CN116364494A - Circuit breaker - Google Patents

Abstract

A circuit breaker relates to the technical field of electrical switches. The circuit breaker is used for being inserted in a 1U machine frame, comprises a shell, and a circuit breaker body and an electric operating mechanism which are arranged in the shell in parallel, wherein the circuit breaker body comprises a manual operating mechanism, a moving contact and a fixed contact, the electric operating mechanism, the manual operating mechanism and the moving contact are sequentially connected, and the electric operating mechanism is driven to drive the moving contact to be switched on or off with the fixed contact through the manual operating mechanism. The circuit breaker can be operated by the electric operating mechanism to switch on and off, and has the advantage of being capable of being controlled remotely, so that the flexibility and convenience of the circuit breaker in actual use are improved.

Description

Circuit breaker

Technical Field

The invention relates to the technical field of electrical switches, in particular to a circuit breaker.

Background

With the rapid development of social economy and urban construction, the living standard and living level of people are remarkably improved, and the electricity safety is more comprehensively perceived. To increase the safety of electricity, circuit breakers are typically connected in the electricity loop. A circuit breaker refers to a switching device capable of closing, carrying and opening a current under normal circuit conditions and closing, carrying and opening a current under abnormal circuit conditions within a prescribed time. When faults such as electric leakage, overload and short circuit occur in the system, the circuit breaker can rapidly cut off a fault circuit in the system or cut off the power supply of the whole power supply so as to prevent the faults from expanding and avoid huge economic loss and casualties.

The circuit breaker in the prior art mainly comprises an operation button, a manual operation mechanism, a contact mechanism, an input terminal, an output terminal and the like, wherein the manual operation button drives the contact mechanism to be switched on or off through the manual operation mechanism, so that the switching of the on state and the off state of a load is realized through the circuit breaker. However, the manual operation button is manually driven to perform the switching-on/off operation through the manual operation mechanism, so that the remote control cannot be realized, and the circuit breaker is inconvenient to use.

Disclosure of Invention

The invention aims to provide a circuit breaker which can be used for carrying out switching-on and switching-off operation through an electric operating mechanism and has the advantage of being capable of being controlled remotely, so that the flexibility and convenience of the circuit breaker in actual use are improved.

Embodiments of the present invention are implemented as follows:

the embodiment of the invention provides a circuit breaker which is used for being inserted into a 1U machine frame and comprises a shell, and a circuit breaker body and an electric operating mechanism which are arranged in the shell in parallel, wherein the circuit breaker body comprises a manual operating mechanism, a moving contact and a fixed contact, the electric operating mechanism, the manual operating mechanism and the moving contact are sequentially connected, and the electric operating mechanism is driven to drive the moving contact to be switched on or switched off with the fixed contact through the manual operating mechanism. The circuit breaker can be operated by the electric operating mechanism to switch on and off, and has the advantage of being capable of being controlled remotely, so that the flexibility and convenience of the circuit breaker in actual use are improved.

Optionally, electric operating mechanism includes circuit board, motor, fan-shaped tooth and transmission shaft, the circuit board with the motor electricity is connected, the motor fan-shaped tooth with the transmission shaft is transmission connection in proper order, fan-shaped tooth rotate set up in the casing, the transmission shaft with manual operating mechanism's interior handle transmission is connected, the circuit board is used for controlling the motor passes through fan-shaped tooth with the transmission shaft supports to hold or breaks away from, so that manual operating mechanism drives the moving contact with the static contact or separation.

Optionally, the fan-shaped tooth cover is located on the transmission shaft, the fan-shaped tooth is towards one side of transmission shaft is provided with first arch, the outer fringe of transmission shaft is provided with the second arch, first arch be used for with the second arch supports to hold, so that the fan-shaped tooth drives the transmission shaft rotates.

Optionally, a first hall sensor located at a closing position is arranged on the circuit board, the circuit board is electrically connected with the first hall sensor, and a first magnetic block is arranged on the transmission shaft; when the first magnetic block rotates to the closing position, the circuit board is used for controlling the motor to work according to the trigger signal of the first magnetic block acquired by the first Hall sensor.

