Mechanical anti-misoperation locking mechanism and circuit breaker

Abstract

This utility model relates to the field of circuit breakers, providing a mechanical interlocking mechanism and circuit breaker to prevent misoperation. The mechanical interlocking mechanism includes a frame, a ground lock, and a control unit. A protective cover is provided on the frame, forming a protective space between the protective cover and one side plate of the frame. The control unit is located within this protective space. A switch is installed on the power supply line of the control unit, and a linkage rod for opening or closing the switch is provided between the switch and the protective cover. The control unit can be wirelessly controlled via an external terminal to perform grounding or tripping actions. When the manual operation terminal of the control unit is effectively blocked by the protective cover, it prevents on-site operators from operating it. When on-site operators need to perform manual operation, they must first open the protective cover, then move the linkage rod to disconnect the switch, cutting off the power to the control unit. This prevents remote operation from being performed by external personnel, ensuring the safety of on-site operators and improving operational safety and reliability.

Description

Technical Field

[0001] This utility model relates to the field of circuit breakers, specifically to a mechanical interlocking mechanism and circuit breaker for preventing misoperation. Background Technology

[0002] A circuit breaker is a switching device capable of closing, carrying, and interrupting current under normal circuit conditions, and capable of closing, carrying, and interrupting current under abnormal circuit conditions within a specified time. Circuit breakers are classified into high-voltage circuit breakers and low-voltage circuit breakers according to their application.

[0003] When using circuit breakers, they must be grounded before operation to ensure safety. However, existing circuit breakers are designed with remote operation mechanisms, which can lead to situations where remote operators and on-site operators perform the same operations, posing a safety hazard to on-site operators. Utility Model Content

[0004] The purpose of this utility model is to provide a mechanical interlocking mechanism and circuit breaker to prevent misoperation, aiming to improve the safety hazards of existing circuit breakers with remote operation capabilities for on-site operators.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a mechanical interlocking mechanism for preventing misoperation, comprising a frame, a ground lock component, and a control unit for remotely controlling the ground lock component to ground or trip, wherein the control unit is disposed within the frame.

[0006] The frame is provided with a protective cover that is hinged to the shaft, and a protective space is formed between the protective cover and one side plate of the frame. The manual operation end of the control unit is located in the protective space. A switch is provided on the power supply line of the control unit, and a linkage rod for opening or closing the switch is provided between the switch and the protective cover.

[0007] Preferably, a top abutment protrusion is provided on one side of the hinge shaft of the protective cover, and the linkage rod is abutted between the control button of the switch and the top abutment protrusion. The control button of the switch is provided with an elastic force that abuts towards the top abutment protrusion.

[0008] Preferably, the frame is provided with a slide rail and a sliding plate slidably disposed on the slide rail, the sliding plate being disposed between the manual operation end and the protective cover, and the control unit is provided with a drive plate for driving the sliding plate.

[0009] Preferably, a locking part is provided on one end of the sliding plate, and a connecting member that is aligned with or separated from the locking part is provided in the protective space.

[0010] Preferably, a return spring is provided between the protective cover and the frame.

[0011] Preferably, the control unit includes an independently configured controller, a power unit wirelessly connected to the controller, and a drive rod connected between the power unit and the ground lock.

[0012] Preferably, the driving plate is disposed on the driving rod, and the sliding plate is provided with a pressing plate that moves against the driving plate.

[0013] Preferably, the drive rod is provided with a linkage ring that drives the ground lock component to move in conjunction.

[0014] A circuit breaker is also provided, including the aforementioned mechanical interlocking mechanism to prevent misoperation.

[0015] By adopting the above technical solution, this utility model has the following advantages compared with the prior art:

[0016] 1. The anti-misoperation mechanical interlocking mechanism of this utility model can be wirelessly controlled via an external terminal using a control unit to perform grounding or tripping actions. When the manual operation terminal of the control unit is effectively blocked by the protective cover, it can prevent on-site operators from operating it. When on-site operators need to perform manual operation, they must first open the protective cover, then move the linkage rod to move the disconnect switch, cutting off the power to the control unit, so that external operation cannot perform remote operation, ensuring the operational safety of on-site operators and improving the safety and reliability of operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the mechanical locking mechanism for preventing misoperation as described in this utility model;

[0018] Figure 2 This is a partial view of the mechanical locking mechanism for preventing misoperation described in this utility model;

[0019] Figure 3 This is a partial schematic diagram of the anti-misoperation mechanical locking mechanism of the present invention located at the position of the protective cover;

[0020] Figure 4 This is a partial schematic diagram of the anti-misoperation mechanical interlocking mechanism of the present invention in the switch position.

