Switch unit, rotary switch and power supply system

Abstract

The invention provides a switch unit, a rotary switch and a power supply system, and relates to the technical field of low-voltage apparatuses. The switch unit comprises a shell and two groups of static contact assemblies and moving contact assemblies which are arranged in the shell, each static contact assembly comprises a static contact, each moving contact assembly comprises a moving contact, each static contact comprises a contact part and a wiring part, the two contact parts are matched with the moving contact respectively, the contact parts extend along a straight line in a preset direction, and the wiring parts are matched with the wiring parts. The two contact parts are arranged oppositely in a preset direction, and the preset direction is perpendicular to the rotation axis of the moving contact assembly; the shell is provided with a first side surface and a second side surface which are opposite to each other, the first side surface and the second side surface are respectively provided with wiring ports, and the two wiring ports respectively correspond to the two wiring parts; and when the at least two shells are stacked, the wiring ports on the two adjacent layers of shells are oppositely arranged in the first direction. The switch unit is convenient for a customer to position and wire, and the production cost can be reduced.

Description

Technical Field

[0001] This application relates to the field of low-voltage electrical technology, and more specifically, to a switching unit, a rotary switch, and a power supply system. Background Technology

[0002] A typical rotary switch is usually composed of several stacked switching units. Each switching unit includes a unit housing, and each unit housing houses a corresponding moving contact assembly and a stationary contact assembly. A shaft is provided between each unit housing to drive the moving contact assemblies to rotate synchronously, thereby enabling the moving and stationary contact assemblies to form a contact connection and disconnect. The portion of the stationary contact assembly furthest from the moving contact assembly is the wiring section. The unit housing has a corresponding wiring port for this wiring section, through which an external conductor can pass to electrically connect with the connection part of the stationary contact assembly.

[0003] In current rotary switches, the wiring ports on adjacent unit housings are staggered in the stacking direction to increase the creepage distance of the stationary contact assembly. However, this staggered arrangement makes it inconvenient for customers to locate and wire the switches, and also results in different structures for adjacent unit housings, leading to higher production costs. Summary of the Invention

[0004] The purpose of this application is to address the shortcomings of the prior art by providing a switching unit, rotary switch, and power supply system that facilitates customer positioning and wiring, and reduces production costs.

[0005] To achieve the above objectives, the technical solutions adopted in the embodiments of this application are as follows:

[0006] One aspect of this application provides a switching unit, including a housing, two sets of stationary contact assemblies and a moving contact assembly disposed within the housing, each stationary contact assembly including a stationary contact, and each moving contact assembly including a moving contact. Each stationary contact includes a contact portion and a wiring portion. The two contact portions respectively cooperate with the moving contact. The contact portions extend in a straight line along a predetermined direction, and the two contact portions are positioned opposite each other in the predetermined direction, which is perpendicular to the rotation axis of the moving contact assembly. The housing has opposing first and second side surfaces, each with a wiring port. The two wiring ports correspond to the two wiring portions. When at least two housings are stacked, the wiring ports on adjacent housing layers are positioned opposite each other in a first direction, which is perpendicular to the predetermined direction.

[0007] Optionally, the housing has a third side located between the first side and the second side, and the third side is provided with two wiring channels, which correspond to the wiring portions of the two stationary contacts respectively. The wiring channels are used for the wiring terminals of the wiring portions to pass through.

[0008] Optionally, the housing is provided with a first receiving groove, the moving contact assembly is located in the first receiving groove, and the first receiving groove is provided with two first baffles; when the moving contact is in the closed position, the orthographic projection of the bottom of the first receiving groove and the orthographic projection of the bottom of the first receiving groove when the moving contact is in the open position and the edge of the bottom of the first receiving groove enclose two acute angle regions, and the two first baffles are respectively located in the two acute angle regions.

[0009] Optionally, the side of the wiring port is provided with a second baffle and a third baffle. When at least two housings are stacked, the opening of the second baffle on one housing is blocked by the third baffle on the other housing to form an annular baffle around the wiring port.

[0010] Optionally, two fourth baffles are provided on the first and second sides of the housing, respectively. The two fourth baffles are located on opposite sides of the second baffle, and the fourth baffles are spaced apart from the second baffle.

[0011] Optionally, the two sets of stationary contact assemblies are located in the center of the housing.

[0012] Optionally, the moving contact assembly also includes a contact support, with the moving contact mounted on the contact support. The two ends of the contact support respectively form semi-closed opening slots, and the end of the moving contact that mates with the stationary contact is located within the opening slot.

[0013] Optionally, the outer periphery of the contact support is provided with two opposing fifth baffles. When the switch unit is in the open position, the line connecting the end of the fifth baffle away from the contact support, the stationary contact, and the moving contact forms a triangle.

[0014] In one aspect of this application, a rotary switch is provided, including a plurality of switch units and an operating mechanism as described above, stacked along a first direction. The rotating shaft of the operating mechanism is connected to the moving contact assembly of the switch unit for driving the moving contact assembly to rotate to open or close the switch with the stationary contact assembly.

[0015] Optionally, the projections of two sets of stationary contact assemblies in two adjacent switching units overlap in the first direction to form a first projection or substantially overlap to form a second projection.

[0016] Optionally, the operating mechanism includes a mechanism base and a rotating shaft disposed within the mechanism base. The rotating shaft is used to connect with the moving contact assembly to drive the moving contact assembly to rotate. A limit structure is provided between the mechanism base and the rotating shaft so that the rotation angle of the moving contact assembly is an obtuse angle.

[0017] Optionally, the limiting structure includes two first limiting protrusions disposed on the base of the mechanism and two second limiting protrusions disposed on the rotating shaft. The first limiting protrusions have a first sidewall and a second sidewall, and the second limiting protrusions have a third sidewall and a fourth sidewall. When any second limiting protrusion rotates from the position where its fourth sidewall abuts against the first sidewall of the corresponding first limiting protrusion to the position where its third sidewall abuts against the second sidewall of another first limiting protrusion, the rotation angle is an obtuse angle.

[0018] Optionally, the operating mechanism also includes a handle, a mechanism cover, and a lever arranged in sequence. One end of the lever passes through the mechanism cover and is connected to the handle; the other end of the lever is linked to the rotating shaft; the mechanism cover is provided with a first limit platform and a second limit platform, which are used to limit the rotating shaft in the closed and open positions, respectively, and an obtuse angle is provided between the first limit platform and the second limit platform.

[0019] Optionally, the lever is further provided with a first locking protrusion and a second locking protrusion, and the upper cover of the mechanism is provided with a third limiting platform. The third limiting platform forms a fifth side wall and a sixth side wall facing away from each other, so as to abut against the side wall of the first locking protrusion and the side wall of the second locking protrusion respectively. When the side wall of the first locking protrusion abuts against the fifth side wall, the rotation range between the side wall of the second locking protrusion and the sixth side wall is an obtuse angle. When the side wall of the second locking protrusion abuts against the sixth side wall, the rotation range between the side wall of the first locking protrusion and the fifth side wall is an obtuse angle.

[0020] Optionally, the operating mechanism includes a drive assembly, a rotating shaft drivenly connected to the drive assembly, and a mechanism cover capable of locking or unlocking the rotating shaft; the operating mechanism has a first working position and a second working position distributed circumferentially thereon; when the operating mechanism is in the first working position, the mechanism cover locks the rotating shaft; the drive assembly can act on the rotating shaft to unlock the rotating shaft relative to the mechanism cover when rotating in the forward or reverse direction, and drive the rotating shaft to rotate so that the rotating shaft switches to the second working position.

[0021] Optionally, the upper cover of the mechanism has a first limiting platform on the side near the rotating shaft, the rotating shaft has a cantilever beam on the side near the upper cover of the mechanism, and the drive assembly has a pressing part; in the first working position and the second working position, the cantilever beam and the first limiting platform cooperate to lock the upper cover of the mechanism and the rotating shaft circumferentially; when the operating mechanism switches between the first working position and the second working position, the drive assembly is driven to rotate in the forward or reverse direction, and the pressing part can act on the cantilever beam to unlock the rotating shaft from the upper cover of the mechanism circumferentially.

[0022] Optionally, both the first working position and the second working position include an even number, the number of the first working position and the second working position are the same, and the first working position and the second working position are alternately arranged.

