CN2907063Y

CN2907063Y - Cylinder type electromagnetic motor

Info

Publication number: CN2907063Y
Application number: CN 200520127802
Authority: CN
Inventors: 张文嘉
Original assignee: TDK Taiwan Corp
Current assignee: TDK Taiwan Corp
Priority date: 2005-11-01
Filing date: 2005-11-01
Publication date: 2007-05-30
Anticipated expiration: 2015-11-01

Abstract

The utility model discloses a cylinder type magnetic motor, when magnetic assembly is energized, the electromagnetic filed is generated to suck and repulse the magnetic assembly so as to push the support, whereas, when magnetic assembly is de-energized, magnetic property disappears, the support and the magnetic assembly return to the original position depending on the action of a spring, the utility model can diminish the part assemblies, lessen the relative volume and reduce materials so as to reduce the cost, moreover, the utility model has simple assembly.

Description

The cylinder type electromagnetic motor

Technical field

The utility model relates to a kind of cylinder type electromagnetic motor, relates in particular to the electromagnetic motor of a kind of structure as cylinder, have the function of voice coil motor, but volume is littler, part still less, structure is simpler.

Background technology

Voice coil motor (VCM) has advantages such as volume is little, power consumption is few, the actuating displacement is accurate and cheap, be suitable as the short distance actuator in the electronic product, as the upper and lower displacement actuator of mobile phone vibrating motor, magnetic head/optical read/write head, the automatic focus actuator of camera or the like.

See also shown in Figure 1, for being used in traditional voice coil motor (VCM) decomposing schematic representation of camera automatic zooming (AF), this voice coil motor includes a loam cake 100, a lower bottom cover 105 and an outside framework 110, enclose all round in this outside framework 110 and embed four magnet 115 respectively, be provided with screw thread in one lens bracket 120, can screw in and support a camera lens 125, these lens bracket 120 peripheries are embedded with a coil 130, and these lens bracket 120 movable four magnet, 115 centers in this outside framework 110, and produce by 130 energisings of this coil that polarity of the magnetic fields repel each other with this four magnet 115 or suction mutually, drive this lens bracket 120 and activate, and this lens bracket 120 is supported on the center of this four magnet 115 by each shell fragment 135 up and down.

When these coil 130 galvanizations, this coil move forward and backward and borrow this shell fragment 135 to promote these lens brackets 120, and the overall volume of this structure is bigger because of current field effect and this magnet generation thrust, and assembly is more, so cost is higher, and assembling is complicated.

For this reason, the utility model designer is at the improvement of being concentrated on studies of existing voice coil motor structure, finally develop a kind of cylinder type electromagnetic motor of brand new, volume is littler, structure is simpler, assembly still less, power consumption still less, activate more flexibly, speed electromagnetic motor faster, be to be a utility model reasonable in design.

The utility model content

Main purpose of the present utility model provides and can reduce assembly, and relative volume diminishes, and material reduces, so the cost reduction, assembles also simple.

For achieving the above object, cylinder type electromagnetic motor of the present utility model comprises a pedestal, has a medium pore; One shell fragment; One lid has a coupling unit, be incorporated on this pedestal, and this shell fragment is located between this lid and this pedestal; One support is installed in the medium pore inside of this pedestal versatilely; One magnet assembly is installed in this support below; And an electro permanent magnetic assembly, be installed in this magnet assembly below, and be positioned at the medium pore inside of this pedestal.Therefore pass through the electromagnetic field effect of this magnet assembly and this electro permanent magnetic assembly, and this support is promoted by front and back, be made up of above-mentioned member, can reduce assembly, relative volume diminishes, and material reduces, so the cost reduction, assembles also simple.

Description of drawings

Fig. 1 is the three-dimensional exploded view of traditional voice coil motor;

Fig. 2 is the three-dimensional exploded view of the utility model cylinder type electromagnetic motor; And

Fig. 3 is the actuating state generalized section of the utility model electromagnetic motor.

The primary clustering symbol description

100 loam cakes

105 lower bottom covers

110 outside frameworks

115 magnet

120 lens brackets

125 camera lenses

130 coils

135 shell fragments

10 pedestals

11 medium pores

20 shell fragments

30 lids

40 supports

50 magnet assemblies

60 electro permanent magnetic assemblies

Embodiment

In order to make those of ordinary skill in the art can further understand the utility model is to reach technology, means and the effect that predetermined purpose is taked, see also following about detailed description of the present utility model and accompanying drawing, believe the purpose of this utility model, feature and characteristics, go deep into and concrete understanding when getting one thus, yet appended graphic reference and the explanation usefulness of only providing not is to be used for the utility model is limited.

See also shown in Figure 2, three-dimensional exploded view for the utility model cylinder type electromagnetic motor, the utility model cylinder type electromagnetic motor includes a pedestal 10, a shell fragment 20, a lid 30, a support 40, a magnet assembly 50 and an electro permanent magnetic assembly 60, and this pedestal 10 has a medium pore 11 in order to install above-mentioned each member.Because the volume of this pedestal 10 is little, therefore can make the smaller volume of the whole electromagnetic motor of the utility model, and this lid 30 can be in conjunction with being fixed on this pedestal 10.

And this shell fragment 20 is located at 10 of this lid 30 and this pedestals, and this shell fragment 20 is provided with a plurality of grooves, is formed with inboard movable part and outside fixed part, and this movable part can lock on this support 40 admittedly, and this fixed part then locks in this pedestal 10 tops admittedly.This support 40 borrows this shell fragment to support medium pore 11 inside that are active in this pedestal 10, can establish screw thread in this support 40 and screw in sealed usefulness for a camera lens 125.This shell fragment 20 is owing to belong to planar spring, so elasticity is preferable, replys also comparatively fast, and the displacement of support 40 is become greatly relatively.

