Linkage mechanism applied to switch device and switch device

Abstract

The utility model relates to low voltage electrical apparatus technical field especially relates to a linkage mechanism and switch device for switch device. The switch device includes main switch module and precharge module, and the main switch module includes first open and close handle, and the precharge module includes second open and close handle and precharge resistance, and precharge resistance is provided in parallel with main switch module. The linkage mechanism includes driving part, driven part and transmission assembly, wherein, driving part is connected to first open and close handle, driven part is connected to second open and close handle, and transmission assembly is connected between driving part and driven part. Through the linkage mechanism makes first open and close handle can drive precharge module to carry out the switching on and off, thereby makes precharge group to be in the loop can be according to the working condition of main switch module in time and opens and disconnects.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical technology, and in particular to a linkage mechanism and a switching device applied to a switching device. Background Technology

[0002] For existing switching devices, before closing the circuit, there may be loads such as large capacitors connected in the switching circuit. Therefore, there is a high voltage difference between the input and output terminals of the switching device. If the circuit is closed directly, a large inrush current will occur, which will cause damage to the switch and system safety accidents.

[0003] To address the issue of high inrush current during switching operations, some switches have incorporated a pre-charge circuit. This circuit balances the voltage difference between the input and output terminals of the main switch when the switch is open. When the main switch closes, the pre-charge circuit must be disconnected. Currently, the connection and disconnection of the pre-charge circuit are either manual or automatically controlled by a host computer according to a pre-set program. Manual control increases the workload for operators and is prone to delays. Remote control via a host computer suffers from delayed response and errors in circuit identification, leading to incorrect control of the pre-charge circuit.

[0004] Therefore, how to achieve timely connection and disconnection of the precharge circuit has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] The first objective of this invention is to provide a linkage mechanism for a switching device, in order to solve the technical problem that the precharge circuit of an existing switching device with a precharge circuit cannot be connected and disconnected in a timely manner.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A linkage mechanism for a switching device, the switching device including a main switch module and a pre-charge module, the main switch module including a first opening and closing handle, the pre-charge module including a second opening and closing handle and a pre-charge resistor, the pre-charge resistor being arranged in parallel with the main switch module; The linkage mechanism includes a driving member, a driven member, and a transmission assembly, wherein the driving member is connected to the first opening and closing handle, the driven member is connected to the second opening and closing handle, and the transmission assembly is connected between the driving member and the driven member.

[0007] In some embodiments, the active component is provided with a first linkage hole, and the first linkage hole is fitted onto the first opening and closing handle; And / or, the driven member is provided with a second linkage hole, which is fitted onto the second opening and closing handle.

[0008] In some embodiments, the first opening / closing handle has a first open position, a tripped position, and a first closed position; The first linkage hole has a reserved space for the movement of the first opening and closing handle, or the second linkage hole has a reserved space for the movement of the second opening and closing handle. The free travel space is configured such that when the first opening / closing handle moves from the first closing position to the tripping position, the second opening / closing handle does not move synchronously.

[0009] In some embodiments, the transmission assembly includes a first rack, a second rack, and a plurality of gears, wherein the first rack is fixed to the driving member, the second rack is fixed to the driven member, and the plurality of gears are meshed between the first rack and the second rack.

[0010] In some embodiments, the plurality of gears includes a first gear, a second gear, and a transition gear, wherein the first gear meshes with the first rack, the second gear meshes with the second rack, and the transition gear meshes between the first gear and the second gear.

[0011] In some embodiments, the linkage mechanism further includes a first guide rod, and the driving member is slidably disposed on the first guide rod along the length direction of the first guide rod; And / or, the linkage mechanism further includes a second guide rod, and the driven member is slidably disposed on the second guide rod along the length direction of the second guide rod.

[0012] In some embodiments, the linkage mechanism further includes a mounting frame, on which the driving member, the driven member, and the transmission assembly are all mounted; The relative positions of the mounting frame, the main switch body of the main switch module, and the precharge body of the precharge module are fixed.

