Circuit breaker

Abstract

A circuit breaker, comprising a housing, and a manual mechanism, an electric mechanism, an operating mechanism, a movable contact and a stationary contact that are provided in the housing. The manual mechanism and the electric mechanism can each drive, by means of the operating mechanism, the movable contact to come into contact with and separate from the stationary contact. The electric mechanism comprises a trigger member that is rotatably arranged, and an electric motor that is configured to drive the trigger member to rotate, wherein a trip member is provided between the trigger member and the operating mechanism; the trigger member is provided with an opening drive portion; the electric motor can drive the trigger member to rotate; and the trip member is driven by means of the opening drive portion to trigger the operating mechanism to trip, such that the operating mechanism drives the movable contact to separate from the stationary contact. It is not necessary for the electric mechanism to drive the opening of the circuit breaker by means of the manual mechanism, thereby preventing the problem of the electric mechanism being unable to drive the opening of the circuit breaker by means of the manual mechanism when the manual mechanism is locked due to abnormal conditions.

Description

breaker

[0001] This application claims priority to Chinese Patent Application No. 202411766997.1, filed on December 4, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This invention relates to the field of low-voltage electrical appliances, and more specifically to a circuit breaker. Background Technology

[0003] If a circuit breaker button or handle is pressed and locked under abnormal circumstances, or is in the locked position, and a remotely transmitted automatic tripping signal is received, the tripping command cannot be executed because the button or handle is still locked, and the moving contact and stationary contact cannot separate. Only in the event of a line fault can the operating mechanism trip, causing the moving contact and stationary contact to separate. This phenomenon presents the problem of circuit breaker commands not being executed and poses a safety hazard to the line. Summary of the Invention

[0004] The purpose of this invention is to overcome at least one defect of the prior art and provide a circuit breaker.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A circuit breaker includes a housing and a manual mechanism, an electric mechanism, an operating mechanism, a moving contact, and a stationary contact disposed within the housing. The manual mechanism and the electric mechanism are respectively capable of driving the moving contact to contact and separate from the stationary contact via the operating mechanism. The electric mechanism includes a rotatably disposed trigger element and a motor for driving the trigger element to rotate. A tripping element is provided between the trigger element and the operating mechanism. The trigger element is provided with a tripping drive part. The motor is capable of driving the trigger element to rotate, and the tripping drive part drives the tripping element to trigger the operating mechanism to trip, causing the operating mechanism to drive the moving contact to separate from the stationary contact.

[0007] Preferably, the trigger further includes a closing drive unit, and the opening drive unit and the closing drive unit are offset along the rotation direction of the trigger. The trigger can rotate between a first position and a second position. When the trigger rotates from the first position to the second position, the closing drive unit pushes the manual mechanism or the operating mechanism, causing the operating mechanism to drive the moving contact to contact the stationary contact. When the trigger rotates from the second position to the first position, the opening drive unit drives the tripping component to trigger the operating mechanism to trip, causing the operating mechanism to drive the moving contact to separate from the stationary contact.

[0008] Preferably, the electric mechanism further includes a first micro switch, a second micro switch, a first closing circuit, a first opening circuit, a second closing circuit, and a second opening circuit. The trigger is used to trigger the first micro switch, and the operating mechanism is used to trigger the second micro switch. After electric closing or manual closing, the first opening circuit and / or the second opening circuit are connected to provide opening current to the motor. After electric opening or manual opening, the first closing circuit and / or the second closing circuit are connected to provide closing current to the motor.

[0009] Preferably, when the trigger is in the second position, the trigger presses the first micro switch, causing the first micro switch to conduct the first trip circuit and disconnect the first closing circuit. When the trigger is in the first position, the trigger can move away from the first micro switch, causing the first micro switch to disconnect the first trip circuit and conduct the first closing circuit.

[0010] Preferably, the operating mechanism includes a rotatably mounted contact support, the movable contact being mounted on the contact support, and the contact support being used to trigger a second micro switch.

[0011] Preferably, when the circuit is open, the contact support can press the second micro switch, causing the second micro switch to conduct the second closing circuit and disconnect the second opening circuit. When the circuit is closed, the contact support can move away from the second micro switch, causing the second micro switch to disconnect the second closing circuit and conduct the second opening circuit.

[0012] Preferably, the operating mechanism includes a locking element and a jumping element respectively rotatably mounted on the contact support. The contact support is connected to an energy storage spring. The moving contact is mounted on the contact support. The locking element and the jumping element are engaged in a latching engagement. The release element is used to push the locking element to release the latching engagement between the locking element and the jumping element, thereby disengaging the operating mechanism.

[0013] Preferably, the contact support includes a contact rotating part rotatably mounted on the housing and a jumper support part connected to the contact support. The jumper is rotatably disposed on the jumper support part. The jumper support part has a protruding second trigger part on the side away from the jumper, and the second trigger part is used to trigger the second micro switch.

[0014] Preferably, the trigger member is provided with a first trigger part, and the first trigger part and the tripping drive part are disposed on two opposite sides of the trigger member. The first trigger part is used to trigger the first micro switch.

[0015] Preferably, the housing contains a first circuit board and a second circuit board stacked together, the first circuit board and the second circuit board are electrically connected, the first circuit board is provided with a signal connector, and the first micro switch and the second micro switch are disposed on the second circuit board.

[0016] Preferably, the opening drive unit and the closing drive unit are arranged opposite to each other on both sides of the rotation axis of the trigger element.

[0017] Preferably, the tripping component includes a rotatable tripping rotating part, and a first tripping part and a second tripping part respectively connected to the tripping rotating part. The first tripping part and the second tripping part rotate about the axis of the tripping rotating part. The triggering element is used to push the first tripping part to drive the tripping component to rotate, so that the tripping component drives the second tripping part to trigger the operating mechanism to trip.

[0018] Preferably, the tripping component is connected to the tripping spring, which drives the first tripping part to rotate close to the trigger, so that the first tripping part is located on the rotation path of the tripping drive part, and the second tripping part is moved away from the operating mechanism.

[0019] Preferably, the trip spring is a torsion spring, which includes a cylindrical helical portion and spring rods respectively disposed at both ends of the helical portion. A fixed shaft is provided in the housing, and the helical portion and the tripping rotating portion are rotatably disposed on the fixed shaft. The two spring rods are respectively connected to the first tripping portion and the housing. A limiting structure for limiting the tripping component is provided in the housing. The trip spring is used to drive the first tripping portion to rotate close to the trigger until the tripping component contacts and is limited by the limiting structure. The trigger can push the tripping component to rotate against the action of the trip spring to trigger the operating mechanism to trip.

[0020] Preferably, the tripping component includes a sliding part that moves linearly, and a third tripping part and a fourth tripping part that are respectively disposed at both ends of the sliding part along the moving direction of the sliding part. The third tripping part is provided with a rack, and the triggering component is provided with a tripping drive tooth that meshes with the rack. The tripping drive tooth serves as a tripping drive part to push the rack, causing the third tripping part to drive the tripping component to move linearly, and the tripping component drives the fourth tripping part to trigger the operating mechanism to trip.

[0021] Preferably, the tripping component includes a guide portion disposed on the side of the sliding portion, the housing is provided with a guide groove for inserting the guide portion, the guide portion slides in the guide groove, and a tripping spring connected to the guide portion is provided in the guide groove. The tripping spring is used to drive the third tripping portion to be located on the rotation path of the tripping drive portion and to move the fourth tripping portion away from the operating mechanism.

