Manual operation mechanism suitable for handle operation

Abstract

The manual operation mechanism comprises a shell, a first through hole is formed in the top end face of the shell, a main rotating shaft is arranged in the first through hole, a second through hole is formed in the side face of the shell, an auxiliary rotating shaft is arranged in the second through hole, the auxiliary rotating shaft is perpendicular to the main rotating shaft, and the main rotating shaft and the auxiliary rotating shaft are connected with a driving assembly. The driving assembly is in linkage connection with a sliding assembly used for driving the handle to be switched on and switched off, a fixing support is arranged in the shell and used for bearing the sliding assembly, and when the main rotating shaft or the auxiliary rotating shaft rotates in the first direction, the driving assembly drives the sliding assembly and drives the handle to be switched on. The driving assembly drives the sliding assembly and drives the handle to open. Through vertical arrangement and independent driving functions of the main rotating shaft and the auxiliary rotating shaft, a double-rotating-shaft redundant operation mechanism is realized, and dependence of a single fault point is effectively eliminated; and meanwhile, the transmission path and the internal structure are simplified by combining the optimized layout of the driving assembly and the sliding assembly.

Description

Technical Field

[0001] This invention relates to the field of electrical switchgear technology, specifically a manual operating mechanism suitable for handle operation, used to drive the handle of a circuit breaker to perform opening and closing operations. Background Technology

[0002] During circuit breaker operation, the handle of the manual operating mechanism, as the core driving component, plays a crucial role in ensuring reliable closing and opening of the circuit breaker. The handle design must ensure operational stability while integrating a locking protection mechanism to prevent misoperation in the locked state and ensure safe equipment operation. However, currently widely used manual operating mechanisms generally employ a single-shaft structure, a design with significant drawbacks. When the single shaft experiences wear, breakage, or jamming due to prolonged use, the entire operating mechanism immediately loses its function, unable to complete closing or opening actions, causing the circuit breaker to malfunction. This single point of failure forces users to replace the entire mechanism, significantly increasing maintenance costs and downtime. Furthermore, the internal structure of existing manual operating mechanisms is overly complex, containing numerous precision parts and intricate transmission paths. This not only makes assembly exceptionally difficult and prone to errors but also reduces the overall structural reliability, affecting operational feel and service life. The complex structure also increases manufacturing difficulty, hindering large-scale production and quality control. Therefore, there is an urgent need for a new type of manual operating mechanism design to eliminate reliance on a single rotating shaft, improve system redundancy and fault tolerance, simplify the internal structure, reduce assembly complexity, and thus improve the reliability and maintainability of the equipment.

[0003] To address the aforementioned issues, existing technologies urgently need improvement. Summary of the Invention

[0004] The purpose of this application is to provide a manual operating mechanism suitable for handle operation, which has a dual-shaft redundancy design. When either the main shaft or the auxiliary shaft fails, the other shaft can still drive the handle to complete the opening and closing operation, effectively avoiding the problem of a single point of failure and improving the reliability and maintainability of the operating mechanism. At the same time, the structure is reasonably designed, simplifying the internal structure and reducing the assembly difficulty.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: This application provides a manual operating mechanism suitable for handle operation, the technical solution of which is as follows: The device includes a housing. A first through hole is provided on the top end face of the housing, and a main rotating shaft is provided inside the first through hole. A second through hole is provided on the side of the housing, and a secondary rotating shaft is arranged inside the second through hole. The secondary rotating shaft is perpendicular to the main rotating shaft. The main rotating shaft and the secondary rotating shaft are connected to a drive assembly. The drive assembly is linked to a sliding assembly for driving the handle to open and close the circuit breaker. A fixed bracket is provided inside the housing to support the sliding assembly. When the main rotating shaft or the secondary rotating shaft rotates in a first direction, the drive assembly drives the sliding assembly and drives the handle to close the circuit breaker. When the main rotating shaft or the secondary rotating shaft rotates in a second direction, the drive assembly drives the sliding assembly and drives the handle to open the circuit breaker.

[0006] Furthermore, this application also proposes that the drive assembly includes a first gear, a second gear, and a transmission rod located on the extension of the first gear. The first gear is linked with the main shaft, the second gear is linked with the auxiliary shaft, the first gear and the second gear mesh, the first gear has an extension, an opening is provided on the extension to penetrate the extension, a transmission rod is provided in the opening, a guide groove is provided on the fixed bracket, and the transmission rod passes through the guide groove to link with the sliding assembly.

