circuit breaker

Abstract

The application relates to the field of low-voltage electrical apparatus, in particular to a circuit breaker which comprises a circuit breaker shell, a button mechanism, an electric mechanism and an operating mechanism arranged in the circuit breaker shell; the button mechanism drives the circuit breaker to close and open through the operating mechanism; the operating mechanism comprises a transmission part which is pivotally arranged on the circuit breaker shell and connected with the button mechanism driving; the electric mechanism drives the transmission part to rotate to make the circuit breaker close, and drives the transmission part to reversely rotate to make the circuit breaker open through the button mechanism; the circuit breaker is simple in structure and reliable in action.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of low-voltage electrical apparatus, in particular to a circuit breaker. BACKGROUND

[0002] The existing plug-in circuit breaker has the following problems:

[0003] I. The existing circuit breaker electric mechanism realizes automatic closing through driving handle mechanism, and realizes automatic opening through driving handle mechanism or through driving operating mechanism lock catch, the corresponding matching mechanism is easy to wear, and in order to realize automatic opening and closing and manual opening and closing without interference, the structure is relatively complex. Moreover, the electric mechanism of the existing circuit breaker, the motor control is processed through the position sensor and the chip, the position sensor transmits the closing and opening position of the circuit breaker to the chip, the chip controls the motor to rotate or reverse to realize closing, opening and returning to the initial position (i.e. without affecting the manual opening and closing position of the circuit breaker), the chip is easy to be disturbed by the outside, resulting in unreliable position detection, affecting the reliability of the circuit breaker action.

[0004] II. The existing circuit breaker, its electric mechanism relies on gear hard transmission, after long time use, the structure is easy to wear, which often leads to transmission out of position, which is manifested as the circuit breaker closing or opening out of position.

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

[0006] IV. The existing circuit breaker, its overall space size is too large, which does not meet the trend and requirement of miniaturization development of the circuit breaker.

[0007] V. The existing circuit breaker, the control of the electric motor of the electric mechanism often needs complex physical structure and circuit to realize, which leads to complex overall structure of the circuit breaker and poor reliability. SUMMARY

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

[0009] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0010] A circuit breaker comprises a circuit breaker housing 1, a button mechanism 2, an electric mechanism 3 and an operating mechanism 5 arranged in the circuit breaker housing 1; the button mechanism 2 drives the circuit breaker to close / open through the operating mechanism 5, the operating mechanism 5 comprises a transmission member 501 pivotally arranged on the circuit breaker housing 1 and connected with the button mechanism 2 for driving, the electric mechanism 3 drives the transmission member 501 to rotate to close the circuit breaker, and the electric mechanism 3 drives the transmission member 501 to rotate reversely to open the circuit breaker through the button mechanism 2.

[0011] Preferably, the electric mechanism 3 comprises a driving gear member 305 and a driven gear 306 pivotally arranged on the circuit breaker housing 1 respectively, the driven gear 306 and the driving gear member 305 are coaxially arranged and drivingly matched.

[0012] Preferably, the driving gear member 305 drives the driven gear 306 to rotate in the same direction as the button mechanism 2 rotates to open when the circuit breaker is closed.

[0013] Preferably, when the circuit breaker is closed, the driving gear member 305 rotates from a first initial position to a 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 to a second direction through the driven gear 306 to close the circuit breaker, and the driving gear member 305 continues to rotate to an intermediate position and disengages from the driven gear 306 after the circuit breaker is closed; when the circuit breaker is opened, the driving gear member 305 rotates from the intermediate position to the first direction and drives the button mechanism 2 to operate, the button mechanism 2 drives the transmission member 501 to rotate to the first direction to open the circuit breaker, and the driving gear member 305 continues to rotate to the first initial position after the circuit breaker is opened.

[0014] Preferably, the driven gear 306 and the transmission member 501 are integrated or separate components.

[0015] Preferably, the driving gear member 305 comprises a first driving gear 305-1 and a driving tooth 305-20 drivingly matched with the driven gear 306 and the button mechanism 2 respectively; the first driving gear 305-1 and the driven gear 306 are both sector gears.

[0016] Preferably, the electric mechanism 3 comprises an electric motor 301, a transmission gear set, the driving gear member 305 and the driven gear 306 drivingly connected in sequence, the driving gear member 305 comprises a first driving gear 305-1, a second driving gear 305-2 and a third driving gear 305-3 coaxially linked and arranged in sequence, the third driving gear 305-3 is drivingly matched with the transmission gear set, and the second driving gear 305-2 is provided with a driving tooth 305-20 drivingly matched with the button mechanism 2.

[0017] Preferably, the button mechanism 2 comprises a button piece 201 and a connecting piece 204 respectively slidingly arranged on the circuit breaker housing 1, a first connecting rod 202 connected with the button piece 201 and the connecting piece 204 at two ends respectively, and a second connecting rod 203 connected with the connecting piece 204 and the transmission piece 501 at two ends respectively.

[0018] By pressing / pulling the button piece 201, the transmission piece 501 is driven to rotate in the second direction / first direction through the first connecting rod 202, the connecting piece 204 and the second connecting rod 203 connected in sequence, so as to close / open the circuit breaker.

[0019] Preferably, the driving gear piece 305 is in driving cooperation with the connecting piece 204 to open the circuit breaker.

[0020] Preferably, the button mechanism 2 further comprises a first reset spring 205 for driving the connecting piece 204 to reset.

[0021] Preferably, the connecting piece 204 is a bar-shaped piece, comprising a connecting piece main body 204-0, a connecting piece first hole 204-1 and a connecting piece second hole 204-3 respectively arranged at two ends of the connecting piece main body 204-0 and in cooperation with the first connecting rod 202 and the second connecting rod 203 respectively, a connecting piece driven surface 204-4 in driving cooperation with the driving gear piece 305, a connecting piece spring limiting boss 204-2 arranged on one side of the connecting piece main body 204-0, and a connecting piece track boss 204-5 arranged on the connecting piece main body 204-0.

[0022] The first reset spring 205 is arranged between the connecting piece spring limiting boss 204-2 and the circuit breaker housing 1; the circuit breaker housing 1 further comprises a connecting piece track groove arranged thereon, and the connecting piece track boss 204-5 is slidingly arranged in the connecting piece track groove.

[0023] Preferably, the operating mechanism 5 further comprises a rotating plate 505 pivotally arranged on the circuit breaker housing 1, a jump buckle 503 and a lock buckle 504 respectively pivotally arranged on the rotating plate 505 and in locking cooperation, a third connecting rod 502 connected with the transmission piece 501 and the jump buckle 503 at two ends respectively, and a second reset spring 506 for driving the rotating plate 505; the circuit breaker further comprises a movable contact la and a stationary contact lb in cooperation, and the movable contact la is connected with the rotating plate 505 at one end, and the stationary contact lb is fixedly arranged on the circuit breaker housing 1.

[0024] Preferably, the circuit breaker further comprises a locking mechanism 4, one end of which is a locking mechanism driven end protruding outside the circuit breaker housing 1, and the other end is a locking mechanism cooperation end in cooperation with the button piece 201 or the first connecting rod 202.

[0025] Preferably, the driving gear part 305 of the electric mechanism 3 cooperates with the connecting part 204, the button part 201 is provided with a button part connecting hole for mounting the first connecting rod 202, and the button part connecting hole is a long strip waist hole.

[0026] Preferably, the locking mechanism 4 and the first reset spring 205 of the button mechanism 2 are located on the same side of the button part 201 and the connecting part 204; the locking mechanism 4 comprises a locking part pivotally arranged at the middle part of the circuit breaker shell 1, one end of the locking part is a locking mechanism cooperation end, and the other end is a locking mechanism driven end.

[0027] The circuit breaker of the present application comprises an electric mechanism for realizing automatic opening and closing of the circuit breaker, the closing operation is realized through cooperation of the electric mechanism and the operating mechanism, and the opening operation is realized through cooperation of the electric mechanism and the button mechanism, so that the structure of the electric opening and closing is simplified, and the service life of the circuit breaker is prolonged.

[0028] Further, the preferred embodiment of the present application has the following technical effects: first, compared with the prior art circuit breaker in which the closing / opening operation is realized through cooperation of the electric mechanism and the operating mechanism, the wear progress of the operating mechanism is effectively slowed down, thereby being beneficial to prolonging the service life of the circuit breaker; second, during the closing / opening process, the driving gear part of the electric mechanism always rotates in the first direction, that is, the motor of the electric mechanism does not need to change the rotation direction during the closing / opening process, which is beneficial to simplifying the control process of the electric mechanism; third, the motor of the electric mechanism does not need to frequently switch between forward rotation and reverse rotation, thereby reducing the probability of damage of the motor, and being beneficial to prolonging the service life of the electric mechanism.

[0029] In addition, the button mechanism of the present application is a combined part of the button part, the first connecting rod, the connecting part and the second connecting rod, which is beneficial to production of the button mechanism and cooperation of the button mechanism with other components of the circuit breaker. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a structural schematic diagram of the circuit breaker of the present application, and at least shows the specific structure of the button mechanism, the electric mechanism and the operating mechanism;

[0031] Figure 2 is a structural schematic diagram of the connecting part of the present application;

[0032] Figure 3 is a structural schematic diagram of the driving gear part of the present application;

[0033] Figure 4 is a schematic diagram of the assembly relationship of the driven gear, the energy storage spring and the transmission part of the present application;

[0034] Figure 5 is a structural schematic diagram of the driven gear of the present application;

[0035] Figure 6 Figure 1 is a structural schematic diagram of the transmission member of the present application, showing at least the positional relationship of the first transmission member connecting hole, the second transmission member connecting hole and the transmission member shaft hole;

[0036] Figure 7 Figure 2 is a structural schematic diagram of the transmission member of the present application, showing at least the positional relationship of the energy storage spring assembly groove, the driven gear limiting groove and the transmission member spring limiting groove;

[0037] Figure 8 Figure 3 is a structural schematic diagram of the energy storage spring of the present application;

[0038] Figure 9 Figure 4 is a structural schematic diagram of the circuit breaker of the present application, showing the circuit breaker in the open state and the drive gear member in the first initial position;

[0039] Figure 10 Figure 5 is a structural schematic diagram of the circuit breaker of the present application, showing the circuit breaker in the open state and the drive gear member rotated from the first initial position to mesh with the driven gear;

[0040] Figure 11 Figure 6 is a structural schematic diagram of the circuit breaker of the present application, showing the circuit breaker in the process of closing and the movable contact and the stationary contact already closed;

[0041] Figure 12 Figure 7 is a structural schematic diagram of the circuit breaker of the present application, showing the circuit breaker in the closed state and the drive gear member in the intermediate position;

[0042] Figure 13 Figure 8 is a schematic diagram of the cooperation relationship between the drive gear member and the closing-in-place stop table of the present application;

[0043] Figure 14 Figure 9 is an assembly structural schematic diagram of the hand-automatic switching device of the present application;

[0044] Figure 15 Figure 10 is a structural schematic diagram of the circuit breaker operating interface of the circuit breaker shell of the present application;

[0045] Figure 16 Figure 11 is a structural schematic diagram of the hand-automatic switching device of the present application, showing the cooperation relationship between the hand-automatic switching device and the switching switch element;

[0046] Figure 17 Figure 12 is a structural schematic diagram of the circuit breaker of the present application, showing at least the distribution relationship of the components of the circuit breaker in the circuit breaker shell;

[0047] Figure 18 Figure 13 is a structural schematic diagram of the circuit breaker of the present application, showing at least the positional relationship of the circuit board and the other components of the circuit breaker;

[0048] Figure 19is a schematic diagram of the positional relationship of the line board, the incoming line terminal and the line board slot according to the present application;

[0049] Figure 20 is a schematic diagram of the positional relationship of the incoming line terminal and the line board slot according to the present application;

[0050] Figure 21 is a schematic diagram of the structure of the circuit breaker according to the present application, which shows at least the positional relationship and the cooperation relationship between the driving gear member and the first switch member;

[0051] Figure 22 is a schematic diagram of the structure of the circuit breaker according to the present application, which shows at least the positional relationship and the cooperation relationship between the connecting member and the second switch member;

