Stable digital circuit breaker

Abstract

The utility model relates to the technical field of digital circuit breakers, and particularly discloses a stable digital circuit breaker, which comprises a circuit breaker bottom shell and a circuit breaker surface shell covering the circuit breaker bottom shell in a sliding manner, the cross section of the circuit breaker surface shell is arranged in a step shape, and cover plates are detachably arranged at two ends of the circuit breaker bottom shell and the circuit breaker surface shell. Two groups of plugging structures are arranged between the cover plates and the circuit breaker bottom shell, an air blowing mechanism is arranged between the two cover plates, a plurality of cooling fins are arranged at the bottom ends of two low-order horizontal sections and the inner walls of vertical sections of the circuit breaker surface shell, and two plugging blocks are arranged on the opposite sides of the two cover plates. Two limiting blocks are arranged on the outer walls of the two vertical sections of the circuit breaker face shell. According to the circuit breaker shell, a screw fastening combination mode is replaced, the disassembly and assembly efficiency is improved, the maintenance efficiency is improved, the heat dissipation speed is improved, the service life of a circuit breaker is prolonged, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of digital circuit breakers, in particular to a stable digital circuit breaker. Background Art

[0002] A digital circuit breaker is an intelligent device based on digital technology. It monitors current in real time through built-in sensors and intelligent control units, and has functions such as automatic monitoring, remote control, and fault diagnosis. The application scenarios of digital circuit breakers are very wide, including but not limited to smart cities, smart communities, smart elderly care, smart medical care, smart agriculture, high-end supermarkets, high-end residences, and industrial Internet applications. In these application scenarios, digital circuit breakers can improve the safety and reliability of the power system, provide users with accurate energy management information, and help users use power resources more scientifically and efficiently.

[0003] Existing digital circuit breakers are mainly composed of a shell and electronic components arranged inside the shell. The shell assembly needs to be assembled with screws, resulting in low maintenance efficiency. Since its heat dissipation method is achieved by heat dissipation holes opened on the side wall of the metal shell, the heat dissipation efficiency is not high enough. After long-term use, the circuit breaker may easily reach a high operating temperature, which will directly affect the service life of the circuit breaker. Utility Model Content

[0004] In order to solve the above problems existing in the prior art, the utility model provides a stable digital circuit breaker, which can overcome the above technical defects.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A stable digital circuit breaker comprises a circuit breaker bottom shell and a circuit breaker face shell slidingly covered on the circuit breaker bottom shell, the cross-section of the circuit breaker face shell being arranged in a stepped shape, and both ends of the circuit breaker bottom shell and the circuit breaker face shell are detachably provided with cover plates, two sets of plug-in structures are arranged between the cover plates and the circuit breaker bottom shell, and a blower mechanism is arranged between the two cover plates, the bottom ends of the two low-step horizontal sections and the inner walls of the vertical sections of the circuit breaker face shell are provided with multiple heat sinks, two facing sides of the two cover plates are provided with two plug-in blocks, and the outer walls of the two vertical sections of the circuit breaker face shell are provided with two limit blocks, the limit blocks are slidably connected to the plug-in blocks, and the bottom ends of the limit blocks are provided with limit structures for locking the plug-in blocks.

[0007] Preferably, the two lower-step bottom ends of the circuit breaker face shell are connected with a plurality of plug-in rods, and the inner walls of the two vertical sections of the circuit breaker bottom shell are provided with a plurality of slide grooves distributed in an array, and the plug-in rods match the adjacent slide grooves. The circuit breaker face shell and the circuit breaker bottom shell form a sliding connection structure through the multiple plug-in rods and the corresponding slide grooves, and cooperate with the detachable cover plates at both ends to improve the disassembly and assembly efficiency of the digital circuit breaker.

[0008] Preferably, the top surface of the circuit breaker housing is provided with a control panel for adjusting, controlling, and displaying load current, load voltage, load power and load working time, and the top surface of the circuit breaker housing is provided with one or more mechanical switches.

[0009] Preferably, the side wall of the circuit breaker bottom shell is provided with a plurality of load wiring holes, power input wiring holes and neutral wire wiring holes, and the low-level top of the circuit breaker face shell is threadedly connected with a plurality of locking screws, and the locking screws are used to lock the wires.

[0010] Preferably, the two facing cover plates are each provided with a convex strip connected end to end, and the circuit breaker bottom shell and the circuit breaker face shell are both slidably connected to the convex strip.

[0011] Preferably, the plug-in structure includes a limit pin, which is fixedly mounted on a side of the cover plate close to the bottom shell of the circuit breaker. Two limit holes are provided at both ends of the bottom shell of the circuit breaker, and the limit pin is slidably mounted in the limit holes.