[0023] Optionally, the moving contact assemblies of any two adjacent switching units may have their orthogonal projections along the first direction coincide or substantially coincide.

[0024] Optionally, the moving contact assembly of at least one switching unit is arranged intersecting the moving contact assemblies of other switching units in the orthographic projection along the first direction.

[0025] In another aspect of the embodiments of this application, a power supply system is provided, including a control unit, a power supply, a rotary switch as described above, and a power conversion switch, wherein the rotary switch is electrically connected between the power supply and the power conversion switch, and the control unit is used to send relevant signals of the power supply or the power conversion switch to the rotary switch.

[0026] Optionally, the rotary switch has at least one layer of switching units connected to the first circuit, while other layers of switching units are connected to other circuits that are not the first circuit.

[0027] The beneficial effects of this application include:

[0028] This application provides a switch unit, including a housing, two sets of stationary contact assemblies and a moving contact assembly disposed within the housing. Each stationary contact assembly includes a stationary contact, and each moving contact assembly includes a moving contact. Each stationary contact includes a contact portion and a wiring portion. Two contact portions respectively mate with the moving contact. The contact portions extend linearly in a predetermined direction and are positioned opposite each other in the predetermined direction, which is perpendicular to the rotation axis of the moving contact assembly. The housing has opposing first and second side surfaces, each with a wiring port. Two wiring ports correspond to two wiring portions. When at least two housings are stacked, the wiring ports on adjacent housing layers are positioned opposite each other in the first direction. In this switch unit, the contact portions of the two stationary contacts within the housing extend along a predetermined direction and are positioned opposite each other in the predetermined direction. After the housings are stacked, the wiring ports on adjacent housing layers are positioned opposite each other in the first direction, which is perpendicular to the predetermined direction. This facilitates customer positioning and wiring, and also reduces production costs. Attached Figure Description

[0029] 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.

[0030] Figure 1 This is one of the structural schematic diagrams of the switching unit provided in the embodiments of this application;

[0031] Figure 2a One of the schematic diagrams of a stack of switch units provided in an embodiment of this application;

[0032] Figure 2b A second schematic diagram of the stacking of switch units provided in an embodiment of this application;

[0033] Figure 3 This is a second schematic diagram of the structure of the switching unit provided in the embodiments of this application;

[0034] Figure 4 This is the third schematic diagram of the structure of the switching unit provided in the embodiments of this application;

[0035] Figure 5 This is a schematic diagram of the moving contact assembly structure in the switching unit provided in the embodiments of this application;

[0036] Figure 6 One of the partial structural schematic diagrams of the rotary switch provided in the embodiments of this application;

[0037] Figure 7 This is one of the structural schematic diagrams of the rotary switch provided in the embodiments of this application;

[0038] Figure 8 This is one of the exploded structural diagrams of the rotary switch provided in the embodiments of this application;

[0039] Figure 9 The third schematic diagram of the stacking of switch units provided in the embodiments of this application;

[0040] Figure 10 Fourth schematic diagram of the stacking of switch units provided in the embodiments of this application;

[0041] Figure 11 This is one of the schematic diagrams showing the cooperation between the mechanism base and the rotating shaft of the operating mechanism provided in the embodiments of this application;

[0042] Figure 12 This is a schematic diagram of the base structure of the operating mechanism provided in the embodiments of this application;

[0043] Figure 13 A second schematic diagram showing the cooperation between the mechanism base and the rotating shaft of the operating mechanism provided in the embodiments of this application;

[0044] Figure 14 This is the second exploded structural diagram of the rotary switch provided in the embodiments of this application;

[0045] Figure 15 A schematic diagram of the lever structure of the operating mechanism provided in the embodiments of this application;

[0046] Figure 16 This is one of the schematic diagrams of the rotating shaft structure of the operating mechanism provided in the embodiments of this application;

[0047] Figure 17 This is the second schematic diagram of the rotating shaft structure of the operating mechanism provided in the embodiments of this application;

[0048] Figure 18A schematic diagram of the mechanism cover and lever engagement of the operating mechanism provided in this application embodiment;

[0049] Figure 19 This is a second schematic diagram of the structure of the rotary switch provided in the embodiments of this application;

[0050] Figure 20 This is the third schematic diagram of the structure of the rotary switch provided in the embodiments of this application;

[0051] Figure 21 This is the fourth schematic diagram of the rotary switch provided in the embodiments of this application;

[0052] Figure 22 This is a schematic diagram of the drive assembly and rotating shaft provided in the embodiments of this application;

[0053] Figure 23 This is one of the structural schematic diagrams of the mechanism cover provided in the embodiments of this application;

[0054] Figure 24 This is the second schematic diagram of the structure of the mechanism cover provided in the embodiments of this application;

[0055] Figure 25 A schematic diagram of the lever structure provided in the embodiments of this application;

[0056] Figure 26 This is a schematic diagram of the structure of the rotating shaft and elastic element provided in the embodiments of this application;

[0057] Figure 27 This is one of the structural schematic diagrams of the mechanism base provided in the embodiments of this application;

[0058] Figure 28 This is the second structural schematic diagram of the mechanism base provided in the embodiments of this application;

[0059] Figure 29 This is one of the structural schematic diagrams of the drive assembly, rotating shaft, and mechanism base provided in the embodiments of this application;

[0060] Figure 30 This is a second schematic diagram of the drive assembly, rotating shaft, and mechanism base provided in the embodiments of this application;

[0061] Figure 31 This is one of the structural schematic diagrams of the rotating shaft provided in the embodiments of this application;

[0062] Figure 32 This is a second schematic diagram of the structure of the rotating shaft provided in the embodiments of this application;

[0063] Figure 33 This is the fourth schematic diagram of the structure of the switching unit provided in the embodiments of this application;

[0064] Figure 34 Fifth schematic diagram of the structure of the switching unit provided in the embodiments of this application;

[0065] Figure 35 This is the sixth schematic diagram of the structure of the switching unit provided in the embodiments of this application;

[0066] Figure 36 The seventh schematic diagram of the structure of the switching unit provided in the embodiments of this application;

[0067] Figure 37 This is a schematic diagram of the power supply system provided in an embodiment of this application.

[0068] Icons: 100-Rotary switch; 10-Operating mechanism; 10A-Drive assembly; 11-Handle; 12-Mechanism cover; 121-First limiting platform; 122-Second limiting platform; 123-Third limiting platform; 123a-Fifth side wall; 123b-Sixth side wall; 124-Receiving groove; 125-Through groove; 13-Lever; 13A-First body; 131-Bending part; 132-First latching protrusion; 132a-Side wall; 133-Second latching protrusion; 133a-Side wall; 134-Crimping part; 135-Rotating shaft; 14-Rotating shaft; 140- Central shaft; 141-Cantilever beam; 141A-First cantilever beam; 141B-Second cantilever beam; 142-Opening; 143-Connecting protrusion; 143a-Second limiting protrusion; 143a1-Third sidewall; 143a2-Fourth sidewall; 144-Protrusion; 145-Matching hole; 15-Mechanism base; 150-Accommodating groove; 151-Through hole; 152-First limiting protrusion; 152a-First sidewall; 152b-Second sidewall; 153-Accommodating cavity; 16-Elastic element; 20-Switch unit; 20a-Housing; 201a-First side surface; 20 1b - Second side; 201c - Third side; 201d - Fourth side; 202 - Wiring port; 203 - Wiring channel; 204a - First receiving groove; 204b - Second receiving groove; 204c - Support area; 205 - First baffle; 206 - Acute angle area; 207a - Second baffle; 207b - Third baffle; 207c - Fourth baffle; 208a - Hook; 208b - Slot; 208c - Welding electrode; 209a - Gas passage; 209b - Block; 21 - Moving contact assembly; 210 - Contact support; 2101 - Mating Structure; 211-Moving contact; 212-Spring; 213-Fifth baffle; 214-First rotating protrusion; 215-Second rotating protrusion; 216-Opening slot; 22-Stationary contact assembly; 221-Stationary contact; 2211-Contact part; 2212-Wiring part; 23-Terminal; 31-Power supply; 32-Power conversion switch; 33-Control unit; a-Rotation angle; b-Preset direction; c-First direction; d-Width; t-Gap; A-Forward; B-Reverse; P-First projection; P0-Second projection; P2-Third projection; P20-Fourth projection. Detailed Implementation

[0069] 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.

