Relay

Abstract

The utility model relates to a relay. A movable contact assembly is provided with a first movable contact and a second movable contact at an interval; the static contact assembly and the movable contact assembly are arranged at intervals in the second direction of the movable contact assembly, the static contact assembly is provided with a first static contact and a second static contact, the first static contact is opposite to the first movable contact in position, the second static contact is opposite to the second movable contact in position, and the first static contact and the first movable contact are arranged to be a first contact unit. The second static contact and the second movable contact are second contact units; the first arc extinguishing assembly comprises at least two first arc extinguishing grids, all the first arc extinguishing grids are located on the side, away from the second contact unit, of the first contact unit, all the first arc extinguishing grids are arranged at intervals in the second direction, and a first arc extinguishing gap is formed between every two adjacent first arc extinguishing grids; the installation shell is provided with at least one first heat dissipation hole, the movable contact assembly, the static contact assembly and the first arc extinguishing gate are all arranged in the installation shell, and each first heat dissipation hole is communicated with at least one first arc extinguishing gap.

Description

Technical Field

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

[0002] A relay is an electronic control device that has a control system (also known as an input circuit) and a controlled system (also known as an output circuit). Essentially, a relay is an "automatic switch" that uses a smaller current to control a larger current. In circuits, it plays roles such as automatic adjustment, safety protection, and circuit switching.

[0003] When the moving and stationary contacts of a relay are separated, the electric field strength is very high due to the small distance between them. Under the action of the strong electric field, electrons are forcibly pulled out from the cathode surface and move towards the anode. When the electrons between the moving and stationary contacts reach a certain degree of ionization, the dielectric will be broken down, resulting in an electric arc. The high temperature of the electric arc will cause erosion inside the relay, affecting its service life. Utility Model Content

[0004] Therefore, it is necessary to provide a relay that addresses the problem of high-temperature electric arcs causing internal erosion and affecting the lifespan of relays in traditional technologies.

[0005] The technical solution is as follows:

[0006] One embodiment provides a relay, including:

[0007] A movable contact component, wherein the movable contact component is provided with a first movable contact and a second movable contact spaced apart along its own first direction;

[0008] A stationary contact component is provided, wherein the stationary contact component and the moving contact component are spaced apart along a second direction of the moving contact component, the second direction forming an angle with the first direction. The stationary contact component is provided with a first stationary contact point and a second stationary contact point. The first stationary contact point and the first moving contact point are positioned opposite each other, and the second stationary contact point and the second moving contact point are positioned opposite each other. The first stationary contact point and the first moving contact point are configured as a first contact unit, and the second stationary contact point and the second moving contact point are configured as a second contact unit.

[0009] A first arc-extinguishing assembly, comprising at least two first arc-extinguishing grids, all of which are located on the side of the first contact unit away from the second contact unit, and are spaced apart along the second direction, with a first arc-extinguishing gap formed between adjacent first arc-extinguishing grids; and

[0010] The mounting housing has at least one first heat dissipation hole. The moving contact component, the stationary contact component, and the first arc extinguishing grid are all disposed inside the mounting housing. Each of the first heat dissipation holes is connected to at least one first arc extinguishing gap.

[0011] In the aforementioned relay, when the moving contact assembly disconnects from the stationary contact assembly, the first moving contact and the first stationary contact separate, as do the second moving contact and the second stationary contact. This causes electric arcs to be generated between the first moving contact and the first stationary contact, and between the second moving contact and the second stationary contact. Since the current directions of the electric arcs generated by the first contact unit and the second contact unit are opposite, the magnetic fields they form exert a Lorentz force on each other, causing the electric arc generated by the first contact unit to move away from the second contact unit and eventually reach the first arc-extinguishing assembly. The first arc-extinguishing grid can divide the electric arc into multiple segments, thereby increasing the overall length of the arc and reducing its energy. At the same time, the first heat dissipation hole, which is connected to the first arc-extinguishing gap, can dissipate the heat generated by the arc, preventing the arc from continuing to burn and eventually extinguishing it. Compared with traditional technology, the aforementioned relay, through the combined action of the first arc-extinguishing grid and the first heat dissipation hole, prevents the arc from continuing to burn, thereby extinguishing the arc, preventing the high-temperature arc from burning other components inside the relay, and improving the service life of the relay.

[0012] In one embodiment, the relay further includes a second arc-extinguishing component, which includes at least two second arc-extinguishing grids. All the second arc-extinguishing grids are located on the side of the second contact unit away from the first contact unit. All the second arc-extinguishing grids are spaced apart along the second direction. A second arc-extinguishing gap is formed between two adjacent second arc-extinguishing grids. The mounting housing is provided with at least one second heat dissipation hole, and each second heat dissipation hole communicates with at least one second arc-extinguishing gap.

[0013] In one embodiment, the first heat dissipation hole has a first opening and a second opening that are connected, the first opening and the second opening being at least partially offset along the direction toward the first arc-extinguishing component; or / and,

[0014] The second heat dissipation hole has a third opening and a fourth opening that are connected to each other, and the third opening and the fourth opening are at least partially offset in the direction toward the second arc extinguishing component.

[0015] In one embodiment, the first heat dissipation hole has a first opening and a second opening that are connected, and the path of the first heat dissipation hole is bent along the direction from the first opening toward the second opening; or / and,

[0016] The second heat dissipation hole has a third opening and a fourth opening that are connected, and the path of the second heat dissipation hole is bent along the direction of the third opening toward the fourth opening.

[0017] In one embodiment, the first heat dissipation hole has a first hole segment and a second hole segment that are connected to each other, and the center lines of the first hole segment and the second hole segment are offset from each other in the direction toward the first arc-extinguishing component; or / and,

[0018] The second heat dissipation hole has a third hole segment and a fourth hole segment that are connected to each other. The center line of the third hole segment and the center line of the fourth hole segment are staggered in the direction toward the second arc extinguishing component.

