breaker

Abstract

The present invention relates to the field of low-voltage electrical appliances, and in particular to a circuit breaker, comprising a circuit breaker housing and a button mechanism disposed within the housing, an operating mechanism connected to the button mechanism, a movable contact connected to the operating mechanism, and a stationary contact used in conjunction with the movable contact; operating the button mechanism can drive the circuit breaker to close / open via the operating mechanism; the circuit breaker further comprises an electric mechanism disposed within the housing, the electric mechanism being driven and coordinated with the button mechanism or the operating mechanism, and the electric mechanism can drive the circuit breaker to close / open via the operating mechanism, or can drive the circuit breaker to close / open via the button mechanism; the circuit breaker of the present invention has an electric mechanism that enables remote control of the circuit breaker.

Description

Technical Field

[0001] The present invention relates to the field of low-voltage electrical appliances, and in particular to a circuit breaker. Background Art

[0002] Circuit breakers effectively improve the safety of electrical equipment. They are categorized by installation method, including plug-in, fixed, and drawer-type. With the miniaturization of electrical equipment, the overall structure and operation of corresponding circuit breakers also need to be gradually upgraded. Plug-in circuit breakers are widely used in communications equipment due to their compact structure, space-saving design, and easy installation. However, with the development of the Internet of Things (IoT), existing plug-in circuit breakers cannot meet the requirements of remote monitoring and control. Summary of the Invention

[0003] The object of the present invention is to overcome the defects of the prior art and provide a circuit breaker whose electric mechanism realizes remote control of the circuit breaker.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A circuit breaker includes a circuit breaker housing 1 and a button mechanism 2 disposed within the circuit breaker housing 1, an operating mechanism connected to the button mechanism 2, a movable contact 60 connected to the operating mechanism, and a stationary contact 61 used in conjunction with the movable contact 60. Operating the button mechanism 2 can drive the circuit breaker to close / open via the operating mechanism. The circuit breaker also includes an electric mechanism 2c disposed within the circuit breaker housing 1. The electric mechanism 2c is driven and cooperates with the button mechanism 2 or the operating mechanism. The electric mechanism 2c can drive the circuit breaker to close / open via the operating mechanism, or the electric mechanism 2c can drive the circuit breaker to close / open via the button mechanism 2.

[0006] Preferably, the operating mechanism includes a connecting rod mechanism, a transmission member 4 pivotally arranged on the circuit breaker housing 1, and a lever mechanism, the connecting rod mechanism includes a connecting rod structure 33 and a transmission connecting rod 32; the button mechanism 2 is driven and connected to the transmission member 4 through the connecting rod structure 33, the transmission member 4 is driven and connected to the lever mechanism through the transmission connecting rod 32, and the lever mechanism is driven and connected to the moving contact 60; when the button mechanism 2 is operated to close / open the circuit breaker, the button mechanism 2 drives the transmission member 4 to rotate in the first direction / second direction through the connecting rod structure 33, and the second direction is opposite to the first direction.

[0007] Preferably, the operating mechanism further includes a trip latch 50, a lock latch 51 and a rotating plate 52 pivotally arranged on the circuit breaker housing 1, the trip latch 50 and the lock latch 51 are respectively pivotally arranged on the rotating plate 52, the trip latch 50 and the lock latch 51 are locked together, and the rotating plate 52 is driven and connected to the moving contact 60.

[0008] Preferably, the button mechanism 2 includes a first button 20 slidably arranged in the circuit breaker housing 1, and the connecting rod structure 33 includes a first connecting rod 30. The first button 20 is driven and connected to the transmission member 4 through the first connecting rod 30; when the first button 20 is pressed toward the inside of the circuit breaker housing 1 to close the circuit breaker, the first button 20 drives the transmission member 4 to rotate in the first direction; when the first button 20 is pulled toward the outside of the circuit breaker housing 1 to open the circuit breaker, the first button 20 drives the transmission member 4 to rotate in the second direction, and the electric mechanism 2c cooperates with the first button 20 to drive the circuit breaker to close / open.

[0009] Preferably, the button mechanism 2 further includes a first button 20 and a second button 21 slidably arranged in the circuit breaker housing 1, the first button 20 and the second button 21 are arranged in parallel and move synchronously in opposite directions; the connecting rod structure 33 includes a first connecting rod 30 and a second connecting rod 31, the first button 20 is driven and connected to the transmission member 4 through the first connecting rod 30, and the second button 21 is driven and connected to the transmission member 4 through the second connecting rod 31; when the first button 20 is pressed toward the inside of the circuit breaker housing 1 to close the circuit breaker, the first button 20 drives the transmission member 4 to rotate in the first direction, and the second button 21 moves toward the outside of the circuit breaker; when the second button 21 is pressed toward the inside of the circuit breaker housing 1 to open the circuit breaker, the second button 21 drives the transmission member 4 to rotate in the second direction through the second connecting rod 31, and the first button 20 moves toward the outside of the circuit breaker housing 1, and the electric mechanism 2c cooperates with the first button 20 or the second button 21 to close / open the circuit breaker.

[0010] Preferably, the electric mechanism 2c includes a drive motor 20c, a transmission gear set and a transmission rack 26c. The drive motor 20c is driven and matched with the transmission rack 26c through the transmission gear set, and the transmission rack 26c is driven and matched with the button mechanism 2.

[0011] Preferably, the first button 20 includes a rack limiting groove 2030 provided on one side thereof, the transmission rack 26c is provided in the rack limiting groove 2030, and the rack limiting groove 2030 includes a closing side surface 2032 and an opening side surface 2031 provided at both ends thereof respectively;

[0012] When the circuit breaker is closed, the transmission rack 26c moves from the first initial position toward the closing side surface 2032 until it contacts the closing side surface 2032, and the transmission rack 26c continues to move and drives the first button 20 to move toward the inside of the circuit breaker housing 1 through the closing side surface 2032. After the circuit breaker is closed, the transmission rack 26c returns to the first initial position. When the circuit breaker is opened, the transmission rack 26c moves toward the opening side surface 2031 until it contacts the opening side surface 2031, and the transmission rack 26c continues to move and drives the first button 20 to move toward the outside of the circuit breaker housing 1 through the opening side surface 2031. After the circuit breaker is opened, the transmission rack 26c returns to the first initial position.

[0013] Preferably, the circuit breaker housing 1 includes a first button hole and a track groove 101 provided thereon, one end of the first button 20 is slidably provided in the first button hole, the first button 20 includes a first button track platform 201 provided at the other end thereof, and the first button track platform 201 is slidably provided in the track groove 101; the transmission rack 26c includes a rack track bar 261c provided on one side thereof, and the rack track bar 261c is slidably provided in the track groove 101.

[0014] Preferably, the first button 20 is fixedly connected to the transmission rack 26c, and the transmission gear set includes a first sector gear 251c drivingly engaged with the transmission rack 26c;

[0015] When the circuit breaker is closed, the first sector gear 251c rotates in the first direction and drives the first button 20 to move toward the inside of the circuit breaker housing 1 through the transmission rack 26c. The circuit breaker is closed and the first sector gear 251c rotates until it is disengaged from the transmission rack 26c. When the circuit breaker is opened, the first sector gear 251c rotates in the second direction and drives the first button 20 to move toward the outside of the circuit breaker housing 1 through the transmission rack 26c. The circuit breaker is opened and the first sector gear 251c rotates until it is disengaged from the transmission rack 26c.

[0016] Preferably, the circuit breaker housing 1 includes a first button hole and a track groove 101 provided thereon, one end of the first button 20 is slidably provided in the first button hole, and the first button 20 includes a first button track platform 201 provided at the other end thereof, and the first button track platform 201 is slidably provided in the track groove 101.

[0017] Preferably, the electric mechanism 2c cooperates with the transmission member 4 to drive the circuit breaker to close / open. The electric mechanism 2c includes a drive motor 20c, a transmission gear set, and a transmission member gear 27c coaxially arranged with the transmission member 4. The transmission gear set includes a closing and opening drive gear that cooperates with the transmission member gear 27c.

[0018] The opening and closing driving gear drives the transmission gear 27c to rotate, and the transmission gear 27c drives the transmission member 4 to rotate, so as to close / open the circuit breaker.

[0019] Preferably, the transmission member 4 and the transmission member gear 27c are coaxially linked, and the opening and closing driving gear is the first sector gear 251c;

[0020] When the circuit breaker is closed, the first sector gear 251c rotates in the second direction until it meshes with the transmission gear 27c and drives the transmission gear 27c to rotate in the first direction. The transmission gear 27c drives the transmission member 4 to rotate in the first direction. The circuit breaker is closed and the first sector gear 251c rotates until it disengages from the transmission gear 27c. When the circuit breaker is opened, the first sector gear 251c rotates in the first direction until it meshes with the transmission gear 27c and drives the transmission gear 27c to rotate in the second direction. The transmission gear 27c drives the transmission member 4 to rotate in the second direction. The circuit breaker is opened and the first sector gear 251c rotates until it disengages from the transmission gear 27c.

[0021] Preferably, when the circuit breaker is closed, the opening and closing driving gear rotates in the second direction and drives the transmission member gear 27c to rotate from the second initial position to the first direction until it is limited to the transmission member 4, and the transmission member gear 27c drives the transmission member 4 to rotate in the first direction, and the circuit breaker is closed and the opening and closing driving gear rotates in the first direction to drive the transmission member gear 27c to rotate back to the second initial position; when the circuit breaker is opened, the opening and closing driving gear rotates in the first direction and drives the transmission member gear 27c to rotate from the second initial position to the second direction until it is limited to the transmission member 4, and the transmission member gear 27c drives the transmission member 4 to rotate in the second direction, and the circuit breaker is opened and the opening and closing driving gear rotates in the second direction to drive the transmission member gear 27c to rotate back to the second initial position.

