CN103166415B - Motor and the digital light processing formula scialyscope including this motor - Google Patents
Motor and the digital light processing formula scialyscope including this motor Download PDFInfo
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- CN103166415B CN103166415B CN201110406447.5A CN201110406447A CN103166415B CN 103166415 B CN103166415 B CN 103166415B CN 201110406447 A CN201110406447 A CN 201110406447A CN 103166415 B CN103166415 B CN 103166415B
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Abstract
The present invention provides a kind of motor and the device including this motor, especially digital optical processing (DLP) formula scialyscope.Described motor includes being arranged on the magnet unit of the outer peripheral face radial outside of the side wall of rotor retainer, rather than the flux of rotor magnet is spilt by aperture portion from hole portion on the wall of side.Due to not aperture portion on the side wall of rotor retainer, improve the characteristic of motor, reduce the vibration producing during motor operation and noise, so that the assembly technology of motor is simplified, thus improve production efficiency.The colour wheel that described DLP formula scialyscope includes described motor and driven by motor.Due to magnet unit be arranged on the outer peripheral face radial outside of the side wall of rotor retainer it is easy to make magnet unit magnetic pole boundary portion substantially aligned in the circumferential direction with a color boundary portion of colour wheel.
Description
Technical field
The present invention relates to a kind of motor, especially with the middle motor needing to detect its turned position, further relate to a kind of bag
Include the digital light processing formula scialyscope of the motor for driving colour wheel.
Background technology
In many electronic equipments including motors, such as include the floppy disk of motor for driving floppy disk and
Including the turned position in the digital light processing formula scialyscope of the motor for driving colour wheel, being required for detection motor.For example, in
A kind of motor is disclosed, wherein by detecting that using inductor the flux of rotor magnet is examined in state patent documentation CN1179344C
Survey the position of rotary body.As shown in Figure 1-2, the rotor yoke iron 3 of this motor is shaped as the shallower cup of overall depth, in its periphery
Nick shaped hole portion 3b of Rack, integrally provided with flange 3a in portion, is formed with a part of flange 3a.In addition, turning
On sub- yoke 3, heart is equipped with axle 9 therethrough.Rotor magnet 8 is sticked in the inner circumferential of flange 3a with circularizing endless, and
And become S pole-N pole according to all-round decile mode alternating magnetization, and a part for rotor magnet 8 is exposed at rotor yoke by hole portion 3b
The outside of ferrum 3.As shown in figure 3, being provided with inductor 7 near the periphery of flange 3a.Thus, when 3 turns of the rotor yoke iron of motor
When dynamic, with this rotation, the rotor magnet 8 being exposed by hole portion 3b is equally rotated, it when and leave inductor 7, when and
Close to inductor 7.When the rotor magnet 8 near hole portion 3b leaves inductor 7, because inductor 7 does not receive rotor magnetic completely
The flux of ferrum 8, so the induced voltage of inductor 7 is zero；And when the rotor magnet 8 near hole portion 3b is close to inductor 7, by
Receive the flux of rotor magnet 8 in inductor 7, so the induced voltage of inductor 7 is proportional to flux time change
Value.Subsequently the flux by exporting in the form of voltage to inductor 7 detects that output valve carries out suitable process it is possible to obtain horse
Reach the indication signal of rotation.
However, there is following technical problem in the motor of above-mentioned prior art：(1) due to being provided with rotor yoke iron 3
Hole portion 3b, the flux of rotor magnet 8 spills, and motor characteristics can deteriorate；(2) when rotor magnet 8 is fixed on the convex of rotor yoke iron 3
When in the inner circumferential of edge 3a, due to can not be in the all-round coated with adhesive of the outer peripheral face of rotor magnet 8, so more vibrations can be produced
And noise；(3) when carrying out the assembling of rotor magnet 8 and rotor yoke iron 3, need the boundary of magnetic pole is indicated on rotor magnet 8
The boundary portion of limit part and the magnetic pole of rotor magnet to be made 8 exposes from hole portion 3b, thus leading to working performance low.
