CN220121766U - Arc extinguishing cover for miniature circuit breaker - Google Patents
Arc extinguishing cover for miniature circuit breaker Download PDFInfo
- Publication number
- CN220121766U CN220121766U CN202321760208.4U CN202321760208U CN220121766U CN 220121766 U CN220121766 U CN 220121766U CN 202321760208 U CN202321760208 U CN 202321760208U CN 220121766 U CN220121766 U CN 220121766U
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- arc
- plate
- plates
- insulating
- extinguishing
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- 238000009434 installation Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 6
- 238000005192 partition Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses an arc-extinguishing cover for a miniature circuit breaker, which comprises an insulating bottom plate and insulating side plates arranged on two sides of the insulating bottom plate, wherein a plurality of arc-extinguishing grid plates are arranged between the insulating side plates, a plurality of mounting grooves matched with the arc-extinguishing grid plates are arranged on the insulating bottom plate, guide grooves communicated with the mounting grooves are arranged on the insulating side plates, a fixed plate is further arranged on the inner side of the insulating side plates, and a plurality of first plugs matched with the guide grooves are arranged on the fixed plate. During installation, the arc-extinguishing grid sheet is inserted into the installation groove along the guide groove, and then the first plug is matched with the opening of the guide groove.
Description
Technical Field
The utility model belongs to the technical field of arc-extinguishing chambers, and particularly relates to an arc-extinguishing chamber for a miniature circuit breaker.
Background
A certain amount of electric arcs can be generated in the closing and separating process of the movable contact and the fixed contact in the miniature circuit breaker, the existence of the electric arcs prolongs the conduction time of the movable contact and the fixed contact, and the electric power failure or safety accident is easy to cause; meanwhile, in the long-term use process of the miniature circuit breaker, the high temperature generated by the electric arc can melt and evaporate the surface of the contact, so that the normal use of the contact is affected.
In order to quickly extinguish an arc, an arc-extinguishing cover is arranged at the contact position of a movable contact and a static contact at present, the arc-extinguishing cover generally comprises two insulating plates and a plurality of arc-extinguishing grid sheets arranged between the insulating plates, and after the arc enters the arc-extinguishing cover, the arc-extinguishing cover is split by the arc-extinguishing grid sheets to be quickly extinguished.
The existing arc-extinguishing cover is characterized in that pins are arranged on two sides of an arc-extinguishing grid sheet in the existing arc-extinguishing cover, a plurality of slots for inserting the pins are arranged on an insulating plate, and the arc-extinguishing grid sheet is fixed on the insulating plate after the slots are matched with the pins. However, the following problems exist in assembling the insulating plate and the arc extinguishing grid by inserting the slots and the pins: after the arc-extinguishing grid plates are matched with one of the insulating plates, the other insulating plate can be continuously installed, and in the process, the arc-extinguishing grid plates are easy to incline due to lack of support, so that the arc-extinguishing grid plates are fixed by other tools, and the production efficiency of the arc-extinguishing cover is affected.
Disclosure of Invention
Aiming at the problem that the production efficiency is reduced because the arc extinguishing grid plates of the existing arc extinguishing chamber are fixed by means of tools in the assembly process, the following utility model is proposed:
the utility model provides an arc-extinguishing chamber for miniature circuit breaker, includes insulating bottom plate and locates the insulating curb plate of insulating bottom plate both sides, be equipped with a plurality of arc-extinguishing bars piece between the insulating curb plate, be equipped with a plurality of mounting grooves that match with the arc-extinguishing bars piece on the insulating bottom plate, be equipped with the guide way that is linked together with the mounting groove on the insulating curb plate, still be equipped with the fixed plate in insulating curb plate inboard, be equipped with a plurality of first plugs that match with the guide way on the fixed plate.
Further, a plurality of diaphragm plates are arranged on the insulating bottom plate, the mounting grooves are formed in the diaphragm plates, and through holes are formed in intervals between the adjacent diaphragm plates.
Further, a plurality of second plugs are further arranged on the fixing plate, the second plugs are inserted and matched in gaps between the arc extinguishing grid plates, and the matched fastening degree of the fixing plate and the insulating side plates is improved.
Further, limiting plates extending inwards are arranged at the top and the bottom of the insulating side plate, and the limiting plates are attached to the fixing plates, so that the fixing plates and the insulating side plate can be conveniently combined in a positioning mode.
Further, a groove-shaped structure is formed between the fixing plate and the insulating side plate, a limiting block which extends vertically is arranged on the inner side of the limiting plate, the limiting block is matched with the groove-shaped structure, and the limiting block prevents the fixing plate from being excessively inserted.
