Relay, distribution box, and communication device

Abstract

Embodiments of the present application relate to the technical field of relay structures, and provide a relay, a distribution box, and a communication device. A push rod is located in a first accommodating cavity of a base, two outer wall surfaces of the push rod facing away from each other in a first direction have protruding contact surfaces, the contact surfaces are opposite to the inner surfaces of two side walls of the base, the contact surfaces and the inner surfaces of the side walls are respectively provided with protruding sliding blocks and slide grooves, and the sliding blocks are inserted into the slide grooves and slide along the slide grooves, realizing the sliding of the push rod in a second direction, then a moving contact is driven to slide and to abut against or be separated from a stationary contact on the base, achieving the switching of the relay. When the push rod slides relative to the base, the contact surfaces come into contact with and rub against the inner surfaces of the side walls, and the outer walls of the sliding blocks come into contact with and rub against the inner walls of the slide grooves, wherein the contact surfaces are surfaces formed by protruding partial areas on the outer wall surfaces of the push rod. The contact surfaces and the sliding blocks both have a relatively small size, which reduces the frictional resistance of the push rod and the moving contact during sliding, ensuring that long-stroke high-speed switching of the relay is realized under the condition of smooth and reliable movement of the moving contact.

Description

Relays, distribution boxes and communication equipment

[0001] This application claims priority to Chinese Patent Application No. 202410804146.5, filed on June 20, 2024, entitled “Relay, Distribution Box and Communication Equipment”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of relay structure technology, and in particular to a relay, a distribution box, and a communication device. Background Technology

[0003] With the development and innovation of industrial technology, the continuous and reliable power supply of key components in power distribution systems to meet high power demands has gradually become a major focus. For example, in practical applications such as networks, data centers, and computing equipment, the damage caused by power outages is enormous, and the requirements for the continuous reliability of power supply are extremely high.

[0004] Most current network and computing devices employ a hybrid power supply architecture, typically using two power inputs. When one input fails, the other quickly switches to ensure reliable operation. Power switching relies on a relay, which includes a slider, a base, and two sets of contacts. Each contact set includes a moving contact and a stationary contact. The slider has a first rib extending downwards along the length of the base. Multiple second ribs perpendicular to the first rib are located at the bottom of the first rib, forming an I-shaped limiting structure. The base has a corresponding first groove with a clearance cavity for the slider's limiting structure to slide along the base's length. The interaction between the first rib and the first groove allows the slider to slide back and forth on the base, thereby causing the moving contact in the two contact sets to slide, changing the on / off state of the two contact sets, and thus switching the circuit power supply.

[0005] However, the aforementioned relays suffer from high frictional resistance during the sliding of the moving contact, which affects the switching speed. Summary of the Invention

[0006] This application provides a relay, a distribution box, and a communication device that reduce the frictional resistance of the push rod and the sliding of the moving contact, increase the sliding speed of the moving contact, and realize the long-stroke high-speed switching of the relay.

[0007] A first aspect of this application provides a relay, including a base, a stationary contact, a push rod, and a moving contact. The base has a first receiving cavity and includes two sidewalls opposite each other along a first direction. The stationary contact is disposed on the base and is at least partially located within the first receiving cavity.

[0008] The push rod is located in the first receiving cavity. The push rod has raised contact surfaces on its two outer walls facing away from each other along the first direction. The contact surfaces are opposite to the inner surfaces of the two side walls of the base. One of the contact surfaces and the inner surfaces of the side walls has a raised slider, and the other has a groove. At least a portion of the groove extends along the second direction. The slider is inserted into the groove and slides along the groove so that the push rod slides relative to the base along the second direction, which intersects the first direction.

[0009] The moving contact is mounted on the push rod. Driven by the push rod, the moving contact abuts against or separates from the stationary contact, thereby changing the on / off state of the stationary and moving contacts and switching the relay. Taking an example where the push rod has a slider on its contact surface and a groove on the base, the push rod is placed in the first receiving cavity. The raised contact surfaces on the two outer walls of the push rod are opposite to the inner surfaces of the two side walls of the base. When the slider of the push rod slides within the groove of the base, causing the push rod to slide relative to the base in a second direction, the contact surface will come into contact with and rub against the inner surfaces of the two side walls of the base. The contact surface is formed by a portion of the raised area on the outer wall of the push rod. The area of ​​the contact surface is controllable and can be small, reducing the friction area between the outer wall of the push rod and the base, thereby reducing the frictional resistance of the sliding of the push rod and the moving contact, increasing the sliding speed of the push rod and the moving contact, which is beneficial for increasing the switching speed of the relay, realizing long-stroke high-speed switching of the relay, and effectively improving the power supply continuity and reliability of the communication equipment.

[0010] When the slider of the push rod slides along the slide groove, there will also be contact friction between the outer walls on both sides of the slider and the inner walls on both sides of the slide groove. The slider is a raised structure on the contact surface of the push rod, and the contact area is small. The volume of the slider is also small, which makes the friction area between the slider and the slide groove smaller. This can further reduce the frictional resistance of the push rod and the moving contact, and realize the high-speed switching of the relay.

[0011] In addition, the slider is inserted into the groove, and the contact surface contacts the side wall of the base. The groove and the two side walls of the base can play a good role in resisting and limiting the sliding of the slider, thereby limiting the sliding of the slider and the push rod along the thickness direction (such as perpendicular to the first and second directions) and the first direction. This ensures that the push rod can move linearly relative to the base in the second direction, ensuring the smooth and reliable movement of the push rod, and also helps to increase the sliding speed of the push rod.

[0012] In one possible implementation, the contact surface has a raised slider, and a groove is formed through the inner surface of the sidewall. This helps ensure the strength of the push rod while meeting its sliding requirements. Furthermore, making the groove a through-groove through the sidewall reduces the contact area of ​​the groove and also helps reduce the contact friction area between the slider and the groove.

[0013] In one possible implementation, the slider includes a first friction surface and a second friction surface facing away from each other. When the slider slides along the groove and the push rod slides in a second direction, the first and second friction surfaces contact the inner surface of the groove. The first and second friction surfaces are arc-shaped convex surfaces. Thus, when the first and second friction surfaces contact the inner surface of the groove, the first friction surface only contacts and rubs against the inner surface of the groove at the arc-shaped convex portion, and the second friction surface also only contacts and rubs against the inner surface of the groove at the arc-shaped convex portion, further reducing the contact friction area between the slider and the groove, and reducing the frictional resistance of the push rod and moving contact sliding.

[0014] In one possible implementation, the chute includes a first segment and a second segment that are sequentially connected, the extension directions of the first segment and the extension directions of the second segment intersect, and the first segment extends along the second direction.

[0015] The base also includes a top wall located on one side of the two side walls. The top wall has an assembly opening communicating with the first receiving cavity. The second segment extends to the top wall and forms a notch on its outer surface communicating with the assembly opening. When assembling the push rod and the base, the slider on the push rod can be aligned with the notch on the top wall of the base, and the entire push rod can be aligned with the assembly opening on the top wall. Pushing the push rod inserts it into the first receiving cavity of the base, causing the slider to be inserted into the second segment of the slide groove and slide along the second segment. The assembly of the push rod and moving contact with the base is achieved when the slider slides to the position where the second segment connects to the first segment. This assembly method is simple and convenient, facilitates assembly, reduces assembly steps, and improves assembly efficiency.

[0016] In one possible implementation, the base has a second receiving cavity that communicates with the first receiving cavity, and the first and second receiving cavities are distributed sequentially along a second direction.

[0017] The relay also includes a drive mechanism located within the second receiving cavity. The drive mechanism is equipped with a transmission component that cooperates with the push rod. The drive mechanism drives the push rod to slide along a second direction via the transmission component. This transmission component facilitates the transmission connection between the drive mechanism and the push rod, improving the flexibility of the transmission method and enabling control of the push rod's linear movement along the second direction.

[0018] In one possible implementation, the push rod has a mounting groove at one end adjacent to the drive mechanism. A transmission component is disposed within the mounting groove and is rotatable relative to the mounting groove. The transmission component can also rotate about its centerline within the mounting groove. This flexible connection between the drive mechanism and the push rod provides a certain amount of rotatable allowance between them. This ensures that the drive mechanism can drive the push rod to slide along the second direction via the transmission component. The rotatable allowance between the transmission component and the push rod can absorb any offset driving force, allowing the push rod to maintain linear sliding along the second direction, thus achieving automatic adjustment and control of the push rod's linear motion direction.

[0019] In one possible implementation, the transmission component includes an assembly part and a connecting part, with the assembly part connected to the drive mechanism via the connecting part.

[0020] The assembly groove includes a first mating groove and a second mating groove that are connected. The assembly part is located in the first mating groove, and the connecting part is located in the second mating groove. The second mating groove extends along a second direction. The second mating groove helps to further ensure that the transmission component drives the push rod to move linearly along the second direction, and facilitates the push rod to achieve high-speed linear movement along the second direction.

[0021] In one possible implementation, the inner wall surface of the first mating groove and the outer wall surface of the assembly part include arc-shaped surfaces. The outer wall surface of the assembly part mates with the inner wall surface of the first mating groove, enabling the assembly part to rotate within the first mating groove. The assembly method is simple and easy to implement.

[0022] In one possible implementation, the push rod has a mounting port on the top wall facing the base. The mounting port communicates with the assembly slot and allows the transmission component to pass through. That is, the transmission component can pass through the mounting port and be assembled in the assembly slot, rotating relative to the push rod within the assembly slot. This facilitates the assembly of the transmission component and the push rod, improving assembly convenience and efficiency.

[0023] In one possible implementation, the relay includes two first contact groups and two second contact groups, which are staggered along a second direction. Each first contact group and each second contact group includes a moving contact and a stationary contact.

[0024] The relay has a first state and a second state. The drive mechanism drives the push rod and the moving contact to slide, realizing the switching of the relay between the first state and the second state. When the relay is in the first state, the moving contact and the stationary contact of the first contact group are in contact and conducting, while the moving contact and the stationary contact of the second contact group are separated and disconnected.

[0025] When the relay is in the second state, the moving and stationary contacts of the first contact group are separated, while the moving and stationary contacts of the second contact group are in contact and conducting. Thus, by driving the push rod and moving contact to slide via the drive mechanism, the on / off state of the first and second contact groups is changed, achieving the switching of the relay state. This, in turn, enables the switching of the power supply circuit through the relay, ensuring continuous and reliable power supply to the communication equipment.

[0026] In one possible implementation, the drive mechanism is further provided with a pusher, which is located on one side of the transmission component. When the transmission component slides, the pusher also slides with it, thus allowing the pusher to move along with the moving contact, which can be used to monitor the movement state of the moving contact.

[0027] The relay also includes a first auxiliary contact, a second auxiliary contact, and a resilient contact piece. The first auxiliary contact and the second auxiliary contact are respectively disposed on two opposite side walls of the base along a first direction. At least the resilient contact piece is located inside the base, and one end of the resilient contact piece is fixed to the side of the first auxiliary contact facing away from the moving contact.