Fig. 3 is the side-looking section actuating state schematic diagram of the utility model cylinder type electromagnetic motor, and these support 10 bottoms are embedded this magnet assembly 50, and this electro permanent magnetic assembly 60 is embedded at this magnet assembly 50 belows, also is positioned at the bottom of medium pore 11 inside of this pedestal 10.After electro permanent magnetic assembly 60 energising, generate an electromagnetic field polarity and can repel each other with this magnet assembly 50 or inhale mutually and produce thrust, activate this support 40, otherwise, behind electro permanent magnetic assembly 60 no powers, magnetic disappears, and borrows the elastic recovery active force of this shell fragment 20 that this support 40 and this magnet assembly 50 are restored.Wherein this magnet assembly 50 is a magnet, and this electro permanent magnetic assembly 60 is an electromagnet.

Preferably, corresponding to around this support 40, and this shell fragment 20 is provided with a medium pore with this lid 30 corresponding to this pedestal 10 to this shell fragment 20, therefore makes this support 40 can install this camera lens 125 around ground.

By the contrast of Fig. 1 and Fig. 2 as can be known, the utility model reduces a lower cover, a shell fragment and three magnet than traditional voice coil motor, simultaneously can find out that by contrast figure pedestal also relatively diminishes, the volume of magnet also reduces relatively, therefore can reduce assembly, relative volume diminishes, and material reduces, so cost reduces.

And the active principle of the utility model and traditional voice coil motor is also inequality, voice coil motor is that the coil with the fixing magnet in periphery and internal activity produces the magnetic field actuating, and the utility model to be magnet with the fixing electromagnet in bottom and top movable produce magnetic field thrust or the suction that makes progress, just as the cylinder action of automobile, it is the same to produce power in the cylinder bottom.

For this reason, the utility model really can provide a kind of far different in existing design by above-mentioned disclosed technology, may be able to improve whole use value, do not see publication or public use before its application again, really met the important document of novel patent, propose novel patent application hereby in accordance with the law.

Yet, above-mentioned disclosed graphic, explanation, only be embodiment of the present utility model, all those of ordinary skill in the art work as can do other all improvement according to above-mentioned explanation, and these change in the claim that still belongs to invention spirit of the present utility model and defined.

Claims

1. cylinder type electromagnetic motor comprises:

One pedestal has a medium pore;

One support is installed in the medium pore inside of this pedestal versatilely;

One magnet assembly is embedded at this frame bottom;

One electromagnetic assembly is embedded at this magnet assembly below, the polarity but galvanization generates an electromagnetic field, and repel each other with this magnet assembly or inhale mutually to produce thrust, activate this support;

One shell fragment is established a plurality of flutes and is formed inboard movable part and outside fixed part on it, this movable part locks in this support admittedly, and this fixed part locks in this pedestal top admittedly; And

One lid be incorporated into this pedestal top, and this shell fragment is located between this lid and this pedestal.

2. cylinder type electromagnetic motor as claimed in claim 1 is characterized in that, can establish screw thread in this support and screw in sealed usefulness for a camera lens.

3. cylinder type electromagnetic motor as claimed in claim 1 is characterized in that, this shell fragment around ground corresponding to this frame peripheral.

4. cylinder type electromagnetic motor as claimed in claim 1 is characterized in that, this shell fragment and this lid are provided with a medium pore corresponding to this pedestal.

5. cylinder type electromagnetic motor as claimed in claim 1 is characterized in that, this magnet assembly is a magnet.

6. cylinder type electromagnetic motor as claimed in claim 1 is characterized in that, this electro permanent magnetic assembly is an electromagnet.

7. a cylinder type electromagnetic motor comprises a pedestal and a support, establishes medium pore in this pedestal, and this support is active in this medium pore, and this electromagnetic motor comprises:

One magnet assembly is embedded at this frame bottom; And

One electromagnetic assembly is embedded at this magnet assembly below, the polarity but galvanization generates an electromagnetic field, and repel each other with this magnet assembly or inhale mutually to produce thrust, activate this support.

8. cylinder type electromagnetic motor as claimed in claim 7 is characterized in that, also comprises:

One shell fragment is established a plurality of flutes and is formed inboard movable part and outside fixed part on it, this movable part locks in this support admittedly, this fixed part locks in this pedestal top admittedly, the movable part of this shell fragment when thrust disappears, borrows the elastic recovery active force that this support is restored because of the thrust elastic bending.

9. cylinder type electromagnetic motor as claimed in claim 8 is characterized in that this shell fragment is provided with a medium pore corresponding to this pedestal.

10. as claim 7 a described cylinder type electromagnetic motor, it is characterized in that, can establish screw thread in this support and screw in sealed usefulness for a camera lens.

11. cylinder type electromagnetic motor as claimed in claim 7 is characterized in that, this shell fragment around ground corresponding to this frame peripheral.

12. cylinder type electromagnetic motor as claimed in claim 7 is characterized in that, also comprises:

One lid is incorporated into this pedestal top.

13. cylinder type electromagnetic motor as claimed in claim 8 is characterized in that this lid is provided with a medium pore corresponding to this pedestal.

14. cylinder type electromagnetic motor as claimed in claim 7 is characterized in that, this magnet assembly is a magnet.

15. cylinder type electromagnetic motor as claimed in claim 7 is characterized in that, this electro permanent magnetic assembly is an electromagnet.