Further, two sides of the arc extinguishing grating sheet are provided with grating sheet feet which are inserted into the guide grooves in a fitting way.
Further, the arc-extinguishing grid plates are further provided with grid plate notches positioned between the grid plate feet, the grid plate notches incline towards one side, the grid plate notches of the adjacent arc-extinguishing grid plates face opposite directions, and resistance of the arc entering the arc-extinguishing chamber is reduced.
Advantageous effects
The utility model provides an arc-extinguishing cover for a miniature circuit breaker, which comprises an insulating bottom plate and insulating side plates arranged on two sides of the insulating bottom plate, wherein a plurality of arc-extinguishing grid plates are arranged between the insulating side plates, a plurality of mounting grooves matched with the arc-extinguishing grid plates are arranged on the insulating bottom plate, guide grooves communicated with the mounting grooves are arranged on the insulating side plates, a fixed plate is further arranged on the inner side of the insulating side plates, a plurality of first plugs matched with the guide grooves are arranged on the fixed plate, and when the miniature circuit breaker is assembled, the arc-extinguishing grid plates are inserted and mounted into the mounting grooves along the guide grooves and then the first plugs are inserted into the openings of the guide grooves.
The utility model has the advantages that the arc extinguishing grid plates are not required to be fixed by other tools, the arc extinguishing cover is convenient for operators to assemble, and the working efficiency is improved.
Drawings
Fig. 1 is a schematic perspective view of an arc chute according to the present utility model;
FIG. 2 is a schematic perspective view of an insulating bottom plate and insulating side plates according to the present utility model;
fig. 3 is a schematic perspective view of an arc extinguishing grid plate in the present utility model;
fig. 4 is a schematic perspective view of a fixing plate according to the present utility model.
The correspondence between the reference numerals and the component names in the drawings is as follows:
1. an insulating base plate; 2. arc extinguishing grid plates; 3. a fixing plate; 11. an insulating side plate; 12. a mounting groove; 13. a guide groove; 14. a through hole; 15. a limiting plate; 16. a limiting block; 17. a diaphragm; 21. grid plate feet; 22. grid notch; 31. a first plug; 32. and a second plug.
Detailed Description
The technical scheme of the present utility model will be clearly and completely described in the following examples.
It will be apparent that the described embodiments are merely some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
In the present utility model, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are only used to better describe the present utility model and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations.
In addition to the above terms may be used to denote orientation or positional relationships, other meanings may be used, such as the term "upper" may also be used in some cases to denote some sort of attachment or connection. The specific meaning of these terms in the present utility model will be understood by those of ordinary skill in the art according to the specific circumstances.
As shown in fig. 1-4, an arc-extinguishing cover for a miniature circuit breaker according to a preferred embodiment of the present utility model includes an insulating bottom plate 1 and insulating side plates 11, the insulating side plates 11 are fixedly disposed on two sides of the insulating bottom plate 1, a plurality of arc-extinguishing grid plates 2 are disposed between the two insulating side plates 11, a plurality of transverse partition plates 17 are disposed on the insulating bottom plate 1, square through holes 14 are spaced between the transverse partition plates 17, mounting grooves 12 extending transversely are further disposed on the transverse partition plates 17, guide grooves 13 penetrating through the insulating side plates 11 vertically are disposed on two sides of the mounting grooves 12, grid plate feet 21 are disposed on two sides of the arc-extinguishing grid plates 2, the grid plate feet 21 are matched with the guide grooves 13, a fixing plate 3 is disposed on an inner side of each insulating side plate 11, a plurality of first plugs 31 are disposed vertically on the fixing plate 3, and the first plugs 31 are matched with openings of the guide grooves 13.
During the assembly production of the arc-extinguishing chamber, the gate feet 21 of each arc-extinguishing gate 2 are inserted along the guide groove 13 until the side parts of the arc-extinguishing gate 2 are horizontally attached and inserted into the installation groove 12, and then the first plugs 31 on the fixing plates 3 are matched and inserted into the openings of the guide groove 13, so that the assembly of the arc-extinguishing chamber is completed, and in the whole assembly process, the arc-extinguishing gate 2 is limited by the guide groove 13 and the installation groove 12, so that the arc-extinguishing gate 2 is not required to be fixed by other tools, the installation work of operators is facilitated, and the production efficiency of the arc-extinguishing chamber is improved.