[0021] Explanation of reference numerals in the attached figures:

[0022] 10. Frame; 101. Protective cover; 102. Slide rail; 103. Sliding plate; 104. Connecting parts; 105. Return spring;

[0023] 1011. Protective space; 1012. Top abutment protrusion;

[0024] 1031. Locking part; 1032. Top pressure plate;

[0025] 20. Floor lock components;

[0026] 30. Control unit; 301. Switch; 302. Linkage rod; 303. Drive plate; 304. Drive rod; 305. Controller;

[0027] 3041, Linkage Ring. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0029] Additionally, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" are all based on the orientation or positional relationship shown in the accompanying drawings. They are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element of this utility model must have a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] When an element is referred to as being "fixed to," "set on," or "contained on" another element, it can be directly on or indirectly on that other element. When an element is referred to as being "connected to," it can be directly connected to or indirectly connected to that other element.

[0031] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] Example 1

[0033] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, this embodiment provides a mechanical interlocking mechanism to prevent misoperation, including a frame 10, a ground lock 20, and a control unit 30 for remotely controlling the ground lock 20 to ground or trip. The control unit 30 is located inside the frame 10. A protective cover 101 is provided on the frame 10 and is hinged to the shaft. A protective space 1011 is formed between the protective cover 101 and one side plate of the frame 10. The manual operation end of the control unit 30 is located inside the protective space 1011. A switch 301 is provided on the power supply line of the control unit 30. A linkage rod 302 for opening or closing the switch 301 is provided between the switch 301 and the protective cover 101.

[0034] Specifically, the control unit 30 can be wirelessly controlled via an external terminal, such as a smartphone or tablet, to achieve remote operation. In this way, the control unit 30 drives the ground lock 20 to perform grounding or tripping actions. At this time, the manual operation end of the control unit 30 is effectively blocked by the protective cover 101, preventing on-site personnel from operating it. When on-site personnel need to perform manual operation, they must first open the protective cover 101, then move the linkage rod 302 to move the disconnect switch 301, cutting off the power to the control unit 30. This prevents external operation from performing remote operation, ensuring the safety of on-site personnel and improving the safety and reliability of the operation.

[0035] Furthermore, when the protective cover 101 is closed, the linkage rod 302 automatically resets, the switch 301 closes, the control unit 30 is powered back, the external terminal can resend commands, and the control unit 30 returns to normal operation, ensuring operational continuity. However, at this time, the manual operation end of the control unit 30 is blocked by the protective cover 101, which can prevent on-site operators from operating it, prevent accidental contact, and improve safety.

[0036] like Figure 4 As shown, in this embodiment, a top protrusion 1012 is provided on one side of the hinge shaft of the protective cover 101, and the linkage rod 302 is abutted between the control button of the switch 301 and the top protrusion 1012. The control button of the switch 301 is provided with an elastic force that abuts towards the top protrusion 1012.

[0037] Specifically, switch 301 can be a contact switch 301 with a resilient button. When the protective cover 101 is closed, the linkage rod 302 abuts against the resilient button, and at the same time, the abutting protrusion 1012 tightly abuts against the linkage rod 302, ensuring that switch 301 remains in the closed state; conversely, when the protective cover 101 is opened, the linkage rod 302 shifts, the resilient button resets, switch 301 opens, cutting off the power to the control unit 30 and ensuring the safety of on-site operators.

[0038] like Figure 4As shown, in this embodiment, the frame 10 is provided with a slide rail 102 and a slide plate 103 slidably disposed on the slide rail 102. The slide plate 103 is disposed between the manual operation end and the protective cover 101. The control unit 30 is provided with a drive plate 303 that drives the slide plate 103.

[0039] In use, it can be driven forward and backward. For example, the sliding plate 103 can be pushed by the drive plate 303 to expose the manual operation end of the control unit 30, allowing the operator to perform manual operation. The design of the sliding plate 103 not only increases the flexibility of operation but also further enhances safety protection. Not only is it necessary to open the protective cover 101, but also to move the sliding plate 103. This double protection avoids accidental contact, ensuring a more rigorous and reliable operation process and improving overall safety performance.

[0040] Furthermore, such as Figure 3 As shown, in this embodiment, a locking part 1031 is provided on one end of the sliding plate 103, and a connecting member 104 is provided in the protective space 1011 to be aligned with or separated from the locking part 1031. During operation, the locking part 1031 and the connecting member 104 can be locked together by the lock head, thereby fixing the sliding plate 103 and further improving safety. In this way, opening the protective cover 101 disconnects the control unit 30, and then unlocking the lock head allows the sliding plate 103 to slide, exposing the manual operation end of the control unit 30 so that the ground lock 20 can be manually driven to ground, ensuring that the operation steps are strictly and orderly, effectively preventing misoperation, and ensuring the safety of on-site personnel.

