Circuit breaker

Abstract

The present invention relates to the field of low-voltage electrical appliances, and particularly to a circuit breaker. The gear set of the electric mechanism of the circuit breaker includes a trigger gear. The switching device of the circuit breaker includes a first switching member, and its output terminals are respectively connected to the closing circuit and the opening circuit of the circuit breaker. The motor of the electric mechanism is respectively connected in series in the closing circuit and the opening circuit. When the circuit breaker is in the open state, the first switching member closes the closing circuit and disconnects the opening circuit at the same time, a closing voltage signal is applied across the closing circuit. After the electric mechanism drives the circuit breaker to close, the trigger gear drives the first switching member to disconnect the closing circuit and connect the opening circuit. When the circuit breaker is in the closed state, the first switching member closes the opening circuit and disconnects the closing circuit at the same time, an opening voltage signal is applied across the opening circuit. After the electric mechanism drives the circuit breaker to open, the trigger gear drives the first switching member to disconnect the opening circuit and connect the closing circuit. The circuit breaker of the present invention has simple control and reliable operation performance.

Description

Technical Field

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

[0002] Existing plug-in circuit breakers mostly have the following problems:

[0003] First, the electric mechanism of the existing circuit breaker realizes automatic closing by driving the handle mechanism, and realizes automatic tripping by driving the handle mechanism or the latch of the driving operating mechanism. The corresponding matching mechanisms are prone to wear, and in order to achieve non-interference between automatic closing and tripping and manual closing and tripping, the structure is relatively complex. Moreover, for the electric mechanism of the existing circuit breaker, its motor control is processed through a position sensor and a chip. The position sensor transmits the closing and tripping positions of the circuit breaker to the chip, and the chip controls the forward or reverse rotation of the motor to achieve closing, tripping and returning to the initial position (that is, not affecting the manual closing and tripping positions of the circuit breaker). The chip is easily interfered by the outside, resulting in unreliable position detection and affecting the action reliability of the circuit breaker.

[0004] Second, for the existing circuit breaker, its electric mechanism relies on hard gear transmission. After long-term use, structural parts are prone to wear, often resulting in the situation that the transmission is not in place, manifested as the circuit breaker not closing or tripping in place.

[0005] Third, for the existing circuit breaker, when switching between the manual working mode and the automatic working mode, the operation is not convenient, and the working reliability of the manual-automatic switching device is not high.

[0006] Fourth, for the existing circuit breaker, its overall space size specification is too large, which does not meet the development trend and requirements of the miniaturization of the circuit breaker.

[0007] Fifth, for the existing circuit breaker, the control of the motor of its electric mechanism often requires a complex physical structure and circuit to achieve, resulting in a complex overall structure of the circuit breaker and poor reliability. Summary of the Invention

[0008] The purpose of the present invention is to overcome the defects of the prior art and provide a circuit breaker with simple control and reliable action performance.

[0009] To achieve the above purpose, the present invention adopts the following technical solutions:

[0010] A circuit breaker, which includes an operating mechanism 5 and an electric mechanism 3 for realizing automatic closing and tripping; the electric mechanism 3 includes a motor 301 and a gear set, the gear set is drivingly connected to the motor 301, and the gear set includes a trigger gear; the circuit breaker further includes a switching device, a closing circuit, and a tripping circuit; the switching device includes a first switching member 9B that is drivingly engaged with the trigger gear, and the output ends of the first switching member 9B are respectively connected to the closing circuit and the tripping circuit, and the motor 301 is respectively connected in series in the closing circuit and the tripping circuit;

[0011] When the circuit breaker is in the tripping state, the first switching member 9B closes the closing circuit and disconnects the tripping circuit at the same time, a closing voltage signal is applied across the closing circuit, after the electric mechanism 3 drives the circuit breaker to close, the trigger gear drives the first switching member 9B to disconnect the closing circuit and connect the tripping circuit;

[0012] When the circuit breaker is in the closing state, the first switching member 9B closes the tripping circuit and disconnects the closing circuit at the same time, a tripping voltage signal is applied across the tripping circuit, after the electric mechanism 3 drives the circuit breaker to trip, the trigger gear drives the first switching member 9B to disconnect the tripping circuit and connect the closing circuit.

[0013] Preferably, the first switching member 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 closing circuit and the tripping circuit, or the normally closed contact b0 and the normally open contact b1 are respectively connected in the tripping circuit and the closing circuit.

[0014] Preferably, the motor 301 is a DC motor, the closing circuit includes a diode D3 and a diode D2, the normally closed contact b0 is connected to the anode of the diode D3, the cathode of the diode D3 is connected to the positive terminal of the motor 301, the negative terminal of the motor 301 is connected to the anode of the diode D2; the tripping circuit includes a diode D1 and a diode D4, the normally open contact b1 is connected to the cathode of the diode D1, the anode of the diode D1 is connected to the negative terminal, the positive terminal is connected to the cathode of the diode D4; the common contact b3 is connected to the power supply terminal E0, and the cathodes of the diode D2 and the anode of the diode D4 are both connected to the power supply terminal E1.

[0015] Preferably, the motor 301 is a DC motor, the closing circuit includes a power supply terminal E1, the normally closed contact b0 is connected to the positive terminal of the motor 301, the negative terminal of the motor 301 is connected to the power supply terminal E1; the tripping circuit includes a power supply terminal E2, the normally open contact b1 is connected to the negative terminal of the motor 301, the positive terminal of the motor 301 is connected to the power supply terminal E2; the common contact b0 is connected to the power supply terminal E0.

[0016] Preferably, the circuit breaker further includes a manual operation component, a closing auxiliary circuit, and a tripping auxiliary circuit. The manual operation component drives the circuit breaker to close / trip through the operating mechanism 5. The switching device further includes a second switching member 9C that is drivingly engaged with the manual operation component or the operating mechanism 5. The output ends of the second switching member 9C are respectively connected to the closing auxiliary circuit and the tripping auxiliary circuit. The manual operation component is drivingly connected to the operating mechanism 5. The closing auxiliary circuit and the tripping auxiliary circuit are respectively connected to the two input ends of the motor 301. The input end of the second switching member 9C is connected to the input end of the first switching member 9B.

[0017] When the circuit breaker is in the tripping state, the first switching member 9B closes the closing circuit and the second switching member 9C closes the closing auxiliary circuit, a power supply is applied across the first switching member 9B and the closing circuit. After the electric mechanism 3 drives the circuit breaker to close, the trigger gear drives the first switching member 9B to disconnect the closing circuit and connect the tripping circuit. At the same time, the action of the manual operation component or the operating mechanism 5 during closing drives the second switching member 9C to disconnect the closing auxiliary circuit and connect the tripping auxiliary circuit.

[0018] When the circuit breaker is in the closed state, the first switching member 9B closes the tripping circuit and the second switching member 9C closes the tripping auxiliary circuit, a tripping voltage signal is applied across the first switching member 9B and the tripping circuit. After the electric mechanism 3 drives the circuit breaker to trip, the trigger gear drives the first switching member 9B to disconnect the tripping circuit and connect the closing circuit. At the same time, the action of the manual operation component or the operating mechanism 5 during tripping drives the second switching member 9C to disconnect the tripping auxiliary circuit and connect the closing auxiliary circuit.

[0019] When the circuit breaker is in the closed state, the first switching member 9B closes the tripping circuit, the second switching member 9C closes the tripping auxiliary circuit. After the circuit breaker is tripped by driving the manual operation component, the action of the manual operation component or the operating mechanism 5 during tripping drives the second switching member 9C to disconnect the tripping auxiliary circuit and connect the closing auxiliary circuit. A closing voltage signal is applied across the first switching member 9B and the tripping circuit, the motor 301 drives the trigger gear to rotate, the trigger gear drives the first switching member 9B to disconnect the tripping circuit and connect the closing circuit, then the electric mechanism 3 drives the circuit breaker to close, the trigger gear drives the first switching member 9B to disconnect the closing circuit and connect the tripping circuit, and at the same time, the manual operation component or the operating mechanism 5 drives the second switching member 9C to disconnect the closing auxiliary circuit and connect the tripping auxiliary circuit.

[0020] When the circuit breaker is in the open state, the first switch 9B closes the closing circuit, and the second switch 9C closes the closing auxiliary circuit. After the circuit breaker is closed by driving with the manual operation component, the action of the manual operation component or the operating mechanism 5 during closing drives the second switch 9C to disconnect the closing auxiliary circuit and connect the opening auxiliary circuit; a tripping voltage signal is applied across the first switch 9B and the closing circuit, the motor 301 drives the trigger gear to rotate, the trigger gear drives the first switch 9B to disconnect the closing circuit and connect the opening circuit, then the electric mechanism 3 drives the circuit breaker to trip, the trigger gear drives the first switch 9B to disconnect the opening circuit and connect the closing circuit, and at the same time the manual operation component or the operating mechanism 5 drives the second switch 9C to disconnect the opening auxiliary circuit and connect the closing auxiliary circuit.

[0021] Preferably, the first 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 to the closing circuit and the opening circuit, or the normally closed contact b0 and the normally open contact b1 are respectively connected to the opening circuit and the closing circuit;

[0022] The second 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 to the closing auxiliary circuit and the opening auxiliary circuit, or the normally closed contact c0 and the normally open contact c1 are respectively connected to the opening auxiliary circuit and the closing auxiliary circuit.

[0023] Preferably, the closing circuit includes a diode D3 and a diode D2. The normally closed contact b0 is connected to the anode of the diode D3, the cathode of the diode D3 is connected to the positive terminal of the motor 301, the negative terminal of the motor 301 is connected to the anode of the diode D2; the opening circuit includes a diode D1 and a diode D4. The normally open contact b1 is connected to the cathode of the diode D1, the anode of the diode D1 is connected to the negative terminal, and the positive terminal is connected to the cathode of the diode D4; the common contact b3 is connected to the power supply terminal E0, and the cathodes of the diode D2 and the anode of the diode D4 are both connected to the power supply terminal E1;

[0024] The closing auxiliary circuit includes a diode D6. The normally closed contact c0 is connected to the anode of the diode D6, and the cathode of the diode D6 is connected to the positive terminal; the opening auxiliary circuit includes a diode D5. The normally open contact c1 is connected to the cathode of the diode D5, and the anode of the diode D5 is connected to the negative terminal.

[0025] Preferably, the closing circuit includes a diode D3 and a power supply terminal E1. The normally closed contact b0 is connected to the anode of the diode D3. The cathode of the diode D3 is connected to the positive terminal of the motor 301. The negative terminal of the motor 301 is connected to the power supply terminal E1. The opening circuit includes a diode D1 and a power supply terminal E2. The normally open contact b1 is connected to the cathode of the diode D1. The cathode of the diode D1 is connected to the negative terminal of the motor 301. The positive terminal of the motor 301 is connected to the power supply terminal E2.

[0026] The closing auxiliary circuit includes a diode D6. The normally closed contact c0 is connected to the anode of the diode D6. The cathode of the diode D6 is connected to the positive terminal. The opening auxiliary circuit includes a diode D5. The normally open contact c1 is connected to the cathode of the diode D5. The anode of the diode D5 is connected to the negative terminal.

[0027] Preferably, the closing voltage signal and the opening voltage signal are the working power supply for supplying power to the motor 301.

[0028] Preferably, the rotation direction of the trigger gear is always the same direction. The voltage directions of the closing voltage signal and the opening voltage signal are opposite.

[0029] Preferably, the circuit breaker further includes an operating mechanism 5 and a manual operation component. The manual operation component and the electric mechanism 3 are respectively drivingly connected to the operating mechanism 5. The operating mechanism 5 includes a pivotally arranged transmission member 501. The electric mechanism 3 further includes a driving gear member 305 and a driven gear 306 that are respectively pivotally arranged. The driving gear member 305 is a trigger gear. The driving gear member 305 is drivingly engaged with the driven gear 306. The driven gear 306 is coaxially arranged with the transmission member 501 and is drivingly engaged therewith. The manual operation component is drivingly engaged with the second switch member 9C of the switching device.

[0030] The driving gear member 305 rotates from the first initial position in the first direction to engage with the driven gear 306. The driving gear member 305 continues to rotate and drives the transmission member 501 to rotate in the second direction through the driven gear 306. After the circuit breaker is closed, the driving gear member 305 continues to rotate to the intermediate position to drive the first switch member 9B to disconnect the closing circuit and connect the opening circuit and disengage from the driven gear 306. The driving gear member 305 rotates from the intermediate position in the first direction and drives the manual operation component to act. The manual operation component drives the transmission member 501 to rotate in the first direction. After the circuit breaker is opened, the driving gear member 305 continues to rotate to the first initial position to drive the first switch member 9B to disconnect the opening circuit and connect the closing circuit.

[0031] Preferably, the circuit breaker further includes a circuit breaker housing 1, and the manual operation assembly is a button mechanism 2, which includes a button member 201, a first connecting rod 202, a connecting member 204, and a second connecting rod 203 that are sequentially drivingly connected. The second connecting rod 203 is also drivingly connected to a transmission member 501. The button member 201 and the connecting member 204 are respectively slidably disposed on the circuit breaker housing 1; by pressing / pulling the button member 201, the operating mechanism 5 is driven to act through the sequentially connected first connecting rod 202, connecting member 204, and second connecting rod 203, so that the circuit breaker is closed / open; the connecting member 204 is drivingly cooperated with a second switch member 9C.

[0032] Preferably, the circuit breaker further includes a locking mechanism 4. One end of the locking mechanism 4 is a driven end of the locking mechanism, protruding outside the circuit breaker housing 1, and the other end is a cooperating end of the locking mechanism. The cooperating end of the locking mechanism 4 cooperates with the button member 201 or the first connecting rod 202.

[0033] For the circuit breaker of the present invention, after the closing / opening operation is completed, the first switch member is driven by the trigger gear to realize the switching of the closing circuit / the opening circuit. Its control principle is simple. When a voltage signal is applied to the electric mechanism, the electric mechanism will act. After the closing / opening operation is completed, the trigger gear drives the first switch member to switch the closing circuit and the opening circuit, and the motor can be stopped. There is no need for the complex circuit structure and control principle for detecting the specific position of the gear in the prior art, thereby simplifying the overall structure of the circuit breaker and the control circuit of the electric mechanism, and also making the working performance of the circuit breaker of the present invention more reliable.