[0012] Preferably, the blowing mechanism includes a square tube, a fan and a second filter. The square tube passes through and is fixedly installed on the side wall of one of the cover plates. The end of the square tube away from the circuit breaker face shell is flush with the side wall of the cover plate. A first filter is provided in the port of the square tube away from the circuit breaker face shell. The fan is installed on the inner wall of the square tube. A vent is provided on the side wall of the cover plate away from the blowing structure. The second filter is fixedly installed on the vent of the cover plate. The fan draws air outside the circuit breaker into between the circuit breaker face shell and the circuit breaker bottom shell. The first filter and the second filter filter large particles of impurities in the air. In conjunction with the heat sink, the airflow carries the heat in the circuit breaker and flows out from the second filter, thereby improving the heat dissipation speed.

[0013] Preferably, the limiting structure includes a U-shaped block, which is fixedly installed at the bottom end of the limiting block, and a slider is slidably installed between the two sides of the U-shaped block. A limiting rod is provided at the top of the slider, and the limiting rod is penetrated and slidably connected to the limiting block. A through hole matching the limiting rod is provided at the bottom end of the plug-in block, and a spring is installed between the bottom end of the slider and the bottom wall of the U-shaped block, and a shift block is provided on the side of the slider away from the circuit breaker face shell.

[0014] Preferably, convex strips are provided on both sides of the sliding block, and grooves are provided on both sides of the inner wall of the U-shaped block, and the convex strips fit and slide in the grooves.

[0015] The beneficial effects of the utility model are:

[0016] 1. By arranging the installation of the circuit breaker bottom shell and the circuit breaker face shell, the circuit breaker face shell and the circuit breaker bottom shell form a sliding connection structure through multiple plug-in rods and corresponding slide grooves. When the digital circuit breaker needs to be maintained, the dial block is pressed down, the slider slides synchronously in the U-shaped block, the spring is compressed, the limit rod slides out of the through hole of the plug-in block, the cover is pulled out, the locking screw is removed, and the circuit breaker face shell is pulled out, replacing the screw fastening method, improving the disassembly and assembly efficiency and improving the maintenance efficiency.

[0017] 2. By setting up a blower mechanism, during the operation of the digital circuit breaker, when the temperature monitored by the internal temperature module is higher than the set value, the control panel will start the fan to draw air outside the circuit breaker into the space between the circuit breaker cover and the circuit breaker bottom shell. The first filter and the second filter will filter out large particles of impurities in the air. In conjunction with the heat sink, the airflow carries the heat inside the circuit breaker and flows out from the second filter, which improves the heat dissipation speed, extends the service life of the circuit breaker, and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a diagram of the installation structure of the second filter in the present utility model;

[0021] Figure 3 This is a diagram of the installation structure of the heat sink in the utility model;

[0022] Figure 4 This is a diagram of the installation structure of the fan in the present utility model;

[0023] Figure 5 This is an installation structure diagram of the limiting structure in the utility model.

[0024] Description of main component symbols:

[0025] In the figure: 1. Circuit breaker bottom shell; 2. Circuit breaker front shell; 201. Connecting rod; 202. Control panel; 203. Mechanical switch; 204. Locking screw; 3. Cover plate; 4. Raised strip; 5. Limit pin; 6. Limit hole; 7. Square tube; 8. First filter; 9. Fan; 10. Second filter; 11. Heat sink; 12. Connecting block; 13. Limit block; 14. U-shaped block; 15. Slider; 1501. Raised strip; 1502. Groove; 16. Limit rod; 17. Spring; 18. Dial block. DETAILED DESCRIPTION

[0026] To further illustrate the technical means and effects of the present invention in achieving the intended purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, provides a clear and complete description of the specific implementation methods, structures, features, and effects of the present invention. Obviously, the embodiments described are only a portion of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0027] In the description of this application, it should be understood that the orientation or position relationship indicated by "inside" and "outside" is based on the orientation or position described in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, a specific orientation structure and operation, and therefore cannot be understood as a limitation on this application.

