A circuit breaker

Abstract

The utility model relates to a circuit breaker relates to electrical switch technical field. The circuit breaker is used for plugging in 1U frame, it includes the casing and the circuit breaker body and the electric operating mechanism that are arranged in parallel in the casing, the circuit breaker body includes manual operating mechanism, moving contact and static contact, the electric operating mechanism, manual operating mechanism and moving contact are connected gradually, and the electric operating mechanism is driven through manual operating mechanism and drives moving contact and static contact to close or open. The circuit breaker can be closed and opened through the electric operating mechanism, has the advantage that can be remote control, thereby improves the flexibility and convenience of circuit breaker when actual use.

Description

Technical Field

[0001] This invention relates to the field of electrical switch technology, and more specifically, to a circuit breaker. Background Technology

[0002] With the rapid development of society, economy, and urban construction, people's living standards and housing conditions have significantly improved, leading to a more comprehensive understanding of electrical safety. To enhance electrical safety, circuit breakers are typically installed in electrical circuits. A circuit breaker is a switching device capable of closing, carrying, and interrupting current under normal circuit conditions and, within a specified time, closing, carrying, and interrupting current under abnormal circuit conditions. When faults such as leakage, overload, or short circuit occur in the system, the circuit breaker can quickly disconnect the faulty circuit or cut off the entire power supply to prevent the fault from escalating and avoid significant economic losses and personal injury.

[0003] Existing circuit breakers mainly include operating buttons, manual operating mechanisms, contact mechanisms, input terminals, and output terminals. Manually driving the operating buttons via the manual operating mechanism actuates the contact mechanism to close or open the circuit, thus switching the load between on and off states. However, this method of manually operating buttons to close and open the circuit breaker has the disadvantage of not being able to achieve remote control, making its use inconvenient. Summary of the Invention

[0004] The purpose of this invention is to provide a circuit breaker that can be operated by an electric operating mechanism for closing and opening, and has the advantage of remote control, thereby improving the flexibility and convenience of the circuit breaker in actual use.

[0005] The embodiments of the present invention are implemented as follows:

[0006] This invention provides a circuit breaker for insertion into a 1U frame. It includes a housing, a circuit breaker body, and an electrically operated mechanism arranged parallel to each other within the housing. The circuit breaker body includes a manual operating mechanism, a moving contact, and a stationary contact. The electrically operated mechanism, the manual operating mechanism, and the moving contact are connected sequentially. The electrically operated mechanism, driven by the manual operating mechanism, causes the moving contact to close or open with the stationary contact. This circuit breaker can be operated via the electrically operated mechanism for closing and opening, and has the advantage of remote control, thereby improving the flexibility and convenience of the circuit breaker in practical use.

[0007] Optionally, the electric operating mechanism includes a circuit board, a motor, a sector tooth, and a drive shaft. The circuit board is electrically connected to the motor, and the motor, the sector tooth, and the drive shaft are sequentially connected in a transmission manner. The sector tooth is rotatably disposed within the housing, and the drive shaft is connected in a transmission manner to the inner handle of the manual operating mechanism. The circuit board is used to control the motor to abut or disengage through the sector tooth and the drive shaft, so that the manual operating mechanism drives the moving contact to contact or separate from the stationary contact.

[0008] Optionally, the sector tooth is sleeved on the drive shaft, and a first protrusion is provided on the side of the sector tooth facing the drive shaft, and a second protrusion is provided on the outer edge of the drive shaft. The first protrusion is used to abut against the second protrusion so that the sector tooth drives the drive shaft to rotate.

[0009] Optionally, the circuit board is provided with a first Hall sensor located in the closed position, the circuit board is electrically connected to the first Hall sensor, and a first magnetic block is provided on the drive shaft; when the first magnetic block rotates to the closed position, the circuit board is used to control the motor to work according to the trigger signal of the first magnetic block obtained by the first Hall sensor.

[0010] Optionally, the electric operating mechanism further includes a release lever rotatably disposed within the housing, and a third protrusion is provided on the side of the sector teeth facing the drive shaft. The third protrusion is used to abut against the release lever, so that the sector teeth drive the release lever to rotate and abut against the locking element of the manual operating mechanism.