[0028] When the relay is in the first state, the other end of the elastic contact piece elastically abuts against the side of the second auxiliary contact facing the moving contact. When the relay switches from the first state to the second state, the pushing member drives the other end of the elastic contact piece to move away from the second auxiliary contact. When the relay is in the second state, the other end of the elastic contact piece separates from the second auxiliary contact. A detection current can be applied to the first auxiliary contact. When the relay is in the first state, if the moving and stationary contacts of the first contact group are connected, and the moving and stationary contacts of the second contact group are disconnected, the first and second auxiliary contacts can form a circuit, and the current can be detected on the second auxiliary contact side.

[0029] When the relay is in the second state, such as when the moving and stationary contacts of the first contact group are open and the moving and stationary contacts of the second contact group are closed, the first auxiliary contact and the second auxiliary contact are open and cannot form a circuit, so no current can be detected on the second auxiliary contact side.

[0030] This enables the detection of changes in the on / off states of the first and second contact groups, thus achieving real-time monitoring of relay state switching. Compared to detecting the on / off states of the moving and stationary contacts at the positions of the first and second contact groups, using relatively independent first and second auxiliary contacts and elastic contact pieces to detect the movement state of the moving contact does not occupy space within the first receiving cavity, increases the available arc-extinguishing space at the first and second contact groups, and also simplifies the structural layout at the positions of the first and second contact groups.

[0031] Furthermore, the circuits of the first auxiliary contact, the second auxiliary contact, and the elastic contact are relatively independent from the circuits of the first contact group and the second contact group in the push rod. The detection current applied to the first auxiliary contact, the second auxiliary contact, and the elastic contact can be a low-voltage current, which has relatively low detection requirements, is simple to design and easy to implement, and has higher safety.

[0032] In one possible implementation, the moving contact extends along a third direction, which is perpendicular to both the first and second directions. Moving contacts are located at both ends of the moving contact along the third direction. Specifically, the moving contacts are distributed on the push rod and within the base in a manner where their extension direction is perpendicular to the bottom and top walls of the base, and can move linearly along the second direction relative to the base and the stationary contact with the push rod. The vertical distribution of the moving contacts along the thickness direction of the base facilitates increased arc-extinguishing space and allows for the distribution of the arc-extinguishing structure and arc-blowing magnets, ensuring arc-extinguishing reliability within a limited space. For example, the arc-blowing magnets used for arc extinguishing can also be distributed along the thickness direction, freeing up space along the width direction within the base and increasing the space available for arc-extinguishing design.

[0033] In one possible implementation, each stationary contact includes a first stationary contact piece and a second stationary contact piece. The first and second stationary contact pieces of one stationary contact are respectively used to conduct electricity with the two moving contacts of a moving contact. The first and second stationary contact pieces of each stationary contact extend along a third direction. This allows the stationary contacts to also adopt a vertical distribution along the thickness direction of the base, which facilitates corresponding conduction with the moving contacts and also helps to increase the arc-extinguishing space, thus facilitating the distribution of the arc-extinguishing structure and the arc-blowing magnet.

[0034] Furthermore, dividing the stationary contact into two parts, the first stationary contact piece and the second stationary contact piece, helps to improve the structural layout flexibility of the stationary contact, increases the current flow area of ​​the stationary contact, and improves the heat dissipation effect of the stationary contact.

[0035] In one possible implementation, the first stationary contact includes a first extension and a second extension connected in sequence. The extension directions of the first extension and the second extension intersect. The first extension has a stationary contact for conducting with the moving contact. That is, the first stationary contact can achieve connection and disconnection with the moving contact through the stationary contact on the first extension. The added second extension increases the current-carrying area of ​​the first stationary contact, improves the heat dissipation of the first stationary contact and the entire stationary contact, reduces or avoids the risk of the relay overheating when connected to high-power loads, and further improves the stability and reliability of the relay.

[0036] The second stationary contact includes a third extension and a fourth extension connected in sequence. The extension directions of the third extension and the fourth extension intersect. The third extension has a stationary contact for conducting with the moving contact. The second stationary contact can achieve switching with the moving contact through the stationary contact on the third extension. The added fourth extension can increase the current-carrying area of ​​the second stationary contact, improve the heat dissipation effect of the second stationary contact and the entire stationary contact, and solve the problem of high temperature rise of the relay in high-power load scenarios.

[0037] The first extension and the third extension extend into the first receiving cavity, and the second extension and the fourth extension are located on the two side walls of the base along the first direction.

[0038] In one possible implementation, the base has multiple first slots on both side walls along the first direction, and the second and fourth extensions are respectively inserted into the first slots. This effectively enhances the limiting strength of the first and second stationary contacts, improves the assembly stability of the stationary contact on the base, reduces or avoids the problem of stationary contact bouncing when the moving contact impacts the stationary contact at high speed, prevents the risk of stationary contact deflection due to contact impact, and further improves the reliability and stability of the relay.

[0039] The base also includes a bottom wall. In the third direction, the bottom wall and the top wall of the base are located on opposite sides of the two side walls. A first slot extends through the bottom wall, and a second extension and a fourth extension extend out of the first receiving cavity through the first slot. This ensures that the second and fourth extensions have a large surface area in the third direction, improving the heat dissipation effect and assembly stability of the stationary contact. Furthermore, allowing the second and fourth extensions to extend outside the base also helps to further enhance the heat dissipation effect of the first and second stationary contact plates.

[0040] In one possible implementation, the relay further includes a first arc-extinguishing magnet and a second arc-extinguishing magnet, located on opposite sides of the base along a third direction. The positions of the first and second arc-extinguishing magnets in the third direction correspond to the conductive contact positions of the moving and stationary contacts, forming an arc-extinguishing magnetic field. The first and second arc-extinguishing magnets are arranged vertically along the third direction, freeing up space in the width direction of the base, increasing the arc-extinguishing space, ensuring arc-extinguishing reliability, and facilitating reliable arc extinguishing in high-power load scenarios.

[0041] The relay also includes a housing that covers a base. The housing has a first mounting groove on its side facing away from the top wall of the base, and a second mounting groove on the outer surface of the bottom wall of the base. A first arc-blowing magnet and a second arc-blowing magnet are respectively disposed within the first and second mounting grooves. This facilitates the creation of assembly openings on the top wall of the base, enabling convenient installation of push rods, moving contacts, etc.

[0042] In one possible implementation, a first arc-extinguishing grid and a second arc-extinguishing grid are respectively disposed on the two side walls of the base. The first arc-extinguishing grid is disposed adjacent to the top wall of the base, and the second arc-extinguishing grid is disposed adjacent to the bottom wall of the base. In the second direction, the positions of the first arc-extinguishing grid and the second arc-extinguishing grid correspond to the conductive contact positions of the moving contact and the stationary contact, respectively.

[0043] The moving and stationary contacts are vertically distributed within the base, directing the arc towards the two side walls of the base, near the top and bottom walls respectively. This means the arc can be directed towards the first and second arc-extinguishing grids. The first and second arc-extinguishing grids can divide the arc into multiple short arcs, accelerating the extinguishing of the arc and achieving the effect of extinguishing the arc. This improves the arc-extinguishing speed and effect, solving the problem of reliable arc extinguishing in high-power load scenarios connected to relays.

[0044] In one possible implementation, multiple cavities are respectively opened on the two side walls of the base, and the multiple cavities are distributed along the second direction. The side wall between two adjacent cavities forms a first arc-extinguishing grid. The first arc-extinguishing grid is formed by utilizing the side wall structure of the base, which can reduce the assembly process steps and facilitate assembly.

[0045] Multiple third mounting slots are also provided on both sides of the base. The second arc-extinguishing grid plate can be detachably installed in the third mounting slot, which facilitates the assembly of the second arc-extinguishing grid plate. It also facilitates the disassembly of the second arc-extinguishing grid plate, so that the interior of the first receiving cavity can be exposed through the third mounting slot. This allows for the installation of a testing device to test data such as the contact resistance and contact pressure between the moving and stationary contacts.

[0046] In one possible implementation, the base has a raised first limiting rib on its bottom wall and a raised second limiting rib on the side of the push rod facing the bottom wall. The first limiting rib abuts against the second limiting rib, and the first limiting rib can support and limit the push rod, restricting its movement downward (towards the bottom wall) in a third direction.

[0047] The push rod has a raised third limiting rib on the side facing away from the bottom wall. The relay also includes a fixing plate located on the third limiting rib. The base has second slots on two opposite side walls along the first direction, and the fixing plate is inserted into the second slots. The fixing plate can also limit the push rod, restricting its movement upward (towards the top wall) along the third direction, further ensuring that the push rod and moving contact achieve linear movement along the second direction.

[0048] The first limiting rib can be a raised rib structure on the base, with a small volume size. The second and third limiting ribs can be rib structures formed by the downward (towards the bottom wall of the base) and upward (towards the top wall of the base) protruding from the opposite side walls of the push rod in the first direction, respectively, with a small volume size. The push rod contacts the raised first limiting rib on the base and the fixing plate through the raised second and third limiting ribs, respectively. The contact area is relatively small, which helps to further reduce the frictional resistance of the push rod during the sliding process and facilitates the design of long-stroke high-speed movement of the push rod and moving contact.

[0049] A second aspect of this application provides a power distribution box, including a circuit board and any of the aforementioned relays, wherein the relays are connected to the circuit board.

[0050] A third aspect of this application provides a communication device, including an electrical device and the aforementioned power distribution box, wherein the electrical device is connected to the power distribution box. Attached Figure Description

[0051] Figure 1 is a schematic diagram of a power distribution scenario for a communication device provided in an embodiment of this application;

[0052] Figure 2 is a schematic diagram of the structure of a relay provided in an embodiment of this application;

[0053] Figure 3 is a schematic diagram of the partial disassembled structure of the relay in Figure 2;

[0054] Figure 4 is a partial disassembled structural diagram of the base and push rod in Figure 3;

[0055] Figure 5 is a schematic diagram of the assembly of the base and push rod in Figure 2;

[0056] Figure 6 is a schematic diagram of the cross-sectional structure along plane AA in Figure 5;

[0057] Figure 7 is a front view of the base and push rod assembly structure in Figure 5;

[0058] Figure 8 is a schematic diagram of the base in Figure 5;

[0059] Figure 9 is a schematic diagram of the assembly structure of the relay drive mechanism and push rod in Figure 2;

[0060] Figure 10 is a partial structural diagram of the disassembled drive mechanism and push rod in Figure 9;

[0061] Figure 11 is a schematic diagram showing the disassembled structure of the relay base, drive mechanism, push rod and stationary contact in Figure 2;

[0062] Figure 12 is a schematic diagram of the cross-sectional structure along BB when the relay in Figure 2 is in the first state;

[0063] Figure 13 is a schematic diagram of the push rod in Figure 11;

[0064] Figure 14 is a schematic diagram of the assembly of the push rod, moving contact and elastic element in Figure 11;

[0065] Figure 15 is a cross-sectional front view of the relay in Figure 12;

[0066] Figure 16 is a schematic diagram showing the disassembled structure of the relay in Figure 2, including the base, push rod, stationary contact, arc-blowing magnet, and arc-extinguishing grid.

[0067] Figure 16a is a schematic diagram of the assembly of the arc-blowing magnet and the housing of another relay provided in an embodiment of this application;

[0068] Figure 17 is a top view of the assembly of the push rod, drive mechanism, auxiliary contact, moving contact and stationary contact in Figure 11;

[0069] Figure 18 is a partial structural schematic diagram of the drive mechanism in Figure 11.

