CN216902746U - Circuit breaker - Google Patents

Abstract

A circuit breaker relates to the technical field of electrical switches. The circuit breaker is used for being inserted into a 1U machine frame and comprises a shell, a circuit breaker body and an electric operating mechanism, wherein the circuit breaker body and the electric operating mechanism are arranged in the shell in parallel, 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. This circuit breaker can close the separating brake operation through electric operating mechanism, has the advantage that can remote control to improve flexibility and the convenience of circuit breaker when the in-service use.

Description

Circuit breaker

Technical Field

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

Background

Along with the rapid development of social economy and urban construction, the living standard and the living standard of people are remarkably improved, and the electricity safety is more comprehensively known. In order to increase the safety of the electricity consumption, a circuit breaker is usually connected to the electricity consumption circuit. The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition within a prescribed time. When faults such as electric leakage, overload, short circuit and the like occur in the system, the circuit breaker can quickly cut off a fault circuit in the system or cut off the power supply of the whole power supply so as to prevent the expansion of the faults and avoid causing huge economic loss and casualties.

The circuit breaker in the prior art mainly comprises an operating button, a manual operating mechanism, a contact mechanism, an input terminal, an output terminal and the like, wherein the manual operating button is driven by a person to drive the contact mechanism to be switched on or switched off through the manual operating mechanism, so that the switching of a load on state and a load off state is realized through the circuit breaker. However, the manual operation of the operating button is performed through the manual operating mechanism, which causes the disadvantage that the remote control cannot be realized, and the circuit breaker is inconvenient to use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a circuit breaker, which can carry out switching on and switching off operations through an electric operating mechanism and has the advantage of remote control, thereby improving the flexibility and convenience of the circuit breaker in actual use.

The embodiment of the utility model is realized by the following steps:

the embodiment of the utility model provides a circuit breaker, which is used for being inserted into a 1U machine frame and comprises a shell, a circuit breaker body and an electric operating mechanism, wherein the circuit breaker body and the electric operating mechanism are arranged in the shell in parallel, 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 and the fixed contact to be switched on or switched off through the manual operating mechanism. This circuit breaker can close the separating brake operation through electric operating mechanism, has the advantage that can remote control to improve flexibility and the convenience of circuit breaker when the in-service use.

Optionally, the electric operating mechanism includes a circuit board, a motor, a sector gear and a transmission shaft, the circuit board is electrically connected to the motor, the sector gear and the transmission shaft are sequentially in transmission connection, the sector gear is rotatably disposed in the housing, the transmission shaft is in transmission connection with an inner handle of the manual operating mechanism, and the circuit board is configured to control the motor to abut against or separate from the transmission shaft through the sector gear, so that the manual operating mechanism drives the moving contact to contact with or separate from the stationary contact.

Optionally, the fan-shaped teeth are sleeved on the transmission shaft, a first protrusion is arranged on one side, facing the transmission shaft, of each fan-shaped tooth, a second protrusion is arranged on the outer edge of the transmission shaft, and the first protrusion is used for abutting against the second protrusion, so that the fan-shaped teeth drive the transmission shaft to rotate.

Optionally, a first hall sensor located at a switch-on 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 switching-on 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 includes a trip rod rotatably disposed in the housing, a third protrusion is further disposed on one side of the sector gear facing the transmission shaft, and the third protrusion is used for abutting against the trip rod, so that the sector gear drives the trip rod to rotate and abuts against a lock catch of the manual operating mechanism.

Optionally, a second hall sensor of the switching-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 brake separating 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 located 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-shaped 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 trip bar includes a connecting portion, and a supporting portion and an elastic portion respectively disposed at two sides of the connecting portion, the trip bar is rotatably connected to the housing through the connecting portion, two opposite sides of the supporting portion are respectively configured to support the sector gear and the locking member, one end of the elastic portion, which is far away from the supporting portion, is supported by the housing, and is configured to provide a restoring force for rotation of the supporting portion relative to the housing.

