DC switch

Abstract

The utility model discloses a direct current switch, which relates to the technical field of low-voltage electric appliances and comprises a shell, an operation shaft, a wire inlet busbar and a wire outlet busbar. The shell is provided with a containing cavity, the operation shaft is installed in the containing cavity, and part of the operation shaft is arranged on the first side wall of the shell in a penetrating mode. The wire inlet busbar is installed in the accommodating cavity, and a part of the wire inlet busbar is arranged on the second side wall of the shell in a penetrating mode. The outgoing line busbar is installed in the accommodating cavity, and part of the outgoing line busbar is arranged on the third side wall of the shell in a penetrating mode. Wherein the first side wall is adjacent to the second side wall, and the third side wall is adjacent to the second side wall and is opposite to the first side wall. According to the direct current switch provided by the invention, the layout of the direct current switch terminals can be optimized, and the occupied space is reduced.

Description

Technical Field

[0001] This application relates to the field of low-voltage electrical technology, specifically to a DC switch. Background Technology

[0002] A DC switch is an electrical device used to control the on / off state of a DC circuit. DC switches are usually installed in distribution cabinets. The DC switch is electrically connected to the main circuit in the distribution cabinet through its own terminals so as to control the on / off state of the circuit.

[0003] DC switches typically have input and output terminals. Existing DC switches place the input and output terminals on opposite sides of the switch body to increase the distance between them and reduce electromagnetic interference.

[0004] However, the aforementioned DC switch requires a large amount of space for wiring in the switch cabinet, making it unsuitable for switch cabinets with limited space. Therefore, there is an urgent need to propose a DC switch to solve the problems existing in the current technology. Utility Model Content

[0005] The purpose of this application is to provide a DC switch that optimizes the layout of the DC switch terminals and reduces the space occupied.

[0006] In a first aspect, embodiments of this application provide a DC switch, including a housing, an operating shaft, an incoming busbar, and an outgoing busbar. The housing has a receiving cavity, the operating shaft is mounted in the receiving cavity, and a portion of the operating shaft passes through a first side wall of the housing. The incoming busbar is mounted in the receiving cavity, and a portion of the incoming busbar passes through a second side wall of the housing. The outgoing busbar is mounted in the receiving cavity, and a portion of the outgoing busbar passes through a third side wall of the housing. The first side wall is adjacent to the second side wall, and the third side wall is adjacent to the second side wall but opposite to the first side wall.

[0007] By setting the incoming and outgoing busbars of the DC switch on two adjacent side walls of the housing, the wiring method of the DC switch is effectively simplified while ensuring that there is an electrical clearance between the incoming and outgoing busbars. This facilitates wiring of the DC switch from the same direction and reduces the use and arrangement of conductors, thereby reducing space occupation.

[0008] In some examples, the DC switch also includes a first stationary contact and a second stationary contact, which are disposed within a receiving cavity. The incoming busbar and the first stationary contact are integrated into one structure, and the outgoing busbar and the second stationary contact are integrated into one structure.

[0009] By integrating the incoming busbar and the first stationary contact into a single structure, and integrating the outgoing busbar and the second stationary contact into a single structure, the internal electrical connection structure of the DC switch is effectively simplified, which is beneficial to improving the stability of the electrical connection. Furthermore, the simplification of the electrical connection structure helps to reduce the size of the DC switch itself, thereby reducing the space occupied in the switch cabinet, which facilitates installation and wiring operations.

[0010] In some examples, the incoming busbar includes a first terminal section, on which a first mounting part is provided, and a first mounting hole is provided on the second side wall, and the first mounting part is installed in the first mounting hole.

[0011] With the cooperation of the first assembly part and the first assembly hole, the incoming busbar can be positioned and installed on the second side wall, which is beneficial to improving the assembly and wiring stability of the incoming busbar. Moreover, the structure is simple and easy to assemble.

[0012] In some examples, the incoming busbar also includes a first connecting section that connects a first wiring section and a first stationary contact, and a second mounting hole is provided in the receiving cavity, with the first connecting section installed in the second mounting hole.

