Molded case circuit breaker convenient to overhaul

Abstract

The utility model discloses a molded case circuit breaker convenient to overhaul. The molded case circuit breaker comprises an upper cover plate and a molded case circuit breaker main body, a molded case circuit breaker body is arranged at the bottom end of the upper cover plate, heat dissipation structures are arranged on the two sides of the upper cover plate, a switch is arranged at the top end of the upper cover plate, and a disassembly and assembly structure is arranged in the upper cover plate. The disassembly and assembly structure comprises a grip. According to the utility model, through the cooperative use of the grip, the clamping block and the circular groove, when the upper cover plate and the molded case circuit breaker main body are installed, the clamping block is inserted into the circular groove through the moving groove and then is rotated towards one side, so that the clamping block is transversely fixed in the clamping block, and when the clamping block and the grip are used in a cooperative manner, the clamping block is fixed in the circular groove; and when the molded case circuit breaker main body needs to be overhauled, the clamping block is reversed, and when the clamping block is rotated to be capable of being pulled out from the interior of the moving groove, the clamping block is stopped, and at the moment, the clamping block can be taken out and the upper cover plate can be opened only by pulling the clamping block upwards, so that the molded case circuit breaker main body is more convenient to overhaul.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic case circuit breakers, and particularly relates to a plastic case circuit breaker convenient for maintenance. Background Art

[0002] A plastic case circuit breaker, also known as a molded case circuit breaker, has all its parts sealed in a plastic housing. Its housing is made of plastic insulators for isolating conductors from each other and from the grounded metal parts. According to different usage scenarios and functions, plastic case circuit breakers can be divided into various types, such as ordinary type, adjustable type, power type, and sectional plastic case circuit breakers. However, there are still some problems with traditional plastic case circuit breakers during use.

[0003] Traditional plastic case circuit breakers are installed by screws during installation. This results in the need for special tools to remove the screws when maintaining the plastic case circuit breaker. Once the tools are damaged or lost, the plastic case circuit breaker cannot be disassembled and repaired. Therefore, a plastic case circuit breaker convenient for maintenance is needed to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a plastic case circuit breaker convenient for maintenance to solve the defect that the existing plastic case circuit breaker cannot be disassembled and maintained without special tools.

[0005] To solve the above technical problems, the utility model provides the following technical solution: A plastic case circuit breaker convenient for maintenance, including an upper cover plate and a plastic case circuit breaker body; the plastic case circuit breaker body is arranged at the bottom end of the upper cover plate, heat dissipation structures are arranged on both sides of the upper cover plate, a switch is arranged at the top end of the upper cover plate, and a disassembly and assembly structure is arranged inside the upper cover plate; the disassembly and assembly structure includes a handle, a clamping block, a circular groove, a moving groove, a connecting rod, and a rotating groove, and the moving groove is opened inside both sides of the upper cover plate.

[0006] Preferably, a rotating groove is arranged at the middle position of the rotating groove, the circular groove is opened inside both sides of the plastic case circuit breaker body, a clamping block is arranged inside the circular groove, a connecting rod is arranged at the top end of the clamping block, and a handle is arranged at the top end of the connecting rod.

[0007] Preferably, there are two groups of clamping blocks, and the two groups of clamping blocks are symmetrically distributed inside the plastic case circuit breaker body.

[0008] Preferably, the inner diameter of the rotating groove is larger than the outer diameter of the connecting rod, and the rotating groove and the connecting rod form a rotating connection.

[0009] Preferably, the heat dissipation structure includes a mounting base, a mounting groove, a mounting block, a groove, a filter screen frame, an air inlet, and an air outlet. The air inlet is opened on one side of the upper cover plate, and the air outlet is opened on the other side of the upper cover plate. Mounting bases are provided at both ends of the air inlet, and a mounting groove is opened inside the mounting base. A mounting block is arranged inside the mounting groove, and a filter screen frame is arranged at the middle position of the mounting block. A groove is opened at the top of the front end of the filter screen frame.

[0010] Preferably, the cross-sectional area of the mounting groove in a top view is larger than that of the mounting block, and a clamping structure is formed between the mounting groove and the mounting block.

[0011] Preferably, there are two groups of the mounting bases, and the two groups of mounting bases are symmetrically distributed at both ends of the air outlet.