[0019] In one embodiment, the first heat dissipation hole has a first aperture, a second aperture, and a third aperture that are interconnected. The first aperture communicates with the interior of the mounting housing, and the second aperture and the third aperture both communicate with the exterior of the mounting housing; or / and,

[0020] The second heat dissipation hole has a fourth, a fifth, and a sixth hole that are connected to each other. The fourth hole is connected to the inside of the mounting shell, and the fifth and sixth holes are both connected to the outside of the mounting shell.

[0021] In one embodiment, the moving contact component includes a moving contact bridge, wherein the first moving contact and the second moving contact are spaced apart on the moving contact bridge along the first direction, and the moving contact bridge is capable of reciprocating along the second direction and moving closer to or further away from the stationary contact component, so that the first moving contact contacts or disconnects from the first stationary contact, and the second moving contact connects or disconnects from the second stationary contact.

[0022] Specifically, when the first moving contact is disconnected from the first stationary contact, the projection of the first arc-extinguishing component toward the first contact unit covers the gap between the first moving contact and the first stationary contact; when the second moving contact is disconnected from the second stationary contact, the projection of the second arc-extinguishing component toward the second contact unit covers the gap between the second moving contact and the second stationary contact.

[0023] In one embodiment, the first heat dissipation hole and the first arc-extinguishing gap are connected in a one-to-one correspondence; or...

[0024] The first heat dissipation hole is provided with at least two, and each of the first arc extinguishing gaps communicates with at least two of the first heat dissipation holes; or,

[0025] The second heat dissipation hole and the second arc extinguishing gap are connected in a one-to-one correspondence; or,

[0026] The second heat dissipation hole is provided with at least two, and each of the second arc extinguishing gaps is connected to at least two of the second heat dissipation holes.

[0027] In one embodiment, the relay further includes a first mounting mechanism and a second mounting mechanism, both of which are disposed within the mounting housing. The first arc-extinguishing gate is disposed in the first mounting mechanism, and the second arc-extinguishing gate is disposed in the second mounting mechanism.

[0028] In one embodiment, the mounting housing includes a base and a cover, the base and the cover being assembled together, the first mounting mechanism including a first mounting member and a second mounting member, the first mounting member being disposed on the base, the second mounting member being disposed on the cover, one end of the first arc-extinguishing grid being disposed on the first mounting member, and the other end of the first arc-extinguishing grid being disposed on the second mounting member.

[0029] In one embodiment, the first mounting member is provided with a first mounting groove, the second mounting member is provided with a second mounting groove, one end of the first arc-extinguishing grid is inserted into the first mounting groove, the other end of the first arc-extinguishing grid is inserted into the second mounting groove, at least two first heat dissipation holes are provided, at least one first heat dissipation hole is provided on the bottom wall of the first mounting groove, and at least one first heat dissipation hole is provided on the bottom wall of the second mounting groove.

[0030] In one embodiment, the first mounting mechanism further includes at least one first partition portion disposed in the first mounting groove, and the first mounting mechanism further includes at least one second partition portion disposed in the second mounting groove, wherein the first partition portion and the second partition portion are both located in the first arc extinguishing gap.

[0031] In one embodiment, the mounting housing includes a base and a cover, the base and the cover being assembled together, the second mounting mechanism including a third mounting member and a fourth mounting member, the third mounting member being disposed on the base, the fourth mounting member being disposed on the cover, one end of the second arc-extinguishing grid being disposed on the third mounting member, and the other end of the second arc-extinguishing grid being disposed on the fourth mounting member.

[0032] In one embodiment, the third mounting member is provided with a third mounting groove, the fourth mounting member is provided with a fourth mounting groove, one end of the second arc-extinguishing grid is inserted into the third mounting groove, the other end of the second arc-extinguishing grid is inserted into the fourth mounting groove, and at least two second heat dissipation holes are provided, at least one second heat dissipation hole is opened on the bottom wall of the third mounting groove, and at least one second heat dissipation hole is opened on the bottom wall of the fourth mounting groove.

[0033] In one embodiment, the second mounting mechanism further includes at least one third partition provided in the third mounting groove, and the second mounting mechanism further includes at least one fourth partition provided in the fourth mounting groove, wherein the third partition and the fourth partition are both located in the second arc extinguishing gap. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a top view of the interior of a relay in one embodiment of this application.

[0036] Figure 2 This is a schematic diagram of the internal structure of a relay in one embodiment of this application.

[0037] Figure 3 This is a top view of a relay in one embodiment of this application.

[0038] Figure 4 for Figure 3 A schematic diagram of the structure of section AA in the middle.

[0039] Figure 5 for Figure 3 A schematic diagram of the structure of the BB cross section.

[0040] Figure 6 This is a top view of the base in one embodiment of this application.

[0041] Figure 7 for Figure 6 A schematic diagram of the CC section.

[0042] Figure 8 for Figure 6 A schematic diagram of the structure of the DD cross section.

[0043] Figure 9 This is a schematic diagram of the structure of the cover in one embodiment of this application.

[0044] Figure 10 for Figure 9 A schematic diagram of the EE cross-section.

[0045] Figure 11 for Figure 9 A schematic diagram of the structure of the FF cross section.

[0046] Figure 12This is a schematic diagram of the structure of the first and second arc-extinguishing grids installed on the base in one embodiment of this application.

[0047] Figure 13 for Figure 12 A magnified view of a section at point G.

[0048] Figure 14 This is a schematic diagram of the structure of the first and second arc-extinguishing grids installed on the base at another angle in one embodiment of this application.

[0049] Figure 15 for Figure 14 A magnified view of a section at point H.

[0050] Figure 16 This is a schematic diagram of the structure in which the first arc-extinguishing grid and the second arc-extinguishing grid are installed on the cover in one embodiment of this application.

[0051] Figure 17 for Figure 16 A magnified view of a section at point I.

[0052] Figure 18 This is a schematic diagram of the structure of the first and second arc-extinguishing grids installed at another angle of the cover in one embodiment of this application.