[0013] With the cooperation of the first connecting section and the second assembly hole, the part of the incoming busbar located in the receiving cavity can be positioned and installed, which further improves the assembly stability of the incoming busbar and is conducive to the stable wiring of the incoming busbar and the stable assembly of the first stationary contact in the receiving cavity.

[0014] In some examples, the outgoing busbar includes a second terminal section, on which a second assembly part is provided, and a third assembly hole is provided on the third side wall, and the second assembly part is installed in the third assembly hole.

[0015] With the cooperation of the second assembly part and the third assembly hole, the outgoing busbar can be positioned and installed on the third side wall, which is beneficial to improve the stability of the assembly and wiring of the outgoing busbar. Moreover, the structure is simple and easy to assemble.

[0016] In some examples, the outgoing busbar also includes a second connecting section, which connects to the second wiring section and the second stationary contact. A fourth mounting hole is provided in the receiving cavity, and the second connecting section is installed in the fourth mounting hole.

[0017] With the cooperation of the second connecting section and the fourth assembly hole, the part of the outgoing busbar located in the receiving cavity can be positioned and installed, which further improves the assembly stability of the outgoing busbar and is conducive to the stable wiring of the outgoing busbar and the stable assembly of the second stationary contact in the receiving cavity.

[0018] In some examples, the housing includes a first mounting plate and a second mounting plate, the first mounting plate being disposed on a third sidewall near the second sidewall, and the second mounting plate being disposed on a fourth sidewall near the third sidewall, the fourth sidewall being opposite to the second sidewall.

[0019] The first and second mounting plates are used to install the entire housing. The spacing between the first and second mounting plates allows for fixing the housing at at least two positions, which improves the assembly stability of the housing and enhances the stability of the wiring of the incoming and outgoing busbars.

[0020] In some examples, a first mounting foot and a second mounting foot are spaced apart on the first mounting plate, and a third mounting foot and a fourth mounting foot are spaced apart on the second mounting plate. The first mounting foot, the second mounting foot, the third mounting foot and the fourth mounting foot are all located on the side of the third sidewall that is away from the first sidewall.

[0021] The first mounting foot, second mounting foot, third mounting foot, and fourth mounting foot can simultaneously fix the housing at four points, further improving the assembly stability of the housing without affecting the separate wiring of the incoming and outgoing busbars.

[0022] In some examples, the housing includes at least one unit box, within which a moving contact, a first arc-extinguishing chamber, and a second arc-extinguishing chamber are disposed. A first stationary contact portion is located in the first arc-extinguishing chamber, and a second stationary contact portion is located in the second arc-extinguishing chamber. The moving contact is connected to an operating shaft and is capable of simultaneously energizing the first and second stationary contacts.

[0023] The moving contact, first arc-extinguishing chamber, second arc-extinguishing chamber, first stationary contact, and second stationary contact in the unit box work together to achieve the function of connecting and disconnecting the circuit. The aforementioned components are concentrated in the unit box, which has the characteristics of simple structure, compactness and small size, which is conducive to reducing the overall size of the DC switch.

[0024] In some examples, the housing also includes a rotating mechanism, with the operating shaft connected to the rotating mechanism, and two unit boxes are provided, which are arranged opposite each other on both sides of the rotating mechanism.

[0025] The rotation mechanism connected to the operating shaft can transmit the action of the input operating shaft to the two unit boxes, so that the two unit boxes can work together to control the on and off of the circuit, which helps to improve the breaking capacity of the DC switch. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a first view of the overall structure of the DC switch provided in an embodiment of this application.

[0028] Figure 2 This is a second view of the overall structure of the DC switch provided in an embodiment of this application.

[0029] Figure 3 This is a schematic diagram of the internal structure of the housing provided in an embodiment of this application.

[0030] Figure 4 This is a schematic diagram of the assembly structure of the incoming busbar and the outgoing busbar on the housing, provided in an embodiment of this application.