[0070] 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. It should be noted that, unless otherwise specified, the various features in the embodiments of this application can be combined with each other, and the combined embodiments are still within the protection scope of this application.

[0071] 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.

[0072] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "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 of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0073] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" 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 mechanical connection or an electrical 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 based on the specific circumstances.

[0074] In current rotary switches, the wiring ports on adjacent unit housings are staggered in the stacking direction to increase the creepage distance of the stationary contact assembly. However, this staggered arrangement makes it inconvenient for customers to locate and wire the switches, and also results in different structures for adjacent unit housings, leading to higher production costs.

[0075] To solve the above-mentioned technical problems, one aspect of the embodiments of this application refers to... Figure 1 , Figure 2a and Figure 2b A switching unit 20 is provided, including a housing 20a, two sets of stationary contact assemblies 22 and a moving contact assembly 21 disposed within the housing 20a. The stationary contact assembly 22 includes a stationary contact 221, and the moving contact assembly 21 includes a moving contact 211. When driven, the moving contact assembly 21 reciprocates within the housing 20a, so that both ends of the moving contact 211 simultaneously contact the two stationary contacts 221 to conduct or separate and disconnect.

[0076] The stationary contact 221 includes a contact portion 2211 and a wiring portion 2212. The contact portions 2211 on the two stationary contacts 221 respectively mate with both ends of the moving contact 211, and the wiring portion 2212 is used for electrical connection with an external conductor. A predetermined direction b is defined on the housing 20a, which is perpendicular to the rotation axis of the moving contact assembly 21, preferably along the length of the housing 20a. The contact portions 2211 extend linearly along the predetermined direction b, and the contact portions 2211 of the two stationary contacts 221 are positioned opposite each other along the predetermined direction b.

[0077] The housing 20a has a first side 201a and a second side 201b, each with a wiring port 202. The wiring ports 202 communicate with the interior of the housing 20a, and each wiring port 202 corresponds to a wiring portion 2212 of a stationary contact 221. An external conductor passes through the wiring port 202 and extends into the interior of the housing 20a, electrically connecting to the wiring portion 2212 of the stationary contact 221. When at least two housings 20a are stacked, the wiring ports 202 on adjacent housings 20a are directly opposite each other in the first direction c (i.e., the stacking direction).

[0078] It should be noted that the aforementioned alignment setting includes two situations: one is complete alignment, and the other is that most areas are aligned, with only a small portion slightly offset. This slight offset in a small portion is usually caused by manufacturing errors. For example... Figure 1 As shown by the dashed line in the image, Figure 1 The contact portions 2211 of the two stationary contacts 221 shown are positioned directly opposite each other in the preset direction b, but a small portion is slightly offset. For example... Figure 2b As shown by the dashed line in the image, Figure 2b The wiring port 202 shown is perfectly aligned.

[0079] In the aforementioned switch unit 20, the contact portions 2211 of the two stationary contacts 221 inside the housing 20a extend along a preset direction and are positioned opposite each other in that preset direction. After the housings 20a are stacked, the wiring ports 202 on adjacent layers of housings 20a are positioned opposite each other in the first direction c. This facilitates customer positioning and wiring, and also reduces production costs.

[0080] Optionally, two opposite wiring ports 202 on the same housing 20a are arranged facing each other along a preset direction b, thereby making the structure of housing 20a more symmetrical and further facilitating user positioning and wiring.

[0081] Optionally, the two sets of stationary contact assemblies 22 are located in the center of the housing 20a.

[0082] Optionally, the housing 20a has a third side 201c located between the first side 201a and the second side 201b. The third side 201c has two wiring channels 203 that communicate with the interior of the housing 20a. The two wiring channels 203 correspond to the wiring portions 2212 of the two stationary contacts 221, and are used for the passage of the terminals 23 connecting the wiring portions 2212.

[0083] During wiring, the external conductor extends from the wiring port 202 into the side of the wiring part 2212 of the stationary contact 221 inside the housing 20a, and the wiring terminal 23 extends from the wiring channel 203 into the housing 20a to fix the external conductor to the wiring part 2212.

[0084] Optionally, the two wiring channels 203 are symmetrically distributed along a preset direction b. That is, the two wiring channels 203 on the same housing 20a are distributed at intervals along a straight line parallel to the preset direction b, and the distance between one wiring channel 203 and the first side 201a is equal to the distance between the other wiring channel 203 and the second side 201b.

[0085] Alternatively, please refer to Figure 3 The housing 20a is provided with a first receiving groove 204a, the moving contact assembly 21 is located in the first receiving groove 204a, and the first receiving groove 204a is provided with two first baffles 205. One end of the first baffle 205 is connected to the side wall of the first receiving groove 204a, and the other end extends into the interior of the first receiving groove 204a.

[0086] The moving contact 211 has a closed position within the first receiving groove 204a. Figure 3 (solid line position) and open position ( Figure 3 (The virtual position in the middle). When the moving contact 211 is in the closed position, the orthographic projection of the bottom of the first receiving groove 204a and the orthographic projection of the bottom of the first receiving groove 204a when the moving contact 211 is in the open position, and the edge of the bottom of the first receiving groove 204a enclose two acute angle regions 206. The included angle α of the acute angle regions 206 is less than 90°. The two first baffles 205 are located in the two acute angle regions 206 respectively.

[0087] When the opening angle of the moving contact 211 is obtuse, the aforementioned acute-angle region 206 is formed within the housing 20a. At this time, as the moving contact 211 moves towards the open position, the moving contact point at one end of the moving contact 211 gradually moves away from the contact portion of its mating stationary contact 221, but becomes too close to the contact portion 2211 of the other stationary contact 221. Providing a first baffle 205 in the acute-angle region 206 can isolate the moving contact 211 from the stationary contact 221 when the moving contact 211 is in the open position.

[0088] Preferably, the first baffle 205 is located on the side edge of the acute angle region 206 near the moving contact 211, which can also limit the movement of the moving contact 211.

[0089] Optionally, please refer to the following: Figure 4 The housing 20a is provided with a second receiving groove 204b, the stationary contact assembly 22 is located in the second receiving groove 204b, and there is a support area 204c between the first receiving groove and the second receiving groove 204b. The contact portion 2211 of the stationary contact 221 is disposed on the support area 204c and extends above the first receiving groove 204a to cooperate with the moving contact 211.

[0090] When housings 20a are stacked, the wiring ports 202 on adjacent housings 20a are positioned directly opposite each other, resulting in a smaller creepage distance for the stationary contact 221. To increase the creepage distance of the stationary contact 221, optionally, please refer to... Figure 2a The wiring port 202 is provided with a second baffle 207a and a third baffle 207b on its side. When at least two housings 20a are stacked, the opening of the second baffle 207a on one housing 20a is blocked by the third baffle 207b on the other housing 20a to form an annular baffle around the wiring port 202.

[0091] For example, the second baffle 207a is U-shaped, with its opening facing upward and located on the upper surface of the housing 20a, and the third baffle 207b is a flat plate, located below the second baffle 207a.

[0092] Optionally, two fourth baffles 207c are respectively provided on the first side 201a and the second side 201b of the housing 20a. The two fourth baffles 207c are located on opposite sides of the second baffle 207a, and are spaced apart from the second baffle 207a, forming an isolation space between them. Preferably, the second baffle 207a, the third baffle 207b, and the fourth baffle 207c are equal in size in a predetermined direction to make the end face of the housing 20a flat.

[0093] Optionally, one of the upper and lower surfaces of the housing 20a is provided with a hook 208a and the other with a slot 208b. The hook 208a on one housing 20a engages with the slot 208b on the other housing 20a, thereby connecting the two adjacent housings 20a.

[0094] Furthermore, the side of the hook 208a is also provided with multiple welding rods 208c. The multiple welding rods 208c are distributed at intervals along a preset direction. After the two shells 20a are spliced, the welding rods 208c are located between the hook 208a and the slot 208b, and are used to weld the hook 208a and the slot 208b to improve the stability of the connection between the shells 20a.

[0095] Optionally, the housing 20a also has a fourth side 201d, which is opposite to the third side 201c. The housing 20a is provided with multiple air passages 209a, which extend along the third side 201c or the fourth side 201d. The first end of the air passage 209a communicates with the first receiving groove 204a, and the end is located on the first side 201a or the second side 201b.