Therefore, it is badly in need of a kind of motor that can solve the problem that the problems referred to above.
Content of the invention
An aspect of of the present present invention is it is simply that provide a kind of motor that can solve the problem that one or more the problems referred to above.The present invention's
Motor includes rotary body and meront, and this rotary body includes the rotor retainer with cylindrical lateral wall and top cover, this meront
Including magnetic position testing agency, it is located at around rotor retainer, for detecting the position of rotation of rotor retainer, wherein should
Rotary body also includes the magnet unit on a side wall radial outside being arranged on rotor retainer, this magnet unit in the circumferential direction
On have two different magnetic poles of polarity and be located at described two magnetic poles between a magnetic pole boundary portion.Due to the present invention's
It is not provided with hole portion on the side wall of the rotor retainer of motor, can prevent from affecting horse because of dust deposit in rotor retainer inside
The operation reaching, reduces the vibration producing during motor operation and noise, so that the assembly technology of motor is simplified, thus improving
Production efficiency.The assembling of the coating of binding agent and rotor magnet becomes easy, and the flux of rotor magnet will not leak from hole portion
Go out, which improve the runnability of motor.Further, since magnet unit has two magnetic poles in the circumferential direction, decrease magnetic pole
Switching position.
Another aspect of the present invention provides a kind of digital light processing formula scialyscope, and it is included described in foregoing embodiments
Motor, also includes the colour wheel being driven by this motor.Because magnet unit is arranged on the radial outside of the side wall of rotor retainer, very
Easily make the magnetic pole boundary portion of magnet unit substantially aligned in the circumferential direction with a color boundary portion of colour wheel.
Brief description
Those of ordinary skill in the art by referring to carry out described above and below of accompanying drawing will become more apparent that understand this
The above-mentioned and other advantage of invention, in the accompanying drawings：
Fig. 1 is a kind of partial sectional view of the rotor yoke iron of motor of prior art；
Fig. 2 is the view of the inside of the rotor yoke iron illustrating Fig. 1；
Fig. 3 is the view of the induction coil mutual alignment of the rotor yoke iron of the motor illustrating Fig. 1 and inductor；
Fig. 4 is the fundamental diagram of single-chip digital optical processing formula scialyscope；
Fig. 5 (a), (b) and (c) respectively illustrate the three-stage colour wheel that the digital light processing formula scialyscope of Fig. 4 used, four
Segmentation colour wheel and six segmentation colour wheels；
Fig. 6 shows the top view of motor according to the first embodiment of the invention；
Fig. 7 is the sectional view of a part of Fig. 6, and wherein magnet unit is in the position quilt near magnetic position testing agency
Configuration is between the side wall of rotor retainer and this magnetic position testing agency；
Fig. 8 shows the color boundary portion of the magnetic pole boundary portion of the arc-shaped magnets of motor and colour wheel in the circumferential direction substantially
Alignment；
Fig. 9 shows the sectional view of motor according to the second embodiment of the invention；
Figure 10 shows the sectional view of a modification of the motor of Fig. 9；
Figure 11 illustrates that the first arc-shaped magnets of the motor of Fig. 9 and the second arc-shaped magnets are installed on rotor retainer and determined
Position；
Figure 12 shows the color in first arc-shaped magnets of Figure 11 and the magnetic pole boundary portion of the second arc-shaped magnets and colour wheel
Color boundary portion is substantially aligned in the circumferential direction；
Figure 13 shows the resin on the outer peripheral face of the first arc-shaped magnets and the second arc-shaped magnets being arranged on Figure 11
Ring.
Specific embodiment,
To be answered as specific with digital optical processing (Digital Light Processing, DLP) formula scialyscope below
It is used for describing the motor of the present invention.However, it will be understood by those skilled in the art that the motor of the present invention is not limited to be applied to this,
And can apply to need any device of the turned position detecting motor, such as floppy disk.