[0031] Figure 5 An exploded view of a DC switch provided in an embodiment of this application.

[0032] Explanation of reference numerals in the attached figures:

[0033] 100. DC switch; 1. Housing; 11. Receiving cavity; 111. Second mounting hole; 112. Fourth mounting hole; 12. First side wall; 13. Second side wall; 131. First mounting hole; 14. Third side wall; 141. Third mounting hole; 15. Fourth side wall; 16. First mounting plate; 161. First mounting foot; 162. Second mounting foot; 17. Second mounting plate; 171. Third mounting foot; 172. Fourth mounting foot; 18. Unit box; 181. Moving contact; 182. First arc-extinguishing chamber; 183. Second arc-extinguishing chamber; 2. Operating shaft; 3. Incoming busbar; 31. First wiring section; 311. First assembly part; 32. First connecting section; 4. Outgoing busbar; 41. Second wiring section; 411. Second assembly part; 42. Second connecting section; 5. First stationary contact; 6. Second stationary contact. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0036] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0037] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0038] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0039] DC switches are typically installed in switch cabinets and connected to the main circuit controlled by the switch cabinet via the input and output terminals. The on / off state of the main circuit can be controlled by operating the operating shaft on the DC switch.

[0040] However, in existing DC switches, the input and output terminals are located on opposite sides, while the wiring method in the switch cabinet is usually bottom wiring or other single-direction wiring. This requires the use of additional wires and laying them around the DC switch to achieve wiring on both sides of the DC switch. This will occupy more space in the switch cabinet and is not suitable for switch cabinets with small internal space.

[0041] Based on this, embodiments of this application provide a DC switch that can optimize the layout of the DC switch terminals and reduce the space occupied.

[0042] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0043] Please refer to Figure 1 and Figure 2 This embodiment provides a DC switch 100, including a housing 1, an operating shaft 2, an inlet busbar 3, and an outlet busbar 4. The housing 1 has a receiving cavity 11, and the operating shaft 2 is installed in the receiving cavity 11, with a portion of the operating shaft 2 passing through the first side wall 12 of the housing 1. The inlet busbar 3 is installed in the receiving cavity 11, with a portion of the inlet busbar 3 passing through the second side wall 13 of the housing 1. The outlet busbar 4 is installed in the receiving cavity 11, with a portion of the outlet busbar 4 passing through the third side wall 14 of the housing 1. The first side wall 12 is adjacent to the second side wall 13, and the third side wall 14 is adjacent to the second side wall 13 and opposite to the first side wall 12.

[0044] By setting the incoming busbar 3 and outgoing busbar 4 of the DC switch 100 on two adjacent side walls of the housing 1, the wiring method of the DC switch 100 is effectively simplified while ensuring that there is an electrical clearance between the incoming busbar 3 and the outgoing busbar 4. This facilitates the wiring of the DC switch 100 from the same direction and reduces the use and arrangement of conductors, thereby reducing space occupation.

[0045] In this embodiment, the housing 1 serves as the main load-bearing structure and has an internal cavity 11. Components such as the operating shaft 2, the inlet busbar 3, and the outlet busbar 4 are installed in the cavity 11 of the housing 1 and partially extend out of the surface of the housing 1. In this embodiment, the housing 1 is a regular hexahedron or a parallelepiped, and the first sidewall 12 is the front of the housing 1. The operating shaft 2 is located on the first sidewall 12 to facilitate operation of the DC switch 100 from the front.

[0046] Reference Figure 2 The second side wall 13 is the bottom surface of the housing 1. The incoming busbar 3 is set on the second side wall 13. On the one hand, it can be kept away from the operating shaft 2 to avoid contact with the incoming busbar 3 during operation, which may cause short circuit or electric shock. On the other hand, it is convenient to connect the wires from the bottom surface of the DC switch 100. It can be used with switch cabinets with the same wiring direction, reducing the use of wires and thus reducing space occupation. Furthermore, there is no need for wiring or other operations, making the wiring operation simpler.

