Circuit breaker operating mechanism

Abstract

The utility model provides a circuit breaker operating mechanism. The circuit breaker operating mechanism comprises an energy storage module, a switching-on module and a switching-off module. Wherein the fixed part in the closing module is in driving connection with the main shaft of the circuit breaker, and the crank arm is rotatably arranged on the fixed part. The fixing part rotates to drive a tripping plate in the opening module to rotate reversely, the first end of the tripping plate abuts against the abutting part, and the second end of the tripping plate abuts against the opening retainer, so that the circuit breaker is kept in a closed state. The opening holding shaft rotates, so that the second end is separated from the opening holding shaft, the first end is separated from the abutting part, the abutting part moves from the first end to the second end along the side face of the tripping plate until the abutting part abuts against the side face of the tripping plate, the tripping plate rotates in the forward direction, and the tripping plate is located at the opening position. The circuit breaker operating mechanism is compact, simple, stable and reliable in structure, the closing module can limit the tripping plate when the circuit breaker is switched to be opened and closed, and excessive rotation of the tripping plate is prevented.

Description

Technical Field

[0001] The utility model relates to the field of electrical equipment, and particularly relates to a circuit breaker operating mechanism. Background Art

[0002] A circuit breaker operating mechanism is a device for controlling the closing and opening of a circuit breaker. A spring-type operating mechanism is one of the circuit breaker operating mechanisms, which stores energy by compressing or stretching a spring and releases the energy when needed to drive the closing or opening action of the circuit breaker.

[0003] Currently, the spring-type operating mechanism usually includes a tripping structure. The tripping structure is a device in the circuit breaker operating mechanism to achieve closing hold operation and opening operation, so as to enable the circuit breaker to switch between the closing state and the opening state. However, the structure of the existing trip plate is unstable. When the circuit breaker switches between closing and opening, the tripping structure is prone to overshoot and cannot reset, resulting in the failure of the circuit breaker operating mechanism and inability to be used normally. Summary of the Utility Model

[0004] An object of the utility model is to solve the deficiencies in the prior art, and to provide a circuit breaker operating mechanism with a simple, compact, stable and reliable structure.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A circuit breaker operating mechanism for controlling the closing and opening of a circuit breaker, the circuit breaker having an opening state and a closing state, comprising:

[0007] An energy storage module for storing the energy for closing the circuit breaker;

[0008] A closing module for being in transmission connection with the main shaft of the circuit breaker, the energy storage module being in transmission connection with the closing module, the closing module including a fixed part and a crank arm, the fixed part being in driving connection with the main shaft, the crank arm being rotatably arranged on the fixed part; the crank arm is provided with an abutting part, and the energy storage module releases energy to drive the fixed part to rotate, so that the circuit breaker switches from the opening state to the closing state;

[0009] An opening module, including a trip plate and an opening holding shaft, the trip plate having an opening position and the closing position, the trip plate including a first end and a second end, when the trip plate is in the opening position, the second end of the trip plate is located on one side of the opening holding shaft;

[0010] The rotation of the fixed part drives the trip plate to rotate in the opposite direction, so that the first end abuts against the abutting part, and the second end abuts against the opening holding shaft, so that the circuit breaker is held in the closing state, and the trip plate is in the closing position;

[0011] The opening holding shaft rotates, causing the opening holding shaft to separate from the second end, the first end to separate from the abutting portion, and the abutting portion to move along the side surface of the release plate from the first end toward the second end until the abutting portion abuts against the side surface of the release plate, so that the release plate rotates forward to place the release plate in the opening position.

[0012] In an exemplary embodiment, the closing module includes an elastic member. One end of the elastic member is fixed to the fixed portion, and the other end of the elastic member is connected to the end of the toggle arm away from the abutting portion. During the process of the release plate changing from the closing position to the opening position, the release plate presses the toggle arm, causing the elastic member to elastically extend.

[0013] In an exemplary embodiment, the toggle arm includes a connecting column. The elastic member is connected to the connecting column. A limiting hole is formed in the fixed portion, and a through hole is formed in the end of the toggle arm away from the abutting portion. The connecting column passes through the limiting hole and the through hole. The aperture of the limiting hole is larger than the aperture of the through hole and the diameter of the connecting column.

[0014] In an exemplary embodiment, the toggle arm includes a roller. The roller is provided at the end of the toggle arm away from the fixed portion to form the abutting portion. When the circuit breaker is in the closing state, the roller abuts against the first end of the release plate.

[0015] In an exemplary embodiment, the release plate includes a first clamping arm and a second clamping arm. The first clamping arm and the second clamping arm are arranged at an angle. The free end of the first clamping arm is the first end, and the free end of the second clamping arm is the second end.

[0016] An arc-shaped side is formed between the first clamping arm and the second clamping arm. The abutting portion can rotate toward the arc-shaped side and abut against the arc-shaped side.

[0017] In an exemplary embodiment, a relief portion is recessed in the middle of the opening holding shaft. When the release plate is in the closing position, the second end of the release plate abuts against the outer peripheral wall of the opening holding shaft near the relief portion.

[0018] The opening module further includes an opening operation shaft. The opening operation shaft is in transmission connection with the opening holding shaft. Rotating the opening operation shaft can cause the second end of the release plate to pass through the relief portion on the opening holding shaft.