[0034] In addition, for the circuit breaker of the present invention, whether the current state of the circuit breaker (i.e., the open or closed state) corresponds to the position of the trigger gear or not, the circuit breaker can be normally closed / opened by applying a closing voltage signal and an opening voltage signal. It should be noted that the situation of "the current state of the circuit breaker does not correspond to the position of the trigger gear" is caused by the electric mechanism driving the circuit breaker to close or open through the operating mechanism and then manually operating the assembly to open or close the circuit breaker; if only the electric mechanism drives the circuit breaker to close or open through the operating mechanism, the current state of the circuit breaker and the position of the trigger gear are always corresponding and consistent. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a schematic structural diagram of the circuit breaker of the present invention, showing at least the specific structures of the button mechanism, the electric mechanism, and the operating mechanism;

[0036] Figure 2 is a schematic structural diagram of the connecting member of the present invention;

[0037] Figure 3 is a schematic structural diagram of the driving gear member of the present invention;

[0038] Figure 4 It is a schematic diagram of the assembly relationship among the driven gear, energy storage spring and transmission component of the present invention;

[0039] Figure 5 It is a schematic diagram of the structure of the driven gear of the present invention;

[0040] Figure 6 It is a schematic diagram of the structure of the transmission component of the present invention, showing at least the positional relationship among the first transmission component connection hole, the second transmission component connection hole and the transmission component shaft hole;

[0041] Figure 7 It is a schematic diagram of the structure of the transmission component of the present invention, showing at least the positional relationship among the energy storage spring assembly groove, the driven gear limit groove and the transmission component spring limit groove;

[0042] Figure 8 It is a schematic diagram of the structure of the energy storage spring of the present invention;

[0043] Figure 9 It is a schematic diagram of the structure of the circuit breaker of the present invention. The circuit breaker is in the open state and the driving gear component is in the first initial position;

[0044] Figure 10 It is a schematic diagram of the structure of the circuit breaker of the present invention. The circuit breaker is in the open state and the driving gear component rotates from the first initial position to mesh with the driven gear;

[0045] Figure 11 It is a schematic diagram of the structure of the circuit breaker of the present invention. The circuit breaker is in the closing process state and the moving contact and the static contact have been closed;

[0046] Figure 12 It is a schematic diagram of the structure of the circuit breaker of the present invention. The circuit breaker is in the closed state and the driving gear component is in the middle position;

[0047] Figure 13 It is a schematic diagram of the cooperation relationship between the driving gear component and the closing-in place stop platform of the present invention;

[0048] Figure 14 It is a schematic diagram of the assembly structure of the manual-automatic switching device of the present invention;

[0049] Figure 15 It is a schematic diagram of the structure of the circuit breaker operation interface of the circuit breaker housing of the present invention;

[0050] Figure 16 It is a schematic diagram of the structure of the manual-automatic switching device of the present invention, showing the cooperation relationship between the manual-automatic switching device and the switching switch element;

[0051] Figure 17 It is a schematic diagram of the structure of the circuit breaker of the present invention, showing at least the distribution relationship of the various components of the circuit breaker within the circuit breaker housing;

[0052] Figure 18 It is a schematic structural diagram of the circuit breaker of the present invention, showing at least the positional relationship between the circuit board and other components of the circuit breaker;

[0053] Figure 19 It is a schematic diagram showing the positional relationship among the circuit board, the incoming line terminal and the circuit board slot of the present invention;

[0054] Figure 20 It is a schematic diagram showing the positional relationship between the incoming line terminal and the circuit board slot of the present invention;

[0055] Figure 21 It is a schematic structural diagram of the circuit breaker of the present invention, showing at least the positional relationship and the cooperation relationship between the driving gear member and the first switching member;

[0056] Figure 22 It is a schematic structural diagram of the circuit breaker of the present invention, showing at least the positional relationship and the cooperation relationship between the connecting member and the second switching member;

[0057] Figure 23a It is a schematic diagram of the first embodiment of the control circuit of the motor of the present invention. At this time, the circuit breaker is in the open state, and the closing voltage signal is applied across the first switching member and the closing circuit;

[0058] Figure 23b It is a schematic diagram of the first embodiment of the control circuit of the motor of the present invention. At this time, the circuit breaker is in the closed state, and the opening voltage signal is applied across the first switching member and the opening circuit;

[0059] Figure 24a It is a schematic diagram of the second embodiment of the control circuit of the motor of the present invention. At this time, the circuit breaker is in the open state, the first switching member connects the closing circuit, the second switching member connects the closing auxiliary circuit, and the closing voltage signal is applied across the first switching member and the closing circuit;

[0060] Figure 24b It is a schematic diagram of the second embodiment of the control circuit of the motor of the present invention. At this time, the circuit breaker is in the closed state, the first switching member connects the opening circuit, the second switching member connects the opening auxiliary circuit, and the opening voltage signal is applied across the first switching member and the opening circuit;

[0061] Figure 24c It is a schematic diagram of the second embodiment of the control circuit of the motor of the present invention. At this time, the circuit breaker has been switched to the open state by manually operating the component, the first switching member connects the opening circuit, the second switching member connects the closing auxiliary circuit, and the closing voltage signal is applied across the first switching member and the closing circuit;

[0062] Figure 24dIt is a schematic diagram of the second embodiment of the control circuit of the motor of the present invention. At this time, the circuit breaker has been switched to the closed state by driving the manual operation component. The first switch element connects the closing circuit, and the second switch element connects the opening auxiliary circuit. The opening voltage signal is applied across the first switch element and the opening circuit;

[0063] Figure 25a It is a schematic diagram of the third embodiment of the control circuit of the motor of the present invention. At this time, the circuit breaker is in the open state, and the closing voltage signal is applied across the first switch element and the closing circuit;

[0064] Figure 25b It is a schematic diagram of the third embodiment of the control circuit of the motor of the present invention. At this time, the circuit breaker is in the closed state, and the opening voltage signal is applied across the first switch element and the opening circuit;

[0065] Figure 26a It is a schematic diagram of the fourth embodiment of the control circuit of the motor of the present invention. At this time, the circuit breaker is in the open state. The first switch element connects the closing circuit, and the second switch element connects the closing auxiliary circuit. The closing voltage signal is applied across the first switch element and the closing circuit;

[0066] Figure 26b It is a schematic diagram of the fourth embodiment of the control circuit of the motor of the present invention. At this time, the circuit breaker is in the closed state. The first switch element connects the opening circuit, and the second switch element connects the opening auxiliary circuit. The opening voltage signal is applied across the first switch element and the opening circuit;

[0067] Figure 26c It is a schematic diagram of the fourth embodiment of the control circuit of the motor of the present invention. At this time, the circuit breaker has been switched to the open state by driving the manual operation component. The first switch element connects the opening circuit, and the second switch element connects the closing auxiliary circuit. The closing voltage signal is applied across the first switch element and the closing circuit;

[0068] Figure 26d It is a schematic diagram of the fourth embodiment of the control circuit of the motor of the present invention. At this time, the circuit breaker has been switched to the closed state by driving the manual operation component. The first switch element connects the closing circuit, and the second switch element connects the opening auxiliary circuit. The opening voltage signal is applied across the first switch element and the opening circuit. Detailed implementation manners

[0069] The following Figure 1-26d Given embodiments are used to further illustrate the specific implementation manners of the circuit breaker of the present invention. The circuit breaker of the present invention is not limited to the descriptions of the following embodiments.

[0070] The present invention discloses a circuit breaker, which includes a circuit breaker housing 1, a button mechanism 2, an electric mechanism 3, and an operating mechanism 5 disposed within the circuit breaker housing 1; a moving contact 1a connected to the operating mechanism 5, and a stationary contact 1b cooperating with the moving contact 1a; operating the button mechanism 2 can drive the circuit breaker to close / open through the operating mechanism 5, achieving manual closing and opening; the electric mechanism 3 is drivingly coupled with the button mechanism 2 and / or the operating mechanism 5 to drive the circuit breaker to close / open (electric opening / closing), achieving automatic closing and opening. Further, the circuit breaker of the present invention further includes a short-circuit protection mechanism 6, an arc extinguishing system 7, an overload protection mechanism 110, an incoming line terminal 880, and an outgoing line terminal 881; the short-circuit protection mechanism 6 and the overload protection mechanism 110 are respectively drivingly coupled with the operating mechanism 5, when a short-circuit or overload fault occurs in the circuit breaker, the short-circuit protection mechanism 6 and the overload protection mechanism 110 drive the operating mechanism 5 to trip, enabling the moving contact 1a and the stationary contact 1b of the circuit breaker to break.

[0071] The following is the first circuit breaker disclosed by the present invention:

[0072] As Figure 1 、 9 shown in -12, the present invention discloses a circuit breaker, which includes a circuit breaker housing 1, a button mechanism 2, an electric mechanism 3, and an operating mechanism 5 disposed within the circuit breaker housing 1; operating the button mechanism 2 can drive the circuit breaker to close / open through the operating mechanism 5; the electric mechanism 3 is drivingly coupled with the button mechanism 2 and the operating mechanism 5, the electric mechanism 3 drives the circuit breaker to close through the operating mechanism 5, and the electric mechanism 3 drives the circuit breaker to open through the button mechanism 2. The operating mechanism 5 includes a transmission member 501 pivotally disposed on the circuit breaker housing 1 and drivingly connected to the button mechanism 2, pressing the button mechanism 2 drives the transmission member 501 to rotate in the closing direction to achieve manual closing, pulling the button mechanism 2 drives the transmission member 501 to rotate in the reverse direction to achieve manual opening; the electric mechanism 3 drives the transmission member 5 to rotate to close the circuit breaker (electric closing), and the electric mechanism 3 drives the transmission member 501 to rotate in the reverse direction through the button mechanism 2 to open the circuit breaker (electric opening). Further, as Figure 1 、 9As shown in FIG. -12, the electric mechanism 3 includes a driving gear member 305 and a driven gear 306 that are respectively pivotally provided on the circuit breaker housing 1. The driving gear member 305 is drivingly engaged with the driven gear 306, and the driven gear 306 is coaxially provided with and drivingly engaged with the transmission member 501. The driving gear member 305 is drivingly engaged with the driven gear 306, and the driven gear 306 drives the transmission member 501 to rotate in the closing direction to close the circuit breaker. The driving gear member 305 is drivingly engaged with the button mechanism 2, and the button mechanism 2 drives the transmission member 501 to rotate in the reverse direction to open the circuit breaker, realizing automatic opening and closing. The circuit breaker of the present invention includes an electric mechanism for realizing automatic opening and closing of the circuit breaker. Its closing operation is achieved through the cooperation of the electric mechanism and the operating mechanism, and its opening operation is achieved through the cooperation of the electric mechanism and the button mechanism, simplifying the structure of electric opening and closing and extending the service life of the circuit breaker.

[0073] Further, as one of the improvement points of the present invention, the rotation direction of the driving gear member 305 driving the driven gear 306 to close the circuit breaker is the same as the rotation direction of driving the button mechanism 2 to open the circuit breaker. That is, during the automatic opening and closing process, the motor of the electric mechanism 3 always rotates in one direction, which is beneficial to simplifying the control process of the electric mechanism 3. A specific embodiment is that when closing, the driving gear member 305 rotates from the first initial position to the first direction to engage with the driven gear 306, and the driving gear member 306 continues to rotate and drives the transmission member 501 to rotate in the second direction through the driven gear 306. After the circuit breaker is closed, the driving gear member 305 continues to rotate to the intermediate position (the intermediate position refers to the position where the gear member 305 disengages from the driven gear 306 and the gear member 305 does not drive the connecting member 204 in the button mechanism 2) and disengages from the driven gear 306. When opening, the driving gear member 305 rotates from the intermediate position to the first direction and drives the button mechanism 2 to act. The button mechanism 2 drives the transmission member 501 to rotate in the first direction. After the circuit breaker is opened, the driving gear member 305 continues to rotate to the first initial position (i.e., the position that does not affect the manual opening and closing function of the circuit breaker). For the circuit breaker of the present invention, its closing operation is achieved through the cooperation of the electric mechanism 3 and the operating mechanism 5, and its opening operation is achieved through the cooperation of the electric mechanism 3 and the button mechanism 2. First, compared with the circuit breaker in the prior art where both the closing / opening operations are achieved through the cooperation of the electric mechanism 3 and the operating mechanism 5, the wear progress of the operating mechanism 5 is effectively slowed down, which is beneficial to extending the service life of the circuit breaker. Second, during the closing / opening process, the driving gear member 305 of the electric mechanism 3 always rotates in the first direction, that is, during the closing / opening process, the motor 301 of the electric mechanism 3 does not need to change the rotation direction, which is beneficial to simplifying the control process of the electric mechanism 3. Third, the motor 301 of the electric mechanism 3 does not need to frequently switch between forward and reverse rotations, thereby reducing the probability of damage to the motor 301 and being beneficial to extending the service life of the electric mechanism 3.

[0074] Preferably, as Figure 1 shown, the button mechanism 2 includes a button member 201 and a connecting member 204 that are respectively slidably disposed on the circuit breaker housing 1, a first connecting rod 202 with two ends respectively connected to the button member 2 and the connecting member 204, and a second connecting member 203 with two ends respectively connected to the connecting member 204 and the transmission member 501. It should be noted that the button member 201, the first connecting rod 202, and the connecting member 204 of the button mechanism 2 can also be designed as an integral component, thereby reducing the number of parts. For the convenience of the cooperation between the button mechanism 2 and other mechanisms and without affecting the cooperation with the electric mechanism 3, the button mechanism 2 of the present invention is preferably a combination of the button member 201, the first connecting rod 202, the connecting member 204, and the second connecting rod 203. Further, an indicating member (not shown in the figure) for indicating the opening and closing states is provided inside the button member 201, an indicating window is provided on the button member 201, and the button member 201 drives the indicating member to swing or slide during the opening and closing actions to display the opening and closing states of the circuit breaker.

[0075] Furthermore, as Figure 17 shown, the circuit breaker further includes a locking mechanism 4. One end of the locking mechanism 4 is the actuating end of the locking mechanism, protruding outside the circuit breaker housing 1, and the other end is the cooperating end of the locking mechanism, which cooperates with the button mechanism 2. An improvement point of the present invention is that the cooperating end of the locking mechanism 4 of the locking mechanism 4 cooperates with the button member 201 or the first connecting rod 202, and the driving gear member 305 of the electric mechanism 3 cooperates with the connecting member 204; the button mechanism 2 adopts the combination of the button member 201, the first connecting rod 202, and the connecting member 204, which is convenient for realizing the cooperation between the button mechanism 2 and the locking mechanism 4 and the electric mechanism 3 at the same time. It should be noted that the circuit breaker in this embodiment is a plug-in circuit breaker, which is inserted and installed into the circuit breaker assembly position of the cabinet. The locking mechanism 4 cooperates with the button mechanism 2 and the housing of the circuit breaker assembly position to realize the locking, unlocking, preventing the circuit breaker from being not installed in place, preventing the circuit breaker from being installed into or pulled out from the circuit breaker assembly position in the closed state, and preventing the circuit breaker from being closed when not installed in the circuit breaker assembly position. The button mechanism 2 of the present invention is suitable for cooperating with each locking mechanism 4, and all of these belong to the protection scope of the present invention.