[0047] The third side wall 14 is the back of the housing 1. The third side wall 14 is opposite to the first side wall 12, and the third side wall 14 is adjacent to the second side wall 13, just like the first side wall 12. The outgoing busbar 4 is arranged on the third side wall 14. This arrangement not only satisfies the requirement of maintaining an electrical clearance between the outgoing busbar 4 and the incoming busbar 3, but also allows the outgoing busbar 4 and the incoming busbar 3 to be wired from the same direction, effectively simplifying the wiring method and operation of the DC switch 100. Moreover, this arrangement reduces the space occupied by additional wires and also reduces the overall space occupied by the DC switch 100, making it widely applicable.

[0048] In an optional embodiment, the positions of the incoming busbar 3 and the outgoing busbar 4 can be interchanged, achieving the same technical effect as the aforementioned embodiment, and will not be repeated here.

[0049] In addition, the outgoing busbar 4 can also be set on the side wall of the housing 1, which is the wall adjacent to the first side wall 12 and the second side wall 13. This arrangement also has the same technical effect as the aforementioned embodiment, and will not be described again here.

[0050] In some examples, please refer to Figure 3 and Figure 4 The DC switch 100 also includes a first stationary contact 5 and a second stationary contact 6. The first stationary contact 5 and the second stationary contact 6 are disposed in the receiving cavity 11. The incoming busbar 3 and the first stationary contact 5 are configured as an integral structure, and the outgoing busbar 4 and the second stationary contact 6 are configured as an integral structure.

[0051] By setting the incoming busbar 3 and the first stationary contact 5 as an integrated structure, and setting the outgoing busbar 4 and the second stationary contact 6 as an integrated structure, the internal electrical connection structure of the DC switch 100 is effectively simplified, which is conducive to improving the stability of the electrical connection. Furthermore, the simplification of the electrical connection structure helps to reduce the size of the DC switch 100 itself, thereby reducing the space occupied in the switch cabinet, so as to facilitate installation and wiring operations.

[0052] Specifically, the first stationary contact 5 is installed in the receiving cavity 11 of the housing 1, and the part of the incoming busbar 3 located in the receiving cavity 11 is connected to the first stationary contact 5 as a whole. This makes the electrical connection between the incoming busbar 3 and the first stationary contact 5 stable, and the structure is simple. It occupies less space in the receiving cavity 11, which helps to reduce the volume of the housing 1. It is convenient for wiring and also convenient for the assembly of the housing 1.

[0053] like Figure 3 and Figure 4 As shown, in some examples, the incoming busbar 3 includes a first wiring segment 31, on which a first mounting part 311 is provided, and on the second sidewall 13 a first mounting hole 131 is provided, and the first mounting part 311 is installed in the first mounting hole 131.

[0054] With the cooperation of the first assembly part 311 and the first assembly hole 131, the incoming busbar 3 can be positioned and installed on the second side wall 13, which is beneficial to improving the assembly and wiring stability of the incoming busbar 3, and the structure is simple and easy to assemble.

[0055] The first connecting section 31 of the incoming busbar 3 extends out of the second sidewall 13 and is used to connect external wires. The first assembly part 311 is the part of the first connecting section 31 near the second sidewall 13. The incoming busbar 3 passes through the first assembly part 311 on the second sidewall 13, and the shape and structure of the first assembly part 311 are the same as the shape and structure of the first assembly hole 131. That is, the first assembly part 311 can be stably assembled in the first assembly hole 131, thereby realizing the stable assembly of the incoming busbar 3 on the second sidewall 13.

[0056] Specifically, the incoming busbar 3 is configured as a plate-shaped structure, and the first assembly hole 131 is a rectangular hole opened on the second side wall 13. The size of the first assembly part 311 is the same as the size of the rectangular hole, so that the first assembly part 311 can be inserted into the first assembly hole 131 and locked in the first assembly hole 131.