[0096] Furthermore, there are four air passages 209a. Two air passages 209a extend along the third side 201c, with their ends located at the first side 201a and the second side 201b, respectively. The other two air passages 209a extend along the fourth side 201d, with their ends located at the first side 201a and the second side 201b, respectively. Multiple obstructions 209b can be staggered and spaced along the extension direction of each air passage 209a. Gas must pass around these obstructions sequentially before exiting the passage. This effectively extends the actual movement path of the gas within the air passage 209a while maintaining its original length.

[0097] Alternatively, please refer to Figure 5 The moving contact assembly 21 also includes a contact support 210, with the moving contact 211 disposed on the contact support 210. The two ends of the contact support 210 respectively form semi-closed opening slots 216, and the end of the moving contact 211 that mates with the stationary contact 221 is located in the opening slots 216.

[0098] The moving contact 211 consists of two pieces, stacked together. The stationary contact 221 of the stationary contact assembly 22 extends between the two moving contacts 211 to achieve contact. A spring piece 212 is also provided on the side of the two moving contacts 211 furthest from each other to press the area between them, thus clamping the stationary contact 221 and achieving reliable contact between the moving contacts 211 and the stationary contact 221. The arrangement of two moving contacts 211 increases the contact area with the stationary contact assembly 22, effectively dissipating heat.

[0099] The two ends of the contact bracket 210 respectively form semi-closed opening slots 216. For example, the opening slots 216 are U-shaped slots. The end of the moving contact 211 is located in the opening slots 216 to achieve a semi-enclosed setting of the moving contact 211, which serves to insulate the area behind the opening slots 216.

[0100] In this application, the opening slots 216 at both ends of the moving contact 211 are arranged opposite to each other. Therefore, the opening slots 216 can isolate one end of the moving contact 211 from the other end, preventing the electric arc from interfering with each other when the two ends of the moving contact 211 come into contact with or separate from the corresponding stationary contact assembly 22, thus affecting the opening and closing performance.

[0101] In addition, fifth baffles 213 are formed on both sides of the contact bracket 210. When the circuit is open, the line connecting any fifth baffle 213, the adjacent stationary contact assembly 22 and the end of the moving contact assembly 21 that is in contact with the stationary contact assembly 22 forms a triangle to increase the creepage distance.

[0102] Please refer to Figure 6 A line L1 is formed between the left stationary contact assembly 22 and the lower fifth baffle 213, a line L2 is formed between the lower fifth baffle 213 and the lower end of the moving contact 211, and a line L3 is formed between the left stationary contact assembly 22 and the lower end of the moving contact 211. The above three lines form a triangle. According to the rule that the sum of two sides of a triangle is greater than the third side, that is, L1 + L2 > L3.

[0103] The fifth baffle 213 effectively separates the lower ends of the left stationary contact assembly 22 and the moving contact 211, creating an electrical gap L1+L2 that is larger than the electrical gap L3 between the lower ends of the left stationary contact assembly 22 and the moving contact 211 when they are directly face to face. This increases the electrical gap, increases the arc movement length, thereby increasing the creepage distance and making it easier to extinguish the arc. This is beneficial to the stability and safety of the opening and closing of the moving and stationary contacts.

[0104] The upper ends of the left stationary contact assembly 22 and the moving contact 211, and the two ends of the right stationary contact assembly 22 and the moving contact 211, are each formed into a triangle to increase the creepage distance. See the attached diagram for details. Figure 6 Examples are omitted.

[0105] For the multilayer switch unit 20, please refer to Figure 5 The contact bracket 210 has a first rotating protrusion 214 and a second rotating protrusion 215 on both sides. The first rotating protrusion 214 of the uppermost switch unit 20 is connected to the connecting protrusion 143 of the rotating shaft 14. The adjacent two layers of switch units 20 are connected through their respective first rotating protrusion 214 and second rotating protrusion 215, thereby realizing the synchronous rotation of the multi-layer switch units 20.

[0106] Please refer to Figure 7 and Figure 8 This application also discloses a rotary switch 100, which includes a plurality of switch units 20 and an operating mechanism 10 stacked along a first direction as described above. The rotating shaft 14 of the operating mechanism 10 is connected to the moving contact assembly 21 of the switch unit 20 for driving the moving contact assembly 21 to rotate to open or close with the stationary contact assembly 22.

[0107] The rotary switch 100 has the same structure and beneficial effects as the switch unit 20 in the foregoing embodiments. The structure and beneficial effects of the switch unit 20 have been described in detail in the foregoing embodiments and will not be repeated here.

[0108] Alternatively, please refer to Figure 9 and Figure 10 The projections of the two sets of stationary contact assemblies 22 in two adjacent switch units 20 coincide or substantially coincide in the first direction c. This regular layout of the rotary switch 100 allows for flexible increases or decreases in the number of stacked switch units 20 to adapt to different scenario requirements.

[0109] like Figure 9 and Figure 10 As shown, when the projections of the stationary contact assemblies 22 of two adjacent switch units 20 in the first direction c completely overlap, a first projection P of solid line is formed; when the projections of the stationary contact assemblies 22 of two adjacent switch units 20 in the first direction c are slightly deviated due to installation errors and other reasons, but basically overlap, a second projection P0 of solid line and dashed line overlapping is formed.

[0110] The projection of the stationary contact assembly 22 of each layer of switch unit 20 may have different deviations, and the projection deviations of the stationary contact assemblies 22 on the left and right sides of the same layer of switch unit 20 may also be different.

[0111] Alternatively, please refer to Figure 8 , Figure 9 and Figure 11 The operating mechanism 10 includes a mechanism base 15 and a rotating shaft 14 disposed within the mechanism base 15. The rotating shaft 14 is used to connect with the moving contact assembly 21 to drive the moving contact assembly 21 to rotate. A limit structure is provided between the mechanism base 15 and the rotating shaft 14 so that the rotation angle of the moving contact assembly is an obtuse angle.

[0112] The mechanism base 15 and the rotating shaft 14 cooperate. The rotating shaft 14 is located inside the mechanism base 15 and is connected to the moving contact assembly 21. The rotating shaft 14 drives the moving contact assembly 21 to rotate so as to contact or separate from the stationary contact assembly 22, thereby realizing the closing or opening of the circuit.

[0113] A limiting structure is provided between the mechanism base 15 and the rotating shaft 14. The limiting structure restricts the rotation angle 'a' of the rotating shaft 14, which in turn restricts the rotation angle 'a' of the moving contact assembly 21. This application, through the limiting structure, restricts the rotation angle 'a' of the moving contact assembly 21 to an obtuse angle range greater than 90°, for example, a rotation angle 'a' of 120°. Compared to the prior art where the moving contact performs opening and closing operations with a 90° rotation angle, this application's rotation angle 'a' is within an obtuse angle range, enabling large-angle opening and closing operations, significantly improving product performance without increasing the product's size.

[0114] Alternatively, please refer to Figures 12 to 14 The limiting structure includes two first limiting protrusions 152 disposed on the mechanism base 15 and two second limiting protrusions 143a disposed on the rotating shaft 14. The obtuse angle rotation range is achieved by the abutment of the corresponding first limiting protrusions 152 and second limiting protrusions 143a.

[0115] For example, the first limiting protrusion 152 has a first sidewall 152a and a second sidewall 152b, and the second limiting protrusion 143a has a third sidewall 143a1 and a fourth sidewall 143a2. When any second limiting protrusion 143a rotates from the position where the fourth sidewall 143a2 abuts against the first sidewall 152a of the corresponding first limiting protrusion 152 to the position where the third sidewall 143a1 abuts against the second sidewall 152b of another first limiting protrusion 152, the rotation angle α is an obtuse angle.

[0116] The fourth sidewall 143a2 of the second limiting protrusion 143a abuts against the first sidewall 152a of the corresponding first limiting protrusion 152, such as Figure 11 In the middle, that is, the third sidewall 143a1 separates from the corresponding second sidewall 152b; the third sidewall 143a1 abuts against the second sidewall 152b of another first limiting protrusion 152, that is... Figure 13 The fourth sidewall 143a2 is separated from the first sidewall 152a of the corresponding first limiting protrusion 152.

[0117] The second limiting convex 143a from Figure 11 Position rotated to Figure 13 When in position, the rotation angle 'a' is an obtuse angle, thereby limiting the rotation angle 'a' of the rotating shaft 14 to an obtuse angle range.

