CN220774148U - Static contact and circuit breaker - Google Patents

Abstract

The application discloses stationary contact, circuit breaker, this stationary contact include body, arc striking angle and increase the magnetic path, arc striking angle and body welded connection, increase the magnetic path and pass through rivet connection with the body, and the rivet is located the stationary contact and the contact of moving contact and keeps away from one side at arc striking angle. The static contact provided by the application can ensure that the arc extinguishing performance of electrical equipment is good.

Description

Static contact and circuit breaker

Technical Field

The application relates to the technical field of electrical equipment, in particular to a fixed contact and a circuit breaker.

Background

Electrical equipment such as circuit breaker is provided with contact system, including static contact and moving contact, wherein, generally set up the arc striking angle and increase the magnetic path on the static contact and improve the electrical property of equipment, current static contact is usually with same rivet with arc striking angle and increase the magnetic path and be connected to the body of static contact on, the drawback that this kind of structure exists is, the surface at arc striking angle has protruding or sunken because of riveting characteristic easily, protruding and sunken arc striking ability that can reduce the arc striking angle, leads to the arc extinguishing ability of equipment to descend, consequently, how to improve the static contact in order to ensure that the arc extinguishing ability of electrical equipment is good, become the technical problem that technical skill need to solve urgently.

Disclosure of Invention

In one aspect, the present application provides the following technical solutions:

the utility model provides a static contact, includes body, arc striking angle and increases the magnetic path, the arc striking angle with body welded connection, increase the magnetic path with the body passes through rivet connection, just the rivet is located the contact of static contact and moving contact is kept away from one side at arc striking angle.

Optionally, in the above static contact, the body has a first end and a second end opposite to each other, the first end is used for being connected with a wire, the second end has a bearing portion bent toward the first end, and the arc striking angle and the magnetism increasing block are located on a first face and a second face opposite to each other of the bearing portion, respectively.

Optionally, in the above static contact, the static contact includes an arc-isolating member made of an insulating material, the arc-isolating member is mounted on the bearing portion, and the rivet is covered by the arc-isolating member.

Optionally, in the above static contact, a positioning protrusion is disposed on a side surface of the bearing portion, where the side surface connects the first surface and the second surface, and the arc isolation member is provided with a first clamping groove clamped with the positioning protrusion.

Optionally, in the above static contact, a shoulder-neck-shaped connecting portion is provided on a side of the bearing portion away from the arc striking angle, and the arc isolation member is provided with a second clamping groove clamped with a shoulder of the connecting portion.

Optionally, in the above static contact, a notch for accommodating the contact is formed on a side of the arc isolation member, which is close to the arc striking angle.

Optionally, in the above static contact, a hollowed-out area opposite to the arc striking angle and the magnetism increasing block is provided at a position of the body except for the bearing part.

Optionally, in the above static contact, the first surface is provided with two opposite bosses, and a mounting groove for clamping the welding end of the arc striking angle is formed between the two bosses.

A circuit breaker comprising a stationary contact as disclosed in any one of the above.

The static contact provided by the application has the following beneficial effects:

because the rivet that connects the body of static contact and magnet increasing piece is located the contact of static contact and moving contact and keeps away from the one side of striking angle, the rivet has avoided the position that the striking angle is located promptly, so striking angle self can not appear protruding or sunken characteristic because of the existence of above-mentioned rivet, has just so avoided the setting of above-mentioned rivet to cause the influence to striking angle striking ability to can ensure that electrical equipment's arc extinguishing ability is good.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and that other drawings may be obtained according to the provided drawings without inventive effort to a person skilled in the art.

Fig. 1 is a schematic view of a stationary contact provided in an embodiment of the present application;

fig. 2 is a schematic structural view of the rest of the stationary contact shown in fig. 1 after the arc-separating member 2 is removed;

FIG. 3 is a schematic view of the arc separator 2 of FIG. 1 removed;

fig. 4 is a front view of a stationary contact provided in an embodiment of the present application;

fig. 5 is a cross-sectional view of a stationary contact provided in an embodiment of the present application;

fig. 6 is a partial cross-sectional view of a circuit breaker provided in an embodiment of the present application.

Marked in the figure as:

1. a body; 11. hollow areas; 12. a carrying part; 121. positioning the bulge; 122. a shoulder; 2. an arc isolation member; 21. a first clamping groove; 22. a second clamping groove; 23. a notch; 3. a contact; 4. adding magnetic blocks; 5. arc striking angles; 6. a rivet; 7. and a moving contact.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

Referring to fig. 1-6, the embodiment of the application provides a static contact, which comprises a body 1, an arc striking angle 5 and a magnetism increasing block 4, wherein the body 1, namely a main body part of the static contact, is made of a conductor such as copper, the arc striking angle 5 is welded with the body 1, the magnetism increasing block 4 is connected with the body 1 through a rivet 6, and the rivet 6 is positioned at one side of a contact 3 (generally made of silver or silver alloy) of the static contact and a moving contact 7, which is far away from the arc striking angle 5. Because the rivet 6 connecting the body 1 and the magnetism increasing block 4 avoids the position of the arc striking angle 5, the arc striking angle 5 cannot be raised or sunken due to the existence of the rivet 6, and the influence of the setting of the rivet 6 on the arc striking capability of the arc striking angle 5 is avoided, so that the good arc extinguishing capability of the electrical equipment can be ensured.