[0028] Reference Figure 1-Figure 3, is a stable digital circuit breaker disclosed in the present invention, comprising a circuit breaker bottom shell 1 and a circuit breaker face shell 2 slidingly covered on the circuit breaker bottom shell 1. The cross-section of the circuit breaker face shell 2 is stepped, and a plurality of plug-in rods 201 are connected to the two lower-step bottom ends of the circuit breaker face shell 2. The inner walls of the two vertical sections of the circuit breaker bottom shell 1 are provided with a plurality of slide grooves distributed in an array, and the plug-in rods 201 match the adjacent slide grooves. The circuit breaker face shell 2 is slidably connected to the circuit breaker bottom shell 1 for easy disassembly and assembly. A control panel 202 for adjusting, controlling, and displaying load current, load voltage, load power, and load working time is provided on the top surface of the circuit breaker face shell 2. One or more mechanical switches 203 are provided, and multiple load wiring holes, power input wiring holes and neutral wire wiring holes are provided on the side wall of the circuit breaker bottom shell 1. The low-level top of the circuit breaker face shell 2 is threadedly connected with multiple locking screws 204, which are used to lock the wires. Cover plates 3 are detachably provided at both ends of the circuit breaker bottom shell 1 and the circuit breaker face shell 2. 4 is connected end to end on the opposite sides of the two cover plates 3. The circuit breaker bottom shell 1 and the circuit breaker face shell 2 are both slidably connected to 4. The circuit breaker face shell 2 and the circuit breaker bottom shell 1 form a sliding connection structure through multiple plug-in rods 201 and corresponding slide grooves, which cooperates with the detachable cover plates 3 at both ends to improve the disassembly and assembly efficiency of the digital circuit breaker.

[0029] Reference Figures 1-4 A blower mechanism is provided between the two cover plates 3. The blower mechanism includes a square tube 7, a fan 9 and a second filter 10. The square tube 7 is passed through and fixedly installed on the side wall of one of the cover plates 3. The end of the square tube 7 away from the circuit breaker face shell 2 is flush with the side wall of the cover plate 3 and has a supporting function. A first filter 8 is provided in the port of the square tube 7 away from the circuit breaker face shell 2, which has a filtering function for air. The fan 9 is installed on the inner wall of the square tube 7. A vent is provided on the side wall of the cover plate 3 away from the blowing structure. The second filter 10 is fixedly installed on the vent of the cover plate 3. At the bottom of the two low-level horizontal sections of the circuit breaker face shell 2, a filter 8 is provided. The ends and the inner walls of the vertical sections are provided with a plurality of heat sinks 11, a fan 9 is connected to the output end of the control panel 202, a temperature module is provided in the digital circuit breaker, and the combination of the temperature module, the control panel 202 and the fan 9 is a prior art, which will not be elaborated in detail in this embodiment. The fan 9 draws the outside air of the circuit breaker into between the circuit breaker face shell 2 and the circuit breaker bottom shell 1, and the first filter 8 and the second filter 10 filter the large particles of impurities in the air. In conjunction with the heat sink 11, the airflow carries the heat in the circuit breaker and flows out from the second filter 10, which has a cooling effect, extends the service life of the circuit breaker, and reduces the production cost.

[0030] Reference Figure 1-Figure 5, two sets of plug-in structures are provided between the cover plate 3 and the bottom shell 1 of the circuit breaker, the plug-in structure includes a limit pin 5, the limit pin 5 is fixedly installed on the side of the cover plate 3 close to the bottom shell 1 of the circuit breaker, two limit holes 6 are provided at both ends of the bottom shell 1 of the circuit breaker, the limit pin 5 is slidably installed in the limit hole 6, two plug-in blocks 12 are provided on the opposite sides of the two cover plates 3, and two limit blocks 13 are provided on the outer walls of the two vertical sections of the circuit breaker face shell 2. The limit blocks 13 are slidably connected to the plug-in blocks 12, and the bottom end of the limit block 13 is provided with a limit structure for locking the plug-in block 12. The limit structure includes a U-shaped block 14, and the U-shaped block 14 is fixedly installed at the bottom end of the limit block 13. A slider 15 is slidably installed between the two sides of the U-shaped block 14, and convex strips 150 are provided on both sides of the slider 15 1. Grooves 1502 are provided on the inner walls of both sides of the U-shaped block 14. The convex strips 1501 slide in contact with the grooves 1502. A limit rod 16 is provided on the top of the slider 15. The limit rod 16 is penetrated and slidably connected to the limit block 13. A through hole matching the limit rod 16 is provided at the bottom end of the plug-in block 12. A spring 17 is installed between the bottom end of the slider 15 and the bottom wall of the U-shaped block 14. A dial block 18 is provided on the side of the slider 15 away from the circuit breaker face shell 2. When the digital circuit breaker needs to be maintained, the dial block 18 is pressed down, and the slider 15 slides synchronously in the U-shaped block 14. The spring 17 is compressed, and the limit rod 16 slides out of the through hole of the plug-in block 12. Then the cover plate 3 is pulled out, and after removing the locking screw 204, the circuit breaker face shell 2 is pulled out upward, thereby improving the disassembly and assembly efficiency and the maintenance efficiency.