[0007] Furthermore, this application also proposes that the fixing bracket includes a main board and side legs, the side legs being used to clamp the circuit breaker housing, and guide grooves being formed on the main board.

[0008] Furthermore, this application also proposes that the side support includes a first support, a second support, a third support, and a fourth support, with the first and second supports on the same side, and the third and fourth supports on the same side. The sliding assembly includes a first guide rail, a second guide rail, and a sliding block slidably disposed on the first and second guide rails. A first limiting block and a second limiting block are formed on the side of the sliding block facing the handle, and there is a space between the first limiting block and the second limiting block for accommodating the handle. A recessed groove is formed on the side of the sliding block away from the handle, and one end of the transmission rod is located in the recessed groove. The first guide rail is located between the first and third supports, and the second guide rail is located between the second and fourth supports. The first and second guide rails are disposed through the sliding block.

[0009] Furthermore, this application also proposes that the first gear and the second gear are bevel gears.

[0010] Furthermore, this application proposes that the drive assembly includes a connecting rod connected to the main rotating shaft and a sector gear disposed on the secondary rotating shaft. The connecting rod is located in the fixed bracket and is linked with the sliding assembly. When the main rotating shaft rotates, it drives the connecting rod and simultaneously drives the sliding assembly. The sliding assembly drives the handle to open and close the brake. The portion of the sliding assembly near the sector gear has a slot adapted to the teeth of the sector gear. During rotation, the teeth cooperate with the slot to push the sliding assembly to move and realize the opening and closing of the brake. The fixed bracket has a support portion for placing a torsion spring. The torsion spring cooperates with the sector gear and provides a restoring force to the sector gear. The sector gear has an action portion near its top for abutting one end of the torsion spring.

[0011] Furthermore, this application also proposes that the fixing bracket includes a main board and side legs, the side legs being used to clamp the circuit breaker housing.

[0012] Furthermore, this application also proposes that the side support includes a first support, a second support, a third support, and a fourth support, with the first and second supports on the same side, and the third and fourth supports on the same side. The sliding assembly includes a first guide rail, a second guide rail, and a sliding plate slidably disposed on the first and second guide rails. The sliding plate includes an upper sliding bracket and a lower sliding block connected to each other. The upper sliding bracket has a through hole, and the lower sliding block has a groove corresponding to the through hole to accommodate the other end of the connecting rod. The side of the lower sliding block facing the handle has a first limiting block and a second limiting block, which are used to accommodate the handle. The first guide rail is located between the first and third supports, and the second guide rail is located between the second and fourth supports. The first and second guide rails pass through the upper sliding bracket, and the slot is opened in the upper sliding bracket.

[0013] Furthermore, this application also proposes that a fixing plate is provided on the first side and the second side of the fixing bracket, the first side and the second side are arranged opposite to each other, the fixing plate is fixedly fastened to the side support leg, and a snap-fit ​​positioning plate is also provided on the inner side of the fixing plate, and a snap-fit ​​is provided between the snap-fit ​​positioning plates.

[0014] As can be seen from the above, the manual operating mechanism suitable for handle operation provided by this application realizes a dual-axis redundant operation mechanism through the vertical setting of the main rotating shaft and the auxiliary rotating shaft and the independent drive function, effectively eliminating the dependence on a single failure point; at the same time, the optimized layout of the drive component and the sliding component simplifies the transmission path and internal structure, and has the above advantages. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1This is a perspective view of Embodiment 1 of the present invention.

[0016] Figure 2 This is a schematic diagram of the structure of Embodiment 1 of the present invention.

[0017] Figure 3 This is an exploded view of Embodiment 1 of the present invention.

[0018] Figure 4 This is a perspective view of Embodiment 2 of the present invention.

[0019] Figure 5 This is a schematic diagram of the structure of Embodiment 2 of the present invention.

[0020] Figure 6 This is an exploded view of Embodiment 2 of the present invention.

