Dual-power transfer switch

Abstract

The present application relates to the technical field of electrical switches, and provides a dual-power transfer switch. The dual-power transfer switch comprises a switch body, an outer cover, a first gear and a drive shaft; the switch body comprises a housing and a handle gear partially exposed out of the housing; the outer cover is connected to the switch body and at least partially covers the outside of the side where the handle gear is located; the first gear is rotatably connected to the outer cover, is located on the side of the outer cover close to the handle gear, and is meshed with the handle gear; and the drive shaft is rotatably connected to the outer cover and is drivingly connected to the first gear to drive the first gear to rotate, and one end of the drive shaft protrudes from the side of the outer cover distant from the handle gear and is used for extending out of a distribution cabinet. According to the present application, by additionally installing the outer cover, the first gear, and the drive shaft outside the switch body, a user can manually drive the switch body to complete switch state transition without opening the distribution cabinet, thereby facilitating user operation.

Description

A dual power transfer switch

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on September 22, 2023, with application number 2023112348289 and application name “A Dual Power Conversion Switch”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of electrical switches, and in particular to a dual power conversion switch. Background Art

[0003] A dual power transfer switch is a switch with a normal power supply and a backup power supply. This type of switch has three important states: normal power on state, backup power on state and dual split state.

[0004] In the related art, the manual opening and closing method of the dual power conversion switch is to insert the handle into the exposed handle gear of the switch, and by turning the handle, the handle gear is driven to rotate, which indirectly drives the operating mechanism of the dual power conversion switch to realize the conversion of the three states.

[0005] Although the existing manual opening and closing method can meet the demand for manual opening and closing of the switch, since the dual power transfer switch is usually installed in a distribution cabinet, in actual use, the user needs to open the distribution cabinet for operation, which causes inconvenience in operation.

[0006] Summary of the Invention

[0007] In view of the above problems, an embodiment of the present application provides a dual power transfer switch, which facilitates users to manually switch the switch state outside the power distribution cabinet.

[0008] The dual power conversion switch provided in the embodiment of the present application includes a switch body, an outer cover, a first gear and a drive shaft; the switch body includes an outer cover and a handle gear partially exposed from the outer cover; the outer cover is connected to the switch body and at least partially covers the outside of the side where the handle gear is located; the first gear is rotationally connected to the outer cover and is located on the side of the outer cover close to the handle gear and is engaged with the handle gear; the drive shaft is rotationally connected to the outer cover and is drivingly connected to the first gear for driving the first gear to rotate, and one end of the drive shaft protrudes from the side of the outer cover away from the handle gear for extending out of the distribution cabinet.

[0009] Through the above solution, the outer cover is connected to the switch body and is used to connect the first gear and the drive shaft. The first gear and the drive shaft are both rotatably connected to the outer cover. When the switch is installed in the power distribution cabinet, if the user wants to manually operate the switch body to change state, they only need to rotate the end of the drive shaft extending outside the power distribution cabinet. The drive shaft can then drive the first gear to rotate. Since the first gear is engaged with the handle gear, the rotation of the first gear can drive the handle gear to rotate, so that the handle gear drives the operating mechanism of the switch body to achieve the switch state conversion. It can be seen that after the outer cover, the first gear and the drive shaft are added to the outside of the switch body, the user can manually drive the switch body to complete the switch state conversion without opening the power distribution cabinet, which is convenient for user operation.

[0010] In some embodiments, the first gear is a sector gear having a sector angle A. The first gear also has a rotation angle B for driving the switch body to switch between a normal power-on state and a standby power-on state, and A≥B.

[0011] In the three states of the switch body, the rotational position of the first gear in the dual-open state is generally between the positions in the normal power state and the backup power state. Therefore, when the switch body transitions between the three states, the maximum rotation angle of the first gear is the angle from the normal power state to the backup power state. Based on this, when A ≥ B, the requirement that the first gear drive the switch body between the three states can be met. On this basis, the first gear is configured as a sector gear. Compared to cylindrical gears, sector gears reduce the material and processing costs of the first gear while meeting the above transition requirements.

[0012] In some embodiments, the first gear includes first meshing teeth and second meshing teeth, the first meshing teeth being located on an end surface of the first gear and the second meshing teeth being located on a circumferential surface of the first gear; the handle gear meshes with the first gear via the first meshing teeth. The switch also includes a second gear rotatably connected to the housing, the drive shaft being coaxially connected to the second gear, and the second gear meshing with the first gear via the second meshing teeth; wherein the pitch circle diameter of the second gear is smaller than the pitch circle diameter of the second meshing teeth.

