CN215527514U - Magnetic blow-out structure of circuit breaker - Google Patents
Magnetic blow-out structure of circuit breaker Download PDFInfo
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- CN215527514U CN215527514U CN202121489155.8U CN202121489155U CN215527514U CN 215527514 U CN215527514 U CN 215527514U CN 202121489155 U CN202121489155 U CN 202121489155U CN 215527514 U CN215527514 U CN 215527514U
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- striking plate
- permanent magnet
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- circuit breaker
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Abstract
The utility model provides a magnetic blow structure of circuit breaker, it includes explosion chamber, moving contact and static contact joint and separation part are in the electric arc entrance of explosion chamber, the electric arc entrance of explosion chamber is located moving contact and static contact joint and separation part below have laid run-on plate, its characterized in that: the arc striking plate is located the position of the electric arc entrance of explosion chamber has laid magnetic conduction spare, the both sides arm of magnetic conduction spare is located the left and right sides of arc striking plate stands up relatively, the connecting portion of the both sides arm of magnetic conduction spare is located the back of arc striking plate, the permanent magnet equipment is in on the corresponding both sides arm of magnetic conduction spare. According to the utility model, the arc striking effect of the electric arc is enhanced by increasing the magnetic blow mode, especially aiming at the problem that the electric arc is easy to stay at the corner of a product, the magnetic blow strength of the electric arc at the corner is enhanced, so that the electric arc can quickly and smoothly enter an arc extinguishing chamber, and the arc extinguishing effect of the circuit breaker is improved.
Description
Technical Field
The utility model belongs to the technical field of low-voltage electric appliances, and particularly relates to a magnetic blow-out structure of a circuit breaker.
Background
The arc generated when the contacts of the traditional direct current circuit breaker are broken or combined is not easy to extinguish quickly, the breaking capacity of the circuit breaker is seriously delayed, the arc extinguishing mode is a common arc extinguishing mode that the generated arc is led into an arc extinguishing chamber through an arc striking sheet to extinguish the arc, but the defects of weak arc guidance, long arc extinguishing time, arc stagnation, poor arc extinguishing effect and the like exist in the prior art, the breaking capacity of the circuit breaker is not high, and if the arc cannot be extinguished in a short time all the time, serious accidents such as fire disasters can be caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that electric arcs generated when the existing circuit breakers are disconnected or combined cannot be extinguished in a short time, and provides a magnetic blow structure of the circuit breaker.
Technical scheme
In order to achieve the technical purpose, the magnetic blow structure of the circuit breaker provided by the utility model comprises an arc extinguish chamber, a moving contact and a static contact, wherein the joint and separation part of the moving contact and the static contact is positioned at an arc inlet of the arc extinguish chamber, and an arc striking plate is arranged at the arc inlet of the arc extinguish chamber below the joint and separation part of the moving contact and the static contact, and is characterized in that: the arc striking plate is located the position of the electric arc entrance of explosion chamber has laid magnetic conduction spare, the both sides arm of magnetic conduction spare is located the left and right sides of arc striking plate stands up relatively, the connecting portion of the both sides arm of magnetic conduction spare is located the back of arc striking plate, the permanent magnet equipment is in on the corresponding both sides arm of magnetic conduction spare.
Further, the permanent magnet group comprises a first permanent magnet and a second permanent magnet, and the opposite surface magnetic poles of the first permanent magnet and the second permanent magnet are opposite.
Furthermore, the first permanent magnet and the second permanent magnet are arranged on the inner sides of the two side arms of the magnetic conduction piece.
Further, the permanent magnet assembly is arranged at the position, close to the arc extinguish chamber, of the two side walls of the magnetic conduction piece.
Furthermore, two side arms and the connecting part of the magnetic conduction piece form a U shape.
Further, the striking plate still including extend to striking plate straight section portion of explosion chamber below, striking plate straight section portion is connected with the striking plate uphill section that is located explosion chamber electric arc entrance position, the upper end and the striking plate downhill path section of striking plate uphill section are connected.
Advantageous effects
According to the magnetic blow structure of the circuit breaker, the magnetic blow is increased by arranging the magnetic conduction piece and the permanent magnet at the arc inlet of the arc extinguish chamber, the arc striking effect of the arc is enhanced, particularly, the magnetic blow strength of the arc at the corner is enhanced aiming at the problem that the arc is easy to stay at the corner of a product (namely, the corner position where the straight section part of the arc strike plate is connected with the ascending section), so that the arc can quickly and smoothly enter the arc extinguish chamber, and the arc extinguish effect of the circuit breaker is improved.
Drawings
FIG. 1 is a perspective view of an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an embodiment of the present invention.