[0022] Preferably, the fourth release part is provided with a guide surface and a stop block on both sides perpendicular to the moving direction of the sliding part. The guide surface is inclined to the moving direction of the sliding part and is used to push the operating mechanism to release. The housing is provided with a limiting block. The stop block contacts and limits the release block under the action of the release spring.

[0023] Preferably, a transmission part is provided between the locking member and the releasing member. The transmission part is disposed on the locking member, and the releasing member is used to push the transmission part disposed on the locking member to separate the locking member from the releasing member; or the transmission part is disposed on the releasing member, and the releasing member drives the transmission part to push the locking member to separate the locking member from the releasing member.

[0024] Preferably, the tripping rotating part has a cylindrical structure. The first tripping part and the second tripping part are disposed at both ends of the tripping rotating part along the axis of the tripping rotating part. The first tripping part and the tripping drive part are located on the same plane. The second tripping part is disposed on the side of the locking member. The second tripping part includes a first tripping section and a second tripping section disposed at an incline. The first tripping section is connected between the second tripping section and the tripping rotating part. A positioning groove is formed between the first tripping section and the second tripping section. The positioning groove is used to limit the movement with the transmission part. The second tripping section is used to push the transmission part disposed on the locking member, so that the locking member is separated from the tripping member.

[0025] Preferably, the locking member has a locking rotating part, and a locking short-circuit part, a locking overload part, and a locking locking part respectively connected to the locking rotating part. The locking locking part is used to lock and limit the movement of the jump fastener. The locking short-circuit part cooperates with a short-circuit release device, which can push the locking short-circuit part to separate the locking locking part from the jump fastener. The locking overload part cooperates with an overload release device, which can pull the locking overload part to separate the locking locking part from the jump fastener.

[0026] Preferably, the triggering element includes a trigger gear, a tripping rotating part, and a closing rotating part arranged coaxially. The tripping rotating part is provided with a radially protruding tripping boss, which serves as the tripping drive part for driving the tripping element to trigger the operating mechanism to trip. The closing rotating part is provided with a radially protruding closing drive tooth, which serves as the closing drive part for driving the manual mechanism or operating mechanism to achieve closing. The closing drive tooth is an incomplete gear.

[0027] Preferably, the trigger gear, the opening rotating part, and the closing rotating part are arranged sequentially along the axial direction, and the opening rotating part is disposed between the trigger gear and the closing rotating part.

[0028] Preferably, the two output terminals of the first micro switch are connected to the first closing circuit and the first opening circuit respectively. The motor can drive the first micro switch to switch between the two output terminals. When the circuit is opened electrically, the first micro switch is used to connect the first closing circuit and disconnect the first opening circuit at the same time. Or when the circuit is closed electrically, the first micro switch is used to disconnect the first closing circuit and connect the first opening circuit at the same time.

[0029] The two output terminals of the second micro switch are respectively connected to the second closing circuit and the second opening circuit. The operating mechanism can drive the second micro switch C to switch between the two output terminals. When the circuit is opened electrically or manually, the second micro switch C is used to connect the second closing circuit and disconnect the second opening circuit at the same time. The second closing circuit is used to provide closing current for the motor. Alternatively, when the circuit is closed electrically or manually, the second micro switch C is used to disconnect the second closing circuit and connect the second opening circuit at the same time. The second opening circuit is used to provide closing current for the motor.

[0030] Preferably, the manual mechanism includes a button and a rotatable handle. The button is connected to the handle. A first connecting rod is provided between the trip fastener and the handle. The two ends of the first connecting rod are rotatably connected to the trip fastener and the handle, respectively. A second connecting rod is provided between the handle and the button. The handle is provided with a closing driven part that cooperates with the closing drive part. The closing drive part drives the handle to rotate through the closing driven part. The handle supports the moving contact to contact the stationary contact to achieve closing.

[0031] In the circuit breaker of the present invention, the trigger of the electric mechanism triggers the tripping of the operating mechanism through the tripping component, so that the operating mechanism drives the circuit breaker to trip. This eliminates the need for the electric mechanism to drive the circuit breaker to trip through the manual mechanism, thus avoiding the problem that the electric mechanism cannot drive the circuit breaker to trip through the manual mechanism when the manual mechanism is locked due to abnormal conditions.

[0032] Furthermore, by connecting the first closing circuit controlled by electric power and the second closing circuit controlled by manual power in parallel to provide closing current to the motor, and connecting the first opening circuit controlled by electric power and the second opening circuit controlled by manual power in parallel to provide opening current to the motor, after electric or manual closing, the first opening circuit and / or the second opening circuit are turned on to provide opening current to the motor, and after electric or manual opening, the first closing circuit and / or the second closing circuit are turned on to provide closing current to the motor. There is no need to switch between electric and manual modes, thus realizing the constant presence of both electric and manual modes. Attached Figure Description

[0033] Figure 1 is a schematic diagram of the circuit breaker of the present invention;

[0034] Figure 2 is a schematic diagram of the cooperation between the electric mechanism and the operating mechanism of the present invention;

[0035] Figure 3 is a schematic diagram of the front structure of the trigger of the present invention;

[0036] Figure 4 is a schematic diagram of the back side of the trigger of the present invention;

[0037] Figure 5 is a structural schematic diagram of the first embodiment of the release element of the present invention;

[0038] Figure 6 is a structural schematic diagram of the locking component of the present invention;

[0039] Figure 7 shows the first position of the trigger element of the present invention;

[0040] Figure 8 shows the contact position between the tripping drive unit and the tripping component of the present invention;

[0041] Figure 9 shows the position where the tripping drive unit of the present invention triggers the tripping operation mechanism through the tripping component;

[0042] Figure 10 shows the second position of the trigger element of the present invention;

[0043] Figure 11 is a schematic diagram of the structure of the first circuit board, the second circuit board, the first micro switch, and the second micro switch of the present invention;

[0044] Figure 12 is a schematic diagram of the contact support structure of the present invention;

[0045] Figure 13 is a schematic diagram of the structure of the fixed shaft on the housing of the present invention;

[0046] Figure 14 is a schematic diagram of the control circuit of the present invention. At this time, the circuit breaker is in the open state, the first micro switch connects the first closing circuit, the second micro switch connects the second closing circuit, and the closing voltage signal is applied to the first micro switch and the first closing circuit.

[0047] Figure 15 is a schematic diagram of the control circuit of the present invention. At this time, the circuit breaker is in the closed state, the first micro switch connects the first tripping circuit, the second micro switch connects the second tripping circuit, and the tripping voltage signal is applied to both ends of the first micro switch and the first tripping circuit.

[0048] Figure 16 is a schematic diagram of the control circuit of the present invention. At this time, the circuit breaker has been switched to the open state by the manual operation component. The first micro switch connects the first open circuit, the second micro switch connects the second close circuit, and the close voltage signal is applied to the first micro switch and the first close circuit.

[0049] Figure 17 is a schematic diagram of the control circuit of the present invention. At this time, the circuit breaker has been switched to the closed state by the manual operation component. The first micro switch connects the first closing circuit, the second micro switch connects the second opening circuit, and the opening voltage signal is applied to the first micro switch and the first opening circuit.