[0011] Optionally, the circuit board is provided with a second Hall sensor for the open position, and the circuit board is electrically connected to the second Hall sensor; when the first magnetic block rotates to the open position, the circuit board is used to control the motor to work according to the trigger signal of the first magnetic block obtained by the second Hall sensor.

[0012] Optionally, the circuit board is further provided with a third Hall sensor located at the reset point, the circuit board is electrically connected to the third Hall sensor, and a second magnetic block is provided on the sector teeth; when the second magnetic block rotates to the reset point, the circuit board is also used to control the motor to shut down according to the trigger signal of the second magnetic block obtained by the third Hall sensor.

[0013] Optionally, the release lever includes a connecting portion and a supporting portion and an elastic portion respectively disposed on both sides of the connecting portion. The release lever is rotatably connected to the housing through the connecting portion. The opposite sides of the supporting portion are respectively used to abut against the sector tooth and the locking member. The end of the elastic portion away from the supporting portion abuts against the housing and is used to provide a restoring force for the rotation of the supporting portion relative to the housing.

[0014] Optionally, the electric operating mechanism further includes an unlocking button slidably disposed within the housing and a push rod connected at one end to the unlocking button. A fourth protrusion is also provided on the side of the sector tooth facing the transmission shaft. The other end of the push rod is used to abut against the fourth protrusion to push the sector tooth to rotate until the second magnetic block reaches the reset point.

[0015] Optionally, the electric operating mechanism further includes an elastic element, the two ends of which abut against the unlock button and the housing respectively, for providing a restoring force to the movement of the unlock button relative to the housing.

[0016] The beneficial effects of the embodiments of the present invention include:

[0017] The circuit breaker includes a housing, a circuit breaker body, and an electrically operated mechanism arranged parallel to each other within the housing. The circuit breaker body includes a manual operating mechanism, a moving contact, and a stationary contact. The electrically operated mechanism, the manual operating mechanism, and the moving contact are connected in sequence. The electrically operated mechanism, driven by the manual operating mechanism, actuates the moving contact to close or open the circuit with the stationary contact. This circuit breaker can be operated for closing and opening not only through the manual operating mechanism but also through the electrically operated mechanism. Therefore, it has the advantage of remote control, thereby improving the flexibility and convenience of the circuit breaker in practical use. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 An exploded view of a circuit breaker provided in an embodiment of the present invention;

[0020] Figure 2 This is one of the structural schematic diagrams of a circuit breaker in the closed state provided in an embodiment of the present invention;

[0021] Figure 3 This is the second schematic diagram of the circuit breaker in the closed state provided in an embodiment of the present invention;

[0022] Figure 4 This is one of the structural schematic diagrams of a circuit breaker in the open state provided in an embodiment of the present invention;

[0023] Figure 5 This is the second schematic diagram of the circuit breaker in the open state provided in an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of the sector teeth provided in an embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the structure of the drive shaft provided in an embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the release lever provided in an embodiment of the present invention.

[0027] Icons: 100-Circuit breaker; 110-Housing; 120-Circuit breaker body; 121-Manual operating mechanism; 1211-Inner handle; 1212-Lock element; 122-Moving contact; 123-Stationary contact; 130-Electrically operated mechanism; 131-Circuit board; 1311-First Hall sensor; 1312-Second Hall sensor; 1313-Third Hall sensor; 132-Motor; 133-Sector tooth; 1331-Second magnet; 1332-First protrusion; 1333-Third protrusion; 1334-Fourth protrusion; 134-Drive shaft; 1341-First magnet; 1342-Second protrusion; 135-Trigger lever; 1351-Connecting part; 1352-Supporting part; 13521-First supporting protrusion; 13522- Second abutment protrusion; 1353 - elastic part; 136 - unlock button; 137 - push rod; 138 - elastic element; 139 - gear set. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0033] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] Please refer to the reference. Figures 1 to 8 This application provides a circuit breaker 100 for insertion into a 1U frame. It includes a housing 110, a circuit breaker body 120, and an electric operating mechanism 130 arranged parallel to each other within the housing 110. The circuit breaker body 120 includes a manual operating mechanism 121, a moving contact 122, and a stationary contact 123. The electric operating mechanism 130, the manual operating mechanism 121, and the moving contact 122 are connected sequentially. The electric operating mechanism 130, driven by the manual operating mechanism 121, moves the moving contact 122 to close or open the circuit with the stationary contact 123. This circuit breaker 100 can be operated for closing and opening not only through the manual operating mechanism 121 but also through the electric operating mechanism 130. Therefore, it has the advantage of remote control, thereby improving the flexibility and convenience of the circuit breaker 100 in actual use.

