CN220731441U

CN220731441U - Magnetic blow arc striking structure

Info

Publication number: CN220731441U
Application number: CN202322438581.4U
Authority: CN
Inventors: 郑建光; 王雪山
Original assignee: Zhejiang Etk Electric Co ltd
Current assignee: Zhejiang Etk Electric Co ltd
Priority date: 2023-09-08
Filing date: 2023-09-08
Publication date: 2024-04-05
Anticipated expiration: 2033-09-08

Abstract

The utility model discloses a magnetic blowing arc striking structure which comprises a fixed contact, wherein one end of the fixed contact is provided with a connecting part, the other end of the fixed contact is provided with a bending part, a fixed box is arranged on the fixed contact, a containing groove is formed in the fixed box, a plurality of magnetic blowing pieces are arranged in the containing groove, and an arc striking piece is arranged at the top of the bending part.

Description

Magnetic blow arc striking structure

Technical Field

The utility model relates to the technical field of circuit breakers, in particular to a magnetic blow-out striking structure.

Background

When breaking current, the plastic shell breaker separates the moving contact from the fixed contact to generate electric arc, the electric arc needs to be quickly transferred into the arc extinguishing chamber to extinguish the arc, and a magnetic blowing coil is usually arranged to generate a magnetic field to blow the electric arc into the arc extinguishing chamber.

At present, in a part of molded case circuit breaker, because of space limitation, a magnetic blowing coil cannot be arranged, a magnetic field is generated by current through a fixed contact to perform magnetic blowing, an arc striking sheet is arranged to guide an electric arc, but the intensity of the magnetic field generated by the fixed contact is weaker, so that the magnetic blowing effect is poor, and the arc extinguishing effect is general.

Disclosure of Invention

The present utility model is directed to a magnetic arc striking structure, which solves the above-mentioned problems of the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a magnetic blow arc striking structure, includes the static contact, the one end of static contact is equipped with connecting portion, the other end of static contact is equipped with the bending portion, install fixed box on the static contact, the inside of fixed box is equipped with the storage tank, be equipped with a plurality of magnetic blow pieces in the storage tank, the striking piece is installed at the top of bending portion.

As a preferable scheme of the utility model, the arc striking piece is connected with a first screw in a threaded manner, and a first screw hole matched with the first screw is formed in the bending part.

As a preferable scheme of the utility model, the top of the fixed box is provided with a groove matched with the striking plate.

As a preferable scheme of the utility model, the fixed box and the fixed contact are respectively provided with a second screw hole, and the second screw is connected with the second screw through the second screw.

As a preferable scheme of the utility model, the material of the arc striking plate is cold rolled steel, and the material of the magnetic blowing plate is silicon steel.

Compared with the prior art, the utility model has the beneficial effects that: the magnetic field intensity can be increased through the magnetic blowing piece, so that a better magnetic blowing effect is achieved, an arc extinguishing effect is enhanced, the magnetic blowing piece is fixed through the fixing box, the magnetic blowing piece is prevented from being separated from the fixed contact, and the magnetic blowing piece is ensured to be firmly installed.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

fig. 2 is an exploded view of the present utility model.

In the figure: 1. a stationary contact; 2. a bending portion; 3. a connection part; 4. an arc striking piece; 5. magnetic blowing sheet; 6. a fixed box; 7. a first screw; 8. a receiving groove; 9. a first screw hole; 10. a groove; 11. a second screw; 12. and a second screw hole.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 2, the present utility model provides a technical solution: the utility model provides a magnetic blowing striking structure, including static contact 1, the one end of static contact 1 is equipped with connecting portion 3, the other end of static contact 1 is equipped with flexion 2, flexion 2 is used for contacting with the moving contact, the electric current flows in from connecting portion 3, and flow to flexion 2, flow to the moving contact afterwards, install fixed box 6 on the static contact 1, fixed box 6 is used for playing the fixed effect to magnetic blowing piece 5, prevent that magnetic blowing piece 5 and static contact 1 from taking place the separation, the inside of fixed box 6 is equipped with accommodation groove 8, be equipped with a plurality of magnetic blowing pieces 5 in the accommodation groove 8, magnetic blowing piece 5 is used for increasing magnetic field strength, thereby reach better magnetic blowing effect, the reinforcing arc extinguishing effect, striking piece 4 is installed at the top of flexion 2, striking piece 4 is used for guiding the electric arc, guide the arc to the explosion chamber, the explosion chamber sets up in the top of striking piece 4, the explosion chamber is prior art, so not be specifically described.

Wherein, threaded connection has first screw 7 on the striking piece 4, and the inside of flexion 2 is equipped with first screw hole 9 with first screw 7 matched with, and first screw 7 is used for fixing striking piece 4 on flexion 2 with first screw hole 9 cooperation.

Wherein, the top of fixed box 6 is equipped with striking piece 4 matched with recess 10, and fixed box 6 can restrict striking piece 4, prevents that striking piece 4 from taking place the skew, makes striking piece 4 fixed more firm.

The fixed box 6 and the fixed contact 1 are respectively provided with a second screw hole 12, the second screw 11 is connected to the second screw hole 12 by a screw, and the second screw 11 and the second screw hole 12 are matched to fix the fixed box 6 on the fixed contact 1.

Wherein, the material of striking piece 4 is cold rolled steel, and the striking piece 4 still can adopt electrician's pure iron, and the striking effect is better, and the material of magnetic blow piece 5 is silicon steel, and the silicon steel can increase the magnetic field strength of inductance.

Specifically, during the use, the electric current flows in and flows to the bending part 2 from connecting portion 3, and the electric current flows and can produce the magnetic field, and when moving contact and fixed contact 1 separation, the department produces the electric arc at bending part 2, and under the magnetic field effect, the electric arc is blown into the explosion chamber along striking piece 4 motion to under the effect of magnetic blow piece 5, can increase magnetic field strength, reach better magnetic blow effect, reinforcing arc extinguishing effect.

In the description of the present utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "another end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby features defining "first," "second," "third," "fourth" may explicitly or implicitly include at least one such feature.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a magnetic blow striking structure, includes static contact (1), its characterized in that: the utility model discloses a fixed contact, including fixed contact (1), fixed contact, fixed box (6), connecting portion (3) are equipped with to the one end of fixed contact (1), the other end of fixed contact (1) is equipped with flexion (2), fixed box (6) inside is equipped with accommodation groove (8), be equipped with a plurality of magnetism in accommodation groove (8) and blow piece (5), arc striking piece (4) are installed at the top of flexion (2).

2. A magnetic blow-out structure according to claim 1, wherein: the arc striking piece (4) is connected with a first screw (7) in a threaded mode, and a first screw hole (9) matched with the first screw (7) is formed in the bending portion (2).

3. A magnetic blow-out structure according to claim 1, wherein: the top of the fixed box (6) is provided with a groove (10) matched with the arc striking piece (4).

4. A magnetic blow-out structure according to claim 1, wherein: the fixed box (6) and the fixed contact (1) are respectively provided with a second screw hole (12), and the second screws (11) are connected with the second screw holes (12) through screws.

5. A magnetic blow-out structure according to claim 1, wherein: the arc striking piece (4) is made of cold rolled steel, and the magnetic blowing piece (5) is made of silicon steel.