CN204792654U - Quick tripping mechanism for breaker - Google Patents

Abstract

The utility model discloses a quick tripping mechanism for breaker, including electromagnetic means and hasp, electromagnetic means includes wiring board, coil, static contact, coil skeleton, moves iron core, quiet iron core, iron core spring, ejector pin and yoke, and wiring board, coil and static contact weld in proper order and link to each other to constitute the coil pack, quiet iron core, moves iron core, iron core spring and ejector pin and packs into and constitute the iron core subassembly in coil skeleton's the central through hole, and one end that the ejector pin is close to the hasp is equipped with to be suitable for and triggers the hasp so that the portion that triggers of its dropout, and the hasp has the stress surface with the position shaping that corresponds that the portion of triggering corresponds, the diameter of the portion that triggers 0.6mm to between the 1mm, trigger a terminal surface apart from the distance of stress surface 0.5mm to between the 1mm, the stress surface is in the ascending length in perpendicular to casing place plane side at 6mm to between the 8mm. The utility model discloses well tripping device threads off and moves rapidly, and electromagnetic means simple to operate, can effectively improve work efficiency.

Description

Circuit breaker quick-release mechanism

Technical field

The utility model relates to a kind of circuit breaker electromagnetic tripping system, belongs to breaker structure design field.

Background technology

Order circuit breaker itself is all designed with short circuit and overload duplicate protection, the defencive function of circuit breaker when namely disjunction test is simulation limit short trouble.The short-circuit protection function of circuit breaker is exactly by circuit breaker quick-release mechanism quick acting when short circuit (general operate time only needs several milliseconds); the dynamic and static contact of circuit breaker is just separated at transcient short circuit time, thus makes distribution line be cut off on paper.

Circuit breaker quick-release mechanism generally comprises push rod (belonging to the parts of calutron), snap close, and push rod is force application element, and snap close is force-summing element.During short trouble, the make-and-break time of circuit breaker decides the energy of circuit breaker inner accumulated, also determine the scaling loss degree of circuit breaker.Make-and-break time comprises mechanical action time, break-time, wherein, and the fine or not direct correlation of the design of mechanical action time and its circuit breaker quick-release mechanism.The scaling loss degree of circuit breaker during for alleviating short trouble, the design improving circuit breaker quick-release mechanism is a kind of very important method to shorten the mechanical action time.

The defect that its tripping mechanism of circuit breaker of the same type on the market at present exists: 1, the trigger unit diameter of push rod is at about 6mm, trigger unit contact-making surface when pushing up stress surface is large, stressed instability, has loss during the force of push rod, so, the trip speed of snap close can be greatly affected.

Utility model content

To this, it is more reasonable that the utility model aims to provide a kind of structure, snap close dropout circuit breaker quick-release mechanism more rapidly.

The technical scheme realizing the utility model object is:

A kind of circuit breaker quick-release mechanism, comprises calutron and snap close;

Described calutron comprises terminal block, coil, fixed contact, coil rack, dynamic iron core, static iron core, iron core spring, push rod and yoke, described terminal block, coil and fixed contact are weldingly connected formation coil block successively, described static iron core, dynamic iron core, iron core spring and push rod load the central through hole interior formation core assembly of described coil rack, described push rod is provided with near one end of described snap close and is suitable for triggering described snap close with the trigger unit making it thread off, and the correspondence position that described snap close is corresponding with described trigger unit forms stress surface;

The diameter of described trigger unit is between 0.6mm to 1mm, described in described trigger unit end face distance, the distance of stress surface is between 0.5mm to 1mm, described stress surface perpendicular to housing length in the in-plane direction between 6mm to 8mm, make trigger unit can strike stress surface when disjunction.

In technique scheme, the diameter of described trigger unit is 0.8mm, and described in described trigger unit end face distance, the distance of stress surface is 0.8mm.