[0013] In some embodiments, the mounting frame covers the precharge module.

[0014] In some embodiments, the mounting frame is provided with guide sliding holes, and the active component is slidably disposed within the guide sliding holes.

[0015] The second objective of this utility model is to provide a switching device, which includes a main switch module, a precharge module, and the linkage mechanism described in any one of the above.

[0016] The beneficial effects of this utility model are: This utility model provides a linkage mechanism and a switching device for use in a switching device. The switching device includes a main switch module and a pre-charge module. The main switch module includes a first opening / closing handle, and the pre-charge module includes a second opening / closing handle and a pre-charge resistor. The pre-charge resistor is connected in parallel with the main switch module. The linkage mechanism includes a driving member, a driven member, and a transmission assembly. The driving member is connected to the first opening / closing handle, the driven member is connected to the second opening / closing handle, and the transmission assembly is connected between the driving member and the driven member.

[0017] Since the linkage mechanism is connected between the first opening and closing handle of the main switch module and the second opening and closing handle of the precharge module, the first opening and closing handle can drive the second opening and closing handle to move during the movement, thereby controlling the precharge module to open and close, so that the precharge module can be connected and disconnected in a timely manner according to the working status of the main switch module. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 A three-dimensional schematic diagram of the linkage mechanism provided in this embodiment of the utility model applied to a switching device; Figure 2 A simplified structural diagram of the switching device provided in this embodiment of the present invention when the main switch module is in the open state; Figure 3 A simplified structural diagram of the switching device provided in this embodiment of the present invention when the main switch module is in the closed state; Figure 4 A schematic diagram showing the connection between the linkage mechanism and the pre-charge module provided in this embodiment of the utility model; Figure 5 A three-dimensional schematic diagram of the linkage mechanism provided in an embodiment of this utility model; Figure 6 A front view of the switching device provided in this embodiment of the utility model when the main switch module is in the tripped state after switching from the closed state; Figure 7 for Figure 6 A schematic diagram showing the positions of the second opening / closing handle and the driven member in the indicated state; Figure 8 This is a front view of the switching device provided in Embodiment 1 of the present invention when the main switch module switches from the tripped state to the open state; Figure 9 for Figure 8 The diagram shows the movement of the second opening / closing handle and the driven component during the process. Figure 10 The main view of the switching device provided in Embodiment 1 of this utility model when the main switch module switches from the open state to the closed state; Figure 11 for Figure 10 The diagram shows the movement of the second opening / closing handle and the driven member during the process.

[0020] icon: 1-Main switch module; 11-First opening / closing handle; 12-Main switch body; 2-Pre-charge module; 21-Second opening and closing handle; 22-Pre-charge resistor; 23-Pre-charge main body; 3-Linkage mechanism; 31-Driving component; 311-First linkage hole; 32-Driven component; 321-Second linkage hole; 33-Transmission assembly; 331-First rack; 332-Second rack; 333-First gear; 334-Second gear; 335-Transition gear; 34-First guide rod; 35-Second guide rod; 36-Mounting frame; 361-Guide sliding hole; 362-Allowing hole. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] It should be noted that in the description of this utility model, 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. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] It should be noted that in the description of this utility model, the terms "connection" and "installation" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or a connection through an intermediate medium; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] For switches equipped with a pre-charge circuit, the pre-charge circuit needs to be disconnected when the main switch is closed. Currently, the connection and disconnection of the pre-charge circuit are either done manually or automatically controlled by a host computer according to a pre-set program. Manual control of the pre-charge circuit increases the workload of staff and is prone to delays. Remote control of the pre-charge circuit by a host computer suffers from delayed response and errors in identification, leading to incorrect control of the pre-charge circuit.

