Stable molded case circuit breaker convenient to assemble

Abstract

The utility model discloses a stable molded case circuit breaker convenient to assemble, belongs to the technical field of circuit breakers, and aims to solve the problem that an existing molded case circuit breaker is tedious to mount and dismount. The stable molded case circuit breaker convenient to assemble comprises a mounting surface, supporting plates are fixedly connected to the positions, close to the two sides, of the front end of the mounting surface, and a two-way threaded rod is rotationally connected between the two supporting plates; a two-way threaded rod is installed on the outer side of one supporting plate, a servo motor corresponding to the two-way threaded rod is installed on the outer side of one supporting plate, two ball nut seats are rotationally connected to the outer wall of the two-way threaded rod, and installation blocks are fixedly connected to the outer walls of the two ball nut seats. The clamping grooves and the connecting columns are clamped and fixed, so that detachable connection of the circuit breaker body and the mounting block is realized, workers can conveniently mount and dismount the circuit breaker body, the labor intensity of the workers is greatly reduced, and the assembly efficiency of the circuit breaker body in use is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit breakers, and in particular relates to a stable molded case circuit breaker which is easy to assemble. Background Art

[0002] A circuit breaker is an electrical device used to disconnect the flow of current in a circuit, usually to protect the circuit from faults such as overload or short circuit. They can be manually operated or automatically triggered to prevent the current in the circuit from exceeding a safe range. The main function of a circuit breaker is to disconnect the current in the circuit to prevent damage to equipment in the circuit or fire. A molded case circuit breaker is an electrical protection device that is usually used to protect the circuit from faults such as overload or short circuit. They usually have a plastic casing to isolate the circuit and provide safety protection.

[0003] The molded case circuit breaker in the prior art has a patent announcement number of CN203312197U. The above patent includes contacts, a base, screw holes, and grooves. The contacts are located above the base, six grooves are located on the sides of the base, and the screw holes are located in the grooves. The length of the base is fifteen centimeters and the width of the base is nine centimeters. The molded case circuit breaker of the utility model is fixed by screw holes, etc., which enhances the fixing effect and will not loosen; but in actual use, there are still the following deficiencies: from a practical point of view, the device installs and fixes the molded case circuit breaker by bolts, and the installation and disassembly are relatively cumbersome. Specific tools must be used to complete the disassembly and assembly, which reduces the assembly efficiency of the molded case circuit breaker.

[0004] Therefore, there is a need for a stable molded case circuit breaker that is easy to assemble, so as to solve the problem of complicated installation and disassembly of the molded case circuit breaker in the prior art. Utility Model Content

[0005] The purpose of the utility model is to provide a stable molded case circuit breaker that is easy to assemble, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a stable molded case circuit breaker that is easy to assemble, comprising a mounting surface, wherein the front end of the mounting surface is fixedly connected with support plates near both sides, a bidirectional threaded rod is rotatably connected between the two support plates, a servo motor corresponding to the bidirectional threaded rod is installed on the outer side of one of the support plates, two ball nut seats are rotatably connected to the outer wall of the bidirectional threaded rod, the outer walls of the two ball nut seats are fixedly connected with mounting blocks, the front ends of the two mounting blocks are provided with a clamping mechanism, the front ends of the two clamping mechanisms are detachably connected with connecting columns, clamping holes are opened on both sides of the two connecting columns, the front ends of the two connecting columns are fixedly connected with a circuit breaker body, a switch dial plate is installed at the front end of the circuit breaker body, and two cooling fans are installed at the front end of the mounting surface.

[0007] It should be noted in the solution that the output end of the servo motor passes through the support plate and is fixedly connected with a bidirectional threaded rod.

[0008] It is further worth noting that the rear ends of the two mounting blocks are fixedly connected with limiting slide plates that slide on the front ends of the mounting surfaces.

[0009] It should be further explained that the clamping mechanism includes a clamping groove opened at the front end of the mounting block, clamping columns are slidably connected on both sides of the clamping groove, pull plates are fixedly connected to the outer sides of the two clamping columns, and two springs are fixedly connected to the inner sides of the two pull plates.

[0010] As a preferred implementation, the spring is fixedly connected between the inner side of the pull plate and the outer side of the mounting block.

[0011] As a preferred implementation, the outer wall of the connecting column is tightly fitted with the inner wall of the clamping groove, and the outer wall of the clamping column is tightly fitted with the inner wall of the clamping hole.

[0012] As a preferred implementation manner, the outer wall of the circuit breaker body is coated with a silicon carbide heat dissipation layer.

[0013] Compared with the prior art, the utility model provides a stable molded case circuit breaker that is easy to assemble, which has at least the following beneficial effects:

[0014] (1) By arranging the clamping column and the clamping hole to cooperate with each other, the clamping groove and the connecting column are clamped and fixed under the action of the spring, thereby realizing the detachable connection between the circuit breaker body and the mounting block, which is convenient for the staff to install and disassemble the circuit breaker body, greatly reducing the labor intensity of the staff and improving the assembly efficiency of the circuit breaker body when in use.