[0070] Explanation of reference numerals in the attached drawings: 100-Relay; 10-Base; 11-First receiving cavity; 12-Second receiving cavity; 131-Slide groove; 1311-First segment; 1312-Second segment; 1313-Notch; 132-First slot; 133-Second slot; 134-Cavity; 135-Third mounting slot; 136-Fourth slot; 14-Bottom wall; 141-First limiting rib; 142-First mounting slot; 15-Top wall; 20-Outer shell; 21-Second mounting slot; 30-Push rod; 31-Contact surface; 32-Slider; 321-First friction surface; 322-Second friction surface; 33-Assembly slot; 33a-First mating slot; 33b-Second mating slot; 331-Mounting opening; 34-Partition plate; 35-Through cavity; 35a-Receiving cavity; 36-Second limiting rib; 37-Third limiting rib; 38-Weight reduction cavity; 38a-Reinforcing rib position; 41-Moving contact; 41a-Moving contact point; 42-Stationary contact; 42a-Stationary contact point; 421-First stationary contact piece; 4211-First extension; 4212-Second extension; 422-Second stationary contact piece; 4221-Third extension; 4222-Fourth extension; 50-Drive mechanism; 51-Drive body; 52-Transmission component; 521-Connecting part; 522-Assembly part; 53-Pushing component; 60-Elastic component; 70-Fixing plate; 81-First arc-blowing magnet; 82-Second arc-blowing magnet; 91-First arc-extinguishing grid plate; 92-Second arc-extinguishing grid plate; 110-First auxiliary contact; 120-Elastic contact piece; 130-Second auxiliary contact; 200-Power module; 300-Electrical equipment; 400 - Transformer; 500 - Distribution cabinet; 600 - Communication equipment; 700 - Power distribution unit; 800 - Power input module; 900 - Busbar. Detailed Implementation

[0071] The terminology used in the implementation section of this application is for the purpose of explaining specific embodiments of this application only, and is not intended to limit this application.

[0072] This application provides a communication device, which can be an electronic device in the field of information and communications technology (ICT), such as a computing device, network device, data center device, data communication device, etc.

[0073] This communication equipment has a power distribution system to supply power to the equipment. With the continuous development and innovation of industrial technology, the power distribution system of communication equipment faces technical challenges of high power, high reliability, and intelligence. Typically, the cabinet power of ICT equipment is around 5000 watts, while the maximum power of cabinets for artificial intelligence (AI) clusters and supercomputers has reached 0.5 megawatts. Key components of the power distribution system must be able to adapt to these new high-power demands. Furthermore, under the premise of high power, the power distribution system must also be safe and reliable, ensuring the reliable operation of the communication equipment under the coupling of multiple physical fields and various climatic environments. For example, in the practical application of ICT equipment, the damage caused by power outages is enormous, placing extremely high demands on the continuity of power supply to the power distribution system of such equipment.

[0074] ICT equipment typically employs a power distribution architecture with primary and backup power supplies, often using an N+1 architecture. This involves n power modules with switching capabilities forming a power distribution system to provide dual-input AC power, with another power module acting as a backup. When one of the n components fails, the backup module takes over the failed component's tasks, allowing services to continue.

[0075] Figure 1 is a schematic diagram of a power distribution scenario for a communication device provided in an embodiment of this application.

[0076] For example, referring to Figure 1, two mains power sources, A and B, are used as the input power supply for the communication device 600. These two mains power sources can be input to the distribution box 601 of the communication device 600 via a transformer 400 and a distribution cabinet 500. The distribution box 601 of the communication device 600 contains a circuit board (not shown in the figure) and a set of power control modules 200 (PMs) mounted on the circuit board. Both mains power sources A and B are configured with the same set of power control modules 200. Each set of power control modules 200 connects to multiple electrical devices 300 (also called loads) via a busbar 900. For example, a set of power control modules 200 may include power module 200a and power module 200b. Mains power source A is input to power module 200a, and mains power source B is input to power module 200b. Both power module 200a and power module 200b are connected to multiple loads.

[0077] The power distribution box 601 also includes a relay 100, which is used to switch between the two inputs. The relay 100 can also be set on the circuit board. The relay 100 is connected to the power module 200. When the A-channel mains power fails, the relay 100 can quickly switch to the B-channel mains power, realizing the disconnection of the A-channel mains power and the conduction of the B-channel mains power. Power is supplied through the B-channel mains power to ensure that the communication equipment 600 does not lose service and that the electrical equipment 300 (load) does not lose power.

[0078] The distribution box 601 may also include a power distribution unit 700 (PDU) and a power input module 800 (PEM), etc., which are set between the distribution cabinet 500 and the relay 100 to distribute and process the power supplied from the distribution cabinet 500.

[0079] Relays are core components supporting the N+1 power distribution architecture of ICT equipment. With the increase in power distribution load power, more stringent requirements are placed on relays in terms of switching speed, power compatibility, arc suppression capability, size, and real-time status monitoring. For example, the switching speed of a relay mainly determines the switching time of the circuit power supply, and the length of the switching time directly affects the stable operation of communication equipment and directly determines the continuity of the power supply to the communication equipment.

[0080] A relay can include at least two contact groups. For example, a relay with two contact groups, such as a first contact group and a second contact group, can have two on / off states, such as a first state and a second state. When the relay is in the first state, the moving and stationary contacts of the first contact group are closed, and the moving and stationary contacts of the second contact group are open. The closed state of the first contact group enables the input of one circuit, such as mains power A supplying power to the device via the relay and power module 200a, while disconnecting it from mains power B.

[0081] When the relay is in the second state, the moving and stationary contacts of the first contact group can be disconnected, and the moving and stationary contacts of the second contact group can be connected. The connection of the second contact group can realize the connection input of another path. For example, the B-path mains power can supply power to the electrical equipment through the relay and power module 200b, and is disconnected from the A-path mains power.

[0082] To achieve relay state switching, a common relay may include a base and a slider slidably mounted on the base. The bottom surface of the slider may form an I-shaped limiting structure. The base may have a groove and a clearance cavity corresponding to this limiting structure. The groove extends along the length of the base, and the sliding cooperation between the limiting structure and the groove enables reciprocating movement along the length of the base. The moving contact is mounted on the slider, and the stationary contact is mounted on the base. The sliding of the slider causes the moving contact to slide, changing the on / off state of the two contact groups, thereby switching the relay state and, consequently, switching the circuit power supply.

[0083] When the slider engages with the base groove through the aforementioned I-shaped limiting structure, there is a large amount of surface-to-surface contact between the slider and the base. The contact points and contact areas are large and complex, resulting in high frictional resistance during the sliding process of the slider and moving contact. This severely affects the relay switching speed and the continuity and reliability of power supply to the communication equipment.

[0084] Based on this, this application provides a relay comprising a base and a push rod, wherein the push rod is located within a first receiving cavity of the base. The push rod has raised contact surfaces on two opposite outer wall surfaces along a first direction, and these contact surfaces face the inner surfaces of two side walls of the base. One of the contact surfaces and the inner surface of the base side walls has a raised slider, and the other has a groove. The groove extends at least partially along a second direction, and the slider is inserted into the groove and slides along it, causing the push rod to slide relative to the base in the second direction. This, in turn, causes the moving contact on the push rod to slide, resulting in contact or separation between the moving contact and the stationary contact on the base, thus achieving relay state switching. Taking an example where the push rod has a slider on its contact surface and the base has a groove, the push rod is placed within the first receiving cavity, and the raised contact surface on the outer wall of the push rod faces the inner surface of the side wall of the base. When the push rod slides relative to the base in the second direction, the contact surface will rub against the inner surface of the side wall of the base. The contact surface is a raised area on a portion of the outer wall of the push rod. The area of ​​this contact surface is controllable and can be small, reducing the friction area between the outer wall of the push rod and the base. This reduces the frictional resistance of the push rod and moving contact, increasing their sliding speed and thus improving the relay's switching speed. When the push rod's slider slides along the groove, there is also contact friction between the slider's outer wall and the groove's inner wall. The slider, being a raised structure on the push rod's contact surface, is also small in size, further reducing the frictional area between it and the groove. This further reduces the frictional resistance of the push rod and moving contact, enabling long-stroke, high-speed switching of the relay and effectively improving the power supply continuity and reliability of communication equipment.

[0085] Furthermore, the slider is inserted into the slide groove, and the two inner surfaces of the slide groove and the inner surfaces of the two side walls of the base can effectively abut and limit the sliding of the slider, thereby limiting the sliding of the slider and push rod along the thickness direction (thickness direction of the base) and the first direction. This ensures that the push rod can move linearly relative to the base in the second direction, guaranteeing smooth and reliable push rod movement, improving the smoothness of push rod sliding, and also facilitating the increase of push rod sliding speed. Under the constraints of limited space dimensions, this relay achieves millimeter-level physical switching under enhanced insulation requirements, ensuring that the load (electrical equipment) does not lose power during switching between A / B circuits. This relay is compatible with all power supplies from 3 to 6 kW, achieving a 50% reduction in power distribution space, a 50% reduction in power supply cost, and a 50% reduction in heat dissipation.

[0086] Figure 2 is a schematic diagram of the structure of a relay provided in an embodiment of this application, and Figure 3 is a partial disassembled schematic diagram of the relay in Figure 2.

[0087] Referring to Figures 2 and 3, the relay 100 includes a base 10 and a housing 20. The base 10 may have a receiving cavity (refer to the first receiving cavity 11 and the second receiving cavity 12 in Figure 3). The housing 20 may cover the base 10 to close the receiving cavity of the base 10.

[0088] The outer contour shape of the base 10 can be a three-dimensional square, for example, the outer contour shape of the base 10 can be a cuboid. The outer contour shape of the outer shell 20 can correspond to the outer contour shape of the base 10, for example, the outer contour shape of the outer shell 20 can also be a cuboid. The outer shell 20 can have a cavity (not shown in the figure). One side of the outer shell 20 can have an opening that communicates with the cavity. The outer shell 20 can be covered on the base 10. The entire base 10 can be located inside the cavity of the outer shell 20.

[0089] In the embodiments of this application, for ease of description, please refer to Figures 2 and 3. The length direction of the base 10 is taken as the y-direction, the width direction of the base 10 is taken as the x-direction, and the thickness direction of the base 10 is taken as the z-direction. The length direction, width direction and thickness direction of the base 10 can be perpendicular to each other.

[0090] Of course, in some other examples, the outer contours of the base 10 and the outer shell 20 can also be other regular or irregular shapes, such as rounded squares, cubes, etc.

[0091] Referring to Figure 3, the receiving cavity may include a first receiving cavity 11, and the base 10 may also include two sidewalls, such as sidewall 13a and sidewall 13b respectively. The sidewall 13a and sidewall 13b may be opposite each other in a first direction. For example, the first direction may be consistent with the width direction of the base 10, such as the x direction shown in the figure.

[0092] The relay 100 also includes a stationary contact 42. There can be multiple stationary contacts 42, which are disposed on the base 10. For example, the base 10 has a first slot 132, and the stationary contacts 42 can be inserted into the first slot 132.