[0052] Figure 23a is a schematic diagram of the first embodiment of the control circuit of the motor according to the present application, in which the circuit breaker is in the open state, and the closing voltage signal is loaded between the first switch member and the closing circuit;

[0053] Figure 23b is a schematic diagram of the first embodiment of the control circuit of the motor according to the present application, in which the circuit breaker is in the closed state, and the opening voltage signal is loaded between the first switch member and the opening circuit;

[0054] Figure 24a is a schematic diagram of the second embodiment of the control circuit of the motor according to the present application, in which the circuit breaker is in the open state, the first switch member is connected to the closing circuit, the second switch member is connected to the closing auxiliary circuit, and the closing voltage signal is loaded between the first switch member and the closing circuit;

[0055] Figure 24b is a schematic diagram of the second embodiment of the control circuit of the motor according to the present application, in which the circuit breaker is in the closed state, the first switch member is connected to the opening circuit, the second switch member is connected to the opening auxiliary circuit, and the opening voltage signal is loaded between the first switch member and the opening circuit;

[0056] Figure 24c is a schematic diagram of the second embodiment of the control circuit of the motor according to the present application, in which the circuit breaker has been switched to the open state by the manual operation assembly, the first switch member is connected to the opening circuit, the second switch member is connected to the closing auxiliary circuit, and the closing voltage signal is loaded between the first switch member and the closing circuit;

[0057] Figure 24d is a schematic diagram of the second embodiment of the control circuit of the motor according to the present application, in which the circuit breaker has been switched to the closed state by the manual operation assembly, the first switch member is connected to the closing circuit, the second switch member is connected to the opening auxiliary circuit, and the opening voltage signal is loaded between the first switch member and the opening circuit;

[0058] Figure 25ais a schematic diagram of the third embodiment of the control circuit of the motor of the present invention, when the circuit breaker is in the open state, the closing voltage signal is applied across the first switching element and the closing circuit;

[0059] Figure 25b is a schematic diagram of the third embodiment of the control circuit of the motor of the present invention, when the circuit breaker is in the closed state, the opening voltage signal is applied across the first switching element and the opening circuit;

[0060] Figure 26a is a schematic diagram of the fourth embodiment of the control circuit of the motor of the present invention, when the circuit breaker is in the open state, the first switching element is connected to the closing circuit, the second switching element is connected to the closing auxiliary circuit, the closing voltage signal is applied across the first switching element and the closing circuit;

[0061] Figure 26b is a schematic diagram of the fourth embodiment of the control circuit of the motor of the present invention, when the circuit breaker is in the closed state, the first switching element is connected to the opening circuit, the second switching element is connected to the opening auxiliary circuit, the opening voltage signal is applied across the first switching element and the opening circuit;

[0062] Figure 26c is a schematic diagram of the fourth embodiment of the control circuit of the motor of the present invention, when the circuit breaker has been switched to the open state by the manually operated assembly, the first switching element is connected to the opening circuit, the second switching element is connected to the closing auxiliary circuit, the closing voltage signal is applied across the first switching element and the closing circuit;

[0063] Figure 26d is a schematic diagram of the fourth embodiment of the control circuit of the motor of the present invention, when the circuit breaker has been switched to the closed state by the manually operated assembly, the first switching element is connected to the closing circuit, the second switching element is connected to the opening auxiliary circuit, the opening voltage signal is applied across the first switching element and the opening circuit. DETAILED DESCRIPTION

[0064] The specific embodiments of the circuit breaker of the present invention are further illustrated by the following examples given in connection with the accompanying drawings. Figure 1 The circuit breaker of the present invention is not limited to the description of the following examples.

[0065] The application discloses a circuit breaker, which comprises a circuit breaker shell 1, a button mechanism 2, an electric mechanism 3 and an operating mechanism 5 arranged in the circuit breaker shell 1, a movable contact 1a connected with the operating mechanism 5, a fixed contact 1b used in cooperation with the movable contact 1a, and the button mechanism 2 can drive the circuit breaker to close or open through the operating mechanism 5, so that manual closing and opening are realized; the electric mechanism 3 is driven in cooperation with the button mechanism 2 and / or the operating mechanism 5, drives the circuit breaker to close or open (electric opening / closing), and automatic closing and opening are realized. Further, the circuit breaker of the application further comprises a short-circuit protection mechanism 6, an arc extinguishing system 7, an overload protection mechanism 110, an incoming terminal 880 and an outgoing terminal 881; the short-circuit protection mechanism 6 and the overload protection mechanism 110 are driven in cooperation with the operating mechanism 5, when short-circuit or overload failure occurs in the circuit breaker, the short-circuit protection mechanism 6 and the overload protection mechanism 110 drive the operating mechanism 5 to trip, so that the movable contact 1a and the fixed contact 1b of the circuit breaker can be disconnected.

[0066] The first circuit breaker disclosed by the application is as follows:

[0067] As shown in Figure 1 、 9 The application discloses a circuit breaker, which comprises a circuit breaker shell 1, a button mechanism 2, an electric mechanism 3 and an operating mechanism 5 arranged in the circuit breaker shell 1, a movable contact 1a connected with the operating mechanism 5, a fixed contact 1b used in cooperation with the movable contact 1a, and the button mechanism 2 can drive the circuit breaker to close or open through the operating mechanism 5; the electric mechanism 3 is driven in cooperation 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 comprises a transmission member 501 pivotally arranged on the circuit breaker shell 1 and connected with the button mechanism 2 in a driving mode, the button mechanism 2 is pressed to drive the transmission member 501 to rotate in a closing direction, so that manual closing is realized, and the button mechanism 2 is pulled to drive the transmission member 501 to rotate reversely, so that manual opening is realized; the electric mechanism 3 drives the transmission member 5 to rotate, so that the circuit breaker is closed (electric closing), and the electric mechanism 3 drives the transmission member 501 to rotate reversely through the button mechanism 2, so that the circuit breaker is opened (electric opening). Further, as shown in Figure 1 、 9The electric mechanism 3 includes a driving gear 305 and a driven gear 306 pivotally arranged on the circuit breaker housing 1 respectively, the driving gear 305 is in driving cooperation with the driven gear 306, the driven gear 306 is coaxially arranged with the transmission member 501 and in driving cooperation with the transmission member 501; the driving gear 305 is in driving cooperation with the driven gear 306, the driven gear 306 drives the transmission member 501 to rotate to the closing direction to close the circuit breaker, the driving gear 305 is in driving cooperation with the button mechanism 2, the button mechanism 2 drives the transmission member 501 to rotate reversely to open the circuit breaker, thus the automatic opening and closing is realized. The circuit breaker of the present application includes the electric mechanism for realizing the automatic opening and closing of the circuit breaker, the closing operation is realized by the cooperation of the electric mechanism and the operating mechanism, the opening operation is realized by the cooperation of the electric mechanism and the button mechanism, thus the structure of the electric opening and closing is simplified and the service life of the circuit breaker is prolonged.

[0068] Further, as one of the improvements of the present application, the driving gear 305 drives the driven gear 306 to rotate in the same direction when realizing the closing of the circuit breaker, that is, the motor of the electric mechanism 3 always rotates in one direction during the automatic opening and closing, thus the control process of the electric mechanism 3 is simplified. In a specific embodiment, when closing, the driving gear 305 rotates from the first initial position to the first direction to engage with the driven gear 306, the driving gear 305 continues to rotate and drives the transmission member 501 to rotate to the second direction through the driven gear 306, thus the circuit breaker is closed, then the driving gear 305 continues to rotate to the intermediate position (the intermediate position refers to the position that the driving gear 305 is disengaged from the driven gear 306 and the driving gear 305 does not drive the connecting member 204 of the button mechanism 2) and is disengaged from the driven gear 306; when opening, the driving gear 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 to the first direction, thus the circuit breaker is opened, then the driving gear 305 continues to rotate to the first initial position (that is, the position that does not affect the manual opening and closing function of the circuit breaker). The closing operation of the circuit breaker of the present application is realized by the cooperation of the electric mechanism 3 and the operating mechanism 5, the opening operation is realized by the cooperation of the electric mechanism 3 and the button mechanism 2, firstly, compared with the circuit breaker of the prior art in which the closing / opening operation is realized by the cooperation of the electric mechanism 3 and the operating mechanism 5, the wear progress of the operating mechanism 5 is effectively slowed down, thus the service life of the circuit breaker is prolonged; secondly, during the closing / opening process, the driving gear 305 of the electric mechanism 3 always rotates to the first direction, that is, the motor 301 of the electric mechanism 3 does not need to change the rotating direction during the closing / opening process, thus the control process of the electric mechanism 3 is simplified; thirdly, the motor 301 of the electric mechanism 3 does not need to frequently switch between the forward rotation and the reverse rotation, thus the probability of damaging the motor 301 is reduced, thus the service life of the electric mechanism 3 is prolonged.

[0069] Preferably, as shown in Figure 1 The button mechanism 2 comprises a button piece 201 and a connecting piece 204 respectively slidingly arranged on the circuit breaker housing 1, a first connecting rod 202 having two ends respectively connected with the button piece 201 and the connecting piece 204, and a second connecting rod 203 having two ends respectively connected with the connecting piece 204 and a driving piece 501. It is to be noted that the button piece 201, the first connecting rod 202 and the connecting piece 204 of the button mechanism 2 can be designed as an integrated component, thereby reducing the number of parts. In order to facilitate the cooperation of the button mechanism 2 with other mechanisms and without affecting the cooperation with the electric mechanism 3, the button mechanism 2 of the present application is preferably a combined component of the button piece 201, the first connecting rod 202, the connecting piece 204 and the second connecting rod 203. Further, an indicating piece (not shown in the figure) for indicating the on-off state is arranged in the button piece 201, and an indicating window is arranged on the button piece 201, and the button piece 201 drives the indicating piece to swing or slide to display the on-off state of the circuit breaker during the on-off operation.

[0070] Further, as shown in Figure 17 The circuit breaker further comprises a locking mechanism 4, one end of which is a locking mechanism driven end protruding outside the circuit breaker housing 1, and the other end is a locking mechanism cooperating end cooperating with the button mechanism 2. An improvement of the present application is that the locking mechanism cooperating end of the locking mechanism 4 cooperates with the button piece 201 or the first connecting rod 202, and the driving gear piece 305 of the electric mechanism 3 cooperates with the connecting piece 204; the button mechanism 2 adopts the combined component mode of the button piece 201, the first connecting rod 202 and the connecting piece 204, thereby facilitating the cooperation of the button mechanism 2 with the locking mechanism 4 and the electric mechanism 3 at the same time. It is to be noted that the circuit breaker of the present embodiment is an insertion type circuit breaker, which is inserted into the circuit breaker assembly position of a cabinet, the locking mechanism 4 cooperates with the button mechanism 2 and the housing of the circuit breaker assembly position, thereby realizing the locking and / or unlocking of the circuit breaker after being installed into the circuit breaker assembly position, and / or preventing the circuit breaker from being installed out of position, and / or preventing the circuit breaker from being installed into or pulled out of the circuit breaker assembly position in the closed state, and / or preventing the circuit breaker from being closed when not installed into the circuit breaker assembly position. The button mechanism 2 of the present application is suitable for cooperating with each locking mechanism 4, which all belong to the protection scope of the present application.

[0071] For example, one embodiment of the locking mechanism is that a locking hole corresponding to the driven end of the locking mechanism is arranged on the breaker mounting position of the cabinet. After the breaker is mounted, the driven end of the locking mechanism 4 protrudes outside the breaker housing 1 and into the locking hole of the cabinet, preventing the breaker from being pulled out of the cabinet at will. Pulling the button piece 201, the button piece 201 or the first connecting rod 202 or the connecting piece 204 or the indicating piece can drive the matching end of the locking mechanism to retract the driven end of the locking mechanism into the breaker housing 1, so that the breaker can be pulled out of the breaker mounting position. Another embodiment of the locking mechanism is that when the breaker is not mounted in the breaker mounting position, the driven end of the locking mechanism is pressed by the cabinet wall to retract into the breaker housing 1, and the matching end of the locking mechanism is limited to cooperate with the button piece 201 or the first connecting rod 202 or the connecting piece 204 or the indicating piece, preventing the button piece 201 from moving in the closing direction, and unable to close when not mounted in the breaker mounting position. When the breaker is mounted in the breaker mounting position, the driven end of the locking mechanism is no longer pressed by the shell of the breaker mounting position to move outside the breaker housing 1, so that the matching end of the locking mechanism is released from the limited cooperation with the button piece 201 or the first connecting rod 202 or the connecting piece 204, and the button piece 201 can move in the closing direction and make the breaker close through the operating mechanism 5.