[0035] It should be noted that the circuit breaker 100 includes a housing 110 and a circuit breaker body 120 and an electric operating mechanism 130 respectively disposed within the housing 110, and the circuit breaker body 120 and the electric operating mechanism 130 are arranged in parallel (or side-by-side). The circuit breaker 100 can be operated for closing and opening not only by the manual operating mechanism 121 but also by the electric operating mechanism 130, thus having the advantage of remote control, thereby improving the flexibility and convenience of the circuit breaker 100 in actual use. Regarding the specific structure of the housing 110 and the relative positional relationship between the circuit breaker body 120 and the electric operating mechanism 130, those skilled in the art should be able to make reasonable selections and designs according to actual conditions, and no specific limitations are made here.

[0036] For example, such as Figure 1 As shown, in this embodiment, the housing 110 may include two semi-enclosed sub-housings arranged opposite each other. The two sub-housings together enclose a space for accommodating the circuit breaker body 120 and the electric operating mechanism 130, thereby improving the consistency and aesthetics of the appearance of the circuit breaker 100. Furthermore, a partition may be provided between the two sub-housings to separate the accommodating space, preventing the circuit breaker body 120 and the electric operating mechanism 130 from interfering with each other. For example, the cross-sectional shape of both sub-housings and the partition is rectangular, with their length, width, and height directions corresponding and parallel to each other. The portion of the accommodating space located on one side of the partition is called the left chamber, and the portion of the accommodating space located on the other side of the partition is called the right chamber. The circuit breaker body 120 may be accommodated in the left chamber and the electric operating mechanism 130 in the right chamber, or vice versa. It is worth noting that when arranging the space of the circuit breaker 100, the power supply, motor 132, shunt, etc. of the electric operating mechanism 130 can appropriately utilize the internal space of the circuit breaker body 120, as long as the electric operating mechanism 130 can operate normally, thereby satisfying the design concept of miniaturization of the circuit breaker 100 as much as possible. For example, the shunt can be set on one side of the exhaust duct of the circuit breaker body 120 to avoid affecting the normal operation of the circuit breaker body 120. At the same time, it can be placed as close as possible to the input terminals and overload protection mechanism of the circuit breaker body 120, so that one end of the shunt can be soldered to the input terminal through a flexible wire and the other end can be soldered to the overload protection mechanism. In addition, the signal output terminal of the shunt is electrically connected to the circuit board 131 for current detection through the shunt.

[0037] Of course, in other embodiments, the housing 110 may also include two parallel, enclosed sub-housings. One sub-housing is used to accommodate the circuit breaker body 120, and the other sub-housing is used to accommodate the electric operating mechanism 130. The two adjacent sidewalls of the two sub-housings are fitted and fixed together to form a whole, thereby improving the ease of manufacturing the circuit breaker 100. For example, both the sub-housing for accommodating the circuit breaker body 120 and the sub-housing for accommodating the electric operating mechanism 130 are rectangular in structure, and their length, width, and height directions are corresponding and parallel to each other. The two sidewalls formed by the length and width directions of the sub-housing for accommodating the circuit breaker body 120 are divided into a first sidewall and a second sidewall. The sub-housing for accommodating the electric operating mechanism 130 may be located on the side of the first sidewall away from the second sidewall and fitted and fixedly connected to the first sidewall, or it may be located on the side of the second sidewall away from the first sidewall and fitted and fixedly connected to the second sidewall.

[0038] The circuit breaker body 120 includes a manual operating mechanism 121, a moving contact 122, and a stationary contact 123. The manual operating mechanism 121 may include an operating button, an inner handle 1211, a bracket, a locking element 1212, and a tripping element. The bracket is rotatably disposed within the housing 110. The locking element 1212, the tripping element, and the moving contact 122 are rotatably disposed on the bracket. The operating button, the inner handle 1211, and the tripping element are connected by transmission. The locking element 1212 is used to engage with the tripping element. The moving contact 122 and the bracket can abut against each other. The operating button is driven to move the inner handle 1211, so that the bracket, the locking element 1212, and the tripping element work together to drive the moving contact 122 to close or open with the stationary contact 123. In addition, the circuit breaker body 120 may also include input terminals, output terminals, an arc-extinguishing mechanism, a short-circuit protection mechanism, and an overload protection mechanism. The input and output terminals may be plug-in terminals, allowing the input terminals to be plugged into the input terminal block in the distribution box and the output terminals to be plugged into the output terminal block in the distribution box, thereby connecting the circuit breaker 100 to a load-bearing electrical circuit. The arc-extinguishing mechanism may include an arc-initiating plate and an arc-extinguishing chamber, so that the arc generated between the moving contact 122 and the stationary contact 123 during short-circuit tripping is introduced into the arc-extinguishing chamber for arc extinguishing, thereby improving the arc-extinguishing capability of the circuit breaker 100. The short-circuit protection mechanism may be an electromagnetic trip unit, enabling the circuit breaker 100 to trip when a short-circuit fault occurs. The overload protection mechanism may be a thermal trip unit (e.g., a bimetallic strip), enabling the circuit breaker 100 to trip when an overload fault occurs, thereby disconnecting the load-bearing electrical circuit containing the circuit breaker 100 and ensuring the safety of the load in the electrical circuit.

[0039] like Figure 1As shown, in this embodiment, the electric operating mechanism 130 includes a circuit board 131, a motor 132, a sector gear 133, and a drive shaft 134. The circuit board 131 is electrically connected to the motor 132. The motor 132, sector gear 133, and drive shaft 134 are sequentially connected for transmission. The sector gear 133 is rotatably disposed within the housing 110. The drive shaft 134 is connected for transmission to the inner handle 1211 of the manual operating mechanism 121 (a clearance hole needs to be correspondingly provided on the partition or sub-housing). The circuit board 131 is used to control the motor 132 to abut or disengage through the sector gear 133 and the drive shaft 134, so that the manual operating mechanism 121 drives the moving contact 122 to contact or separate from the stationary contact 123. Optionally, the electric operating mechanism 130 also includes a gear set 139, through which the motor 132 is connected to the sector gear 133. For example, the gear set 139 includes multiple transmission gears connected in sequence to transmit motion between the motor 132 and the sector gear 133. For instance, the number of transmission gears can be four, ensuring reliable transmission while avoiding excessive space requirements.

[0040] like Figure 6 and Figure 7 As shown, in this embodiment, the sector tooth 133 is sleeved on the transmission shaft 134. A first protrusion 1332 is provided on the side of the sector tooth 133 facing the transmission shaft 134, and a second protrusion 1342 is provided on the outer edge of the transmission shaft 134. The first protrusion 1332 abuts against the second protrusion 1342, causing the sector tooth 133 to drive the transmission shaft 134 to rotate. This causes the inner handle 1211 of the manual operating mechanism 121 to drive the moving contact 122 to contact the stationary contact 123, thus closing the circuit breaker 100. The proportion of teeth in the sector tooth 133 should be determined based on the rotational stroke of the sector tooth 133, ensuring that the motor 132 (or the last transmission gear of the gear set 139) remains engaged with the sector tooth 133 at all times. For example, the drive shaft 134 includes a cylindrical shaft portion and a polygonal shaft portion (e.g., a square shaft portion) that are coaxially arranged and interconnected, so that the sector teeth 133 can be fitted onto the cylindrical shaft portion of the drive shaft 134. Simultaneously, the polygonal shaft portion (e.g., the square shaft portion) of the drive shaft 134 can also be connected to the inner handle 1211, thereby enabling the sector teeth 133 to drive the inner handle 1211 to rotate synchronously via the drive shaft 134. Furthermore, the number of the first protrusion 1332 and the second protrusion 1342 can each include two oppositely arranged protrusions, thereby improving the reliability and stability of the synchronous movement of the drive shaft 134 driven by the sector teeth 133 when the first protrusion 1332 and the second protrusion 1342 abut against each other.

[0041] like Figure 2 and Figure 3As shown, in this embodiment, a first Hall sensor 1311 located in the closed position is provided on the circuit board 131, and the circuit board 131 is electrically connected to the first Hall sensor 1311. A first magnetic block 1341 is provided on the transmission shaft 134. When the first magnetic block 1341 rotates to the closed position, the circuit board 131 is used to control the motor 132 to work according to the trigger signal of the first magnetic block 1341 obtained by the first Hall sensor 1311.

[0042] Specifically, when the circuit breaker 100 performs a closing operation, the motor 132 drives the sector tooth 133 to rotate counterclockwise. Since the first protrusion 1332 and the second protrusion 1342 abut against each other, the sector tooth 133 can drive the transmission shaft 134 to rotate synchronously counterclockwise. Since the transmission shaft 134 is connected to the inner handle 1211 through a polygonal shaft portion (e.g., a square shaft portion), the sector tooth 133 can drive the inner handle 1211 of the manual operating mechanism 121 to rotate synchronously through the transmission shaft 134. Since the bracket, locking element 1212, jumper element, and moving contact 122 of the manual operating mechanism 121 form a whole, the moving contact 122 can contact the stationary contact 123 under the drive of the inner handle 1211 to achieve closing. During the above process, the first magnetic block 1341 can gradually move from the open position to the closed position. When the first magnetic block 1341 reaches the closed position, the first Hall sensor 1311 senses and detects the magnetic field of the first magnetic block 1341, and the circuit board 131 sends a command to the motor 132 to stop rotating.

[0043] like Figure 1 and Figure 8 As shown, in this embodiment, the electric operating mechanism 130 further includes a tripping rod 135 rotatably disposed within the housing 110. A third protrusion 1333 is provided on the side of the sector teeth 133 facing the drive shaft 134. The third protrusion 1333 is used to abut against the tripping rod 135, so that the sector teeth 133 drive the tripping rod 135 to rotate and (through the tripping rod 135) abut against the locking member 1212 of the manual operating mechanism 121. Since the circuit breaker body 120 and the electric operating mechanism 130 are arranged parallel to each other, in order to enable the tripping rod 135 to rotate and abut against the locking member 1212 of the manual operating mechanism 121, the rotation axis of the locking member 1212 relative to the bracket can be extended to allow contact with the tripping rod 135 (a clearance hole needs to be correspondingly provided on the partition or sub-housing, and the clearance hole should be provided along the movement path of the rotation axis of the locking member 1212).

[0044] It is worth noting that the relative movement between the first protrusion 1332 and the second protrusion 1342, and the relative movement between the third protrusion 1333 and the trip lever 135, must not interfere with each other to avoid one of the closing or opening operations failing to perform normally. Those skilled in the art should be able to spatially arrange the first protrusion 1332, the second protrusion 1342, the third protrusion 1333, and the trip lever 135 according to the above requirements; no specific restrictions are imposed here. For example, the first protrusion 1332 and the second protrusion 1342 can be arranged on a circumference with a first distance from the rotation center of the sector tooth 133, and the third protrusion 1333 and the trip lever 135 can be arranged on a circumferential trajectory with a second distance from the rotation center of the sector tooth 133, wherein the second distance is greater than the first distance.

[0045] like Figure 4 and Figure 5 As shown, in this embodiment, a second Hall sensor 1312 for the open position is provided on the circuit board 131, and the circuit board 131 is electrically connected to the second Hall sensor 1312; when the first magnetic block 1341 rotates to the open position, the circuit board 131 is used to control the motor 132 to work according to the trigger signal of the first magnetic block 1341 obtained by the second Hall sensor 1312.

[0046] Specifically, when the circuit breaker 100 performs a tripping operation, the motor 132 drives the sector tooth 133 to rotate clockwise. Since the first protrusion 1332 and the second protrusion 1342 will disengage, the transmission shaft 134 remains in the closed position under the action of the manual operating mechanism 121. Only the sector tooth 133 rotates clockwise under the action of the motor 132. As the sector tooth 133 continues to rotate, the third protrusion 1333 can abut against the locking member 1212 of the manual operating mechanism 121 through the tripping rod 135, pushing the locking member 1212 to rotate relative to the bracket. This causes the bracket, locking member 1212, tripping member, and moving contact 122 of the manual operating mechanism 121 to disintegrate quickly. Therefore, the moving contact 122 can separate from the stationary contact 123 under the action of the reset spring connected to it, thereby achieving tripping. During the above process, since the drive shaft 134 is connected to the inner handle 1211 through a polygonal shaft portion (e.g., a square shaft portion), the drive shaft 134 can rotate rapidly under the drive of the inner handle 1211. That is, the first magnetic block 1341 can rotate rapidly (from the closed position) to the open position. When the first magnetic block 1341 reaches the open position, the second Hall sensor 1312 senses and detects the magnetic field of the first magnetic block 1341, and the circuit board 131 sends a command to the motor 132 to stop rotating.

[0047] To avoid interference between the closing and opening of the electric operating mechanism 130 and the closing and opening of the manual operating mechanism 121, such as... Figures 2 to 5As shown, in this embodiment, a third Hall sensor 1313 located at the reset point is also provided on the circuit board 131. The circuit board 131 is electrically connected to the third Hall sensor 1313. A second magnetic block 1331 is provided on the sector tooth 133. When the second magnetic block 1331 rotates to the reset point, the circuit board 131 is also used to control the motor 132 to turn off according to the trigger signal of the second magnetic block 1331 obtained by the third Hall sensor 1313.

[0048] Specifically, after the circuit breaker is closed (with a preset first time interval), the motor 132 first drives the sector tooth 133 to rotate clockwise. Since the first protrusion 1332 and the second protrusion 1342 will disengage, the transmission shaft 134 remains in the closed position under the action of the manual operating mechanism 121. Only the sector tooth 133 rotates clockwise under the action of the motor 132. As the sector tooth 133 continues to rotate, the second magnetic block 1331 moves to the reset point. At this time, the third Hall sensor 1313 senses and detects the magnetic field of the second magnetic block 1331, and the circuit board 131 sends a command to the motor 132 to stop rotating. In this way, there is a certain travel between the first protrusion 1332 and the second protrusion 1342, and the circuit breaker 100 can be opened by the manual operating mechanism 121 without affecting the opening operation of the manual operating mechanism 121 because the first protrusion 1332 and the second protrusion 1342 are still in a resisting state.

[0049] Similarly, after the tripping is achieved (a second time interval can be preset, which may be equal to or different from the first time interval; those skilled in the art can make reasonable selections and designs according to actual conditions, without specific limitations here), the motor 132 drives the sector tooth 133 to rotate counterclockwise, and the third protrusion 1333 rotates synchronously counterclockwise, so that the trip lever 135 can move towards the side away from the locking member 1212. As the sector tooth 133 continues to rotate, the second magnetic block 1331 moves to the reset point. At this time, the third Hall sensor 1313 senses and detects the magnetic field of the second magnetic block 1331, and the circuit board 131 sends a command to the motor 132 to stop rotating. In this way, there is a certain stroke between the trip lever 135 and the locking member 1212, and the circuit breaker 100 can be closed by the manual operating mechanism 121 without affecting the closing operation of the manual operating mechanism 121 because the trip lever 135 and the locking member 1212 are still in a resisting state.

[0050] like Figure 8As shown, in this embodiment, the trip lever 135 includes a connecting portion 1351 and a supporting portion 1352 and an elastic portion 1353 respectively disposed on both sides of the connecting portion 1351. The trip lever 135 is rotatably connected to the housing 110 through the connecting portion 1351. For example, the housing 110 is provided with a mounting shaft, and the connecting portion 1351 is provided with a mounting hole, so that the mounting shaft can be correspondingly assembled into the mounting hole, so that the trip lever 135 can be rotatably connected to the housing 110 through the connecting portion 1351. The opposite sides of the abutment portion 1352 are respectively used to abut against the third protrusion 1333 of the sector tooth 133 and the locking member 1212. For example, the opposite sides of the abutment portion 1352 are respectively provided with a first abutment protrusion 13521 for abutting against the sector tooth 133 and a second abutment protrusion 13522 for abutting against the locking member 1212, and there is a certain distance between the first abutment protrusion 13521 and the second abutment protrusion 13522, so that the sector tooth 133 only needs to rotate a small stroke to abut against the first abutment protrusion 13521, and then continue to rotate a small stroke to abut against the locking member 1212 through the second abutment protrusion 13522. The end of the elastic part 1353 away from the supporting part 1352 abuts against the housing 110, providing a restoring force to the rotation of the supporting part 1352 relative to the housing 110, so that the tripping rod 135 can return to its initial state under the action of the elastic part 1353, thereby enabling the circuit breaker 100 to perform the next closing and opening operation normally. It should be understood that the shape of the elastic part 1353 in the drawings is only for illustrative purposes and is not intended to specifically limit the actual shape of the elastic part 1353.

[0051] like Figure 1 , Figure 3 , Figure 5 and Figure 6As shown, in this embodiment, the electric operating mechanism 130 further includes an unlocking button 136 slidably disposed within the housing 110 and a push rod 137 connected at one end to the unlocking button 136. A fourth protrusion 1334 is also provided on the side of the sector tooth 133 facing the transmission shaft 134. The other end of the push rod 137 is used to abut against the fourth protrusion 1334 to push the sector tooth 133 to rotate until the second magnetic block 1331 reaches the reset point. When the circuit breaker fails to close multiple times, it can be mechanically locked in the open position. After manual inspection for abnormalities, it can be unlocked by manually pressing the unlocking button 136. At this time, the unlocking button 136 can abut against the fourth protrusion 1334 of the sector tooth 133 through the push rod 137, causing the sector tooth 133 to rotate counterclockwise until the second magnetic block 1331 moves to the reset point. Only then can normal manual and electric closing operations continue. In order to guide the movement of the push rod 137, a guide block or guide groove may also be provided on the housing 110 so that the press unlock button 136 can abut against the fourth protrusion 1334 of the sector tooth 133 through the push rod 137.

[0052] like Figures 1 to 5 As shown, in this embodiment, the electric operating mechanism 130 also includes an elastic element 138. The two ends of the elastic element 138 abut against the unlock button 136 and the housing 110 respectively, and are used to provide a restoring force for the movement of the unlock button 136 relative to the housing 110, so that the unlock button 136 can drive the push rod 137 to move relative to the housing 110 to restore the initial state, thereby facilitating the circuit breaker 100 to perform the next mechanical locking and unlocking by pressing.