[0021] Reference numerals: 10, housing; 101, first through hole; 102, second through hole; 20, main shaft; 30, auxiliary shaft; 40, drive assembly; 401, first gear; 402, second gear; 403, extension; 4031, opening; 404, transmission rod; 405, connecting rod; 406, sector gear; 4061, actuating part; 50, sliding assembly; 501, first guide rail; 502, second guide rail; 503, recessed groove; 504, sliding block; 5041, recessed groove 505. First limiting block; 506. Second limiting block; 507. Upper sliding bracket; 5071. Groove; 5072. Through hole; 508. Lower sliding block; 5081. Groove; 60. Fixed bracket; 601. Main board; 602. First side support; 603. Second side support; 604. Third side support; 605. Fourth side support; 606. Guide groove; 607. Support part; 70. Torsion spring; 80. Fixed plate; 90. Buckle positioning plate; 100. Buckle; Detailed Implementation

[0022] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0023] Example 1 like Figure 1 -like Figure 3As shown, the working principle of Embodiment 1 of this application is as follows: The housing 10 serves as the basic support frame of the overall structure, used to accommodate and position all components. A main rotating shaft 20 is installed in the first through-hole 101 on the top end face of the housing 10, serving as the primary operation input point and receiving externally applied operating force. A secondary rotating shaft 30 is installed in the second through-hole 102 on the side of the housing 10, arranged perpendicularly to the main rotating shaft 20 to form a backup operation input path. Furthermore, the main rotating shaft 20 and the secondary rotating shaft 30 transmit power through a drive assembly 40, integrating and transmitting their rotational motion to the sliding assembly 50. Driven by the drive assembly 40, the sliding assembly 50 converts the rotational motion into linear motion, thereby directly driving the handle to complete the opening and closing actions.

[0024] A fixed bracket 60 is provided inside the housing 10, providing a stable support platform for the sliding assembly 50 and ensuring its reliability during movement. When the main shaft 20 or the auxiliary shaft 30 rotates in the first direction, the drive assembly 40 drives the sliding assembly 50 to move along a predetermined trajectory, thereby pushing the handle to perform the closing function. Similarly, when the main shaft 20 or the auxiliary shaft 30 rotates in the second direction, the drive assembly 40 drives the sliding assembly 50 to move in the opposite direction, thereby driving the handle to complete the opening operation. Thus, the vertical arrangement of the main shaft 20 and the auxiliary shaft 30 avoids mutual interference between their movements, while realizing the function of independently driving the opening and closing of either shaft.

[0025] Specifically, when the main shaft 20 malfunctions and cannot operate normally, the auxiliary shaft 30 can take its place and perform the operation, and vice versa. This redundant design effectively solves the problem of the inability to perform the opening and closing functions due to the failure of a single operating shaft. In addition, the introduction of the fixed bracket 60 simplifies the installation and support structure of the sliding assembly 50, reduces the use of complex connecting parts, and thus reduces the assembly difficulty. Through optimized design, the overall structure avoids the existence of redundant parts, making the assembly process more efficient, while improving the reliability and maintenance convenience of the manual operating mechanism.

[0026] This application further proposes that the drive assembly 40 includes a first gear 401, a second gear 402, and a transmission rod 404 located on the extension 403 of the first gear 401. The first gear 401 is linked with the main rotating shaft 20, and the second gear 402 is linked with the auxiliary rotating shaft 30. The first gear 401 and the second gear 402 mesh. The first gear 401 has an extension 403. An opening 4031 is provided on the extension 403, and the transmission rod 404 is disposed in the opening 4031. A guide groove 606 is provided on the fixed bracket 60, and the transmission rod 404 passes through the guide groove 606 and is linked with the sliding assembly 50.

[0027] Specifically, the first gear 401 is a key component that links with the main shaft 20 to transmit rotational motion. It can be implemented using a spur gear or bevel gear, etc., with the aim of efficiently capturing and transmitting the rotational motion of the main shaft 20 to subsequent mechanisms. The second gear 402 is a component that links with the auxiliary shaft 30 and meshes with the first gear 401. It can also be implemented using a spur gear or bevel gear, etc., with the aim of achieving seamless power transmission between vertical shafts, thereby simplifying the overall structural design. The extension 403 is the structural part on the first gear 401 used to mount the transmission rod 404. It can be implemented by integral molding or separate assembly, with the aim of providing a support point for the conversion of rotational motion into linear displacement. The transmission rod 404 is a component that passes through the opening 4031 of the extension 403 and links with the sliding assembly 50. It can be implemented using a cylindrical rod or a rod with a positioning structure, with the aim of converting rotational motion into linear displacement. The guide groove 606 refers to the groove-shaped structure on the fixed bracket 60 used to constrain the movement trajectory of the transmission rod 404. It can be realized by machining or molding, and its purpose is to improve the smoothness and reliability of the movement of the transmission rod 404.