[0072] Preferably, as Figure 4 、 9The circuit breaker further comprises an energy storage spring 3-5 arranged between the driven gear 306 and the transmission member 501, as shown in Fig. 12, for realizing compensation of automatic closing out of position and improving reliability of automatic closing. The energy storage spring 3-5 has two functions: one is to reserve a certain excess in the matching stroke of the sector gears of the driving gear member 305 and the driven gear 306, and the other is to reliably close even if there is a matching error between the gears and structural members 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, until the driving gear member 305 rotates to the intermediate position and disengages from the driven gear 306. The circuit breaker of the present application has the energy storage spring 3-5 arranged between the driven gear 306 of the electric drive 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 drive mechanism 3 drives the driven gear 306 to rotate in the second direction relative to the transmission member 501, so that the energy storage spring stores energy, thereby ensuring that the circuit breaker is closed to position, i.e. ensuring effective closing of the circuit breaker, improving the safety of electricity use of the user. In particular, after the electric drive mechanism 3 is used for a long time, the gears will have a matching error due to wear or a position detection error of the circuit board, which causes the circuit breaker to be automatically closed out of position, and the energy storage spring of the present application can reliably solve the above problems. Further, as shown in Figs. Figure 9 and 12 When the circuit breaker is in the closed state, 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, so that the circuit breaker is opened, and the driving gear member 305 continues to rotate to the first initial position.

[0073] The following is a second circuit breaker disclosed by the present application:

[0074] As shown in Figs. Figure 21 , 23aAs shown in Figures 23b, 25a, and 25b, the circuit breaker of the present invention includes an electric mechanism 3 and an operating mechanism 5 for automatic opening and closing. The electric mechanism 3 and the operating mechanism 5 are driven together (including direct and indirect driving cooperation). The electric mechanism 3 includes a motor 301 and a gear set, which is driven and connected to the motor 301. The gear set includes a trigger gear. The circuit breaker also includes a switching device, a closing circuit, and a opening circuit. The switching device includes a first switching element 9B that is driven and cooperates with the trigger gear. The output terminal of the first switching element 9B is connected to the closing circuit and the opening circuit, respectively. The motor 301 is connected in series with the closing circuit. In the circuit and the tripping circuit; when the circuit breaker is in the tripping state, and the first switch 9B connects the closing circuit and simultaneously disconnects the tripping circuit, a closing voltage signal is applied across the first switch 9B and the closing circuit. After the electric mechanism 3 drives the circuit breaker to close, it triggers the gear to drive the first switch 9B to disconnect the closing circuit and connect the tripping circuit; when the circuit breaker is in the closing state, and the first switch 9B connects the tripping circuit and simultaneously disconnects the closing circuit, a tripping voltage signal is applied across the first switch 9B and the tripping circuit. After the electric mechanism 3 drives the circuit breaker to trip, it triggers the gear to drive the first switch 9B to disconnect the tripping circuit and connect the closing circuit. The circuit breaker of this invention, after completing the closing / opening operation, uses a trigger gear to drive the first switching element 9B to switch between the closing and opening circuits. Its control principle is simple: applying a voltage signal to the electric mechanism 3 activates it. After completing the closing / opening operation, the trigger gear drives the first switching element 9B to switch between the closing and opening circuits, thus stopping the motor. This eliminates the need for the complex circuit structure and control principle of existing technologies used to detect the specific position of the gear, thereby simplifying the overall structure of the circuit breaker and the control circuit of the electric mechanism 3, and making the circuit breaker of this invention more reliable. It should be noted that the motor of this invention described above is suitable for purely electric closing and opening operations.

[0075] The following is the third type of circuit breaker disclosed in this invention:

[0076] Preferred, such as Figure 21 , 22 As shown in Figures 24a-24d and 26a-26d, the circuit breaker of the present invention further includes a manual operation component, a closing auxiliary circuit, and a opening auxiliary circuit. The manual operation component drives the circuit breaker to close / open via the operating mechanism 5. The switching device further includes a second switching element 9C that cooperates with the manual operation component or the operating mechanism 5. The output terminal of the second switching element 9C is connected to the closing auxiliary circuit and the opening auxiliary circuit, respectively. The manual operation component is driven and connected to the operating mechanism 5. The closing auxiliary circuit and the opening auxiliary circuit are respectively connected to the two input terminals of the motor 301. The input terminal of the second switching element 9C is connected to the input terminal of the first switching element 9B.

[0077] When the circuit breaker is in the open state, the first switch 9B is connected to the closing circuit and the second switch 9C is connected to the closing auxiliary circuit, a closing voltage signal is loaded between the first switch 9B and the closing circuit, after the electric mechanism 3 drives the circuit breaker to close, the trigger gear drives the first switch 9B to disconnect the closing circuit and connect the opening circuit, and the action of the manual operating assembly or operating mechanism 5 when closing drives the second switch 9C to disconnect the closing auxiliary circuit and connect the opening auxiliary circuit;

[0078] When the circuit breaker is in the closed state, the first switch 9B is connected to the opening circuit and the second switch 9C is connected to the opening auxiliary circuit, after the manual operating assembly drives the circuit breaker to open, the action of the manual operating assembly or operating mechanism 5 when opening drives the second switch 9C to disconnect the opening auxiliary circuit and connect the closing auxiliary circuit; a closing voltage signal is loaded between the first switch 9B and the closing circuit, the electric motor 301 drives the trigger gear to rotate, the trigger gear drives the first switch 9B to disconnect the opening circuit and connect the closing circuit, then the electric mechanism 3 drives the circuit breaker to close, the trigger gear drives the first switch 9B to disconnect the closing circuit and connect the opening circuit, and the action of the manual operating assembly or operating mechanism 5 drives the second switch 9C to disconnect the closing auxiliary circuit and connect the opening auxiliary circuit.

[0079] When the circuit breaker is in the closed state, the first switch 9B is connected to the opening circuit and the second switch 9C is connected to the opening auxiliary circuit, after the manual operating assembly drives the circuit breaker to open, the action of the manual operating assembly or operating mechanism 5 when opening drives the second switch 9C to disconnect the opening auxiliary circuit and connect the closing auxiliary circuit; a closing voltage signal is loaded between the first switch 9B and the closing circuit, the electric motor 301 drives the trigger gear to rotate, the trigger gear drives the first switch 9B to disconnect the opening circuit and connect the closing circuit, then the electric mechanism 3 drives the circuit breaker to close, the trigger gear drives the first switch 9B to disconnect the closing circuit and connect the opening circuit, and the action of the manual operating assembly or operating mechanism 5 drives the second switch 9C to disconnect the closing auxiliary circuit and connect the opening auxiliary circuit.

[0080] When the circuit breaker is in the open state, the first switch 9B is connected to the closing circuit and the second switch 9C is connected to the closing auxiliary circuit, after the manual operating assembly drives the circuit breaker to close, the action of the manual operating assembly or operating mechanism 5 when closing drives the second switch 9C to disconnect the closing auxiliary circuit and connect the opening auxiliary circuit; a closing voltage signal is loaded between the first switch 9B and the closing circuit, the electric 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 open, the trigger gear drives the first switch 9B to disconnect the opening circuit and connect the closing circuit, and the action of the manual operating assembly or operating mechanism 5 drives the second switch 9C to disconnect the opening auxiliary circuit and connect the closing auxiliary circuit.

[0081] The circuit breaker of the present application can normally close and open by loading the closing voltage signal and the opening voltage signal when the current state of the circuit breaker (i.e. the open or closed state) corresponds to or does not correspond to the position of the trigger gear. It should be noted that the situation that the current state of the circuit breaker does not correspond to the position of the trigger gear is caused by the manual operation of the circuit breaker after the circuit breaker is closed or opened by the electric mechanism 3 through the operating mechanism 5. If the circuit breaker is only closed or opened by the electric mechanism 3 through the operating mechanism 5, the current state of the circuit breaker always corresponds to the position of the trigger gear. Therefore, the circuit breaker of the present application can be compatible with the manual / automatic closing and opening operation by 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.

[0082] It should be noted that the second and third circuit breakers can be realized on the basis of the first circuit breaker. Specifically, the second circuit breaker can be realized by adding the first switch 9B, the closing circuit and the opening circuit to the first circuit breaker, and the first switch 9B is driven in cooperation with the trigger gear of the electric mechanism 3. The third circuit breaker can be realized by adding the second switch 9C, the closing auxiliary circuit and the opening auxiliary circuit to the second circuit breaker, and the second switch 9C is driven in cooperation with the manual operation assembly or the operating mechanism 5.

[0083] As shown in Figure 1 Fig. 20 shows the first embodiment of the circuit breaker of the present application, which is the first embodiment of the first circuit breaker.

[0084] As shown in Figure 1 , 9 As shown in Fig. 12, the circuit breaker of the present application comprises a circuit breaker housing 1, 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 drivingly connected with the operating mechanism 5, and can drive the circuit breaker to close / open through the operating mechanism 5 to realize the manual closing / opening. The electric mechanism 3 is drivingly connected with the button mechanism 2 and / or the operating mechanism 5, and drives the circuit breaker to close / open through the operating mechanism 5 to realize the automatic closing / opening.

[0085] Preferably, as shown in Figure 1The electric mechanism 3 is in driving cooperation with the transmission member 501 of the operating mechanism 5 to realize the closing of the circuit breaker, and in driving cooperation with the button mechanism 2 to realize the opening of the circuit breaker. The electric mechanism 3 comprises a driving gear member 305 and a driven gear 306 which are pivotally arranged on the circuit breaker housing 1 respectively, and the driving gear member 305 is in driving cooperation with the driven gear 306 and the button mechanism 2 respectively. The operating mechanism 5 comprises a transmission member 501 which is pivotally arranged on the circuit breaker housing 1 and is in driving connection with the button mechanism 2, and the driven gear 306 is coaxially arranged with the transmission member 501 and is in driving cooperation with the transmission member 501. The driving gear member 305 rotates from a first initial position (as shown in Figure 9 ) to a first direction to engage with the driven gear 306 (as shown in Figure 10 ), and the driving gear member 305 continues to rotate and drives the transmission member 501 to rotate to a second direction through the driven gear 306 to realize the closing of the circuit breaker, and then the driving gear member 305 continues to rotate to an intermediate position (as shown in Figure 12 ) and disengages from the driven gear 306. The driving gear member 305 rotates from the intermediate position to the first direction to drive the button mechanism 2 to act, and the button mechanism 2 drives the transmission member 5 to rotate to the first direction to realize the opening of the circuit breaker, and then the driving gear member 305 continues to rotate to the first initial position.

[0086] The rotation direction of the driving gear member 305 to drive the driven gear 306 to realize the closing of the circuit breaker is consistent with the rotation direction of the driving gear member 305 to drive the button mechanism 2 to realize the opening of the circuit breaker, which is beneficial to simplify the control process of the electric mechanism 3. Specifically, as shown in Figure 1 , 9 -12, the first direction is counterclockwise direction, and the second direction is clockwise direction, and the driving gear member 305 always rotates in the counterclockwise direction (i.e. always rotates in the same direction) during the driving of the closing and opening of the circuit breaker. The driving gear member 305 is disengaged from the driven gear 306 when the driving gear member 305 is in the first initial position or the intermediate position. 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 the power supply circuit of the electric mechanism 3 to be disconnected, so that the motor 301 is de-energized and the driving gear member 305 stops rotating, which can greatly simplify the control process of the electric mechanism 3. Of course, the driving gear member 305 or the driven gear 306 can also trigger the position sensor when the driving gear member 305 rotates to the first initial position or the intermediate position, and then the position information is transmitted to the control chip, and then the control chip controls the motor to stop rotating, which is relatively complex to realize.

