CN220774252U - Breaking interlocking structure of circuit breaker - Google Patents

Abstract

The utility model relates to the field of a low-voltage electrical appliance, in particular to a brake-separating interlocking structure of a circuit breaker, which comprises a drawer seat and a lever, wherein the drawer seat comprises a bottom plate assembly, a third gear and a first side plate, the bottom plate assembly comprises a main shaft structure, the third gear is pivoted on the first side plate, the main shaft structure is meshed with the third gear to drive the third gear to rotate, and the middle part of the lever is pivoted on the first side plate and is used for triggering a brake-separating half shaft of the circuit breaker body in the switching process of the circuit breaker body between a test position and a connection position; one end of the lever is in direct transmission fit with the third gear, and the other end of the lever is in direct transmission fit with the brake-separating half shaft of the breaker body to trigger the brake-separating half shaft; the opening interlocking structure is simple in structure and reliable in action.

Description

Breaking interlocking structure of circuit breaker

Technical Field

The utility model relates to the field of piezoelectric devices, in particular to a breaking interlocking structure of a circuit breaker.

Background

The drawer type breaker consists of a breaker body and a drawer seat. In the use process of the drawer type circuit breaker, in order to ensure the safety of operators, when the circuit breaker body swings in/out of the drawer seat, namely, when the circuit breaker body is switched among a connection position, a test position and a separation position, the plug-in contact cannot conduct current, and the operation safety is ensured as the plug-in contact cannot conduct current, and the circuit breaker body is in a disconnection state. In order to solve the above problems, the drawer type circuit breaker is provided with a breaking interlocking structure.

The existing drawer base circuit breaker has the following problems:

1. the structure of the opening interlocking structure is complex, and the transmission is unreliable.

2. In the brake-separating interlocking structure, gears matched with each other lack structural identification, dislocation easily occurs, and the brake-separating interlocking structure cannot work normally and also influences the installation efficiency.

Disclosure of Invention

The utility model aims to overcome at least one defect in the prior art and provides a breaking interlocking structure of a circuit breaker, which has a simple structure and reliable action.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the opening interlocking structure of the circuit breaker comprises a drawer seat and a lever, wherein the drawer seat comprises a bottom plate assembly, a third gear and a first side plate, the bottom plate assembly comprises a main shaft structure, the third gear is pivoted on the first side plate, the main shaft structure is meshed with the third gear to drive the third gear to rotate, and the middle part of the lever is pivoted on the first side plate and is used for triggering an opening half shaft of the circuit breaker body in the switching process of the circuit breaker body between a test position and a connection position; one end of the lever is in direct transmission fit with the third gear, and the other end of the lever is used for being in direct transmission fit with the brake-separating half shaft of the breaker body so as to trigger the brake-separating half shaft.

Further, the lever is further used for keeping the brake-separating half shaft at a brake-separating position in the process of switching the breaker body between the test position and the connection position;

the lever comprises a lever driven side edge, the third gear comprises a gear driving side edge, and the gear driving side edge is propped against the lever driven side edge to enable the lever to rotate so as to trigger the brake-separating half shaft.

Further, the lever also comprises a lever transition side edge, one end of the lever transition side edge is connected with one end of the lever driven side edge in a bending way, the third gear also comprises a gear transition side edge, and one end of the gear transition side edge is connected with one end of the gear driving side edge in a bending way; the gear transition side edge is used for being matched with the lever transition side edge relatively when the breaker body is in a connection position so as to allow the lever to reset; when the third gear rotates from the final position to the middle position, the gear driving side edge is contacted with the lever transition side edge after the gear transition side edge, and the lever driven side edge is contacted with the gear driving side edge after the lever transition side edge.

Further, the brake-separating interlocking structure further comprises a reset piece and a lever shaft, the lever is pivoted on the first side plate through the lever shaft, the reset piece is a torsion spring sleeved on the lever shaft, one end of the reset piece is matched with the lever, and the other end of the reset piece is matched with the first side plate.

Further, the lever further comprises a lever driving side edge for pressing a brake-separating half shaft arm of the brake-separating half shaft to enable the brake-separating half shaft to rotate.

