breaker

Abstract

The present invention relates to the field of low-voltage electrical appliances, and in particular to a circuit breaker, comprising a circuit breaker housing, and a motorized mechanism, an operating mechanism, a movable contact connected to the operating mechanism, and a stationary contact used in conjunction with the movable contact, each of which is disposed within the circuit breaker housing. The motorized mechanism comprises a driving gear member and a driven gear, each pivotally disposed on the circuit breaker housing. The operating mechanism comprises a transmission member pivotally disposed on the circuit breaker housing, the driven gear and the transmission member being coaxially disposed and drivingly engaged. The driving gear member and the driven gear are drivingly engaged, the driven gear driving the transmission member to rotate to close the circuit breaker, and an energy storage spring is disposed between the driven gear and the transmission member. In the circuit breaker of the present invention, the energy storage spring ensures the effectiveness of circuit breaker closing, thereby extending the service life of the circuit breaker.

Description

Technical Field

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

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

[0003] First, the existing circuit breaker electric mechanism achieves automatic closing by driving the handle mechanism, and automatically opens the circuit breaker by driving the handle mechanism or by driving the lock of the operating mechanism. The corresponding matching mechanism is easy to wear, and the structure is relatively complex in order to achieve mutual non-interference between automatic opening and closing and manual opening and closing. In addition, the motor control of the existing circuit breaker electric mechanism is processed by a position sensor and a chip. The position sensor transmits the closing and opening positions of the circuit breaker to the chip, and the chip controls the motor to rotate forward or reverse to achieve closing, opening, and returning to the initial position (that is, without affecting the manual opening and closing positions of the circuit breaker). The chip is easily affected by external interference, resulting in unreliable position detection and affecting the reliability of the circuit breaker operation.

[0004] Second, the electric mechanism of the existing circuit breaker relies on hard transmission of gears. After long-term use, the structural parts are prone to wear, which often leads to improper transmission, which manifests as the circuit breaker not closing or opening properly.

[0005] 3. The existing circuit breaker is inconvenient to operate when switching between manual and automatic working modes, and the working reliability of the manual-automatic switching device is not high.

[0006] Fourth, the overall spatial dimensions of existing circuit breakers are too large, which does not conform to the trend and requirements of miniaturization development of circuit breakers.

[0007] 5. In existing circuit breakers, the control of the motor of the electric mechanism often requires complex physical structures and circuit implementations, resulting in a complex overall structure of the circuit breaker and poor reliability. Summary of the Invention

[0008] The object of the present invention is to overcome the defects of the prior art and provide a circuit breaker, wherein the energy storage spring ensures the effectiveness of closing the circuit breaker and prolongs the service life of the circuit breaker.

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

[0010] A circuit breaker includes a circuit breaker housing 1, and a motor mechanism 3, an operating mechanism 5, a movable contact 1a connected to the operating mechanism 5, and a stationary contact 1b used in conjunction with the movable contact 1a, each disposed within the circuit breaker housing 1. The motor mechanism 3 includes a driving gear 305 and a driven gear 306, each pivotally disposed on the circuit breaker housing 1. The operating mechanism 5 includes a transmission member 501 pivotally disposed on the circuit breaker housing 1. The driven gear 306 is coaxially disposed with the transmission member 501 and is in driving engagement with the transmission member 501.

[0011] The driving gear 305 cooperates with the driven gear 306 , and the driven gear 306 drives the transmission member 501 to rotate to close the circuit breaker. An energy storage spring 3 - 5 is provided between the driven gear 306 and the transmission member 501 .

[0012] Preferably, the energy storage spring 3-5 is a torsion spring, including a spring body 3-50, a first spring arm 3-51 and a second spring arm 3-52; the spring body 3-50 is arranged between the driven gear 306 and the transmission member 501, 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.

[0013] Preferably, 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 portion 306-1 arranged on one side of the driven gear body 306-2, the driven gear body 306-2 is coaxially pivoted with the transmission member 501 and arranged on the circuit breaker housing 1, the first sector gear portion 306-1 is arranged in the driven gear limiting groove 501-306, and the spring body 3-50 of the energy storage spring 3-5 is located between the driven gear body 306-2 and the transmission member 501.

[0014] Preferably, the first sector gear portion 306-1 includes a first sector gear portion head end face 306-10 and a first sector gear portion tail end face 306-11 respectively arranged at both ends thereof, and the transmission member 501 also includes a driven gear limiting groove head end face 501-6 and a driven gear limiting groove tail end face 501-4 arranged at both ends of the driven gear limiting groove 501-306, the first sector gear portion head end face 306-10 and the driven gear limiting groove head end face 501-6 are abutted against each other, and a first motion gap is provided between the first sector gear portion tail end face 306-11 and the driven gear limiting groove tail end face 501-4.

[0015] Preferably, the driven gear 306 also includes a driven gear spring limiting hole 306-3 arranged on the driven gear body 306-2, and the transmission member 501 also includes a transmission member spring limiting groove 501-5 arranged at one end of the driven gear limiting groove 501-306, and the transmission member spring limiting groove 501-5 and the driven gear limiting groove tail end face 501-4 are located at the same end of the transmission gear limiting groove 501-306; the first spring arm 3-51 is limitedly matched with the transmission member spring limiting groove 501-5, and the second spring arm 3-52 is limitedly matched with the driven gear spring limiting hole 306-3.

[0016] Preferably, the transmission member 501 also includes a transmission member main body 501-0 and a transmission member spring assembly groove 501-7 arranged on one side of the transmission member main body 501-0, and the driven gear limiting groove 501-306 is arranged on one side of the transmission member spring assembly groove 501-7; the driven gear main body 306-2 and the first sector gear part 306-1 are staggered, and the first sector gear part 306-1 is offset relative to the driven gear main body 306-2 toward the side where the transmission member 501 is located; the spring main body 3-50 is arranged in the transmission member spring assembly groove 501-7 and is limited between the driven gear body 306-2 and the transmission member main body 501-0.

[0017] Preferably, the circuit breaker further comprises a button mechanism 2 arranged in the circuit breaker housing 1, the button mechanism 2 comprising a button member 201 slidably arranged on the circuit breaker housing 1, and the button mechanism 2 is driven and connected to the transmission member 501; pressing / pulling the button member 201 drives the operating mechanism 5 to operate, thereby closing / opening the circuit breaker.

[0018] Preferably, the button mechanism 2 further includes a connecting member 204 slidably arranged on the circuit breaker housing 1, a first connecting rod 202 whose two ends are respectively connected to the button member 201 and the connecting member 204, and a second connecting rod 203 whose two ends are respectively connected to the connecting member 204 and the transmission member 501; the driving gear member 305 is driven and cooperated with the connecting member 204.

[0019] Preferably, the operating mechanism 5 also includes a rotating plate 505 pivotally set on the circuit breaker housing 1, a tripping catch 503 and a locking catch 504 pivotally set on the rotating plate 505 and locked together, a third connecting rod 502 whose two ends are respectively connected to the transmission member 501 and the tripping catch 503, and a second return spring 506 for driving the rotating plate 505; one end of the moving contact 1a is connected to the rotating plate 505.

[0020] Preferably, the transmission member 501 is a cylindrical structure, including a transmission member body 501-0, a transmission member spring assembly groove 501-7 and a driven gear limiting groove 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 respectively arranged on the transmission member body 501-0; the transmission member spring assembly groove 501-7 and the driven gear limiting groove 501-306 are located on the same side of the transmission member body 501-0, and the driven gear limiting groove 501 -306 is arranged on one side of the transmission member spring assembly groove 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 the three vertices of a triangle, the first transmission member connecting hole 501-1 is arranged close to the driven gear limiting groove 501-306, the transmission member 501 is pivoted through the transmission member shaft hole 501-3, the first transmission member connecting hole 501-1 is connected to the second connecting rod 203 of the button mechanism 2, and the second transmission member connecting hole 501-2 is connected to the third connecting rod 502 of the operating mechanism 5.

[0021] Preferably, the driven gear 306 includes a driven gear body 306-2, a first sector gear portion 306-1, and a driven gear shaft hole 306-4 and a driven gear spring limiting hole 306-3 respectively provided on the driven gear body 306-2; the driven gear body 306-2 includes a body base plate 306-20, a body limiting platform 306-21 and a body spring limiting platform 306-22 which are coaxially arranged in sequence and have decreasing diameters in sequence, and the body base plate 306-2 0 is abutted against one side of the transmission member main body 501-0 of the transmission member 501, the main body limit platform 306-21 is inserted into the transmission member spring assembly groove 501-7 of the transmission member 501, and the main body spring limit platform 306-22 is inserted into the middle of the spring body 3-50 of the energy storage spring 3-5; one end of the first sector gear portion 306-1 is respectively connected to one side of the main body substrate 306-20 connected to the main body limit platform 306-21 and the outer edge of the main body limit platform 306-21.

[0022] Preferably, the transmission member 501 further includes a travel limit groove 501-8, and the circuit breaker housing 1 further includes an in-place stop 102 arranged on one side of the transmission member 501; when the circuit breaker is in the open state, the side wall of one end of the travel limit groove 501-8 is limited and cooperated with the in-place stop 102, and when the circuit breaker is in the closed state, the side wall of the other end of the travel limit groove 501-8 is limited and cooperated with the in-place stop 102.

[0023] Preferably, the driving gear member 305 rotates from the first initial position in the first direction to engage with the driven gear 306, the driving gear member 305 continues to rotate and drives the driven gear 306 to rotate in the second direction, and the driven gear 306 drives the transmission member 501 to rotate in the second direction through the energy storage spring 3-5. After the circuit breaker is closed, the driving gear member 305 continues to rotate in the first direction and drives the driven gear 306 to rotate in the second direction relative to the transmission member 501, so that the energy storage spring 3-5 stores energy until the driving gear member 305 rotates to the middle position and disengages from the driven gear 306.

[0024] In the circuit breaker of the present invention, an energy storage spring is provided between the driven gear of the electric mechanism and the transmission member of the operating mechanism. After the circuit breaker is closed, the driving gear member of the electric mechanism drives the driven gear to rotate in a second direction relative to the transmission member, causing the energy storage spring to store energy, thereby ensuring that the circuit breaker is fully closed. That is, the circuit breaker is effectively closed, thereby improving the user's power safety. In particular, after long-term use of the electric mechanism, the gears may wear and match each other due to errors, or errors may occur in circuit board position detection, resulting in the circuit breaker not being able to automatically close in place. The energy storage spring of the present invention can reliably solve the above problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic structural diagram of the circuit breaker of the present invention, showing at least the specific structures of the button mechanism, the electric mechanism and the operating mechanism;

[0026] Figure 2 It is a structural schematic diagram of the connecting piece of the present invention;

[0027] Figure 3 It is a structural schematic diagram of the driving gear member of the present invention;

[0028] Figure 4 This is a schematic diagram of the assembly relationship between the driven gear, energy storage spring and transmission member of the present invention;

[0029] Figure 5 1 is a schematic structural diagram of the driven gear of the present invention;

[0030] Figure 6 is a schematic structural diagram of the transmission member of the present invention, showing at least the positional relationship between the first transmission member connecting hole, the second transmission member connecting hole, and the transmission member shaft hole;

[0031] Figure 7 It is a schematic structural diagram of the transmission member of the present invention, showing at least the positional relationship between the energy storage spring assembly groove, the driven gear limiting groove and the transmission member spring limiting groove;

[0032] Figure 8 It is a structural schematic diagram of the energy storage spring of the present invention;

[0033] Figure 9 1 is a schematic structural diagram of a circuit breaker according to the present invention, wherein the circuit breaker is in an open state and the driving gear is in a first initial position;

[0034] Figure 10 1 is a schematic structural diagram of a circuit breaker according to the present invention, wherein the circuit breaker is in an open state, and the driving gear member rotates from a first initial position to engage with the driven gear member;

[0035] Figure 11 Schematic diagram of the structure of the circuit breaker of the present invention, the circuit breaker is in the closing process, and the moving contact and the static contact are closed;

[0036] Figure 12 Schematic diagram of the structure of the circuit breaker of the present invention, the circuit breaker is in the closed state, and the driving gear is in the middle position;

[0037] Figure 13 This is a schematic diagram of the coordination between the driving gear and the closing position stop in the present invention;

[0038] Figure 14 This is a schematic diagram of the assembly structure of the manual-automatic switching device of the present invention;

[0039] Figure 15 It is a structural schematic diagram of the circuit breaker operation interface of the circuit breaker housing of the present invention;

[0040] Figure 16 1 is a schematic structural diagram of the manual-automatic switching device of the present invention, illustrating the coordination relationship between the manual-automatic switching device and the switching element;

[0041] Figure 17 is a schematic structural diagram of the circuit breaker of the present invention, which at least shows the distribution relationship of the various components of the circuit breaker within the circuit breaker housing;

[0042] Figure 18 is a schematic structural diagram of the circuit breaker of the present invention, which at least shows the positional relationship between the circuit board and other components of the circuit breaker;

[0043] Figure 19 This is a schematic diagram of the positional relationship between the circuit board, the incoming terminal, and the circuit board slot of the present invention;

[0044] Figure 20 This is a schematic diagram of the positional relationship between the incoming terminal and the circuit board slot of the present invention;

[0045] Figure 21 is a schematic structural diagram of the circuit breaker of the present invention, which at least shows the positional relationship and the matching relationship between the driving gear component and the first switch component;

[0046] Figure 22 is a schematic structural diagram of the circuit breaker of the present invention, which at least shows the positional relationship and the matching relationship between the connecting member and the second switch member;

[0047] Figure 23a 1 is a schematic diagram of a first embodiment of a control circuit for a motor according to the present invention, wherein the circuit breaker is in an open state and a closing voltage signal is applied to the first switch element and the closing circuit;

[0048] Figure 23b 1 is a schematic diagram of a first embodiment of a control circuit for a motor according to the present invention, wherein the circuit breaker is in a closed state and an opening voltage signal is applied to the first switch element and the opening circuit;

[0049] Figure 24a Schematic diagram of a second embodiment of the control circuit for a motor according to the present invention. In this case, the circuit breaker is in the open state, the first switch element connects to the closing circuit, the second switch element connects to the closing auxiliary circuit, and a closing voltage signal is applied to both ends of the first switch element and the closing circuit.