[0013] When the drive shaft rotates, it directly drives the second gear, which in turn drives the first gear, which in turn drives the handle gear, thereby switching the switch body. In this solution, because the pitch circle diameter of the second gear is smaller than the pitch circle diameter of the second meshing teeth, that is, when the switch is switched, the small gear drives the large gear, thus saving the user effort during operation.

[0014] In some embodiments, the switch also includes a limit member, which is coaxially connected to the drive shaft and / or the first gear, and a limit protrusion is provided on the limit member; an arc-shaped limit groove is provided on the outer shell, and the limit groove is coaxially arranged with the drive shaft, and the limit protrusion is located in the limit groove; when the limit protrusion is located at one end of the limit groove, the switch body is in the normal power supply connected state; when the limit protrusion is located at the other end of the limit groove, the switch body is in the backup power supply connected state.

[0015] Through the above solution, when the user rotates the drive shaft, the limiter can rotate along with the drive shaft and / or the first gear. During the rotation of the limiter, the limit protrusion moves within the limit slot. When the limit protrusion moves to one end or the other end of the limit slot, the limiter can no longer rotate, thereby limiting the rotation of the drive shaft. When the drive shaft can no longer rotate, the user can know that the switch body is in the corresponding state, which is beneficial for the user to know whether the state conversion of the switch body is in place without opening the power distribution cabinet. In addition, by limiting the extreme position of the rotation of the drive shaft by the limiter, it can also prevent the user from rotating the drive shaft too large an angle, causing the meshing relationship between the first gear and the handle gear to fail, and prevent damage to the switch body.

[0016] In some embodiments, a polygonal inner hole is provided on the end surface of the drive shaft protruding from one end of the outer cover, and / or the cross-section of the drive shaft protruding from one end of the outer cover is polygonal, and / or a socket is provided on the end of the drive shaft protruding from the outer cover along the direction perpendicular to the axis of the drive shaft.

[0017] With the above solution, the end face of the drive shaft protruding from the outer cover is provided with a polygonal inner hole. The user can insert a wrench corresponding to the shape of the inner hole or any tool that can be limited by the inner hole into the polygonal inner hole and rotate the tool to rotate the drive shaft. The cross-section of the drive shaft protruding from the outer cover is polygonal. The user can use a wrench on the outer circumference of the drive shaft and rotate the wrench to drive the drive shaft to rotate. The end of the drive shaft protruding from the outer cover is provided with a socket perpendicular to the axis of the drive shaft. The user can insert any tool into the socket and rotate the tool around the drive shaft to drive the drive shaft to rotate. Each of the above structures facilitates the user to operate the drive shaft from outside the cabinet to rotate it and achieve the state transition of the switch body.

[0018] In some embodiments, the switch further comprises a pillar, one end of the pillar being connected to the switch body and the other end being connected to the outer cover, for locating the relative positions of the outer cover and the switch body.

[0019] The support not only locates the relative position of the outer cover and the switch body, but also realizes the connection between the outer cover and the switch body, so that the outer cover and the switch body have a certain connection strength to resist the torsion when the drive shaft rotates.

[0020] In some embodiments, the switch further includes a support portion, which is formed by bending the outer cover. An end of the support portion away from the outer cover rests on the switch body and is fixed by screws.

[0021] One end of the support portion rests against the switch body, positioning the cover and the switch body. The support portion is secured to the switch body with screws, indirectly securing the cover to the switch body. This provides a strong connection between the cover and the switch body to resist torque from the drive shaft.

[0022] In some embodiments, the outer cover includes a panel and a side panel at an angle to each other, the panel covers the outside of the side where the handle gear is located, the side panel abuts against the side wall of the switch body, and the side wall is adjacent to the wall where the handle gear is located.

[0023] The panel covers the exterior of the side where the handle gear is located. Therefore, the panel is relatively close to the handle gear and can be used to connect the first gear, the drive shaft, and other related components to mesh the first gear with the handle gear. The side panel and the panel are angled relative to each other. When the drive shaft rotates and applies torque to the panel, the side panel abuts against the side wall of the switch body, limiting rotation of the panel. This further stabilizes the relative position between the cover and the switch body, making it less susceptible to change.

[0024] In some embodiments, a protrusion is provided on one side of the side panel close to the side wall, and the side panel abuts against the side wall through the protrusion.

[0025] If the entire surface of the side panel abuts the side wall, an assembly gap will inevitably exist between the side panel and the side wall. When the panel is subjected to torsion from the drive shaft, the cover will rotate to a certain extent, affecting the overall assembly accuracy of the switch. The cover will also be more likely to deform, further affecting the transmission accuracy of the entire system. However, by having the protrusions on the side panel abut the side wall over a small area, not only does this gap between the protrusions and the side wall decrease, but it also prevents the cover from deforming under force, thereby improving the transmission accuracy of the entire system.

