An operating mechanism for a circuit breaker

Abstract

The invention provides an operating mechanism of a circuit breaker, belonging to the technical field of operating mechanisms of protection switches. The operating mechanism comprises a substrate mounted on the back of an electrical cabinet panel, a protruding mounting plate is provided on the substrate, a clearance space is formed between the substrate and the electrical cabinet panel by the mounting plate, the substrate is connected with a support mounting cover through a plurality of elastic telescopic rods, an upper mounting plate and a lower mounting plate are provided on the side of the support mounting cover facing the circuit breaker, a pressing space is formed between the upper mounting plate, the lower mounting plate and the support mounting cover, inner side plates are provided on both sides of the support mounting cover, outer side plates opposite to the inner side plates are provided on both sides of the substrate, buckle assemblies are provided at upper and lower ends of the two inner side plates, buckle grooves are provided at upper and lower ends of the two outer side plates; the buckle assembly comprises a rotating seat extending toward the side where the circuit breaker is located, a rotating wheel is elastically rotatably connected to the rotating seat, a rotating rod along its radial direction is provided on the rotating wheel, the rotating wheel is a cam, and the radius of the rotating wheel gradually decreases in the opposite direction of the rotating direction under pressure.

Description

Technical Field

[0001] The present invention relates to the technical field of operating mechanisms of protection switches, and in particular to an operating mechanism of a circuit breaker. Background Technology

[0002] The operating mechanism of the circuit breaker is used to manipulate the circuit breaker to realize indirect switching, thereby ensuring that the switch operation is labor-saving, convenient, and safer. The operating mechanism of the circuit breaker is used to control the closing and opening operations of the circuit breaker, and is mainly composed of a handle and a transmission mechanism.

[0003] For example, a Chinese patent with application number CN2024106480167 discloses such a switch operating mechanism for a circuit breaker. One point that is the same as the operating mechanisms of many current mainstream circuit breakers is that the support mounting cover needs to be installed on the front of the circuit breaker, so that the front of the circuit breaker is almost completely covered by the support mounting cover. Then, when the circuit breaker needs to be replaced or repaired, the operating mechanism of the circuit breaker has to be removed first, which is not very convenient. SUMMARY OF THE INVENTION

[0004] The present invention aims to solve the above technical problems and provide an operating mechanism for a circuit breaker.

[0005] The technical solution of the present invention is an operating mechanism of a circuit breaker, comprising a substrate mounted on the back of an electrical cabinet panel, the substrate being provided with a protruding mounting plate, the mounting plate forming a clearance space between the substrate and the electrical cabinet panel, the substrate being connected to a support mounting cover through a plurality of elastic telescopic rods, the support mounting cover being provided with an upper plate and a lower plate on the side facing the circuit breaker, a pressing space being formed between the upper plate, the lower plate and the support mounting cover, inner plates being provided on both sides of the support mounting cover, outer plates being provided on both sides of the substrate and being opposite to the inner plates, buckle assemblies being provided at the upper and lower ends of the two inner plates, buckle grooves being provided at the upper and lower ends of the two outer plates;

[0006] The rotary buckle assembly includes a rotating seat extending toward the side where the circuit breaker is located, a rotating wheel is elastically rotatably connected to the rotating seat, a rotating rod is provided on the rotating wheel along its radial direction, the rotating wheel is a cam, when the rotating wheel is not pressed, the rotating rod is parallel to the supporting mounting cover, the maximum radius of the rotating wheel points to the side where the circuit breaker is located, and the end of the rotating wheel pointing to the side where the circuit breaker is located protrudes relative to the upper plate or the lower plate, the radius of the rotating wheel gradually decreases in the opposite direction of the rotating direction of the rotating wheel under pressure, and when the rotating wheel is pressed and rotated 90 degrees, the end of the rotating wheel pointing to the side where the circuit breaker is located is flush with the upper plate or the lower plate;

[0007] A driving rod is provided on the side of the support and installation cover facing the base plate, and a driving assembly driven by the driving rod is provided on the side of the support and installation cover facing the circuit breaker. A spring assembly is connected between the driving rod and the base plate, and an operating hole is provided on the base plate. The operating rod passes through the operating hole and cooperates with the driving rod. An operating handle is provided on the operating rod, and each of the buckle assemblies surrounds the driving rod.

[0008] As an implementation mode, the elastic telescopic rod comprises an outer rod barrel and an inner rod core, the outer rod barrel and the inner rod core are elastically connected, the outer rod barrel is connected to the base plate, and the inner rod core is connected to the support mounting cover.