[0053] Figure 19 for Figure 18 A schematic diagram of the structure at point J.

[0054] Figure 20 This is a schematic diagram of the structure of the first heat dissipation hole in one embodiment of this application.

[0055] Figure 21 This is a schematic diagram of the structure of the first heat dissipation hole in another embodiment of this application.

[0056] Figure 22 This is a schematic diagram of the structure of the first heat dissipation hole in another embodiment of this application.

[0057] Attached image annotations:

[0058] 100. Moving contact assembly; 110. First moving contact; 120. Second moving contact; 130. Moving contact bridge; 200. Stationary contact assembly; 210. First stationary contact; 220. Second stationary contact; 230. Stationary contact element; 300. First contact unit; 400. Second contact unit; 500. Mounting housing; 510. First heat dissipation hole; 511. First opening; 512. Second opening; 513. First gap; 514. Second gap; 515. Third gap; 516. First hole segment; 517. Second hole segment; 520. Second heat dissipation hole; 530. Base; 53 1. Receiving groove; 540. Cover; 610. First arc extinguishing assembly; 611. First arc extinguishing grid; 612. First arc extinguishing gap; 620. Second arc extinguishing assembly; 621. Second arc extinguishing grid; 622. Second arc extinguishing gap; 710. First mounting component; 711. First mounting groove; 712. First partition; 720. Second mounting component; 721. Second mounting groove; 722. Second partition; 810. Third mounting component; 811. Third mounting groove; 812. Third partition; 820. Fourth mounting component; 821. Fourth mounting groove; 822. Fourth partition. Detailed Implementation

[0059] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0060] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0061] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0062] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0063] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0064] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0065] Please see Figures 1 to 5One embodiment of this application provides a relay, including a moving contact assembly 100, a stationary contact assembly 200, a first arc-extinguishing assembly 610, and a mounting housing 500. The moving contact assembly 100 is provided with a first moving contact 110 and a second moving contact 120 spaced apart along a first direction. The stationary contact assembly 200 is spaced apart from the moving contact assembly 100 along a second direction, which forms an angle with the first direction. The stationary contact assembly 200 is provided with a first stationary contact 210 and a second stationary contact 220. The first stationary contact 210 is opposite to the first moving contact 110, and the second stationary contact 220 is opposite to the second moving contact 120. The first stationary contact 210 and the first moving contact 110 form a first contact unit 30. 0. The second stationary contact 220 and the second moving contact 120 form the second contact unit 400; the first arc extinguishing assembly 610 includes at least two first arc extinguishing grids 611, all of which are located on the side of the first contact unit 300 away from the second contact unit 400, and all of which are spaced apart along the second direction, forming a first arc extinguishing gap 612 between two adjacent first arc extinguishing grids 611; the mounting housing 500 is provided with at least one first heat dissipation hole 510, and the moving contact assembly 100, the stationary contact assembly 200 and the first arc extinguishing grids 611 are all located inside the mounting housing 500, and each first heat dissipation hole 510 communicates with at least one first arc extinguishing gap 612.

[0066] In the aforementioned relay, when the moving contact assembly 100 is disconnected from the stationary contact assembly 200, the first moving contact 110 and the first stationary contact 210 separate from each other, and the second moving contact 120 and the second stationary contact 220 separate from each other. This causes electric arcs to be generated between the first moving contact 110 and the first stationary contact 210, and between the second moving contact 120 and the second stationary contact 220, respectively. Since the current direction of the electric arc generated by the first contact unit 300 is opposite to that of the electric arc generated by the second contact unit 400, the magnetic fields formed by them will generate a Lorentz force that moves them away from each other, causing the electric arc generated by the first contact unit 300 to move away from the second contact unit. The relay moves in the direction of 400 and eventually reaches the first arc-extinguishing component 610. The first arc-extinguishing grid 611 can divide the arc into multiple arc segments, thereby increasing the overall length of the arc and reducing the energy of the arc. At the same time, the first heat dissipation hole 510, which is connected to the first arc-extinguishing gap 612, can dissipate the heat generated by the arc, so that the arc cannot continue to burn and eventually extinguishes. Compared with the traditional technology, the relay described above prevents the arc from continuing to burn under the combined action of the first arc-extinguishing grid 611 and the first heat dissipation hole 510, thereby extinguishing the arc, preventing the high-temperature arc from burning other components inside the relay, and improving the service life of the relay.

[0067] As an explanation, taking the first contact unit 300 as an example, when the first moving contact 110 and the first stationary contact 210 are separated, due to the small distance between them, the electric field strength is very high. Under the influence of this strong electric field, electrons are forcibly pulled out from the cathode surface and move towards the anode. When the electrons between the first moving contact 110 and the first stationary contact 210 reach a certain degree of ionization, the medium between them is broken down, resulting in an electric arc. The heat from the arc accumulates inside the relay, causing ablation of the relay's plastic casing or other components. The second contact unit 400 is similar to the first contact unit 300 and will not be described further here.

[0068] Furthermore, the arc generated when the first contact unit 300 is disconnected will be subjected to the Lorentz force from the arc generated when the second contact unit 400 is disconnected, and thus move away from the second contact unit 400 to the first arc extinguishing component 610, so as to extinguish the arc through the first arc extinguishing component 610.

[0069] Furthermore, the first arc-extinguishing grid 611 is magnetized by the electromagnetic field. The magnetized first arc-extinguishing grid 611 will have an attractive force on the electric arc. The magnetic flux of the magnetic field generated by the electric arc will move to the side where the first arc-extinguishing grid 611 is located. The contraction force of the magnetic field will lengthen the electric arc and eventually pull the electric arc into the first arc-extinguishing gap 612. Thus, the electric arc generated by the first contact unit 300 is divided into multiple series-connected electric arcs through the first arc-extinguishing grid 611. As the number of electric arcs increases, the total length of the electric arc is longer than the original length of the electric arc. By increasing the total length of the electric arc, the energy of the electric arc is reduced, so that the electric arc can no longer burn and eventually extinguishes itself.

