Base for molded case circuit breaker

Abstract

The base comprises a base body and a sealing plate connected with the bottom of the base body, a plurality of connecting plates are fixedly connected to the position, opposite to an installation cavity, of the front end of the base body, and first heat dissipation openings are formed in the surfaces of the tops of the connecting plates and the surfaces of the bottoms of the sealing plate. A second heat dissipation opening is formed between the two connecting plates, limiting grooves are formed in the two sides of the surface of the base at equal intervals, limiting blocks are fixedly connected to the positions, opposite to the limiting grooves, of the outer wall of the sealing plate, the limiting blocks move in the limiting grooves, and third heat dissipation openings are formed between the bottom surfaces of the limiting blocks and the top surfaces of the limiting grooves. By combining the structural design, the problems proposed by the background technology are effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a plastic -clad circuit breaker technical field, specifically is a base for plastic -clad circuit breaker. BACKGROUND

[0002] The circuit breaker is a kind of current switch device for distributing electric energy, real-time protection to power line and motor, it can bear, close and break the current in normal circuit according to the normal, overload, short circuit and under voltage etc.

[0003] As a kind of circuit breaker, plastic-clad circuit breaker uses plastic insulator as the shell of device, and also can automatically cut off current after actual current exceeds trip setting value.In actual working process, line board arranged in the interior of plastic-clad circuit breaker is indispensable component of leakage protection, it bears the signal taking of leakage current, signal amplification and signal strength contrast function, can effectively protect the leakage current that harms line or equipment.

[0004] However, the base used by the existing plastic-clad circuit breaker is poor in heat dissipation during long-time use of plastic-clad circuit breaker, heat is easily accumulated in the base, thereby reducing the service life of the base, and the base for the existing plastic-clad circuit breaker is difficult to disassemble and assemble the bottom sealing plate, a large amount of time is spent on disassembling and assembling the sealing plate during maintenance of copper bar in the interior of the base, and practicality is poor. SUMMARY

[0005] The utility model aims at providing a base for plastic-clad circuit breaker to solve the poor heat dissipation of the base used by the existing plastic-clad circuit breaker during long-time use of plastic-clad circuit breaker, heat is easily accumulated in the base, thereby reducing the service life of the base, and the base for the existing plastic-clad circuit breaker is difficult to disassemble and assemble the bottom sealing plate, a large amount of time is spent on disassembling and assembling the sealing plate during maintenance of copper bar in the interior of the base, and practicality is poor.

[0006] To achieve the above object, the utility model provides the following technical scheme: a base for plastic-clad circuit breaker, including base and the sealing plate connected at the bottom of base, the surface of base is equidistantly provided with a plurality of installation cavities, and the installation cavity between two is fixedly connected with partition plate, the front end of base is fixedly connected with a plurality of connecting plates at the opposite position of installation cavity, and the top surface of connecting plate and the bottom surface of sealing plate form first heat dissipation opening, the second heat dissipation opening is formed between two connecting plates, the both sides of surface of base are equidistantly provided with limiting slot, the outer wall of sealing plate is fixedly connected with limiting block at the opposite position of limiting slot, and the limiting block is movable in limiting slot, the third heat dissipation opening is formed between the bottom surface of limiting block and the top surface of limiting slot.

[0007] Preferably, a plurality of profiled guide blocks are fixedly connected at the rear end of the inner wall of the base at equal intervals, profiled guide grooves are formed at positions opposite to the profiled guide blocks on the surface of the sealing plate, and the profiled guide grooves are movably connected with the profiled guide blocks.

[0008] Preferably, clamping blocks are fixedly connected at both sides of the inner wall of the base at equal intervals, downwardly extending elastic connecting strips are fixedly connected at positions opposite to the clamping blocks on the bottom surface of the sealing plate, and the clamping blocks are clamped with the clamping holes.

[0009] Preferably, a first guide position is formed at the top of the outer wall of the clamping block, a second guide position is formed at the bottom of the outer wall of the elastic connecting strip, and the second guide position is movably connected with the surface of the first guide position.