[0050] Figure 24b Schematic diagram of a second embodiment of the control circuit for a motor according to the present invention. In this case, the circuit breaker is in the closed state, the first switch element is connected to the opening circuit, the second switch element is connected to the opening auxiliary circuit, and a opening voltage signal is applied to both ends of the first switch element and the opening circuit.

[0051] Figure 24c This is a schematic diagram of a second embodiment of the control circuit for a motor according to the present invention. In this case, the circuit breaker has been switched to the open state by the manual operating assembly. The first switch element connects the opening circuit, the second switch element connects the closing auxiliary circuit, and a closing voltage signal is applied to both ends of the first switch element and the closing circuit.

[0052] Figure 24d This is a schematic diagram of a second embodiment of the control circuit for a motor according to the present invention. In this case, the circuit breaker has been switched to the closed state by the manual operating assembly. The first switch element connects the closing circuit, the second switch element connects the opening auxiliary circuit, and the opening voltage signal is applied to both ends of the first switch element and the opening circuit.

[0053] Figure 25a 2 is a schematic diagram of a third embodiment of a control circuit for a motor according to the present invention, wherein the circuit breaker is in an open state and a closing voltage signal is applied to the first switch element and the closing circuit.

[0054] Figure 25b 2 is a schematic diagram of a third embodiment of a control circuit for a motor according to the present invention, wherein the circuit breaker is in a closed state and an opening voltage signal is applied to the first switch element and the opening circuit.

[0055] Figure 26aSchematic diagram of a fourth embodiment of a control circuit for a motor according to the present invention. In this case, the circuit breaker is in the open state, the first switch element connects to the closing circuit, the second switch element connects to the closing auxiliary circuit, and a closing voltage signal is applied to both ends of the first switch element and the closing circuit.

[0056] Figure 26b 2 is a schematic diagram of a fourth embodiment of a control circuit for a motor according to the present invention. In this case, the circuit breaker is in a closed state, the first switch element is connected to the opening circuit, the second switch element is connected to the opening auxiliary circuit, and a opening voltage signal is applied to both ends of the first switch element and the opening circuit.

[0057] Figure 26c This is a schematic diagram of a fourth embodiment of a control circuit for a motor according to the present invention. In this case, the circuit breaker has been switched to the open state by a manual operating assembly. The first switch element connects the opening circuit, the second switch element connects the closing auxiliary circuit, and a closing voltage signal is applied to both ends of the first switch element and the closing circuit.

[0058] Figure 26d This is a schematic diagram of the fourth embodiment of the control circuit of the electric motor of the present invention. At this time, the circuit breaker has been driven to switch to the closed state by the manual operation component. The first switch element is connected to the closing circuit, and the second switch element is connected to the opening auxiliary circuit. The opening voltage signal is loaded at both ends of the first switch element and the opening circuit. DETAILED DESCRIPTION

[0059] The following is combined with Figure 1-26d The following examples are provided to further illustrate the specific implementation of the circuit breaker of the present invention. The circuit breaker of the present invention is not limited to the description of the following examples.

[0060] The present invention discloses a circuit breaker, which includes a circuit breaker housing 1 and a button mechanism 2, an electric mechanism 3, and an operating mechanism 5 arranged in the circuit breaker housing 1; a moving contact 1a connected to the operating mechanism 5, and a static contact 1b used in conjunction with the moving contact 1a; operating the button mechanism 2 can drive the circuit breaker to close / open through the operating mechanism 5, thereby realizing manual opening and closing; the electric mechanism 3 cooperates with the button mechanism 2 and / or the operating mechanism 5 to drive the circuit breaker to close / open (electric opening / closing), thereby realizing automatic opening and closing. Furthermore, the circuit breaker of the present invention also includes 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 respectively cooperate with the operating mechanism 5 to drive. When a short circuit or overload fault occurs in the circuit breaker, the short-circuit protection mechanism 6 and the overload protection mechanism 110 drive the operating mechanism 5 to trip, thereby disconnecting the moving contact 1a and the static contact 1b of the circuit breaker.

[0061] The following is a first circuit breaker disclosed in the present invention:

[0062] like Figure 1 、 9 -As shown in Figure 12, the present invention discloses a circuit breaker, which includes a circuit breaker housing 1 and a button mechanism 2, an electric mechanism 3, and an operating mechanism 5 arranged in the circuit breaker housing 1; operating the button mechanism 2 can drive the circuit breaker to close / open through the operating mechanism 5; the electric mechanism 3 cooperates with the button mechanism 2 and the operating mechanism 5, and the electric mechanism 3 drives the circuit breaker to close through the operating mechanism 5, and the electric mechanism 3 drives the circuit breaker to open through the button mechanism 2. The operating mechanism 5 includes a transmission member 501 pivotally arranged on the circuit breaker housing 1 and connected to the button mechanism 2. Pressing the button mechanism 2 drives the transmission member 501 to rotate in the closing direction to realize manual closing, and pulling the button mechanism 2 drives the transmission member 501 to rotate in the opposite direction to realize manual opening; the electric mechanism 3 drives the transmission member 5 to rotate to close the circuit breaker (electric closing), and the electric mechanism 3 drives the transmission member 501 to rotate in the opposite direction through the button mechanism 2 to open the circuit breaker (electric opening). Further, as Figure 1 、 9 As shown in FIG. 12 , the electric mechanism 3 includes a driving gear 305 and a driven gear 306 respectively pivotally mounted on the circuit breaker housing 1. The driving gear 305 and the driven gear 306 are driven in cooperation with each other. The driven gear 306 is coaxially arranged with the transmission member 501 and driven in cooperation with each other. The driving gear 305 and the driven gear 306 are driven in cooperation with each other. The driven gear 306 drives the transmission member 501 to rotate in the closing direction to close the circuit breaker. The driving gear 305 is driven in cooperation with the button mechanism 2. The button mechanism 2 drives the transmission member 501 to rotate in the opposite direction to open the circuit breaker, thereby realizing automatic opening and closing. The circuit breaker of the present invention includes an electric mechanism for realizing automatic opening and closing of the circuit breaker. The closing operation is realized by the cooperation of the electric mechanism and the operating mechanism, and the opening operation is realized by the cooperation of the electric mechanism and the button mechanism. This simplifies the structure of the electric opening and closing and prolongs the service life of the circuit breaker.

[0063] Furthermore, as one of the improvements of the present invention, the driving gear member 305 drives the driven gear 306 to achieve the rotation direction when closing the circuit breaker, which is consistent with the rotation direction when driving the button mechanism 2 to achieve opening. That is, during the automatic opening and closing process, the motor of the electric mechanism 3 always rotates in one direction, which is conducive to simplifying the control process of the electric mechanism 3. A specific embodiment is that when closing the circuit breaker, the driving gear member 305 rotates from the first initial position to the first direction until it engages with the driven gear 306, and the driving gear member 306 continues to rotate and drives the transmission member 501 to rotate in the second direction through the driven gear 306, so that after the circuit breaker is closed, the driving gear member 305 continues to rotate to the intermediate position (the intermediate position refers to the position where the gear member 305 is disengaged from the driven gear 306 and the gear member 305 does not drive the connecting member 204 in the button mechanism 2) and disengages from the driven gear 306; when opening the circuit breaker, the driving gear member 305 rotates from the intermediate position to the first direction and drives the button mechanism 2 to operate, and the button mechanism 2 drives the transmission member 501 to rotate in the first direction, so that after the circuit breaker is opened, the driving gear member 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). In the circuit breaker of the present invention, the closing operation is achieved through the cooperation of the electric mechanism 3 and the operating mechanism 5, and the opening operation is achieved through the cooperation of the electric mechanism 3 and the button mechanism 2. Firstly, compared with the circuit breaker in the prior art in which both the closing and opening operations are achieved through the cooperation of the electric mechanism 3 and the operating mechanism 5, the wear of the operating mechanism 5 is effectively slowed down, thereby facilitating the extension of the service life of the circuit breaker; secondly, during the closing / opening process, the driving gear 305 of the electric mechanism 3 always rotates in the first direction, that is, during the closing / opening process, the motor 301 of the electric mechanism 3 does not need to change the direction of rotation, which is conducive to simplifying the control process of the electric mechanism 3; thirdly, the motor 301 of the electric mechanism 3 does not need to frequently switch between forward rotation and reverse rotation, thereby reducing the probability of damage to the motor 301 and facilitating the extension of the service life of the electric mechanism 3.

[0064] Preferably, Figure 1As shown, the button mechanism 2 includes a button member 201 and a connecting member 204, each slidably disposed on the circuit breaker housing 1; a first connecting rod 202, each connected to the button member 2 and the connecting member 204 at both ends; and a second connecting member 203, each connected to the connecting member 204 and the transmission member 501 at both ends. It should be noted that the button member 201, the first connecting rod 202, and the connecting member 204 of the button mechanism 2 can also be designed as an integrated component, thereby reducing the number of parts. To facilitate the convenient coordination of the button mechanism 2 with other mechanisms and without affecting coordination with the electric mechanism 3, the button mechanism 2 of the present invention is preferably a combination of the button member 201, the first connecting rod 202, the connecting member 204, and the second connecting rod 203. Furthermore, an indicator (not shown) for indicating the opening and closing status is also provided within the button member 201. The button member 201 is provided with an indicator window. During the opening and closing operation, the button member 201 drives the indicator to swing or slide to display the opening and closing status of the circuit breaker.

[0065] Further, such as Figure 17 As shown, the circuit breaker further includes a locking mechanism 4, one end of which is an actuated end protruding from the exterior of the circuit breaker housing 1, and the other end is a mating end for mating with the button mechanism 2. An improvement of the present invention is that the mating end of the locking mechanism 4 mates with the button member 201 or the first connecting rod 202, while the driving gear member 305 of the electric mechanism 3 mates with the connecting member 204. The button mechanism 2 utilizes a combination of the button member 201, the first connecting rod 202, and the connecting member 204, facilitating simultaneous mating of the button mechanism 2 with both the locking mechanism 4 and the electric mechanism 3. It should be noted that the circuit breaker of this embodiment is a plug-in circuit breaker, which is inserted and installed in the circuit breaker assembly position of the cabinet. The locking mechanism 4 cooperates with the button mechanism 2 and the housing of the circuit breaker assembly position to achieve locking and / or unlocking of the circuit breaker after it is installed in the circuit breaker assembly position, and / or prevent the circuit breaker from being installed incorrectly, and / or prevent the circuit breaker from being installed in the circuit breaker assembly position or being removed from the circuit breaker assembly position in the closed state, and / or prevent the circuit breaker from being closed when it is not installed in the circuit breaker assembly position. The button mechanism 2 of the present invention is suitable for cooperating with each locking mechanism 4, which all fall within the scope of protection of the present invention.