[0070] Please see Figures 1 to 2 In one embodiment, the movable contact assembly 100 includes a movable contact bridge 130, with the first direction being the length direction of the movable contact bridge 130 (i.e., Figure 1 In the K direction), the first moving contact 110 and the second moving contact 120 are disposed at opposite ends of the moving contact bridge 130 along the length direction of the moving contact bridge 130, and the second direction is the thickness direction of the moving contact bridge 130 (i.e., the K direction). Figure 1 The L direction in the equation is perpendicular to the first direction, and will not be elaborated further here.

[0071] Please see Figures 1 to 2 In one embodiment, the static contact assembly 200 includes two static contacts 230, each having two opposing surfaces along a second direction, with the static contact point disposed on a surface close to the moving contact assembly 100.

[0072] In one embodiment, the mounting housing 500 has a mounting cavity inside, in which the moving contact assembly 100, the stationary contact assembly 200, and the first arc extinguishing assembly 610 are all disposed to protect these components.

[0073] In one embodiment, the first arc-extinguishing grid 611 is provided with at least three and spaced apart along the second direction to form at least two first arc-extinguishing gaps 612. Each first heat dissipation hole 510 can communicate with one of the first arc-extinguishing gaps 612 or with at least two first arc-extinguishing gaps 612, as long as it can dissipate heat from the first arc-extinguishing gaps 612. This will not be elaborated further here.

[0074] Please see Figures 1 to 5 In one embodiment, the relay further includes a second arc-extinguishing component 620, which includes at least two second arc-extinguishing gates 621. All the second arc-extinguishing gates 621 are located on the side of the second contact unit 400 away from the first contact unit 300. All the second arc-extinguishing gates 621 are spaced apart along a second direction. A second arc-extinguishing gap 622 is formed between two adjacent second arc-extinguishing gates 621. The mounting housing 500 is provided with at least one second heat dissipation hole 520. Each second heat dissipation hole 520 communicates with at least one second arc-extinguishing gap 622.

[0075] Similar to the first arc-extinguishing component 610, the current direction of the arc generated by the first contact unit 300 is opposite to that of the arc generated by the second contact unit 400. The magnetic fields formed by the two will generate a Lorentz force that moves them away from each other, causing the arc generated by the second contact unit 400 to move away from the first contact unit 300 and eventually to the second arc-extinguishing component 620. The second arc-extinguishing grid 621 can divide the arc into multiple arc segments to increase the overall length of the arc and reduce the energy of the arc. At the same time, the second heat dissipation hole 520, which is connected to the second arc-extinguishing gap 622, can dissipate the heat generated by the arc, so that the arc cannot continue to burn and eventually extinguishes.

[0076] In one embodiment, the second arc-extinguishing grid 621 is provided with at least three and spaced apart along the second direction to form at least two second arc-extinguishing gaps 622. Each second heat dissipation hole 520 can communicate with one of the second arc-extinguishing gaps 622 or with at least two second arc-extinguishing gaps 622, as long as it can dissipate heat from the second arc-extinguishing gaps 622. This will not be elaborated further here.

[0077] Optionally, the first heat dissipation hole 510 can be a circular hole, a strip hole, a polygonal hole, or the same shape as the second heat dissipation hole 520. No specific limitation is made here.

[0078] Furthermore, when the first heat dissipation hole 510 needs to communicate with at least two first arc extinguishing gaps 612 simultaneously, the first heat dissipation hole 510 can be configured as a strip-shaped hole extending along the second direction, so as to facilitate communication between the first heat dissipation hole 510 and at least two first arc extinguishing gaps 612; the second heat dissipation hole 520 is similar to the first heat dissipation hole 510, and will not be described in detail here.

[0079] Furthermore, with Figure 1 Taking the perspective of [the device] as an example, the first contact unit 300 and the second contact unit 400 are spaced apart along the first direction. The first contact unit 300 is located to the left of the second contact unit 400, and correspondingly, the second contact unit 400 is located to the right of the first contact unit 300. When both the first contact unit 300 and the second contact unit 400 generate an electric arc, the electric arc on the left will generate a rightward Lorentz force on the electric arc on the right, causing the electric arc on the right to move to the right to the second arc-extinguishing component 620. Correspondingly, the electric arc on the right will generate a leftward Lorentz force on the electric arc on the left, causing the electric arc on the left to move to the left to the first arc-extinguishing component 610, thereby achieving arc extinguishing.

[0080] At the same time, since the temperature inside the shell is higher than that outside the shell, the air pressure inside the shell is higher than that outside the shell. The pressure difference between the inside and outside of the shell causes the airflow inside the shell to tend to flow out of the shell through the first heat dissipation hole 510 and / or the second heat dissipation hole 520. Through the flow of airflow, the arc can be better guided to the first arc extinguishing component 610 or / and the second arc extinguishing component 620, further improving the arc extinguishing effect.

[0081] In one embodiment, both the first arc-extinguishing gate 611 and the second arc-extinguishing gate 621 are made of magnetically conductive material.

[0082] Furthermore, the first arc-extinguishing grid 611 and the second arc-extinguishing grid 621 can be made of materials such as iron sheets, steel sheets, copper-plated sheets or other materials with magnetic permeability, and the arc-extinguishing grids are insulated from each other and do not form a continuous conductive channel.

[0083] In one embodiment, a third heat dissipation hole may also be provided in other parts of the mounting housing 500 to further improve the overall heat dissipation effect of the relay.

[0084] Please see Figure 20 In one embodiment, the first heat dissipation hole 510 has a first opening 511 and a second opening 512 that are connected to each other, and the first opening 511 and the second opening 512 are at least partially offset in the direction toward the first arc extinguishing component 610.