[0022] Preferably, the electric mechanism 2c cooperates with the transmission member 4 to drive the circuit breaker to close, and cooperates with the lock catch 51 to drive the circuit breaker to trip and open. The electric mechanism 2c includes a drive motor 20c, a transmission gear set, and a transmission member gear 27c coaxially arranged with the transmission member 4. The transmission gear set includes a fourth transmission gear 250c drivingly cooperated with the transmission member gear 27c and a first sector gear 251c coaxially linked with the fourth transmission gear 250c; the operating mechanism also includes a trip lever 3c drivingly connected to the lock catch 51 and pivotally arranged; the fourth transmission gear 250c drives the trip lever 3c to rotate, and the trip lever 3c simultaneously drives the lock catch 51 to rotate so that the lock catch 51 and the trip catch 50 are released from the lock, thereby opening the circuit breaker;

[0023] When the circuit breaker is closed, the first sector gear 251c rotates from the third initial position to the second direction until it meshes with the transmission gear 27c and drives the transmission gear 27c to rotate from the second initial position to the first direction. The transmission gear 27c drives the transmission member 4 to rotate in the first direction. The circuit breaker is closed and the first sector gear 251c rotates to disengage from the transmission gear 27c. The transmission gear 27c automatically rotates back to the second initial position and the transmission member 4 remains in the position when the circuit breaker is closed. When the circuit breaker is opened, the first sector gear 251c and the fourth transmission gear 250c continue to rotate in the second direction. The fourth transmission gear 250c drives the trip lever 3c to rotate. The trip lever 3c drives the lock catch 51 to rotate in the second direction. The lock catch 51 releases the lock engagement with the trip catch 50. The circuit breaker is opened and the first sector gear 251c continues to rotate to the third initial position.

[0024] Preferably, the first button 20 includes a first button operating portion 202, a first button transmission portion 203, and a second button track bar 205. One end of the first button operating portion 202 is a first button operating end, and the other end is stacked and connected to one end of the first button transmission portion 203. The other end of the first button transmission portion 203 is provided with a first button connection hole 204 and a first button track platform 201. The second button track bar 205 is arranged on one side of the first button transmission portion 203, and the second button track bar 205 and the first button operating portion 202 are located on the same side of the first button transmission portion 203. The first button connection hole 204 is connected to one end of the first connecting rod 30 of the operating mechanism. The first button track platform 201 is slidably arranged in the track groove 101 of the circuit breaker housing 1.

[0025] The second button 21 includes a second button operating part 212, a second button transmission part 213, a second button rail part 215 and a second button connecting hole 214. One end of the second button operating part 212 is the second button operating end, and the other end is connected to one end of the second button transmission part 213. The other end of the second button transmission part 213 is provided with a second button connecting hole 214, and the second button rail part 215 is arranged on one side of the second button transmission part 213. The side of the second button rail part 215 facing the first button transmission part 203 is provided with a second button rail groove that slides with the second button rail bar 205.

[0026] Preferably, the first button 20 also includes a rack limiting groove 2030 arranged in the first button transmission part 203, and the rack limiting groove 2030 and the second button track bar 205 are respectively located on both sides of the first button transmission part 203; the first button transmission part 203 also includes a closing side wall 207 and an opening side wall 206 respectively arranged at both ends of the rack limiting groove 2030, and the inner side surfaces of the closing side wall 207 and the opening side wall 206 are the closing side 2032 and the opening side 2031 respectively, and the first button track platform 201 is arranged at one end of the closing side wall 207.

[0027] The circuit breaker of the present invention includes a button mechanism, an operating mechanism and an electric mechanism. The electric mechanism cooperates with the button mechanism or the operating mechanism. The user can manually operate the button mechanism to drive the circuit breaker to close / open, or can cooperate with the electric mechanism and the operating mechanism or the electric mechanism and the button mechanism to drive the circuit breaker to close / open. This not only enriches the operation method of the circuit breaker, but also realizes remote control of the circuit breaker through the electric mechanism.

[0028] In addition, the circuit breaker of the present invention includes a first button and a second button, which correspond to the closing operation and the opening operation of the circuit breaker, respectively. Firstly, the user can judge the closing / opening state of the circuit breaker by observing the status of the two buttons (that is, when the first button is pressed and the second button pops up, the circuit breaker is in the closed state; when the first button pops up and the second button is pressed, the circuit breaker is in the open state). Secondly, compared with the existing circuit breaker that uses a pull-out button for opening operation, the circuit breaker of the present invention completes the closing and opening operations by pressing the first button and the second button respectively, which can avoid the situation where the circuit breaker is pulled out of the circuit breaker assembly position (such as a cabinet, etc.) due to excessive force when pulling the button. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 1 is a schematic structural diagram of a first embodiment of a circuit breaker of the present invention;

[0030] Figure 2 1 is a schematic structural diagram of a first embodiment of a circuit breaker of the present invention, at least showing the structure of the track groove;

[0031] Figure 3 It is a structural schematic diagram of the transmission rack of the present invention;

[0032] Figure 4 is a structural diagram of the first button of the present invention;

[0033] Figure 5 is a structural diagram of the second button of the present invention;

[0034] Figure 6 It is a structural schematic diagram of the transmission member of the present invention;

[0035] Figure 7A 1. It is a schematic diagram of the closing principle of the first embodiment of the circuit breaker of the present invention;

[0036] Figure 7B This is a schematic diagram of the transmission rack resetting after the first embodiment of the circuit breaker of the present invention completes closing;

[0037] Figure 8A 1. It is a schematic diagram of the opening principle of the circuit breaker of the first embodiment of the present invention;

[0038] Figure 8BThis is a schematic diagram of the transmission rack resetting after the first embodiment of the circuit breaker of the present invention completes opening;

[0039] Figure 9 is a structural schematic diagram of a second embodiment of a circuit breaker of the present invention;

[0040] Figure 10A 1 is a schematic structural diagram of a third embodiment of a circuit breaker according to the present invention, wherein the circuit breaker is in an open state;

[0041] Figure 10B 1 is a schematic structural diagram of a third embodiment of a circuit breaker according to the present invention, wherein the circuit breaker is in a closed state;

[0042] Figure 11A 1 is a schematic structural diagram of a fourth embodiment of a circuit breaker according to the present invention, wherein the circuit breaker is in an open state;

[0043] Figure 11B 1 is a schematic structural diagram of a fourth embodiment of a circuit breaker according to the present invention, wherein the circuit breaker is in a closed state;

[0044] Figure 12A 1 is a schematic structural diagram of a sixth embodiment of a circuit breaker according to the present invention, wherein the circuit breaker is in a closed state;

[0045] Figure 12B 2. It is a schematic structural diagram of a sixth embodiment of a circuit breaker according to the present invention, in which the fourth transmission gear of the transmission gear set drives the lock catch via a trip lever;

[0046] Figure 13A is a schematic structural diagram of the circuit breaker of the present invention, illustrating the cooperation relationship between the first locking member and the unlocking mechanism;

[0047] Figure 13B This invention Figure 13A A schematic diagram of the enlarged structure of part A;

[0048] Figure 14 is a schematic structural diagram of the circuit breaker of the present invention, showing the location of the control circuit board;

[0049] Figure 15A This is a fifth embodiment of the circuit breaker of the present invention, the circuit breaker is in the open state;

[0050] Figure 15B This is a fifth embodiment of the circuit breaker of the present invention, wherein the circuit breaker switches from an open state to a closed state;

[0051] Figure 15C This is the fifth embodiment of the circuit breaker of the present invention, and the circuit breaker is in the closed state. DETAILED DESCRIPTION

[0052] The following is combined with Figure 1-15CThe following examples are provided to further illustrate the specific implementation of the circuit breaker of the present invention. The circuit breaker of the present invention is not limited to the description of the following examples.

[0053] The circuit breaker of the present invention includes a circuit breaker housing 1 and a button mechanism 2 arranged in the circuit breaker housing 1, an operating mechanism connected to the button mechanism 2, a movable contact 60 connected to the operating mechanism, and a static contact 61 used in conjunction with the movable contact 60; operating the button mechanism 2 can drive the circuit breaker to close / open through the operating mechanism; the circuit breaker also includes an electric mechanism 2c arranged in the circuit breaker housing 1, the electric mechanism 2c is driven and cooperated with the button mechanism 2 or the operating mechanism, and the electric mechanism 2c can drive the circuit breaker to close / open through the operating mechanism, or the electric mechanism 2c can drive the circuit breaker to open / close through the cooperation of the button mechanism 2 and the operating mechanism. The circuit breaker of the present invention includes a button mechanism 2, an operating mechanism and an electric mechanism 2c. The electric mechanism 2c cooperates with the button mechanism 2 or the operating mechanism. The user can manually operate the button mechanism 2 to drive the circuit breaker to close / open, or can drive the circuit breaker to close / open through the cooperation of the electric mechanism 2c and the operating mechanism or the cooperation of the electric mechanism 2c and the button mechanism 2. This not only enriches the operation method of the circuit breaker, but also realizes remote control of the circuit breaker through the electric mechanism 2c.