Optionally, the electric operating mechanism further comprises an unlocking button arranged in the shell in a sliding mode and a push rod with one end connected with the unlocking button, the sector-shaped teeth face to one side of the transmission shaft and are further provided with a fourth protrusion, and the other end of the push rod is used for abutting against the fourth protrusion to push the sector-shaped teeth to rotate to the second magnetic block to reach the reset point.

Optionally, the electric operating mechanism further includes an elastic member, and two ends of the elastic member respectively abut against the unlocking button and the housing, and are configured to provide a resetting force for the movement of the unlocking button relative to the housing.

The embodiment of the utility model has the beneficial effects that:

the circuit breaker comprises a shell, a circuit breaker body and an electric operating mechanism, wherein the circuit breaker body and the electric operating mechanism are arranged in the shell in parallel, 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 used for switching on and off the brake through the manual operation mechanism and also can be used for switching on and off the brake through the electric operation mechanism, so that the circuit breaker has the advantage of remote control, 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 needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

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

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

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

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

FIG. 6 is a schematic structural diagram of a sector gear according to an embodiment of the present invention;

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

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

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

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of 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 present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the 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 otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be internal to both elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 8, an embodiment of the present application provides a circuit breaker 100 for being inserted into a 1U machine frame, which includes a housing 110, a circuit breaker body 120 and an electric operating mechanism 130 that are disposed in parallel in the housing 110, where 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 sequentially connected, and the electric operating mechanism 130 is driven to drive the moving contact 122 and the stationary contact 123 to close or open through the manual operating mechanism 121. The circuit breaker 100 can perform switching on and off operations through the manual operation mechanism 121 and can also perform switching on and off operations through the electric operation mechanism 130, so that the circuit breaker 100 has the advantage of being remotely controlled, and the flexibility and convenience of the circuit breaker 100 in actual use are improved.

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 switching on and off operations through the manual operation mechanism 121, but also perform switching on and off operations through the electric operation mechanism 130, so that the circuit breaker has the advantage of being remotely controllable, and the flexibility and the convenience of the circuit breaker 100 in actual use are improved. Regarding the specific structure of the housing 110 and the relative position relationship between the circuit breaker body 120 and the electric operating mechanism 130, those skilled in the art should be able to make reasonable selection and design according to the actual situation, and no specific limitation is made here.

For example, as shown in fig. 1, in the present embodiment, the housing 110 may include two sub-housings of a semi-closed structure, which are oppositely disposed, and the two sub-housings jointly enclose an accommodating space for accommodating the circuit breaker body 120 and the electric operating mechanism 130, so as to improve the appearance consistency and the aesthetic appearance of the circuit breaker 100. On this basis, a partition for dividing the accommodating space may be further disposed 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, the length direction, the width direction and the height direction of the three sub-housings and the partition plate are respectively corresponding and parallel to each other, a part of the accommodating space on one side of the partition plate is called a left chamber, a part of the accommodating space on the other side of the partition plate is called a right chamber, the circuit breaker body 120 is accommodated in the left chamber, the electric operating mechanism 130 is accommodated in the right chamber, the circuit breaker body 120 is accommodated in the right chamber, and the electric operating mechanism 130 is accommodated in the left chamber. It should be noted that, when the circuit breaker 100 is spatially arranged, the power supply, the motor 132, the shunt, and the like of the electric operating mechanism 130 may appropriately use the internal space of the circuit breaker body 120, and only the electric operating mechanism 130 may normally operate, so as to satisfy the design concept of miniaturization of the circuit breaker 100 as much as possible. For example, the shunt may be disposed at one side of the exhaust passage of the circuit breaker body 120 to avoid affecting the normal operation of the circuit breaker body 120, and at the same time, may be as close as possible to the input terminal and the overload protection mechanism of the circuit breaker body 120, so that one end of the shunt can be welded to the input terminal through a flexible wire, and the other end of the shunt can be welded to the overload protection mechanism, and in addition, the signal output end of the shunt is electrically connected to the circuit board 131 to perform current detection through the shunt.

