CN202549756U - Micro direct current breaker - Google Patents
Micro direct current breaker Download PDFInfo
- Publication number
- CN202549756U CN202549756U CN2012201632908U CN201220163290U CN202549756U CN 202549756 U CN202549756 U CN 202549756U CN 2012201632908 U CN2012201632908 U CN 2012201632908U CN 201220163290 U CN201220163290 U CN 201220163290U CN 202549756 U CN202549756 U CN 202549756U
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- flash barrier
- moving contact
- arc
- pole piece
- contact
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Abstract
The utility model discloses a micro direct current breaker. The micro direct current breaker comprises an upper cover, a base, a contact system, an arc extinguishing system and an arc blowing system, wherein the upper cover and the base form a housing; the contact system is provided with a movable contact and a static contact; the arc extinguishing system is provided with an arc extinguishing chamber; the arc blowing system is used for introducing an electric arc produced between the movable contact and the static contact into the arc extinguishing chamber; the arc blowing system comprises an upper flash barrier, an lower flash barrier, an upper iron pole piece and a lower iron pole piece; the upper flash barrier and the lower flash barrier are respectively arranged at the corresponding positions of the upper cover and the base; the upper iron pole piece is arranged between the upper flash barrier and the upper cover; the lower iron pole piece is arranged between the lower flash barrier and the base; the upper iron pole piece and the lower iron pole piece made from a ferrite; and the magnetic poles of the inner sides of the upper iron pole piece and the lower iron pole piece are opposite. The micro direct current breaker has the advantages that the structure is reasonable and the arc extinguishing effect is good.
Description
Technical field
The utility model belongs to the breaker structure design field, is specifically related to a kind of minisize dc circuit breaker.
Background technology
The minisize dc circuit breaker is a kind of appliance switch that is widely used in the direct current network; When overload or short trouble occurring in the circuit; It can play disconnection by the effect of protective circuit, and it comprises plastic casing and is arranged on contact arc-extinguishing system, operating mechanism and the release in the plastic casing.
Because direct current is different with alternating current; Galvanic size of current and direction are invariable usually; This just causes more difficult being extinguished of electric arc of breaking off time-division outage stream at the dynamic and static contact of dc circuit breaker, the electric arc that particularly produces at the bigger fault current of disjunction.Therefore, traditional dc circuit breaker ubiquity breaking capacity is poor, the defective that electrical endurance is short.
Above-mentioned deficiency to traditional dc circuit breaker existence; Present common way is in the disjunction zone of fixed contact and moving contact the arc blow-out system to be set; This arc blow-out system is made up of two permanent magnets that are separately positioned on plastics drain pan and loam cake; The action of a magnetic field that the electric arc that between moving contact and fixed contact, produces is produced by two permanent magnets is gone forward side by side and is carried out arc extinguishing into arc control device and leave voltage contact area fast.The arc quenching effect of the dc circuit breaker on the right existing market is still not remarkable, but also has improvements.
Summary of the invention
The purpose of the utility model provides a kind of rational in infrastructure and have a minisize dc circuit breaker of better arc quenching effect.
The technical scheme that realizes the utility model purpose is:
A kind of minisize dc circuit breaker, the arc blow-out system that comprises loam cake and base, the contact system that is provided with moving contact and fixed contact that constitutes housing, the arc quenching system that is provided with arc control device and the electric arc that produces between moving contact and the fixed contact introduced arc control device; Said arc blow-out system comprise the last flash barrier and the following flash barrier of the correspondence position that is installed in loam cake and base respectively and be arranged on flash barrier and loam cake between upper pole piece, be arranged on down the lower magnetic pole sheet between flash barrier and the base; Said upper pole piece and lower magnetic pole sheet adopt ferrite process and the magnetic pole of upper pole piece and lower magnetic pole sheet medial surface opposite.
In the technique scheme; The relevant position of the inwall of said loam cake and base is provided with groove; Be provided with protruding limited post in each groove; Said to go up flash barrier suitable with the shape of respective slot with the shape of following flash barrier, which is provided with spacing hole, inserts through each limited post and will go up being installed in each respective slot of flash barrier and following flash barrier in the spacing hole of correspondence.
In the technique scheme, the lateral surface of said upper pole piece is bonding through the inwall of adhesive and loam cake, and the medial surface of said upper pole piece is bonding through the lateral surface of adhesive and last flash barrier; The lateral surface of said lower magnetic pole sheet is bonding through the inwall of adhesive and base, and the medial surface of said lower magnetic pole sheet is bonding with the lateral surface of following flash barrier through adhesive.
In the technique scheme, said fixed contact is provided with fixed contact, and said moving contact is provided with moving contact; Being shaped as of said fixed contact is square or circular, and its side near moving contact is plane or protruding arcwall face, and said moving contact is protruding arcwall face near a side of fixed contact, and the dual-side wall of said moving contact all stretches out the dual-side wall of moving contact.
