Handle operating assembly of a disconnector and disconnector

Abstract

The application relates to the technical field of low-voltage electrical apparatus, in particular to a handle operating assembly of a disconnecting switch and the disconnecting switch, which comprises a handle shaft and a switch operating shaft; a first plug-in structure is arranged at the first end of the handle shaft, and a second plug-in structure matched with the first plug-in structure is arranged at the end of the switch operating shaft; the first plug-in structure and the second plug-in structure are at least partially overlapped in the direction perpendicular to the axis of the handle shaft; and the rotating handle drives the switch operating shaft to rotate through the handle shaft. The application can effectively improve the cooperation stability of the handle shaft and the switch operating shaft and realize the improvement of transmission reliability.

Description

Technical Field

[0001] This application relates to the field of low-voltage electrical technology, and more specifically, to a handle operating assembly for a disconnecting switch and a disconnecting switch. Background Technology

[0002] In existing technologies, disconnecting switches are typically operated via a handle-operated assembly. This assembly generally includes a rotary handle, a handle shaft, and a switch operating shaft for driving the switch body. In practical applications, the connection structure between the handle shaft and the switch operating shaft suffers from insufficient connection strength and poor fit stability, leading to loosening, slippage, or unstable transmission during operation, thus affecting the operational reliability and service life of the disconnecting switch. Therefore, there is an urgent need to improve the existing connection structure between the handle shaft and the switch operating shaft to enhance its connection stability and transmission reliability. Utility Model Content

[0003] The purpose of this application is to provide a handle operating assembly for a disconnecting switch and a disconnecting switch, which can effectively improve the stability of the fit between the handle shaft and the switch operating shaft, thereby improving the reliability of the transmission.

[0004] The embodiments of this application are implemented as follows:

[0005] On one hand, this application provides a handle operation assembly for a disconnecting switch, including a handle shaft and a switch operation shaft; a first end of the handle shaft is provided with a first plug-in structure, and the end of the switch operation shaft is provided with a second plug-in structure that cooperates with the first plug-in structure; the first plug-in structure and the second plug-in structure at least partially overlap in projection in the direction perpendicular to the axis of the handle shaft; the rotating handle drives the switch operation shaft to rotate through the handle shaft.

[0006] As an optional implementation, the first plug-in structure includes a first plug-in key and a first slot; the second plug-in structure includes a second plug-in key and a second slot; the first plug-in key is inserted into the second slot, and the second plug-in key is inserted into the first slot.

[0007] As an optional implementation, the central axis of the handle shaft coincides with the central axis of the switch operation shaft; at least two first plug keys and at least two second plug keys are arranged alternately around the central axis.

[0008] As an optional implementation, the first slot is located between two adjacent first plug keys, and the second slot is located between two adjacent second plug keys; the first plug keys have a first abutting surface on both sides of the handle shaft extension direction, and the second plug keys have a second abutting surface on both sides of the handle shaft extension direction; the first abutting surface and the second abutting surface are in contact.

[0009] As an optional implementation, it also includes a rotary handle and a handle panel, the handle panel having a through hole; the handle shaft passing through the through hole, the second end of the handle shaft being located on both sides of the handle panel; the second end of the handle shaft being connected to the rotary handle.

[0010] As an optional implementation, the handle shaft has a through section located in the through hole; the side wall of the through section is provided with a first annular groove, the opening of the first annular groove facing the inner wall of the through hole, and a first sealing ring is fitted on the first annular groove to abut against the inner wall of the through hole.

[0011] As an optional implementation, the handle panel is disposed on the cabinet door panel; the handle panel is provided with a second annular groove on the side near the cabinet door panel, the second annular groove is arranged around the through hole and the opening faces the cabinet door panel; a second sealing ring is provided in the second annular groove to abut against the cabinet door panel.

[0012] As an optional implementation, both the first end of the handle shaft and the switch operation shaft are cylindrical structures, and both have the same diameter.

[0013] As an optional implementation, the first key has a fan-shaped structure in the cross-section along the vertical axis; and / or, the second key has a fan-shaped structure in the cross-section along the vertical axis.