[0118] Reference Figure 11 It should be noted that the smaller the width d between the third sidewall 143a1 and the fourth sidewall 143a2 of the second limiting protrusion 143a in this application, the larger the range of rotation of the rotation angle a, that is, the larger the value of the rotation angle a.

[0119] Furthermore, the mechanism base 15 is provided with a receiving groove 150, and the rotating shaft 14 is located in the receiving groove 150; a through hole 151 is provided in the receiving groove 150, and a first limiting protrusion 152 is formed in the hole wall of the through hole 151; a connecting protrusion 143 is provided on the rotating shaft 14, and the connecting protrusion 143 passes through the through hole 151 to connect with the moving contact assembly 21, and a second limiting protrusion 143a is formed on the connecting protrusion 143.

[0120] Alternatively, please refer to Figure 7 and Figure 14The operating mechanism 10 also includes a handle 11, a mechanism cover 12, and a lever 13 arranged sequentially. One end of the lever 13 passes through the mechanism cover 12 and is connected to the handle 11. An elastic element 16 is sleeved on the rotating shaft 14. For example, the elastic element 16 is a torsion spring, which is sleeved on the central shaft 140 of the rotating shaft 14. The other end of the lever 13 is linked to the rotating shaft 14 through the elastic element 16. The handle 11 drives the lever 13 to rotate, and the rotation of the lever 13 drives the elastic element 16 to store energy to drive the rotating shaft 14 to rotate.

[0121] Lever 13 is equipped with Figure 15 The bending portion 131 shown has one end of the elastic element 16 connected to the bending portion 131 and the other end connected to the protrusion 144 of the rotating shaft 14. When the lever 13 rotates, the bending portion 131 drives the torsion spring to rotate and store energy.

[0122] The upper cover 12 of the mechanism is provided with a first limiting platform 121 and a second limiting platform 122. The first limiting platform 121 and the second limiting platform 122 are used to limit the rotating shaft 14 in the closed and open positions respectively. An obtuse angle is provided between the first limiting platform 121 and the second limiting platform 122 to further limit the rotation angle α of the rotating shaft 14 within the obtuse angle range.

[0123] Specifically, such as Figure 16 , Figure 17 As shown, two cantilever beams 141 are formed on the rotating shaft 14, with a gap t between the cantilever beams 141 and the rotating shaft 14, and an opening 142 is formed between the two cantilever beams 141. When the opening 142 is engaged with the first limiting platform 121 and the second limiting platform 122 respectively, the closing position and the opening position of the rotating shaft 14 are limited.

[0124] The operating mechanism 10 of this application operates as follows, taking the operation from open to closed as an example: Rotating the handle 11 from the open position to the closed position drives the lever 13 to rotate. The rotation of the lever 13 causes the torsion spring to store energy. At this time, the rotating shaft 14 is locked because the opening 142 is engaged with the second limit plate 122, and the torsion spring cannot drive the rotating shaft 14 to rotate. The handle 11 continues to drive the lever 13 to rotate, causing the first locking protrusion 132 of the lever 13 to rotate towards the opening 142 and press down on the cantilever beam 141, causing the opening 142 and the second limit plate 122 to disengage, releasing the locked state. At this time, the torsion spring releases energy and drives the rotating shaft 14 to rotate. When the rotating shaft 14 rotates to the position where the opening 142 is engaged with the first limit plate 121, the rotating shaft 14 is locked, completing the closing process. The process from closed to open is the reverse and will not be described further.

[0125] The lever 13 is also provided with a first locking protrusion 132 and a second locking protrusion 133, and the mechanism cover 12 is provided with a third limiting platform 123. The lever 13 is limited by the third limiting platform 123 abutting against the first locking protrusion 132 and the second locking protrusion 133 respectively.

[0126] Specifically, such as Figure 18 As shown, the third limiting platform has a fifth sidewall 123a and a sixth sidewall 123b facing away from each other, for abutting against the sidewall 132a of the first locking protrusion 132 and the sidewall 133a of the second locking protrusion 133, respectively. When the sidewall 132a of the first locking protrusion 132 abuts against the fifth sidewall 123a, the rotation range between the sidewall 133a of the second locking protrusion 133 and the sixth sidewall 123b is an obtuse angle. When the sidewall 133a of the second locking protrusion 133 abuts against the sixth sidewall 123b, the rotation range between the sidewall 132a of the first locking protrusion 132 and the fifth sidewall 123a is an obtuse angle.

[0127] Alternatively, please refer to Figures 19 to 23 The operating mechanism 10 includes a drive assembly 10A, a rotating shaft 14 pulverizedly connected to the drive assembly 10A, and a mechanism cover 12 capable of locking or unlocking the rotating shaft 14. The operating mechanism 10 has a first working position and a second working position distributed circumferentially thereafter. In the first working position, the mechanism cover 12 locks the rotating shaft 14. Rotation of the drive assembly 10A in either the forward direction A or the reverse direction B can act on the rotating shaft 14 to unlock it relative to the mechanism cover 12 and drive the rotating shaft 14 to rotate, thereby switching the rotating shaft 14 to the second working position. This operating mechanism 10 can switch between opening and closing states by rotating in either the forward direction A or the reverse direction B, providing diverse switching methods.

[0128] It should be noted that the aforementioned drive assembly 10A is used to drive the rotating shaft 14 to rotate, and its specific structural form is not limited in this application. The drive assembly 10A can be driven by the handle 11, that is, the handle 11 drives the drive assembly 10A to move, and the drive assembly 10A drives the rotating shaft 14 to rotate.

[0129] The aforementioned rotating shaft 14 is connected to the drive assembly 10A on one hand and is driven by the drive assembly 10A on the other hand, and is used to connect to the moving contact assembly 21 of the rotary switch 100 to drive the moving contact assembly 21 to rotate so that the moving contact assembly 21 is opened or closed with the stationary contact assembly 22 of the rotary switch 100.

[0130] It should be noted that, please refer to Figure 17 and Figure 18 The rotating shaft 14 may be provided with a mating hole 145 on the side near the moving contact assembly 21. The moving contact assembly 21 may be provided with a mating structure 2101 that mates with the mating hole 145. The mating structure 2101 mates with the mating hole 145, and the rotating shaft 14 can drive the moving contact assembly 21 by mating with the mating structure 2101 of the moving contact assembly 21 through the mating hole 145.

[0131] In this embodiment, the operating mechanism 10 has a first working position and a second working position, wherein the first working position and the second working position are distributed along the circumferential direction of the operating mechanism 10. The circumferential direction of the operating mechanism 10 can also be considered as the rotation direction of the drive component 10A, that is, the first working position and the second working position are distributed along the rotation direction of the drive component 10A.

[0132] The first working position represents one working state of the operating mechanism 10, and the second working position represents another working state of the operating mechanism 10. In this embodiment, one of the first working position and the second working position is the open position and the other is the closed position. For example, when the first working position is the open position, the second working position is the closed position; conversely, when the first working position is the closed position, the second working position is the open position.

[0133] In addition, the rotating shaft 14 can also engage or disengage with the upper cover 12 of the mechanism. When the rotating shaft 14 engages with the upper cover 12 of the mechanism, the rotating shaft 14 is locked by the upper cover 12 of the mechanism and cannot rotate. When the rotating shaft 14 disengages from the upper cover 12 of the mechanism, the rotating shaft 14 is unlocked relative to the upper cover 12 of the mechanism and can rotate.

[0134] It should be noted that in this embodiment, when the operating mechanism 10 is in the first working position and the second working position, the rotating shaft 14 is locked by the mechanism cover 12, and the operating mechanism 10 can be fixed in the corresponding position; when the operating mechanism 10 switches between the first working position and the second working position, the driving component 10A can act on the rotating shaft 14 to unlock the rotating shaft 14 from the mechanism cover 12.