[0054] Further, as a preferred embodiment of the present invention, the button mechanism 2 includes a first button 20 and a second button 21 respectively slidably arranged in the circuit breaker housing 1, the operating mechanism includes a connecting rod mechanism, a transmission member 4 pivotally arranged on the circuit breaker housing 1, and a lever mechanism, the connecting rod mechanism includes a connecting rod structure 33 and a transmission connecting rod 32, the connecting rod structure 33 includes a first connecting rod 30 and a second connecting rod 31, the first button 20 is driven and connected to the transmission member 4 through the first connecting rod 30, the second button 21 is driven and connected to the transmission member 4 through the second connecting rod 31, the transmission member 4 is driven and connected to the lever mechanism through the transmission connecting rod 32, and the lever mechanism is driven and connected to the moving contact 60; when the first button 20 / the second button 21 is pressed toward the inside of the circuit breaker housing 1 to close / open the circuit breaker, the first button 20 / the second button 21 drives the transmission member 4 to rotate in the first direction / the second direction through the first connecting rod 30 / the second connecting rod 31, and the second direction is opposite to the first direction. The circuit breaker of the present invention includes a first button 20 and a second button 21, which correspond to the closing operation and the opening operation of the circuit breaker, respectively. Firstly, the user can determine the closing / opening state of the circuit breaker by observing the status of the two buttons (i.e., when the first button 20 is pressed and the second button 21 pops up, the circuit breaker is in the closed state; when the first button 20 pops up and the second button 21 is pressed, the circuit breaker is in the open state). Secondly, compared with the existing circuit breaker that uses a pull-button to perform the opening operation, the circuit breaker of the present invention completes the closing and opening operations by pressing the first button 20 and the second button 21 respectively, which can avoid the situation where the circuit breaker is pulled out of the circuit breaker assembly position (such as a cabinet, etc.) due to excessive force when pulling the buttons.

[0055] The circuit breaker of the present invention further includes a short-circuit protection mechanism 7, an overload protection mechanism 9, an arc extinguishing system 8, an incoming terminal 1i, and an outgoing terminal 1o, which are arranged within the circuit breaker housing 1. The short-circuit protection mechanism 7 and the overload protection mechanism 9 are respectively driven and cooperated with the operating mechanism; the outgoing terminal 1o and the push button mechanism 2 are arranged at one end of the circuit breaker housing 1, and the incoming terminal 1i is arranged at the other end of the circuit breaker housing 1; the operating mechanism is located between the push button mechanism 2 and the incoming terminal 1i; the arc extinguishing system 8 and the short-circuit protection mechanism 7 are arranged side by side between the operating mechanism and the incoming terminal 1i; the electric mechanism 2c is located between the operating mechanism and the outgoing terminal 1o, and the electric mechanism 2c and the outgoing terminal 1o are located on the same side of the push button mechanism 2; and the overload protection mechanism is located on the same side of the operating mechanism and between the arc extinguishing system 8 and the outgoing terminal 1o. In the circuit breaker of the present invention, the incoming terminal 1i and the outgoing terminal 1o are respectively arranged at opposite ends of the circuit breaker housing 1, which helps to increase the creepage distance between the two and improve the electrical safety of the circuit breaker. The electric mechanism 2c is located between the operating mechanism and the outgoing terminal 1o, and the electric mechanism 2c and the outgoing terminal 1o are located on the same side of the button mechanism 2. The internal space of the circuit breaker housing 1 is rationally designed and the various components are compactly arranged, which maximizes the utilization of the internal space of the circuit breaker housing 1 and helps to reduce the overall volume of the circuit breaker.

[0056] Furthermore, the circuit breaker of the present invention includes a control circuit board 1c connected to the motor-driven mechanism 2c. The bottom plate of the circuit breaker housing 1 is located on one side of the control circuit board 1c, while the motor-driven mechanism 2c, operating mechanism, and arc extinguishing system 8 are located on the other side of the control circuit board 1c. This stacked arrangement provides ample assembly space for the control circuit board 1c, thereby increasing its size, reducing the difficulty of component layout on the control circuit board 1c, and simplifying the wiring process for the control circuit board 1c. More importantly, the conductive traces on the control circuit board 1c can be connected to the incoming terminal 1i, avoiding the soldering and wiring difficulties associated with separate flexible wire connections.

[0057] The circuit breaker of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0058] like Figure 1 、 9 As shown in Figure 15C, the circuit breaker of the present invention includes a circuit breaker housing 1 and a button mechanism 2 arranged in the circuit breaker housing 1, an operating mechanism connected to the button mechanism 2, a moving contact 60 driven by the operating mechanism, and a static contact 61 used in conjunction with the moving contact 60; operating the button mechanism 2 can drive the circuit breaker to close / open, so that the moving contact 60 and the static contact 61 are closed / opened.

[0059] Preferably, Figure 1As shown, the operating mechanism also includes a connecting rod mechanism, a transmission member 4 pivotally arranged on the circuit breaker housing 1, and a lever mechanism. The connecting rod mechanism includes a connecting rod structure 33 and a transmission connecting rod 32. The button mechanism 2 is driven and connected to the transmission member 4 through the connecting rod structure 33, and the transmission member 4 is driven and connected to the lever mechanism through the transmission connecting rod 32. The lever mechanism is driven and connected to the moving contact 60. When the button mechanism 2 is operated to close / open the circuit breaker, the button mechanism 2 drives the transmission member 4 to rotate in a first direction / second direction through the connecting rod structure 33, and the second direction is opposite to the first direction. The electric mechanism 2c is driven and cooperated with the button mechanism 2 or the transmission member 4.

[0060] Preferably, Figure 1 As shown, the lever mechanism includes a trip latch 50, a lock latch 51, and a rotating plate 52 pivotally mounted on the circuit breaker housing 1. The trip latch 50 and the lock latch 51 are respectively pivotally mounted on the rotating plate 52. The trip latch 50 and the lock latch 51 engage with each other in a locking manner, and the rotating plate 52 is drivingly connected to the movable contact 60. It should be noted that the lever mechanism can adopt a four-bar linkage or other multi-link structure, which falls within the scope of the prior art and will not be further described here.

[0061] Specifically, such as Figure 1 In the directions shown, the first direction is clockwise and the second direction is counterclockwise.

[0062] Preferably, Figure 9 As shown, the button mechanism 2 includes only one button. The button mechanism 2 includes a first button 20 slidably arranged in the circuit breaker housing 1, and the connecting rod structure 33 includes a first connecting rod 30. The first button 20 is connected to the transmission member 4 through the first connecting rod 30. When the first button 20 is pressed toward the inside of the circuit breaker housing 1 to close the circuit breaker, the first button 20 drives the transmission member 4 to rotate in the first direction. When the first button 20 is pulled toward the outside of the circuit breaker housing 1 to open the circuit breaker, the first button 20 drives the transmission member 4 to rotate in the second direction. Further, as Figure 9 As shown, one end of the first button 20 protrudes from the outside of the circuit breaker housing 1, and the other end is driven and connected to the transmission member 4 through the first connecting rod 30. When the first button 20 is pressed downward to close the circuit breaker, the first button 20 drives the transmission member 4 to rotate clockwise through the first connecting rod 30. When the first button 20 is pulled upward to open the circuit breaker, the first button 20 drives the transmission member 4 to rotate counterclockwise through the first connecting rod 30.

[0063] Preferably, Figure 1 、 7AAs shown in Figures 8B, 10A-13A, and 15A-15C, the button mechanism 2 includes an embodiment of two buttons, which is a preferred embodiment of the present invention. The button mechanism 2 includes a first button 20 and a second button 21 slidably disposed within the circuit breaker housing 1. The first button 20 and the second button 21 are arranged in parallel and move synchronously in opposite directions. The connecting rod structure 33 includes a first connecting rod 30 and a second connecting rod 31. The first button 20 is driven and connected to the transmission member 4 via the first connecting rod 30, and the second button 21 is driven and connected to the transmission member 4 via the second connecting rod 31. When the first button 20 is pressed toward the interior of the circuit breaker housing 1 to close the circuit breaker, the first button 20 drives the transmission member 4 to rotate in the first direction, while the second button 21 moves toward the exterior of the circuit breaker. When the second button 21 is pressed toward the interior of the circuit breaker housing 1 to open the circuit breaker, the second button 21 drives the transmission member 4 to rotate in the second direction via the second connecting rod 31, while the first button 20 moves toward the exterior of the circuit breaker.

[0064] The following is the basic process of normal closing operation, normal opening operation and fault opening of the circuit breaker of the present invention:

[0065] like Figure 10A As shown, the circuit breaker is in the open state. When the closing operation is performed, the first button 20 is pressed downward. The first button 20 drives the transmission member 4 to rotate clockwise through the first connecting rod 30. The transmission member 4 drives the lever mechanism to rotate clockwise as a whole through the transmission connecting rod 32. The lever mechanism drives the moving contact 60 to swing clockwise, so that the moving contact 60 and the static contact 61 are closed, and the circuit breaker is closed (as shown in FIG. Figure 10B As shown), the second button 21 moves toward the outside of the circuit breaker; Figure 10B As shown, the circuit breaker is in the closed state. When the opening operation is performed, the second button 21 is pressed downward. The second button 21 drives the transmission member 4 to rotate counterclockwise through the second connecting rod 31. The transmission member 4 drives the tripping buckle 50 and the lock buckle 51 to release the lock engagement through the transmission connecting rod 32. The rotating plate 52 drives the moving contact 60 to swing counterclockwise, disconnecting the moving contact 60 from the static contact 61, and the circuit breaker is opened (as shown in FIG. Figure 10A As shown), the first button 20 moves toward the outside of the circuit breaker.

[0066] When a short circuit or overload fault occurs in the circuit breaker, the short circuit protection mechanism 7 or the overload protection mechanism 9 drives the lock 51 to rotate counterclockwise, so that the lock 51 and the tripping buckle 50 are released from the lock, and the rotating plate 52 drives the moving contact 60 to swing counterclockwise, so that the moving contact 60 and the static contact 61 are disconnected, and the circuit breaker is opened (such as Figure 10A shown).

[0067] Preferably, Figure 6 FIG. 1 shows an implementation of the transmission member 4 .

