Relay

Abstract

The utility model discloses a relay, and belongs to the field of electrical equipment. The relay comprises: a housing; the driving assembly is installed in the shell, and a containing cavity is formed between the driving assembly and the inner wall of the shell; the static contact is arranged on the shell, and at least part of the static contact extends into the accommodating cavity; the movable contact plate is located in the containing cavity, and the movable contact plate is connected with the driving assembly; and arc extinguishing gas is arranged in the accommodating cavity. The connecting part of the static contact and the movable contact plate is arranged in the accommodating cavity filled with the arc extinguishing gas, so that the arc extinguishing capability of the relay is relatively high, the arc extinguishing effect is relatively good, and the service life of the relay is relatively long.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of electrical equipment, and particularly relates to a relay. BACKGROUND

[0002] The relay has important applications in industrial automation, home appliance control, automobile electronics and communication, etc. With the rapid development of power supply technology, the power supply voltage is getting higher and higher. In the use process of the traditional relay, the moving contact plate and the static contact point are generally exposed to the air environment. When cutting off the high-voltage and large-current load, the arc may be discharged or continuously burned at the contact position. The relay has poor arc extinguishing effect, shortens the service life, and even causes the surrounding devices to abnormally operate or burn out. CONTENT OF THE UTILITY MODEL

[0003] The application aims to at least solve one of the technical problems in the related art. To this end, the application provides a relay which has strong arc extinguishing capability.

[0004] In a first aspect, the application provides a relay, comprising:

[0005] a shell;

[0006] a driving assembly, which is installed in the shell, and a containing cavity is formed between the driving assembly and the inner wall of the shell;

[0007] a static contact point, which is installed in the shell and at least part of the static contact point extends into the containing cavity;

[0008] a moving contact plate, which is located in the containing cavity and connected with the driving assembly; wherein

[0009] the containing cavity is provided with arc extinguishing gas.

[0010] According to the relay of the application, the connecting part of the static contact point and the moving contact plate is arranged in the containing cavity filled with arc extinguishing gas, so that the relay has strong arc extinguishing capability, good arc extinguishing effect and long service life.

[0011] According to an embodiment of the application, the shell comprises an inner shell and an outer shell, the outer shell is arranged outside the inner shell, the driving assembly is installed in the outer shell, the containing cavity is formed between the inner wall of the inner shell and the driving assembly, and the static contact point penetrates through the outer shell and the inner shell.

[0012] According to the relay of the application, the containing cavity filled with arc extinguishing gas is formed between the inner shell and the driving assembly, so that fast arc extinguishing can be realized, the relay has strong arc extinguishing capability, good arc extinguishing effect and long service life.

[0013] According to one embodiment of the present application, the outer shell comprises an upper shell and a lower shell, the driving assembly is installed in the lower shell, and the static contact penetrates the upper shell and the inner shell.

[0014] According to the relay of the present application, the outer shell is connected by the upper shell and the lower shell, so that the internal components of the relay are convenient to disassemble and assemble.

[0015] According to one embodiment of the present application, the mounting seat is connected with the static contact and the shell, and the mounting seat is used to be connected with the installation scene.

[0016] According to the relay of the present application, the mounting seat occupies a small space and has a good heat dissipation capacity by the assembly relationship between the mounting seat, the static contact and the shell.

[0017] According to one embodiment of the present application, the mounting seat comprises a bending part and a side plate, the bending part is connected with the side plate and extends in a direction perpendicular to the side plate, the bending part is connected with the static contact, and the side plate is connected with the shell.

[0018] According to the relay of the present application, the mounting seat is connected with the static contact and the shell by the assembly of the bending part and the side plate, so that the assembly is simple and the mounting is stable.

[0019] According to one embodiment of the present application, the shell is provided with a plurality of positioning members, and the mounting seat is installed between the plurality of positioning members.

[0020] According to the relay of the present application, the mounting seat is installed on the shell by the installation positioning edge of the side plate of the mounting seat, so that the assembly is simple and the operation is easy.

[0021] According to one embodiment of the present application, the mounting seat is provided with a mounting hole, and the mounting seat is connected with the installation scene through the mounting hole.

[0022] According to the relay of the present application, the relay is installed in the electrical equipment through the mounting hole of the mounting seat, so that the connection is stable.