[0093] The stationary contact 42 is at least partially located within the first receiving cavity 11. For example, the stationary contact 42 may be partially located within the first receiving cavity 11 or may partially extend outside the first receiving cavity 11. Of course, in some examples, the stationary contact 42 may also be entirely located within the first receiving cavity 11.

[0094] The relay 100 also includes a moving contact 41, as shown in Figure 3. There can be multiple moving contacts 41, and the number of moving contacts 41 can correspond one-to-one with the number of stationary contacts 42, with one moving contact 41 corresponding to one stationary contact 42. Multiple moving contacts 41 can also be located within the first receiving cavity 11, and the moving contacts 41 can abut against the stationary contacts 42 to achieve electrical conduction.

[0095] Figure 4 is a partial disassembled structural diagram of the base and push rod in Figure 3.

[0096] Referring to Figure 4, the relay 100 also includes a push rod 30, which is slidably disposed within the first receiving cavity 11. The push rod 30 can slide within the first receiving cavity 11 along a second direction. The second direction can intersect with the first direction, that is, the second direction and the first direction form a non-zero angle. For example, the second direction can be perpendicular to the first direction, such as the second direction being consistent with the length direction of the base 10, like the y-direction in the figure.

[0097] The moving contact 41 is mounted on the push rod 30. The push rod 30 slides relative to the base 10 within the first receiving cavity 11, causing the moving contact 41 to slide relative to the base 10 and the stationary contact 42 in the second direction, so that the moving contact 41 and the stationary contact 42 abut or separate, thereby changing the on / off state of the stationary contact 42 and the moving contact 41, and realizing the switching of the relay 100.

[0098] In this design, the push rod 30 may have raised contact surfaces 31 on its two opposite outer wall surfaces along the first direction (x direction), as shown in Figure 4. The push rod 30 has a raised contact surface 31 on one side of its outer wall surface along the first direction, and also a raised contact surface 31 on the other side of its outer wall surface along the first direction (see Figure 6). Referring again to Figure 4, a raised slider 32 may be present on the contact surface 31. The slider 32 can be a raised rib structure on the contact surface 31 of the push rod 30, and has a small volume.

[0099] Slots 131 can be formed on the inner surfaces of the two side walls of the base 10, that is, slots 131 are provided on the inner surface of side wall 13a and side wall 13b (see Figure 6). Continuing to refer to Figure 4, at least a portion of the slots 131 can extend along the second direction (y direction), and the slots 131 can penetrate the side walls of the base 10 in the width direction (x direction). Of course, in some examples, the slots 131 can also be blind slots formed on the inner surfaces of the side walls of the base 10, and do not penetrate the side walls of the base 10 in the width direction.

[0100] Figure 5 is a schematic diagram of the assembly of the base and push rod in Figure 2.

[0101] Referring to Figure 5, the slider 32 can be inserted into the slide groove 131 and slide along the slide groove 131, so that the push rod 30 can slide relative to the base 10 in the second direction through the cooperation of the slider 32 and the slide groove 131, thereby driving the moving contact 41 to slide and realize the state switching of the relay.

[0102] Figure 6 is a schematic diagram of the cross-sectional structure along plane AA in Figure 5.

[0103] Referring to Figure 6, the push rod 30 is placed in the first receiving cavity 11. The protruding contact surfaces 31 on the two outer walls of the push rod 30, which are opposite each other along the first direction (x direction), are respectively opposite to the inner surfaces of the side walls 13a and 13b of the base 10. The slider 32 slides in the sliding groove 131, so that when the push rod 30 slides relative to the base 10 along the second direction, the contact surfaces 31 respectively come into contact and rub against the inner surfaces of the side walls 13a and 13b of the base 10. That is, the contact surfaces 31 on the two outer walls of the push rod 30 are respectively opposite to the inner surfaces of the two side walls of the base 10 and come into contact and rub against each other during the sliding process.

[0104] The contact surface 31 is a surface formed by a protrusion in a part of the outer wall surface of the push rod 30. The area of ​​the contact surface 31 is controllable and can be small, reducing the friction area between the outer wall surface of the push rod 30 and the base 10, thereby reducing the frictional resistance of the push rod 30 and the moving contact 41, increasing the sliding speed of the push rod 30 and the moving contact 41, which is conducive to improving the switching speed of the relay and realizing the long stroke high-speed switching of the relay. For example, the switching time of the relay can reach less than or equal to 3ms, effectively improving the power supply continuity and reliability of the communication equipment.

[0105] The long stroke refers to the relatively long distance traveled by the moving contact 41 along the second direction until it abuts against the stationary contact 42 and conducts electricity. This stroke can be the sum of the distance along the second direction of the electrical clearance between the moving contact 41 and the stationary contact 42 and the distance along the second direction of the elastic compression of the moving contact 41 caused by the contact between the moving contact 41 and the stationary contact 42 (i.e., the compressive deformation of the elastic element between the moving contact and the push rod caused by the contact). This helps improve the safety and reliability of the relay. For example, if this stroke range is greater than 3mm, it can meet the high insulation requirements of the relay.

[0106] When the slider 32 of the push rod 30 slides along the slide groove 131, the two outer walls of the slider 32 and the two inner walls of the slide groove 131 will also come into contact and rub against each other. The slider 32 is a protruding structure on the contact surface 31 of the push rod 30. The area of ​​the contact surface 31 is small and the volume of the slider 32 is also small, so the friction area between the slider 32 and the slide groove 131 is small, which further reduces the frictional resistance of the push rod 30 and the moving contact 41, and realizes the high-speed switching of the relay.

[0107] The slider 32 is inserted into the slide groove 131, and the contact surface 31 contacts the side wall of the base. The slide groove 131 and the two side walls of the base 10 can effectively resist and limit the sliding of the slider 32, thereby limiting the sliding of the slider 32 and the push rod 30 along the thickness direction (z direction) and the first direction (width direction, x direction). This ensures that the push rod 30 can move linearly relative to the base 10 in the second direction, ensuring the smooth and reliable movement of the push rod 30, improving the smoothness of the sliding of the push rod 30, and also helping to increase the sliding speed of the push rod 30.

[0108] Of course, in some examples, a groove 131 can be opened on the contact surface 31 of the push rod 30, and a raised slider 32 can be provided on the inner surface of the two side walls of the base 10. The linear sliding of the push rod 30 relative to the base 10 can also be achieved through the cooperation of the slider 32 and the groove 131. Correspondingly, the contact friction area between the contact surface 31 and the inner surface of the side wall of the base 10, and between the slider 32 and the groove 131, is also small, which can also achieve high-speed switching of the relay.

[0109] In this embodiment, an example is taken where the push rod 30 has a raised slider 32 on its contact surface 31, and the base 10 has a groove 131 on its side wall. Forming the slider 32 on the push rod 30 and the groove 131 on the base 10 satisfies the sliding requirements of the push rod 30 while ensuring its strength. The groove 131 can penetrate the side wall of the base 10 in the width direction; that is, the groove 131 is a through-slot penetrating the side wall of the base 10. This reduces the contact surface 31 of the groove 131 and also reduces the contact friction area between the slider 32 and the groove 131.

[0110] The push rod 30 has multiple raised contact surfaces 31 on its two opposite outer wall surfaces along the first direction. Each contact surface 31 has a raised slider 32. The multiple contact surfaces 31 (multiple sliders 32) can be distributed sequentially at intervals along the second direction (length direction, y direction). For example, taking two sliders 32 on each outer wall surface as an example, one outer wall surface of the push rod 30 has two raised contact surfaces 31 (as shown in Figure 4), and the contact surfaces 31 have raised sliders 32. The other outer wall surface of the push rod 30 also has two raised contact surfaces 31 and sliders 32, so that the outer contour structure of the entire push rod 30 can be approximately in the shape of a "well" (as shown in Figure 13).

[0111] Correspondingly, multiple sliding grooves 131 can be provided on the inner surfaces of the two side walls 13 of the base 10. The multiple sliding grooves 131 can be distributed sequentially at intervals along the second direction, and each sliding groove 131 corresponds to a sliding engagement with a slider 32.

[0112] In this embodiment, the outer contour shape of the protruding slider 32 is not limited, as long as the slider 32 can be inserted into the slide groove 131 and slide relative to it. For example, the slider 32 can be a columnar rib structure protruding on the contact surface 31.

[0113] Figure 7 is a front view of the base and push rod assembly structure in Figure 5.

[0114] For example, to further reduce the frictional resistance between the push rod 30 and the base 10, as shown in Figure 7, the slider 32 on the contact surface 31 may include a first friction surface 321 and a second friction surface 322 that are opposite to each other, such that the first friction surface 321 and the second friction surface 322 are opposite to each other in the thickness direction (z direction).

[0115] When the slider 32 slides along the groove 131, causing the push rod 30 to slide in the second direction, the first friction surface 321 and the second friction surface 322 come into contact with the inner walls of both sides of the groove 131. The first friction surface 321 and the second friction surface 322 can be arc-shaped convex surfaces, such as the two outer wall surfaces of the slider 32 protruding outward in the thickness direction to form arc-shaped first friction surface 321 and second friction surface 322. In this way, when the first friction surface 321 and the second friction surface 322 come into contact with the inner wall of the groove 131, the first friction surface 321 only comes into contact with the inner wall of the groove 131 at the arc-shaped protrusion, and the second friction surface 322 also only comes into contact with the inner wall of the groove 131 at the arc-shaped protrusion, further reducing the contact friction area between the slider 32 and the groove 131, and reducing the frictional resistance of the push rod 30 and the moving contact sliding.

[0116] In this embodiment, the shape of the slide groove 131 is not limited. The slide groove 131 corresponds to and cooperates with the slider 32, and the slide groove 131 extends at least partially along the second direction so that the slider 32 can slide along the second direction.

[0117] For example, taking the groove 131 on sidewall 13a as an example, the structure of the groove 131 on sidewall 13b can be the same as that on sidewall 13a. Specifically, refer to the groove 131 on sidewall 13a. As shown in Figure 7, the groove 131 may include a first segment 1311 and a second segment 1312, which are sequentially connected. The first segment 1311 can extend along the second direction (y direction), so that when the slider 32 slides along the first segment 1311, the push rod 30 slides relative to the base 10 in the second direction through the slider 32.

[0118] The extension direction of the first segment 1311 intersects the extension direction of the second segment 1312, that is, a non-zero angle can be formed between the extension directions of the first segment 1311 and the second segment 1312. For example, the extension direction of the second segment 1312 can be perpendicular to the extension direction of the first segment 1311, such as the second segment 1312 extending along the thickness direction (z direction), so that the groove 131 has an L-shaped groove structure.

[0119] Figure 8 is a schematic diagram of the base structure in Figure 5.

[0120] Referring to Figure 8, the base 10 also includes a top wall 15, which is located on one side of the two side walls of the base 10, such as on one side of side walls 13a and 13b along the thickness direction (z direction). An assembly port 151a is provided on the top wall 15, which can penetrate the top wall 15 in the thickness direction. The assembly port 151a communicates with the first receiving cavity 11, allowing the push rod 30, moving contact 41, etc., to be assembled into the first receiving cavity 11 of the base 10.