[0014] As an optional implementation, the first key has a first contact surface in the vertical axis, which contacts the bottom of the second slot; and / or, the second key has a second contact surface in the vertical axis, which contacts the bottom of the first slot.

[0015] On the other hand, this application embodiment provides a disconnecting switch, including a switch module and the aforementioned handle operation component; the switch operation shaft of the handle operation component is linked with the moving contact in the switch module, and the rotation of the switch operation shaft drives the moving contact to perform opening and closing movements.

[0016] The beneficial effects of the embodiments of this application include:

[0017] This embodiment utilizes a bidirectional interlocking connection, resulting in a tighter meshing between the switch operating shaft and the handle shaft during rotation, preventing offset or slippage caused by force applied in one direction. Therefore, it significantly improves the connection strength and stability between the two shafts. This solves the problems of loose operation and slippage caused by unstable connection structures in existing technologies, and enhances the overall mechanical strength and fatigue resistance of the structure. Attached Figure Description

[0018] 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.

[0019] Figure 1 This is a schematic diagram of the structure of the disconnecting switch according to an embodiment of this application;

[0020] Figure 2 This is one of the structural schematic diagrams of the handle operation component according to an embodiment of this application;

[0021] Figure 3 This is a second schematic diagram of the handle operation component according to an embodiment of this application;

[0022] Figure 4 This is the third schematic diagram of the handle operation component in the embodiments of this application;

[0023] Figure 5 This is the fourth schematic diagram of the handle operation component in the embodiments of this application;

[0024] Figure 6 This is the fifth schematic diagram of the handle operation component in the embodiments of this application;

[0025] Figure 7 This is the sixth schematic diagram of the handle operation component in the embodiments of this application;

[0026] Figure 8 This is the seventh schematic diagram of the handle operation component in the embodiments of this application.

[0027] icon:

[0028] 100 - Rotary handle; 101 - Handle shaft; 102 - Switch operation shaft; 103 - Second end; 104 - First end; 105 - First plug-in key; 106 - First slot; 107 - Second plug-in key; 108 - Second slot; 109 - First abutment surface; 110 - Second abutment surface; 111 - Handle panel; 112 - Through hole; 113 - First annular groove; 114 - First sealing ring; 115 - Second annular groove; 116 - Second sealing ring; 117 - Fan-shaped structure; 118 - First contact surface. Detailed Implementation

[0029] 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.

[0030] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0031] It should be noted that similar reference numerals 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. Furthermore, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set," "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.

[0033] In existing technologies, disconnecting switches are typically operated via a handle-operated assembly. This assembly generally includes a rotary handle, a handle shaft, and a switch operating shaft for driving the switch body. In practical applications, the connection structure between the handle shaft and the switch operating shaft suffers from insufficient connection strength and poor fit stability, leading to loosening, slippage, or unstable transmission during operation, thus affecting the operational reliability and service life of the disconnecting switch. Therefore, there is an urgent need to improve the existing connection structure between the handle shaft and the switch operating shaft to enhance its connection stability and transmission reliability.

[0034] To address the aforementioned technical problems, embodiments of this application provide a handle operation component for a disconnecting switch and a disconnecting switch.

[0035] Reference Figure 1 , Figure 2 as well as Figure 3 As shown, the handle operation assembly of the disconnecting switch provided in this application embodiment includes a rotary handle 100, a handle shaft 101, and a switch operation shaft 102; the first end 104 of the handle shaft 101 is provided with a first plug-in structure, and the end of the switch operation shaft 102 is provided with a second plug-in structure that cooperates with the first plug-in structure; the projections of the first plug-in structure and the second plug-in structure at least partially overlap in the direction perpendicular to the axis of the handle shaft 101; the rotary handle 100 drives the switch operation shaft 102 to rotate through the handle shaft 101.

[0036] Specifically, the second end 103 of the handle shaft 101 is connected to the rotary handle 100, and the first end 104 of the handle shaft 101 is connected to the switch operation shaft 102. The first end 104 of the handle shaft 101 is provided with a first insertion key 105 and a first slot 106. The end of the switch operation shaft 102 connected to the handle shaft 101 is provided with a second insertion key 107 and a second slot 108. The first insertion key 105 is inserted into the second slot 108, and the second insertion key 107 is inserted into the first slot 106. The rotary handle 100 drives the switch operation shaft 102 to rotate through the handle shaft 101.

