False connection prevention limiting device for aviation circuit breaker

Abstract

The utility model discloses a wrong connection prevention limiting device for an aviation circuit breaker, which comprises a rotation control part and a limiting clamping part, and is characterized in that the limiting clamping part is used for being clamped on a connecting rod of a circuit breaker to be limited and fixed and comprises two clamping ends capable of rotating relatively; the two clamping ends capable of rotating relatively are fixed to the rotation control part, rotation of the two clamping ends capable of rotating relatively is adjusted through the rotation control part, and when the limiting device is used, the clamping ends are clamped on a connecting rod of a circuit breaker to be limited and fixed, so that a limiting effect on a switch of the circuit breaker is achieved; according to the invention, the circuit breaker which needs to be prevented from being switched on by mistake can be effectively limited even if the circuit breaker needs to be prevented from being switched on by mistake, and the two clamping ends which can relatively rotate are used as structures for limiting the opening and closing of the circuit breaker plate; the circuit breaker is simple in structure and can be effectively prevented from being mistakenly switched on.

Description

Technical Field

[0001] This utility model belongs to the field of aviation manufacturing technology, specifically relating to an anti-misoperation limit device for aviation circuit breakers. Background Technology

[0002] Aircraft circuit breakers are precision switching devices specifically designed for closing, carrying, and safely interrupting current. They play an indispensable role in ensuring the stable and safe operation of aircraft electrical systems. As a key component of onboard circuit protection systems, aircraft circuit breakers can quickly respond to abnormal conditions in the circuit, preventing potential circuit failures by interrupting current, thereby maintaining the normal operation of the entire aircraft electrical system.

[0003] During the aircraft's power-on preparation phase, for non-test systems—those not formally authorized or in an unplanned power-on state—if their corresponding aviation circuit breakers are accidentally activated, unauthorized current will flow into these systems. This misoperation may inadvertently activate various onboard equipment or other critical components, such as the aircraft's door systems. This could cause temporary equipment malfunctions or damage, increasing maintenance costs; or it could lead to loss of control of aircraft systems, abnormal component operation, or even serious personal injury and flight safety accidents, resulting in incalculable loss of life and property, and far-reaching consequences for quality liability.

[0004] Current industry practices for preventing accidental activation of aircraft circuit breakers are relatively rudimentary, primarily relying on visual warning labels attached to the circuit breaker or related circuits. While this method can alert operators to some extent, its effectiveness is limited due to the lack of proactive protection mechanisms, and it cannot fundamentally eliminate accidental activation caused by human negligence or operational errors. Therefore, developing more intelligent and reliable technologies to prevent accidental activation has become a crucial issue that urgently needs to be addressed in improving aviation safety. Utility Model Content

[0005] The purpose of this utility model is to provide a limit device for preventing accidental connection of aircraft circuit breakers, so as to overcome the problem that there is no effective limit method for preventing accidental connection of aircraft circuit breakers in actual production. This utility model ensures that the circuit breaker that needs to be prevented from accidental connection can be effectively limited even if an accidental connection operation occurs, through the limiting effect of the clamping mechanism.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A limit device for preventing accidental connection of an aircraft circuit breaker includes a rotation control unit and a limit clamping unit. The limit clamping unit is used to clamp onto the connecting rod of the circuit breaker to be limited and fixed. The limit clamping unit includes two clamping ends that can rotate relative to each other, and the two clamping ends that can rotate relative to each other are respectively fixed on the rotation control unit.

[0008] Preferably, the limiting clamping part includes two clamping plates, which are arranged opposite to each other and can rotate relative to each other to form an enclosing structure.

[0009] Preferably, the clamping plate adopts an arc-shaped plate structure.

[0010] Preferably, the rotation control unit includes two cross-arranged handles, which are rotatably connected by a connecting shaft. One end of the two cross-arranged handles is the control unit, and the other end of the two cross-arranged handles is used to fix the limiting clamping unit.

[0011] Preferably, a torsion spring is provided on the connecting shaft used to connect the two handles.