[0121] The base 10 may also include a bottom wall 14, the bottom wall 14 and the top wall 15 may be opposite each other in the thickness direction (z direction), and the outer shell 20 may be disposed on the base 10 from the side of the top wall 15 of the base 10, so that the bottom wall 14 of the base 10 is located at the opening of the outer shell 20.

[0122] The second segment 1312 of the chute 131 can extend to the top wall 15 and form a notch 1313 on the outer side of the top wall 15 (the side facing away from the first receiving cavity 11), which communicates with the assembly port 151a.

[0123] When assembling the push rod 30 and the base 10, the slider 32 on the push rod 30 can be aligned with the notch 1313 on the top wall 15 of the base 10, and the entire push rod 30 can be aligned with the assembly port 151a on the top wall 15. If the push rod 30 is pushed along the thickness direction (z direction), the push rod 30 is inserted into the first receiving cavity 11 of the base 10, and the slider 32 is inserted into the second segment 1312 of the slide groove 131 and slides along the second segment 1312. Until the slider 32 slides to the position where the second segment 1312 connects with the first segment 1311, the assembly of the push rod 30 and the moving contact 41 with the base 10 is achieved. The assembly method is simple and convenient, easy to implement, and helps to reduce assembly steps and improve assembly efficiency.

[0124] Referring to Figure 8, the base 10 may also include a second receiving cavity 12, which is connected to the first receiving cavity 11. The first receiving cavity 11 and the second receiving cavity 12 may be two cavities that are sequentially distributed along the second direction within the base 10.

[0125] The relay also includes a drive mechanism (not shown in the figure), which is located in the second receiving cavity and is used to drive the push rod and the moving contact to slide in the second direction.

[0126] Referring to Figure 8, an assembly port 151b can also be provided on the top wall 15 of the base 10. The assembly port 151b can penetrate the top wall 15 in the thickness direction. The assembly port 151b is connected to the second receiving cavity 12. The drive mechanism can be placed in the second receiving cavity 12 of the base 10 through the assembly port 151b.

[0127] Figure 9 is a schematic diagram of the assembly structure of the relay drive mechanism and push rod in Figure 2.

[0128] Referring to Figure 9, the drive mechanism 50 may include a drive body 51 and a transmission component 52. The drive body 51 and the transmission component 52 are connected. The drive body 51 can output a driving force along the second direction, enabling the transmission component 52 to move along the second direction (y direction).

[0129] In this embodiment, the structure and implementation of the driving body 51 of the driving mechanism 50 are not limited, as long as it can output a driving force along the second direction, causing the transmission member 52 to move along the second direction. For example, the driving mechanism 50 can be an electromagnetic driving mechanism 50 including coils, magnets, etc. After the coil is energized, the magnetic field formed can drive the transmission member 52 to perform high-speed linear motion along the second direction. By changing the direction of the current in the coil, the direction of motion of the transmission member 52 in the second direction can be changed, thereby realizing the reciprocating motion of the transmission member 52 along the second direction.

[0130] The transmission component 52 cooperates with the push rod 30, and the drive mechanism 50 drives the transmission component 52 to reciprocate along the second direction. Through the transmission component 52, the push rod 30 can be driven to slide back and forth along the second direction, thereby driving the push rod 30 and the moving contact 41 to slide along the second direction.

[0131] To enable the transmission component 52 of the drive mechanism 50 to cooperate with the push rod 30, for example, an assembly groove 33 can be provided on one end of the push rod 30 adjacent to the drive mechanism 50 at both ends along the second direction. The transmission component 52 can be disposed in the assembly groove 33 and can rotate relative to the assembly groove 33. That is, the transmission component 52 can be assembled in the assembly groove 33 of the push rod 30, so that the transmission component 52 can push and pull the push rod 30 to slide along the second direction.

[0132] The transmission component 52 can also rotate around its centerline within the assembly slot 33. This achieves a flexible connection between the drive mechanism 50 and the push rod 30, providing a certain amount of rotatable allowance between them. This ensures that the drive mechanism 50 can drive the push rod 30 to slide along the second direction via the transmission component 52. When the driving force applied to the push rod 30 by the drive mechanism 50 via the transmission component 52 has a certain offset angle from the second direction, the rotatable allowance between the transmission component 52 and the push rod 30 can absorb part of the offset driving force, allowing the push rod 30 to always maintain linear sliding along the second direction. This achieves automatic adjustment and control of the linear motion direction of the push rod 30, ensuring high-speed linear motion of the push rod 30 along the second direction.

[0133] To facilitate the assembly of the transmission component 52 and the push rod 30, an installation port 331 can be provided on one side of the push rod 30 along the thickness direction (z direction) (i.e. the side facing the top wall of the base). The installation port 331 can communicate with the assembly groove 33. The transmission component 52 can pass through the installation port 331 and be assembled in the assembly groove 33, and rotate relative to the push rod 30 in the assembly groove 33.

[0134] Figure 10 is a partial structural diagram of the disassembled drive mechanism and push rod in Figure 9.

[0135] Referring to Figure 10, the transmission component 52 of the drive mechanism 50 may include an assembly part 522 and a connecting part 521. The assembly part 522 can be connected to the drive body 51 of the drive mechanism 50 through the connecting part 521.

[0136] The assembly groove 33 may include a first mating groove 33a and a second mating groove 33b that are connected. The assembly part 522 of the transmission member 52 may be located in the first mating groove 33a, and the connecting part 521 of the transmission member 52 may be located in the second mating groove 33b, so as to assemble the transmission member 52 and the push rod 30 together.

[0137] The second mating groove 33b extends along the second direction, which helps to further ensure that the transmission component 52 drives the push rod 30 to move linearly along the second direction, and helps the push rod 30 to achieve high-speed linear movement along the second direction.

[0138] The outer wall surface of the assembly portion 522 of the transmission component 52 may include an arc-shaped surface, which may be a circular arc or an elliptical arc, etc. It should be noted that the entire outer wall surface of the assembly portion 522 may be an arc-shaped surface, such as the overall outer contour shape of the assembly portion 522 being a cylinder. Alternatively, only the outer wall surface of the portion of the assembly portion 522 that contacts and mates with the first mating groove 33a may be an arc-shaped surface.

[0139] The inner wall surface of the first mating groove 33a may also include an arc-shaped surface. The outer wall surface of the assembly part 522 mates with the inner wall surface of the first mating groove 33a, allowing the assembly part 522 to rotate within the first mating groove 33a. Correspondingly, the inner wall surface of the first mating groove 33a can be entirely arc-shaped, such as the first mating groove 33a being a circular arc-shaped groove. Alternatively, only a portion of the inner wall surface of the first assembly groove 33a may be arc-shaped.

[0140] Figure 11 is a schematic diagram showing the disassembled structure of the relay base, drive mechanism, push rod, and stationary contact in Figure 2.

[0141] For example, to achieve relay state switching, the relay may include at least two first contact groups and two second contact groups, which are arranged alternately along a second direction. Referring to Figure 11, taking two first contact groups and two second contact groups as an example, such as first contact group 401a, first contact group 401b, second contact group 402a, and second contact group 402b respectively, the first contact group 401a, second contact group 402a, first contact group 401b, and second contact group 402b can be distributed sequentially along the second direction (y direction).

[0142] Each first contact group and each second contact group includes one moving contact 41 and one stationary contact 42. That is, the relay may include at least four moving contacts 41 and four stationary contacts 42. Two moving contacts 41 of one first contact group and one second contact group are located between two stationary contacts 42 of the first contact group and the second contact group. For example, two moving contacts 41 of the first contact group 401a and the second contact group 402a are located between the stationary contacts 42 of the first contact group 401a and the second contact group 402a, and two moving contacts 41 of the first contact group 401b and the second contact group 402b are located between the stationary contacts 42 of the first contact group 401b and the second contact group 402b.

[0143] The drive head drives the push rod 30 and the moving contact 41 on the push rod 30 to slide along the second direction, which can realize the switching of the relay between the first state and the second state.

[0144] Figure 12 is a schematic diagram of the cross-sectional structure along BB when the relay in Figure 2 is in the first state.

[0145] For example, when the relay 100 is in the first state, as shown in FIG12, the moving contact 41 and stationary contact 42 of the first contact group 401a and the first contact group 401b abut and conduct, thereby connecting the power supply circuits corresponding to the first contact group 401a and the first contact group 401b. The moving contact 41 and stationary contact 42 of the second contact group 402a and the second contact group 402b separate and disconnect, thereby disconnecting the power supply circuits corresponding to the second contact group 402a and the second contact group 402b.

[0146] When the power circuits connected to the first contact group 401a and the first contact group 401b experience power failure or other problems, the drive mechanism 50 can be controlled to drive the push rod 30 to move along the second direction (y direction) via the transmission member 52. This, in turn, drives the moving contact 41 on the push rod 30 to move along the second direction. The transmission member 52 can move along the second direction toward the first receiving cavity 11, causing the moving contact 41 to move along the second direction toward the stationary contact 42 of the second contact group (second contact group 402a, second contact group 402b), thereby realizing the switching of the relay 100 from the first state to the second state.

[0147] When the relay 100 is in the second state, the moving contact 41 and stationary contact 42 of the first contact group 401a and the first contact group 401b are separated and disconnected, and the moving contact 41 and stationary contact 42 of the second contact group 402a and the second contact group 402b are connected and connected, so that the power supply circuits connected to the second contact group 402a and the second contact group 402b are connected and connected. Thus, the power supply circuit is switched through the relay 100, ensuring the continuous and reliable power supply of the communication equipment 600.

[0148] Referring to Figures 11 and 12, the moving contact 41 is mounted on the push rod 30. Exemplarily, the relay 100 may also include an elastic element 60, which is also mounted on the push rod 30 and located between the moving contact 41 and the push rod 30 (the partition 34 of the push rod 30). It should be noted that the elastic element 60 and the moving contact 41 are mounted on the push rod 30, and the elastic element 60 is elastically deformed and positioned between the moving contact 41 and the push rod 30 (partition 34).

[0149] The elastic restoring force of the elastic element 60 generates initial pressure on the moving contact 41. This initial pressure on the moving contact 41 can be greater than the Holm repulsion force generated by the moving contact 41 bearing the maximum current under short-circuit conditions, thus preventing contact welding problems in short-circuit scenarios. The initial pressure of the elastic element 60 on the moving contact 41 also ensures the assembly and contact stability of the moving contact 41, reducing or avoiding contact bounce problems when the moving contact 41 moves at high speed in a straight line and collides with the stationary contact 42.

[0150] Continuing with Figures 11 and 12, the moving contact 41 is mounted on the push rod 30 and assembled into the first receiving cavity 11 of the base 10 via the push rod 30. The moving contact 41 can extend along a third direction, which can be perpendicular to the first and second directions. For example, the third direction can be consistent with the thickness direction of the base 10, as shown by the z-direction in Figures 11 and 12. A moving contact point 41a can be provided at each end of the moving contact 41, and the extension direction of the moving contact 41 can be the direction of the line connecting the two moving contact points 41a on the moving contact 41.