[0135] In this embodiment, when the operating mechanism 10 is in the first working position, the driving component 10A drives the rotating shaft 14 to rotate along either the forward direction A or the reverse direction B, and the rotating shaft 14 can switch the operating mechanism 10 to the second working position. When the operating mechanism 10 is in the second working position, the driving component 10A drives the rotating shaft 14 to rotate along either the forward direction A or the reverse direction B, and the rotating shaft 14 can switch the operating mechanism 10 to the first working position. That is to say, in this embodiment, the switching between the first working position and the second working position can be achieved by driving the rotating shaft 14 to rotate either the forward direction A or the reverse direction B. Thus, this application can achieve bidirectional driving of the operating mechanism 10 when switching states, and the state switching mode of the operating mechanism 10 is diversified, which can be applied to a variety of application scenarios.

[0136] Alternatively, please refer to Figures 21 to 24The upper cover 12 of the mechanism has a first limiting platform 121 on the side near the rotating shaft 14, and the rotating shaft 14 has a cantilever beam 141 on the side near the upper cover 12 of the mechanism. The drive assembly 10A has a pressing part 134. In the first working position and the second working position, the cantilever beam 141 and the first limiting platform 121 cooperate to lock the upper cover 12 of the mechanism and the rotating shaft 14 circumferentially. When the operating mechanism 10 switches between the first working position and the second working position, the drive assembly 10A is driven to rotate in the forward direction A or the reverse direction B, and the pressing part 134 can act on the cantilever beam 141 to unlock the rotating shaft 14 from the upper cover 12 of the mechanism circumferentially.

[0137] The first limiting platform 121 on the upper cover 12 of the mechanism and the cantilever beam 141 on the rotating shaft 14 can cooperate or disengage, thereby locking or unlocking the upper cover 12 of the mechanism.

[0138] In this embodiment, please refer to Figure 20 and Figure 21 The upper cover 12 of the mechanism is also provided with a through groove 125, which is used for the end of the drive assembly 10A away from the rotating shaft 14 to pass through. It should be noted that the end of the drive assembly 10A extending through the through groove 125 towards the side away from the rotating shaft 14 can be connected to the handle 11, so that the drive assembly 10A can be driven to rotate by the handle 11.

[0139] In addition, the side of the mechanism cover 12 facing the rotating shaft 14 may also be provided with a receiving groove 124 communicating with the through groove 125. The receiving groove 124 is located between the through groove 125 and the rotating shaft 14. At least a part of the drive assembly 10A can be received in the receiving groove 124, and another part can extend through the through groove 125 to the outside of the through groove 125.

[0140] It should be noted that when the upper cover 12 and the rotating shaft 14 are locked, the first limiting platform 121 is engaged within the cantilever beam 141. Thus, due to the blocking effect of the first limiting platform 121, the rotating shaft 14 cannot rotate. In other words, in both the first and second working positions, the first limiting platform 121 is engaged within the cantilever beam 141.

[0141] The pressing part 134 provided on the drive assembly 10A can act on the cantilever beam 141. In this embodiment, the drive assembly 10A is driven to rotate in either the forward direction A or the reverse direction B. The pressing part 134 can act on the cantilever beam 141 in both directions, thereby unlocking the cantilever beam 141 from the first limiting platform 121. At this time, the rotating shaft 14 is no longer restricted, and the rotating shaft 14 can start to rotate under the drive of the drive assembly 10A, thereby realizing the state switching.

[0142] Alternatively, please refer to Figure 25 and Figure 26The drive assembly 10A includes a lever 13 and an elastic element 16. One end of the elastic element 16 is connected to the lever 13 and the other end is connected to the rotating shaft 14. A pressing part 134 is located on the lever 13. When the mechanism cover 12 and the rotating shaft 14 are circumferentially locked, the lever 13 drives the elastic element 16 to rotate, and the elastic element 16 stores energy. When the mechanism cover 12 and the rotating shaft 14 are circumferentially unlocked, the elastic element 16 releases energy and drives the rotating shaft 14 to rotate.

[0143] In other words, when the operating mechanism 10 is in the first or second working position, both the mechanism cover 12 and the rotating shaft 14 are locked. When the operating mechanism 10 switches between the first and second working positions, it drives the lever 13 to rotate, and the elastic element 16 rotates accordingly, storing energy. When the pressing part 134 on the lever 13 acts on the cantilever beam 141 on the rotating shaft 14, the rotating shaft 14 and the mechanism cover 12 are unlocked. At this time, the elastic element 16 can release energy to drive the rotating shaft 14 to rotate, thereby realizing the state switching.

[0144] In this embodiment, the lever 13 includes a first body 13A and a bent portion 131 connected to the first body 13A and bent toward the pivot 14. A pressing portion 134 is provided on the first body 13A. The bent portion 131 is used to drive the elastic element 16 to store energy. That is, when the lever 13 rotates, the bent portion 131 on the lever 13 drives the elastic element 16 to store energy. In this embodiment, the elastic element 16 is a torsion spring.

[0145] Please refer to Figure 22 and Figure 25 The lever 13 also includes a rotating shaft 135 connected to the first body 13A. The rotating shaft 135 is located on the side of the first body 13A opposite to the rotating shaft 14 and is used to drive the first body 13A to rotate. That is, the first body 13A can be driven to rotate by the rotating shaft 135. It should be noted that the rotating shaft 135 can be connected to the handle 11. In this case, the rotating shaft 135 can pass through the through slot 125 of the mechanism cover 12 and be connected to the handle 11.

[0146] Also, please refer to Figure 31 and Figure 32 The aforementioned cantilever beam 141 may include a first cantilever beam 141A and a second cantilever beam 141B located on the rotating shaft 14. An opening 142 is provided between the first cantilever beam 141A and the second cantilever beam 141B. In the working position, the first limiting platform 121 is clamped between the first cantilever beam 141A and the second cantilever beam 141B.

[0147] Thus, when the operating mechanism 10 is in the first or second working position, the first limiting platform 121 engages with the opening 142 between the first cantilever beam 141A and the second cantilever beam 141B. At this time, when the drive lever 13 rotates forward (A) or backward (B), the pressing part 134 can act on one of the cantilever beams (forward rotation A can act on the second cantilever beam 141B, and backward rotation B can act on the first cantilever beam 141A), thereby unlocking the rotating shaft 14 and the mechanism cover 12. At this time, the rotating shaft 14 can rotate under the energy release action of the elastic element 16 (the elastic element 16 is driven and stores energy when the lever 13 rotates), thereby realizing the state switching.

[0148] Optionally, the pressing part 134 includes two parts, which are spaced apart on the lever 13. One end of the elastic member 16 is fixedly connected to the lever 13, and the other end is fixedly connected to the rotating shaft 14. In this way, when the drive assembly 10A rotates in the forward direction A, one pressing part 134 can act on the second cantilever beam 141B; when the drive assembly 10A rotates in the reverse direction B, the other pressing part 134 can act on the first cantilever beam 141A. Thus, the movement stroke of the drive assembly 10A is shorter and the switching speed is faster when the state changes.

[0149] Optionally, both the first working position and the second working position include an even number, the number of the first working position and the second working position are the same, and the first working position and the second working position are alternately arranged.

[0150] In other words, in this embodiment, the first working position and the second working position appear in pairs, and the number of the first working position and the second working position are the same. For example, there are two first working positions and two second working positions; or, there are four first working positions and four second working positions; or, there are four first working positions and four second working positions. In this embodiment, the structural examples in the accompanying drawings are all shown with two first working positions and two second working positions as examples. However, it should be understood that the illustrations are only examples and are not intended to limit this application.

[0151] It should be noted that the number of the first working station and the second working station should correspond to the number of the first limiting stage 121. That is, if there are two first working stations and two second working stations, then there are four first limiting stages 121. Figure 24 As shown.

[0152] Additionally, please refer to Figures 27 to 30 This application may further include a mechanism base 15, which has a receiving groove 150, a receiving cavity 153, and a through hole 151 between the receiving groove 150 and the receiving cavity 153, the through hole 151 connecting the receiving groove 150 and the receiving cavity 153 (e.g., Figure 27 and Figure 28 (As shown).

[0153] The rotating shaft 14 can be disposed within the receiving groove 150, and at least a portion of the moving contact assembly 21 can be disposed within the receiving cavity 153, such as... Figure 29 and Figure 30 As shown.

[0154] In this embodiment, the moving contact assembly 21 of the plurality of switching units 20 may be configured in at least the following two ways.

[0155] In the first feasible setup method, such as Figure 35 As shown, optionally, the orthographic projections of the moving contact assemblies 21 of any two adjacent switching units 20 along the first direction c are coincident or substantially coincident.

