Quick opening and closing buffer structure of circuit breaker
By introducing a buffer structure of springs and buffer plates into the circuit breaker, the impact problem during opening and closing is solved, the opening and closing forces are buffered, the service life of the circuit breaker is extended, and the safety is improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2026-03-24
AI Technical Summary
The existing circuit breakers have a large closing force and a fast closing speed when closing, which causes the impact to be transmitted to the internal structure, increasing the probability of component damage and posing a high risk.
A fast opening and closing buffer structure for circuit breakers was designed. Through the cooperation of spring and buffer plate, the buffer plate contacts the arc-shaped surface of the opening and closing circuit. When the circuit is closed, it rotates a certain distance and then strikes the buffer plate, causing the buffer plate to fall and compress the spring to deform. The buffering force is adjustable, which increases the service life.
It effectively buffers the force of opening and closing, extends the service life of the circuit breaker, improves safety, and increases the durability of components.
Smart Images
Figure CN224036316U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to circuit breaker technical field especially relates to a circuit breaker quick opening and closing buffer structure. BACKGROUND
[0002] Circuit breaker refers to the switch device that can close, carry and open the current under normal loop condition and can close, carry and open the current under abnormal loop condition within the prescribed time. Circuit breaker can be used to distribute electric energy, start asynchronous motor infrequently, and protect power supply line and motor, etc. When serious overloading or short circuit and under voltage fault occurs, it can automatically cut off the circuit, and its function is equivalent to the combination of fuse type switch and over under voltage relay.
[0003] In the prior art, the opening and closing of the circuit breaker has large closing force and fast speed, and the impact of the shutter will be transmitted to the internal structure of the circuit breaker when closing, increasing the probability of damage to the internal elements of the circuit breaker, resulting in subsequent inability to use and high danger. UTILITY MODEL CONTENT
[0004] The utility model discloses a circuit breaker quick opening and closing buffer structure, which solves the problems of large closing force, fast speed, impact transmission to the internal structure of the circuit breaker when closing, increased probability of damage to the internal elements of the circuit breaker, subsequent inability to use and high danger in the prior art.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a circuit breaker quick opening and closing buffer structure, comprising a circuit breaker limiting frame, both sides of the circuit breaker limiting frame are fixedly connected with side connecting sleeves, one side of the lower end of the circuit breaker limiting frame is fixedly connected with a bottom support plate, the lower end of the bottom support plate is fixedly connected with a threaded sleeve, the lower end of the threaded sleeve is threadedly connected with an adjusting bottom block, the inside of the threaded sleeve is provided with a bottom connecting block, the upper end of the bottom connecting block is fixedly connected with a connecting rod, the upper end of the connecting rod is fixedly connected with a buffer plate, a spring is arranged between the bottom connecting block and the adjusting bottom block, the bottom connecting block is a circular truncated cone, in this way, the caliber of the lower end of the bottom connecting block is smaller than that of the upper end, which can make the falling of the bottom connecting block more smooth, and when rising, it is easy to be clamped in the slot of the thread, thereby delaying the rising speed of the connecting rod, in this way, the force is buffered by cooperating with the spring.
[0006] Preferably, a one-way slot is formed in the lower end of the adjusting bottom block.
[0007] Preferably, a third reinforcing rib is fixedly connected between the lower end of the buffer plate and the outer surface of the connecting rod.
[0008] Preferably, the middle part of the threaded sleeve is fixedly connected with an end limit ring.
[0009] Preferably, the two sides of the other end of the circuit breaker limiting frame are fixedly connected with extension plates, and the lower end of the circuit breaker limiting frame is fixedly connected with a second reinforcing rib between the outer surface of the threaded sleeve.
[0010] Preferably, the middle part of the lower end of the circuit breaker limiting frame is fixedly connected with a first reinforcing rib, and the lower end of the adjusting bottom block is provided with a T-shaped slot.
[0011] Compared with the prior art, the circuit breaker quick opening and closing buffer structure has the advantages and positive effects that:
[0012] 1. In the utility model, the buffer plate is set as a plane and is in contact with the arc surface of the circuit breaker opening and closing, so that when the opening and closing is closed, the circuit breaker is disconnected after rotating for a distance, and then the buffer plate is hit by the plate to make the buffer plate fall and compress the spring to deform the spring and buffer the force of the opening and closing, thereby increasing the service life of the circuit breaker.
[0013] 2. In the utility model, the adjusting bottom block is threadedly connected with the threaded sleeve, so that the deformation stroke of the spring can be adjusted to adjust the buffering force, the spring and the bottom block are convenient to replace, the practicability is higher, the first reinforcing rib and the second reinforcing rib are arranged to increase the strength of the circuit breaker limiting frame and the threaded sleeve, avoid damage and increase the service life. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 A three-dimensional structure diagram of the circuit breaker quick opening and closing buffer structure is provided for the utility model Figure 1 ;
[0015] Figure 2 A three-dimensional structure diagram of the circuit breaker quick opening and closing buffer structure is provided for the utility model Figure 2 ;
[0016] Figure 3 An explosion view of the circuit breaker quick opening and closing buffer structure is provided for the utility model.
[0017] Figure 4 A three-dimensional structure diagram of the adjusting bottom block in the circuit breaker quick opening and closing buffer structure is provided for the utility model.