[0012] Preferably, the inner sides of the two cross-arranged handles are provided with grooves for limiting the end of the torsion spring.

[0013] Preferably, the handle is fixedly connected to the semi-circular plate, and the connecting shaft of the two cross-arranged handles is perpendicular to the connecting rod axis of the circuit breaker.

[0014] Preferably, both the upper and lower ends of the positioning and clamping part are provided with protruding structures.

[0015] Preferably, the handle and the limiting clamping part are integrally formed.

[0016] Preferably, the maximum opening angle between the two handles is 60°.

[0017] Compared with the prior art, the present invention has the following beneficial technical effects:

[0018] This utility model discloses an anti-misoperation limiting device for aircraft circuit breakers, including a rotation control unit and a limiting clamping unit. The limiting clamping unit is used to clamp onto the connecting rod of the circuit breaker to be limited and fixed. The limiting clamping unit includes two clamping ends that can rotate relative to each other. The two clamping ends that can rotate relative to each other are respectively fixed on the rotation control unit. The rotation of the two clamping ends that can rotate relative to each other is adjusted by the rotation control unit. In use, the clamping ends clamp onto the connecting rod of the circuit breaker to be limited and fixed, thereby limiting the circuit breaker switch and ensuring that the circuit breaker that needs to be prevented from misoperation can be effectively limited even if a misoperation occurs. This application can ensure that the circuit breaker that needs to be prevented from misoperation can be effectively limited even if a misoperation occurs.

[0019] Preferably, the two clamping ends that can rotate relative to each other serve as the structure for limiting the circuit breaker switch. The structure is simple and can effectively prevent the circuit breaker from being accidentally connected.

[0020] In a specific embodiment of this application, the limiting clamping part includes two clamping plates, which are arranged opposite to each other and can rotate relative to each other to form an enclosing structure, thereby forming a support structure for the connecting rod of the circuit breaker. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of a dedicated anti-misoperation limit device for aviation circuit breakers.

[0023] Figure 2 Right side view of the structure of the anti-misoperation limit device for aviation circuit breakers

[0024] The numbers in the diagram are explained as follows: 1. Groove; 2. Connecting shaft; 3. Clamping mechanism; 4. Handle; 5. Torsion spring; 6. Protruding structure; 7. Connecting rod. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0026] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0027] See appendix Figure 1 This utility model provides a limit device for preventing accidental connection of an aircraft circuit breaker, which ensures that the circuit breaker, which needs to be prevented from being accidentally connected, can be effectively limited even if an accidental connection operation occurs. Specifically, it includes a rotation control unit and a limit clamping unit. The limit clamping unit is used to clamp onto the connecting rod 7 of the circuit breaker to be limited and fixed. The limit clamping unit includes two clamping ends that can rotate relative to each other. The two clamping ends that can rotate relative to each other are respectively fixed on the rotation control unit. The rotation of the two clamping ends can be adjusted by the rotation control unit. In use, the clamping ends clamp onto the connecting rod 7 of the circuit breaker to be limited and fixed, which restricts the circuit breaker switch and ensures that the circuit breaker, which needs to be prevented from being accidentally connected, can be effectively limited even if an accidental connection operation occurs.

[0028] In the specific embodiments of this application, the two relatively rotatable clamping end structures are set with different sizes according to the circuit breaker structure of different specifications. The two relatively rotatable clamping ends can match the connecting rod 7 of the circuit breaker to be limited and fixed. Specifically, the two relatively rotatable clamping ends can be fixedly clamped and attached to the surface of the connecting rod 7 of the circuit breaker to be limited and fixed. The two relatively rotatable clamping ends serve as the structure for limiting the circuit breaker switch. The structure is simple and can effectively prevent the circuit breaker from being accidentally connected.

[0029] In a specific embodiment of this application, the limiting clamping part includes two clamping plates, which are arranged opposite to each other and can rotate relative to each other to form an enclosing structure, thereby forming a support structure for the connecting rod of the circuit breaker.