Optionally, the electric operating mechanism further comprises a trip bar rotatably arranged in the shell, a third protrusion is further arranged on one side of the fan-shaped tooth, facing the transmission shaft, and the third protrusion is used for propping against the trip bar, so that the fan-shaped tooth drives the trip bar to rotate and propping against a locking piece of the manual operating mechanism.

Optionally, a second hall sensor with a brake-off position is arranged on the circuit board, and the circuit board is electrically connected with the second hall sensor; when the first magnetic block rotates to the opening position, the circuit board is used for controlling the motor to work according to the trigger signal of the first magnetic block acquired by the second Hall sensor.

Optionally, a third hall sensor positioned at a reset point is further arranged on the circuit board, the circuit board is electrically connected with the third hall sensor, and a second magnetic block is arranged on the sector tooth; when the second magnetic block rotates to the reset point, the circuit board is further used for controlling the motor to be turned off according to the trigger signal of the second magnetic block acquired by the third Hall sensor.

Optionally, the tripping lever includes connecting portion and set up respectively in the portion of holding and elastic component that supports of connecting portion both sides, the tripping lever passes through connecting portion with the casing rotates to be connected, the relative both sides of portion of holding be used for respectively with fan-shaped tooth with the latch supports, elastic component keep away from the one end of portion of holding with the casing supports, is used for right the portion of holding is relative the rotation of casing provides reset force.

Optionally, the electric operating mechanism further comprises an unlocking button and a push rod, wherein the unlocking button is arranged in the shell in a sliding mode, one end of the push rod is connected with the unlocking button, a fourth bulge is further arranged on one side, facing the transmission shaft, of the fan-shaped tooth, the other end of the push rod is used for propping against the fourth bulge, and the fan-shaped tooth is pushed to rotate until the second magnetic block reaches the reset point.

Optionally, the electric operating mechanism further comprises an elastic piece, wherein two ends of the elastic piece are respectively abutted against the unlocking button and the shell, and the elastic piece is used for providing a reset force for the motion of the unlocking button relative to the shell.

The beneficial effects of the embodiment of the invention include:

the circuit breaker comprises a shell, and a circuit breaker body and an electric operating mechanism which are arranged in the shell in parallel, wherein the circuit breaker body comprises a manual operating mechanism, a moving contact and a fixed contact, the electric operating mechanism, the manual operating mechanism and the moving contact are sequentially connected, and the electric operating mechanism is driven to drive the moving contact to be switched on or switched off with the fixed contact through the manual operating mechanism. The circuit breaker can be operated by a manual operation mechanism for switching on and off, and can be operated by an electric operation mechanism for switching on and off, so that the circuit breaker has the advantage of being capable of being controlled remotely, and the flexibility and convenience of the circuit breaker in actual use are improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is an exploded schematic view of a circuit breaker according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a circuit breaker in a closing state according to an embodiment of the present invention;

fig. 3 is a second schematic structural diagram of a circuit breaker in a closing state according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a circuit breaker in a breaking state according to an embodiment of the present invention;

fig. 5 is a second schematic structural diagram of a circuit breaker in a breaking state according to an embodiment of the present invention;

FIG. 6 is a schematic view of a sector tooth according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a transmission shaft according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a trip bar according to an embodiment of the present invention.