In technique scheme, described core assembly is inserted in described coil, described housing is connected and composed by shell block and cap, in shell block, the position corresponding with described core assembly two ends forms mounting bracket, described each mounting bracket is provided with the first stopper slot, described yoke two ends form the second stopper slot forming the spacing hole being suitable for spacing described core assembly with described first stopper slot split, the shallow slot matched with described yoke is formed in described shell block, cap inwall forms the yoke limit rib compressing spacing described yoke, on described shell block and described cap, the position corresponding with described terminal block forms terminal block location notch.

In technique scheme, the shape of described yoke is n shape, and the shape of described shallow slot is the n shape matched with it.

The utility model has positive effect: in (1) the present embodiment, the diameter of described trigger unit 9 reduces greatly, can be understood as both when push rod triggers snap close is point cantact, effectively like this reduce contact-making surface, during push rod force, loss can be ignored, distance (this distance be distance when snap close with tripping coordinate push rod trigger unit end face to the snap close stress surface between) design of trigger unit end face to snap close stress surface is set simultaneously between 0.5mm to 1mm, can ensure that push rod obtains enough kinetic energy and triggers snap close like this, thus make snap close rapid-releasing, shorten break-time, arrange described stress surface perpendicular to housing length in the in-plane direction between 6mm to 8mm, to guarantee that trigger unit effectively can strike stress surface when disjunction.(2) in the utility model, compare with existing electromagnetic device of breaker, calutron structure in the present embodiment is more simple, and only have two solder joints, three weldments (terminal block, coil and fixed contact), structure is simple, welding difficulty is little, welding quality is high, changes the technique of electromagnetic tripping system, and be welded as main, be assembled into auxiliary, structure, reduce assembly difficulty dexterously, effectively improve efficiency of assembling.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model (saving parts thereof);

Fig. 2 is the structural representation of snap close in the utility model;

Fig. 3 is structural representation when calutron is arranged in shell block in the utility model;

Fig. 4 is the structural representation of cap in the utility model;

Fig. 5 is the structural representation of shell block in the utility model.

Reference numeral shown in figure is: 1-terminal block; 2-coil; 3-coil rack; 4-yoke; 5-fixed contact; 6-core assembly; 7-shell block; 71-mounting bracket; 8-cap; 81-yoke limit rib; 9-terminal block location notch; 10-shallow slot; 11-snap close; 111-stress surface; 12-trigger unit.

Embodiment

Do to illustrate to the concrete structure of circuit breaker quick-release mechanism in the utility model below in conjunction with Figure of description:

A kind of circuit breaker quick-release mechanism, as depicted in figs. 1 and 2, it comprises calutron and snap close 11, described calutron comprises terminal block 1, coil 2, fixed contact 5, coil rack 3, dynamic iron core, static iron core, iron core spring, push rod and yoke 4, described terminal block 1, coil 2 and fixed contact 5 are weldingly connected formation coil block successively, described static iron core, dynamic iron core, iron core spring and push rod load the central through hole interior formation core assembly 6 of described coil rack 3, described push rod is provided with near one end of described snap close 8 and is suitable for triggering described snap close 11 with the trigger unit 12 making it thread off, the correspondence position that described snap close 11 is corresponding with described trigger unit 12 forms stress surface 111, the diameter of described trigger unit 11 is between 0.6mm to 1mm, described in described trigger unit 12 end face distance, the distance of stress surface 111 is between 0.5mm to 1mm, described stress surface 111 perpendicular to housing length in the in-plane direction between 6mm to 8mm, make trigger unit 12 can strike stress surface 111 when disjunction.In the present embodiment, the diameter of described trigger unit 12 reduces greatly, can be understood as both when push rod triggers snap close 11 is point cantact, effectively like this reduce contact-making surface, during push rod force, loss can be ignored, distance (this distance be distance when snap close 11 with tripping coordinate push rod trigger unit 12 end face to the snap close stress surface 111 between) design of trigger unit 12 end face to snap close 11 stress surface 111 is set simultaneously between 0.5mm to 1mm, can ensure that push rod obtains enough kinetic energy and triggers snap close 11 like this, thus make snap close 11 rapid-releasing, shorten break-time; Arrange described stress surface 111 perpendicular to housing length in the in-plane direction between 6mm to 8mm, to guarantee that trigger unit 12 can effectively strike stress surface 111 when disjunction.

