Terminal cover with arc extinction structure

Abstract

The utility model relates to the technical field of circuit breakers, and discloses a terminal cover with an arc extinction structure, which comprises a terminal cover body, a plurality of first ventilation openings are uniformly formed in the upper part of the terminal cover body, second ventilation openings are uniformly formed in the rear side of the terminal cover body, and a mounting frame is slidably connected to the front side in the terminal cover body. Limiting grooves are formed in the left side and the right side of the inner wall of the terminal cover body, a first ventilation opening is formed in the front side of the mounting frame, limiting blocks are fixedly connected to the left side and the right side of the mounting frame, threaded blocks are fixedly connected to the left side and the right side of the lower portion of the rear side of the mounting frame, and bolts are in threaded connection to the left side and the right side of the bottom of the terminal cover body. And a mounting assembly is arranged in the mounting frame and is used for mounting the arc extinguishing structure. According to the utility model, through cooperation of the clamping plates, the mounting columns, the springs, the arc extinguishing grid sheets, the mounting racks, the threaded blocks, the bolts and other structures, the arc extinguishing structure of the terminal cover is convenient to mount and dismount, and the practicability of the terminal cover is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a terminal cover with an arc extinguishing structure. Background Art

[0002] When a molded case circuit breaker interrupts current, the arc erodes metal components such as the silver point, contacts, and arc-extinguishing grids, generating metal particles inside the circuit breaker. These metal particles, along with the superheated gases, are ejected out of the circuit breaker, resulting in metal particles flying around the outside of the circuit breaker. To prevent the ejected metal particles from piercing the metal busbars inside the combiner cabinet and causing external short circuits, terminal shields are typically installed on the terminal side of the circuit breaker to block the spread of metal particles.

[0003] In the prior art, a terminal cover with an arc extinguishing structure is provided with a plurality of vent holes to facilitate the release of high-pressure gas generated when interrupting a large current. However, the arc extinguishing structure is often not convenient for installation and disassembly, and the practicality of the terminal cover is average. Utility Model Content

[0004] In order to make up for the above deficiencies, the present invention provides a terminal cover with an arc extinguishing structure, aiming to improve the problem that the arc extinguishing structure of the terminal cover in the prior art is often inconvenient to install and disassemble, and the practicality of the terminal cover is generally poor.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a terminal cover with an arc extinguishing structure, comprising a terminal cover body, a plurality of first ventilation openings evenly provided on the upper part of the terminal cover body, a second ventilation opening evenly provided on the rear side of the terminal cover body, a mounting bracket slidably connected to the front side of the interior of the terminal cover body, limiting grooves are provided on the left and right sides of the inner wall of the terminal cover body, a first air vent is provided on the front side of the mounting bracket, limiting blocks are fixedly connected to the left and right sides of the mounting bracket, threaded blocks are fixedly connected to the left and right sides of the lower rear side of the mounting bracket, bolts are threadedly connected to the left and right sides of the bottom of the terminal cover body, and an installation component is provided inside the mounting bracket for installing the arc extinguishing structure.

[0006] As a further description of the above technical solution:

[0007] The mounting assembly includes a mounting plate, which is fixedly connected to the left and right sides of the bottom of the mounting frame. Mounting columns are evenly fixedly connected around the opposite side of the mounting plate. Springs are provided on the outside of the mounting columns. Clamps are slidably connected to the outside of the left and right sides of the middle of the mounting columns. An arc-extinguishing grid is provided at the bottom of the mounting plate, and a plurality of second air vents are evenly opened in the middle of the arc-extinguishing grid.

[0008] As a further description of the above technical solution:

[0009] The terminal cover body is made of polycarbonate, the mounting frame is made of high-strength plastic, the mounting plate is made of fiberglass plastic, the mounting column and the clamping plate are both made of aluminum alloy, and the arc-extinguishing grid is made of high-temperature resistant ceramic.

[0010] As a further description of the above technical solution:

[0011] The limiting block is slidably connected inside the limiting groove.

[0012] As a further description of the above technical solution:

[0013] The threaded block is slidably connected to the inner side of the lower part of the terminal cover body, and the terminal cover body is fixedly connected to the threaded block through bolts.

[0014] As a further description of the above technical solution:

[0015] One end of the spring is fixedly connected to the mounting plate, and the other end of the spring is fixedly connected to the clamping plate.

[0016] As a further description of the above technical solution:

[0017] The arc extinguishing grid is located on the opposite side of the clamping plate.

[0018] The utility model has the following beneficial effects:

[0019] 1. In the utility model, the clamping plate is pushed to slide on the outside of the mounting column to squeeze the spring, and then the arc extinguishing grid is placed on the opposite side of the clamping plate. The clamping plate is loosened to make the spring lose pressure and reset to push the clamping plate to clamp the arc extinguishing grid. Then, the mounting frame is pushed to drive the threaded block to move into the inside of the terminal cover body. Finally, the bolt is rotated to connect the threaded block and the terminal cover body. This realizes the arc extinguishing structure of the terminal cover, which is convenient for installation and disassembly, and improves the practicality of the terminal cover.