[0087] Preferably, the driven gear 306 and the transmission member 501 are integrated members or separate members.

[0088] Preferably, the electric mechanism 3 comprises an electric motor 301 and a gear set connected in sequence, the gear set comprises a transmission gear set, a driving gear piece 305 and a driven gear 306. As shown in Figure 1 Fig. 3, an embodiment of the electric mechanism 3. The electric mechanism 3 comprises an electric motor 301, a worm 302, a first transmission gear piece 303, a second transmission gear piece 304 and a driving gear piece 305 connected in sequence, and a driven gear 306 drivingly connected with the driving gear piece 305; the transmission gear set comprises the first transmission gear piece 303 and the second transmission gear piece 304, and the first transmission gear piece 303, the second transmission gear piece 304 and the driving gear piece 305 are pivotally arranged on the circuit breaker housing 1. Obviously, the number of the transmission gear pieces of the transmission gear set can be reduced or increased according to requirements.

[0089] Preferably, as shown in Figure 3 Fig. 4, the driving gear piece 305 comprises a first driving gear 305-1 and a driving tooth 305-20 drivingly connected with the driven gear 306 and the button mechanism 2 respectively. Specifically, the driving gear piece 305 comprises coaxially connected and sequentially arranged a first driving gear 305-1, a second driving gear 305-2 and a third driving gear 305-3, the third driving gear 305-3 is drivingly connected with the second transmission gear piece 304 of the transmission gear set, and the first driving gear 305-1 and the second driving gear 305-2 are drivingly connected with the driven gear 306 and the button mechanism 2 respectively; further, as shown in Figure 1 4 Fig. 5, the first driving gear 305-1 and the driven gear 306 are both sector gears; the second driving gear 305-2 is provided with the driving tooth 305-20 drivingly connected with the button mechanism 2. When closing, the driving gear piece 305 rotates in a first direction, the first driving gear 305-1 is engaged with the driven gear 306, and the driving tooth 305-20 is disengaged from the button mechanism 2, and after closing, the first driving gear 305-1 is disengaged from the driven gear 306; when opening, the driving gear piece 305 continues to rotate in the first direction, the driving tooth 305-20 is drivingly connected with the button mechanism 2 to realize opening, and at this time, the first driving gear 305-1 is disengaged from the driven gear 306. Obviously, the driving tooth 305-20 can be only one as shown in Figure 3 Fig. 6, or can be a sector gear with multiple driving teeth according to requirements, and the connecting piece 204 on the button mechanism 2 can be provided with teeth to be drivingly connected with the second driving gear 305-2 with multiple driving teeth. In addition, the driving tooth 305-20 can also be arranged on the first driving gear 305-1.

[0090] Preferably, as shown in Figure 1 ​As shown, the button mechanism 2 comprises a button piece 201 and a connecting piece 204 slidingly arranged on the circuit breaker housing 1 respectively, a first connecting rod 202 connected with the button piece 201 and the connecting piece 204 respectively at two ends, and a second connecting rod 203 connected with the connecting piece 204 and the transmission piece 501 respectively at two ends; the button piece 201 is pressed / pulled, the transmission piece 501 is driven to rotate in the second direction / first direction through the first connecting rod 202, the connecting piece 204 and the second connecting rod 203 connected in sequence, so that the circuit breaker is closed / opened. Further, as shown in Figure 1 As shown, the second driving gear 305-2 of the driving gear piece 305 is drivingly matched with the connecting piece 204.

[0091] Specifically, as shown in Figure 1 、 9 the button piece 201, the first connecting rod 202, the connecting piece 204 and the second connecting rod 203 of the button mechanism 2 are arranged in sequence along a straight line from top to bottom, the button piece 201 is pulled upward / pressed downward, the button piece 201 drives the transmission piece 501 to rotate counterclockwise / clockwise through the first connecting rod 202, the connecting piece 204 and the second connecting rod 203 connected in sequence, so that the circuit breaker is closed / opened; when the circuit breaker is in the closed state, the second driving gear 305-2 drives the connecting piece 204 to move upward, the connecting piece 204 drives the transmission piece 501 to rotate clockwise through the second connecting rod 203, so that the circuit breaker is opened.

[0092] Preferably, as shown in Figure 17 The circuit breaker further comprises a locking mechanism 4, one end of the locking mechanism 4 is a locking mechanism driven end protruding outside the circuit breaker housing 1, and the other end is a locking mechanism matched end matched with the button mechanism 2. The locking mechanism 4 comprises a locking piece pivotally arranged in the middle of the circuit breaker housing 1, and the two ends of the locking piece are the locking mechanism driven end and the locking mechanism matched end respectively. Specifically, as shown in Figure 17 When the button piece 201 or the first connecting rod 202 is limited with the locking mechanism matched end, the button piece 201 cannot move downward (the closing direction), and the circuit breaker cannot be closed.

[0093] Preferably, the first connecting rod 202 and the second connecting rod 203 are U-shaped connecting rods.

[0094] Preferably, as shown in Figure 1 The button mechanism 2 further comprises a first reset spring 205 for driving the connecting piece 204 to reset, and the circuit breaker housing 1 further comprises a connecting piece track slot, the connecting piece 204 slides along the connecting piece track slot in a straight line.

[0095] Preferably, asFigure 2 The image shows one embodiment of the connector 204.

[0096] like Figure 2 As shown, the connector 204 is a strip-shaped component, including a connector body 204-0, a first connector hole 204-1 and a second connector hole 204-3 respectively disposed at both ends of the connector body 204-0 and respectively cooperating with the first connecting rod 202 and the second connecting rod 203, a connector driven platform 204-4 that drives and cooperates with the driving teeth 305-20 of the drive gear component 305, a connector spring limiting boss 204-2 disposed on one side of the connector body 204-0, and a connector track boss 204-5 disposed on the connector body 204-0. Further, as... Figure 2 As shown, the connecting piece track boss 204-5 and the connecting piece first hole 204-1 are located at the same end of the connecting piece body 204-0, and the connecting piece track boss 204-5 is located on the side of the connecting piece body 204-0 facing the bottom plate of the circuit breaker housing 1; the connecting piece driven platform 204-4 and the connecting piece second hole 204-3 are located at the same end of the connecting piece body 204-0, and the connecting piece driven platform 204-4 is located facing the transmission component 501 of the operating mechanism 5; the connecting piece spring limiting boss 204-2 is located on the side of the connecting piece body 204-0 away from the electric mechanism 3.

[0097] Specifically, such as Figure 2 In the indicated direction, the first hole 204-1 of the connector and the track boss 204-5 of the connector are located at the left end of the connector body 204-0, and the track boss 204-5 of the connector is disposed on the lower side of the connector body 204-0; the second hole 204-3 of the connector and the moving platform 204-4 of the connector are located at the right end of the connector body 204-0, and the moving platform 204-4 of the connector faces to the right; the spring limiting boss 204-2 of the connector is disposed on the rear side of the connector body 204-0.

[0098] like Figure 1 As shown, the first return spring 205 is disposed between the spring limiting boss 204-2 of the connector and the circuit breaker housing 1; the connector track boss 204-5 is slidably disposed within the connector track groove. The connector 204 and the circuit breaker housing 1 are effectively limited by the cooperation of the connector track boss 204-5 and the connector track groove, ensuring the stability of the connector 204 during sliding, thereby improving the stability of the circuit breaker performance. Furthermore, as... Figure 17 As 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 In the indicated direction, the locking member 4 and the first reset spring 205 are both located to the right of the button member 201 and the connector 204.

[0099] Preferably, as shown in Figure 1 the button piece 201 has one end as the operating end outside the circuit breaker shell 1 and the other end extends into the circuit breaker shell 1, and the other end is provided with a button piece connecting hole for mounting the first connecting rod 202, the button piece connecting hole is a long strip waist hole, so that the button piece 201 has one end of the empty stroke when pressed, for pulling the button piece 201 of the button mechanism 2 when it is needed to pull out the tripped circuit breaker from the installed cabinet, so that the locking mechanism 4 is fully retracted into the circuit breaker shell, to contact the locking mechanism 4 and the limiting fit of the shell of the circuit breaker assembly position, and pull out the circuit breaker from the circuit breaker assembly position.

[0100] Preferably, as shown in Figure 1 , which is one embodiment of the operating mechanism 5.

[0101] As shown in Figure 1 , the operating mechanism 5 includes a transmission piece 501 and a rotating plate 505 pivotally arranged on the circuit breaker shell 1 respectively, a jump buckle 503 and a lock buckle 504 pivotally arranged on the rotating plate 505 respectively and locked together, a third connecting rod 502 connected with the transmission piece 501 and the jump buckle 503 respectively, and a second reset spring 506 for driving the rotating plate 505, and the second reset spring 506 is arranged between the lock buckle 504 and the circuit breaker shell 1. The circuit breaker further includes a static contact 1b and a moving contact 1a connected with the operating mechanism 5, one end of the moving contact 1a is connected with the rotating plate 505, and the static contact 1b is fixedly arranged on the circuit breaker shell 1. The structure, principle and working process of the operating mechanism 5 of the present embodiment are similar to those of the prior art, and will not be described here. Of course, the operating mechanism 5 of the circuit breaker of the present application can also adopt other structures.

[0102] Preferably, as shown in Figure 4 -8, which is the second embodiment of the circuit breaker of the present application, which is the second embodiment of the first circuit breaker.

[0103] As shown in Figure 4The difference between the circuit breaker of the embodiment and the first embodiment is that the energy storage spring 3-5 is arranged between the driven gear 306 and the transmission member 501, so as to compensate for the automatic closing failure and improve the reliability of the automatic closing. The energy storage spring 3-5 has two functions: one is to reserve a certain margin for the matching stroke of the driving gear member 305 and the sector gear of the driven gear 306, and the other is to reliably close the circuit breaker even if the gears are misaligned 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 movable and static contacts are reliably contacted, until the driving gear member 305 rotates to the intermediate 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 (the energy release of the energy storage spring 3-5 provides a force to the driven gear 306 to rotate in the first direction relative to the transmission member 501).

[0104] Preferably, as shown in Figure 4 and 8 The energy storage spring 3-5 is a torsional spring, which includes 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 coaxially arranged with the driven gear 306 and the transmission member 501. The first spring arm 3-51 is limitedly matched with the transmission member 501, and the second spring arm 3-52 is limitedly matched with the driven gear 306. Further, as shown in Figure 4 -7, the transmission member 501 includes a driven gear limiting groove 501-306 arranged on one side thereof, the driven gear 306 includes a driven gear body 306-2 and a first sector gear part 306-1 arranged on one side of the driven gear body 306-2. The driven gear body 306-2 is pivotally arranged on the circuit breaker housing 1 coaxially with the transmission member 501. The first sector gear part 306-1 is arranged in the driven gear limiting groove 501-306. One end of the first sector gear part 306-1 abuts against the sidewall of one end of the driven gear limiting groove 501-306, and a first movement gap is provided between the other end of the first sector gear part 306-1 and the sidewall of the other end of the driven gear limiting groove 501-306. The spring body 3-50 is located between the driven gear body 306-2 and the transmission member 501.

[0105] Preferably, as shown in Figure 4The 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 two ends thereof, and the driven gear limiting groove 501-306 includes a driven gear limiting groove head end face 501-6 and a driven gear limiting groove tail end face 501-4 arranged at two ends thereof, the first sector gear part head end face 306-10 is in abutment with 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.