Further, the lever is including the drive section, changeover portion and the installation section that link to each other in proper order, the drive section is equipped with the lever drive side edge, the installation section is equipped with the lever driven side edge with the lever changeover portion side edge, the lever driven side edge for the lever changeover portion side edge is close to the changeover portion setting, the lever passes through the installation section pivot sets up on the first curb plate, the drive section with the installation section sets up side by side, the drive section for the installation section is to keeping away from the direction skew of first curb plate.

Further, a lever hole is formed in one end, connected with the transition section, of the mounting section; the lever further comprises a reset section, the reset section and the transition section are respectively connected with two ends of the mounting section, and the reset section bends towards the side where the first side plate is located relative to the mounting section; the first side plate is provided with a limiting hole, the reset segment is inserted in the limiting hole and moves at the limit Kong Nabai, and the reset segment is in limiting fit with the side wall of the limiting hole to limit the lever at an initial position.

Further, the third gear is further provided with a first fool-proof structure, the main shaft structure comprises a second gear, the second gear is provided with a second fool-proof structure, and the second fool-proof structure is matched with the first fool-proof structure.

Further, the second gear further comprises a plurality of second gear teeth arranged on the peripheral outer edge of the second gear, and the second fool-proof structure is a semicircular tooth arranged on the peripheral outer edge of the second gear; the third gear further comprises a sliding groove and a plurality of third gear teeth arranged on the outer periphery of the third gear, the third gear teeth are meshed with the second gear teeth, the first fool-proof structure is a semicircular groove arranged on the outer periphery of the third gear, the third gear teeth, the first fool-proof structure, the gear transition side edge and the gear driving side edge are sequentially arranged on the outer periphery of the third gear, and the sliding groove is arranged in the middle of the third gear and located between the rotation center of the third gear and the outer periphery of the circumference.

Further, the brake release interlocking structure further comprises a limiting rod fixedly arranged on the first side plate, the limiting rod comprises a limiting rod pressing surface and a limiting rod avoiding groove, the limiting rod pressing surface is used for triggering the brake release half shaft to act in the switching process of the breaker body from the separation position to the test position, and the limiting rod avoiding groove is used for avoiding the brake release half shaft when the breaker body is in the test position, so that the breaker body is allowed to be switched on.

According to the brake-separating interlocking structure of the circuit breaker, the lever of the brake-separating interlocking structure is respectively and directly matched with the third gear and the brake-separating half shaft of the circuit breaker body in a driving way, so that the structure of the brake-separating interlocking structure is simplified, the transmission path from the third gear to the brake-separating half shaft is shortened, and the transmission efficiency, stability and reliability are improved.

In addition, second gear and third gear are equipped with the foolproof structure of mutually supporting, realize the accurate location of two, avoid the two dislocation of installation to lead to the unable normal work's of brake interlock structure condition of separating, are favorable to improving installation effectiveness moreover.

Drawings

Fig. 1 is a schematic structural view of a circuit breaker body of the present utility model;

FIG. 2 is a schematic view of the drawer base of the present utility model;

FIG. 3 is another schematic view of the drawer base of the present utility model;

FIG. 4 is an enlarged schematic view of the portion A of FIG. 3 in accordance with the present utility model;

fig. 5 is a schematic structural view of the opening interlocking structure of the present utility model, in which the breaker body is not yet installed in the drawer seat or is located at a separated position in the drawer seat;

FIG. 6 is a schematic structural view of the opening interlock structure of the present utility model with the gear drive side edge in initial contact with the lever driven side edge;

FIG. 7 is a schematic view of the opening interlock structure of the present utility model, with the gear drive side edge cooperating with the lever driven side edge to rotate the lever to the firing position, thereby firing the opening half shaft of the breaker body;

FIG. 8 is a schematic structural view of the opening interlocking structure of the present utility model, wherein the gear transition side edge is matched with the lever transition side edge, and the lever is in the resetting process to the initial position;

FIG. 9 is a schematic view of the opening interlock structure of the present utility model with the gear transition side edge opposite and disengaged from the lever transition side edge, with the lever reset to the initial position;

FIG. 10 is a schematic view of the lever structure of the present utility model;

fig. 11 is a schematic structural view of a third gear of the present utility model.