[0050] Figure 18 shows a second embodiment of the tripping component of the present invention, and the position of the tripping component when the circuit is closed;

[0051] Figure 19 shows a second embodiment of the tripping component of the present invention, and the position of the tripping component when the circuit is open;

[0052] Figure 20 is a schematic diagram of the housing structure in the second embodiment of the release element of the present invention;

[0053] Figure 21 is a schematic diagram of the tripping drive unit in the second embodiment of the tripping component of the present invention;

[0054] Figure 22 is a structural schematic diagram of the second embodiment of the release element of the present invention;

[0055] In the diagram: 1 Housing; 43 Locking element; 2 Manual mechanism; 44 Tripping element; 3 Electric mechanism; 311 Tripping drive unit; 4 Operating mechanism; 312 Closing drive unit; 5 Moving contact; 313 Trigger gear; 6 Stationary contact; 314 Tripping rotating part; 7 Arc extinguishing mechanism; 315 Closing rotating part; 8 Wiring mechanism; 316 First trigger part; 9B First micro switch; 331 Tripping rotating part; 9C Second micro switch; 332 First tripping part; 11 Fixed shaft; 333 Second tripping part; 12 Overload trip unit; 334 Tripping spring; 13 Short circuit trip unit; 335 First tripping section; 14 First circuit board; 336 Second tripping section; 15 Second circuit board; 337 Sliding part; 16 Signal connector; 338 Third tripping part; 21 Button; 339 Fourth tripping part; 22 Slider; 411 Contact rotating part; 23 Handle; 412 Tripping support part; 24 First connecting rod; 414 Second trigger part; 25 Second link 431, latch rotating part 31, trigger element 432, latch short circuit part 32, motor 433, latch overload part 33, release element 434, latch locking part 34, first gear 435, pull rod 35, second gear 436, slide groove 36, third gear 437, transmission part 41, contact support 3371, guide part 3391, guide surface 3372, guide groove 3392, stop block 3381, rack 3393, limit block Detailed Implementation

[0056] The following embodiments, in conjunction with the accompanying drawings, further illustrate specific implementations of the circuit breaker of the present invention. The circuit breaker of the present invention is not limited to the descriptions in the following embodiments.

[0057] As shown in Figure 1, the circuit breaker in this embodiment includes a housing and, along the length of the housing 1, a manual mechanism 2, an electric mechanism 3, an operating mechanism 4, a moving contact 5, a stationary contact 6, an arc-extinguishing mechanism 7, and a wiring mechanism 8. The moving contact 5 and the stationary contact 6 are connected to the circuit via the wiring mechanism 8. The manual mechanism 2 can drive the operating mechanism 4 to operate, thereby causing the moving contact 5 to contact and separate from the stationary contact 6 to close and disconnect the connected circuit. The operating mechanism 4 is provided with an overload trip unit 12 on one side along the width of the housing 1, and the arc-extinguishing mechanism 7 is provided with a short-circuit trip unit 13 on one side along the width of the housing 1. The overload trip unit 12 can unlock the operating mechanism 4 when an overload current occurs, and the short-circuit trip unit 13 can also unlock the operating mechanism 4 when a short-circuit current occurs, so that the operating mechanism 4 can cause the moving contact 5 to separate from the stationary contact 6, thereby realizing the overload protection and short-circuit protection functions.

[0058] In this embodiment, the manual mechanism 2 includes a button 21, a slider 22, and a handle 23. The circuit breaker is a plug-in type. The manual mechanism 2 is located at one end of the housing's length direction, and the other end of the housing's length direction has a wiring structure 8. This wiring structure 8 is a plug-in connection for connecting to a power source. A wiring structure 8 can also be located at the end where the manual mechanism 2 is located for connecting a load. When the button 21 moves, it drives the handle 23 to rotate via the slider 22. The handle 23, through the operating mechanism 4, drives the moving contact 5 to contact and separate from the stationary contact 6, thereby achieving closing and opening. The button 21 and slider 22 are linearly sliding, while the handle 23 is rotatably mounted. The handle 23 is connected to the operating mechanism via a first connecting rod 24, the handle 23 and slider 22 are connected via a second connecting rod 25, and the slider 22 and button 21 are connected via a third connecting rod. Alternatively, in other embodiments, the manual mechanism 2 may not have a slider 22, and the manual mechanism 2 may include a button 21 and a handle 23, connected by the second connecting rod 25. The electric mechanism 3 includes a rotating trigger 31 and a motor 32 for driving the trigger 31 to rotate. In the prior art, the trigger 31 usually achieves automatic closing and opening by driving a button 21, a slider 22, or a handle 23. When the button 21 is pressed or the handle 23 is in the locked position, the opening command cannot be executed.

[0059] As shown in Figures 1-3 and 7-10, an improvement in this embodiment is that the electric mechanism 3 includes a rotatably mounted trigger 31 and a motor 32 for driving the trigger 31 to rotate. A tripping element 33 is provided between the trigger 31 and the operating mechanism 4. The trigger 31 is provided with a tripping drive part 311 and a closing drive part 312. The tripping drive part 311 and the closing drive part 312 are offset along the rotation direction of the trigger 31. The motor 32 can drive the trigger 31 to rotate, and the tripping element 33 is driven by the tripping drive part 311 to trigger the operating mechanism 4 to trip. The trigger 31 is rotatable between a first position and a second position. When the trigger 31 rotates from the first position to the second position, it pushes the manual mechanism 2 or the operating mechanism 4 through the closing drive unit 312, causing the operating mechanism 4 to drive the moving contact 5 to contact the stationary contact 6. When the trigger 31 rotates from the second position to the first position, it drives the tripping member 33 through the opening drive unit 311 to trigger the operating mechanism 4 to trip, causing the operating mechanism 4 to drive the moving contact 5 to separate from the stationary contact 6. In this embodiment, the closing drive unit 312 of the trigger 31 drives the operating mechanism to achieve closing by driving the handle member 23. In other embodiments, the closing drive unit 312 of the trigger 31 can also directly or indirectly drive the button 21 or the slider 22, or drive the operating mechanism 4 to achieve closing.

[0060] In this embodiment of the circuit breaker, the trigger 31 of the electric mechanism 3 triggers the tripping of the operating mechanism 4 through the tripping member 33, so that the operating mechanism 4 drives the circuit breaker to trip. The electric mechanism 3 does not need to drive the circuit breaker to trip through the manual mechanism 2. This avoids the problem that the electric mechanism 3 cannot drive the circuit breaker to trip through the manual mechanism 2 when the manual mechanism 2 is locked due to abnormal conditions. As shown in Figures 3-4, the trigger 31 in this embodiment includes a trigger gear 313, a tripping rotation part 314, and a closing rotation part 315 arranged coaxially. The trigger gear 313, tripping rotation part 314, and closing rotation part 315 are arranged sequentially along the axial direction. The tripping rotation part 314 is positioned between the trigger gear 313 and the closing rotation part 315. The motor 32 drives the tripping drive part 311 and the closing drive part 312 to rotate via the trigger gear 313. The tripping rotation part 314 has a radially protruding tripping boss, which serves as the tripping drive part 311 and is used to drive the tripping element 33 to trigger the operating mechanism 4 to trip. The closing rotation part 315 has radially protruding closing drive teeth, which serve as the closing drive part 312 and are used to drive the operating mechanism 4 to close. The closing drive teeth are incomplete gears. This arrangement ensures that the tripping drive part 311 and the closing drive part 312 are located on different planes, preventing accidental operation. Of course, as in other embodiments, the opening rotating part 314 and the closing rotating part 315 may also be provided on two opposite sides of the trigger gear 313.

