CN214898309U - Arc extinguishing device of miniature circuit breaker - Google Patents
Arc extinguishing device of miniature circuit breaker Download PDFInfo
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- CN214898309U CN214898309U CN202121331575.3U CN202121331575U CN214898309U CN 214898309 U CN214898309 U CN 214898309U CN 202121331575 U CN202121331575 U CN 202121331575U CN 214898309 U CN214898309 U CN 214898309U
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- arc
- arc extinguishing
- circuit breaker
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- extinguishing grid
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Abstract
The utility model relates to an arc control device of miniature circuit breaker, including the explosion chamber, the explosion chamber includes the arc extinguishing bars piece that a plurality of intervals set up and is used for the fixed plate of a plurality of fixed arc extinguishing bars pieces, the fixed plate is fan-shaped distribution including setting up two installation curb plates in a plurality of arc extinguishing bars piece both sides, and a plurality of arc extinguishing bars pieces are fan-shaped distribution, and wherein two arbitrary adjacent arc extinguishing bars pieces all slope the setting relatively. The utility model discloses compare among the prior art multi-disc arc extinguishing bars piece parallel mount explosion chamber structure together, the electric arc that produces when can further promoting the disconnection effectively elongates, divides the branch, extinguishes, improves the breaking capacity of circuit breaker.
Description
Technical Field
The utility model relates to a miniature circuit breaker's arc control device.
Background
The circuit breaker is a mechanical switch electric appliance which can connect, bear and break current under normal circuit conditions and can also connect, bear and break current for a certain time under specified abnormal circuit conditions. The device is mainly used for distributing electric energy and protecting circuits and power supply equipment from damage caused by faults such as overload, undervoltage, short circuit and single-phase grounding, and can be used for infrequent switching of the circuits. The circuit breaker is usually provided with an arc extinguishing chamber, and the arc extinguishing chamber has the main function of quickly extinguishing the moving contact and the static contact when the moving contact and the static contact are switched off to generate electric arcs, and realizes the arc extinguishing function. The existing arc extinguishing chamber mainly comprises arc extinguishing bars and an arc extinguishing bar mounting plate, wherein a plurality of arc extinguishing bars are arranged in parallel and are arranged on the side surface of a moving contact. The more difficult it is to extinguish the arc during actual operation/use, the more easily the arc can fly out of the arc chute (commonly known in the industry as "arcing"), thereby jeopardizing the safety of the power supply system. Therefore, in order to overcome the defect that the breaking capacity is influenced by the arc extinguishing effect of the existing arc extinguishing chamber of the circuit breaker, manufacturers of circuit breakers research and develop zero-flashover arc extinguishing devices with better arc extinguishing performance.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the shortcoming and not enough that prior art exists, and provide a miniature circuit breaker's arc control device.
The utility model discloses the technical scheme who takes as follows: the utility model provides an arc control device of miniature circuit breaker, includes the explosion chamber, the explosion chamber includes the arc extinguishing bars piece that a plurality of intervals set up and is used for the fixed plate of a plurality of arc extinguishing bars pieces, the fixed plate is fan-shaped distribution including setting up two installation curb plates in a plurality of arc extinguishing bars piece both sides, a plurality of arc extinguishing bars pieces, and wherein arbitrary two adjacent arc extinguishing bars pieces all incline relatively and set up.
Wherein any two adjacent arc extinguishing bars are arranged at the same inclined included angle.
The connecting lines of the ends of the arc extinguishing grid pieces far away from the arc inlet are smooth arcs.
The fixed plate comprises a connecting plate which is positioned at one end of each arc extinguishing grid far away from the arc inlet, the connecting plate is fixedly connected with the two mounting side plates, and the connecting plate is an arc-shaped plate.
The arc extinguishing grid plate is characterized in that a slot is formed in the inner side wall of the mounting side plate, one end, close to an arc inlet, of the slot is an opening, and edges of two sides of the arc extinguishing grid plate are limited in the slot.
The arc extinguishing grid piece is characterized in that positioning blocks are protruded from edges of two sides of the arc extinguishing grid piece, a side face, far away from an arc inlet, of each positioning block is a guide inclined face, positioning holes are formed in the installation side plates, and the positioning blocks are in plug-in fit with the positioning holes.