Of course, in other embodiments, the housing 110 may further include two sub-housings in a closed structure, which are disposed in parallel, one of the sub-housings is used to accommodate the circuit breaker body 120, the other sub-housing is used to accommodate the electric operating mechanism 130, and two adjacent side walls of the two sub-housings are attached and fixed to form a whole, so as to improve the simplicity of the circuit breaker 100 in the manufacturing process. Illustratively, the sub-housing for accommodating the circuit breaker body 120 and the sub-housing for accommodating the electric operating mechanism 130 are both rectangular structures, and the length direction, the width direction and the height direction of the two sub-housings correspond to each other and are parallel to each other, 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, the sub-housing for accommodating the electric operating mechanism 130 can be located on one side of the first side wall away from the second side wall and is fixedly connected with the first side wall in an mutually attached manner, and can also be located on one side of the second side wall away from the first side wall and is fixedly connected with the second side wall in an mutually attached manner.

The circuit breaker body 120 includes a manual operation mechanism 121, a movable contact 122 and a fixed contact 123, the manual operation mechanism 121 may include an operation button, an inner handle 1211, a support, a locking element 1212 and a trip element, the support is rotatably disposed in the housing 110, the locking element 1212, the trip element and the movable contact 122 are respectively rotatably disposed on the support, the operation button, the inner handle 1211 and the trip element are in transmission connection, the locking element 1212 is used for being buckled with the trip element, the movable contact 122 and the support can be abutted against each other, the operation button is driven to drive the inner handle 1211 to move, so that the support, the locking element 1212 and the trip element cooperate together to drive the movable contact 122 to be switched on or switched off 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 row in the distribution box, and the output terminal can be plugged into an output terminal row in the distribution box, thereby connecting the circuit breaker 100 to an electric circuit having a load. The arc extinguishing mechanism may include an arc striking plate and an arc extinguishing chamber, so that an arc generated between the moving contact 122 and the stationary contact 123 when the short circuit is opened is introduced into the arc extinguishing chamber through the arc striking plate to extinguish the arc, thereby improving the arc extinguishing capability of the circuit breaker 100. The short-circuit protection mechanism may be an electromagnetic trip device to enable the circuit breaker 100 to be opened when a short-circuit fault occurs in the current, and the overload protection mechanism may be a thermal trip device (e.g., a bimetal) to enable the circuit breaker 100 to be opened when an overload fault occurs in the current, so as to open a power circuit with a load where the circuit breaker 100 is located, thereby ensuring the 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, 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 connected in a transmission manner to the inner handle 1211 of the manual operating mechanism 121 (an avoiding hole needs to be correspondingly formed on the partition board or the sub-housing), and the circuit board 131 is used for controlling the motor 132 to abut against or separate from the sector gear 133 and the transmission shaft 134, so that the manual operating mechanism 121 drives the movable contact 122 to contact with or separate from the stationary contact 123. Optionally, the electric operating mechanism 130 further includes a gear set 139, and the motor 132 is coupled to the sector teeth 133 via the gear set 139. Illustratively, the gear set 139 includes a plurality of drive gears that are sequentially coupled to provide drive for movement between the motor 132 and the scallops 133. For example, the number of the transmission gears can be four, so that the transmission reliability is ensured, and the excessive occupation of the accommodating space is avoided.

As shown in fig. 6 and 7, in the present embodiment, the sector-shaped teeth 133 are sleeved on the transmission shaft 134, a first protrusion 1332 is disposed on one side of the sector-shaped teeth 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 sector-shaped teeth 133 drive the transmission shaft 134 to rotate, and thus the inner handle 1211 of the manual operating mechanism 121 drives the movable contact 122 to contact with the stationary contact 123, thereby implementing switching on of the circuit breaker 100. The ratio of the teeth of the sector-shaped teeth 133 should be determined according to the rotation stroke of the sector-shaped teeth 133, and it is only necessary to keep the motor 132 (or the last transmission gear of the gear set 139) engaged with the sector-shaped teeth 133 all the time. Illustratively, the transmission shaft 134 includes a cylindrical shaft portion and a polygonal shaft portion (e.g., a square shaft portion) that are coaxially disposed and connected to each other, so that the sector-shaped teeth 133 can be sleeved on the cylindrical shaft portion of the transmission shaft 134, and meanwhile, the sector-shaped teeth 133 can be connected to the inner handle 1211 through the polygonal shaft portion (e.g., the square shaft portion) of the transmission shaft 134, so that the sector-shaped teeth 133 can drive the inner handle 1211 to rotate synchronously through the transmission shaft 134. In addition, the number of the first protrusions 1332 and the second protrusions 1342 may include two protrusions oppositely disposed, so that when the first protrusions 1332 and the second protrusions 1342 abut against each other, the fan-shaped teeth 133 drive the transmission shaft 134 to move synchronously with higher reliability and stability.