[0028] In detail, this technical solution ensures the direct transmission of the rotational motion of the main shaft 20 through the linkage of the first gear 401 with the main shaft 20, avoiding energy loss and assembly errors introduced by additional connecting parts. The linkage of the second gear 402 with the auxiliary shaft 30 enables the rotation of the auxiliary shaft 30 to be efficiently captured, and achieves seamless power transmission between vertical shafts through gear meshing. The extension 403 of the first gear 401 provides a key support point for motion conversion, allowing the rotational motion to be effectively guided to a linear direction. The through hole 4031 on the extension 403 ensures the stable installation of the transmission rod 404, avoiding motion inaccuracies caused by loosening. The design of the transmission rod 404 passing through the guide groove 606 and linking with the sliding component 50 not only reduces frictional loss and assembly difficulty in the intermediate links, but also prevents the transmission rod 404 from deflecting or jamming during movement through the constraint of the guide groove 606. Furthermore, this technical solution, through the synergistic effect of gear meshing and the guiding mechanism, can still provide effective redundancy even when a single shaft is damaged, thereby significantly reducing maintenance costs and replacement difficulty.

[0029] The above technical solution solves the problems of complex structure, large number of parts and high assembly precision requirements of drive component 40, while improving the reliability and economy of manual operation mechanism.

[0030] This application further proposes a fixed bracket 60 including a main board 601 and side legs, the side legs being used to clamp the circuit breaker housing 10, and a guide groove 606 being formed on the main board 601.

[0031] In this embodiment, a vertical beam is also provided on the fixed bracket to fix one end of the tension spring, and the other end of the tension spring is used to connect the part of the transmission rod located above the fixed bracket to provide restoring force when the circuit is opened.

[0032] Specifically, the mainboard 601 refers to the planar structure that serves as the core load-bearing component. It can be made of materials with a certain degree of rigidity and strength, such as metal plates or engineering plastic plates. Its purpose is to provide a uniform support base for the sliding assembly 50 and to ensure that the guide groove 606 can be directly opened on it to improve motion accuracy. The side support can be understood as an auxiliary structure used to enhance the connection stability between the fixed bracket 60 and the circuit breaker housing 10. It can achieve the clamping function through elastic clamping parts, snap-fit ​​structures 100, or similar methods. Its purpose is to simplify the installation steps and improve the overall rigidity.

[0033] In detail, the main board 601 provides a stable support platform for the sliding component 50 through its planar structure. The guide groove 606 is directly formed on the main board 601, ensuring the straightness and repeatability of the sliding component 50's trajectory during movement and avoiding movement deviation caused by local deformation or loose connections. The side support design uses a clamping method instead of traditional bolt fixing, which not only reduces assembly complexity but also enhances the overall rigidity between the bracket and the housing 10, thereby preventing displacement caused by vibration or external forces during operation. The combination of the main board 601 and the side support provides stable support for the fixed bracket 60 under complex working conditions, significantly improving the practicality and maintenance efficiency of the manual operating mechanism. In addition, the structure of the guide groove 606 integrated into the main board 601 reduces the introduction of additional guide components, lowers potential failure points, and makes the movement of the sliding component 50 more precise and reliable. The above design optimizes the overall performance of the fixed bracket 60, solves the problems of installation stability and movement guidance accuracy, and improves the reliability and assembly convenience of the manual operating mechanism.

[0034] This application further proposes a side support foot including a first foot, a second foot, a third foot, and a fourth foot. The first foot and the second foot are located on the same side, and the third foot and the fourth foot are located on the same side. The sliding assembly 50 includes a first guide rail 501, a second guide rail 502, and a sliding block 504 slidably disposed on the first guide rail 501 and the second guide rail 502. The sliding block 504 has a first limiting block 505 and a second limiting block 506 formed on the side facing the handle. The first limiting block 505 and the second limiting block 506 are used to accommodate the handle. The sliding block 504 has a recessed groove 5041 formed on the side away from the handle. One end of the transmission rod 404 is located in the recessed groove 5041. The first guide rail 501 is located between the first foot and the third foot, and the second guide rail 502 is located between the second foot and the fourth foot. The first guide rail 501 and the second guide rail 502 are disposed through the sliding block 504.