[0106] Specifically, as shown in Figure 4 , 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 limiting 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 shown in Figure 9 , the driving gear part 305 is rotated to the first direction (counterclockwise direction) to mesh with the first sector gear part 306-1 of the driven gear 306 (as shown in Figure 10 ), the driving gear part 305 continues to rotate and drives the driven gear 306 to rotate to the second direction (clockwise direction) through the first sector gear part 306-1, and the driven gear 306 drives the transmission part 501 to rotate to the second direction (clockwise direction) through the energy storage spring 3-5, until the operating mechanism 5 drives the movable contact la and the static contact lb to close (as shown in Figure 11 ), after the circuit breaker is closed, the transmission part 501 is fixed in position and no longer rotates, as shown in Figure 11 , at this time, the driving gear part 305 is still meshed with the first sector gear part 306-1, and is preferably arranged to be disengaged from the meshing by one irregular tooth, then the driving gear part 305 continues to rotate and drives the driven gear 306 to rotate to the second direction (clockwise direction) relative to the transmission part 501 through the first sector gear part 306-1, so as to store energy in the energy storage spring 3-5, and the energy storage spring 3-5 applies the stored energy to the transmission part 501 (that is, applies a thrust to the transmission part 501 to make it rotate to the first direction), so as to ensure that the circuit breaker can still be effectively closed due to the dimensional deviation of the structural parts or the wear of the gear of the motor mechanism, as shown in Figure 12 , after the circuit breaker is closed, the driving gear part 305 continues to rotate to the intermediate position and is disengaged from the first sector gear part 306-1, then the driven gear 306 is reset under the energy release 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).

[0107] Preferably, as shown in Figure 4As shown, the driven gear 306 further comprises a driven gear spring limiting hole 306-3 arranged on the driven gear body 306-2, and the transmission member 501 further comprises a transmission member spring limiting slot 501-5 arranged at one end of the driven gear limiting slot 501-306, and the transmission member spring limiting slot 501-5 and the driven gear limiting slot tail end surface 501-4 are located at the same end of the transmission gear limiting slot 501-306; the first spring arm 3-51 is limited and matched with the transmission member spring limiting slot 501-5, and the second spring arm 3-52 is limited and matched with the driven gear spring limiting hole 306-3.

[0108] Preferably, as shown in Figure 4 As shown in FIG. 7, the transmission member 501 further comprises a transmission member body 501-0 and a transmission member spring assembly slot 501-7 arranged on one side of the transmission member body 501-0, and the driven gear limiting slot 501-306 is arranged on one side of the transmission member spring assembly slot 501-7; the driven gear body 306-2 is arranged in a staggered manner with the first sector gear part 306-1, and the first sector gear part 306-1 is offset to the side where the transmission member 501 is located relative to the driven gear body 306-2; the spring body 3-50 is arranged in the transmission member spring assembly slot 501-7 and is limited between the driven gear body 306-2 and the transmission member body 501-0.

[0109] Preferably, as shown in Figure 6 and 7 As shown in FIG. 7, the transmission member 501 is an embodiment of the transmission member 501.

[0110] As shown in Figure 6 and 7 The transmission member 501 is a cylindrical structure, comprising a transmission member body 501-0, a transmission member spring assembly slot 501-7 and a driven gear limiting slot 501-306 arranged on one side of the transmission member body 501-0, and a transmission member shaft hole 501-3, a first transmission member connecting hole 501-1 and a second transmission member connecting hole 501-2 arranged on the transmission member body 501-0 respectively; the transmission member spring assembly slot 501-7 and the driven gear limiting slot 501-306 are located on the same side of the transmission member body 501-0, and the driven gear limiting slot 501-306 is arranged on one side of the transmission member spring assembly slot 501-7; the transmission member shaft hole 501-3, the first transmission member connecting hole 501-1 and the second transmission member connecting hole 501-2 are located at three vertices of a triangle, the first transmission member connecting hole 501-1 is arranged close to the driven gear limiting slot 501-306, the transmission member 501 is pivotally arranged through the transmission member shaft hole 501-3, the first transmission member connecting hole 501-1 is connected with the second connecting rod 203 of the button mechanism 2, and the second transmission member connecting hole 501-2 is connected with the third connecting rod 502 of the operating mechanism 5.

[0111] Preferably, as shown in Figure 7 and 13 , the transmission member 501 further comprises a stroke limiting slot 501-8, which is arranged on both sides of the transmission member spring assembly slot 501-7 respectively; the circuit breaker housing 1 further comprises a to-position stop table 102 arranged on one side of the transmission member 501; when the circuit breaker is in the open state, one end side wall of the stroke limiting slot 501-8 is limited and matched with the to-position stop table 102, and when the circuit breaker is in the closed state, the other end side wall of the stroke limiting slot 501-8 is limited and matched with the to-position stop table 102. Further, as shown in Figure 13 , when the circuit breaker is closed, one end (as shown in the direction of Figure 13 , which is the lower end of the stroke limiting slot 501-8) of the stroke limiting slot 501-8 is limited and matched with the to-position stop table 102, and when the circuit breaker is opened, the other end (as shown in the direction of Figure 13 , which is the upper end of the stroke limiting slot 501-8) of the stroke limiting slot 501-8 is limited and matched with the to-position stop table 102. The limited and matched of the stroke limiting slot 501-8 and the to-position stop table 102 effectively limits the rotation stroke of the transmission member 501, avoiding the over-rotation of the transmission member 501 and the damage of the operating mechanism 5.

[0112] Preferably, as shown in Figure 4 and 5 , it is an embodiment of the driven gear 306.

[0113] As shown in Figure 4 and 5 , the driven gear 306 comprises a driven gear body 306-2, a first sector gear part 306-1, and a driven gear spring limiting hole 306-3 and a driven gear shaft hole 306-4 arranged on the driven gear body 306-2 respectively; the driven gear body 306-2 comprises a body base plate 306-20, a body limiting table 306-21 and a body spring limiting table 306-22 which are coaxially arranged in sequence and the diameters of which are sequentially reduced, the body base plate 306-20 is abutted with one side of the transmission member main body 501-0 of the transmission member 501, the body limiting table 306-21 is inserted into the transmission member spring assembly slot 501-7 of the transmission member 501, and the body spring limiting table 306-22 is inserted into the middle part of the spring main body 3-50 of the energy storage spring 3-5; one end of the first sector gear part 306-1 is connected with the side of the body base plate 306-20 which is connected with the body limiting table 306-21 and the outer circumferential edge of the body limiting table 306-21 respectively. Further, as shown in Figure 4 and 5 , the driven gear spring limiting hole 306-3 is located between the driven gear shaft hole 306-4 and the first sector gear part 306-1.

[0114] Preferably, as shown in Figure 14 -16, the third embodiment of the circuit breaker of the present application is the third embodiment of the first circuit breaker.

[0115] As shown in Figure 14 -16, the difference between this embodiment and the first embodiment of the circuit breaker is that the circuit breaker further comprises a hand-automatic switching device arranged in the circuit breaker housing 1. The circuit breaker is a plug-in circuit breaker, and the circuit breaker housing 1 is substantially a parallelepiped structure, including a circuit breaker operation interface 1i arranged at one end thereof, and a button assembly hole and an outgoing terminal 881 arranged on the circuit breaker operation interface 1i, with the button mechanism 2 being inserted at one end into the button assembly hole, and an incoming terminal 880 being arranged at the other end of the circuit breaker housing 1; the circuit breaker further comprises a hand-automatic switching device arranged in the circuit breaker housing 1, which comprises a switching operation element 7a and a switching switch element 9A, the switching operation element 7a being drivingly connected with the switching switch element 9A, and the switching switch element 9A being used to realize the switching of the circuit breaker between the manual working mode and the automatic working mode, and to 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, located at one side of the button assembly hole and movably connected with the circuit breaker housing 1. The hand-automatic switching device of the circuit breaker of the present application comprises the drivingly connected switching operation element 7a and switching switch element 9A, which is simple in structure and easy to operate; the switching operation element 7a, one end of the button mechanism 2 and the outgoing terminal 881 are all located on the circuit breaker operation interface 1i, which has a large operation space, is convenient for the user to operate the circuit breaker, and is easy to observe.

[0116] Further, as shown in Figure 14 -16, the hand-automatic switching device further comprises 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, comprising a knob connecting portion 70a and knob operation ends 71a and knob driving portions 72a respectively arranged at two sides of the knob connecting portion 70a; the switching switch element 9A is a micro switch, one end of the switching transmission element 8a is drivingly connected with the knob driving portions 72a, and the other end is drivingly connected with the switching switch element 9A; by rotating 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, so as to press or release the driving rod of the micro switch.

[0117] Further, as shown in Figure 16As shown, the knob driving part 720a includes a knob driving slope 720a which is in driving cooperation with the switching transmission element 8a. The knob driving slope 720a gradually deviates from the switching transmission element 8a from one end of the knob driving part 720a close to the knob connecting part 70a to the other end. The mechanical transmission is used between the components of the hand-automatic switching device, the transmission is reliable, and the structure is simple and convenient for assembly.

[0118] It should be noted that the working state of the electric mechanism 3 has two kinds, which are normal working state and disengaged working state. The electric mechanism 3 is in the normal working state in the automatic working mode, the power supply circuit of the electric mechanism 3 is continuous, and / or the electric mechanism 3 can normally receive the closing / opening signal, and can perform manual closing / opening and automatic closing / opening. The electric mechanism 3 is in the disengaged working state in the manual working mode, the power supply circuit of the electric mechanism 3 is cut off, and / or the electric mechanism 3 cannot receive the closing / opening signal, and can only manually close / open.

[0119] 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, so as to realize the switching between the manual working mode, i.e. only manual closing / opening, and the automatic working mode, i.e. automatic working mode is enabled, and manual closing / opening and automatic closing / opening can be performed at the same time.

[0120] Preferably, the circuit board 111 connected with the electric mechanism 3 is further arranged on the circuit board 111, and the switching switch element 9a is connected with 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, so as to realize the switching between the manual working mode and the automatic working mode of the circuit breaker.

[0121] In addition, the switching switch element 9A can also be used to connect with the control chip for transmitting the switching control signal. The control chip realizes the switching between the manual working mode and the automatic working mode of the circuit breaker according to the high / low level of the switching control signal. When the circuit breaker is in the manual working mode, the control chip does not control the electric mechanism to perform automatic closing operation even if the automatic closing control signal is received.

[0122] Preferably, as Figure 15As shown, the outlet terminal 881 is a plug-in terminal, the circuit breaker housing 1 further comprises an outlet hole 1o and a disconnection hole 1d of the outlet terminal 881 arranged on the circuit breaker operation interface 1i, the outlet hole 1o and the disconnection hole 1d are used in pairs, the wire is inserted into the outlet terminal 881 through the outlet hole 1o and is fixed by the elastic member in the outlet terminal 881, the outlet hole 1o is used to drive the elastic member to enable the wire to be pulled out, the outlet hole 1o, the disconnection hole 1d and the switching operation element 7a are located on the same side of the button assembly hole, and the switching operation element 7a is located between one disconnection hole 1d and the button assembly hole. Further, as shown in Figure 15 As shown, the circuit breaker housing 1 comprises two outlet holes 1o and two disconnection holes 1d, which are respectively a first outlet hole and a first disconnection hole used in pairs, a second outlet hole and a second disconnection hole used in pairs, the first disconnection hole and the second outlet hole are arranged close to the button assembly hole, and the switching operation element 7a is located in the space surrounded by the first disconnection hole, the second outlet hole and the button assembly hole. Further, as shown in Figure 15 As shown, the first outlet hole, the first disconnection hole and the switching operation element 7a are arranged in sequence and side by side on one side of the circuit breaker operation interface 1i, and the second disconnection hole and the second outlet hole are arranged in sequence and side by side on the other side of the circuit breaker operation interface 1i.

[0123] Specifically, as shown in the direction of Figure 14 and 16 As shown, the upper end of the switching transmission element 8a is drivingly matched with the switching operation element 7a, and the lower end is drivingly matched with the switching switch element 9a; by rotating the switching operation element 7a, the switching transmission element 8a is driven to move downward, the switching transmission element 8a presses the driving rod of the micro switch (switching switch element 9a), signal switching is realized, thereby driving the circuit breaker to switch between the manual working mode and the automatic working mode; the first outlet hole, the first disconnection hole and the switching operation element 7a are arranged in sequence and side by side from left to right on the upper side of the circuit breaker operation interface 1i, and the second disconnection hole and the second outlet hole are arranged in sequence and side by side from left to right on the lower side of the circuit breaker operation interface 1i.

[0124] It should be noted that the switching operation element 7a is not limited to a knob, but can also be a button or a sliding tab. Specifically, the switching operation element 7a is a button, 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 the switching operation element 7a is a sliding tab, which is slidingly arranged on the circuit breaker operation interface 1i of the circuit breaker housing 1, by sliding the sliding tab, 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.

