Relay

Abstract

The utility model discloses a relay which comprises a contact cavity, at least one group of contact assemblies and an arc extinguishing assembly. The contact assembly comprises a movable contact piece and two static contact pieces, the static contact pieces are arranged at the top of the contact cavity, and the movable contact piece is movably arranged in the contact cavity and used for making contact with or being separated from the two static contact pieces; the arc extinguishing assembly is arranged in the contact cavity, is located on the side, facing the movable contact piece, of the static contact piece, and is used for conducting arc extinguishing on electric arcs generated in the contact and separation process of the movable contact piece and the static contact piece.

Description

Technical Field

[0001] This application relates to the field of electrical control device technology, and more specifically, 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), and is commonly used in automatic control circuits. Essentially, a relay is an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays a role in automatic adjustment, safety protection, and circuit switching in circuits.

[0003] Electric arcing is easily generated between the moving and stationary contacts of a relay during contact and separation. If the arc is not extinguished in time, it can burn through the moving and stationary contacts, affecting their electrical durability. To solve the problem of arc erosion of the moving and stationary contacts, related technologies use arc-extinguishing components. However, adding arc-extinguishing components to the relay increases its size, which is not conducive to miniaturization design. Utility Model Content

[0004] This application provides a relay to improve the problem of large relay size.

[0005] The relay in this application embodiment includes:

[0006] Contact cavity;

[0007] At least one set of contact components, each contact component including a movable contact and two stationary contacts, the stationary contacts being mounted on the top of the contact cavity, and the movable contact being movably disposed within the contact cavity for contacting or separating from the two stationary contacts; and

[0008] An arc-extinguishing assembly is disposed within the contact cavity and located on the side of the stationary contact member facing the moving contact member, for extinguishing the arc generated by the moving contact member and the stationary contact member during contact and separation.

[0009] According to some embodiments of this application, the arc extinguishing assembly includes an arc extinguishing grid assembly, the arc extinguishing grid assembly and the stationary contact member having an overlapping portion on a target plane, the target plane being perpendicular to the contact separation direction of the moving contact member and the stationary contact member.

[0010] According to some embodiments of this application, the arc extinguishing assembly includes a mounting member and a plurality of grid plates, the plurality of grid plates being mounted on the mounting member and arranged along the contact separation direction between the moving contact member and the stationary contact member, and a gap being present between two adjacent grid plates.

[0011] According to some embodiments of this application, the mounting component includes two oppositely disposed mounting plates, and a plurality of the grid plates are mounted between the two mounting plates.

[0012] According to some embodiments of this application, one of the mounting plate and the grid plate has a locking hole, and the other has a locking part, which engages with the locking hole.

[0013] According to some embodiments of this application, the arc extinguishing assembly includes at least one pair of arc extinguishing grid assemblies, with the two pairs of arc extinguishing grid assemblies respectively located on the side of the two static contacts of the contact assembly facing the moving contact.

[0014] According to some embodiments of this application, the two pairs of arc-extinguishing grid assemblies are located at opposite ends of the moving contact in the length direction.

[0015] According to some embodiments of this application, the static contact includes a static component installed on the top of the contact cavity, the portion of the static component extending into the contact cavity is an insertion portion, the farthest distance between the insertion portions of two static components is L4, and the shortest distance between a pair of arc-extinguishing grid assemblies is L2, where L4 > L2.

[0016] According to some embodiments of this application, the static contact includes a static component and a conductive component, the static component being mounted on the top of the contact cavity; in the contact assembly, the conductive components of the two static contacts are respectively connected to the static components of the two static contacts, and the conductive components are used to contact or separate from the moving contact.

[0017] The arc-extinguishing component is located on the side of the stationary component facing the moving contact.

[0018] According to some embodiments of this application, the arc extinguishing assembly includes at least one pair of arc extinguishing grid assemblies, with the two pairs of arc extinguishing grid assemblies respectively located on the side of the stationary part of the two stationary contacts of the contact assembly facing the moving contact.

