CN215680590U - Static contact of universal circuit breaker contact system - Google Patents

Abstract

The utility model provides a static contact of universal circuit breaker contact system, it includes the static contact, be equipped with static contact stationary contact and static contact arc contact on the static contact, its characterized in that: the static contact is provided with an insulating part, and the insulating part covers the area of one surface of the static contact, which is opposite to the moving contact, except the static contact, the static contact arc contact and the arc striking sheet of the static contact so as to improve the electric insulation of the static contact; according to the static contact, the isolation structure is arranged between the static contact and the static contact arc contact, so that the electrical insulation performance of the static contact of the circuit breaker is improved.

Description

Static contact of universal circuit breaker contact system

Technical Field

The utility model belongs to the technical field of circuit breakers, and particularly relates to a static contact of a universal circuit breaker contact system.

Background

The contact system is an important component of a circuit breaker, which functions to switch on and off the current. When fault current occurs in the circuit, the intelligent controller detects the fault current and sends an action signal to the operating mechanism, the operating mechanism drives the moving contact to swing, the moving contact and the fixed contact are quickly disconnected, and therefore the current is disconnected, and voltage exists between the moving contact and the fixed contact in the disconnection process, so that air media are discharged to generate electric arcs. The high temperature of the arc can cause burning damage to components near the contacts, and therefore, efforts must be made to move the arc rapidly into the arc chute, thereby reducing the arcing time.

Chinese patent ZL201721599318.1 discloses a contact system, which includes a moving contact and a stationary contact, a moving contact and a moving contact arc contact are arranged on one side of the moving contact facing the fixed contact, a fixed contact and a fixed contact arc contact are arranged on one side of the fixed contact facing the moving contact, the moving contact and the fixed contact correspond to each other, the moving contact arc contact and the fixed contact arc contact correspond to each other, and the upper part of one side of the static contact facing the moving contact is provided with an arc striking sheet for transferring the electric arc on the arc contact of the static contact to an arc extinguishing chamber, and also comprises a gas generating component, the gas generating component is arranged on one side of the fixed contact facing the movable contact at a position corresponding to the position between the fixed contact and the fixed contact arc contact or on one side of the movable contact facing the fixed contact at a position corresponding to the position between the movable contact and the movable contact arc contact. Shorten the arcing time, improve the arc extinguishing capability and prolong the electric service life of the circuit breaker. The gas generating element is arranged between the static contact point and the static contact arc contact point in the contact system, so that the static contact point and the static contact arc contact point and the corresponding moving contact point and moving contact arc contact point are turned off when electric arcs are switched on and off, but the static contact point and the static contact arc contact point are not effectively isolated, so that the static contact point and the static contact arc contact point are subjected to arc crossing, and the electric insulation performance is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a static contact of a universal circuit breaker contact system aiming at the technical defect of poor arc insulation between the static contact and the static contact arc contact of the conventional circuit breaker contact system.

Technical scheme

In order to achieve the technical purpose, the utility model provides a static contact of a universal circuit breaker contact system, which comprises a static contact, wherein the static contact is provided with a static contact and a static contact arc contact, and the universal circuit breaker contact system is characterized in that: the static contact is provided with an insulating part, and the insulating part covers the area of one surface of the static contact, which is opposite to the moving contact, except the static contact, the static contact arc contact and the arc striking sheet of the static contact so as to improve the electric insulation of the static contact;

the insulating part comprises an insulating liner and an insulating sheet, the insulating liner covers the upper part of the static contact arc contact on the static contact and the areas of the two sides except for the arc striking sheets, the insulating sheet is arranged between the static contact and the static contact arc contact, a clamping groove is formed in the position, corresponding to the insulating sheet, of the insulating liner, and the two ends of the insulating sheet are inserted into the clamping grooves and are abutted to the insulating liner to be pressed on the static contact.

Furthermore, the insulating gasket is inserted into a space between the arc ignition sheet and the static contact body, and the insulating gasket is fixed on the arc ignition sheet by using screws.

Advantageous effects

According to the static contact of the universal circuit breaker contact system, the isolation structure is arranged between the static contact of the static contact and the arc contact of the static contact, so that the electrical insulation performance of the static contact of the circuit breaker is improved.

Drawings

Fig. 1 is a schematic view of an insulator and a stationary contact assembled according to an embodiment of the present invention.

Fig. 2 is an exploded view of the insulator and the stationary contact according to the embodiment of the present invention.

Fig. 3 is a schematic view of an assembling structure of an insulating member and a fixed contact according to an embodiment of the present invention.

Fig. 4 is a product diagram of a fixed contact in an embodiment of the utility model.

Fig. 5 is a product view of an insulation gasket in an embodiment of the present invention.

Fig. 6 is a product drawing of an insulating sheet in the 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. 1,2 and 3, a static contact of a universal circuit breaker contact system includes a static contact 1, as shown in fig. 4, a static contact 101 and a static contact arc contact 102 are arranged on the static contact 1, an insulating member 2 is arranged on the static contact 1, and the insulating member 2 covers a region on a surface of the static contact 1 opposite to a moving contact, except for the static contact 101, the static contact arc contact 102 and an arc striking plate 103, so as to improve the electrical insulation of the static contact 1;

the insulating member 2 includes an insulating liner 201 and an insulating sheet 202 as shown in fig. 5 and 6, in this embodiment, the insulating liner 201 is inserted into a space a between the arc ignition piece 103 and the static contact body 104, and the insulating liner 201 is fixed on the arc ignition piece 103 on the static contact 1 by a screw 3. The insulating gasket 201 covers the upper part and two sides of the static contact arc contact 102 of the static contact 1 except for the arc striking plate 103, the insulating sheet 202 is arranged between the static contact stationary contact 101 and the static contact arc contact 102, a clamping groove 201a is arranged at the position of the insulating gasket 201 corresponding to the insulating sheet 202, and two ends of the insulating sheet 202 are inserted into the clamping groove 201a and are pressed on the static contact 1 by the insulating gasket 201.

According to the static contact of the universal circuit breaker contact system, the insulating part isolating structure is arranged between the static contact and the static contact arc contact, so that the static contact and the static contact arc contact are isolated in an insulating manner, arc series between the static contact and the static contact arc contact and between the belly part between the static contact and the static contact arc contact and the moving contact are avoided, and the electric insulating property of the circuit breaker in the breaking process 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 (2)

1. The utility model provides a static contact of universal circuit breaker contact system, it includes the static contact, be equipped with static contact stationary contact and static contact arc contact on the static contact, its characterized in that: the static contact is provided with an insulating part, and the insulating part covers the area of one surface of the static contact, which is opposite to the moving contact, except the static contact, the static contact arc contact and the arc striking sheet of the static contact so as to improve the electric insulation of the static contact;

the insulating part comprises an insulating liner and an insulating sheet, the insulating liner covers the upper part of the static contact arc contact on the static contact and the areas of the two sides except for the arc striking sheets, the insulating sheet is arranged between the static contact and the static contact arc contact, a clamping groove is formed in the position, corresponding to the insulating sheet, of the insulating liner, and the two ends of the insulating sheet are inserted into the clamping grooves and are abutted to the insulating liner to be pressed on the static contact.

2. The static contact of a conventional circuit breaker contact system as claimed in claim 1, wherein: the insulating gasket is inserted in a space between the arc striking plate and the static contact body and is fixed on the arc striking plate through screws.

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