CN2562348Y

CN2562348Y - Minimum voltage releaser of circuit breaker

Info

Publication number: CN2562348Y
Application number: CN 02263506
Authority: CN
Inventors: 严洪启
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-08-01
Filing date: 2002-08-01
Publication date: 2003-07-23
Anticipated expiration: 2012-08-01

Abstract

The utility model relates to an undervoltage releaser of a circuit breaker, which comprises a casing (12), a frame (1) arranged in the casing (12), a coil (2) arranged on the frame (1) and a movable iron core (4) positioned in the coil (2), wherein one end of the movable iron core (4) extends out of the casing (12). A still iron part is arranged on the frame (1) and positioned at the outer side of the other end of the movable iron core (4). The movable iron core (4) is sheathed with a compression spring (9). One end of the compression spring (9) is abutted with the frame (1) mutually, and the other end is abutted with a compression mechanism mutually. The circuit breaker is directly released by the movable iron core. Thus, the utility model has the advantages of simple structure, low failure rate when used, and reliable operation.

Description

The under-voltage release of circuit breaker

Technical field

The utility model relates to a kind of under-voltage release of circuit breaker, can make circuit breaker tripping when under voltage.

Background technology

In the prior art, the under-voltage release of circuit breaker comprises the coil that is arranged on the pedestal, the static iron core in the coil inner chamber, the outer end of the moving iron core in the coil inner chamber is connected with snap close, described snap close rotating shaft is articulated on the pedestal, be with torsion spring in the described snap close rotating shaft, one end and the pedestal of this torsion spring are inconsistent, and the other end and snap close are inconsistent, and described snap close amplifies tripping mechanism with secondary and is connected; Described secondary amplifies tripping mechanism and comprises finger plate, connecting rod, draw bar, one end of described finger plate is articulated on the pedestal by the finger plate rotating shaft, described draw bar is articulated on the pedestal by the draw bar rotating shaft, is provided with spring between described secondary amplification tripping mechanism and the pedestal.Because draw bar and connecting rod are hinged, and break down easily on the circuit breaker that acts frequently

Summary of the invention

The purpose of this utility model is to provide a kind of under-voltage release of service-strong circuit breaker.

The technical solution of the utility model is: a kind of under-voltage release of circuit breaker, it comprises housing, be arranged at framework in the housing, be arranged at coil on the described framework, be positioned at the moving iron core of coil, housing is stretched out in one end of moving iron core, described framework is provided with quiet iron part, quiet iron partly is positioned at the outside, the other end of moving iron core, be with the compression spring on the described moving iron core, one end and the framework of compression spring are inconsistent, and the other end and a compressing mechanism of compression spring are inconsistent.

The utility model compared with prior art has following advantage:

Directly make circuit breaker tripping by moving iron core, so the utility model is simple in structure, failure rate is low during use, operates more reliable.

Description of drawings

Accompanying drawing 1 is structure master's cutaway view of the present utility model; Wherein:

[1], framework; [2], coil; [3], bent plate; [4], moving iron core; [5], driving lever; [6], torsion spring; [7], driving lever rotating shaft; [8], cushion block; [9], compression spring; [10], baffle plate; [11], buckle; [12], housing;

Embodiment:

Referring to accompanying drawing 1, a kind of under-voltage release of circuit breaker, it comprises housing [12], be arranged at framework [1] in the housing [12], be arranged at coil [2] on the described framework [1], be positioned at the moving iron core [4] of coil [2], housing [12] is stretched out in one end of moving iron core [4], described framework [1] is provided with quiet iron part, quiet iron partly is positioned at the outside, the other end of moving iron core [4], be with compression spring [9] on the described moving iron core [4], one end and the framework [1] of compression spring [9] are inconsistent, and the other end and a compressing mechanism of compression spring [9] are inconsistent.Described compressing mechanism comprises driving lever [5], torsion spring [6], described driving lever [5] is pivotally connected with framework [1] or housing [12] by driving lever rotating shaft [7], described torsion spring [6] is enclosed within the driving lever rotating shaft [7], the both ends of torsion spring [6] contact with driving lever [5] and framework [1] or housing [12] respectively, one end of described driving lever [5] is against the other end of compression spring [9], and housing [12] is stretched out in the other end of driving lever [5].The sidepiece of described housing [12] is provided with the Elastic buckle [11] that is the bending of " U " shape, only must open the loam cake that circuit breaker covers greatly, can make the utility model install or pull down, change and to have opened the just traditional shortcoming of detachable release of the big lid of circuit breaker in the past.One end of described compression spring [9] and moving iron core [4] are inconsistent, and conflicting in the other end of compression spring [9] has baffle plate [10], described baffle plate [10] to be fixed on the moving iron core [4], and baffle plate [10] contacts with driving lever [05].Described quiet iron part is made up of cushion block [8], and the bent plate [3] on the framework [1] is fixed on cushion block [8] on the framework [1].To after coil [2] energising, act on the other end of driving lever [5] by contact of breaker, make an end of driving lever [5] push down compression spring [9], iron core [4] is pull-in in the coil [2].During breaker closing, the other end of driving lever [5] is rotated counterclockwise by the effect of contact of breaker to make driving lever one end to break away from compression spring [9], and moving iron core [4] is subjected to the attraction of quiet iron part, still overcomes the power of compression spring [9] and is in attracting state; When the voltage of coil [2] is lower than certain value, coil magnetic force is less than the power of compression spring [9], circuit breaker tripping is ejected and made in one end of stretching out outside the housing [12] of moving iron core [4], contact of breaker after the dropout remakes the other end that is used for driving lever [5] clockwise rotates it, makes driving lever [5] push down compression spring [9] again.

Claims

1, a kind of under-voltage release of circuit breaker, it comprises housing [12], be arranged at the framework [1] in the housing [12], be arranged at the coil [2] on the described framework [1], be positioned at the moving iron core [4] of coil [2], housing [12] is stretched out in one end of moving iron core [4], it is characterized in that: described framework [1] is provided with quiet iron part, quiet iron partly is positioned at the outside, the other end of moving iron core [4], be with compression spring [9] on the described moving iron core [4], one end and the framework [1] of compression spring [9] are inconsistent, and the other end and a compressing mechanism of compression spring [9] are inconsistent.

2, the under-voltage release of circuit breaker according to claim 1, it is characterized in that: described compressing mechanism comprises driving lever [5], torsion spring [6], described driving lever [5] is pivotally connected with framework [1] or housing [12] by driving lever rotating shaft [7], described torsion spring [6] is enclosed within the driving lever rotating shaft [7], the both ends of torsion spring [6] contact with driving lever [5] and framework [1] or housing [12] respectively, one end of described driving lever [5] is against the other end of compression spring [9], and housing [12] is stretched out in the other end of driving lever [5].

3, the under-voltage release of circuit breaker according to claim 1 is characterized in that: the sidepiece of described housing [12] is provided with the Elastic buckle [11] that is the bending of " U " shape.

4, the under-voltage release of circuit breaker according to claim 1, it is characterized in that: an end of described compression spring [9] and moving iron core [4] are inconsistent, conflicting in the other end of compression spring [9] has baffle plate [10], described baffle plate [10] is fixed on the moving iron core [4], and baffle plate [10] contacts with driving lever [05].

5, the under-voltage release of circuit breaker according to claim 1 is characterized in that: described quiet iron part is made up of cushion block [8], and the bent plate [3] on the framework [1] is fixed on cushion block [8] on the framework [1].