[0066] For example, one embodiment of the locking mechanism is that a locking hole that cooperates with the activated end of the locking mechanism is provided on the circuit breaker assembly position of the cabinet. After the circuit breaker is installed in place, the activated end of the locking mechanism 4 protrudes from the outside of the circuit breaker housing 1 and protrudes into the locking hole of the cabinet, preventing the circuit breaker from being pulled out of the cabinet at will. When the button member 201 is pulled, the button member 201 or the first connecting rod 202 or the connecting member 204 or the indicator can drive the locking mechanism's mating end to retract the activated end of the locking mechanism into the circuit breaker housing 1, so that the circuit breaker can be pulled out of the circuit breaker assembly position. Another embodiment of the locking mechanism is that when the circuit breaker is not installed in the circuit breaker assembly position, the active end of the locking mechanism is squeezed by the cabinet wall to retract into the inside of the circuit breaker housing 1, and the mating end of the locking mechanism is limitedly engaged with the button member 201 or the first connecting rod 202 or the connecting member 204 or the indicator member to prevent the button member 201 from moving in the closing direction, making it impossible to close the circuit breaker when it is not installed in the circuit breaker assembly position; when the circuit breaker is installed in the circuit breaker assembly position, the active end of the locking mechanism is no longer squeezed by the shell of the circuit breaker assembly position to move toward the outside of the circuit breaker housing 1, so that the mating end of the locking mechanism is released from the limited engagement with the button member 201 or the first connecting rod 202 or the connecting member 204, and the button member 201 can move in the closing direction and close the circuit breaker through the operating mechanism 5.

[0067] Preferably, Figure 4 、 9As shown in Figure 12, the circuit breaker of the present invention also includes an energy storage spring 3-5 disposed between the driven gear 306 and the transmission member 501; this is used to compensate for incomplete automatic closing and improve the reliability of automatic closing. The provision of the energy storage spring 3-5 serves the following purposes: firstly, to allow a certain margin of travel for the sector gears of the driving gear 305 and the driven gear 306 to fit together; secondly, even if the gears and structural components experience mismatch due to wear, this margin of travel can still ensure reliable closing. Specifically, the driving gear member 305 rotates from the first initial position in the first direction to engage with the driven gear 306, the driving gear member 305 continues to rotate and drives the driven gear 306 to rotate in the second direction, and the driven gear 306 drives the transmission member 501 to rotate in the second direction through the energy storage spring 3-5. After the circuit breaker is closed, the driving gear member 305 continues to rotate in the first direction and drives the driven gear 306 to rotate in the second direction relative to the transmission member 501, causing the energy storage spring 3-5 to store energy until the driving gear member 305 rotates to the middle position and disengages from the driven gear 306. In the circuit breaker of the present invention, an energy storage spring 3-5 is provided between the driven gear 306 of the electric mechanism 3 and the transmission member 501 of the operating mechanism 5. After the circuit breaker is closed, the driving gear member 305 of the electric mechanism 3 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 in place, that is, ensuring that the circuit breaker is effectively closed, and improving the user's power safety. In particular, after long-term use of the electric mechanism 3, the gears may have matching errors with each other due to wear or errors in the position detection of the circuit board, resulting in the problem that the circuit breaker cannot be automatically closed in place. The energy storage spring of the present invention can reliably solve the above problem. Further, if Figure 9 and 12 As shown, when the circuit breaker is in the closed state, the driving gear member 305 rotates from the middle position to the first direction and drives the button mechanism 2 to operate. The button mechanism 2 drives the transmission member 501 to rotate in the first direction, so that after the circuit breaker is opened, the driving gear member 305 continues to rotate to the first initial position.

[0068] The following is a second circuit breaker disclosed in the present invention:

[0069] like Figure 21 、 23a, 23b, 25a and 25b, the circuit breaker of the present invention includes an electric mechanism 3 and an operating mechanism 5 for realizing automatic opening and closing, the electric mechanism 3 and the operating mechanism 5 drive cooperation (including direct and indirect drive cooperation), the electric mechanism 3 includes a motor 301 and a gear set, the gear set is driven and connected to the motor 301, and the gear set includes a trigger gear; the circuit breaker also includes a switching device, a closing circuit, and an opening circuit; the switching device includes a first switch 9B driven and matched with the trigger gear, the output ends of the first switch 9B are respectively connected to the closing circuit and the opening circuit, and the motor 301 is respectively connected in series with the closing circuit. circuit and opening circuit; when the circuit breaker is in the opening state and the first switch 9B connects the closing circuit and disconnects the opening circuit at the same time, a closing voltage signal is loaded at both ends of 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. When the circuit breaker is in the closing state and the first switch 9B connects the opening circuit and disconnects the closing circuit at the same time, a opening voltage signal is loaded at both ends of the first switch 9B and the opening circuit. After 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. The circuit breaker of the present invention, after completing the closing / opening operation, is driven by the trigger gear to drive the first switch 9B to switch the closing circuit / opening circuit. The control principle is simple. When a voltage signal is applied to the electric mechanism 3, the electric mechanism 3 will operate. After completing the closing / opening operation, the trigger gear drives the first switch 9B to switch the closing circuit and the opening circuit, which can stop the motor. There is no need for the complex circuit structure and control principle of the prior art for detecting 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 also making the operating performance of the circuit breaker of the present invention more reliable. It should be pointed out that the above-mentioned motor of the present invention is suitable for purely electric closing and opening operations.

[0070] The following is a third circuit breaker disclosed in the present invention:

[0071] Preferably, Figure 21 、 22 As shown in Figures 24a-24d and 26a-26d, the circuit breaker of the present invention further includes a manual operating component, a closing auxiliary circuit, and an opening auxiliary circuit. The manual operating component drives the circuit breaker to close / open via the operating mechanism 5. The switch device further includes a second switch element 9C that cooperates with the manual operating component or the operating mechanism 5. The output end of the second switch element 9C is respectively connected to the closing auxiliary circuit and the opening auxiliary circuit. The manual operating 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 ends of the motor 301. The input end of the second switch element 9C is connected to the input end of the first switch element 9B.

[0072] When the circuit breaker is in the open state, the first switch 9B connects the closing circuit and the second switch 9C connects the closing auxiliary circuit, a closing voltage signal is applied to both ends of 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. At the same time, the action of the manual operating component or the operating mechanism 5 when closing drives the second switch 9C to disconnect the closing auxiliary circuit and connect the opening auxiliary circuit.

[0073] When the circuit breaker is in the closed state, the first switch 9B connects the opening circuit and the second switch 9C connects the opening auxiliary circuit, a tripping voltage signal is applied to both ends of the first switch 9B and the opening circuit. After 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. At the same time, the opening action of the manual operating component or the operating mechanism 5 drives the second switch 9C to disconnect the opening auxiliary circuit and connect the closing auxiliary circuit.

[0074] When the circuit breaker is in the closed state, the first switch element 9B connects the opening circuit and the second switch element 9C connects the opening auxiliary circuit. After the circuit breaker is opened by the manual operating component, the action of the manual operating component or the operating mechanism 5 during opening drives the second switch element 9C to disconnect the opening auxiliary circuit and connect the closing auxiliary circuit. A closing voltage signal is applied to both ends of the first switch element 9B and the opening circuit, and the motor 301 drives the trigger gear to rotate. The trigger gear drives the first switch element 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 element 9B to disconnect the closing circuit and connect the opening circuit. At the same time, the manual operating component or the operating mechanism 5 drives the second switch element 9C to disconnect the closing auxiliary circuit and connect the opening auxiliary circuit.

[0075] 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 closing auxiliary circuit. After the circuit breaker is closed by the manual operating component, the action of the manual operating component or the operating mechanism 5 when closing drives the second switch element 9C to disconnect the closing auxiliary circuit and connect the opening auxiliary circuit. An opening voltage signal is applied to both ends of the first switch element 9B and the closing circuit, and the motor 301 drives the trigger gear to rotate. The trigger gear drives the first switch element 9B to disconnect the closing circuit and connect the opening circuit. Then, the electric mechanism 3 drives the circuit breaker to open, and the trigger gear drives the first switch element 9B to disconnect the opening circuit and connect the closing circuit. At the same time, the manual operating component or the operating mechanism 5 drives the second switch element 9C to disconnect the opening auxiliary circuit and connect the closing auxiliary circuit.

[0076] The circuit breaker of the present invention can normally close or open the circuit breaker by loading the closing voltage signal and the opening voltage signal, whether the current state of the circuit breaker (i.e., the open or closed state) corresponds to or is inconsistent with the position of the trigger gear. It should be pointed out that the situation of "the current state of the circuit breaker is inconsistent with the position of the trigger gear" is caused by the electric mechanism 3 driving the circuit breaker to close or open through the operating mechanism 5, and then opening or closing the circuit breaker through the manual operating component; if the circuit breaker is only driven to close or open by the electric mechanism 3 through the operating mechanism 5, the current state of the circuit breaker and the position of the trigger gear are always consistent. Therefore, through the cooperation of the trigger gear, the first switch 9B, the closing circuit, the opening circuit, the second switch 9C, the closing auxiliary circuit, and the opening auxiliary circuit, the circuit breaker of the present invention can be compatible with manual / automatic closing and opening operations at the same time.

[0077] It should be pointed out that the second and third types of circuit breakers can be implemented on the basis of the first type of circuit breaker. Specifically: the second type of circuit breaker can be equipped with a first switch 9B, a closing circuit, and an opening circuit on the first type of circuit breaker, and the first switch 9B is driven in conjunction with the trigger gear of the electric mechanism 3; the third type of circuit breaker can be equipped with a second switch 9C, a closing auxiliary circuit, and an opening auxiliary circuit on the basis of the second type of circuit breaker, and the second switch 9C is driven in conjunction with the manual operating component or the operating mechanism 5.

[0078] like Figure 1-20 FIG. 1 shows the first embodiment of the circuit breaker of the present invention, which is the first embodiment of the first type of circuit breaker.

[0079] like Figure 1 、 9 As shown in Figure 12, the circuit breaker of the present invention includes a circuit breaker housing 1 and a button mechanism 2, an electric mechanism 3 and an operating mechanism 5 arranged in the circuit breaker housing 1. The button mechanism 2 is driven and connected to the operating mechanism 5, and can drive the circuit breaker to close / open through the operating mechanism 5 to achieve manual opening and closing; the electric mechanism 3 cooperates with the button mechanism 2 and / or the operating mechanism 5 to drive the circuit breaker to close / open through the operating mechanism 5 to achieve automatic opening and closing.

[0080] Preferably, Figure 1As shown, the electric mechanism 3 cooperates with the transmission member 501 of the operating mechanism 5 to close the circuit breaker, and cooperates with the button mechanism 2 to open the circuit breaker. The electric mechanism 3 includes a driving gear member 305 and a driven gear 306 respectively pivotally arranged on the circuit breaker housing 1. The driving gear member 305 cooperates with the driven gear 306 and the button mechanism 2 respectively; the operating mechanism 5 includes a transmission member 501 pivotally arranged on the circuit breaker housing 1 and drivingly connected to the button mechanism 2. The driven gear 306 is coaxially arranged with the transmission member 501 and drives in cooperation; the driving gear member 305 moves from a first initial position (such as Figure 9 ) rotates in the first direction until it engages with the driven gear 306 (as shown Figure 10 As shown), the driving gear 305 continues to rotate and drives the transmission member 501 to rotate in the second direction through the driven gear 306, so that after the circuit breaker is closed, the driving gear 305 continues to rotate to the middle position (as shown). Figure 12 As shown) and disengages from the driven gear 306; the driving gear member 305 rotates from the intermediate position to the first direction and drives the button mechanism 2 to operate, and the button mechanism 2 drives the transmission member 5 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.

[0081] The driving gear 305 drives the driven gear 306 to realize the rotation direction of the circuit breaker when closing, which is consistent with the rotation direction of the driving button mechanism 2 when opening, which is conducive to simplifying the control process of the electric mechanism 3. Figure 1 、 9 -12, the first direction is counterclockwise, and the second direction is clockwise. The driving gear 305 maintains counterclockwise rotation (i.e., always rotates in the same direction) during the process of driving the circuit breaker to close and open. When the driving gear 305 is in the first initial position or the intermediate position, it disengages from the driven gear 306. When the driving gear 305 rotates to the first initial position or the intermediate position, the driving gear 305 or the driven gear 306 triggers the disconnection of the power supply circuit of the electric mechanism 3, de-energizing the motor 301 and stopping the driving gear 305. This greatly simplifies the control process of the electric mechanism 3. Of course, it is also possible for the driving gear 305 or the driven gear 306 to trigger a position sensor when the driving gear 305 rotates to the first initial position or the intermediate position, transmitting the position information to the control chip, which then controls the motor to stop rotating. However, this is relatively complex to implement.

[0082] Preferably, the driven gear 306 and the transmission member 501 are integral components or separate components.

[0083] Preferably, the electric mechanism 3 includes an electric motor 301 and a gear set that are sequentially connected and driven, and the gear set includes a transmission gear set, a driving gear 305 and a driven gear 306. Figure 1 FIG. 1 shows an embodiment of the electric mechanism 3. The electric mechanism 3 includes a motor 301, a worm 302, a first transmission gear 303, a second transmission gear 304, and a driving gear 305, which are sequentially driven and engaged with each other, and a driven gear 306 that is driven and engaged with the driving gear 305. The transmission gear set includes the first transmission gear 303 and the second transmission gear 304, which are each pivotally mounted on the circuit breaker housing 1. Obviously, the number of transmission gears in the transmission gear set can be reduced or increased as needed.