[0076] For example, an implementation of a locking mechanism is as follows. A locking hole that cooperates with the driven end of the locking mechanism is correspondingly provided at the circuit breaker assembly position of the cabinet. After the circuit breaker is installed in place, the driven end of the locking mechanism 4 protrudes outside the circuit breaker housing 1 and protrudes into the locking hole of the cabinet, preventing the circuit breaker from being randomly pulled out of the cabinet. By pulling the button member 201, the button member 201, the first link 202, the connecting member 204, or the indicating member can drive the cooperating end of the locking mechanism to retract the driven end of the locking mechanism into the interior of the circuit breaker housing 1, enabling the circuit breaker to be pulled out from the circuit breaker assembly position. Another implementation of the locking mechanism is that when the circuit breaker is not installed in the circuit breaker assembly position, the driven end of the locking mechanism is squeezed by the cabinet wall and retracted into the interior of the circuit breaker housing 1. The cooperating end of the locking mechanism is in limit cooperation with the button member 201, the first link 202, the connecting member 204, or the indicating member, preventing the button member 201 from moving in the closing direction and preventing closing when not installed in the circuit breaker assembly position. When the circuit breaker is installed in the circuit breaker assembly position, the driven end of the locking mechanism is no longer squeezed by the housing of the circuit breaker assembly and moves outward to the outside of the circuit breaker housing 1, causing the cooperating end of the locking mechanism to release the limit cooperation with the button member 201, the first link 202, or the connecting member 204, and the button member 201 can move in the closing direction and close the circuit breaker through the operating mechanism 5.

[0077] Preferably, as Figure 4 , 9As shown in FIG. -12, the circuit breaker of the present invention further includes a energy storage spring 3-5 disposed between the driven gear 306 and the transmission member 501; it is used to realize the compensation for the incomplete automatic closing and improve the reliability of the automatic closing. The function of setting the energy storage spring 3-5 is, firstly, to reserve a certain margin for the meshing stroke between the driving gear member 305 and the sector gear of the driven gear 306, and secondly, even if there are fitting errors between the gears and structural members due to wear, reliable closing can still be achieved through the above-mentioned surplus stroke. Specifically, the driving gear member 305 rotates from the first initial position to the first direction to engage with the driven gear 306, the driving gear member 305 continues to rotate and drives the driven gear 306 to rotate in the second direction, and the driven gear 306 drives the transmission member 501 to rotate in the second direction through the energy storage spring 3-5. After the circuit breaker is closed, the driving gear member 305 continues to rotate in the first direction and drives the driven gear 306 to rotate in the second direction relative to the transmission member 501, so that the energy storage spring 3-5 stores energy until the driving gear member 305 rotates to the middle position and disengages from the driven gear 306. For the circuit breaker of the present invention, an energy storage spring 3-5 is arranged between the driven gear 306 of the electric mechanism 3 and the transmission member 501 of the operating mechanism 5. After the circuit breaker is closed, the driving gear member 305 of the electric mechanism 3 will drive the driven gear 306 to rotate in the second direction relative to the transmission member 501, so that the energy storage spring stores energy, thus ensuring that the circuit breaker is closed in place, that is, ensuring the effective closing of the circuit breaker and improving the user's power consumption safety. Especially after the electric mechanism 3 is used for a long time, there will be fitting errors between the gears due to wear or errors in the position detection of the circuit board, resulting in the problem that the circuit breaker cannot be automatically closed in place. The energy storage spring of the present invention can reliably solve the above problems. Further, as Figure 9 and 12 shown, when the circuit breaker is in the closed state, the driving gear member 305 rotates from the middle position to the first direction and drives the button mechanism 2 to act, and the button mechanism 2 drives the transmission member 501 to rotate in the first direction. After the circuit breaker is tripped, the driving gear member 305 continues to rotate to the first initial position.

[0078] The following is the second circuit breaker disclosed by the present invention:

[0079] As Figure 21 、 23a, as shown in Figures 23b, 25a and 25b, the circuit breaker of the present invention includes an electric mechanism 3 for realizing automatic closing and opening, and an operating mechanism 5. The electric mechanism 3 and the operating mechanism 5 are driven and coordinated (including direct and indirect drive coordination). The electric mechanism 3 includes a motor 301 and a gear set. The gear set is drivingly connected to the motor 301, and the gear set includes a trigger gear; the circuit breaker further includes a switching device, a closing circuit, and a tripping circuit; the switching device includes a first switching member 9B that is drivingly coordinated with the trigger gear. The output end of the first switching member 9B is respectively connected to the closing circuit and the tripping circuit. The motor 301 is respectively connected in series in the closing circuit and the tripping circuit; when the circuit breaker is in the tripping state, the first switching member 9B closes the closing circuit and disconnects the tripping circuit at the same time, a closing voltage signal is applied across the first switching member 9B and the closing circuit. After the electric mechanism 3 drives the circuit breaker to close, the trigger gear drives the first switching member 9B to disconnect the closing circuit and connect the tripping circuit; when the circuit breaker is in the closed state, the first switching member 9B closes the tripping circuit and disconnects the closing circuit at the same time, a tripping voltage signal is applied across the first switching member 9B and the tripping circuit. After the electric mechanism 3 drives the circuit breaker to trip, the trigger gear drives the first switching member 9B to disconnect the tripping circuit and connect the closing circuit. For the circuit breaker of the present invention, after the closing / tripping operation is completed, the trigger gear drives the first switching member 9B to realize the switching of the closing circuit / tripping circuit. Its control principle is simple. By applying a voltage signal to the electric mechanism 3, the electric mechanism 3 will act. After the closing / tripping operation is completed, the trigger gear drives the first switching member 9B to switch the closing circuit and the tripping circuit, and the motor can be stopped. There is no need for the complex circuit structure and control principle for detecting the specific position of the gear in the prior art, thus simplifying the overall structure of the circuit breaker and the control circuit of the electric mechanism 3, and also making the working performance of the circuit breaker of the present invention more reliable. It should be noted that the motor of the present invention described above is applicable to pure electric closing and opening operations.

[0080] The following is the third circuit breaker disclosed by the present invention:

[0081] Preferably, as Figure 21 , 22 , as shown in Figures 24a-24d, 26a-26d, the circuit breaker of the present invention further includes a manual operation component, a closing auxiliary circuit, and a tripping auxiliary circuit. The manual operation component drives the circuit breaker to close / trip through the operating mechanism 5; the switching device further includes a second switching member 9C that is drivingly coordinated with the manual operation component or the operating mechanism 5. The output end of the second switching member 9C is respectively connected to the closing auxiliary circuit and the tripping auxiliary circuit; the manual operation component is drivingly connected to the operating mechanism 5; the closing auxiliary circuit and the tripping auxiliary circuit are respectively connected to the two input ends of the motor 301; the input end of the second switching member 9C is connected to the input end of the first switching member 9B;

[0082] When the circuit breaker is in the open state, the first switch member 9B is connected to the closing circuit and the second switch member 9C is connected to the closing auxiliary circuit, a closing voltage signal is applied across the first switch member 9B and the closing circuit. After the electric mechanism 3 drives the circuit breaker to close, the trigger gear drives the first switch member 9B to disconnect the closing circuit and connect the opening circuit. At the same time, the action when the manual operation component or the operating mechanism 5 closes drives the second switch member 9C to disconnect the closing auxiliary circuit and connect the opening auxiliary circuit;

[0083] When the circuit breaker is in the closed state, the first switch member 9B is connected to the opening circuit and the second switch member 9C is connected to the opening auxiliary circuit, an opening voltage signal is applied across the first switch member 9B and the opening circuit. After the electric mechanism 3 drives the circuit breaker to open, the trigger gear drives the first switch member 9B to disconnect the opening circuit and connect the closing circuit. At the same time, the action when the manual operation component or the operating mechanism 5 opens drives the second switch member 9C to disconnect the opening auxiliary circuit and connect the closing auxiliary circuit;

[0084] When the circuit breaker is in the closed state, the first switch member 9B is connected to the opening circuit and the second switch member 9C is connected to the opening auxiliary circuit. After the circuit breaker is opened by driving the manual operation component, the action when the manual operation component or the operating mechanism 5 opens drives the second switch member 9C to disconnect the opening auxiliary circuit and connect the closing auxiliary circuit; An opening voltage signal is applied across the first switch member 9B and the opening circuit, the motor 301 drives the trigger gear to rotate, the trigger gear drives the first switch member 9B to disconnect the opening circuit and connect the closing circuit, and then the electric mechanism 3 drives the circuit breaker to close, the trigger gear drives the first switch member 9B to disconnect the closing circuit and connect the opening circuit. At the same time, the manual operation component or the operating mechanism 5 drives the second switch member 9C to disconnect the closing auxiliary circuit and connect the opening auxiliary circuit;

[0085] When the circuit breaker is in the open state, the first switch member 9B is connected to the closing circuit and the second switch member 9C is connected to the closing auxiliary circuit. After the circuit breaker is closed by driving the manual operation component, the action when the manual operation component or the operating mechanism 5 closes drives the second switch member 9C to disconnect the closing auxiliary circuit and connect the opening auxiliary circuit; A closing voltage signal is applied across the first switch member 9B and the closing circuit, the motor 301 drives the trigger gear to rotate, the trigger gear drives the first switch member 9B to disconnect the closing circuit and connect the opening circuit, and then the electric mechanism 3 drives the circuit breaker to open, the trigger gear drives the first switch member 9B to disconnect the opening circuit and connect the closing circuit. At the same time, the manual operation component or the operating mechanism 5 drives the second switch member 9C to disconnect the opening auxiliary circuit and connect the closing auxiliary circuit.

[0086] The circuit breaker of the present invention can close or open the circuit breaker normally by loading the closing voltage signal and the opening voltage signal, whether the current state of the circuit breaker (i.e., the opening or closing state) corresponds to or is inconsistent with the position of the trigger gear. It should be pointed out that the situation that "the current state of the circuit breaker is inconsistent with the position of the trigger gear" is caused by the electric mechanism 3 driving the circuit breaker to close or open through the operating mechanism 5, and then opening or closing the circuit breaker through the manual operating component; if only the electric mechanism 3 drives the circuit breaker to close or open through the operating mechanism 5, the current state of the circuit breaker and the position of the trigger gear are always consistent. Therefore, through the cooperation of the trigger gear, the first switch 9B, the closing circuit, the opening circuit, the second switch 9C, the closing auxiliary circuit, and the opening auxiliary circuit, the circuit breaker of the present invention can be compatible with manual / automatic closing and opening operations at the same time.

[0087] It should be pointed out that the second and third types of circuit breakers can be implemented on the basis of the first type of circuit breaker. Specifically: the second type of circuit breaker can be equipped with a first switch 9B, a closing circuit, and an opening circuit on the first type of circuit breaker, and the first switch 9B is driven in cooperation with the trigger gear of the electric mechanism 3; the third type of circuit breaker can be equipped with a second switch 9C, a closing auxiliary circuit, and an opening auxiliary circuit on the basis of the second type of circuit breaker, and the second switch 9C is driven in cooperation with the manual operating component or the operating mechanism 5.

[0088] like Figure 1-20 FIG. 1 shows the first embodiment of the circuit breaker of the present invention, which is the first embodiment of the first type of circuit breaker.

[0089] like Figure 1 , 9 -12, the circuit breaker of the present invention includes a circuit breaker housing 1 and a button mechanism 2, an electric mechanism 3 and an operating mechanism 5 arranged in the circuit breaker housing 1. The button mechanism 2 is connected to the operating mechanism 5 and can drive the circuit breaker to close / open through the operating mechanism 5 to achieve manual opening and closing; the electric mechanism 3 cooperates with the button mechanism 2 and / or the operating mechanism 5 to drive the circuit breaker to close / open through the operating mechanism 5 to achieve automatic opening and closing.

[0090] Preferably, Figure 1As shown, the driving member 501 of the electric mechanism 3 and the operating mechanism 5 are drivingly engaged to achieve the closing of the circuit breaker, and are drivingly engaged with the button mechanism 2 to achieve the opening of the circuit breaker. The electric mechanism 3 includes a driving gear member 305 and a driven gear 306 that are respectively pivotally arranged on the circuit breaker housing 1. The driving gear member 305 is drivingly engaged with the driven gear 306 and the button mechanism 2 respectively; the operating mechanism 5 includes a transmission member 501 that is pivotally arranged on the circuit breaker housing 1 and is drivingly connected to the button mechanism 2. The driven gear 306 is coaxially arranged with the transmission member 501 and is drivingly engaged; the driving gear member 305 rotates from a first initial position (as shown in Figure 9 shown) to a first direction to engage with the driven gear 306 (as shown in Figure 10 shown). The driving gear member 305 continues to rotate and drives the transmission member 501 to rotate in a second direction through the driven gear 306. After the circuit breaker is closed, the driving gear member 305 continues to rotate to an intermediate position (as shown in Figure 12 shown) and disengages from the driven gear 306; the driving gear member 305 rotates from the intermediate position to the first direction and drives the button mechanism 2 to act. The button mechanism 2 drives the transmission member 5 to rotate in the first direction. After the circuit breaker is opened, the driving gear member 305 continues to rotate to the first initial position.

[0091] The rotation direction of the driving gear member 305 when driving the driven gear 306 to close the circuit breaker is the same as the rotation direction when driving the button mechanism 2 to open the circuit breaker, which is beneficial to simplifying the control process of the electric mechanism 3. Specifically, as shown in Figure 1 , 9 -12, the first direction is the counterclockwise direction, and the second direction is the clockwise direction. During the process of driving the circuit breaker to close and open, the driving gear member 305 always rotates in the counterclockwise direction (i.e., always rotates in the same direction); when the driving gear member 305 is in the first initial position or the intermediate position, it disengages from the driven gear 306. When the driving gear member 305 rotates to the first initial position or the intermediate position, the driving gear member 305 or the driven gear 306 triggers to disconnect the power supply circuit of the electric mechanism 3, so that the motor 301 is powered off and the driving gear member 305 stops rotating, which can greatly simplify the control process of the electric mechanism 3. Of course, when the driving gear member 305 rotates to the first initial position or the intermediate position, it is also possible that the driving gear member 305 or the driven gear 306 triggers a position sensor to transmit position information to the control chip, and then the control chip controls the motor to stop rotating, but the implementation is relatively complex.

[0092] Preferably, the driven gear 306 and the transmission member 501 are an integral component or a split component.

[0093] Preferably, the electric mechanism 3 includes a motor 301 and a gear set that are sequentially drivingly connected, and the gear set includes a transmission gear set, a driving gear member 305, and a driven gear 306. As Figure 1 shown, it is an embodiment of the electric mechanism 3. The electric mechanism 3 includes a motor 301, a worm 302, a first transmission gear member 303, a second transmission gear member 304, and a driving gear member 305 that are sequentially drivingly engaged, and a driven gear 306 that is drivingly engaged with the driving gear member 305; the transmission gear set includes the first transmission gear member 303 and the second transmission gear member 304, and the first transmission gear member 303, the second transmission gear member 304, and the driving gear member 305 are respectively pivotally arranged on the circuit breaker housing 1. Obviously, the number of transmission gear members of the transmission gear set can be reduced or increased according to needs.