[0037] The rotary handle 100 and the handle shaft 101 can be integrally formed or set as two independent structural parts.

[0038] It should be noted that, in the connection structure between the handle shaft 101 and the switch operation shaft 102, a bidirectional keyway mating structure is designed, that is: the first end 104 of the handle shaft 101 is provided with a first key 105 and a first slot 106; the corresponding end of the switch operation shaft 102 is provided with a second key 107 and a second slot 108;

[0039] In the assembled state, the first key 105 is inserted into the second slot 108; the second key 107 is inserted into the first slot 106.

[0040] With the above design, when the rotating handle 100 drives the handle shaft 101 to rotate, the torque can be effectively transmitted to the switch operating shaft 102 through the bidirectional plug-in structure to realize the opening and closing operation.

[0041] It should be noted that traditional structures are usually unidirectional keyway fits, which can only transmit torque in one direction, and there may be gaps or looseness in the other direction.

[0042] This application utilizes a bidirectional interlocking mechanism, enabling a tighter meshing between the two shafts during rotation and preventing misalignment or slippage caused by unidirectional force. Therefore, it significantly improves the connection strength and stability between the two shafts. It solves problems such as loosening and slippage caused by unstable connection structures in existing technologies, and enhances the overall mechanical strength and fatigue resistance of the structure.

[0043] It should be noted that the handle operating component requires frequent forward and reverse operations of opening and closing the circuit breaker in actual use. The one-way keyway structure is prone to "free-spinning" or "slipping" during reverse operation, affecting transmission efficiency.

[0044] The bidirectional plug-in structure of this application embodiment ensures that a corresponding key is inserted into the corresponding slot regardless of the direction of rotation, guaranteeing the continuity and consistency of bidirectional transmission. This ensures stable torque transmission between the handle shaft 101 and the switch operating shaft 102 during both forward and reverse rotation. Therefore, this application embodiment effectively enhances the transmission reliability between the handle shaft 101 and the switch operating shaft 102, avoiding operational failures or malfunctions caused by transmission failure.

[0045] It should be noted that traditional structures, due to their large gaps or single-point contact, are prone to wear of the keys or grooves during long-term use.

[0046] The bidirectional plug-in structure of this application distributes the force across multiple contact surfaces, reducing the pressure per unit area and minimizing wear. Simultaneously, the structural stability reduces abnormal wear caused by vibration or impact. Therefore, this application embodiment can slow down the wear rate of critical components and extend the service life of the entire operating assembly and even the disconnecting switch.

[0047] In summary, this application embodiment, by introducing a bidirectional keyway structure between the handle shaft 101 and the switch operation shaft 102, achieves the following from a mechanical structure perspective: enhanced connection strength; improved fit stability; guaranteed transmission reliability; and extended service life. Therefore, this application embodiment effectively solves the problems of poor connection structure stability and unreliable operation in the prior art, and has good application prospects.

[0048] Reference Figure 2As shown, in one optional implementation, the central axis of the handle shaft 101 coincides with the central axis of the switch operation shaft 102; at least two first plug keys 105 and at least two second plug keys 107 are arranged alternately around the central axis.

[0049] In this embodiment, the central axis of the handle shaft 101 coincides with the central axis of the switch operation shaft 102, which ensures that the handle shaft 101 and the switch operation shaft 102 can maintain coaxial rotation during rotation, reducing additional stress and wear caused by eccentricity.

[0050] In this embodiment, at least two first plug-in keys 105 and at least two second plug-in keys 107 are arranged alternately around the central axis. This arrangement not only increases the contact area but also creates a more uniform force distribution in the circumferential direction, improving the efficiency and stability of torque transmission. This ensures that the force is no longer concentrated at a single or a few points but is evenly distributed along the circumferential direction. Therefore, during opening and closing operations, the torque of the rotating handle 100 can be transmitted to the switch operating shaft 102 more effectively, reducing energy loss. In effect, this embodiment improves the efficiency of the entire transmission system, ensuring stable operation even under high load conditions.