[0125] Preferably, as shown in Figure 16As shown in the figure, the knob driving part 72a comprises a knob driving slope 720a which is in driving cooperation with the switching transmission element 8a, and the knob driving slope 720a is gradually inclined from the end connected with the knob connecting part 70a to the end close to the switching switch element 9a. Further, the knob driving slope 720a is a spiral slope which is inclined from the upper end to the lower end.

[0126] It should be pointed out that the knob driving part 72a can also not be provided with the knob driving slope 720a, but be in threaded connection with the switching transmission element 8a, the switching transmission element 8a cannot rotate, and the knob can also drive the switching transmission element 8a to move towards or away from the switching switch element 9a. Of course, the switching operation element 7a also has other various implementation manners, 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 described one by one here.

[0127] Preferably, as shown in the figure, Figure 14 and 16 The hand-automatic switching device further comprises a transmission element reset spring 10 for driving the switching transmission element 8a to reset.

[0128] Preferably, as shown in the figure, Figure 16 which is an embodiment of the switching transmission element 8a.

[0129] As shown in the figure, Figure 16 the switching transmission element 8a is a rod-shaped piece which comprises a transmission element driven part 80a, a transmission element spring limiting table 82a and a transmission element transmission part 81a which are connected in sequence, the transmission element driven part 80a is in driving cooperation with the knob driving part 720a, and the transmission element transmission part 81a is in driving cooperation with the switching switch element 9a. Further, as shown in the figure, Figure 14 and 16 The transmission element reset spring 10 is sleeved on the transmission element transmission part 81a, one end is in limiting cooperation with the transmission element spring limiting table 82a, and the other end is in limiting cooperation with the circuit breaker shell 1.

[0130] Preferably, as shown in the figure, Figure 14As shown in the figure, the circuit breaker housing 1 further comprises a transmission element assembly slot arranged on one side of the button mechanism 2, which comprises an assembly slot upper section 103-1, an assembly slot lower section 103-2 and an assembly slot tail section connected in sequence, the width of the assembly slot lower section 103-2 is greater than the width of the assembly slot upper section 103-1 and the width of the assembly slot lower section 103-2 is greater than the width of the assembly slot tail section, the connection between the assembly slot lower section 103-2 and the assembly slot upper section 103-1 forms a first step structure, the connection between the assembly slot lower section 103-2 and the assembly slot tail section forms a second step structure, the transmission element driven part 80a is arranged in the middle of the assembly slot upper section 103-1, the transmission element transmission part 81a is arranged in the middle of the assembly slot lower section 103-2, the transmission element spring limiting table 82a is limitedly matched with the first step structure, the transmission element return spring 10 is arranged in the middle of the assembly slot lower section 103-2, one end of which is limitedly matched with the transmission element spring limiting table 82a and the other end is limitedly matched with the second step structure, and the free end of the transmission element transmission part 81a is limitedly matched with the switch element 9A after passing through the assembly slot tail section.

[0131] Specifically, as shown in the figure, Figure 14 the assembly slot upper section 103-1, the assembly slot lower section 103-2 and the assembly slot tail section are arranged in sequence from top to bottom and connected in sequence; and the transmission element assembly slot is located between the button mechanism 2 and the outgoing terminal 881.

[0132] It should be noted that in the embodiment, the electric mechanism 3 directly drives the circuit breaker to close through the operating mechanism and drives the circuit breaker to open through the button mechanism 2, and as other embodiments, the electric mechanism 3 can directly drive the circuit breaker to open and / or close through the operating mechanism and drive the circuit breaker to open and / or close through the button mechanism 2, which are all applicable to the manual-automatic switching device of the present application.

[0133] Preferably, as shown in the figure, Figure 1 , 17 -20, which is the fourth embodiment of the circuit breaker of the present application, which is the fourth embodiment of the first circuit breaker.

[0134] Preferably, as shown in the figure, Figure 1 , 17As shown in FIGS. 18, the circuit breaker comprises 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 arranged at two ends of the circuit breaker housing 1 respectively; the operating mechanism 5 is arranged in the middle of the circuit breaker housing 1; the arc extinguishing system 7 is arranged side by side with the protection mechanism 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 with the protection mechanism and the incoming terminal 880 respectively. The circuit breaker has a reasonable internal layout design, a compact layout between components, can effectively reduce the overall size of the circuit breaker, and meets the miniaturization development trend 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 signal output of the current sampling device 112.

[0135] Preferably, the protection mechanism is the short-circuit protection mechanism 6 or the overload protection mechanism 110; when the circuit breaker comprises 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.

[0136] Preferably, as shown in FIGS. 18, 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 line terminal 880, and the line terminal 880 includes an L-pole line terminal, and the current sampling device 112 is connected in series between the short circuit protection mechanism 6 and the L-pole line terminal. Further, as shown in Figure 17 The circuit breaker housing 1 further includes a sampling device assembly groove 112a opposite the L-pole line terminal and the short circuit protection mechanism 6 at both ends of the sampling device assembly groove 112a.

[0137] In particular, the short circuit protection mechanism 6 of the present application includes an electromagnetic tripping mechanism, which triggers the operating mechanism 5 to trip when the electromagnetic force increases due to a short circuit of a large circuit. The overload protection mechanism 110 includes a bimetallic strip, which bends to trigger the lock release and the snap fit of the jumpers of the operating mechanism 5 to release the lock and make the operating mechanism 5 trip when an overload occurs, without the need for a chip to detect and participate, avoiding external interference to the chip and achieving reliable protection. However, in order to monitor the current, a corresponding current sampling device 112 is arranged, which can be output to an external monitoring device. The current sampling device 112 of the present application is arranged in an area away from the core components of the circuit breaker, which not only avoids affecting the core components of the circuit breaker, but also significantly improves the safety and reliability of the current sampling device 112.

[0138] Further, as shown in Figure 17 and 18 The circuit breaker further includes a circuit board 111 connected to the electric mechanism 3, and 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. The circuit breaker of the present application uses the above-mentioned layout to arrange the circuit board 111, which can significantly increase the installation space of the circuit board 111, reduce the size requirements for the circuit board 111, and facilitate the design and installation of the circuit board 111, and the circuit board 111 can also carry more functions.

[0139] Preferably, as shown in Figure 19 and 20 The circuit breaker further includes a circuit board slot 113 connected to the circuit board 111, and the circuit board slot 113 and the line terminal 880 are arranged at the same end of the circuit breaker housing 1, the line terminal 880 includes an L-pole line terminal and an N-pole line terminal arranged side by side and spaced apart, the circuit board slot 113 is arranged between the two line terminals 880, and the circuit board 111 obtains working power and control signals through the circuit board slot 113.

[0140] Specifically, as shown by the arrows, Figure 17 the incoming terminals 880 and outgoing terminals 881 are arranged at the upper end and lower end of the circuit breaker housing 1 respectively, two incoming terminals 880 are N-pole and L-pole incoming terminals arranged side by side on the left and right respectively; the outgoing terminals 881 and button mechanism 2 are arranged side by side on the left and right, the electric mechanism 3 is arranged below the outgoing terminals 881 and above the operating mechanism 5, the electric mechanism 3 is arranged side by side on the left and right with the button mechanism 2; the overload protection mechanism 110 and operating mechanism 5 are arranged side by side on the left and right in the circuit breaker housing 1; the arc extinguishing system 7 and short circuit protection mechanism 6 are arranged side by side on the left and right below the overload protection mechanism 110 and operating mechanism 5; the current sampling device 112 is arranged between the short circuit protection mechanism 6 and incoming terminals 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 L-pole incoming terminal, the upper end is opposite to the short circuit protection mechanism 6, and the lower end is opposite to the L-pole incoming terminal. It should be pointed out that as another embodiment, the overload protection mechanism 110 and short circuit protection mechanism 6 can be interchanged, and the current sampling device 112 is arranged between the overload protection mechanism 110 and incoming terminals 880.

[0141] It should be pointed out 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 open through the button mechanism 2, as another embodiment, the electric mechanism 3 can directly drive the circuit breaker to open and / or close through the operating mechanism, and drive the circuit breaker to open 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 application controls the motor by controlling the power supply of the motor 301, and other similar schemes that control the motor 301 through a control chip and obtain the closing position, opening position and initial position between the closing position and opening position of the trigger gear through multiple position sensors (micro switches) are all applicable to the layout structure of this embodiment.

[0142] Preferably, as shown by the arrows, Figure 21 , 23a , 23b, which is the fifth embodiment of the circuit breaker of the application, is the first embodiment of the second circuit breaker.

[0143] As shown by the arrows, Figure 21 , 23a, 23b, the circuit breaker comprises an electric mechanism 3 and an operating mechanism 5, the electric mechanism 3 and the operating mechanism 5 are drivingly matched; the electric mechanism 3 comprises a motor 301 and a gear set, the gear set is drivingly connected with the motor 301, and the gear set comprises a trigger gear; the circuit breaker further comprises a switch device, a closing circuit and an opening circuit, the switch device comprises a first switch piece 9B drivingly matched with the trigger gear, output ends of the first switch piece 9B are connected with the closing circuit and the opening circuit respectively, and the first switch piece 9B is used for connecting the closing circuit and disconnecting the opening circuit or disconnecting the closing circuit and connecting the opening circuit, and the motor 301 is connected in series in the closing circuit and the opening circuit respectively; when the circuit breaker is in an opening state and the first switch piece 9B connects the closing circuit and disconnects the opening circuit, automatic opening cannot be triggered, and automatic closing can be triggered by loading a closing voltage signal on both ends of the closing circuit outside or inside the circuit breaker, the motor 301 is powered to rotate, after the electric mechanism 3 drives the circuit breaker to close through the operating mechanism 5, the trigger gear drives the first switch piece 9B to disconnect the closing circuit and connect the opening circuit, at this time, the closing circuit cannot load the closing power on both ends to rotate the motor 301, and the circuit breaker is in a closing state;

[0144] When the circuit breaker is in the closing state and the first switch piece 9B disconnects the closing circuit and connects the opening circuit, automatic closing cannot be triggered, and automatic opening can be triggered by loading an opening voltage signal on both ends of the opening circuit outside or inside the circuit breaker, the motor 301 is driven, after the electric mechanism 3 drives the circuit breaker to open through the operating mechanism 5, the trigger gear drives the first switch piece 9B to disconnect the opening circuit and connect the closing circuit, and the motor 301 stops rotating.

[0145] Further, as shown in Figure 23a and 23b , the first switch piece 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 connected in the closing circuit and the opening circuit respectively, or the normally closed contact b0 and the normally open contact b1 are connected in the opening circuit and the closing circuit respectively. As shown in the embodiments of Figure 23a and 23b , 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 opening 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 opening circuit is connected.

[0146] Further, as shown in Figure 23a and 23bAs shown in the figure, the motor 301 is a direct current 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 motor 301, the negative terminal of 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, the positive terminal is connected to the cathode of diode D4; the common contact b3 is connected to the power terminal E0, the cathode of diode D2 and the anode of diode D4 are both connected to the power terminal E1.

[0147] Preferably, as shown in the figure, Figure 23a and 23b the closing voltage signal and the opening voltage signal are power voltage signals with opposite directions, which are working power for supplying the motor 301. Further, when the circuit breaker is closing or opening, the motor 301 always rotates in the same direction.

[0148] Preferably, as shown in the figure, Figure 21 the first switch element 9B is a micro switch, which includes a first driving rod matched with the trigger gear. Further, as shown in the figure, Figure 21 the trigger gear is the third driving gear 305-3 of the driving gear element 305, which includes a switch driving platform 305-4 arranged on one side of the third driving gear 305-3; after the motor mechanism 3 drives the circuit breaker to close, the third driving gear 305-3 also rotates and drives the switch driving platform 305-4 to press the first driving rod, so as to disconnect the closing circuit and connect the opening circuit by the first switch element 9B; after the motor mechanism 3 drives the circuit breaker to open, the third driving gear 305-3 also rotates and drives the switch driving platform 305-4 to release the first driving rod, so as to disconnect the opening circuit and connect the closing circuit by the first switch element 9B. Obviously, the trigger gear is not limited to the driving gear element 305, but also can be the first transmission gear element 303 or the second transmission gear element 304 or other gears.