[0025] Based on this, the first aspect of this application provides a linkage mechanism 3 applied to a switching device, referring to... Figures 1 to 4 The switching device includes a main switch module 1 and a pre-charge module 2. The main switch module 1 includes a first opening and closing handle 11, and the pre-charge module 2 includes a second opening and closing handle 21 and a pre-charge resistor 22. The pre-charge resistor 22 is connected in parallel with the main switch module 1. The linkage mechanism 3 includes a driving member 31, a driven member 32, and a transmission assembly 33. The driving member 31 is connected to the first opening and closing handle 11, the driven member 32 is connected to the second opening and closing handle 21, and the transmission assembly 33 is connected between the driving member 31 and the driven member 32.

[0026] It should be noted that the main switch module 1 has an open state, a tripped state, and a closed state. In each state, the first opening / closing handle 11 is in the first open position, the tripped position, and the first closed position, respectively. The precharge module 2 has an open state and a closed state. In these two states, the second opening / closing handle 21 is in the second open position and the second closed position, respectively. When the operating state of the main switch module 1 changes, the position of the first opening / closing handle 11 also changes. Simultaneously, the first opening / closing handle 11 drives the second opening / closing handle 21 to move through the linkage mechanism 3, thereby controlling the operating state of the precharge module 2 to change accordingly.

[0027] When the main switch module 1 is in the closed or tripped state, the precharge module 2 is in the open state, and correspondingly, the circuit containing the precharge resistor 22 is in the disconnected state. When the main switch module 1 is in the open state, the precharge module 2 is in the closed state, and correspondingly, the circuit containing the precharge resistor 22 is in the connected state.

[0028] like Figure 2 As shown, during the process of switching the main switch module 1 from the closed or tripped state to the open state, the first opening / closing handle 11 drives the pre-charge module 2 from the open state to the closed state through the linkage mechanism 3; when the main switch module 1 is in the open state, the pre-charge module 2 is in the closed state, and the pre-charge resistor 22 is connected in series in the main circuit to balance the voltage difference across the main switch module 1. Figure 3As shown, during the process of the main switch module 1 switching from the open state to the closed state, the first opening / closing handle 11 drives the precharge module 2 to switch from the closed state to the open state through the linkage mechanism 3. When the main switch module 1 is in the closed state, the precharge module 2 is in the open state, thereby disconnecting the circuit where the precharge resistor 22 is located.

[0029] In summary, the linkage mechanism 3 provided in this application is connected between the first opening / closing handle 11 of the main switch module 1 and the second opening / closing handle 21 of the precharge module 2. Through the linkage mechanism 3, the first opening / closing handle 11 can drive the precharge module 2 to open and close, thus enabling the precharge module 2 to be connected and disconnected promptly according to the operating state of the main switch module 1. This ensures, on the one hand, that the precharge module 2 can effectively balance the voltage difference across the main switch module 1, avoiding damage to the switch and system safety accidents caused by large inrush currents when the main switch module 1 is closed; on the other hand, it ensures that the precharge module 2 can be disconnected promptly after the main switch module 1 is closed.

[0030] Continue to refer to Figure 1 In this embodiment, the main switch module 1 includes a main switch body 12, a contact system disposed within the main switch body 12, and a first opening / closing handle 11. The first opening / closing handle 11 is rotatably disposed on the main switch body 12 and is connected to the contact system via a transmission connection. By moving the first opening / closing handle 11, the connection and disconnection of the contact system can be controlled. (Refer to...) Figures 2 to 4 The precharge module 2 includes a precharge body 23, a precharge resistor 22 disposed in the precharge body 23, and a second opening and closing handle 21. The second opening and closing handle 21 is slidably disposed on the precharge body 23. By moving the second opening and closing handle 21, the connection and disconnection of the circuit in which the precharge resistor 22 is located can be controlled.

