Circuit breaker plug-in board rear connecting device with anti-loosening function

Abstract

This utility model discloses a circuit breaker insert-type rear-mounted connection device with anti-loosening function, relating to the field of power equipment technology. The device includes an insert-type U-shaped mounting plate, on which a circuit breaker body is slidably mounted. It also includes a slot formed in the U-shaped mounting plate, on which a clamping mechanism for holding the circuit breaker body is detachably mounted. The clamping mechanism includes a movable fixed plate, on which a hollow sleeve is fixedly mounted. A sliding rod is rotatably mounted within the hollow sleeve, and a movable plate is fixedly mounted on the sliding rod. A clamping spring is fixedly mounted on the movable plate, and a fixing block is fixedly mounted at the end of the clamping spring away from the movable plate, with the fixing block fixedly connected to the fixed plate. This circuit breaker insert-type rear-mounted connection device with anti-loosening function facilitates stable installation of the circuit breaker, thereby improving the stability of the circuit breaker during use.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, specifically to a circuit breaker insert-type rear connection device with anti-loosening function. Background Technology

[0002] In modern electrical systems, circuit breakers, as key electrical protection devices, bear the important responsibility of protecting against overload, short circuit, and other faults. The stability and reliability of their performance are directly related to the safe operation of the entire electrical system. With the continuous growth of electricity demand and the increasing complexity of electrical equipment application scenarios, higher requirements are being placed on the ease of installation, connection reliability, and maintenance convenience of circuit breakers.

[0003] Insert-in rear-panel connectors offer numerous significant advantages. From an installation perspective, they greatly simplify the circuit breaker installation process. Traditional circuit breaker connection methods often require cumbersome wiring operations, which are not only time-consuming and labor-intensive but also demand a high level of professional skill from installers. In contrast, insert-in rear-panel connectors utilize a modular design, allowing the circuit breaker to achieve electrical connection to the circuit board with a simple insertion action, significantly reducing installation time and improving installation efficiency.

[0004] However, existing plug-in rear connection devices lack anti-loosening functions. During long-term operation, they are affected by various factors such as vibration, temperature changes and external impacts. The contact pressure between the circuit breaker and the connection device may gradually decrease. This decrease in contact pressure will lead to an increase in contact resistance, which in turn will cause local heating and low safety.

[0005] Therefore, in order to solve the above problems, the applicant needs to design a circuit breaker plug-in plate connection device with anti-loosening function. Utility Model Content

[0006] The purpose of this invention is to provide a circuit breaker insert-type rear connection device with anti-loosening function to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a circuit breaker insert-type rear connection device with anti-loosening function, including an insert-type U-shaped mounting plate, wherein a circuit breaker body is slidably mounted on the insert-type U-shaped mounting plate. It also includes: a slot formed in the insert-type U-shaped mounting plate, and a clamping mechanism for clamping the circuit breaker body is detachably installed in the slot. The clamping mechanism includes a movable fixed plate, and a hollow sleeve is fixedly installed on the fixed plate. A slide rod is rotatably installed inside the hollow sleeve, and a movable plate is fixedly installed on the slide rod. A clamping spring is fixedly installed on the movable plate, and a fixing block is fixedly installed at the end of the clamping spring away from the movable plate, and the fixing block is fixedly connected to the fixed plate.

[0008] Furthermore, a stabilizing seat is rotatably mounted on the slide rod, and the stabilizing seat is fixedly connected to the fixing plate.

[0009] Through the above structural design, by adding a stabilizing seat and rotating it with the slide rod, the axial stability of the slide rod during movement is achieved.

[0010] Furthermore, a threaded sleeve is fixedly provided on the fixing plate, and a threaded pin is provided on the inner thread of the threaded sleeve.

[0011] Through the above structural design, by tightening the threaded pins, an additional preload can be applied to the clamping mechanism, thereby actively compensating for the fatigue deformation of the clamping spring caused by long-term use and maintaining a constant clamping force.

[0012] Furthermore, a rubber gasket is fitted on the outer side of the threaded nail, and the outer diameter of the rubber gasket is greater than the width of the slot.

[0013] Through the above structural design, the elastic properties of the rubber gasket can absorb external vibration energy, reduce the impact of vibration on the locking state of the threaded nail, and prevent the threaded connection from loosening due to vibration.

[0014] Furthermore, the clamping end face of the movable plate is provided with anti-slip teeth, and the contact surface of the anti-slip teeth matches the side wall of the circuit breaker body.

[0015] Through the above structural design, the geometric features of the anti-slip teeth form a multi-point engagement effect with the contact surface of the circuit breaker body sidewall, which significantly improves the static friction coefficient of the contact interface.