[0019] In an exemplary embodiment, the energy storage module includes a spring, a connecting arm, a rotating shaft, a first gear and a second gear, the connecting arm is fixedly connected to the rotating shaft and rotates with the rotating shaft, the first gear is sleeved on the rotating shaft and fixed relative to the rotating shaft, and the second gear is meshed with the first gear; one end of the spring is fixedly connected to the connecting arm, and the rotation of the second gear can transmit the first gear to rotate the rotating shaft, so that the spring follows the connecting arm to perform telescopic movement.

[0020] In an exemplary embodiment, the energy storage module includes a manual part and / or an electric part, and the manual part and / or the electric part can drive the second gear to rotate.

[0021] In an exemplary embodiment, the circuit breaker operating mechanism further includes a first mounting plate and a second mounting plate, the first mounting plate and the second mounting plate are spaced apart, and the other end of the spring is fixed to the second mounting plate;

[0022] The first mounting plate is provided with an extension portion extending from the first gear toward the second gear. If the energy storage module includes an electric portion, the electric portion is arranged on the extension portion.

[0023] In an exemplary embodiment, the closing module includes a cam, a limiting portion and a retaining block, the cam is sleeved on the rotating shaft, the cam is spaced apart from the first gear, and the limiting portion is fixed on the cam; the limiting portion can be abutted against the retaining block as the cam rotates, so as to fix the rotating shaft.

[0024] In an exemplary embodiment, the cam includes an arcuate surface, and the distance between one end of the arcuate surface and the axis of the rotating shaft increases gradually from the other end, so as to push the fixed part to rotate, so that the circuit breaker switches from the open state to the closed state;

[0025] The limiting portion is arranged on the end of the cam which has a longer axial distance with respect to the rotating shaft.

[0026] In an exemplary embodiment, the closing module further comprises a closing holding shaft and a closing operation shaft, the closing holding shaft and the closing operation shaft are drivingly connected, a groove is concavely provided on the closing holding shaft, and when the limiting portion abuts against the holding block, the holding block also abuts against the outer peripheral wall of the closing holding shaft close to the groove;

[0027] The closing operation shaft rotates, so that the retaining block rotates and passes through the groove.

[0028] It can be seen from the above technical solution that the utility model has at least the following advantages and positive effects:

[0029] The circuit breaker operating mechanism in the present utility model includes an energy storage module, a closing module, and a tripping module. Among them, the closing module includes a fixed part and a toggle arm. The fixed part is drivingly connected to the main shaft of the circuit breaker, and the toggle arm is rotatably arranged on the fixed part. The tripping module includes a release plate and a tripping holding shaft. The fixed part rotates to drive the release plate to rotate in the reverse direction. The first end of the release plate abuts against the abutting part, and the second end of the release plate abuts against the tripping retainer, so that the circuit breaker is held in the closed state.

[0030] When the tripping holding shaft rotates, the second end can be separated from the tripping holding shaft, and the first end can be separated from the abutting part. The abutting part moves along the side surface of the release plate from the first end towards the second end until the abutting part abuts against the side surface of the release plate, so as to limit the release plate, effectively avoiding the phenomenon of excessive rotation of the release plate. And it makes the release plate rotate forward, so that the release plate is in the tripping position, thus facilitating the subsequent closing operation of the circuit breaker operating mechanism on the circuit breaker. In this way, the cycle repeats without affecting the normal use of the circuit breaker operating mechanism, making the opening and closing operations of the circuit breaker more reliable.

[0031] It can be understood that the circuit breaker operating mechanism of the present application has a compact structure, and the closing module and the tripping module cooperate to hold the circuit breaker in the closed state. During the process of the circuit breaker switching from the closed state to the tripping state, the closing module can limit the release plate to ensure that the release plate stably and reliably returns to the tripping position. Description of the Drawings

[0032] Figure 1 is a perspective view of the circuit breaker operating mechanism according to an embodiment of the present utility model.

[0033] Figure 2 is Figure 1 the front view of the circuit breaker operating mechanism shown.

[0034] Figure 3 is Figure 1 the front view of the circuit breaker operating mechanism shown with the first mounting plate omitted, the energy storage module not energized, and the circuit breaker in the tripping state.

[0035] Figure 4 is Figure 1 the front view of the circuit breaker operating mechanism shown with the first mounting plate omitted, the energy storage module energized, and the circuit breaker in the tripping state.

[0036] Figure 5 is Figure 1 the front view of the circuit breaker operating mechanism shown with the first mounting plate omitted, the energy storage module not energized, and the circuit breaker in the closed state.

[0037] Figure 6 is Figure 1The front view of the circuit breaker operating mechanism shown, with the first mounting plate omitted and the energy storage module energized, and the circuit breaker in the closed state.

[0038] Figure 7 is Figure 1 The perspective view of the cam in the circuit breaker operating mechanism shown.

[0039] Figure 8 is Figure 7 The front view of the cam shown.

[0040] Figure 9 is Figure 1 The perspective view of the opening module and the closing module when the circuit breaker is in the closed state in the circuit breaker operating mechanism shown.

[0041] Figure 10 is Figure 9 The front view of the opening module and the closing module shown.

[0042] Figure 11 is Figure 1 The perspective view of the opening module and the closing module when the circuit breaker changes from the closed state to the open state in the circuit breaker operating mechanism shown.

[0043] Figure 12 is Figure 11 The front view of the opening module and the closing module shown.