[0051] This embodiment of the application increases the number of first connectors 105 and second connectors 107 and distributes them evenly around the central axis. This enhances the mechanical strength of the entire connection structure, extends its service life, and reduces the frequency of maintenance.

[0052] It should be noted that more interlocking keys mean a larger contact area, thereby dispersing the force and reducing the occurrence of localized stress concentration. Furthermore, the tight fit between the components reduces the risk of loosening. Therefore, the embodiments of this application provide a smoother and more precise operating experience, improving user satisfaction and equipment safety.

[0053] For example, refer to Figure 2 , Figure 3 As shown, there are four first plug keys 105, and the four first plug keys 105 are arranged at intervals around the central axis. There are four second plug keys 107, and the four second plug keys 107 are arranged at intervals around the central axis.

[0054] For example, refer to Figure 6 , Figure 7 As shown, there are three first plug keys 105, and the three first plug keys 105 are arranged at intervals around the central axis. There are three second plug keys 107, and the three second plug keys 107 are arranged at intervals around the central axis.

[0055] Reference Figure 2 , Figure 3As shown, in one optional implementation, the first slot 106 is located between two adjacent first plug keys 105, and the second slot 108 is located between two adjacent second plug keys 107; the first plug keys 105 have first abutting surfaces 109 on both sides of the extension direction of the handle shaft 101, and the second plug keys 107 have second abutting surfaces 110 on both sides of the extension direction of the handle shaft 101; the first abutting surfaces 109 and the second abutting surfaces 110 are in contact.

[0056] The embodiment of this application, through the design of the first abutting plane 109 and the second abutting plane 110 fitting together, can enhance connection stability and shear resistance. This design of the embodiment of this application increases the contact area, which can not only prevent slippage in the rotational direction during torque transmission, but also effectively resist shear forces from the direction perpendicular to the rotation axis, thereby enhancing the rigidity of the overall structure.

[0057] Therefore, the embodiments of this application can significantly improve the stability and reliability of the connection parts and reduce the risk of deformation or damage caused by external loads or impacts.

[0058] In this embodiment of the application, in addition to the basic cooperation of the key and slot during assembly, the contact surface further ensures the precise alignment between components, avoiding operational difficulties or inefficiencies caused by minor deviations. Therefore, the above-mentioned design helps improve assembly quality, ensures that each unit operates in optimal condition, extends service life, and reduces the failure rate.

[0059] In addition, the contact surface added in this embodiment helps to disperse stress. When the disconnecting switch is in operation, especially under frequent start-stop or large load changes, the contact surface can effectively disperse the force and reduce the occurrence of local overload.

[0060] Reference Figure 4 As shown, as an optional embodiment, it also includes a handle panel 111, which has a through hole 112; a handle shaft 101 passes through the through hole 112, with the second end 103 and the first end 104 of the handle shaft 101 respectively located on both sides of the handle panel 111. The handle shaft 101 has a through section located in the through hole 112; a first annular groove 113 is provided on the side wall of the through section, the opening of the first annular groove 113 faces the inner wall of the through hole 112, and a first sealing ring 114 is fitted on the first annular groove 113 to abut against the inner wall of the through hole 112.

[0061] It should be noted that the through section refers to the part of the handle shaft 101 that passes through the through hole 112 of the handle panel 111; the first annular groove 113 is provided on the side wall of the through section, with its opening facing the inner wall of the through hole 112, for accommodating the first sealing ring 114. The first sealing ring 114 is fitted in the first annular groove 113 and abuts tightly against the inner wall of the through hole 112 to form a sealing fit.

[0062] In this embodiment of the application, the first sealing ring 114 contacts the inner wall of the through hole 112 and undergoes elastic compression deformation, which can achieve good dustproof and waterproof sealing performance.

[0063] Specifically, the first sealing ring 114 is in a compressed state after installation, forming an effective sealing interface with the inner wall of the through hole 112; it can effectively prevent external impurities such as dust and moisture from entering the equipment; for disconnecting switches used outdoors or in humid environments, the sealing structure of this application embodiment is particularly important.

[0064] In addition, the embodiments of this application can improve the protection level of the equipment, extend the service life of the internal mechanism, and reduce operational failures or jamming caused by contamination.