[0031] In some embodiments, refer to Figure 1 The active component 31 is provided with a first linkage hole 311, which is fitted onto the first opening and closing handle 11. The first linkage hole 311 can be a through hole or a blind hole, and the connection between the active component 31 and the first opening and closing handle 11 is realized through the first linkage hole 311.

[0032] In some embodiments, refer to Figure 4 The driven member 32 is provided with a second linkage hole 321, which is fitted onto the second opening and closing handle 21. The second linkage hole 321 can be a through hole or a blind hole, and the connection between the driven member 32 and the second opening and closing handle 21 is realized through the second linkage hole 321.

[0033] As an optional embodiment, the first linkage hole 311 is provided with a free travel space for the first opening / closing handle 11 to move, or the second linkage hole 321 is provided with a free travel space for the second opening / closing handle 21 to move. This free travel space is configured such that the second opening / closing handle 21 does not move synchronously when the first opening / closing handle 11 moves from the first closed position to the tripped position.

[0034] It should be noted that the main switch module 1 provided in this application can directly switch from the closed state to the open state, from the closed state to the tripped state, from the tripped state to the open state, and from the open state to the closed state, but it cannot directly switch from the open state to the tripped state and from the tripped state to the closed state.

[0035] By reserving free travel space in the first linkage hole 311 or the second linkage hole 321, the state of the precharge module 2 does not change and remains in the open state when the main switch module 1 switches from the closed state to the tripped state; while when the main switch module 1 switches from the tripped state to the open state, the precharge module 2 switches from the open state to the closed state.

[0036] In this embodiment, a space is reserved in the second linkage hole 321 for the movement of the second opening / closing handle 21. Of course, in other embodiments, a space can be reserved in the first linkage hole 311 for the movement of the first opening / closing handle 11. The transmission principle of the two structures described above is the same, and both are designed to ensure that the state of the precharge module 2 does not change when the main switch module 1 switches from the closed state to the tripped state.

[0037] In some embodiments, continue to refer to Figure 1 The transmission assembly 33 includes a first rack 331, a second rack 332, and a plurality of gears. The first rack 331 is fixed to the driving member 31, the second rack 332 is fixed to the driven member 32, and the plurality of gears are meshed between the first rack 331 and the second rack 332. "A plurality of" refers to one, two, three, or more than three gears. The number of gears is adaptively selected according to transmission requirements (e.g., the distance between the first opening / closing handle 11 and the second opening / closing handle 21).

[0038] Using the above scheme, when the state of the main switch module 1 changes, the first opening and closing handle 11 drives the driving member 31 and the first rack 331 to move up and down. The first rack 331 drives the second rack 332 and the driven member 32 to move up and down through several gears. The driven member 32 then drives the second opening and closing handle 21 to move up and down, thereby changing the state of the precharge module 2 accordingly.

[0039] In this embodiment, the plurality of gears includes a first gear 333, a second gear 334, and a transition gear 335. The first gear 333 meshes with the first rack 331, the second gear 334 meshes with the second rack 332, and the transition gear 335 meshes between the first gear 333 and the second gear 334.

[0040] In some embodiments, to limit the movement trajectory of the active member 31, the linkage mechanism 3 further includes a first guide rod 34, on which the active member 31 is slidably disposed along the length of the first guide rod 34. The relative positions of the first guide rod 34, the main switch body 12, and the pre-charge body 23 are fixed. The number of first guide rods 34 can be one or more. In this embodiment, there are two first guide rods 34. The active member 31 is provided with a first guide hole corresponding to the position of each first guide rod 34, and the first guide hole is slidably fitted onto the corresponding first guide rod 34.

[0041] Optionally, the first guide rod 34 is mounted on the main switch body 12; or, the first guide rod 34 is mounted on the pre-charge body 23; or, the first guide rod 34 is mounted in the installation area of ​​the switch device. All three mounting methods of the first guide rod 34 can achieve the purpose of fixing the relative positions of the first guide rod 34, the main switch body 12, and the pre-charge body 23.

