CN208873679U - A kind of breaker - Google Patents

Abstract

A kind of breaker belongs to low voltage electrical apparatus technology field.The operating mechanism for including circuit breaker frame and being arranged in circuit breaker frame, the operating mechanism includes the tripping spring for realizing breaker open operation, one end of the tripping spring is hung on operating mechanism, the other end, which is hung on, to be fixed on the hanging plate in circuit breaker frame, it is characterized by: the circuit breaker frame is provided with staged counter bore structure in the installed position for corresponding to tripping spring, the fixing piece for being fixed on hanging plate in circuit breaker frame is embedded in the staged counter bore structure.The insulation performance for improving breaker guarantees the reliability of electrical connection；Structure is simple, facilitates installation and processing and fabricating, low in cost.

Description

A kind of breaker

Technical field

The utility model belongs to low voltage electrical apparatus technology field, and in particular to a kind of breaker.

Background technique

It has been generally acknowledged that height above sea level at 1000 meters or more is high altitude localities, China about 2/3rds in industry National territorial area in height above sea level 1000m or more, and the electric switch equipments of design and use usually only can be suitably used for height above sea level at present The area below 1000m, therefore be unable to satisfy and used in high altitude localities.

With the raising of height above sea level, the reduction of air pressure and atmospheric density, air humidity declines therewith, and the medium of air Dielectric strength is the reduction with atmospheric density and gradually decreases, to will affect the electric property and safety of electric switch equipment Reliability.The insulation margin of electric switch equipment how to be improved to be suitable for high altitude localities, becomes very necessary.

Vacuum circuit breaker used at present, insulation margin is smaller, especially protrudes at 1 back side of circuit breaker frame multiple Fixing piece 4(for installing the tripping spring 21 of operating mechanism 2, hanging plate 3 is shown in Fig. 1), the fixing piece 4 is usually bolt, And bolt end outstanding can cause charge concentration, easily cause breaker insulation against ground failure.

Summary of the invention

The purpose of this utility model is to provide a kind of structure is simple, breaker easy to process is installed, can be improved The insulation performance of breaker guarantees the reliability of electrical connection.

What the purpose of this utility model was such to reach, a kind of breaker includes that circuit breaker frame and setting exist Operating mechanism in circuit breaker frame, the operating mechanism includes the tripping spring for realizing breaker open operation, described One end of tripping spring be hung on operating mechanism, the other end, which is hung on, to be fixed on the hanging plate in circuit breaker frame, described Circuit breaker frame correspond to tripping spring installed position be provided with staged counter bore structure, the staged counterbore The fixing piece for being fixed on hanging plate in circuit breaker frame is embedded in structure.

In a specific embodiment of the utility model, the staged counter bore structure include first through hole and Second through-hole, the two is in step-like setting and is mutually communicated.

In another specific embodiment of the utility model, the aperture of the first through hole is greater than described second The aperture of through-hole.

In another specific embodiment of the utility model, the fixing piece is in stud, screw rod or bolt It is a kind of.

In another specific embodiment of the utility model, the quantity of the staged counter bore structure be one and More than.

The utility model in circuit breaker frame due to offering staged counter bore structure, when hanging plate and circuit breaker frame are logical When crossing fixing piece fixation, so that the upper surface of fixing piece is embedded in counterbore without being exposed to outside circuit breaker frame surface, in this way It will not cause charge concentration in the end of fixing piece, it, can with guarantee electrical connection to improve the insulation performance of breaker By property；Structure is simple simultaneously, facilitates installation and processing and fabricating, low in cost.

Detailed description of the invention

Fig. 1 is the partial structural diagram of breaker in prior art.

Fig. 2 is the partial structural diagram of breaker described in the utility model.

Fig. 3 is the side view of Fig. 2 embodiment.

Fig. 4 is the structural schematic diagram of circuit breaker frame described in the utility model.

Fig. 5 is the structural schematic diagram of hanging plate described in the utility model.