[0068] like Figure 6 As shown, the transmission member 4 includes a transmission member shaft hole 400 provided in the middle thereof and a first connection hole 40, a second connection hole 41, and a third connection hole 42 provided around the transmission member shaft hole 400; the first connection hole 40, the second connection hole 41, and the third connection hole 42 are respectively located at the three vertices of a triangle, the second connection hole 41 is provided at one end of the transmission member 4, and the first connection hole 40 and the third connection hole 42 are provided at the other end of the transmission member 4. Specifically, as Figure 6 In the direction shown, the transmission member shaft hole 400 is set in the middle of the transmission member 4, the second connecting hole 41 is set at the left end of the transmission member 4 and is located on the left side of the transmission member shaft hole 400, and the first connecting hole 40 and the third connecting hole 42 are set at the right end of the transmission member 4 and both are located on the right side of the transmission member shaft hole 400.

[0069] Preferably, Figures 13A-13B As shown, the circuit breaker of the present invention further includes a first locking member 1a having one end protruding from the outside of the circuit breaker housing 1; the circuit breaker housing 1 includes a locking member opening that cooperates with the first locking member 1a, and a first return spring 5a drives one end of the first locking member 1a to extend through the locking member opening to the outside of the circuit breaker housing 1. When the circuit breaker is in the open state, the first locking member 1a is subjected to an external retraction force and can be retracted into the inside of the circuit breaker housing 1. After the first locking member 1a is retracted, it can cooperate with the first button 20 and / or the second button 21 to prevent the circuit breaker from performing a closing operation. When the circuit breaker is in the closed state, the first locking member 1a protrudes from the outside of the circuit breaker housing 1 and is limited by the closing button 20 and / or the opening button 21 and cannot be retracted into the inside of the circuit breaker housing 1. For example, when the circuit breaker is installed in the circuit breaker assembly position in the open state, the assembly position shell of the circuit breaker assembly position squeezes the first locking piece 1a to move it toward the inside of the circuit breaker housing 1 (the assembly position shell applies a retracting external force to the first locking piece 1a), so that the first locking piece 1a is limitedly engaged with the first button 20 and / or the second button 21, locking the first button 20 and / or the second button 21. After the circuit breaker is assembled in place, the locking piece opening corresponds to the assembly limit hole of the assembly position shell, and the first locking piece 1a protrudes out of the circuit breaker housing 1 again and releases the limited engagement with the first button 20 and / or the second button 21, unlocking the first button 20 and / or the second button 21 and the first locking piece 1a is limitedly engaged with the assembly position shell, so that the circuit breaker can perform normal closing and opening operations through the first button 20 and / or the second button 21, and is not allowed to be pulled out of the assembly position at will.

[0070] Further, such as Figures 13A-13BAs shown, the circuit breaker also includes an unlocking mechanism, which includes an independent pulling member 2a arranged in the circuit breaker housing 1 and driven by the first locking member 1a; when the circuit breaker is in the open state, the pulling member 2a is pulled toward the outside of the circuit breaker housing 1, and the pulling member 2a drives the first locking member 1a to overcome the elastic force of the first reset spring 5a and move toward the inside of the circuit breaker housing 1, retract into the inside of the circuit breaker housing 1, release the limiting cooperation with the assembly position shell and limit the cooperation with the first button 20 and / or the second button 21. At this time, further pulling the pulling member 2a can pull the circuit breaker out of the circuit breaker assembly position; when the circuit breaker is in the closed state, the first button 20 and / or the second button 21 prevent the first locking member 1a from moving toward the inside of the circuit breaker housing 1, and at this time, the unlocking mechanism cannot be retracted into the inside of the circuit breaker housing 1 through the unlocking mechanism. Further, as Figures 13A-13B As shown, the unlocking mechanism also includes a linkage member 3a and a lever support 4a provided on the circuit breaker housing 1. One end of the linkage member 3a is connected to the first locking member 1a by driving, and the other end is driven and matched with the pulling member 2a by driving, and the middle part is in contact with the lever support 4a. When the pulling member 2a is pulled toward the outside of the circuit breaker housing 1, the pulling member 2a drives the linkage member 3a to rotate with the lever support 4a as the fulcrum. The linkage member 3a drives the first locking member 1a to move toward the inside of the circuit breaker housing 1 and release the limited fit with the assembly housing. Further, as Figure 13A As shown, the puller 2a is stacked on one side of the button mechanism 2 in the thickness direction of the circuit breaker housing 1, which is beneficial to improving the compactness of the circuit breaker structure. Figure 13A and 13B As shown, the moving direction of the pulling member 2 is parallel to the moving directions of the first button 20 and the second button 21 , and perpendicular to the moving direction of the first locking member 1 a .

[0071] Preferably, a locking member limiting groove is provided on the first button 20 and / or the second button 21, and a locking member limiting boss is provided on the first locking member 1a. When the circuit breaker is closed, the movement of the first button 20 and the second button 21 causes the locking member limiting groove and the locking member limiting boss to be misaligned, and the locking member limiting boss cannot slide into the locking member limiting groove. When the circuit breaker is opened, the movement of the first button 20 and the second button 21 causes the locking member limiting groove and the locking member limiting boss to be arranged relative to each other. Pulling the pulling member 2 can drive the first locking member 1a to move toward the inside of the circuit breaker housing 1, so that the locking member limiting boss slides into the locking member limiting groove. The first locking member 1a locks the first button 20 and / or the second button 21, and the circuit breaker cannot be closed.

[0072] like Figure 1-8B FIG. 1 shows a first embodiment of a circuit breaker according to the present invention.

[0073] like Figure 1 、 7AAs shown in FIG-8B , the button mechanism 2 of the circuit breaker of this embodiment includes a first button 20 and a second button 21; the electric mechanism 2c includes a drive motor 20c, a transmission gear set and a transmission rack 26c. The drive motor 20c is driven by the transmission rack 26c through the transmission gear set, and the transmission rack 26c is driven by the first button 20. Figure 4 As shown, the first button 20 includes a rack limiting groove 2030 arranged on one side thereof, the transmission rack 26c is arranged in the rack limiting groove 2030, and the rack limiting groove 2030 includes a closing side 2032 and an opening side 2031 respectively arranged at both ends thereof; the driving motor 20c drives the transmission rack 26c to slide in the rack limiting groove 2030, and drives the first button 20 through the closing side 2032 and the opening side 2031 to close / open the circuit breaker. When the circuit breaker is closed, the transmission rack 26c moves from the first initial position toward the closing side surface 2032 until it contacts the closing side surface 2032, and the transmission rack 26c continues to move and drives the first button 20 to move toward the inside of the circuit breaker housing 1 through the closing side surface 2032. After the circuit breaker is closed, the transmission rack 26c returns to the first initial position. When the circuit breaker is opened, the transmission rack 26c moves toward the opening side surface 2031 until it contacts the opening side surface 2031, and the transmission rack 26c continues to move and drives the first button 20 to move toward the outside of the circuit breaker housing 1 through the opening side surface 2031. After the circuit breaker is opened, the transmission rack 26c returns to the first initial position. In the circuit breaker of the present invention, the electric mechanism 2c achieves closing / opening operations through the cooperation of the transmission rack 26c and the button mechanism. After the electric mechanism 2c completes the closing / opening operation, it continues to drive the transmission rack 26c to return to the first initial position, thereby preventing interference with the first button 20. Firstly, the user can still manually close / open the circuit breaker. Secondly, when a short circuit or overload fault occurs in the circuit breaker, causing the circuit breaker to trip, the transmission rack 26c will not affect the operation of the operating mechanism, thereby ensuring the protective performance of the circuit breaker. It should be noted that the transmission rack 26c is not limited to cooperating with the first button 20. The transmission rack 26c can also cooperate with the second button 21. In this case, the rack limit slot 2030 is provided on the side of the second button 21. When the circuit breaker is closed / opened, the movement direction of the transmission rack 26c is opposite to that of the transmission rack 26c in the first embodiment.

[0074] The following will be combined Figure 1-2 7A-8B further illustrate the opening and closing process of the circuit breaker of this embodiment:

[0075] like Figure 1 and 2 As shown, the upper side wall of the circuit breaker housing 1 is used as the operation interface; Figures 7A-8BAs shown, the first button 20 moves toward the operation interface, that is, the first button 20 moves toward the outside of the circuit breaker housing 1, and moves away from the operation interface, that is, the first button 20 moves toward the inside of the circuit breaker housing 1; specifically, as shown Figure 8B As shown, at this time, the circuit breaker is in the open state, the transmission rack 26c is in the first initial position, and the drive motor 20c drives the transmission rack 26c to move rightward through the transmission gear set until it contacts the closing side 2032 of the rack limit groove 2030. The transmission rack 26c is driven to continue to move rightward and drives the first button 20 to move rightward through the closing side 2032, as shown. Figure 7A As shown, the circuit breaker is closed, and the transmission rack 26c is driven to move leftward to the first initial position (as shown in FIG. Figure 7B as shown); Figure 7B As shown, at this time, the circuit breaker is in the closed state, the transmission rack 26c is in the first initial position, and the drive motor 20c drives the transmission rack 26c to move leftward through the transmission gear set until it contacts the opening side 2032 of the rack limit groove 2030, as shown in FIG. Figure 8A As shown, the transmission rack 26c is driven to continue to move to the left and drives the first button 20 to move to the left through the opening side 2032, as shown in FIG. Figure 8B As shown, the circuit breaker is opened, and the transmission rack 26c is driven to move rightward to the first initial position.

