CN205881797U - Closed permanent magnetism locking mechanism - Google Patents

Abstract

The utility model relates to a closed permanent magnetism locking mechanism, including drum, yoke cover, iron core, upper cover, lower cover, supporting sleeve and permanent magnet, the upper cover is installed to the upper end of drum, and the lower cover is installed to the lower extreme, and an enclosure space is constituteed jointly to upper cover, drum and lower cover, yoke cover, iron core, supporting sleeve and permanent magnet assembly are in this enclosure space. The utility model has the advantages that: simple structure provides through the permanent magnet and keeps the dynamics, has realized that electromagnetic mechanism's debugging is efficient, and locking mechanism friction dynamics is little, and the confining force adopts permanent magnetic force, and the energy saving loss has reached the utility model aims at providin.

Description

Enclosed permanent-magnetic retaining mechanism

Technical field

This utility model relates to the technical field of enclosed permanent-magnetic retaining mechanism, particularly relates to a kind of simple in construction, fault Rate permanent magnetism retaining mechanism in electromagnetic mechanism low, applied widely.

Background technology

Enclosed permanent-magnetic locking machinery is in a kind of vacuum contactor, as keeping "on" position during electromagnetic mechanism power-off. Tradition retaining mechanism uses mechanical lock buckle mechanism to complete.As it is shown in figure 1, mechanical lock buckle mechanism includes tripping coil 1, answers Position spring 2, limited screw 3, housing 4, snap close rotating shaft 5 and dropout guide rod 6 form.Mechanism turns by snap close in course of normal operation Axle 5 monolateral be snapped part and contacted snap close action.When needs are threaded off, tripping coil 1 electric after order about dropout and lead Bar 6, makes snap close rotating shaft 5 rotate counterclockwise, thus completes trip action.This mechanism often because of the monolateral of snap close rotating shaft 5 with The contact being snapped part is easily broken down, and contacts too much mechanical unlocking insensitive, contacts that very few to there will be snap close unreliable, is adjusting During examination integrated exposure obtain how much with use abrasion condition.Because of mechanical wear, contact can occur during to sum up reason is use Device Closing fault.

To this end, designer of the present utility model is in view of drawbacks described above, by concentrating on studies and designing, the most for many years Being engaged in experience and the achievement of related industry, research design goes out a kind of special enclosed permanent-magnetic retaining mechanism, to overcome drawbacks described above.

Summary of the invention

For overcoming the defect of prior art, this utility model provides a kind of enclosed permanent-magnetic retaining mechanism, this utility model Technical scheme be:

Enclosed permanent-magnetic retaining mechanism, including cylinder, yoke set, iron core, upper cover, lower cover, splicing sleeve and permanent magnet, described The upper end of cylinder is provided with upper cover, and lower end is provided with lower cover, and upper cover, cylinder and lower cover collectively constitute one and close space, described Yoke set, iron core, splicing sleeve and permanent magnet are assemblied in this closing space, are sequentially installed with yoke set between iron core and cylinder And permanent magnet, this yoke set is all supported by support set with upper end and the lower end of permanent magnet, and this support set is non-magnet material It is made；The two ends of described iron core stretch out upper cover and lower cover respectively, and the part stretching out lower cover is connected with electromagnetic mechanism, this iron core Under the driving of electromagnetic mechanism, it is pulled together with upper cover or lower cover.

The utility model has the advantages that: simple in construction, provide holding dynamics by permanent magnet, it is achieved that the tune of electromagnetic mechanism Examination efficiency is high, and retaining mechanism friction dynamics is little, and retentivity uses permanent magnetic, saves energy loss, has reached of the present utility model Purpose.

Accompanying drawing explanation

Fig. 1 is mechanical lock buckle mechanism structure chart described in the prior art.

Fig. 2 is main structure chart of the present utility model.

Detailed description of the invention

Further describing this utility model, advantage of the present utility model and feature below in conjunction with specific embodiment will be with Description and apparent.But these embodiments are only exemplary, scope of the present utility model is not constituted any restriction. It will be understood by those skilled in the art that can be to this utility model skill under without departing from spirit and scope of the present utility model The details of art scheme and form are modified or replace, but these amendments and replacement each fall within protection domain of the present utility model In.

Seeing Fig. 2, this utility model relates to a kind of enclosed permanent-magnetic retaining mechanism, including cylinder 2, yoke set 3, iron core 7, Upper cover 1, lower cover 6, splicing sleeve 5 and permanent magnet 4, the upper end of described cylinder 2 is provided with upper cover 1, and lower end is provided with lower cover 6, upper cover 1, cylinder 2 and lower cover 6 collectively constitute one and close space, and described yoke set 3, iron core 7, splicing sleeve 5 and permanent magnet 4 are assemblied in this In closing space, between iron core 7 and cylinder 2, it is sequentially installed with yoke set 3 and permanent magnet 4, this yoke set 3 and permanent magnet 4 Upper end and lower end are all supported by support set 5, and this support set 5 is made for non-magnet material；The two ends of described iron core 7 are divided Not stretching out upper cover 1 and lower cover 6, the part stretching out lower cover 6 is connected with electromagnetic mechanism, this iron core 7 under the driving of electromagnetic mechanism, with Upper cover 1 or lower cover 6 are pulled together.

Operation principle of the present utility model is: when electromagnetic mechanism closes a floodgate, overcomes the coupling mechanism force between iron core and upper cover, makes Iron core 7 and lower cover 6 adhesive, iron core 7, by permanent magnet 4 magnetic conduction to lower cover 6, overlaps 3 formation magnetic loops with cylinder 2 and yoke.At electromagnetism During mechanism's power-off, locking permanent magnet mechanism still can keep "on" position by magnetic retentivity.When electromagnetic mechanism separating brake, electromagnetic motor Structure, to opposite force, overcomes the coupling mechanism force between iron core and lower cover.Retaining mechanism iron core 7 is made to separate with lower cover 6.

Claims (1)

1. enclosed permanent-magnetic retaining mechanism, it is characterised in that include cylinder, yoke set, iron core, upper cover, lower cover, splicing sleeve and forever Magnet, the upper end of described cylinder is provided with upper cover, and lower end is provided with lower cover, and upper cover, cylinder and lower cover collectively constitute a closing Space, described yoke set, iron core, splicing sleeve and permanent magnet are assemblied in this closing space, pacify successively between iron core and cylinder Equipped with yoke set and permanent magnet, this yoke set and the upper end of permanent magnet and lower end are all supported by support set, and this support set is Non-magnet material is made；The two ends of described iron core stretch out upper cover and lower cover respectively, stretch out part and the electromagnetic mechanism of lower cover Connecting, this iron core, under the driving of electromagnetic mechanism, is pulled together with upper cover or lower cover.