The principle of DLP formula scialyscope and structure
DLP formula scialyscope is due to becoming the master of digital-code projector the advantages of brightness height, durable and small volume
Miscarriage product.Fig. 4 shows the fundamental diagram of monolithic DLP formula scialyscope.The light output that projection bulb 10 sends is to collecting lenses
11, after optically focused, infrared, ultraviolet filter 13 is reflexed to by reflecting mirror 12.Even light is entered after filtering infrared ray and ultraviolet
Device solid light conduit 14 (also referred to as optically focused rod or integrating rod).Light is homogenized after light guide, after homogenization
Beam of white light be irradiated on the light-splitting device being referred to as colour wheel 15, be three kinds of red, green, blue through the effect of colour wheel decomposition of white light
Primary lights.Red, green, blue three primary colours light reflexes to relay lenss 17 through reflecting mirror 16, and relay lenss 17 are lens group, it
Total reflection prism (TIR Prism) 18 is incided after light is focused.The effect of total reflection prism is that adjustment light is mapped to number
Angle of incidence on word micro-mirror device (Digital Micromirror Device, DMD) 19 is so that the micromirror on DMD rotates
When, light is taken in exactly or deviates projecting lens 20, form image on the projection screen.
Colour wheel 15 can be to be divided into 3 regions on a ring-shaped disc, each region applies red (R), green (G),
Blue (B) filter material, such as shown in Fig. 5 (a).In order to improve brightness, colour wheel 15 can be four-part form, that is, increase another bright zone
Domain (W) can pass through a part of white light, such as shown in Fig. 5 (b).Or, in order to improve color reductibility, colour wheel 15 can be six sections
Formula, such as Fig. 5 (c).In order to improve colour reproduction, it is corresponding with them that six segmentation colour wheels can be made into primary colours in red, green, blue 3
3 kinds of complementary colors, that is, blue or green, pinkish red, yellow.Improvement more further is to add white on the six-segment color wheel of primary colours and complementary color,
Further improve brightness while improving color reducibility.Colour wheel 15 has respectively in the boundary of two adjacent color regions
Colored boundary portion 22, for example, three-stage colour wheel has three color boundary portions, and four-part form colour wheel has four color boundaries
Portion, six segmentation colour wheels have six color boundary portions.Additionally, the area of each color region can specifically set as needed on colour wheel
Fixed, for example set the radian of each color region.
Colour wheel 15 is driven by motor, and its rotary speed is synchronous with the video signal of various video player inputs.
The position signalling that DMD 19 is fed back by motor is mapped to light color species thereon judging with the rotation of colour wheel 15, and
Determined where position to projecting lens 20 in the light when beating which kind of color according to video signal.Accordingly, it would be desirable to color
Signal detection device is set up on the relative motor periphery of wheel ad-hoc location as every starting point rotating a week, by face on colour wheel
The color size of space carrys out fill-in light process chip analysis light color species.
Colour wheel drive motor
The motor of the present invention includes the rotary body with a central axis, and the meront coaxial with rotary body.This rotation
Swivel includes：Axle, it extends along described central axis；Rotor retainer, it is directly or indirectly fixed to axle, can have circle
Cylindrical sidewall and the top cover being radially oriented inner side extension from the top of this side wall；Rotor magnet, it can be fixed to rotor and keep
On the inner peripheral surface of side wall of frame.This meront includes：Bearing portion, it is pivotably supported axle；Stator, it is by rotor retainer
Side wall and top cover cover, may be located at than rotor magnet closer to the position of radially inner side and with rotor magnet diametrically contraposition；Magnetic
Property position detecting mechanism, its be located at this rotor retainer around, for detecting the position of rotation of rotor retainer.This magnetic position
Testing agency is, for example, Hall integrated circuit.The said structure of motor is only used as example, not as limitation of the present invention, and
Known to said structure is for a person skilled in the art, therefore here is not described in detail.