[0026] In some embodiments, the switch body further includes a status display window, a status indicator light and a manual-automatic switching switch, and the outer cover is provided with avoidance openings at positions facing the status display window, the status indicator light and the manual-automatic switching switch.

[0027] Through the above solution, the user can directly observe the corresponding indication position on the switch body through the avoidance opening, or activate the corresponding switch button on the switch body through the avoidance opening without removing the outer cover, so it is more convenient to use.

[0028] In the embodiment of the present application, an outer cover, a first gear and a drive shaft are added to the outside of the switch body, and the drive shaft portion can extend out of the power distribution cabinet. When the user uses the switch, the user can manually drive the switch body through the drive shaft to complete the switch state conversion without opening the power distribution cabinet, thereby facilitating user operation.

[0029] The above description is only an overview of the technical solutions of the embodiments of the present application. In order to more clearly understand the technical means of the embodiments of the present application, they can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0031] FIG1 is a schematic diagram of the overall structure of a dual power conversion switch provided in an embodiment of the present application.

[0032] FIG2 is a schematic structural diagram of a switch body provided in an embodiment of the present application.

[0033] FIG3 is a schematic structural diagram of the assembly of the outer cover and the first gear provided in an embodiment of the present application.

[0034] FIG4 is an exploded schematic diagram of the assembly of the outer cover and the first gear provided in an embodiment of the present application.

[0035] FIG5 is a schematic structural diagram of the assembly of the outer cover and the limiting member provided in an embodiment of the present application.

[0036] FIG6 is a schematic structural diagram of a pillar provided in an embodiment of the present application.

[0037] Explanation of the reference numerals: 100, switch body; 110, housing; 120, handle gear; 130, side wall; 140, status display window; 150, status indicator light; 160, manual-automatic switching switch; 200, outer cover; 210, panel; 220, side panel; 221, protrusion; 230, limiting groove; 240, avoidance opening; 300, first gear; 310, first meshing tooth; 320, second meshing tooth; 400, drive shaft; 340, inner hole; 420, socket; 500, second gear; 600, limiting member; 610, limiting protrusion; 700, pillar; 710, external threaded section; 720, threaded hole; 800, supporting portion. DETAILED DESCRIPTION

[0038] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0040] The terms "comprises", "comprising" and "having" and any variations thereof in the specification, claims and drawings of this application are intended to cover but not exclude other contents. The word "a" or "an" does not exclude the presence of a plurality.

[0041] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiment" in various places in the specification does not necessarily refer to the same embodiment, nor does it necessarily refer to independent or alternative embodiments that are mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0042] The term "and / or" in this document simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. Additionally, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0043] The directional terms appearing in the following description refer to the directions shown in the drawings and do not limit the specific structure of the dual power conversion switch of the present application. For example, in the description of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings and are only for the convenience of describing the present application and simplifying the description. They do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present application.

[0044] In addition, the terms "first", "second", etc. in the description and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order, and may explicitly or implicitly include one or more such features.

[0045] In the description of this application, unless otherwise specified, "plurality" means more than two (including two), and similarly, "multiple groups" means more than two (including two).

[0046] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood broadly. For example, "connected" or "connected" in a mechanical structure can refer to a physical connection. For example, a physical connection can be a fixed connection, such as a fixed connection via a fixing member, such as a screw, bolt, or other fixing member. A physical connection can also be a detachable connection, such as a mutual snap-fit ​​connection. A physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. In addition to referring to a physical connection, "connected" or "connected" in a circuit structure can also refer to an electrical connection or a signal connection. For example, it can be a direct connection, i.e., a physical connection, or an indirect connection through at least one intermediate element, as long as the circuit is interconnected. It can also refer to internal communication between two elements. A signal connection can refer to a signal connection through a circuit or a signal connection through a media medium, such as radio waves. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0047] An embodiment of the present application provides a dual power transfer switch. FIG1 is a schematic diagram of the overall structure of a dual power transfer switch provided in an embodiment of the present application. FIG2 is a schematic diagram of the structure of a switch body provided in an embodiment of the present application. FIG3 is a schematic diagram of the structure of the outer cover and first gear assembly provided in an embodiment of the present application. FIG4 is an exploded schematic diagram of the outer cover and first gear assembly provided in an embodiment of the present application.