[0015] (2) By setting a servo motor to drive the bidirectional threaded rod to rotate, the two ball nut seats are moved in the horizontal direction, so that the position of the two mounting blocks can be adjusted, which can meet the installation requirements of circuit breaker bodies of different specifications and sizes. At the same time, a heat dissipation fan is set to cool the circuit breaker body to avoid long-term high-temperature operation of the circuit breaker body, thereby extending the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model from a first perspective;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model from a second viewing angle;

[0018] Figure 3 This is a partial exploded view of the front end of the installation surface of the utility model;

[0019] Figure 4This is a partial exploded view of the rear end of the circuit breaker body of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the clamping mechanism of the utility model.

[0021] In the figure: 1. Mounting surface; 2. Support plate; 3. Bidirectional threaded rod; 4. Servo motor; 5. Ball nut seat; 6. Mounting block; 7. Snap-fit ​​mechanism; 701. Snap-fit ​​groove; 702. Snap-fit ​​column; 703. Pull plate; 704. Spring; 8. Connecting column; 9. Snap-fit ​​hole; 10. Circuit breaker body; 11. Switch plate; 12. Cooling fan. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the embodiments.

[0023] See also Figure 1-5 The utility model provides a stable molded case circuit breaker which is easy to assemble, including a mounting surface 1, a support plate 2 is fixedly connected to the front end of the mounting surface 1 near both sides, a bidirectional threaded rod 3 is rotatably connected between the two support plates 2, a servo motor 4 corresponding to the bidirectional threaded rod 3 is installed on the outer side of one of the support plates 2, two ball nut seats 5 are rotatably connected to the outer wall of the bidirectional threaded rod 3, and mounting blocks 6 are fixedly connected to the outer walls of the two ball nut seats 5, and the front ends of the two mounting blocks 6 are provided with a clamping mechanism 7, and the front ends of the two clamping mechanisms 7 can be detachably connected with connecting columns 8, and clamping holes 9 are opened on both sides of the two connecting columns 8, and the front ends of the two connecting columns 8 are fixedly connected with a circuit breaker body 10, and a switch dial plate 11 is installed at the front end of the circuit breaker body 10, and two heat dissipation fans 12 are installed at the front end of the mounting surface 1.

[0024] Further as Figure 1 , Figure 2 and Figure 3 As shown, it is worth explaining in detail that the output end of the servo motor 4 passes through the support plate 2 and is fixedly connected to a bidirectional threaded rod 3, ensuring that the servo motor 4 can drive the bidirectional threaded rod 3 to rotate smoothly, thereby providing driving force for the two ball nut seats 5 to move in the horizontal direction, so that the two mounting blocks 6 can be adjusted in position according to actual needs.

[0025] Further as Figure 2 and Figure 3 As shown, it is worth explaining in detail that the rear ends of the two mounting blocks 6 are fixedly connected with a limiting slide sliding on the front end of the mounting surface 1, and the limiting slide plays a role in limiting and guiding the movement of the mounting blocks 6, so that the two mounting blocks 6 can only move in the horizontal direction.

[0026] Further as Figure 1 and Figure 2As shown, it is worth specifically explaining that the outer wall of the circuit breaker body 10 is coated with a silicon carbide heat dissipation layer. The surface area of ​​the silicon carbide ceramic material has about 20% more pores than that of an ordinary heat sink, and has a larger contact area with the convection medium air, which can take away more heat in the same unit time and timely dissipate heat and cool the circuit breaker body 10. At the same time, the silicon carbide ceramic material has good insulation properties and can work stably under high voltage or high frequency.

[0027] According to the above working process, it can be known that by setting the servo motor 4 to drive the bidirectional threaded rod 3 to rotate, the two ball nut seats 5 are moved in the horizontal direction, so that the two mounting blocks 6 are adjusted in position, which can meet the installation of circuit breaker bodies 10 of different specifications and sizes. At the same time, a heat dissipation fan 12 is set to cool the circuit breaker body 10, so as to avoid the circuit breaker body 10 from running at high temperature for a long time, thereby extending the service life of the device.

[0028] Further as Figure 5 As shown, it is worth specifically explaining that the clamping mechanism 7 includes a clamping groove 701 opened at the front end of the mounting block 6, and clamping columns 702 are slidably connected on both sides of the clamping groove 701. Pull plates 703 are fixedly connected to the outer sides of the two clamping columns 702, and two springs 704 are fixedly connected to the inner sides of the two pull plates 703. By setting the clamping mechanism 7, under the action of the spring 704, the clamping groove 701 and the connecting column 8 are clamped and fixed, thereby realizing the detachable connection between the circuit breaker body 10 and the mounting block 6, which is convenient for the staff to install and disassemble the circuit breaker body 10, greatly reducing the labor intensity of the staff, and improving the assembly efficiency of the circuit breaker body 10 when in use.