[0009] As an implementation method, two spaced protrusions are provided near the end of the rotating rod. When the rotating wheel is pressed and rotated 90 degrees, the end of the rotating rod rotates into the clearance space, and the two protrusions are in close contact with the two sides of the buckle groove.

[0010] As an embodiment, the operating rod is a square rod, and the driving rod has a square opening at one end facing the square rod to match the operating rod.

[0011] As an implementation mode, the spring assembly includes an inner end ring, an outer end ring and a connecting tension spring, the inner end ring is connected to the driving rod, the outer end ring is connected to the base plate, and the connecting tension spring connects the inner end ring and the outer end ring.

[0012] As an embodiment, the drive assembly includes a sliding opening provided on the support and mounting cover, the sliding opening extending in a vertical direction, and also includes a slide plate provided on the side of the support and mounting cover facing the circuit breaker, the slide plate and the sliding opening are movably connected, a connecting column is provided on the side of the slide plate close to the lower plate, a connecting buckle is provided on the side of the support and mounting cover connected to the lower plate, a connecting spring is provided between the connecting column and the connecting buckle, a movable opening is provided on the side of the slide plate close to the upper plate, the movable opening extends in a horizontal direction, a rotating plate is provided on the side of the support and mounting cover facing the circuit breaker, the rotating plate is driven by the driving rod, a driving end extending into the movable opening is provided at the end of the rotating plate, the drive assembly also includes a switch opening provided on the support and mounting cover, the switch opening is located between the two sliding openings, and a handle driving portion for the handle of the circuit breaker to extend into is also provided on the slide plate, and the handle driving portion passes through the switch opening.

[0013] As an implementation method, a plurality of sliding blocks are provided in the sliding opening, and the sliding blocks are fixedly connected to the sliding plate.

[0014] As an implementation method, the connecting spring is a hook spring.

[0015] As an implementation mode, a hanging opening is provided on one side of the support mounting cover connected to the lower mounting plate, and the connecting buckle is arranged in the hanging opening.

[0016] As an implementation mode, the two ends of the connecting spring are detachably connected to the connecting column and the connecting buckle respectively.

[0017] Compared with the prior art, the beneficial effect of the present invention is that the operating mechanism of the circuit breaker is different from the conventional operating mechanism of the circuit breaker which is installed on the circuit breaker to cover the circuit breaker. The operating mechanism of the circuit breaker is installed on the back of the electrical cabinet panel. That is, the base plate is installed on the electrical cabinet through the mounting plate, so that a clearance space is formed between the base plate and the electrical cabinet panel. The operation method is also different from the conventional direct rotation of the operating handle. Specifically, after inserting the operating rod and the operating handle, press inward first to press the support mounting cover onto the circuit breaker. Before the upper and lower plates of the support mounting cover are attached to the surface of the circuit breaker, the rotating rods of the four sets of rotating buckle assemblies are rotated 90 degrees, so as to be stuck in the buckle grooves on all sides. The support mounting cover and the base plate are locked by the four sets of rotating buckle assemblies, and the pressure between the support mounting cover and the circuit breaker is matched to strengthen the support structure of the support mounting cover. Then, by rotating the operating handle, the rotating plate is controlled to rotate with the driving rod, and the slide plate can slide up and down along the sliding port through the cooperation between the driving end and the movable port. Because the handle of the circuit breaker is inserted into the handle driving part, the sliding of the slide plate controls the switch of the circuit breaker. Therefore, by changing the installation mode and action mode of the operating mechanism of the circuit breaker, when the electrical cabinet is opened for maintenance, the circuit breaker is open and not covered. Brief Description of the Figures

[0018] Figure 1 A schematic diagram of the first assembly of the operating mechanism of the circuit breaker and the circuit breaker provided in the embodiment of the present invention;

[0019] Figure 2 A second assembly schematic diagram of the operating mechanism of the circuit breaker and the circuit breaker provided in the embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the operating mechanism of the circuit breaker provided in the embodiment of the present invention.