[0030] Example

[0031] like Figure 1As shown, the limiting clamping part includes two semi-circular arc plates. The two semi-circular arc plates are arranged opposite each other and can rotate relative to each other to form an enclosing structure, which clamps on the connecting rod 7 of the circuit breaker to be limited and fixed, thereby forming a limiting structure on the connecting rod 7 of the circuit breaker to be limited and fixed, and can be stably clamped on the outside of the connecting rod 7 of the circuit breaker.

[0032] Specifically, the rotation control unit is used to control the opening and closing of the limiting clamping part. The rotation control unit includes two cross-arranged handles 4, which are rotatably connected by a connecting shaft 2. One end of each cross-arranged handle 4 serves as the control unit, and the other end is used to fix the limiting clamping part. To ensure the stability of the limiting clamping part during clamping and to prevent automatic opening, a torsion spring 5 is provided on the connecting shaft 2 connecting the two handles 4. The torsion spring 5 provides the initial torque and provides rotational force for the reset of the entire device. Furthermore, it can prevent the device from opening automatically. In the initial state of the torsion spring 5, one end of the two handles 4 is spread open, and the two semi-circular plates set at the other end are clamped. When needed, by pressing one end of the two cross-arranged handles 4 as the control part, the two semi-circular plates set at the other end are opened and then placed on the connecting rod 7 of the circuit breaker to be clamped. Then, the two cross-arranged handles 4 as the control part are released, so that the two semi-circular plates are clamped on the outside of the connecting rod 7 of the circuit breaker. The semi-circular plates form a support for the connecting rod 7 of the circuit breaker, preventing it from opening automatically.

[0033] In the specific embodiments of this application, such as Figure 1 As shown, the inner sides of the two cross-arranged handles 4 are provided with grooves 1, which are used to limit the end of the torsion spring 5 and prevent the end of the torsion spring from protruding.

[0034] In another embodiment of this application, the handle 4 is fixedly connected to the semi-circular plate, and the connecting shaft 2 of the two intersecting handles 4 is perpendicular to the axis of the connecting rod 7 of the circuit breaker, as shown. Figure 1 As shown, handle 4 is located at the top to prevent interference between handle 4 and the main structure of the circuit breaker during use. To ensure that the two semi-circular plates can smoothly enter the lower end of the connecting rod 7 when the two cross-shaped handles 4 are open, the opening angle of the two semi-circular plates is set according to the size of the upper end of the connecting rod 7.

[0035] like Figure 2As shown in the specific embodiment of this application, two cross-arranged handles 4 are used, which are rotatably connected by a connecting shaft 2. The ends of the two cross-arranged handles 4 are fixed with limiting clamping parts. A torsion spring is provided on the connecting shaft 2 connecting the two handles 4. Simultaneously, protruding structures 6 are provided at both the upper and lower ends of the limiting clamping parts, using the protruding structures 6 to support the groove at the circuit breaker panel. The two cross-arranged handles are rotatably connected by the connecting shaft. This design makes operation more flexible, allowing users to adjust the handle angle to adapt to different working environments and operational needs. The limiting clamping parts fixed at the ends of the handles can tightly clamp onto the connecting rod of the circuit breaker, ensuring that the circuit breaker will not move or fall off during operation, improving operational stability and safety. The torsion springs provided on the connecting shaft allow the handles to automatically return to their initial position after being released. This design not only facilitates user operation but also improves work efficiency.

[0036] The upper and lower ends of the limiting clamp are equipped with protruding structures that can mate with the grooves on the circuit breaker panel to achieve a stable support effect. This design not only prevents the circuit breaker from shaking or tilting during operation, but also improves the stability and reliability of the entire device.

[0037] This application has a simple structure that can be flexibly opened and closed, clamping onto the connecting rod of an aircraft circuit breaker to restrict its pressing and connection. This application can achieve automatic reset, allowing the device to be reliably installed on the aircraft circuit breaker. Both the upper and lower ends of the positioning clamping part are provided with protruding structures 6, wherein the protrusion at the lower end is used to adapt to the groove on the circuit breaker panel, and the protrusion at the upper end ensures that when the current indicator cap is pressed to the upper surface of the clamping device, it will not accidentally open due to the clamping device tilting because it hits the handle, thus losing its limiting function.

