CN101527231B

CN101527231B - Release armature of an electromagnetic release

Info

Publication number: CN101527231B
Application number: CN2009100465760A
Authority: CN
Inventors: 丁一先; 全嘉青
Original assignee: PEOPLE'S ELECTRICAL APPLIANCE FACTORY SHANGHAI ELECTRICAL APPLIANCE CO Ltd
Current assignee: PEOPLE'S ELECTRICAL APPLIANCE FACTORY SHANGHAI ELECTRICAL APPLIANCE CO Ltd
Priority date: 2009-02-24
Filing date: 2009-02-24
Publication date: 2011-05-18
Anticipated expiration: 2029-02-24
Also published as: CN101527231A

Abstract

The invention relates to a release armature of an electromagnetic release, which is used in a circuit breaker. The release armature of an electromagnetic release comprises an armature basal body made of an iron magnetic material and a push rod, wherein the push rod is screwed on the armature basal body in a thread way and passes through the armature basal body, a soft ring is fixed on the end part of the armature basal body and connected with the armature basal body into a whole, and the internal hole of the soft ring is a little smaller than the diameter of a screw rod on the push rod to enable the thread on the push rod to be screwed into the soft ring and tightly packed by the internal hole of the soft ring to prevent the push rod from easily rotating, the soft ring is made of plastic or rubber, and the soft ring is fixedly embedded on the end part of the armature basal body. After the push rod with a thread is screwed into the armature basal body, the invention guarantees the position of the push rod to be set by regulation, and the set position of the push rod can not automatically change caused by vibration in work.

Description

The dropout armature of magnetictrip

Technical field

The present invention relates to a kind of dropout armature that is used for the circuit-breaker magnetictrip; Described release is as the selectable unit (SU) circuit breaker inside of packing into, and with the voltage signal of testing circuit, after the instruction that receives action, the magnetictrip action promotes circuit breaker tripping, makes circuit interruption.

Background technology

The magnetictrip that is used for circuit-breaker generally includes one and has the dropout armature of push rod, a yoke, a tripping coil and an action enlarger of being made up of several levers and form.Wherein, dropout armature and yoke are made by ferrimagnet, and both have a corresponding surface, and in the centre across an air gap.When enough big electric current flow through tripping coil, electric current had produced magnetic field in ferromagnetic material, made the dropout armature of being made by ferromagnetic material towards the motion of yoke direction, had eliminated the air gap, and promoted the lever dropout of magnetictrip enlarger by push rod.

General circuit breaker tripping needs relatively large power to promote the trigger element segment distance that moves to reach.Yet the riding position that circuit breaker can offer release is very little, so that the initial action of magnetictrip must be via the dropout requirement that could satisfy circuit breaker after the amplification of action enlarger.In this process, the stroke of magnetictrip push rod and position must accurately be located.Under existing technology, the debug process that is positioned at after the release assembling is finished is carried out.

Existing technology is that a dropout armature comprises armature matrix and a push rod made from a ferrimagnet, push rod is screwed on the armature matrix in the mode of screw thread, and the push rod head is given prominence to preceding, and dropout armature is packed into behind the release, by rotation push rod, the amount of ejecting forward of regulating push rod.The amount of ejecting of push rod should be so definite: before tripping coil was not switched on, push rod can not contact with the lever of action enlarger, can normally close a floodgate to guarantee solenoid proper reset and circuit breaker; After the tripping coil energising, the motion of dropout armature elimination air gap can guarantee the lever dropout on the pushing action enlarger really.After debugging is finished, eject change in location because of rotation, need stick with glue agent push rod and armature matrix are fixed for preventing push rod.

The shortcoming of prior art is, because the magnetictrip volume is very little, the technical difficulty of injecting the adhesive process is bigger, often because the deviation in the course of processing, cause push rod not to be completely fixed on the armature matrix, take place at work to become flexible, departed from original position; Or because adhesive overflows or Heated Flow is stained with other moving components and causes release action to be obstructed, thereby influenced the normal operation of release.