Preferably, the diameter of the described trigger unit 12 in the present embodiment can select 0.6mm, 0.8mm or 1mm, described in described trigger unit 12 end face distance, the distance of stress surface 111 is 0.5mm, 0.8mm or 1mm, described stress surface 111 perpendicular to housing length in the in-plane direction at 7mm.

Further, described core assembly 6 in the present embodiment is inserted in described coil 2, described housing is connected and composed by shell block 7 and cap 8, in shell block 7, the position corresponding with described core assembly 6 two ends forms mounting bracket 71, described each mounting bracket 71 is provided with the first stopper slot, described yoke 4 two ends form the second stopper slot forming the spacing hole being suitable for spacing described core assembly 6 with described first stopper slot split, the shallow slot 10 matched with described yoke 4 is formed in described shell block 7, cap 8 inwall forms the yoke limit rib 81 compressing spacing described yoke 4, on described shell block 6 and described cap 8, the position corresponding with described terminal block 1 forms terminal block location notch 9, compare with existing electromagnetic device of breaker, calutron structure in the present embodiment is more simple, only there are two solder joints, three weldments (terminal block, coil and fixed contact), structure is simple, and welding difficulty is little, and welding quality is high, change the technique of electromagnetic tripping system, and be welded as main, be assembled into auxiliary, structure, reduce assembly difficulty dexterously, effectively improve efficiency of assembling.The shape of the described yoke 4 in the present embodiment is n shape, and the shape of described shallow slot 10 is the n shape matched with it.

Obviously, above-described embodiment of the present utility model is only for the utility model example is clearly described, and is not the restriction to execution mode of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.And these belong to connotation of the present utility model the apparent change of extending out or variation still belong to protection range of the present utility model.

Claims (4)

1. a circuit breaker quick-release mechanism, comprises calutron and snap close (11);

Described calutron comprises terminal block (1), coil (2), fixed contact (5), coil rack (3), dynamic iron core, static iron core, iron core spring, push rod and yoke (4), described terminal block (1), coil (2) and fixed contact (5) are weldingly connected formation coil block successively, described static iron core, dynamic iron core, iron core spring and push rod load the central through hole interior formation core assembly (6) of described coil rack (3), described push rod is provided with near one end of described snap close (11) and is suitable for triggering described snap close (11) with the trigger unit making it thread off (12), the correspondence position that described snap close (11) is corresponding with described trigger unit (12) forms stress surface (111),

It is characterized in that, the diameter of described trigger unit (12) is between 0.6mm to 1mm, described in described trigger unit (12) end face distance, the distance of stress surface (111) is between 0.5mm to 1mm, described stress surface (111) perpendicular to housing length in the in-plane direction between 6mm to 8mm, to guarantee that trigger unit (12) effectively can strike stress surface (111) when disjunction.

2. circuit breaker quick-release mechanism according to claim 1, is characterized in that, the diameter of described trigger unit (12) is 0.8mm, and described in described trigger unit (12) end face distance, the distance of stress surface (111) is 0.8mm.

3. circuit breaker quick-release mechanism according to claim 1 and 2, it is characterized in that, described core assembly (6) is inserted in described coil (2), described housing is connected and composed by shell block (7) and cap (8), in shell block (7), the position corresponding with described core assembly (6) two ends forms mounting bracket (71), described each mounting bracket (71) is provided with the first stopper slot, described yoke (4) two ends form the second stopper slot forming the spacing hole being suitable for spacing described core assembly (6) with described first stopper slot split, the shallow slot (10) matched with described yoke (4) is formed in described shell block (7), cap (8) inwall forms the yoke limit rib (81) compressing spacing described yoke (4), described shell block (7) and the upper position corresponding with described terminal block (1) of described cap (8) form terminal block location notch (9).

4. circuit breaker quick-release mechanism according to claim 3, is characterized in that, the shape of described yoke (4) is n shape, and the shape of described shallow slot (10) is the n shape matched with it.