Description of the reference numerals

1, a drawer seat; 10 a first side panel; 100 limit holes; 11 a second side panel; 2, a breaker body; 20 brake-separating half shafts; a half-shaft arm for separating brake 200; 3 lever; 30 driving sections; 31 a transition section; 32 mounting sections; 33 reset segments; 34 lever holes; 35 lever drive side edges; 36 lever actuated side edges; 37 lever transition side edges; a 3s lever shaft; 4, resetting the piece; 5, a limit rod; 6 a shift structure; 60 tracks; 61 a slide plate; 7, a bottom plate assembly; 70 a spindle structure; 700 first gear; 701 a main shaft; 702 a second gear; 7020 a second fool-proof structure; 8, a third gear; 80 gear shaft holes; 81 sliding grooves; 82 gear drive side edges; 83 gear transition side edges; 84 a first fool-proof structure; 85 third gear teeth.

Detailed Description

The following examples are given in connection with the accompanying drawings to further illustrate specific embodiments of the breaking interlocking structure of the circuit breaker of the present utility model. The opening interlocking structure of the circuit breaker of the present utility model is not limited to the description of the following embodiments.

As shown in fig. 1-2, the utility model discloses a circuit breaker, in particular a drawer type circuit breaker, which comprises a drawer seat 1 and a circuit breaker body 2, wherein the circuit breaker body 2 is arranged in the drawer seat 1, and is driven by the drawer seat 1 to move among three working positions, namely a separation position, a test position and a connection position, and the circuit breaker body 2 can perform opening and closing operations in the three positions.

As shown in fig. 2-3, the drawer base 1 includes two sets of side plates, two sets of intermediate gears, two sets of displacement structures 6, and a bottom plate assembly 7 disposed between the two sets of side plates; the two side plates are respectively a first side plate 10 and a second side plate 11, the two sets of intermediate gears are respectively a third gear 8 pivoted on the first side plate 10 and a fourth gear (not shown in the figure) pivoted on the second side plate 11, and the two sets of displacement structures 6 are respectively arranged between the breaker body 2 and the corresponding side plates; the base plate assembly 7 comprises a base plate transmission structure and a main shaft structure 70, the base plate transmission structure is in transmission fit with the main shaft structure 70, the main shaft structure 70 is respectively meshed and matched with two groups of intermediate gears to drive the two groups of intermediate gears to rotate, and the two groups of intermediate gears are respectively connected with the circuit breaker body 2 in a driving manner through a group of shifting structures 6 to drive the circuit breaker body 2 to be sequentially switched among a separation position, a test position and a connection position. Further, the bottom plate transmission structure 70 includes a transmission screw 71 and a transmission rack (not shown in the figure), the transmission rack is driven by the transmission screw 71 to move along the axial direction of the transmission screw 71, the spindle structure 70 includes a spindle 701, a first gear 700 and two sets of second gears 702, both the first gear 700 and the two sets of second gears 702 are disposed on the spindle 701 to rotate synchronously therewith, the first gear 700 is engaged with the transmission rack, the two sets of second gears 702 are engaged with the two sets of intermediate gears respectively, and the transmission screw 71 is driven by an external force to rotate, so that the two sets of intermediate gears are driven by the spindle structure 70 to rotate; the displacement structure 6 comprises a rail 60 and a sliding plate 61 slidingly arranged on the rail 60, the rail 60 is arranged on the corresponding side plate, the sliding plate 61 is provided with a sliding plate shaft (not shown in the figure), the sliding plate shaft is inserted into a sliding groove 81 of the third gear 8, and the sliding plate 61 is also in transmission connection with the breaker body 2. The working process and principle of the drawer base 1 are known in the art and will not be described in detail here.

