Arc extinguish chamber for universal circuit breaker

Abstract

The utility model discloses an arc extinguish chamber for a universal circuit breaker, which comprises a top plate, two sides of the bottom of the top plate are fixedly connected with side plates, the lower parts of the surfaces of the two side plates are symmetrically and fixedly connected with fixing blocks, the fixing blocks are internally provided with fixing cavities, and the fixing cavities are internally provided with plugging positions at equal intervals. And arc extinguishing grid sheets are connected in the plugging positions in a plugging manner. 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] The utility model relates to all -purpose circuit breaker technical field, concretely is a kind of arc chamber for all -purpose circuit breaker. BACKGROUND

[0002] All -purpose circuit breaker is important equipment for protecting circuit in electrical system, can automatically cut off power supply when circuit overload, short circuit or electric leakage occurs, prevent equipment damage or fire occurs.The existing circuit breaker is usually single function, only for specific type of fault protection, cannot meet multiple protection requirements simultaneously.

[0003] The arc chamber used in the all -purpose circuit breaker in prior art adopts integrated structure design.The structure is integrally formed by forging or machining process, although structural strength can be guaranteed, but there are the following obvious defects;Since complex mold or high-precision machining process is needed to realize integrated forming, mold development cost and processing cost are significantly increased, at the same time, when one of arc grids in arc chamber appears wear, fracture and other faults, entire assembly must be replaced.The measured data shows that the average time of this kind of maintenance operation is 2.5 times of split type design, and replacement cost of entire assembly needs to be additionally borne, causing resource waste and integrated structure difficult to adapt to different working condition requirements. SUMMARY

[0004] The utility model aims at providing a kind of arc chamber for all -purpose circuit breaker, to solve the arc chamber used in the all -purpose circuit breaker in prior art mentioned in the above background art adopts integrated structure design.The structure is integrally formed by forging or machining process, although structural strength can be guaranteed, but there are the following obvious defects;Since complex mold or high-precision machining process is needed to realize integrated forming, mold development cost and processing cost are significantly increased, at the same time, when one of arc grids in arc chamber appears wear, fracture and other faults, entire assembly must be replaced.The measured data shows that the average time of this kind of maintenance operation is 2.5 times of split type design, and replacement cost of entire assembly needs to be additionally borne, causing resource waste and integrated structure difficult to adapt to different working condition requirements.

[0005] To realize the above-mentioned purpose, the utility model provides the following technical scheme: a kind of arc chamber for all -purpose circuit breaker, including top plate, the bottom of top plate both sides is fixedly connected with side plate, two the surface of side plate below is fixedly connected with fixed block, fixed cavity is set in the fixed block, the plug-in site is set in the fixed cavity at equal intervals, and the arc grid piece is connected with plug-in in the plug-in site.

[0006] Preferably, the surface of side plate below is set with notch in the opposite position of plug-in site, and the top surface of side plate is set with a plurality of threaded holes.

[0007] Preferably, the arc-extinguishing grid piece bottom is fixedly connected with a clamping block on both sides, and the clamping block is clamped in the notch.

[0008] Preferably, a connecting hole is arranged on the surface of the top plate around the threaded hole, and the connecting hole and the threaded hole are connected by a fastener.

[0009] Preferably, a groove is arranged on the bottom surface of the top plate, and a through hole is arranged between the two arc-extinguishing grid pieces.

[0010] Beneficial effects

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] According to the structural design of the utility model, the complicated mold and high-precision integrated process are avoided, the mold development cost and processing cost are significantly reduced, when a local component is damaged, only the corresponding split assembly needs to be replaced, the whole does not need to be replaced, the component replacement cost is saved, resource waste is reduced, and the split structure is convenient for integrating different functional modules, compatible with various workpieces or use environments, and the versatility and expansibility of the device are improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is a whole structure schematic view of the utility model;

[0014] Fig. 2 It is an explosion structure schematic view of the utility model;

[0015] Fig. 3 It is a top plate structure schematic view of the utility model.