[0019] According to some embodiments of this application, the portion of the stationary component extending out of the outer surface of the contact cavity is an exposed portion, the shortest distance between two exposed portions is L1, and the shortest distance between a pair of arc-extinguishing grid assemblies is L2, where L2≤L1.

[0020] According to some embodiments of this application, the conductive element is located between the arc-extinguishing grid assembly and the stationary component.

[0021] According to some embodiments of this application, the stationary component has an insertion portion extending into the contact cavity, and the shortest distance between two insertion portions is L5; the conductive component has a contact portion for contacting or separating from the moving contact, and the shortest distance between two contact portions is L3, where L5 > L3.

[0022] According to some embodiments of this application, the conductive element has a contact portion, and the movable contact element is used to contact or separate from the two contact portions included in the contact assembly;

[0023] Wherein, the portion of the stationary component that extends out of 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 contact portions included in the contact assembly is L3, where L3≤L1.

[0024] According to some embodiments of this application, in the contact assembly, two conductive elements extend along the arrangement direction of the two stationary elements and toward each other, and the two conductive elements have contact portions at positions close to each other, and the moving contact element is used to contact or separate from the contact portions.

[0025] According to some embodiments of this application, the conductive element includes a first segment and a second segment connected vertically, the first segment being connected to the stationary component, and the second segment being used to contact or separate from the moving contact.

[0026] According to some embodiments of this application, the arc extinguishing assembly includes an arc extinguishing grid assembly, wherein the arc extinguishing grid assembly and the stationary component have an overlapping portion on a plane perpendicular to the contact separation direction of the moving contact and the stationary contact.

[0027] According to some embodiments of this application, the two conductive elements extend in a direction that approaches each other.

[0028] According to some embodiments of this application, the static contact includes a first arc-guiding portion arranged at an angle relative to the moving contact, the first arc-guiding portion extending toward the moving contact and configured to guide the arc flow toward the arc-extinguishing assembly.

[0029] According to some embodiments of this application, the static contact includes a static component and a conductive component, the static component being mounted on the top of the contact cavity; in the contact assembly, the conductive components of the two static contacts are respectively connected to the static components of the two static contacts, the conductive component being used to contact or separate from the moving contact; the conductive component has the first arc-guided portion.

[0030] According to some embodiments of this application, the conductive member further includes a connecting portion and a contact portion. The connecting portion is connected to the stationary component. One end of the first arc-shaped portion is connected to the connecting portion, and the other end of the first arc-shaped portion is connected to the contact portion. The moving contact member is used to contact or separate from the contact portion.

[0031] The arc extinguishing assembly includes at least one pair of arc extinguishing grid assemblies, with the two pairs of arc extinguishing grid assemblies respectively located on the side of the connection portion of the two static contacts of the contact assembly facing the moving contact.

[0032] According to some embodiments of this application, the first guide arc portion extends from the connecting portion toward the moving contact member.

[0033] According to some embodiments of this application, the contact cavity includes an insulating cover and a yoke plate, the insulating cover being connected to one side surface of the yoke plate in the thickness direction, and the insulating cover and the yoke plate forming a contact cavity.

[0034] The relay further includes a push rod component, which is movable relative to the yoke plate, and the moving contact is mounted on the push rod component;

[0035] The first guide arc portion extends from the connecting portion toward the center line of the push rod member and the yoke plate.

[0036] According to some embodiments of this application, 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 being configured to guide the arc flow to the arc extinguishing assembly.

[0037] According to some embodiments of this application, the relay further includes an exciter mounted on the contact cavity and configured to release an impactor into the contact cavity in response to an excitation signal, the impactor being capable of switching the moving contact from a state of being connected to the stationary contact to a state of being disconnected from the stationary contact.