[0057] Reference Figure 4 In some examples, the incoming busbar 3 also includes a first connecting section 32, which connects the first wiring section 31 and the first stationary contact 5. A second mounting hole 111 is provided in the receiving cavity 11, and the first connecting section 32 is installed in the second mounting hole 111.

[0058] With the cooperation of the first connecting section 32 and the second assembly hole 111, the part of the incoming busbar 3 located in the receiving cavity 11 can be positioned and installed, which further improves the assembly stability of the incoming busbar 3 and is conducive to the stable wiring of the incoming busbar 3 and the stable assembly of the first stationary contact 5 in the receiving cavity 11.

[0059] The first connecting segment 32 connects the first wiring segment 31 and the first stationary contact 5. The second assembly hole 111 is disposed in the receiving cavity 11. The shape and structure of the first connecting segment 32 are the same as those of the second assembly hole 111, meaning that the first connecting segment 32 can be stably assembled in the second assembly hole 111. The second assembly hole 111 is also a rectangular hole, communicating with the first assembly hole 131. The size of the first connecting segment 32 is the same as the size of this rectangular hole, allowing the first connecting segment 32 to be inserted into and engaged within the second assembly hole 111.

[0060] Reference Figure 3 and Figure 4 In some examples, the outgoing busbar 4 includes a second wiring section 41, on which a second mounting part 411 is provided, and a third mounting hole 141 is provided on the third side wall 14, and the second mounting part 411 is installed in the third mounting hole 141.

[0061] With the cooperation of the second assembly part 411 and the third assembly hole 141, the outgoing busbar 4 can be positioned and installed on the third side wall 14, which is beneficial to improving the assembly and wiring stability of the outgoing busbar 4, and the structure is simple and easy to assemble.

[0062] The second terminal section 41 of the outgoing busbar 4 is the part that extends out of the third side wall 14, and the second terminal section 41 is also used to connect external wires. The second assembly part 411 is the part of the second terminal section 41 that is close to the third side wall 14. The outgoing busbar 4 passes through the second assembly part 411 and is mounted on the third side wall 14. The shape and structure of the second assembly part 411 are the same as the shape and structure of the second assembly hole 111. That is, the second assembly part 411 can be stably assembled in the third assembly hole 141, thereby achieving stable assembly of the outgoing busbar 4 on the third side wall 14.

[0063] Similar to the incoming busbar 3, the outgoing busbar 4 is also configured as a plate structure. The third assembly hole 141 is a rectangular hole opened on the third side wall 14. The size of the second assembly part 411 is the same as the size of the rectangular hole, so that the second assembly part 411 can be inserted into the third assembly hole 141 and locked in the third assembly hole 141.

[0064] In some examples, such as Figure 4 As shown, the outgoing busbar 4 also includes a second connecting section 42, which connects the second wiring section 41 and the second stationary contact 6. A fourth assembly hole 112 is provided in the receiving cavity 11, and the second connecting section 42 is installed in the fourth assembly hole 112.

[0065] With the cooperation of the second connecting section 42 and the fourth mounting hole 112, the part of the outgoing busbar 4 located in the receiving cavity 11 can be positioned and installed, which further improves the assembly stability of the outgoing busbar 4, and is conducive to the stable wiring of the outgoing busbar 4 and the stable assembly of the second stationary contact 6 in the receiving cavity 11.

[0066] The second connecting segment 42 connects to the second wiring segment 41 and the second stationary contact 6. The fourth assembly hole 112 is disposed in the receiving cavity 11. The shape and structure of the second connecting segment 42 are the same as those of the fourth assembly hole 112, meaning that the second connecting segment 42 can be stably assembled in the fourth assembly hole 112. The fourth assembly hole 112 is also a rectangular hole, communicating with the third assembly hole 141. The size of the second connecting segment 42 is the same as the size of this rectangular hole, allowing the second connecting segment 42 to be inserted into and held in the fourth assembly hole 112.