[0048] With reference to Figures 1, 2, 3, and 4, the dual power conversion switch provided in the embodiment of the present application includes a switch body 100, an outer cover 200, a first gear 300, and a drive shaft 400. The switch body 100 includes a housing 110 and a handle gear 120 partially exposed from the housing 110. The outer cover 200 is connected to the switch body 100 and at least partially covers the outside of the side where the handle gear 120 is located; the first gear 300 is rotatably connected to the outer cover 200 and is located on a side of the outer cover 200 close to the handle gear 120 and meshes with the handle gear 120; the drive shaft 400 is rotatably connected to the outer cover 200 and is drivingly connected to the first gear 300 for driving the first gear 300 to rotate. One end of the drive shaft 400 protrudes from the side of the outer cover 200 away from the handle gear 120 for extending out of the power distribution cabinet.

[0049] As shown in FIG2 , the switch body 100 is the same as the switch body 100 of the dual power conversion switch in the related art, and will not be further described in the embodiment of the present application.

[0050] As shown in Figure 3, the outer cover 200 is connected to the switch body 100. Its function in this application is to connect the first gear 300 and the drive shaft 400. Once the relative positions of the outer cover 200 and the switch body 100 are fixed, the positions of the first gear 300 and the drive shaft 400 are fixed. The outer cover 200 can be a thin-walled component. It can be in the form of a plate, covering only the exterior of the side where the handle gear 120 is located, or it can have other shapes. For example, it can be bent into a shell with a housing cavity, with multiple shell walls capable of covering multiple surfaces of the switch body 100.

[0051] The first gear 300 can be a conventional cylindrical gear, or a bevel gear or other special-shaped gear, and can be specifically determined according to the shape and position of the handle gear 120 on the switch body 100 in the related art and the installation space of the first gear 300.

[0052] For example, if the handle gear 120 in the related art is a cylindrical gear, the first gear 300 can also be a cylindrical gear. In this case, the first gear 300 must be parallel to the gear axis of the handle gear 120 during assembly to ensure that the first gear 300 is meshed with the handle gear 120.

[0053] In addition, in the case where the handle gear 120 in the related art is a cylindrical gear, the first gear 300 may also not be a cylindrical gear, and the teeth on the first gear 300 that engage with the handle gear 120 may also be located on the end face of the first gear 300. At this time, when the first gear 300 is assembled, the axial intersection angle with the handle gear 120 is 90 degrees.

[0054] The specific structure of the first gear 300 and its specific meshing form with the handle gear 120 will not be listed in detail in the present embodiment. It is understandable that based on the above structure, the structure of the switch body 100 in the related art does not need to be modified or disassembled, which will not cause the existing product to be eliminated or scrapped, and the cost of technical improvement is relatively low.

[0055] The drive shaft 400 drives the first gear 300 to rotate, which can be direct drive or indirect drive. For example, the drive shaft 400 can be directly connected to the first gear 300 coaxially, so that when the drive shaft 400 rotates, it directly drives the first gear 300 to rotate, so that the first gear 300 drives the handle gear 120 to rotate.

[0056] The drive shaft 400 can drive the first gear 300 to rotate indirectly. For example, the drive shaft 400 can be coaxially connected to another gear, and the other gear is engaged with the first gear 300. In this way, when the drive shaft 400 rotates, the first gear 300 can be indirectly driven to rotate through the other gear, so that the first gear 300 drives the handle gear 120 to rotate.

[0057] When the dual power transfer switch is used, a hole may be opened on the door or other side wall 110 of the power distribution cabinet, and only the portion of the drive shaft 400 protruding from the outer cover 200 is extended from the hole.

[0058] When the switch is installed in the power distribution cabinet, if the user wants to manually operate the switch body 100 to change the state of the switch body 100, he only needs to rotate the end of the drive shaft 400 extending outside the power distribution cabinet. The drive shaft 400 can drive the first gear 300 to rotate, and then the handle gear 120 drives the operating mechanism of the switch body 100 to realize the change of the switch state.

[0059] In terms of the ease of use of the switch, after the outer cover 200, the first gear 300 and the drive shaft 400 are installed outside the switch body 100, the user can manually drive the switch body 100 to complete the switch state conversion without opening the distribution cabinet, which is convenient for users.

[0060] From the perspective of safety, after the outer cover 200, the first gear 300 and the drive shaft 400 are installed outside the switch body 100, the user can operate the switch from outside the distribution cabinet. Compared with the related art in which the user inserts the handle into the handle gear 120 to drive the handle gear 120 to rotate, the user's body is farther away from the switch and there is a partition of the distribution cabinet, so the operation is safer.