[0061] As shown in Figures 1-2, the electric mechanism 3 of this embodiment includes a first gear 34, a second gear 35, and a third gear 36. The axes of the trigger gear 313, the first gear 34, the second gear 35, and the third gear 36 are arranged parallel to the output shaft of the motor 32. The first gear 34 is connected to the motor 32. The motor 32 drives the second gear 35 to rotate through the first gear 34. The second gear 35 drives the third gear 36 to rotate. The third gear 36 drives the trigger gear 313 to rotate.

[0062] Of course, the motor 32 can also drive the trigger 31 to rotate in other ways. For example, the output shaft of the motor 32 is set perpendicular to the axis of the trigger gear 313, the motor 32 drives the trigger 31 to rotate through the worm and gear, and one or more gears are set between the electric mechanism 3 and the trigger 31. All of these are within the protection scope of this invention.

[0063] As shown in Figure 2, the operating mechanism 4 includes a rotatably mounted contact support 41, and a locking member 43 and a jumping member 44 respectively rotatably mounted on the contact support 41. The contact support 41 is connected to an energy storage spring. The moving contact 5 is mounted on the contact support 41. A first connecting rod 24 is provided between the jumping member 44 and the handle member 23. The two ends of the first connecting rod 24 are rotatably connected to the jumping member 44 and the handle member 23 respectively. The locking member 43 and the jumping member 44 are engaged. The locking member 43 is released by pushing the locking member 43. The latching action of fastener 43 and jump fastener 44 can trigger the operating mechanism to disengage. The energy storage spring drives the contact support 41 to separate the moving contact 5 from the stationary contact 6. The handle 23 is provided with a closing driven part that cooperates with the closing drive part 312. Both the closing drive part 312 and the closing driven part are incomplete gears. The closing drive part 312 drives the handle 23 to rotate through the closing driven part, and then drives the contact support 41 to rotate through the handle 23, so that the contact support 41 drives the moving contact 5 to contact the stationary contact 6.

[0064] The operating mechanism works as follows: when the locking fastener 43 and the jump fastener 44 are engaged, the jump fastener 44 is locked to the contact support 41, preventing the jump fastener 44 from rotating relative to the contact support 41. The handle 23 drives the contact support 41 and the moving contact 5 to rotate and lock the energy storage spring through the first connecting rod 24 and the jump fastener. The release member 33 is used to push the locking fastener 43 to separate the locking fastener 43 from the jump fastener 44, releasing the engagement between the locking fastener 43 and the jump fastener 44 and causing the operating mechanism to release. After the operating mechanism is released, the handle 23 loses its locking effect on the contact support 41 and releases the energy storage spring. The energy storage spring drives the contact support 41 to separate the moving contact 5 from the stationary contact 6.

[0065] Figure 5 shows a first embodiment of the tripping member 33. In this embodiment, the tripping member 33 includes a rotatably configured tripping rotating part 331, and a first tripping part 332 and a second tripping part 333 respectively connected to the tripping rotating part 331. The first tripping part 332 and the second tripping part 333 rotate about the axis of the tripping rotating part 331. The trigger member 31 drives the first tripping part 332 to rotate the tripping member 33, so that the tripping member 33 drives the second tripping part 333 to trigger the operating mechanism 4 to trip. The tripping member 33 is connected to a tripping spring 334. The tripping spring 334 is used to drive the first tripping part 332 to rotate close to the trigger member 31, so that the first tripping part 332 is located on the rotation path of the tripping drive part 311, and the second tripping part 333 is moved away from the locking member 43 of the operating mechanism 4, so as to avoid the second tripping part 333 affecting the normal operation of the operating mechanism 4.

[0066] Furthermore, the trip spring 334 is a torsion spring, comprising a cylindrical helical portion and spring rods respectively disposed at both ends of the helical portion. A fixed shaft 11 is provided in the housing 1, and the helical portion and the tripping rotating portion 331 are rotatably mounted on the fixed shaft 11. The two spring rods are respectively connected to the first tripping portion 332 and the housing 1. A limiting structure (not shown in the diagram) for limiting the tripping member 33 is provided in the housing 1. The trip spring 334 drives the first tripping portion 332 to rotate close to the trigger member 31 until the tripping member 33 contacts and is limited by the limiting structure. The trigger member 31 can push the tripping member 33 to rotate against the action of the trip spring 334 to trigger the operating mechanism 4 to trip. After the trigger member 31 separates from the tripping member 33, the trip spring 334 drives the first tripping portion 332 to return to the rotation path of the tripping drive portion 311, facilitating the next electric tripping action. Of course, the trip spring 334 can also be a compression spring, tension spring, or leaf spring, or other elastic components.

[0067] Furthermore, the tripping rotating part 331 has a cylindrical structure. The first tripping part 332 and the second tripping part 333 are arranged at both ends of the tripping rotating part 331 along the axis of the tripping rotating part 331. The first tripping part 332 and the second tripping part 333 are located on different planes. The first tripping part 332 and the tripping drive part 311 are located on the same plane. The second tripping part 333 is arranged parallel to the side of the locking member 43. The second tripping part 333 includes an inclined first tripping section 335 and a second tripping section 336. The first tripping section 335 is connected between the second tripping section 336 and the tripping rotating part 331. A V-shaped positioning groove is formed between the first tripping section 335 and the second tripping section 336. The positioning groove can limit the tripping member 33 and the locking member 43 when the locking member 43 is pushed away from the tripping member 44.

[0068] Figures 18-20 show a second embodiment of the tripping member 33. The tripping member 33 includes a linearly movable sliding part 337, and a third tripping part 338 and a fourth tripping part 339 respectively disposed at both ends of the sliding part 337 along the moving direction of the sliding part 337. The housing has a sliding groove (not shown) for accommodating the tripping member 33. The tripping member 33 is slidably disposed in the sliding groove, and the third tripping part 338 and the fourth tripping part 339 at both ends extend to the outside of the sliding groove. The third tripping part 338 is provided with a rack 3381. The trigger member 31 is provided with a tripping drive tooth that meshes with the rack 3381. The tripping drive tooth, as a tripping drive part 311, pushes the rack 3381, causing the third tripping part 338 to drive the tripping member 33 to move linearly. The tripping member 33 drives the fourth tripping part 339 to trigger the operating mechanism 4 to trip. Preferably, the moving direction of the sliding part 337 is parallel to the length direction of the circuit breaker.

[0069] Furthermore, the tripping component 33 includes a guide portion 3371 disposed on the side of the sliding portion 337. The housing is provided with a guide groove 3372 for inserting the guide portion 3371. The guide portion 3371 and the guide groove 3372 are slidably engaged. A tripping spring 334 connected to the guide portion 3371 is disposed in the guide groove 3372. The tripping spring 334 is used to drive the third tripping part 338 to be located on the rotation path of the tripping drive part 311 and to move the fourth tripping part 339 away from the operating mechanism 4.