[0094] Preferably, as Figure 3 shown, the driving gear member 305 includes a first driving gear 305-1 and a driving tooth 305-20 that are respectively drivingly engaged with the driven gear 306 and the button mechanism 2. Specifically, the driving gear member 305 includes a first driving gear 305-1, a second driving gear 305-2, and a third driving gear 305-3 that are coaxially linked and sequentially arranged. The third transmission gear 305-3 is drivingly engaged with the second transmission gear member 304 of the transmission gear set, and the first driving gear 305-1 and the second driving gear 305-2 are respectively drivingly engaged with the driven gear 306 and the button mechanism 2; further, as Figure 1 、 4 shown, both the first driving gear 305-1 and the driven gear 306 are sector gears; the second driving gear 305-2 is provided with a driving tooth 305-20 that is drivingly engaged with the button mechanism 2. When closing, the driving gear member 305 rotates in the first direction, the first driving gear 305-1 meshes with the driven gear 306, and the driving tooth 305-20 avoids the button mechanism 2. After closing, the first driving gear 305-1 disengages from the driven gear 306; when opening, the driving gear member 305 continues to rotate in the first direction, and the driving tooth 305-20 is drivingly engaged with the button mechanism 2 to achieve opening. At this time, the first driving gear 305-1 and the driven gear 306 remain disengaged. Obviously, the driving tooth 305-20 can be Figure 3 shown as only including one driving tooth 305-20, or can be set as a sector gear with multiple driving teeth according to needs. The connecting member 204 on the button mechanism 2 can be set to be tooth-shaped and cooperate with the second driving gear 305-2 having multiple driving teeth. In addition, the driving tooth 305-20 can also be arranged on the first driving gear 305-1.

[0095] Preferably, as Figure 1As shown, the button mechanism 2 includes a button member 201 and a connecting member 204 that are respectively slidably disposed on the circuit breaker housing 1, a first connecting rod 202 with two ends respectively connected to the button member 201 and the connecting member 204, and a second connecting rod 203 with two ends respectively connected to the connecting member 204 and the transmission member 501; pressing / pulling the button member 201 drives the transmission member 501 to rotate in the second direction / first direction through the sequentially connected first connecting rod 202, connecting member 204, and second connecting rod 203, so that the circuit breaker closes / opens. Further, as Figure 1 shown, the second driving gear 305-2 of the driving gear member 305 is in driving cooperation with the connecting member 204.

[0096] Specifically, as Figure 1 , 9 -12 in the shown direction, the button member 201, the first connecting rod 202, the connecting member 204, and the second connecting rod 203 of the button mechanism 2 are arranged in a straight line from top to bottom in sequence. Pulling up / pressing down the button member 201, the button member 201 drives the transmission member 501 to rotate counterclockwise / clockwise through the sequentially connected first connecting rod 202, connecting member 204, and second connecting rod 203, so that the circuit breaker closes / opens; when the circuit breaker is in the closed state, the second driving gear 305-2 drives the connecting member 204 to move upward, and the connecting member 204 drives the transmission member 501 to rotate clockwise through the second connecting rod 203, so that the circuit breaker opens.

[0097] Preferably, as Figure 17 shown, the circuit breaker of the present invention further includes a locking mechanism 4. One end of the locking mechanism 4 is the actuating end of the locking mechanism, protruding outside the circuit breaker housing 1, and the other end is the cooperating end of the locking mechanism, which is in limiting cooperation with the button mechanism 2. The locking mechanism 4 includes a locking member pivotally disposed in the middle on the circuit breaker housing 1, and the two ends of the locking member are respectively the actuating end and the cooperating end of the locking mechanism. Specifically, as Figure 17 shown in the direction, the upper end and the lower end of the locking member of the locking mechanism 4 are respectively the actuating end and the cooperating end of the locking mechanism. When the button member 201 or the first connecting rod 202 is in limiting cooperation with the cooperating end of the locking mechanism, the button member 201 cannot move downward (closing direction), and the circuit breaker cannot close.

[0098] Preferably, both the first connecting rod 202 and the second connecting rod 203 are U-shaped connecting rods.

[0099] Preferably, as Figure 1 shown, the button mechanism 2 further includes a first return spring 205 for driving the connecting member 204 to reset, for driving the button mechanism 2 to reset after the circuit breaker trips; the circuit breaker housing 1 further includes a connecting member track groove, and the connecting member 204 slides linearly along the connecting member track groove.

[0100] Preferably, asFigure 2 As shown, it is an embodiment of the connecting member 204.

[0101] As Figure 2 shown, the connecting member 204 is a strip-shaped member, including a connecting member main body 204-0, a first connecting member hole 204-1 and a second connecting member hole 204-3 which are respectively arranged at both ends of the connecting member main body 204-0 and are respectively matched with the first connecting rod 202 and the second connecting rod 203, a driven table surface 204-4 of the connecting member which is drivingly matched with the driving teeth 305-20 of the driving gear member 305, a connecting member spring limiting boss 204-2 arranged on one side of the connecting member main body 204-0, and a connecting member track boss 204-5 arranged on the connecting member main body 204-0. Further, as Figure 2 shown, the connecting member track boss 204-5 and the first connecting member hole 204-1 are arranged at the same end of the connecting member main body 204-0, and the connecting member track boss 204-5 is arranged on the side of the connecting member main body 204-0 facing the bottom plate of the circuit breaker housing 1; the driven table surface 204-4 of the connecting member and the second connecting member hole 204-3 are arranged at the same end of the connecting member main body 204-0, and the driven table surface 204-4 of the connecting member faces the transmission member 501 of the operating mechanism 5; the connecting member spring limiting boss 204-2 is arranged on the side of the connecting member main body 204-0 far from the electric mechanism 3.

[0102] Specifically, as Figure 2 shown in the direction, the first connecting member hole 204-1 and the connecting member track boss 204-5 are located at the left end of the connecting member main body 204-0, and the connecting member track boss 204-5 is arranged on the lower side of the connecting member main body 204-0; the second connecting member hole 204-3 and the driven table surface 204-4 of the connecting member are located at the right end of the connecting member main body 204-0, and the driven table surface 204-4 of the connecting member faces the right side; the connecting member spring limiting boss 204-2 is arranged at the rear side of the connecting member main body 204-0.

[0103] As Figure 1 shown, the first return spring 205 is arranged between the connecting member spring limiting boss 204-2 and the circuit breaker housing 1; the connecting member track boss 204-5 is slidably arranged in the connecting member track groove. The effective limit between the connecting member 204 and the circuit breaker housing 1 is formed by the cooperation of the connecting member track boss 204-5 and the connecting member track groove, ensuring the stability of the sliding process of the connecting member 204, thereby improving the stability of the performance of the circuit breaker. Further, as Figure 17 shown, the locking member 4 and the first return spring 205 are both located on the same side of the button member 201 and the connecting member 204. Specifically, as Figure 17 shown in the direction, the locking member 4 and the first return spring 205 are both located on the right side of the button member 201 and the connecting member 204.

[0104] Preferably, as Figure 1 shown, one end of the button member 201 is an operating end located outside the circuit breaker housing 1, and the other end extends into the circuit breaker housing 1. A button member connection hole for installing the first link 202 is provided on the other end. The button member connection hole is an elongated waist-shaped hole, so that there is a dead stroke at one end when the button member 201 is pressed. When it is necessary to pull out the circuit breaker after tripping from the installation cabinet, the button member 201 of the button mechanism 2 is pulled, so that the locking mechanism 4 is completely retracted into the interior of the circuit breaker housing, so as to contact the limit fit between the locking mechanism 4 and the housing of the circuit breaker assembly position, and pull out the circuit breaker from the circuit breaker assembly position.

[0105] Preferably, as Figure 1 shown, it is an embodiment of the operating mechanism 5.

[0106] As Figure 1 shown, the operating mechanism 5 includes a transmission member 501 and a rotating plate 505 pivotally arranged on the circuit breaker housing 1 respectively, a tripping latch 503 and a latch 504 pivotally arranged on the rotating plate 505 and in locking engagement, a third link 502 with two ends respectively connected to the transmission member 501 and the tripping latch 503, and a second return spring 506 for driving the rotating plate 504. The second return spring 50 is arranged between the latch 504 and the circuit breaker housing 1. The circuit breaker further includes a static contact 1b and a moving contact 1a connected to the operating mechanism 5. One end of the moving contact 1a is connected to the rotating plate 505, and the static contact 1b is fixedly arranged on the circuit breaker housing 1. The structure, principle and working process of the operating mechanism 5 in this embodiment are similar to those of the prior art and will not be described in detail here. Of course, the operating mechanism 5 of the circuit breaker of the present invention can also adopt other structures.

[0107] Preferably, as Figure 4-8 shown, it is the second embodiment of the circuit breaker of the present invention, and it is the 2nd embodiment of the first type of circuit breaker.

[0108] As Figure 4As shown, the difference between the circuit breaker of this embodiment and that of the first embodiment lies in that: it further includes a energy storage spring 3-5 arranged between the driven gear 306 and the transmission member 501; which is used to achieve the compensation for the incomplete automatic closing and improve the reliability of automatic closing. The function of setting the energy storage spring 3-5 is, firstly, to reserve a certain margin for the meshing stroke between the driving gear member 305 and the sector gear of the driven gear 306, and secondly, to ensure reliable closing even if there is a mating error between the gears due to wear. Specifically, the driving gear member 305 rotates from the first initial position to the first direction to mesh with the driven gear 306, the driving gear member 305 continues to rotate and drives the driven gear 306 to rotate in the second direction, the driven gear 306 drives the transmission member 501 to rotate in the second direction through the energy storage spring 3-5. After the circuit breaker is closed, the driving gear member 305 continues to rotate in the first direction and drives the driven gear 306 to rotate in the second direction relative to the transmission member 501, so that the energy storage spring 3-5 stores energy and the moving and static contacts are reliably in contact until the transmission gear member 305 rotates to the middle position and disengages from the driven gear 306, and the driven gear 306 is reset relative to the transmission member 501 under the action of the energy release of the energy storage spring 3-5 (when the energy storage spring 3-5 releases energy, it will give the driven gear 306 a force to rotate in the first direction relative to the transmission member 501).

[0109] Preferably, as Figure 4 and 8 shown, the energy storage spring 3-5 is a torsion spring, including a spring body 3-50, a first spring arm 3-51 and a second spring arm 3-52; the spring body 3-50 is arranged between the driven gear 306 and the transmission member 501 and is coaxially arranged with the driven gear 306 and the transmission member 501, the first spring arm 3-51 is in limit fit with the transmission member 501, and the second spring arm 3-52 is in limit fit with the driven gear 306. Further, as Figure 4-7 shown, the transmission member 51 includes a driven gear limit groove 501-306 arranged on one side thereof, the driven gear 306 includes a driven gear body 306-2 and a first sector gear portion 306-1 arranged on one side of the driven gear body 306-2, the driven gear body 306-2 is pivotally arranged coaxially with the transmission member 501 on the circuit breaker housing 1, the first sector gear portion 306-1 is arranged in the driven gear limit groove 501-306, one end of the first sector gear portion 306-1 abuts against the side wall of one end of the driven gear limit groove 501-306, and there is a first movement gap between the other end of the first sector gear portion 306-1 and the side wall of the other end of the driven gear limit groove 501-306; the spring body 3-50 is located between the driven gear body 306-2 and the transmission member 51.

[0110] Preferably, as Figure 4-7As shown, the first sector gear part 306-1 includes a first sector gear part head end face 306-10 and a first sector gear part tail end face 306-11 respectively arranged at both ends thereof. The transmission member 501 further includes a driven gear limiting groove head end face 501-6 and a driven gear limiting groove tail end face 501-4 arranged at both ends of the driven gear limiting groove 501-306. The first sector gear part head end face 306-10 abuts against the driven gear limiting groove head end face 501-6, and a first movement gap is provided between the first sector gear part tail end face 306-11 and the driven gear limiting groove tail end face 501-4.

[0111] Specifically, as Figure 4 shown, when the circuit breaker is in the closed state or the open state, the energy storage spring 3-5 makes the first sector gear part head end face 306-10 of the driven gear 306 abut against the driven gear groove head end face 501-6, and a first movement gap is formed between the first sector gear part tail end face 306-11 and the driven gear limiting groove tail end face 501-4; as Figure 9-12 shown, the driving gear member 305 rotates in the first direction (counterclockwise direction) until it meshes with the first sector gear part 306-1 of the driven gear 306 (as Figure 10 shown), the driving gear member 305 continues to rotate and drives the driven gear 306 to rotate in the second direction (clockwise direction) through the first sector gear part 306-1. The driven gear 306 then drives the transmission member 501 to rotate in the second direction (clockwise direction) through the energy storage spring 3-5. When the operating mechanism 5 drives the moving contact 1a to close with the static contact 1b (as Figure 11 shown), after the circuit breaker is closed, the transmission member 501 is fixed in position and no longer rotates. As Figure 11 shown, at this time, the driving gear member 305 is still meshed with the first sector gear part 306-1. Preferably, it is set to be disengaged by one irregular tooth. Then the driving gear member 305 continues to rotate and drives the driven gear 306 to rotate in the second direction (clockwise direction) relative to the transmission member 501 through the first sector gear part 306-1, so that the energy storage spring 3-5 stores energy. The energy storage spring 3-5 then applies the stored energy to the transmission member 501 (that is, applies a thrust to the transmission member 501 to make it rotate in the first direction), ensuring that the circuit breaker can still be effectively closed due to the dimensional deviation of the structural parts or the gear wear of the motor mechanism. As Figure 12 shown, after the circuit breaker is closed, the driving gear member 305 continues to rotate to the middle position and disengages from the first sector gear part 306-1. Then the driven gear 306 will reset under the energy release action of the energy storage spring 3-5 (that is, the first sector gear part head end face 306-10 returns to the state of abutting against the driven gear limiting groove head end face 501-6).

[0112] Preferably, as Figure 4As shown, the driven gear 306 further includes a driven gear spring limiting hole 306-3 provided on the driven gear body 306-2, and the transmission member 501 further includes a transmission member spring limiting groove 501-5 provided at one end of the driven gear limiting groove 501-306. The transmission member spring limiting groove 501-5 and the end face 501-4 of the driven gear limiting groove are located at the same end of the transmission gear limiting groove 501-306. The first spring arm 3-51 is in limiting cooperation with the transmission member spring limiting groove 501-5, and the second spring arm 3-52 is in limiting cooperation with the driven gear spring limiting hole 306-3.

[0113] Preferably, as Figure 4-7 shown, the transmission member 501 further includes a transmission member main body 501-0 and a transmission member spring assembly groove 501-7 provided on one side of the transmission member main body 501-0. The driven gear limiting groove 501-306 is provided on one side of the transmission member spring assembly groove 501-7. The driven gear body 306-2 and the first sector gear portion 306-1 are arranged in a staggered layer, and the first sector gear portion 306-1 is offset toward the side where the transmission member 501 is located relative to the driven gear body 306-2. The spring main body 3-50 is arranged in the transmission member spring assembly groove 501-7 and is limited between the driven gear body 306-2 and the transmission member main body 501-0.

[0114] Preferably, as Figure 6 and 7 shown, it is an embodiment of the transmission member 501.

[0115] As Figure 6 and 7 shown, the transmission member 501 is of a cylindrical structure, including a transmission member main body 501-0, a transmission member spring assembly groove 501-7 and a driven gear limiting groove 501-306 provided on one side of the transmission member main body 501-0, and a transmission member shaft hole 501-3, a first transmission member connection hole 501-1 and a second transmission member connection hole 501-2 respectively provided on the transmission member main body 501-0. The transmission member spring assembly groove 501-7 and the driven gear limiting groove 501-306 are located on the same side of the transmission member main body 501-0, and the driven gear limiting groove 501-306 is provided on one side of the transmission member spring assembly groove 501-7. The transmission member shaft hole 501-3, the first transmission member connection hole 501-1 and the second transmission member connection hole 501-2 are located at the three vertices of a triangle. The first transmission member connection hole 501-1 is provided close to the driven gear limiting groove 501-306. The transmission member 501 is pivotally arranged through the transmission member shaft hole 501-3. The first transmission member connection hole 501-1 is connected to the second link 203 of the button mechanism 2, and the second transmission member connection hole 501-2 is connected to the third link 502 of the operating mechanism 5.