The connecting plate is provided with a plurality of exhaust ports.
And one side of the arc extinguishing grid plate, which corresponds to the arc inlet, is provided with a V-shaped notch.
The inner end of the V-shaped notch is inwards provided with strip-shaped slots which are obliquely arranged relative to the width dimension central line L of the arc-extinguishing grid plate, and the strip-shaped slots of each adjacent arc-extinguishing grid plate are respectively obliquely and alternately arranged upwards and downwards.
The arc extinguishing grid pieces are the same in shape, each arc extinguishing grid piece is provided with an upper limiting fixture block and a lower limiting fixture block, and the upper limiting fixture block and the lower limiting fixture block are different in length; and a first limiting clamping groove and a second limiting clamping groove which are matched with the upper limiting clamping block and the lower limiting clamping block in an inserting manner are respectively formed in the inner side wall of the mounting side plate.
The utility model has the advantages as follows: the utility model discloses compare among the prior art multi-disc arc extinguishing bars piece parallel mount explosion chamber structure together, the electric arc that produces when can further promoting the disconnection effectively elongates, divides the branch, extinguishes, improves the breaking capacity of circuit breaker.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings obtained from these drawings still belong to the scope of the present invention without inventive laboriousness.
Fig. 1 is a schematic structural diagram of an arc extinguish chamber in the present invention;
fig. 2 is a cross-sectional view of an arc extinguish chamber in the utility model;
fig. 3 is a schematic view illustrating the placement of two adjacent arc extinguishing grid pieces in an arc extinguishing chamber according to the present invention;
fig. 4 is a cross-sectional view of a fixed plate in an arc extinguish chamber according to the present invention;
fig. 5 is a schematic structural diagram of a circuit breaker according to the present invention;
in the figure, 1, an arc chute sheet; 101, positioning blocks; 102, a guide slope; 103, "V" shaped notches; 104, slotting in a strip shape; 105, an upper limiting fixture block; 106, a lower limit fixture block; 2, fixing a plate; 201, mounting a side plate; 202, a connecting plate; 203, positioning holes; 204, an exhaust port; 205, a first limiting slot; 206, a second limit slot; 3, a moving contact; 4, static contact; 5, moving contact arc striking pieces; and 6, a static contact arc striking sheet.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.
It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it is understood that "first" and "second" are only used for convenience of expression and should not be construed as limitations to the embodiments of the present invention, and the following embodiments do not describe the embodiments one by one.
The terms of direction and position in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., refer to the direction and position of the attached drawings. Accordingly, the use of directional and positional terms is intended to illustrate and understand the present invention and is not intended to limit the scope of the invention.
The utility model provides an arc control device of miniature circuit breaker, includes the explosion chamber, as shown in fig. 1-2, the explosion chamber includes the arc extinguishing bars piece 1 that a plurality of intervals set up and is used for fixed a plurality of arc extinguishing bars piece 1's fixed plate 2, fixed plate 2 is including setting up two installation curb plates 201 in a plurality of arc extinguishing bars piece 1 both sides, and a plurality of arc extinguishing bars piece 1 are fan-shaped distribution, and wherein arbitrary two adjacent arc extinguishing bars piece 1 homogeneous phases set up to the slope.
Any two adjacent arc extinguishing grid pieces 1 are arranged at the same inclined included angle. That is, a plurality of arc-extinguishing grid plates 1 are uniformly distributed in a fan shape, in this embodiment, any two adjacent arc-extinguishing grid plates 1 are arranged at an inclined included angle of 5 °, and can be adjusted according to actual conditions. The inclined included angle refers to the included angle between the central lines of the two arc extinguishing grid pieces 1.
The connecting lines of the ends of the arc extinguishing grid pieces 1 far away from the arc inlet are smooth arcs.
As shown in fig. 4, the fixing plate 2 includes a connecting plate 202 located at one end of the arc chute plates 1 away from the arc inlet, the connecting plate 202 is fixedly connected to two installation side plates 201, and the connecting plate 202 is an arc-shaped plate.