Icon: a 100-circuit breaker; 110-a housing; 120-a breaker body; 121-a manual operating mechanism; 1211-an inner handle; 1212-locking means; 122-moving contact; 123-fixed contact; 130-an electric operating mechanism; 131-a circuit board; 1311—a first hall sensor; 1312-a second hall sensor; 1313-a third hall sensor; 132-an electric motor; 133-sector teeth; 1331-a second magnetic block; 1332-first protrusions; 1333-third protrusions; 1334-fourth protrusions; 134-a drive shaft; 1341-first magnetic block; 1342-second protrusions; 135-trip bar; 1351-a connection; 1352—a holding portion; 13521-a first abutment projection; 13522-a second abutment projection; 1353-an elastic portion; 136-an unlock button; 137-push rod; 138-an elastic member; 139-gear set.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be connected between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 to 8, the embodiment of the application provides a circuit breaker 100 for plugging in a 1U frame, which includes a housing 110, and a circuit breaker body 120 and an electric operating mechanism 130 that are disposed in parallel in the housing 110, wherein the circuit breaker body 120 includes a manual operating mechanism 121, a moving contact 122 and a fixed contact 123, the electric operating mechanism 130, the manual operating mechanism 121 and the moving contact 122 are sequentially connected, and the electric operating mechanism 130 is driven to drive the moving contact 122 to close or open with the fixed contact 123 through the manual operating mechanism 121. The circuit breaker 100 can not only perform the switching-on and switching-off operation through the manual operation mechanism 121, but also perform the switching-on and switching-off operation through the electric operation mechanism 130, so that the circuit breaker 100 has the advantage of being capable of being remotely controlled, thereby improving the flexibility and convenience of the circuit breaker 100 in actual use.

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 in the housing 110, and the circuit breaker body 120 and the electric operating mechanism 130 are arranged in parallel (or in parallel). The circuit breaker 100 can not only perform the switching-on and switching-off operation through the manual operation mechanism 121, but also perform the switching-on and switching-off operation through the electric operation mechanism 130, so that the circuit breaker 100 has the advantage of being capable of being remotely controlled, 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 of the circuit breaker body 120 and the electric operating mechanism 130, those skilled in the art should be able to make reasonable choices and designs according to practical situations, and no specific limitation is made herein.

As an example, as shown in fig. 1, in the present embodiment, the housing 110 may include two sub-housings in a semi-closed structure disposed opposite to each other, and the two sub-housings together enclose a receiving space for receiving the circuit breaker body 120 and the electric operating mechanism 130, so as to improve the uniformity and the aesthetic appearance of the circuit breaker 100. On this basis, a partition plate for separating the accommodation space may be further provided between the two sub-housings to prevent the circuit breaker body 120 and the electric operating mechanism 130 from affecting each other. For example, the cross-sectional shapes of the two sub-housings and the partition plate are rectangular, and the length direction, the width direction and the height direction of the three sub-housings are respectively corresponding and parallel to each other, a part of the accommodating space located at one side of the partition plate is referred to as a left chamber, a part of the accommodating space located at the other side of the partition plate is referred to as a right chamber, the circuit breaker body 120 may be accommodated in the left chamber, the electric operating mechanism 130 may be accommodated in the right chamber, or the circuit breaker body 120 may be accommodated in the right chamber, and the electric operating mechanism 130 may be accommodated in the left chamber. It should be noted that, when the space layout is performed on the circuit breaker 100, the power source, the motor 132, the current divider, and the like of the electric operating mechanism 130 may be properly utilized in the internal space of the circuit breaker body 120, so that the electric operating mechanism 130 only needs to be able to work normally, thereby satisfying the design concept of miniaturization of the circuit breaker 100 as much as possible. For example, the current divider may be disposed on one side of the exhaust passage of the breaker body 120 to avoid affecting the normal operation of the breaker body 120, and at the same time, may be as close to the input terminal and the overload protection mechanism of the breaker body 120 as possible, so that one end of the current divider may be welded to the input terminal through the flexible wire, and the other end may be welded to the overload protection mechanism, and in addition, the signal output end of the current divider is electrically connected to the circuit board 131 to perform current detection through the current divider.

Of course, in other embodiments, the housing 110 may further include two sub-housings in a closed structure disposed in parallel, one sub-housing is used for accommodating the circuit breaker body 120, the other sub-housing is used for accommodating the electric operating mechanism 130, and two adjacent side walls of the two sub-housings are adhered and fixed to form a whole, so as to improve the convenience of the circuit breaker 100 in the manufacturing process. For example, the sub-housing for accommodating the circuit breaker body 120 and the sub-housing for accommodating the electric operating mechanism 130 are rectangular structures, and the length direction, the width direction and the height direction of the sub-housing are respectively corresponding and parallel to each other, and two side walls formed by the length direction and the width direction of the sub-housing for accommodating the circuit breaker body 120 are divided into a first side wall and a second side wall, and the sub-housing for accommodating the electric operating mechanism 130 can be located on one side of the first side wall far away from the second side wall and is fixedly connected with the first side wall in a mutually fitting manner, and can also be located on one side of the second side wall far away from the first side wall and is fixedly connected with the second side wall in a mutually fitting manner.