In the configuration of the motor of the present invention, be not in the side wall of rotor retainer setting hole portion with by rotor magnet
Flux spills, but what the outer peripheral face radial outside setting of the other side wall in rotor retainer was rotated together with rotor retainer
Magnet unit, this magnet unit is mutually close with this magnetic position testing agency, and preferably this magnet unit is near described magnetic
The position of position detecting mechanism is configured between this side wall and this magnetic position testing agency, so that magnetic position testing agency
The flux receiving from magnet unit changes with the rotation of rotor retainer, thus output is with the position of magnet unit as function
Induced voltage.The present invention is namely based on what above design was made.
Fig. 6 shows the top view of motor according to the first embodiment of the invention.The rotor retainer of motor 100
110 arrange magnet unit on the outer peripheral face of its side wall, and this magnet unit includes the circle that an outer peripheral face with this side wall mates
Arcuation Magnet 120, this arc-shaped magnets has N pole and S pole in the circumferential direction and is located at a magnetic pole between N pole and S pole
Boundary portion.In addition also in the radial outside setting resin portion 130 of this side wall of rotor retainer 110.As illustrated, arc-shaped magnetic
Ferrum 120 is by being covered outer peripheral face and being fixed to the side of rotor retainer 110 by the resin portion 130 that the insertion of resin shapes and formed
The outer peripheral face of wall, at least a portion in the magnetic pole boundary portion of this arc-shaped magnets is exposed.Or, arc-shaped magnets 120 can be led to
Cross the outer peripheral face that binding agent is attached to the side wall of rotor retainer 110, and do not use resin portion.Hall integrated circuit 140 is arranged
On meront, positioned at the vicinity of arc-shaped magnets 120.
In the embodiment using resin portion, the periphery of resin portion 130 forms a socket, arc-shaped magnets
120 are inserted in this socket.Preferably, the axial upper surface 122 of arc-shaped magnets 120 exposes, and resin portion 130 has one
Entirely around the annulus 132 of the outer peripheral face of rotor retainer 110, this annulus 132 can for example be located at arc-shaped magnets 120
Axial direction on the downside of, as shown in Figure 7.It is highly preferred that the thickness of resin portion 130 is more than the thickness of arc-shaped magnets 120.
The magnetic pole boundary portion of one piece of arc-shaped magnets 120 may be located at any position of its circumferential direction, needs when using
Mark this magnetic pole boundary portion.Preferably, this magnetic pole boundary portion is located at the circumferential direction central part of arc-shaped magnets 120, with easily
Go out by visual discrimination.Colour wheel 15 is fixed to rotor retainer 110, rotates together with rotor retainer 110, thus realizing motor pair
The driving of colour wheel.Preferably, colour wheel 15 is attached to the top cover of rotor retainer 110 by binding agent perpendicular to central axis.Reason
By upper, colour wheel 15 can be not particularly limited with respect to the orientation in the magnetic pole boundary portion of arc-shaped magnets 120.However, for the ease of
Assembling and follow-up calculating are it is preferable that a color boundary of the magnetic pole boundary portion 124 of arc-shaped magnets 120 and colour wheel 15
Portion 22 is substantially aligned in the circumferential direction, as shown in Figure 8.
Fig. 9 schematically shows the sectional view of the second embodiment of the motor of the present invention.As illustrated, motor 200
The outer peripheral face radial outside of rotor retainer 210 is provided with magnet unit, this magnet unit includes detached two pieces of arc-shapeds
Magnet, i.e. the first arc-shaped magnets 220a and the second arc-shaped magnets 220b, they are configured as outer with rotor retainer 210
Side face is substantially matching.First arc-shaped magnets 220a have first magnetic pole, such as N pole in the circumferential direction, and the second circular arc
Shape Magnet 220b has second magnetic pole different from the first pole polarity, such as S pole in the circumferential direction.Figure 10 shows figure
The sectional view of one modification of 9 motor.First arc-shaped magnets 220a ' there is first magnetic pole, such as N in the circumferential direction
Pole, and along central axial direction, also there is second magnetic pole being different from the first pole polarity, for example, S pole；And the second circle
Arcuation Magnet 220b ' has first magnetic pole, such as N pole in the circumferential direction, and also has one along central axial direction
Different from the second magnetic pole of the first pole polarity, for example, S pole；In use, the first arc-shaped magnets 220a ' and the second circular arc
Shape Magnet 220b ' is arranged to the first arc-shaped magnets 220a ' the first magnetic pole (N pole) and the second magnetic pole (S pole) in the circumferential direction
Upper respectively correspond to the second arc-shaped magnets 220b ' the second magnetic pole (S pole) and the first magnetic pole (N pole).