As shown in fig. 2 and 3, in the present embodiment, a first hall sensor 1311 located at a switch-on position is disposed on the 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 the transmission shaft 134; when the first magnetic block 1341 rotates to the switch-on 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 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 the counterclockwise direction, and the first protrusion 1332 and the second protrusion 1342 abut against each other, so the sector gear 133 can drive the transmission shaft 134 to rotate synchronously in the counterclockwise direction, and the transmission shaft 134 is connected to the inner handle 1211 through a polygonal shaft (e.g., a square shaft), so the sector gear 133 can drive the inner handle 1211 of the manual operation mechanism 121 to rotate synchronously through the transmission shaft 134, and since the bracket of the manual operation mechanism 121, the locking component 1212, the trip component, and the movable contact 122 form a whole, the movable contact 122 can contact the fixed contact 123 under the driving of the inner handle 1211, thereby achieving a closing operation. In the above process, the first magnetic block 1341 can gradually move (from an open position to a closed position), wherein when the first magnetic block 1341 reaches the closed 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 the motor 132 to stop rotating.

As shown in fig. 1 and fig. 8, in the present embodiment, the electric operating mechanism 130 further includes a trip lever 135 rotatably disposed in the housing 110, a third protrusion 1333 is further disposed on a side of the sector-shaped 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-shaped tooth 133 drives the trip lever 135 to rotate and abut against the locking member 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 arranged in parallel, here, in order to enable the rotation of the trip bar 135 to abut against the latch 1212 of the manual operating mechanism 121, the rotation axis of the latch 1212 and the rotation axis of the bracket which rotate relatively can be extended to contact with the trip bar 135 (the partition or the sub-housing needs to be correspondingly provided with the avoiding hole, and the avoiding hole should be arranged 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 switching operations cannot be performed normally, and those skilled in the art should be able to perform the spatial layout among the first protrusion 1332, the second protrusion 1342, the third protrusion 1333 and the trip bar 135 according to the above requirements, and this is not limited in particular. For example, the first protrusion 1332 and the second protrusion 1342 are disposed on a circle having a first distance from the rotational center of the sector gear 133, and the third protrusion 1333 and the trip lever 135 are disposed on a circle locus having a second distance from the rotational center of the sector gear 133, wherein the second distance is greater than the first distance.

As shown in fig. 4 and 5, in the present embodiment, a second hall sensor 1312 of the trip position is disposed 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 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 in the clockwise direction, 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 in the clockwise direction under the action of the motor 132, and along with the continuous rotation of the sector gear 133, the third protrusion 1333 can abut against the locking piece 1212 of the manual operation mechanism 121 through the trip rod 135, and pushes the locking piece 1212 to rotate relative to the bracket, so that the bracket, the locking piece 1212, the trip piece, and the locking 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 thereto, thereby achieving the opening operation. In the above process, since the transmission shaft 134 is connected to the inner handle 1211 through the polygonal shaft portion (e.g., the square shaft portion), the transmission shaft 134 can be driven by the inner handle 1211 to rotate quickly, that is, the first magnetic block 1341 can rotate quickly (from the on position) to the off position, wherein when the first magnetic block 1341 reaches the off position, the second hall sensor 1312 senses the magnetic field of the first magnetic block 1341, and the circuit board 131 sends a command to the motor 132 to stop rotating.