[0042] In some embodiments, to limit the movement trajectory of the driven member 32, the linkage mechanism 3 further includes a second guide rod 35, on which the driven member 32 is slidably disposed along the length of the second guide rod 35. The relative positions of the second guide rod 35, the main switch body 12, and the pre-charge body 23 are fixed. The number of second guide rods 35 can be one or more. In this embodiment, there are two second guide rods 35. The driven member 32 is provided with a second guide hole corresponding to the position of each second guide rod 35, and the second guide hole is slidably fitted onto the corresponding second guide rod 35.

[0043] Optionally, the second guide rod 35 is mounted on the main switch body 12; or, the second guide rod 35 is mounted on the pre-charge body 23; or, the second guide rod 35 is mounted in the installation area of ​​the switch device. All three mounting methods of the second guide rod 35 can achieve the purpose of fixing the relative positions of the second guide rod 35, the main switch body 12, and the pre-charge body 23.

[0044] Reference Figure 5In some embodiments, the linkage mechanism further includes a mounting frame 36, on which the driving member 31, the driven member 32, and the transmission assembly 33 are all mounted; the relative positions of the mounting frame 36, the main switch body 12, and the pre-charge body 23 are fixed. The mounting frame 36 is provided so that the linkage mechanism 3 forms a whole, which facilitates the disassembly and installation of the linkage mechanism 3.

[0045] Optionally, the mounting frame 36 is mounted on the main switch body 12; or, the mounting frame 36 is mounted on the pre-charge body 23; or, the mounting frame 36 is mounted in the installation area of ​​the switch device. All three mounting methods of the mounting frame 36 can achieve the purpose of fixing the relative positions of the mounting frame 36, the main switch body 12, and the pre-charge body 23.

[0046] Reference Figure 4 and Figure 5 In some embodiments, the mounting frame 36 covers the precharge module 2. The mounting frame 36 not only supports the components of the linkage mechanism 3, but also protects the precharge module 2. In addition, the precharge body 23 can be fixed to the mounting frame 36 with bolts, and the precharge module 2 can be fixed to the main switch body 12 or a predetermined installation position by the mounting frame 36.

[0047] Furthermore, the mounting frame 36 includes a mounting cover, and the driven member 32 and the pre-charge module 2 are both located inside the mounting cover; the mounting frame 36 is provided with a clearance hole 362 connecting the inner and outer sides of the mounting cover, and the second rack 332 is located on the outer side of the mounting cover and connected to the driven member 32 through the clearance hole 362.

[0048] Continue to refer to Figure 5 In some embodiments, the mounting frame 36 is provided with a guide hole 361, and the active member 31 is slidably disposed within the guide hole 361. The guide hole 361 can limit the movement trajectory of the active member 31.

[0049] In this embodiment, the two oppositely arranged hole walls of the guide sliding hole 361 (i.e. Figure 5 The upper and lower holes in the frame 36 are respectively provided with a first mounting hole for each first guide rod 34. The two ends of each first guide rod 34 are respectively inserted into the corresponding first mounting hole, so that the first guide rod 34 is installed on the mounting frame 36.

[0050] In this embodiment, the mounting frame 36 has a second mounting hole corresponding to each second guide rod 35, and both ends of each second guide rod 35 are inserted into the corresponding second mounting hole; the gear shafts of each gear are rotatably mounted on a wall plate of the mounting frame 36 near the second opening and closing handle 21. The second guide rods 35 and each gear are mounted on the mounting frame 36 through the above structure.