[0023] According to one embodiment of the present application, the driving assembly comprises a driving rod and a driving unit, the driving rod is arranged in the shell in a first direction, the moving contact plate is installed on one end of the driving rod close to the static contact, and the driving unit is used to drive the moving contact plate through the driving rod.

[0024] According to the relay of the present application, the driving rod and the driving unit are arranged to drive the moving contact plate to contact or disconnect with the static contact, so that the relay is controlled to be turned on or turned off, the reaction is fast, and the automation degree is high.

[0025] According to one embodiment of the present application, the driving assembly further comprises an elastic member, the elastic member is sleeved on the driving rod, and the elastic member is connected to the side of the moving contact plate away from the static contact point.

[0026] According to the relay of the present application, the contact reliability is improved, the damage of the mechanical vibration to the static contact point is reduced, and the service life of the moving contact plate is prolonged by arranging the elastic member between the moving iron core and the static iron core and on the side of the moving contact plate away from the static contact point.

[0027] According to one embodiment of the present application, the relay further comprises a guide cylinder, the guide cylinder is installed in the accommodating cavity, the driving rod is installed in the guide cylinder, and the driving unit is sleeved on the outer wall of the guide cylinder.

[0028] According to the relay of the present application, the movement track of the driving rod is ensured not to deviate by arranging the guide cylinder, and then the stability of the disconnection and connection of the moving contact plate and the static contact point is ensured, and the safety and reliability of the electrical equipment are high.

[0029] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0030] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings.

[0031] Figure 1 is a sectional view of a relay provided by an embodiment of the present application;

[0032] Figure 2 is one of structural schematic diagrams of a relay provided by an embodiment of the present application;

[0033] Figure 3 is another of structural schematic diagrams of a relay provided by an embodiment of the present application;

[0034] Figure 4 is a third of structural schematic diagrams of a relay provided by an embodiment of the present application;

[0035] Figure 5 is a structural schematic diagram of a mounting seat provided by an embodiment of the present application;

[0036] Figure 6 is a structural schematic diagram of a lower shell provided by an embodiment of the present application;

[0037] Figure 7 is a structural schematic diagram of an upper shell provided by an embodiment of the present application.

[0038] Reference Signs:

[0039] Relay 1000;

[0040] Housing 100, inner housing 110, outer housing 120, upper housing 121, lower housing 122, positioning member 130, self-tapping hole 140, positioning column 150, insulation groove 160;

[0041] Driving rod 210, moving iron core 221, static iron core 222, coil 223, first magnetic yoke 224, second magnetic yoke 225, elastic member 230, first elastic member 231, second elastic member 232;

[0042] Accommodation cavity 300;

[0043] Static contact 400;

[0044] Moving contact plate 500;

[0045] Mounting seat 600, bending part 610, bolt via hole 611, side plate 620, self-tapping bolt via hole 621, mounting positioning edge 622, mounting hole 630;

[0046] Guide cylinder 700;

[0047] Framework 800;

[0048] Positioning rubber pad 910, combination bolt 920, self-tapping screw 930;

[0049] First direction z. DETAILED DESCRIPTION

[0050] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary only, for the purpose of explanation of the present application, and should not be understood as a limitation of the present application.

[0051] The principle of the relay 1000 proposed in the present application is described in detail as follows:

[0052] The present application provides a relay 1000, which is described below with reference to Figures 1-7 The relay 1000 according to the embodiments of the present application is described.

[0053] As Figure 1 shown, the relay 1000 of the embodiments of the present application comprises a housing 100, a driving assembly, a static contact 400 and a moving contact plate 500.

[0054] The housing 100 can be made of plastic material, aluminum alloy, steel or ceramic material, which is not specifically limited in the present embodiment.

[0055] As Figure 1As shown, the drive assembly is installed inside the housing 100, and a receiving cavity 300 is formed between the drive assembly and the inner wall of the housing 100.

[0056] The stationary contact 400 is mounted on the housing 100, and at least a portion of the stationary contact 400 extends into the receiving cavity 300.

[0057] In this embodiment, the stationary contact 400 is installed on the upper part of the housing 100, and part of the stationary contact 400 extends into the receiving cavity 300 after penetrating the housing 100.

