Electrically operated mechanism and circuit breaker having the same

Abstract

The utility model provides a kind of electric operating mechanism and circuit breaker with it, electric operating mechanism includes electric operation shell, handle is provided in electric operation shell, driving mechanism, indicating piece and micro switch, driving mechanism can drive handle rotation, handle is used to realize the switching of circuit breaker and closing, indicating piece includes same movement part and dialing part, same movement part is connected with handle and can rotate synchronously with handle, dialing part can rotate synchronously with same movement part, micro switch is used to indicate the working condition of circuit breaker, micro switch is located on the movement path of dialing part, when circuit breaker closes, dialing part pushes micro switch to close;When circuit breaker opens or is tripped, dialing part is away from micro switch, and micro switch is disconnected;Optimize the internal space layout of electric operating mechanism, indicating piece with dialing part is engaged with handle rotation, replace traditional auxiliary accessory, optimize the internal space layout of electric operating mechanism, without producing separate parts, reduce cost.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, specifically to an electric operating mechanism and a circuit breaker having the same. Background Technology

[0002] A circuit breaker is an important electrical device whose main function is to switch power distribution circuits, motors, or other electrical equipment in a power system on and off, and to automatically disconnect the circuit in case of abnormal conditions such as overload, short circuit, or undervoltage, thereby providing protection. The electric operating mechanism of the circuit breaker is the core component for achieving remote automatic opening and closing control. It drives a mechanical transmission system through a drive mechanism, replacing manual operation to complete the state switching of the circuit breaker.

[0003] Currently, most miniature circuit breakers on the market are equipped with auxiliary alarm accessories to achieve status indication and trip alarm functions. These accessories generally adopt simple mechanical or electronic designs, with single and fixed functions, lacking unified standards, and varying in size and specifications. This not only brings inconvenience to the manufacturing process but also adds difficulty to subsequent installation and maintenance. More importantly, these accessories mostly exist in the form of independent splicing. Even if the structure is simplified and the space occupied is reduced as much as possible during the design process, as an additional independent module, it will inevitably occupy a certain installation position and require additional space allocation. In some scenarios with strict space requirements, this will undoubtedly limit the flexibility of equipment layout and may even affect the construction of the overall circuit system due to insufficient space. In addition, the production, warehousing, transportation, installation, and commissioning of independent accessories all require dedicated manpower, material resources, and financial resources, which invisibly increases the production costs and human resource consumption of enterprises.

[0004] Therefore, there is a need for a structure that can be integrated with other components within the circuit breaker and reliably achieve the same function, eliminating the need for this separate accessory, thereby significantly saving installation space and reducing production costs and human resource input. Summary of the Invention

[0005] The purpose of this utility model is to provide an electric operating mechanism and a circuit breaker having the same, so as to solve the above-mentioned problems.

[0006] The technical solution adopted in this utility model is as follows:

[0007] An electric operating mechanism is applied to a circuit breaker. The electric operating mechanism includes an electric operating housing, within which are disposed a handle, a drive mechanism, an indicator, and a micro switch. The drive mechanism drives the handle to rotate, and the handle is used to open and close the circuit breaker. The indicator includes a synchronous part and a toggle part. The synchronous part is connected to the handle and can rotate synchronously with the handle. The toggle part can rotate synchronously with the synchronous part. The micro switch is used to indicate the operating status of the circuit breaker. The micro switch is located on the movement path of the toggle part. When the circuit breaker is closed, the toggle part pushes the micro switch to close; when the circuit breaker is open or tripped, the toggle part moves away from the micro switch, and the micro switch opens.

[0008] As a further improvement of this utility model, a first tooth segment is provided on the handle, the teeth on the first tooth segment are arranged in an arc shape, and a second tooth segment is provided on the moving part, the first tooth segment can mesh with the second tooth segment.

[0009] As a further improvement of this utility model, the actuating part is positioned away from the second tooth segment.

[0010] As a further improvement of the present invention, the actuating part is a crank arm, the crank arm is arc-shaped or bent at an obtuse angle, and the crank arm extends away from the micro switch.

[0011] As a further improvement of the present invention, a gear reduction mechanism is also provided inside the electric control housing. The gear reduction mechanism is connected to the drive mechanism and the handle. The gear reduction mechanism is used to adjust the output force of the drive mechanism and transmit it to the handle. The actuating element can be set on a rotating shaft of the gear reduction mechanism.