[0070] Furthermore, the fourth release part 339 is provided with a guide surface 3391 and a stop block 3392 on both sides perpendicular to the moving direction of the sliding part 337. The guide surface 3391 is inclined to the moving direction of the sliding part 337 and is used to push the operating mechanism to release. The housing is provided with a limiting block 3393. The stop block 3392 contacts and limits the stop block 3393 under the action of the release spring 334.

[0071] As shown in Figure 6, the locking member 43 in this embodiment has a locking rotating part 431, and a locking short-circuit part 432, a locking overload part 433, and a locking locking part 434 respectively connected to the locking rotating part 431. The locking locking part 434 is used to latch and limit the jump fastener 44, so that the jump fastener 44 cannot rotate relative to the contact support 41. The locking short-circuit part 432 cooperates with the short-circuit trip unit 13. When the short-circuit current meets the threshold, the short-circuit trip unit 13 pushes the locking short-circuit part 432 to separate the locking locking part 434 from the jump fastener 44 to trigger the operating mechanism 4 to trip.

[0072] The overload lock part 433 is provided with a sliding groove 436 that cooperates with the pull rod 435. The sliding groove 436 cooperates with the overload release device 12. When the overload current meets the threshold, the overload release device 12 pulls the overload lock part 433 through the pull rod 435, so that the lock locking part 434 separates from the jump fastener 44 to trigger the operation mechanism 4 to release.

[0073] Furthermore, a transmission part 437 is provided between the locking member 43 and the releasing member 33. The transmission part 437 is disposed on one of the locking member 43 and the releasing member 33. When the transmission part 437 is disposed on the locking member 43, the trigger member 31 is used to push the transmission part 437 disposed on the locking member 43 to separate the locking member 43 from the release member 44; or the transmission part 437 is disposed on the release member 33, and the release member 33 drives the transmission part 437 to push the locking member 43 to separate the locking member 43 from the release member 44.

[0074] In this embodiment, the transmission part 437 is integrally formed with the locking member 43. The transmission part 437 is disposed on the locking overload part 433 of the locking member 43. The positioning groove on the release member 33 is used to limit the transmission part 437. The second release section 336 is used to push the transmission part 437 disposed on the locking member 43, so that the locking overload part 433 drives the locking member 43 to separate from the release member 44. Of course, the transmission part 437 can also be integrally formed with the release member 33, both of which are within the protection scope of this invention.

[0075] As shown in Figures 11 and 14, the electric mechanism 3 in this embodiment also includes a first micro switch 9B, a second micro switch 9C, and a control circuit. The first micro switch 9B and the second micro switch 9C cooperate with the trigger 31 and the operating mechanism 4, respectively. The control circuit includes a first closing circuit, a first opening circuit, a second closing circuit, and a second opening circuit. The first closing circuit and the first opening circuit are connected in parallel, and the second closing circuit and the second opening circuit are connected in parallel. The first micro switch 9B is used to switch between the first closing circuit and the first opening circuit, and the second micro switch 9C is used to switch between the second closing circuit and the second opening circuit. When the first closing circuit and the second closing circuit are electrically closed, they are respectively used to supply power to the motor 32. When the first opening circuit and the second opening circuit are electrically opened, they are respectively used to supply power to the motor 32.

[0076] Specifically, the two output terminals of the first micro switch 9B are connected to the first closing circuit and the first opening circuit, respectively. When the motor 32 drives the operating mechanism to perform electric closing or electric opening operations, it indirectly drives the first micro switch 9B to switch between the two output terminals. When the circuit is opened electrically, the first micro switch 9B is used to connect the first closing circuit and disconnect the first opening circuit at the same time, or when the circuit is closed electrically, the first micro switch 9B is used to disconnect the first closing circuit and connect the first opening circuit at the same time.

[0077] The two output terminals of the second micro switch 9C are respectively connected to the second closing circuit and the second opening circuit. The operating mechanism 4 is used to drive the second micro switch 9C to switch between the two output terminals. When the circuit is opened electrically or manually, the second micro switch 9C is used to connect the second closing circuit and disconnect the second opening circuit. At this time, the motor 32 is not connected to the first closing circuit, but the second closing circuit can provide the motor 32 with the closing current to achieve electric closing. Alternatively, when the circuit is opened electrically or manually, the second micro switch 9C is used to disconnect the second closing circuit and connect the second opening circuit. At this time, the motor 32 is not connected to the first opening circuit, but the second opening circuit can provide the motor 32 with the opening current to achieve electric opening.

[0078] In this embodiment, the circuit breaker provides closing current to the motor 32 by connecting the first electrically controlled closing circuit and the second manually controlled closing circuit in parallel, and provides opening current to the motor 32 by connecting the first electrically controlled opening circuit and the second manually controlled opening circuit in parallel. After electrically or manually closing, the first opening circuit and / or the second opening circuit are connected to provide opening current to the motor 32, and after electrically or manually opening, the first closing circuit and / or the second closing circuit are connected to provide closing current to the motor 32. It does not require switching between the electric and manual modes, thus achieving the constant presence of both electric and manual modes.

[0079] It is understood that the electric mechanism 3 may not be equipped with the first micro switch 9B and the second micro switch 9C. Instead, it may be equipped with a switching micro switch and a switching button (not shown in the figure). The switching micro switch is used to switch the circuit breaker between manual and automatic operating modes. By controlling the operating state of the electric mechanism 3, the automatic operating mode of the circuit breaker can be enabled or disabled.

[0080] As shown in Figure 11, the housing 1 contains a stacked first circuit board 14 and a second circuit board 15. The first circuit board 14 and the second circuit board 15 are electrically connected. The first circuit board 14 is equipped with a signal connector 16. The first micro switch 9B and the second micro switch 9C are disposed on the second circuit board 15. The trigger 31 is used to trigger the first micro switch 9B, and the contact support 41 is used to trigger the second micro switch 9C. The two circuit boards facilitate adjustment of the position of the second circuit board 15 to coordinate with the trigger 31 and the contact support 41. Alternatively, only one circuit board can be used, i.e., the first circuit board 14 and the second circuit board 15 are integrally disposed.

[0081] Further, as shown in Figures 3-4, the trigger 31 is provided with a first trigger part 316. The first trigger part 316 and the tripping drive part 311 are disposed on two opposite sides of the trigger 31. The first trigger part 316 is used to trigger the first micro switch 9B to switch between the two output terminals. When the trigger 31 is in the second position, the first trigger part 316 is used to press the first micro switch 9B, so that the first micro switch 9B conducts the first tripping circuit to facilitate the next electric tripping operation. When the trigger 31 is in the first position, the first trigger part 316 is away from the first micro switch 9B, and the first micro switch 9B automatically conducts the first closing circuit to facilitate the next electric closing operation.

[0082] Furthermore, the tripping drive unit 311 and the closing drive unit 312 are positioned opposite each other on both sides of the rotation axis of the trigger member 31. The angle at which the trigger member 31 rotates from the first position to the second position can be the same as or different from the angle at which it rotates from the second position to the first position. Typically, one electric closing and tripping operation constitutes a cycle, during which the trigger member 31 rotates 360 degrees. During electric closing, the motor drives the trigger member 31 to rotate. The trigger member 31 remains stationary during manual tripping and manual closing. If the previous operation was electric closing, and the current operation is manual tripping followed by electric closing, the trigger member 31 needs to idle once before starting to close. When the manual mechanism 2 is abnormally locked, after the electric tripping causes the operating mechanism to disengage, the handle 23 has not yet reset. When an electric closing command is applied again, the trigger member 31 cannot achieve closing via the handle 23.