[0061] From the assembly point of view, since the first gear 300 and the drive shaft 400 are both connected to the outer cover 200, during assembly, the first gear 300 and the drive shaft 400 can be connected to the outer cover 200 first, and then the first gear 300, the drive shaft 400 and the outer cover 200 can be assembled as a whole onto the switch body 100. Users can purchase the assembled first gear 300, the drive shaft 400 and the outer cover 200 as a whole and add it to the existing switch body 100, which is more operable.

[0062] Among the three states of the switch body 100, the rotational position of the first gear 300 in the dual-open state is generally between the position in the normal power-on state and the position in the backup power-on state. Therefore, when the switch body 100 transitions between the three states, the maximum rotation angle of the first gear 300 is the angle from the normal power-on state to the backup power-on state, and generally does not exceed 180 degrees.

[0063] Based on this, as shown in Figures 3 and 4, in some embodiments, the first gear 300 is a sector gear, the first gear 300 has a sector angle A, and the first gear 300 also has a rotation angle B for driving the switch body 100 to switch between the normal power on state and the backup power on state, A≥B.

[0064] When A≥B, the requirement that the first gear 300 drives the switch body 100 to switch between three states can be met, and compared with setting the first gear 300 as a cylindrical gear, the sector gear reduces the material and processing costs of the first gear 300 on the basis of meeting the above conversion requirements.

[0065] In addition to the general shape of the first gear 300 being set to a cylindrical gear or a sector gear, the first gear 300 can also have other structural forms according to the driving connection relationship between the first gear 300 and the drive shaft 400, and the different meshing forms between the first gear 300 and the handle gear 120.

[0066] For example, as shown in Figures 3 and 4, in some embodiments, the first gear 300 includes first meshing teeth 310 and second meshing teeth 320. The first meshing teeth 310 are distributed on the end surface of the first gear 300, and the second meshing teeth 320 are distributed on the circumferential surface of the first gear 300. The handle gear 120 meshes with the first gear 300 via the first meshing teeth 310. The switch also includes a second gear 500, which is rotatably connected to the outer cover 200. The drive shaft 400 is coaxially connected to the second gear 500, and the second gear 500 meshes with the first gear 300 via the second meshing teeth 320. The pitch circle diameter of the second gear 500 is smaller than the pitch circle diameter of the second meshing teeth 320.

[0067] In the above embodiment, the first gear 300 is a special-shaped gear including first meshing teeth 310 and second meshing teeth 320 , and the second meshing teeth 320 are cylindrical gears.

[0068] Because the mechanical transmission relationship between the handle gear 120, the first gear 300, and the second gear 500 in this application is a transmission with relatively low precision requirements, the present application does not impose any specific restrictions on the forming method of the meshing teeth of the first gear 300 and the second gear 500. The meshing teeth on the second gear 500 and the first gear 300 can be formed using methods such as gear shaping, gear hobbing, and sheet metal stamping. In situations where transmission precision and load requirements are not high, and considering economic efficiency, the second gear 500 with a simpler structure can be manufactured using sheet metal stamping to achieve the purpose of saving production costs.

[0069] In the above embodiment, when the drive shaft 400 rotates, it can directly drive the second gear 500 to rotate, and the second gear 500 further drives the first gear 300 to rotate. The rotation of the first gear 300 drives the handle gear 120 to rotate, thereby achieving the purpose of switching the state of the switch body 100.

[0070] In addition, it should be emphasized that in the above solution, since the pitch circle diameter of the second gear 500 is smaller than the pitch circle diameter of the second meshing tooth 320, that is, when the switch is switched, the small gear drives the large gear to rotate, so the mechanism is more labor-saving during user operation.

[0071] FIG5 is a schematic diagram of the structure of the outer cover and the limit member assembly provided in an embodiment of the present application. In conjunction with FIG4 and FIG5 , in some embodiments, the switch further comprises a limit member 600, which is coaxially connected to the drive shaft 400 and / or the first gear 300 and is provided with a limit protrusion 610. The housing 110 is provided with an arcuate limit groove 230, which is coaxially arranged with the drive shaft 400, and the limit protrusion 610 is located within the limit groove 230. When the limit protrusion 610 is located at one end of the limit groove 230, the switch body 100 is in the normal power supply state; when the limit protrusion 610 is located at the other end of the limit groove 230, the switch body 100 is in the backup power supply state.

[0072] The number of the limit member 600 can be only one. In this case, the limit member 600 can be coaxially connected to the drive shaft 400, or coaxially connected to the first gear 300. When the drive shaft 400 is coaxially connected to the first gear 300, the limit member 600 is coaxially connected to the drive shaft 400 and the first gear 300 at the same time.