[0044] Explanation of the reference numerals is as follows:

[0045] 10. First mounting plate; 11. Connecting hole; 12. Extension part;

[0046] 20. Second mounting plate; 21. Connecting piece;

[0047] 30. Indicator plate;

[0048] 40. Energy storage module; 41. Spring; 42. Connecting arm; 43. Rotating shaft; 44. Connecting block; 45. First gear; 46. Second gear; 47. Manual part; 471. Operation area; 48. Electric part; 481. Motor; 482. Third gear;

[0049] 50. Closing module; 51. Cam; 511. Arc surface; 52. Limiting part; 53. Holding block; 531. Body; 532. Triangular area; 54. First connecting shaft; 55. Closing holding shaft; 56. Closing operation shaft; 57. Fixed part; 571. First fixed part; 572. Second fixed part; 573. Fixing piece; 574. Limiting hole; 58. Rocker arm; 581. Contact part; 582. Roller; 583. First rocker arm; 584. Second rocker arm; 585. Connecting column;

[0050] 60. Tripping module; 61. Release plate; 611. First end; 612. Second end; 613. First clamping arm; 614. Second clamping arm; 615. Arc side; 62. Second connecting shaft; 63. Tripping holding shaft; 631. Avoidance part; 64. Return spring; 65. Tripping operating shaft;

[0051] 70. Auxiliary switch;

[0052] 80. Main shaft. Detailed implementation manner

[0053] Typical implementation manners reflecting the features and advantages of the present utility model will be described in detail in the following description. It should be understood that the present utility model can have various changes in different implementation manners, all of which do not depart from the scope of the present utility model, and the descriptions and illustrations therein are essentially for illustrative purposes and not for limiting the present utility model.

[0054] In the description of the present application, it should be understood that in the embodiments shown in the drawings, the indication of the direction or position relationship (such as up, down, left, right, front, and back, etc.) is only for facilitating the description of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. When these elements are in the positions shown in the drawings, these descriptions are appropriate. If the description of the positions of these elements changes, then the indication of these directions also changes accordingly.

[0055] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined.

[0056] The present embodiment provides a circuit breaker operating mechanism, which is compact and simple in structure and can stably and reliably control the closing and tripping of the circuit breaker. The specific solution is described through the following embodiments.

[0057] Please refer to Figure 1 , the circuit breaker operating mechanism of this embodiment includes a first mounting plate 10 and a second mounting plate 20.

[0058] In some embodiments of the present application, a plurality of connection holes 11 are provided on the first mounting plate 10, and the first mounting plate 10 can be fixedly installed near the circuit breaker using fasteners. The fasteners can be studs, rivets, etc.

[0059] The first mounting plate 10 is spaced apart from the second mounting plate 20. Specifically, the first mounting plate 10 and the second mounting plate 20 are spaced apart along their respective peripheries and a plurality of through holes (not shown in the figure) are provided, and the connecting member 21 passes through the through holes on the first mounting plate 10 and the through holes on the second mounting plate 20 correspondingly, so that the second mounting plate 20 is fixed relative to the first mounting plate 10. The connecting member 21 may be a screw, a bolt, etc.

[0060] For the convenience of description, a side of the second mounting plate 20 close to the first mounting plate 10 is defined as a rear side, and a side of the second mounting plate 20 facing away from the first mounting plate 10 is defined as a front side.

[0061] The first mounting plate 10 and the second mounting plate 20 are also provided with through holes (not marked in the figure), and the main shaft 80 of the circuit breaker is passed through the through holes on the second mounting plate 20 and the through holes on the first mounting plate 10 so that the end of the main shaft 80 exceeds the surface of the front side of the second mounting plate 20.

[0062] The main shaft 80 rotates to open and close the circuit breaker. In this embodiment, the main shaft 80 rotates forward to close the circuit breaker, so that the circuit breaker is in the closed state; the main shaft 80 rotates reversely to open the circuit breaker, so that the circuit breaker is in the closed state.

[0063] It should be noted that, in other embodiments, the main shaft 80 may rotate in the reverse direction to open the circuit breaker, and the main shaft 80 may rotate in the forward direction to close the circuit breaker. The specific configuration may be based on actual needs and is not limited here.

[0064] In some embodiments, an indicator sign 30 may be provided on the end of the main shaft 80 near the front side of the second mounting plate 20. The indicator sign 30 can rotate with the main shaft 80. The indicator sign 30 is used to display the opening and closing status of the circuit breaker. The operator can judge the status of the circuit breaker by observing the indicator sign 30, which effectively improves the work efficiency and safety and ensures the personal safety of the operator.

[0065] Specifically, the sign 30 has the words "open" and "close". Figure 2 , the word "closed" on the indicator 30 is in a horizontal position, and the word "opened" is in a skewed position, so as to remind the operator that the circuit breaker is in the closed state at this time; see Figure 3 When the word "open" on the indicator board 30 is in a horizontal position, the word "closed" is in a skewed position, thereby reminding the operator that the circuit breaker is in the open state at this time.

[0066] See also Figure 3 Combined with Figure 1 The circuit breaker operating mechanism includes an energy storage module 40. The energy storage module 40 is arranged below the main shaft 80. The energy storage module 40 is used to store energy for closing the circuit breaker.

[0067] In some embodiments of the present application, the energy storage module 40 includes a spring 41, a connecting arm 42, and a rotating shaft 43. The rotating shaft 43 drives the spring 41 to perform telescopic movement through the connecting arm 42.

[0068] Specifically, the rotating shaft 43 is rotatably mounted on the first mounting plate 10 and the second mounting plate 20. One end of the rotating shaft 43 is connected to the first mounting plate 10, and the other end of the rotating shaft 43 passes through the second mounting plate 20 from the rear side of the second mounting plate 20 and protrudes from the front side of the second mounting plate 20.