[0083] As shown in Figure 12, the contact support 41 of the operating mechanism 4 is used to trigger the second micro switch 9C to switch between two output terminals. Specifically, the contact support 41 includes a contact rotating part 411 rotatably mounted on the housing 1 and a tripping support part 412 connected to the contact support 41. The tripping member 44 is rotatably mounted on the tripping support part 412. The tripping support part 412 has a protruding second trigger part 414 on the side away from the tripping member 44. The second trigger part 414 is used to trigger the second micro switch 9C to switch between two output terminals. When the contact support 41 is open, the second trigger part 414 can press the second micro switch 9C, causing the second micro switch 9C to conduct the second closing circuit and disconnect the second opening circuit. When the contact support 41 is closed, the second trigger part 414 can move away from the second micro switch 9C, causing the second micro switch 9C to disconnect the second closing circuit and conduct the second opening circuit.

[0084] It is understood that the second micro switch 9C can also be triggered by other parts to switch between the two outputs. For example, the second micro switch 9C can be triggered by the locking member 43 and the handle member 23 to switch between the two outputs, which is within the scope of protection of this invention.

[0085] As shown in Figure 14, when the circuit breaker is in the open state, the first micro switch 9B connects the first closing circuit and the second micro switch 9C connects the second closing circuit, a closing voltage signal is applied to both ends of the first micro switch 9B and the first closing circuit during automatic closing. After the electric mechanism 3 drives the circuit breaker to close through the operating mechanism 4, as shown in Figure 15, the trigger 31 drives the first micro switch 9B to disconnect the first closing circuit and connect the first opening circuit. During closing, the manual mechanism 2 and the operating mechanism 4 move to the closing position accordingly. At the same time, the action of the manual mechanism 2 or the operating mechanism 4 during closing drives the second micro switch 9C to disconnect the second closing circuit and connect the second opening circuit.

[0086] As shown in Figure 15, when the circuit breaker is in the closed state, the first micro switch 9B connects the first tripping circuit and the second micro switch 9C connects the second tripping circuit, during automatic tripping, a tripping voltage signal is applied across the first micro switch 9B and the first tripping circuit. After the electric mechanism 3 drives the circuit breaker to trip through the operating mechanism 4, as shown in Figure 14, the trigger 31 drives the first micro switch 9B to disconnect the first tripping circuit and connect the first closing circuit. During tripping, the manual mechanism 2 and the operating mechanism 4 move to the tripping position accordingly. At the same time, the action of the manual mechanism 2 or the operating mechanism 4 during tripping drives the second micro switch 9C to disconnect the second tripping circuit and connect the second closing circuit.

[0087] When the circuit breaker is in the closed state, the first micro switch 9B connects the first tripping circuit and the second micro switch 9C connects the second tripping circuit. The circuit breaker is then tripped by the manual mechanism 2. The tripping action of the manual mechanism 2 or the operating mechanism 4 drives the second micro switch 9C to disconnect the second tripping circuit and connect the second closing circuit, entering the state shown in Figure 16. At this time, the circuit breaker is then electrically closed. A closing voltage signal is applied to both ends of the first micro switch 9B and the first tripping circuit. The motor 32 drives the trigger 31 to rotate. The trigger 31 drives the first micro switch 9B to disconnect the first tripping circuit and connect the first closing circuit, entering the state shown in Figure 14. Then, the electric mechanism 3 drives the circuit breaker to close through the operating mechanism 4. The trigger 31 drives the first micro switch 9B to disconnect the first closing circuit and connect the first tripping circuit. At the same time, the manual mechanism 2 or the operating mechanism 4 drives the second micro switch 9C to disconnect the second closing circuit and connect the second tripping circuit, entering the state shown in Figure 15.

[0088] When the circuit breaker is in the open state, the first micro switch 9B connects the first closing circuit and the second micro switch 9C connects the second closing circuit. After the circuit breaker is closed by the manual mechanism 2, the action of the manual mechanism 2 or the operating mechanism 4 when closing drives the second micro switch 9C to disconnect the second closing circuit and connect the second opening circuit, entering the state shown in Figure 17. At this time, electric opening is performed. A opening voltage signal is applied to both ends of the first micro switch 9B and the first closing circuit. The motor 32 drives the trigger 31 to rotate. The trigger 31 drives the first micro switch 9B to disconnect the first closing circuit and connect the first opening circuit, entering the state shown in Figure 15. Then, the electric mechanism 3 drives the circuit breaker to open through the operating mechanism 4. The trigger 31 drives the first micro switch 9B to disconnect the first opening circuit and connect the first closing circuit. At the same time, the manual mechanism 2 or the operating mechanism 4 drives the second micro switch 9C to disconnect the second opening circuit and connect the second closing circuit, entering the state shown in Figure 14.

[0089] The first micro switch 9B includes a common contact b3, a normally closed contact b0, and a normally open contact b1. The normally closed contact b0 and the normally open contact b1 are respectively connected in the first closing circuit and the first opening circuit, or the normally closed contact b0 and the normally open contact b1 are respectively connected in the first opening circuit and the first closing circuit. The second micro switch 9C includes a common contact c3, a normally closed contact c0, and a normally open contact c1. The normally closed contact c0 and the normally open contact c1 are respectively connected in the second closing circuit and the second opening circuit, or the normally closed contact c0 and the normally open contact c1 are respectively connected in the second opening circuit and the second closing circuit.

[0090] As shown in the specific embodiment of Figure 14-17, the normally closed contact c0 is connected to the second closing circuit, the normally open contact c1 is connected to the second opening circuit, and the common contact c3 is connected to the common contact b3. When the common contact c3 is connected to the normally closed contact c0, the second closing circuit is turned on; when the common contact c3 is connected to the normally open contact, the second opening circuit is turned on.

[0091] Preferably, as shown in Figures 14-17, the motor 32 is a DC motor. The first closing circuit includes a diode D3 and a power supply terminal E1. The normally closed contact b0 is connected to the anode of diode D3, the cathode of diode D3 is connected to the positive terminal of motor 32, and the negative terminal of motor 32 is connected to the power supply terminal E1. The first opening circuit includes a diode D1 and a power supply terminal E2. The normally open contact b1 is connected to the cathode of diode D1, the cathode of diode D1 is connected to the negative terminal of motor 32, and the positive terminal of motor 32 is connected to the power supply terminal E2. The second closing circuit includes a diode D6. The normally closed contact c0 is connected to the anode of diode D6, and the cathode of diode D6 is connected to the positive terminal. The second opening circuit includes a diode D5. The normally open contact c1 is connected to the cathode of diode D5, and the anode of diode D5 is connected to the negative terminal. The common contact b3 is connected to the common contact c3.