[0076] Preferably, Figure 2-4 As shown, the circuit breaker housing 1 includes a first button hole, a second button hole and a track groove 101 provided thereon, one end of the first button 20 is slidably provided in the first button hole, and one end of the second button 21 is slidably provided in the second button hole. The first button 20 includes a first button track base 201 provided at the other end thereof, and the first button track base 201 is slidably provided in the track groove 101; the transmission rack 26c includes a rack track bar 261c provided on one side thereof, and the rack track bar 261c is slidably provided in the track groove 101. Further, as Figure 2 As shown, the circuit breaker housing 1 includes a first rib 1010, and the track groove 101 is arranged in the middle of the first rib 1010 and extends along the length direction of the first rib 1010. Figure 4 As shown, the first button 20 further includes a second button track strip 205 disposed thereon and extending along the length direction of the first button 20. Figure 5 As shown, the second button 21 includes a second button track portion 215 , and a second button track groove is provided on a side of the second button track portion 215 facing the first button 20 , and the second button track groove is slidably matched with the second button track bar 205 .

[0077] Specifically, such as Figure 1 Direction shown, Figure 1The side facing the reader is the front side of the circuit breaker. The first rib 1010 is arranged on the bottom plate of the circuit breaker housing 1, the first button hole is arranged on the upper side wall of the circuit breaker housing, the upper end of the first button 21 is slidably arranged in the first button hole, and the first button track platform 201 at the lower end is slidably arranged in the track groove 101. The transmission rack 26c is arranged on the front side of the first rib 1010, the first button 21 is arranged on the front side of the transmission rack 26c, and the second button track portion 215 is arranged on the front side of the first button 21, forming reliable limiting of the transmission rack 26c and the track groove 101, the first button 20 and the track groove 101, the first button 20 and the transmission rack 26c, and the second button 21 and the first button 20, thereby ensuring the operation reliability of the operating mechanism.

[0078] Preferably, Figure 1 As shown, the transmission gear set includes a turbine 21c drivingly connected to a drive motor 20c, a first transmission gear 22c meshing with the turbine 21c, a second transmission gear 23c coaxially linked to the first transmission gear 22c, a third transmission upper gear 240c meshing with the second transmission gear 23c, a third transmission lower gear 241c coaxially linked to the third transmission upper gear 240c, and a drive gear 25c meshing with the third transmission lower gear 241c. The drive gear 25c meshes with a transmission rack 26c. It should be noted that the number of transmission gear sets can be increased or decreased as needed.

[0079] Preferably, Figure 3 FIG. 1 shows an embodiment of the transmission rack 26 c.

[0080] The transmission rack 26c is elongated and slidably disposed within the circuit breaker housing 1. It includes a transmission rack block 260c, a rack disposed on one side of the transmission rack block 260c for cooperating with the transmission gear set, and a rack track 261c disposed on one side of the rack block 260c. Preferably, the sliding direction of the transmission rack 26c is parallel to the first button 20 and the second button 21, and the transmission rack 26c is disposed between the first button 20 and the second button 21.

[0081] Preferably, Figure 4 FIG. 1 shows an implementation of the first button 20 .

[0082] The first button 20 includes a first button operating part 202, a first button transmission part 203 and a second button track bar 205. One end of the first button operating part 202 is a first button operating end, and the other end is stacked and connected with one end of the first button transmission part 203. The other end of the first button transmission part 203 is provided with a first button connection hole 204 and a first button track platform 201. The second button track bar 205 is arranged on one side of the first button transmission part 203 and the second button track bar 205 and the first button operating part 202 are located on the same side of the first button transmission part 203. The first button connection hole 204 is connected to one end of the first connecting rod 30 of the operating mechanism. The first button track platform 201 is slidably arranged in the track groove 101 of the circuit breaker housing 1. Further, as Figure 4 As shown, the first button 20 further includes a rack limiting groove 2030 provided on one side of the first button transmission part 203, and the rack limiting groove 2030 and the second button track bar 205 are respectively located on both sides of the first button transmission part 203. Figure 4 As shown, the first button transmission part 203 also includes a closing side wall 207 and an opening side wall 206 arranged at both ends of the rack limiting groove 2030, the inner side surface of the closing side wall 207 is the closing side wall 2032, the inner side surface of the opening side wall 206 is the opening side wall 2031, and the first button track platform 201 is arranged at one end of the closing side wall 207.

[0083] Preferably, Figure 5 FIG. 2 shows an implementation of the second button 21 .

[0084] The second button 21 includes a second button operating portion 212, a second button transmission portion 213, a second button rail portion 215 and a second button connecting hole 214. One end of the second button operating portion 211 is a second button operating end, and the other end is connected to one end of the second button transmission portion 213. The other end of the second button transmission portion 213 is provided with a second button connecting hole 214. The second button rail portion 215 is provided on one side of the second button transmission portion 213. The side of the second button rail portion 215 facing the first button transmission portion 203 is provided with a second button rail groove that slides with the second button rail bar 205. Specifically, as Figure 5 In the direction shown, the second button track portion 215 is arranged on the right side of the second button transmission portion 213 .

[0085] Preferably, the first button 20 and the second button 21 are respectively located in the first button hole and the second button hole during the opening and closing operations, and do not protrude from the circuit breaker housing 1 to avoid accidental touching.

[0086] like Figure 9 FIG. 2 shows a second embodiment of the circuit breaker of the present invention.

[0087] The difference between this embodiment and the first embodiment is that: the button mechanism 2 includes only the first button 20, and one end of the first button 20 is protrudingly arranged outside the circuit breaker housing 1, and the opening and closing operations are realized by pressing and pulling respectively; the connecting rod structure 33 includes only the first connecting rod 30, and the first button 20 is driven and connected to the transmission member 4 via the first connecting rod 30.

[0088] Specifically, such as Figure 9 In the direction shown, the upper end of the first button 20 protrudes outside the circuit breaker housing 1, and the lower end is drivingly connected to the transmission member 4 through the first connecting rod 30. The electric mechanism 2c cooperates with the first button 20 through the transmission rack 26c to realize the opening and closing operations.

[0089] like Figure 10A and 10B FIG. 1 shows a third embodiment of the circuit breaker of the present invention.

[0090] The difference between this embodiment and the first embodiment is that: the first button 20 is fixedly connected to the transmission rack 26c, or the first button 20 and the transmission rack 26c are integrally formed, and the transmission gear set includes a first sector gear 251c that is driven and matched with the transmission rack 26c; when the circuit breaker is closed, the first sector gear 251c rotates in the first direction and drives the first button 20 to move toward the inside of the circuit breaker housing 1 through the transmission rack 26c, the circuit breaker is closed and the first sector gear 251c rotates until it is disengaged from the transmission rack 26c; when the circuit breaker is opened, the first sector gear 251c rotates in the second direction and drives the first button 20 to move toward the outside of the circuit breaker housing 1 through the transmission rack 26c, the circuit breaker is opened and the first sector gear 251c rotates until it is disengaged from the transmission rack 26c. In the circuit breaker of the present invention, the first sector gear 250c drives the operating mechanism through the transmission rack 26c, so that after the circuit breaker completes the closing / opening operation, the first sector gear 251c rotates to disengage from the transmission rack 26c, thereby not interfering with the first button 20. On the one hand, the user can still manually open / close the circuit breaker. On the other hand, when a short circuit or overload fault occurs in the circuit breaker, causing the circuit breaker to trip, the first sector gear 251c will not affect the operation of the operating mechanism, thereby ensuring the protection performance of the circuit breaker.

[0091] Specifically, such as Figure 10A As shown, the circuit breaker is in the open state, the first sector gear 251c is disengaged from the transmission rack 26c, the drive motor 20c drives the first sector gear 251c to rotate clockwise, the first sector gear 251c rotates until it is engaged with the transmission rack 26c and continues to rotate, and the first button 20 is driven downward by the transmission rack 26c, as shown in FIG. Figure 10BAs shown, after the circuit breaker is closed, the first sector gear 251c continues to rotate until it is disengaged from the transmission rack 26c; Figure 10B As shown, the circuit breaker is in the closed state, the first sector gear 251c is disengaged from the transmission rack 26c, the drive motor 20c drives the first sector gear 251c to rotate counterclockwise, the first sector gear 251c rotates until it is engaged with the transmission rack 26c and continues to rotate, and the first button 20 is driven to move upward through the transmission rack 26c, as shown in FIG. Figure 10A As shown, after the circuit breaker is opened, the first sector gear 251c continues to rotate until it is disengaged from the transmission rack 26c.

[0092] Preferably, Figure 10A As shown, the transmission gear set of this embodiment is different from that of the first embodiment in that the driving gear 25c includes a first sector gear 251c and a fourth transmission gear 250c that are coaxially linked, and the fourth transmission gear 250c is meshed with the third transmission gear 24c.

[0093] like Figure 11A and 11B FIG. 4 shows a fourth embodiment of the circuit breaker of the present invention.

[0094] This embodiment differs from the first embodiment in that the motorized mechanism 2c electrically opens and closes the circuit breaker by driving the transmission member 4 of the operating mechanism, enabling remote control. The motorized mechanism 2c includes a motor 20c, a transmission gear set, and a transmission gear 27c coaxially arranged with the transmission member 4. The transmission gear set includes an opening and closing drive gear that cooperates with the transmission gear 27c. The opening and closing drive gear rotates the transmission gear 27c, which in turn rotates the transmission member 4, closing and opening the circuit breaker.

