stationary contacts in contact.

[0027] Figure 9 for Figure 8 Enlarged schematic diagram of region B in the middle.

[0028] Figure 10 for Figure 6 A magnified view of region C in the middle.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Relay; 101. First interval; 102. Second interval; 103. Third interval; 10. Receiving element; 110. Base; 120. Cover; 130. Second insulating separator; 20. Contact assembly; 210. Moving contact assembly; 211. Moving contact; 2111. Moving contact; 220. Stationary contact assembly; 221. Stationary contact; 2211. Stationary contact; 2221a. First stationary contact; 2221b. Second stationary contact; 230. Connector; 240. Stepped surface; 30. Push assembly; 301. Slot; 310. Push clip; 320. Armature component; 330. First insulating separator; 331. First sub-separator; 332. Second sub-separator; 340. Receiving slot; 40. Coil assembly; 50. Current transformer assembly. Detailed Implementation

[0031] 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.

[0032] 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.

[0033] 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 sets, etc., unless otherwise explicitly specified.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] This application discloses a relay 1. The relay 1 is applied in an automatic control circuit, where it receives electrical signals to control the on / off state of an external circuit. Specifically, the relay 1 in this embodiment is a magnetic latching relay, which controls the on / off state of the external circuit by receiving pulse electrical signals. In this embodiment, the pulse electrical signals can be divided into a first pulse electrical signal and a second pulse electrical signal. The first pulse electrical signal is used to control the external circuit to conduct, and the second pulse electrical signal is used to control the external circuit to turn off. After receiving the first pulse electrical signal, the relay 1 switches from the off state to the on state. After the first pulse electrical signal disappears, the relay 1 remains in the on state until it receives the second pulse electrical signal. After receiving the second pulse electrical signal, the relay 1 switches from the on state to the off state. After the second pulse electrical signal disappears, the relay remains in the off state until it receives the first pulse electrical signal. In this embodiment, the external circuit is a three-phase alternating current. Each contact group 20 is an electrical control component used to control the on / off state of one phase of the circuit. The relay 1 needs to control the on / off state of all three phases simultaneously. In other embodiments, the relay 1 can control the on / off state of two phases simultaneously. In other embodiments, relay 1 may not be a magnetic latching relay.

[0038] refer to Figures 1 to 5 A relay 1 according to one embodiment of this application includes a receiving member 10 and a contact group 20. The contact group 20 is disposed in the receiving member 10. It includes a moving contact group 210 and a stationary contact group 220 disposed opposite to each other along the Y-axis direction, wherein the moving contact group 210 includes a moving contact 2111, and the stationary contact group 220 includes a corresponding stationary contact 2211. At least one of the end faces of the stationary contact 2211 and the moving contact 2111 facing each other is a stepped surface 240. Reference Figure 6 and Figure 7 The stepped surface 240 is configured such that when the stationary contact 2211 and the moving contact 2111 are in contact, a partial contact area and a gap area located on one side of the partial contact area are formed between the stationary contact 2211 and the moving contact 2111. In this application, the X-axis direction, Y-axis direction, and Z-axis direction are perpendicular to each other. Specifically, the X-axis direction is the length direction of the accommodating member 10, the Y-axis direction is the width direction of the accommodating member 10, and the Z-axis direction is the height direction of the accommodating member 10.

[0039] The receiving member 10 is used to receive the contact assembly 20. The receiving member 10 is made of an insulating material. In this embodiment, it is injection molded from plastic. Figure 1 and Figure 2 As shown, the receiving member 10 includes a base 110 and a cover 120. The base 110 is used to receive the contact assembly 20.

[0040] The contact group 20 is specifically configured in three groups, arranged along the X-axis. Each contact group 20 can realize the connection or disconnection between the external power supply and the load by the contact group 210 and the stationary contact group 220 in the Y-axis direction. That is, each contact group 20 is used to realize the on-off control of one phase circuit.

[0041] refer to Figure 2 , Figure 3 , Figure 6 and Figure 7 The contact assembly 20 also includes a connector 230 connected to the movable contact assembly 210. The connector 230 is used to connect to the push assembly 30. The push assembly 30 drives the movable contacts of each contact assembly 20 to move along the Y-axis direction via the connector 230.

[0042] refer to Figures 2 to 4 The actuating assembly 30 includes an actuating card 310 and an armature component 320. The actuating card 310 is connected to the movable contact assembly 210. The connector 230 is connected to the actuating card 310.

[0043] The armature component 320 is connected to the push card 310, and can be integrally molded by injection molding. The armature component 320 cooperates with the coil assembly 40 disposed in the receiving member 10. The coil assembly 40 is used to receive pulse electrical signals, and drives the armature component 320 to move linearly along the Y-axis according to the pulse electrical signals, thereby causing the moving contact group 210 to contact or disconnect from the stationary contact group 220, so that the relay 1 can control the external circuit to be turned on or off.

[0044] In addition, the other end of the stationary contact assembly 220 is connected to the current transformer assembly 50 to convert the large current of the main circuit into a small current signal for measurement.

[0045] In this application, both the end face of the stationary contact 2211 and the end face of the moving contact 2111 are stepped surfaces 240. Specifically, the end face of the stationary contact 2211 has an arc-shaped protrusion. The end face of the moving contact 2111 has a corresponding square boss, and the square boss and the arc-shaped boss are correspondingly arranged in the Y-axis direction. Or, conversely, the end face of the stationary contact 2211 has a square boss, and the end face of the moving contact 2111 has a corresponding arc-shaped protrusion. In other embodiments, only the end face of the stationary contact 2211 or the end face of the moving contact 2111 may be set as a stepped surface 240. In other embodiments, the implementation of forming the stepped surface 240 is not limited to the examples above.

[0046] refer to Figures 6 to 9 When the stationary contact 2211 and the moving contact 2111 are in contact, the arc-shaped protrusion and the square boss can make contact, while other areas cannot make contact, thus forming a local contact area and a gap area located on one side of the local contact area between the stationary contact 2211 and the moving contact 2111.

[0047] This application sets the end faces of the stationary contact 2211 and the moving contact 2111 to form a local contact area only when they are in contact, while other positions form a gap area. In this way, after the stationary contact 2211 and the moving contact 2111 are in contact, the arc will move left and right in the X-axis direction when breaking. The stepped surface 240 design allows the arc to jump and move through the stepped structure, which lengthens the arc column and is conducive to the extinguishing of the arc. The gap area increases the arc space, which lengthens the arc column and is conducive to the extinguishing of the arc. It is also less likely to burn the surrounding plastic and cause failure.

[0048] In this application, the moving contact 211 is a composite contact. Specifically, the moving contact 2111 is formed by conductive material welded onto the moving contact 211. The stationary contact 2211 is also formed by conductive material welded onto the moving contact. The conductive material is specifically silver, a silver alloy, or a silver-based composite material, such as silver tin oxide. The composite contact has good conductivity. Furthermore, in this application, the moving contact 2111 and stationary contact 2211 are formed by welding, and the stepped surface 240 can be easily formed by controlling the welding stroke. In this application, the moving contact 211 includes two moving contacts 2111 along the X-axis direction, and the stationary contact group 220 includes two stationary contacts 221 along the X-axis direction. The stationary contacts 221 are provided with stationary contacts 2211 corresponding to the moving contacts 2111. Details are described below.

[0049] refer to Figure 3 , Figure 8 and Figure 9 In this application, each moving contact group 210 is provided with at least one moving contact 211 along the Z-axis direction. Each moving contact 211 has two moving contacts 2111 along the X-axis direction. Each stationary contact group 220 is provided with two stationary contacts 221 along the X-axis direction. Each stationary contact 221 has a stationary contact 2211.

[0050] Specifically, each moving contact group 210 has two moving contacts 211 along the Z-axis. Each moving contact 211 includes two moving contact points 2111 spaced apart along the X-axis, defined as a first moving contact point 2111a and a second moving contact point 2111b, respectively. Each stationary contact group 220 includes two stationary contacts 221 along the X-axis, defined as a first stationary contact point 221a and a second stationary contact point 221b, respectively. The first stationary contact point 221a and the second stationary contact point 221b each include two stationary contact points 2211 along the Z-axis. The two stationary contact points 2211 of the first stationary contact point 221a correspond to the first moving contact points 2111a of the two moving contacts 211 in the Y-axis direction. The two stationary contact points 2211 of the second stationary contact point 221b correspond to the second moving contact points 2111b of the two moving contacts 211 in the Y-axis direction, respectively. In some embodiments, each moving contact group 210 has one moving contact 211. The moving contact 211 includes two moving contacts 2111 spaced apart along the X-axis, defined as the first moving contact 2111a and the second moving contact 2111b, respectively. Each stationary contact group 220 includes two stationary contacts 221 arranged along the X-axis, defined as the first stationary contact 221a and the second stationary contact 221b, respectively. Each stationary contact 221a and each stationary contact 221b has a stationary contact 2211, and the two stationary contacts 2211 respectively make contact with the first moving contact 2111a and the second moving contact 2111b. (Reference) Figure 8 As shown in Figure 9, when each moving contact 211 contacts the corresponding stationary contact 221, two local contact areas and two gap areas are formed in the X direction. Furthermore, the two local contact areas are close to each other, and the two gap areas are far apart from each other.

[0051] In this manner, along the X-axis, each gap area in the same contact group 20 is further away from the center of the contact group 20 than the local contact area. In other words, the gap area is located on the outside of the contact group 20, while the local contact area is located on the inside of the contact group 20.

[0052] In this way, when multiple sets of contact elements 20 are provided, the gap areas of adjacent contact element groups 20 are close to each other, increasing the arc space and making it more difficult for the arcs formed by adjacent contact element groups 20 to come into contact, thus reducing the likelihood of short circuits between different phases. Figure 5 and Figure 6 As shown, the contact group 20 consists of three groups. In the middle contact group 20, the gap area on its left side is close to the gap area of ​​the left contact group 20, and the gap area on its right side is close to the gap area of ​​the right contact group 20. The large arcing space between adjacent contact groups 20 makes it less likely for the arcs formed by adjacent contact groups 20 to come into contact, and reduces the likelihood of short circuits between different phases.

[0053] In some embodiments, in the X-axis direction, the connector 230 is located between the two moving contacts 2111 of the moving contact 211.

[0054] When the moving contact 211 comes into contact with the corresponding stationary contact 221, the two local contact areas formed are close to each other, and the two gap areas formed are far apart from each other. In the X-axis direction, the local contact areas are close to the connector 230, while the gap areas are far away from the connector 230.

[0055] In this way, the gap areas of two adjacent contact groups 20 are brought closer to each other, increasing the arc space and making it more difficult for the arcs formed by adjacent contact groups 20 to come into contact, and making it less likely for short circuits to occur between different phases.

[0056] In some embodiments, reference Figures 3 to 5 and Figure 10 When multiple sets of contact assembly 20 are arranged along the X-axis, the relay 1 also includes a separator assembly. The separator assembly is located between at least two adjacent moving contact assemblies 210. The separator assembly includes a first insulating separator 330 and a second insulating separator 130, which are correspondingly arranged.

[0057] The first insulating separator 330 is connected to the push assembly 30. The second insulating separator is disposed on the receiving member 10 and corresponds to the first insulating separator 330. The second insulating separator 130 and the first insulating separator 330 are arranged along the X-axis direction and at least partially overlap.

[0058] In this application, the second insulating separator 130 is provided correspondingly to the first insulating separator 330, meaning that the second insulating separator 130 and the first insulating separator 330 are used in pairs to form a separator group, which is located between two adjacent moving contact groups 210. In specific implementations, the above-mentioned separator group can be provided between any two adjacent moving contact groups 210, or the above-mentioned separator group can be provided only between two adjacent moving contact groups 210.

[0059] The first insulating separator 330 is disposed on the push card 310. In the X-axis direction, a first insulating separator 330 is disposed between any two adjacent moving contact groups 210.

[0060] The second insulating separator 130 is disposed on the receiving member 10. Specifically, the second insulating separator 130 is disposed on the base 110. A second insulating separator 130 is disposed between any two adjacent moving contact groups 210. In this embodiment, when the moving contact group 210 and the stationary contact group 220 are in contact but not in contact, the second insulating separator 130 and the first insulating separator 330 are arranged along the X-axis direction and at least partially overlap. In simpler terms, the second insulating separator 130 is at least partially located on one side of the first insulating separator 330 in the X-axis direction. On a projection plane perpendicular to the X-axis, the orthographic projection of the second insulating separator 130 at least partially coincides with the orthographic projection of the first insulating separator 330.

[0061] The orthographic projection of the second insulating separator 130 and the orthographic projection of the first insulating separator 330 at least partially overlap, including the case where the overlapping area of ​​their projections is greater than zero, and the case where only the outline edge lines or endpoints of their projections overlap.

[0062] In this application, the relay 1 has a second insulating separator 130 and a first insulating separator 330 arranged along the X-axis and at least partially overlapping. This arrangement, when subjected to an external load, changes the flow path of the interphase arc gas from a straight line to a broken line during the disconnection of the moving contact group 210 and the stationary contact, increasing the interphase conduction path of the arc gas. This prevents the insulation between adjacent phases from breaking down, avoiding interphase short circuits and ensuring electrical life and withstand voltage requirements. Furthermore, the first insulating separator 330 and the second insulating separator 130 are made of high-temperature resistant insulating materials, which are not easily eroded by the arc, thus preventing interphase short circuits and insulation degradation. Compared with existing technologies, adding the second insulating separator 130 and the first insulating separator 330 between phases occupies less space, does not affect the layout restrictions of external component mounting pins, and does not require the entire housing 10 to be made of high-temperature resistant materials, resulting in lower costs. Therefore, this provides a solution that solves the problems of existing technologies and can be applied in actual production.

[0063] In some embodiments, reference Figure 5 , Figure 10 The first insulating separator 330 includes a first sub-separator 331 and a second sub-separator 332, which are located on both sides of the second insulating separator 130. Both the first sub-separator 331 and the second sub-separator 332 can be a single piece or multiple pieces. The second insulating separator 130 can also be a single piece or multiple pieces. Both the first sub-separator 331 and the second sub-separator 332 serve to separate adjacent moving contact groups 210. The placement of the first sub-separator 331 and the second sub-separator 332 on both sides of the moving contact group 210 between adjacent two-phase electrical control components further increases the interphase conduction path for arc gas, thereby preventing the insulation between adjacent phases from being broken down.

[0064] In this embodiment, both the first insulating separator 330 and the second insulating separator 130 are made of high-temperature resistant insulating material. When the first insulating separator 330 includes a first sub-separator 331 and a second sub-separator 332, both the first sub-separator 331 and the second sub-separator 332 are made of high-temperature resistant insulating material.

[0065] The lower temperature resistance limits of the first insulating separator 330 and the second insulating separator 130 are both greater than the lower temperature resistance limit of the push card 310. Optionally, they can withstand temperatures of at least 1000°C. This increases the service life of the first insulating separator 330, the second insulating separator 130, and the relay 1 under high current conditions. Specifically, the high-temperature resistant insulating material is ceramic.

[0066] refer to Figure 3 , Figure 10 A slot 301 is formed between the first sub-separator 331 and the second sub-separator 332. The second insulating separator 130 extends into the slot 301. In the X-axis direction, the first sub-separator 331, the second sub-separator 332, and the second insulating separator 130 together form a tortuous channel. The tortuous channel is specifically U-shaped.

[0067] In this embodiment, when the contact between the moving contact group 210 and the stationary contact group 220 is disconnected, the second insulating separator 130 extends into the slot 301, and there is a gap between the end of the second insulating separator 130 in the Y-axis direction and the bottom of the slot 301, defined as the first gap 101. Simultaneously, a second gap 102 is formed between the second insulating separator 130 and the first sub-separator 331, and a third gap 103 is formed between the second insulating separator 130 and the second sub-separator 332. The first gap 101 connects the second gap 102 and the third gap 103. Thus, the first gap 101, the second gap 102, and the third gap 103 form a U-shaped tortuous channel. Of course, in other embodiments, the U-shaped tortuous channel is not limited to a U-shape.

[0068] Furthermore, when the moving contact group 210 and the stationary contact group 220 are in contact, the second insulating separator 130 and the first insulating separator 330 are arranged along the X-axis and at least partially overlap. Thus, during the disconnection process between the moving contact group 210 and the stationary contact group 220, the flow path of the interphase arc gas is always a broken line, adding an interphase conduction path for the arc gas, thereby preventing the insulation between adjacent phases from breaking down, avoiding interphase short circuits, and ensuring electrical life and withstand voltage requirements. Moreover, during the disconnection process between the moving contact group 210 and the stationary contact group 220, when they are in contact, the overlap between the second insulating separator 130 and the first insulating separator 330 is at its maximum. Therefore, when the arc energy is at its maximum immediately after the disconnection of the moving contact group 210 and the stationary contact group 220, the interphase conduction path for the arc gas is also at its longest, thereby preventing the insulation between adjacent phases from breaking down, avoiding interphase short circuits, and ensuring electrical life and withstand voltage requirements.

[0069] In the above manner, the first sub-separator 331, the second sub-separator 332, and the second insulating separator 130 form multiple insulation between adjacent phases; at the same time, the tortuous channel formed by the first sub-separator 331, the second sub-separator 332, and the second insulating separator 130 increases the path for interphase conduction of arc gas and improves the insulation capability.