[0018] Legend: 1. Circuit breaker limiting frame; 2. Extension plate; 3. Bottom support plate; 4. Side connecting sleeve; 5. First reinforcing rib; 6. Threaded sleeve; 7. Second reinforcing rib; 8. End limiting ring; 9. Connecting rod; 10. Third reinforcing rib; 11. Buffer plate; 12. Bottom connecting block; 13. Spring; 14. Adjusting bottom block; 15. Slotted groove. Detailed Implementation
[0019] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0021] Example 1: As Figure 1 - Figure 4 As shown, this utility model provides a circuit breaker fast opening and closing buffer structure, including a circuit breaker limiting frame 1. Side connecting sleeves 4 are fixedly connected to both sides of the circuit breaker limiting frame 1. A bottom support plate 3 is fixedly connected to one side of the lower end of the circuit breaker limiting frame 1. A threaded sleeve 6 is fixedly connected to the middle of the lower end of the bottom support plate 3. An adjusting bottom block 14 is threadedly connected to the lower end of the threaded sleeve 6. A bottom connecting block 12 is provided inside the threaded sleeve 6. A connecting rod 9 is fixedly connected to the upper end of the bottom connecting block 12. A buffer plate 11 is fixedly connected to the upper end of the connecting rod 9. A spring 13 is provided between the bottom connecting block 12 and the adjusting bottom block 14. The bottom connecting block 12 is a frustum. In this way, the diameter of the lower end of the bottom connecting block 12 is smaller than the diameter of the upper end, which makes the descent of the bottom connecting block 12 smoother. When rising, it is easy to get stuck in the groove of the thread, which slows down the rising speed of the connecting rod 9. In this way, in conjunction with the spring 13, the force is buffered.
[0022] The specific settings and functions of this embodiment are described in detail below. Through the setting of spring 13 and buffer plate 11, buffer plate 11 is set as a plane and contacts the arc-shaped surface of the circuit breaker for opening and closing. In this way, when the circuit breaker is closed, it can rotate a certain distance to open the circuit breaker. Then, the moving plate strikes the buffer plate 11, causing the buffer plate 11 to fall and compress the spring 13, causing the spring 13 to deform and buffer the force of opening, closing and closing, thereby increasing the service life of the circuit breaker.
[0023] Example 2: Figure 1 - Figure 4As shown, the lower end of the adjusting bottom block 14 is provided with a T-shaped slot 15, the lower end of the buffer plate 11 is fixedly connected with the outer surface of the connecting rod 9 through the third reinforcing rib 10, the inner surface of the threaded sleeve 6 is fixedly connected with the end limit ring 8, the other end of the circuit breaker limiting frame 1 is fixedly connected with the extension plate 2, the lower end of the circuit breaker limiting frame 1 is fixedly connected with the outer surface of the threaded sleeve 6 through the second reinforcing rib 7, and the lower end of the circuit breaker limiting frame 1 is fixedly connected with the first reinforcing rib 5.
[0024] The adjusting bottom block 14 is threadedly connected with the threaded sleeve 6, the deformation stroke of the spring 13 can be adjusted to adjust the buffering degree, the spring 13 and the bottom connecting block 12 can be conveniently replaced, the practicability is higher, the first reinforcing rib 5 and the second reinforcing rib 7 are arranged to increase the strength of the circuit breaker limiting frame 1 and the threaded sleeve 6, damage is avoided, and the service life is increased.
[0025] The working principle and the use method of the device are as follows: in use, the circuit breaker limiting frame 1 is sleeved on the outer side of the circuit breaker, the side connecting sleeve 4 is connected with the circuit breaker through a bolt, the fixing of the circuit breaker limiting frame 1 and the circuit breaker is completed, the buffer plate 11 is in contact with the annular surface of the opening and closing at this time, when the circuit breaker is closed, the gate is first rotated to disconnect the circuit, then the gate is hit by the buffer plate 11, the buffer plate 11 falls and presses the spring 13, when the spring 13 rebounds, the bottom connecting block 12 is in contact with the threaded part to reduce the rebounding speed of the bottom connecting block 12, thereby buffering, and the connecting rod 9 is slowly reset.
[0026] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms, any skilled person in the art can modify or change the above disclosed technical content to obtain equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made on the basis of the technical essence of the present application to the above embodiments still belongs to the protection scope of the present application.
Claims
1. A circuit breaker quick opening and closing buffer structure, characterized in that: The utility model relates to a circuit breaker limiting frame, including the circuit breaker limiting frame (1), both sides of circuit breaker limiting frame (1) are fixedly connected with side connecting sleeve (4), one side of circuit breaker limiting frame (1) lower extreme is fixedly connected with bottom support plate (3), the lower extreme middle part of bottom support plate (3) is fixedly connected with threaded sleeve (6), the lower extreme of threaded sleeve (6) is threadedly connected with the adjusting bottom block (14), the inside of threaded sleeve (6) is provided with bottom joint block (12), the upper end of bottom joint block (12) is fixedly connected with connecting rod (9), the upper end of connecting rod (9) is fixedly connected with buffer plate (11), and the spring (13) is arranged between bottom joint block (12) and adjusting bottom block (14).
2. The quick opening and closing buffer structure of a circuit breaker according to claim 1, characterized in that: The lower end of the adjusting bottom block (14) is provided with a T-shaped slot (15).
3. The quick opening and closing buffer structure of a circuit breaker according to claim 1, characterized in that: The lower end of the buffer plate (11) is fixedly connected with the third reinforcing rib (10) on both sides.
4. The quick opening and closing buffer structure of a circuit breaker according to claim 1, characterized in that: The middle part of the threaded sleeve (6) is fixedly connected with the end limit ring (8).
5. The quick opening and closing buffer structure of a circuit breaker according to claim 1, characterized in that: The other end of the circuit breaker limiting frame (1) is fixedly connected with the extension plate (2) on both sides.
6. The quick opening and closing buffer structure of a circuit breaker according to claim 1, characterized in that: The lower end of the circuit breaker limiting frame (1) is fixedly connected with the first reinforcing rib (5) on both sides. The lower end of the adjusting bottom block (14) is provided with a T-shaped slot (15).