[0095] Preferably, the transmission member 4 and the transmission member gear 27c are coaxially linked, and the opening and closing driving gear is the first sector gear 251c; when the circuit breaker is closed, the first sector gear 251c rotates in the second direction until it meshes with the transmission member gear 27c and drives the transmission member gear 27c to rotate in the first direction, and the transmission member gear 27c drives the transmission member 4 to rotate in the first direction, the circuit breaker is closed and the first sector gear 251c rotates to disengage from the transmission member gear 27c; when the circuit breaker is opened, the first sector gear 251c rotates in the first direction until it meshes with the transmission member gear 27c and drives the transmission member gear 27c to rotate in the second direction, and the transmission member gear 27c drives the transmission member 4 to rotate in the second direction, the circuit breaker is opened and the first sector gear 251c rotates to disengage from the transmission member gear 27c. In the circuit breaker of the present invention, the first sector gear 251c drives the operating mechanism through the transmission gear 27c, so that after the circuit breaker completes the closing / opening operation, the first sector gear 251c rotates to disengage from the transmission gear 27c, thereby not interfering with the transmission gear 27c (and the transmission member 4 linked to the transmission gear 27c). On the one hand, the user can still manually open / close the circuit breaker. On the other hand, when a short circuit or overload fault occurs in the circuit breaker, causing the circuit breaker to trip, the first sector gear 251c will not affect the operation of the operating mechanism, thereby ensuring the protection performance of the circuit breaker. Further, as Figure 11A and 11B As shown, the transmission gear 27c is a sector gear.

[0096] Specifically, such as Figure 11A As shown, the circuit breaker is in the open state, and the first sector gear 251c is disengaged from the transmission gear 27c. When the circuit breaker is closed, the drive motor 20c drives the first sector gear 251c to rotate counterclockwise until it engages with the transmission gear 27c. The first sector gear 251c is driven to continue to rotate and drives the transmission gear 27c to rotate clockwise. The transmission gear 27c drives the transmission member 4 to rotate clockwise, as shown in FIG. Figure 11B As shown, the circuit breaker is closed, and the first sector gear 251c is driven to continue rotating until it is disengaged from the transmission gear 27c; Figure 11B As shown, the circuit breaker is in the closed state, and the first sector gear 251c is disengaged from the transmission gear 27c. When the circuit breaker is opened, the drive motor 20c drives the first sector gear 251c to rotate clockwise until it meshes with the transmission gear 27c. The first sector gear 251c is driven to continue to rotate and drives the transmission gear 27c to rotate counterclockwise. The transmission gear 27c drives the transmission member 4 to rotate counterclockwise, as shown in FIG. Figure 11A As shown, the circuit breaker is opened, and the first sector gear 251 is driven to continue rotating until it is disengaged from the transmission gear 27c.

[0097] Preferably, the transmission gear set of this embodiment is the same as that of the third embodiment, except that the positional relationship and size of the gears are different, and the number of gears can also be adjusted.

[0098] like Figures 15A-15C FIG. 1 shows a fifth embodiment of the circuit breaker of the present invention.

[0099] The difference between this embodiment and the fourth embodiment is that the transmission member gear 27c and the transmission member 4 are coaxially arranged with an idle stroke between them.

[0100] When the circuit breaker is closed, the opening and closing drive gear rotates in the second direction and drives the transmission member gear 27c to rotate from the second initial position to the first direction until it is limited and engaged with the transmission member 4. The transmission member gear 27c drives the transmission member 4 to rotate in the first direction. The circuit breaker is closed and the opening and closing drive gear rotates in the first direction, driving the transmission member gear 27c to rotate back to the second initial position. When the circuit breaker is opened, the opening and closing drive gear rotates in the first direction and drives the transmission member gear 27c to rotate from the second initial position to the second direction until it is limited and engaged with the transmission member 4. The transmission member gear 27c drives the transmission member 4 to rotate in the second direction. The circuit breaker is opened and the opening and closing drive gear rotates in the second direction, driving the transmission member gear 27c to rotate back to the second initial position. Further, the opening and closing drive gear is a first sector gear 251c or a full gear.

[0101] Specifically, as described Figure 15A As shown, the circuit breaker is in the open state. When the circuit breaker is closed, the drive motor 20c drives the opening and closing drive gear to rotate counterclockwise, and the opening and closing drive gear drives the transmission member gear 27c to rotate clockwise from the second initial position to the limited position with the transmission member 4. The transmission member gear 27c continues to rotate and drives the transmission member 4 to rotate clockwise. Figure 15B As shown, the circuit breaker is closed. Figure 15C As shown, the opening and closing drive gear is driven to rotate clockwise and drives the transmission gear 27c to rotate counterclockwise to the second initial position. Figure 15C As shown, the circuit breaker is in the closed state. When the circuit breaker is opened, the driving motor 20c drives the opening and closing driving gear to rotate clockwise, and the opening and closing driving gear drives the transmission member gear 27c to rotate counterclockwise until it is limited to the transmission member 4. The transmission member gear 27c continues to rotate and drives the transmission member 4 to rotate counterclockwise, and the circuit breaker completes the opening. Figure 15A As shown, the opening and closing driving gear is driven to rotate counterclockwise and drives the transmission member gear 27c to rotate back to the second initial position.

[0102] In the circuit breaker of the present invention, an idle stroke is provided between the transmission gear 27c and the transmission member 4 (that is, the transmission gear 27c can only drive the transmission member 4 to rotate synchronously after being rotated to a certain angle. The angle rotated by the transmission gear 27c before the transmission member 4 starts to rotate is its idle stroke). Therefore, after the electric mechanism 2c drives the circuit breaker to complete the opening / closing operation through the operating mechanism, the transmission gear 27c rotates to the second initial position and does not interfere with the transmission member 4. On the one hand, the user can manually complete the circuit breaker opening / closing operation. On the other hand, when the circuit breaker fails due to a short circuit or overload, it can trip smoothly, thereby ensuring the protection performance of the circuit breaker.

[0103] like Figure 12A and 12B FIG. 1 shows a sixth embodiment of the circuit breaker of the present invention.

[0104] The difference between this embodiment and the fourth embodiment is that: the electric mechanism 2c further includes a fourth transmission gear 250c coaxially linked with the first sector gear 251c; the transmission member 4 is coaxially arranged with the transmission member gear 27c; the operating mechanism further includes a trip lever 3c drivingly connected to the lock catch 51 and pivotally arranged; when the circuit breaker is closed, the first sector gear 251c rotates from the third initial position to the second direction until it meshes with the transmission member gear 27c and drives the transmission member gear 27c to rotate from the second initial position to the first direction, the transmission member gear 27c drives the transmission member 4 to rotate in the first direction, the circuit breaker is closed and the first sector gear 251c rotates until it disengages from the transmission member gear 27c, and the transmission member gear 27c automatically rotates back to The second initial position and the transmission member 4 remain in the position when the circuit breaker is closed (that is, in the first direction, the transmission member gear 27c is coaxially linked with the transmission member 4, and in the second direction, the transmission member gear 27c can rotate in the second direction and return to the second initial position while the transmission member 4 remains stationary). When the circuit breaker is opened, the first sector gear 251c and the fourth transmission gear 250c continue to rotate in the second direction, the fourth transmission gear 250c drives the trip lever 3c to rotate, and the trip lever 3c drives the lock catch 51 to rotate in the second direction. The lock catch 51 and the trip catch 50 are released from the lock engagement, the circuit breaker is opened, and the first sector gear 251c continues to rotate to the third initial position in which it is close to but not yet engaged with the transmission member gear 27c. Furthermore, the electric mechanism 2c also includes a transmission member gear return spring for driving the transmission member gear 27c to return.

[0105] Specifically, such as Figure 12AAs shown, the circuit breaker is in the closed state, the transmission gear 27c is in the second initial position, the first sector gear 251c and the transmission gear 27c are disengaged, and when the circuit breaker is opened, the drive motor 20c drives the fourth transmission gear 250c and the first sector gear 251c to rotate counterclockwise synchronously. During the rotation of the fourth transmission gear 250c, the trip lever 3c drives the lock 51 to rotate counterclockwise, so that the lock 51 and the trip buckle 50 are released from the lock engagement, the circuit breaker is opened and the first sector gear 251c continues to rotate to the third initial position (with the first sector gear 251c). Figure 11A same as shown); reference Figure 11A As shown, when the circuit breaker is in the open state, the first sector gear 251c is in the third initial position, the transmission member gear 27c is in the second initial position, the first sector gear 251c and the transmission member gear 27c are not engaged, and when the circuit breaker is closed, the drive motor 20c drives the first sector gear 251c to rotate counterclockwise until it engages with the transmission member gear 27c and drives the transmission member gear 27c to rotate clockwise. The transmission member gear 27c is driven and drives the transmission member 4 to rotate clockwise. Figure 11B As shown, the circuit breaker is closed and the first sector gear 251c rotates to disengage from the transmission gear 27c, and then Figure 12A As shown, the transmission member gear 27c can be driven by the transmission member gear return spring to automatically rotate to the second initial position, while the transmission member 4 remains in the closing position.

[0106] Preferably, Figure 12B FIG. 1 shows an embodiment of the cooperation of the trip lever 3 c.

[0107] like Figure 12B As shown, the trip lever 3c is pivotally mounted in the circuit breaker housing 1, with its two ends respectively engaged with the fourth transmission gear 250c and the lock 51; the back of the lock 51 is provided with a lock drive boss 511 corresponding to one end of the trip lever 3c, and the back of the fourth drive gear 250c is provided with a fourth drive gear drive protrusion 250c corresponding to the other end of the trip lever 3c; Figure 12A As shown, when the circuit breaker is opened, the driving motor 20c drives the first sector gear 251C and the fourth transmission gear 250c to rotate counterclockwise ( Figure 12B The fourth transmission gear drives the protrusion 2500c to drive the trip lever 3c to rotate clockwise ( Figure 12B The trip lever 3c rotates and drives the lock 51 to rotate counterclockwise ( Figure 12B In the example, the tripping is triggered by clockwise rotation. Figure 12B As shown, the trip lever 3c is a V-shaped structure, wherein the middle portion is provided with a trip lever shaft hole. Of course, the trip lever 3c can also adopt other similar structures.