The breaker body 120 includes a manual operation mechanism 121, a moving contact 122 and a fixed contact 123, the manual operation mechanism 121 may include an operation button, an inner handle 1211, a bracket, a latch 1212 and a trip fastener, the bracket is rotatably disposed in the housing 110, the latch 1212, the trip fastener and the moving contact 122 are respectively rotatably disposed on the bracket, the operation button, the inner handle 1211 and the trip fastener are in transmission connection, the latch 1212 is used for buckling with the trip fastener, the moving contact 122 and the bracket can mutually support, the operation button is driven to drive the inner handle 1211 to move, so that the bracket, the latch 1212 and the trip fastener cooperate together to drive the moving contact 122 to close or open the brake with the fixed contact 123. In addition, the circuit breaker body 120 may further include an input terminal, an output terminal, an arc extinguishing mechanism, a short-circuit protection mechanism, and an overload protection mechanism, wherein the input terminal and the output terminal may be plug-in terminals, so that the input terminal can be plugged into an input terminal strip in the distribution box, and the output terminal can be plugged into an output terminal strip in the distribution box, thereby connecting the circuit breaker 100 into a circuit loop with a load. The arc extinguishing mechanism may include an arc striking plate and an arc extinguishing chamber to introduce an arc generated between the moving contact 122 and the fixed contact 123 during the opening of the short circuit into the arc extinguishing chamber through the arc striking plate to extinguish the arc, so as to improve the arc extinguishing capability of the circuit breaker 100. The short-circuit protection mechanism may be an electromagnetic trip, so that the circuit breaker 100 may be opened when a short-circuit fault occurs in the current, and the overload protection mechanism may be a thermal trip (e.g., a bimetal sheet), so that the circuit breaker 100 may be opened when an overload fault occurs in the current, so as to disconnect a power circuit with a load where the circuit breaker 100 is located, and ensure use safety of the load in the power circuit.

As shown in fig. 1, in this embodiment, the electric operating mechanism 130 includes a circuit board 131, a motor 132, a sector gear 133 and a transmission shaft 134, where the circuit board 131 is electrically connected to the motor 132, the sector gear 133 and the transmission shaft 134 are sequentially connected in a transmission manner, the sector gear 133 is rotatably disposed in the housing 110, the transmission shaft 134 is in transmission connection with an inner handle 1211 of the manual operating mechanism 121 (a separation plate or a sub-housing needs to be correspondingly provided with a avoidance hole), and the circuit board 131 is used for controlling the motor 132 to abut against or separate from the transmission shaft 134 through the sector gear 133, so that the manual operating mechanism 121 drives the moving contact 122 to contact or separate from the fixed contact 123. Optionally, the electric operator 130 further comprises a gear set 139, and the motor 132 is connected to the sector teeth 133 by the gear set 139. Illustratively, the gear set 139 includes a plurality of drive gears that are in turn coupled to drive movement between the motor 132 and the sector teeth 133. For example, the number of the transmission gears can be four, so that the reliability of transmission is ensured, and excessive accommodation space is avoided.

As shown in fig. 6 and 7, in the present embodiment, the fan-shaped tooth 133 is sleeved on the transmission shaft 134, a first protrusion 1332 is disposed on a side of the fan-shaped tooth 133 facing the transmission shaft 134, a second protrusion 1342 is disposed on an outer edge of the transmission shaft 134, and the first protrusion 1332 is used for abutting against the second protrusion 1342, so that the fan-shaped tooth 133 drives the transmission shaft 134 to rotate, and the inner handle 1211 of the manual operating mechanism 121 drives the moving contact 122 to contact with the fixed contact 123 to realize switching-on of the circuit breaker 100. The proportion of the teeth of the sector teeth 133 should be determined according to the rotational travel of the sector teeth 133, so long as the motor 132 (or the last transmission gear of the gear set 139) can always remain engaged with the sector teeth 133. Illustratively, the drive shaft 134 includes a cylindrical shaft portion and a polygonal shaft portion (e.g., a tetragonal shaft portion) coaxially disposed and connected to each other, so that the sector teeth 133 can be sleeved on the cylindrical shaft portion of the drive shaft 134, and at the same time, can be connected to the inner handle 1211 through the polygonal shaft portion (e.g., tetragonal shaft portion) of the drive shaft 134, so that the sector teeth 133 can synchronously rotate the inner handle 1211 through the drive shaft 134. In addition, the number of the first protrusions 1332 and the second protrusions 1342 may include two protrusions disposed opposite to each other, so that the reliability and stability of the synchronous movement of the fan-shaped teeth 133 driving the driving shaft 134 when the first protrusions 1332 and the second protrusions 1342 abut against each other are higher.

As shown in fig. 2 and 3, in the present embodiment, a first hall sensor 1311 located at a closing position is disposed on a circuit board 131, the circuit board 131 is electrically connected to the first hall sensor 1311, and a first magnetic block 1341 is disposed on a transmission shaft 134; when the first magnet 1341 rotates to the closing position, the circuit board 131 is configured to control the motor 132 to work according to the trigger signal of the first magnet 1341 acquired by the first hall sensor 1311.

Specifically, when the circuit breaker 100 performs a closing operation, the motor 132 drives the sector gear 133 to rotate in a counterclockwise direction, and since the first protrusion 1332 and the second protrusion 1342 abut against each other, the sector gear 133 can drive the transmission shaft 134 to synchronously rotate in the counterclockwise direction, and since the transmission shaft 134 is connected to the inner handle 1211 through a polygonal shaft portion (for example, a square shaft portion), the sector gear 133 can drive the inner handle 1211 of the manual operating mechanism 121 to synchronously rotate through the transmission shaft 134, and since the bracket of the manual operating mechanism 121, the latch 1212, the latch and the moving contact 122 form a whole, the moving contact 122 can be contacted with the fixed contact 123 under the driving of the inner handle 1211, thereby achieving closing. In the above process, the first magnetic block 1341 can gradually move to the closing position (from the opening position), where when the first magnetic block 1341 reaches the closing position, the first hall sensor 1311 senses the magnetic field of the first magnetic block 1341, and the circuit board 131 sends a command to stop rotating to the motor 132.

As shown in fig. 1 and 8, in the present embodiment, the electric operating mechanism 130 further includes a trip lever 135 rotatably disposed in the housing 110, and a third protrusion 1333 is further disposed on a side of the sector tooth 133 facing the transmission shaft 134, where the third protrusion 1333 is configured to abut against the trip lever 135, so that the sector tooth 133 drives the trip lever 135 to rotate and abut against the latch 1212 of the manual operating mechanism 121 (via the trip lever 135). Because the circuit breaker body 120 and the electric operating mechanism 130 are disposed in parallel, in order to enable the rotation of the trip lever 135 to abut against the latch 1212 of the manual operating mechanism 121, the rotation axis of the latch 1212 and the bracket that rotates relatively may be extended to be capable of contacting with the trip lever 135 (the spacer or the sub-housing needs to be correspondingly provided with an avoiding hole, and the avoiding hole should be disposed along the movement path of the rotation axis of the latch 1212).

It should be noted 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 bar 135 cannot interfere with each other, so as to avoid that one of the opening and closing operations cannot be performed normally, and those skilled in the art should be able to perform spatial layout between the first protrusion 1332, the second protrusion 1342, the third protrusion 1333 and the trip bar 135 according to the above requirements, which is not particularly limited herein. For example, the first protrusion 1332 and the second protrusion 1342 are disposed on a circumference having a first pitch from the rotation center of the sector gear 133, and the third protrusion 1333 and the trip bar 135 are disposed on a circumference track having a second pitch from the rotation center of the sector gear 133, wherein the second pitch is greater than the first pitch.

As shown in fig. 4 and 5, in the present embodiment, the circuit board 131 is provided with a second hall sensor 1312 at a brake-off position, and the circuit board 131 is electrically connected to the second hall sensor 1312; when the first magnetic block 1341 rotates to the opening position, the circuit board 131 is configured to control the motor 132 to operate according to the trigger signal of the first magnetic block 1341 acquired by the second hall sensor 1312.

Specifically, when the circuit breaker 100 performs the opening operation, the motor 132 drives the sector gear 133 to rotate clockwise, and since the first protrusion 1332 and the second protrusion 1342 are separated from each other, the transmission shaft 134 still stays at the closing position under the action of the manual operation mechanism 121, only the sector gear 133 rotates clockwise under the action of the motor 132, and as the sector gear 133 continuously rotates, the third protrusion 1333 can abut against the latch 1212 of the manual operation mechanism 121 through the release rod 135 to push the latch 1212 to rotate relative to the bracket, so that the bracket, the latch 1212, the latch and the moving contact 122 of the manual operation mechanism 121 are rapidly disassembled, and therefore, the moving contact 122 can be separated from the fixed contact 123 under the action of the reset spring connected with the same, thereby realizing opening. In the above process, since the transmission shaft 134 is connected to the inner handle 1211 through the polygonal shaft (for example, square shaft), the transmission shaft 134 can rotate rapidly under the driving of the inner handle 1211, that is, the first magnet 1341 can rotate rapidly (from the closing position) to the opening position, wherein when the first magnet 1341 reaches the opening position, the second hall sensor 1312 senses the magnetic field of the first magnet 1341, and the circuit board 131 sends a command to stop rotating to the motor 132.

In order to avoid that the switching-on/off of the electric operating mechanism 130 will interfere with the switching-on/off of the manual operating mechanism 121, as shown in fig. 2 to 5, in this embodiment, a third hall sensor 1313 located at a reset point is further disposed on the circuit board 131, the circuit board 131 is electrically connected to the third hall sensor 1313, and the sector teeth 133 are provided with second magnetic blocks 1331; when the second magnetic block 1331 rotates to the reset point, the circuit board 131 is further configured to control the motor 132 to be turned off according to the trigger signal of the second magnetic block 1331 acquired by the third hall sensor 1313.

Specifically, after the closing is achieved (a first time interval may be preset), the motor 132 drives the sector gear 133 to rotate in a clockwise direction, because the first protrusion 1332 and the second protrusion 1342 are separated from each other, the transmission shaft 134 still stays at the closing position under the action of the manual operation mechanism 121, only the sector gear 133 rotates in the clockwise direction under the action of the motor 132, and the second magnetic block 1331 moves to the reset point along with the continuous rotation of the sector gear 133, at this time, the third hall sensor 1313 senses the magnetic field of the second magnetic block 1331, and the circuit board 131 sends a command for stopping the rotation to the motor 132. In this way, a certain stroke is provided between the first protrusion 1332 and the second protrusion 1342, and the circuit breaker 100 can perform the opening operation by the manual operation mechanism 121, so that the opening operation of the manual operation mechanism 121 is not affected because the first protrusion 1332 and the second protrusion 1342 are still in a contact state.

Similarly, after the opening is achieved (a second time interval may be preset, the second time interval may be equal to or different from the first time interval), a person skilled in the art may perform reasonable selection and design according to the actual situation, without specific limitation, and the motor 132 drives the first sector gear 133 to rotate in the counterclockwise direction, and the third protrusion 1333 rotates synchronously in the counterclockwise direction, so that the trip bar 135 can move towards a side far from the latch 1212, and along with the continuous rotation of the sector gear 133, the second magnetic block 1331 moves to the reset point, at this time, the third hall sensor 1313 senses the magnetic field of the second magnetic block 1331, and the circuit board 131 sends a command for stopping rotation to the motor 132. In this way, a certain stroke is provided between the trip bar 135 and the latch 1212, so that the circuit breaker 100 can perform a closing operation through the manual operation mechanism 121, and the closing operation of the manual operation mechanism 121 is not affected because the trip bar 135 and the latch 1212 are still in a holding state.