[0069] The spring 41 is disposed on the front side of the second mounting plate 20 so that the user can determine whether the energy storage module 40 stores energy by checking the state of the spring 41. For example, when the length of the spring 41 is longer, the energy storage module 40 stores energy; when the length of the spring 41 is shorter, the energy in the energy storage module 40 is released. Or when the length of the spring 41 is shorter, the energy storage module 40 stores energy; when the length of the spring 41 is longer, the energy in the energy storage module 40 is released. It can be specifically set according to actual needs and is not limited here. In this embodiment, it is described that when the length of the spring 41 is longer, the energy storage module 40 stores energy; when the length of the spring 41 is shorter, the energy in the energy storage module 40 is released.

[0070] One end of the spring 41 is fixed to the second mounting plate 20 through a connecting block 44, and the other end of the spring 41 is fixedly connected to the connecting arm 42 through another connecting block 44. The connecting arm 42 is fixedly connected to the rotating shaft 43 and is located on the front side of the second mounting plate 20. When the rotating shaft 43 rotates, it can drive the connecting arm 42 to rotate, so that the spring 41 fixedly connected to the connecting arm 42 stretches or contracts following the rotation of the connecting arm 42.

[0071] The energy storage module 40 includes a first gear 45 and a second gear 46. Among them, the first gear 45 and the second gear 46 are located between the first mounting plate 10 and the second mounting plate 20 to facilitate the protection of the first gear 45 and the second gear 46. The first gear 45 is sleeved on the rotating shaft 43 and is fixed relative to the rotating shaft 43. The second gear 46 is disposed on one side of the first gear 45 and meshes with the first gear 45, so that the rotation of the second gear 46 can drive the first gear 45 to rotate, and the rotating shaft 43 rotates following the first gear 45, so that the spring 41 makes telescopic movement following the rotating shaft 43.

[0072] This embodiment is described by taking the second gear 46 being disposed on the right side of the first gear 45 as an example. When the second gear 46 rotates forward, the first gear 45 can be driven to rotate in the reverse direction, and the rotating shaft 43 also rotates in the reverse direction following the rotation of the first gear 45, and the spring 41 can be stretched from the length in Figure 3 to the maximum length in Figure 4 .

[0073] The energy storage module 40 further includes a manual part 47. The manual part 47 can drive the second gear 46 to rotate. An operator can store energy in the spring 41 by operating the manual part 47. Specifically, the manual part 47 is rotatably mounted on the second mounting plate 20. The second gear 46 is sleeved on the manual part 47 and is fixed relative to the manual part 47, so that the second gear 46 can rotate following the manual part 47. An operation area 471 is provided at one end of the manual part 47 close to the second mounting plate 20. The operator can use an external tool to dock with the operation area 471 to control the rotation of the manual part 47 and realize the rotation of the second gear 46. The external tool can be an operation handle, an operation rod, etc.

[0074] See Figure 5 and in combination with Figure 1 , in some embodiments of the present application, the energy storage module 40 further includes an electric part 48. The operator can stretch the spring 41 by controlling the electric part 48. Specifically, the electric part 48 is fixedly mounted on the first mounting plate 10.

[0075] Furthermore, an extension part 12 is provided on the first mounting plate 10 extending in the direction from the first gear 45 towards the second gear 46. The electric part 48 is arranged on the extension part 12. For the convenience of description, the left - right direction in the figure is defined as the width direction. The setting of the extension part 48 makes the width of the first mounting plate 10 greater than the width of the second mounting plate 20. When the electric part 48 needs to be repaired, the operator does not need to disassemble the entire circuit breaker operating mechanism or the second mounting plate 20. Only by disassembling the electric part 48 can the relevant parts in the electric part 48 be replaced.

[0076] The electric part 48 can drive the second gear 46 to rotate. The second gear 46 drives the first gear 45, thereby realizing the stretching of the spring 41 and increasing the length of the spring 41. Further, the electric part 48 includes a motor 481 and a third gear 482. The motor 481 is in transmission connection with the third gear 482, so that the third gear 482 rotates under the action of the motor 481. The third gear 482 meshes with the second gear 46, so that the rotational torque can be transmitted to the second gear 46 to drive the first gear 45 to rotate.

[0077] The closing module 50 further includes a micro - switch, and the micro - switch is electrically connected to the electric part 48. When the electric part 48 drives the second gear 46 to rotate and the spring 41 is stretched to the maximum length, the micro - switch receives a signal and causes the electric part 48 to cut off the power, effectively avoiding the operator accidentally touching the electric part 48 and causing the energy in the energy storage module 40 to be released.

[0078] The circuit breaker operating mechanism includes a closing module 50. The closing module 50 is used for driving connection with the main shaft 80 of the circuit breaker. The closing module 50 is also drivingly connected to the energy storage module 40 so that the energy storage module 40 releases energy, enabling the circuit breaker to switch from the open state to the closed state.

[0079] In some embodiments, refer to Figure 4 and Figure 6 , the closing module 50 includes a cam 51, a limiting portion 52 and a holding block 53. The cam 51, the limiting portion 52 and the holding block 53 cooperate to hold the energy storage module 40 in the energy storage state, which is equivalent to holding the spring 41 in the stretched state.

[0080] It should be noted that Figure 4 and Figure 6 omit some structures of the first gear 45 to show the relative positional relationship among the cam 51, the limiting portion 52 and the holding block 53 when the energy storage module 40 is held in the energy storage state.

