Frame type circuit breaker

Abstract

The utility model discloses a frame type circuit breaker which comprises a protection plate, the protection plate comprises a bottom plate and two side plates, two sides of the bottom plate are fixedly connected with a plurality of fixing plates which are bent upwards, the front end of the bottom plate is fixedly connected with a limiting plate which is bent upwards, and the surfaces of the side plates are provided with limiting openings at positions opposite to the limiting plate. The inner walls of the limiting openings are movably connected with the outer walls of the limiting plates, and the outer walls of the fixing plates make contact with the inner walls of the side plates. By combining the structural design of the utility model, a complex mold and a high-precision integrated process are avoided, the development cost and the processing cost of the mold are obviously reduced, when local parts are damaged, only the corresponding split components need to be replaced, the whole replacement is not needed, the component replacement cost is saved, the resource waste is reduced, and the split structure is convenient for integrating different functional modules, so that the production cost is reduced. And the device is compatible with various workpieces or use environments, and the universality and expansibility of the device are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of frame circuit breakers, specifically a frame-type circuit breaker. Background Technology

[0002] A frame circuit breaker is a mechanical switching device that can connect, carry, and disconnect current under normal circuit conditions, and can also connect, carry, and disconnect current for a certain time under specified abnormal circuit conditions. It is an important power equipment in the power grid.

[0003] Existing frame-type circuit breakers employ a one-piece structure design for their outer protective plates. While this structure ensures structural strength by molding, forging, or machining the protective plate into a single piece, it suffers from several significant drawbacks: the need for complex molds or high-precision machining processes significantly increases mold development and processing costs; furthermore, when one side of the protective plate experiences wear or breakage, the entire assembly must be replaced. Actual test data shows that this type of maintenance takes an average of 2.5 times longer than a split design, and incurs additional costs for replacing the entire assembly, resulting in resource waste and making the one-piece structure unsuitable for various operating conditions. Summary of the Invention

[0004] The purpose of this utility model is to provide a frame-type circuit breaker to address the issue mentioned in the background section where the outer protective plate of the existing frame-type circuit breaker adopts an integrated structural design. While this structure, which uses injection molding, forging, or machining to integrally form the protective plate, ensures structural strength, it suffers from the following significant drawbacks: The need for complex molds or high-precision machining processes to achieve integrated molding significantly increases mold development and processing costs. Furthermore, when one side of the protective plate experiences wear or breakage, the entire assembly must be replaced. Actual measurement data shows that the average time for such maintenance operations is 2.5 times that of a split design, and the additional cost of replacing the entire assembly results in resource waste and makes the integrated structure unsuitable for different operating conditions.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a frame-type circuit breaker, including a protective plate, the protective plate including a bottom plate and two side plates, a plurality of upwardly bent fixing plates fixedly connected to both sides of the bottom plate, an upwardly bent limiting plate fixedly connected to the front end of the bottom plate, a limiting opening opened on the surface of the side plate at the position opposite to the limiting plate, and the inner wall of the limiting opening is movably connected to the outer wall of the limiting plate, and the outer wall of the fixing plate is in contact with the inner wall of the side plate.

[0006] Preferably, the surface of the fixing plate is provided with a threaded hole, and the surface of the side plate is provided with a connecting hole at a position opposite to the threaded hole. The connecting hole and the threaded hole are connected by a fastener.

[0007] Preferably, a chamfer is provided at the corner of the limiting opening.

[0008] Preferably, the rear end surface of the side plate is fixedly connected to a connecting plate extending outward at all four circumferences, and a wiring device is fixedly installed through the connecting plate.

[0009] Preferably, a mounting plate is fixedly connected to the lower part of the outer wall surface of the side plate, and the mounting plate has irregular holes on its surface.

[0010] Beneficial effects

[0011] Compared with existing technologies, the beneficial effects of this utility model are as follows:

[0012] By combining the structural design of this utility model, complex molds and high-precision integrated processes are avoided, significantly reducing mold development costs and processing costs. When a local component is damaged, only the corresponding split component needs to be replaced, without replacing the whole unit, thus saving component replacement costs and reducing resource waste. Furthermore, the split structure facilitates the integration of different functional modules, is compatible with various workpieces or usage environments, and improves the versatility and expandability of the device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the protective plate structure of this utility model;

[0015] Figure 3 This is an exploded structural diagram of the protective plate of this utility model.