[0012] An easy-to-maintain plastic case circuit breaker provided by the present utility model has the following advantages:

[0013] Through the combined use of a handle, a clamping block, and a circular groove, when installing the upper cover plate and the plastic case circuit breaker body, the clamping block can be inserted into the circular groove through a moving groove, and then rotated to one side to horizontally fix the clamping block inside the circular groove. At this time, the clamping block and the handle are used in combination to fix the upper cover plate and the plastic case circuit breaker body. When it is necessary to maintain the plastic case circuit breaker body, reverse the clamping block. When the clamping block rotates to the point where it can be withdrawn from the moving groove, stop rotating. At this time, only need to pull up to take out the clamping block and open the upper cover plate, making it more convenient for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a top view structural schematic diagram of the present utility model;

[0015] Figure 2 is a bottom view structural schematic diagram of the present utility model;

[0016] Figure 3 is a rear view sectional structural schematic diagram of the present utility model;

[0017] Figure 4 is a front view sectional structural schematic diagram of the disassembly and assembly structure of the present utility model;

[0018] Figure 5 is a top view structural schematic diagram of the disassembly and assembly structure of the present utility model;

[0019] Figure 6 is a side view structural schematic diagram of the heat dissipation structure of the present utility model.

[0020] In the figure: 1. Upper cover plate; 2. Molded case circuit breaker body; 3. Heat dissipation structure; 301. Mounting seat; 302. Mounting groove; 303. Mounting block; 304. Groove; 305. Filter screen frame; 306. Air inlet; 307. Air outlet; 4. Disassembly and assembly structure; 401. Handle; 402. Block; 403. Round groove; 404. Moving groove; 405. Connecting rod; 406. Rotating groove; 5. Switch. Detailed implementation mode

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] The embodiment of the present invention provides a molded case circuit breaker convenient for maintenance, as Figures 1-6 shown, a molded case circuit breaker convenient for maintenance includes an upper cover plate 1 and a molded case circuit breaker body 2; the molded case circuit breaker body 2 is arranged at the bottom end of the upper cover plate 1, heat dissipation structures 3 are arranged on both sides of the upper cover plate 1, a switch 5 is arranged at the top end of the upper cover plate 1, and a disassembly and assembly structure 4 is arranged inside the upper cover plate 1.

[0023] In a further preferred embodiment of the present invention, as Figures 1-6 shown: the disassembly and assembly structure 4 includes a handle 401, a block 402, a round groove 403, a moving groove 404, a connecting rod 405 and a rotating groove 406. The moving groove 404 is opened inside both sides of the upper cover plate 1, a rotating groove 406 is arranged at the middle position of the rotating groove 406, round grooves 403 are opened inside both sides of the molded case circuit breaker body 2, blocks 402 are arranged inside the round grooves 403, a connecting rod 405 is arranged at the top end of the block 402, a handle 401 is arranged at the top end of the connecting rod 405. There are two groups of blocks 402, and the two groups of blocks 402 are symmetrically distributed inside the molded case circuit breaker body 2. The inner diameter of the rotating groove 406 is larger than the outer diameter of the connecting rod 405, and a rotating connection is formed between the rotating groove 406 and the connecting rod 405.

[0024] Specifically, in this embodiment: when installing the upper cover plate 1 and the molded case circuit breaker body 2, the block 402 at the bottom end of the connecting rod 405 is aligned with the movable groove 404, and then inserted into the inside of the circular groove 403. After the block 402 is inserted into the inside of the circular groove 403, it is rotated to one side so that the block 402 is horizontally fixed inside the circular groove 403. At this time, the block 402 and the handle 401 are used together to fix the upper cover plate 1 and the molded case circuit breaker body 2, making it more convenient to install. The use of multiple groups of card blocks 402 can achieve better results in the installation and fixing of the upper cover 1 and the molded case circuit breaker body 2. When the molded case circuit breaker body 2 needs to be repaired, the card block 402 is turned upside down. When the card block 402 is rotated to the point where it can be pulled out from the inside of the movable groove 404, it stops rotating. At this time, you only need to hold the handle 401 and pull it upward to take out the card block 402 and open the upper cover 1, so that the upper cover 1 can be opened without special tools during maintenance, making it more convenient during maintenance.