Fig. 3 is a cross-sectional view of an embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
Example 1
As shown in fig. 1 and 2, a magnetic blow structure of a circuit breaker includes an arc extinguish chamber 1, a moving contact 2, and a static contact 3, wherein an arc is generated when the moving contact 2 and the static contact 3 are connected and separated, and in order to introduce the arc into the arc extinguish chamber 1 for extinguishing, in the prior art, an arc striking plate 4 is arranged below the connection and separation part of the moving contact 2 and the static contact 3. In this embodiment, the area where the arc generated by the connection and separation of the moving contact 2 and the static contact 3 is located before entering the arc extinguishing chamber 1 is the arc inlet of the arc extinguishing chamber 1 in this embodiment, in order to enhance the magnetic blowing strength of the arc introduced into the arc extinguishing chamber 1, a magnetic conducting member 5 is distributed at the arc inlet of the arc extinguishing chamber 1 at the position of the arc striking plate 4, two side arms 5a and 5a ' of the magnetic conducting member 5 are located at the left and right sides of the arc striking plate 4 and stand opposite to each other, a connecting portion 5b of the two side arms 5a and 5a ' of the magnetic conducting member 5 is located at the back of the arc striking plate 4, a permanent magnet group 6 is installed on the two side arms 5a and 5a ' corresponding to the magnetic conducting member 5, in this embodiment, the permanent magnet group 6 is installed at the position of the two side walls of the magnetic conducting member close to the arc extinguishing chamber, by adopting this structure, the permanent magnet group 6 can be close to the corner of the arc striking plate 4, increasing the magnetic field at the corners. The permanent magnet group 6 is attached to the magnetic conduction piece 5, so that the magnetic field intensity in the magnetic conduction piece 5 is enhanced; and magnetic conduction piece 5 passes the 4 backs of striking plate, makes 4 back parts of striking plate magnetic field intensity also obtain the reinforcing, has played obvious reinforcing effect to 4 corners of striking plate magnetism simultaneously, then weakens the electric arc that forms in 4 corners of striking plate to improve circuit breaker life.
Specifically, as shown in fig. 1, the permanent magnet group 6 includes a first permanent magnet 6a and a second permanent magnet 6b, and the opposite surfaces of the first permanent magnet 6a and the second permanent magnet 6b have opposite magnetic poles in order to blow an arc into the arc extinguishing chamber. The first permanent magnet 6a and the second permanent magnet 6b are arranged on the inner sides of the two side arms 5a and 5 a' of the magnetic conduction member 5. In this embodiment, the two side arms 5a,5a 'and the connecting portion 5b of the magnetic conducting member 5 form a U shape, so that the connecting portion 5b penetrates through the back surface of the arc striking plate 4 and the permanent magnet group 6 to be attached to and installed on the two side arms 5a,5 a' of the magnetic conducting member 5. As shown in fig. 3, the arc striking plate 4 further includes an arc striking plate straight section 4a extending to the lower portion of the arc extinguishing chamber, the arc striking plate straight section 4a is connected with an arc striking plate upward slope section 4b located at an arc inlet of the arc extinguishing chamber, and the upper end of the arc striking plate upward slope section 4b is connected with an arc striking plate downward slope section 4 c.
According to the magnetic blow structure of the circuit breaker, the magnetic blow is increased by arranging the magnetic conduction piece and the permanent magnet at the arc inlet of the arc extinguish chamber, the arc striking effect of the arc is enhanced, particularly the magnetic blow strength of the arc at the corner is enhanced aiming at the problem that the arc is easy to stay at the corner of a product, so that the arc can quickly and smoothly enter the arc extinguish chamber, and the arc extinguish effect of the circuit breaker is improved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, those skilled in the art will appreciate that; the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. The utility model provides a magnetic blow structure of circuit breaker, it includes explosion chamber, moving contact and static contact joint and separation part are in the electric arc entrance of explosion chamber, the electric arc entrance of explosion chamber is located moving contact and static contact joint and separation part below have laid run-on plate, its characterized in that: the arc striking plate is located the position of the electric arc entrance of explosion chamber has laid magnetic conduction spare, the both sides arm of magnetic conduction spare is located the left and right sides of arc striking plate stands up relatively, the connecting portion of the both sides arm of magnetic conduction spare is located the back of arc striking plate, the permanent magnet equipment is in on the corresponding both sides arm of magnetic conduction spare.
2. A magnetic blow structure of a circuit breaker according to claim 1, characterized in that: the permanent magnet group comprises a first permanent magnet and a second permanent magnet, and the magnetic poles of the opposite surfaces of the first permanent magnet and the second permanent magnet are opposite.
3. A magnetic blow structure of a circuit breaker according to claim 2, characterized in that: the first permanent magnet and the second permanent magnet are arranged on the inner sides of the two side arms of the magnetic conduction piece.
4. A magnetic blow structure of a circuit breaker according to claim 1, characterized in that: the permanent magnet assembly is arranged at the position, close to the arc extinguish chamber, of the two side walls of the magnetic conduction piece.
5. A magnetic blow structure of a circuit breaker according to claim 1, characterized in that: the two side arms and the connecting part of the magnetic conduction piece form a U shape.
6. A magnetic blow structure of a circuit breaker according to claim 1, characterized in that: the arc striking plate further comprises an arc striking plate straight section part extending to the lower portion of the arc striking plate, the arc striking plate straight section part is connected with an arc striking plate ascending section located at an arc inlet of the arc striking plate, and the upper end of the arc striking plate ascending section is connected with an arc striking plate descending section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121489155.8U CN215527514U (en) | 2021-06-30 | 2021-06-30 | Magnetic blow-out structure of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121489155.8U CN215527514U (en) | 2021-06-30 | 2021-06-30 | Magnetic blow-out structure of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215527514U true CN215527514U (en) | 2022-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121489155.8U Active CN215527514U (en) | 2021-06-30 | 2021-06-30 | Magnetic blow-out structure of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215527514U (en) |
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2021
- 2021-06-30 CN CN202121489155.8U patent/CN215527514U/en active Active
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