[0084] Preferably, Figure 3 As shown, the driving gear member 305 includes a first driving gear 305-1 and a driving gear 305-20 that are respectively driven and matched with the driven gear 306 and the button mechanism 2. Specifically, the driving gear member 305 includes a first driving gear 305-1, a second driving gear 305-2 and a third driving gear 305-3 that are coaxially linked and arranged in sequence. The third driving gear 305-3 is driven and matched with the second driving gear member 304 of the transmission gear group. The first driving gear 305-1 and the second driving gear 305-2 are respectively driven and matched with the driven gear 306 and the button mechanism 2. Further, as shown Figure 1 、 4 As shown, the first driving gear 305-1 and the driven gear 306 are both sector gears; the second driving gear 305-2 is provided with a driving tooth 305-20 that cooperates with the button mechanism 2. When the switch is closed, the driving gear 305 rotates in the first direction, the first driving gear 305-1 is engaged with the driven gear 306, and the driving tooth 305-20 avoids the button mechanism 2. After the switch is closed, the first driving gear 305-1 is disengaged from the driven gear 306; when the switch is opened, the driving gear 305 continues to rotate in the first direction, and the driving tooth 305-20 cooperates with the button mechanism 2 to achieve opening. At this time, the first driving gear 305-1 and the driven gear 306 remain disengaged. Obviously, the driving tooth 305-20 can be Figure 3 The illustrated embodiment includes only one drive gear 305-20, but a sector gear having multiple drive gears may be provided as needed. The connecting member 204 on the button mechanism 2 may be provided with teeth to cooperate with the second drive gear 305-2 having multiple drive gears. Alternatively, the drive gear 305-20 may also be provided on the first drive gear 305-1.

[0085] Preferably, Figure 1As shown, the button mechanism 2 includes a button member 201 and a connecting member 204 respectively slidably arranged on the circuit breaker housing 1, a first connecting rod 202 connected to the button member 201 and the connecting member 204 at both ends, and a second connecting rod 203 connected to the connecting member 204 and the transmission member 501 at both ends; pressing / pulling the button member 201 drives the transmission member 501 to rotate in the second direction / first direction through the first connecting rod 202, the connecting member 204, and the second connecting rod 203 connected in sequence, thereby closing / opening the circuit breaker. Figure 1 As shown, the second driving gear 305 - 2 of the driving gear member 305 is drivingly engaged with the connecting member 204 .

[0086] Specifically, such as Figure 1 、 9 -12, the button member 201, the first connecting rod 202, the connecting member 204 and the second connecting rod 203 of the button mechanism 2 are arranged in a straight line from top to bottom. When the button member 201 is pulled upward / pressed downward, the button member 201 drives the transmission member 501 to rotate counterclockwise / clockwise through the first connecting rod 202, the connecting member 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 member 204 to move upward, and the connecting member 204 drives the transmission member 501 to rotate clockwise through the second connecting rod 203, so that the circuit breaker is opened.

[0087] Preferably, Figure 17 As shown, the circuit breaker of the present invention also includes a locking mechanism 4, one end of which is a locking mechanism actuated end, protruding from the outside of the circuit breaker housing 1, and the other end is a locking mechanism mating end, which is limitedly mated with the button mechanism 2. The locking mechanism 4 includes a locking member pivotally mounted on the circuit breaker housing 1, with the two ends of the locking member being a locking mechanism actuated end and a locking mechanism mating end. Specifically, as shown in FIG. Figure 17 In the direction shown, the upper end and the lower end of the locking member of the locking mechanism 4 are respectively the actuated end and the mating end of the locking mechanism. When the button member 201 or the first connecting rod 202 is limitedly engaged with the mating end of the locking mechanism, the button member 201 cannot move downward (in the closing direction) and the circuit breaker cannot be closed.

[0088] Preferably, the first connecting rod 202 and the second connecting rod 203 are both U-shaped connecting rods.

[0089] Preferably, Figure 1 As shown, the button mechanism 2 further includes a first reset spring 205 for driving the connector 204 to reset, which is used to drive the button mechanism 2 to reset after the circuit breaker is tripped; the circuit breaker housing 1 further includes a connector track groove, and the connector 204 slides linearly along the connector track groove.

[0090] Preferably, Figure 2 FIG. 1 is an embodiment of the connecting member 204 .

[0091] like Figure 2 As shown, the connecting member 204 is a strip-shaped member, including a connecting member body 204-0, a connecting member first hole 204-1 and a connecting member second hole 204-3 respectively provided at both ends of the connecting member body 204-0 and respectively cooperating with the first connecting rod 202 and the second connecting rod 203, a connecting member driven table 204-4 drivingly cooperating with the driving teeth 305-20 of the driving gear member 305, a connecting member spring limiting boss 204-2 provided on one side of the connecting member body 204-0, and a connecting member track boss 204-5 provided on the connecting member body 204-0. Further, as Figure 2 As shown, the connector track boss 204-5 and the connector first hole 204-1 are arranged at the same end of the connector body 204-0, and the connector track boss 204-5 is arranged on the side of the connector body 204-0 facing the bottom plate of the circuit breaker housing 1; the connector active surface 204-4 and the connector second hole 204-3 are arranged at the same end of the connector body 204-0, and the connector active surface 204-4 is arranged facing the transmission member 501 of the operating mechanism 5; the connector spring limiting boss 204-2 is arranged on the side of the connector body 204-0 away from the electric mechanism 3.

[0092] Specifically, such as Figure 2 In the direction shown, the first connecting member hole 204-1 and the connecting member track boss 204-5 are located at the left end of the connecting member body 204-0, and the connecting member track boss 204-5 is arranged on the lower side of the connecting member body 204-0; the second connecting member hole 204-3 and the connecting member active table 204-4 are located at the right end of the connecting member body 204-0, and the connecting member active table 204-4 is arranged facing the right side; the connecting member spring limiting boss 204-2 is arranged on the rear side of the connecting member body 204-0.

[0093] like Figure 1 As shown, the first return spring 205 is arranged between the connector spring limiting boss 204-2 and the circuit breaker housing 1; the connector track boss 204-5 is slidably arranged in the connector track groove. The connector 204 and the circuit breaker housing 1 are effectively limited by the cooperation between the connector track boss 204-5 and the connector track groove, ensuring the stability of the connector 204 during the sliding process, thereby improving the stability of the circuit breaker performance. Further, 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 direction shown, the locking member 4 and the first return spring 205 are both located on the right side of the button member 201 and the connecting member 204 .

[0094] Preferably, Figure 1 As shown, one end of the button member 201 is an operating end located outside the circuit breaker housing 1, and the other end extends into the circuit breaker housing 1. A button member connecting hole for mounting the first connecting rod 202 is provided on the other end. The button member connecting hole is a long waist-shaped hole, so that pressing the button member 201 causes one end to have an idle stroke. When the circuit breaker needs to be pulled out of the installation cabinet after the trip, the button member 201 of the button mechanism 2 is pulled, so that the locking mechanism 4 is completely retracted into the circuit breaker housing, so as to contact the locking mechanism 4 and cooperate with the housing of the circuit breaker assembly position to pull the circuit breaker out of the circuit breaker assembly position.

[0095] Preferably, Figure 1 FIG. 1 shows an embodiment of the operating mechanism 5 .

[0096] like Figure 1 As shown, the operating mechanism 5 includes a transmission member 501 and a rotating plate 505, each pivotally mounted on the circuit breaker housing 1; a trip latch 503 and a lock latch 504, each pivotally mounted on the rotating plate 505 and engaging with the other; a third connecting rod 502, each connected at its ends to the transmission member 501 and the trip latch 503; and a second return spring 506 for driving the rotating plate 505. The second return spring 506 is disposed between the rotating plate 505 and the circuit breaker housing 1. The circuit breaker also includes a static contact 1b and a movable contact 1a connected to the operating mechanism 5. One end of the movable contact 1a is connected to the rotating plate 505, while the static contact 1b is fixed to the circuit breaker housing 1. The structure, principle, and operating process of the operating mechanism 5 of this embodiment are similar to those of the prior art and will not be further described here. Of course, the operating mechanism 5 of the circuit breaker of the present invention can also adopt other structures.

[0097] Preferably, Figure 4-8 FIG. 1 shows a second embodiment of the circuit breaker of the present invention, which is also the second embodiment of the first type of circuit breaker.

[0098] like Figure 4As shown, the circuit breaker of this embodiment differs from the first embodiment in that it also includes an energy storage spring 3-5 disposed between the driven gear 306 and the transmission member 501; this is used to compensate for incomplete automatic closing and improve the reliability of automatic closing. The provision of the energy storage spring 3-5 serves to firstly allow a certain margin of fit between the sector gears of the driving gear member 305 and the driven gear 306, and secondly, ensures reliable closing even if the gears experience mismatch due to wear. Specifically, the driving gear member 305 rotates from the first initial position in the first direction to engage with the driven gear 306, the driving gear member 305 continues to rotate and drives the driven gear 306 to rotate in the second direction, and the driven gear 306 drives the transmission member 501 to rotate in the second direction through the energy storage spring 3-5. After the circuit breaker is closed, the driving gear member 305 continues to rotate in the first direction and drives the driven gear 306 to rotate in the second direction relative to the transmission member 501, so that the energy storage spring 3-5 stores energy and the moving and static contacts are in reliable contact, until the driving gear member 305 rotates to the middle position and disengages from the driven gear 306, and the driven gear 306 is reset relative to the transmission member 501 under the action of the energy storage spring 3-5 releasing energy (the energy storage spring 3-5 releases energy, which will give the driven gear 306 a force to rotate in the first direction relative to the transmission member 501).

[0099] Preferably, Figure 4 and 8 As shown, the energy storage spring 3-5 is a torsion spring, including a spring body 3-50, a first spring arm 3-51 and a second spring arm 3-52; the spring body 3-50 is arranged between the driven gear 306 and the transmission member 501 and is coaxial with the driven gear 306 and the transmission member 501, the first spring arm 3-51 is limited in position with the transmission member 501, and the second spring arm 3-52 is limited in position with the driven gear 306. Further, as Figure 4-7 As shown, 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 portion 306-1 arranged on one side of the driven gear body 306-2, the driven gear body 306-2 and the transmission member 501 are coaxially pivoted and arranged on the circuit breaker housing 1, the first sector gear portion 306-1 is arranged in the driven gear limiting groove 501-306, one end of the first sector gear portion 306-1 is abutted against the side wall 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 portion 306-1 and the side wall 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.

[0100] Preferably, Figure 4-7As shown, the first sector gear portion 306-1 includes a first sector gear portion head end face 306-10 and a first sector gear portion tail end face 306-11 respectively arranged at both ends thereof, and the transmission member 501 also includes a driven gear limiting groove head end face 501-6 and a driven gear limiting groove tail end face 501-4 arranged at both ends of the driven gear limiting groove 501-306, the first sector gear portion head end face 306-10 and the driven gear limiting groove head end face 501-6 are abutted against each other, and a first motion gap is provided between the first sector gear portion tail end face 306-11 and the driven gear limiting groove tail end face 501-4.

[0101] Specifically, such as Figure 4 As shown, when the circuit breaker is in the closed state or the open state, the energy storage spring 3-5 causes the first sector gear portion head end face 306-10 of the driven gear 306 to abut against the first end face 501-6 of the driven gear slot, and a first movement gap is formed between the first sector gear portion tail end face 306-11 and the driven gear limit slot tail end face 501-4; Figure 9-12 As shown, the driving gear member 305 rotates in the first direction (counterclockwise) until it meshes with the first sector gear portion 306-1 of the driven gear 306 (as shown in FIG. Figure 10 As shown), the driving gear 305 continues to rotate and drives the driven gear 306 to rotate in the second direction (clockwise) through the first sector gear portion 306-1. The driven gear 306 drives the transmission member 501 to rotate in the second direction (clockwise) through the energy storage spring 3-5, and the operating mechanism 5 drives the moving contact 1a and the static contact 1b to close (as shown). Figure 11 As shown), after the circuit breaker is closed, the transmission member 501 is fixed in position and no longer rotates, as shown in FIG. Figure 11 As shown, at this time, the driving gear member 305 is still engaged with the first sector gear portion 306-1, and is preferably set to be disengaged when there is only one irregular tooth left. The driving gear member 305 continues to rotate and drives the driven gear 306 to rotate in the second direction (clockwise) relative to the transmission member 501 through the first sector gear portion 306-1, so that the energy storage spring 3-5 stores energy, and the energy storage spring 3-5 applies the stored energy to the transmission member 501 (that is, applies a thrust to the transmission member 501 to rotate in the first direction), ensuring that the circuit breaker can still be effectively closed due to structural component size deviation or gear wear of the motor mechanism. Figure 12 As shown, after the circuit breaker is closed, the driving gear 305 continues to rotate to the middle position and disengages from the first sector gear portion 306-1, and the driven gear 306 will be reset under the energy release action of the energy storage spring 3-5 (that is, the first end face 306-10 of the first sector gear portion is restored to a state of abutting against the first end face 501-6 of the driven gear limit groove).