In order to avoid interference of the on/off switch of the electric operating mechanism 130 to the on/off switch of the manual operating mechanism 121, as shown in fig. 2 to 5, in this embodiment, the circuit board 131 is further provided with a third hall sensor 1313 located at the reset point, the circuit board 131 is electrically connected to the third hall sensor 1313, and the sector-shaped tooth 133 is provided with a second magnetic block 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 turn off according to the trigger signal of the second magnetic block 1331 acquired by the third hall sensor 1313.

Specifically, after the switch-on is implemented (a first time interval may be preset), the motor 132 first drives the sector gear 133 to rotate in the clockwise direction, and since the first protrusion 1332 and the second protrusion 1342 may be disengaged, the transmission shaft 134 still stays at the switch-on 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 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 of stopping the rotation to the motor 132. Thus, a certain stroke is provided between the first protrusion 1332 and the second protrusion 1342, so that the circuit breaker 100 can perform the opening operation through the manual operating mechanism 121, and the opening operation of the manual operating mechanism 121 is not affected because the first protrusion 1332 and the second protrusion 1342 are still in the abutting state.

Similarly, after the switching-off is implemented (a second time interval may be preset, and the second time interval may be equal to or different from the first time interval, and a person skilled in the art may reasonably select and design according to actual conditions, and no specific limitation is made herein), the motor 132 drives the sector-shaped tooth 133 to rotate in the counterclockwise direction, and the third protrusion 1333 rotates in synchronization with the counterclockwise direction, so that the trip lever 135 can move toward the side away from the locking piece 1212, and along with the continuous rotation of the sector-shaped tooth 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 stop rotation instruction to the motor 132. Therefore, a certain stroke is provided between the trip bar 135 and the locking element 1212, so that the circuit breaker 100 can perform the closing operation through the manual operating mechanism 121 without affecting the closing operation of the manual operating mechanism 121 because the trip bar 135 and the locking element 1212 are still in the abutting state.

As shown in fig. 8, in the present embodiment, the trip lever 135 includes a connecting portion 1351, and an abutting portion 1352 and an elastic portion 1353 respectively disposed on two sides of the connecting portion 1351, and 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, in which the mounting shaft can be correspondingly mounted, so that the trip lever 135 can be rotatably connected to the housing 110 through the connecting portion 1351. For example, the two opposite sides of the supporting portion 1352 are respectively provided with a first supporting protrusion 13521 for supporting the sector-shaped tooth 133 and a second supporting protrusion 13522 for supporting the locking element 1212, and a certain distance is provided between the first supporting protrusion 13521 and the second supporting protrusion 13522, so that the sector-shaped tooth 133 can be supported against the first supporting protrusion 13521 only by a small rotation stroke, and then can be supported against the locking element 1212 by the second supporting protrusion 13522 by continuing to rotate by a small rotation stroke. One end of the elastic portion 1353, which is away from the abutting portion 1352, abuts against the housing 110, and is used for providing a reset force for the rotation of the abutting portion 1352 relative to the housing 110, so that the trip rod 135 can be restored to the initial state under the action of the elastic portion 1353, and the circuit breaker 100 can normally perform the next switching operation. It should be understood that the shape of the elastic portion 1353 in the drawings is for illustrative purposes only and is not intended to specifically limit the actual shape of the elastic 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 having one end connected to the unlocking button 136, one side of the sector-shaped 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 abutting against the fourth protrusion 1334 to push the sector-shaped tooth 133 to rotate to the second magnetic block 1331 to reach the reset point. When the circuit breaker is not successfully switched on for many times, the circuit breaker can be mechanically locked at a switching-off position, after the circuit breaker is abnormally overhauled, the circuit breaker is unlocked by manually pressing the unlocking button 136, at the moment, the unlocking button 136 can be abutted against the fourth protrusion 1334 of the sector-shaped tooth 133 through the push rod 137, the sector-shaped tooth 133 is rotated along the anticlockwise direction until the second magnetic block 1331 moves to a reset point, and at the moment, manual and electric switching-on operation can be continuously and normally carried out. In order to guide the movement of the push rod 137, a guide block or a guide groove may be further disposed on the housing 110, so that the push-release button 136 can be pressed against the fourth protrusion 1334 of the sector-shaped teeth 133 through the push rod 137.