[0031] The working principle and usage process of the present invention are as follows: During the operation of the digital circuit breaker, when the temperature monitored by the internal temperature module is higher than the set value, the control panel 202 is cooperated to start the fan 9 to draw the outside air of the circuit breaker into between the circuit breaker face shell 2 and the circuit breaker bottom shell 1. The first filter 8 and the second filter 10 filter large particles of impurities in the air. In conjunction with the heat sink 11, the airflow carries the heat in the circuit breaker and flows out from the second filter 10. When the circuit breaker needs to be repaired, the dial block 18 is pressed down, the slider 15 slides synchronously in the U-shaped block 14, the spring 17 is compressed, and the limit rod 16 slides out of the through hole of the plug-in block 12. Then the cover plate 3 is pulled out, and after removing the locking screw 204, the circuit breaker face shell 2 is pulled upward to maintain the circuit breaker.

[0032] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A stable digital circuit breaker, comprising a circuit breaker bottom shell (1) and a circuit breaker front shell (2) slidingly covering the circuit breaker bottom shell (1), characterized in that: The cross section of the circuit breaker face shell (2) is arranged in a stepped shape; both ends of the circuit breaker bottom shell (1) and the circuit breaker face shell (2) are detachably provided with cover plates (3); two sets of plug-in structures are arranged between the cover plate (3) and the circuit breaker bottom shell (1); a blower mechanism is arranged between the two cover plates (3); the bottom ends of the two low-step horizontal sections and the inner walls of the vertical sections of the circuit breaker face shell (2) are provided with a plurality of heat sinks (11); two plug-in blocks (12) are arranged on the opposite sides of the two cover plates (3); two limit blocks (13) are arranged on the outer walls of the two vertical sections of the circuit breaker face shell (2); the limit blocks (13) are slidably connected to the plug-in blocks (12); and the bottom ends of the limit blocks (13) are provided with a limit structure for locking the plug-in blocks (12).

2. A stable digital circuit breaker according to claim 1, characterized in that: Both lower-step bottom ends of the circuit breaker face shell (2) are connected to a plurality of plug-in rods (201), and both vertical section inner walls of the circuit breaker bottom shell (1) are provided with a plurality of slide grooves distributed in an array, and the plug-in rods (201) match adjacent slide grooves.

3. A stable digital circuit breaker according to claim 1, characterized in that: The top surface of the circuit breaker housing (2) is provided with a control panel (202) for adjusting, controlling, and displaying load current, load voltage, load power, and load operating time, and the top surface of the circuit breaker housing (2) is provided with one or more mechanical switches (203).

4. A stable digital circuit breaker according to claim 1, characterized in that: The side wall of the circuit breaker bottom shell (1) is provided with a plurality of load wiring holes, power input wiring holes and neutral line wiring holes, and the low-level top end of the circuit breaker face shell (2) is threadedly connected with a plurality of locking screws (204), and the locking screws (204) are used to lock the wires.

5. A stable digital circuit breaker according to claim 1, characterized in that: The two cover plates (3) are each provided with a convex strip (4) connected end to end on one side facing each other, and the circuit breaker bottom shell (1) and the circuit breaker face shell (2) are both slidably connected to the convex strip (4).

6. A stable digital circuit breaker according to claim 1, characterized in that: The plug-in structure comprises a limit pin (5), the limit pin (5) being fixedly mounted on a side of the cover plate (3) close to the circuit breaker bottom shell (1), two limit holes (6) being provided at both ends of the circuit breaker bottom shell (1), and the limit pin (5) being slidably mounted in the limit holes (6).

7. A stable digital circuit breaker according to claim 3, characterized in that: The air blowing mechanism comprises a square tube (7), a fan (9) and a second filter (10); the square tube (7) penetrates through and is fixedly mounted on the side wall of one of the cover plates (3); an end of the square tube (7) away from the circuit breaker housing (2) is arranged flush with the side wall of the cover plate (3); a first filter (8) is arranged in a port of the square tube (7) away from the circuit breaker housing (2); the fan (9) is mounted on the inner wall of the square tube (7); a vent is arranged on the side wall of the cover plate (3) away from the air blowing structure; and the second filter (10) is fixedly mounted on the vent of the cover plate (3).

8. A stable digital circuit breaker according to claim 1, characterized in that: The limiting structure comprises a U-shaped block (14), wherein the U-shaped block (14) is fixedly mounted on the bottom end of the limiting block (13), a slider (15) is slidably mounted between the two sides of the U-shaped block (14), a limiting rod (16) is arranged at the top end of the slider (15), the limiting rod (16) and the limiting block (13) are penetrated and slidably connected, a through hole matching the limiting rod (16) is arranged at the bottom end of the plug-in block (12), a spring (17) is installed between the bottom end of the slider (15) and the bottom wall of the U-shaped block (14), and a shifting block (18) is arranged on the side of the slider (15) away from the circuit breaker housing (2).

9. A stable digital circuit breaker according to claim 8, characterized in that: The two sides of the sliding block (15) are provided with convex strips (1501), and the inner walls on both sides of the U-shaped block (14) are provided with grooves (1502), and the convex strips (1501) and the grooves (1502) fit and slide.

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