[0092] Specifically, as shown in Figure 14, when the circuit breaker is in the open state, the first micro switch 9B connects the first closing circuit and the second micro switch 9C connects the second closing circuit. The closing voltage signal power terminal E0 is connected to the positive terminal and the power terminal E1 is connected to the negative terminal. Current is applied across the first micro switch 9B and the first closing circuit. The current flows through the power terminal E0, common contact b3, normally closed contact b0, and diode D3 connected in sequence, and through the power terminal E0, common contact c3, and normally closed contact c0 connected in sequence, into the motor 32. The current flows out of the motor 32 through the diode D2 and power terminal E1 connected in sequence. When the circuit breaker completes closing, the first trigger 316 of the first trigger 316 presses against the first drive rod of the first micro switch 9B, causing the first micro switch 9B to disconnect the first closing circuit and connect the first opening circuit. At the same time, when the circuit breaker completes closing, the handle 23 drives the manual mechanism through the second connecting rod 25. The second trigger 414 of the contact support 41 presses against the second drive rod of the second micro switch 9C, causing the second micro switch 9C to disconnect the second closing circuit and connect the second opening circuit, entering the state shown in Figure 15.

[0093] As shown in Figure 15, when the circuit breaker is in the closed state, the first micro switch 9B connects the first opening circuit and the second micro switch 9C connects the second opening circuit. The opening voltage signal power terminal E0 is connected to the negative terminal and the power terminal E1 is connected to the positive terminal. Current is applied across the first micro switch 9B and the first closing circuit. The current flows into the motor 32 through the sequentially connected power terminal E1 and diode D4, and flows out of the motor 32 through the sequentially connected diode D1, normally open contact b1, common contact b3, and power terminal E0, and then through the sequentially connected diode D5, normally open contact c1, normally closed contact c3, and power terminal E0. The circuit breaker completes the tripping operation by rotating the trigger 31 from the second position to the first position. Simultaneously, the first trigger part 316 of the trigger 31 releases the first drive rod of the first micro switch 9B, causing the first micro switch 9B to disconnect the first tripping circuit and connect the first closing circuit. At the same time, when the circuit breaker completes the tripping operation, the handle 23 drives the manual mechanism through the second connecting rod 25. The second trigger part 414 of the contact support 41 releases the second drive rod of the second micro switch 9C, causing the second micro switch 9C to disconnect the second tripping circuit and connect the second closing circuit, entering the state shown in Figure 14.

[0094] Referring to Figure 15, when the circuit breaker is in the closed state, the first micro switch 9B connects the first tripping circuit and the second micro switch 9C connects the second tripping circuit. After the circuit breaker is tripped by the manual mechanism 2, the second micro switch 9C disconnects the second tripping circuit and connects the second closing circuit, entering the state shown in Figure 16. The closing voltage signal power terminal E0 is connected to the positive terminal and the power terminal E1 is connected to the negative terminal. The current is applied to the first micro switch 9B and the first closing circuit. The current flows into the motor 32 through the power terminal E0, common contact c3, normally closed contact c0, and diode D6 connected in sequence, and flows out of the motor 32 through the diode D2 and power terminal E1 connected in sequence. The motor 32 rotates forward and drives the trigger 31 to rotate from the second position. When the circuit breaker reaches the first position, the first triggering part 316 of the first triggering part 316 releases the first driving rod of the first micro switch 9B, causing the first micro switch 9B to disconnect the first opening circuit and connect the first closing circuit, entering the state shown in Figure 14; the motor 32 continues to rotate forward, and the triggering part 31 rotates from the first position to the second position. After the circuit breaker is closed, the first triggering part 316 of the triggering part 31 drives the first micro switch 9B to disconnect the first closing circuit and connect the first opening circuit; at the same time, when the circuit breaker is closed, the handle 23 drives the manual mechanism through the second connecting rod 25, and the manual mechanism drives the second micro switch 9C to disconnect the second closing circuit and connect the second opening circuit, entering the state shown in Figure 15.

[0095] [Corrected according to Rule 91 08.05.2025] Referring to Figure 14, when the circuit breaker is in the open state, the first micro switch 9B connects the first closing circuit and the second micro switch 9C connects the second closing circuit. After the circuit breaker is closed by the manual mechanism 2, the second micro switch 9C disconnects the second closing circuit and connects the second opening circuit, entering the state shown in Figure 17. The opening voltage signal power terminal E0 is connected to the negative terminal, and the power terminal E1 is connected to the positive terminal. Current is applied to the first micro switch 9B and the first closing circuit. The current flows into the motor 32 through the power terminal E1 and diode D4 connected in sequence, and flows out of the motor 32 through the diode D5, normally open contact c1, common contact c3, and power terminal E1 connected in sequence. The motor 32 rotates forward and drives the trigger 31 from the first When the circuit breaker is rotated to the second position, the first trigger part 316 of the first trigger member 31 releases the first drive rod of the first micro switch 9B, causing the first micro switch 9B to disconnect the first closing circuit and connect the first opening circuit, entering the state shown in Figure 15; the motor 32 continues to rotate forward, and the trigger member 31 rotates from the second position to the first position. After the circuit breaker is opened, the first trigger part 316 of the trigger member 31 drives the first micro switch 9B to disconnect the first opening circuit and connect the first closing circuit; at the same time, when the circuit breaker is opened, the handle member 23 drives the manual mechanism to operate through the second connecting rod 25, and the second trigger part 414 of the contact support 41 drives the second micro switch 9C to disconnect the second opening circuit and connect the second closing circuit, entering the state shown in Figure 14.

[0096] It should be noted that in the description of this invention, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship conventionally placed during use. They are used only for ease of description and do not indicate that the device or element referred to must have a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating relative importance.

[0097] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A circuit breaker, comprising a housing (1) and a manual mechanism (2), an electric mechanism (3), an operating mechanism (4), a moving contact (5), and a stationary contact (6) disposed in the housing (1), wherein the manual mechanism (2) and the electric mechanism (3) are respectively capable of driving the moving contact (5) to contact and separate from the stationary contact (6) through the operating mechanism (4), characterized in that: The electric mechanism (3) includes a rotatable trigger (31) and a motor (32) for driving the trigger (31) to rotate. A tripping element (33) is provided between the trigger (31) and the operating mechanism (4). The trigger (31) is provided with a tripping drive (311). The motor (32) can drive the trigger (31) to rotate. The tripping element (33) is driven by the tripping drive (311) to trigger the operating mechanism (4) to trip, so that the operating mechanism (4) drives the moving contact (5) to separate from the stationary contact (6).

2. The circuit breaker according to claim 1, characterized in that: The trigger (31) is also provided with a closing drive unit (312). The opening drive unit (311) and the closing drive unit (312) are offset along the rotation direction of the trigger (31). The trigger (31) can rotate between a first position and a second position. When the trigger (31) rotates from the first position to the second position, the closing drive unit (312) pushes the manual mechanism (2) or the operating mechanism (4) so ​​that the operating mechanism (4) drives the moving contact (5) to contact the stationary contact (6). When the trigger (31) rotates from the second position to the first position, the opening drive unit (311) drives the tripping unit (33) to trigger the operating mechanism (4) to trip, so that the operating mechanism (4) drives the moving contact (5) to separate from the stationary contact (6).

3. The circuit breaker according to claim 2, characterized in that: The electric mechanism (3) further includes a first micro switch (9B), a second micro switch (9C), a first closing circuit, a first opening circuit, a second closing circuit, and a second opening circuit. The trigger (31) is used to trigger the first micro switch (9B), and the operating mechanism (4) is used to trigger the second micro switch (9C). After electric closing or manual closing, the first opening circuit and / or the second opening circuit are connected to provide opening current to the motor (32). After electric opening or manual opening, the first closing circuit and / or the second closing circuit are connected to provide closing current to the motor (32).