[0058] like Figure 1 As shown, the movable contact plate 500 is located inside the receiving cavity 300, and the movable contact plate 500 is connected to the driving assembly, which is used to drive the movable contact plate 500 to move.

[0059] The movable contact plate 500 is adjustablely positioned within the receiving cavity 300. The movable contact plate 500 includes a first state and a second state. In the first state, the movable contact plate 500 is in contact with the stationary contact 400, and the circuit is connected. In the second state, the movable contact plate 500 is disconnected from the stationary contact 400, and the circuit is disconnected.

[0060] The cavity 300 is equipped with arc-extinguishing gas.

[0061] Arc-quenching gases can be nitrogen, argon, hydrogen, or a mixture of nitrogen and hydrogen.

[0062] In this embodiment, hydrogen can be used as the arc-extinguishing gas. Hydrogen has good arc-extinguishing performance, with an arc-extinguishing capacity approximately 7.5 times that of air. It also has a high arc voltage and a fast arc root movement speed, enabling it to quickly extinguish the arc.

[0063] Relays are widely used in industrial automation, home appliance control, automotive electronics, and communications. With the rapid development of power supply technology, power supply voltages are becoming increasingly higher. Traditional relays typically expose the moving and stationary contacts to the air during use. When disconnecting high-voltage, high-current loads, arcing may occur at the contact points or the arc may continue to burn. Since relays lack arc-extinguishing devices, the air around the moving and stationary contacts has poor arc-extinguishing effect, which shortens the lifespan of the relay and may even cause malfunctions or burnout of surrounding equipment and components.

[0064] In this embodiment, a receiving cavity 300 is formed between the driving component and the inner wall of the housing 100. The receiving cavity 300 is filled with arc-extinguishing gas. The stationary contact 400 is installed on the upper part of the housing 100, and part of the stationary contact 400 extends into the receiving cavity 300 after penetrating the housing 100. The moving contact moves within the receiving cavity 300 to achieve contact or disconnection with the stationary contact 400. The moving contact plate 500 and the stationary contact 400 are in the arc-extinguishing gas in the sealed environment of the housing 100. The arc-extinguishing gas has good arc-extinguishing performance and thermal conductivity, and has the ability to extinguish and disconnect arcs with high voltage and high current.

[0065] According to the relay 1000 provided in the embodiment of the present application, the connecting part of the static contact 400 and the moving contact plate 500 is arranged in the accommodating cavity 300 filled with arc extinguishing gas, so that the relay 1000 has strong arc extinguishing capability, good arc extinguishing effect, and long service life.

[0066] In some embodiments, as shown in Figure 1 and Figure 3 The housing 100 can include an inner housing 110 and an outer housing 120.

[0067] As shown in Figure 1 The outer housing 120 is arranged outside the inner housing 110.

[0068] The driving assembly is mounted in the outer housing 120, and the accommodating cavity 300 is formed between the inner wall of the inner housing 110 and the driving assembly, and the static contact 400 penetrates through the outer housing 120 and the inner housing 110.

[0069] The inner housing 110 can be made of plastic material, aluminum alloy, steel, or ceramic material, and in the embodiment, the inner housing 110 can be made of ceramic material, which has good insulation and high temperature resistance, and the arc extinguishing gas encapsulated between the ceramic material inner housing 110 and the driving assembly can achieve rapid arc extinguishing.

[0070] The outer housing 120 can be made of plastic material, resin, aluminum alloy, steel, or ceramic material, and in the embodiment, no specific limitation is made.

[0071] In the embodiment, the moving contact plate 500 and the static contact 400 are in the hydrogen gas medium sealed by the ceramic material inner housing 110, the hydrogen gas has good arc extinguishing performance and heat conduction performance, the ceramic material inner housing 110 has excellent airtightness, which can effectively prevent hydrogen gas leakage and avoid external gas entering the arc extinguishing chamber, thereby ensuring the purity of hydrogen gas as arc extinguishing gas and improving the insulation performance of the arc extinguishing chamber, so that the relay 1000 has high voltage and large current arc extinguishing and breaking capability.