[0035] In practical applications, the first, second, third, and fourth supports refer to a symmetrically distributed support structure, which can be formed by stamping or injection molding of sheet metal. The design of the first and second supports being arranged on the same side, and the third and fourth supports being arranged on the same side, aims to form a stable clamping system, facilitating rapid assembly and reducing positioning errors. The sliding block 504 can be understood as a multi-directional functional moving component. Its first limiting block 505 and second limiting block 506, located near the handle, fix the handle position through a clearance fit, preventing handle displacement during opening and closing. The recessed groove 5041 on the side of the sliding block 504 away from the handle is specifically designed to engage the end of the transmission rod 404, reducing frictional loss and impact stress during movement. The first guide rail 501 and second guide rail 502 are linear guiding structures, installed in the areas between the first and third supports, and between the second and fourth supports, respectively, ensuring that the sliding block 504 moves smoothly along a predetermined trajectory.

[0036] Specifically, this solution significantly improves the overall stability of the manual operating mechanism through the combination of a four-leg group layout and a dual-rail system. The symmetrical distribution of the first and second legs, and the third and fourth legs, allows the fixed bracket 60 to firmly clamp the circuit breaker housing 10, while providing a reliable mounting base for the rails. The first rail 501 and the second rail 502 are directly mounted between the legs, ensuring not only rigid support for the rails but also preventing movement deviation of the sliding block 504 due to assembly errors. As a core transmission component, the sliding block 504 has a gap design between its first limiting block 505 and second limiting block 506 that precisely matches the handle size, effectively limiting handle wobbling during opening and closing and ensuring accurate transmission of driving force. Furthermore, the structure of the transmission rod 404's end embedded in the recessed groove 5041 of the sliding block 504 further enhances the reliability of the transmission connection and reduces energy loss during movement. Overall, the precise matching of the leg group design and guide rail position simplifies the assembly process, while enhancing the dynamic performance of the sliding component 50, thus solving the problems of complex structure and high assembly difficulty mentioned in the background technology.

[0037] Through the above technical solutions, the manual operating mechanism exhibits higher stability and reliability during the opening and closing process, while reducing the complexity of maintenance and assembly, demonstrating the ingenuity and practicality of the design.

[0038] This application further proposes that the first gear 401 and the second gear 402 are bevel gears.

[0039] Specifically, the first gear 401 refers to the gear structure that is linked to the main shaft 20. It can be implemented using a straight bevel gear or a helical bevel gear, with the purpose of adapting to the vertical transmission requirements between the main shaft 20 and the secondary shaft 30 through its conical tooth surface. The second gear 402 refers to the gear structure that is linked to the secondary shaft 30 and meshes with the first gear 401. It can also be implemented using a straight bevel gear or a helical bevel gear, with the purpose of ensuring smooth meshing with the first gear 401, thereby achieving effective power transmission.

[0040] In detail, the design of the first gear 401 and the second gear 402 employs a special bevel gear structure. This design effectively solves the power transmission problem when the main shaft 20 and the auxiliary shaft 30 are vertically aligned. Because the bevel gear teeth are tapered, they can form a uniform contact distribution between intersecting shafts, avoiding the tooth surface slippage and localized stress concentration caused by the non-parallel axes of ordinary spur gears in a vertical configuration. This characteristic makes the power transmission from the main shaft 20 to the auxiliary shaft 30 smoother and more continuous, significantly reducing vibration and noise during transmission. Furthermore, the bevel gear meshing method simplifies the assembly process, achieving precise meshing without additional gear angle adjustments, reducing the risk of mechanism failure due to poor gear matching. Simultaneously, this design also improves the overall reliability and service life of the drive assembly 40, avoiding frequent replacements due to accelerated gear wear, thereby reducing maintenance costs.

[0041] Based on this, the first gear 401 and the second gear 402, as the core components of the drive assembly 40, together with the main shaft 20, the auxiliary shaft 30, and the sliding assembly 50, constitute the key transmission chain of the manual operating mechanism. When the main shaft 20 or the auxiliary shaft 30 rotates, the first gear 401 and the second gear 402 transmit power to the sliding assembly 50 through the meshing of their conical tooth surfaces, thereby driving the handle to complete the opening and closing operation. This vertical shaft transmission scheme not only achieves efficient power transmission but also optimizes the structural layout of the entire manual operating mechanism, significantly improving its functionality and reliability.