As shown in fig. 1 to fig. 5, in the embodiment, the electric operating mechanism 130 further includes an elastic member 138, and two ends of the elastic member 138 respectively abut against the unlocking button 136 and the housing 110, so as to provide a reset 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 return to the initial state, thereby facilitating the next mechanical locking and pressing unlocking of the circuit breaker 100.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement 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, include casing (110) and be parallel arrangement 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 static contact (123), electric operating mechanism (130) manual operating mechanism (121) with moving contact (122) connect gradually, electric operating mechanism (130) are driven and are passed through manual operating mechanism (121) drive moving contact (122) with static contact (123) combined floodgate or separating brake.

2. The circuit breaker (100) according to claim 1, wherein 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 to the motor (132), the sector gear (133) and the transmission shaft (134) are sequentially in transmission connection, 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), and the circuit board (131) is configured to control the motor (132) to be abutted or disengaged by the sector gear (133) and the transmission shaft (134), so that the manual operating mechanism (121) drives the movable contact (122) to be in contact with or separated from the fixed contact (123).

3. The circuit breaker (100) according to claim 2, wherein the fan-shaped teeth (133) are sleeved on the transmission shaft (134), a first protrusion (1332) is disposed on one side of the fan-shaped teeth (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 teeth (133) drive the transmission shaft (134) to rotate.

4. The circuit breaker (100) of claim 3, wherein the circuit board (131) is provided with a first Hall sensor (1311) at a switch-on position, the circuit board (131) is electrically connected with the first Hall sensor (1311), and the transmission shaft (134) is provided with a first magnetic block (1341);

when the first magnetic block (1341) rotates to the switch-on 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).

5. The circuit breaker (100) of claim 4, wherein the electric operating mechanism (130) further comprises a trip lever (135) rotatably disposed in the housing (110), one side of the sector-shaped tooth (133) facing the transmission shaft (134) is further provided with a third protrusion (1333), and the third protrusion (1333) is configured to abut against the trip lever (135), so that the sector-shaped tooth (133) drives the trip lever (135) to rotate and abut against a latch (1212) of the manual operating mechanism (121).

6. The circuit breaker (100) of claim 5, wherein the circuit board (131) is provided with a second Hall sensor (1312) of the trip 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 used for controlling the motor (132) to work according to a trigger signal of the first magnetic block (1341) acquired by the second hall sensor (1312).

7. The circuit breaker (100) according to claim 4 or 6, wherein a third Hall sensor (1313) is arranged on the circuit board (131) and located at a reset point, the circuit board (131) is electrically connected with the third Hall sensor (1313), and a second magnetic block (1331) is arranged on the fan-shaped tooth (133);

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

8. The circuit breaker (100) according to claim 5, wherein the trip bar (135) comprises a connecting portion (1351) and an abutting portion (1352) and a resilient portion (1353) respectively disposed on two sides of the connecting portion (1351), the trip bar (135) is rotatably connected to the housing (110) through the connecting portion (1351), two opposite sides of the abutting portion (1352) are respectively configured to abut against the scallops (133) and the locking member (1212), and one end of the resilient portion (1353) away from the abutting portion (1352) abuts against the housing (110) for providing a restoring force for the rotation of the abutting portion (1352) relative to the housing (110).

9. The circuit breaker (100) according to claim 7, wherein the electric operating 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-shaped tooth (133) facing the transmission shaft (134), and another end of the push rod (137) is configured to abut against the fourth protrusion (1334) to push the sector-shaped tooth (133) to rotate to the second magnetic block (1331) to reach the reset point.

10. The circuit breaker (100) of claim 9, wherein said electric operating mechanism (130) further comprises an elastic member (138), two ends of said elastic member (138) respectively abut against said unlocking button (136) and said housing (110) for providing a reset force for the movement of said unlocking button (136) relative to said housing (110).

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