[0149] Further, as shown in the figure, Figure 17 , 18 and 21, the first switch element 9B is arranged between the first driving gear 305-3 and the circuit board 111, and is connected to the circuit board 111.

[0150] Preferably, as shown in the figure, Figure 21As shown, the circuit breaker further comprises a manually operated component, the manually operated component and the electric mechanism 3 are respectively connected with the operating mechanism 5 for driving, the manually operated component drives the circuit breaker to close / open through the operating mechanism 5; the electric mechanism 3 further comprises a driving gear 305 and a driven gear 306 which are respectively pivotally arranged, the driving gear 305 is a trigger gear, the driving gear 305 is drivingly matched with the driven gear 306, the driven gear 306 is coaxially arranged with the transmission member 501 and drivingly matched with the transmission member 501; the driving gear 305 rotates from a first initial position to a first direction to engage with the driven gear 306, the driving gear 305 continues to rotate and drives the transmission member 501 to rotate to a second direction through the driven gear 306, so that the circuit breaker is closed, the driving gear 305 continues to rotate to an intermediate position to drive the first switch 9B to disconnect the closing circuit and connect the opening circuit and disengage with the driven gear 306; the driving gear 305 rotates from the intermediate position to the first direction and drives the manually operated component to act, the manually operated component drives the transmission member 501 to rotate to the first direction, so that the circuit breaker is opened, the driving gear 305 continues to rotate to the first initial position to drive the first switch 9B to disconnect the opening circuit and connect the closing circuit. Further, as shown in the figure, Figure 21 In the embodiment, the manually operated component is a button mechanism 2, and the circuit breaker is an insertion type circuit breaker.

[0151] As other embodiments, the manually operated component can also be a handle, and the circuit breaker can be a common small circuit breaker. When the circuit breaker is not provided with the manually operated 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 is provided with the electric mechanism 3, the electric mechanism 3 can directly drive the circuit breaker to automatically open / close through the operating mechanism, or can drive the manually operated component to realize automatic opening / closing.

[0152] Specifically, as shown in the figure, Figure 23a When the circuit breaker is in the open state, the first switch element 9B connects the closing circuit and disconnects the opening circuit, and the closing voltage signal (the positive electrode of the power supply terminal E0 and the negative electrode of the power supply terminal E1) is loaded between 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 in the positive direction and drives the driving gear 305 to rotate from the first initial position to the intermediate position, and the circuit breaker is closed, at the same time, the switch driving table 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 shown in the figure, Figure 23bAs shown), at this time, the closing voltage signal cannot pass through the opening circuit (due to the unidirectional conduction function of diodes D1 and D4), therefore the motor 301 stops rotating; as Figure 23b As shown, when the circuit breaker is in the closed state, the first switching element 9B connects the opening circuit and simultaneously disconnects the closing circuit. During automatic opening, the opening voltage signal (power terminal E0 connected to the negative terminal and power terminal E1 connected to the positive terminal) is applied to the first switching element 9B and both ends of the opening circuit (current flows sequentially through power terminal E1, diode D4, motor 301, diode D1, normally open contact b1, common contact b0, and power terminal E0). The motor 301 rotates forward and drives the drive gear 305 to rotate from the middle position to the first initial position, and the circuit breaker completes the opening. 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 switching element 9B, causing the first switching element 9B to disconnect the opening circuit and connect the closing circuit (e.g., ...). Figure 23a As shown in the diagram, the tripping voltage signal cannot pass through the closing circuit (due to the single-phase conduction function of diodes D2 and D3), therefore, the motor 301 stops rotating. Thus, when the circuit breaker of this invention needs to perform closing / opening operations, it is only necessary to switch the current direction or voltage direction of the power supply to the motor 301. Controlling the power supply to the motor 301 is simple and convenient, requiring no chip control and avoiding interference and influence on the chip under specific environments.

[0153] Furthermore, this embodiment can be combined with the third embodiment of the present invention. The circuit breaker also includes a manual / automatic switching device disposed inside 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 disposed on the circuit breaker operation interface 1i, located on the side of the button mounting hole and 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 open, it is in manual working mode, the motor 301 cannot be energized, and it cannot automatically open or close. When the switching switch element 9A is closed, it is in automatic working mode, and it can open and close manually and automatically at the same time. The switching switch element 9A is a micro switch.

[0154] Preferred, such as Figure 21 , 25a As shown in Figure 25b, this is the sixth embodiment of the circuit breaker of the present invention, and the second embodiment of the second type of circuit breaker.

[0155] like Figure 25a and 25bThe difference between the circuit breaker of the present embodiment and the fifth embodiment is that the closing circuit includes a power terminal E1, the 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 terminal E1; the opening circuit includes a power terminal E2, the 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 terminal E2; and the common contact b0 is connected to the power terminal E0.

[0156] Specifically, as shown in Figure 25b , the circuit breaker is in the opening state, the first switch element 9B is connected to the closing circuit, and the closing voltage signal (the power terminal E0 is connected to the positive terminal, and the power terminal E1 is connected to the negative terminal) is loaded across the first switch element 9B and the closing circuit (the current flows through the power terminal E0, the common contact b3, the normally closed contact b0, the motor 301, and the power terminal E1 in sequence), the motor 301 rotates in the forward direction and drives the driving gear member 305 to rotate from the first initial position to the intermediate position, and 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 is disconnected from the closing circuit and connected to the opening circuit (as shown in Figure 25b ), and the closing voltage signal cannot pass through the opening circuit (because the power terminal E2 is not connected, and even if the power terminal E2 is connected, the motor 301 will be short-circuited), so the motor 301 stops rotating. Figure 25a , the circuit breaker is in the closing state, the first switch element 9B is connected to the opening circuit, and the opening voltage signal (the power terminal E0 is connected to the negative terminal, and the power terminal E2 is connected to the positive terminal) is loaded across the first switch element 9B and the opening circuit (the current flows through the power terminal E2, the motor 301, the normally open contact b1, the common contact b3, and the power terminal E0 in sequence), the motor 301 rotates in the forward direction and drives the driving gear member 305 to rotate from the intermediate position to the first initial position, and the circuit breaker is opened. 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 switch element 9B, so that the first switch element 9B is disconnected from the opening circuit and connected to the closing circuit (as shown in Figure 21 ), and the opening voltage signal cannot pass through the closing circuit (because the power terminal E1 is not connected, and even if the power terminal E1 is connected, the motor 301 will be short-circuited), so the motor 301 stops rotating.

[0157] Preferably, as shown in Figure 21 , 22 , 24a-24d, it is the seventh embodiment of the circuit breaker of the present application, which is the first embodiment of the third circuit breaker.

[0158] As shown in Figure 24a , 22, 24a-24d, the difference between the circuit breaker of the present embodiment and the fifth embodiment is that the circuit breaker of the present embodiment further comprises a manual operating assembly, a closing auxiliary circuit and an opening auxiliary circuit; the switch device further comprises a second switch piece 9C which is driven in cooperation with the manual operating assembly or the operating mechanism 5, and the output end of the second switch piece 9C is connected with the closing auxiliary circuit and the opening auxiliary circuit respectively, and is used for connecting the closing auxiliary circuit and disconnecting the opening auxiliary circuit, or disconnecting the closing auxiliary circuit and connecting the opening auxiliary circuit; the manual operating assembly is connected with the operating mechanism 5 in drive; the closing auxiliary circuit and the opening auxiliary circuit are connected with the two input ends of the motor 301 respectively; the input end of the second switch piece 9C is connected with the input end of the first switch piece 9B.

[0159] As shown in Figure 24b , when the circuit breaker is in the opening state, the first switch piece 9B connects the closing circuit and the second switch piece 9C connects the opening auxiliary circuit, the closing voltage signal is loaded between the first switch piece 9B and the closing circuit in the automatic closing process, and the motor 301 drives the circuit breaker to close after the operating mechanism 5 drives the circuit breaker, as shown in Figure 24b , the trigger gear drives the first switch piece 9B to disconnect the closing circuit and connect the opening circuit, and the manual operating assembly and the operating mechanism 5 are moved to the opening position in the opening process, and the action of the manual operating assembly or the operating mechanism 5 in the opening process drives the second switch piece 9C to disconnect the opening auxiliary circuit and connect the closing auxiliary circuit.

[0160] As shown in Figure 24a , when the circuit breaker is in the closing state, the first switch piece 9B connects the opening circuit and the second switch piece 9C connects the opening auxiliary circuit, the opening voltage signal is loaded between the first switch piece 9B and the opening circuit in the automatic opening process, and the motor 301 drives the circuit breaker to open after the operating mechanism 5 drives the circuit breaker, as shown in Figure 24c , the trigger gear drives the first switch piece 9B to disconnect the opening circuit and connect the closing circuit, and the manual operating assembly and the operating mechanism 5 are moved to the closing position in the closing process, and the action of the manual operating assembly or the operating mechanism 5 in the closing process drives the second switch piece 9C to disconnect the closing auxiliary circuit and connect the opening auxiliary circuit.

[0161] When the circuit breaker is in the closing state, the first switch piece 9B connects the opening circuit and the second switch piece 9C connects the opening auxiliary circuit, the circuit breaker is opened by the manual operating assembly, the action of the manual operating assembly or the operating mechanism 5 in the opening process drives the second switch piece 9C to disconnect the opening auxiliary circuit and connect the closing auxiliary circuit, and enters the state as shown in Figure 24a ; at this time, the automatic closing is carried out, the closing voltage signal is loaded between the first switch piece 9B and the opening circuit, the motor 301 drives the trigger gear to rotate, the trigger gear drives the first switch piece 9B to disconnect the opening circuit and connect the closing circuit, and enters the state as shown in Figure 24bthe shown state, then the electric mechanism 3 drives the circuit breaker to close through the operating mechanism 5, the trigger gear drives the first switch 9B to disconnect the closing circuit and connect the opening circuit, at the same time the manual operating assembly or the operating mechanism 5 drives the second switch 9C to disconnect the closing auxiliary circuit and connect the opening auxiliary circuit, entering the state as shown in Figure 24d .

[0162] When the circuit breaker is in the opening state, the first switch 9B connects the closing circuit and the second switch 9C connects the closing auxiliary circuit, after the manual operating assembly drives the circuit breaker to close, the manual operating assembly or the operating mechanism 5 connects the opening auxiliary circuit through the action of the second switch 9C, entering the state as shown in Figure 24b ; the opening voltage signal is loaded between the first switch 9B and the closing circuit, the electric 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, entering the state as shown in Figure 24a . Figure 24a

[0163] The manual operating assembly in the embodiment is a button mechanism 2 and the circuit breaker is an inserted circuit breaker. As other embodiments, the manual operating assembly can be a handle and the circuit breaker can be a common small circuit breaker.

[0164] 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 connected in the closing circuit and the opening circuit respectively, or the normally closed contact b0 and the normally open contact b1 are connected in the opening circuit and the closing circuit respectively;

[0165] 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 connected in the closing auxiliary circuit and the opening auxiliary circuit respectively, or the normally closed contact c0 and the normally open contact c1 are connected in the opening auxiliary circuit and the closing auxiliary circuit respectively. As Figure 24a shown in the specific embodiment of Fig. 24d, the normally closed contact c0 is connected with the closing auxiliary circuit and the normally open contact c1 is connected with the opening auxiliary circuit, the common contact c3 is connected with the common contact b3; when the common contact c3 is connected with the normally closed contact c0, the closing auxiliary circuit is connected; when the common contact c3 is connected with the normally open contact, the opening auxiliary circuit is connected.

[0166] Preferably, as Figure 22 ​-24d, the motor 301 is a DC motor, the closing circuit includes a diode D3 and a power 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 terminal E1; the opening circuit includes a diode D1 and a power 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 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; the common contact b3 is connected to the common contact c3.

[0167] Preferably, as shown in Figure 22 , the second switch element 9C is arranged on the side of the connecting element 204 of the button mechanism 2 and is driven in cooperation with the connecting element 204. Further, as shown in Figure 24a , the second switch element 9C is a micro switch and is connected to the circuit board 111.