In order to improve the use safety of the circuit breaker, when the circuit breaker body 2 is switched between the separation position and the test position (namely, when the circuit breaker body 2 enters the test position from the separation position or enters the separation position from the test position) and is switched between the test position and the connection position (namely, when the circuit breaker body 2 enters the connection position from the test position or enters the separation position from the connection position), the circuit breaker body 2 needs to be ensured to enter the next working position or move out of the drawer seat 1 in a brake-separating state; the breaker of the utility model is provided with a brake-separating interlocking structure to solve the problems, and the breaker is specifically as follows:

as shown in fig. 2-3 and 5-7, the opening interlocking structure comprises a stop lever 5 fixedly arranged on a first side plate 10, the stop lever 5 comprises a stop lever contour 5o arranged on one side edge, the stop lever contour 5o comprises a stop lever pressing surface 50 and a stop lever avoiding groove 51, the stop lever pressing surface 50 is used for triggering the opening half shaft 20 of the circuit breaker body 2 to act in the switching process of the circuit breaker body 2 from the separation position to the test position, the circuit breaker body 2 can be opened or can not be closed, and the stop lever avoiding groove 51 is used for avoiding the opening half shaft 20 when the circuit breaker body 2 is in the test position, so that the circuit breaker body 2 is allowed to be closed. Further, the brake release half shaft 20 includes a brake release half shaft arm 200, the brake release half shaft arm 200 is pressed by the limiting rod pressing surface 50 to enable the brake release half shaft 20 to rotate in the switching process of the separation position and the test position of the breaker body 2, so that the brake release of the breaker body 2 is enabled or the brake cannot be closed, when the breaker body 2 is located at the test position, the limiting rod avoiding groove 51 is formed in the way of avoiding the brake release half shaft arm 200, the brake release half shaft arm 200 is not pressed by external force, the brake release half shaft 20 is reset, and the breaker body 2 can be closed. The limiting rod 5, the brake release half shaft 20 and the cooperation of the two are all prior art in the field, and will not be described in detail herein.

As shown in fig. 2-3 and 5-7, an important improvement of the opening interlocking structure is that: the opening interlocking structure further comprises a lever 3 arranged between the breaker body 2 and the first side plate 10, wherein the middle part of the lever 3 is pivoted on the first side plate 10 and is used for triggering an opening half shaft 20 in the switching process of the breaker body 2 between the test position and the connection position, namely, before the breaker body 2 is switched from the test position to the connection position or from the connection position to the test position, if the breaker body 2 is in a closing state, the opening half shaft 20 of the breaker body 2 is triggered by the lever 3 in the position switching process of the breaker body 2, so that the breaker body 2 is opened, and the breaker body 2 is prevented from entering a downward moving working position in the closing state; one end of the lever 3 is in direct transmission fit with the third gear 8, and the other end of the lever is in direct transmission fit with the brake-separating half shaft 20 to trigger the brake-separating half shaft 20. Further, the lever 3 is further configured to maintain the brake-separating half shaft 20 at the brake-separating position during the switching process of the breaker body 2 between the test position and the connection position, that is, to maintain the brake-separating half shaft 20 in the trigger state all the time during the moving process of the breaker body 2 between the test position and the connection position, so that the breaker body 2 cannot be switched on. The lever 3 is directly matched with the third gear 8 and the brake-separating half shaft 20 of the breaker body 2 in a driving way, so that the structure of the brake-separating interlocking structure is simplified, the transmission path from the third gear 8 to the brake-separating half shaft 20 is shortened, and the transmission efficiency, stability and reliability are improved.

As shown in fig. 5-11, the lever 3 includes a lever driven side edge 36, the third gear 8 includes a gear driving side edge 82, and the gear driving side edge 82 presses the lever driven side edge 36 to rotate the lever 3 to trigger the brake release half shaft 20. Specifically, during the movement of the breaker body 2 between the test position and the connection position, the gear driving side edge 82 keeps in contact with the lever driven side edge 36 to keep the lever 3 at the trigger position, and the lever 3 keeps the brake release half shaft 20 of the breaker body 2 at the trigger state; the gear driving side edge 82 is separated from contact with the lever driven side edge 36 when the breaker body 2 is in the test position and the connection position, the lever 3 is reset to release the brake release half shaft 20, the brake release half shaft 20 is reset from the trigger state, and the breaker body 2 can perform the brake closing operation.