[0072] It should be noted that due to the high-efficiency arc extinguishing capability of hydrogen gas, the opening distance of the moving contact plate 500 and the static contact 400 can be adaptively reduced, and the volume and weight of the relay 1000 can be further reduced, thereby improving the compactness and portability of the electrical equipment.

[0073] According to the relay 1000 provided in the embodiment of the present application, the connecting part of the static contact 400 and the moving contact plate 500 is arranged in the accommodating cavity 300 filled with arc extinguishing gas, so that the relay 1000 has strong arc extinguishing capability, good arc extinguishing effect, and long service life.

[0074] In some embodiments, as shown in Figure 6 and Figure 7 The outer shell 120 can include an upper shell 121 and a lower shell 122.

[0075] The drive assembly is mounted in the lower shell 122, and the static contact 400 penetrates the upper shell 121 and the inner shell 110.

[0076] In this embodiment, the outer shell 120 can include an upper shell 121 and a lower shell 122, which are detachably connected, facilitating the installation of the drive assembly and the moving contact plate 500 into the shell 100. The upper shell 121 and the inner shell 110 are provided with a positioning rubber pad 910, facilitating positioning and installation. The static contact 400 penetrates the upper shell 121 and the inner shell 110 and extends into the accommodation cavity 300, which is provided with arc-extinguishing gas, facilitating assembly.

[0077] According to the relay 1000 provided in the embodiments of the present application, the outer shell 120 is connected by the upper shell 121 and the lower shell 122, facilitating the disassembly and assembly of the internal components of the relay 1000.

[0078] In some embodiments, as shown in Figures 1-4 The relay 1000 can further include a mounting seat 600.

[0079] The mounting seat 600 is connected with the static contact 400 and the shell 100, and is used to be connected with the installation scene.

[0080] In this embodiment, the mounting seat 600 can be a mounting copper bar, and the static contact 400 is connected with the mounting copper bar. The mounting copper bar is fixedly connected with the shell 100, saving installation space and having simple structure and low cost.

[0081] In the related art, the static contact overcurrent working connection external high-voltage circuit needs to be integrally formed with the shell by injection molding. The relay has poor high-temperature resistance, is prone to high-temperature deformation when a large current overflows, and is prone to melting when short-circuited. A separate installation fixing part needs to be designed on the shell, occupying a large space and having high manufacturing and installation cost.

[0082] In this embodiment, the mounting seat 600 is connected with the static contact 400, facilitating independent positioning. The mounting seat 600 is arranged outside the shell 100, having good heat dissipation effect, not affecting the high-temperature resistance of the shell 100 in a high-temperature state of large current working, having simple manufacturing process, and being low in cost.

[0083] According to the relay 1000 provided in the embodiments of the present application, the mounting seat 600 occupies a small space and has good heat dissipation capacity by setting the assembly relationship between the mounting seat 600 and the static contact 400 and the shell 100.

[0084] In some embodiments, as shown in Figure 5 The mounting seat 600 can include a bending portion 610 and a side plate 620.

[0085] The bending portion 610 is connected with the side plate 620, and the bending portion 610 extends in a direction perpendicular to the side plate 620. The bending portion 610 is connected with the static contact 400, and the side plate 620 is connected with the shell 100.

[0086] In the embodiment, the bending portion 610 and the side plate 620 can be integrally formed. The bending portion 610 can be provided with a bolt through hole 611, and the bending portion 610 is connected with the static contact 400 through the bolt through hole 611. The side plate 620 is provided with a self-tapping bolt through hole 621, and the side plate 620 is connected with the upper shell 121 and the lower shell 122 of the shell 100 through the self-tapping bolt through hole 621.

[0087] According to the relay 1000 provided in the embodiment of the application, by setting the mounting seat 600 as two parts of the bending portion 610 and the side plate 620, the mounting seat 600 is facilitated to be connected with the static contact 400 and the shell 100, the assembly is simple, and the mounting is stable.

[0088] In some embodiments, as shown in Figure 2 and Figure 6 The shell 100 can be provided with a plurality of positioning members 130.

[0089] As shown in Figure 2 The mounting seat 600 is mounted between the plurality of positioning members 130.

[0090] In the embodiment, the side plate 620 of the mounting seat 600 is provided with a mounting positioning edge 622, and the mounting positioning edge 622 is used to cooperate with the plurality of positioning members 130 to fix the mounting seat 600 to the shell 100.

[0091] According to the relay 1000 provided in the embodiment of the application, by setting the mounting positioning edge 622 on the side plate 620 of the mounting seat 600, the mounting seat 600 is facilitated to be mounted to the shell 100, the assembly is simple, and the operation is easy.

[0092] In some embodiments, as shown in Figure 5 The mounting seat 600 can be provided with a mounting hole 630.

[0093] The mounting seat 600 is connected with the installation scene through the mounting hole 630.

[0094] In the embodiment, one end of the side plate 620 of the mounting seat 600 away from the bending portion 610 is provided with the mounting hole 630, and the mounting seat 600 is mounted in the electrical equipment through the mounting hole 630.

[0095] According to the relay 1000 provided in the embodiment of the present application, the mounting hole 630 is arranged on the mounting base 600, so that the relay 1000 is mounted in the electrical equipment through the mounting hole 630, and the connection is stable.

[0096] In some embodiments, as shown in Figure 1 The driving assembly can include a driving rod 210 and a driving unit.

[0097] The driving rod 210 is arranged in the housing 100 along a first direction z, and the moving contact plate 500 is mounted on one end of the driving rod 210 close to the static contact point 400. The driving unit is used to drive the moving contact plate 500 through the driving rod 210.

[0098] It should be noted that the first direction z in the embodiment is the height direction of the relay 1000.

[0099] In the embodiment, the driving unit can include a moving iron core 221, a static iron core 222 and a coil 223. The moving iron core 221 is connected with the driving rod 210, the static iron core 222 is located between the moving iron core 221 and the moving contact plate 500, and the coil 223 is sleeved outside the moving iron core 221 and the static iron core 222. When an external power supply input voltage is input to the relay 1000, the coil 223 is electrified to generate a magnetic field. The moving iron core 221 generates an upward movement force under the external electromagnetic force, and moves towards the static iron core 222. The driving rod 210 is fixedly connected with the moving iron core 221, and the driving rod 210 drives the moving contact plate 500 to move upward. After contacting the static contact point 400, the moving contact plate 500 continues to move upward. The movement distance of the moving iron core 221 relative to the static iron core 222 is greater than the distance of the moving contact plate 500 relative to the static contact point 400. When the power is off, the working process is opposite to the above.

[0100] According to the relay 1000 provided in the embodiment of the present application, the driving rod 210 and the driving unit are arranged to drive the moving contact plate 500 to contact or disconnect the static contact point 400, control the conduction and disconnection of the relay 1000, and the reaction is fast and the automation degree is high.

[0101] In some embodiments, the driving assembly can further include an elastic member 230.

[0102] The elastic member 230 is sleeved on the driving rod 210, and the elastic member 230 is connected with one side of the moving contact plate 500 away from the static contact point 400.

[0103] The elastic member 230 can be a spring or a high polymer elastomer. In the embodiment, the elastic member 230 is a spring, which has good elastic performance, simple structure and high reliability.

[0104] In the embodiment, as shown in Figure 1As shown, the elastic member 230 can include a first elastic member 231 and a second elastic member 232, the first elastic member 231 and the second elastic member 232 are sleeved on the driving rod 210, the first elastic member 231 is located between the moving iron core 221 and the static iron core 222, and the second elastic member 232 is connected to the side of the moving contact plate 500 away from the static contact point 400.

[0105] In the embodiment, the moving iron core 221 is connected with the driving rod 210, the static iron core 222 is located between the moving iron core 221 and the moving contact plate 500, and the coil 223 is sleeved outside the moving iron core 221 and the static iron core 222. When an external power supply inputs a voltage to the relay 1000, the coil 223 is electrified to generate a magnetic field, the moving iron core 221 is driven by an external magnetic force to compress the first elastic member 231 to generate an upward movement force, and moves to the static iron core 222, the driving rod 210 is fixedly connected with the moving iron core 221, the driving rod 210 drives the moving contact plate 500 to move upward, and after contacting the static contact point 400, continues to compress the second elastic member 232 and the first elastic member 231 to move upward, the movement distance of the moving iron core 221 relative to the static iron core 222 is greater than the distance of the moving contact plate 500 relative to the static contact point 400, and the working process when power off stops working is opposite to the above. Through the effects of the first elastic member 231 and the second elastic member 232, the moving contact plate 500 can keep a stable movement track in the action process, and can absorb the impact force generated by the moving contact plate 500 in the action process, the contact reliability is high, the damage of mechanical vibration to the static contact point 400 is reduced, and the service life of the moving contact plate 500 is prolonged.

[0106] As shown in the figure, Figure 1 The relay 1000 can further include a framework 800, the driving unit further includes a first magnetic yoke 224 and a second magnetic yoke 225, the framework 800, the first magnetic yoke 224 and the second magnetic yoke 225 form a coil 223 cylinder, the coil 223 is installed in the coil 223 cylinder, the coil 223 cylinder is sleeved outside the moving iron core 221 and the static iron core 222, and the inner wall of the inner shell 110 and the outer wall of the coil 223 cylinder form the accommodating cavity 300.

[0107] According to the relay 1000 provided in the embodiment of the application, the elastic member 230 is arranged between the moving iron core 221 and the static iron core 222 and on the side of the moving contact plate 500 away from the static contact point 400, the contact reliability is improved, the damage of mechanical vibration to the static contact point 400 is reduced, and the service life of the moving contact plate 500 is prolonged.

[0108] In some embodiments, as shown in the figure, Figure 1 The relay 1000 can further include a guide cylinder 700.

[0109] The guide cylinder 700 is installed in the accommodating cavity 300, the driving rod 210 is installed in the guide cylinder 700, and the driving unit is sleeved outside the outer wall of the guide cylinder 700.

[0110] In this embodiment, the moving iron core 221 and the static iron core 222 are installed in the guide cylinder 700, the coil 223 is sleeved on the outer wall of the guide cylinder 700, the guide cylinder 700 can ensure that the movement trajectory of the driving rod 210 does not deviate, and at the same time, the guide cylinder 700 can electrically isolate the moving iron core 221, the static iron core 222 and the coil 223, prevent short circuit or electric leakage between the iron core and the coil 223, and thus improve the safety and reliability of the equipment.

[0111] According to the relay 1000 provided in the embodiment of the present application, the movement trajectory of the driving rod 210 is ensured not to deviate by arranging the guide cylinder 700, and then the stability of the disconnection and connection of the moving contact plate 500 and the static contact point 400 is ensured, and the safety and reliability of the electrical equipment are higher.

[0112] In some embodiments, the mounting seat 600 is a mounting copper bar, the mounting copper bar is connected to the static contact point 400 through the combination bolt 920, and the mounting copper bar is connected to the external high-voltage loop. The mounting copper bar is suspended and fixed through the boss threaded hole of the upper shell 121, and does not conduct heat to the outer shell 120, has a good heat dissipation effect, and the side plate 620 of the mounting copper bar is also provided with a mounting and overcurrent connection hole. The mounting copper bar can also play a role in overcurrent while being mounted. The outer shell 120 of the relay 1000 does not need to be designed with a fixed mounting foot. The moving contact plate 500 and the static contact point 400 work in the ceramic containing cavity 300 cavity sealed with hydrogen medium, and have a good arc extinguishing effect when short-circuiting and large-current disconnection, which ensures the safety of the electrical equipment. At the same time, due to the high-efficiency arc extinguishing capability of hydrogen, the opening distance of the moving contact plate 500 and the static contact point 400 can be adaptively reduced, the volume and weight of the relay 1000 can be further reduced, the compactness and portability of the electrical equipment are improved, the product space and cost of the electrical equipment are saved, and the service life of the relay 1000 and the safety of the vehicle can be more reliably ensured.

[0113] As shown in Figure 1 , the mounting copper bar is fixedly mounted on the static contact point 400 through the combination bolt 920; as shown in Figure 3 , the mounting copper bar is fixedly mounted on the upper shell 121 and the lower shell 122 through the self-tapping screw 930; as shown in Figure 5 , the mounting copper bar is designed with a bolt via hole 611 position, and a self-tapping screw via hole 621 is used to connect the upper shell 121 and the lower shell 122. The mounting copper bar is also provided with a mounting positioning edge 622 for positioning in the up-down and left-right directions of the outer shell 120.

[0114] As shown in Figure 7As shown, the upper housing 121 has a positioning post 150 on its side, which protrudes from the outer housing 120 and is used to position the copper busbar. The positioning post 150 has internal threads for connection with the copper busbar, preventing high-temperature heat from being conducted to the outer housing 120 during overcurrent operation. The upper housing 121 has an insulating groove 160 located between two copper busbars to increase the creepage distance between them.

[0115] In some embodiments, a boss may also be provided on the side of the upper housing 121 for positioning and installing copper busbars.

[0116] like Figure 6 As shown, the lower housing 122 is designed with a self-tapping threaded hole 140, which protrudes from the outer housing 120, for positioning and installing the copper busbar, and to prevent high temperature conduction to the outer housing 120 during overcurrent operation. The lower housing 122 is designed with three positioning elements 130 for positioning and installing the copper busbar.

[0117] According to the relay 1000 provided in the embodiments of this application, by setting the connection part between the stationary contact 400 and the moving contact plate 500 in the containment cavity 300 filled with arc-extinguishing gas, the relay 1000 has a strong arc-extinguishing capability, a good arc-extinguishing effect, and a long service life. The mounting copper busbar connected to the stationary contact 400 is independently positioned and arranged on the outside of the housing 120, which has a good heat dissipation effect. The manufacturing process is simple and the cost is low. The mounting copper busbar connecting the stationary contact 400 and the housing 120 saves installation space.

[0118] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0119] In the description of the application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0120] In the description of the application, "first feature" and "second feature" can include one or more of the features.

[0121] In the description of the application, "a plurality of" means two or more.

[0122] In the description of the application, the first feature "above" or "below" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them.

[0123] In the description of the application, the first feature "above", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in height.

[0124] In the description of the application, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the application. In the description of the application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0125] Although embodiments of the application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirit of the application, and the scope of the application is defined by the claims and their equivalents.

Claims

1. A relay, characterized in that, include: case; A drive assembly is installed inside the housing, and a receiving cavity is formed between the drive assembly and the inner wall of the housing; A stationary contact, which is mounted on the housing and at least a portion of the stationary contact extends into the receiving cavity; A movable contact plate is located within the receiving cavity and is connected to the driving assembly; wherein, the receiving cavity is provided with arc-extinguishing gas.

2. The relay according to claim 1, characterized in that, The housing includes an inner housing and an outer housing. The outer housing is disposed outside the inner housing. The drive assembly is installed inside the outer housing. The receiving cavity is formed between the inner wall of the inner housing and the drive assembly. The stationary contact penetrates through the outer housing and the inner housing.

3. The relay according to claim 2, characterized in that, The outer casing includes an upper casing and a lower casing, the drive assembly is installed inside the lower casing, and the stationary contact passes through the upper casing and the inner casing.

4. The relay according to claim 1, characterized in that, Also includes: The mounting base is connected to the stationary contact and the housing, and is used to connect to the installation environment.

5. The relay according to claim 4, characterized in that, The mounting base includes a bent portion and a side plate. The bent portion is connected to the side plate and extends in a direction perpendicular to the side plate. The bent portion is connected to the stationary contact point, and the side plate is connected to the housing.

6. The relay according to claim 4, characterized in that, The housing is provided with multiple positioning elements, and the mounting base is installed between the multiple positioning elements.

7. The relay according to claim 4, characterized in that, The mounting base is provided with mounting holes, and the mounting base is connected to the installation scene through the mounting holes.

8. The relay according to any one of claims 1-7, characterized in that, The driving assembly includes a driving rod and a driving unit. The driving rod is disposed in the housing along a first direction. The moving contact plate is installed at one end of the driving rod near the stationary contact point. The driving unit is used to drive the moving contact plate through the driving rod.

9. The relay according to claim 8, characterized in that, The drive assembly also includes an elastic element, which is fitted onto the drive rod and connected to the side of the moving contact plate away from the stationary contact.

10. The relay according to claim 8, characterized in that, It also includes a guide cylinder, which is installed inside the receiving cavity, a drive rod is installed inside the guide cylinder, and a drive unit is fitted onto the outer wall of the guide cylinder.

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