[0051] In summary, the working principle of the linkage mechanism provided in this embodiment is as follows: Figure 6 The main view of the switching device when the main switch module 1 is in the tripped state. Figure 7 A schematic diagram showing the positions of the second opening / closing handle 21 and the driven component 32 when the main switch module 1 is in the tripped state after switching from the closed state. Figure 8 The main view of the switching device when the main switch module 1 switches from the tripped state to the open state (i.e., the tripped state). Figure 9 for Figure 8 The diagram shows the movement of the second opening / closing handle 21 and the driven member 32 during the process. Figure 10 The main view of the switching device when the main switch module 1 switches from the open state to the closed state. Figure 11 for Figure 10 The diagram shows the movement of the second opening / closing handle 21 and the driven member 32 during the process. Reference Figure 6 and Figure 7 When the main switch module 1 is in the tripped state after switching from the closed state, the precharge module 2 is in the open state. Correspondingly, the first opening and closing handle 11 is in the tripped position (this tripped position is switched from the first closed position), the second opening and closing handle 21 is in the second open position, and the precharge circuit is in the disconnected state. At this time, the second opening and closing handle 21 is in contact with the lower hole wall of the second linkage hole 321, and there is a free travel space between the second opening and closing handle 21 and the upper hole wall of the second linkage hole 321. Reference Figure 8 and Figure 9 During the process of moving the first opening and closing handle 11 downward from the tripped position to the first open position (i.e., the tripped position), the driven member 32 moves upward and drives the second opening and closing handle 21 upward, so that the second opening and closing handle 21 moves from the second open position to the second closed position; when the first opening and closing handle 11 moves to the first open position, the second opening and closing handle 21 moves to the second closed position. At this time, the main switch module 1 is in the open state (i.e., the tripped state), the precharge module 2 is in the closed state, and the precharge circuit is in the connected state.

[0052] Reference Figure 10 and Figure 11 During the process of moving the first opening / closing handle 11 upward from the first open position to the first closed position: When the first opening and closing handle 11 moves from the first open position to the tripped position, the follower 32 moves downward. Since there is a free travel space between the second opening and closing handle 21 and the upper hole wall of the second linkage hole 321 at this time, the second opening and closing handle 21 does not move, and the precharge module 2 is still in the closed state. When the first opening / closing handle 11 moves to the tripped position (this tripped position is switched from the first open position), the second opening / closing handle 21 contacts the upper wall of the second linkage hole 321. It should be noted that although the state of the switch cannot be switched from the open state to the tripped state, the position of the handle can move from the open position to the tripped position, and the two are not contradictory. When the first opening and closing handle 11 continues to move from the tripped position to the first closed position, the driven member 32 drives the second opening and closing handle 21 to move downward, so that the second opening and closing handle 21 moves from the second closed position to the second open position; When the first opening and closing handle 11 moves to the first closing position, the main switch module 1 is in the closed state, the second opening and closing handle 21 is in the second opening position, the pre-charge module 2 is in the opening state, and the pre-charge circuit is in the disconnected state.

[0053] When the main switch module 1 is in the closed state, it can be opened or tripped by moving the first opening / closing handle 11 downwards. Its movement process is similar to... Figure 10 and Figure 11 The directions of motion shown are opposite, as detailed below: When the first opening and closing handle 11 moves from the first closing position to the tripping position, the follower 32 moves upward. Since there is a free travel space between the second opening and closing handle 21 and the lower hole wall of the second linkage hole 321 at this time, the second opening and closing handle 21 does not move, and the precharge module 2 is still in the open state. When the first opening and closing handle 11 moves to the disengaged position, the second opening and closing handle 21 contacts the lower hole wall of the second linkage hole 321; When the first opening and closing handle 11 continues to move from the tripped position to the first open position, the driven member 32 drives the second opening and closing handle 21 to move upward, so that the second opening and closing handle 21 moves from the second open position to the second closed position; When the first opening and closing handle 11 moves to the first open position, the main switch module 1 is in the open state, the second opening and closing handle 21 is in the second closed position, the precharge module 2 is in the closed state, and the precharge circuit is in the connected state.

[0054] A second aspect of this application provides a switching device, referring to... Figures 1 to 11 The switching device includes a main switch module 1, a precharge module 2, and a linkage mechanism 3 as described in any of the above embodiments.