Further, as shown in fig. 5-11, the lever 3 further includes a lever transition side edge 37, one end of the lever transition side edge 37 is connected with one end of the lever driven side edge 36 in a bending manner, the third gear 8 further includes a gear transition side edge 83, and one end of the gear transition side edge 83 is connected with one end of the gear driving side edge 82 in a bending manner; the gear transition edge 83 is adapted to cooperate opposite the lever transition edge 37 when the circuit breaker body 2 is in the connected position, allowing the lever 3 to be reset. Specifically, the third gear 8 rotates between the middle position and the final position to drive the breaker body 2 to switch between the test position and the connection position, and when the third gear 8 rotates to the final position, the lever transition side edge 37 is opposite to the gear transition side edge 83, so that the avoidance lever 3 resets the lever 3; when the third gear 8 rotates from the final position to the intermediate position and is used for driving the breaker body 2 to switch from the connecting position to the test position, the gear driving side edge 82 is contacted with the lever transition side edge 37 after the gear transition side edge 83, and the lever driven side edge 36 is contacted with the gear driving side edge 82 after the lever transition side edge 37, so that reliable and stable matching of the third gear 8 and the lever 3 is realized.

As shown in fig. 2-3 and 5-9, the brake release interlocking structure further comprises a reset piece 4 and a lever shaft 3s, the lever 3 is pivotally arranged on the first side plate 10 through the lever shaft 3s, the reset piece 4 is a torsion spring sleeved on the lever shaft 3s, one end of the torsion spring is matched with the lever 3, and the other end of the torsion spring is matched with the first side plate 10; the reset piece 4 applies a force to the lever 3 to reset the lever, so that the cooperation between the lever 3 and the brake release half shaft 20 is released, the brake release half shaft 20 is reset, and the breaker body 2 can perform a closing operation.

As other embodiments, the restoring member 4 is a tension spring, and the connecting section of the tension spring is respectively connected with the lever 3 and the first side plate.

As shown in fig. 3-4, the third gear 8 is further provided with a first foolproof structure 84, the main shaft structure 70 includes a second gear 702, the second gear 702 is provided with a second foolproof structure 7020, the second foolproof structure 7020 is matched with the first foolproof structure 84, in the installation process, accurate and efficient positioning of the third gear 8 and the second gear 702 is realized, the situation that the opening interlocking structure cannot work normally due to gear tooth dislocation meshing of the third gear 8 and the second gear 702 is avoided, the reliable work of the opening interlocking structure is ensured, and the installation efficiency is improved. Further, the second fool-proof structure 7020 is a semicircular tooth disposed on an outer edge of the second gear 702, and the first fool-proof structure 84 is a semicircular groove disposed on an outer edge of the circumference of the third gear 8.

As shown in fig. 5-10, is an embodiment of the lever 3.

The lever 3 comprises a driving section 30, a transition section 31 and a mounting section 32 which are sequentially connected, the driving section 30 is provided with a lever driving side edge 35, the mounting section 32 is provided with a lever driven side edge 36 and a lever transition side edge 37, the lever driven side edge 36 is arranged close to the transition section 31 relative to the lever transition side edge 37, the lever driven side edge 36 and the lever driving side edge 35 are sequentially arranged along the length direction of the lever 3, the lever transition side edge 37, the lever driven side edge 36 and the lever driving side edge 35 are arranged on the side edge of the lever 3 facing the third gear 8, the lever 3 is pivotally arranged on the first side plate 10 through the mounting section 32, the driving section 30 and the mounting section 32 are arranged side by side, the driving section 30 is offset relative to the mounting section 32 in a direction away from the first side plate 10, namely, the driving section 30 is offset relative to the mounting section 32 in a direction approaching the breaker body 2, the driving section 30 is enabled to be closer to the second side plate 11 of the drawer seat 1 relative to the mounting section 32, so that the lever driving side edge 35 of the driving section 30 is enabled to be in a reliable fit with the split-gate half shaft arm 200 of the split-gate half shaft 20, and the driving section 30 and the mounting section 32 are in a Z-shaped integral structure.