In the technique scheme, moving contact be provided with moving contact one side below be provided with the breach of circular arc so that the electric arc that produces between moving contact and the fixed contact gets into arc quenching system.
The utlity model has positive effect:
The arc blow-out system of the dc circuit breaker in the utility model comprise the last flash barrier and the following flash barrier of the correspondence position that is installed in loam cake and base respectively and be arranged on flash barrier and loam cake between upper pole piece, be arranged on down the lower magnetic pole sheet between flash barrier and the base; Said upper pole piece and lower magnetic pole sheet adopt ferrite process and the magnetic pole of upper pole piece and lower magnetic pole sheet medial surface opposite; Owing to adopt the said structure setting; Than traditional minisize dc circuit breaker, the structure of the minisize dc circuit breaker in the utility model is more reasonable, and has arc quenching effect preferably; Compare with the lower magnetic pole sheet with the upper pole piece that other materials is processed, adopt the cost performance of Ferrite Material higher.
Description of drawings
Fig. 1 is a kind of forward view of minisize dc circuit breaker in the utility model;
Fig. 2 removes a kind of structural representation behind the loam cake for Fig. 1;
Fig. 3 is a kind of cutaway view after dissecing along the A-A line among Fig. 1;
Fig. 4 is the internal structure sketch map of base in the utility model;
Fig. 5 is a kind of front view of moving contact in the utility model;
Fig. 6 is the left view of Fig. 5;
Fig. 7 is a kind of structural representation of Fig. 5 during from another viewed;
Fig. 8 is a kind of structural representation of the lower magnetic pole sheet in the utility model;
Reference numeral shown in the figure is: 1-housing, 11-loam cake, 12-base, 2-contact system, 21-moving contact; The 22-fixed contact, 23-fixed contact, 24-moving contact, 25-breach, 3-arc quenching system; The 31-arc control device, 4-arc blow-out system, the last flash barrier of 41-, flash barrier under the 42-; The 43-upper pole piece, 44-lower magnetic pole sheet, 5-groove, 6-limited post.
Embodiment
(embodiment 1)
See Fig. 1 to Fig. 8, shown a kind of embodiment in the utility model.Wherein, Fig. 1 is a kind of forward view of minisize dc circuit breaker in the utility model; Fig. 2 removes a kind of structural representation behind the loam cake for Fig. 1; Fig. 3 is a kind of cutaway view after dissecing along the A-A line among Fig. 1; Fig. 4 is the internal structure sketch map of base in the utility model; Fig. 5 is a kind of front view of moving contact in the utility model; Fig. 6 is the left view of Fig. 5; Fig. 7 is a kind of structural representation of Fig. 5 during from another viewed; Fig. 8 is a kind of structural representation of the lower magnetic pole sheet in the utility model.
A kind of minisize dc circuit breaker; Like Fig. 1, Fig. 2 and shown in Figure 3, the arc blow-out system 4 that it comprises loam cake 11 and base 12, the contact system 2 that is provided with moving contact 21 and fixed contact 22 that constitutes housing 1, the arc quenching system 3 that is provided with arc control device 31 and the electric arc that produces between moving contact 21 and the fixed contact 22 is introduced arc control device 31; Said arc blow-out system 4 comprise the last flash barrier 41 and the following flash barrier 42 of the correspondence position that is installed in loam cake 11 and base 12 respectively and be arranged on flash barrier 41 and loam cake 11 between upper pole piece 43, be arranged on down the lower magnetic pole sheet 44 between flash barrier 42 and the base 12; The said flash barrier 41 of going up adopts the melamino-formaldehyde fiberglass plastic to process with following flash barrier 42; Said upper pole piece 43 and lower magnetic pole sheet 44 adopt ferrites process and upper pole piece 43 opposite with the magnetic pole of lower magnetic pole sheet 44 medial surfaces, the concrete magnetic pole of upper pole piece 43 and lower magnetic pole sheet 44 medial surfaces is relevant with the polarity of importing power supply.The shape of the upper pole piece 43 in the present embodiment and the shape of lower magnetic pole sheet 44 are identical, and its shape is as shown in Figure 8.
Said loam cake 11 is provided with groove 5 with the relevant position of the inwall of base 12; Be provided with protruding limited post 6 in each groove 5; Said to go up flash barrier 41 suitable with the shape of respective slot 5 with the shape of following flash barrier 42, which is provided with spacing hole, inserts through each limited post 6 and will go up being installed in each respective slot 5 of flash barrier 41 and following flash barrier 42 in the spacing hole of correspondences; The structure of base 12 is referring to Fig. 4, and loam cake 11 is similar with the internal structure of base.
