Molded case circuit breaker base assembly and circuit breaker

Abstract

The utility model discloses a molded case circuit breaker base assembly and a circuit breaker. The circuit breaker aims to solve the technical problem that a mounting seat and a circuit breaker main body are inconvenient to cool in the prior art. Comprising a mounting base and a circuit breaker body, the circuit breaker body is assembled on the mounting base, a plurality of electrode plates are assembled on the side wall of the mounting base, circular holes are formed in the side walls of the electrode plates, connecting assemblies are arranged in the circular holes, and a cooling assembly is arranged in an inner cavity of the mounting base. The connecting assembly comprises a screw rod arranged in the round hole, the end face of the screw rod is fixedly connected with a plurality of expansion blocks, the expansion blocks are distributed in an annular array, the side wall of the screw rod is in threaded connection with a nut, and the side wall, located on one side of the expansion blocks, of the screw rod is in threaded connection with a threaded sleeve. And meanwhile, external wires can be conveniently connected.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit breakers, and in particular relates to a molded case circuit breaker base assembly and the circuit breaker. Background Art

[0002] The circuit breaker base primarily provides a stable mounting foundation for the circuit breaker, ensuring it remains firmly in place during operation. Some circuit breaker bases are typically equipped with conductive components that connect the circuit breaker to external circuits to transmit current. Furthermore, the circuit breaker base is typically made of insulating material, providing excellent insulation. However, large currents often flow through the interior of the circuit breaker, causing the temperature to rise. Especially in hot weather, the temperature can easily reach its maximum limit, causing the circuit breaker to trip. Furthermore, conductive plates or terminals are typically connected to the wiring terminals of the conductors, but the base lacks a corresponding fixing structure. Soldering or other forms of connection are required to connect the conductors, making this less practical.

[0003] Therefore, a molded case circuit breaker base assembly and the circuit breaker are designed to improve the above technical defects. Utility Model Content

[0004] (1) Technical problems to be solved

[0005] In view of the deficiencies of the prior art, the purpose of the present invention is to provide a molded case circuit breaker base assembly and the circuit breaker, which aims to solve the technical problem that it is inconvenient to cool the mounting base and the circuit breaker body under the prior art.

[0006] (2) Technical solution

[0007] In order to solve the above technical problems, the present invention provides a molded case circuit breaker base assembly, including a mounting base and a circuit breaker body, the circuit breaker body is assembled on the mounting base, a plurality of electrode sheets are assembled on the side walls of the mounting base, the side walls of the electrode sheets are each provided with a circular hole, a connecting assembly is provided in each of the circular holes, and a cooling assembly is provided in the inner cavity of the mounting base.

[0008] Furthermore, the connecting assembly includes a screw arranged in a circular hole, and the end faces of the screw are fixedly connected to several expansion blocks, the expansion blocks are distributed in a circular array, a nut is threadedly connected to the side wall of the screw, and the side wall of the screw is threadedly connected to a threaded sleeve on one side of the expansion block, and the end face of the threaded sleeve is fixedly connected to a conical cylinder, which abuts against the side wall of the expansion block.

[0009] Furthermore, two annular grooves are provided on the inner wall of the tapered cylinder, and a plurality of balls are mounted in the annular grooves, and the balls are all against the expansion blocks.

[0010] Furthermore, the cooling component includes a radiator mounted on the left and right inner walls of the mounting base, a plurality of air holes are opened on the side walls of the mounting base at the radiator, a transformer module is installed on the inner wall of the mounting base, and a plurality of guide plates are fixedly connected to the inner wall of the mounting base near the radiator.

[0011] Furthermore, the guide plates are all distributed in an inclined manner.

[0012] Furthermore, the left and right side walls of the mounting base are respectively equipped with dustproof nets at the air hole positions.