[0116] Preferably, asFigure 7 and 13 As shown, the transmission member 501 further includes a stroke limit groove 501-8, and the stroke limit groove 501-8 and the driven gear limit groove 501-306 are respectively arranged on both sides of the transmission member spring assembly groove 501-7; the circuit breaker housing 1 further includes an in-place stop 102 arranged on one side of the transmission member 501; when the circuit breaker is in the open state, one side wall of one end of the stroke limit groove 510-8 is in limit cooperation with the in-place stop 102, and when the circuit breaker is in the closed state, the other side wall of the stroke limit groove 510-8 is in limit cooperation with the in-place stop 102. Further, as Figure 13 shown, when the circuit breaker is closed, one end of the stroke limit groove 501-8 (as Figure 13 shown in the direction, which is the lower end of the stroke limit groove 501-8) is in limit cooperation with the in-place stop 102, and when the circuit breaker is open, the other end of the stroke limit groove 501-8 (as Figure 13 shown in the direction, which is the upper end of the stroke limit groove 501-8) is in limit cooperation with the in-place stop 102. The limit cooperation between the stroke limit groove 510-8 and the in-place stop 102 effectively limits the rotation stroke of the transmission member 501, avoiding the situation that the transmission member 501 rotates excessively and damages the operating mechanism 5.

[0117] Preferably, as Figure 4 and 5 shown, it is an embodiment of the driven gear 306.

[0118] As Figure 4 and 5 shown, the driven gear 306 includes a driven gear body 306-2, a first sector gear portion 306-1, and a driven gear shaft hole 306-4 and a driven gear spring limit hole 306-3 respectively arranged on the driven gear body 306-2; the driven gear body 306-2 includes a body substrate 306-20, a body limit table 306-21 and a body spring limit table 306-22 which are coaxially arranged in sequence and have diameters decreasing in sequence. The body substrate 306-20 abuts against one side of the transmission member body 501-0 of the transmission member 501, the body limit table 306-21 is inserted into the transmission member spring assembly groove 501-7 of the transmission member 501, and the body spring limit table 306-22 is inserted into the middle of the spring body 3-50 of the energy storage spring 3-5; one end of the first sector gear portion 306-1 is connected to one side of the body substrate 306-20 connected to the body limit table 306-21 and the outer peripheral edge of the body limit table 306-21 respectively. Further, as Figure 4 and 5 shown, the driven gear spring limit hole 306-3 is located between the driven gear shaft hole 306-4 and the first sector gear portion 306-1.

[0119] Preferably, as Figure 14-16 shown, it is the third embodiment of the circuit breaker of the present invention and the 3rd embodiment of the first type of circuit breaker.

[0120] As Figure 14-16 shown, the difference between the circuit breaker of this embodiment and that of the first embodiment lies in that: the circuit breaker further includes a manual-automatic switching device arranged inside the circuit breaker housing 1. The circuit breaker is a plug-in circuit breaker, and the circuit breaker housing 1 is basically in a parallelepiped structure, including a circuit breaker operation interface 1i arranged at one end thereof and a button assembly hole and an outgoing line terminal 881 arranged on the circuit breaker operation interface 1i. One end of the button mechanism 2 is inserted into the button assembly hole, and an incoming line terminal 880 is arranged at the other end of the circuit breaker housing 1; the circuit breaker further includes a manual-automatic switching device arranged inside the circuit breaker housing 1, and the manual-automatic switching device includes a switching operation element 7a and a switching switch element 9A. The switching operation element 7a is in driving cooperation with the switching switch element 9A, and the switching switch element 9A is used to realize the switching of the circuit breaker between the manual working mode and the automatic working mode, and enable or disable the automatic working mode of the circuit breaker by controlling the working state of the electric mechanism 3; the switching operation element 7a is arranged on the circuit breaker operation interface 1i, on one side of the button assembly hole and is movably connected to the circuit breaker housing 1. For the circuit breaker of the present invention, its manual-automatic switching device includes a switching operation element 7a and a switching switch element 9A in driving cooperation, with a simple structure and convenient operation; the switching operation element 7a, one end of the button mechanism 2 and the outgoing line terminal 881 are all located on the circuit breaker operation interface 1i, with a large operation space, which is convenient for users to operate the circuit breaker and is easy to observe.

[0121] Furthermore, as Figure 14-16 shown, the manual-automatic switching device further includes a switching transmission element 8a, and the switching operation element 7a drives the switching switch element 9A to act through the switching transmission element 8a; the switching operation element 7a is a knob rotatably arranged on the circuit breaker housing 1, including a knob connection part 70a and a knob operation end 71a and a knob driving part 72a respectively arranged on both sides of the knob connection part 70a; the switching switch element 9A is a microswitch, one end of the switching transmission element 8a is in driving connection with the knob driving part 72a, and the other end is in driving cooperation with the switching switch element 9A; by screwing the knob, the switching transmission element 8a is driven to move towards or away from the direction where the switching switch element 9A is located, pressing against or releasing the driving rod of the microswitch.

[0122] Furthermore, as Figure 16As shown, the knob driving part 720a includes a knob driving inclined surface 720a which is drivingly engaged with the switching transmission element 8a. The knob driving inclined surface 720 gradually deflects towards the switching transmission element 8a from one end close to the knob connecting part 70a to the other end. Mechanical transmission is adopted between the components of the manual / automatic switching device, ensuring reliable transmission and simple structure for easy assembly.

[0123] It should be noted that the electric mechanism 3 has two working states, namely: normal working state and disengaged working state; in the automatic working mode, the electric mechanism 3 is in the normal working state, the power supply circuit of the electric mechanism 3 is continuous, and / or the electric mechanism 3 can normally receive closing / opening signals, enabling manual closing / opening and automatic closing / opening; in the manual working mode, the electric mechanism 3 is in the disengaged working state, the power supply circuit of the electric mechanism 3 is cut off, and / or the electric mechanism 3 cannot receive closing / opening signals, and only manual closing / opening is possible.

[0124] Preferably, the switching switch element 9a is connected in series in the power supply circuit of the electric mechanism 3. By cutting off or connecting the switching switch element 9a, the power supply circuit of the electric mechanism 3 can be cut off or connected, thereby realizing the switching between the manual working mode of the circuit breaker (only manual closing / opening is possible, and automatic closing / opening is not possible, the power supply circuit of the electric mechanism 3 is cut off) and the automatic working mode (the automatic working mode is enabled, and both manual closing / opening and automatic closing / opening are possible, the power supply circuit of the electric mechanism 3 is connected).

[0125] Preferably, the circuit breaker further includes a circuit board 111 connected to the electric mechanism 3. The switching switch element 9a is arranged on the circuit board 111 and is connected to the power supply control system of the electric mechanism 3 through the circuit board 111. The power supply control system cuts off or connects the working power supply of the electric mechanism 3 through the switching switch element 9a, thereby realizing the switching of the circuit breaker between the manual working mode and the automatic working mode.

[0126] In addition, the switching switch element 9A can also be used to connect to a control chip for transmitting switching control signals. The control chip realizes the switching of the circuit breaker between the manual working mode and the automatic working mode according to the high and low levels of the switching control signals. When the circuit breaker is in the manual working mode, even if the control chip receives an automatic closing control signal, it does not control the electric mechanism to perform an automatic closing operation.

[0127] Preferably, as Figure 15As shown, the outgoing line terminal 881 is a plug-in wiring terminal. The circuit breaker housing 1 further includes an outgoing line hole 1o and a wire removal hole 1d of the outgoing line terminal 881 provided on the circuit breaker operation interface 1i. The outgoing line hole 1o and the wire removal hole 1d are used in one-to-one cooperation. The wire is inserted through the outgoing line hole 1o and connected to the outgoing line terminal 881, and is fixed by being clamped by an elastic member inside the outgoing line terminal 881. The outgoing line hole 1o is used to drive the elastic member so that the wire can be pulled out. The outgoing line hole 1o, the wire removal hole 1d, and the switching operation element 7a are all located on the same side of the button assembly hole, and the switching operation element 7a is located between a wire removal hole 1d and the button assembly hole. Further, as Figure 15 shown, the circuit breaker housing 1 includes two outgoing line holes 1o and two wire removal holes 1d, namely a first outgoing line hole and a first wire removal hole that are used in cooperation, and a second outgoing line hole and a second wire removal hole that are used in cooperation. The first wire removal hole and the second outgoing line hole are arranged close to the button assembly hole, and the switching operation element 7a is located in the space surrounded by the first wire removal hole, the second outgoing line hole, and the button assembly hole. Further, as Figure 15 shown, the first outgoing line hole, the first wire removal hole, and the switching operation element 7a are arranged side by side in sequence on one side of the circuit breaker operation interface 1i, and the second wire removal hole and the second outgoing line hole are arranged side by side in sequence on the other side of the circuit breaker operation interface 1i.

[0128] Specifically, as Figure 14 and 16 shown in the direction, the upper end of the switching transmission element 8a is in driving cooperation with the switching operation element 7a, and the lower end is in driving cooperation with the switching switch element 9a; by screwing the switching operation element 7a, the switching transmission element 8a is driven to move downward, and the switching transmission element 8a presses against the driving rod of the microswitch (switching switch element 9a) to realize signal switching, thereby driving the circuit breaker to switch between the manual working mode and the automatic working mode; the first outgoing line hole, the first wire removal hole, and the switching operation element 7a are arranged side by side in sequence from left to right on the upper side of the circuit breaker operation interface 1i, and the second wire removal hole and the second outgoing line hole are arranged side by side in sequence from left to right on the lower side of the circuit breaker operation interface 1i.

[0129] It should be noted that the switching operation element 7a is not limited to a knob, and can also be a button or a sliding dial. Specifically, if the switching operation element 7a is a button, then by pressing / pulling the button, the switching transmission element 8a is driven to move towards or away from the switching switch element 9a, and the switching switch element 8a triggers or releases the switching switch element 9a; or, if the switching operation element 7a is a sliding dial, it is slidably arranged on the circuit breaker operation interface 1i of the circuit breaker housing 1, and by sliding the sliding dial, the switching transmission element 8a is driven to move towards or away from the switching switch element 9a, and the switching switch element 8a triggers or releases the switching switch element 9a.

[0130] Preferably, as Figure 16As shown, the knob driving part 72a includes a knob driving inclined surface 720a which is in driving cooperation with the switching transmission element 8a. The knob driving inclined surface 720a slopes gradually from the end connected to the knob connecting part 70a towards the end close to the switching switch element 9a. Further, the knob driving inclined surface 720a is a spiral inclined surface that slopes from the upper end to the lower end.

[0131] It should be noted that the knob driving part 72a may not be provided with the knob driving inclined surface 720a, but instead be threadedly connected to the switching transmission element 8a. The switching transmission element 8a cannot rotate. By screwing the knob, the switching transmission element 8a can also be driven to move towards or away from the switching switch element 9a. Of course, there are also many other implementation manners for the switching operation element 7a, as long as it can drive the switching transmission element 8a to move towards or away from the switching switch element 9a, which will not be elaborated one by one here.

[0132] Preferably, as Figure 14 and 16 shown, the manual / automatic switching device further includes a transmission element return spring 10 for driving the switching transmission element 8a to reset.

[0133] Preferably, as Figure 16 shown, it is an embodiment of the switching transmission element 8a.

[0134] As Figure 16 shown, the switching transmission element 8a is a rod-shaped member, including a transmission element receiving part 80a, a transmission element spring limiting platform 82a, and a transmission element driving part 81a that are connected in sequence. The transmission element receiving part 80a is in driving cooperation with the knob driving part 720a, and the transmission element driving part 81a is in driving cooperation with the switching switch element 9A. Further, as Figure 14 and 16 shown, the transmission element return spring 10 is sleeved on the transmission element driving part 81a, with one end in limiting cooperation with the transmission element spring limiting platform 82a and the other end in limiting cooperation with the circuit breaker housing 1.

[0135] Preferably, as Figure 14As shown, the circuit breaker housing 1 further includes a transmission element assembly groove provided on one side of the button mechanism 2. The transmission element assembly groove includes an upper assembly groove section 103-1, a lower assembly groove section 103-2, and a tail section of the assembly groove that are connected in sequence. The width of the lower assembly groove section 103-2 is greater than the width of the upper assembly groove section 103-1 and the width of the lower assembly groove section 103-2 is greater than the width of the tail section of the assembly groove. A first step structure is formed at the connection between the lower assembly groove section 103-2 and the upper assembly groove section 103-1, and a second step structure is formed at the connection between the lower assembly groove section 103-2 and the tail section of the assembly groove. The driven part 80a of the transmission element is arranged in the middle of the upper assembly groove section 103-1, the transmission part 81a of the transmission element is arranged in the middle of the lower assembly groove section 103-2, the spring limiting platform 82a of the transmission element is in limiting cooperation with the first step structure, the return spring 10 of the transmission element is arranged in the middle of the lower assembly groove section 103-2, one end is in limiting cooperation with the spring limiting platform 82a of the transmission element, and the other end is in limiting cooperation with the second step structure. The free end of the transmission part 81a of the transmission element passes through the tail section of the assembly groove and is in limiting cooperation with the switching switch element 9A.

[0136] Specifically, as Figure 14 shown, the upper assembly groove section 103-1, the lower assembly groove section 103-2, and the tail section of the assembly groove are arranged in sequence from top to bottom and are connected in sequence; the entire transmission element assembly groove is located between the button mechanism 2 and the outgoing line terminal 881.

[0137] It should be noted that in this embodiment, the electric mechanism 3 directly drives the circuit breaker to close through the operating mechanism, and drives the circuit breaker to trip through the button mechanism 2. As other embodiments, the electric mechanism 3 can also directly drive the circuit breaker to trip and / or close through the operating mechanism, and drive the circuit breaker to trip and / or close through the button mechanism 2, which are all applicable to the manual-automatic switching device of the present invention.

[0138] Preferably, as Figure 1 、 17 -20 shows the fourth embodiment of the circuit breaker of the present invention, which is the 4th embodiment of the first type of circuit breaker.