[0081] Specifically, the cam 51 is located between the first mounting plate 10 and the second mounting plate 20. The cam 51 is sleeved on the rotating shaft 43 and is fixed relative to the rotating shaft 43, so that the cam 51 can rotate following the rotating shaft 43. The cam 51 and the first gear 45 are arranged at intervals to avoid interference between the cam 51 and the first gear 45.

[0082] See Figure 7 and Figure 8 , the cam 51 includes an arc surface 511. The distance from one end to the other end of the arc surface 511 increases with respect to the axis of the rotating shaft 43. The limiting portion 52 is fixedly arranged at the end of the cam 51 where the distance from the axis of the rotating shaft 43 is longer, so that the limiting portion 52 can rotate following the rotation of the cam 51.

[0083] The holding block 53 is arranged close to the cam 51, and the holding block 53 can rotate relative to the second mounting plate 20. Specifically, the closing module further includes a first connecting shaft 54. One end of the first connecting shaft 54 is connected to the first mounting plate 10, and the other end of the first connecting shaft 54 is connected to the second mounting plate 20. The holding block 53 is rotatably mounted on the first connecting shaft 54.

[0084] Refer to Figure 4 , in some embodiments of the present application, the holding block 53 includes a body 531 and a triangular area 532. The outer contour of the body 531 is approximately rectangular, and the outer contour of the triangular area 532 is approximately triangular. The body 531 and the triangular area 532 are integrally formed. The triangular area 532 is arranged on the side of the body 531 close to the rotating shaft 43. The triangular area 532 includes two inclined surfaces, and the two inclined surfaces intersect to form a tip. The inclined surface far from the first connecting shaft 54 can be tangent to the limiting portion 52.

[0085] When the spring 41 in the energy storage module 40 is stretched to its maximum length as the rotating shaft 43 rotates, the limiting portion 52 on the cam 51 also moves as the cam 51 rotates and abuts against the inclined surface of the holding block 53 away from the first connecting shaft 54 to limit the further rotation of the cam 51, thereby fixing the rotating shaft 43 and keeping the spring 41 in a stretched state.

[0086] The closing module includes a closing holding shaft 55. The closing holding shaft 55 is arranged below the first holding shaft. When the holding block 53 abuts against the limiting portion 52, the side of the main body 531 of the holding block 53 away from the triangular area 532 abuts against the closing holding shaft 55 to ensure that the holding block 53 can stably abut against the limiting portion 52, ensuring the stability of the energy storage module 40 in the energy storage state.

[0087] When the closing holding shaft 55 rotates, the limit on the holding block 53 can be released, causing the holding block 53 to rotate to release the energy stored in the energy storage module 40. Specifically, a groove (not shown in the figure) is recessed on the closing holding shaft 55. When the limiting portion 52 abuts against the holding block 53, the holding block 53 abuts against the outer peripheral wall of the closing holding shaft 55 near the groove. Rotate the closing holding shaft 55 so that the notch of the groove rotates towards the holding block 53, causing the holding block 53 to rotate under the action of gravity, and the end of the holding block 53 close to the closing holding shaft 55 can pass through the groove. At the same time, the rotation of the holding block 53 causes the limiting portion 52 on the cam 51 to lose its bottom support, releasing the limit of the holding block 53 on the limiting portion 52 of the cam 51. Under the elastic potential energy of the spring 41, the spring 41 contracts, and the energy in the energy storage module 40 is released.

[0088] The closing module includes a closing operation shaft 56. The closing operation shaft 56 is in transmission connection with the closing holding shaft 55. An operator can control the rotation of the closing holding shaft 55 by operating the closing operation shaft 56 to manually release the energy stored in the energy storage module 40 and achieve the closing of the circuit breaker. It should be noted that in some embodiments of the present application, an electric driving method can also be set in the circuit breaker operating mechanism to drive the rotation of the closing holding shaft 55 to release the energy stored in the energy storage module 40. Specifically, it can be set according to actual needs and will not be limited here.

[0089] The release of the energy in the energy storage module 40 can drive the circuit breaker to switch from the open state to the closed state.

[0090] Specifically, please refer to Figures 9 to 11 and in combination with Figure 6, the closing module 50 includes a fixing part 57. The fixing part 57 is disposed between the first mounting plate 10 and the second mounting plate 20. The fixing part 57 is drivingly connected to the main shaft 80 of the circuit breaker. In some embodiments, the fixing part 57 is sleeved on the main shaft 80 and is fixed relative to the main shaft 80. When the fixing part 57 rotates forward, the main shaft 80 can be rotated forward, causing the circuit breaker to switch from the open state to the closed state.

[0091] Further, the fixing part 57 includes a first fixing part 571 and a second fixing part 572. The first fixing part 571 and the second fixing part 572 are spaced apart along the extending direction of the main shaft 80. The first fixing part 571 and the second fixing part 572 are symmetrically arranged and are connected by a fixing member 573. The fixing member 573 can be a bolt, a stud, etc.

[0092] A first roller 582 is disposed between the first fixing part 571 and the second fixing part 572. The first roller 582 is disposed at one end of the fixing part 57 close to the energy storage module 40. During the process of energy release in the energy storage module 40, the spring 41 elastically contracts, the rotating shaft 43 rotates reversely, the cam 51 also rotates reversely with the rotation of the rotating shaft 43, and the arc surface 511 of the cam 51 impacts the first roller 582 on the side away from the rotating shaft 43, driving the fixing part 57 to rotate forward, causing the main shaft 80 to follow the fixing part 57 and rotate forward, and the circuit breaker switches from the open state to the closed state.

