Static contact structure with increased magnetic blow-out

Abstract

The utility model discloses a static contact structure capable of increasing magnetic blow-out, which comprises a static contact assembly, a magnetic blow-out assembly is arranged in the static contact assembly, the magnetic blow-out assembly comprises an insulation fixing piece, a groove is arranged on the upper surface of the insulation fixing piece, a plurality of magnetic conductive sheets are arranged in the groove, and the magnetic conductive sheets are arranged in the groove. And the arc striking sheet is connected in series with the plurality of magnetic conductive sheets through rivets. The arc extinguishing device is simple in structure and convenient to install, when fault short-circuit current occurs in a circuit, the moving contact and the static contact are disconnected to generate an arc, a magnetic field is increased due to the magnetic conductive sheet, the arc striking sheet is arranged above the magnetic field, the arc can quickly enter the arc extinguishing chamber under the influence of electromagnetic force and the arc striking sheet, and the arc extinguishing effect is improved. And the arc extinguishing capability and the arc extinguishing reliability of the product are enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of stationary contacts, in particular to a stationary contact structure with increased magnetic blow. Background Art

[0002] With the development of the new energy industry, there are more and more photovoltaic products, and the requirements for molded case DC products are getting higher and higher. The traditional power industry requires that the breaking capacity of molded case products should be as high as possible. The new energy industry does not have high requirements for breaking indicators, but has high requirements for the number of breaking times. In this way, traditional air blowing cannot meet the needs of new energy products. Therefore, it is particularly important to increase the intensity of magnetic blowing to make it extinguish the arc faster. Summary of the invention

[0003] The utility model aims to solve the above technical problems and provide a static contact structure with increased magnetic blow.

[0004] In order to achieve the above-mentioned technical purpose and meet the above-mentioned technical requirements, the technical solution adopted by the utility model is: a static contact structure with increased magnetic blowing, including a static contact assembly, a magnetic blowing assembly is arranged in the static contact assembly, the magnetic blowing assembly includes an insulating fixing part, a groove is arranged on the upper surface of the insulating fixing part, a plurality of magnetic conductive sheets are arranged in the groove, and the arc-starting sheet and the plurality of magnetic conductive sheets are connected in series through rivets.

[0005] Preferably, the arc-starting piece is arranged in a Z shape, and connecting ears are symmetrically arranged on both sides of one end of the arc-starting piece connected to the magnetic conductive piece.

[0006] Preferably, the magnetic conductive sheet is configured to be L-shaped, and a rivet hole is provided at the upper end.

[0007] Preferably: a screw hole is provided on the bottom plate of the insulating fixing piece, and the insulating fixing piece is connected to the static contact assembly via a self-tapping screw.

[0008] Preferably: the entire stationary contact structure is fixed in the plastic shell base by screw connection.

[0009] Compared with the traditional structure, the utility model has the following beneficial effects: simple structure, easy installation, when a fault short-circuit current occurs in the circuit, the moving and static contacts will be disconnected, thereby generating an arc, the presence of the magnetic conductive sheet will increase the magnetic field, and the arc-starting sheet is above the magnetic field, under the influence of the electromagnetic force and the arc-starting sheet, the arc will quickly enter the arc extinguishing chamber, thereby enhancing the arc extinguishing ability and arc extinguishing reliability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is one of the schematic diagrams of the structure of the utility model;

[0011] Figure 2 This is the second schematic diagram of the structure of the utility model;

[0012] Figure 3 This is a schematic diagram of the structure of the magnetic blowing assembly of the utility model;

[0013] Figure 4 This is a schematic diagram of the installation of the utility model;

[0014] In the figure: 1. Magnetic conductive sheet, 2. Insulating fixing piece, 21. Groove, 3. Arc starting sheet, 4. Rivet, 5. Stationary contact assembly, 6. Screw, 7. Plastic shell base assembly. DETAILED DESCRIPTION

[0015] The utility model is further described below.