In a preferred embodiment, the body 1 has opposite first and second ends, the first end being adapted to be connected to a wire, the second end having a carrier portion 12 bent towards the first end, the firing angle 5 and the magnetism increasing block 4 being located on opposite first and second sides of the carrier portion 12, respectively. As shown in fig. 4 and 5, the arc striking angle 5 is located outside the bearing portion 12, that is, the upper surface of the bearing portion 12 in the drawing, and the magnetism increasing block 4 is located inside the bearing portion 12, that is, the lower surface of the bearing portion 12 in the drawing.

In a preferred embodiment, the stationary contact comprises an arc-insulating member 2 of insulating material, the arc-insulating member 2 being mounted to the carrier 12, the rivet 6 being covered by the arc-insulating member 2. As shown in fig. 1 and 2, the rivet 6 can be exposed when the arc barrier 2 is removed, and the rivet 6 can be covered when the arc barrier 2 is mounted on the carrier 12. The arc isolation piece 2 can improve the insulation performance between the fixed contact and the moving contact 7, and avoid the arc moving along the surface of the moving contact 7 to the root of the moving contact 7 during disconnection.

As shown in fig. 2 and 3, in the present embodiment, a positioning protrusion 121 is provided on a side surface of the bearing portion 12 connecting the first surface and the second surface, and the arc-separating member 2 is provided with a first clamping groove 21 clamped with the positioning protrusion 121. The positioning protrusion 121 can effectively limit the arc-isolating member 2, so that the arc-isolating member 2 is firmly held on the bearing portion 12. Specifically, the positioning protrusion 121 may be rectangular, triangular, or trapezoidal. In order to further improve the connection stability between the arc isolation member 2 and the bearing portion 12, in this embodiment, a shoulder-neck-shaped connection portion is disposed on a side of the bearing portion 12 away from the arc striking angle 5, and the arc isolation member 2 is provided with a second clamping groove 22 clamped with a shoulder 122 of the connection portion. The connecting portion is a bending region on the body 1 near the moving contact 7, and the shoulder 122 is a bending upright portion of the bending region. The shoulder-neck shape of the connection portion means that the portion of the connection portion near the contact point 3 is smaller in width than the rest.

As shown in fig. 1 and 3, in this embodiment, a notch 23 for accommodating the contact 3 is formed on a side of the arc isolation member 2 near the arc striking angle 5, so that the arc isolation member 2 can cover as many positions of the bearing portion 12 as possible, which is beneficial to further improving insulation performance between the static contact and surrounding components.

As shown in fig. 1 and 3, in this embodiment, the body 1 is provided with a hollowed-out area 11 opposite to the arc striking angle 5 and the magnetism increasing block 4 except for the bearing portion 12. The hollowed-out area 11 can provide more operation space for installing the arc striking angle 5 and the magnetism increasing block 4, and the hollowed-out area 11 can be used for a support column (not marked in the figure) in fig. 6 to pass through, so that one surface of the magnetism increasing block 4, which is opposite to the bearing part 12, is supported, and the static contact is kept stable in structure in the electrical equipment.

As shown in fig. 1 and 2, in order to improve the stability of the arc striking angle 5 on the carrying part 12, the first surface of the carrying part 12 may be provided with two opposite bosses (not labeled in the figures), between which a mounting groove for clamping the welding end of the arc striking angle 5 is formed. When the welding end of the arc striking angle 5 is placed in the mounting groove, the two bosses are respectively abutted against the two sides of the arc striking angle 5 in the width direction, and the arc striking angle 5 can be effectively prevented from shaking left and right.

In the present description, the structures of the parts are described in a progressive manner, and the structure of each part is mainly described as a difference from the existing structure, and the whole and part of the structure of the static contact can be obtained by combining the structures of the parts.

The application also provides a circuit breaker which comprises the engine and the static contact disclosed in the embodiment. Since the static contact disclosed in the above embodiment has the above technical effects, the circuit breaker having the static contact also has the above technical effects, and will not be described herein again. In particular, the circuit breaker may be of the molded case circuit breaker type.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. The utility model provides a static contact, its characterized in that includes body, arc striking angle and increases the magnetic path, the arc striking angle with body welded connection, increase the magnetic path with the body passes through rivet connection, just the rivet is located the static contact is kept away from with the contact of moving contact the one side of arc striking angle.

2. The stationary contact of claim 1, wherein the body has opposite first and second ends, the first end for connection with a wire, the second end having a bearing portion bent toward the first end, the firing angle and the magnetism increasing block being located on opposite first and second sides of the bearing portion, respectively.

3. The stationary contact of claim 2, comprising an arc-blocking member of insulating material, said arc-blocking member being mounted to said carrier portion, said rivet being covered by said arc-blocking member.

4. The stationary contact according to claim 3, wherein a positioning protrusion is provided on a side surface of the bearing portion connecting the first surface and the second surface, and the arc-isolating member is provided with a first clamping groove clamped with the positioning protrusion.

5. The stationary contact according to claim 4, wherein a side of the bearing portion away from the arc striking angle is a shoulder-neck-shaped connecting portion, and the arc-isolating member is provided with a second clamping groove clamped with a shoulder of the connecting portion.

6. The stationary contact of claim 5, wherein a side of the arc splitter adjacent the firing angle is notched to accommodate the contact.

7. The stationary contact of claim 6, wherein the body is provided with a hollowed-out region opposite to the arc striking angle and the magnetism increasing block at a position other than the bearing portion.

8. The stationary contact according to any one of claims 2 to 7, characterized in that the first face is provided with two opposing bosses, between which there is formed a mounting groove for clamping the welding end of the firing angle.

9. A circuit breaker comprising a stationary contact according to any one of claims 1 to 8.