Summary of the invention

The object of the present invention is to provide a kind of dropout armature of magnetictrip, after this dropout armature can make screwed push rod screw in the armature matrix, the position-adjustable that guarantees push rod is set, and can not change the push rod position that has configured voluntarily because of vibrations at work.

The present invention is achieved in that a kind of dropout armature of magnetictrip, comprises an armature matrix and a push rod of being made by ferrimagnet, and push rod is screwed on the armature matrix in the mode of screw thread and passes the armature matrix; A flexible ring is fixed in described armature matrix end, and flexible ring and armature matrix fuse; The endoporus of described flexible ring is slightly less than the screw diameter on the push rod, makes the screw thread on the push rod can screw in flexible ring, is closely wrapped by the flexible ring endoporus again and push rod can not be rotated easily.

Described flexible ring is made by plastics or rubber.

Described flexible ring is inlayed and is fixed on armature matrix end.

Described push rod passes the pull lining of end for protruding of flexible ring one side.

The push rod that the present invention threads off in the armature screws in the armature matrix of being made by ferrimagnet in the mode of screw thread, fix a flexible ring in armature matrix end, flexible ring and armature matrix are formed one, the endoporus of flexible ring is slightly less than the diameter of thread of push rod, when push rod is screwed into the flexible ring endoporus, because the viscous effect of material, make turning of push rod produce a resistance bigger than the common metal threaded engagement, because the existence of this resistance, make that push rod at work can be because of vibrations or front and back position deviation former thereby that cause such as arbitrarily rotate, thereby guaranteed the reliability of magnetictrip action.Flexible ring by elasticity preferably plastics or rubber make, be fixed on the armature matrix with the mode of inlaying; Push rod matches with flexible ring, and push rod has auto-lock function.

The present invention adopts is fixed in the structure that the flexible ring on the armature matrix is connected with push rod, having overcome armature matrix in the prior art and structure that push rod is connected through adhesive loosening, push rod takes place easily at work departs from the defective of origin-location, thereby has guaranteed the normal operation of release.

Description of drawings

Fig. 1 is the magnetictrip schematic diagram that is contained on the circuit-breaker;

Fig. 2 is the profile of magnetictrip when dropout armature discharges;

Fig. 3 is the profile of magnetictrip when the adhesive of dropout armature;

Fig. 4 is the profile of dropout armature;

Fig. 5 is the profile the during adhesive of dropout armature among another embodiment;

Fig. 6 is the profile when dropout armature discharges among another embodiment.

Among the figure: 1 circuit breaker, 2 magnetictrips, 3 dropout armature, 4 armature matrixes, 5 push rods, 6 flexible ring, 7 flexible ring endoporus, 8 yokes, 9 tripping coils, 10 action enlargers, the gap of 11 armature matrixes and yoke, 12 springs, the gap of 13 push rods and action enlarger, 14 screw rods (screw thread), 15 push rod ends (passing the flexible ring side).

Embodiment

The invention will be further described below in conjunction with the drawings and specific embodiments.

According to one preferred example of the present invention, provide a kind of magnetictrip, when the voltage of accepting reached the action threshold value, its dropout armature moved under the effect of electromagnetic field, drove push rod pushing action enlarger and threaded off, and finally made the circuit breaker open circuit.Fig. 1 has mainly represented the mechanical connection of described magnetictrip 2 and circuit breaker 1.

Referring to Fig. 2, Fig. 2 is a kind of magnetictrip 2, and described magnetictrip 2 comprises a dropout armature that has push rod 5 and an armature matrix 43, yoke 8, a tripping coil 9 and an action enlarger 10 of being made up of several levers.Armature matrix 4 and yoke 8 are made by the good ferromagnetic material of magnetic property, and both have a corresponding surface.When described magnetictrip 2 does not obtain the adhesive signal, under the effect of spring 12, have an air gap 11 between armature matrix 4 and the yoke 8, push rod 5 with move between the enlarger 10 gapped 13.