[0085] This design increases the difficulty for foreign objects to enter the mounting housing 500 through the first heat dissipation hole 510, preventing foreign objects or dust from entering the mounting housing 500 through the first heat dissipation hole 510 during the production, installation, and transportation of the relay, thereby affecting the contact between contacts and the operation of other components.

[0086] As an embodiment that can be implemented simultaneously with the above embodiments, the second heat dissipation hole 520 has a third opening and a fourth opening that are connected, and the third opening and the fourth opening are at least partially offset in the direction toward the second arc extinguishing component 620. Similar to the first heat dissipation hole 510, it will not be described again here.

[0087] Please see Figure 21 In one embodiment, the first heat dissipation hole 510 has a first opening 511 and a second opening 512 that are connected to each other, and the path of the first heat dissipation hole 510 is bent along the direction from the first opening 511 toward the second opening 512.

[0088] The path of the first heat dissipation hole 510 is bent along the direction from the first opening 511 toward the second opening 512, which increases the difficulty for foreign objects to enter the mounting housing 500 through the first heat dissipation hole 510. This prevents foreign objects or dust from entering the mounting housing 500 through the first heat dissipation hole 510 during the production, installation, and transportation of the relay, thereby affecting the contact between contacts and the operation of other components.

[0089] As an embodiment that can be implemented simultaneously with the above embodiments, the second heat dissipation hole 520 has a third opening and a fourth opening that are connected, and the path of the second heat dissipation hole 520 is bent along the direction from the third opening to the fourth opening. Similar to the first heat dissipation hole 510, it will not be described again here.

[0090] Please see Figure 21 In one embodiment, the first heat dissipation hole 510 has a first hole segment 516 and a second hole segment 517 that are connected to each other, and the center line of the hole of the first hole segment 516 and the center line of the hole of the second hole segment 517 form an angle.

[0091] The center lines of the first hole segment 516 and the second hole segment 517 are staggered along the first direction. This increases the difficulty for foreign objects to enter the mounting housing 500 through the first heat dissipation hole 510, preventing foreign objects or dust from entering the mounting housing 500 through the first heat dissipation hole 510 during the production, installation, and transportation of the relay, thereby affecting the contact between contacts and the operation of other components.

[0092] As an embodiment that can be implemented simultaneously with the above embodiments, the second heat dissipation hole 520 has a third hole segment and a fourth hole segment that are connected, and the center line of the third hole segment and the center line of the fourth hole segment form an angle. Similar to the first heat dissipation hole 510, it will not be described again here.

[0093] Please see Figure 22 In one embodiment, the first heat dissipation hole 510 has a first aperture 513, a second aperture 514 and a third aperture 515 that are connected to each other. The first aperture 513 is connected to the inside of the mounting housing, and the second aperture 514 and the third aperture 515 are both connected to the outside of the mounting housing 500.

[0094] This design not only prevents foreign objects from entering the mounting housing 500 through the first heat dissipation hole 510, but also improves the heat dissipation efficiency of the first heat dissipation hole 510.

[0095] As an embodiment that can be implemented simultaneously with the above embodiments, the second heat dissipation hole 520 has a fourth, a fifth, and a sixth interconnected aperture. The fourth aperture communicates with the inside of the mounting housing, and the fifth and sixth apertures both communicate with the outside of the fourth aperture and the mounting housing 500. Similar to the first heat dissipation hole 510, it will not be described again here.

[0096] As an explanation, the above embodiments regarding the first heat dissipation hole 510 and / or the second heat dissipation hole 520 all prevent foreign objects or dust from entering the mounting housing 500 by setting the heat dissipation hole with a special structure. Based on this, those skilled in the art can modify or improve the first heat dissipation hole 510 and / or the second heat dissipation hole 520 in conjunction with the above embodiments, so that the heat dissipation hole has different shapes, which will not be elaborated here.

[0097] Please see Figure 1 In one embodiment, the moving contact assembly 100 includes a moving contact bridge 130, a first moving contact 110 and a second moving contact 120 are spaced apart on the moving contact bridge 130 along a first direction, and the moving contact bridge 130 is capable of reciprocating along a second direction and moving closer to or further away from the stationary contact assembly 200, so that the first moving contact 110 contacts or disconnects from the first stationary contact 210, and the second moving contact 120 connects or disconnects from the second stationary contact 220;

[0098] Specifically, when the first moving contact 110 is disconnected from the first stationary contact 210, the projection of the first arc-extinguishing component 610 toward the first contact unit 300 covers the gap between the first moving contact 110 and the first stationary contact 210; when the second moving contact 120 is disconnected from the second stationary contact 220, the projection of the second arc-extinguishing component 620 toward the second contact unit 400 covers the gap between the second moving contact 120 and the second stationary contact 220.

[0099] With this configuration, when the first moving contact 110 is disconnected from the first stationary contact 210, it can be ensured that the arc generated by the first contact unit 300 can completely fall within the range of the first arc extinguishing component 610 as it moves toward the first arc extinguishing component 610. Similarly, when the second moving contact 120 is disconnected from the second stationary contact 220, it can be ensured that the arc generated by the second contact unit 400 can completely fall within the range of the second arc extinguishing component 620 as it moves toward the second arc extinguishing component 620, thus ensuring the arc extinguishing effect of the first arc extinguishing component 610 and the second arc extinguishing component 620 and preventing the arc from burning other components in the relay.

[0100] In one embodiment, the relay further includes a coil assembly and a magnetic rotating element. The magnetic rotating element is disposed between the moving contact bridge 130 and the moving contact assembly 100. Under the magnetic force of the coil assembly, the magnetic rotating element can reciprocate within a preset swing range around its own rotation axis, thereby driving the moving contact bridge 130 closer to or further away from the stationary contact assembly 200. The preset swing range refers to the range between the position of the magnetic rotating element when the moving contact bridge 130 is in contact with the stationary contact assembly 200 and the position of the magnetic rotating element when the moving contact bridge 130 is disconnected from the stationary contact assembly 200. The coil assembly driving the magnetic rotating element to rotate is a technique well-known to those skilled in the art and will not be described in detail here.