[0139] Preferably, as Figure 1 、 17As shown in Figure 18, the circuit breaker includes a circuit breaker housing 1, and a button mechanism 2, an electric mechanism 3, an operating mechanism 5, a protection mechanism, an arc extinguishing system 7, a current sampling device 112, an incoming terminal 880 and an outgoing terminal 881 arranged in the circuit breaker housing 1; the button mechanism 2 drives the circuit breaker to close / open through the operating mechanism 5; the electric mechanism 3 drives the circuit breaker to close / open through the button mechanism 2 and / or the operating mechanism 5; the protection mechanism cooperates with the operating mechanism 5 to trigger the circuit breaker to trip; the incoming terminal 880 and the outgoing terminal 881 are respectively arranged at both ends of the circuit breaker housing 1. ; The operating mechanism 5 is arranged in the middle of the circuit breaker housing 1; The arc extinguishing system 7 and the protection mechanism are arranged side by side between the operating mechanism 5 and the incoming terminal 880; The electric mechanism 3 is arranged between the outgoing terminal 881 and the operating mechanism 5, and the electric mechanism 3 and the outgoing terminal 881 are arranged on the same side of the button mechanism 2; One end of the button mechanism 2 protrudes outside the end of the circuit breaker housing 1 provided with the outgoing terminal 881; The current sampling device 112 is arranged between the protection mechanism and the incoming terminal 880, and the two ends of the sampling device 112 are electrically connected to the protection mechanism and the incoming terminal 880 respectively. The circuit breaker of the present invention has a reasonable internal layout design and a compact layout between the components, which can effectively reduce the overall specifications of the circuit breaker and conform to the development trend of miniaturization of the circuit breaker; Moreover, the current sampling device 112 is arranged between the overload protection mechanism 110 or the short-circuit protection mechanism 6 arranged side by side with the arc extinguishing system 7 and the incoming terminal 880, which significantly improves the safety of the current sampling device 112 and facilitates the export of the signal of the current sampling device 112.

[0140] Preferably, the protection mechanism is a short-circuit protection mechanism 6 or an overload protection mechanism 110; when the circuit breaker includes both the short-circuit protection mechanism 6 and the overload protection mechanism 110, the protection mechanism is the short-circuit protection mechanism 6, the arc extinguishing system 7 and the short-circuit protection mechanism 6 are arranged side by side, the operating mechanism 5 and the overload protection mechanism 110 are arranged side by side in the middle of the circuit breaker housing 1, and the sampling device 112 is arranged between the short-circuit protection mechanism 6 and the incoming terminal 880; or, the protection mechanism is the overload protection mechanism 110, the arc extinguishing system 7 and the overload protection mechanism 110 are arranged side by side, the operating mechanism 5 and the short-circuit protection mechanism 6 are arranged side by side in the middle of the circuit breaker housing 1, and the sampling device 112 is arranged between the overload protection mechanism 110 and the incoming terminal 880.

[0141] Preferably, Figure 17In the preferred embodiment shown, the operating mechanism 5 and the overload protection mechanism 110 are arranged side by side in the middle of the circuit breaker housing 1. The arc extinguishing system 7 and the short-circuit protection mechanism 6 are arranged side by side. The overload protection mechanism 110 and the arc extinguishing system 7 are located on one side of the circuit breaker housing 1, and the operating mechanism 5 and the short-circuit protection mechanism 6 are located on the other side of the circuit breaker housing 1. The current sampling device 112 is arranged between the short-circuit protection mechanism 6 and the incoming line terminal 880. The incoming line terminal 880 includes an L-pole incoming line terminal, and the current sampling device 112 is connected in series between the short-circuit protection mechanism 6 and the L-pole incoming line terminal. Further, as Figure 17 shown, the circuit breaker housing 1 further includes a sampling device assembly groove 112a, and the two ends of the sampling device assembly groove 112a are respectively opposite to the L-pole incoming line terminal and the short-circuit protection mechanism 6.

[0142] Specifically, the short-circuit protection mechanism 6 of the present invention includes an electromagnetic tripping mechanism. When a short-circuit large current occurs, the electromagnetic force increases to trigger the tripping of the operating mechanism 5. The overload protection mechanism 110 includes a bimetal sheet. When overloaded, the bimetal sheet bends to trigger the unlocking of the latch of the operating mechanism 5 and the engagement of the latch of the trip, causing the operating mechanism 5 to trip. There is no need for a chip to participate in the detection, avoiding external interference to the chip and achieving reliable protection. However, in order to monitor the current, a corresponding current sampling device 112 is provided, which can output to an external monitoring device. The present invention arranges the current sampling device 112 in an area far from the core components of the circuit breaker, not only avoiding the influence on the core components of the circuit breaker, but also significantly improving the safety and reliability of the current sampling device 112.

[0143] Further, as Figure 17 and 18 shown, the circuit breaker of the present invention further includes a circuit board 111 connected to the electric mechanism 3. The button mechanism 2, the electric mechanism 3, the operating mechanism 5, the overload protection mechanism 110, the arc extinguishing system 7 and the current sampling device 112 are arranged on one side of the circuit board 111, and the bottom plate of the circuit breaker housing 1 is located on the other side of the circuit board 111. For the circuit breaker of the present invention, by arranging the circuit board 111 in the above layout, the installation space of the circuit board 111 can be significantly increased, and the size requirement for the circuit board 111 is reduced. On the one hand, the design and installation of the circuit board 111 are more convenient, and on the other hand, the circuit board 111 can also carry more functions.

[0144] Preferably, as Figure 19 and 20 shown, the circuit breaker further includes a circuit board slot 113 connected to the circuit board 111. The circuit board slot 113 and the incoming line terminal 880 are arranged at the same end of the circuit breaker housing 1. The incoming line terminal 880 includes an L-pole incoming line terminal and an N-pole incoming line terminal arranged side by side at intervals. The circuit board slot 113 is arranged between the two incoming line terminals 880, and the circuit board 111 obtains the working power supply and control signals through the circuit board slot 113.

[0145] Specifically, as Figure 17 shown in the direction, the incoming line terminal 880 and the outgoing line terminal 881 are respectively arranged at the upper end and the lower end of the circuit breaker housing 1. The two incoming line terminals 880 are respectively an N-pole incoming line terminal and an L-pole incoming line terminal arranged side by side left and right; the outgoing line terminal 881 and the button mechanism 2 are arranged side by side left and right. The electric mechanism 3 is arranged below the outgoing line terminal 881 and above the operating mechanism 5, and the electric mechanism 3 and the button mechanism 2 are arranged side by side left and right; the overload protection mechanism 110 and the operating mechanism 5 are arranged side by side left and right in the circuit breaker housing 1; the arc extinguishing system 7 and the short-circuit protection mechanism 6 are arranged side by side left and right below the overload protection mechanism 110 and the operating mechanism 5; the current sampling device 112 is arranged between the short-circuit protection mechanism 6 and the incoming line terminal 880, on the right side of the circuit breaker housing 1; the sampling device assembly groove 112 is arranged between the short-circuit protection mechanism 6 and the L-pole incoming line terminal, with the upper end opposite to the short-circuit protection mechanism 6 and the lower end opposite to the L-pole incoming line terminal. It should be noted that as another embodiment, the overload protection mechanism 110 and the short-circuit protection mechanism 6 can be interchanged, and then the current sampling device 112 is arranged between the overload protection mechanism 110 and the incoming line terminal 880.

[0146] It should be noted that in this embodiment, the electric mechanism 3 directly drives the circuit breaker to close through the operating mechanism, and drives the circuit breaker to trip through the button mechanism 2. As other embodiments, the electric mechanism 3 can also directly drive the circuit breaker to trip and / or close through the operating mechanism, and drive the circuit breaker to trip and / or close through the button mechanism 2, which are all applicable to the layout structure of this embodiment. In addition, the electric mechanism 3 in the fifth embodiment of the present invention controls the motor by controlling the power supply of the motor 301, and other schemes that control the motor 301 through a control chip and obtain the closing position, tripping position and the initial position between the closing position and the tripping position of the trigger gear through multiple position sensors (microswitches) are all applicable to the layout structure of this embodiment.

[0147] Preferably, as Figure 21 、 23a shown in FIGS. 23a, 23b, etc., is the fifth embodiment of the circuit breaker of the present invention and the first embodiment of the second circuit breaker.

[0148] As Figure 21 、 23a, as shown in Fig. 23b, the circuit breaker of the present invention includes an electric mechanism 3 and an operating mechanism 5, and the electric mechanism 3 and the operating mechanism 5 are driven and coordinated; the electric mechanism 3 includes a motor 301 and a gear set, the gear set is drivingly connected to the motor 301, and the gear set includes a trigger gear; the circuit breaker further includes a switching device, a closing circuit, and a tripping circuit. The switching device includes a first switching member 9B that is drivingly coordinated with the trigger gear. The output end of the first switching member 9B is respectively connected to the closing circuit and the tripping circuit, and is used to connect the closing circuit while disconnecting the tripping circuit, or disconnect the closing circuit while connecting the tripping circuit. The motor 301 is respectively connected in series in the closing circuit and the tripping circuit; when the circuit breaker is in the tripping state, the first switching member 9B connects the closing circuit while disconnecting the tripping circuit, automatic tripping cannot be triggered, and when a closing voltage signal is applied across the closing circuit externally or internally of the circuit breaker to trigger automatic closing, the motor 301 is powered on and rotates. After the electric mechanism 3 drives the circuit breaker to close through the operating mechanism 5, the trigger gear drives the first switching member 9B to disconnect the closing circuit and connect the tripping circuit. At this time, applying a closing power supply across the closing circuit cannot make the motor 301 rotate again, and the circuit breaker is in the closing state;

[0149] When the circuit breaker is in the closing state, the first switching member 9B disconnects the closing circuit and connects the tripping circuit, automatic closing cannot be triggered, and when a tripping voltage signal is applied across the tripping circuit externally or internally of the circuit breaker to trigger automatic tripping, the motor 301 is driven. After the electric mechanism 3 drives the circuit breaker to trip through the operating mechanism 5, the trigger gear drives the first switching member 9B to disconnect the tripping circuit and connect the closing circuit, and the motor 301 stops rotating.

[0150] Further, as Figure 23a and 23b shown, the first switching member 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 to the closing circuit and the tripping circuit, or the normally closed contact b0 and the normally open contact b1 are respectively connected to the tripping circuit and the closing circuit. As Figure 23a and 23b shown in the embodiment, the normally closed contact b0 is connected in series with the closing circuit, and the normally open contact b1 is connected in series with the tripping circuit; when the common contact b3 is conducted with the normally closed contact b0, the closing circuit is connected, and when the common contact b3 is conducted with the normally open contact b1, the tripping circuit is connected.

[0151] Further, as Figure 23a and 23bAs shown, the motor 301 is a DC motor. The closing circuit includes diode D3 and diode D2. 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 the motor 301, and the negative terminal of the motor 301 is connected to the anode of diode D2. The opening circuit includes diode D1 and diode D4. The normally open contact b1 is connected to the cathode of diode D1, the anode of diode D1 is connected to the negative terminal, and the positive terminal is connected to the cathode of diode D4. The common contact b3 is connected to the power supply terminal E0, and the cathodes of diode D2 and the anode of diode D4 are both connected to the power supply terminal E1.

[0152] Preferably, as Figure 23a and 23b shown, the closing voltage signal and the opening voltage signal are power supply voltage signals with opposite directions and are the working power supply for supplying power to the motor 301. Further, when the circuit breaker closes or opens, the motor 301 always rotates in the same direction.

[0153] Preferably, as Figure 21 shown, the first switch 9B is a micro switch and includes a first driving rod that is drivingly engaged with the trigger gear. Further, as Figure 21 shown, the trigger gear is the third driving gear 305-3 of the driving gear member 305 and includes a switch driving platform 305-4 provided on one side of the third driving gear 305-3. After the electric mechanism 3 drives the circuit breaker to close through the operating mechanism 5, the third driving gear 305-3 also rotates and drives the switch driving platform 305-4 to press against the first driving rod, thereby disconnecting the closing circuit of the first switch 9B and connecting the opening circuit. After the electric mechanism 3 drives the circuit breaker to open through the operating mechanism 5, the third driving gear 305-3 also rotates and drives the switch driving platform 305-4 to release the first driving rod, thereby disconnecting the opening circuit of the first switch 9B and connecting the closing circuit. Obviously, the trigger gear is not limited to the driving gear member 305 and can also be the first transmission gear member 303 or the second transmission gear member 304 or other gears.

[0154] Further, as Figure 17 、 18 and 21 shown, the first switch element 9B is disposed between the first driving gear 305-3 and the circuit board 111 and is connected to the circuit board 111.

[0155] Preferably, as Figure 21As shown, the circuit breaker further includes a manual operation component. The manual operation component and the electric mechanism 3 are respectively drivingly connected to the operating mechanism 5. The manual operation component drives the circuit breaker to close / open through the operating mechanism 5. The electric mechanism 3 further includes a driving gear member 305 and a driven gear 306 that are respectively pivotally arranged. The driving gear member 305 is a trigger gear. The driving gear member 305 is drivingly engaged with the driven gear 306. The driven gear 306 is coaxially arranged with and drivingly engaged with the transmission member 501. The driving gear member 305 rotates from the first initial position in the first direction to engage with the driven gear 306. The driving gear member 305 continues to rotate and drives the transmission member 501 to rotate in the second direction through the driven gear 306. After the circuit breaker is closed, the driving gear member 305 continues to rotate to the intermediate position to drive the first switch member 9B to disconnect the closing circuit and connect the opening circuit and disengage from the driven gear 306. The driving gear member 305 rotates from the intermediate position in the first direction and drives the manual operation component to act. The manual operation component drives the transmission member 501 to rotate in the first direction. After the circuit breaker is opened, the driving gear member 305 continues to rotate to the first initial position to drive the first switch member 9B to disconnect the opening circuit and connect the closing circuit. Further, as Figure 21 shown, in this embodiment, the manual operation component is the button mechanism 2, and the circuit breaker is a plug-in circuit breaker.

[0156] As other embodiments, the manual operation component can also be a handle, and the circuit breaker can be an ordinary small circuit breaker. When the circuit breaker does not have a manual operation component and only has the electric mechanism 3 for automatic closing, the electric mechanism 3 drives the circuit breaker to automatically open / close through the operating mechanism. When the circuit breaker has the electric mechanism 3 at the same time, the electric mechanism 3 can directly drive the circuit breaker to automatically open / close through the operating mechanism, or can achieve automatic opening / close by driving the manual operation component.

[0157] Specifically, as Figure 23a shown, when the circuit breaker is in the open state, the first switch element 9B connects the closing circuit and disconnects the opening circuit at the same time. During automatic closing, the closing voltage signal (the power supply terminal E0 is connected to the positive electrode, and the power supply terminal E1 is connected to the negative electrode) outside or inside the circuit breaker is applied across the first switch element 9B and the closing circuit (the current flows through the power supply terminal E0, the common contact b3, the normally closed contact b0, the diode D3, the motor 301, the diode D2, and the power supply terminal E1 in sequence). The motor 301 rotates forward and drives the driving gear member 305 to rotate from the first initial position to the intermediate position. The circuit breaker is closed. At the same time, the switch driving platform 305-4 of the third driving gear 305-3 presses the first driving rod of the first switch element 9B, so that the first switch element 9B disconnects the closing circuit and connects the opening circuit (as Figure 23bAs shown, the closing voltage signal cannot pass through the opening circuit (due to the one-way conduction function of diodes D1 and D4) at this time, so the motor 301 stops rotating; as Figure 23b shown, when the circuit breaker is in the closed state, the first switching element 9B connects the opening circuit and disconnects the closing circuit at the same time. When automatically opening, the opening voltage signal outside or inside the circuit breaker (the power supply terminal E0 is connected to the negative pole, and the power supply terminal E1 is connected to the positive pole) is applied across the first switching element 9B and the opening circuit (the current flows through the power supply terminal E1, diode D4, motor 301, diode D1, normally open contact b1, common contact b0, and power supply terminal E0 in sequence). The motor 301 rotates forward and drives the driving gear member 305 to rotate from the middle position to the first initial position. The circuit breaker completes the opening operation. At the same time, the switch driving platform 305-4 of the third driving gear 305-3 releases the first driving rod of the first switching element 9B, so that the first switching element 9B disconnects the opening circuit and connects the closing circuit (as Figure 23a shown). At this time, the opening voltage signal cannot pass through the closing circuit (due to the one-way conduction function of diodes D2 and D3), so the motor 301 stops rotating. Therefore, for the circuit breaker of the present invention, when performing the closing / opening operation, only the current direction or voltage direction of the working power supply of the motor 301 needs to be switched. Controlling the power supply of the motor 301 is simple and convenient, without chip control, avoiding interference and influence on the chip in a specific environment.