[0151] The moving contacts 41 are distributed on the push rod 30 and within the base 10 in such a way that their extension direction is perpendicular to the bottom wall 14 and top wall 15 of the base 10. They can move linearly along the second direction (y-direction) relative to the base 10 and the stationary contact 42 as the push rod 30 moves. The vertical distribution of the moving contacts 41 along the thickness direction of the base 10 facilitates increased arc-extinguishing space and allows for the distribution of the arc-extinguishing structure and arc-blowing magnets, ensuring reliable arc extinguishing within a limited space. For example, the arc-blowing magnets used for arc extinguishing can also be distributed along the thickness direction, freeing up space along the width direction within the base and increasing the space available for arc extinguishing design.

[0152] Figure 13 is a schematic diagram of the push rod in Figure 11.

[0153] To achieve the assembly and vertical distribution of the moving contact 41 on the push rod 30, as exemplarily shown in Figure 13, the push rod 30 may have a through cavity 35, which may be disposed through the push rod 30 in a third direction (z direction). For example, the push rod 30 may have two through cavities 35, which may be distributed along the second direction.

[0154] Each through cavity 35 may have a partition 34, which divides one through cavity 35 into two receiving cavities 35a. If the partition 34 extends in a third direction, the partition 34 may be located in the middle of the through cavity 35, dividing the through cavity 35 into two receiving cavities 35a. In this way, the push rod 30 has at least four receiving cavities 35a for corresponding assembly of four moving contacts 41.

[0155] Figure 14 is a schematic diagram of the assembly of the push rod, moving contact and elastic element in Figure 11.

[0156] The moving contact 41 and the elastic element 60 can be disposed in the receiving cavity 35a. For example, a moving contact 41 and an elastic element 60 can be inserted and snapped into each receiving cavity 35a. The moving contact 41 and the elastic element 60 are assembled into the receiving cavity 35a by insertion and snapping. The assembly process is simple and easy to implement.

[0157] Both ends of the moving contact 41 along the third direction (z direction) can be located outside the receiving cavity 35a, and both ends of the elastic element 60 along the third direction can also be located outside the receiving cavity 35a. The elastic element 60 is located between the moving contact 41 and the partition 34, and the elastic element 60 is in a state of elastic deformation.

[0158] The moving contact 41 extends to both ends outside the receiving cavity 35a. The moving contact 41a is located at both ends of the moving contact 41, which facilitates the contact or separation between the moving contact 41a and the stationary contact of the stationary contact piece. The middle part of the moving contact 41 is located inside the receiving cavity 35a of the push rod 30. During the movement of the push rod 30, the moving contact 41 is driven to move at high speed in the second direction. It can be understood that the driving force of the push rod 30 on the movement of the moving contact 41 is applied at the middle part of the moving contact 41, which has higher motion stability, ensures the high-speed linear movement of the moving contact 41 in the second direction, and also helps to further avoid the bouncing problem of the moving contact 41 hitting the stationary contact, avoiding the risk of deflection due to impact contact between the contacts.

[0159] The partition plate 34 and the push rod 30 can be integral structural components. For example, the push rod 30 and the partition plate 34 can be integrally molded by injection molding, that is, the receiving cavity 35a on the push rod 30 is formed during the integral molding process, eliminating the need to form the receiving cavity 35a on the push rod 30 through riveting, adhesive bonding, or other methods, further simplifying the assembly process. This also helps to improve the assembly strength between the partition plate 34 and the push rod 30, thereby ensuring the assembly firmness and movement stability of the moving contact 41 and the elastic element 60 on the push rod 30.

[0160] Figure 15 is a cross-sectional front view of the relay in Figure 12.

[0161] In the actual assembly process, the push rod 30, the moving contact 41, and the elastic element 60 can be assembled into a whole and then placed in the first receiving cavity 11 of the base 10. To further ensure the high-speed linear movement of the push rod 30 and the moving contact 41 along the second direction, as exemplarily shown in Figure 15, the bottom wall 14 of the base 10 can also have a raised first limiting rib 141. The first limiting rib 141 can be a raised rib structure on the base with a small volume size. For example, two first limiting ribs 141 can be raised on the bottom wall 14 of the base 10. The first limiting rib 141 can be a raised plate-like structure, and the two first limiting ribs 141 can be distributed at intervals along the second direction (y direction).

[0162] On the side of the push rod 30 facing the bottom wall 14, there is a raised second limiting rib 36 (as shown in Figure 14). The second limiting rib 36 can be a rib structure formed by the portion of the two opposite side walls of the push rod 30 in the first direction (x direction) protruding downward (towards the bottom wall 14 of the base 10). On the side of the push rod 30 away from the bottom wall 14, there is also a raised third limiting rib 37. The third limiting rib 37 can be a rib structure formed by the portion of the two opposite side walls of the push rod 30 in the first direction (x direction) protruding upward (towards the top wall 15 of the base 10). A weight-reducing cavity 38 can be formed between the second limiting rib 36 and the third limiting rib 37, so that the volume size of the second limiting rib 36 and the third limiting rib 37 is small.

[0163] For example, the second limiting rib 36 and the third limiting rib 37 can be located between the two through cavities 35 of the push rod 30, and a reinforcing rib position 38a can be provided in the weight reduction cavity 38 between the second limiting rib 36 and the third limiting rib 37 to ensure the strength of the entire push rod 30.

[0164] When the push rod 30 is placed in the first receiving cavity 11 of the base 10, as shown in Figure 15, the second limiting rib 36 of the push rod 30 can abut against the first limiting rib 141 set on the bottom wall 14. The first limiting rib 141 can support and limit the push rod 30, limiting the movement of the push rod 30 downward (towards the bottom wall 14) in the third direction (z direction).

[0165] The relay 100 may also include a fixing plate 70. The base 10 has two opposite side walls with second slots 133 (see Figure 16). The fixing plate 70 can be inserted into the second slots 133. Continuing to refer to Figure 15, when the fixing plate 70 is inserted into the second slot of the base 10, in the third direction (z direction), the fixing plate 70 is located on the third limiting rib 37 of the push rod 30. The fixing plate 70 can also limit the push rod 30, restricting the movement of the push rod 30 upward (towards the top wall 15) in the third direction, further ensuring that the push rod 30 and the moving contact 41 achieve linear movement in the second direction (y direction).

[0166] Furthermore, the push rod 30 contacts the raised first limiting rib 141 and the fixed plate 70 on the base 10 through the raised second limiting rib 36 and the third limiting rib 37 respectively. The contact area is relatively small, which helps to further reduce the frictional resistance of the push rod 30 during the sliding process and facilitates the long-stroke high-speed motion design of the push rod 30 and the moving contact 41.

[0167] In this embodiment, the stationary contacts 42 are also vertically distributed and assembled on the base 10. For example, each stationary contact 42 may include a first stationary contact piece 421 and a second stationary contact piece 422. The first stationary contact piece 421 and the second stationary contact piece 422 of a stationary contact 42 are respectively used to conduct with a moving contact 41. For example, the first stationary contact piece 421 and the second stationary contact piece 422 respectively have stationary contact points 42a, and the two stationary contact points 42a are respectively connected with the two moving contact points 41a on a moving contact 41. For example, taking the stationary contact 42 of the first contact group 401a as an example, the structure and distribution of the stationary contacts 42 in other contact groups can refer to the structure and distribution of the stationary contacts 42 of the first contact group 401a. Referring to Figure 15, the stationary contact 42 may include a first stationary contact piece 421 and a second stationary contact piece 422. The stationary contact point 42a of the first stationary contact piece 421 and the stationary contact point 42a of the second stationary contact piece 422 respectively abut against the two moving contact points 41a of the moving contact 41 of the first contact group 401a to conduct electricity, thereby realizing the conduction of the stationary contact 42 and the moving contact 41 of the first contact group 401a.

[0168] When the push rod 30 moves the moving contact 41, the two moving contact points 41a of the moving contact 41 will move away from the first stationary contact piece 421 and the second stationary contact piece 422 of the stationary contact 42, so that the two moving contact points 41a of the moving contact 41 are separated from the two stationary contact points 42a of the first stationary contact piece 421 and the second stationary contact piece 422, respectively, so that the moving contact 41 and the stationary contact 42 of the first contact group 401a are separated and disconnected.

[0169] The first stationary contact piece 421 and the second stationary contact piece 422 of each stationary contact 42 are distributed in the third direction, which means that each stationary contact 42 also adopts a vertical distribution method arranged along the thickness direction of the base 10. On the one hand, it is convenient to correspond with the moving contact 41 for conduction, and on the other hand, it can also help to increase the arc extinguishing space and facilitate the distribution of the arc extinguishing structure and the arc blowing magnet.

[0170] Furthermore, dividing the stationary contact 42 into two parts, the first stationary contact piece 421 and the second stationary contact piece 422, is beneficial to improving the structural layout flexibility of the stationary contact 42, increasing the flow area of ​​the stationary contact 42, and improving the heat dissipation effect of the stationary contact 42.

[0171] Figure 16 is a schematic diagram showing the disassembled structure of the relay base, push rod, stationary contact, arc-blowing magnet, and arc-extinguishing grid in Figure 2.

[0172] For example, as shown in FIG16, the first stationary contact 421 may include a first extension 4211 and a second extension 4212, the first extension 4211 and the second extension 4212 being connected in sequence. The first extension 4211 has a stationary contact 42a. The first extension 4211 can extend into the first receiving cavity of the base. The first stationary contact 421 can be connected to the moving contact 41a on the moving contact 41 through the stationary contact 42a.

[0173] The extension direction of the first extension 4211 can intersect with the extension direction of the second extension 4212. For example, the extension direction of the first extension 4211 can be perpendicular to the extension direction of the second extension 4212, so that the outer contour shape of the entire first stationary contact 421 can be shaped like a figure 7. For example, the extension direction of the first extension 4211 can be consistent with the first direction (x direction), and the extension direction of the second extension 4212 can be consistent with the third direction (z direction).

[0174] That is, the first stationary contact 421 can achieve the connection and disconnection with the moving contact 41a of the moving contact 41 through the stationary contact 42a on the first extension 4211. The added second extension 4212 can increase the current-passing area of ​​the first stationary contact 421, improve the heat dissipation effect of the first stationary contact 421 and the entire stationary contact 42, reduce or avoid the risk of the relay overheating in the scenario of connecting high-power load, and further improve the stability and reliability of the relay.

[0175] Correspondingly, the second stationary contact 422 may include a third extension 4221 and a fourth extension 4222, which are connected in sequence. The third extension 4221 has a stationary contact point 42a and can extend into the first receiving cavity of the base. The second stationary contact 422 can be connected to the moving contact point 41a on the moving contact 41 through the stationary contact point 42a.

[0176] The extension direction of the third extension 4221 can intersect with the extension direction of the fourth extension 4222. For example, the extension direction of the third extension 4221 can be perpendicular to the extension direction of the fourth extension 4222, so that the outer contour shape of the entire second stationary contact 422 can also be shaped like a figure 7. For example, the extension direction of the third extension 4221 can be consistent with the first direction (x direction), and the extension direction of the fourth extension 4222 can be consistent with the third direction (z direction).

[0177] That is, the second stationary contact 422 can achieve the connection and disconnection with the moving contact 41a of the moving contact 41 through the stationary contact 42a on the third extension 4221. The added fourth extension 4222 can increase the current-passing area of ​​the second stationary contact 422, improve the heat dissipation effect of the second stationary contact 422 and the entire stationary contact 42, and solve the problem of high temperature rise of the relay in the scenario of connecting high power load.