[0101] In one embodiment, the first heat dissipation hole 510 is connected to the first arc extinguishing gap 612 in a one-to-one correspondence.

[0102] The first arc-extinguishing gap 612 is connected to the first heat dissipation hole 510 in a one-to-one correspondence to ensure the heat dissipation effect of the first heat dissipation hole 510 on the heat in the first arc-extinguishing gap 612.

[0103] As an alternative embodiment to the above embodiment, at least two first heat dissipation holes 510 are provided, and each first arc extinguishing gap 612 is connected to at least two first heat dissipation holes 510.

[0104] Each first arc-extinguishing gap 612 is connected to at least two first heat dissipation holes 510, thereby further improving the heat dissipation effect.

[0105] In one embodiment, the second heat dissipation hole 520 is connected to the second arc extinguishing gap 622 in a one-to-one correspondence.

[0106] As an alternative embodiment to the above embodiment, at least two second heat dissipation holes 520 are provided, and each second arc-extinguishing gap 622 communicates with at least two second heat dissipation holes 520. Similar to the first heat dissipation hole 510 and the first arc-extinguishing gap 612, further details are omitted here.

[0107] Optionally, the first heat dissipation hole 510 can be connected to the end of the first arc extinguishing gap 612 or to the side of the first arc extinguishing gap 612; the second heat dissipation hole 520 can be connected to the end of the second arc extinguishing gap 622 or to the side of the second arc extinguishing gap 622, without specific limitation here.

[0108] In one embodiment, the relay further includes a first mounting mechanism and a second mounting mechanism, both of which are disposed within the mounting housing 500. A first arc-extinguishing gate 611 is disposed in the first mounting mechanism, and a second arc-extinguishing gate 621 is disposed in the second mounting mechanism.

[0109] The first mounting mechanism and the second mounting mechanism are respectively used to install the first arc-extinguishing grid 611 and the second arc-extinguishing grid 621 inside the mounting housing 500, so as to ensure the installation reliability of the first arc-extinguishing grid 611 and the second arc-extinguishing grid 621 inside the mounting housing 500.

[0110] Optionally, the connection between the first mounting mechanism and the first arc-extinguishing grid 611 can be a snap-fit ​​connection, a threaded connection, or an adhesive connection, etc., without specific limitations here; the connection between the second mounting mechanism and the second arc-extinguishing grid 621 can be a snap-fit ​​connection, a threaded connection, or an adhesive connection, etc., without specific limitations here.

[0111] Please see Figure 6 and Figure 9 In one embodiment, the mounting housing 500 includes a base 530 and a cover 540, the base 530 and the cover 540 are assembled together, the first mounting mechanism includes a first mounting member 710 and a second mounting member 720, the first mounting member 710 is disposed on the base 530, the second mounting member 720 is disposed on the cover 540, one end of the first arc extinguishing grid 611 is disposed on the first mounting member 710, and the other end of the first arc extinguishing grid 611 is disposed on the second mounting member 720.

[0112] One end of the first arc-extinguishing grid 611 is mounted on the first mounting member 710 on the base 530. Then, the cover 540 is assembled on the base 530, so that the other end of the first arc-extinguishing grid 611 is mounted on the second mounting member 720 on the cover 540, thereby realizing the assembly of the mounting shell 500. In this way, not only can the installation process of the first arc-extinguishing grid 611 be simplified, but the relative ends of the first arc-extinguishing grid 611 can also be fixed by the first mounting member 710 and the second mounting member 720, further improving the installation reliability of the first arc-extinguishing grid 611 in the mounting shell 500.

[0113] Furthermore, the base 530 has a receiving groove 531, in which the moving contact component 100, the stationary contact component 200, the first arc extinguishing component 610, the second arc extinguishing component 620 and the first mounting component 710 are all disposed. The cover 540 and the receiving groove 531 surround each other to form a mounting cavity.

[0114] Please see Figure 7 , Figure 10 , Figure 12 , Figure 13 , Figure 16 as well as Figure 17 In one embodiment, the first mounting member 710 is provided with a first mounting groove 711, the second mounting member 720 is provided with a second mounting groove 721, one end of the first arc extinguishing grid 611 is inserted into the first mounting groove 711, the other end of the first arc extinguishing grid 611 is inserted into the second mounting groove 721, at least two first heat dissipation holes 510 are provided, at least one first heat dissipation hole 510 is opened on the bottom wall of the first mounting groove 711, and at least one first heat dissipation hole 510 is opened on the bottom wall of the second mounting groove 721.

[0115] The first mounting groove 711 and the second mounting groove 721 can position the opposite ends of the first arc-extinguishing grid 611, thereby installing the first arc-extinguishing grid 611 inside the mounting housing 500. At the same time, the first heat dissipation hole 510 provided on the bottom wall of the first mounting groove 711 and the second heat dissipation hole 520 provided on the bottom wall of the second mounting groove 721 can dissipate the heat in the first arc-extinguishing gap 612, further ensuring the heat dissipation effect and thus realizing arc extinguishing.

[0116] Furthermore, the first mounting groove 711 extends along the second direction so that one end of all the first arc-extinguishing grids 611 is spaced apart in the first mounting groove 711. Similarly, the second mounting groove 721 extends along the second direction so that the other end of all the first arc-extinguishing grids 611 is spaced apart in the second mounting groove 721.

[0117] Please see Figure 7 , Figure 10 , Figure 13 and Figure 17 In one embodiment, the first mounting mechanism further includes at least one first partition 712 disposed in the first mounting groove 711, and the first mounting mechanism further includes at least one second partition 722 disposed in the second mounting groove 721, wherein the first partition 712 and the second partition 722 are both located in the first arc extinguishing gap 612.