[0073] There may also be two limiting members 600 , wherein one limiting member 600 is coaxially connected to the first gear 300 , and the other limiting member 600 is coaxially connected to the driving shaft 400 .

[0074] In addition to the number of the limit members 600, the specific materials and structural forms of the limit members 600 can also be various, as long as the limit members 600 can rotate synchronously with the drive shaft 400 or the first gear 300. This embodiment of the present application does not limit this.

[0075] Based on the coaxial connection between the limit member 600 and the drive shaft 400 and / or the first gear 300, when the user rotates the drive shaft 400, the limit member 600 can rotate along with the drive shaft 400 and / or the first gear 300. During the rotation of the limit member 600, the limit protrusion 610 moves in the limit groove 230. When the limit protrusion 610 moves to one end or the other end of the limit groove 230, the limit member 600 can no longer continue to rotate, thereby limiting the rotation of the drive shaft 400. When the drive shaft 400 can no longer continue to rotate, the user can know that the switch body 100 is in the normal power on state or the backup power on state, which is beneficial for the user to know whether the state conversion of the switch body 100 is in place without opening the distribution cabinet.

[0076] In addition, by limiting the extreme position of the rotation of the drive shaft 400 through the limiter 600, it is also possible to prevent the user from rotating the drive shaft 400 too large an angle, thereby causing the meshing relationship between the first gear 300 and the handle gear 120 to fail, and prevent damage to the switch body 100.

[0077] As shown in Figure 4, in some embodiments, a polygonal inner hole 340 is provided on the end surface of the drive shaft 400 protruding from the outer cover 200, and / or the cross-section of the drive shaft 400 protruding from the outer cover 200 is polygonal, and / or the drive shaft 400 protruding from the outer cover 200 is provided with a socket 420 along the direction perpendicular to the axis of the drive shaft 400.

[0078] The above three structures all serve to facilitate the user to operate the drive shaft 400 from outside the cabinet, causing it to rotate and achieve state conversion of the switch body 100. Each of the above three structures can be present on the drive shaft 400 individually, or any of them can be present on the drive shaft 400 simultaneously. For example, in the example shown in FIG4 , a polygonal inner hole 340 is provided on the end surface of the drive shaft 400 protruding from the outer cover 200, and a socket 420 is provided on the end of the drive shaft 400 protruding from the outer cover 200 in a direction perpendicular to the axis of the drive shaft 400.

[0079] The specific principle of the above three structures making user operation convenient is as follows: a polygonal inner hole 340 is provided on the end face of the drive shaft 400 protruding from one end of the outer cover 200. The user can insert a wrench corresponding to the shape of the inner hole 340 or any tool that can be limited by the inner hole 340 into the polygonal inner hole 340, and rotate the tool to rotate the drive shaft 400.

[0080] The cross section of the driving shaft 400 protruding from one end of the outer cover 200 is polygonal. The user can use a wrench to cover the outer circumference of the driving shaft 400 and turn the wrench to drive the driving shaft 400 to rotate.

[0081] The drive shaft 400 protrudes from one end of the outer cover 200 and is provided with a socket 420 along an axial direction perpendicular to the drive shaft 400 . The user can insert any tool into the socket 420 and rotate the tool around the drive shaft 400 to drive the drive shaft 400 to rotate.

[0082] Since the first gear 300, drive shaft 400, and second gear 500 in the above embodiments are all connected to the outer cover 200, the connection between the outer cover 200 and the switch body 100 is particularly important. The strength of this connection directly affects the meshing of the first gear 300 and the handle gear 120. In addition, since the outer cover 200 in this application is a structure that is added to the existing switch body 100, the convenience of the connection between the outer cover 200 and the switch body 100 is also particularly critical.

[0083] Taking the above factors into consideration, the embodiments of the present application propose at least two feasible connection structures between the outer cover 200 and the switch body 100 .

[0084] As shown in FIG. 1 , in some embodiments, the switch includes a support 700 , one end of which is connected to the switch body 100 , and the other end of which is connected to the outer cover 200 , for positioning the outer cover 200 relative to the switch body 100 .

[0085] The support 700 is a columnar structure, which can locate the relative positions of the outer cover 200 and the switch body 100 so that a certain distance is maintained between the outer cover 200 and the switch body 100, thereby forming a certain space between the two to accommodate the first gear 300 and the second gear 500.

[0086] The support 700 can also realize the connection between the outer cover 200 and the switch body 100 , so that the outer cover 200 and the switch body 100 have a certain connection strength to resist the torsion when the driving shaft 400 rotates.