[0168] Specifically, as shown in Figure 24b , the circuit breaker is in the opening state, the first switch element 9B is connected to the closing circuit, and the second switch element 9C is connected to the closing auxiliary circuit, the closing voltage signal (the positive terminal E0 is connected to the positive terminal, and the negative terminal E1 is connected to the negative terminal) is loaded between the first switch element 9B and the closing circuit (the current flows through the positive terminal E0, the common contact b3, the normally closed contact b0, the diode D3 connected in sequence, and the positive terminal E0, the common contact c3, the normally closed contact c0 connected in sequence, flows into the motor 301, and flows out of the motor 301 through the diode D2 and the power terminal E1 connected in sequence), the motor 301 rotates in the positive direction and drives the driving gear element 305 to rotate from the first initial position to the intermediate position, and the circuit breaker completes the closing, at the same time, the switch driving table 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; At the same time, when the circuit breaker completes the closing, the driving element 501 of the operating mechanism 5 drives the connecting element 204 to act through the second connecting rod 203, the connecting element 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 .

[0169] As shown in Figure 24aAs shown, the circuit breaker is in the closed state, the first switch element 9B is connected to the opening circuit and the second switch element 9C is connected to the opening auxiliary circuit, the opening voltage signal (the negative pole of the power terminal E0 and the positive pole of the power terminal El) is loaded between the first switch element 9B and the closing circuit (the current flows into the motor 301 through the power terminal El, the diode D4 connected in sequence, and flows out of the motor 301 through the diode Dl, the normally open contact bl, the common contact b3, the power terminal E0, the diode D5, the normally open contact cl, the normally closed contact c3, the power terminal E0 connected in sequence), the motor 301 rotates in the positive direction and drives the driving gear element 305 to rotate from the middle position to the first initial position, the circuit breaker is opened, and at the same time, the switch driving table 305-4 of the third driving gear 305-3 releases the first driving 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 is opened, the driving element 501 of the operating mechanism 5 drives the connecting element 204 to act through the second connecting rod 203, the connecting element 204 releases the second driving 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 24b .

[0170] Referring to Figure 24c , the circuit breaker is in the closed state, the first switch element 9B is connected to the opening circuit and the second switch element 9C is connected to the opening auxiliary circuit, after the circuit breaker is opened by manually operating the assembly, 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 , the closing voltage signal (the positive pole of the power terminal E0 and the negative pole of the power terminal El) is loaded between the first switch element 9B and the closing circuit (the current flows into the motor 301 through the power terminal E0, the common contact c3, the normally closed contact c0, the diode D6 connected in sequence, and flows out of the motor 301 through the diode D2 and the power terminal El connected in sequence), the motor 301 rotates in the positive direction and drives the driving gear element 305 to rotate from the middle position to the first initial position, at the same time, the switch driving table 305-4 of the third driving gear 305-3 releases the first driving 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 24b ; the motor 301 continues to rotate in the positive direction, the driving gear element 305 rotates from the first initial position to the middle position, after the circuit breaker is closed, the third driving gear 305 of the driving gear element 305 drives the first switch element 9B to disconnect the closing circuit and connect the opening circuit; at the same time, when the circuit breaker is closed, the driving element 501 of the operating mechanism 5 drives the connecting element 204 to act through the second connecting rod 203, the connecting element 204 drives the second switch element 9C to disconnect the closing auxiliary circuit and connect the opening auxiliary circuit, and enters the state as shown in Figure 24a .

[0171] Referring to Figure 24b , when the circuit breaker is in the open state, the first switch element 9B connects the closing circuit and the second switch element 9C connects the opening auxiliary circuit, after the circuit breaker is closed by the manual operation assembly, the second switch element 9C disconnects the closing auxiliary circuit and connects the opening auxiliary circuit, enters the state shown in Fig. 24, the opening voltage signal (the power terminal E0 is connected to the negative pole and the power terminal E1 is connected to the positive pole) is loaded between the first switch element 9B and the closing circuit (the current flows into the motor 301 through the power terminal E1, the diode D4 connected in sequence, and flows out of the motor 301 through the diode D5, the normally open contact cl, the common contact c3, and the power terminal E1 connected in sequence), the motor 301 rotates in the positive direction and drives the driving gear element 305 to rotate from the first initial position to the intermediate position, at the same time, the switch driving table 305-4 of the third driving gear 305-3 releases 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, enters the state shown in Fig. 25; the motor 301 continues to rotate in the positive direction, and the driving gear element 305 rotates from the intermediate position to the first initial position, after the circuit breaker is opened, the third driving gear 305 of the driving gear element 305 drives the first switch element 9B to disconnect the opening circuit and connect the closing circuit; at the same time, when the circuit breaker is opened, the driving element 501 of the operating mechanism 5 drives the connecting element 204 to act through the second connecting rod 203, the connecting element 204 drives the second switch element 9C to disconnect the opening auxiliary circuit and connect the closing auxiliary circuit, enters the state shown in Fig. 26. Figure 24a Figure 21

[0172] Preferably, as shown in Figure 26a , 22 , 26a-26d, it is the eighth embodiment of the circuit breaker of the application, which is the second embodiment of the third circuit breaker.

[0173] As shown in ​ -26d, the difference between the circuit breaker of the embodiment and the seventh embodiment is that: the closing circuit includes a diode D3 and a power 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 terminal E1; the opening circuit includes a diode D1 and a power 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 terminal E2;

[0174] ​​The closing auxiliary circuit comprises a diode D6, the normally closed contact c0 is connected with the anode of the diode D6, and the cathode of the diode D6 is connected with the positive terminal; the opening auxiliary circuit comprises a diode D5, the normally open contact c1 is connected with the cathode of the diode D5, and the anode of the diode D5 is connected with the negative terminal.

[0175] The working principle of the circuit breaker of the embodiment is the same as that of the seventh embodiment, but the closing voltage signal, the opening voltage signal, the loading position and the current path are changed due to the change of the structure of the closing circuit and the opening circuit, which can be deduced by those skilled in the art, and thus the working principle of the circuit breaker of the embodiment will not be described herein.

[0176] The above is the further detailed description of the application in combination with the specific preferred embodiments, and the specific implementation of the application cannot be limited to the description. For those skilled in the art, some simple deductions or replacements can be made without departing from the concept of the application, which shall be regarded as falling within the protection scope of the application.

Claims

1. A circuit breaker, comprising a circuit breaker housing (1) and a push-button mechanism (2), an electric mechanism (3), and an operating mechanism (5) disposed within the circuit breaker housing (1); characterized in that: The button mechanism (2) drives the circuit breaker to close / open via the operating mechanism (5). The operating mechanism (5) includes a transmission component (501) pivotally mounted on the circuit breaker housing (1) and driven by the button mechanism (2). Pressing the button mechanism (2) drives the transmission component (501) to rotate in the second direction to achieve manual closing, and pulling the button mechanism (2) drives the transmission component (501) to rotate in the first direction to achieve manual opening. The first direction and the second direction are opposite to each other. The electric mechanism (3) drives the transmission component (501) to rotate to close the circuit breaker, and the electric mechanism (3) drives the transmission component (501) to rotate in the opposite direction via the button mechanism (2) to open the circuit breaker. The operating mechanism (5) further includes a rotating plate (505) pivotally mounted on the circuit breaker housing (1), a latch (503) and a latch (504) pivotally mounted on the rotating plate (505) and locked together, a third link (502) connected at both ends to the transmission component (501) and the latch (503) respectively, and a second return spring (506) for driving the rotating plate (505); the circuit breaker further includes a moving contact (1a) and a stationary contact (1b) used in conjunction, one end of the moving contact (1a) being connected to the rotating plate (505), and the stationary contact (1b) being fixedly mounted on the circuit breaker housing (1).

2. The circuit breaker according to claim 1, characterized in that: The electric mechanism (3) includes a drive gear (305) and a driven gear (306) respectively pivotally mounted on the circuit breaker housing (1). The driven gear (306) and the transmission component (501) are coaxially mounted and drive each other.

3. The circuit breaker according to claim 2, characterized in that: The drive gear (305) drives the driven gear (306) to achieve the rotation direction when the circuit breaker is closed, which is consistent with the rotation direction when the drive button mechanism (2) is opened.

4. The circuit breaker according to claim 3, characterized in that: When the circuit breaker is closed, the drive gear (305) rotates from the first initial position in the first direction to mesh with the driven gear (306). The drive gear (305) continues to rotate and drives the transmission component (501) to rotate in the second direction through the driven gear (306). After the circuit breaker is closed, the drive gear (305) continues to rotate to the middle position and disengages from the driven gear (306). When the circuit breaker is opened, the drive gear (305) rotates from the middle position in the first direction and drives the button mechanism (2) to operate. The button mechanism (2) drives the transmission component (501) to rotate in the first direction. After the circuit breaker is opened, the drive gear (305) continues to rotate to the first initial position.

5. The circuit breaker according to claim 2, characterized in that: The driven gear (306) and the transmission component (501) are either integral components or separate components.

6. The circuit breaker according to claim 2, characterized in that: The drive gear component (305) includes a first drive gear (305-1) and a drive tooth (305-20) that drive and cooperate with the driven gear (306) and the button mechanism (2) respectively; the first drive gear (305-1) and the driven gear (306) are both sector gears.

7. The circuit breaker according to claim 6, characterized in that: The electric mechanism (3) includes a motor (301), a transmission gear set, a drive gear (305), and a driven gear (306) connected in sequence. The drive gear (305) includes a first drive gear (305-1), a second drive gear (305-2), and a third drive gear (305-3) that are coaxially linked and arranged in sequence. The third drive gear (305-3) drives and cooperates with the transmission gear set. The second drive gear (305-2) is provided with a drive tooth (305-20) that drives and cooperates with the button mechanism (2).

8. The circuit breaker according to any one of claims 1-5, characterized in that: The button mechanism (2) includes a button (201) and a connector (204) that are slidably disposed on the circuit breaker housing (1), a first connecting rod (202) that is connected to the button (201) and the connector (204) at both ends respectively, and a second connecting rod (203) that is connected to the connector (204) and the transmission member (501) at both ends respectively. Pressing / pulling the button (201) drives the transmission component (501) to rotate in the second / first direction via the first connecting rod (202), the connecting component (204), and the second connecting rod (203) connected in sequence, thereby closing / opening the circuit breaker.

9. The circuit breaker according to claim 8, characterized in that: The electric mechanism (3) includes a drive gear (305), which drives the circuit breaker to trip by engaging with the connecting member (204).

10. The circuit breaker according to claim 8, characterized in that: It also includes a first reset spring (205) for driving the connector (204) to reset.

11. The circuit breaker according to claim 10, characterized in that: The connector (204) is a strip-shaped component, including a connector body (204-0), a connector first hole (204-1) and a connector second hole (204-3) respectively disposed at both ends of the connector body (204-0) and respectively cooperating with the first connecting rod (202) and the second connecting rod (203), a connector driven platform (204-4) that drives and cooperates with the drive gear component (305), a connector spring limiting boss (204-2) disposed on one side of the connector body (204-0), and a connector track boss (204-5) disposed on the connector body (204-0); The first reset spring (205) is disposed between the spring limiting boss (204-2) of the connector and the circuit breaker housing (1); the circuit breaker housing (1) also includes a connector track groove disposed thereon, and the connector track boss (204-5) is slidably disposed in the connector track groove.

12. The circuit breaker according to claim 8, characterized in that: The circuit breaker also includes a locking mechanism (4), one end of which is the driven end of the locking mechanism, protruding outside the circuit breaker housing (1), and the other end is the mating end of the locking mechanism, which is mated with the button (201) or the first link (202).

13. The circuit breaker according to claim 12, characterized in that: The drive gear (305) of the electric mechanism (3) cooperates with the connector (204), and the button (201) is provided with a button connection hole for installing the first connecting rod (202), and the button connection hole is an elongated waist-shaped hole.

14. The circuit breaker according to claim 12, characterized in that: The first reset spring (205) of the locking mechanism (4) and the button mechanism (2) are both located on the same side of the button (201) and the connector (204); the locking mechanism (4) includes a locking member pivotally mounted on the circuit breaker housing (1) in the middle, one end of the locking member is the locking mechanism engagement end, and the other end is the locking mechanism driven end.

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