The lateral surface of said upper pole piece 43 is bonding through the inwall of adhesive and loam cake 11, and the medial surface of said upper pole piece 43 is bonding through the lateral surface of adhesive and last flash barrier 41; The lateral surface of said lower magnetic pole sheet 44 is bonding through the inwall of adhesive and base 12, and the medial surface of said lower magnetic pole sheet 44 is bonding with the lateral surface of following flash barrier 42 through adhesive.
Said fixed contact 22 is provided with fixed contact 23, and said moving contact 21 is provided with moving contact 24; Being shaped as of said fixed contact 23 is square or circular; Its side near moving contact 24 is the plane; Side near moving contact 24 also can be protruding arcwall face; Said moving contact 24 is protruding arcwall face near a side of fixed contact 23, and the dual-side wall of said moving contact 24 all stretches out the dual-side wall of moving contact 21.Referring to accompanying drawing 5, moving contact 21 be provided with moving contact 24 1 sides below be provided with the breach 25 of circular arc so that the electric arc that produces between moving contact 21 and the fixed contact 22 gets into arc quenching system 3.
Obviously, the foregoing description of the utility model only be for explain clearly that the utility model does for example, and be not to be qualification to the execution mode of the utility model.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all execution modes.And conspicuous variation that these connotations that belong to the utility model are extended out or change still belong to the protection range of the utility model.
Claims (5)
1. minisize dc circuit breaker comprises loam cake (11) and base (12), the contact system (2) that is provided with moving contact (21) and fixed contact (22) that constitutes housing (1), the arc quenching system (3) that is provided with arc control device (31) and with the arc blow-out system (4) of the electric arc introducing arc control device (31) of generation between moving contact (21) and the fixed contact (22);
It is characterized in that: said arc blow-out system (4) comprise the last flash barrier (41) and the following flash barrier (42) of the correspondence position that is installed in loam cake (11) and base (12) respectively and be arranged on flash barrier (41) and loam cake (11) between upper pole piece (43), be arranged on down the lower magnetic pole sheet (44) between flash barrier (42) and the base (12); Said upper pole piece (43) and lower magnetic pole sheet (44) adopt ferrite process and upper pole piece (43) opposite with the magnetic pole of lower magnetic pole sheet (44) medial surface.
2. minisize dc circuit breaker according to claim 1; It is characterized in that: said loam cake (11) is provided with groove (5) with the relevant position of the inwall of base (12); Be provided with protruding limited post (6) in each groove (5); The shape of said upward flash barrier (41) and following flash barrier (42) and the shape of respective slot (5) are suitable, which is provided with spacing hole, are installed in each respective slot (5) with following flash barrier (42) through going up flash barrier (41) in the corresponding spacing hole of each limited post (6) insertion.
3. minisize dc circuit breaker according to claim 2; It is characterized in that: the lateral surface of said upper pole piece (43) is bonding through the inwall of adhesive and loam cake (11), and the medial surface of said upper pole piece (43) is bonding through the lateral surface of adhesive and last flash barrier (41);
The lateral surface of said lower magnetic pole sheet (44) is bonding through the inwall of adhesive and base (12), and the medial surface of said lower magnetic pole sheet (44) is bonding with the lateral surface of following flash barrier (42) through adhesive.
4. minisize dc circuit breaker according to claim 3 is characterized in that: said fixed contact (22) is provided with fixed contact (23), and said moving contact (21) is provided with moving contact (24); Being shaped as of said fixed contact (23) is square or circular; Its side near moving contact (24) is plane or protruding arcwall face; Said moving contact (24) is protruding arcwall face near a side of fixed contact (23), and the dual-side wall of said moving contact (24) all stretches out the dual-side wall of moving contact (21).
5. minisize dc circuit breaker according to claim 4; It is characterized in that: be provided with the breach (25) of circular arc in the below that moving contact (21) is provided with moving contact (24) one sides, so that the electric arc that produces between moving contact (21) and the fixed contact (22) gets into arc quenching system (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201632908U CN202549756U (en) | 2012-04-17 | 2012-04-17 | Micro direct current breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201632908U CN202549756U (en) | 2012-04-17 | 2012-04-17 | Micro direct current breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202549756U true CN202549756U (en) | 2012-11-21 |
Family
ID=47170345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201632908U Expired - Fee Related CN202549756U (en) | 2012-04-17 | 2012-04-17 | Micro direct current breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202549756U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105826143A (en) * | 2016-05-31 | 2016-08-03 | 乐清市也为电气有限公司 | Micro breaker |
-
2012
- 2012-04-17 CN CN2012201632908U patent/CN202549756U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105826143A (en) * | 2016-05-31 | 2016-08-03 | 乐清市也为电气有限公司 | Micro breaker |
| CN105826143B (en) * | 2016-05-31 | 2019-02-15 | 乐清市也为电气有限公司 | A kind of miniaturization breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20210417 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |