Relay

Abstract

The utility model discloses a relay. The relay comprises a contact cavity, at least one group of contact assemblies and an execution unit, the contact cavity is provided with a contact chamber; the contact assembly comprises two static contact pieces, each static contact piece is provided with a static part arranged at the top of the contact cavity, each static part is provided with an insertion part extending into the contact cavity, each static contact piece is further provided with a contact point part located in the contact cavity, the shortest distance between the two insertion parts is L5, the shortest distance between the contact point parts of the two static contact pieces is L3, and L5 is larger than L3; the execution unit is arranged in the contact cavity and located between the two static components.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric control devices, in particular to a relay. BACKGROUND

[0002] A relay is an electronic control device, which has a control system (also known as an input circuit) and a controlled system (also known as an output circuit), and is usually applied in an automatic control circuit. The relay is actually a kind of "automatic switch" that uses a small current to control a large current. Therefore, it plays a role of automatic adjustment, safety protection, and conversion of circuits in the circuit.

[0003] The relay includes a contact cavity and a contact assembly, the contact assembly includes a moving contact and two stationary contacts, the stationary contacts are arranged on the contact cavity, and the moving contact is movably arranged in the contact cavity and used to contact or separate from the stationary contacts.

[0004] At present, one or more execution units are usually arranged on the outer surface of the contact cavity to realize different functions. For example, the execution unit can be an auxiliary contact monitoring assembly for monitoring the contact state of the moving contact and the stationary contact; the execution unit can also be a temperature monitoring assembly for monitoring the temperature of the contact cavity in real time. However, when the execution unit is arranged on the contact cavity, the volume of the relay is increased, which is not conducive to miniaturization design. CONTENT OF THE UTILITY MODEL

[0005] The embodiment of the present application provides a relay to solve the problem of increased volume of the relay due to the arrangement of the execution unit on the contact cavity.

[0006] The relay of the embodiment of the present application comprises:

[0007] a contact cavity having a contact chamber;

[0008] at least one contact assembly, the contact assembly including two stationary contacts and a moving contact, the stationary contact having a stationary part arranged on the top of the contact cavity and having an insertion part extending into the contact chamber, the stationary contact also having a contact part located in the contact chamber, the shortest distance between the two insertion parts being L5, the shortest distance between the contact parts of the two stationary contacts being L3, and L5>L3; the moving contact being movably arranged in the contact chamber and used to contact or separate from the contact part; and

[0009] an execution unit arranged on the contact cavity and located between the two stationary parts.

[0010] According to some embodiments of the present application, the execution unit comprises an exciter arranged on the contact cavity, at least a part of the exciter is located in the contact cavity and is configured to release an impact object into the contact cavity in response to an excitation signal, the impact object is capable of switching the movable contact from a state of being in conduction with the contact part to a state of being disconnected from the contact part.

[0011] According to some embodiments of the present application, the impact object is a gaseous substance or a solid substance.

[0012] According to some embodiments of the present application, the contact cavity comprises an insulating cover and a yoke plate, the insulating cover is connected to one side surface of the yoke plate in the thickness direction, the insulating cover and the yoke plate enclose the contact chamber, the static contact and the exciter are both arranged on the top of the insulating cover, and the exciter is located on the side of the movable contact away from the yoke plate.

[0013] According to some embodiments of the present application, the exciter is located on the side of the movable contact facing the static part.

[0014] According to some embodiments of the present application, the exciter is arranged on the contact cavity through an adapter.

[0015] According to some embodiments of the present application, the adapter is made of a heat insulation material.

[0016] According to some embodiments of the present application, the heat insulation material is any one of the following: plastic, wood, ceramic.

[0017] According to some embodiments of the present application, the adapter comprises an adapter sleeve and a flange, one axial end of the adapter sleeve is connected to the outer surface of the contact cavity, the flange is connected to the other axial end of the adapter sleeve and protrudes from the outer circumferential surface of the adapter sleeve.

[0018] The exciter comprises a body and a lap joint part, the body is arranged in the adapter sleeve, the lap joint part is connected to the outer circumferential surface of the body and is lapped with the flange.

[0019] According to some embodiments of the present application, the adapter is made of a metal material.

[0020] According to some embodiments of the present application, the exciter is connected to the inner wall surface of the contact cavity.

[0021] According to some embodiments of the present application, the static part further has exposed parts protruding out of the outer surface of the contact cavity, the shortest distance between the two exposed parts is L1, L3≤L1; the execution unit is located between the two exposed parts.

[0022] According to some embodiments of the present application, L1

[0023] According to some embodiments of the present application, the static contact further comprises a first arc guiding portion obliquely arranged relative to the dynamic contact, the first arc guiding portion extends towards the dynamic contact, and is configured to guide the arc flow generated by the dynamic contact and the static contact during contact separation.

[0024] According to some embodiments of the present application, the static contact further comprises an electrically conductive member located in the contact chamber, in the contact assembly, the electrically conductive member of each of the two static contacts is connected to the static part of the static contact; the electrically conductive member has the contact portion and the first arc guiding portion.

[0025] According to some embodiments of the present application, the electrically conductive member further comprises a connecting portion connected to the static part, one end of the first arc guiding portion is connected to the connecting portion, and the other end of the first arc guiding portion is connected to the contact portion.

[0026] According to some embodiments of the present application, the contact cavity comprises an insulating cover and a yoke plate, the insulating cover is connected to one side surface of the yoke plate in the thickness direction, the insulating cover and the yoke plate form the contact chamber, and the static part is arranged on the top of the insulating cover.

[0027] The relay further comprises a push rod member, the push rod member is movable relative to the yoke plate, and the dynamic contact is arranged on the push rod member; the first arc guiding portion extends from the connecting portion towards the center line of the push rod member and the yoke plate.

[0028] According to some embodiments of the present application, the static contact further comprises an electrically conductive member located in the contact chamber, in the contact assembly, the electrically conductive member of each of the two static contacts is connected to the static part of the static contact, and extends along the arrangement direction of the two static parts and towards each other; the electrically conductive members have contact portions at the position close to each other.

[0029] According to some embodiments of the present application, the electrically conductive member comprises a first segment and a second segment connected vertically, the first segment is connected to the static part, and the second segment has the contact portion.

[0030] According to some embodiments of the present application, the contact assembly further comprises a second arc guiding portion connected to the dynamic contact and obliquely arranged relative to the dynamic contact, the second arc guiding portion is configured to guide the arc flow generated by the dynamic contact and the contact portion during contact separation.

[0031] According to some embodiments of the present application, the static contact has a receiving space on a side facing the moving contact, and the second arc-guiding portion extends from the moving contact towards the receiving space and away from the static contact.

[0032] According to some embodiments of the present application, the contact cavity comprises an insulation cover and a yoke plate, the insulation cover is connected to a side surface of the yoke plate in a thickness direction, and the insulation cover and the yoke plate enclose the contact chamber, and the static contact is arranged on a top of the insulation cover.

[0033] The relay further comprises a push rod member, the push rod member is movable relative to the yoke plate, and the moving contact is arranged on the push rod member; and the second arc-guiding portion extends from the moving contact towards a center line of the push rod member and the yoke plate.

[0034] According to some embodiments of the present application, the number of the second arc-guiding portions is two, and the two second arc-guiding portions are respectively connected to two ends of the moving contact in a length direction.

[0035] According to some embodiments of the present application, the relay further comprises an arc-extinguishing assembly arranged in the contact chamber, and configured to extinguish an arc generated by the moving contact and the static contact during contact separation.

[0036] According to some embodiments of the present application, the arc-extinguishing assembly comprises an arc-extinguishing grid assembly, and the arc-extinguishing grid assembly is located on a side of the static contact facing the moving contact.

[0037] According to some embodiments of the present application, the contact cavity comprises an insulation cover and a yoke plate, the insulation cover is connected to a side surface of the yoke plate in a thickness direction, and the insulation cover and the yoke plate enclose the contact chamber, and the static contact is arranged on a top of the insulation cover.

[0038] The arc-extinguishing grid assembly is located on a side of the static contact facing the yoke plate.

[0039] According to some embodiments of the present application, the arc-extinguishing assembly comprises at least one pair of arc-extinguishing grid assemblies, and two arc-extinguishing grid assemblies in each pair are respectively located at two ends of the moving contact in a length direction; an exposed part of the static member protruding from an outer surface of the contact cavity is an exposed part, a shortest distance between two exposed parts is L1, a shortest distance between two arc-extinguishing grid assemblies in each pair is L2, and L2≤L1.

[0040] According to some embodiments of the present application, the arc-extinguishing grid assembly and the static part have an overlapping part in the normal projection of the arc-extinguishing grid assembly and the static part on a target plane, and the target plane is perpendicular to the contact separation direction of the moving contact and the static contact.

[0041] According to some embodiments of the present application, the arc-extinguishing assembly comprises at least one pair of arc-extinguishing grid assemblies, and the two arc-extinguishing grid assemblies in the pair are respectively located at the two ends of the length direction of the moving contact; and the shortest distance between the two arc-extinguishing grid assemblies in the pair is L2.

[0042] The farthest distance between the insertion parts of the two static parts is L4, and L4>L2.

[0043] According to some embodiments of the present application, the execution unit comprises a temperature monitoring assembly and / or an auxiliary contact monitoring assembly.

[0044] According to some embodiments of the present application, all the static contacts are located on the same side of the moving contact.

[0045] The above-mentioned embodiment has at least the following advantages or beneficial effects:

[0046] The relay of the embodiment of the present application has L5>L3, so that sufficient space is reserved between the two insertion parts, and the execution unit can be installed between the insertion parts of the two static parts, so as to make full use of the space between the two insertion parts, and the execution unit does not excessively increase the volume of the relay, which is beneficial to the miniaturization design of the product.

[0047] Further, since L3≤L1, the distance between the exposed parts of the two static contacts can be as large as possible while ensuring the distance between the contact parts of the two static contacts, so that the execution unit can be arranged in the space between the two static parts on the basis of ensuring the electrical distance. In addition, since the distance between the two exposed parts is large, the execution unit can be arranged on the outer surface of the contact cavity and between the two exposed parts, without occupying the space in the contact cavity.

[0048] Further, the relay is provided with an exciter, and the exciter is activated when the excitation signal appears, so that the exciter releases an impact object into the contact cavity, and the impact object can drive the moving contact to switch from the state of being in conduction with the contact part to the state of being disconnected from the contact part. In this way, the exciter plays the role of a "fuse" to timely disconnect the relay when the excitation signal appears, which is beneficial to improving the anti-sticking property of the moving and static contacts and realizing rapid arc-extinguishing.

[0049] Further, the adapter is made of heat-insulating material, so that the heat generated by the reciprocating contact and separation of the moving contact and the static contact can be avoided from being transmitted to the exciter through the contact cavity, thereby avoiding the exciter from being triggered by mistake.

[0050] Further, the adapter is made of metal material, when the exciter is connected with the contact cavity through the adapter, laser welding process is used for connection, which not only ensures the connection strength, but also ensures the sealing of the contact cavity.

[0051] Further, the arc extinguishing assembly is arranged on the side of the static contact piece facing the yoke plate, so as to make full use of the space between the static contact piece and the yoke plate, without occupying too much space of the relay along the arrangement direction of the two static contact pieces, which not only ensures the arc extinguishing effect of the arc extinguishing assembly, but also avoids causing the relay to be too large in size, and is beneficial to the miniaturization design of the product.

[0052] Further, in the contact separation direction of the moving contact piece and the static contact piece, the arc extinguishing grid assembly and the static contact piece have an overlapping part, and the pair of two arc extinguishing grid assemblies are respectively located at both ends of the length direction of the moving contact piece, so that the arc extinguishing grid assembly is as close as possible to the contact position of the moving contact piece and the static contact piece, and then when the arc is generated between the moving contact piece and the static contact piece, the arc can enter the arc extinguishing grid assembly with the shortest path, and the arc extinguishing speed is accelerated.

[0053] Further, the shortest distance between the two exposed parts is L1, and the shortest distance between the pair of two arc extinguishing grid assemblies is L2, since L2≤L1, the arc extinguishing grid assembly is closer to the moving contact piece, so as to accelerate the arc extinguishing speed.

[0054] Further, by setting the first arc guiding part, the arc generated between the moving contact piece and the static contact piece can flow along the extension direction of the first arc guiding part, so that the arc is lengthened, the arc extinguishing time is shortened, the dynamic and static contact points are avoided from being ablated for a long time, and the electrical endurance of the dynamic and static contact points is improved. In addition, with the help of the first arc guiding part, the arc can be transferred from the contact surface of the dynamic and static contact points to the end of the first arc guiding part, thereby reducing the loss of the contact surface of the dynamic and static contact points, and reducing the occurrence of the sharp phenomenon, and ensuring the electrical gap and voltage breakdown resistance between the dynamic and static contact points.

[0055] Further, by setting the second arc guiding part, the arc generated between the moving contact piece and the static contact piece can flow along the extension direction of the second arc guiding part, so that the arc is lengthened, the arc extinguishing time is shortened, the dynamic and static contact points are avoided from being ablated for a long time, and the electrical endurance of the dynamic and static contact points is improved. In addition, with the help of the second arc guiding part, the arc can be transferred from the contact surface of the dynamic and static contact points to the end of the second arc guiding part, thereby reducing the loss of the contact surface of the dynamic and static contact points, and reducing the occurrence of the sharp phenomenon, and ensuring the electrical gap and voltage breakdown resistance between the dynamic and static contact points.

[0056] Furthermore, the first arc-guiding section and the second arc-guiding section form a flared structure, which helps to confine the arc between the first arc-guiding section and the second arc-guiding section, thereby accelerating the arc flow to the arc-extinguishing component and shortening the arc-extinguishing time. Attached Figure Description

[0057] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0058] Figure 1 This is a three-dimensional schematic diagram of a relay according to an embodiment of this application.

[0059] Figure 2 It is along Figure 1 A sectional view after being cut along the AA section line.

[0060] Figure 3 It is a cross-sectional view of the adapter, ceramic cover, static contact parts and frame after assembly.

[0061] Figure 4 This is a 3D schematic diagram of the adapter.

[0062] Figure 5 This is a three-dimensional schematic diagram of the exciter.

[0063] Figure 6 This is a three-dimensional schematic diagram of the arc extinguishing component.

[0064] Figure 7 This is a three-dimensional schematic diagram of the arc-extinguishing grid assembly.

[0065] Figure 8 This is a 3D schematic diagram of the mounting plate.

[0066] Figure 9 This is a three-dimensional schematic diagram of the grid.

[0067] Figure 10 This is a cross-sectional view of a relay according to another embodiment of this application.

[0068] Figure 11 yes Figure 10 A three-dimensional schematic diagram of the assembled conductive and static components.

[0069] Figure 12 This is a cross-sectional view of a relay according to another embodiment of this application.

[0070] The reference numerals in the attached figures are explained as follows:

[0071] 100. Contact cavity

[0072] 101. Contact Chamber

[0073] 110. Insulating cover

[0074] 111. Ceramic cover

[0075] 112. Frame

[0076] 113. Through hole

[0077] 130. Yoke plate

[0078] 200. Contact components

[0079] 210. Static contact components

[0080] 211. Static parts

[0081] 212. Conductive components

[0082] 213. Connecting part

[0083] 214. First guide arc section

[0084] 215. Contact section

[0085] 220. Moving contact components

[0086] 230. Second guide arc section

[0087] 300. Arc extinguishing assembly

[0088] 310. Arc-extinguishing grid assembly

[0089] 311. Installation components

[0090] 3111, Mounting Plate

[0091] 312. Grid

[0092] 313. Card hole

[0093] 314. Connecting part

[0094] 320. Isolation Seat

[0095] 600. Push rod components

[0096] 700, Execution Unit

[0097] 710. Exciter

[0098] 711. Ontology

[0099] 712. Overlap section

[0100] 720. Adapter

[0101] 721. Adapter sleeve

[0102] 722. Flange

[0103] D1, First Direction

[0104] D2, Second Direction

[0105] D3. Third direction Detailed Implementation

[0106] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this application will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0107] It is understood that the terms "comprising" and "having," and any variations thereof, in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to these processes, methods, products, or devices.

[0108] like Figure 1 and Figure 2 As shown, the relay of this embodiment includes a contact cavity 100, at least one set of contact components 200, a push rod member 600, and an arc-extinguishing component 300. The contact cavity 100 has a contact chamber 101. Each set of contact components 200 includes a moving contact 220 and two stationary contacts 210. The stationary contacts 210 are fixedly mounted on the contact cavity 100, and the moving contact 220 is movably disposed within the contact chamber 101 for contacting or separating from the two stationary contacts 210. The push rod member 600 is movable relative to the contact cavity 100, and a portion of the push rod member 600 is located within the contact chamber 101. The moving contact 220 is installed in the portion of the push rod member 600 located within the contact chamber 101. The arc-extinguishing component 300 is disposed within the contact chamber 101 for extinguishing the arc generated during the contact and separation process of the moving contact 220 and the stationary contacts 210.

[0109] In one embodiment, all of the stationary contact 210 are located on the same side of the moving contact 220.

[0110] As an example, the contact cavity 100 includes an insulating cover 110 and a yoke plate 130. The insulating cover 110 covers one side of the yoke plate 130 in the thickness direction, and the insulating cover 110 and the yoke plate 130 form a contact cavity 101. The stationary contact member 210 is fixedly mounted on the insulating cover 110.

[0111] In one embodiment, the insulating cover 110 includes a ceramic cover 111 and a frame 112. The ceramic cover 111 is made of ceramic material and is connected to the yoke plate 130 via the frame 112. A static contact 210 is mounted on the top of the ceramic cover 111.

[0112] As an example, the frame piece 112 can be a ring-shaped metal component, such as one made of an iron-nickel alloy. One end of the frame piece 112 is connected to the opening edge of the ceramic cover 111, and the other end is connected to the yoke plate 130. The frame piece 112 is provided between the ceramic cover 111 and the yoke plate 130 to facilitate the connection between the ceramic cover 111 and the yoke plate 130.

[0113] The number of contact components 200 can be one or more groups. When the number of contact components 200 is more than one group, it can be two, three, four or other groups.

[0114] like Figure 1 and Figure 2 As shown, the following explanation will take two sets of contact components 200 as an example. For ease of explanation, the arrangement direction of the two stationary contact members 210 of one set of contact components 200 is defined as the first direction D1, the movement direction of the push rod member 600 is defined as the second direction D2, and the third direction D3 is defined. The first direction D1, the second direction D2, and the third direction D3 are all perpendicular to each other. In this embodiment, the contact separation direction between the moving contact member 220 and the stationary contact member 210 is the second direction D2.

[0115] Two sets of contact assemblies 200 are arranged along the third direction D3. The positions of the two stationary contacts 210 of one set of contact assemblies 200 correspond to the positions of the two stationary contacts 210 of the other set of contact assemblies 200.

[0116] like Figure 1 and Figure 2 As shown, the stationary contact 210 has a stationary component 211, which is mounted on the top of the ceramic cover 111. The stationary component 211 has an insertion portion 211a and an exposed portion 211b. The insertion portion 211a extends into the contact chamber 101, and the exposed portion 211b extends out of the outer surface of the contact chamber 100. The stationary contact 210 also has a contact portion 215 located within the contact chamber 101. A moving contact 220 of a set of contact assemblies 200 is used to contact or separate from the contact portions 215 of the two stationary contact components 210 of the contact assembly 200. The shortest distance between the two insertion portions 211a is L5, and the shortest distance between the contact portions 215 of the two stationary contact components 210 is L3, where L5 > L3.

[0117] The relay in this embodiment of the application also includes an execution unit 700, which is installed in the contact cavity 100 and located between two stationary parts 211.

[0118] In the relay of this application embodiment, since L5 > L3, sufficient space is reserved between the two insertion parts 211a. The execution unit 700 can be installed between the insertion parts 211a of the two stationary parts 211 to make full use of the space between the two insertion parts 211a. Adding the execution unit 700 will not increase the size of the relay too much, which is beneficial to the miniaturization design of the product.

[0119] Furthermore, the shortest distance between the two exposed portions 211b is L1, where L3 ≤ L1. The execution unit 700 is located between the two exposed portions 211b.

[0120] In the relay of this embodiment, since L3 ≤ L1, the distance between the two exposed portions 211b can be maximized while ensuring that the distance between the contact portions 215 of the two stationary contacts 210 remains unchanged. This allows for the arrangement of the execution unit 700 within the space between the two stationary components 211, while maintaining electrical distance. Furthermore, because the distance between the two exposed portions 211b is large, the execution unit 700 can be arranged on the outer surface of the contact cavity 100, between the two exposed portions 211b, without occupying space within the contact cavity 100.

[0121] In one implementation, L1 < L5.

[0122] In one embodiment, the execution unit 700 can be any one or more of the following: an exciter 710, a temperature monitoring component, and an auxiliary contact monitoring component. When the execution unit 700 includes an exciter 710, the exciter 710 is activated when a threshold current passes through the moving contact 220, thereby timely disconnecting the relay. When the execution unit 700 includes a temperature monitoring component, the temperature of the contact cavity 100 can be monitored in real time. When the execution unit 700 includes an auxiliary contact monitoring component, the contact state between the moving contact 220 and the stationary contact 210 can be monitored.

[0123] It is understood that the execution unit 700 may include at least one of the exciter 710, the temperature monitoring component, and the auxiliary contact monitoring component. That is, the execution unit 700 may include only one of the exciter 710, the temperature monitoring component, and the auxiliary contact monitoring component, or it may include any two of the exciter 710, the temperature monitoring component, and the auxiliary contact monitoring component, or it may include the exciter 710, the temperature monitoring component, and the auxiliary contact monitoring component.

[0124] The following explanation uses execution unit 700 as an example, with actuator 710 as the trigger. Figure 1As shown, in one embodiment, the execution unit 700 includes two actuators 710, which are respectively located between the stationary parts 211 of the two sets of contact components 200.

[0125] like Figure 2 As shown, the exciter 710 is mounted on top of the ceramic cover 111 of the contact cavity 100, and at least a portion of the exciter 710 is located within the contact cavity 101, with the exciter 710 positioned on the side of the moving contact 220 facing away from the yoke plate 130. The exciter 710 is located on the side of the moving contact 220 facing the stationary member 211. The exciter 710 is configured to release an impactor into the contact cavity 101 in response to an excitation signal, the impactor being capable of driving the moving contact 220 to switch from a state of being connected to the contact portion 215 to a state of being disconnected from the contact portion 215.

[0126] In this embodiment, the relay is equipped with an exciter 710. When an excitation signal occurs, the exciter 710 is activated, thereby releasing an impactor into the contact chamber 101. The impactor can drive the moving contact 220 to switch from a state of being connected to the contact portion 215 to a state of being disconnected from the contact portion 215. In this way, the exciter 710 acts as a "fuse," enabling the relay to disconnect in a timely manner when an excitation signal occurs, which helps to improve the anti-sticking properties of the moving and stationary contacts and achieve rapid arc extinguishing.

[0127] In one embodiment, an excitation signal is generated when a threshold current passes through the moving contact 220.

[0128] As an example, the impactor can be a gaseous or solid substance. When the impactor is a gaseous substance, the exciter 710 can release gas into the contact chamber 101 in response to an excitation signal. The gas can impact the contact 220 to disconnect the relay. When the impactor is a solid substance, the exciter 710 can release an object into the contact chamber 101 in response to an excitation signal. This object can impact the contact 220 to disconnect the relay.

[0129] It should be noted that, regardless of whether the impactor is a gaseous or solid substance, the impactor can directly contact the moving contact 220 or indirectly contact the moving contact 220.

[0130] In one embodiment, when the impactor is a gaseous substance, the igniter 710 may include gunpowder. When the threshold current passes through the moving contact 220, the gunpowder is ignited and generates a large amount of gas, forming a gas impact force. This gas impact force can drive the moving contact 220 to move, thereby disconnecting the relay.

[0131] For example, the exciter 710 can be an electric detonator or an electric detonating tube, but is not limited thereto.

[0132] It should be added that the excitation signal can be determined by whether the current flowing through the moving contact 220 reaches a threshold. Specifically, when the current flowing through the moving contact 220 is greater than or equal to the threshold, the exciter 710 receives an excitation signal; when the current flowing through the moving contact 220 is less than the threshold, the exciter 710 does not receive an excitation signal.

[0133] As an example, the magnitude of the current passing through the moving contact 220 can be monitored by using a Hall effect sensor to monitor the magnetic field strength near the moving contact 220 and the stationary contact 210. Based on the correspondence between magnetic field strength and current value, the current value can be derived from the magnetic field strength.

[0134] Of course, the monitoring of threshold current is not limited to the Hall element mentioned above. For example, it can also be a device that directly monitors the current value passing through the moving contact 220 in the current loop.

[0135] like Figure 3 and Figure 4 As shown, the exciter 710 is mounted on the outer wall of the ceramic cover 111 of the contact cavity 100 via an adapter 720. In other words, the adapter 720 is connected to the outer wall of the ceramic cover 111, and the exciter 710 is connected to the adapter 720.

[0136] In the embodiments of this application, the exciter 710 is mounted on the contact cavity 100 via an adapter 720, and is not directly connected to the contact cavity 100.

[0137] In one embodiment, the adapter 720 is made of a metallic material. The metallic material of the adapter 720 facilitates laser welding when the exciter 710 is connected to the contact cavity 100 via the adapter 720, ensuring both connection strength and the sealing of the contact cavity 100.

[0138] In another embodiment, the adapter 720 is made of a heat-insulating material. This prevents the heat generated by the reciprocating contact and separation of the moving contact 220 and the stationary contact 210 from being transferred to the exciter 710 through the contact cavity 100, thereby preventing the exciter 710 from being accidentally triggered.

[0139] As an example, the insulation material can be any of the following: plastic, wood, or ceramic.

[0140] like Figures 3 to 5As shown, the top of the ceramic cover 111 has a through hole 113, which communicates with the contact chamber 101. The adapter 720 includes an adapter sleeve 721 and a flange 722. One axial end of the adapter sleeve 721 is connected to the outer surface of the contact chamber 100, and the adapter sleeve 721 communicates with the through hole 113. The flange 722 is connected to the other axial end of the adapter sleeve 721 and protrudes from the outer peripheral side of the adapter sleeve 721. The exciter 710 includes a body 711 and an overlapping portion 712. The body 711 passes through the adapter sleeve 721 and the through hole 113, and the overlapping portion 712 is connected to the outer peripheral side of the body 711 and overlaps the flange 722.

[0141] In another embodiment, the adapter 720 may also consist of only an adapter sleeve 721, one axial end of which is connected to the top of the ceramic cover 111 and the other end is connected to the exciter 710.

[0142] In another embodiment, a flange 722 is provided at each of the two axial ends of the adapter sleeve 721, one flange 722 is connected to the top of the ceramic cover 111, and the other flange 722 is connected to the exciter 710.

[0143] It is understood that the adapter 720 and the ceramic cover 111, as well as the adapter 720 and the exciter 710, can be connected by welding, gluing, or other methods, and this application does not impose any special limitations on this.

[0144] Please return to the reference. Figure 2 Each stationary contact 210 also includes a conductive element 212. In the contact assembly 200, the conductive elements 212 of the two stationary contacts 210 are respectively connected to the stationary parts 211 of the two stationary contacts 210 and extend along the arrangement direction of the two stationary parts 210 and toward each other. The two conductive elements 212 have contact portions 215 at the positions where they are close to each other. The contact portions 215 of the two conductive elements 212 are used to contact or separate from the moving contact 220.

[0145] In one embodiment, the two conductive elements 212 extend in a direction that brings them closer to each other.

[0146] It should be noted that "the direction of mutual approach" refers to the overall tendency of the two conductive components 212 to approach each other, which may include, but is not limited to: the two conductive components 212 approaching each other along a straight line, the two conductive components 212 approaching each other along a curve, and a part of the two conductive components 212 approaching each other, etc.

[0147] In one embodiment, the conductive element 212 is flat, and one end of the two conductive elements 212 is connected to two stationary parts 211 respectively, and extends from the corresponding stationary part 211 along the first direction D1 and toward each other.

[0148] Please continue reading. Figure 2 The arc-extinguishing component 300 is located on the side of the stationary contact 210 facing the moving contact 220. In this embodiment of the application, the arc-extinguishing component 300 is located on the side of the stationary contact 210 facing the yoke plate 130.

[0149] In the relay of this application embodiment, the arc extinguishing component 300 is arranged on the side of the stationary contact 210 facing the moving contact 220, so as to make full use of the space on the side of the stationary contact 210 facing the moving contact 220, without occupying too much space of the relay along the arrangement direction of the two stationary contacts 210. This ensures the arc extinguishing effect of the arc extinguishing component 300, and avoids making the relay too large, which is conducive to the miniaturization design of the product.

[0150] like Figure 6 As shown, the arc-extinguishing assembly 300 includes an isolation seat 320 and at least one pair of arc-extinguishing grid assemblies 310. The isolation seat 320 is disposed within the contact chamber 101, for example, the isolation seat 320 is fixedly connected to the yoke plate 130, and the arc-extinguishing grid assemblies 310 are mounted on the isolation seat 320. The two paired arc-extinguishing grid assemblies 310 are respectively located on the side of the two stationary contacts 210 of the contact assembly 200 facing the yoke plate 130, and are used to extinguish the arc generated by the moving contact 220 and the two stationary contacts 210.

[0151] In the embodiments of this application, the two paired arc-extinguishing grid assemblies 310 are respectively located on the side of the stationary part 211 of the two stationary contacts 210 of the contact assembly 200 facing the yoke plate 130.

[0152] In one embodiment, the number of arc-extinguishing grid assemblies 310 is the same as the number of stationary contacts 210. For example, the number of both arc-extinguishing grid assemblies 310 and stationary contacts 210 is four, but this is not a limitation.

[0153] Of course, in other embodiments, when the number of static contacts 210 is four, the number of arc extinguishing grid components 310 included in the arc extinguishing assembly 300 can also be two. The two arc extinguishing grid components 310 are arranged along the first direction D1, and each arc extinguishing grid component 310 has a larger size along the third direction D3 so as to cover multiple moving contacts 220.

[0154] like Figure 2 As shown, the two paired arc-extinguishing grid assemblies 310 are located at both ends of the length direction (first direction D1) of the moving contact 220. The corresponding arc-extinguishing grid assembly 310 and the stationary part 211 of the stationary contact 210 have an overlapping portion on a target plane, and the target plane is perpendicular to the contact separation direction (second direction D2) of the moving contact 220 and the stationary contact 210.

[0155] In the embodiments of this application, in the contact separation direction of the moving contact 220 and the stationary contact 210, the arc extinguishing grid assembly 310 and the stationary component 211 have an overlapping portion, and the two paired arc extinguishing grid assemblies 310 are respectively located at both ends of the length direction of the moving contact 220, so that the arc extinguishing grid assembly 310 is as close as possible to the contact position of the moving contact 220 and the stationary contact 210, and when an electric arc is generated between the moving contact 220 and the stationary contact 210, the electric arc can enter the arc extinguishing grid assembly 310 with the shortest path, thereby accelerating the arc extinguishing speed.

[0156] In one embodiment, the conductive component 212 and the stationary component 211 are connected separately, for example by welding, riveting, interference fit, or other methods.

[0157] Of course, in other embodiments, the conductive element 212 and the stationary element 211 can also be integrally connected, that is, the stationary contact element 210 is a single piece.

[0158] In one embodiment, the conductive element 212 can be connected to the bottom of the stationary element 211 or to the side of the stationary element 211. Of course, the conductive element 212 can also be connected to both the bottom and the side of the stationary element 211 at the same time. This application does not limit this.

[0159] like Figure 2 As shown, the shortest distance between the exposed portions 211b of the two stationary contacts 210 of the contact assembly 200 is L1, and the shortest distance between the two paired arc-extinguishing grid assemblies 310 is L2, where L2≤L1.

[0160] In this embodiment of the application, since L2≤L1, the arc extinguishing grid assembly 310 is closer to the moving contact 220 to accelerate the arc extinguishing speed.

[0161] In one embodiment, the farthest distance between the insertion portions 211a of the two stationary components 211 is L4, where L4 > L2.

[0162] In this embodiment of the application, since L4 > L2, the arc extinguishing grid assembly 310 can be arranged below the insertion part 211a to improve the space utilization rate within the contact cavity 100, which is beneficial for product miniaturization design.

[0163] The conductive element 212 can be connected to the insertion part 211a.

[0164] like Figure 7 and Figure 8 As shown, the arc extinguishing grid assembly 310 includes a mounting member 311 and a plurality of grid plates 312. The plurality of grid plates 312 are mounted on the mounting member 311 and arranged along the contact separation direction (second direction D2) between the moving contact member 220 and the stationary contact member 210. There is a gap between two adjacent grid plates 312.

[0165] like Figure 7 As shown, in one embodiment, the mounting member 311 includes two oppositely arranged mounting plates 3111, and a plurality of grid plates 312 are mounted between the two mounting plates 3111.

[0166] like Figure 8 and Figure 9 As shown, in one embodiment, the mounting plate 3111 and the grid plate 312 have a locking hole 313 on one of them and a locking part 314 on the other, the locking part 314 being engaged into the locking hole 313.

[0167] For example, the mounting plate 3111 has a snap-fit ​​hole 313 and the grid plate 312 has a snap-fit ​​portion 314; or, the mounting plate 3111 has a snap-fit ​​portion 314 and the grid plate 312 has a snap-fit ​​hole 313.

[0168] It should be noted that the connection between the grid plate 312 and the mounting component 311 is not limited to a snap-fit ​​method. For example, multiple slots can be provided on the mounting component 311, and the grid plate 312 can be inserted into the slots.

[0169] like Figure 10 and Figure 11 As shown, the similarities between the relay of the second embodiment of this application and the relay of the first embodiment described above will not be repeated, but the differences are as follows:

[0170] The conductive element 212 of the stationary contact 210 includes a first arc-guiding portion 214 arranged at an angle relative to the moving contact 220. The first arc-guiding portion 214 extends toward the moving contact 220 and is configured to guide the flow of the electric arc generated during the contact separation process between the moving contact 220 and the stationary contact 210 to flow toward the arc-extinguishing assembly 300.

[0171] In this embodiment, by providing a first arc-guiding portion 214, the electric arc generated between the moving contact 220 and the stationary contact 210 can flow along the extension direction of the first arc-guiding portion 214, thereby lengthening the arc, shortening the arc extinguishing time, preventing the arc from burning the moving and stationary contacts for a long time, and improving the electrical durability of the moving and stationary contacts. Furthermore, with the help of the first arc-guiding portion 214, the arc can be transferred from the contact surface of the moving and stationary contacts to the end of the first arc-guiding portion 214, thereby reducing the wear of the contact surface of the moving and stationary contacts, reducing the occurrence of arc spikes, and ensuring the electrical clearance and withstand voltage breakdown capability between the moving and stationary contacts.

[0172] Among them, the phenomenon of sharpening refers to the phenomenon that, under long-term operation or high load, the contact surface develops sharp protrusions or deformations due to current, electric arc or mechanical wear.

[0173] The first guide arc portion 214 can extend along a straight line or along a curve, and this application does not limit it in this regard.

[0174] The conductive component 212 also includes a connecting portion 213, which is connected to the stationary component 211. One end of the first arc-shaped portion 214 is connected to the connecting portion 213, and the other end of the first arc-shaped portion 214 is connected to the contact portion 215. The moving contact component 220 is used to contact or separate from the contact portion 215. The first arc-shaped portion 214 extends from the connecting portion 213 toward the center line of the push rod component 600 and the yoke plate 130.

[0175] As can be seen from the present application embodiment, the conductive member 212 has an inclined first arc-guiding portion 214, and the first arc-guiding portion 214 extends from the connecting portion 213 toward the direction close to the moving contact member 220. At the same time, the end of the conductive member 212 away from the stationary member 211 has a contact portion 215. The arrangement of the conductive member 211 can not only ensure the distance between the two stationary members 211 to provide a sufficiently long electrical distance and arrange other components, but also the first arc-guiding portion 214 of the conductive member 211 can guide the arc so that the arc flows to the arc-extinguishing assembly 300 in time. At the same time, the conductive member 212 has reserved space on the side facing the moving contact member 220, which can be used to arrange other components, improving the space utilization of the relay and facilitating the miniaturization design of the product.

[0176] like Figure 10 As shown, the contact assembly 200 also includes a second arc guide portion 230, which is connected to the moving contact member 220 and is arranged at an angle relative to the moving contact member 220. The second arc guide portion 230 is configured to guide the arc flow to the arc extinguishing grid assembly 310.

[0177] In this embodiment, by providing a second arc-guiding portion 230, the electric arc generated between the moving contact 220 and the stationary contact 210 can flow along the extension direction of the second arc-guiding portion 230, thereby lengthening the arc, shortening the arc extinguishing time, preventing the arc from burning the moving and stationary contacts for a long time, and improving the electrical durability of the moving and stationary contacts. Furthermore, with the help of the second arc-guiding portion 230, the arc can be transferred from the contact surface of the moving and stationary contacts to the end of the second arc-guiding portion 230, thereby reducing the wear on the contact surface of the moving and stationary contacts, reducing the occurrence of arc spikes, and ensuring the electrical clearance and withstand voltage breakdown capability between the moving and stationary contacts.

[0178] like Figure 10 As shown, the stationary contact 210 has a receiving space 102 on the side facing the moving contact 220, and the second arc guide portion 230 automatically contacts the 220, extending obliquely towards the receiving space 102 and away from the stationary contact 210. In this embodiment, the receiving space 102 is used to arrange the arc extinguishing grid assembly 310.

[0179] In one embodiment, the second guide arc portion 230 is integrally connected with the moving contact member 220.

[0180] Of course, in other embodiments, the second guide arc portion 230 and the moving contact member 220 can also be connected separately, for example by riveting, welding, interference fit, etc.

[0181] like Figure 10 As shown, the automatic contact member 220 of the second arc guide portion 230 extends in a direction away from the center line of the push rod member 600 and close to the yoke plate 130. One end of the second arc guide portion 230 is connected to the moving contact member 220, and the other end of the second arc guide portion 230 is close to the end of the arc extinguishing grid assembly 310 near the yoke plate 130.

[0182] As an example, there may be two second arc guide portions 230, which are respectively connected to the two ends of the moving contact member 220 in the length direction, and both the second arc guide portions 230 and the moving contact member 220 are located between a pair of arc extinguishing grid assemblies 310.

[0183] like Figure 10 As shown, the tilt direction of the first guide arc portion 214 is arranged at an angle to the tilt direction of the second guide arc portion 230. This angle can be an acute angle or an obtuse angle.

[0184] In the embodiments of this application, the first arc guiding portion 214 and the second arc guiding portion 230 form a flared structure, which helps to confine the arc between the first arc guiding portion 214 and the second arc guiding portion 230, thereby accelerating the arc flow to the arc extinguishing component 300 and shortening the arc extinguishing time.

[0185] like Figure 12 As shown, the similarities between the relay of the third embodiment and the relay of the second embodiment will not be repeated here, but the differences are as follows:

[0186] The conductive element 212 includes a first segment 2121 and a second segment 2122 that are vertically connected. The first segment 2121 is connected to the stationary component 211, and the end of the second segment 2122 away from the first segment 2121 has a contact portion 215.

[0187] The exciter 210 is connected to the inner wall of the contact cavity 100. For example, the exciter 210 is connected to the inner wall of the contact cavity 100 via an adapter 720.

[0188] In summary, the relays of the embodiments of this application have at least the following advantages and beneficial effects:

[0189] In the relay of this application embodiment, since L5 > L3, sufficient space is reserved between the two insertion parts 211a. The execution unit 700 can be installed between the insertion parts 211a of the two stationary parts 211 to make full use of the space between the two insertion parts 211a. Adding the execution unit 700 will not increase the size of the relay too much, which is beneficial to the miniaturization design of the product.

[0190] Furthermore, since L3 ≤ L1, while ensuring that the distance between the contact portions 215 of the two stationary contacts 210 remains unchanged, the distance between the exposed portions 211b of the two stationary contacts 210 can be increased as much as possible. In this way, while ensuring electrical distance, the execution unit 700 can be arranged in the space between the two stationary components 211. In addition, since the distance between the two exposed portions 211b is large, the execution unit 700 can be arranged on the outer surface of the contact cavity 100 and located between the two exposed portions 211b, without occupying the space inside the contact cavity 100.

[0191] Furthermore, the relay is equipped with an exciter 710. When an excitation signal is received, the exciter 710 is activated, thereby releasing an impactor into the contact chamber 101. The impactor drives the moving contact 220 to switch from a state of being connected to the contact portion 215 to a state of being disconnected from the contact portion 215. In this way, the exciter 710 acts as a "fuse," enabling the relay to disconnect promptly when an excitation signal is received, which helps to improve the anti-sticking properties of the moving and stationary contacts and achieve rapid arc extinguishing.

[0192] Furthermore, the adapter 720 is made of heat-insulating material, which can prevent the heat generated by the reciprocating contact and separation of the moving contact 220 and the stationary contact 210 from being transferred to the exciter 710 through the contact cavity 100, thereby preventing the exciter 710 from being accidentally triggered.

[0193] Furthermore, the adapter 720 is made of metal material. When the exciter 710 is connected to the contact cavity 100 through the adapter 720, it is convenient to use laser welding process for connection, which ensures both connection strength and the sealing of the contact cavity 100.

[0194] Furthermore, the arc-extinguishing component 300 is arranged on the side of the stationary contact 210 facing the moving contact 220, so as to make full use of the space on the side of the stationary contact 210 facing the moving contact 220, without occupying too much space of the relay along the arrangement direction of the two stationary contacts 210. This ensures the arc-extinguishing effect of the arc-extinguishing component 300, while avoiding making the relay too large, which is conducive to the miniaturization design of the product.

[0195] Furthermore, in the contact separation direction of the moving contact 220 and the stationary contact 210, the arc-extinguishing grid assembly 310 overlaps with the stationary contact 210, and the two paired arc-extinguishing grid assemblies 310 are located at both ends of the length direction of the moving contact 220, so that the arc-extinguishing grid assembly 310 is as close as possible to the contact position of the moving contact 220 and the stationary contact 210. Thus, when an electric arc is generated between the moving contact 220 and the stationary contact 210, the electric arc can enter the arc-extinguishing grid assembly 310 with the shortest path, thereby accelerating the arc extinguishing speed.

[0196] Furthermore, the shortest distance between the stationary parts 211 of the two stationary contacts 210 of the contact assembly 200 is L1, and the shortest distance between the two paired arc-extinguishing grid assemblies 310 is L2. Since L2≤L1, the arc-extinguishing grid assembly 310 is closer to the moving contact 220 to accelerate the arc extinguishing speed.

[0197] Furthermore, by providing the first arc-guiding portion 214, the electric arc generated between the moving contact 220 and the stationary contact 210 can flow along the extension direction of the first arc-guiding portion 214, thereby lengthening the arc, shortening the arc extinguishing time, preventing the arc from burning the moving and stationary contacts for a long time, and improving the electrical durability of the moving and stationary contacts. In addition, with the help of the first arc-guiding portion 214, the arc can be transferred from the contact surface of the moving and stationary contacts to the end of the first arc-guiding portion 214, thereby reducing the loss of the contact surface of the moving and stationary contacts, reducing the occurrence of arc spikes, and ensuring the electrical clearance and withstand voltage breakdown capability between the moving and stationary contacts.

[0198] Furthermore, by providing the second arc-guiding portion 230, the electric arc generated between the moving contact 220 and the stationary contact 210 can flow along the extension direction of the second arc-guiding portion 230, thereby lengthening the arc, shortening the arc extinguishing time, preventing the arc from burning the moving and stationary contacts for a long time, and improving the electrical durability of the moving and stationary contacts. In addition, with the help of the second arc-guiding portion 230, the arc can be transferred from the contact surface of the moving and stationary contacts to the end of the second arc-guiding portion 230, thereby reducing the loss of the contact surface of the moving and stationary contacts, reducing the occurrence of arc spikes, and ensuring the electrical clearance and withstand voltage breakdown capability between the moving and stationary contacts.

[0199] Furthermore, the first arc-guiding portion 214 and the second arc-guiding portion 230 form a flared structure, which helps to confine the arc between the first arc-guiding portion 214 and the second arc-guiding portion 230, thereby accelerating the arc flow to the arc-extinguishing assembly 300 and shortening the arc-extinguishing time.

[0200] It is understood that the various embodiments / implementations provided in this application can be combined with each other without creating contradictions, and will not be described one by one here.

[0201] In the embodiments of this application, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise expressly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0202] In the description of the embodiments of the application, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the application and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the application.

[0203] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the claims. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0204] The above are merely preferred embodiments of the application examples and are not intended to limit the application examples. For those skilled in the art, the application examples can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the application examples should be included within the protection scope of the application examples.

Claims

1. A relay, characterized in that, include: The contact cavity has a contact chamber. At least one set of contact components, the contact components including two stationary contacts and a movable contact, the stationary contacts having a stationary part mounted on the top of the contact cavity and having an insertion part extending into the contact cavity, the stationary contacts also having a contact part located within the contact cavity, the shortest distance between the two insertion parts being L5, the shortest distance between the contact parts of the two stationary contacts being L3, L5 > L3; the movable contact is movably disposed within the contact cavity for contacting or separating from the contact part; as well as The execution unit is installed in the contact cavity and is located between the two stationary components.

2. The relay according to claim 1, characterized in that, The execution unit includes an exciter mounted on the contact cavity, at least a portion of which is located within the contact cavity and configured to release an impactor into the contact cavity in response to an excitation signal. The impactor is capable of switching the moving contact from a state of being connected to the contact portion to a state of being disconnected from the contact portion.

3. The relay according to claim 2, characterized in that, The impactor is a gaseous or solid substance.

4. The relay according to claim 2, characterized in that, The contact cavity includes an insulating cover and a yoke plate. The insulating cover is connected to one side surface of the yoke plate in the thickness direction. The insulating cover and the yoke plate form the contact cavity. The static contact and the exciter are both installed on the top of the insulating cover, and the exciter is located on the side of the moving contact opposite to the yoke plate.

5. The relay according to claim 2, characterized in that, The exciter is located on the side of the moving contact member facing the stationary member.

6. The relay according to claim 2, characterized in that, The exciter is mounted on the contact cavity via an adapter.

7. The relay according to claim 6, characterized in that, The adapter is made of heat-insulating material.

8. The relay according to claim 7, characterized in that, The heat insulation material is any one of the following: plastic, wood, or ceramic.

9. The relay according to claim 6, characterized in that, The adapter includes an adapter sleeve and a flange. One axial end of the adapter sleeve is connected to the outer surface of the contact cavity, and the flange is connected to the other axial end of the adapter sleeve and protrudes from the outer peripheral side of the adapter sleeve. The exciter includes a body and an overlapping portion. The body is inserted into the adapter sleeve, and the overlapping portion is connected to the outer peripheral side of the body and overlaps the flange.

10. The relay according to claim 6, characterized in that, The adapter is made of metal.

11. The relay according to claim 2, characterized in that, The exciter is connected to the inner wall of the contact cavity.

12. The relay according to claim 1, characterized in that, The stationary component also has an exposed portion extending out of the outer surface of the contact cavity, and the shortest distance between the two exposed portions is L1, L3≤L1; the execution unit is located between the two exposed portions.

13. The relay according to claim 12, characterized in that, L1 < L5.

14. The relay according to any one of claims 1-13, characterized in that, The stationary contact further includes a first arc-guided portion arranged at an angle relative to the moving contact, the first arc-guided portion extending toward the moving contact and configured to guide the flow of electric arc generated by the moving contact and the stationary contact during contact separation.

15. The relay according to claim 14, characterized in that, The static contact further includes a conductive element located within the contact chamber. In the contact assembly, the conductive elements of the two static contacts are respectively connected to the static components of the two static contacts. The conductive element has the contact portion and the first arc-guiding portion.

16. The relay according to claim 15, characterized in that, The conductive component further includes a connecting portion, which is connected to the stationary component. One end of the first arc-guided portion is connected to the connecting portion, and the other end of the first arc-guided portion is connected to the contact portion.

17. The relay according to claim 16, characterized in that, The contact cavity includes an insulating cover and a yoke plate. The insulating cover is connected to one side surface of the yoke plate in the thickness direction. The insulating cover and the yoke plate form the contact cavity. The stationary component is installed on the top of the insulating cover. The relay further includes a push rod component that is movable relative to the yoke plate, and the moving contact is mounted on the push rod component; the first guide arc portion extends from the connecting portion toward the center line of the push rod component and the yoke plate.

18. The relay according to any one of claims 1-13, characterized in that, The static contact also includes a conductive element located in the contact chamber. In the contact assembly, the conductive elements of the two static contacts are respectively connected to the static components of the two static contacts and extend along the arrangement direction of the two static components and toward each other. The two conductive elements have contact portions at their positions close to each other.

19. The relay according to claim 18, characterized in that, The conductive component includes a first segment and a second segment connected vertically, the first segment being connected to the stationary component, and the second segment having the contact portion.

20. The relay according to any one of claims 1-13, characterized in that, The contact assembly further includes a second arc guide portion connected to the moving contact and arranged at an angle relative to the moving contact. The second arc guide portion is configured to guide the flow of electric arc generated by the moving contact and the contact portion during contact separation.

21. The relay according to claim 20, characterized in that, The stationary contact has a receiving space on the side facing the moving contact, and the second guide arc extends obliquely from the moving contact toward the receiving space and away from the stationary contact.

22. The relay according to claim 20, characterized in that, The contact cavity includes an insulating cover and a yoke plate. The insulating cover is connected to one side surface of the yoke plate in the thickness direction. The insulating cover and the yoke plate form the contact cavity. The static contact is installed on the top of the insulating cover. The relay further includes a push rod component that is movable relative to the yoke plate, and a movable contact is mounted on the push rod component; the second guide arc portion extends from the movable contact in a direction away from the center line of the push rod component and close to the yoke plate.

23. The relay according to claim 20, characterized in that, There are two second guide arc portions, and the two second guide arc portions are respectively connected to the two ends of the moving contact member in the length direction.

24. The relay according to any one of claims 1-13, characterized in that, The relay also includes an arc-extinguishing component disposed in the contact chamber, used to extinguish the arc generated by the moving contact and the stationary contact during the contact separation process.

25. The relay according to claim 24, characterized in that, The arc extinguishing assembly includes an arc extinguishing grid assembly, which is located on the side of the stationary contact member facing the moving contact member.

26. The relay according to claim 25, characterized in that, The contact cavity includes an insulating cover and a yoke plate. The insulating cover is connected to one side surface of the yoke plate in the thickness direction. The insulating cover and the yoke plate form the contact cavity. The static contact is installed on the top of the insulating cover. The arc-extinguishing grid assembly is located on the side of the stationary contact member facing the yoke plate.

27. The relay according to claim 24, characterized in that, The arc extinguishing assembly includes at least one pair of arc extinguishing grid assemblies, with the two pairs of arc extinguishing grid assemblies located at opposite ends of the length of the moving contact member; the portion of the stationary member extending beyond the outer surface of the contact cavity is the exposed portion, the shortest distance between the two exposed portions is L1, and the shortest distance between the two pairs of arc extinguishing grid assemblies is L2, where L2≤L1.

28. The relay according to claim 27, characterized in that, The corresponding arc-extinguishing grid assembly and the stationary component have an overlapping portion on a target plane, and the target plane is perpendicular to the contact separation direction of the moving contact and the stationary contact.

29. The relay according to claim 24, characterized in that, The arc extinguishing assembly includes at least one pair of arc extinguishing grid assemblies, with the two arc extinguishing grid assemblies in the pair located at opposite ends of the moving contact in the longitudinal direction; the shortest distance between the two arc extinguishing grid assemblies in the pair is L2; The furthest distance between the insertion portions of the two stationary components is L4, where L4 > L2.

30. The relay according to claim 1, characterized in that, The execution unit includes a temperature monitoring component and / or an auxiliary contact monitoring component.

31. The relay according to any one of claims 1-13, characterized in that, All of the static contacts are located on the same side of the moving contact.

Images