[0029] Further as Figure 5 As shown, it is worth explaining in detail that the spring 704 is fixedly connected between the inner side of the pull plate 703 and the outer side of the mounting block 6 to ensure that the spring 704 can drive the clamping column 702 to slide flexibly on both sides of the clamping groove 701.

[0030] Further as Figure 4 and Figure 5 As shown, it is worth explaining in detail that the outer wall of the connecting column 8 fits tightly with the inner wall of the snap-in groove 701, and the outer wall of the snap-in column 702 fits tightly with the inner wall of the snap-in hole 9, so that the connecting column 8 and the snap-in groove 701 can be tightly connected to avoid gaps that cause the connection to slip.

[0031] This solution has the following working process: in actual use, first turn on the servo motor 4 to drive the bidirectional threaded rod 3 to rotate, so that the two ball nut seats 5 drive the two mounting blocks 6 to adjust the distance according to the specifications of the circuit breaker body 10. After the distance adjustment is completed, pull the pull plate 703 outward to extract the clamping column 702, insert the connecting column 8 into the inner wall of the clamping groove 701, and then release the pull plate 703. The spring 704 drives the clamping column 702 to reset and insert it into the inner wall of the clamping hole 9, completing the detachable connection between the connecting column 8 and the clamping groove 701, thereby completing the assembly of the circuit breaker body 10 on the mounting surface 1.

[0032] In summary, by setting a servo motor 4 to drive the bidirectional threaded rod 3 to rotate, the two ball nut seats 5 are moved in the horizontal direction, so that the two mounting blocks 6 are adjusted in position, which can meet the installation of circuit breaker bodies 10 of different sizes. At the same time, a heat dissipation fan 12 is set to cool the circuit breaker body 10, so as to avoid the circuit breaker body 10 from running at high temperature for a long time, thereby extending the service life of the device; by setting a clamping mechanism 7, under the action of a spring 704, the clamping groove 701 and the connecting column 8 are clamped and fixed, thereby realizing a detachable connection between the circuit breaker body 10 and the mounting block 6, which is convenient for the staff to install and disassemble the circuit breaker body 10, greatly reducing the labor intensity of the staff, and improving the assembly efficiency of the circuit breaker body 10 when in use.

Claims

1. A stable molded case circuit breaker that is easy to assemble, comprising a mounting surface (1), characterized in that: The front end of the mounting surface (1) is fixedly connected to support plates (2) near both sides, a bidirectional threaded rod (3) is rotatably connected between the two support plates (2), a servo motor (4) corresponding to the bidirectional threaded rod (3) is installed on the outer side of one of the support plates (2), two ball nut seats (5) are rotatably connected to the outer wall of the bidirectional threaded rod (3), the outer walls of the two ball nut seats (5) are fixedly connected to mounting blocks (6), the front ends of the two mounting blocks (6) are provided with a clamping mechanism (7), the front ends of the two clamping mechanisms (7) are detachably connected to connecting columns (8), both sides of the two connecting columns (8) are provided with clamping holes (9), the front ends of the two connecting columns (8) are fixedly connected to a circuit breaker body (10), the front end of the circuit breaker body (10) is provided with a switch plate (11), and the front end of the mounting surface (1) is provided with two heat dissipation fans (12).

2. The stable molded case circuit breaker that is easy to assemble according to claim 1 is characterized in that: The output end of the servo motor (4) passes through the support plate (2) and is fixedly connected to a bidirectional threaded rod (3).

3. The stable molded case circuit breaker that is easy to assemble according to claim 1 is characterized in that: The rear ends of the two mounting blocks (6) are fixedly connected to a limiting slide plate which slides on the front end of the mounting surface (1).

4. The stable molded case circuit breaker that is easy to assemble according to claim 1 is characterized in that: The clamping mechanism (7) comprises a clamping groove (701) provided at the front end of the mounting block (6), clamping columns (702) being slidably connected to both sides of the clamping groove (701), a pull plate (703) being fixedly connected to the outer sides of the two clamping columns (702), and two springs (704) being fixedly connected to the inner sides of the two pull plates (703).

5. A stable molded case circuit breaker that is easy to assemble according to claim 4, characterized in that: The spring (704) is fixedly connected between the inner side of the pull plate (703) and the outer side of the mounting block (6).

6. The stable molded case circuit breaker that is easy to assemble according to claim 4, characterized in that: The outer wall of the connecting column (8) is tightly fitted with the inner wall of the clamping groove (701), and the outer wall of the clamping column (702) is tightly fitted with the inner wall of the clamping hole (9).

7. The stable molded case circuit breaker that is easy to assemble according to claim 1, characterized in that: The outer wall of the circuit breaker body (10) is coated with a silicon carbide heat dissipation layer.

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