[0042] Example 2

[0043] like Figures 4-6As shown, in this embodiment, a manual operating mechanism suitable for handle operation is proposed. It is characterized by including a housing 10, with a first through hole 101 on the top end face of the housing 10. A main rotating shaft 20 is disposed within the first through hole 101. A second through hole 102 is opened on the side of the housing 10, with a secondary rotating shaft 30 disposed within the second through hole 102. The secondary rotating shaft 30 is perpendicular to the main rotating shaft 20. The main rotating shaft 20 and the secondary rotating shaft 30 are connected to a drive assembly 40. The drive assembly 40 is linked to a sliding assembly 50 for driving the handle to open and close the circuit breaker. A fixed bracket 60 is provided inside the housing 10 to support the sliding assembly 50. When the main rotating shaft 20 or the secondary rotating shaft 30 rotates in a first direction, the drive assembly 40 drives the sliding assembly 50 and drives the handle to close the circuit breaker. When the main rotating shaft 20 or the secondary rotating shaft 30 rotates in a second direction, the drive assembly 40 drives the sliding assembly 50 and drives the handle to open the circuit breaker.

[0044] The structure of the driving component 40 differs from that of Embodiment 1, specifically: The drive assembly 40 includes a connecting rod 405 connected to the main rotating shaft 20 and a sector gear 406 mounted on the auxiliary rotating shaft 30. The connecting rod 405 is located within the fixed bracket 60 and is linked with the sliding assembly 50. When the main rotating shaft 20 rotates, it drives the connecting rod 405 and simultaneously drives the sliding assembly 50. The sliding assembly 50 drives the handle to open and close the brake. The portion of the sliding assembly 50 near the sector gear 406 has a slot 5071 that matches the teeth of the sector gear 406. During rotation, the teeth cooperate with the slot 5071 to push the sliding assembly 50 to move and achieve the opening and closing of the brake. The fixed bracket 60 has a support portion 607 for placing a torsion spring 70. One end of the torsion spring is located in a round hole on the main board. The torsion spring 70 cooperates with the sector gear 406 and provides a restoring force to the sector gear 406. The sector gear 406 has an action portion 4061 near its top for abutting against one end of the torsion spring 70.

[0045] The connecting rod 405 is a rigid structural component, which can be a straight or curved rod made of metal, and its purpose is to convert the rotational motion of the main shaft 20 into the linear motion of the sliding component 50. The sector gear 406 is a partial gear structure with teeth distributed along its arc-shaped profile, capable of transmitting power through meshing with the slot 5071. The slot 5071 refers to a groove 5081 structure opened on the sliding component 50, the shape of which matches the teeth of the sector gear 406 to ensure precise engagement. The support 607 can be a boss or bracket structure on the fixed bracket 60, and its purpose is to provide a stable mounting position for the torsion spring 70. The actuating part 4061 refers to a specific area designed on the sector gear 406 for contacting one end of the torsion spring 70 and transmitting elastic force.

[0046] Specifically, the above solution optimizes the function of the manual operating mechanism through the organic cooperation of several key components. The connection between the connecting rod 405 and the main rotating shaft 20 ensures that the rotational motion of the main rotating shaft 20 can be directly transmitted to the sliding component 50, thereby simplifying the transmission path and reducing the complexity of traditional multi-stage transmission. The slot 5071 on the sliding component 50 engages with the gear teeth of the sector gear 406, which can precisely guide the movement of the sliding component 50 when the auxiliary rotating shaft 30 rotates, avoiding jamming or offset during the movement. The support part 607 on the fixed bracket 60 provides a stable mounting base for the torsion spring 70, and the torsion spring 70, through the action part 4061, engages with the sector gear 406, which can automatically reset the sector gear 406 after the opening and closing operation, thereby enhancing the reliability and fault tolerance of the system. In addition, when the main rotating shaft 20 fails, the auxiliary rotating shaft 30 can still push the sliding component 50 to complete the opening and closing operation through the engagement of the sector gear 406 and the slot 5071. This dual-shaft complementary mechanism significantly improves the redundancy performance of the system. Overall, this solution not only solves the problem of system failure caused by damage to a single axis, but also reduces assembly difficulty and maintenance costs by simplifying the structure, while improving the operational stability and reliability of the manual operating mechanism.

[0047] Similarly, this application further proposes a fixed bracket 60 including a main board 601 and side legs for clamping with the circuit breaker housing 10.