[0067] In some examples, refer to Figure 3The housing 1 includes a first mounting plate 16 and a second mounting plate 17. The first mounting plate 16 is disposed on the side of the third side wall 14 near the second side wall 13, and the second mounting plate 17 is disposed on the side of the fourth side wall 15 near the third side wall 14. The fourth side wall 15 is opposite to the second side wall 13.

[0068] The first mounting plate 16 and the second mounting plate 17 are used to realize the overall installation of the housing 1. The spacing between the first mounting plate 16 and the second mounting plate 17 can fix the housing 1 from at least two positions, which improves the assembly stability of the housing 1 and helps to improve the stability of the wiring of the incoming busbar 3 and the outgoing busbar 4 respectively.

[0069] The first mounting plate 16 is disposed on the side of the third side wall 14 near the second side wall 13, specifically located on the third side wall 14 near the connection point with the second side wall 13. The second mounting plate 17 is disposed on the side of the fourth side wall 15 near the third side wall 14, specifically located on the fourth side wall 15 near the connection point with the third side wall 14.

[0070] The first mounting plate 16 and the second mounting plate 17 are positioned on or near the third side wall 14 to use the back of the housing 1 as the assembly surface. For example, the back of the housing 1 is assembled into the switch cabinet. In this way, while assembling, the outgoing busbar 4 is positioned between the assembly surface of the housing 1 and the switch cabinet, which helps to reduce the space occupied by the DC switch 100.

[0071] In some examples, refer to Figure 3 The first mounting plate 16 is provided with a first mounting foot 161 and a second mounting foot 162 at intervals, and the second mounting plate 17 is provided with a third mounting foot 171 and a fourth mounting foot 172 at intervals. The first mounting foot 161, the second mounting foot 162, the third mounting foot 171 and the fourth mounting foot 172 are all located on the side of the third sidewall 14 away from the first sidewall 12.

[0072] The first mounting foot 161, the second mounting foot 162, the third mounting foot 171, and the fourth mounting foot 172 can simultaneously fix the housing 1 at four points, further improving the assembly stability of the housing 1 without affecting the separate wiring of the incoming busbar 3 and the outgoing busbar 4.

[0073] The first mounting foot 161 and the second mounting foot 162 are spaced apart at both ends of the first mounting plate 16, and the mounting directions of the first mounting foot 161 and the second mounting foot 162 are the same as the orientation of the third sidewall 14, which facilitates assembly by using the third sidewall 14 as the assembly surface. Similarly, the third mounting foot 171 and the fourth mounting foot 172 are spaced apart at both ends of the second mounting plate 17, and the mounting directions of the third mounting foot 171 and the fourth mounting foot 172 are also the same as the orientation of the third sidewall 14. The first mounting foot 161, the second mounting foot 162, the third mounting foot 171, and the fourth mounting foot 172 cooperate with each other to effectively improve the assembly stability of the housing 1.

[0074] In some examples, refer to Figure 5 The housing 1 includes at least one unit box 18, in which a moving contact 181, a first arc-extinguishing chamber 182, and a second arc-extinguishing chamber 183 are disposed. A first stationary contact 5 is partially located in the first arc-extinguishing chamber 182, and a second stationary contact 6 is partially located in the second arc-extinguishing chamber 183. The moving contact 181 is connected to the operating shaft 2 and can simultaneously conduct the first stationary contact 5 and the second stationary contact 6.

[0075] The moving contact 181, the first arc-extinguishing chamber 182, the second arc-extinguishing chamber 183, the first stationary contact 5, and the second stationary contact 6 in the unit box 18 work together to achieve the function of connecting and disconnecting the circuit. The aforementioned components are concentrated in the unit box 18, which has the characteristics of simple structure, compactness and small size, which is conducive to reducing the overall size of the DC switch 100.

[0076] The first stationary contact 5 and the second stationary contact 6 are respectively located on different sides of the unit box 18 along with the incoming busbar 3 and the outgoing busbar 4. The moving contact 181 can simultaneously cooperate with the first stationary contact 5 and the second stationary contact 6 to realize the circuit's connection and disconnection. The first arc-extinguishing chamber 182 corresponds to the first stationary contact 5, and the second arc-extinguishing chamber 183 corresponds to the second stationary contact 6, in order to extinguish the generated arc and reduce the risk of damage caused by arc propagation.