[0012] As a further improvement of this utility model, the electric operating mechanism further includes an indicator circuit, a PCB board, and a terminal block assembly. The micro switch is connected to the PCB board, and the PCB board can transmit the on / off signal of the micro switch to the indicator circuit through the terminal block assembly. The indicator circuit includes a switching switch S, a tripping indicator circuit TC, and a closing indicator circuit CC. According to the on / off signal of the micro switch, the switching switch S can be switched to the tripping indicator circuit TC or the closing indicator circuit CC. When the micro switch is open, the switching switch S connects to the tripping indicator circuit TC. When the micro switch is closed, the switching switch S connects to the closing indicator circuit CC.

[0013] As a further improvement of the present invention, the terminal block assembly includes a common interface, a tripping interface, and a closing interface. The common interface is connected to the moving contact of the PCB board and the switching switch S respectively via wires. The tripping interface is connected to the normally closed contact of the switching switch S via wires. The closing interface is connected to the normally open contact of the switching switch S via wires.

[0014] As a further improvement of this utility model, a tripping indicator device is provided in the tripping indicator circuit TC, and a closing indicator device is provided in the closing indicator circuit CC.

[0015] As a further improvement of this utility model, a circuit breaker control module is also provided on the electric operating mechanism. The circuit breaker control module is integrated on the side wall of the electric operating mechanism. The circuit breaker control module includes a controller, a circuit breaker command input interface and a circuit breaker command input interface. The circuit breaker command input interface and the circuit breaker command input interface are externally connected to the controller. The controller can control the start and stop of the drive mechanism according to the command of the circuit breaker command input interface or the circuit breaker command input interface.

[0016] A circuit breaker includes a circuit breaker body fixedly connected to an electric operating mechanism as described above. A handle sleeve is provided inside the electric operating mechanism, and the handle is disposed inside the handle sleeve. A drive mechanism can drive the handle sleeve to rotate, and the handle sleeve can drive the handle to rotate.

[0017] The beneficial effects of this utility model are as follows:

[0018] The above structure optimizes the internal space layout of the electric operating mechanism. The indicator with a rotating part that meshes with the handle replaces the traditional auxiliary accessories, thus optimizing the internal space layout of the electric operating mechanism, eliminating the need to produce separate parts, and reducing costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the internal structure of the electric operating mechanism;

[0020] Figure 2 This is a schematic diagram of a circuit breaker.

[0021] Wherein: 100-electric operating mechanism, 101-electric operating housing, 1021-drive mechanism, 1022-gear reduction mechanism, 103-synchronizing part, 1031-second gear segment, 104-toggle part, 105-micro switch, 106-PCB board, 107-terminal block assembly, 1071-common interface, 1072-opening interface, 1073-closing interface, 1081-opening command input interface, 1082-closing command input interface, 109-handle sleeve, 200-circuit breaker, 201-handle, 2011-first gear segment, 202-buckle. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0023] If the description of this utility model involves directions (e.g., up, down, left, right, front, back, outside, inside, etc.), then the directions involved need to be defined. For example, "To clearly express the position and direction described in this utility model, the operator of the instrument is used as a reference, the end closer to the operator is the proximal end, and the end farther from the operator is the distal end." Or, the paper can be used as a reference. Of course, if the positional relationship between the two is defined by mutual reference in the subsequent description, then this definition is not required.

[0024] An electric operating mechanism 100, such as Figures 1-2 As shown, the electric operating mechanism 100, applied to circuit breaker 200, includes an electric operating housing 101. Inside the electric operating housing 101, there is a handle 201, a drive mechanism 1021, an indicator, and a micro switch 105. The drive mechanism 1021 can drive the handle 201 to rotate. The handle 201 is used to realize the opening and closing of the circuit breaker 200. To realize the opening or closing, the handle 201 can be driven to rotate by external force or by the drive mechanism 1021. The indicator includes a synchronous part 103 and a toggle part 104, which are fixedly connected as a single unit. The synchronous part 103 is connected to the handle 201 and can rotate synchronously with the handle 201. The toggle part 104 can rotate synchronously with the synchronous part 103, and the toggle part 104 and the synchronous part 103 are not coaxial. The micro switch 105 is used to indicate the working state of the circuit breaker 200. The micro switch 105 is located on the movement path of the toggle part 104. When the circuit breaker 200 is closed, the toggle part 104 rotates to push the micro switch 105 to close. When the circuit breaker 200 is open or tripped, the toggle part 104 rotates away from the micro switch 105, and the micro switch 105 is disconnected.