[0021] In the figure: 1, substrate; 2, mounting plate; 3, relief space; 4, elastic telescopic rod; 5, support mounting cover; 6, upper attaching plate; 7, lower attaching plate; 8, pressing space; 9, inner side plate; 10, outer side plate; 11, rotating buckle assembly; 12, buckle groove; 13, rotating base; 14, rotating wheel; 15, rotating rod; 16, driving rod; 17, driving assembly; 18, spring assembly; 19, operation hole; 20, operation rod; 21, operation handle; 22, outer rod barrel; 23, inner rod core; 24, bump; 25, inner end ring; 26, outer end ring; 27, connecting tension spring; 28, sliding opening; 29, sliding plate; 30, connecting column; 31, connecting buckle; 32, connecting spring; 33, movable opening; 34, rotating plate; 35, driving end; 36, switch opening; 37, handle driving part; 38, slider; 39, hanging opening. Detailed implementation mode

[0022] The following will clearly and completely describe the above and other implementation modes and advantages of the present invention with reference to the accompanying drawings. Obviously, the described implementation modes are only partial implementation modes of the present invention, rather than all implementation modes.

[0023] In one implementation mode, as Figures 1 to 3 shown.

[0024] The operating mechanism of the circuit breaker provided in this embodiment includes a substrate 1 installed on the back of the electrical cabinet panel, a protruding mounting plate 2 is provided on the substrate 1, and the mounting plate 2 forms a clearance space 3 between the substrate 1 and the electrical cabinet panel, the substrate 1 is connected to a support mounting cover 5 through a plurality of elastic telescopic rods 4, an upper mounting plate 6 and a lower mounting plate 7 are provided on the side of the support mounting cover 5 facing the circuit breaker, a pressing space 8 is formed between the upper mounting plate 6, the lower mounting plate 7 and the support mounting cover 5, inner plates 9 are provided on both sides of the support mounting cover 5, outer plates 10 opposite to the inner plates 9 are provided on both sides of the substrate 1, buckle assemblies 11 are provided at the upper and lower ends of the two inner plates 9, and buckle grooves 12 are provided at the upper and lower ends of the two outer plates 10; the buckle assembly 11 includes a rotating seat 13 extending to the side where the circuit breaker is located, a rotating wheel 14 is elastically rotatably connected to the rotating seat 13, and a rotating rod 15 along its radial direction is provided on the rotating wheel 14, and the rotating wheel 14 is a cam. When the rotating wheel When 14 is not pressed, the rotating rod 15 is parallel to the supporting and mounting cover 5, the maximum radius of the rotating wheel 14 points to the side where the circuit breaker is located, and the end of the rotating wheel 14 pointing to the side where the circuit breaker is located protrudes relative to the upper plate 6 or the lower plate 7, and the radius of the rotating wheel 14 gradually decreases in the opposite direction of the rotating direction of the rotating wheel 14 under pressure. When the rotating wheel 14 is pressed and rotated 90 degrees, the end of the rotating wheel 14 pointing to the side where the circuit breaker is located is flush with the upper plate 6 or the lower plate 7; a driving rod 16 is provided on the side of the supporting and mounting cover 5 facing the substrate 1, and a driving assembly 17 driven by the driving rod 16 is provided on the side of the supporting and mounting cover 5 facing the circuit breaker, a spring assembly 18 is connected between the driving rod 16 and the substrate 1, an operating hole 19 is opened on the substrate 1, an operating rod 20 passes through the operating hole 19 and cooperates with the driving rod 16, an operating handle 21 is provided on the operating rod 20, and each rotating buckle assembly 11 surrounds the driving rod 16.

[0025] In this embodiment, the operating mechanism of the circuit breaker is different from the conventional operating mechanism of the circuit breaker which is installed on the circuit breaker and covers the circuit breaker. The operating mechanism of the circuit breaker is installed on the back of the electrical cabinet panel. That is, the base plate 1 is installed on the electrical cabinet through the mounting plate 2, so that a clearance space 3 is formed between the base plate 1 and the electrical cabinet panel. The operating method is also different from the conventional direct rotation operating handle.

[0026] In this embodiment, after inserting the operating rod 20 and the operating handle 21, first press inward to press the support and mounting cover 5 onto the circuit breaker. Before the upper plate 6 and the lower plate 7 of the support and mounting cover 5 are attached to the surface of the circuit breaker, the rotating rod 15 of the four sets of rotating buckle assemblies 11 rotates 90 degrees. Because when the rotating wheel 14 is not pressed, the maximum radius of the rotating wheel 14 points to the side where the circuit breaker is located, and the end of the rotating wheel 14 pointing to the side where the circuit breaker is located protrudes relative to the upper plate 6 or the lower plate 7, and the radius of the rotating wheel 14 gradually decreases in the opposite direction of the rotating wheel 14 being pressed and rotating. When the rotating wheel 14 is pressed and rotated 90 degrees, the end of the rotating wheel 14 pointing to the side where the circuit breaker is located is flush with the upper plate 6 or the lower plate 7. Therefore, the pressing process causes the rotating rod 15 to rotate 90 degrees, thereby being stuck in the buckle grooves 12 on all sides. The support and mounting cover 5 and the base plate 1 are locked by four sets of turn buckle assemblies 11, and the pressure between the support and mounting cover 5 and the circuit breaker is matched to strengthen the support structure of the support and mounting cover 5. Then, by rotating the operating handle 21, the control plate 34 rotates along the driving rod 16, and the slide plate 29 can slide up and down along the sliding opening 28 through the cooperation of the driving end 35 and the movable opening 33. Because the handle of the circuit breaker is inserted into the handle driving part 37, the sliding of the slide plate 29 controls the switch of the circuit breaker.