[0038] In a specific embodiment of this application, the handle and the limiting clamping part are integrally molded using resin material and 3D printing technology, which can effectively protect the circuit breaker panel from scratches.

[0039] In use, pinch the handle with two fingers. After the clamping mechanism opens, slide the clamping mechanism onto the top of the circuit breaker indicator cap. Once the clamping mechanism can fully grip the connecting rod, release your fingers and adjust the position of the limiting device so that its handle is on the right side of the circuit breaker. When the limiting device is installed correctly, its clamping mechanism can fully fit against the connecting rod, and the handle is in its initial state, under the action of only the tension of the torsion spring.

[0040] In a specific embodiment of this application, a non-planar structure is adopted, including a rotation control part and a limiting clamping part, such as... Figure 1As shown, the limiting clamping part includes two semi-circular arc plates, which are arranged opposite to each other. The rotation control part includes two cross-arranged handles 4. The connecting shaft 2 of the two cross-arranged handles 4 is perpendicular to the axis of the connecting rod 7 of the circuit breaker. The other end of each cross-arranged handle 4 is integrally formed with a semi-circular arc plate. In the initial state, when the torsion spring is not under force, the opening angle is 120°, and the maximum opening angle between the two handles is 60°.

[0041] This invention, through the limiting effect of the clamping mechanism, ensures that circuit breakers that require protection against accidental connection can be effectively limited. The upper and lower protrusions of the clamping mechanism ensure that the limiting device can accommodate various specifications of circuit breakers and circuit breaker boards. This invention utilizes 3D printing technology and resin raw materials to manufacture the main components, effectively preventing scratches and damage to the metal panel and paint layer.

Claims

1. A limit device for preventing accidental connection in an aircraft circuit breaker, characterized in that, It includes a rotation control unit and a limit clamping unit. The limit clamping unit shown is used to clamp on the connecting rod (7) of the circuit breaker to be limited and fixed. The limit clamping unit includes two clamping ends that can rotate relative to each other. The two clamping ends that can rotate relative to each other are respectively fixed on the rotation control unit.

2. The anti-misoperation limit device for an aircraft circuit breaker according to claim 1, characterized in that, The limiting clamping part includes two clamping plates, which are arranged opposite to each other and can rotate relative to each other to form an enclosing structure.

3. The anti-misoperation limit device for an aircraft circuit breaker according to claim 2, characterized in that, The clamping plate adopts an arc-shaped plate structure.

4. The anti-misoperation limit device for an aircraft circuit breaker according to claim 1, characterized in that, The rotation control unit includes two cross-arranged handles (4), which are rotatably connected by a connecting shaft (2). One end of the two cross-arranged handles (4) is the control unit, and the other end of the two cross-arranged handles (4) is used to fix the limiting clamping unit.

5. The anti-misoperation limit device for an aircraft circuit breaker according to claim 4, characterized in that, A torsion spring (5) is provided on the connecting shaft (2) used to connect the two handles (4).

6. The anti-misoperation limit device for an aircraft circuit breaker according to claim 5, characterized in that, The inner side of the two cross-arranged handles (4) is provided with a groove (1) for limiting the end of the torsion spring (5).

7. The anti-misoperation limit device for an aircraft circuit breaker according to claim 3, characterized in that, The handle (4) is fixedly connected to the semi-circular plate. The connecting shaft (2) of the two cross-arranged handles (4) is perpendicular to the axis of the connecting rod (7) of the circuit breaker.

8. The anti-misoperation limit device for an aircraft circuit breaker according to claim 1, characterized in that, Both the upper and lower ends of the positioning clamping part are provided with protruding structures (6).

9. A limit device for preventing accidental connection of an aircraft circuit breaker according to claim 4, characterized in that, The handle and the limiting clamping part are integrally formed.

10. A limit device for preventing accidental connection of an aircraft circuit breaker according to claim 1, characterized in that, The maximum opening angle between the two handles is 60°.

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