Further, as shown in fig. 10, a lever hole 34 is formed at an end of the mounting section 32 connected to the transition section 31, and the mounting section 32 is sleeved on the lever shaft 3s through the lever hole 34 so as to pivotally arrange the lever 3 on the first side plate 10. Alternatively, the mounting section 32 and the lever shaft 3s may be designed as a one-piece structure, and the lever shaft 3s may be rotatably provided on the first side plate 10.

Further, as shown in fig. 5-10, the lever 3 further includes a reset segment 33, the reset segment 33 and the transition segment 31 are respectively connected to two ends of the mounting segment 32, and the reset segment 33 is bent towards the side of the first side board 10 relative to the mounting segment 32; the first side plate 10 is provided with a limiting hole 100, the reset segment 33 is inserted into the limiting hole 100 and swings in the limiting hole 100, the reset segment 33 and the side wall of the limiting hole 100 are in limiting fit to limit the lever 3 at the initial position, that is, the reset piece 4 applies a force to the reset segment 33, so that the reset segment 33 abuts against the side wall of the limiting hole 100, and the lever 3 is limited at the initial position.

As another embodiment, the lever 3 may be provided with a limiting shaft on the first side plate 10 instead of the reset segment 33, and the reset element 4 applies a force to the mounting segment 32 to press the mounting segment against the limiting shaft, so as to limit the lever 3 at the initial position.

As shown in fig. 5-9, 11, is an embodiment of the third gear wheel 8.

The third gear 8 further comprises a plurality of third gear teeth 85 and a sliding groove 81, the third gear teeth 85, the first fool-proof structure 84, the gear transition side edge 83 and the gear driving side edge 82 are sequentially arranged on the outer circumference edge of the third gear 8, the sliding groove 81 is arranged in the middle of the third gear 8 and is located between the rotation center of the third gear 8 and the outer circumference edge. Further, the third gear 8 is further provided with a gear shaft hole 80, and the axis of the gear shaft hole 80 coincides with the rotation center of the third gear 8.

It should be noted that, in the description of the present utility model, the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate an orientation or a positional relationship based on that shown in the drawings or an orientation or a positional relationship conventionally put in use, and are merely for convenience of description, and do not indicate that the apparatus or element to be referred to must have a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating relative importance.

The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the utility model, and these should be considered to be within the scope of the utility model.

Claims (10)

1. The utility model provides a breaking interlocking structure of circuit breaker, its includes drawer seat (1) and lever (3), and drawer seat (1) include bottom plate subassembly (7), third gear (8) and first curb plate (10), and bottom plate subassembly (7) include spindle structure (70), third gear (8) pivot set up on first curb plate (10), spindle structure (70) with third gear (8) meshing cooperation is in order to drive its rotation, lever (3) middle part pivot set up on first curb plate (10), are used for triggering breaking half shaft (20) of circuit breaker body (2) in circuit breaker body (2) switch between test position and hookup location; the method is characterized in that: one end of the lever (3) is in direct transmission fit with the third gear (8), and the other end of the lever is used for being in direct transmission fit with the brake-separating half shaft (20) of the breaker body (2) so as to trigger the brake-separating half shaft (20).

2. The breaking interlocking structure of a circuit breaker according to claim 1, wherein: the lever (3) is also used for keeping the brake-separating half shaft (20) at a brake-separating position during the switching process of the breaker body (2) between a test position and a connection position;

the lever (3) comprises a lever driven side edge (36), the third gear (8) comprises a gear driving side edge (82), and the gear driving side edge (82) presses the lever driven side edge (36) to enable the lever (3) to rotate so as to trigger the brake separating half shaft (20).

3. The breaking interlocking structure of the circuit breaker according to claim 2, wherein: the lever (3) further comprises a lever transition side edge (37), one end of the lever transition side edge (37) is connected with one end of the lever driven side edge (36) in a bending manner, the third gear (8) further comprises a gear transition side edge (83), and one end of the gear transition side edge (83) is connected with one end of the gear driving side edge (82) in a bending manner; the gear transition side edge (83) is used for being matched with the lever transition side edge (37) oppositely when the breaker body (2) is in a connecting position so as to allow the lever (3) to reset; when the third gear (8) rotates from the final position to the middle position, the gear driving side edge (82) is contacted with the lever transition side edge (37) after the gear transition side edge (83), and the lever driven side edge (36) is contacted with the gear driving side edge (82) after the lever transition side edge (37).