4. The circuit breaker according to claim 3, characterized in that: When the trigger (31) is in the second position, the trigger (31) presses the first micro switch (9B), causing the first micro switch (9B) to conduct the first trip circuit and disconnect the first closing circuit. When the trigger (31) is in the first position, the trigger (31) can move away from the first micro switch (9B), causing the first micro switch (9B) to disconnect the first trip circuit and conduct the first closing circuit.

5. The circuit breaker according to claim 3, characterized in that: The operating mechanism (4) includes a rotatably mounted contact support (41), and a movable contact (5) is mounted on the contact support (41). The contact support (41) is used to trigger the second micro switch (9C). When the circuit is open, the contact support (41) can press the second micro switch (9C) so that the second micro switch (9C) can conduct the second closing circuit and disconnect the second opening circuit. When the circuit is closed, the contact support (41) can move away from the second micro switch (9C) so that the second micro switch (9C) can disconnect the second closing circuit and conduct the second opening circuit.

6. The circuit breaker according to claim 5, characterized in that: The operating mechanism (4) includes a locking element (43) and a jumping element (44) respectively rotatably mounted on the contact support (41). The contact support (41) is connected to the energy storage spring. The moving contact (5) is mounted on the contact support (41). The locking element (43) and the jumping element (44) are engaged in a latching engagement. The release element (33) is used to push the locking element (43) to release the latching engagement of the locking element (43) and the jumping element (44) and disengage the operating mechanism.

7. The circuit breaker according to claim 3, characterized in that: The trigger (31) is provided with a first trigger part (316), and the first trigger part (316) and the tripping drive part (311) are disposed on two opposite sides of the trigger (31). The first trigger part (316) is used to trigger the first micro switch (9B). The tripping drive unit (311) and the closing drive unit (312) are arranged opposite to each other on both sides of the rotation axis of the trigger (31).

8. The circuit breaker according to claim 6, characterized in that: The tripping member (33) includes a rotatably disposed tripping rotating part (331), and a first tripping part (332) and a second tripping part (333) respectively connected to the tripping rotating part (331). The first tripping part (332) and the second tripping part (333) rotate about the axis of the tripping rotating part (331). The trigger member (31) is used to push the first tripping part (332) to drive the tripping member (33) to rotate, so that the tripping member (33) drives the second tripping part (333) to trigger the operating mechanism (4) to trip. The tripping member (33) is connected to the tripping spring (334), which is used to drive the first tripping part (332) to rotate close to the trigger (31), so that the first tripping part (332) is located on the rotation path of the tripping drive part (311), and the second tripping part (333) is moved away from the operating mechanism (4).

9. The circuit breaker according to claim 1, characterized in that: The tripping member (33) includes a sliding part (337) that moves linearly, and a third tripping part (338) and a fourth tripping part (339) respectively disposed at both ends of the sliding part (337) along the moving direction of the sliding part (337). The third tripping part (338) is provided with a rack (3381). The trigger member (31) is provided with a tripping drive tooth that meshes with the rack (3381). The tripping drive tooth serves as a tripping drive part (311) to push the rack (3381), so that the third tripping part (338) drives the tripping member (33) to move linearly. The tripping member (33) drives the fourth tripping part (339) to trigger the operating mechanism (4) to trip.

10. The circuit breaker according to claim 9, characterized in that: The tripping component (33) includes a guide portion (3371) disposed on the side of the sliding portion (337). The housing is provided with a guide groove (3372) for inserting the guide portion (3371). The guide portion (3371) and the guide groove (3372) are slidably engaged. The guide groove (3372) is provided with a tripping spring (334) connected to the guide portion (3371). The tripping spring (334) is used to drive the third tripping portion (338) to be located on the rotation path of the tripping drive portion (311) and to move the fourth tripping portion (339) away from the operating mechanism (4).

11. The circuit breaker according to claim 10, characterized in that: The fourth release part (339) is provided with a guide surface (3391) and a stop block (3392) on both sides perpendicular to the moving direction of the sliding part (337). The guide surface (3391) is inclined to the moving direction of the sliding part (337) and is used to push the operating mechanism (4) to release. The housing is provided with a limiting block (3393). The stop block (3392) contacts the limiting block (3393) and limits it under the action of the release spring (334).

12. The circuit breaker according to claim 8, characterized in that: A transmission part (437) is provided between the locking member (43) and the release member (33). The transmission part (437) is provided on the locking member (43). The release member (33) is used to push the transmission part (437) provided on the locking member (43) to separate the locking member (43) from the release member (44); or the transmission part (437) is provided on the release member (33). The release member (33) drives the transmission part (437) to push the locking member (43) to separate the locking member (43) from the release member (44).

13. The circuit breaker according to claim 12, characterized in that: The tripping rotating part (331) has a cylindrical structure. The first tripping part (332) and the second tripping part (333) are arranged at both ends of the tripping rotating part (331) along the axis of the tripping rotating part (331). The first tripping part (332) and the tripping drive part (311) are located on the same plane. The second tripping part (333) is arranged on the side of the locking member (43). The second tripping part (333) includes an inclined first tripping section (33). 5) The second tripping section (336) is connected between the second tripping section (335) and the tripping rotating part (331). A positioning groove is formed between the first tripping section (335) and the second tripping section (336). The positioning groove is used to limit the movement with the transmission part (437). The second tripping section (336) is used to push the transmission part (437) provided on the locking member (43) to separate the locking member (43) from the jumping member (44).

14. The circuit breaker according to claim 3, characterized in that: The trigger (31) includes a trigger gear (313), a tripping rotation part (314), and a closing rotation part (315) arranged coaxially. The tripping rotation part (314) is provided with a tripping boss that protrudes radially. The tripping boss serves as the tripping drive part (311) and is used to drive the tripping part (33) to trigger the operating mechanism (4) to trip. The closing rotation part (315) is provided with a closing drive tooth that protrudes radially. The closing drive tooth serves as the closing drive part (312) and is used to drive the manual mechanism (2) or the operating mechanism (4) to achieve closing. The closing drive tooth is an incomplete gear. The trigger gear (313), the tripping rotation part (314), and the closing rotation part (315) are arranged sequentially along the axial direction. The tripping rotation part (314) is located between the trigger gear (313) and the closing rotation part (315).

15. The circuit breaker according to claim 3, characterized in that: The two output terminals of the first micro switch (9B) are respectively connected to the first closing circuit and the first opening circuit. The motor (32) can drive the first micro switch (9B) to switch between the two output terminals. When the circuit is opened electrically, the first micro switch (9B) is used to connect the first closing circuit and disconnect the first opening circuit at the same time. Or when the circuit is closed electrically, the first micro switch (9B) is used to disconnect the first closing circuit and connect the first opening circuit at the same time. The two output terminals of the second micro switch (9C) are respectively connected to the second closing circuit and the second opening circuit. The operating mechanism (4) can drive the second micro switch (9C) to switch between the two output terminals. When the circuit is opened electrically and manually, the second micro switch (9C) is used to connect the second closing circuit and disconnect the second opening circuit at the same time. The second closing circuit is used to provide closing current for the motor (32). Alternatively, when the circuit is closed electrically and manually, the second micro switch (9C) is used to disconnect the second closing circuit and connect the second opening circuit at the same time. The second opening circuit is used to provide closing current for the motor (32).

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