[0156] In other words, in this configuration, the moving contact assembly 21 of each switching unit 20 is synchronously opened or closed. When the moving contact assembly 21 of one switching unit 20 closes with its corresponding stationary contact assembly 22, the moving contact assembly 21 of the other switching units 20 can also close with its corresponding stationary contact assembly 22; conversely, when the moving contact assembly 21 of one switching unit 20 opens with its corresponding stationary contact assembly 22, the moving contact assembly 21 of the other switching units 20 can also open with its corresponding stationary contact assembly 22.

[0157] It should be noted that, as Figure 33 As shown, when the projections of the moving contact assemblies 21 of two adjacent switch units 20 completely overlap in the first direction c, a third projection P2, consisting of a solid line, is formed; as shown Figure 36 As shown, when the projections of the moving contact assemblies 21 of two adjacent switch units 20 in the first direction c are slightly deviated and basically coincident due to installation errors and other reasons, a fourth projection P20 with overlapping solid and dashed lines is formed.

[0158] The projection of the moving contact assembly 21 of each layer of switch unit 20 may have different deviations.

[0159] In the second feasible configuration method, such as Figure 34 As shown, optionally, the moving contact assembly 21 of at least one switching unit 20 is arranged intersecting the moving contact assembly 21 of other switching units 20 along the orthographic projection of the first direction c.

[0160] It should be noted that the above-mentioned intersection state can be a perpendicular state or a near-perpendicular state, and this application does not impose any specific restrictions.

[0161] Specifically, when the projections of the moving contact assemblies 21 of two adjacent switch units 20 in the first direction c are completely perpendicular, their projected outlines in the first direction c are also completely perpendicular. When the projections of the moving contact assemblies 21 of two adjacent switch units 20 in the first direction c are slightly deviated due to installation errors or other reasons, but are basically perpendicular, their projected outlines in the first direction c are approximately perpendicular, with only a small angular deviation. The projections of the moving contact assemblies 21 in each switch unit 20 may have their own deviations.

[0162] In this configuration, at least one switching unit 20 has a moving contact assembly 21 whose orthogonal projection in the first direction c intersects with that of other moving contact assemblies 21. That is, when the moving contact assembly 21 of other switching units 20 closes with its corresponding stationary contact assembly 22, at least one switching unit 20 has its moving contact assembly 21 open with its corresponding stationary contact assembly 22.

[0163] For example, suppose there are five switching units 20, wherein the orthographic projection of the moving contact assembly 21 of at least one switching unit 20 in the first direction c intersects with the moving contact assemblies 21 of the other switching units 20. For example, the orthographic projections of the moving contact assemblies 21 of four switching units 20 may coincide or substantially coincide in the first direction c, and the moving contact assembly 21 of the remaining switching unit 20 may intersect with the moving contact assemblies 21 of the other four switching units 20; or, for another example, the orthographic projections of the moving contact assemblies 21 of three switching units 20 may coincide or substantially coincide in the first direction c, and the moving contact assemblies 21 of the remaining two switching units 20 may intersect with the moving contact assemblies 21 of the other three switching units 20. In other words, this application does not limit the specific number and distribution relationship of the switching units 20 in which the moving contact assemblies 21 are arranged in an intersecting manner, and those skilled in the art can choose according to actual needs.

[0164] Please refer to Figure 37 This application also discloses a power supply system, including a control unit 33, a power supply 31, a power conversion switch 32, and the aforementioned rotary switch 100. The rotary switch 100 is electrically connected between the power supply 31 and the power conversion switch 32. The control unit 33 is used to send relevant signals from the power supply 31 or the power conversion switch 32 to the rotary switch 100.

[0165] The rotary switch 100 has at least one layer of switch unit 20 connected to the first circuit, and other layers of switch unit 20 connected to other circuits that are not the first circuit.

[0166] In another aspect of this application, a power supply system is provided, which includes the rotary switch 100 described above, wherein at least one switching unit 20 of the rotary switch 100 is connected to a first power source.

[0167] The rotary switch 100 includes multiple switch units 20 stacked along a first direction c and an operating mechanism 10 as described above. The first direction c is parallel to the arrangement direction of the drive assembly 10A and the rotating shaft 14 of the operating mechanism 10. Each switch unit 20 includes a housing 20a, a moving contact assembly 21 and a stationary contact assembly 22 respectively disposed within the housing 20a. The rotating shaft 14 of the operating mechanism 10 is drively connected to the moving contact assembly 21 and is used to drive the moving contact assembly 21 to rotate to open or close the circuit with the stationary contact assembly 22. It should be noted that the specific structure of the operating mechanism 10 and the switch units 20 of the rotary switch 100 can be referred to the above description and will not be repeated here.

[0168] Furthermore, in this rotary switch 100, the orthographic projections of the moving contact assemblies 21 of any two adjacent switch units 20 along the first direction c are coincident or substantially coincident. In this case, at least one switch unit 20 in the power supply system is used as a rotary switch to connect to the first power supply, while other switch units 20 can be used as rotary switches or ordinary switches to connect to other circuits.

[0169] This application also provides a power supply system, please refer to... Figure 16 , Figure 30 and Figure 31 The power supply system includes the rotary switch 100 described above. The rotary switch 100 includes at least an even number of switch units 20, and half of the even number of switch units 20 are connected to a first power source, while the other half are connected to a second power source.

[0170] The rotary switch 100 included in this power supply system also includes multiple switch units 20 stacked along a first direction c and the operating mechanism 10 mentioned above. The first direction c is parallel to the arrangement direction of the drive assembly 10A and the rotating shaft 14 of the operating mechanism 10. Each switch unit 20 includes a housing 20a, a moving contact assembly 21 and a stationary contact assembly 22 respectively disposed within the housing 20a. The rotating shaft 14 of the operating mechanism 10 is drively connected to the moving contact assembly 21 and is used to drive the moving contact assembly 21 to rotate to open or close the circuit with the stationary contact assembly 22. It should be noted that the specific structure of the operating mechanism 10 and the switch units 20 of the rotary switch 100 can be referred to the above description and will not be repeated here.

[0171] Compared with the power supply system described above, the power supply system is different in that half of the even-numbered switch units 20 in the rotary switch 100 of this power supply system are connected to the first power source, and the other half are connected to the second power source.

[0172] It should be noted that the rotary switch 100 of the power supply system includes at least an even number of switch units 20, that is, the number of switch units 20 in the rotary switch 100 is greater than or equal to 2. Furthermore, half of the even number of rotary switches 100 are connected to the first power source, and the other half are connected to the second power source.

[0173] For example, the rotary switch 100 includes two switching units 20, one connected to a first power source and the other connected to a second power source. In this case, the rotary switch 100 can be used as a dual-power switch.

[0174] For example, the rotary switch 100 includes three switch units 20, wherein one of two switch units 20 is connected to a first power source and the other is connected to a second power source, and is used as a dual power supply switch; the remaining switch unit 20 can be used as a rotary switch or a regular switch to connect to other circuits.

[0175] For example, the rotary switch 100 includes four switch units 20, wherein two of the four switch units 20 are connected to a first power source and the other two switch units 20 are connected to a second power source, and are used as a dual power supply switch.

[0176] For example, the rotary switch 100 includes five switch units 20, wherein two of the four switch units 20 are connected to a first power source and the other two switch units 20 are connected to a second power source, serving as a dual-power switch; the remaining switch unit 20 can be used as a rotary switch 100 or a regular switch to connect to other circuits.

[0177] 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 switching unit, characterized in that, The device includes a housing (20a), two sets of stationary contact assemblies (22) and a moving contact assembly (21) disposed within the housing (20a). The stationary contact assembly (22) includes a stationary contact (221), and the moving contact assembly (21) includes a moving contact (211). The stationary contact (221) includes a contact portion (2211) and a wiring portion (2212). The two contact portions (2211) respectively cooperate with the moving contact (211). The contact portions (2211) extend in a straight line in a preset direction (b), and the two contact portions (2211) are arranged opposite each other in the preset direction (b). The preset direction is perpendicular to the rotation axis (135) of the moving contact assembly (21). The housing (20a) has a first side (201a) and a second side (201b) facing each other. The first side (201a) and the second side (201b) are respectively provided with wiring ports (202), and the two wiring ports (202) correspond to the two wiring parts (2212). When at least two housings (20a) are stacked, the wiring ports (202) on two adjacent layers of housings (20a) are facing each other in a first direction (c), and the first direction (c) is perpendicular to the preset direction (b).