[0108] Preferably, the transmission gear set of this embodiment has the same structure as that of the fourth embodiment.

[0109] like Figure 1 、 9 -13A shows the seventh embodiment of the circuit breaker of the present invention.

[0110] The circuit breaker of the present invention further includes an arc extinguishing system 8, a short-circuit protection mechanism 7, an overload protection mechanism 9, an input terminal 1i, and an output terminal 1o, which are respectively driven and cooperated with the operating mechanism. The output terminal 1o and the button mechanism 2 are arranged at one end of the circuit breaker housing 1, and the input terminal 1i is arranged at the other end of the circuit breaker housing 1. The arc extinguishing system 8 and the short-circuit protection mechanism 7 are arranged side by side between the operating mechanism and the input terminal 1i. The electric mechanism 2 and the overload protection mechanism 9 are located on the same side of the operating mechanism and between the arc extinguishing system 8 and the output terminal 1o. Further, as Figure 1 As shown, the button mechanism 2 is arranged opposite to the short-circuit protection mechanism 7 and is located on one side of the circuit breaker housing 1; the outlet terminal 10 and the arc extinguishing system 8 are arranged opposite to each other and are located on the other side of the circuit breaker housing 1. Figure 1 Directions shown, such as Figure 1 Direction shown, Figure 1 The upper, lower, left and right sides of the circuit breaker are as follows: Figure 1 The side facing the reader is the front side of the circuit breaker; the outgoing terminal 1o and the button mechanism 2 are arranged side by side at the upper end of the circuit breaker housing 1, the outgoing terminal 1i is arranged at the lower end of the circuit breaker housing 1, the arc extinguishing system 8 and the short-circuit protection mechanism 7 are arranged side by side between the operating mechanism and the incoming terminal 1i, and the electric mechanism 2 and the overload protection mechanism 9 are both located on the left side of the operating mechanism and between the arc extinguishing system 8 and the outgoing terminal 1o.

[0111] Preferably, Figure 1 and 14 As shown, the circuit breaker further includes a control circuit board 1c connected to the electric mechanism 2c.

[0112] Preferably, Figure 1 As shown, the control circuit board 1c is arranged between the bottom plate of the circuit breaker housing 1 and the electric mechanism 2c, the control circuit board 1c and the electric mechanism 2c are located on the same side of the operating mechanism, and the control circuit board 1c is located between the outlet terminal 1o and the arc extinguishing system 8. Specifically, as Figure 1 Direction shown, Figure 1 The upper, lower, left and right sides of the circuit breaker are as follows: Figure 1The side facing the reader is the front side of the circuit breaker; the control circuit board 1c and the electric mechanism 2c are located on the left side of the button mechanism 2 of the operating mechanism. The control circuit board 1c is located on the front side of the bottom plate of the circuit breaker housing 1, and the electric mechanism 2c is located on the front side of the control circuit board 1c. The position of the control circuit board 1c basically coincides with the position of the electric mechanism 2c, and the space for the circuit board is relatively small.

[0113] Preferably, Figure 1 As shown, the circuit breaker further includes a signal terminal connected to the control circuit board 1c. The signal terminal and the incoming line terminal 1i are arranged at the same end of the circuit breaker housing 1 and the signal terminal is located between the two incoming line terminals 1i.

[0114] Preferably, Figure 13A As shown, the short-circuit protection mechanism 7 is an electromagnetic release.

[0115] Preferably, Figure 13A As shown, the overload protection mechanism 9 is a manganese copper resistor connected in series in the L-pole circuit of the circuit breaker. The manganese copper resistor is connected to the control circuit board 1c. The manganese copper resistor transmits a signal to the control circuit board 1c. If an overload fault occurs, the electric mechanism 2c drives the circuit breaker to open.

[0116] Preferably, the overload protection mechanism 9 is a current transformer coupled to the L-pole circuit of the circuit breaker and connected to the control circuit board 1c. The current transformer collects the current signal of the L-pole circuit and transmits it to the control circuit board 1c. When an overload fault occurs, the electric mechanism 2c drives the circuit breaker to open.

[0117] Preferably, the overload protection mechanism 9 is a bimetallic strip that cooperates with the tripping buckle 51. When an overload fault occurs, the bimetallic strip bends and drives the tripping buckle 51 to rotate, so that the lock buckle 50 and the tripping buckle 51 are released from the lock cooperation and the circuit breaker is opened.

[0118] Preferably, Figure 1 As shown, the circuit breaker housing 1 includes an incoming terminal hole 14 and a signal terminal hole 15 provided at one end thereof, and an outgoing terminal hole, a first button hole, and a second button hole provided at the other end of the circuit breaker housing 1; the incoming terminal, signal terminal, and outgoing terminal are respectively provided in the corresponding openings, one end of the first button 20 is slidably provided in the first button hole, and the other end is connected to the first connecting rod 30, and one end of the second button 21 is slidably provided in the second button hole, and the other end is connected to the second connecting rod 31.

[0119] Since the control circuit board 1c is not only connected to the electric mechanism 2c and the overload protection mechanism 9 (such as the manganese copper resistor or current transformer), but also needs to be connected to the incoming terminal 1i to take power and the signal terminal to transmit signals, if the control circuit board 1c is used Figure 1In the embodiment shown, when the control circuit board 1c is connected to the incoming terminal 1i and the signal terminal, the wiring is long and connected through soft wires, which will bring great difficulties to the wiring and welding during assembly. Whether it is manual assembly or automatic assembly, it is difficult to control the position of the wires.

[0120] Preferably, Figure 14 In the preferred embodiment of the control circuit board 1c shown, the bottom plate of the circuit breaker housing 1 is located on one side of the control circuit board 1c, and the electric mechanism 2c, operating mechanism, and arc extinguishing system 8 are located on the other side of the control circuit board. The control circuit board 1c at least extends beyond the short-circuit protection mechanism 7 and the arc extinguishing system 8 and is adjacent to the incoming terminal 1i and the signal terminal. Printed wires are arranged on the control circuit board 1c and extend beyond the arc extinguishing system 8 for connecting to the incoming terminal 1i and the signal terminal. Specifically, as shown in FIG. Figure 1 Direction shown, Figure 1 The top, bottom, left, and right sides of the circuit breaker are the top, bottom, left, and right sides of the circuit breaker. The bottom plate of the circuit breaker housing 1 is located on the left side of the control circuit board 1c, while the electric mechanism 2c, operating mechanism, and arc extinguishing system 8 are located on the right side of the control circuit board. Furthermore, the button mechanism 2 and short-circuit protection mechanism 7 are both directly mounted on the bottom plate of the circuit breaker housing 1. It should be noted that, depending on actual needs, the button mechanism 2 and short-circuit protection mechanism 7 can also be mounted on the other side of the control circuit board 1c, similar to the electric mechanism 2c, operating mechanism, and arc extinguishing system 8, to further expand the installation space of the control circuit board 1c.

[0121] The above is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention should not be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. A circuit breaker comprising a circuit breaker housing (1), a button mechanism (2) disposed within the circuit breaker housing (1), an operating mechanism connected to the button mechanism (2), a moving contact (60) connected to the operating mechanism, and a stationary contact (61) used in conjunction with the moving contact (60); characterized in that: Operating the button mechanism (2) can drive the circuit breaker to close / open via the operating mechanism; the circuit breaker further comprises an electric mechanism (2c) disposed within the circuit breaker housing (1), the electric mechanism (2c) being driven in conjunction with the operating mechanism, and the electric mechanism (2c) can drive the circuit breaker to close / open via the operating mechanism; The operating mechanism comprises a connecting rod mechanism and a transmission member (4) pivotally arranged on the circuit breaker housing (1), the connecting rod mechanism comprising a connecting rod structure (33); the button mechanism (2) is connected to the transmission member (4) through the connecting rod structure (33); when the button mechanism (2) is operated to close / open the circuit breaker, the button mechanism (2) drives the transmission member (4) to rotate in a first direction / a second direction through the connecting rod structure (33), and the second direction is opposite to the first direction; The electric mechanism (2c) cooperates with the transmission member (4) to drive the circuit breaker to close / open. The electric mechanism (2c) comprises a drive motor (20c), a transmission gear set, and a transmission member gear (27c) coaxially arranged with the transmission member (4). The transmission gear set comprises a closing / opening driving gear that cooperates with the transmission member gear (27c). The closing / opening driving gear drives the transmission member gear (27c) to rotate, and the transmission member gear (27c) drives the transmission member (4) to rotate, thereby closing / opening the circuit breaker. When the circuit breaker is closed, the opening and closing driving gear rotates in the second direction and drives the transmission member gear (27c) to rotate from the second initial position to the first direction until it is limited and matched with the transmission member (4), and the transmission member gear (27c) drives the transmission member (4) to rotate in the first direction. The circuit breaker is closed and the opening and closing driving gear rotates in the first direction to drive the transmission member gear (27c) to rotate back to the second initial position; when the circuit breaker is opened, the opening and closing driving gear rotates in the first direction and drives the transmission member gear (27c) to rotate from the second initial position to the second direction until it is limited and matched with the transmission member (4), and the transmission member gear (27c) drives the transmission member (4) to rotate in the second direction. The circuit breaker is opened and the opening and closing driving gear rotates in the second direction to drive the transmission member gear (27c) to rotate back to the second initial position.