[0048] This application further proposes a fixed bracket 60 including a main board 601 and side legs, the side legs being used to clamp the circuit breaker housing 10. The side legs include a first leg, a second leg, a third leg, and a fourth leg, with the first and second legs on the same side, and the third and fourth legs on the same side. The sliding assembly 50 includes a first guide rail 501, a second guide rail 502, and a sliding plate slidably disposed on the first guide rail 501 and the second guide rail 502. The sliding plate includes an upper sliding bracket 507 and a lower sliding block 508 connected to each other. The upper sliding bracket 507 has a through hole 5072, and the lower sliding block 508 has a corresponding through hole 5072. 72 forms a groove 5081 to accommodate the other end of the connecting rod 405. The lower sliding block 508 has a first limiting block 505 and a second limiting block 506 on the side facing the handle. The first limiting block 505 and the second limiting block 506 are used to accommodate the handle. The first guide rail 501 is located between the first support leg and the third support leg. The second guide rail 502 is located between the second support leg and the fourth support leg. The first guide rail 501 and the second guide rail 502 are set through the upper sliding bracket 507. The slot 5071 is opened in the upper sliding bracket 507.

[0049] In detail, this solution improves assembly accuracy and motion stability by optimizing the structural layout of the fixed bracket 60. The main board 601 serves as the basic support surface, bearing the entire sliding assembly 50's movement. The side supports adopt a symmetrical layout, with the first and second supports on the same side, and the third and fourth supports on the same side. This paired arrangement provides a precise positioning reference for the guide rails. The first guide rail 501 is located between the first and third supports, and the second guide rail 502 is located between the second and fourth supports, ensuring that the two guide rails are strictly parallel, thereby preventing skewing or jamming during the movement of the sliding assembly 50. The upper sliding bracket 507 has a through hole 5072, forming a linkage with the connecting rod 405, while the groove 5081 structure of the lower sliding block 508 serves to fix the end of the connecting rod 405, preventing wobbling during operation. The space between the first limit block 505 and the second limit block 506 is designed according to the handle size to ensure accurate handle positioning. The slot 5071 matches the tooth shape of the sector gear 406, achieving a tight fit during rotation, pushing the sliding component 50 to move smoothly and complete the opening and closing action.

[0050] The above technical solution not only solves the assembly problem caused by the non-standard layout of the support feet, but also significantly improves the stability and reliability of the movement of the sliding component 50, reduces maintenance costs, and ensures the accuracy and efficiency of the handle operation.

[0051] In Embodiments 1 and 2, this application further proposes the above-mentioned manual operation mechanism. A fixing plate 80 is provided on the first side and the second side of the fixing bracket 60. The first side and the second side are arranged opposite to each other. The fixing plate 80 is fixedly fastened to the side support leg. A snap-fit ​​positioning plate 90 is also provided on the inner side of the fixing plate 80. A snap-fit ​​100 is provided between the snap-fit ​​positioning plates 90.

[0052] Specifically, the fixing plate 80 refers to a structural component used to enhance the overall stability of the fixing bracket 60. It can be made of materials such as metal sheet or engineering plastic, and is fixedly connected to the side support legs by means of bolts, welding, or snap-fit ​​100. The snap-fit ​​positioning plate 90 is an auxiliary positioning device, which can be a thin plate structure with grooves or protrusions, used to limit and guide the snap-fit ​​100. The snap-fit ​​100 is an elastic locking component, which can be implemented in the form of spring steel sheet, plastic spring sheet, etc., with the purpose of providing a reliable locking function and facilitating disassembly.

[0053] In detail, the fixed plate 80 significantly improves the overall rigidity of the fixed bracket 60, thus preventing deformation problems caused by long-term use. The cooperative design of the snap-fit ​​positioning plate 90 and snap-fit ​​100 facilitates the assembly of the fixed bracket 60 and ensures the reliability of the connection between the fixed plate 80 and the side support. In practical applications, when the fixed plate 80 is connected to the side support via a fixed snap-fit ​​method, the snap-fit ​​positioning plate 90 effectively restricts the position of the snap-fit ​​100, preventing it from shifting and thus ensuring the stability of the fixed bracket 60. Furthermore, this design simplifies the assembly process and reduces operational difficulty, making it particularly suitable for scenarios requiring frequent disassembly and assembly. Through the above technical solutions, not only is the structural strength of the manual operating mechanism enhanced, but assembly efficiency is also improved, further optimizing overall performance.