[0027] In this embodiment, by changing the installation mode and action mode of the operating mechanism of the circuit breaker, when the electrical cabinet is opened for maintenance, the circuit breaker is open and not covered.

[0028] In one embodiment, if Figure 2 As shown.

[0029] The operating mechanism of the circuit breaker provided in this embodiment has an elastic telescopic rod 4 including an outer rod barrel 22 and an inner rod core 23, the outer rod barrel 22 and the inner rod core 23 are elastically connected, the outer rod barrel 22 is connected to the base plate 1, and the inner rod core 23 is connected to the support mounting cover 5.

[0030] In this embodiment, the elastic telescopic rod 4 is an elastically connected outer rod tube 22 and inner rod core 23, and together with the spring assembly 18, forms an elastic connection structure that allows the support mounting cover 5 to move smoothly inward when the support mounting cover 5 is pressed.

[0031] In one embodiment, if Figure 2 and Figure 3 As shown.

[0032] The operating mechanism of the circuit breaker provided in this embodiment has two spaced protrusions 24 near the end of the rotating rod 15. When the rotating wheel 14 is pressed and rotated 90 degrees, the end of the rotating rod 15 rotates into the clearance space 3, and the two protrusions 24 are closely contacted with the two sides of the buckle groove 12.

[0033] In this embodiment, after the rotating rod 15 rotates 90 degrees, the cooperation between the rotating rod 15 and the buckle groove 12 forms a restriction on the possible positional deviation of the support mounting cover 5 in the rotation direction of the operating handle 21. The close contact between the two bumps 24 and the buckle groove 12 also forms a restriction on the possible positional deviation of the support mounting cover 5 in the direction parallel to the substrate 1. And each rotating buckle assembly 11 is arranged around the driving rod 16, which is exactly arranged relative to the rotation positions of the operating rod 20 and the operating handle 21, in order to better restrict the positional deviation of the support mounting cover 5 during the rotation of the operating handle 21.

[0034] In one embodiment, as Figure 2 shown.

[0035] For the operating mechanism of the circuit breaker provided in this embodiment, the operating rod 20 is a square rod, and a square opening for cooperating with the operating rod 20 is provided at one end of the driving rod 16 facing the square rod.

[0036] In this embodiment, the operating rod 20 is a square rod, and its shape is relatively common. By inserting the operating rod 20 into the square opening of the operating rod 20 that matches it, the driving rod 16 can be rotated by operating the operating handle 21.

[0037] In one embodiment, as Figure 3 shown.

[0038] For the operating mechanism of the circuit breaker provided in this embodiment, the spring assembly 18 includes an inner end ring 25, an outer end ring 26, and a connecting tension spring 27. The inner end ring 25 is connected to the driving rod 16, the outer end ring 26 is connected to the substrate 1, and the connecting tension spring 27 connects the inner end ring 25 and the outer end ring 26.

[0039] In this embodiment, the spring assembly 18 is composed of an inner end ring 25, an outer end ring 26, and a connecting tension spring 27. The inner end ring 25 and the outer end ring 26 mainly play a connecting role, and are respectively used to connect the two ends of the tension spring 27 to the driving rod 16 and the substrate 1.

[0040] In one embodiment, as Figure 2 and Figure 3 shown.