[0055] As described above, this switching device adds a linkage mechanism 3 between the main switch module 1 and the pre-charge module 2, allowing the operating state of the pre-charge module 2 to switch according to the operating state of the main switch module 1. This ensures the timeliness of the pre-charge module 2's state switching, thereby avoiding damage to the switch and system safety accidents caused by the inrush current generated when the main switch is closed. Simultaneously, it ensures that the circuit containing the pre-charge resistor 22 is promptly disconnected after the main switch module 1 is closed. The technical effects of this switching device are described above and will not be repeated here.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A linkage mechanism applied to a switching device, characterized in that, The switching device includes a main switch module (1) and a pre-charge module (2). The main switch module (1) includes a first opening and closing handle (11), and the pre-charge module (2) includes a second opening and closing handle (21) and a pre-charge resistor (22). The pre-charge resistor (22) is connected in parallel with the main switch module (1). The linkage mechanism includes an active component (31), a driven component (32), and a transmission assembly (33). The active component (31) is connected to the first opening and closing handle (11), the driven component (32) is connected to the second opening and closing handle (21), and the transmission assembly (33) is connected between the active component (31) and the driven component (32).

2. The linkage mechanism applied to a switching device according to claim 1, characterized in that, The active component (31) is provided with a first linkage hole (311), and the first linkage hole (311) is fitted onto the first opening and closing handle (11); And / or, the driven member (32) is provided with a second linkage hole (321), which is fitted onto the second opening and closing handle (21).

3. The linkage mechanism applied to a switching device according to claim 2, characterized in that, The first opening and closing handle (11) has a first open position, a trip position and a first closed position; The first linkage hole (311) has a reserved space for the first opening and closing handle (11) to move, or the second linkage hole (321) has a reserved space for the second opening and closing handle (21) to move. The free travel space is configured such that when the first opening / closing handle (11) moves from the first closing position to the tripping position, the second opening / closing handle (21) does not move synchronously.

4. The linkage mechanism applied to a switching device according to claim 1, characterized in that, The transmission assembly (33) includes a first rack (331), a second rack (332), and a plurality of gears, wherein the first rack (331) is fixed on the driving member (31), the second rack (332) is fixed on the driven member (32), and the plurality of gears are meshed between the first rack (331) and the second rack (332).

5. The linkage mechanism applied to a switching device according to claim 4, characterized in that, The plurality of gears includes a first gear (333), a second gear (334), and a transition gear (335), wherein the first gear (333) meshes with the first rack (331), the second gear (334) meshes with the second rack (332), and the transition gear (335) meshes between the first gear (333) and the second gear (334).

6. The linkage mechanism applied to a switching device according to claim 1, characterized in that, The linkage mechanism (3) further includes a first guide rod (34), and the active member (31) is slidably disposed on the first guide rod (34) along the length direction of the first guide rod (34); And / or, the linkage mechanism further includes a second guide rod (35), and the driven member (32) is slidably disposed on the second guide rod (35) along the length direction of the second guide rod (35).

7. The linkage mechanism applied to a switching device according to claim 1, characterized in that, The linkage mechanism also includes a mounting frame (36), on which the driving component (31), driven component (32) and transmission assembly (33) are all mounted; The relative positions of the mounting frame (36), the main switch body (12) of the main switch module (1), and the precharge body (23) of the precharge module (2) are fixed.

8. The linkage mechanism applied to a switching device according to claim 7, characterized in that, The mounting frame (36) covers the precharge module (2).

9. The linkage mechanism applied to a switching device according to claim 7, characterized in that, The mounting frame (36) is provided with a guide slide hole (361), and the active component (31) is slidably disposed in the guide slide hole (361).

10. A switching device, characterized in that, It includes a main switch module (1), a precharge module (2), and a linkage mechanism as described in any one of claims 1 to 9.

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