2. The switching unit according to claim 1, characterized in that, The housing (20a) has a third side (201c) located between the first side (201a) and the second side (201b). The third side (201c) is provided with two wiring channels (203), which correspond to the wiring portions (2212) of the two stationary contacts (221) respectively. The wiring channels (203) are used for the passage of the terminals (23) connected to the wiring portions (2212).

3. The switching unit according to claim 1, characterized in that, The housing (20a) is provided with a first receiving groove (204a), the moving contact assembly (21) is located in the first receiving groove (204a), and the first receiving groove (204a) is provided with two first baffles (205); When the moving contact (211) is in the closed position, the orthographic projection of the moving contact (211) on the bottom of the first receiving groove (204a) and the orthographic projection of the moving contact (211) on the bottom of the first receiving groove (204a) when the moving contact (211) is in the open position, and the edge of the bottom of the first receiving groove (204a) form two acute-angle regions (206), and the two first baffles (205) are respectively located in the two acute-angle regions (206).

4. The switching unit according to claim 1, characterized in that, The side of the wiring port (202) is provided with a second baffle (207a) and a third baffle (207b). When at least two housings (20a) are stacked, the opening (142) of the second baffle (207a) on one housing (20a) is blocked by the third baffle (207b) on the other housing (20a) to form an annular baffle around the wiring port (202).

5. The switching unit according to claim 4, characterized in that, The first side (201a) and the second side (201b) of the housing (20a) are respectively provided with two fourth baffles (207c). The two fourth baffles (207c) are respectively located on opposite sides of the second baffle (207a), and the fourth baffles (207c) and the second baffle (207a) are spaced apart.

6. The switching unit according to claim 1, characterized in that, The two sets of stationary contact assemblies (22) are located in the center of the housing (20a).

7. The switching unit according to claim 1, characterized in that, The moving contact assembly (21) further includes a contact support (210), the moving contact (211) is disposed on the contact support (210), and the two ends of the contact support (210) respectively form semi-closed opening slots (216), the end of the moving contact (211) that cooperates with the stationary contact (221) is located in the opening slots (216).

8. The switching unit according to claim 7, characterized in that, The outer periphery of the contact support (210) is provided with two opposing fifth baffles (213). When the switch unit (20) is in the open position, the line connecting the end of the fifth baffle (213) away from the contact support (210), the stationary contact (221), and the moving contact (211) forms a triangle.

9. A rotary switch, characterized in that, The device includes a plurality of switch units and operating mechanisms (10) as described in any one of claims 1 to 8 stacked along a first direction (c), wherein the rotating shaft (14) of the operating mechanism (10) is connected to the moving contact assembly (21) of the switch unit (20) for driving the moving contact assembly (21) to rotate to open or close with the stationary contact assembly (22).

10. The rotary switch according to claim 9, characterized in that, The two sets of stationary contact assemblies (22) in two adjacent switching units (20) have their projections in the first direction (c) overlapping to form a first projection (P) or substantially overlapping to form a second projection (P0).

11. The rotary switch according to claim 9, characterized in that, The operating mechanism (10) includes a mechanism base (15) and a rotating shaft (14) disposed in the mechanism base (15). The rotating shaft (14) is used to connect with the moving contact assembly (21) to drive the moving contact assembly (21) to rotate. A limit structure is provided between the mechanism base (15) and the rotating shaft (14) so ​​that the rotation angle (a) of the moving contact assembly (21) is an obtuse angle.

12. The rotary switch according to claim 11, characterized in that, The limiting structure includes two first limiting protrusions (152) disposed on the mechanism base (15) and two second limiting protrusions (143a) disposed on the rotating shaft (14). The first limiting protrusions (152) have a first sidewall (152a) and a second sidewall (152b), and the second limiting protrusions (143a) have a third sidewall (143a1) and a fourth sidewall (143a2). When any of the second limiting protrusions (143a) rotates from the position where the fourth sidewall (143a2) abuts against the first sidewall (152a) of the corresponding first limiting protrusion (152) to the position where the third sidewall (143a1) abuts against the second sidewall (152b) of another first limiting protrusion (152), the rotation angle (a) is the obtuse angle.

13. The rotary switch according to claim 11 or 12, characterized in that, The operating mechanism (10) also includes a handle (11), a mechanism cover (12), and a lever (13) arranged in sequence. One end of the lever (13) passes through the mechanism cover (12) and is connected to the handle (11); the other end of the lever (13) is linked to the rotating shaft (14). The mechanism cover (12) is provided with a first limiting platform (121) and a second limiting platform (122). The first limiting platform (121) and the second limiting platform (122) are used to limit the rotating shaft (14) in the closed and open positions, respectively. An obtuse angle is provided between the first limiting platform (121) and the second limiting platform (122).

14. The rotary switch according to claim 13, characterized in that, The lever (13) is further provided with a first locking protrusion (132) and a second locking protrusion (133). The upper cover (12) of the mechanism is provided with a third limiting platform (123). The third limiting platform (123) forms a fifth sidewall (123a) and a sixth sidewall (123b) facing away from each other, so as to abut against the sidewall (132a) of the first locking protrusion (132) and the sidewall (132a) of the second locking protrusion (133) respectively. catch; When the sidewall (132a) of the first protrusion (132) abuts against the fifth sidewall (123a), the rotation range between the sidewall (132a) of the second protrusion (133) and the sixth sidewall (123b) is the obtuse angle; when the sidewall (132a) of the second protrusion (133) abuts against the sixth sidewall (123b), the rotation range between the sidewall (132a) of the first protrusion (132) and the fifth sidewall (123a) is the obtuse angle.

15. The rotary switch according to claim 9, characterized in that, The operating mechanism (10) includes a drive assembly (10A), a rotating shaft (14) that is driveably connected to the drive assembly (10A), and a mechanism cover (12) that can be locked or unlocked with the rotating shaft (14); the operating mechanism (10) has a first working position and a second working position distributed along its circumference; When the operating mechanism (10) is in the first working position, the upper cover (12) of the mechanism locks the rotating shaft (14); the drive component (10A) can act on the rotating shaft (14) in either the forward (A) or reverse (B) direction to unlock the rotating shaft (14) relative to the upper cover (12) of the mechanism, and drive the rotating shaft (14) to rotate so that the rotating shaft (14) switches to the second working position.

16. The rotary switch according to claim 15, characterized in that, The upper cover (12) of the mechanism has a first limiting platform (121) on the side near the rotating shaft (14), the rotating shaft (14) has a cantilever beam (141) on the side near the upper cover (12), and the drive assembly (10A) has a pressing part (134). When in the first working position and the second working position, the cantilever beam (141) and the first limiting platform (121) cooperate to lock the mechanism cover (12) and the rotating shaft (14) circumferentially; when the operating mechanism (10) switches between the first working position and the second working position, the drive assembly (10A) is driven to rotate in the forward direction (A) or the reverse direction (B), and the pressing part (134) can act on the cantilever beam (141) to unlock the rotating shaft (14) circumferentially from the mechanism cover (12).

17. The rotary switch according to claim 15, characterized in that, Both the first working position and the second working position have an even number, the number of the first working position and the second working position are the same, and the first working position and the second working position are alternately arranged.

18. The rotary switch according to claim 9, characterized in that, The moving contact assemblies (21) of any two adjacent switching units (20) are either coincident or substantially coincident in orthographic projection along the first direction (c).

19. The rotary switch according to claim 9, characterized in that, At least one of the moving contact assemblies (21) of the switching unit (20) is arranged intersecting the moving contact assemblies (21) of the other switching units (20) along the orthographic projection of the first direction (c).

20. A power supply system, characterized in that, The device includes a control unit (33), a power supply (31), a rotary switch as described in any one of claims 9 to 19, and a power conversion switch (32), wherein the rotary switch (100) is electrically connected between the power supply (31) and the power conversion switch (32), and the control unit (33) is used to send relevant signals from the power supply (31) or the power conversion switch (32) to the rotary switch (100).

21. The power supply system according to claim 20, characterized in that, The rotary switch (100) has at least one layer of switch units (20) connected to the first circuit, and the other layers of switch units (20) are connected to other circuits that are not the first circuit.

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