[0087] For example, Figure 6 is a schematic diagram of the structure of a support provided in an embodiment of the present application. In conjunction with Figures 1 and 6, in some feasible embodiments, one end of the support 700 is provided with an externally threaded section 710, and the other end of the support 700 is provided with a threaded hole 720. The externally threaded section 710 is threadedly connected to the switch body 100, and the threaded hole 720 is coaxially arranged with the through hole in the outer cover 200. A screw passes through the through hole in the outer cover 200 and connects to the threaded hole 720 in the support 700.

[0088] The above connection method does not require any connection tools during implementation, or only requires the use of common tools to achieve the connection between the outer cover 200 and the switch body 100, which makes the operation more convenient.

[0089] 1 , in some other feasible embodiments, the switch further includes a support portion 800 , which is formed by bending the outer cover 200 , and an end of the support portion 800 away from the outer cover 200 rests on the switch body 100 and is fixed by screws.

[0090] One end of the support portion 800 abuts against the switch body 100 , and can position the position between the outer cover 200 and the switch body 100 .

[0091] The support portion 800 is fixed to the switch body 100 by screws, thereby indirectly fixing the outer cover 200 to the switch body 100, thereby achieving a connection between the outer cover 200 and the switch body 100, so that there is a certain connection strength between the outer cover 200 and the switch body 100 to resist the torsion when the drive shaft 400 rotates.

[0092] The support portion 800 is formed by bending the outer cover 200 , and its molding method is simpler and easier to process and manufacture.

[0093] For example, the support portion 800 may be L-shaped, with one end connected to the housing 200 and the other end in surface contact with the switch body 100. This arrangement makes the positioning between the support portion 800 and the switch body 100 more stable.

[0094] The above two methods of connecting the outer cover 200 and the switch body 100 through the pillar 700 and connecting the outer cover 200 and the switch body 100 through the support portion 800 can be used together in the same switch or used separately in different switches. Those skilled in the art can choose according to needs.

[0095] 1 , 3 , and 4 , in some embodiments, the outer cover 200 includes a panel 210 and a side panel 220 that are angled with each other. The panel 210 covers the outside of the side where the handle gear 120 is located. The side panel 220 abuts against the side wall 130 of the switch body 100 , and the side wall 130 is adjacent to the wall where the handle gear 120 is located.

[0096] The panel 210 covers the outside of the side where the handle gear 120 is located. Therefore, the panel 210 is close to the handle gear 120. The panel 210 can be used to connect the first gear 300 and the drive shaft 400 and other related components to enable the first gear 300 to engage with the handle gear 120.

[0097] The side plate 220 and the panel 210 form an angle with each other, so that when the drive shaft 400 rotates and applies the torque of the rotation to the panel 210, the side plate 220 can limit the rotation of the panel 210 by abutting against the side wall 110 of the switch body 100, thereby making the relative position between the outer cover 200 and the switch body 100 more stable and less likely to change.

[0098] For example, the side wall 130 forms a 90-degree angle with the wall where the handle gear 120 is located, and the side plate 220 forms a 90-degree angle with the panel 210. The side plate 220 abuts against the side wall 130 of the switch body 100. When the user rotates the drive shaft 400, the side plate 220 abuts against the side wall 130 of the switch body 100 more tightly, thereby further improving the ability of the outer cover 200 to resist the torsional force caused by the rotation of the drive shaft 400.

[0099] However, during the actual manufacturing process, the inventors discovered that if the side panel 220 is flat and its entire surface is in contact with the side wall 130, a large assembly gap is inevitably present between the side panel 220 and the side wall 130. When the panel 210 is subjected to the torsion of the drive shaft 400, the outer cover 200 will rotate and deform to a certain extent, affecting the overall assembly accuracy and transmission accuracy of the switch.

[0100] To solve the above problem, as shown in FIG3 and FIG4 , in some embodiments, a protrusion 221 is provided on one side of the side plate 220 close to the side wall 130 , and the side plate 220 abuts against the side wall 130 through the protrusion 221 .

[0101] The protrusion 221 may be formed by stamping the side plate 220 , thereby saving costs.

[0102] The protrusion 221 on the side plate 220 abuts against the side wall 130 in a small area, which not only helps to reduce the assembly gap between the protrusion 221 and the side wall 130, but also makes the outer cover 200 less likely to be deformed by force, and the transmission accuracy of the entire system is improved.

[0103] 2 and 3 , in some embodiments, the switch body 100 further includes a status display window 140 , a status indicator light 150 , and a manual-automatic switch 160 , and the outer cover 200 is provided with avoidance openings 240 at positions facing the status display window 140 , the status indicator light 150 , and the manual-automatic switch 160 .