[0093] The closing module 50 further includes a toggle arm 58. The toggle arm 58 is rotatably disposed on the fixing part 57. The toggle arm 58 is disposed at one end of the fixing part 57 away from the first roller 582. Further, the toggle arm 58 is disposed between the first fixing part 571 and the second fixing part 572. The outer contour of the toggle arm 58 is generally triangular, which is beneficial to improving the structural strength of the toggle arm 58. The middle part of the toggle arm 58 is rotatably disposed on the fixing part 57, and an abutting part 581 is provided at one end of the toggle arm 58 away from the fixing part 57.

[0094] The circuit breaker operating mechanism further includes a tripping module 60. The tripping module 60 is disposed on one side of the main shaft 80 of the circuit breaker. In this embodiment, the tripping module 60 is disposed on the left side of the main shaft 80 as an example for illustration. The tripping module 60 can keep the circuit breaker in the closed state.

[0095] Specifically, the tripping module 60 includes a release plate 61 and a second connecting shaft 62. One end of the second connecting shaft 62 is connected to the first mounting plate 10, and the other end of the second connecting shaft 62 is fixedly connected to the second mounting plate 20. The fixing part 57 is disposed on the second connecting shaft 62. The release plate 61 is rotatably disposed between the first mounting plate 10 and the second mounting plate 20 through the second connecting shaft 62. Among them, the release plate 61 has a tripping position and a closing position.

[0096] See Figure 9 andFigure 10 When the release plate 61 is in the closing position, the contact portion 581 of the release plate 61 abuts against the crank arm 58 to limit the rotation of the fixing portion 57, thereby keeping the circuit breaker in the closed state.

[0097] Further, the opening module 60 further includes an opening holding shaft 63. The opening holding shaft 63 is disposed below the release plate 61. The opening holding shaft 63 has a limiting effect on the release plate 61, enabling the release plate 61 to be held in the closing position. Specifically, the release plate 61 includes a first end 611 and a second end 612. When the release plate 61 is in the opening position, the second end 612 of the release plate 61 is located on the side of the opening holding shaft 63 away from the main shaft 80. When the release plate 61 is in the closing position, the first end 611 of the release plate 61 abuts against the contact portion 581 on the crank arm 58, and the second end 612 abuts against the opening holding shaft 63 to hold the release plate 61 in the closing position.

[0098] Rotate the opening holding shaft 63 to separate the first end 611 of the release plate 61 from the contact portion 581 on the crank arm 58, and separate the first end 611 from the opening holding shaft 63. The contact portion 581 moves along the side surface of the release plate 61 from one end of the release plate 61 towards the second end 612 until the contact portion 581 abuts against the side surface of the release plate 61, so as to rotate the release plate 61 forward, causing the release plate 61 to switch from the closing position to the opening position.

[0099] Specifically, referring to Figures 9 to 12 The middle of the opening holding shaft 63 is recessed with an avoidance portion 631. When the release plate 61 is in the closing position, the second end 612 of the release plate 61 abuts against the outer peripheral wall of the opening holding shaft 63 near the avoidance portion 631. Rotating the opening holding shaft 63 can cause the avoidance portion 631 to rotate towards the second end 612 of the release plate 61, causing the release plate 61 to rotate reversely under the action of gravity, and the second end 612 of the release plate 61 passes through the avoidance portion 631. The first end 611 of the release plate 61 follows the rotation of the release plate 61 and separates from the contact portion 581 of the crank arm 58. The fixing portion 57 rotates reversely under the action of gravity due to the loss of force on the crank arm 58, causing the circuit breaker to switch from the closed state to the open state.

[0100] Further, the release plate 61 includes a first clamping arm 613 and a second clamping arm 614, and the first clamping arm 613 and the second clamping arm 614 are arranged at an angle. The free end of the first clamping arm 613 is the first end 611, and the free end of the second clamping arm 614 is the second end 612. An arc-shaped side 615 is formed between the first clamping arm 613 and the second clamping arm 614. One end of the crank arm 58 away from the fixing part 57 is located between the first end 611 and the second end 612, and the abutting part 581 of the crank arm 58 can abut against the arc-shaped side 615 to limit the release plate 61 and prevent the release plate 61 from continuing to rotate in the reverse direction, effectively avoiding the phenomenon of excessive rotation of the release plate 61.

[0101] In some embodiments of the present application, the closing module 50 further includes an elastic member (not shown in the figure). One end of the elastic member is fixedly connected to the fixing part 57, and the other end of the elastic member is connected to the end of the crank arm 58 away from the abutting part 581. The elastic member is arranged between the first fixing part 571 and the second fixing part 572. When the opening holding shaft 63 rotates, the release plate 61 rotates in the reverse direction and presses the crank arm 58, and the elastic member elongates to form elastic potential energy. The elastic potential energy is transmitted to the crank arm 58 and acts on the release plate 61, causing the release plate 61 to rotate in the forward direction and return to the opening position.

[0102] In some embodiments, the crank arm 58 further includes a connecting column 585, and the elastic member is connected to the connecting column 585. Specifically, a through hole is formed at the end of the crank arm 58 away from the abutting part 581. Limit holes 574 are formed at the ends of the first fixing part 571 and the second fixing part 572 away from the first roller 582. The diameter of the limit hole 574 is larger than the diameter of the through hole and the diameter of the connecting column 585. For the convenience of description, the limit hole 574 on the first fixing part 571 is defined as the first limit hole 574, and the limit hole 574 on the second fixing part 572 is defined as the second limit hole 574. The connecting column 585 passes through the first limit hole 574, the through hole, and the second limit hole 574 in sequence, and one end of the elastic member close to the crank arm 58 is connected to the connecting column 585. The arrangement of the limit hole 574 and the connecting column 585 ensures the elongation and contraction of the elastic member and effectively avoids excessive rotation of the crank arm 58.