[0102] Preferably, Figure 4As shown, the driven gear 306 also includes a driven gear spring limiting hole 306-3 arranged on the driven gear body 306-2, and the transmission member 501 also includes a transmission member spring limiting groove 501-5 arranged at one end of the driven gear limiting groove 501-306, and the transmission member spring limiting groove 501-5 and the driven gear limiting groove tail end face 501-4 are located at the same end of the transmission gear limiting groove 501-306; the first spring arm 3-51 is limitedly matched with the transmission member spring limiting groove 501-5, and the second spring arm 3-52 is limitedly matched with the driven gear spring limiting hole 306-3.

[0103] Preferably, Figure 4-7 As shown, the transmission member 501 also includes a transmission member body 501-0 and a transmission member spring assembly groove 501-7 arranged on one side of the transmission member body 501-0, and the driven gear limiting groove 501-306 is arranged on one side of the transmission member spring assembly groove 501-7; the driven gear body 306-2 and the first sector gear part 306-1 are staggered, 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 groove 501-7 and is limited between the driven gear body 306-2 and the transmission member body 501-0.

[0104] Preferably, Figure 6 and 7 FIG. 5 shows an embodiment of the transmission member 501 .

[0105] like Figure 6 and 7 As shown, the transmission member 501 is a cylindrical structure, including a transmission member body 501-0, a transmission member spring assembly groove 501-7 and a driven gear limiting groove 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 respectively arranged on the transmission member body 501-0; the transmission member spring assembly groove 501-7 and the driven gear limiting groove 501-306 are located on the same side of the transmission member body 501-0, and the driven gear limiting groove 501- 306 is arranged on one side of the transmission member spring assembly groove 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 the three vertices of a triangle, the first transmission member connecting hole 501-1 is arranged close to the driven gear limiting groove 501-306, the transmission member 501 is pivoted through the transmission member shaft hole 501-3, the first transmission member connecting hole 501-1 is connected to the second connecting rod 203 of the button mechanism 2, and the second transmission member connecting hole 501-2 is connected to the third connecting rod 502 of the operating mechanism 5.

[0106] Preferably, Figure 7 and 13 As shown, the transmission member 501 further includes a travel limit groove 501-8, and the travel limit groove 501-8 and the driven gear limit groove 501-306 are respectively arranged on both sides of the transmission member spring assembly groove 501-7; the circuit breaker housing 1 further includes an in-place stop 102 arranged on one side of the transmission member 501; when the circuit breaker is in the open state, the side wall of one end of the travel limit groove 501-8 is limited and matched with the in-place stop 102, and when the circuit breaker is in the closed state, the side wall of the other end of the travel limit groove 501-8 is limited and matched with the in-place stop 102. Further, as Figure 13 As shown, when the circuit breaker is closed, one end of the travel limit slot 501-8 (as shown in FIG. Figure 13 The direction shown is the lower end of the travel limit slot 501-8) and the position stop 102 are limited. When the circuit breaker is opened, the other end of the travel limit slot 501-8 (such as Figure 13 The direction shown is the upper end of the travel limit groove 501-8) and the position stop 102. The travel limit groove 501-8 and the position stop 102 cooperate to effectively limit the rotational travel of the transmission member 501, preventing the transmission member 501 from excessive rotation and damaging the operating mechanism 5.

[0107] Preferably, Figure 4 and 5 FIG. 1 is an embodiment of the driven gear 306 .

[0108] like Figure 4 and 5 As shown, the driven gear 306 includes a driven gear body 306-2, a first sector gear portion 306-1, and a driven gear shaft hole 306-4 and a driven gear spring limiting hole 306-3 respectively provided on the driven gear body 306-2; the driven gear body 306-2 includes a body base plate 306-20, a body limiting platform 306-21 and a body spring limiting platform 306-22 which are coaxially arranged in sequence and have decreasing diameters in sequence, and the body base plate 306-2 0 is against one side of the transmission member main body 501-0 of the transmission member 501, the main body limit platform 306-21 is inserted into the transmission member spring assembly groove 501-7 of the transmission member 501, and the main body spring limit platform 306-22 is inserted into the middle of the spring body 3-50 of the energy storage spring 3-5; one end of the first sector gear part 306-1 is respectively connected to the side of the main body substrate 306-20 connected to the main body limit platform 306-21 and the outer edge of the main body limit platform 306-21. Further, as Figure 4 and 5 As shown, the driven gear spring limiting hole 306 - 3 is located between the driven gear shaft hole 306 - 4 and the first sector gear portion 306 - 1 .

[0109] Preferably, Figure 14-16 FIG. 1 shows a third embodiment of the circuit breaker of the present invention, which is also the third embodiment of the first type of circuit breaker.

[0110] like Figure 14-16 As shown, the circuit breaker of this embodiment differs from the first embodiment in that the circuit breaker further includes a manual-automatic switching device disposed within the circuit breaker housing 1. The circuit breaker is a plug-in type circuit breaker. The circuit breaker housing 1 is substantially a parallelepiped structure and includes a circuit breaker operation interface 1i disposed at one end thereof, a button assembly hole disposed on the circuit breaker operation interface 1i, and an output terminal 881 disposed thereon. One end of the button mechanism 2 is inserted into the button assembly hole, and an input terminal 880 is disposed at the other end of the circuit breaker housing 1. The circuit breaker further includes a manual-automatic switching device disposed within the circuit breaker housing 1. The manual-automatic switching device includes a switching operating element 7a and a switching element 9A. The switching operating element 7a cooperates with the switching element 9A in a driving manner. The switching element 9A is used to switch the circuit breaker between a manual operating mode and an automatic operating mode. The automatic operating mode of the circuit breaker is activated or deactivated by controlling the operating state of the electric mechanism 3. The switching operating element 7a is disposed on the circuit breaker operation interface 1i, located on one side of the button assembly hole, and is movably connected to the circuit breaker housing 1. The manual-automatic switching device of the circuit breaker of the present invention includes a switching operating element 7a and a switching switch element 9A that are driven in coordination, and has a simple structure and is easy to operate. The switching operating element 7a, one end of the button mechanism 2, and the output terminal 881 are all located on the circuit breaker operation interface 1i, which provides a large operating space, facilitates user operation of the circuit breaker, and is easy to observe.

[0111] Further, such as Figure 14-16 As shown, the manual-automatic switching device also includes a switching transmission element 8a, and the switching operating element 7a drives the switching switch element 9A to operate via the switching transmission element 8a. The switching operating element 7a is a knob rotatably mounted on the circuit breaker housing 1, comprising a knob connecting portion 70a, and knob operating ends 71a and a knob driving portion 72a respectively disposed on either side 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 to the knob driving portion 72a, and the other end is drivingly engaged with the switching switch element 9A. Turning the knob drives the switching transmission element 8a to move toward or away from the switching switch element 9A, pressing or releasing the driving rod of the micro switch.

[0112] Further, such as Figure 16As shown, the knob drive portion 720a includes a knob drive inclined surface 720a that engages with the switching transmission element 8a. The knob drive inclined surface 720a gradually deviates toward the switching transmission element 8a from one end thereof near the knob connection portion 70a to the other end. All components of the manual-automatic switching device utilize mechanical transmission, ensuring reliable transmission and a simple structure for easy assembly.

[0113] It should be pointed out that the electric mechanism 3 has two working states, namely: normal working state and disengaged working state; in the automatic working mode, the electric mechanism 3 is in normal working state, 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 opening and closing and automatic opening and closing; in the manual working mode, the electric mechanism 3 is in the disengaged working state, the power supply circuit of the electric mechanism 3 is cut off, and / or the electric mechanism 3 cannot receive the closing / opening signal, and can only be manually opened and closed.

[0114] Preferably, the switching element 9a is connected in series in the power supply circuit of the electric mechanism 3. By cutting off or connecting the switching element 9a, the power supply circuit of the electric mechanism 3 can be cut off or connected, thereby realizing the switching between the manual working mode, that is, only manual opening and closing, and no automatic opening and closing (the power supply circuit of the electric mechanism 3 is cut off) and the automatic working mode, that is, the automatic working mode is enabled, and manual opening and closing and automatic opening and closing (the power supply circuit of the electric mechanism 3 is connected) can be switched between.

[0115] Preferably, the circuit breaker also includes a circuit board 111 connected to the electric mechanism 3, and the switching element 9a is arranged on the circuit board 111 and is connected to the power control system of the electric mechanism 3 through the circuit board 111. The power control system cuts off or connects the working power of the electric mechanism 3 through the switching element 9a, thereby realizing the switching of the circuit breaker between the manual working mode and the automatic working mode.

[0116] In addition, the switching switch element 9A can also be used to connect to the control chip to transmit the switching control signal. The control chip realizes the switching of the circuit breaker between the manual working mode and the automatic working mode according to the high and low levels of the switching control signal. When the circuit breaker is in the manual working mode, even if the control chip receives the automatic closing control signal, it does not control the electric mechanism to perform the automatic closing operation.

[0117] Preferably, Figure 15As shown, the outlet terminal 881 is a plug-in type terminal. The circuit breaker housing 1 also includes an outlet hole 1o and a wire removal hole 1d of the outlet terminal 881 provided on the circuit breaker operation interface 1i. The outlet hole 1o and the wire removal hole 1d are used in a one-to-one manner. The wire is inserted through the outlet hole 1o and connected to the outlet terminal 881, 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 wire removal hole 1d and the switching operating element 7a are all located on the same side of the button assembly hole. The switching operating element 7a is located between a wire removal hole 1d and the button assembly hole. Further, as Figure 15 As shown, the circuit breaker housing 1 includes two wire outlet holes 1o and two wire removal holes 1d, which are respectively the first wire outlet hole and the first wire removal hole used in conjunction with each other, and the second wire outlet hole and the second wire removal hole used in conjunction with each other. The first wire removal hole and the second wire removal hole are arranged near the button assembly hole, and the switching operating element 7a is located in the space surrounded by the first wire removal hole, the second wire outlet hole and the button assembly hole. Further, as Figure 15 As shown, the first wire outlet hole, the first wire removal hole, and the switching operating element 7a are sequentially arranged side by side on one side of the circuit breaker operation interface 1i, and the second wire removal hole and the second wire outlet hole are sequentially arranged side by side on the other side of the circuit breaker operation interface 1i.

[0118] Specifically, such as Figure 14 and 16 In the direction shown, the upper end of the switching transmission element 8a is driven and cooperated with the switching operating element 7a, and the lower end is driven and cooperated with the switching switch element 9a; the switching operating element 7a is rotated to drive the switching transmission element 8a to move downward, and the switching transmission element 8a presses the driving rod of the micro switch (switching switch element 9a) to realize signal switching, thereby driving the circuit breaker to switch between manual working mode and automatic working mode; the first wire outlet hole, the first wire removal hole, and the switching operating element 7a are arranged side by side from left to right on the upper side of the circuit breaker operating interface 1i, and the second wire removal hole and the second wire outlet hole are arranged side by side from left to right on the lower side of the circuit breaker operating interface 1i.

[0119] It should be noted that the switching operating element 7a is not limited to a knob, but can also be a button or a sliding paddle. Specifically, if the switching operating element 7a is a button, pressing or pulling the button drives the switching transmission element 8a to move toward or away from the switching switch element 9a, thereby triggering or releasing the switching switch element 9a. Alternatively, if the switching operating element 7a is a sliding paddle, it is slidably disposed on the circuit breaker operation interface 1i of the circuit breaker housing 1. By sliding the sliding paddle, the switching transmission element 8a is driven to move toward or away from the switching switch element 9a, thereby triggering or releasing the switching switch element 9a.

[0120] Preferably, Figure 16As shown, the knob driving portion 72a includes a knob driving inclined surface 720a that cooperates with the switching transmission element 8a. The knob driving inclined surface 720a gradually slopes from its end connected to the knob connecting portion 70a to the end of the knob driving inclined surface 720a closer to the switching element 9a. Furthermore, the knob driving inclined surface 720a is a spiral inclined surface, sloping from the upper end to the lower end.

[0121] It should be noted that the knob drive portion 72a may also be threadedly connected to the switching transmission element 8a without the knob drive inclined surface 720a. The switching transmission element 8a cannot rotate, and turning the knob can also drive the switching transmission element 8a toward or away from the switching switch element 9a. Of course, there are many other implementations of the switching operating element 7a, as long as they can drive the switching transmission element 8a toward or away from the switching switch element 9a. These will not be detailed here.

[0122] Preferably, Figure 14 and 16 As shown, the manual-automatic switching device further includes a transmission element return spring 10 for driving the switching transmission element 8a to return.

[0123] Preferably, Figure 16 FIG. 1 shows an embodiment of the switching transmission element 8 a.