[0025] In one embodiment of this utility model, a first tooth segment 2011 is provided on the handle 201, the teeth of the first tooth segment 2011 being arranged in an arc shape, and a second tooth segment 1031 is provided on the moving part 103, the first tooth segment 2011 being able to mesh with the second tooth segment 1031. Specifically, the moving part 103 is a gear with teeth partially present, that is, the moving part 103 includes a base circle and a second tooth segment 1031 circumferentially disposed on the base circle, the teeth of the second tooth segment 1031 being arranged in an arc shape, and during the rotation of the handle 201, the first tooth segment 2011 and the second tooth segment 1031 are always meshed.

[0026] In one embodiment of this utility model, the toggle part 104 is disposed away from the second tooth segment 1031, so that the linkage between the toggle part 104 and the micro switch 105 inside the electric operating housing 101 can not interfere with the operation of other components.

[0027] In one embodiment of this utility model, the actuating part 104 is a crank arm. The crank arm structure is well-suited for space-constrained situations, allowing for precise control of the travel. Specifically, the crank arm is arc-shaped or bent at an obtuse angle, extending away from the micro switch 105. Therefore, in a non-contact state, a sufficient safe distance can be maintained between the crank arm and the micro switch 105, preventing accidental triggering. All corners of the crank arm are rounded, allowing for gradual contact between the crank arm and the lever of the micro switch 105 during rotation. This mitigates the impact force at the moment of contact, preventing damage to the lever of the micro switch 105 and avoiding signal jitter caused by excessive instantaneous force, thus ensuring the stability of the on / off signal.

[0028] As an embodiment of this utility model, a gear reduction mechanism 1022 is also provided inside the electric operating housing 101. The gear reduction mechanism 1022 is connected to the drive mechanism 1021 and the handle 201. The gear reduction mechanism 1022 is used to adjust the output force of the drive mechanism 1021 and transmit it to the handle 201. The actuating element can be set on a rotating shaft of the gear reduction mechanism 1022 to save parts and save internal space of the electric operating mechanism 100.

[0029] As one embodiment of this utility model, such as Figure 2As shown, the electric operating mechanism 100 further includes an indicating circuit, a PCB board 106, and a terminal block 107. A micro switch 105 is mounted on the PCB board 106 and connected to it. The PCB board 106 can transmit the on / off signal of the micro switch 105 to the indicating circuit via the terminal block 107. The indicating circuit includes a switching switch S, a tripping indicator circuit TC, and a closing indicator circuit CC. Based on the on / off signal of the micro switch 105, the switching switch S can be switched to either the tripping indicator circuit TC or the closing indicator circuit CC. That is, when the micro switch 105 is open, the switching switch S connects to the tripping indicator circuit TC; when the micro switch 105 is closed, the switching switch S connects to the closing indicator circuit CC. Furthermore, a tripping indicator device is provided in the tripping indicator circuit TC, and a closing indicator device is provided in the closing indicator circuit CC.

[0030] In one embodiment of this utility model, the terminal block 107 is integrated on the side wall of the electric operating mechanism 100. The terminal block 107 includes a common interface 1071, a tripping interface 1072, and a closing interface 1073. The common interface 1071 is connected to the moving contact of the PCB board 106 and the changeover switch S via wires, thereby enabling the PCB board 106 to transmit the on / off signal of the micro switch 105 to the changeover switch S. The tripping interface 1072 is connected to the normally closed contact of the changeover switch S via wires, and the closing terminal block is connected to the normally open contact of the changeover switch S via wires. Therefore, the tripping indication circuit TC is a normally closed circuit, and the closing indication circuit CC is a normally open circuit.