[0158] Furthermore, this embodiment can be combined with the third embodiment of the present invention. The circuit breaker further includes a manual-automatic switching device arranged in the circuit breaker housing 1. The manual-automatic switching device includes a switching operation element 7a and a switching switch element 9A. The switching operation element 7a is arranged on the operation interface 1i of the circuit breaker, on one side of the button assembly hole and is movably connected to the circuit breaker housing 1. The switching switch element 9A is connected in series in the closing circuit and the opening circuit. When the switching switch element 9A is disconnected, it is in the manual working mode, and the motor 301 cannot be powered on and cannot be automatically switched on and off. When the switching switch element 9A is closed, it is in the automatic working mode, and at the same time, it can be manually switched on and off and automatically switched on and off. The switching switch element 9A is a micro switch.

[0159] Preferably, as Figure 21 、 25a 、25b shown, it is the sixth embodiment of the circuit breaker of the present invention and the second embodiment of the second type of circuit breaker.

[0160] As Figure 25a and 25bAs shown, the difference between the circuit breaker of this embodiment and that of the fifth embodiment lies in that: the closing circuit includes a power supply terminal E1, a normally closed contact b0 is connected to the positive terminal of the motor 301, and the negative terminal of the motor 301 is connected to the power supply terminal E1; the opening circuit includes a power supply terminal E2, a normally open contact b1 is connected to the negative terminal of the motor 301, and the positive terminal of the motor 301 is connected to the power supply terminal E2; the common contact b0 is connected to the power supply terminal E0.

[0161] Specifically, as Figure 25a shown, when the circuit breaker is in the open state and the first switching element 9B closes the closing circuit, a closing voltage signal (the power supply terminal E0 is connected to the positive electrode and the power supply terminal E1 is connected to the negative electrode) is applied across the first switching element 9B and the closing circuit (the current flows through the power supply terminal E0, the common contact b3, the normally closed contact b0, the motor 301, and the power supply terminal E1 in sequence), the motor 301 rotates forward and drives the driving gear member 305 to rotate from the first initial position to the intermediate position, the circuit breaker is closed, and at the same time, the switch driving platform 305-4 of the third driving gear 305-3 presses against the first driving rod of the first switching element 9B, causing the first switching element 9B to disconnect the closing circuit and connect the opening circuit (as Figure 25b shown), then the closing voltage signal cannot pass through the opening circuit (since the power supply terminal E2 is not conducting, and even if it conducts, the motor 301 will be short-circuited), so the motor 301 stops rotating; as Figure 25b shown, when the circuit breaker is in the closed state and the first switching element 9B closes the opening circuit, an opening voltage signal (the power supply terminal E0 is connected to the negative electrode and the power supply terminal E2 is connected to the positive electrode) is applied across the first switching element 9B and the opening circuit (the current flows through the power supply terminal E2, the motor 301, the normally open contact b1, the common contact b3, and the power supply terminal E0 in sequence), the motor 301 rotates forward and drives the driving gear member 305 to rotate from the intermediate position to the first initial position, the circuit breaker is opened, and at the same time, the switch driving platform 305-4 of the third driving gear 305-3 releases the first driving rod of the first switching element 9B, causing the first switching element 9B to disconnect the opening circuit and connect the closing circuit (as Figure 25a shown), then the opening voltage signal cannot pass through the closing circuit (since the power supply terminal E1 is not conducting, and even if the power supply terminal E1 conducts, the motor 301 will be short-circuited), so the motor 301 stops rotating.

[0162] Preferably, as Figure 21 、 22 、24a-24d shown, it is the seventh embodiment of the circuit breaker of the present invention and the first embodiment of the third type of circuit breaker.

[0163] As Figure 21 、 22As shown in Figs. 24a - 24d, the difference between the circuit breaker of this embodiment and that of the fifth embodiment lies in that: the circuit breaker of the present invention further includes a manual operation component, a closing auxiliary circuit, and a tripping auxiliary circuit; the switching device further includes a second switching member 9C which is drivingly engaged with the manual operation component or the operating mechanism 5, and the output terminals of the second switching member 9C are respectively connected to the closing auxiliary circuit and the tripping auxiliary circuit, and are used for connecting the closing auxiliary circuit while disconnecting the tripping auxiliary circuit, or disconnecting the closing auxiliary circuit while connecting the tripping auxiliary circuit; the manual operation component is drivingly connected to the operating mechanism 5; the closing auxiliary circuit and the tripping auxiliary circuit are respectively connected to the two input terminals of the motor 301; the input terminal of the second switching member 9C is connected to the input terminal of the first switching member 9B.

[0164] As Figure 24a shown, when the circuit breaker is in the tripping state, the first switching member 9B closes the closing circuit and the second switching member 9C closes the closing auxiliary circuit, a closing voltage signal is applied across the first switching member 9B and the closing circuit during automatic closing, and after the electric mechanism 3 drives the circuit breaker to close through the operating mechanism 5, as Figure 24b shown, the trigger gear drives the first switching member 9B to disconnect the closing circuit and connect the tripping circuit. During closing, the manual operation component and the operating mechanism 5 move to the closing position accordingly, and at the same time, the movement of the manual operation component or the operating mechanism 5 during closing drives the second switching member 9C to disconnect the closing auxiliary circuit and connect the tripping auxiliary circuit.

[0165] As Figure 24b shown, when the circuit breaker is in the closed state, the first switching member 9B closes the tripping circuit and the second switching member 9C closes the tripping auxiliary circuit, a tripping voltage signal is applied across the first switching member 9B and the tripping circuit during automatic tripping, and after the electric mechanism 3 drives the circuit breaker to trip through the operating mechanism 5, as Figure 24a shown, the trigger gear drives the first switching member 9B to disconnect the tripping circuit and connect the closing circuit. During tripping, the manual operation component and the operating mechanism 5 move to the tripping position accordingly, and at the same time, the movement of the manual operation component or the operating mechanism 5 during tripping drives the second switching member 9C to disconnect the tripping auxiliary circuit and connect the closing auxiliary circuit.

[0166] When the circuit breaker is in the closed state, when the first switching member 9B closes the tripping circuit and the second switching member 9C closes the tripping auxiliary circuit, the circuit breaker is tripped by driving the manual operation component. The movement of the manual operation component or the operating mechanism 5 during tripping drives the second switching member 9C to disconnect the tripping auxiliary circuit and connect the closing auxiliary circuit, and enters the state as Figure 24c shown; at this time, automatic closing is performed, a closing voltage signal is applied across the first switching member 9B and the tripping circuit, the motor 301 drives the trigger gear to rotate, and the trigger gear drives the first switching member 9B to disconnect the tripping circuit and connect the closing circuit, and enters the state as Figure 24aIn the shown state, then the electric mechanism 3 drives the circuit breaker to close through the operating mechanism 5, triggering the gear to drive the first switch member 9B to disconnect the closing circuit and connect the opening circuit. At the same time, the manual operation assembly or the operating mechanism 5 drives the second switch member 9C to disconnect the closing auxiliary circuit and connect the opening auxiliary circuit, entering the state as shown in Figure 24b the shown state.

[0167] When the circuit breaker is in the open state, the first switch member 9B connects the closing circuit, and the second switch member 9C connects the closing auxiliary circuit. After driving the circuit breaker to close through the manual operation assembly, the action of the manual operation assembly or the operating mechanism 5 during closing drives the second switch member 9C to disconnect the closing auxiliary circuit and connect the opening auxiliary circuit, entering the state as shown in Figure 24d the shown state; A tripping voltage signal is applied across the first switch member 9B and the closing circuit, and the motor 301 drives the trigger gear to rotate. The trigger gear drives the first switch member 9B to disconnect the closing circuit and connect the opening circuit, entering the state as shown in Figure 24b the shown state. Then the electric mechanism 3 drives the circuit breaker to open through the operating mechanism 5, the trigger gear drives the first switch member 9B to disconnect the opening circuit and connect the closing circuit, and at the same time, the manual operation assembly or the operating mechanism 5 drives the second switch member 9C to disconnect the opening auxiliary circuit and connect the closing auxiliary circuit, entering the state as shown in Figure 24a the shown state.

[0168] In this embodiment, the manual operation assembly is the button mechanism 2, and the circuit breaker is a plug-in circuit breaker. As other embodiments, the manual operation assembly can also be a handle, and the circuit breaker can be an ordinary small circuit breaker.

[0169] The first switch member 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 to the closing circuit and the opening circuit, or the normally closed contact b0 and the normally open contact b1 are respectively connected to the opening circuit and the closing circuit;

[0170] The second switch member 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 to the closing auxiliary circuit and the opening auxiliary circuit, or the normally closed contact c0 and the normally open contact c1 are respectively connected to the opening auxiliary circuit and the closing auxiliary circuit. As shown in the specific embodiment of Figure 24a-24d the figure, the normally closed contact c0 is connected to the closing auxiliary circuit, the normally open contact c1 is connected to the opening auxiliary circuit, and the common contact c3 is connected to the common contact b3; When the common contact c3 is conducted with the normally closed contact c0, the closing auxiliary circuit is connected, and when the common contact c3 is conducted with the normally open contact, the opening auxiliary circuit is connected.

[0171] Preferably, as shown in Figure 24a-24dAs shown, the motor 301 is a DC motor. The closing circuit includes a diode D3 and a power supply terminal E1. The normally closed contact b0 is connected to the anode of the diode D3. The cathode of the diode D3 is connected to the positive terminal of the motor 301. The negative terminal of the motor 301 is connected to the power supply terminal E1. The opening circuit includes a diode D1 and a power supply terminal E2. The normally open contact b1 is connected to the cathode of the diode D1. The cathode of the diode D1 is connected to the negative terminal of the motor 301. The positive terminal of the motor 301 is connected to the power supply terminal E2. The closing auxiliary circuit includes a diode D6. The normally closed contact c0 is connected to the anode of the diode D6. The cathode of the diode D6 is connected to the positive terminal. The opening auxiliary circuit includes a diode D5. The normally open contact c1 is connected to the cathode of the diode D5. The anode of the diode D5 is connected to the negative terminal. The common contact b3 is connected to the common contact c3.

[0172] Preferably, as Figure 22 shown, the second switch member 9C is disposed on one side of the connecting member 204 of the button mechanism 2 and is in driving cooperation therewith. Further, as Figure 22 shown, the second switch member 9C is a micro switch and is connected to the circuit board 111.

[0173] Specifically, as Figure 24a shown, when the circuit breaker is in the open state, the first switch member 9B closes the closing circuit and the second switch member 9C closes the closing auxiliary circuit, and a closing voltage signal (the power supply terminal E0 is connected to the positive electrode and the power supply terminal E1 is connected to the negative electrode) is applied across the first switch member 9B and the closing circuit (the current passes through the power supply terminal E0, the common contact b3, the normally closed contact b0, the diode D3 in sequence, and the power supply terminal E0, the common contact c3, the normally closed contact c0 in sequence, flows into the motor 301, and flows out of the motor 301 through the diode D2 and the power supply terminal E1 in sequence), the motor 301 rotates forward and drives the driving gear member 305 to rotate from the first initial position to the intermediate position, the circuit breaker completes closing, and at the same time, the switch driving platform 305-4 of the third driving gear 305-3 presses the first driving rod of the first switch element 9B, so that the first switch element 9B disconnects the closing circuit and connects the opening circuit; meanwhile, when the circuit breaker completes closing, the transmission member 501 of the operating mechanism 5 drives the connecting member 204 to act through the second link 203, and the connecting member 204 presses the second driving rod of the second switch element 9C, so that the second switch element 9C disconnects the closing auxiliary circuit and connects the opening auxiliary circuit, and enters the state as shown in Figure 24b shown.

[0174] As Figure 24bAs shown, when the circuit breaker is in the closed state, the first switch member 9B connects the opening circuit and the second switch member 9C connects the opening auxiliary circuit. The opening voltage signal (the power supply terminal E0 is connected to the negative electrode, and the power supply terminal E1 is connected to the positive electrode) is applied across the first switch member 9B and the closing circuit (the current flows into the motor 301 through the power supply terminal E1 and the diode D4 connected in sequence, and flows out of the motor 301 through the diode D1, normally open contact b1, common contact b3, power supply terminal E0 connected in sequence, and the diode D5, normally open contact c1, normally closed contact c3, power supply terminal E0 connected in sequence). The motor 301 rotates forward and drives the drive gear member 305 to rotate from the intermediate position to the first initial position, and the circuit breaker completes opening. At the same time, the switch driving platform 305-4 of the third drive gear 305-3 releases the first drive rod of the first switch element 9B, so that the first switch element 9B disconnects the opening circuit and connects the closing circuit; at the same time, when the circuit breaker completes opening, the transmission member 501 of the operating mechanism 5 drives the connecting member 204 to act through the second connecting rod 203, and the connecting member 204 releases the second drive rod of the second switch element 9C, so that the second switch element 9C disconnects the opening auxiliary circuit and connects the closing auxiliary circuit, and enters the state as shown in Figure 24a shown.

[0175] Referring to Figure 24b , when the circuit breaker is in the closed state, the first switch member 9B connects the opening circuit and the second switch member 9C connects the opening auxiliary circuit. After the circuit breaker is opened manually through the manual operation component, the second switch member 9C disconnects the opening auxiliary circuit and connects the closing auxiliary circuit, and enters the state as shown in Figure 24c shown. The closing voltage signal (the power supply terminal E0 is connected to the positive electrode, and the power supply terminal E1 is connected to the negative electrode) is applied across the first switch member 9B and the closing circuit (the current flows into the motor 301 through the power supply terminal E0, common contact c3, normally closed contact c0, diode D6 connected in sequence, and flows out of the motor 301 through the diode D2 and power supply terminal E1 connected in sequence). The motor 301 rotates forward and drives the drive gear member 305 to rotate from the intermediate position to the first initial position. At the same time, the switch driving platform 305-4 of the third drive gear 305-3 releases the first drive rod of the first switch element 9B, so that the first switch element 9B disconnects the opening circuit and connects the closing circuit, and enters the state as shown in Figure 24a shown; the motor 301 continues to rotate forward, and the drive gear member 305 rotates from the first initial position to the intermediate position. After the circuit breaker is closed, the third drive gear 305 of the drive gear member 305 drives the first switch member 9B to disconnect the closing circuit and connect the opening circuit; at the same time, when the circuit breaker is closed, the transmission member 501 of the operating mechanism 5 drives the connecting member 204 to act through the second connecting rod 203, and the connecting member 204 drives the second switch member 9C to disconnect the closing auxiliary circuit and connect the opening auxiliary circuit, and enters the state as shown in Figure 24b shown.