[0041] The operating mechanism of the circuit breaker provided by this embodiment, its driving component 17 includes a sliding port 28 opened on the support mounting cover 5, the sliding port 28 extends along the vertical direction, and further includes a sliding plate 29 provided on the side of the support mounting cover 5 facing the circuit breaker. The sliding plate 29 is movably connected to the sliding port 28. A connecting column 30 is provided on the side of the sliding plate 29 close to the lower attaching plate 7, and a connecting buckle 31 is provided on the side of the support mounting cover 5 connecting to the lower attaching plate 7. A connecting spring 32 is provided between the connecting column 30 and the connecting buckle 31. An activity port 33 is opened on the side of the sliding plate 29 close to the upper attaching plate 6, and the activity port 33 extends along the horizontal direction. A rotating plate 34 is provided on the side of the support mounting cover 5 facing the circuit breaker. The rotating plate 34 is driven by the driving rod 16, and a driving end 35 extending into the activity port 33 is provided at the end of the rotating plate 34. The driving component 17 further includes a switch port 36 opened on the support mounting cover 5. The switch port 36 is located between the two sliding ports 28. A handle driving part 37 for the handle of the circuit breaker to extend into is further provided on the sliding plate 29, and the handle driving part 37 penetrates through the switch port 36.

[0042] In this embodiment, the driving component 17 includes a sliding port 28, a sliding plate 29, a connecting column 30, a connecting buckle 31, a connecting spring 32, an activity port 33, a rotating plate 34, a driving end 35, a switch port 36, and a handle driving part 37, etc. The driving component 17 is driven by the driving rod 16 to control the opening and closing of the circuit breaker. Specifically, rotate the operating handle 21 to control the rotating plate 34 to rotate along with the driving rod 16. Since the sliding plate 29 is slidably connected to the two sliding ports 28 by itself, and due to the cooperation between the driving end 35 and the activity port 33, the rotation of the rotating plate 34 will control the sliding of the sliding plate 29 along the sliding port 28, and finally control the switch of the circuit breaker. The connecting spring 32 connected between the connecting column 30 and the connecting buckle 31 plays a role in resetting the sliding plate 29. Matched with this, when the operating handle 21 rotates to make the sliding plate 29 move upward, self-holding can be formed to maintain the current position of the sliding plate 29.

[0043] In one embodiment, as Figure 2 shown.

[0044] For the operating mechanism of the circuit breaker provided by this embodiment, a plurality of sliders 38 are provided in the sliding port 28, and the sliders 38 are fixedly connected to the sliding plate 29.

[0045] In this embodiment, the slider 38 enables the sliding connection between the sliding plate 29 and the sliding port 28.

[0046] In one embodiment, the connecting spring 32 of the operating mechanism of the circuit breaker is a hook spring. The two ends of the connecting spring 32 are respectively detachably connected to the connecting column 30 and the connecting buckle 31.

[0047] In one embodiment, as Figure 2 shown.

[0048] For the operating mechanism of the circuit breaker provided in this embodiment, a hanging opening 39 is formed on one side of the support mounting cover 5 connected to the lower attaching plate 7, and the connecting buckle 31 is arranged in the hanging opening 39.

[0049] In this embodiment, a hanging opening 39 is formed on one side of the support mounting cover 5 connected to the lower attaching plate 7, and the hanging opening 39 provides space for one end of the connecting spring 32 to be connected.

[0050] The above specific embodiments further elaborate on the invention purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above is only the specific embodiment of the present invention and is not used to limit the protection scope of the present invention. In particular, for those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An operating mechanism of a circuit breaker, characterized in that: The invention comprises a base plate (1) mounted on the back of an electrical cabinet panel, the base plate (1) being provided with a protruding mounting plate (2), the mounting plate (2) forming a clearance space (3) between the base plate (1) and the electrical cabinet panel, the base plate (1) being connected to a support mounting cover (5) via a plurality of elastic telescopic rods (4), the support mounting cover (5) being provided with an upper mounting plate (6) and a lower mounting plate (7) on the side facing the circuit breaker, a pressing space (8) being formed between the upper mounting plate (6), the lower mounting plate (7) and the support mounting cover (5), inner side plates (9) being provided on both sides of the support mounting cover (5), outer side plates (10) being opposite to the inner side plates (9) being provided on both sides of the base plate (1), buckle assemblies (11) being provided at the upper and lower ends of the two inner side plates (9), buckle grooves (12) being provided at the upper and lower ends of the two outer side plates (10); The rotating buckle assembly (11) comprises a rotating seat (13) extending toward the side where the circuit breaker is located, a rotating wheel (14) being elastically rotatably connected to the rotating seat (13), a rotating rod (15) being provided on the rotating wheel (14) along its radial direction, the rotating wheel (14) being a cam, when the rotating wheel (14) is not pressed, the rotating rod (15) and the supporting mounting cover (5) are parallel, the maximum radius of the rotating wheel (14) points to the side where the circuit breaker is located, and the end of the rotating wheel (14) pointing to the side where the circuit breaker is located protrudes relative to the upper plate (6) or the lower plate (7), the radius of the rotating wheel (14) gradually decreases in the direction opposite to the direction of rotation of the rotating wheel (14) under pressure, and when the rotating wheel (14) is pressed and rotated 90 degrees, the end of the rotating wheel (14) pointing to the side where the circuit breaker is located is flush with the upper plate (6) or the lower plate (7); A driving rod (16) is provided on the side of the support and installation cover (5) facing the base plate (1), and a driving assembly (17) driven by the driving rod (16) is provided on the side of the support and installation cover (5) facing the circuit breaker. A spring assembly (18) is connected between the driving rod (16) and the base plate (1). An operating hole (19) is provided on the base plate (1), and an operating rod (20) passes through the operating hole (19) and cooperates with the driving rod (16). An operating handle (21) is provided on the operating rod (20), and each of the buckle assemblies (11) surrounds the driving rod (16).