2. The circuit breaker according to claim 1, wherein: The operating mechanism further includes a lever mechanism, and the connecting rod mechanism further includes a transmission connecting rod (32). The transmission member (4) is drive-connected to the lever mechanism via the transmission connecting rod (32), and the lever mechanism is drive-connected to the moving contact (60). The lever mechanism includes a tripping catch (50), a locking catch (51), and a rotating plate (52) pivotally arranged on the circuit breaker housing (1). The tripping catch (50) and the locking catch (51) are respectively pivotally arranged on the rotating plate (52). The tripping catch (50) and the locking catch (51) are locked together, and the rotating plate (52) is drive-connected to the moving contact (60).

3. The circuit breaker according to claim 1, wherein: The button mechanism (2) comprises a first button (20) slidably arranged in the circuit breaker housing (1); the connecting rod structure (33) comprises a first connecting rod (30); the first button (20) is connected to the transmission member (4) by driving via the first connecting rod (30); when the first button (20) is pressed toward the inside of the circuit breaker housing (1) to close the circuit breaker, the first button (20) drives the transmission member (4) to rotate in a first direction; when the first button (20) is pulled toward the outside of the circuit breaker housing (1) to open the circuit breaker, the first button (20) drives the transmission member (4) to rotate in a second direction; the electric mechanism (2c) cooperates with the first button (20) to drive the circuit breaker to close / open.

4. The circuit breaker according to claim 1, wherein: The button mechanism (2) further comprises a first button (20) and a second button (21) which are slidably arranged in the circuit breaker housing (1); the first button (20) and the second button (21) are arranged in parallel and the first button (20) and the second button (21) move synchronously in opposite directions; the connecting rod structure (33) comprises a first connecting rod (30) and a second connecting rod (31); the first button (20) is connected to the transmission member (4) by driving via the first connecting rod (30); the second button (21) is connected to the transmission member (4) by driving via the second connecting rod (31); the button mechanism (2) is connected to the circuit breaker housing (1) by driving towards the inside of the circuit breaker housing (1). When the first button (20) is pressed to close the circuit breaker, the first button (20) drives the transmission member (4) to rotate in a first direction, and the second button (21) moves toward the outside of the circuit breaker. When the second button (21) is pressed toward the inside of the circuit breaker housing (1) to open the circuit breaker, the second button (21) drives the transmission member (4) to rotate in a second direction via the second connecting rod (31), and the first button (20) moves toward the outside of the circuit breaker housing (1). The electric mechanism (2c) cooperates with the first button (20) or the second button (21) to close / open the circuit breaker.

5. A circuit breaker, comprising a circuit breaker housing (1), a button mechanism (2) arranged in the circuit breaker housing (1), an operating mechanism connected to the button mechanism (2), a moving contact (60) connected to the operating mechanism, and a stationary contact (61) used in conjunction with the moving contact (60); operating the button mechanism (2) can drive the circuit breaker to close / open via the operating mechanism; and characterized in that: The circuit breaker further comprises an electric mechanism (2c) arranged in the circuit breaker housing (1), the electric mechanism (2c) being driven in conjunction with the button mechanism (2), and the electric mechanism (2c) being capable of driving the operating mechanism to operate through the button mechanism (2), thereby driving the circuit breaker to close / open; the electric mechanism (2c) comprising a drive motor (20c), a transmission gear set, and a transmission rack (26c), the drive motor (20c) being driven in conjunction with the transmission rack (26) through the transmission gear set, and the transmission rack (26c) being driven in conjunction with the button mechanism (2); The button mechanism (2) comprises a first button (20) slidably arranged in the circuit breaker housing (1); The first button (20) includes a rack limiting groove (2030) provided on one side thereof, the transmission rack (26c) is provided in the rack limiting groove (2030), and the rack limiting groove (2030) includes a closing side surface (2032) and an opening side surface (2031) respectively provided at two ends thereof; When the circuit breaker is closed, the transmission rack (26c) moves from a first initial position toward the closing side (2032) until it contacts the closing side, the transmission rack (26c) continues to move and drives the first button (20) to move toward the inside of the circuit breaker housing (1) through the closing side (2032), and after the circuit breaker is closed, the transmission rack (26c) returns to the first initial position; when the circuit breaker is opened, the transmission rack (26c) moves toward the opening side (2031) until it contacts the opening side, the transmission rack (26c) continues to move and drives the first button (20) to move toward the outside of the circuit breaker housing (1) through the opening side (2031), and after the circuit breaker is opened, the transmission rack (26c) returns to the first initial position.

6. The circuit breaker according to claim 5, characterized in that: The circuit breaker housing (1) comprises a first button hole and a track groove (101) arranged thereon; one end of the first button (20) is slidably arranged in the first button hole; the first button (20) comprises a first button track platform (201) arranged at the other end thereof; the first button track platform (201) is slidably arranged in the track groove (101); the transmission rack (26c) comprises a rack track bar (261c) arranged on one side thereof; the rack track bar (261c) is slidably arranged in the track groove (101).

7. The circuit breaker according to claim 5, characterized in that: The circuit breaker housing (1) comprises a first button hole and a track groove (101) provided thereon; one end of the first button (20) is slidably provided in the first button hole; the first button (20) comprises a first button track platform (201) provided at the other end thereof; the first button track platform (201) is slidably provided in the track groove (101).

8. A circuit breaker, comprising a circuit breaker housing (1), a button mechanism (2) arranged in the circuit breaker housing (1), an operating mechanism connected to the button mechanism (2), a moving contact (60) connected to the operating mechanism, and a stationary contact (61) used in conjunction with the moving contact (60); operating the button mechanism (2) can drive the circuit breaker to close / open via the operating mechanism; and characterized in that: The circuit breaker further comprises an electric mechanism (2c) arranged in the circuit breaker housing (1), the electric mechanism (2c) drivingly cooperates with the operating mechanism, and the electric mechanism (2c) can drive the circuit breaker to close / open via the operating mechanism; the operating mechanism comprises a connecting rod mechanism and a transmission member (4) pivotally arranged on the circuit breaker housing (1), the connecting rod mechanism comprises a connecting rod structure (33); the button mechanism (2) is drivingly connected to the transmission member (4) via the connecting rod structure (33); when the button mechanism (2) is operated to close / open the circuit breaker, the button mechanism (2) drives the transmission member (4) to rotate in a first direction / a second direction via the connecting rod structure (33), the second direction being opposite to the first direction; the electric mechanism (2c) drivingly cooperates with the transmission member (4) to drive The circuit breaker is closed and cooperates with the lock catch (51) to drive the circuit breaker to trip and open. The electric mechanism (2c) includes a driving motor (20c), a transmission gear set, and a transmission member gear (27c) coaxially arranged with the transmission member (4). The transmission gear set includes a fourth transmission gear (250c) drivingly engaged with the transmission member gear (27c) and a first sector gear (251c) coaxially linked with the fourth transmission gear (250c). The operating mechanism also includes a trip lever (3c) drivingly connected to the lock catch (51) and pivotally arranged. The fourth transmission gear (250c) drives the trip lever (3c) to rotate, and the trip lever (3c) simultaneously drives the lock catch (51) to rotate so that the lock catch (51) and the trip catch (50) are released from the lock, and the circuit breaker is opened. When the circuit breaker is closed, the first sector gear (251c) rotates from the third initial position to the second direction until it meshes with the transmission gear (27c) and drives the transmission gear (27c) to rotate from the second initial position to the first direction, and the transmission gear (27c) drives the transmission member (4) to rotate in the first direction. The circuit breaker is closed and the first sector gear (251c) rotates until it disengages from the transmission gear (27c), and the transmission gear (27c) automatically returns to the second initial position and The transmission member (4) remains in the position when the circuit breaker is closed; when the circuit breaker is opened, the first sector gear (251c) and the fourth transmission gear (250c) continue to rotate in the second direction, the fourth transmission gear (250c) drives the trip lever (3c) to rotate, the trip lever (3c) drives the lock (51) to rotate in the second direction, the lock (51) and the trip buckle (50) release the lock engagement, the circuit breaker is opened, and the first sector gear (251c) continues to rotate to the third initial position.

9. The circuit breaker according to claim 4, characterized in that: The first button (20) comprises a first button operating portion (202), a first button transmission portion (203) and a second button track bar (205); one end of the first button operating portion (202) is a first button operating end, and the other end is connected to one end of the first button transmission portion (203) in a stacked manner; the other end of the first button transmission portion (203) is provided with a first button connection hole (204) and a first button track platform (201); the second button track bar (205) is arranged on one side of the first button transmission portion (203), and the second button track bar (205) and the first button operating portion (202) are located on the same side of the first button transmission portion (203); the first button connection hole (204) is connected to one end of the first connecting rod (30) of the operating mechanism; and the first button track platform (201) is slidably arranged in the track groove (101) of the circuit breaker housing (1); The second button (21) comprises a second button operating portion (212), a second button transmission portion (213), a second button track portion (215) and a second button connecting hole (214); one end of the second button operating portion (212) is a second button operating end, and the other end is connected to one end of the second button transmission portion (213); the other end of the second button transmission portion (213) is provided with a second button connecting hole (214); the second button track portion (215) is arranged on one side of the second button transmission portion (213); and the side of the second button track portion (215) facing the first button transmission portion (203) is provided with a second button track groove that slidably cooperates with the second button track bar (205).

10. The circuit breaker according to claim 5, wherein: The first button (20) further comprises a rack limiting groove (2030) arranged on the first button transmission part (203) of the first button (20), the rack limiting groove (2030) and the second button track bar (205) of the first button (20) being respectively located on both sides of the first button transmission part (203); the first button transmission part (203) further comprises a closing side wall (207) and an opening side wall (206) respectively arranged at both ends of the rack limiting groove (2030), the inner side surfaces of the closing side wall (207) and the opening side wall (206) being respectively the closing side surface (2032) and the opening side surface (2031), and the first button track platform (201) of the first button (20) being arranged at one end of the closing side wall (207).

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