[0016] The correspondence between the labels and component names in the attached figures is as follows:

[0017] 1. Protective plate; 2. Wiring device; 3. Mounting plate; 11. Base plate; 12. Side plate; 31. Irregular hole;

[0018] 111. Limiting plate; 112. Fixing plate; 113. Threaded hole; 121. Limiting opening; 122. Chamfer;

[0019] 123. Connecting hole; 124. Connecting plate. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "front," "rear," "inner," "outer," "vertical," and "horizontal," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] like Figure 1-3 This is a schematic diagram of a frame-type circuit breaker according to a preferred embodiment of the present invention. In this embodiment, the frame-type circuit breaker includes a protective plate 1, which comprises a base plate 11 and two side plates 12. Multiple upwardly bent fixing plates 112 are fixedly connected to both sides of the base plate 11. The fixing plates 112 connect and fix the two side plates 12. An upwardly bent limiting plate 111 is fixedly connected to the front end of the base plate 11. Limiting openings 121 are formed on the surface of the side plates 12 at positions opposite to the limiting plate 111, and the inner wall of the limiting opening 121 is flush with the limiting plate 111. The outer wall is movable, and the limiting port 121 cooperates with the limiting plate 111 to achieve a quick assembly effect, while the outer wall of the fixing plate 112 contacts the inner wall of the side plate 12. Combined with the structural design of this utility model, complex molds and high-precision integrated processes are avoided, significantly reducing mold development costs and processing costs. When a local component is damaged, only the corresponding split component needs to be replaced, without replacing the whole, thus saving component replacement costs, reducing resource waste, and the split structure facilitates the integration of different functional modules, is compatible with various workpieces or usage environments, and improves the versatility and expandability of the device.

[0023] In this embodiment, a threaded hole 113 is fixedly opened on the surface of the fixing plate 112, and a connecting hole 123 is opened on the surface of the side plate 12 at the position opposite to the threaded hole 113. The connecting hole 123 and the threaded hole 113 are connected by fasteners, so that the side plate 12 and the bottom plate 11 are fixedly connected.

[0024] In this embodiment, a chamfer 122 is provided at the corner of the limiting port 121. This structure serves to avoid the side plate 12 and the limiting plate 111 from mutually resisting each other, which could prevent installation.

[0025] In this embodiment, the rear end surface of the side plate 12 is fixedly connected to the outwardly extending connecting plate 124 at all four sides, and the wiring device 2 is fixedly installed through the connecting plate 124, so that the wiring device 2 can be installed by fasteners, which facilitates the replacement function in later use.

[0026] In this embodiment, a mounting plate 3 is fixedly connected to the lower outer wall surface of the side plate 12. A special-shaped hole 31 is opened on the surface of the mounting plate 3, and the frame circuit breaker can be installed at the required location through the mounting plate 3.

[0027] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A frame circuit breaker comprising a shield plate (1), characterized in that: The guard board (1) includes a bottom plate (11) and two side plates (12), the bottom plate (11) is fixedly connected with a plurality of upwardly bent fixing plates (112) on both sides, the front end of the bottom plate (11) is fixedly connected with an upwardly bent limiting plate (111), the surface of the side plate (12) is provided with a limiting opening (121) at the opposite position of the limiting plate (111), and the inner wall of the limiting opening (121) is movably connected with the outer wall of the limiting plate (111), and the outer wall of the fixing plate (112) is in contact with the inner wall of the side plate (12).

2. The frame-type circuit breaker according to claim 1, characterized in that: The surface of the fixing plate (112) is fixedly provided with a threaded hole (113), the surface of the side plate (12) is provided with a connecting hole (123) at the opposite position of the threaded hole (113), and the connecting hole (123) is connected with the threaded hole (113) through a fastener.

3. The frame-type circuit breaker of claim 1, wherein: The limiting opening (121) is provided with a chamfer (122) at the corner.

4. The frame-type circuit breaker of claim 1, wherein: The rear end surface of the side plate (12) is fixedly connected with an outwardly extending connecting plate (124) at the periphery, and a wiring device (2) is fixedly installed through the connecting plate (124).

5. The frame-type circuit breaker of claim 4 wherein: The outer wall surface of the side plate (12) is fixedly connected with a mounting plate (3) below, and the surface of the mounting plate (3) is provided with a special-shaped hole (31).

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