[0020] 2. In the present invention, the excellent insulation performance and high temperature resistance of the polycarbonate material enable the terminal cover body to maintain stability in high temperature and high voltage environments, reducing the risk of breakdown. The high-strength plastic material reduces the weight of the mounting frame and provides good insulation protection. The fiberglass plastic ensures the strength of the mounting plate. The aluminum alloy provides good strength and durability for the mounting column and the clamping plate. The high-temperature resistant ceramic material effectively suppresses the generation of arcs and reduces the heat of the arc. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional diagram of the terminal cover with an arc extinguishing structure proposed in the present invention;

[0022] Figure 2 This is a rear view of the terminal cover with arc extinguishing structure proposed by the present invention;

[0023] Figure 3 This is a rear view of the mounting frame structure of the terminal cover with arc extinguishing structure proposed by the present invention.

[0024] Legend:

[0025] 1. Terminal cover body; 2. First vent; 3. Second vent; 4. Mounting frame; 5. Limiting groove; 6. Limiting block; 7. First vent; 8. Bolt; 9. Threaded block; 10. Mounting plate; 11. Mounting column; 12. Spring; 13. Clamping plate; 14. Arc-extinguishing grid; 15. Second vent. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Reference Figure 1-Figure 3 The utility model provides an embodiment of a terminal cover with an arc extinguishing structure, comprising a terminal cover body 1, a plurality of first ventilation openings 2 are evenly opened on the upper part of the terminal cover body 1, a second ventilation opening 3 is evenly opened on the rear side of the terminal cover body 1, a mounting bracket 4 is slidably connected to the front side of the terminal cover body 1, and a limiting groove 5 is opened on the left and right sides of the inner wall of the terminal cover body 1, a first air vent 7 is opened on the front side of the mounting bracket 4, and a limiting block 6 is fixedly connected to the left and right sides of the mounting bracket 4, and the limiting block 6 is slidably connected to the inside of the limiting groove 5, and the left and right sides of the lower rear side of the mounting bracket 4 are fixedly connected to threaded blocks 9, and the left and right sides of the bottom of the terminal cover body 1 are threadedly connected to bolts 8, and the threaded block 9 is slidably connected to the inner side of the lower part of the terminal cover body 1. The cover body 1 is fixedly connected to the threaded block 9 by bolts 8, and a mounting assembly is provided inside the mounting frame 4 for installing the arc extinguishing structure. The mounting assembly includes a mounting plate 10, which is fixedly connected to the left and right sides of the bottom inner portion of the mounting frame 4, and mounting columns 11 are evenly fixedly connected around the opposite side of the mounting plate 10. A spring 12 is provided on the outside of the mounting column 11, and a clamping plate 13 is slidably connected to the outside of the left and right sides of the middle of the mounting column 11. An arc extinguishing grid 14 is provided on the bottom inner portion of the mounting plate 10, and a number of second air vents 15 are evenly opened in the middle of the arc extinguishing grid 14. One end of the spring 12 is fixedly connected to the mounting plate 10, and the other end of the spring 12 is fixedly connected to the clamping plate 13. The arc extinguishing grid 14 is located on the opposite side of the clamping plate 13.

[0028] First, the operator needs to push the clamping plate 13 to make it slide on the outside of the mounting column 11. At this time, the clamping plate 13 will squeeze the spring 12 due to its design, causing the spring 12 to be compressed, releasing a space to facilitate subsequent operations. When the clamping plate 13 is pushed, the operator can easily place the arc extinguishing grid 14 on the opposite side of the clamping plate 13. The arc extinguishing grid 14 is a key component in the arc extinguishing structure, which can effectively absorb and dissipate arc energy and prevent the arc from affecting the surrounding environment. Next, the operator releases the clamping plate 13. At this time, the spring 12 will quickly reset when the external force is lost, pushing the clamping plate 13 back to its initial position. During this process, the clamping plate 13 will firmly clamp the arc extinguishing grid 14 to ensure its stable position inside the terminal cover. Then, The operator pushes the mounting bracket 4 forward. Since the mounting bracket 4 is connected to the clamping plate 13, this action will cause the clamping plate 13 and the arc extinguishing grid 14 to move together. At the same time, the limit block 6 will slide inside the limit groove 5 to ensure the alignment and stability of the entire system. As the mounting bracket 4 moves forward, the threaded block 9 will also be driven and gradually move to the inside of the terminal cover body 1. This design ensures a good connection between the threaded block 9 and the terminal cover body 1, providing conditions for subsequent fixation. Finally, the operator turns the bolt 8 and tightly combines the bolt 8 and the threaded block 9 together through a threaded connection, thereby fixing the entire arc extinguishing structure. The tightening of the bolt 8 ensures the firmness and reliability between the various components, so that the arc extinguishing structure can work safely and stably in high-voltage electrical equipment.

[0029] Reference Figure 1-Figure 3 The terminal cover body 1 is made of polycarbonate, the mounting frame 4 is made of high-strength plastic, the mounting plate 10 is made of glass fiber plastic, the mounting column 11 and the clamping plate 13 are made of aluminum alloy, and the arc extinguishing grid 14 is made of high-temperature resistant ceramic.