[0124] like Figure 16 As shown, the switching transmission element 8a is a rod-shaped member, including a transmission element driven portion 80a, a transmission element spring stopper 82a and a transmission element transmission portion 81a connected in sequence. The transmission element driven portion 80a is driven in conjunction with the knob driving portion 720a, and the transmission element transmission portion 81a is driven in conjunction with the switching switch element 9A. Figure 14 and 16 As shown, the transmission element reset spring 10 is sleeved on the transmission element transmission part 81a, with one end being limitedly matched with the transmission element spring limit platform 82a, and the other end being limitedly matched with the circuit breaker housing 1.

[0125] Preferably, Figure 14As shown, the circuit breaker housing 1 also includes a transmission element assembly slot provided on one side of the button mechanism 2, the transmission element assembly slot includes an upper assembly slot section 103-1, a lower assembly slot section 103-2, and an assembly slot tail section connected in sequence, the width of the lower assembly slot section 103-2 is greater than the width of the upper assembly slot section 103-1, and the width of the lower assembly slot section 103-2 is greater than the width of the assembly slot tail section, the connection between the lower assembly slot section 103-2 and the upper assembly slot section 103-1 forms a first step structure, and the connection between the lower assembly slot section 103-2 and the assembly slot tail section is A second step structure is formed, the driven part 80a of the transmission element is arranged in the middle of the upper section 103-1 of the assembly groove, the transmission part 81a of the transmission element is arranged in the middle of the lower section 103-2 of the assembly groove, the transmission element spring limit platform 82a is limited and matched with the first step structure, the transmission element return spring 10 is arranged in the middle of the lower section 103-2 of the assembly groove, one end is limited and matched with the transmission element spring limit platform 82a, and the other end is limited and matched with the second step structure, and the free end of the transmission part 81a of the transmission element passes through the tail section of the assembly groove and is limited and matched with the switching element 9A.

[0126] Specifically, such as Figure 14 As shown, the upper section 103 - 1 of the assembly slot, the lower section 103 - 2 of the assembly slot and the tail section of the assembly slot are arranged in sequence from top to bottom and are connected in sequence; the transmission element assembly slot is located as a whole between the button mechanism 2 and the output terminal 881 .

[0127] It should be noted that, in this embodiment, the electric mechanism 3 directly drives the circuit breaker to close through the operating mechanism, and drives the circuit breaker to open through the button mechanism 2. As other embodiments, the electric mechanism 3 can also 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, both of which are applicable to the manual-automatic switching device of the present invention.

[0128] Preferably, Figure 1 、 17 -20 shows the fourth embodiment of the circuit breaker of the present invention, which is the fourth embodiment of the first type of circuit breaker.

[0129] Preferably, Figure 1 、 17As shown in Figure 18, the circuit breaker includes a circuit breaker housing 1, and a button mechanism 2, an electric mechanism 3, an operating mechanism 5, a protection mechanism, an arc extinguishing system 7, a current sampling device 112, an incoming terminal 880, and an outgoing terminal 881 arranged in the circuit breaker housing 1; the button mechanism 2 drives the circuit breaker to close / open through the operating mechanism 5; the electric mechanism 3 drives the circuit breaker to close / open through the button mechanism 2 and / or the operating mechanism 5; the protection mechanism cooperates with the operating mechanism 5 to trigger the circuit breaker to trip; the incoming terminal 880 and the outgoing terminal 881 are respectively arranged at both ends of the circuit breaker housing 1 The operating mechanism 5 is arranged in the middle of the circuit breaker housing 1; the arc extinguishing system 7 and the protection mechanism are arranged side by side between the operating mechanism 5 and the incoming terminal 880; the electric mechanism 3 is arranged between the outgoing terminal 881 and the operating mechanism 5, and the electric mechanism 3 and the outgoing terminal 881 are arranged on the same side of the button mechanism 2; one end of the button mechanism 2 protrudes outside the end of the circuit breaker housing 1 provided with the outgoing terminal 881; the current sampling device 112 is arranged between the protection mechanism and the incoming terminal 880, and the two ends of the sampling device 112 are electrically connected to the protection mechanism and the incoming terminal 880 respectively. The circuit breaker of the present invention has a reasonable internal layout design and a compact layout between the various components, which can effectively reduce the overall specifications of the circuit breaker and conform to the development trend of miniaturization of circuit breakers; 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 derivation of the signal of the current sampling device 112.

[0130] Preferably, the protection mechanism is a short-circuit protection mechanism 6 or an overload protection mechanism 110; when the circuit breaker includes both a short-circuit protection mechanism 6 and an 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.

[0131] Preferably, Figure 17In the preferred embodiment shown, the operating mechanism 5 and the overload protection mechanism 110 are arranged side by side in the middle of the circuit breaker housing 1, the arc extinguishing system 7 and the short-circuit protection mechanism 6 are arranged side by side, the overload protection mechanism 110 and the arc extinguishing system 7 are located on one side of the circuit breaker housing 1, and the operating mechanism 5 and the short-circuit protection mechanism 6 are located on the other side of the circuit breaker housing 1; the current sampling device 112 is arranged between the short-circuit protection mechanism 6 and the incoming terminal 880, the incoming terminal 880 includes an L-pole incoming terminal, and the current sampling device 112 is connected in series between the short-circuit protection mechanism 6 and the L-pole incoming terminal. Further, as Figure 17 As shown, the circuit breaker housing 1 further includes a sampling device assembly groove 112a, and two ends of the sampling device assembly groove 112a are respectively opposite to the L-pole incoming terminal and the short-circuit protection mechanism 6.

[0132] In particular, the short-circuit protection mechanism 6 of the present invention includes an electromagnetic tripping mechanism. When a short circuit occurs, the electromagnetic force increases, triggering the operating mechanism 5 to trip. The overload protection mechanism 110 includes a bimetallic strip. When overloaded, the bimetallic strip bends, triggering the lock of the operating mechanism 5 to release the lock and trip the snap fit, causing the operating mechanism 5 to trip. No chip is required for detection and participation, thus avoiding external interference with the chip and achieving reliable protection. However, in order to monitor the current, a corresponding current sampling device 112 is provided, which can output to an external monitoring device. The present invention places the current sampling device 112 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.

[0133] Further, such as Figure 17 and 18 As shown, the circuit breaker of the present invention further includes a circuit board 111 connected to the motor mechanism 3. The button mechanism 2, motor mechanism 3, operating mechanism 5, overload protection mechanism 110, arc extinguishing system 7, and 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 invention adopts the above-mentioned layout to arrange the circuit board 111, which can significantly increase the installation space of the circuit board 111 and reduce the size requirements of the circuit board 111. Firstly, the design and installation of the circuit board 111 are more convenient, and secondly, the circuit board 111 can also carry more functions.

[0134] Preferably, Figure 19 and 20 As shown, the circuit breaker also includes a circuit board slot 113 connected to the circuit board 111. The circuit board slot 113 and the incoming line terminal 880 are arranged at the same end of the circuit breaker housing 1. The incoming line terminal 880 includes an L-pole incoming line terminal and an N-pole incoming line terminal arranged side by side and spaced apart. The circuit board slot 113 is arranged between the two incoming line terminals 880. The circuit board 111 obtains working power and control signals through the circuit board slot 113.

[0135] Specifically, such as Figure 17 In the direction shown, the incoming terminal 880 and the outgoing terminal 881 are respectively arranged at the upper and lower ends of the circuit breaker housing 1, and the two incoming terminals 880 are respectively arranged side by side as the N-pole incoming terminal and the L-pole incoming terminal; the outgoing terminal 881 and the button mechanism 2 are arranged side by side, and the electric mechanism 3 is arranged below the outgoing terminal 881 and above the operating mechanism 5, and the electric mechanism 3 and the button mechanism 2 are arranged side by side; the overload protection mechanism 110 and the operating mechanism 5 are arranged side by side in the circuit breaker housing 1; the arc extinguishing system 7 and the short-circuit protection mechanism 6 are arranged side by side below the overload protection mechanism 110 and the operating mechanism 5; the current sampling device 112 is arranged between the short-circuit protection mechanism 6 and the incoming terminal 880, and is located on the right side of the circuit breaker housing 1; the sampling device assembly slot 112 is arranged between the short-circuit protection mechanism 6 and the L-pole incoming terminal, with the upper end opposite the short-circuit protection mechanism 6 and the lower end opposite the L-pole incoming terminal. It should be noted that, as another embodiment, the overload protection mechanism 110 and the short-circuit protection mechanism 6 can be interchanged, and the current sampling device 112 is then disposed between the overload protection mechanism 110 and the incoming terminal 880 .

[0136] It should be noted that in this embodiment, the electric mechanism 3 directly drives the circuit breaker to close via the operating mechanism and drives the circuit breaker to open via the button mechanism 2. As other embodiments, the electric mechanism 3 can also directly drive the circuit breaker to open and / or close via the operating mechanism and drive the circuit breaker to open and / or close via the button mechanism 2, all of which are applicable to the layout structure of this embodiment. In addition, the electric mechanism 3 in the fifth embodiment of the present invention controls the motor by controlling the power supply of the motor 301. Other similar solutions that control the motor 301 through a control chip and obtain the closing position, opening position, and initial position between the closing position and the opening position of the trigger gear through multiple position sensors (micro switches) are also applicable to the layout structure of this embodiment.

[0137] Preferably, Figure 21 、 23a 23b shows the fifth embodiment of the circuit breaker of the present invention, which is the first embodiment of the second type of circuit breaker.

[0138] like Figure 21 、 23aAs shown in Figures 23b and 23c, the circuit breaker of the present invention includes a motor mechanism 3 and an operating mechanism 5, which are driven in conjunction with each other; the motor mechanism 3 includes a motor 301 and a gear set, which is driven and connected to the motor 301, and the gear set includes a trigger gear; the circuit breaker also includes a switching device, a closing circuit, and an opening circuit, and the switching device includes a first switch member 9B driven and matched with the trigger gear, and the output ends of the first switch member 9B are respectively connected to the closing circuit and the opening circuit, for connecting the closing circuit and disconnecting the opening circuit at the same time, or disconnecting the closing circuit and connecting the opening circuit at the same time. , the motor 301 is connected in series in the closing circuit and the opening circuit respectively; when the circuit breaker is in the opening state and the first switch 9B connects the closing circuit and disconnects the opening circuit at the same time, the automatic opening cannot be triggered. The closing voltage signal is applied to both ends of the closing circuit externally or internally by the circuit breaker to trigger the automatic closing. The motor 301 is energized and rotates. After 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 this time, the closing power applied to both ends of the closing circuit can no longer rotate the motor 301, and the circuit breaker is in the closed state;

[0139] When the circuit breaker is in the closed state and the first switch 9B disconnects the closing circuit and connects the opening circuit, the automatic closing cannot be triggered. The circuit breaker loads a tripping voltage signal at both ends of the opening circuit outside or inside the circuit breaker to trigger the automatic opening, driving the motor 301. After the electric mechanism 3 drives the circuit breaker to open through the operating mechanism 5, the trigger gear drives the first switch 9B to disconnect the opening circuit and connect the closing circuit, and the motor 301 stops rotating.

[0140] Further, such as Figure 23a and 23b As shown, the first switch element 9B includes a common contact b3, a normally closed contact b0 and a normally open contact b1, wherein the normally closed contact b0 and the normally open contact b1 are connected to the closing circuit and the opening circuit respectively, or the normally closed contact b0 and the normally open contact b1 are connected to the opening circuit and the closing circuit respectively. Figure 23a and 23b In the embodiment shown, 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 connected to the normally closed contact b0, the closing circuit is connected, and when the common contact b3 is connected to the normally open contact b1, the opening circuit is connected.

[0141] Further, such as Figure 23a and 23bAs shown, the motor 301 is a DC motor, the closing circuit includes a diode D3 and a diode D2, the normally closed contact b0 is connected to the anode of the diode D3, the cathode of the diode D3 is connected to the positive terminal of the motor 301, and the negative terminal of the motor 301 is connected to the anode of the diode D2; the opening circuit includes a diode D1 and a diode D4, the normally open contact b1 is connected to the cathode of the diode D1, the anode of the diode D1 is connected to the negative terminal, and the positive terminal is connected to the cathode of the diode D4; the common contact b3 is connected to the power terminal E0, and the cathode of the diode D2 and the anode of the diode D4 are both connected to the power terminal E1.

[0142] Preferably, Figure 23a and 23b As shown, the closing voltage signal and the opening voltage signal are power supply voltage signals with opposite directions, which are the working power supplies for the motor 301. Furthermore, when the circuit breaker is closed or opened, the motor 301 always rotates in the same direction.