[0016] See attached Figure 1-3 A stationary contact structure with increased magnetic blowing includes a stationary contact assembly 5, wherein a magnetic blowing assembly is arranged inside the stationary contact assembly 5, wherein the magnetic blowing assembly includes an insulating fixing member 2, wherein a groove 21 is arranged on the upper surface of the insulating fixing member 2, wherein a plurality of magnetic conductive sheets 1 are arranged in the groove 21, and an arc-starting sheet 3 is connected in series with the plurality of magnetic conductive sheets 1 through a rivet 4.

[0017] In the preferred embodiment, the arc-starting piece 3 is arranged in a Z shape, and connecting ears are symmetrically arranged on both sides of one end of the arc-starting piece 3 connected to the magnetic conductive piece 1.

[0018] In this preferred embodiment, the magnetic conductive sheet 1 is configured to be L-shaped, and a rivet hole is provided at the upper end.

[0019] In this preferred embodiment, screw holes are provided on the bottom plate of the insulating fixing member 2 , and the insulating fixing member 2 is connected to the stationary contact assembly 5 via screws 6 .

[0020] like Figure 4 As shown, the entire stationary contact structure is fixed in the plastic shell base 7 by screw connection.

[0021] During specific implementation, the utility model is installed in the conductive circuit of the DC molded case product, and is fixed in the molded case base group by screw connection, at the lower end of the arc extinguishing chamber assembly, and plays the role of carrying the main circuit current. A certain number of magnetic conductive sheets 1 are neatly arranged together, and the arc-starting sheet 3 and the magnetic conductive sheet 1 are connected in series by rivets 4, and fixed by riveting, and then installed in the groove 21 of the insulating fixing member 2, and finally inserted into the static contact assembly 5, and then connected with self-tapping screws 6, and finally installed in the base group of the molded case circuit breaker, which is easy to install. When a fault short-circuit current occurs in the circuit, the moving and static contacts will be disconnected, so that an arc will be generated. Since the presence of the magnetic conductive sheet 1 will increase the magnetic field, and the arc-starting sheet 3 is above the magnetic field, under the influence of the electromagnetic force and the arc-starting sheet, the arc will quickly enter the arc extinguishing chamber, enhancing the arc extinguishing ability and arc extinguishing reliability of the product.

[0022] The above embodiments of the present invention are merely examples to clearly illustrate the present invention, but are not intended to limit the protection scope of the present invention. All equivalent technical solutions also belong to the scope of the present invention. The patent protection scope of the present invention should be defined by the claims.

Claims

1. A stationary contact structure for increasing magnetic blow-out, comprising a stationary contact assembly (5), characterized in that: A magnetic blow assembly is arranged in the static contact assembly (5), the magnetic blow assembly comprising an insulating fixing member (2), a groove (21) being arranged on the upper surface of the insulating fixing member (2), a plurality of magnetic conductive sheets (1) being arranged in the groove (21), and an arc-starting sheet (3) and the plurality of magnetic conductive sheets (1) being connected in series via rivets (4).

2. The static contact structure for increasing magnetic blowout according to claim 1 is characterized in that: The arc-starting piece (3) is arranged in a Z shape, and connecting ears are symmetrically arranged on both sides of one end of the arc-starting piece (3) connected to the magnetic conductive piece (1).

3. The static contact structure for increasing magnetic blowout according to claim 1 is characterized in that: The magnetic conductive sheet (1) is arranged in an L shape, and a rivet hole is arranged at the upper end.

4. The static contact structure for increasing magnetic blowout according to claim 1 is characterized in that: The bottom plate of the insulating fixing member (2) is provided with screw holes, and the insulating fixing member (2) is connected to the stationary contact assembly (5) via screws (6).

5. The static contact structure for increasing magnetic blowout according to claim 1 is characterized in that: The entire stationary contact structure is fixed in the plastic shell base (7) by means of screw connections.

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