[0038] According to some embodiments of this application, the contact cavity includes an insulating cover and a yoke plate, the insulating cover being connected to one side surface of the yoke plate in the thickness direction, and the insulating cover and the yoke plate forming a contact cavity.

[0039] The stationary contact is mounted on the top of the insulating cover, the moving contact is movably disposed in the contact chamber, and the arc extinguishing assembly is disposed in the contact chamber and located on the side of the stationary contact facing the yoke plate.

[0040] According to some embodiments of this application, all of the static contacts are located on the same side of the dynamic contacts.

[0041] An embodiment of the above application has at least the following advantages or beneficial effects:

[0042] In the relay of this application embodiment, the arc extinguishing component is arranged on the side of the stationary contact facing the moving contact, so as to make full use of the space on the side of the stationary contact facing the moving contact, without occupying too much space of the relay along the arrangement direction of the two stationary contacts. This ensures the arc extinguishing effect of the arc extinguishing component and avoids making the relay too large, which is conducive to the miniaturization design of the product.

[0043] Furthermore, in the contact separation direction of the moving contact and the stationary contact, the arc-extinguishing grid assembly overlaps with the stationary contact, and the two paired arc-extinguishing grid assemblies are located at the two ends of the length direction of the moving contact, so that the arc-extinguishing grid assembly is as close as possible to the contact position of the moving contact and the stationary contact. Thus, when an arc is generated between the moving contact and the stationary contact, the arc can enter the arc-extinguishing grid assembly with the shortest path, thus accelerating the arc extinguishing speed.

[0044] Furthermore, the shortest distance between the two exposed parts is L1, and the shortest distance between the two paired arc-extinguishing grid assemblies is L2. Since L2≤L1, the arc-extinguishing grid assembly is closer to the moving contact to accelerate the arc extinguishing speed.

[0045] Furthermore, by setting conductive elements with contact points, since L3≤L1, the two conductive elements extend in a direction that is roughly close to each other. In this way, while ensuring that the distance between the contact points of the two conductive elements remains unchanged, the distance between the two stationary parts can be increased as much as possible. Thus, while ensuring the electrical distance, other components, such as auxiliary monitoring contacts, exciters, etc., can be arranged in the space between the two stationary parts.

[0046] Furthermore, the conductive element includes a first arc-guiding portion arranged at an angle relative to the moving contact. This first arc-guiding portion is configured to guide the arc flow towards the arc-extinguishing assembly. The conductive element not only shortens the distance between the two contact points of the contact assembly but also guides the arc flow towards the arc-extinguishing assembly, thereby increasing the arc-extinguishing speed. In addition, the first arc-guiding portion allows the arc to be transferred from the contact surface of the moving and stationary contacts to the end of the first arc-guiding portion, thereby reducing the contact surface loss of the moving and stationary contacts and minimizing the occurrence of arc spikes, ensuring the electrical clearance and withstand voltage breakdown capability between the moving and stationary contacts.

[0047] Furthermore, by providing a second arc-guiding section, the electric arc generated between the moving and stationary contacts can flow along the extension direction of the second arc-guiding section, 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 section, the arc can be transferred from the contact surface of the moving and stationary contacts to the end of the second arc-guiding section, 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.

[0048] Furthermore, the relay is also equipped with an exciter. When an excitation signal is received, the exciter is activated, releasing an impactor into the contact chamber. This impactor causes the moving contact to switch from a state of conduction with the stationary contact to a state of disconnection. In this way, the exciter acts as a "fuse," promptly disconnecting the relay upon the arrival of the excitation signal. This improves the anti-sticking properties of the moving and stationary contacts, enabling rapid arc extinguishing. Attached Figure Description

[0049] 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.

[0050] Figure 1 This is a three-dimensional schematic diagram of the relay according to the first embodiment of this application.

[0051] Figure 2 It is along Figure 1 A sectional view after being cut along the AA section line.

[0052] Figure 3 This is a three-dimensional schematic diagram of the arc extinguishing component.