[0054] As used in the specification and claims, certain terms refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0055] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A manual operating mechanism suitable for handle operation, characterized in that, The device includes a housing. A first through hole is provided on the top end face of the housing, and a main rotating shaft is disposed in the first through hole. A second through hole is provided on the side of the housing, and a secondary rotating shaft is disposed in the second through hole. The secondary rotating shaft is perpendicular to the main rotating shaft. The main rotating shaft and the secondary rotating shaft are connected to a drive assembly. The drive assembly is linked to a sliding assembly for driving the handle to open and close the circuit breaker. A fixed bracket is provided inside the housing to support the sliding assembly. When the main rotating shaft or the secondary rotating shaft rotates in a first direction, the drive assembly drives the sliding assembly and drives the handle to close the circuit breaker. When the main rotating shaft or the secondary rotating shaft rotates in a second direction, the drive assembly drives the sliding assembly and drives the handle to open the circuit breaker.

2. The manual operating mechanism suitable for handle operation according to claim 1, characterized in that, The drive assembly includes a first gear, a second gear, and a transmission rod located on the extension of the first gear. The first gear is linked to the main shaft, and the second gear is linked to the auxiliary shaft. The first gear and the second gear mesh. The first gear has an extension, and an opening is formed on the extension. A transmission rod is disposed in the opening. A guide groove is formed on the fixed bracket, and the transmission rod passes through the guide groove and is linked to the sliding assembly.

3. A manual operating mechanism suitable for handle operation according to claim 2, characterized in that, The fixed bracket includes a main board and side legs. The side legs are used to clamp the circuit breaker housing, and the guide groove is formed on the main board.

4. A manual operating mechanism suitable for handle operation according to claim 3, characterized in that, The side support includes a first support, a second support, a third support, and a fourth support. The first and second supports are located on the same side, and the third and fourth supports are located on the same side. The sliding assembly includes a first guide rail, a second guide rail, and a sliding block slidably disposed on the first and second guide rails. The sliding block has a first limiting block and a second limiting block formed on the side facing the handle, and the first and second limiting blocks are used to accommodate the handle. The sliding block has a recessed groove formed on the side away from the handle, and one end of the transmission rod is located in the recessed groove. The first guide rail is located between the first and third supports, and the second guide rail is located between the second and fourth supports. The first and second guide rails are disposed through the sliding block.

5. A manual operating mechanism suitable for handle operation according to claim 3, characterized in that, The first gear and the second gear are bevel gears.

6. A manual operating mechanism suitable for handle operation according to claim 1, characterized in that, The drive assembly includes a connecting rod connected to the main rotating shaft and a sector gear mounted on the secondary rotating shaft. The connecting rod is located within the fixed bracket and is linked with the sliding assembly. When the main rotating shaft rotates, it drives the connecting rod and simultaneously drives the sliding assembly, which in turn drives the handle to open and close the brake. The portion of the sliding assembly near the sector gear has a groove that matches the teeth of the sector gear. During rotation, the teeth engage with the groove to push the sliding assembly to move and achieve the opening and closing of the brake. The fixed bracket has a support portion for placing a torsion spring. The torsion spring engages with the sector gear and provides a restoring force to the sector gear. The sector gear has a support portion near its top for abutting against one end of the torsion spring.

7. A manual operating mechanism suitable for handle operation according to claim 6, characterized in that, The fixed bracket includes a main board and side legs, which are used to clamp the circuit breaker housing.

8. A manual operating mechanism suitable for handle operation according to claim 7, characterized in that, The side support includes a first support, a second support, a third support, and a fourth support. The first and second supports are located on the same side, as are the third and fourth supports. The sliding assembly includes a first guide rail, a second guide rail, and a sliding plate slidably disposed on the first and second guide rails. The sliding plate includes an upper sliding bracket and a lower sliding block connected to each other. The upper sliding bracket has a through hole, and the lower sliding block has a groove corresponding to the through hole to accommodate the other end of the connecting rod. The lower sliding block has a first limiting block and a second limiting block on the side facing the handle, and the first limiting block and the second limiting block are used to accommodate the handle. The first guide rail is located between the first and third supports, and the second guide rail is located between the second and fourth supports. The first and second guide rails pass through the upper sliding bracket, and the groove is formed in the upper sliding bracket.

9. A manual operating mechanism suitable for handle operation according to claim 4 or 8, characterized in that, The fixed bracket is provided with a fixing plate on the first side and the second side, the first side and the second side are arranged opposite to each other, the fixing plate is fixedly fastened to the side support leg, and a snap-fit ​​positioning plate is also provided on the inner side of the fixing plate, and a snap-fit ​​is provided between the snap-fit ​​positioning plates.

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