[0178] Multiple first slots 132 can be opened on the side walls 13a and 13b of the base 10, and the second extension 4212 and the fourth extension 4222 are respectively inserted into the first slots 132.

[0179] The first slot 132 on the side wall of the base 10 can extend in a third direction, so that the second extension 4212 can be inserted into the first slot 132 from one end of the top wall 15 adjacent to the base 10 to one end of the bottom wall 14 adjacent to the base 10. The fourth extension 4222 can be inserted into the first slot 132 from one end of the top wall 15 adjacent to the base 10 to one end of the bottom wall 14 adjacent to the base 10. This effectively improves the limiting strength of the first stationary contact 421 and the second stationary contact 422, improves the assembly stability of the stationary contact 42 on the base 10, reduces or avoids the problem of the stationary contact 42 bouncing when the moving contact 41 moves at high speed and impacts the stationary contact 42, prevents the risk of the stationary contact 42 deflecting due to impact between contacts, and helps to further improve the reliability and stability of the relay.

[0180] In some examples, the first slot 132 of the base 10 can extend through the bottom wall 14 of the base 10, allowing the second extension 4212 and the fourth extension 4222 to extend out of the first receiving cavity 11 of the base 10 through the first slot 132. This ensures that the second extension 4212 and the fourth extension 4222 have a large dimensional area in the third direction, improving the heat dissipation effect and assembly stability of the stationary contact 42. Furthermore, allowing the second extension 4212 and the fourth extension 4222 to extend outside the base 10 also helps to further enhance the heat dissipation effect of the first stationary contact 421 and the second stationary contact 422.

[0181] It is understood that the moving contact 41 and the stationary contact 42 will generate an electric arc during the switching process. In order to eliminate the electric arc in time and ensure the stability and safety of the relay, as shown in Figures 15 and 16, the relay may also include a first arc-blowing magnet 81 and a second arc-blowing magnet 82.

[0182] Referring to Figure 15, the first arc-blowing magnet 81 and the second arc-blowing magnet 82 can be located on both sides of the base 10 along the third direction (z-direction). In the third direction, the positions of the first arc-blowing magnet 81 and the second arc-blowing magnet 82 correspond to the positions where the moving contact 41 and the stationary contact 42 are in contact. That is, the projection of the first arc-blowing magnet 81 and the second arc-blowing magnet 82 along the third direction can at least partially cover the positions where the moving contact 41 and the stationary contact 42 are in contact. The first arc-blowing magnet 81 and the second arc-blowing magnet 82 are arranged vertically in the third direction, which frees up space in the width direction of the base, increases the arc-extinguishing space, ensures the reliability of arc extinguishing, and facilitates reliable arc extinguishing in high-power load scenarios connected to the relay.

[0183] The number of first arc-blowing magnets 81 and the number of second arc-blowing magnets 82 can be the same as the number of first contact groups and second contact groups. For example, there can be two first arc-blowing magnets 81 and two second arc-blowing magnets 82. In the third direction, one of the first arc-blowing magnets 81 and one of the second arc-blowing magnets 82 can be located at the corresponding conductive contact positions of the moving contact 41 and stationary contact 42 of two adjacent first contact groups and second contact groups (such as first contact group 401a and second contact group 402a), respectively. The other first arc-blowing magnet 81 and the other second arc-blowing magnet 82 can be located at the corresponding conductive contact positions of the moving contact 41 and stationary contact 42 of two other adjacent first contact groups and second contact groups (such as first contact group 401b and second contact group 402b).

[0184] The first arc-blowing magnet 81 and the second arc-blowing magnet 82 form an arc-blowing magnetic field. The electric arc generated at the contact position of the moving contact 41 and the stationary contact 42 can be deflected towards the two side walls of the base 10 (the opposite side walls 13a and 13b in the first direction) under the action of the arc-blowing magnetic field, and the arc is extinguished at the two side walls of the base 10. That is, the arc generated during the opening and closing process of the moving contact 41 and the stationary contact 42 is blown towards the two side walls of the base 10 by the action of the arc-blowing magnetic field, so as to extinguish the arc in time.

[0185] For example, the first arc-blowing magnet 81 and the second arc-blowing magnet 82 can be respectively disposed on the bottom wall 14 and the top wall 15 of the base 10. Alternatively, in some examples, as shown in Figure 15, the first arc-blowing magnet 81 can be disposed on the outer shell 20, and the second arc-blowing magnet 82 can be disposed on the bottom wall 14 of the base 10, so as to facilitate the installation of the push rod 30, the moving contact 41, etc. by opening an assembly port 151 on the top wall 15 of the base 10.

[0186] For example, a first mounting groove 142 can be formed on the outer surface of the bottom wall 14 of the base 10 (the side facing away from the first receiving cavity 11), and a second mounting groove 21 (see Figure 3) can be formed on the side of the outer shell 20 facing away from the top wall 15 of the base 10. The first arc-blowing magnet 81 can be fixed in the first mounting groove 142, and the second arc-blowing magnet 82 can be fixed in the second mounting groove 21. In actual assembly, the push rod 30, moving contact 41, stationary contact 42, drive mechanism 50, first arc-blowing magnet 81, etc. are assembled onto the base 10. After the outer shell 20 is irradiated onto the base 10 and the second arc-blowing magnet 82 is assembled on the outer shell 20, a sealing process can be used to fix and protect the base 10, outer shell 20, second magnet, etc.

[0187] Figure 16a is a schematic diagram of the assembly of the arc-blowing magnet and the housing of another relay provided in an embodiment of this application.

[0188] Alternatively, in some examples, as shown in Figure 16a, the first arc-blowing magnet 81 and the second arc-blowing magnet 82 may also be distributed on the outside of the housing 20, and in the third direction, the first arc-blowing magnet 81 and the second arc-blowing magnet 82 may be located on both sides of the housing 20 respectively.

[0189] To further improve the arc extinguishing effect, as shown in Figure 16, a first arc extinguishing grid plate 91 and a second arc extinguishing grid plate 92 are respectively provided on the two side walls 13 of the base 10. That is, the first arc extinguishing grid plate 91 and the second arc extinguishing grid plate 92 are respectively provided on the side wall 13a of the base 10, and the first arc extinguishing grid plate 91 and the second arc extinguishing grid plate 92 are also respectively provided on the side wall 13b of the base 10.

[0190] The first arc-extinguishing grid plate 91 is disposed near the top wall 15 of the base 10, and the second arc-extinguishing grid plate 92 is disposed near the bottom wall 14 of the base 10. In the second direction, the positions of the first arc-extinguishing grid plate 91 and the second arc-extinguishing grid plate 92 correspond to the conductive contact positions of the moving contact 41 and the stationary contact 42, respectively.

[0191] The electric arc generated at the conductive contact position of the moving contact 41 and the stationary contact 42 can be deflected towards the side walls 13a and 13b of the base 10 under the influence of the arc-blowing magnetic field formed by the first arc-blowing magnet 81 and the second arc-blowing magnet 82. Since the moving contact 41 and the stationary contact 42 are vertically distributed within the base 10, the electric arc is blown towards the positions adjacent to the top wall 15 and the bottom wall 14 on the two side walls of the base 10, respectively. The electric arc can be blown onto the first arc-extinguishing grid plate 91 and the second arc-extinguishing grid plate 92. The first arc-extinguishing grid plate 91 and the second arc-extinguishing grid plate 92 can divide the electric arc into multiple short arcs, accelerate the extinguishing of the electric arc, and achieve the effect of extinguishing the electric arc. This helps to improve the arc extinguishing speed and the arc extinguishing effect, and solves the problem of reliable arc extinguishing in relay connection high-power load scenarios.

[0192] The first arc-extinguishing grid plate 91 and the second arc-extinguishing grid plate 92 can be formed separately and then assembled onto the base 10. Alternatively, in some examples, the first arc-extinguishing grid plate 91 and / or the second arc-extinguishing grid plate 92 can be formed using the sidewall structure of the base 10, which can reduce assembly process steps and facilitate assembly.

[0193] For example, multiple cavities can be formed on both sides of the base 10, so that a portion of the sidewall between two adjacent cavities forms an arc-extinguishing grid. Referring to Figure 16, taking the sidewall 13a of the base 10 as an example, the structure of the sidewall 13a of the base 10 is used to form a first arc-extinguishing grid 91. The forming method and structure of the first arc-extinguishing grid 91 on the sidewall 13b of the base 10 can be compared with the first arc-extinguishing grid 91 on the sidewall 13a. For example, multiple cavities 134 can be formed on the sidewall 13a, and the multiple cavities 134 can be distributed sequentially at intervals along the second direction (y direction). There is a portion of the sidewall between two adjacent cavities 134. This portion of the sidewall can be a grid-like structure, so that the multiple spaced-apart portion of the sidewall can form the first arc-extinguishing grid 91.

[0194] Multiple third mounting slots 135 are provided on both side walls of the base 10, and the second arc-extinguishing grid plate 92 can be disposed in the third mounting slot 135. The third mounting slot 135 can be a through slot, and can communicate with the first receiving cavity 11. The second arc-extinguishing grid plate 92 can be detachably disposed in the third mounting slot 135, facilitating the assembly of the second arc-extinguishing grid plate 92.

[0195] It also facilitates the disassembly of the second arc-extinguishing grid plate 92, allowing the interior of the first receiving cavity 11 to be exposed through the third mounting groove 135. This facilitates the installation of a testing device to test data such as the contact resistance and contact pressure of the moving contact 41 and the stationary contact 42.

[0196] For example, the second arc-extinguishing grid 92 can be a gas-generating arc-extinguishing grid, formed of a gas-generating material. When the electric arc generated at the contact position of the moving contact 41 and the stationary contact 42 blows towards the second arc-extinguishing grid 92, the gas-generating material of the second arc-extinguishing grid 92 decomposes under heat to generate inert gas, thereby achieving the arc-extinguishing effect.

[0197] Figure 17 is a top view of the assembly of the push rod, drive mechanism, auxiliary contact, moving contact and stationary contact in Figure 11.

[0198] Referring to Figure 17, the relay also includes a first auxiliary contact 110, a second auxiliary contact 130, and a resilient contact piece 120. The first auxiliary contact 110 and the second auxiliary contact 130 are disposed on two opposite sidewalls of the base 10 along a first direction (see Figure 4). For example, the first auxiliary contact 110 and the second auxiliary contact 130 can be disposed on the outer surfaces of the sidewalls of the base 10, respectively. For instance, the first auxiliary contact 110 can be disposed on sidewall 13b of the base 10, and the second auxiliary contact 130 can be disposed on sidewall 13a of the base 10. This avoids the first auxiliary contact 110 and the second auxiliary contact 130 occupying internal space of the base 10, improving layout flexibility and compactness.

[0199] The resilient contact 120 can extend into the base 10, such as within the receiving space between the first receiving cavity 11 and the second receiving cavity 12. Parts of the first auxiliary contact 110 and the second auxiliary contact 130 can also extend into this receiving space of the base 10. For example, the top wall 15 of the base 10 may have a clearance opening for the resilient contact 120, a portion of the first auxiliary contact 110, and a portion of the second auxiliary contact 130 to pass through and be disposed within the base 10.