[0016] Furthermore, the inner wall of the insert-type U-shaped mounting plate is symmetrically provided with guide ridges, and the two sides of the circuit breaker body are respectively provided with guide grooves that slide in cooperation with the guide ridges.

[0017] Through the above structural design, the sliding fit between the guide ridge and the guide groove enables precise guiding and installation of the circuit breaker body.

[0018] Compared with the prior art, the beneficial effects of this utility model are: the circuit breaker insert-type rear connection device with anti-loosening function facilitates the secure installation of the circuit breaker, thereby improving the stability of the circuit breaker during use. The specific details are as follows: This device employs a multi-layered anti-loosening mechanism, utilizing axial positioning of the stabilizing seat, active pre-tightening of the threaded pins, vibration suppression of the rubber gaskets, micro-engagement of the anti-slip teeth, and precise positioning of the guide ridges. In use, the circuit breaker body is mounted on the insert-type U-shaped mounting plate. Then, the fixing plate is attached to the insert-type U-shaped mounting plate, and external force is applied to press the movable plate. The movable plate compresses the clamping spring, generating elastic force. Next, the fixing plate is slid along the slot until it contacts the circuit breaker body, releasing the external force restriction. The movable plate, under the elastic force of the clamping spring, clamps the circuit breaker body. Finally, the threaded pins and threaded sleeves are tightened, thus securing the clamping mechanism. This clamping mechanism enhances the stability of the circuit breaker body during use, thereby improving safety. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the clamping mechanism of this utility model; Figure 3 This utility model Figure 2 Enlarged structural diagram at point A; Figure 4 This is a schematic diagram showing the disassembled structure of the threaded nail, threaded sleeve, and rubber gasket of this utility model.

[0020] In the diagram: 1. Insert-type U-shaped mounting plate; 2. Clamping mechanism; 10. Circuit breaker body; 11. Slot; 12. Guide ridge; 20. Fixing plate; 21. Hollow sleeve; 22. Slide rod; 23. Movable plate; 24. Stabilizing seat; 25. Clamping spring; 26. Fixing block; 27. Threaded sleeve; 28. Threaded nail; 29. ​​Rubber pad; 231. Anti-slip serrations. Detailed Implementation

[0021] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1-4As shown, the circuit breaker insert-type rear connection device with anti-loosening function of this utility model includes an insert-type U-shaped mounting plate 1, and a circuit breaker body 10 is slidably disposed on the insert-type U-shaped mounting plate 1. It also includes a slot 11 opened in the insert-type U-shaped mounting plate 1, and a clamping mechanism 2 for clamping the circuit breaker body 10 is detachably installed on the slot 11. The clamping mechanism 2 includes a movable fixed plate 20, and a hollow sleeve 21 is fixedly disposed on the fixed plate 20. A slide rod 22 is rotatably disposed inside the hollow sleeve 21, and a movable plate 23 is fixedly disposed on the slide rod 22. A clamping spring 25 is fixedly disposed on the movable plate 23. A fixing block 26 is fixedly disposed at the end of the clamping spring 25 away from the movable plate 23, and the fixing block 26 is fixedly connected to the fixed plate 20.

[0023] A stabilizing seat 24 is rotatably mounted on the slide rod 22, and the stabilizing seat 24 is fixedly connected to the fixed plate 20. By adding the stabilizing seat 24 and the rotational cooperation of the slide rod 22, the axial stability of the slide rod 22 during the movement is achieved. The stabilizing seat 24, as the rotational support point of the slide rod 22, can effectively limit the radial displacement of the slide rod 22, ensure the accuracy of the movement trajectory of the movable plate 23 during the clamping process, thereby improving the overall rigidity of the clamping mechanism 2, avoiding the clamping position displacement caused by mechanical vibration or external force interference, and further enhancing the durability and reliability of the clamping force.

[0024] A threaded sleeve 27 is fixedly installed on the fixed plate 20, and a threaded pin 28 is provided in the internal thread of the threaded sleeve 27. The matching design of the threaded sleeve 27 and the threaded pin 28 provides an adjustable fixing method. By tightening the threaded pin 28, an additional preload can be applied to the clamping mechanism 2, thereby actively compensating for the fatigue deformation of the clamping spring 25 caused by long-term use, maintaining a constant clamping force, and facilitating the disassembly and maintenance of the clamping mechanism 2. The tightness can be calibrated by simple thread adjustment, which significantly improves the maintenance efficiency and adaptability of the device.

