CN202473793U - Magnet yoke, assembly and breaker - Google Patents
Magnet yoke, assembly and breaker Download PDFInfo
- Publication number
- CN202473793U CN202473793U CN2012200290829U CN201220029082U CN202473793U CN 202473793 U CN202473793 U CN 202473793U CN 2012200290829 U CN2012200290829 U CN 2012200290829U CN 201220029082 U CN201220029082 U CN 201220029082U CN 202473793 U CN202473793 U CN 202473793U
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- China
- Prior art keywords
- magnetic field
- extension
- yoke
- fixed contact
- repulsion force
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Abstract
The utility model discloses a magnet yoke used for cooperating with a static contact of a breaker. The magnet yoke comprises: a first structure configured to constrain a magnetic field which is generated by the static contact and is favorable for enhancing electric expulsive force so as to enhance the favorable magnetic field; and a second structure configured to constrain a expulsive force that is generated by the static contact and is unfavorable for enhancing electric expulsive force so as to minimize influence of the unfavorable magnetic field upon the electric expulsive force, wherein the first structure and the second structure are connected with each other. The utility model also discloses an assembly comprising a static contact and a magnet yoke, and a breaker comprising the assembly. The magnet yoke of the utility model has a structure which corresponds to the current path of the static contact, thereby enhancing the favorable magnetic field and weakening the unfavorable magnetic field to contact portions. The magnet yoke integrates a guide arc angle, thereby reducing the number of components and minimizing complexity of the structure. Moreover, the magnet yoke is convenient to mount.
Description
Technical field
The utility model relates to a kind of yoke, comprises the assembly of this yoke and the circuit breaker that comprises this assembly.
Background technology
For breaker of plastic casing, connecting-disconnecting function is very important.Comprise arc control device, fixed contact and moving contact in the circuit breaker.Wherein, during connection, moving contact contacts with silver contact 40.When being short-circuited, moving contact is opened under the effect of electrodynamic repulsion force and aerodynamic force fast.Electrodynamic repulsion force influences the opening speed of moving contact, so be necessary very much to strengthen electrodynamic repulsion force.
Existing fixed contact 20 is as shown in Figure 1 with the assembly that yoke 10 is formed, and wherein, yoke 20 is fixing with fixed contact 20 through rivet 30.As shown in Figure 2, fixed contact 10 is formed with a plurality of current paths.Wherein, path 1 produces strengthening the favourable magnetic field of electrodynamic repulsion force, path 2,3 and 4 then generation to strengthening the disadvantageous magnetic field of electrodynamic repulsion force.Therefore, expectation can strengthen the magnetic field that path 1 produces, and reduces the influence in the magnetic field of path 2,3 and 4 generations.
Yoke 10 (as shown in Figure 1) is the parts of being processed by steel, can the concentration magnetic line of force, thus increase magnetic density, promptly strengthen magnetic field.Favourable magnetic field.Yet existing yoke is merely able to strengthen favourable magnetic field, and can not weaken disadvantageous magnetic field.
In addition, as illustrated in fig. 1 and 2, fixed contact 20 is provided with silver contact 40.When this moving contact was closed, this silver contact 40 contacted with this moving contact.In order to protect silver contact 40, an additional components (not shown) is set near silver contact 40 in the prior art, be called arc leading angle, thereby it can attract electric arc protection silver contact.In the prior art, arc leading angle is a part independently.
Summary of the invention
The purpose of the utility model provides a kind of yoke, and it can strengthen the favourable magnetic field of contact portion and can weaken disadvantageous magnetic field,
Thereby the further purpose of the utility model is to integrate arc leading angle to reduce number of parts.
According to above purpose, the technical scheme of the utility model is following:
A kind of yoke is used for cooperating with the fixed contact of circuit breaker, and this yoke comprises: first structure is configured to retrain that said fixed contact produces to strengthening the favourable magnetic field of electrodynamic repulsion force to strengthen said favourable magnetic field; Second structure is configured to retrain that said fixed contact produces to strengthening the disadvantageous magnetic field of electrodynamic repulsion force to reduce the influence of said disadvantageous magnetic field to said electrodynamic repulsion force.Wherein, this first structure and this second structure interconnect.
Wherein, Said second structure comprises second extension and the crooked connecting portion that is connected with this second extension; Said first structure is first extension that is connected with this bending connecting portion, and wherein said first extension, said second extension and said crooked connecting portion are one-body molded.