[0200] Alternatively, in some examples, the first auxiliary contact 110 and the second auxiliary contact 130 are located on the outer surface of the outer wall of the base 10 and do not extend into the base 10.

[0201] For example, a fourth slot 136 may be provided on the side wall 13a and side wall 13b of the base 10 (see Figure 16). The fourth slot 136 may be located on the outer surface of the side wall 13a and side wall 13b. The first auxiliary contact 110 and the second auxiliary contact 130 may be inserted into the fourth slot 136 respectively, which facilitates the assembly of the first auxiliary contact 110 and the second auxiliary contact 130.

[0202] Referring again to Figure 17, one end of the elastic contact 120 is fixedly connected to the first auxiliary contact 110. For example, one end of the elastic contact 120 can be fixed to the side of the first auxiliary contact 110 facing the second receiving cavity (away from the moving contact 41). The elastic contact 120 can be a bent metal sheet. For example, when the elastic contact 120 is in its natural state (without elastic deformation), the other end of the elastic contact 120 can be bent and extended toward the second receiving cavity (driving body 51).

[0203] The elastic contact 120 is capable of elastic deformation. For example, when a force is applied to cause the elastic contact 120 to elastically deform, the other end of the elastic contact 120 can elastically abut against the surface of the second auxiliary contact 130 facing the first receiving cavity (facing the moving contact 41). Specifically, when the relay is in the first state, the other end of the elastic contact 120 can elastically abut against the surface of the second auxiliary contact 130 facing the first receiving cavity, and the first auxiliary contact 110 and the second auxiliary contact 130 can be electrically connected through the elastic contact 120.

[0204] Figure 18 is a partial structural schematic diagram of the drive mechanism in Figure 11.

[0205] Referring to Figure 18, the drive mechanism 50 may also include a pusher 53, which may be located on one side of the transmission member 52, such as on the side of the transmission member 52 along the thickness direction (z direction). When the transmission member 52 moves, it drives the push rod 30 and the moving contact 41 to slide along the second direction, and the pusher 53 also slides along the second direction with the transmission member 52, so that the pusher 53 can move with the moving contact 41. Through the pusher 53, the first auxiliary contact 110, the second auxiliary contact 130 and the elastic contact piece 120, the movement state of the moving contact 41 can be monitored.

[0206] For example, as shown in Figure 17, when the relay switches from the first state to the second state, the transmission member 52 slides along the second direction (y direction), causing the push rod 30 and the moving contact 41 to slide along the second direction. That is, the transmission member 52 moves toward the first receiving cavity (facing the moving contact 41), and the push member 53 on the transmission member 52 also moves toward the first receiving cavity (facing the moving contact 41), so that the push member 53 can abut against the elastic contact piece 120 and push the contact piece out. The push member 53 can drive the other end of the elastic contact piece 120 to move away from the second auxiliary contact 130.

[0207] When the relay is in the second state, the other end of the elastic contact 120 can be separated from the second auxiliary contact 130, which disconnects the first auxiliary contact 110 and the second auxiliary contact 130, breaking the electrical connection between the first auxiliary contact 110 and the second auxiliary contact 130.

[0208] The relay can apply a detection current to the first auxiliary contact 110. When the relay is in the first state, such as when the moving contact 41 and the stationary contact 42 of the first contact group are connected and the moving contact 41 and the stationary contact 42 of the second contact group are disconnected, the first auxiliary contact 110 and the second auxiliary contact 130 can form a circuit, and the current can be detected on the side of the second auxiliary contact 130.

[0209] When the relay is in the second state, such as when the moving contact 41 and stationary contact 42 of the first contact group are open and the moving contact 41 and stationary contact 42 of the second contact group are closed, the first auxiliary contact 110 and the second auxiliary contact 130 are open and cannot form a circuit, so no current can be detected on the side of the second auxiliary contact 130. This allows for the detection of changes in the on / off states of the first and second contact groups, thus enabling real-time monitoring of relay state switching. Compared to detecting the on / off states of the moving contact 41 and stationary contact 42 at the positions of the first and second contact groups, using the relatively independent first auxiliary contact 110, second auxiliary contact 130, and elastic contact piece 120 to control the movement state of the moving contact 41 does not occupy space within the first receiving cavity 11, increases the available arc-extinguishing space at the first and second contact groups, and also simplifies the structural layout at the positions of the first and second contact groups.

[0210] Furthermore, the circuits of the first auxiliary contact 110, the second auxiliary contact 130, and the elastic contact 120 are relatively independent from the circuits of the first contact group and the second contact group. The detection current applied to the first auxiliary contact 110, the second auxiliary contact 130, and the elastic contact 120 can be a low-voltage current, which has relatively low detection requirements, is simple to design and easy to implement, and has higher safety.

[0211] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal connection of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances. The terms "first," "second," "third," "fourth," etc. (if present) are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0212] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of this application, and are not intended to limit them. Although the embodiments of this application have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A relay, characterized in that, include: A base having a first receiving cavity, the base including two sidewalls opposite each other along a first direction; A stationary contact is disposed on the base and is at least partially located within the first receiving cavity; A push rod is located within the first receiving cavity. The push rod has raised contact surfaces on its two outer wall surfaces facing away from each other along a first direction. The contact surfaces are respectively opposite to the inner surfaces of the two side walls of the base. One of the contact surfaces and the inner surfaces of the side walls has a raised slider, and the other has a groove. At least a portion of the groove extends along a second direction. The slider is inserted into the groove and slides along the groove to allow the push rod to slide relative to the base along the second direction, which intersects the first direction. A moving contact is disposed on the push rod, and the moving contact is used to abut or separate from the stationary contact under the action of the push rod.

2. The relay according to claim 1, characterized in that, The contact surface has a raised slider, and the inner surface of the sidewall is provided with a through groove; The slider includes a first friction surface and a second friction surface that are opposite to each other. When the slider slides along the groove and the push rod slides in the second direction, the first friction surface and the second friction surface contact the inner side of the groove. The first friction surface and the second friction surface are arc-shaped convex surfaces.

3. The relay according to claim 2, characterized in that, The chute includes a first segment and a second segment that are sequentially connected. The extension directions of the first segment and the second segment intersect, and the first segment extends along the second direction. The base also includes a top wall, which is located on one side of the two side walls, and the top wall has an assembly opening that communicates with the first receiving cavity; The second segment extends to the top wall and forms a notch on the outer side of the top wall that communicates with the assembly port.

4. The relay according to any one of claims 1-3, characterized in that, The base has a second receiving cavity that communicates with the first receiving cavity, and the first receiving cavity and the second receiving cavity are distributed sequentially along the second direction; The relay further includes a drive mechanism located within the second receiving cavity; The drive mechanism is equipped with a transmission component, which cooperates with the push rod. The drive mechanism drives the push rod to slide in the second direction through the transmission component.

5. The relay according to claim 4, characterized in that, The push rod has an assembly groove at one end adjacent to the drive mechanism, the transmission component is disposed in the assembly groove, and the transmission component is rotatable relative to the assembly groove.

6. The relay according to claim 4, characterized in that, The relay includes two first contact groups and two second contact groups, which are staggered along a second direction. Each first contact group and each second contact group includes one moving contact and one stationary contact. The relay includes a first state and a second state. The driving mechanism drives the push rod and the moving contact to slide, thereby switching the relay between the first state and the second state. When the relay is in the first state, the moving contact and the stationary contact of the first contact group are in contact and connected, and the moving contact and the stationary contact of the second contact group are separated and disconnected. When the relay is in the second state, the moving contact and the stationary contact of the first contact group are separated and disconnected, and the moving contact and the stationary contact of the second contact group are connected and connected.

7. The relay according to claim 6, characterized in that, The drive mechanism is also provided with a pusher, which is located on one side of the transmission component; The relay further includes a first auxiliary contact, a second auxiliary contact, and a resilient contact piece. The first auxiliary contact and the second auxiliary contact are respectively disposed on two opposite sidewalls of the base along a first direction. At least the resilient contact piece is located inside the base, and one end of the resilient contact piece is fixed to the side of the first auxiliary contact facing away from the moving contact. When the relay is in the first state, the other end of the elastic contact piece elastically abuts against the side of the second auxiliary contact facing the moving contact; When the relay switches from the first state to the second state, the pusher causes the other end of the elastic contact to move away from the second auxiliary contact; When the relay is in the second state, the other end of the elastic contact is separated from the second auxiliary contact.

8. The relay according to any one of claims 1-7, characterized in that, The moving contact extends along a third direction, which is perpendicular to the first direction and the second direction respectively, and the moving contact has a moving contact point at each end along the third direction.

9. The relay according to claim 8, characterized in that, Each of the stationary contacts includes a first stationary contact piece and a second stationary contact piece, wherein the first stationary contact piece and the second stationary contact piece of one of the stationary contacts are respectively used to conduct electricity with the two moving contacts of one of the moving contacts; The first and second stationary contact pieces of each of the stationary contacts extend in a third direction.

10. The relay according to claim 9, characterized in that, The first stationary contact includes a first extension and a second extension connected in sequence. The extension directions of the first extension and the second extension intersect. The first extension has a stationary contact for communicating with the moving contact. The second stationary contact includes a third extension and a fourth extension connected in sequence. The extension directions of the third extension and the fourth extension intersect. The third extension has a stationary contact for communicating with the moving contact. The first extension and the third extension extend into the first receiving cavity, and the second extension and the fourth extension are located on the two side walls of the base along the first direction.

11. The relay according to any one of claims 1-10, characterized in that, It also includes a first arc-blowing magnet and a second arc-blowing magnet, which are located on both sides of the base along a third direction. The positions of the first arc-blowing magnet and the second arc-blowing magnet in the third direction correspond to the conductive contact positions of the moving contact and the stationary contact. The first arc-blowing magnet and the second arc-blowing magnet form an arc-blowing magnetic field. The relay also includes a housing, which is mounted on the base. The housing has a first mounting groove on the side facing away from the top wall of the base, and a second mounting groove on the outer surface of the bottom wall of the base. The first arc-blowing magnet and the second arc-blowing magnet are respectively disposed in the first mounting groove and the second mounting groove.

12. The relay according to claim 11, characterized in that, A first arc-extinguishing grid plate and a second arc-extinguishing grid plate are respectively provided on the two side walls of the base. The first arc-extinguishing grid plate is provided adjacent to the top wall of the base, and the second arc-extinguishing grid plate is provided adjacent to the bottom wall of the base. In the second direction, the positions of the first arc-extinguishing grid and the second arc-extinguishing grid correspond to the conductive contact positions of the moving contact and the stationary contact, respectively.

13. The relay according to claim 12, characterized in that, Multiple cavities are respectively formed on the two side walls of the base, and the multiple cavities are distributed along the second direction. The part of the side wall between two adjacent cavities forms the first arc-extinguishing grid plate. Multiple third mounting slots are also provided on the two side walls of the base, and the second arc-extinguishing grid plate can be detachably installed in the third mounting slot.

14. A power distribution box, characterized in that, It includes a circuit board and a relay as described in any one of claims 1-13, wherein the relay is connected to the circuit board.

15. A communication device, characterized in that, It includes electrical equipment and the power distribution box as described in claim 14, wherein the electrical equipment is connected to the power distribution box.

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