[0041] like Figure 2 As shown, in this embodiment, a return spring 105 is provided between the protective cover 101 and the frame 10. This provides spring force to ensure that the protective cover 101 can automatically return to its original position when closed, forming a good closed state and preventing accidental opening. At the same time, the spring force design further enhances the protective effect of the protective cover 101, improving the overall safety performance and ensuring a more rigorous and reliable operation process.

[0042] like Figure 1 As shown, in this embodiment, the control unit 30 includes an independently configured controller 305, a power unit wirelessly connected to the controller 305, and a drive rod 304 connected between the power unit and the ground lock 20. Specifically, the controller 305 can be a remote control or a mobile phone, which can remotely control the power unit to rotate the drive rod 304 via wireless signals, thereby driving the ground lock 20 to perform grounding or tripping operations, realizing dual remote and on-site control. When on-site operation is required, the remote operation will be disconnected, improving the convenience and safety of operation.

[0043] like Figure 3As shown, in this embodiment, the driving plate 303 is disposed on the driving rod 304, and the sliding plate 103 is provided with a pressing plate 1032 that moves against the driving plate 303. For example, the driving plate 303 can be annular with a barb structure, while the pressing plate 1032 is a protruding plate structure that can engage with the driving plate 303, thereby driving the sliding plate 103 to move. This achieves the purpose of being driven by the driving rod 304, and ensures that when the control unit 30 is operated, the sliding plate 103 is located in front of the manual operation end to block it, forming a mechanical structural guarantee and improving safety.

[0044] like Figure 4 As shown, in this embodiment, the drive rod 304 is provided with a linkage ring 3041 that drives the ground lock 20 to move together. In this way, the ground lock 20 can be driven by the drive rod 304, ensuring the stability and accuracy of the ground lock 20 during operation and forming a remote control effect.

[0045] Example 2

[0046] This embodiment provides a circuit breaker including a mechanical interlocking mechanism to prevent misoperation as described in Embodiment 1. Thus, before operating the circuit breaker, the grounding operation can be completed through the mechanical interlocking mechanism, preventing simultaneous operation by remote and on-site personnel and ensuring the safety of on-site operators.

[0047] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A misoperation prevention mechanical interlock mechanism characterized by comprising: It includes a frame, a ground lock, and a control unit that remotely controls the ground lock to ground or trip, with the control unit located inside the frame. The frame is provided with a protective cover that is hinged to the shaft, and a protective space is formed between the protective cover and one side plate of the frame. The manual operation end of the control unit is located in the protective space. A switch is installed on the power supply line of the control unit, and a linkage rod for opening or closing the switch is provided between the switch and the protective cover.

2. The misoperation prevention mechanical lockout mechanism according to claim 1, characterized by: A top-abutting protrusion is provided on one side of the hinge shaft of the protective cover. The linkage rod is positioned between the control button of the switch and the top-abutting protrusion. The control button of the switch is provided with an elastic force that abuts towards the top-abutting protrusion.

3. The misoperation prevention mechanical lockout mechanism according to claim 1, characterized by: The frame is provided with a slide rail and a sliding plate slidably mounted on the slide rail. The sliding plate is located between the manual operation end and the protective cover. The control unit is provided with a drive plate that drives the sliding plate.

4. The misoperation prevention mechanical lockout mechanism according to claim 3, characterized by: A locking part is provided on one end of the sliding plate, and a connecting part that is aligned with or separated from the locking part is provided in the protective space.

5. The misoperation prevention mechanical lockout mechanism according to claim 4, characterized by: A return spring is provided between the protective cover and the frame.

6. The misoperation prevention mechanical lockout mechanism according to claim 3, characterized by: The control unit includes an independently configured controller, a power unit wirelessly connected to the controller, and a drive rod connected between the power unit and the ground lock.

7. The misoperation prevention mechanical lockout mechanism according to claim 6, characterized by: The driving plate is disposed on the driving rod, and the sliding plate is provided with a pressing plate that moves against the driving plate.

8. The misoperation prevention mechanical lockout mechanism according to claim 6, characterized by: The drive rod is equipped with a linkage ring that drives the ground lock component to move in conjunction.

9. A circuit breaker characterized by, Includes the mechanical locking mechanism for preventing misoperation as described in any one of claims 1 to 8.

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