CN202839195U

CN202839195U - Novel electromagnetic driving mechanism

Info

Publication number: CN202839195U
Application number: CN 201220375606
Authority: CN
Inventors: 李兴成
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-07-31
Filing date: 2012-07-31
Publication date: 2013-03-27
Anticipated expiration: 2022-07-31

Abstract

The utility model relates to a novel electromagnetic driving mechanism which comprises a shell, a coil, an electrical pure iron, a coil bobbin, a driving shaft and a location sensing shaft and two permanent magnets, wherein the electrical pure iron is located between the two permanent magnets; when being mounted, the polarities of the two permanent magnets are opposite; and the driving shaft and the location sensing shaft are respectively located at two ends of the mechanism. As the two coils of the common bidirectional motion electromagnet are modified into one coil, the circuit is simplified, the size is reduced, and the manufacturing cost is lowered. As the electrical pure iron is placed between the two permanent magnets, the magnetic resistance is reduced, the position holding force is increased, the magnetic driving efficiency is improved, the driving control circuit is simplified, the size of the driving mechanism is reduced, and the whole safety of the system is improved. Due to the interaction between the magnetic fields generated by the two permanent magnets and the coil, the driving force of the mechanism is fluctuated a little, so that the strength requirement on the mechanical mechanism is reduced.

Description

A kind of electromagnet driving mechanism

Technical field

The utility model relates to the driving mechanism in dynamo-electric field, and is especially a kind of with electromagnetic drive mechanism.

Prior art

Existing electromagnetic drive mechanism, a kind of is single action mechanism, and an end of iron core is equipped with back-moving spring, and the resistance that iron core overcomes spring during energising moves to the precalculated position, and during outage, iron core resets under the active force of spring; Another is double action mechanical system, and existing technology is to remove the spring of single-acting structure, changes two coils into, switches on respectively for respectively two coils, and iron core is to the energising lateral movement.The single-acting mode, simple in structure, but because the existence of spring, need larger electric current by coil during startup, with generation overcome spring force required than large driving force, so volume is large, coil need to tolerate high voltage and larger electric current, and actuating force is along with the mobile fluctuation of iron core is larger; Double acting structure is with respect to the single-acting structure, although do not need to overcome the reaction force of spring, owing to having adopted two coils, so overall volume is larger, and drive circuit is complicated.Two kinds of drive units all exist actuating force to move the larger technical problem of variation with iron core.

Summary of the invention

To be solved in the utility model is that existing electromagnetic drive mechanism volume is large, and drive circuit is complicated, and actuating force moves the larger technical problem of fluctuation with iron core.

In order to solve above technical problem, the technical scheme that the utility model is taked is:

A kind of electromagnet driving mechanism, comprise housing, coil, electrical pure iron, coil rack, driving and location sensitive axle, permanent magnet, it is characterized in that, the actuating force of described driving mechanism is relevant with the number of ampere turns of the magnetic field intensity of permanent magnet and coil, and the length that drives stroke and permanent magnet is suitable.

Described permanent magnet has two, and electrical pure iron is between two permanent magnets.

Pole polarity was relative when described two permanent magnets were installed.

Described driving and location sensitive axle lay respectively at the two ends of mechanism.

Described coil is driven by DC power supply, flows through the sense of current of coil by control, can change the actuating force direction of this mechanism.

Compared with prior art, the advantage of this patent and good effect are as follows:

1, the magnetic drive efficiency is high.

A) owing to having adopted permanent magnet as iron core, the magnetic field interaction that the electromagnetic field that coil produces and permanent magnet are intrinsic has larger actuating force than the electromagnet of single action mechanism;

B) owing to the existence of electrical pure iron between two permanent magnets, greatly reduce the magnetic resistance that coil generates an electromagnetic field, further increased the efficient rate of electromagnetic field.

C) under the same terms, increase the number of turn (electromagnet of double acting structure has two coils) that to utilize coil than the electromagnet of double acting structure, can further improve actuating force.Thereby greatly improved the magnetic drive efficiency.

2, electrical security is high.Because the raising of magnetic drive efficiency, in the situation that the identical actuating force of needs, can reduce operating voltage and the operating current of system, the heating of minimizing system improves Security of the system.

3, simple in structure.Change a coil into by two coils, simplified driving circuits.

4, the Electromagnetic Drive fluctuation is less in the total travel, and is low to the requirement of strength of associated mechanical structure.Because the existence of the electromagnet that two magnetic poles are relative, the magnetic field interactions that the magnetic field that is produced by coil and two permanent magnets produce, so that the comprehensive electromagnetic actuating force in total travel fluctuates is less, electromagnetic actuation force is even.

Description of drawings

Fig. 1 is planar structure schematic diagram of the present utility model.

Among Fig. 1: 1, be housing; 2, coil; 3, electrical pure iron; 4, coil rack; 5, driving and location sensitive axle; 6, permanent magnet.

Fig. 2 is the polarity signal of the coil 2 when applying forward current to the utility model electromagnetic drive mechanism coil 2 and this mechanism action view when finishing.

Fig. 3 is the polarity signal of the coil 2 when applying reverse current to the utility model electromagnetic drive mechanism coil 2 and this mechanism action view when finishing.

Embodiment

As shown in Figure 1, a kind of electromagnet driving mechanism, comprise housing 1, coil 2, electrical pure iron 3, coil rack 4, driving and location sensitive axle 5, permanent magnet 6, it is characterized in that, the magnetic field intensity of the actuating force of described driving mechanism and permanent magnet 6 and the number of turn of coil 2 are relevant, and the length that drives stroke and permanent magnet 6 is suitable.Described permanent magnet 6 has two, and electrical pure iron 3 is between two permanent magnets 6.Pole polarity was relative when described two permanent magnets 6 were installed.Described driving and location sensitive axle 5 lay respectively at the two ends of mechanism.Described coil 2 is driven by DC power supply, flows through the sense of current of coil by control, can change the actuating force direction of this mechanism.

Concrete course of action is as follows: apply forward current for coil 2, the electromagnetic field that coil 2 produces as shown in Figure 2, the left end that is coil 2 is that the N utmost point, right-hand member are the S utmost points, according to the two like magnetic poles repel each other magnet principle that there is a natural attraction between the sexes, the thrust that the electromagnetic field that this moment, coil produced produces left permanent magnet 6, and along with the movement of permanent magnet 6, this disappears that is long the interaction force between the four pairs of magnetic poles, and comprehensive actuating force fluctuation is very little; Identical reason, when applying reverse current to coil, the electromagnetic field that coil 2 produces as shown in Figure 3, namely the left end of coil 2 is that the S utmost point, right-hand member are the N utmost points, the electromagnetic field that this moment, coil produced will be pushed right-hand member to by the iron core that permanent magnet 6 and electrical pure iron 3 form to the thrust that permanent magnet 6 produces to the right.

Claims

1. electromagnet driving mechanism, comprise housing, coil, electrical pure iron, coil rack, driving and location sensitive axle, permanent magnet, it is characterized in that, by the assembly back and forth movement in the scope of coil rack constraint that drives and location sensitive axle, permanent magnet and electrical pure iron form.

2. electromagnet driving mechanism as claimed in claim 1 is characterized in that, described permanent magnet has two, and electrical pure iron is between two permanent magnets.

3. electromagnet driving mechanism as claimed in claim 2 is characterized in that, pole polarity was relative when described two permanent magnets were installed.

4. electromagnet driving mechanism as claimed in claim 1 is characterized in that, described driving and location sensitive axle lay respectively at the two ends of mechanism.