[0070] Furthermore, the actuating assembly 30 is also provided with a receiving groove 340. The first sub-separator 331 and the second sub-separator 332 are respectively fixed to the two groove walls of the receiving groove 340 in the X-axis direction. In this way, the receiving groove 340 and the gap between the first sub-separator 331 and the second sub-separator 332 are connected in the Y-axis direction, thereby forming a slot 301 together.

[0071] When the moving contact group 210 moves toward the stationary contact group 220 in the Y-axis direction, the first insulating separator 330 moves along with the moving contact group 210 and always overlaps with the second insulating separator 130 in the X-axis direction. The flow path of the interphase arc gas changes from a straight line to a broken line, increasing the interphase conduction path of the arc gas, thereby preventing the insulation between adjacent phases from being broken down. Furthermore, the second insulating separator 130 can be further inserted into the receiving groove 340, making it more difficult for the arcs formed by adjacent contact groups 20 to come into contact, and making it less likely for short circuits to occur between different phases.

[0072] 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.

[0073] The embodiments described above are merely illustrative of 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: Containing element; A contact assembly, disposed in the receiving member, includes a movable contact assembly and a stationary contact assembly arranged opposite to each other along the Y-axis direction. The movable contact assembly includes a movable contact, and the stationary contact assembly includes a corresponding stationary contact. At least one of the end faces of the stationary contact and the movable contact facing each other is a stepped surface. The stepped surface is configured such that when the stationary contact and the movable contact are in contact, a partial contact area and a gap area on one side of the partial contact area are formed between the stationary contact and the movable contact.

2. The relay according to claim 1, characterized in that, Along the X-axis, the contact assembly is arranged in multiple groups. Each moving contact assembly includes a moving contact, and the moving contact includes two moving contacts along the X-axis. The stationary contact assembly includes two stationary contacts along the X-axis, and the stationary contact has a stationary contact corresponding to the moving contact.

3. The relay according to claim 2, characterized in that, Each moving contact group includes two moving contacts arranged along the Z-axis direction, and the moving contacts on each moving contact include a first moving contact and a second moving contact spaced apart along the X-axis direction; the stationary contact includes a first stationary contact and a second stationary contact arranged along the X-axis direction, and the stationary contact on the first stationary contact corresponds to the first moving contact of the two moving contacts in the Y-axis direction; the stationary contact on the second stationary contact corresponds to the second moving contact of the two moving contacts in the Y-axis direction.

4. The relay according to claim 2 or 3, characterized in that, When each of the moving contact groups comes into contact with the corresponding stationary contact group, the two local contact areas formed are close to each other, and the two gap areas formed are far apart from each other.

5. The relay according to claim 4, characterized in that, The contact assembly further includes a connector connected to a pushing component; the pushing component is used to push the movable contact assembly to move along the Y-axis direction so that the movable contact assembly contacts or disconnects from the stationary contact assembly; the connector is located between the two movable contacts of the movable contact, and in the X-axis direction, the partial contact area is close to the connector, and the gap area is away from the connector.

6. The relay according to claim 1, characterized in that, Both the stationary contact and the moving contact have stepped surfaces facing each other at both ends.

7. The relay according to claim 6, characterized in that, One of the end faces of the stationary contact and the moving contact is provided with an arc-shaped protrusion, and the other is provided with a square protrusion.

8. The relay according to claim 2, characterized in that, The moving contact is formed of conductive material welded to the moving contact; and / or, the stationary contact is formed of conductive material welded to the stationary contact.

9. The relay according to claim 8, characterized in that, The conductive material is silver, a silver alloy, or a composite material with silver as the matrix.

10. The relay according to claim 1, characterized in that, The contact group is arranged in multiple groups along the X-axis direction; the relay also includes a pushing component and a separating component group. The pushing component is connected to the moving contact group and is used to push the moving contact group to move along the Y-axis direction so that the moving contact group contacts or disconnects from the stationary contact group; the separating component group is disposed between at least two adjacent moving contact groups. The separating component group includes a first insulating separating component and a second insulating separating component. The first insulating separating component is connected to the pushing component. The second insulating separating component is disposed in the receiving component and corresponds to the first insulating separating component. The second insulating separating component and the first insulating separating component are arranged along the X-axis direction and at least partially overlap.

11. The relay according to claim 10, characterized in that, The first insulating separator includes a first sub-separator and a second sub-separator, which are located on both sides of the second insulating separator.

12. The relay according to claim 11, characterized in that, A slot is formed between the first sub-separator and the second sub-separator, and the second insulating separator extends into the slot. In the X-axis direction, the first sub-separator, the second insulating separator, and the second sub-separator together form a tortuous channel.

Images