[0025] A rubber gasket 29 is fitted on the outside of the threaded nail 28, and the outer diameter of the rubber gasket 29 is larger than the width of the slot 11. The elastic properties of the rubber gasket 29 can absorb external vibration energy, reduce the impact of vibration on the locking state of the threaded nail 28, and prevent the threaded connection from loosening due to vibration. At the same time, the design of the outer diameter of the rubber gasket 29 being larger than the width of the slot 11 forms a mechanical limit, avoiding structural damage caused by excessive screwing of the threaded nail 28. Meanwhile, the friction damping effect enhances the fixing stability of the clamping mechanism 2 in the slot 11, and improves the anti-interference ability of the device.

[0026] The clamping end face of the movable plate 23 is provided with anti-slip teeth 231, and the contact surface of the anti-slip teeth 231 matches the side wall of the circuit breaker body 10. The geometric features of the anti-slip teeth 231 and the contact surface of the side wall of the circuit breaker body 10 form a multi-point interlocking effect, which significantly improves the static friction coefficient of the contact interface. The micro-interlocking effect of the teeth can effectively resist lateral slippage. Especially when vibration or temperature changes cause small displacement of the contact surface, the teeth structure can maintain the uniform distribution of clamping force through deformation compensation, thereby reducing contact resistance fluctuations and preventing the risk of overheating caused by poor local contact.

[0027] The inner wall of the insert-type U-shaped mounting plate 1 is symmetrically provided with guide protrusions 12, and the two sides of the circuit breaker body 10 are respectively provided with guide grooves that slide with the guide protrusions 12. The sliding cooperation between the guide protrusions 12 and the guide grooves realizes the precise guidance and installation of the circuit breaker body 10, avoiding angular deviation during the insertion process. At the same time, the symmetrically distributed guide structure ensures that the circuit breaker body 10 is subjected to balanced force, reducing unilateral wear caused by installation misalignment.

[0028] Working principle: When using the circuit breaker insert-type plate rear connection device with anti-loosening function, the circuit breaker body 10 is installed on the insert-type U-shaped mounting plate 1. Then, the fixing plate 20 is attached to the insert-type U-shaped mounting plate 1 and the movable plate 23 is pressed by external force. The movable plate 23 will squeeze the clamping spring 25, and the clamping spring 25 will generate elastic force. Then, the fixing plate 20 is slid along the slot 11 until it touches the circuit breaker body 10, releasing the external force restriction. The movable plate 23 will clamp the circuit breaker body 10 under the action of the clamping spring 25. Finally, the threaded nail 28 and the threaded sleeve 27 are tightened to securely install the clamping mechanism 2. The clamping mechanism 2 will improve the stability of the circuit breaker body 10 during use, thereby improving safety.

[0029] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A circuit breaker insert-type rear connection device with anti-loosening function, including an insert-type U-shaped mounting plate (1), and a circuit breaker body (10) is slidably disposed on the insert-type U-shaped mounting plate (1). Its features are, Also includes: A slot (11) is provided on the insert-type U-shaped mounting plate (1), and a clamping mechanism (2) for clamping the circuit breaker body (10) is detachably installed on the slot (11). The clamping mechanism (2) includes a movable fixed plate (20), and a hollow sleeve (21) is fixedly provided on the fixed plate (20). A slide rod (22) is rotatably provided inside the hollow sleeve (21), and a movable plate (23) is fixedly provided on the slide rod (22). A clamping spring (25) is fixedly provided on the movable plate (23). A fixing block (26) is fixedly provided at the end of the clamping spring (25) away from the movable plate (23), and the fixing block (26) is fixedly connected to the fixed plate (20).

2. The circuit breaker insert-type rear connection device with anti-loosening function according to claim 1, characterized in that: A stabilizing seat (24) is rotatably mounted on the slide rod (22), and the stabilizing seat (24) is fixedly connected to the fixing plate (20).

3. The circuit breaker insert-type rear connection device with anti-loosening function according to claim 2, characterized in that: A threaded sleeve (27) is fixedly provided on the fixed plate (20), and a threaded nail (28) is provided in the threaded sleeve (27).

4. The circuit breaker insert-type rear connection device with anti-loosening function according to claim 3, characterized in that: The threaded nail (28) is fitted with a rubber gasket (29) on its outer side, and the outer diameter of the rubber gasket (29) is greater than the width of the slot (11).

5. The circuit breaker insert-type rear connection device with anti-loosening function according to claim 1, characterized in that: The clamping end face of the movable plate (23) is provided with anti-slip teeth (231), and the contact surface of the anti-slip teeth (231) matches the side wall of the circuit breaker body (10).

6. The circuit breaker insert-type rear connection device with anti-loosening function according to claim 1, characterized in that: The inner wall of the insert-type U-shaped mounting plate (1) is symmetrically provided with guide protrusions (12), and the two sides of the circuit breaker body (10) are provided with guide grooves that slide with the guide protrusions (12).

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