[0104] Among them, the status display window 140, the status indicator light 150 and the manual-automatic switching switch 160 on the switch body 100 are the same as or similar to those in the related art, and will not be repeated in the embodiment of the present application.

[0105] The avoidance opening 240 is provided opposite to the status display window 140 , the status indicator light 150 and the manual-automatic switching switch 160 . This arrangement enables the functional areas of the switch to be used normally without being blocked by the outer cover 200 .

[0106] With the above solution, the user can directly observe the corresponding indication position on the switch body 100 through the avoidance opening 240, or activate the corresponding switch button on the switch body 100 through the avoidance opening 240 without removing the outer cover 200, so it is more convenient to use.

[0107] To sum up, in the embodiment of the present application, an outer cover 200, a first gear 300 and a drive shaft 400 are added to the outside of the switch body 100, and the drive shaft 400 can partially extend out of the power distribution cabinet. When the user uses the switch, the switch body 100 can be manually driven by the drive shaft 400 to complete the switch state conversion without opening the power distribution cabinet, which facilitates user operation.

[0108] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are intended to be within the scope of this application and to form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0109] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A dual power conversion switch, characterized in that: include: A switch body, the switch body comprising a housing and a handle gear partially exposed from the housing; An outer cover connected to the switch body and at least partially covering the outside of the handle gear side; A first gear is rotatably connected to the outer cover and is located on a side of the outer cover close to the handle gear and meshes with the handle gear; A drive shaft is rotatably connected to the outer cover and drivingly connected to the first gear, and is used to drive the first gear to rotate. One end of the drive shaft protrudes from a side of the outer cover away from the handle gear, and is used to extend out of the distribution cabinet.

2. The dual power conversion switch according to claim 1, characterized in that: The first gear is a sector gear having a sector angle A. The first gear also has a rotation angle B for driving the switch body to switch between a normal power-on state and a standby power-on state, and A≥B.

3. The dual power conversion switch according to claim 1, characterized in that: The first gear comprises first meshing teeth and second meshing teeth, wherein the first meshing teeth are distributed on an end surface of the first gear, and the second meshing teeth are distributed on a circumferential surface of the first gear; The handle gear is meshed with the first gear through the first meshing teeth; The switch further comprises a second gear, the second gear is rotatably connected to the outer cover, the driving shaft is coaxially connected to the second gear, and the second gear is meshed with the first gear through the second meshing teeth; Wherein, the pitch circle diameter of the second gear is smaller than the pitch circle diameter of the second meshing tooth.

4. The dual power conversion switch according to any one of claims 1 to 3, characterized in that: The switch further comprises a limiter, the limiter is coaxially connected to the drive shaft and / or the first gear, and a limiter protrusion is provided on the limiter; an arc-shaped limiter groove is provided on the housing, the limiter groove is coaxially arranged with the drive shaft, and the limiter protrusion is located in the limiter groove; When the limiting protrusion is located at one end of the limiting groove, the switch body is in a normal power-on state; when the limiting protrusion is located at the other end of the limiting groove, the switch body is in a standby power-on state.

5. The dual power conversion switch according to claim 1, characterized in that: The end surface of the drive shaft protruding from one end of the outer cover is provided with a polygonal inner hole, and / or, The cross section of the drive shaft protruding from one end of the outer cover is polygonal, and / or, The driving shaft protrudes from one end of the outer cover and is provided with an insertion hole along a direction perpendicular to the axis of the driving shaft.

6. The dual power conversion switch according to any one of claims 1 to 3, characterized in that: The switch further comprises a support, one end of which is connected to the switch body, and the other end of which is connected to the outer cover, for locating the relative position of the outer cover and the switch body.

7. The dual power conversion switch according to any one of claims 1 to 3, characterized in that: The switch further comprises a supporting portion, which is formed by bending the outer cover. One end of the supporting portion away from the outer cover abuts against the switch body and is fixed by screws.

8. The dual power conversion switch according to any one of claims 1 to 3, characterized in that: The outer cover comprises a panel and a side panel which are angled with each other, the panel covers the outside of the side where the handle gear is located, the side panel abuts against the side wall of the switch body, and the side wall is adjacent to the wall where the handle gear is located.

9. The dual power conversion switch according to claim 8, characterized in that: A protrusion is provided on one side of the side plate close to the side wall, and the side plate abuts against the side wall through the protrusion.

10. The dual power conversion switch according to claim 1, characterized in that: The switch body also includes a status display window, a status indicator light and a manual-automatic switching switch, and the outer cover is provided with avoidance openings at positions facing the status display window, the status indicator light and the manual-automatic switching switch.

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