[0143] Preferably, Figure 21 As shown, the first switch 9B is a micro switch, including a first driving rod that cooperates with the trigger gear. Figure 21 As shown, the trigger gear is the third drive gear 305-3 of the drive gear member 305, which includes a switch drive platform 305-4 disposed on one side of the third drive gear 305-3. After the electric mechanism 3 drives the circuit breaker to close via the operating mechanism 5, the third drive gear 305-3 also rotates and drives the switch drive platform 305-4 to press against the first drive rod, thereby causing the first switch member 9B to disconnect the closing circuit and connect the opening circuit. After the electric mechanism 3 drives the circuit breaker to open via the operating mechanism 5, the third drive gear 305-3 also rotates and drives the switch drive platform 305-4 to release the first drive rod, thereby causing the first switch member 9B to disconnect the opening circuit and connect the closing circuit. Obviously, the trigger gear is not limited to the drive gear member 305, and can also be the first transmission gear member 303, the second transmission gear member 304, or other gears.

[0144] Further, such as Figure 17 、 18 As shown in FIG. 21 , the first switch element 9B is disposed between the first driving gear 305 - 3 and the circuit board 111 , and is connected to the circuit board 111 .

[0145] Preferably, Figure 21As shown, the circuit breaker also includes a manual operating component, the manual operating component and the electric mechanism 3 are respectively connected to the operating mechanism 5, and the manual operating component drives the circuit breaker to close / open through the operating mechanism 5; the electric mechanism 3 also includes a driving gear member 305 and a driven gear 306 that are respectively pivotally arranged, the driving gear member 305 is a trigger gear, the driving gear member 305 is driven and matched with the manual gear 306, and the driven gear 306 is coaxially arranged with the transmission member 501 and driven and matched; the driving gear member 305 rotates from the first initial position to the first direction until it is engaged with the driven gear 306, and the driving gear member 305 is rotated from the first initial position to the first direction until it is engaged with the driven gear 306. The driving gear 305 continues to rotate and drives the transmission member 501 to rotate in the second direction through the driven gear 306, so that after the circuit breaker is closed, the driving gear 305 continues to rotate to the middle position to drive the first switch member 9B to disconnect the closing circuit and connect the opening circuit and disengage from the driven gear 306; the driving gear 305 rotates from the middle position to the first direction and drives the manual operating component to operate, and the manual operating component drives the transmission member 501 to rotate in the first direction, so that after the circuit breaker is opened, the driving gear 305 continues to rotate to the first initial position to drive the first switch member 9B to disconnect the opening circuit and connect the closing circuit. Further, as Figure 21 As shown, the manual operation component in this embodiment is a button mechanism 2, and the circuit breaker is a plug-in circuit breaker.

[0146] As another embodiment, the manual operating assembly may also be a handle, and the circuit breaker may be a common miniature circuit breaker. When the circuit breaker is not provided with a manual operating assembly and only has an electric mechanism 3 for automatic closing, the electric mechanism 3 drives the circuit breaker to automatically open and close via the operating mechanism. When the circuit breaker also has an electric mechanism 3, the electric mechanism 3 can directly drive the circuit breaker to automatically open and close via the operating mechanism, or it can achieve automatic opening and closing by driving the manual operating assembly.

[0147] Specifically, such as Figure 23a As shown, the circuit breaker is in the open state, the first switch element 9B connects the closing circuit and disconnects the opening circuit. When the circuit breaker is automatically closed, the closing voltage signal outside or inside the circuit breaker (the power terminal E0 is connected to the positive pole and the power terminal E1 is connected to the negative pole) is loaded on 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 diode D3, the motor 301, the diode D2, and the power terminal E1 in sequence). The motor 301 rotates forward and drives the driving gear 305 to rotate from the first initial position to the middle 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, causing the first switch element 9B to disconnect the closing circuit and connect the opening circuit (as shown in FIG. 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), so the motor 301 stops rotating; Figure 23b As shown, the circuit breaker is in the closed state, the first switch element 9B connects the opening circuit and disconnects the closing circuit at the same time. When the circuit breaker is automatically opened, the opening voltage signal outside or inside the circuit breaker (the power terminal E0 is connected to the negative pole and the power terminal E1 is connected to the positive pole) is loaded on the first switch element 9B and the opening circuit (the current flows through the power terminal E1, the diode D4, the motor 301, the diode D1, the normally open contact b1, the common contact b0, and the power terminal E0 in sequence). The motor 301 rotates forward and drives the driving gear 305 to rotate from the middle position to the first initial position. 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, causing the first switch element 9B to disconnect the opening circuit and connect the closing circuit (as shown in FIG. Figure 23a (as shown), the opening voltage signal cannot pass through the closing circuit (due to the single-phase conduction function of diodes D2 and D3), causing motor 301 to stop rotating. Therefore, when the circuit breaker of the present invention needs to be closed or opened, it is only necessary to switch the current direction or voltage direction of the working power supply of motor 301. Controlling the power supply of motor 301 is simple and convenient, eliminating the need for chip control, and preventing the chip from being interfered with and affected by certain environments.

[0148] Further, this embodiment can be combined with the third embodiment of the present invention, and the circuit breaker also includes a manual-automatic switching device arranged in the circuit breaker housing 1, and the manual-automatic switching device includes a switching operating element 7a and a switching switch element 9A. The switching operating element 7a is arranged on the circuit breaker operation interface 1i, is located on one side of the button assembly hole, and is movably connected to the circuit breaker housing 1. The switching switch element 9A is connected in series in the closing circuit and the opening circuit. When the switching switch element 9A is disconnected, it is a manual working mode, the motor 301 cannot be powered, and cannot be automatically opened and closed. When the switching switch element 9A is closed, it is an automatic working mode, and manual opening and closing and automatic opening and closing are possible at the same time. The switching switch element 9A is a micro switch.

[0149] Preferably, Figure 21 、 25a 25b shows the sixth embodiment of the circuit breaker of the present invention, which is the second embodiment of the second type of circuit breaker.

[0150] like Figure 25a and 25bAs shown, the difference between the circuit breaker of this 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.

[0151] Specifically, such as Figure 25a As shown, the circuit breaker is in the open state, the first switch element 9B is connected to the closing circuit, and the closing voltage signal (power terminal E0 is connected to the positive pole and the power terminal E1 is connected to the negative pole) is loaded on 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 forward and drives the driving gear 305 to rotate from the first initial position to the middle 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 disconnects the closing circuit and connects the opening circuit (as shown in FIG. Figure 25b As shown), the closing voltage signal cannot pass through the opening circuit (because the power terminal E2 is not conducting, and even if it is conducting, the motor 301 will be short-circuited), so the motor 301 stops rotating; Figure 25b As shown, the circuit breaker is in the closed state, the first switch element 9B is connected to the opening circuit, and the opening voltage signal (power terminal E0 is connected to the negative pole and power terminal E2 is connected to the positive pole) is loaded on 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 forward and drives the driving gear 305 to rotate from the middle 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, causing the first switch element 9B to disconnect the opening circuit and connect the closing circuit (as shown in FIG. Figure 25a As shown), the opening voltage signal cannot pass through the closing circuit (because the power terminal E1 is not conducting, and even if the power terminal E1 is conducting, the motor 301 will be short-circuited), so the motor 301 stops rotating.

[0152] Preferably, Figure 21 、 22 24a-24d show the seventh embodiment of the circuit breaker of the present invention, which is the first embodiment of the third type of circuit breaker.

[0153] like Figure 21 、 22As shown in Figures 24a-24d, the difference between the circuit breaker of this embodiment and the fifth embodiment is that the circuit breaker of the present invention further includes a manual operating component, a closing auxiliary circuit and an opening auxiliary circuit; the switching device further includes a second switch 9C driven and coordinated with the manual operating component or the operating mechanism 5, and the output ends of the second switch 9C are respectively connected to the closing auxiliary circuit and the opening auxiliary circuit, for connecting the closing auxiliary circuit and disconnecting the opening auxiliary circuit at the same time, or disconnecting the closing auxiliary circuit and connecting the opening auxiliary circuit at the same time; the manual operating 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 ends of the motor 301; the input end of the second switch 9C is connected to the input end of the first switch 9B.

[0154] like Figure 24a As shown, 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, when the circuit breaker is automatically closed, a closing voltage signal is applied to both ends of the first switch 9B and the closing circuit. After the electric mechanism 3 drives the circuit breaker to close through the operating mechanism 5, as shown in FIG. Figure 24b As shown, the trigger gear drives the first switch 9B to disconnect the closing circuit and connect the opening circuit. When closing, the manual operating component and the operating mechanism 5 move to the closing position accordingly. At the same time, the action of the manual operating component or the operating mechanism 5 when closing drives the second switch 9C to disconnect the closing auxiliary circuit and connect the opening auxiliary circuit.

[0155] like Figure 24b As shown, 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, when the circuit breaker is automatically opened, a closing voltage signal is applied to both ends of the first switch 9B and the opening circuit. After the electric mechanism 3 drives the circuit breaker to open through the operating mechanism 5, as shown in FIG. Figure 24a As shown, the trigger gear drives the first switch 9B to disconnect the opening circuit and connect the closing circuit. When opening, the manual operating component and the operating mechanism 5 move to the opening position accordingly. At the same time, the action of the manual operating component or the operating mechanism 5 when opening drives the second switch 9C to disconnect the opening auxiliary circuit and connect the closing auxiliary circuit.

[0156] 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. The circuit breaker is driven to open by the manual operating component. The action of the manual operating component or the operating mechanism 5 when opening drives the second switch 9C to disconnect the opening auxiliary circuit and connect the closing auxiliary circuit, and enters the state as shown in FIG. Figure 24c At this time, automatic closing is performed, and a closing voltage signal is loaded at both ends of the first switch element 9B and the opening circuit. The motor 301 drives the trigger gear to rotate, and the trigger gear drives the first switch element 9B to disconnect the opening circuit and connect the closing circuit, and enter the state shown in FIG. Figure 24aIn the state shown, the electric mechanism 3 drives the circuit breaker to close through the operating mechanism 5, and 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 component or the operating mechanism 5 drives the second switch 9C to disconnect the closing auxiliary circuit and connect the opening auxiliary circuit, and enter the state shown in FIG. Figure 24b Status shown.

[0157] When the circuit breaker is in the open state, the first switch 9B connects the closing circuit and the second switch 9C connects the closing auxiliary circuit. After the circuit breaker is closed by the manual operating component, the action of the manual operating component or the operating mechanism 5 when closing drives the second switch 9C to disconnect the closing auxiliary circuit and connect the opening auxiliary circuit, and enter the state as shown in FIG. Figure 24d loading the opening voltage signal at both ends of the first switch element 9B and the closing circuit, the motor 301 drives the trigger gear to rotate, the trigger gear drives the first switch element 9B to disconnect the closing circuit and connect the opening circuit, and enter the state shown in FIG. Figure 24b In the state shown, the electric mechanism 3 drives the circuit breaker to open through the operating mechanism 5, and the trigger gear drives the first switch 9B to disconnect the opening circuit and connect the closing circuit. At the same time, the manual operating component or the operating mechanism 5 drives the second switch 9C to disconnect the opening auxiliary circuit and connect the closing auxiliary circuit, and enters the state shown in FIG. Figure 24a Status shown.

[0158] In this embodiment, the manual operating component is a button mechanism 2, and the circuit breaker is a plug-in circuit breaker. As another embodiment, the manual operating component can also be a handle, and the circuit breaker can be an ordinary small circuit breaker.

[0159] The first switch element 9B includes a common contact b3, a normally closed contact b0, and a normally open contact b1, wherein the normally closed contact b0 and the normally open contact b1 are respectively connected to the closing circuit and the opening circuit, or the normally closed contact b0 and the normally open contact b1 are respectively connected to the opening circuit and the closing circuit;

[0160] The second switch element 9C includes a common contact c3, a normally closed contact c0 and a normally open contact c1, wherein the normally closed contact c0 and the normally open contact c1 are connected to the closing auxiliary circuit and the opening auxiliary circuit respectively, or the normally closed contact c0 and the normally open contact c1 are connected to the opening auxiliary circuit and the closing auxiliary circuit respectively. Figures 24a-24d In the specific embodiment shown, the normally closed contact c0 is connected to the closing auxiliary circuit, the normally open contact c1 is connected to the opening auxiliary circuit, and the common contact c3 is connected to the common contact b3; when the common contact c3 is connected to the normally closed contact c0, the closing auxiliary circuit is connected, and when the common contact c3 is connected to the normally open contact, the opening auxiliary circuit is connected.

[0161] Preferably, Figures 24a-24dAs shown, 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.

[0162] Preferably, Figure 22 As shown, the second switch member 9C is arranged on one side of the connecting member 204 of the button mechanism 2 and is driven in conjunction with the connecting member 204. Figure 22 As shown, the second switch element 9C is a micro switch connected to the circuit board 111.