This yoke also comprises the one-body molded terminal arc leading angle of said first extension that is located at.One side of the silver contact of this arc leading angle on fixed contact has extended to form a clamping part.
According to the utility model on the other hand; A kind of assembly; Comprise fixed contact and yoke; Said fixed contact comprise cause to the first that strengthens the favourable magnetic field of electrodynamic repulsion force with cause strengthening the second portion in the disadvantageous magnetic field of said electrodynamic repulsion force; This yoke assembly comprise corresponding with this first's shape and first structure of fitting with it and with this second portion shape second structure corresponding and that fit with it, wherein first structure construction is said favourable magnetic field strengthening said favourable magnetic field, second structure construction for the disadvantageous magnetic field of constraint fixed contact generation to reduce of the influence of said disadvantageous magnetic field to said electrodynamic repulsion force.
Wherein, Said second structure comprises second extension and the crooked connecting portion that is connected with this second extension; Said first structure is first extension that is connected with this bending connecting portion, and wherein said first extension, said second extension and said crooked connecting portion are one-body molded.
This yoke also comprises the one-body molded terminal arc leading angle of said first extension that is located at.One side of the silver contact of this arc leading angle on fixed contact has extended to form a clamping part.
According to the another aspect of the utility model, a kind of circuit breaker comprises arc control device, and this circuit breaker comprises the aforesaid assembly that is arranged in these arc control device.
Through above-mentioned technical scheme, the utility model obtains following technique effect: have and the corresponding structure of fixed contact current path, thereby strengthen disadvantageous magnetic field is weakened in the favourable magnetic field of contact portion; Thereby having integrated arc leading angle reduces number of parts, reduces structural complexity; Easy for installation.
Description of drawings
Fig. 1 is the assembling sketch map of existing fixed contact and yoke.
Fig. 2 is the sketch map of fixed contact.
Fig. 3 is the sketch map according to the yoke of an embodiment of the utility model.
Fig. 4 is the assembling sketch map of fixed contact of yoke and Fig. 2 of Fig. 3.
Reference numeral
1,2,3,4 current paths
10 yokes, 20 fixed contacts, 30 rivets, 40 silver contacts
21 bottoms, 22 transition parts, 23 contact sites
The assembly of 100 fixed contacts and yoke
200 yokes
210 second extensions, 220 crooked connecting portion 230 first extensions 240 arc leading angles 250 clamping parts
Embodiment
Preferred embodiment below in conjunction with the utility model is described the utility model.Many concrete details have been enumerated in the following description.Yet, it will be appreciated by those skilled in the art that the utility model also can not adopt some in these details or all realizes.Under the situation about having, known technology is not described to avoid unnecessary obscuring.
As previously mentioned, be formed with a plurality of current paths on the fixed contact 20.These current paths depend on the structure of fixed contact 20, and therefore, for the structure except shown in Fig. 2, the current path on the fixed contact 20 also maybe be different.These current paths flow to according to it can produce different magnetic field; Some is favourable (being called " favourable magnetic field ") for strengthening the said electrodynamic repulsion force that is used to break off moving contact, and some then is unfavorable for strengthening such electrodynamic repulsion force (being called " disadvantageous magnetic field ").For example, as previously mentioned, on the fixed contact 20 of Fig. 2, the magnetic field that current path 1 causes is favourable magnetic field, and the magnetic field that current path 2-4 causes is disadvantageous magnetic field.It should be noted that fixed contact for other shapes or structure, judge the magnetic field that current path caused on it whether favourable to said electrodynamic repulsion force be the common practise of this area.
Thus; It will be appreciated by those skilled in the art that; Though the structure of fixed contact 20 can be various, always comprise favourable current path and unfavorable current path, and then fixed contact comprises first that causes favourable magnetic field and the second portion that causes disadvantageous magnetic field.On the fixed contact with reference to Fig. 2, the contact site 23 that forms current path 1 is exactly the first that causes favourable magnetic field, and the transition part 22 of formation current path 2 is exactly the second portion that causes disadvantageous magnetic field with the bottom 21 that forms current path 3,4.Contact site 23 is provided with silver contact 40.
According to the common practise of this area, yoke can make magnetic field concentration, thereby increases magnetic density.Then in the face of the utility model technical problem to be solved, promptly need strengthen favourable magnetic field and weaken disadvantageous magnetic field, can be through concentrating favourable magnetic field, improve its density, thus improve electrodynamic repulsion force, promote the cutout ability.And through concentrating disadvantageous magnetic field, the feasible disadvantageous magnetic field that is produced reduces its adverse effect away from the silver contact 40 of fixed contact 20.
Particularly; For the fixed contact shown in Fig. 2; Can be through the density that yoke strengthens the favourable magnetic field that is produced be set on current path 1; Through forming near the structure of current path 2-4 in that disadvantageous magnetically confined that yoke will produce is set on the current path 2-4, reduce influence to silver contact 40.
Thus, the yoke of the utility model comprises: first structure is configured to retrain the favourable magnetic field that fixed contact produces; Second structure is configured to retrain the disadvantageous magnetic field that fixed contact produces, and this second structure is connected with this first structure.
According to above-mentioned principle; As shown in Figure 3; A kind of yoke 200 that is suitable for fixed contact 20 shown in Figure 2, it has first extension 230 and second extension 210, and this first extension 230 links to each other through crooked connecting portion 220 with second extension 210; Be provided with and this first extension 230 integrated arc leading angles 240 at these first extension, 230 ends, this arc leading angle 240 has extended to form clamping part 250 towards a side of this silver contact 40.Among Fig. 3, the various piece of yoke 200 is integrated, for example, utilizes punching press one-body molded.Certainly, also can be parts separately, be integrally formed through modes such as for example welding.
As shown in Figure 4, during use, second extension 210 is fitted with this bottom 23, and this bending connecting portion 220 is fitted with this transition part 22, and this first extension 230 is fitted with this contact site 23.Obviously, the disadvantageous magnetic field of second extension 210 and these these fixed contact 20 generations of bending connecting portion 220 constraints, and the favourable magnetic field that these first extension, 230 these fixed contacts of constraint produce.Thus, yoke 200 can make owing to the magnetic field concentration of current path generation on fixed contact 20 each several parts, thereby increase the magnetic density of part separately.Like this, both strengthened the density in favourable magnetic field,, reduced adverse effect silver contact 40 by because retrained disadvantageous magnetic field.
As shown in Figure 3, the arc leading angle 240 that forms in the end of this first extension 230 is used to attract electric arc, thus the silver contact 40 of protection fixed contact 20.The position that it will be apparent to one skilled in the art that arc leading angle 240 can change according to concrete application is different, as long as arc leading angle can be protected silver contact near being positioned at this silver contact 40 in use.
This clamping part 250 that forms on the arc leading angle 240 is to be used for yoke 200 and this fixed contact 20 are fixed on the one hand, also constitutes the extension of arc leading angle 240 to silver contact 40 on the other hand, so that more near silver contact 40, thereby protects silver contact better.
During installation, yoke 200 is slided into this fixed contact 20 from the side, clamping part 250 is stuck in therebetween with the contact site 23 of this first extension 230 with fixed contact 20, and is as shown in Figure 4.
Another execution mode at the utility model; A kind of assembly that comprises fixed contact and yoke; Said fixed contact comprise cause to the first in the favourable magnetic field of electrodynamic repulsion force with cause second portion to the disadvantageous magnetic field of electrodynamic repulsion force; This yoke assembly comprises first structure corresponding with this first's shape and that fit with it and second structure corresponding and that fit with it with this second portion shape; Wherein first structure construction is said favourable magnetic field strengthening said favourable magnetic field, and the disadvantageous magnetic field that second structure construction produces for the constraint fixed contact is to reduce the influence of said disadvantageous magnetic field to said electrodynamic repulsion force.Particularly, assembly 300 shown in Figure 4 comprises fixed contact shown in Figure 2 and yoke shown in Figure 3.
In the another execution mode of the utility model, a kind of circuit breaker comprises arc control device, and this circuit breaker comprises the aforementioned components that is arranged in these arc control device.
As previously mentioned, though fixed contact can have other shape, always comprise architectural feature that causes favourable magnetic field and the architectural feature that causes disadvantageous magnetic field.The yoke of the utility model always comprises first structure corresponding with the architectural feature that causes favourable magnetic field and second structure corresponding with the architectural feature that causes disadvantageous magnetic field; Wherein, The favourable magnetic field that first structure construction produces for the constraint fixed contact, the disadvantageous magnetic field that second structure construction produces for the constraint fixed contact.Therefore, though in other execution mode, the shape of yoke maybe be different, yet it is also within the protection range of the utility model, as long as it comprises aforesaid first and second structures.
In the prior art, arc leading angle and yoke are parts independently, and it increases structure and process complexity.In the utility model, arc leading angle and yoke are integrally formed, and can avoid aforementioned disadvantages.And, through forming clamping part, avoid the use of extra rivet yoke and fixed contact are fixed, reduce structure complexity, and installation is also convenient.
Combine embodiment that the utility model is described in detail above.Yet, it will be appreciated by those skilled in the art that in the scope of the utility model, also to have some modifications and equivalent way.Therefore, the claim of the utility model should be interpreted as modification and the equivalent way that comprises that all are such.
Claims (9)
1. a yoke is used for cooperating with the fixed contact (20) of circuit breaker, it is characterized in that this yoke (200) comprising:
First structure is configured to retrain that said fixed contact produces to strengthening the favourable magnetic field of electrodynamic repulsion force to strengthen said favourable magnetic field;
Second structure is configured to retrain that said fixed contact produces to strengthening the disadvantageous magnetic field of said electrodynamic repulsion force to reduce the influence of said disadvantageous magnetic field to said electrodynamic repulsion force;
Wherein, this first structure and this second structure interconnect.
2. yoke according to claim 1; It is characterized in that; Said second structure comprises second extension (210) and the crooked connecting portion (220) that is connected with this second extension (210); Said first structure is first extension (230) that is connected with this bending connecting portion (220), and wherein said first extension, said second extension and said crooked connecting portion are one-body molded.
3. yoke according to claim 2 is characterized in that, this yoke also comprises the one-body molded terminal arc leading angle (240) of said first extension (230) that is located at.
4. yoke according to claim 3 is characterized in that, a side of the silver contact (40) of this arc leading angle (240) on fixed contact (20) has extended to form a clamping part (250).
5. assembly; Comprise fixed contact and yoke; Said fixed contact comprise cause to the first that strengthens the favourable magnetic field of electrodynamic repulsion force with cause strengthening the second portion in the disadvantageous magnetic field of said electrodynamic repulsion force; It is characterized in that; This yoke assembly comprise corresponding with this first's shape and first structure of fitting with it and with this second portion shape second structure corresponding and that fit with it, wherein first structure construction is said favourable magnetic field strengthening said favourable magnetic field, second structure construction for the disadvantageous magnetic field of constraint fixed contact generation to reduce of the influence of said disadvantageous magnetic field to said electrodynamic repulsion force.
6. assembly according to claim 5; It is characterized in that; Said second structure comprises second extension (210) and the crooked connecting portion (220) that is connected with this second extension (210); Said first structure is first extension (230) that is connected with this bending connecting portion (220), and wherein said first extension, said second extension and said crooked connecting portion are one-body molded.
7. assembly according to claim 6 is characterized in that, this yoke also comprises the one-body molded terminal arc leading angle (240) of said first extension (230) that is located at.
8. assembly according to claim 7 is characterized in that, a side of the silver contact (40) of this arc leading angle (240) on fixed contact (20) has extended to form a clamping part (250).
9. a circuit breaker comprises arc control device, it is characterized in that, this circuit breaker comprise be arranged in these arc control device like each described assembly of claim 5-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200290829U CN202473793U (en) | 2012-01-29 | 2012-01-29 | Magnet yoke, assembly and breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200290829U CN202473793U (en) | 2012-01-29 | 2012-01-29 | Magnet yoke, assembly and breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202473793U true CN202473793U (en) | 2012-10-03 |
Family
ID=46921936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200290829U Expired - Fee Related CN202473793U (en) | 2012-01-29 | 2012-01-29 | Magnet yoke, assembly and breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202473793U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064416A (en) * | 2013-03-21 | 2014-09-24 | 株式会社日立产机系统 | Circuit breaker |
-
2012
- 2012-01-29 CN CN2012200290829U patent/CN202473793U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064416A (en) * | 2013-03-21 | 2014-09-24 | 株式会社日立产机系统 | Circuit breaker |
| CN104064416B (en) * | 2013-03-21 | 2017-01-04 | 株式会社日立产机系统 | Circuit-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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20200129 |