[0031] As an embodiment of this utility model, a circuit breaker control module is also provided on the electric operating mechanism 100. The circuit breaker control module is integrated on the side wall of the electric operating mechanism 100. The circuit breaker control module includes a controller, a circuit breaker command input interface 1081 and a circuit breaker command input interface 1082. The circuit breaker command input interface 1081 and the circuit breaker command input interface 1082 are externally connected to the controller. A circuit breaker command is input to the circuit breaker command input interface 1081 or a circuit breaker command is input to the circuit breaker command input interface 1082 from the outside. The controller can control the start and stop of the drive mechanism 1021 according to the command of the circuit breaker command input interface 1081 or the circuit breaker command input interface 1082.

[0032] This utility model also provides a circuit breaker 200, including a snap fastener 202, a circuit breaker 200 body, and the electric operating mechanism 100 described above. The circuit breaker 200 body and the electric operating mechanism 100 are fixedly connected by the snap fastener 202. A handle sleeve 109 is provided inside the electric operating mechanism 100, and the handle 201 is disposed inside the handle sleeve 109. The drive mechanism 1021 can drive the handle sleeve 109 to rotate, and the handle sleeve 109 can drive the handle 201 to rotate.

[0033] The working principle of this utility model is as follows:

[0034] When the circuit breaker 200 is in automatic mode, an external closing command is input into the closing command input interface 1082. The closing command input interface 1082 transmits the closing command to the controller. The controller controls the drive mechanism 1021 to operate in the forward direction. The output force of the drive mechanism 1021 drives the handle sleeve 109 to rotate through the gear reduction mechanism 1022. The handle sleeve 109 drives the handle 201 to rotate in the forward direction to the closing position, so that the circuit breaker 200 is in the closed state. During this process, the handle 201 synchronously drives the moving part 103 to rotate in the forward direction through gear meshing. The toggle part 104 rotates accordingly and presses down the toggle on the micro switch 105, causing the micro switch 105 to close and the internal circuit to be connected. This is transmitted to the switching switch S through the PCB board 106. The switching switch S switches and connects the closing indicator circuit CC, and the closing indicator device located in the closing indicator circuit CC operates.

[0035] When the circuit breaker 200 is in automatic mode, an external tripping command is input into the tripping command input interface 1081. The tripping command input interface 1081 transmits the tripping command to the controller. The controller controls the drive mechanism 1021 to rotate in reverse. The output force of the drive mechanism 1021 drives the handle sleeve 109 to rotate through the gear reduction mechanism 1022. The handle sleeve 109 drives the handle 201 to rotate in reverse to the tripping position, so that the circuit breaker 200 is in the tripping state. Or, when the circuit breaker 200 trips due to a fault, during this process, the handle 201 drives the moving part 103 to rotate in reverse through gear meshing. The toggle part 104 rotates away from the micro switch 105, so that the micro switch 105 is disconnected and the internal circuit is disconnected. At this time, the switching switch S connects the tripping indicator circuit TC, and the tripping indicator device located in the tripping indicator circuit TC operates.

[0036] When the circuit breaker 200 is in manual mode, the handle 201 is manually pushed to the closed position. The handle 201 drives the moving part 103 to rotate in the forward direction through tooth meshing. The toggle part 104 rotates accordingly and presses down the toggle on the micro switch 105, causing the micro switch 105 to close and the internal circuit to be connected. The signal is transmitted to the terminal group 107 through the PCB board 106, and the status information "circuit breaker 200 is closed" is converted into an electrical signal output.

[0037] When the circuit breaker 200 is in manual mode, the handle 201 is manually pushed to the open position. Or, when the circuit breaker 200 trips due to a fault, the handle 201 drives the moving part 103 to rotate in the opposite direction through tooth engagement. The toggle part 104 rotates away from the micro switch 105, causing the micro switch 105 to open and the internal circuit to be disconnected. The status information of "circuit breaker 200 not closed" is converted into an electrical signal output.

[0038] The electric operating mechanism 100 and the circuit breaker 200 therein provided by this utility model optimize the internal space layout of the electric operating mechanism 100. The indicator with a toggle part 104 that meshes with the handle 201 and rotates is used instead of the traditional auxiliary accessories, saving space of the traditional auxiliary accessories and avoiding space waste. There is no need to produce separate parts, which reduces material, processing and labor costs. At the same time, the indicator circuit and the opening and closing control module are integrated into the electric operating mechanism 100. The integrated design eliminates the step of adding an additional OF module, which optimizes the production and assembly process and cost.