Slots are formed in the inner side walls of the installation side plates 201, one ends, close to the arc inlets, of the slots are open, and the edges of the two sides of the arc extinguishing grid pieces 1 are limited in the slots.
The arc extinguishing grid piece 1 is characterized in that positioning blocks 101 are protruded from edges of two sides of the arc extinguishing grid piece 1, a guide inclined plane 102 is arranged on the side face, away from an arc inlet, of each positioning block 101, a positioning hole 203 is formed in each mounting side plate 201, and the positioning blocks 101 are matched with the positioning holes 203 in an inserted mode.
The connecting plate 202 is provided with a plurality of air vents 204.
One side of the arc extinguishing grid plate 1, which corresponds to an arc inlet, is provided with a V-shaped notch 103.
The inner end of the V-shaped notch 103 extends inwards to form a strip-shaped slot 104 which is obliquely arranged relative to the width dimension central line L of the arc-extinguishing grid plate 1, and the strip-shaped slots 104 of the adjacent arc-extinguishing grid plates 1 are obliquely and alternately arranged upwards and downwards respectively. Can constitute a unsmooth crisscross arc extinguishing structure like this, effectively elongate electric arc, make electric arc can cool off fast and extinguish, have higher disjunction ability and better arc extinguishing effect.
The arc-extinguishing grid pieces 1 are identical in shape, each arc-extinguishing grid piece 1 is provided with an upper limiting fixture block 105 and a lower limiting fixture block 106, and the upper limiting fixture block 105 and the lower limiting fixture block 106 are different in length; the inner side walls of the mounting side plates 201 are respectively provided with a first limiting clamping groove 205 and a second limiting clamping groove 206 which are matched with the upper limiting clamping block 105 and the lower limiting clamping block 106 to form a plug-in fit, and the first limiting clamping groove 205 and the second limiting clamping groove 206 of one mounting side plate 201 are respectively arranged opposite to the second limiting clamping groove 206 and the first limiting clamping groove 205 of the other mounting side plate 201 so as to fix arc-extinguishing grid pieces with the same shape. The first limiting clamping groove 205 and the second limiting clamping groove 206 are the above-mentioned slots, and both ends close to the arc inlet are openings, and during installation, the arc-extinguishing grid plate 1 is inserted from one side of the opening of the fixing plate 2 far away from the connecting plate 202 to complete installation, and during installation, the adjacent arc-extinguishing grid plates 1 are turned over up and down as shown in fig. 3, so that the manufacturing cost is saved.
The arc extinguish chamber structure of the circuit breaker is applied to the circuit breaker, and can be as shown in fig. 5, and comprises a shell component, a movable contact 3, a fixed contact 4, a movable contact arc striking plate 5 and a fixed contact arc striking plate 6 which are positioned in an inner cavity of the shell component, wherein the fixed contact 4 is arranged close to one side of an arc inlet of a plurality of arc extinguishing grid plates 1, the fixed contact arc striking plate 6 is connected with the fixed contact 4, an extending part of the fixed contact arc striking plate is arranged close to one end of a fan-shaped area formed by the arc extinguishing grid plates 1, the movable contact arc striking plate 5 is arranged close to a breaking position of the movable contact 3, and the extending part of the movable contact arc striking plate is arranged close to the other end of the fan-shaped area formed by the arc extinguishing grid plates 1.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.
Claims (10)
1. The utility model provides an arc control device of miniature circuit breaker, includes the explosion chamber, the explosion chamber includes arc extinguishing bars piece (1) that a plurality of intervals set up and fixed plate (2) that are used for fixed a plurality of arc extinguishing bars piece (1), fixed plate (2) are including setting up two installation curb plates (201) in a plurality of arc extinguishing bars piece (1) both sides, its characterized in that: the arc-extinguishing grid pieces (1) are distributed in a sector shape, wherein any two adjacent arc-extinguishing grid pieces (1) are arranged in an inclined mode.
2. An arc extinguishing apparatus of a small-sized circuit breaker according to claim 1, wherein: wherein any two adjacent arc extinguishing grid pieces (1) are arranged at the same inclined included angle.