2. The operating mechanism of the circuit breaker according to claim 1, characterized in that: The elastic telescopic rod (4) comprises an outer rod barrel (22) and an inner rod core (23), the outer rod barrel (22) and the inner rod core (23) are elastically connected, the outer rod barrel (22) is connected to the base plate (1), and the inner rod core (23) is connected to the support mounting cover (5).

3. The operating mechanism of the circuit breaker according to claim 1, characterized in that: Two spaced protrusions (24) are provided near the end of the rotating rod (15). When the rotating wheel (14) is pressed and rotated 90 degrees, the end of the rotating rod (15) rotates into the clearance space (3) and the two protrusions (24) are in close contact with the two sides of the buckle groove (12).

4. The operating mechanism of the circuit breaker according to claim 1, characterized in that: The operating rod (20) is a square rod, and the driving rod (16) is provided with a square opening at one end facing the square rod to match the operating rod (20).

5. The operating mechanism of the circuit breaker according to claim 1, characterized in that: The spring assembly (18) comprises an inner end ring (25), an outer end ring (26) and a connecting tension spring (27), wherein the inner end ring (25) is connected to the driving rod (16), the outer end ring (26) is connected to the base plate (1), and the connecting tension spring (27) connects the inner end ring (25) and the outer end ring (26).

6. The operating mechanism of the circuit breaker according to claim 1, characterized in that: The driving assembly (17) comprises a sliding opening (28) provided on the supporting and mounting cover (5), the sliding opening (28) extending in a vertical direction, and also comprises a sliding plate (29) provided on a side of the supporting and mounting cover (5) facing the circuit breaker, the sliding plate (29) and the sliding opening (28) being movably connected, a connecting column (30) being provided on a side of the sliding plate (29) close to the lower plate (7), a connecting buckle (31) being provided on a side of the supporting and mounting cover (5) connected to the lower plate (7), a connecting spring (32) being provided between the connecting column (30) and the connecting buckle (31), and a connecting column (30) and a connecting buckle (31) being provided on a side of the sliding plate (29) close to the upper plate (6). A movable opening (33) is provided, the movable opening (33) extending in a horizontal direction; a rotating plate (34) is provided on the side of the support and installation cover (5) facing the circuit breaker, the rotating plate (34) is driven by the driving rod (16), and a driving end (35) extending into the movable opening (33) is provided at the end of the rotating plate (34); the driving assembly (17) further comprises a switch opening (36) provided on the support and installation cover (5), the switch opening (36) being located between the two sliding openings (28); and a handle driving portion (37) for the handle of the circuit breaker to extend into is also provided on the sliding plate (29), and the handle driving portion (37) passes through the switch opening (36).

7. The operating mechanism of the circuit breaker according to claim 6, characterized in that: A plurality of sliding blocks (38) are arranged in the sliding opening (28), and the sliding blocks (38) are fixedly connected to the sliding plate (29).

8. The operating mechanism of the circuit breaker according to claim 6, characterized in that: The connecting spring (32) is a hook spring.

9. The operating mechanism of the circuit breaker according to claim 6, characterized in that: A hanging opening (39) is provided on one side of the support and mounting cover (5) connected to the lower mounting plate (7), and the connecting buckle (31) is arranged in the hanging opening (39).

10. The operating mechanism of the circuit breaker according to claim 6, characterized in that: The two ends of the connecting spring (32) are respectively detachably connected to the connecting column (30) and the connecting buckle (31).

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