[0025] In a further preferred embodiment of the present invention, Figures 1-6 As shown: the heat dissipation structure 3 includes a mounting seat 301, a mounting groove 302, a mounting block 303, a groove 304, a filter rack 305, an air inlet 306 and an air outlet 307. The air inlet 306 is opened on one side of the upper cover plate 1, and the air outlet 307 is opened on the other side of the upper cover plate 1. The mounting seats 301 are arranged at both ends of the air inlet 306. The mounting seat 301 is provided with a mounting groove 302 inside, and the mounting groove 302 is provided with a mounting block 303 inside. The filter rack 305 is arranged at the middle position of the mounting block 303. The top of the front end of the filter rack 305 is provided with a groove 304. The top cross-sectional area of the mounting groove 302 is larger than the top cross-sectional area of the mounting block 303. A clamping structure is formed between the mounting groove 302 and the mounting block 303. Two groups of mounting seats 301 are provided, and the two groups of mounting seats 301 are symmetrically distributed at both ends of the air outlet 307.

[0026] Specifically, in this embodiment, when the molded case circuit breaker body 2 is used, the mounting block 303 is inserted into the interior of the mounting groove 302, so that the filter frame 305 is installed on one side of the air inlet 306, so that dust will not enter the interior of the molded case circuit breaker body 2 during heat dissipation, thereby completing the filtering work, and through the coordinated use of the air inlet 306 and the air outlet 307, air can flow inside the molded case circuit breaker body 2 to achieve air convection, so that the heat dissipation is faster, thereby completing the heat dissipation work.

[0027] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A molded case circuit breaker convenient for maintenance, comprising an upper cover plate (1) and a molded case circuit breaker main body (2); It is characterized in that: The molded case circuit breaker main body (2) is arranged at the bottom end of the upper cover plate (1), heat dissipation structures (3) are arranged on both sides of the upper cover plate (1), a switch (5) is arranged at the top end of the upper cover plate (1), and a disassembly and assembly structure (4) is arranged inside the upper cover plate (1); The disassembly and assembly structure (4) includes a handle (401), a clamping block (402), a circular groove (403), a moving groove (404), a connecting rod (405) and a rotating groove (406), and the moving groove (404) is opened inside both sides of the upper cover plate (1).

2. The molded case circuit breaker according to claim 1, which is convenient for maintenance, is characterized in that: A rotating groove (406) is arranged at the middle position of the rotating groove (406), the circular groove (403) is opened inside both sides of the molded case circuit breaker main body (2), a clamping block (402) is arranged inside the circular groove (403), a connecting rod (405) is arranged at the top end of the clamping block (402), and a handle (401) is arranged at the top end of the connecting rod (405).

3. The molded case circuit breaker convenient for maintenance according to claim 2, wherein: There are two groups of the clamping blocks (402), and the two groups of clamping blocks (402) are symmetrically distributed inside the molded case circuit breaker main body (2).

4. The molded case circuit breaker convenient for maintenance according to claim 1, characterized in that: The inner diameter of the rotating groove (406) is larger than the outer diameter of the connecting rod (405), and a rotating connection is formed between the rotating groove (406) and the connecting rod (405).

5. The molded case circuit breaker convenient for maintenance according to claim 4, characterized in that: The heat dissipation structure (3) includes a mounting seat (301), a mounting groove (302), a mounting block (303), a groove (304), a filter screen frame (305), an air inlet (306) and an air outlet (307), the air inlet (306) is opened on one side of the upper cover plate (1), the air outlet (307) is opened on the other side of the upper cover plate (1), mounting seats (301) are arranged at both ends of the air inlet (306), a mounting groove (302) is opened inside the mounting seat (301), a mounting block (303) is arranged inside the mounting groove (302), a filter screen frame (305) is arranged at the middle position of the mounting block (303), and a groove (304) is opened at the top of the front end of the filter screen frame (305).

6. The molded case circuit breaker convenient for maintenance according to claim 5, wherein: The top view cross-sectional area of the mounting groove (302) is larger than the top view cross-sectional area of the mounting block (303), and a clamping structure is formed between the mounting groove (302) and the mounting block (303).

7. An MCCB facilitating maintenance according to claim 5, wherein: There are two groups of the mounting seats (301), and the two groups of mounting seats (301) are symmetrically distributed at both ends of the air outlet (307).

Images