[0176] Referring to Figure 24a , when the circuit breaker is in the open state, the first switch member 9B turns on the closing circuit and the second switch member 9C turns on the closing auxiliary circuit. After the circuit breaker is closed by manually operating the assembly, the second switch member 9C disconnects the closing auxiliary circuit and turns on the opening auxiliary circuit, and enters the state as shown in Figure 24d . The opening voltage signal (the power supply terminal E0 is connected to the negative electrode, and the power supply terminal E1 is connected to the positive electrode) is applied across the first switch member 9B and the closing circuit (the current flows into the motor 301 through the power supply terminal E1 and the diode D4 connected in sequence, and flows out of the motor 301 through the diode D5, the normally open contact c1, the common contact c3, and the power supply terminal E1 connected in sequence). The motor 301 rotates forward and drives the drive gear member 305 to rotate from the first initial position to the intermediate position. At the same time, the switch drive platform 305-4 of the third drive gear 305-3 releases the first drive rod of the first switch element 9B, so that the first switch element 9B disconnects the closing circuit and turns on the opening circuit, and enters the state as shown in Figure 24b . The motor 301 continues to rotate forward, and the drive gear member 305 rotates from the intermediate position to the first initial position. After the circuit breaker opens, the third drive gear 305 of the drive gear member 305 drives the first switch member 9B to disconnect the opening circuit and turn on the closing circuit. At the same time, when the circuit breaker opens, the transmission member 501 of the operating mechanism 5 drives the connecting member 204 to act through the second connecting rod 203, and the connecting member 204 drives the second switch member 9C to disconnect the opening auxiliary circuit and turn on the closing auxiliary circuit, and enters the state as shown in Figure 24a .

[0177] Preferably, as shown in Figure 21 , 22 , 26a-26d, it is the eighth embodiment of the circuit breaker of the present invention and the second embodiment of the third circuit breaker.

[0178] As shown in Figure 26a-26d , the difference between the circuit breaker of this embodiment and that of the seventh embodiment is that: the closing circuit includes a diode D3 and a power supply terminal E1, the normally closed contact b0 is connected to the anode of the diode D3, the cathode of the diode D3 is connected to the positive terminal of the motor 301, and the negative terminal of the motor 301 is connected to the power supply terminal E1; the opening circuit includes a diode D1 and a power supply terminal E2, the normally open contact b1 is connected to the cathode of the diode D1, the cathode of the diode D1 is connected to the negative terminal of the motor 301, and the positive terminal of the motor 301 is connected to the power supply terminal E2;

[0179] The closing auxiliary circuit includes a diode D6, and the normally closed contact c0 is connected to the anode of the diode D6, and the cathode of the diode D6 is connected to the positive terminal; the opening auxiliary circuit includes a diode D5, and the normally open contact c1 is connected to the cathode of the diode D5, and the anode of the diode D5 is connected to the negative terminal.

[0180] The working principle of this embodiment is the same as that of the circuit breaker in the seventh embodiment. However, due to the changes in the structures of the closing circuit and the opening circuit, the loading positions of the closing voltage signal and the opening voltage signal and the current paths have changed, which can be deduced by those skilled in the art. Therefore, the working principle of the circuit breaker in this embodiment will not be elaborated herein.

[0181] The above content is a further detailed description of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention pertains, without departing from the concept of the present invention, several simple deductions or substitutions can be made, and all should be regarded as belonging to the protection scope of the present invention.

Claims

1. A circuit breaker, which comprises an operating mechanism (5) and an electric mechanism (3) for realizing automatic opening and closing; the electric mechanism (3) comprises a motor (301) and a gear set, the gear set is drivingly connected to the motor (301), and the gear set comprises a trigger gear; characterized in that: The circuit breaker further comprises a switching device, a closing circuit and a tripping circuit; the switching device comprises a first switching member (9B) drivingly cooperating with the trigger gear, the output end of the first switching member (9B) is respectively connected to the closing circuit and the tripping circuit, and the motor (301) is respectively connected in series in the closing circuit and the tripping circuit; When the circuit breaker is in the tripping state, the first switching member (9B) closes the closing circuit and disconnects the tripping circuit at the same time, a closing voltage signal is applied across the closing circuit, after the electric mechanism (3) drives the circuit breaker to close, the trigger gear drives the first switching member (9B) to disconnect the closing circuit and connect the tripping circuit; When the circuit breaker is in the closing state, the first switching member (9B) closes the tripping circuit and disconnects the closing circuit at the same time, a tripping voltage signal is applied across the tripping circuit, after the electric mechanism (3) drives the circuit breaker to trip, the trigger gear drives the first switching member (9B) to disconnect the tripping circuit and connect the closing circuit.

2. The circuit breaker according to claim 1, characterized in that: The first switching member (9B) comprises 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 closing circuit and the tripping circuit, or the normally closed contact b0 and the normally open contact b1 are respectively connected in the tripping circuit and the closing circuit.

3. The circuit breaker according to claim 2, characterized in that: The motor (301) is a DC motor, the closing circuit comprises a diode D3 and a diode D2, the normally closed contact b0 is connected to the anode of the diode D3, the cathode of the diode D3 is connected to the positive terminal of the motor (301), the negative terminal of the motor (301) is connected to the anode of the diode D2; the tripping circuit comprises a diode D1 and a diode D4, the normally open contact b1 is connected to the cathode of the diode D1, the anode of the diode D1 is connected to the negative terminal, and the positive terminal is connected to the cathode of the diode D4; the common contact b3 is connected to the power supply terminal E0, and the cathodes of the diode D2 and the anode of the diode D4 are both connected to the power supply terminal E1.

4. The circuit breaker according to claim 2, wherein: The motor (301) is a DC motor, the closing circuit comprises a power supply terminal E1, the normally closed contact b0 is connected to the positive terminal of the motor (301), the negative terminal of the motor (301) is connected to the power supply terminal E1; the tripping circuit comprises a power supply terminal E2, the normally open contact b1 is connected to the negative terminal of the motor (301), the positive terminal of the motor (301) is connected to the power supply terminal E2; the common contact b0 is connected to the power supply terminal E0.

5. The circuit breaker according to claim 1, characterized in that: The circuit breaker further includes a manual operation component, a closing auxiliary circuit, and a tripping auxiliary circuit. The manual operation component drives the circuit breaker to close / trip through the operating mechanism (5); the switching device further includes a second switching element (9C) that is drivingly engaged with the manual operation component or the operating mechanism (5). The output ends of the second switching element (9C) are respectively connected to the closing auxiliary circuit and the tripping auxiliary circuit; the manual operation component is drivingly connected to the operating mechanism (5); the closing auxiliary circuit and the tripping auxiliary circuit are respectively connected to the two input ends of the motor (301); the input end of the second switching element (9C) is connected to the input end of the first switching element (9B); When the circuit breaker is in the tripping state, the first switching element (9B) closes the closing circuit and the second switching element (9C) closes the closing auxiliary circuit, a power supply is applied across the first switching element (9B) and the closing circuit. After the electric mechanism (3) drives the circuit breaker to close, the trigger gear drives the first switching element (9B) to disconnect the closing circuit and connect the tripping circuit. At the same time, the action of the manual operation component or the operating mechanism (5) during closing drives the second switching element (9C) to disconnect the closing auxiliary circuit and connect the tripping auxiliary circuit; When the circuit breaker is in the closed state, the first switching element (9B) closes the tripping circuit and the second switching element (9C) closes the tripping auxiliary circuit, a tripping voltage signal is applied across the first switching element (9B) and the tripping circuit. After the electric mechanism (3) drives the circuit breaker to trip, the trigger gear drives the first switching element (9B) to disconnect the tripping circuit and connect the closing circuit. At the same time, the action of the manual operation component or the operating mechanism (5) during tripping drives the second switching element (9C) to disconnect the tripping auxiliary circuit and connect the closing auxiliary circuit; When the circuit breaker is in the closed state, the first switching element (9B) closes the tripping circuit, the second switching element (9C) closes the tripping auxiliary circuit. After the circuit breaker is tripped by driving the manual operation component, the action of the manual operation component or the operating mechanism (5) during tripping drives the second switching element (9C) to disconnect the tripping auxiliary circuit and connect the closing auxiliary circuit; a closing voltage signal is applied across the first switching element (9B) and the tripping circuit, the motor (301) drives the trigger gear to rotate, the trigger gear drives the first switching element (9B) to disconnect the tripping circuit and connect the closing circuit, then the electric mechanism (3) drives the circuit breaker to close, the trigger gear drives the first switching element (9B) to disconnect the closing circuit and connect the tripping circuit. At the same time, the manual operation component or the operating mechanism (5) drives the second switching element (9C) to disconnect the closing auxiliary circuit and connect the tripping auxiliary circuit; When the circuit breaker is in the open state, the first switch member (9B) closes the closing circuit, and the second switch member (9C) closes the closing auxiliary circuit. After the circuit breaker is closed by driving the manual operation assembly, the action of the manual operation assembly or the operating mechanism (5) during closing drives the second switch member (9C) to disconnect the closing auxiliary circuit and connect the opening auxiliary circuit; a tripping voltage signal is applied across the first switch member (9B) and the closing circuit, the motor (301) drives the trigger gear to rotate, the trigger gear drives the first switch member (9B) to disconnect the closing circuit and connect the opening circuit, then the electric mechanism (3) drives the circuit breaker to trip, the trigger gear drives the first switch member (9B) to disconnect the opening circuit and connect the closing circuit, and at the same time the manual operation assembly or the operating mechanism (5) drives the second switch member (9C) to disconnect the opening auxiliary circuit and connect the closing auxiliary circuit.

6. The circuit breaker according to claim 5, characterized in that: The first switch member (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 to the closing circuit and the opening circuit, or the normally closed contact b0 and the normally open contact b1 are respectively connected to the opening circuit and the closing circuit; The second switch member (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 to the closing auxiliary circuit and the opening auxiliary circuit, or the normally closed contact c0 and the normally open contact c1 are respectively connected to the opening auxiliary circuit and the closing auxiliary circuit.

7. The circuit breaker according to claim 6, wherein: The closing circuit includes a diode D3 and a diode D2. The normally closed contact b0 is connected to the anode of the diode D3, the cathode of the diode D3 is connected to the positive terminal of the motor (301), and the negative terminal of the motor (301) is connected to the anode of the diode D2; the opening circuit includes a diode D1 and a diode D4. The normally open contact b1 is connected to the cathode of the diode D1, the anode of the diode D1 is connected to the negative terminal, and the positive terminal is connected to the cathode of the diode D4; the common contact b3 is connected to the power supply terminal E0, and the cathodes of the diode D2 and the anode of the diode D4 are both connected to the power supply terminal E1; The closing auxiliary circuit includes a diode D6. The normally closed contact c0 is connected to the anode of the diode D6, and the cathode of the diode D6 is connected to the positive terminal; the opening auxiliary circuit includes a diode D5. The normally open contact c1 is connected to the cathode of the diode D5, and the anode of the diode D5 is connected to the negative terminal.

8. The circuit breaker according to claim 6, characterized in that: The closing circuit includes a diode D3 and a power supply terminal E1. The normally closed contact b0 is connected to the anode of the diode D3, the cathode of the diode D3 is connected to the positive terminal of the motor (301), and the negative terminal of the motor (301) is connected to the power supply terminal E1; the opening circuit includes a diode D1 and a power supply terminal E2. The normally open contact b1 is connected to the cathode of the diode D1, the cathode of the diode D1 is connected to the negative terminal of the motor (301), and the positive terminal of the motor (301) is connected to the power supply terminal E2; The closing auxiliary circuit includes a diode D6. The normally closed contact c0 is connected to the anode of the diode D6, and the cathode of the diode D6 is connected to the positive terminal. The opening auxiliary circuit includes a diode D5. The normally open contact c1 is connected to the cathode of the diode D5, and the anode of the diode D5 is connected to the negative terminal.

9. The circuit breaker according to claim 1 or 5, characterized in that: The closing voltage signal and the opening voltage signal are the working power supplies for supplying power to the motor (301).

10. The circuit breaker according to claim 1 or 5, characterized in that: The rotation direction of the trigger gear is always the same direction; the voltage directions of the closing voltage signal and the opening voltage signal are opposite.

11. The circuit breaker according to claim 1 or 5, characterized in that: The circuit breaker further includes an operating mechanism (5) and a manual operation component. The manual operation component and the electric mechanism (3) are respectively drivingly connected to the operating mechanism (5). The operating mechanism (5) includes a pivotally arranged transmission member (501). The electric mechanism (3) further includes a driving gear member (305) and a driven gear (306) that are respectively pivotally arranged. The driving gear member (305) is a trigger gear. The driving gear member (305) is drivingly engaged with the driven gear (306). The driven gear (306) is coaxially arranged and drivingly engaged with the transmission member (501). The manual operation component is drivingly engaged with the second switch member (9C) of the switching device. The driving gear member (305) rotates from the first initial position in the first direction to engage with the driven gear (306). The driving gear member (305) continues to rotate and drives the transmission member (501) to rotate in the second direction through the driven gear (306) to close the circuit breaker. After the circuit breaker is closed, the driving gear member (305) continues to rotate to the intermediate position to drive the first switch member (9B) to disconnect the closing circuit and connect the opening circuit and disengage from the driven gear (306). The driving gear member (305) rotates from the intermediate position in the first direction and drives the manual operation component to act. The manual operation component drives the transmission member (501) to rotate in the first direction to open the circuit breaker. After the circuit breaker is opened, the driving gear member (305) continues to rotate to the first initial position to drive the first switch member (9B) to disconnect the opening circuit and connect the closing circuit.

12. The circuit breaker according to claim 5, wherein: The circuit breaker further includes a circuit breaker housing (1). The manual operation component is a button mechanism (2), which includes a button member (201), a first link (202), a connecting member (204), and a second link (203) that are sequentially drivingly connected. The second link (203) is also drivingly connected to the transmission member (501). The button member (201) and the connecting member (204) are respectively slidably arranged on the circuit breaker housing (1). Press / pull the button member (201), and drive the operating mechanism (5) to act through the sequentially connected first link (202), connecting member (204), and second link (203) to close / open the circuit breaker. The connecting member (204) is drivingly engaged with the second switch member (9C).

13. The circuit breaker according to claim 12, characterized in that: The circuit breaker further includes a locking mechanism (4). One end of the locking mechanism (4) is the driven end of the locking mechanism, which protrudes outside the circuit breaker housing (1). The other end is the mating end of the locking mechanism. The mating end of the locking mechanism (4) cooperates with the button member (201) or the first link (202).

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