4. The breaking interlocking structure of a circuit breaker according to claim 1, wherein: the brake-separating interlocking structure further comprises a reset piece (4) and a lever shaft (3 s), the lever (3) is pivoted on the first side plate (10) through the lever shaft (3 s), the reset piece (4) is a torsion spring sleeved on the lever shaft (3 s), one end of the torsion spring is matched with the lever (3), and the other end of the torsion spring is matched with the first side plate (10).

5. The breaking interlocking structure of a circuit breaker according to claim 1, wherein: the lever (3) further comprises a lever driving side edge (35) for pressing a brake-separating half shaft arm (200) of the brake-separating half shaft (20) to rotate the brake-separating half shaft (20).

6. The breaking interlocking structure of a circuit breaker according to claim 3, wherein: the lever (3) comprises a driving section (30), a transition section (31) and a mounting section (32) which are sequentially connected, the driving section (30) is provided with a lever driving side edge (35), the mounting section (32) is provided with a lever driven side edge (36) and a lever transition side edge (37), the lever driven side edge (36) is close to the transition section (31) relative to the lever transition side edge (37), the lever (3) is pivoted on the first side plate (10) through the mounting section (32), the driving section (30) and the mounting section (32) are arranged side by side, and the driving section (30) is offset towards the direction away from the first side plate (10) relative to the mounting section (32).

7. The breaking interlock structure of the circuit breaker according to claim 6, wherein: one end of the mounting section (32) connected with the transition section (31) is provided with a lever hole (34); the lever (3) further comprises a reset section (33), the reset section (33) and the transition section (31) are respectively connected with two ends of the mounting section (32), and the reset section (33) bends towards the side where the first side plate (10) is located relative to the mounting section (32); the first side plate (10) is provided with a limiting hole (100), the reset segment (33) is inserted into the limiting hole (100) and swings in the limiting hole (100), and the reset segment (33) is in limiting fit with the side wall of the limiting hole (100) to limit the lever (3) at an initial position.

8. The breaking interlocking structure of a circuit breaker according to claim 3, wherein: the third gear (8) is further provided with a first fool-proof structure (84), the main shaft structure (70) comprises a second gear (702), the second gear (702) is provided with a second fool-proof structure (7020), and the second fool-proof structure (7020) is matched with the first fool-proof structure (84).

9. The breaking interlock structure of the circuit breaker according to claim 8, wherein: the second gear (702) further comprises a plurality of second gear teeth arranged on the circumferential outer edge of the second gear (702), and the second fool-proof structure (7020) is a semicircular tooth arranged on the circumferential outer edge of the second gear (702); the third gear (8) further comprises a sliding groove (81) and a plurality of third gear teeth (85) arranged on the outer periphery of the circumference of the sliding groove, the third gear teeth (85) are meshed with the second gear teeth, the first fool-proof structure (84) is a semicircular groove arranged on the outer periphery of the circumference of the third gear (8), the third gear teeth (85), the first fool-proof structure (84), the gear transition side edge (83) and the gear driving side edge (82) are sequentially arranged on the outer periphery of the circumference of the third gear (8), and the sliding groove (81) is arranged in the middle of the third gear (8) and located between the rotation center and the outer periphery of the third gear (8).

10. The breaking interlocking structure of a circuit breaker according to claim 1, wherein: the brake-separating interlocking structure further comprises a limiting rod (5) fixedly arranged on the first side plate (10), the limiting rod (5) comprises a limiting rod pressing surface (50) and a limiting rod avoiding groove (51), the limiting rod pressing surface (50) is used for triggering the brake-separating half shaft (20) to act in the switching process of the separating position and the testing position of the breaker body (2), and the limiting rod avoiding groove (51) is used for avoiding the brake-separating half shaft (20) when the breaker body (2) is in the testing position, so that the breaker body (2) is allowed to be switched on.