[0053] Figure 4 This is a three-dimensional schematic diagram of the arc-extinguishing grid assembly.

[0054] Figure 5 This is a 3D schematic diagram of the mounting plate.

[0055] Figure 6 This is a three-dimensional schematic diagram of the grid.

[0056] Figure 7 This is a cross-sectional view of the relay according to the second embodiment of this application.

[0057] Figure 8 yes Figure 7 A three-dimensional schematic diagram of the assembled conductive and static components.

[0058] Figure 9 This is a cross-sectional view of a relay according to the third embodiment of this application.

[0059] Figure 10 This is a cross-sectional view of the relay according to the fourth embodiment of this application.

[0060] Figure 11 This is a cross-sectional view of the relay according to the fifth embodiment of this application.

[0061] The reference numerals in the attached figures are explained as follows:

[0062] 100. Contact cavity

[0063] 101. Contact Chamber

[0064] 110. Insulating cover

[0065] 111. Ceramic cover

[0066] 112. Frame

[0067] 130. Yoke plate

[0068] 200. Contact components

[0069] 210. Static contact components

[0070] 211. Static parts

[0071] 212. Conductive components

[0072] 2121, First paragraph

[0073] 2122, Second paragraph

[0074] 213. Connecting part

[0075] 214. First guide arc section

[0076] 215. Contact section

[0077] 220. Moving contact components

[0078] 230. Second guide arc section

[0079] 300. Arc extinguishing assembly

[0080] 310. Arc-extinguishing grid assembly

[0081] 311. Installation components

[0082] 3111, Mounting Plate

[0083] 312. Grid

[0084] 313. Card hole

[0085] 314. Connecting part

[0086] 320. Isolation Seat

[0087] 600. Push rod components

[0088] 710. Exciter

[0089] D1, First Direction

[0090] D2, Second Direction

[0091] D3. Third direction Detailed Implementation

[0092] 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.

[0093] 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.

[0094] 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.

[0095] In one embodiment, all of the stationary contact 210 are located on the same side of the moving contact 220.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] 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.

[0102] like Figure 2 As shown, 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.

[0103] 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.

[0104] like Figure 3 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.

[0105] 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.

[0106] 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.

[0107] 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 contact 210 have overlapping portions 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.

[0108] 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 overlaps with the stationary contact 210, and the two pairs of 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. Therefore, 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, thus accelerating the arc extinguishing speed.

[0109] like Figure 2As shown, each stationary contact 210 includes a stationary component 211 and a conductive component 212. The stationary component 211 is mounted on the top of the ceramic cover 111. In the contact assembly 200, the conductive components 212 of the two stationary contacts 210 are respectively connected to the stationary components 211 of the two stationary contacts 210. The conductive components 212 are used to contact or separate from the moving contact 220. The two paired arc-extinguishing grid assemblies 310 are respectively located on the side of the stationary components 211 of the two stationary contacts 210 of the contact assembly 200 facing the yoke plate 130.

[0110] Among them, the corresponding arc-extinguishing grid assembly 310 and the stationary component 211 of the stationary contact 210 have overlapping orthographic projections on the target plane.

[0111] In one embodiment, the two conductive elements 212 extend in a direction that brings them closer to each other.

[0112] 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.

[0113] 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.

[0114] 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.

[0115] 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.

[0116] When the conductive element 212 is connected to the bottom of the stationary element 211, the conductive element 212 can be located between the arc-extinguishing grid assembly 310 and the stationary element 211.

[0117] In one embodiment, the portion of the stationary component 211 that extends into the contact cavity 100 is an insertion portion 211a, the farthest distance between the insertion portions 211a of the two stationary components 211 is L4, and the shortest distance between the two paired arc-extinguishing grid assemblies 310 is L2, where L4 > L2.

[0118] 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.

[0119] The conductive element 212 can be connected to the insertion part 211a.