As shown in fig. 8, in this embodiment, the trip bar 135 includes a connection portion 1351, and a holding portion 1352 and an elastic portion 1353 respectively disposed on two sides of the connection portion 1351, where the trip bar 135 is rotationally connected with the housing 110 through the connection portion 1351, and an installation shaft is provided on the housing 110, and an installation hole is provided on the connection portion 1351, so that the installation shaft can be correspondingly assembled in the installation hole, so that the trip bar 135 can be rotationally connected with the housing 110 through the connection portion 1351. The opposite sides of the holding portion 1352 are respectively used for holding the third protrusion 1333 of the sector-shaped tooth 133 and the latch 1212, for example, the opposite sides of the holding portion 1352 are respectively provided with a first holding protrusion 13521 for holding the sector-shaped tooth 133 and a second holding protrusion 13522 for holding the latch 1212, and a certain distance is formed between the first holding protrusion 13521 and the second holding protrusion 13522, so that the sector-shaped tooth 133 can be held against the first holding protrusion 13521 only by rotating a smaller stroke, and then can be held against the latch 1212 by continuing to rotate a smaller stroke. One end of the elastic portion 1353 away from the holding portion 1352 is held against the housing 110, so as to provide a restoring force for the rotation of the holding portion 1352 relative to the housing 110, so that the trip bar 135 can restore to an initial state under the action of the elastic portion 1353, and the circuit breaker 100 can normally perform the next switching-on and switching-off operation. It should be understood that the shape of the resilient portion 1353 in the drawings is for illustrative purposes only and is not intended to limit the actual shape of the resilient portion 1353.

As shown in fig. 1, 3, 5 and 6, in the present embodiment, the electric operating mechanism 130 further includes an unlocking button 136 slidably disposed in the housing 110 and a push rod 137 with one end connected to the unlocking button 136, a fourth protrusion 1334 is further disposed on a side of the sector gear 133 facing the transmission shaft 134, and the other end of the push rod 137 is used for abutting against the fourth protrusion 1334 to push the sector gear 133 to rotate to the second magnetic block 1331 to reach the restoring point. When the circuit breaker is not successfully closed for many times, the circuit breaker can be mechanically locked at the opening position, after the circuit breaker is overhauled abnormally by manpower, the unlocking button 136 is pressed manually to unlock, at this time, the unlocking button 136 can be abutted against the fourth protrusion 1334 of the sector gear 133 through the push rod 137, the sector gear 133 is rotated in the anticlockwise direction until the second magnetic block 1331 moves to the reset point, and at this time, the manual and electric closing operation can be continued normally. In order to guide the movement of the push rod 137, a guide block or a guide groove may be further provided on the housing 110 so that the pressing of the unlocking button 136 can be abutted by the push rod 137 with the fourth protrusion 1334 of the sector tooth 133.

As shown in fig. 1 to 5, in the present embodiment, the electric operating mechanism 130 further includes an elastic member 138, two ends of the elastic member 138 respectively support against the unlocking button 136 and the housing 110, and are used for providing a restoring force for the movement of the unlocking button 136 relative to the housing 110, so that the unlocking button 136 can drive the push rod 137 to move relative to the housing 110 to restore to an initial state, thereby facilitating the next mechanical locking and pressing unlocking of the circuit breaker 100.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a circuit breaker (100) for peg graft in 1U frame, its characterized in that, including casing (110) and be parallel set up in circuit breaker body (120) and electric operating mechanism (130) in casing (110), circuit breaker body (120) include manual operating mechanism (121), moving contact (122) and stationary contact (123), electric operating mechanism (130) manual operating mechanism (121) with moving contact (122) connect gradually, electric operating mechanism (130) drive through manual operating mechanism (121) drive moving contact (122) with stationary contact (123) combined floodgate or separating brake.

2. The circuit breaker (100) of claim 1, wherein the electric operating mechanism (130) comprises a circuit board (131), a motor (132), a sector tooth (133) and a transmission shaft (134), the circuit board (131) is electrically connected with the motor (132), the sector tooth (133) and the transmission shaft (134) are sequentially connected in a transmission manner, the sector tooth (133) is rotatably arranged in the housing (110), the transmission shaft (134) is in transmission connection with an inner handle (1211) of the manual operating mechanism (121), and the circuit board (131) is used for controlling the motor (132) to be propped against or separated from the transmission shaft (134) through the sector tooth (133) so that the manual operating mechanism (121) drives the moving contact (122) to be contacted with or separated from the fixed contact (123).

3. The circuit breaker (100) of claim 2, wherein the sector teeth (133) are sleeved on the transmission shaft (134), a first protrusion (1332) is disposed on a side, facing the transmission shaft (134), of the sector teeth (133), a second protrusion (1342) is disposed on an outer edge of the transmission shaft (134), and the first protrusion (1332) is configured to abut against the second protrusion (1342), so that the sector teeth (133) drive the transmission shaft (134) to rotate.

4. The circuit breaker (100) of claim 3, wherein a first hall sensor (1311) is disposed on the circuit board (131) and located at a closing position, the circuit board (131) is electrically connected to the first hall sensor (1311), and a first magnetic block (1341) is disposed 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 the trigger signal of the first magnetic block (1341) acquired by the first hall sensor (1311).

5. The circuit breaker (100) of claim 2, wherein the electrically operated mechanism (130) further comprises a trip lever (135) rotatably disposed in the housing (110), a third protrusion (1333) is further disposed on a side of the sector tooth (133) facing the transmission shaft (134), and the third protrusion (1333) is configured to abut against the trip lever (135), so that the sector tooth (133) drives the trip lever (135) to rotate and abut against a latch element (1212) of the manual operation mechanism (121).

6. The circuit breaker (100) of claim 5 wherein a second hall sensor (1312) is disposed on said circuit board (131) in a split position, said circuit board (131) being electrically connected to said second hall sensor (1312);

when the first magnetic block (1341) rotates to the opening position, the circuit board (131) is used for controlling the motor (132) to work according to the trigger signal of the first magnetic block (1341) acquired by the second hall sensor (1312).

7. The circuit breaker (100) of claim 4 or 6, wherein a third hall sensor (1313) located at a reset point is further disposed on the circuit board (131), the circuit board (131) is electrically connected to the third hall sensor (1313), and a second magnetic block (1331) is disposed on the sector tooth (133);

when the second magnetic block (1331) rotates to the reset point, the circuit board (131) is further used for controlling the motor (132) to be turned off according to a trigger signal of the second magnetic block (1331) acquired by the third Hall sensor (1313).

8. The circuit breaker (100) of claim 5, wherein the trip bar (135) includes a connection portion (1351), and a holding portion (1352) and an elastic portion (1353) respectively disposed on two sides of the connection portion (1351), the trip bar (135) is rotationally connected with the housing (110) through the connection portion (1351), two opposite sides of the holding portion (1352) are respectively used for holding with the sector tooth (133) and the latch (1212), and one end of the elastic portion (1353) away from the holding portion (1352) is held with the housing (110) for providing a restoring force for rotation of the holding portion (1352) relative to the housing (110).

9. The circuit breaker (100) of claim 7, wherein the electrically operated mechanism (130) further comprises an unlocking button (136) slidably disposed in the housing (110) and a push rod (137) having one end connected to the unlocking button (136), a fourth protrusion (1334) is further disposed on a side of the sector tooth (133) facing the transmission shaft (134), and the other end of the push rod (137) is configured 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.

10. The circuit breaker (100) of claim 9, wherein the electrically operated mechanism (130) further comprises an elastic member (138), and wherein the elastic member (138) is respectively abutted against the unlocking button (136) and the housing (110) at both ends thereof for providing a restoring force to the movement of the unlocking button (136) relative to the housing (110).

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