In this embodiment, the side portion of the fixing plate 3 is further provided with a plurality of second plugs 32, and the second plugs 32 are matched with gaps between the arc extinguishing grid plates 2 so as to be inserted between the arc extinguishing grid plates 2 in a fitting manner. Further, limiting plates 15 extending horizontally towards the inner side are arranged at the top and the bottom of the insulating side plate 11, groove-shaped structures are formed on the inner sides of the fixed plate 3 and the insulating side plate 11, vertically extending limiting blocks 16 are arranged on the inner sides of the limiting plates 15, and the limiting blocks 16 are matched with the groove-shaped structures.
The top and bottom of the fixing plate 3 are respectively attached to the fixing plate 3 and then are engaged with the insulating side plate 11, and in this process, the second plugs 32 are horizontally inserted between the arc extinguishing grid plates 2, and then the fixing plate 3 is blocked by the limiting blocks 16 and is mounted in place.
In order to further improve the arc-extinguishing efficiency, each arc-extinguishing grating sheet 2 is further provided with grating sheet notches 22 between grating sheet legs 21, in this embodiment, the grating sheet notches 22 are inclined angle notches, and the grating sheet notches 22 of adjacent arc-extinguishing grating sheets 2 face opposite directions, and staggered grating sheet notches 22 reduce the resistance when the arc enters the arc-extinguishing grating sheet 2, so that the arc-extinguishing efficiency is improved.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (7)
1. The utility model provides an arc-extinguishing chamber for miniature circuit breaker, includes insulating bottom plate (1) and locates insulating curb plate (11) of insulating bottom plate (1) both sides, be equipped with a plurality of arc-extinguishing bars piece (2), its characterized in that between insulating curb plate (11): the novel arc extinguishing device is characterized in that a plurality of mounting grooves (12) matched with the arc extinguishing grid plates (2) are formed in the insulating bottom plate (1), guide grooves (13) communicated with the mounting grooves (12) are formed in the insulating side plates (11), fixing plates (3) are further arranged on the inner sides of the insulating side plates (11), and a plurality of first plugs (31) matched with the guide grooves (13) are arranged on the fixing plates (3).
2. The arc chute of claim 1 wherein: a plurality of diaphragm plates (17) are arranged on the insulating bottom plate (1), the mounting grooves (12) are formed in the diaphragm plates (17), and through holes (14) are formed in intervals between adjacent diaphragm plates (17).
3. The arc chute of claim 1 wherein: the fixed plate (3) is also provided with a plurality of second plugs (32), and the second plugs (32) are inserted and matched in gaps between the arc extinguishing grid plates (2).
4. The arc chute of claim 1 wherein: the top and the bottom of the insulating side plate (11) are provided with limiting plates (15) extending inwards, and the limiting plates (15) are attached to the fixed plate (3).
5. The arc chute of claim 4 wherein: a groove-shaped structure is formed between the fixed plate (3) and the insulating side plate (11), a limiting block (16) extending vertically is arranged on the inner side of the limiting plate (15), and the limiting block (16) is matched with the groove-shaped structure.
6. The arc chute of claim 1 wherein: grid plate feet (21) are arranged on two sides of the arc extinguishing grid plate (2), and the grid plate feet (21) are inserted into the guide grooves (13) in a fitting mode.
7. The arc chute of claim 6 wherein: the arc-extinguishing grid plates (2) are further provided with grid plate notches (22) positioned between the grid plate legs (21), the grid plate notches (22) incline towards one side, and the grid plate notches (22) of the adjacent arc-extinguishing grid plates (2) face opposite directions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321760208.4U CN220121766U (en) | 2023-07-06 | 2023-07-06 | Arc extinguishing cover for miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321760208.4U CN220121766U (en) | 2023-07-06 | 2023-07-06 | Arc extinguishing cover for miniature circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220121766U true CN220121766U (en) | 2023-12-01 |
Family
ID=88913979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321760208.4U Active CN220121766U (en) | 2023-07-06 | 2023-07-06 | Arc extinguishing cover for miniature circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220121766U (en) |
-
2023
- 2023-07-06 CN CN202321760208.4U patent/CN220121766U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No.18, Yongxing 2nd Road, Chengdong Industrial functional zone, Yueqing City, Wenzhou City, Zhejiang Province 325600 Patentee after: Hejing Electric Appliances (Wenzhou) Co.,Ltd. Country or region after: China Address before: No.18, Yongxing 2nd Road, Chengdong Industrial functional zone, Yueqing City, Wenzhou City, Zhejiang Province 325600 Patentee before: Zhejiang Yanke Electric Appliance Co.,Ltd. Country or region before: China |