[0120] like Figure 2 As shown, the portion of the stationary component 211 that extends out of the outer surface of the contact cavity 100 is the exposed portion 211b. The shortest distance between the two exposed portions 211b is L1, and the shortest distance between the two paired arc-extinguishing grid components 310 is L2, where L2 ≤ L1.

[0121] 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.

[0122] Please continue reading. Figure 2 The conductive element 212 has a contact portion 215, and the movable contact 220 is used to contact or separate from the two contact portions 215 included in the contact assembly 200; the shortest distance between the two contact portions 215 included in the contact assembly 200 is L3, where L3≤L1.

[0123] In the embodiments of this application, by providing a conductive element 212, and the conductive element 212 having a contact portion 215, since L3≤L1, the two conductive elements 212 extend in a direction that is approximately close to each other. In this way, while ensuring that the distance between the contact portions 215 of the two conductive elements 212 remains unchanged, the distance between the two stationary components 211 can be increased as much as possible. Thus, while ensuring the electrical distance, other components, such as auxiliary monitoring contacts, exciters, etc., can be arranged in the space between the two stationary components 211.

[0124] like Figure 2 As shown, in one embodiment, the shortest distance between the two insertion portions 211a is L5, where L5 > L3.

[0125] In the embodiments of this application, since L5 > L3, the two conductive elements 212 extend in a direction that is generally close to each other, and sufficient space is reserved between the two insertion portions 211a. This space can accommodate other components, which improves the space utilization rate within the contact cavity 100 and is conducive to realizing the miniaturization design of the product.

[0126] In one implementation, L1 < L5.

[0127] In one embodiment, each conductive element 212 is flat. Two conductive elements 212 of a set of contact components 200 are respectively connected to two stationary parts 211 of the contact component 200 and extend along the arrangement direction (first direction D1) of the two stationary parts 211 and toward each other. The two conductive elements 212 have contact portions 215 at the positions where they are close to each other, and the moving contact 220 is used to contact or separate from the contact portions 215.

[0128] Furthermore, the moving contact 220 is flat and is arranged in parallel with the conductive element 212.

[0129] Of course, in other embodiments, the conductive element 212 can also be other shapes, such as an arc plate, a rod, etc., as long as the two conductive elements 212 start from the two stationary parts 211 and extend in a direction that is close to each other.

[0130] like Figure 3 and Figure 4 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.

[0131] 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.

[0132] In one embodiment, the mounting plate 3111 and the grid plate 312 have a locking hole 313 on one and a locking part 314 on the other, the locking part 314 being engaged into the locking hole 313.

[0133] 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.

[0134] 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.

[0135] like Figure 7 and Figure 8 As shown, the similarities between the relay of the second embodiment and the relay of the first embodiment will not be repeated here. The difference is that the conductive member 212 includes a first arc-guiding portion 214 arranged at an angle relative to the moving contact member 220. The first arc-guiding portion 214 extends toward the moving contact member 220 and is configured to guide the arc flow toward the arc-extinguishing assembly 300.

[0136] In the embodiments of this application, the conductive element 212 can not only shorten the distance between the two contact portions 215 of the contact component 200, but also guide the arc flow to the arc extinguishing component 300 to improve the arc extinguishing speed.

[0137] 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.

[0138] The conductive component 212 also includes a connecting portion 213 and a contact portion 215. The contact portion 215 has a contact portion. The connecting portion 213 is connected to the stationary component 211. One end of the first arc-guiding portion 214 is connected to the connecting portion 213, and the other end of the first arc-guiding portion 214 is connected to the contact portion 215. The moving contact 220 is used to contact or separate from the contact portion 215. The two paired arc-extinguishing grid assemblies 310 are respectively located on the side of the connecting portion 213 of the two stationary contacts 210 of the contact assembly 200 facing the yoke plate 130.

[0139] The first guide arc portion 214 extends from the connecting portion 213 toward the center line of the push rod member 600 and the yoke plate 130.

[0140] It should be noted that, with the help of the first arc guide 214, the electric arc can be transferred from the contact surface of the moving and stationary contacts to the end of the first arc guide 214, thereby reducing the loss of the contact surface of the moving and stationary contacts, reducing the occurrence of tipping phenomenon, and ensuring the electrical clearance and withstand voltage breakdown capability between the moving and stationary contacts.

[0141] 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.

[0142] 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.

[0143] like Figure 9 As shown, the similarities between the relay of the third embodiment and the relay of the first embodiment will not be repeated here, but the differences are as follows:

[0144] 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.

[0145] The contact assembly 200 also includes a second arc guide portion 230, which is connected to the moving contact 220 and is arranged at an angle relative to the moving contact 220. The second arc guide portion 230 is configured to guide the arc flow to the arc extinguishing grid assembly 310.

[0146] 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.

[0147] In one embodiment, the second guide arc portion 230 is integrally connected with the moving contact member 220.

[0148] 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.

[0149] like Figure 9 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 and the arc extinguishing grid assembly 310. One end of the second arc guide portion 230 is connected to the moving contact member 220, and the other end is close to the end of the arc extinguishing grid assembly 310 near the yoke plate 130.

[0150] 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.

[0151] like Figure 9 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.

[0152] 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.

[0153] Please continue reading. Figure 9The relay in this embodiment further includes an exciter 710, which is mounted on top of the ceramic cover 111 of the contact cavity 100. At least a portion of the exciter 710 is located within the contact cavity 101, and the exciter 710 is located on the side of the moving contact 220 facing away from the yoke plate 130. The exciter 710 is configured to release an impactor into the contact cavity 101 in response to an excitation signal. The impactor can switch the moving contact 220 from a state of being connected to the stationary contact 210 to a state of being disconnected from the stationary contact 210.

[0154] In this embodiment, the relay is equipped with an exciter 710. When an excitation signal is generated, the exciter 710 is activated, thereby releasing an impactor into the contact chamber 101. The impactor causes the moving contact 220 to switch from a state of being connected to the stationary contact 210 to a state of being disconnected from the stationary contact 210. In this way, the exciter 710 acts as a "fuse," enabling the relay to disconnect promptly when an excitation signal is generated, which helps to improve the anti-sticking properties of the moving and stationary contacts and achieve rapid arc extinguishing.

[0155] In one embodiment, an excitation signal is generated when a threshold current passes through the moving contact 220.

[0156] 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.

[0157] 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.

[0158] 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.

[0159] For example, the exciter 710 can be an electric detonator or an electric detonating tube, but is not limited thereto.

[0160] 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.

[0161] 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.

[0162] 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.

[0163] like Figure 10 As shown, the similarities between the relay of the fourth embodiment and the relay of the first embodiment will not be repeated here, but the differences are as follows:

[0164] The stationary contact 210 includes a stationary component 211 but not a conductive component 212. The stationary component 211 is mounted on the top of the ceramic cover 111. The moving contact 220 is used to contact or separate from the stationary component 211.

[0165] like Figure 11 As shown, the similarities between the relay of the fifth embodiment and the relay of the fourth embodiment will not be repeated here, but the differences are as follows:

[0166] The contact assembly 200 also includes a second arc guide portion 230, which is connected to the moving contact 220 and is arranged at an angle relative to the moving contact 220. The second arc guide portion 230 is configured to guide the arc flow to the arc extinguishing grid assembly 310.

[0167] In one embodiment, the second guide arc portion 230 is integrally connected with the moving contact member 220.

[0168] 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.

[0169] like Figure 11 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 and the arc extinguishing grid assembly 310. One end of the second arc guide portion 230 is connected to the moving contact member 220, and the other end is close to the end of the arc extinguishing grid assembly 310 near the yoke plate 130.

[0170] 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.

[0171] In summary, the relays of the embodiments of this application have at least the following advantages and beneficial effects:

[0172] 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.

[0173] 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.

[0174] Furthermore, the shortest distance between the two exposed portions 211b 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.

[0175] Furthermore, by providing a conductive element 212 with a contact portion 215, since L3≤L1, the two conductive elements 212 extend in a direction that is approximately close to each other. In this way, while ensuring that the distance between the contact portions 215 of the two conductive elements 212 remains unchanged, the distance between the two stationary components 211 can be increased as much as possible. Thus, while ensuring the electrical distance, other components, such as auxiliary monitoring contacts, exciters, etc., can be arranged in the space between the two stationary components 211.

[0176] Furthermore, the conductive element 212 includes a first arc-guiding portion 214 arranged at an angle relative to the moving contact 220. The first arc-guiding portion 214 is configured to guide the arc flow to the arc-extinguishing assembly 300. The conductive element 212 can not only shorten the distance between the two contact portions 215 of the contact assembly 200, but also guide the arc flow to the arc-extinguishing assembly 300 to improve the arc-extinguishing speed. 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.

[0177] 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.

[0178] Furthermore, the relay is also 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 causes the moving contact 220 to switch from a state of conduction with the stationary contact 210 to a state of disconnection with the stationary contact 210. In this way, the exciter 710 acts as a "fuse," enabling the relay to disconnect promptly when an excitation signal is received, which helps improve the anti-sticking properties of the moving and stationary contacts and achieves rapid arc extinguishing.

[0179] 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.

[0180] 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.

[0181] 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.

[0182] 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.

[0183] 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: Contact cavity; At least one set of contact components, the contact components including a movable contact and two stationary contact components, the stationary contact components being mounted on the top of the contact cavity, and the movable contact components being movably disposed within the contact cavity for contacting or separating from the two stationary contact components; as well as An arc-extinguishing assembly is disposed within the contact cavity and located on the side of the stationary contact member facing the moving contact member, for extinguishing the arc generated by the moving contact member and the stationary contact member during contact and separation.

2. The relay according to claim 1, characterized in that, The arc extinguishing assembly includes an arc extinguishing grid assembly, which overlaps with the orthographic projection of the stationary contact on a target plane. The target plane is perpendicular to the contact separation direction of the moving contact and the stationary contact.

3. The relay according to claim 1, characterized in that, The arc extinguishing assembly includes a mounting component and multiple grid plates. The multiple grid plates are mounted on the mounting component and arranged along the contact separation direction between the moving contact and the stationary contact. There is a gap between two adjacent grid plates.

4. The relay according to claim 3, characterized in that, The mounting component includes two oppositely arranged mounting plates, with a plurality of the grid plates mounted between the two mounting plates.

5. The relay according to claim 4, characterized in that, The mounting plate and the grid plate each have a locking hole on one side and a locking part on the other side, the locking part locking into the locking hole.

6. The relay according to any one of claims 1-5, characterized in that, The arc extinguishing assembly includes at least one pair of arc extinguishing grid assemblies, with the two arc extinguishing grid assemblies respectively located on the side of the two static contacts of the contact assembly facing the moving contact.

7. The relay according to claim 6, characterized in that, The two arc-extinguishing grid assemblies in pairs are located at opposite ends of the moving contact along its length.

8. The relay according to claim 6, characterized in that, The static contact includes a static component installed on the top of the contact cavity. The portion of the static component extending into the contact cavity is an insertion portion. The farthest distance between the insertion portions of two static components is L4, and the shortest distance between a pair of arc-extinguishing grid assemblies is L2, where L4 > L2.

9. The relay according to any one of claims 1-5, characterized in that, The static contact includes a static component and a conductive component. The static component is installed on the top of the contact cavity. In the contact assembly, the conductive components of the two static contacts are respectively connected to the static components of the two static contacts. The conductive components are used to contact or separate from the moving contact. The arc-extinguishing component is located on the side of the stationary component facing the moving contact.

10. The relay according to claim 9, 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 respectively located on the side of the stationary part of the two stationary contacts of the contact assembly facing the moving contact.

11. The relay according to claim 10, characterized in that, The portion of the stationary component that extends beyond the outer surface of the contact cavity is the exposed portion. The shortest distance between two exposed portions is L1, and the shortest distance between two paired arc-extinguishing grid assemblies is L2, where L2 ≤ L1.

12. The relay according to claim 10, characterized in that, The conductive element is located between the arc-extinguishing grid assembly and the stationary component.

13. The relay according to claim 9, characterized in that, The stationary component has an insertion portion that extends into the contact cavity, and the shortest distance between the two insertion portions is L5; The conductive element has a contact portion for contacting or separating from the moving contact, and the shortest distance between two contact portions is L3, where L5 > L3.

14. The relay according to claim 9, characterized in that, The conductive element has a contact portion, and the movable contact element is used to contact or separate from the two contact portions included in the contact assembly; Wherein, the portion of the stationary component that extends out of 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 contact portions included in the contact assembly is L3, where L3≤L1.

15. The relay according to claim 9, characterized in that, In the contact assembly, two conductive elements extend along the arrangement direction of the two stationary elements and toward each other, and the two conductive elements have contact portions at positions close to each other, and the moving contact element is used to contact or separate from the contact portions.

16. The relay according to claim 15, characterized in that, The conductive element includes a first segment and a second segment connected vertically. The first segment is connected to the stationary component, and the second segment is used to contact or separate from the moving contact.

17. The relay according to claim 9, characterized in that, The arc extinguishing assembly includes an arc extinguishing grid assembly, and the arc extinguishing grid assembly and the stationary component have an overlapping portion on a plane perpendicular to the contact separation direction of the moving contact and the stationary contact.

18. The relay according to claim 9, characterized in that, The two conductive elements extend in a direction that brings them closer to each other.

19. The relay according to any one of claims 1-5, characterized in that, The static contact includes a first arc-guiding portion that is inclined relative to the moving contact, the first arc-guiding portion extending toward the moving contact and configured to guide the arc flow toward the arc-extinguishing assembly.

20. The relay according to claim 19, characterized in that, The static contact includes a static component and a conductive component. The static component is mounted on the top of the contact cavity. In the contact assembly, the conductive components of the two static contacts are respectively connected to the static components of the two static contacts. The conductive component is used to contact or separate from the moving contact. The conductive component has the first arc-guided portion.

21. The relay according to claim 20, characterized in that, The conductive component further includes a connecting portion and a contact portion. The connecting portion is connected to the stationary component. One end of the first arc-shaped portion is connected to the connecting portion, and the other end of the first arc-shaped portion is connected to the contact portion. The moving contact component is used to contact or separate from the contact portion. The arc extinguishing assembly includes at least one pair of arc extinguishing grid assemblies, with the two pairs of arc extinguishing grid assemblies respectively located on the side of the connection portion of the two static contacts of the contact assembly facing the moving contact.

22. The relay according to claim 21, characterized in that, The first guide arc portion extends from the connecting portion toward the moving contact member.

23. The relay according to claim 21, 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, and the insulating cover and the yoke plate form a contact cavity. The relay further includes a push rod component, which 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 member and the yoke plate.

24. The relay according to any one of claims 1-5, 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 being configured to guide the arc flow to the arc extinguishing assembly.

25. The relay according to any one of claims 1-5, characterized in that, The relay further includes an exciter mounted on 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 stationary contact to a state of being disconnected from the stationary contact.

26. The relay according to any one of claims 1-5, 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, and the insulating cover and the yoke plate form a contact cavity. The stationary contact is mounted on the top of the insulating cover, the moving contact is movably disposed in the contact chamber, and the arc extinguishing assembly is disposed in the contact chamber and located on the side of the stationary contact facing the yoke plate.

27. The relay according to any one of claims 1-5, characterized in that, All of the static contacts are located on the same side of the moving contact.

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