[0016] The correspondence between the annotations of the drawings and the component names in the drawings is as follows:

[0017] 1. top plate; 2. side plate; 3. arc-extinguishing grid piece; 11. groove; 12. connecting hole; 13. through hole; 21. fixed block;

[0018] 22. fixed cavity; 23. connector; 24. notch; 25. threaded hole; 31. clamping block. DETAILED DESCRIPTION

[0019] The technical solutions of the utility model will be described clearly and completely in combination with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0020] It should be noted that in the description of the utility model, 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 used for the convenience of describing the present application and simplifying the description, and are not intended to 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 construed as limiting the utility model. In addition, the terms "first", "second" and "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0021] As Figs. 1-3 It is a structural schematic view of the arc-extinguishing chamber for the universal circuit breaker, and in the embodiment, the arc-extinguishing chamber for the universal circuit breaker comprises a top plate 1, the bottom of the top plate 1 is fixedly connected with side plates 2 on both sides, the surfaces of the two side plates 2 are symmetrically fixedly connected with fixed blocks 21 below, the fixed blocks 21 are provided with fixed cavities 22, the fixed cavities 22 are provided with plug-in positions 23 at equal intervals, and the plug-in positions 23 are connected with arc-extinguishing grid fins 3 in plug-in connection; in combination with the structural design of the utility model, the complex mold and high-precision integrated process are avoided, the mold development cost and processing cost are significantly reduced, when local components are damaged, only the corresponding split components need to be replaced, the whole does not need to be replaced, the component replacement cost is saved, resource waste is reduced, and the split structure facilitates the integration of different functional modules, is compatible with various workpieces or use environments, and the versatility and expansibility of the device are improved.

[0022] In the embodiment, the side plates 2 are provided with notches 24 below the surfaces at positions opposite to the plug-in positions 23, the arc-extinguishing grid fins 3 are fixedly connected with clamping blocks 31 on both sides of the bottom, and the clamping blocks 31 are clamped in the notches 24, so that the side plates 2 and the arc-extinguishing grid fins 3 are clamped with each other, the top surfaces of the side plates 2 are provided with a plurality of threaded holes 25, the top plate 1 is provided with connecting holes 12 around the surfaces at positions opposite to the threaded holes 25, and the connecting holes 12 and the threaded holes 25 are connected through fasteners, so that the top plate 1 and the side plates 2 are connected and fixed, and the falling of the arc-extinguishing grid fins 3 is effectively avoided.

[0023] In the embodiment, the bottom surface of the top plate 1 is provided with a groove 11, the setting of the groove 11 can avoid the interference with the arc-extinguishing grid fins 3, and the arc-extinguishing grid fins of different specifications can be highlighted to adapt to different specifications of the arc-extinguishing grid fins, the groove 11 is provided with a through hole 13 between the two arc-extinguishing grid fins 3, and the setting of the through hole 13 can realize the heat dissipation, and the heat dissipation performance is improved.

[0024] The above is further detailed description of the utility model in combination with specific embodiments, and cannot be determined that the utility model specific implementation is limited to these descriptions. 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, and all should be regarded as belonging to the protection scope determined by the claims submitted by the utility model.

Claims

1. An arc-extinguishing chamber for a universal circuit breaker, comprising a top plate (1), characterized in that: The top plate (1) is fixedly connected to the two sides of the bottom of the side plate (2). The two side plates (2) are symmetrically fixedly connected to the bottom of the two side plates (2). The fixed block (21) has a fixed cavity (22) inside. The fixed cavity (22) has equidistant insertion positions (23) inside. The insertion positions (23) are connected to the arc extinguishing grid plate (3).

2. The arc-extinguishing chamber for a universal circuit breaker according to claim 1, characterized in that: The side plate (2) has a notch (24) at the position opposite to the insertion position (23) on the lower surface of the side plate (2), and a plurality of threaded holes (25) are provided on the top surface of the side plate (2).

3. The arc-extinguishing chamber for a universal circuit breaker according to claim 1, characterized in that: The arc-extinguishing grid plate (3) has a locking block (31) fixedly connected to both sides of its bottom, and the locking block (31) is engaged in the notch (24).

4. The arc-extinguishing chamber for a universal circuit breaker according to claim 1, characterized in that: The top plate (1) has connecting holes (12) at positions opposite to the threaded holes (25) around its surface, and the connecting holes (12) and the threaded holes (25) are connected by fasteners.

5. The arc-extinguishing chamber for a universal circuit breaker according to claim 4, characterized in that: The bottom surface of the top plate (1) is provided with a groove (11), and the surface of the groove (11) is provided with an opening (13) between the two arc-extinguishing grid plates (3).

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