[0010] Preferably, fourth heat dissipation holes are formed at positions opposite to the mounting cavities on the surface of the sealing plate, and through holes are formed at positions opposite to the clamping holes on the surface of the sealing plate.

[0011] Beneficial effects

[0012] Compared with the prior art, the beneficial effects of the present application are:

[0013] The first heat dissipation hole, the second heat dissipation hole, the third heat dissipation hole and the fourth heat dissipation hole are arranged, the heat dissipation capacity of the base itself is enhanced, heat accumulation in the base is avoided, the service life of the base is improved, and the through hole is arranged, the operator can pry the sealing plate from the base through the through hole, the disassembly function is realized, and the practicability is better. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0015] Figure 2 It is a schematic diagram of the base structure of the present application;

[0016] Figure 3 It is a schematic diagram of the sealing plate structure of the present application;

[0017] Figure 4 It is a schematic diagram of the enlarged structure of A of the present application;

[0018] Figure 5 It is a schematic diagram of the enlarged structure of B of the present application;

[0019] Figure 6 It is a schematic diagram of the enlarged structure of C of the present application.

[0020] 1. Base; 2. Sealing plate; 11. Mounting cavity; 12. Partition plate; 13. Connecting plate; 14. Profiled guide block;

[0021] 15. Limiting groove, 16. Third heat dissipation opening; 17. First heat dissipation opening; 18. Second heat dissipation opening; 19. Clamping block;

[0022] 21. Limiting block; 22. Special-shaped guide groove; 23. Fourth heat dissipation opening; 24. Elastic connecting strip; 25. Clamping opening;

[0023] 26. Through opening; 27. Second guide position; 191. First guide position. DETAILED DESCRIPTION

[0024] The technical solutions of the present application will be described clearly and completely in combination with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] In the description of the present application, it should be noted that the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer", "vertical", "horizontal" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0026] As Figures 1-6It is a kind of base structure schematic diagram for moulded case circuit breaker of a preferred embodiment of the utility model, in this embodiment, a base for moulded case circuit breaker, including base 1 and the sealing plate 2 of bottom connection of base 1, multiple installation cavities 11 are equidistantly opened on the surface of base 1, and the partition plate 12 is fixedly connected between two installation cavities 11, the partition plate 12 can isolate the mutual interference between the internal parts of installation cavity 11, multiple connecting plates 13 are fixedly connected in the opposite position of installation cavity 11 at the front end of base 1, and the first heat dissipation port 17 is formed between the top surface of connecting plate 13 and the bottom surface of sealing plate 2, the second heat dissipation port 18 is formed between two connecting plates 13, the heat dissipation effect in the base is carried out through the first heat dissipation port 17 and the second heat dissipation port 18, the limiting slot 15 is equidistantly opened on the surface of base 1, the limiting block 21 is fixedly connected in the opposite position of limiting slot 15 on the outer wall of sealing plate 2, and the limiting block 21 is movable in the limiting slot 15, the guiding and limiting effect of sealing plate 2 during installation between base 1 is realized, the third heat dissipation port 16 is formed between the bottom surface of limiting block 21 and the top surface of limiting slot 15;The utility model sets up the first heat dissipation port 17, the second heat dissipation port 18 and the third heat dissipation port 16, enhances the heat dissipation capacity of base itself, avoids heat accumulation in the base, and improves the service life of base.

[0027] In this embodiment, a plurality of profiled guide blocks 14 are equidistantly fixedly connected to the inner wall of the base 1 at the rear end, a profiled guide groove 22 is formed on the surface of the sealing plate 2 at the opposite position of the profiled guide blocks 14, and the profiled guide groove 22 is movably connected with the profiled guide blocks 14. This structure design realizes the confirmation effect of the positional relationship between the base 1 and the sealing plate 2 during installation, effectively avoiding errors during installation.