[0013] (3) Beneficial effects

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model adopts the design of the mounting base, the circuit breaker body and the cooling component, and arranges a radiator inside the mounting base, so that the air inside the mounting base is in a fast-flowing state. During the air flow, the heat generated by the circuit breaker and the heat in the mounting base are taken away, thereby achieving efficient cooling treatment.

[0016] Through the design of the mounting base, electrode sheet and connection assembly, the utility model can stably connect copper wires, terminal blocks, etc. according to the type of external wires, avoiding arcing or poor contact caused by wire shaking during operation, thereby improving the stability of the wiring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the local structure of the utility model;

[0019] Figure 3 This is a side structural diagram of the present utility model;

[0020] Figure 4 A perspective view of the connection assembly of the present invention;

[0021] Figure 5 This is a schematic cross-sectional view of the connecting assembly of the present invention;

[0022] Figure 6 For this utility model Figure 5 A in the enlarged view.

[0023] The markings in the accompanying drawings are: 1. Mounting base; 2. Circuit breaker body; 3. Electrode plate; 4. Screw; 5. Expansion block; 6. Nut; 7. Threaded sleeve; 8. Conical cylinder; 9. Ball; 10. Radiator; 11. Air hole; 12. Transformer module; 13. Guide plate; 14. Dust screen. DETAILED DESCRIPTION

[0024] This specific embodiment is a molded case circuit breaker base assembly, and its structural diagram is as follows Figures 1-6 As shown, it includes a mounting base 1 and a circuit breaker body 2. The circuit breaker body 2 is assembled on the mounting base 1. The side wall of the mounting base 1 is equipped with several electrode sheets 3. The side walls of the electrode sheets 3 are all provided with circular holes. The circular holes are all provided with connecting components. The inner cavity of the mounting base 1 is provided with a cooling component.

[0025] like Figure 4 and Figure 5 As shown, the connecting assembly includes a screw 4 arranged in a circular hole, and the end faces of the screw 4 are fixedly connected to a number of expansion blocks 5, which are distributed in a ring array. A nut 6 is threadedly connected to the side wall of the screw 4, and a threaded sleeve 7 is threadedly connected to the side wall of the screw 4 located on one side of the expansion block 5. The end face of the threaded sleeve 7 is fixedly connected to a tapered cylinder 8, and the tapered cylinder 8 is against the side wall of the expansion block 5.

[0026] The copper wires and terminal blocks can be stably connected according to the type of external wires to avoid arcing or poor contact caused by wire shaking during operation, thereby improving the stability of the wiring. Furthermore, a wire with multiple thin copper wires can be wrapped between the threaded sleeve 7 and the electrode sheet 3 and fixed by squeezing force.

[0027] like Figure 6 As shown, the inner wall of the conical barrel 8 is provided with two annular grooves, in which a number of balls 9 are mounted. The balls 9 are pressed against the expansion block 5. The provision of the balls 9 reduces the friction between the conical barrel 8 and the expansion block 5, allowing the expansion block 5 to be quickly squeezed inward, thereby securing the terminal.

[0028] like Figure 2 and Figure 3 As shown, the cooling assembly includes a heat sink 10 mounted on the left and right inner walls of the mounting base 1. Several air holes 11 are provided on the side walls of the mounting base 1, located near the heat sink 10. A transformer module 12 is mounted on the inner wall of the mounting base 1. Several guide plates 13 are fixedly connected to the inner wall of the mounting base 1 near the heat sink 10. The installation of the heat sink 10 within the mounting base 1 allows for rapid air flow within the mounting base 1. This airflow removes heat generated by the circuit breaker body 2 and heat within the mounting base 1, achieving efficient cooling.

[0029] The transformer module 12 is a mature existing technology, and its principle can be found in the transformer principle of a mobile phone charger, which will not be described in detail in this solution.

[0030] like Figure 2 As shown, the guide plates 13 are all arranged in an inclined distribution. By arranging them in an inclined distribution, when the airflow enters the interior of the mounting base 1, the airflow can be dispersed, increasing the flow area of ​​the airflow and the components inside the mounting base 1, and further improving the cooling effect.