3. An arc extinguishing apparatus of a small-sized circuit breaker according to claim 1 or 2, wherein: the connecting lines of one ends of the arc extinguishing grid pieces (1) far away from the arc inlet are smooth arcs.
4. An arc extinguishing apparatus of a small-sized circuit breaker according to claim 3, wherein: the fixed plate (2) comprises a connecting plate (202) which is located at one end, far away from an electric arc inlet, of the arc extinguishing grid pieces (1), the connecting plate (202) is fixedly connected with the two mounting side plates (201), and the connecting plate (202) is an arc-shaped plate.
5. An arc extinguishing apparatus of a small-sized circuit breaker according to claim 4, wherein: the arc extinguishing grid plate is characterized in that a slot is formed in the inner side wall of the mounting side plate (201), one end, close to an arc inlet, of the slot is an opening, and the edges of two sides of the arc extinguishing grid plate (1) are limited in the slot.
6. An arc extinguishing apparatus of a small-sized circuit breaker according to claim 5, wherein: the arc extinguishing grid piece (1) is characterized in that positioning blocks (101) are protruded from edges of two sides of the arc extinguishing grid piece, a side face, away from an arc inlet, of each positioning block (101) is a guide inclined plane (102), a positioning hole (203) is formed in each mounting side plate (201), and the positioning blocks (101) are in plug-in fit with the positioning holes (203).
7. An arc extinguishing apparatus of a small-sized circuit breaker according to claim 4, wherein: the connecting plate (202) is provided with a plurality of air outlets (204).
8. An arc extinguishing apparatus of a small-sized circuit breaker according to claim 3, wherein: one side of the arc extinguishing grid plate (1) corresponding to the arc inlet is provided with a V-shaped notch (103).
9. An arc extinguishing apparatus of a small-sized circuit breaker according to claim 8, wherein: the inner end of the V-shaped notch (103) extends inwards to form a strip-shaped slot (104) which is obliquely arranged relative to the width dimension central line L of the arc-extinguishing grid plate (1), and the strip-shaped slots (104) of each adjacent arc-extinguishing grid plate (1) are respectively obliquely and alternately arranged upwards and downwards.
10. An arc extinguishing apparatus of a small-sized circuit breaker according to claim 9, wherein: the arc-extinguishing grid plates (1) are identical in shape, the arc-extinguishing grid plates (1) are provided with an upper limiting fixture block (105) and a lower limiting fixture block (106), and the upper limiting fixture block (105) and the lower limiting fixture block (106) are different in length; the inner side walls of the installation side plates (201) are respectively provided with a first limit clamping groove (205) and a second limit clamping groove (206) which are matched with the upper limit clamping block (105) and the lower limit clamping block (106) in a plugging and matching mode, and the first limit clamping groove (205) and the second limit clamping groove (206) of one installation side plate (201) are respectively arranged opposite to the second limit clamping groove (206) and the first limit clamping groove (205) of the other installation side plate (201) so as to fix arc-extinguishing grid pieces with the same shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121331575.3U CN214898309U (en) | 2021-06-15 | 2021-06-15 | Arc extinguishing device of miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121331575.3U CN214898309U (en) | 2021-06-15 | 2021-06-15 | Arc extinguishing device of miniature circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214898309U true CN214898309U (en) | 2021-11-26 |
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ID=78904993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121331575.3U Active CN214898309U (en) | 2021-06-15 | 2021-06-15 | Arc extinguishing device of miniature circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214898309U (en) |
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2021
- 2021-06-15 CN CN202121331575.3U patent/CN214898309U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 325000 Wenzhou Bridge Industrial Park, Beibeixiang Town, Yueqing City, Wenzhou City, Zhejiang Province Patentee after: Zhejiang Benyi New Energy Co.,Ltd. Address before: 325600 Daqiao Industrial Zone, beibaixiang Town, Yueqing City, Wenzhou City, Zhejiang Province Patentee before: ZHEJIANG BENYI ELECTRICAL Co.,Ltd. |
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| CP03 | Change of name, title or address |