[0028] In this embodiment, the clamping blocks 19 are equidistantly fixedly connected to the inner wall of the base 1, and the downwardly extending elastic connecting strips 24 are fixedly connected to the bottom surface of the sealing plate 2 at the opposite position of the clamping blocks 19. The clamping blocks 19 and the clamping blocks 19 are movably connected through the clamping blocks 19 and the clamping blocks 19. This structure design realizes the connection and fixation between the base 1 and the sealing plate 2.

[0029] In this embodiment, the first guide position 191 is formed on the top of the outer wall of the clamping block 19, the second guide position 27 is formed on the bottom of the outer wall of the elastic connecting strip 24, and the second guide position 27 is movably connected with the surface of the first guide position 191. This structure design realizes the inward bending of the elastic connecting strip 24 by the cooperation of the second guide position 27 and the first guide position 191, thereby avoiding the mutual resistance between the elastic connecting strip 24 and the clamping block 19, and achieving better connection and fixation effect between the sealing plate 2 and the base 1.

[0030] In the embodiment, the fourth heat dissipation opening 23 is arranged on the surface of the sealing plate 2 at the position opposite to the mounting cavity 11, which strengthens the base 1 to dissipate heat from multiple directions, and the through opening 26 is arranged on the surface of the sealing plate 2 at the position opposite to the bayonet 25, and the operator can pry up the sealing plate 2 from the base 1 by means of a tool through the through opening 26 to realize the function of dismounting, which is more practical.

[0031] The above is further detailed description of the utility model in combination with specific embodiments, which cannot be deemed as limitation of the utility model to the description. For ordinary skilled in the art to which the utility model belongs, without departing from the concept of the utility model, a number of simple deductions or substitutions can be made, which shall be deemed as belonging to the protection scope determined by the claims of the utility model.

Claims

1. A base for a molded case circuit breaker comprising a base (1) and a cover plate (2) connected to the bottom of the base (1), characterized in that: The base (1) surface equidistantly open with multiple installation cavity (11), and two installation cavity (11) between fixedly connected with partition plate (12), the base (1) front end is located in installation cavity (11) opposite position fixedly connected with multiple connecting plate (13), and the connecting plate (13) top surface and the bottom surface of sealing plate (2) form first heat dissipation port (17), two connecting plate (13) between form second heat dissipation port (18), the base (1) surface both sides equidistantly open with limiting groove (15), the sealing plate (2) outer wall is located in limiting groove (15) opposite position fixedly connected with limiting block (21), and the limiting block (21) is movable in limiting groove (15), the limiting block (21) bottom surface and the top surface between limiting groove (15) form third heat dissipation port (16).

2. The base for molded case circuit breakers of claim 1, wherein: The base (1) inner wall is equidistantly fixedly connected with multiple profiled guide blocks (14) at the rear end, the surface of the sealing plate (2) is provided with a profiled guide groove (22) at the opposite position of the profiled guide blocks (14), and the profiled guide groove (22) is movably connected with the profiled guide blocks (14).

3. The base for molded case circuit breakers of claim 2, wherein: The inner wall of the base (1) is equidistantly fixedly connected with clamping blocks (19) on both sides, and the bottom surface of the sealing plate (2) is fixedly connected with downwardly extending elastic connecting strips (24) at the opposite position of the clamping blocks (19). The surface of the elastic connecting strips (24) is provided with clamping holes (25), and the clamping blocks (19) and the clamping holes (25) are mutually clamped.

4. The base for molded case circuit breakers of claim 3, wherein: The outer wall top of the clamping block (19) is provided with a first guide position (191), and the outer wall bottom of the elastic connecting strip (24) is provided with a second guide position (27), and the second guide position (27) is slidably connected with the surface of the first guide position (191).

5. The base for use in a molded case circuit breaker of claim 3, wherein: The surface of the sealing plate (2) is provided with a fourth heat dissipation port (23) at the opposite position of the installation cavity (11), and the surface of the sealing plate (2) is provided with a through hole (26) at the opposite position of the clamping hole (25).

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