[0103] In some embodiments, the opening module 60 further includes a return spring 64. The return spring 64 is arranged on the second connecting shaft 62 and is connected to the release plate 61. The arrangement of the return spring 64 can also provide a return force for the return movement of the release plate 61, further facilitating the return of the release plate 61 and ensuring that the release plate 61 can reliably return to the opening state.

[0104] In some embodiments, the toggle arm 58 includes a roller 582. The roller 582 is provided at one end of the toggle arm 58 away from the fixed part 57 to form an abutting part 581. It can be understood that when the circuit breaker is in the closed state, the roller 582 abuts against the first end 611 of the release plate 61. Further, the toggle arm 58 includes a first toggle arm 583 and a second toggle arm 584, and the first toggle arm 583 and the second toggle arm 584 are arranged at intervals relative to each other. The roller 582 is clamped between the first toggle arm 583 and the second toggle arm 584.

[0105] See Figure 3 , when the release plate 61 is in the open position, the roller 582 is close to the arc side 615 between the first end 611 and the second end 612 of the release plate 61. See Figure 4 , when the energy in the energy storage module 40 is released, while the cam 51 drives the fixed part 57 to rotate forward, the fixed part 57 drives the release plate 61 to rotate backward. The roller 582 on the support arm abuts against the arc side 615 of the release plate 61 and moves along the arc side 615 toward the direction of the first end 611 until the roller 582 abuts against the first end 611 of the release plate 61, and the second end 612 of the release plate 61 abuts against the opening holding shaft 63. It can be understood that the setting of the roller 582 effectively reduces the friction between the toggle arm 58 and the release plate 61, which is beneficial to the rotation of the fixed part 57.

[0106] Therefore, the complete process of the release plate 61 switching from the closed position to the open position is as follows: the opening holding shaft 63 rotates, the second end 612 of the release plate 61 loses force and rotates backward. At the same time, the first end 611 of the release plate 61 separates from the roller 582, the toggle arm 58 loses force and rotates toward the arc side 615 of the release plate 61. The release plate 61 collides with the roller 582, forming an extrusion on the toggle arm 58, and the elastic member elongates to form elastic potential energy. This elastic potential energy is transmitted to the toggle arm 58 and acts on the release plate 61 to form an impact reaction force. Under the action of the return spring 64, the release plate 61 quickly rotates forward, passes through the avoidance part 631 on the opening holding shaft 63 and returns to the open position.

[0107] It should be noted that after the release plate 61 is separated from the toggle arm 58, the abutting part 581 of the toggle arm 58 is located between the first end 611 and the second end 612 of the release plate 61. When the release plate 61 rotates forward, the toggle arm 58 can abut against the first end 611 of the release plate 61, thus effectively preventing the release plate 61 from rotating excessively when rotating forward.

[0108] The opening module 60 further includes an opening operating shaft 65, and the opening operating shaft 65 is in transmission connection with the opening holding shaft 63. An operator can control the rotation of the opening holding shaft 63 by operating the opening operating shaft 65 to manually release the limiting effect of the opening holding shaft 63 on the release plate 61, so that the release plate 61 can rotate. It should be noted that in some embodiments of the present application, an electric driving method can also be provided in the circuit breaker operating mechanism to drive the rotation of the opening holding shaft 63. It can be specifically set according to actual needs and will not be limited here.

[0109] It should be noted that when the closing module 50 drives the energy storage module 40 to release energy and the circuit breaker is switched from the open state to the closed state, the electric part 48 in the energy storage module 40 is in an electrically connected state, and the motor 481 in the electric part 48 will be energized to act, driving the third gear 482 to rotate, and driving the second gear 46 and the first gear 45 to rotate, so that the rotating shaft 43 rotates, and the spring 41 is stretched again, so that the energy storage module 40 stores energy again, preparing for the next closing operation of the circuit breaker.

[0110] In some embodiments of the present application, the circuit breaker operating mechanism further includes an auxiliary switch 70. The auxiliary switch 70 is arranged on the extension part 12 of the first mounting plate 10 and is electrically connected to the motor 481 in the electric part 48 and other electrical components in the circuit breaker operating mechanism. The auxiliary switch 70 is used to control the switching of the electrical circuit.

[0111] The circuit breaker operating mechanism in the present application has a compact structure, making the overall circuit breaker operating mechanism have the characteristic of miniaturization. Among them, the closing module 50 and the opening module 60 cooperate to keep the circuit breaker in the closed state. During the process of the circuit breaker being switched from the closed state to the open state, the closing module 50 can limit the release plate 61 in the opening module 60 to ensure that the release plate 61 stably and reliably returns to the open position. In addition, the electric part 48 is arranged on the extension part 12 of the first mounting plate 10, which is convenient for disassembly and assembly, and is convenient for the maintenance and replacement of related parts in the electric part 48.

[0112] The above embodiments are only illustrative examples of the structure. The structures in each embodiment are not fixedly combined structures. Without structural conflicts, the structures in multiple embodiments can be arbitrarily combined and used.