[0053] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A circuit breaker (100) for plugging in a 1U rack, characterized in that, The circuit breaker comprises a shell (110), a circuit breaker body (120) and an electric operating mechanism (130) arranged in parallel in the shell (110), the circuit breaker body (120) comprises a manual operating mechanism (121), a moving contact (122) and a static contact (123), the electric operating mechanism (130), the manual operating mechanism (121) and the moving contact (122) are sequentially connected, the electric operating mechanism (130) is driven to drive the moving contact (122) to close or open the static contact (123) through the manual operating mechanism (121); the electric operating mechanism (130) comprises a circuit board (131), a motor (132), a sector gear (133) and a transmission shaft (134), the circuit board (131) is electrically connected with the motor (132), the motor (132), the sector gear (133) and the transmission shaft (134) are sequentially connected in transmission, the sector gear (133) is rotationally arranged in the shell (110), the transmission shaft (134) is connected in transmission with an inner handle (1211) of the manual operating mechanism (121), the circuit board (131) is used for controlling the motor (132) to abut or separate through the sector gear (133) and the transmission shaft (134), so that the moving contact (122) is driven by the manual operating mechanism (121) to contact or separate from the static contact (123); the sector gear (133) is sleeved on the transmission shaft (134), a first protrusion (1332) is arranged on one side of the sector gear (133) facing the transmission shaft (134), a second protrusion (1342) is arranged on the outer edge of the transmission shaft (134), the first protrusion (1332) is used for abutting against the second protrusion (1342), so that the sector gear (133) drives the transmission shaft (134) to rotate.

2. The circuit breaker (100) of claim 1, characterized in that A first Hall sensor (1311) is arranged on the circuit board (131) at a closing position, the circuit board (131) is electrically connected with the first Hall sensor (1311), and a first magnetic block (1341) is arranged on the transmission shaft (134). When the first magnetic block (1341) rotates to the closing position, the circuit board (131) is used for controlling the motor (132) to work according to a trigger signal of the first magnetic block (1341) acquired by the first Hall sensor (1311).

3. The circuit breaker (100) of claim 2, wherein, The electric operating mechanism (130) further comprises a trip lever (135) rotationally arranged in the shell (110), a third protrusion (1333) is further arranged on one side of the sector gear (133) facing the transmission shaft (134), and the third protrusion (1333) is used for abutting against the trip lever (135), so that the sector gear (133) drives the trip lever (135) to rotate and abut against a locking piece (1212) of the manual operating mechanism (121).

4. The circuit breaker (100) of claim 3, wherein, The circuit board (131) is provided with a second Hall sensor (1312) at the open position, and the circuit board (131) is electrically connected with the second Hall sensor (1312); When the first magnetic block (1341) rotates to the open position, the circuit board (131) is configured to control the motor (132) to work according to the trigger signal of the first magnetic block (1341) obtained by the second Hall sensor (1312).

5. The circuit breaker (100) according to claim 2 or 4, characterized in that The circuit board (131) is further provided with a third Hall sensor (1313) at the reset position, and the circuit board (131) is electrically connected with the third Hall sensor (1313), and the sector tooth (133) is provided with a second magnetic block (1331); When the second magnetic block (1331) rotates to the reset position, the circuit board (131) is further configured to control the motor (132) to be closed according to the trigger signal of the second magnetic block (1331) obtained by the third Hall sensor (1313).

6. The circuit breaker (100) of claim 3, wherein, The trip lever (135) includes a connecting portion (1351) and a resisting portion (1352) and an elastic portion (1353) respectively arranged on both sides of the connecting portion (1351), the trip lever (135) is rotationally connected with the shell (110) through the connecting portion (1351), the opposite sides of the resisting portion (1352) are respectively used for resisting the sector tooth (133) and the lock catch (1212), and one end of the elastic portion (1353) away from the resisting portion (1352) is used for resisting the shell (110) to provide a reset force for the rotation of the resisting portion (1352) relative to the shell (110).

7. The circuit breaker (100) of claim 5, wherein, The electric operating mechanism (130) further includes an unlocking button (136) slidingly arranged in the shell (110) and a push rod (137) having one end connected with the unlocking button (136), and the side of the sector tooth (133) facing the transmission shaft (134) is further provided with a fourth protrusion (1334), and the other end of the push rod (137) is used for resisting the fourth protrusion (1334) to drive the sector tooth (133) to rotate to the reset position of the second magnetic block (1331).

8. The circuit breaker (100) of claim 7, characterized in that The electric operating mechanism (130) further includes an elastic member (138), and the two ends of the elastic member (138) are respectively used for resisting the unlocking button (136) and the shell (110) to provide a reset force for the movement of the unlocking button (136) relative to the shell (110).

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