[0039] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0040] The detailed descriptions listed above are merely specific descriptions of feasible implementation methods of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementation methods or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

Claims

1. An electrically operated mechanism, applied to a circuit breaker (200), characterized in that: The electric operating mechanism (100) includes an electric operating housing (101), within which are disposed a handle (201), a drive mechanism (1021), an indicator, and a micro switch (105). The drive mechanism (1021) can drive the handle (201) to rotate. The handle (201) is used to open and close the circuit breaker (200). The indicator includes a synchronous part (103) and a toggle part (104). The synchronous part (103) is connected to the handle and can synchronize with the handle. The toggle part (104) can rotate synchronously with the co-moving part (103). The micro switch (105) is used to indicate the working status of the circuit breaker (200). The micro switch (105) is located on the movement path of the toggle part (104). When the circuit breaker (200) is closed, the toggle part (104) pushes the micro switch (105) to close. When the circuit breaker (200) is open or tripped, the toggle part (104) moves away from the micro switch (105), and the micro switch (105) is disconnected.

2. The electric operating mechanism according to claim 1, characterized in that: A first tooth segment (2011) is provided on the handle (201), the teeth on the first tooth segment (2011) are arranged in an arc shape, and a second tooth segment (1031) is provided on the moving part (103), the first tooth segment (2011) can mesh with the second tooth segment (1031).

3. The electric operating mechanism according to claim 2, characterized in that: The actuating part (104) is positioned away from the second tooth segment (1031).

4. The electric operating mechanism according to claim 3, characterized in that: The actuating part (104) is a crank arm, which is arc-shaped or bent at an obtuse angle, and extends away from the micro switch (105).

5. The electric operating mechanism according to claim 4, characterized in that: The electric control housing (101) is also provided with a gear reduction mechanism (1022), which is connected to the drive mechanism (1021) and the handle (201). The gear reduction mechanism (1022) is used to adjust the output force of the drive mechanism (1021) and transmit it to the handle (201). The actuating part (104) can be provided on a rotating shaft of the gear reduction mechanism (1022).

6. The electric operating mechanism according to claim 1, characterized in that: The electric operating mechanism (100) also includes an indicator circuit, a PCB board (106), and a terminal block (107). The micro switch (105) is connected to the PCB board (106). The PCB board (106) can transmit the on / off signal of the micro switch (105) to the indicator circuit through the terminal block (107). The indicator circuit includes a switching switch S, a tripping indicator circuit TC, and a closing indicator circuit CC. According to the on / off signal of the micro switch (105), the switching switch S can be switched to the tripping indicator circuit TC or the closing indicator circuit CC. When the micro switch (105) is open, the switching switch S is connected to the tripping indicator circuit TC. When the micro switch (105) is closed, the switching switch S is connected to the closing indicator circuit CC.

7. The electric operating mechanism according to claim 6, characterized in that: The terminal block assembly (107) includes a common interface (1071), a tripping interface (1072), and a closing interface (1073). The common interface (1071) is connected to the moving contact of the switch S via wires. The tripping interface (1072) is connected to the normally closed contact of the switch S via wires. The closing interface (1073) is connected to the normally open contact of the switch S via wires.

8. The electric operating mechanism according to claim 6, characterized in that: A tripping indicator is provided in the tripping indicator circuit TC, and a closing indicator is provided in the closing indicator circuit CC.

9. The electric operating mechanism according to claim 6, characterized in that: A circuit breaker control module is also provided on the electric operating mechanism (100). The circuit breaker control module is integrated on the side wall of the electric operating mechanism (100). The circuit breaker control module includes a controller, a circuit breaker command input interface (1081), and a circuit breaker command input interface (1082). The circuit breaker command input interface (1081) and the circuit breaker command input interface (1082) are externally connected to the controller. The controller can control the start and stop of the drive mechanism (1021) according to the command of the circuit breaker command input interface (1081) or the circuit breaker command input interface (1082).

10. A circuit breaker, characterized in that: The circuit breaker (200) body is fixedly connected to the electric operating mechanism (100) according to any one of claims 1 to 9. A handle sleeve (109) is provided in the electric operating mechanism (100). The handle (201) is disposed in the handle sleeve (109). The driving mechanism (1021) can drive the handle sleeve (109) to rotate. The handle sleeve (109) can drive the handle (201) to rotate.

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