[0118] The first partition 712 can position at least two first arc-extinguishing grids 611 spaced apart in the first mounting groove 711, preventing the first arc-extinguishing grids 611 from moving arbitrarily in the first mounting groove 711. Similarly, the first partition 712 can position at least two first arc-extinguishing grids 611 spaced apart in the second mounting groove 721, preventing the first arc-extinguishing grids 611 from moving arbitrarily in the second mounting groove 721, thus ensuring the positioning effect of the first arc-extinguishing grids 611.

[0119] Furthermore, the first partition 712 is provided with at least two and spaced apart in the first mounting groove 711 along the second direction, and a first mounting position is formed between two adjacent first partitions 712 along the second direction. The first mounting position is used to install one end of the first arc-extinguishing grid 611. Correspondingly, the second partition 722 is provided with at least two and spaced apart in the second mounting groove 721 along the second direction, and a second mounting position is formed between two adjacent second partitions 722 along the second direction. The second mounting position is used to install the other end of the first arc-extinguishing grid 611.

[0120] Furthermore, the two adjacent first partitions 712 can clamp the first arc-extinguishing grid 611 in the first mounting position, and the two adjacent second partitions 722 can clamp the first arc-extinguishing grid 611 in the second mounting position, thereby positioning the relative ends of the first arc-extinguishing grid 611.

[0121] Furthermore, the first partition 712 can be disposed on the side wall of the first mounting groove 711 or on the bottom wall of the first mounting groove 711, as long as the position of the first partition 712 avoids the first heat dissipation hole 510, and no specific limitation is made here.

[0122] Furthermore, in one embodiment, each first arc-extinguishing gap 612 is provided with two first partitions 712, the two first partitions 712 are respectively located at opposite ends of the first arc-extinguishing gap 612 along the first direction, and the first heat dissipation hole 510 is located between the two first partitions 712.

[0123] Please see Figure 6 and Figure 9 In one embodiment, the mounting housing 500 includes a base 530 and a cover 540, the base 530 and the cover 540 are assembled together, the second mounting mechanism includes a third mounting member 810 and a fourth mounting member 820, the third mounting member 810 is disposed on the base 530, the fourth mounting member 820 is disposed on the cover 540, one end of the second arc-extinguishing grid 621 is disposed on the third mounting member 810, and the other end of the second arc-extinguishing grid 621 is disposed on the fourth mounting member 820.

[0124] Please see Figure 8 , Figure 11 , Figure 14 , Figure 15 , Figure 18 as well as Figure 19In one embodiment, the third mounting member 810 is provided with a third mounting groove 811, the fourth mounting member 820 is provided with a fourth mounting groove 821, one end of the second arc extinguishing grid 621 is inserted into the third mounting groove 811, the other end of the second arc extinguishing grid 621 is inserted into the fourth mounting groove 821, and at least two second heat dissipation holes 520 are provided, at least one second heat dissipation hole 520 is opened on the bottom wall of the third mounting groove 811, and at least one second heat dissipation hole 520 is opened on the bottom wall of the fourth mounting groove 821.

[0125] Please see Figure 15 and Figure 19 In one embodiment, the second mounting mechanism further includes at least one third partition 812 disposed in the third mounting groove 811, and the second mounting mechanism further includes at least one fourth partition 822 disposed in the fourth mounting groove 821, wherein the third partition 812 and the fourth partition 822 are both located in the second arc extinguishing gap 622.

[0126] The structure, purpose, and effect of the third mounting component 810 are similar to those of the first mounting component 710, and the structure, purpose, and effect of the fourth mounting component 820 are similar to those of the second mounting component 720, so they will not be described again here.

[0127] Further, please refer to Figure 12 The first partition 712 can also extend along the depth direction of the first mounting groove 711 to the outside of the first mounting groove 711 and connect with the side wall of the receiving groove 531. The third partition 812 can also extend along the depth direction of the third mounting groove 811 to the outside of the third mounting groove 811 and connect with the side wall of the receiving groove 531. This will not be described in detail here.

[0128] In some embodiments, the first mounting mechanism further includes a first mounting plate, on which all the first arc-extinguishing grids 611 are spaced apart. With this arrangement, all the first arc-extinguishing grids 611 can be placed on the first mounting plate first, and then one end of all the first arc-extinguishing grids 611 can be inserted into the first mounting groove 711. Under the action of the first mounting plate, one end of all the first arc-extinguishing grids 611 can be inserted into the first mounting groove 711 together, thereby improving the insertion efficiency of the first arc-extinguishing grids 611.

[0129] In some embodiments, the second mounting mechanism further includes a second mounting plate, which, like the first mounting plate, is used to integrate and install the arc-extinguishing grid before inserting it into the corresponding mounting slot; further details will not be provided here.

[0130] Optionally, the first mounting plate and the second mounting plate can be plastic plates or metal plates, etc., without specific limitations.

[0131] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0132] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A relay, characterized in that, include: A movable contact assembly, wherein the movable contact assembly is provided with a first movable contact and a second movable contact spaced apart along a first direction; A stationary contact component is provided, wherein the stationary contact component and the moving contact component are spaced apart along a second direction, the second direction forming an angle with the first direction. The stationary contact component is provided with a first stationary contact point and a second stationary contact point. The first stationary contact point and the first moving contact point are positioned opposite each other, and the second stationary contact point and the second moving contact point are positioned opposite each other. The first stationary contact point and the first moving contact point form a first contact unit, and the second stationary contact point and the second moving contact point form a second contact unit. The first arc extinguishing component includes at least two first arc extinguishing grids. All the first arc extinguishing grids are located on the side of the first contact unit away from the second contact unit. All the first arc extinguishing grids are spaced apart along the second direction, and a first arc extinguishing gap is formed between two adjacent first arc extinguishing grids. as well as The mounting housing has at least one first heat dissipation hole. The moving contact component, the stationary contact component, and the first arc extinguishing grid are all disposed inside the mounting housing. Each of the first heat dissipation holes is connected to at least one first arc extinguishing gap.