[0031] like Figure 1 and Figure 2 As shown, the left and right side walls of the mounting base 1 are respectively equipped with dust screens 14 at the positions of the air holes 11. The dust screens 14 can filter the dust impurities contained in the air flow entering and exiting the mounting base 1, reducing the residue and accumulation of dust inside the mounting base 1.

[0032] A circuit breaker adopts any one of the above molded case circuit breaker base components.

[0033] Working principle: When it is necessary to connect the external wire to the electrode sheet 3, different installation positions can be selected according to the wire type. When the wire is connected to a ring terminal, the nut 6 can be loosened to remove the screw 4, and then the ring terminal can be sleeved on the screw 4. The screw 4 is inserted into the round hole and the nut 6 is tightened to achieve the connection of the ring terminal. When the terminal is cylindrical, it can be inserted between the expansion blocks 5, and the threaded sleeve 7 is rotated to drive the tapered cylinder 8 to move. The tapered cylinder 8 is used to squeeze the expansion block 5 to achieve the tightening and fixation of the cylindrical terminal.

[0034] When the circuit breaker body 2 generates heat during operation, the radiator 10 can be operated synchronously. The radiator 10 guides the external airflow into the interior of the mounting base 1, so that the airflow is discharged from the other side of the mounting base 1. At the same time, with the setting of the guide plate 13, the airflow can be dispersed when entering the interior of the mounting base 1, thereby increasing the flow area of ​​the airflow and improving the cooling effect.

[0035] All technical features in this embodiment can be freely combined according to actual needs.

[0036] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the scope of protection of the present invention.

Claims

1. A molded case circuit breaker base assembly, comprising a mounting base (1) and a circuit breaker body (2), characterized in that: The circuit breaker body (2) is mounted on the mounting base (1); a plurality of electrode sheets (3) are mounted on the side walls of the mounting base (1); circular holes are provided on the side walls of the electrode sheets (3); connecting components are provided in the circular holes; and a cooling component is provided in the inner cavity of the mounting base (1).

2. The molded case circuit breaker base assembly according to claim 1, characterized in that: The connecting assembly comprises a screw (4) arranged in a circular hole, the end faces of the screw (4) are fixedly connected to a plurality of expansion blocks (5), the expansion blocks (5) are distributed in a ring array, a nut (6) is threadedly connected to the side wall of the screw (4), a threaded sleeve (7) is threadedly connected to the side wall of the screw (4) located on one side of the expansion block (5), the end face of the threaded sleeve (7) is fixedly connected to a tapered cylinder (8), and the tapered cylinder (8) abuts against the side wall of the expansion block (5).

3. The molded case circuit breaker base assembly according to claim 2, characterized in that: Two annular grooves are provided on the inner wall of the tapered cylinder (8), and a plurality of balls (9) are installed in the annular grooves. The balls (9) are all against the expansion block (5).

4. The molded case circuit breaker base assembly according to claim 1, characterized in that: The cooling assembly comprises a radiator (10) mounted on the left and right inner walls of the mounting base (1); a plurality of air holes (11) are provided on the side walls of the mounting base (1) at the radiator (10); a transformer module (12) is mounted on the inner side walls of the mounting base (1); and a plurality of guide plates (13) are fixedly connected to the inner wall of the mounting base (1) near the radiator (10).

5. The molded case circuit breaker base assembly according to claim 4, characterized in that: The guide plates (13) are all distributed in an inclined manner.

6. The molded case circuit breaker base assembly according to claim 4, characterized in that: The left and right side walls of the mounting seat (1) are respectively equipped with dustproof nets (14) at the positions of the air holes (11).

7. A circuit breaker, characterized in that: The invention comprises the molded case circuit breaker base assembly according to any one of claims 1 to 6.

Images