[0163] Specifically, such as Figure 24a As shown, 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, and the closing voltage signal (the power terminal E0 is connected to the positive pole and the power terminal E1 is connected to the negative pole) is loaded on the first switch 9B and the two ends of the closing circuit (the current flows into the motor 301 through the power terminal E0, the common contact b3, the normally closed contact b0, and the diode D3 connected in sequence, and the power terminal E0, the common contact c3, and the normally closed contact c0 connected in sequence, and flows out of the motor 301 through the diode D2 and the power terminal E1 connected in sequence). The motor 301 is positive. The drive gear 305 is rotated and driven to rotate from the first initial position to the middle 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 switching element 9B, so that the first switching element 9B disconnects the closing circuit and connects the opening circuit. At the same time, when the circuit breaker is closed, the transmission member 501 of the operating mechanism 5 drives the connecting member 204 to move through the second connecting rod 203, and the connecting member 204 presses the second driving rod of the second switching element 9C, so that the second switching element 9C disconnects the closing auxiliary circuit and connects the opening auxiliary circuit, and enters the state as shown in FIG. Figure 24b Status shown.

[0164] like Figure 24bAs shown, 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, and 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 on the first switch 9B and the two ends of the closing circuit (the current flows into the motor 301 through the power terminal E1 and the diode D4 connected in sequence, and flows out of the motor 301 through the diode D1, the normally open contact b1, the common contact b3, the power terminal E0, and the diode D5, the normally open contact c1, the normally closed contact c3, and the power terminal E0 connected in sequence). 01 rotates forward and drives the driving 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 driving platform 305-4 of the third driving gear 305-3 releases the first driving rod of the first switching element 9B, so that the first switching element 9B disconnects the opening circuit and connects the closing circuit; at the same time, when the circuit breaker completes the opening, the transmission member 501 of the operating mechanism 5 drives the connecting member 204 to move through the second connecting rod 203, and the connecting member 204 releases the second driving rod of the second switching element 9C, so that the second switching element 9C disconnects the opening auxiliary circuit and connects the closing auxiliary circuit, and enters the state as shown in FIG. Figure 24a Status shown.

[0165] Reference Figure 24b When the circuit breaker is in the closed state, the first switch 9B connects the opening circuit and the second switch 9C connects the opening auxiliary circuit. After the circuit breaker is opened by the manual operation component, the second switch 9C disconnects the opening auxiliary circuit and connects the closing auxiliary circuit, and enters the state as shown in FIG. Figure 24c In the state shown, the closing voltage signal (power terminal E0 is connected to the positive pole and power terminal E1 is connected to the negative pole) is loaded on the first switch element 9B and the two ends of the closing circuit (the current flows into the motor 301 through the power terminal E0, common contact c3, normally closed contact c0, and diode D6 connected in sequence, and flows out of the motor 301 through the diode D2 and power terminal E1 connected in sequence). The motor 301 rotates forward and drives the driving gear 305 to rotate from the middle position to the first initial position. At the same time, the switch driving platform 305-4 of the third driving gear 305-3 releases the first driving rod of the first switching element 9B, so that the first switching element 9B disconnects the opening circuit and connects the closing circuit, entering the state shown in FIG. Figure 24a The motor 301 continues to rotate forward, driving the gear member 305 to rotate from the first initial position to the intermediate position. After the circuit breaker is closed, the third driving gear 305 of the driving gear member 305 drives the first switch member 9B to disconnect the closing circuit and connect the opening circuit. At the same time, when the circuit breaker is closed, the transmission member 501 of the operating mechanism 5 drives the connecting member 204 to operate through the second connecting rod 203, and the connecting member 204 drives the second switch member 9C to disconnect the closing auxiliary circuit and connect the opening auxiliary circuit, entering the state shown in FIG. Figure 24b Status shown.

[0166] Reference Figure 24a 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 closing auxiliary circuit. After the circuit breaker is closed by the manual operation component, the second switch element 9C disconnects the closing auxiliary circuit and connects the opening auxiliary circuit, entering the state shown in Figure 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 on the first switch element 9B and the closing circuit (the current flows into the motor 301 through the power terminal E1 and the diode D4 connected in sequence, and flows out of the motor 301 through the diode D5, the normally open contact c1, the common contact c3, and the power terminal E1 connected in sequence). The motor 301 rotates forward and drives the driving gear element 305 to rotate from the first initial position to the middle position. 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 disconnects the closing circuit and connects the opening circuit, entering the state shown in Figure 24. Figure 24b The motor 301 continues to rotate forward, driving the gear member 305 to rotate from the middle position to the first initial position. After the circuit breaker is opened, the third driving gear 305 of the driving gear member 305 drives the first switch member 9B to disconnect the opening circuit and connect the closing circuit. At the same time, when the circuit breaker is opened, the transmission member 501 of the operating mechanism 5 drives the connecting member 204 to operate through the second connecting rod 203, and the connecting member 204 drives the second switch member 9C to disconnect the opening auxiliary circuit and connect the closing auxiliary circuit, entering the state shown in FIG. Figure 24a Status shown.

[0167] Preferably, Figure 21 、 22 26a-26d show the eighth embodiment of the circuit breaker of the present invention, which is the second embodiment of the third type of circuit breaker.

[0168] like Figures 26a-26d As shown, the difference between the circuit breaker of this 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;

[0169] 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.

[0170] The working principle of this embodiment is the same as that of the circuit breaker of the seventh embodiment. However, due to the changes in the structures of the closing circuit and the opening circuit, the loading positions of the closing voltage signal and the opening voltage signal and the current path are changed. These can be deduced by those skilled in the art. Therefore, the working principle of the circuit breaker of this embodiment will not be described in detail here.

[0171] The above is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention should not be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. A circuit breaker comprising a circuit breaker housing (1), and a motor mechanism (3), an operating mechanism (5), a moving contact (1a) connected to the operating mechanism (5), and a stationary contact (1b) used in conjunction with the moving contact (1a), which are respectively arranged in the circuit breaker housing (1); characterized in that: The electric mechanism (3) comprises a driving gear member (305) and a driven gear (306) respectively pivotally arranged on the circuit breaker housing (1); the operating mechanism (5) comprises a transmission member (501) pivotally arranged on the circuit breaker housing (1); the driven gear (306) and the transmission member (501) are coaxially arranged and drive-matched; The driving gear member (305) is driven and matched with the driven gear (306), and the driven gear (306) drives the transmission member (501) to rotate so as to close the circuit breaker. An energy storage spring (3-5) is provided between the driven gear (306) and the transmission member (501); when the circuit breaker is closed, the driven gear (306) drives the transmission member (501) to rotate in a second direction via the energy storage spring (3-5); after the circuit breaker is closed, the driving gear member (305) 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.

2. The circuit breaker according to claim 1, wherein: The energy storage spring (3-5) is a torsion spring, comprising 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); the first spring arm (3-51) is position-limitedly matched with the transmission member (501); and the second spring arm (3-52) is position-limitedly matched with the driven gear (306).

3. The circuit breaker according to claim 1, wherein: 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 portion (306-1) arranged on one side of the driven gear body (306-2); the driven gear body (306-2) and the transmission member (501) are coaxially pivoted and arranged on the circuit breaker housing (1); the first sector gear portion (306-1) is arranged in the driven gear limiting groove (501-306); and the spring body (3-50) of the energy storage spring (3-5) is located between the driven gear body (306-2) and the transmission member (501).

4. The circuit breaker according to claim 3, wherein: The first sector gear portion (306-1) includes a first sector gear portion head end face (306-10) and a first sector gear portion tail end face (306-11) respectively arranged at two ends thereof; the transmission member (501) further includes a driven gear limiting groove head end face (501-6) and a driven gear limiting groove tail end face (501-4) arranged at two ends of the driven gear limiting groove (501-306); the first sector gear portion head end face (306-10) and the driven gear limiting groove head end face (501-6) abut against each other; and a first movement gap is provided between the first sector gear portion tail end face (306-11) and the driven gear limiting groove tail end face (501-4).

5. The circuit breaker according to claim 4, characterized in that: The driven gear (306) further comprises a driven gear spring limiting hole (306-3) arranged on the driven gear body (306-2); the transmission member (501) further comprises a transmission member spring limiting groove (501-5) arranged at one end of the driven gear limiting groove (501-306); the transmission member spring limiting groove (501-5) and the driven gear limiting groove tail end surface (501-4) are located at the same end of the transmission gear limiting groove (501-306); the first spring arm (3-51) of the energy storage spring (3-5) is limitedly matched with the transmission member spring limiting groove (501-5), and the second spring arm (3-52) is limitedly matched with the driven gear spring limiting hole (306-3).

6. The circuit breaker according to claim 3, wherein: The transmission member (501) further comprises a transmission member body (501-0) and a transmission member spring assembly groove (501-7) arranged on one side of the transmission member body (501-0); a driven gear limiting groove (501-306) is arranged on one side of the transmission member spring assembly groove (501-7); the driven gear body (306-2) and the first sector gear portion (306-1) are arranged in staggered layers, and the first sector gear portion (306-1) is offset relative to the driven gear body (306-2) toward the side where the transmission member (501) is located; the spring body (3-50) is arranged in the transmission member spring assembly groove (501-7) and is limited between the driven gear body (306-2) and the transmission member body (501-0).

7. The circuit breaker according to claim 1, wherein: The circuit breaker further comprises a button mechanism (2) arranged in the circuit breaker housing (1), the button mechanism (2) comprising a button member (201) slidably arranged on the circuit breaker housing (1), the button mechanism (2) being drivingly connected to a transmission member (501); pressing / pulling the button member (201) drives the operating mechanism (5) to operate, thereby closing / opening the circuit breaker.

8. The circuit breaker according to claim 7, wherein: The button mechanism (2) further comprises a connecting piece (204) slidably arranged on the circuit breaker housing (1), a first connecting rod (202) whose two ends are respectively connected to the button piece (201) and the connecting piece (204), and a second connecting rod (203) whose two ends are respectively connected to the connecting piece (204) and the transmission piece (501); the driving gear piece (305) is drivingly engaged with the connecting piece (204).

9. The circuit breaker according to claim 1, wherein: The operating mechanism (5) further comprises a rotating plate (505) pivotally mounted on the circuit breaker housing (1), a tripping catch (503) and a locking catch (504) pivotally mounted on the rotating plate (505) and engaging with each other, a third connecting rod (502) with two ends respectively connected to the transmission member (501) and the tripping catch (503), and a second return spring (506) for driving the rotating plate (505); one end of the moving contact (1a) is connected to the rotating plate (505).

10. The circuit breaker according to claim 7, wherein: The transmission member (501) is a cylindrical structure, comprising a transmission member main body (501-0), a transmission member spring assembly groove (501-7) and a driven gear limiting groove (501-306) arranged on one side of the transmission member main 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) respectively arranged on the transmission member main body (501-0); the transmission member spring assembly groove (501-7) and the driven gear limiting groove (501-306) are located on the same side of the transmission member main body (501-0), and the driven gear limiting groove (501-306) is located on the same side of the transmission member main body (501-0). ) is arranged on one side of the transmission member spring assembly groove (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 the three vertices of a triangle, the first transmission member connecting hole (501-1) is arranged close to the driven gear limiting groove (501-306), the transmission member (501) is pivoted through the transmission member shaft hole (501-3), the first transmission member connecting hole (501-1) is connected to the second connecting rod (203) of the button mechanism (2), and the second transmission member connecting hole (501-2) is connected to the third connecting rod (502) of the operating mechanism (5).

11. The circuit breaker according to claim 3, wherein: The driven gear (306) includes a driven gear body (306-2), a first sector gear portion (306-1), and a driven gear shaft hole (306-4) and a driven gear spring limiting hole (306-3) respectively arranged on the driven gear body (306-2); the driven gear body (306-2) includes a body base plate (306-20), a body limiting platform (306-21) and a body spring limiting platform (306-22) which are coaxially arranged in sequence and have decreasing diameters in sequence, and the body base plate (306-20) is connected to the transmission gear body. The transmission member main body (501-0) of the moving member (501) is abutted against one side thereof, the main body limiting platform (306-21) is inserted into the transmission member spring assembly groove (501-7) of the transmission member (501), and the main body spring limiting platform (306-22) is inserted into the middle of the spring main body (3-50) of the energy storage spring (3-5); one end of the first sector gear portion (306-1) is respectively connected to a side of the main body substrate (306-20) connected to the main body limiting platform (306-21) and an outer peripheral edge of the main body limiting platform (306-21).

12. The circuit breaker according to claim 1, wherein: The transmission member (501) further comprises a travel limit slot (501-8), and the circuit breaker housing (1) further comprises an in-position stop (102) arranged on one side of the transmission member (501); when the circuit breaker is in an open state, a side wall at one end of the travel limit slot (501-8) is in a limited position with the in-position stop (102), and when the circuit breaker is in a closed state, a side wall at the other end of the travel limit slot (501-8) is in a limited position with the in-position stop (102).

13. The circuit breaker according to claim 1, wherein: The driving gear member (305) rotates from a first initial position in a 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 a second direction, the driven gear (306) drives the transmission member (501) to rotate in the second direction via the energy storage spring (3-5), and 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 an intermediate position and disengages from the driven gear (306).

Images