[0113] While the present utility model has been described with reference to several exemplary embodiments, it should be understood that the terms used are descriptive and exemplary rather than restrictive. Since the present utility model can be embodied in many forms without departing from the spirit or essence of the utility model, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be broadly construed within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A circuit breaker operating mechanism for controlling the closing and opening of a circuit breaker, the circuit breaker having an open state and a closed state, characterized in that, Including: An energy storage module for storing the energy to close the circuit breaker. A closing module for driving connection with the main shaft of the circuit breaker. The energy storage module is drivingly connected with the closing module. The closing module includes a fixed part and a toggle arm. The fixed part is drivingly connected with the main shaft. The toggle arm is rotatably arranged on the fixed part. The toggle arm is provided with an abutting part. The energy storage module releases energy to drive the fixed part to rotate, so that the circuit breaker is switched from the open state to the closed state. A tripping module, including a release plate and a tripping holding shaft. The release plate has a tripping position and a closing position. The release plate includes a first end and a second end. When the release plate is in the tripping position, the second end of the release plate is located on one side of the tripping holding shaft. The rotation of the fixed part drives the release plate to rotate in the reverse direction, so that the first end abuts against the abutting part, and the second end abuts against the tripping holding shaft, so that the circuit breaker is held in the closed state, and the release plate is in the closing position. The tripping holding shaft rotates, so that the tripping holding shaft is separated from the second end, the first end is separated from the abutting part, and the abutting part moves along the side surface of the release plate from the first end towards the second end until the abutting part abuts against the side surface of the release plate, so that the release plate rotates forward, and the release plate is in the tripping position.

2. The circuit breaker operating mechanism according to claim 1, wherein, The closing module includes an elastic member. One end of the elastic member is fixed on the fixed part, and the other end of the elastic member is connected with the end of the toggle arm far from the abutting part. During the process of the release plate changing from the closing position to the tripping position, the release plate presses the toggle arm, so that the elastic member elastically elongates.

3. The circuit breaker operating mechanism according to claim 2, characterized in that, The toggle arm includes a connecting column. The elastic member is connected with the connecting column. A limiting hole is formed in the fixed part. A through hole is formed in the end of the toggle arm far from the abutting part. The connecting column passes through the limiting hole and the through hole. The aperture of the limiting hole is larger than the aperture of the through hole and the diameter of the connecting column.

4. The circuit breaker operating mechanism according to claim 1, characterized in that, The toggle arm includes a roller. The roller is arranged at the end of the toggle arm far from the fixed part to form the abutting part. When the circuit breaker is in the closed state, the roller abuts against the first end of the release plate.

5. The circuit breaker operating mechanism according to claim 1, characterized in that, The release plate includes a first clamping arm and a second clamping arm. The first clamping arm and the second clamping arm are arranged at an angle. The free end of the first clamping arm is the first end, and the free end of the second clamping arm is the second end. An arc side is formed between the first clamping arm and the second clamping arm. The abutting part can rotate towards the arc side and abut against the arc side.

6. The circuit breaker operating mechanism according to claim 1, characterized in that, A recessed avoiding part is formed in the middle of the tripping holding shaft. When the release plate is in the closing position, the second end of the release plate abuts against the outer peripheral wall of the tripping holding shaft near the avoiding part. The tripping module further includes a tripping operating shaft. The tripping operating shaft is drivingly connected with the tripping holding shaft. The rotation of the tripping operating shaft can enable the second end of the release plate to pass through the avoiding part on the tripping holding shaft.

7. The circuit breaker operating mechanism according to claim 1, characterized in that, The energy storage module includes a spring, a connecting arm, a rotating shaft, a first gear, and a second gear. The connecting arm is fixedly connected to the rotating shaft and rotates following the rotating shaft. The first gear is sleeved on the rotating shaft and is fixed relative to the rotating shaft. The second gear meshes with the first gear. One end of the spring is fixedly connected to the connecting arm. When the second gear rotates, it can drive the first gear to rotate the rotating shaft, causing the spring to expand and contract following the connecting arm.

8. The circuit breaker operating mechanism according to claim 7, characterized in that, The energy storage module includes a manual part and / or an electric part, and the manual part and / or the electric part can drive the second gear to rotate.

9. The circuit breaker operating mechanism according to claim 8, characterized in that, The circuit breaker operating mechanism further includes a first mounting plate and a second mounting plate. The first mounting plate and the second mounting plate are arranged at intervals, and the other end of the spring is fixed on the second mounting plate. The first mounting plate is provided with an extension part extending in the direction from the first gear towards the second gear. If the energy storage module includes an electric part, the electric part is arranged on the extension part.

10. The circuit breaker operating mechanism according to claim 7, characterized in that, The closing module includes a cam, a limiting part, and a retaining block. The cam is sleeved on the rotating shaft, and the cam is arranged at an interval from the first gear. The limiting part is fixedly arranged on the cam. When the limiting part rotates with the cam, it can abut against the retaining block to fix the rotating shaft.

11. The circuit breaker operating mechanism according to claim 10, wherein The cam includes an arc surface, and the distance from one end to the other end of the arc surface to the axis of the rotating shaft increases to push the fixing part to rotate, so that the circuit breaker is switched from the open state to the closed state. The limiting part is arranged on the end of the cam with a longer distance from the axis of the rotating shaft.

12. The circuit breaker operating mechanism according to claim 10, wherein, The closing module further includes a closing retaining shaft and a closing operating shaft. The closing retaining shaft and the closing operating shaft are in transmission connection. A groove is recessed on the closing retaining shaft. When the limiting part abuts against the retaining block, the retaining block also abuts against the outer peripheral wall of the closing retaining shaft near the groove. When the closing operating shaft rotates, it can cause the retaining block to rotate and pass through the groove.

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