[0065] Because the first sealing ring 114 in this embodiment is located at the rotating part of the handle shaft 101 and is made of a flexible material, it provides a sealing function without causing significant resistance to the rotational movement. This allows the handle shaft 101 to rotate smoothly within the sealing ring without affecting normal opening and closing operations. Therefore, this embodiment achieves sealing while maintaining operational flexibility.

[0066] Reference Figure 5 As shown, in one optional embodiment, the handle panel 111 is provided on the cabinet door panel; the handle panel 111 is provided with a second annular groove 115 on the side near the cabinet door panel, the second annular groove 115 is arranged around the through hole 112 and the opening faces the cabinet door panel; a second sealing ring 116 is provided in the second annular groove 115 to abut against the cabinet door panel.

[0067] In this embodiment of the application, the handle panel 111 is disposed on the cabinet door panel. As part of the disconnect switch operation component, the handle panel 111 is fixed on the cabinet door panel to facilitate user operation.

[0068] It should be noted that the second sealing ring 116 provides a contact seal with the cabinet door panel. The second sealing ring 116, through elastic deformation, fills the tiny gap between the handle panel 111 and the cabinet door panel, preventing external impurities and moisture from intruding. Therefore, the embodiments of this application, through the above-described design, can enhance the overall protection level of the equipment, ensuring that internal electrical components are protected from contamination, and improving the reliability and service life of the equipment.

[0069] In addition to providing a sealing function, the second sealing ring 116 can also increase the friction between the handle panel 111 and the cabinet door panel to a certain extent, preventing the handle panel 111 from loosening or shifting due to vibration or other external forces. Therefore, the above-mentioned configuration improves the overall stability and safety of the handle operating assembly and reduces the risk of misoperation caused by vibration.

[0070] In addition, a well-designed seal reduces the likelihood of internal components becoming contaminated. Because the seals effectively prevent external contaminants from entering the equipment, the probability of internal component failure is reduced, thus decreasing the need for regular inspections and cleaning.

[0071] Reference Figure 6 , Figure 7 as well as Figure 8 As shown, in one optional implementation, the first end 104 of the handle shaft 101 and the switch operation shaft 102 are both cylindrical structures, and their diameters are the same.

[0072] In this embodiment, both the first end 104 and the switch operating shaft 102 are cylindrical with the same diameter. This makes alignment and insertion into the corresponding slots or keyways easier during assembly, ensuring consistent and accurate installation. Furthermore, when the handle shaft 101 and the switch operating shaft 102 have the same diameter, the torque transmission path is more direct and smooth, avoiding stress concentration or energy loss caused by diameter mismatch.

[0073] Reference Figure 6 As shown, in one optional embodiment, the first key 105 has a fan-shaped structure 117 in cross-section along the vertical axis; the second key 107 also has a fan-shaped structure 117 in cross-section along the vertical axis. The first key 105 has a first contact surface 118 in the vertical axis, which contacts the bottom of the second slot 108; the second key 107 has a second contact surface in the vertical axis, which contacts the bottom of the first slot 106.

[0074] It should be noted that the center of the sector structure 117 coincides with the center of the cylindrical structure mentioned above. The sector structure 117 can form the first contact surface 118, the second contact surface, the first abutment surface, and the second abutment surface with the largest area.

[0075] Compared to rectangular or other irregular structures, the fan-shaped structure 117 can provide a larger contact area within the same volume; especially after the key is inserted into the slot, the first contact surface 118 is in close contact with the bottom surface of the second slot 108, which can effectively transmit axial load; at the same time, the large-area contact between the abutting surfaces also enhances the transmission efficiency of circumferential torque.

[0076] Therefore, the embodiments of this application can further improve the load-bearing capacity and compressive strength of the plug-in structure; reduce local stress concentration and improve the fatigue life of the overall structure.

[0077] In addition, since the fan-shaped structure 117 is symmetrically distributed around the axis, the force on each part is more uniform during rotation, thus avoiding eccentric torque or vibration caused by asymmetrical structure.

[0078] The disconnecting switch provided in this application includes a switch module and the aforementioned handle operation component; the switch operation shaft 102 of the handle operation component is linked with the moving contact in the switch module, and the rotation of the switch operation shaft 102 drives the moving contact to perform opening and closing movements.

[0079] The disconnect switch in this embodiment includes the aforementioned handle operating assembly. Through bidirectional insertion, the switch operating shaft 102 and the handle shaft 101 engage more tightly during rotation, preventing offset or slippage caused by force applied in one direction. Therefore, the connection strength and stability between the two shafts are significantly improved. This solves the problems of loose operation and slippage caused by unstable connection structures in the prior art, and enhances the overall mechanical strength and fatigue resistance of the structure.

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

Claims

1. A handle operating assembly for a disconnecting switch, characterized in that, It includes a handle shaft (101) and a switch operating shaft (102); the first end (104) of the handle shaft (101) is provided with a first plug-in structure, and the end of the switch operating shaft (102) is provided with a second plug-in structure that cooperates with the first plug-in structure; the first plug-in structure and the second plug-in structure at least partially overlap in projection in the direction perpendicular to the axis of the handle shaft (101); the switch operating shaft (102) is driven to rotate by the handle shaft (101).

2. The handle operating assembly of the disconnecting switch according to claim 1, characterized in that, The first plug-in structure includes a first plug-in key (105) and a first slot (106); the second plug-in structure includes a second plug-in key (107) and a second slot (108); the first plug-in key (105) is inserted into the second slot (108), and the second plug-in key (107) is inserted into the first slot (106).

3. The handle operating assembly of the disconnecting switch according to claim 2, characterized in that, The central axis of the handle shaft (101) coincides with the central axis of the switch operation shaft (102); at least two first plug keys (105) and at least two second plug keys (107) are arranged alternately around the central axis.

4. The handle operating assembly of the disconnecting switch according to claim 3, characterized in that, The first slot (106) is located between two adjacent first plug keys (105), and the second slot (108) is located between two adjacent second plug keys (107); the first plug key (105) has a first abutting surface (109) on both sides of the extension direction of the handle shaft (101), and the second plug key (107) has a second abutting surface (110) on both sides of the extension direction of the handle shaft (101); the first abutting surface (109) and the second abutting surface (110) are in contact.

5. The handle operating assembly of the disconnector according to claim 2, characterized in that, It also includes a rotary handle (100) and a handle panel (111), wherein the handle panel (111) is provided with a through hole (112); the handle shaft (101) passes through the through hole (112), and the second end (103) and the first end (104) of the handle shaft (101) are respectively located on both sides of the handle panel (111); the second end (103) of the handle shaft (101) is connected to the rotary handle (100).

6. The handle operating assembly of the disconnecting switch according to claim 5, characterized in that, The handle shaft (101) has a through section located in the through hole (112); a first annular groove (113) is provided on the side wall of the through section, the opening of the first annular groove (113) faces the inner wall of the through hole (112), and a first sealing ring (114) is fitted on the first annular groove (113) to abut against the inner wall of the through hole (112).

7. The handle operating assembly of the disconnecting switch according to claim 5, characterized in that, The handle panel (111) is provided on the cabinet door panel; the handle panel (111) is provided with a second annular groove (115) on the side near the cabinet door panel, the second annular groove (115) is arranged around the through hole (112) and the opening faces the cabinet door panel; a second sealing ring (116) is provided in the second annular groove (115) to abut against the cabinet door panel.

8. The handle operating assembly of the disconnecting switch according to claim 2, characterized in that, The first key (105) has a fan-shaped structure (117) in the cross-section along the vertical axis; and / or, the second key (107) has a fan-shaped structure (117) in the cross-section along the vertical axis.

9. The handle operating assembly of the disconnecting switch according to any one of claims 2-8, characterized in that, The first plug key (105) has a first contact surface (118) in the vertical axis, which contacts the bottom of the second slot (108); and / or, the second plug key (107) has a second contact surface in the vertical axis, which contacts the bottom of the first slot (106).

10. A disconnecting switch, characterized in that, It includes a switch module and a handle operation assembly as described in any one of claims 1-9; the switch operation shaft (102) of the handle operation assembly is linked to the moving contact in the switch module, and the rotation of the switch operation shaft (102) drives the moving contact to perform opening and closing movements.

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