In figure: 1. circuit breaker frames, 11. staged counter bore structures, 111. first through hole, 112. second through-holes；2. operation Mechanism, 21. tripping springs；3. hanging plate, 31. fixing ends, 311. through-holes, 32, hang end, 321. hang hole；4. fixing piece.

Specific embodiment

Specific embodiment of the present utility model is described in detail with reference to the accompanying drawing, but is not pair to the description of embodiment The limitation of technical solution, any change in the form rather than substance according to the utility model design all should be considered as the utility model Protection scope.

Fig. 2 to Fig. 5 is please referred to, includes circuit breaker frame 1 and setting disconnected the utility model relates to a kind of breaker For realizing the operating mechanism 2 of breaker on/off switch in road device frame 1.The operating mechanism 2 includes for realizing open circuit When the tripping spring 21, i.e. breaker open operation of device separating brake, the ability of the release storage of tripping spring 21, so that the sound of breaker is touched Head separation, reaches open position.The tripping spring 21 is such to fixation, and the breaker further includes having a hanging plate 3, the hanging plate 3 is fixed in circuit breaker frame 1, and one end of the tripping spring 21 is hung on hanging plate 3, separating brake The other end of spring 21 is hung on operating mechanism 2.

In order to improve the insulation performance of breaker, the circuit breaker frame 1 is in the installation position for corresponding to tripping spring 21 The place of setting is provided with staged counter bore structure 11, and the quantity of the staged counter bore structure 11 is unrestricted, can be one Or it is multiple.The staged counter bore structure 11 includes first through hole 111 and the second through-hole 112, and the two is in step-like setting and phase Mutually perforation, wherein the aperture of the first through hole 111 is greater than the aperture of second through-hole 112.The breaker is also It include the fixing piece 4 for being fixed at hanging plate 3 in circuit breaker frame 1, the fixing piece 4 can be stud, spiral shell Bar, bolt etc., one end of the fixing piece 4 are arranged in first through hole 111 and against the upper edge of the second through-hole 112 of setting On, and the end is not exposed from the surface of circuit breaker frame 1, the other end of fixing piece 4 from the second through-hole 112 pass through afterwards with extension Plate 3, which is realized, to be fixed.The other end of fixing piece 4 is provided with the combination of nut spring washer, realizes the fixation of hanging plate 3.The hanging plate 3 includes There is a fixing end 31 and one to hang end 32, the fixing end 31 is provided with the through-hole 311 for passing through for fixing piece 4, described Hang end 32 by 31 bending of fixing end into and it is extended downwards, it is described hang to be provided on end 32 hang hole 321.

Since the wall body surrounding of first through hole 111 and one end of fixing piece 4 are there are gap, first through hole 111 and solid Determine to fill between part 4 using welding technique, so that the surface for offering the circuit breaker frame 1 of staged counter bore structure 11 keeps flat Whole property influences flatness if any prominent crator etc., and usable postwelding polishes technology.

Claims (5)

1. the operating mechanism that a kind of breaker includes circuit breaker frame (1) and is arranged in circuit breaker frame (1), described Operating mechanism (2) include tripping spring (21) for realizing breaker open operation, one end of the tripping spring (21) It is hung on operating mechanism (2), the other end is hung on the hanging plate (3) being fixed on circuit breaker frame (1), it is characterised in that: The circuit breaker frame (1) is provided with staged counter bore structure (11) in the installed position for corresponding to tripping spring (21), The fixing piece for being fixed on hanging plate (3) on circuit breaker frame (1) is embedded in the staged counter bore structure (11) (4)。

2. a kind of breaker according to claim 1, it is characterised in that the staged counter bore structure (11) includes First through hole (111) and the second through-hole (112), the two is in step-like setting and is mutually communicated.

3. a kind of breaker according to claim 2, it is characterised in that the aperture of the first through hole (111) is greater than institute The aperture for the second through-hole (112) stated.

4. a kind of breaker according to claim 1, it is characterised in that the fixing piece (4) is stud, screw rod or spiral shell One of bolt.

5. a kind of breaker according to claim 1, it is characterised in that the quantity of the staged counter bore structure (11) It is one or more.