[0077] In some examples, the housing 1 also includes a rotating mechanism, the operating shaft 2 is connected to the rotating mechanism, and two unit boxes 18 are provided, which are arranged opposite each other on both sides of the rotating mechanism.

[0078] The rotation mechanism connected to the operating shaft 2 can transmit the action of the input operating shaft 2 to the two unit boxes 18, so that the two unit boxes 18 can work together to control the on and off of the circuit, which helps to improve the breaking capacity of the DC switch 100.

[0079] In an alternative embodiment, the unit box 18 can also be set to two or more, which can also enhance the breaking capability of the control circuit and is suitable for switch cabinets with limited space and requiring strong breaking capability.

[0080] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A direct current switch, characterized by The direct current switch comprises a shell, an operating shaft, an incoming busbar and an outgoing busbar, the shell has a receiving cavity, the operating shaft is installed in the receiving cavity and part of the operating shaft penetrates through a first side wall of the shell, the incoming busbar is installed in the receiving cavity and part of the incoming busbar penetrates through a second side wall of the shell, and the outgoing busbar is installed in the receiving cavity and part of the outgoing busbar penetrates through a third side wall of the shell. The first side wall is adjacent to the second side wall, and the third side wall is adjacent to the second side wall and opposite to the first side wall.

2. The direct current switch according to claim 1, characterized in that The direct current switch further comprises a first static contact and a second static contact, the first static contact and the second static contact are arranged in the receiving cavity, the incoming busbar is arranged in an integrated structure with the first static contact, and the outgoing busbar is arranged in an integrated structure with the second static contact.

3. The direct current switch according to claim 2, characterized in that The incoming busbar comprises a first connecting segment, the first connecting segment is connected with the first connecting segment and the first static contact, a second assembly hole is arranged in the receiving cavity, and the first connecting segment is installed in the second assembly hole.

4. The direct current switch according to claim 3, characterized in that The outgoing busbar comprises a second connecting segment, the second connecting segment is connected with the second connecting segment and the second static contact, a fourth assembly hole is arranged in the receiving cavity, and the second connecting segment is installed in the fourth assembly hole.

5. The direct current switch of claim 2, wherein, The outgoing busbar comprises a second connecting segment, the second connecting segment is connected with the second connecting segment and the second static contact, a fourth assembly hole is arranged in the receiving cavity, and the second connecting segment is installed in the fourth assembly hole.

6. The direct current switch according to claim 5, characterized in that The shell comprises a first mounting plate and a second mounting plate, the first mounting plate is arranged on one side of the third side wall close to the second side wall, the second mounting plate is arranged on one side of a fourth side wall close to the third side wall, and the fourth side wall is opposite to the second side wall.

7. The direct current switch according to any one of claims 1 to 6, characterized in that The first mounting plate is provided with a first mounting leg and a second mounting leg at intervals, the second mounting plate is provided with a third mounting leg and a fourth mounting leg at intervals, and the first mounting leg, the second mounting leg, the third mounting leg and the fourth mounting leg are located on one side of the third side wall away from the first side wall.

8. The direct current switch according to claim 7, characterized in that The shell comprises at least one unit box, the unit box is provided with a moving contact, a first arc extinguishing chamber and a second arc extinguishing chamber, the first static contact is partially located in the first arc extinguishing chamber, the second static contact is partially located in the second arc extinguishing chamber, and the moving contact is connected with the operating shaft and can simultaneously conduct the first static contact and the second static contact.

9. The direct current switch of claim 2, wherein, The shell further comprises a rotating mechanism, the operating shaft is connected with the rotating mechanism, and the shell is provided with two unit boxes, and the two unit boxes are oppositely arranged on two sides of the rotating mechanism.

10. The direct current switch according to claim 9, characterized in that ​

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