[0030] The terminal cover body 1 is made of polycarbonate, which effectively prevents current leakage and reduces the risk of electrical breakdown. In addition, polycarbonate also performs well in high-temperature environments. Its high-temperature resistance allows the terminal cover to remain stable under extreme working conditions and is not prone to deformation or aging. The use of this material ensures that the terminal cover can work effectively in high-temperature and high-voltage environments, improving the safety and reliability of the overall equipment. The mounting frame 4 is made of high-strength plastic. The selection of this material is intended to reduce the overall weight while providing good insulation protection. While having high mechanical strength, the high-strength plastic ensures that it will not break or deform due to load or external impact. This allows the mounting frame 4 to stably fix other components during operation to avoid being affected by material fatigue. Influence system performance. In addition, good insulation properties also provide protection for electrical safety and reduce the risk of short circuit and electric shock. The mounting plate 10 adopts glass fiber reinforced plastic. The application of this material ensures that the mounting plate 10 has sufficient strength and rigidity. In order to provide good strength and durability, the mounting column 11 and the clamping plate 13 are made of aluminum alloy. Aluminum alloy not only has excellent mechanical strength, but also has a low density, so that these components can maintain a lighter weight while ensuring strength. The arc extinguishing grid 14 adopts high-temperature resistant ceramic material. This material has extremely high heat resistance and excellent electrical insulation. Ceramics can effectively suppress the generation of arcs in high temperature environments, reduce the impact of arcs on the surrounding environment, and thus extend the service life of the equipment.

[0031] Working principle: When the arc extinguishing structure of the terminal cover needs to be installed, push the clamping plate 13 so that the clamping plate 13 slides on the outside of the installation column 11 to squeeze the spring 12, and then place the arc extinguishing grid 14 on the opposite side of the clamping plate 13, loosen the clamping plate 13 so that the spring 12 loses pressure and resets to push the clamping plate 13, clamp the arc extinguishing grid 14 through the clamping plate 13, and then push the mounting frame 4 so that the mounting frame 4 drives the limit block 6 to slide inside the limit groove 5, and at the same time drives the threaded block 9 to move to the inside of the terminal cover body 1, and finally turn the bolt 8 so that the bolt 8 connects the threaded block 9 and the terminal cover body 1, thereby realizing the arc extinguishing structure of the terminal cover, which is convenient for installation and disassembly, and improves the practicality of the terminal cover.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A terminal cover with an arc extinguishing structure, comprising a terminal cover body (1), characterized in that: The upper part of the terminal cover body (1) is evenly provided with a plurality of first ventilation openings (2), the rear side of the terminal cover body (1) is evenly provided with a second ventilation opening (3), the front side of the terminal cover body (1) is slidably connected to a mounting frame (4), the left and right sides of the inner wall of the terminal cover body (1) are provided with limiting grooves (5), the front side of the mounting frame (4) is provided with a first air vent (7), the left and right sides of the mounting frame (4) are fixedly connected with limiting blocks (6), the left and right sides of the lower rear side of the mounting frame (4) are fixedly connected with threaded blocks (9), the left and right sides of the bottom of the terminal cover body (1) are threadedly connected with bolts (8), and the mounting frame (4) is provided with a mounting assembly for installing the arc extinguishing structure.

2. The terminal cover with arc extinguishing structure according to claim 1, characterized in that: The mounting assembly comprises a mounting plate (10), the mounting plate (10) being fixedly connected to the left and right sides of the inner bottom of the mounting frame (4), the mounting column (11) being evenly fixedly connected to the four sides of the opposite side of the mounting plate (10), a spring (12) being provided on the outer side of the mounting column (11), a clamping plate (13) being slidably connected to the outer sides of the left and right sides of the middle of the mounting column (11), an arc extinguishing grid (14) being provided on the inner bottom of the mounting plate (10), and a plurality of second air vents (15) being evenly opened in the middle of the arc extinguishing grid (14).

3. The terminal cover with arc extinguishing structure according to claim 2, characterized in that: The terminal cover body (1) is made of polycarbonate, the mounting frame (4) is made of high-strength plastic, the mounting plate (10) is made of fiberglass plastic, the mounting column (11) and the clamping plate (13) are both made of aluminum alloy, and the arc extinguishing grid (14) is made of high-temperature resistant ceramic.

4. The terminal cover with an arc extinguishing structure according to claim 1, wherein: The limiting block (6) is slidably connected inside the limiting groove (5).

5. The terminal cover with arc extinguishing structure according to claim 1, characterized in that: The threaded block (9) is slidably connected to the inner side of the lower portion of the terminal cover body (1), and the terminal cover body (1) is fixedly connected to the threaded block (9) via bolts (8).

6. The terminal cover with arc extinguishing structure according to claim 2, characterized in that: One end of the spring (12) is fixedly connected to the mounting plate (10), and the other end of the spring (12) is fixedly connected to the clamping plate (13).

7. The terminal cover with an arc extinguishing structure according to claim 2, characterized in that: The arc extinguishing grid (14) is located on the opposite side of the clamping plate (13).

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