Fig. 3 represents that described magnetictrip 2 is after obtaining the adhesive signal, dropout armature 3 overcomes the resistance of spring 12, to yoke 8 motions, has occupied the position of air gap 11 between original armature matrix 4 and the yoke 8, the lever that push rod 5 pushes up to action enlarger 10, and it is triped.

Referring to Fig. 4, the dropout armature 3 of described magnetictrip 2, dropout armature 3 is made up of an armature matrix of being made by ferromagnetic material 4, a push rod 5 and a flexible ring 6, push rod 5 is made up of for 14 sections round rod segment and screw rod, the round rod segment diameter is greater than 14 sections diameters of screw rod, screw thread 14 on the push rod 5 screws in armature matrix 4 and passes armature matrix 4, has corresponding with it endoporus and screwed hole to match in the armature matrix 4; Described armature matrix 4 ends are with mosaic mode fixing flexible ring 6, and flexible ring 6 fuses with armature matrix 4; The endoporus 7 of described flexible ring 6 is slightly less than screw rod 14 diameters on the push rod 5, and flexible ring 6 is made by plastics or rubber.When push rod 5 is screwed into flexible ring endoporus 7, because flexible ring endoporus 7 diameters are little than 14 diameters of the screw rod on the push rod 5, flexible ring endoporus 7 closely wraps push rod 5 can not rotate push rod 5 easily, 7 of push rod 5 and flexible ring endoporus produce big resistance, and loose push rod 5 screw threads of original cooperation can not freely be rotated when not applying bigger torque.Thereby guaranteed magnetictrip 2 after assembling is finished, the exact value in gap 13 can change after debugging is finished between push rod 5 and the action enlarger 10, and does not need to adopt other modes to fix.

Referring to Fig. 3 and Fig. 4, described push rod 5 passes end 15 lining of pulling for protruding of flexible ring 6 one sides, and the described lining of pulling is cylindrical push rod both sides two the identical toxoplasms of pruning; Specific purpose tool or the spanner of being convenient to have groove match with pulling lining, regulate the position that push rods 5 stretch out thereby can rotate push rod 5 easily by instrument.

Fig. 5, Fig. 6 are the application of described dropout armature 3 in the magnetictrip 2 of another embodiment.The operation principle of this magnetictrip 2 as hereinbefore, but manner of execution difference.Difference is that when this magnetictrip 2 is worked be the adhesive of switching on, after receiving a power-off signal, under the effect of spring 12 power, dropout armature 3 breaks away from yoke 8, push rod 5 will move the lever of enlarger 10 and back down, and magnetictrip 2 be threaded off, thereby make circuit-breaker 1 cut off circuit.

Claims

1. the dropout armature of a magnetictrip comprises an armature matrix and a push rod of being made by ferrimagnet, and push rod is screwed on the armature matrix in the mode of screw thread and passes the armature matrix; It is characterized in that: a flexible ring is fixed in described armature matrix end, and flexible ring and armature matrix fuse; The endoporus of described flexible ring is slightly less than the screw diameter on the push rod, makes the screw thread on the push rod can screw in flexible ring, is closely wrapped by the flexible ring endoporus again and push rod can not be rotated easily.

2. the dropout armature of magnetictrip according to claim 1, it is characterized in that: described flexible ring is made of plastics.

3. the dropout armature of magnetictrip according to claim 1, it is characterized in that: described flexible ring is made by rubber.

4. the dropout armature of magnetictrip according to claim 1, it is characterized in that: described flexible ring is inlayed and is fixed on armature matrix end.

5. the dropout armature of magnetictrip according to claim 1 is characterized in that: described push rod passes the pull lining of end for protruding of flexible ring one side.