2. The relay according to claim 1, characterized in that, The relay further includes a second arc-extinguishing component, which includes at least two second arc-extinguishing grids. All the second arc-extinguishing grids are located on the side of the second contact unit away from the first contact unit. All the second arc-extinguishing grids are spaced apart along the second direction. A second arc-extinguishing gap is formed between two adjacent second arc-extinguishing grids. The mounting housing is provided with at least one second heat dissipation hole, and each second heat dissipation hole communicates with at least one second arc-extinguishing gap.

3. The relay according to claim 2, characterized in that, The first heat dissipation hole has a first opening and a second opening that are connected, and the first opening and the second opening are at least partially offset in the direction toward the first arc-extinguishing component; or / and, The second heat dissipation hole has a third opening and a fourth opening that are connected to each other, and the third opening and the fourth opening are at least partially offset in the direction toward the second arc extinguishing component.

4. The relay according to claim 2, characterized in that, The first heat dissipation hole has a first opening and a second opening that are connected, and the path of the first heat dissipation hole is bent along the direction from the first opening toward the second opening; or / and, The second heat dissipation hole has a third opening and a fourth opening that are connected, and the path of the second heat dissipation hole is bent along the direction of the third opening toward the fourth opening.

5. The relay according to claim 2, characterized in that, The first heat dissipation hole has a first hole segment and a second hole segment that are connected to each other, and the center line of the first hole segment and the center line of the second hole segment form an angle; or / and, The second heat dissipation hole has a third hole segment and a fourth hole segment that are connected to each other, and the center line of the third hole segment and the center line of the fourth hole segment form an angle.

6. The relay according to claim 2, characterized in that, The first heat dissipation hole has a first aperture, a second aperture, and a third aperture that are connected to each other. The first aperture communicates with the inside of the mounting housing, and the second aperture and the third aperture are both connected to the outside of the mounting housing; or / and, The second heat dissipation hole has a fourth hole, a fifth hole and a sixth hole that are connected to each other. The fourth hole is connected to the inside of the mounting shell, and the fifth hole and the sixth hole are both connected to the outside of the mounting shell.

7. The relay according to claim 2, characterized in that, The moving contact component includes a moving contact bridge, with a first moving contact and a second moving contact spaced apart on the moving contact bridge along the first direction. The moving contact bridge is capable of reciprocating along the second direction and moving closer to or further away from the stationary contact component, so that the first moving contact contacts or disconnects from the first stationary contact, and the second moving contact connects or disconnects from the second stationary contact. Specifically, when the first moving contact is disconnected from the first stationary contact, the projection of the first arc-extinguishing component toward the first contact unit covers the gap between the first moving contact and the first stationary contact; when the second moving contact is disconnected from the second stationary contact, the projection of the second arc-extinguishing component toward the second contact unit covers the gap between the second moving contact and the second stationary contact.

8. The relay according to claim 2, characterized in that, The first heat dissipation hole is connected to the first arc extinguishing gap in a one-to-one correspondence; or, The first heat dissipation hole is provided with at least two, and each of the first arc extinguishing gaps communicates with at least two of the first heat dissipation holes; or, The second heat dissipation hole and the second arc extinguishing gap are connected in a one-to-one correspondence; or, The second heat dissipation hole is provided with at least two, and each of the second arc extinguishing gaps is connected to at least two of the second heat dissipation holes.

9. The relay according to claim 2, characterized in that, The relay further includes a first mounting mechanism and a second mounting mechanism, both of which are disposed within the mounting housing. The first arc-extinguishing gate is disposed in the first mounting mechanism, and the second arc-extinguishing gate is disposed in the second mounting mechanism.

10. The relay according to claim 9, characterized in that, The mounting housing includes a base and a cover, the base and the cover are assembled together, the first mounting mechanism includes a first mounting component and a second mounting component, the first mounting component is disposed on the base, the second mounting component is disposed on the cover, one end of the first arc extinguishing grid is disposed on the first mounting component, and the other end of the first arc extinguishing grid is disposed on the second mounting component.

11. The relay according to claim 10, characterized in that, The first mounting component has a first mounting groove, the second mounting component has a second mounting groove, one end of the first arc-extinguishing grid is inserted into the first mounting groove, the other end of the first arc-extinguishing grid is inserted into the second mounting groove, at least two first heat dissipation holes are provided, at least one first heat dissipation hole is provided on the bottom wall of the first mounting groove, and at least one first heat dissipation hole is provided on the bottom wall of the second mounting groove.

12. The relay according to claim 11, characterized in that, The first mounting mechanism further includes at least one first partition portion disposed in the first mounting groove, and the first mounting mechanism further includes at least one second partition portion disposed in the second mounting groove, wherein both the first partition portion and the second partition portion are located in the first arc extinguishing gap.

13. The relay according to claim 9, characterized in that, The mounting housing includes a base and a cover, the base and the cover are assembled together, the second mounting mechanism includes a third mounting member and a fourth mounting member, the third mounting member is disposed on the base, the fourth mounting member is disposed on the cover, one end of the second arc extinguishing grid is disposed on the third mounting member, and the other end of the second arc extinguishing grid is disposed on the fourth mounting member.

14. The relay according to claim 13, characterized in that, The third mounting component is provided with a third mounting groove, the fourth mounting component is provided with a fourth mounting groove, one end of the second arc-extinguishing grid is inserted into the third mounting groove, the other end of the second arc-extinguishing grid is inserted into the fourth mounting groove, and at least two second heat dissipation holes are provided, at least one second heat dissipation hole is opened on the bottom wall of the third mounting groove, and at least one second heat dissipation hole is opened on the bottom wall of the fourth mounting groove.

15. The relay according to claim 14, characterized in that, The second mounting mechanism further includes at least one third partition provided in the third mounting groove, and the second mounting mechanism further includes at least one fourth partition provided in the fourth mounting groove, wherein the third partition and the fourth partition are both located in the second arc extinguishing gap.

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