As the first embodiment, the first arc-shaped magnets 220a in the second embodiment, 220a ' and the second arc-shaped
Magnet 220b, 220b ' can be attached to the outer peripheral face of rotor retainer 210 by binding agent, or are fixed to by resin portion
The outer peripheral face of rotor retainer 210.
As shown in figure 11, the first arc-shaped magnets 220a have first end 220a1 and the second end 220a2 in the circumferential direction,
Second arc-shaped magnets 220b have first end 220b1 and the second end 220b2 in the circumferential direction, the first arc-shaped magnets 220a and
Second arc-shaped magnets 220b be arranged to first end 220a1 of the first arc-shaped magnets 220a and the second end 220a 2 respectively with
First end 220b1 of the second arc-shaped magnets 220b and the second end 220b2 are close to each other.Preferably, the first arc-shaped magnets
First end 220b1 of first end 220a1 of 220a and the second arc-shaped magnets 220b contacts with each other, due to the first arc-shaped magnets
220a and the second arc-shaped magnets 220b have different magnetic poles in the circumferential direction, are therefore formed in the position that the two contacts with each other
Described magnetic pole boundary portion 224；And first arc-shaped magnets 220a the second end 220a2 and the second arc-shaped magnets 220b
Two end 220b2 are spaced, thus forming a gap 226 between.It is highly preferred that keeping in rotor in gap 226
One counterweight 228 is attached on frame 210.
Colour wheel 15 is fixed to rotor retainer 210, rotates together with rotor retainer 210, thus realizing motor to colour wheel
Driving.Preferably, colour wheel 15 is attached to the top cover of rotor retainer 210 by binding agent perpendicular to central axis.In theory,
Colour wheel 15 can not with respect to the orientation in the magnetic pole boundary portion 224 of the first arc-shaped magnets 220a and the second arc-shaped magnets 220b
Especially limit.However, for the ease of assembling and follow-up calculating it is preferable that a color of magnetic pole boundary portion 224 and colour wheel 15
Color boundary portion 22 is substantially aligned in the circumferential direction, as shown in figure 12.
In the first arc-shaped magnets 220a and the second arc-shaped magnets 220b, rotor retainer 210 is attached to by binding agent
In the embodiment of outer peripheral face, preferably the outer peripheral face in the first arc-shaped magnets 220a and the second arc-shaped magnets 220b is arranged
One resin ring 229, as shown in figure 12, thus prevent Magnet from departing from because centrifugal force is excessive in the case of motor rotations height.
Although showing in the embodiment above that arc-shaped magnets are fixed to rotor retainer by binding agent or resin portion
Outer peripheral face, but it will be understood by those skilled in the art that using other modes, arc-shaped magnets can be maintained at rotor retainer
Outer peripheral face radial outside, and with this outer peripheral face spaced radial one distance.The present invention has advantages below.
In an exemplary embodiment, described magnet unit includes arc-shaped magnets, and it is attached that it passes through binding agent
It is connected to the outer peripheral face of the side wall of rotor retainer.This fixing meanss are simple.
In an exemplary embodiment, described magnet unit includes arc-shaped magnets, and this arc-shaped magnets is led to
Cross the outer peripheral face that resin portion is fixed to the side wall of rotor retainer, at least a portion of the outer peripheral face of this arc-shaped magnets is exposed.
This fixing meanss can prevent Magnet from coming off in the case of motor high-speed rotation.
In an exemplary embodiment, the upper surface of arc-shaped magnets exposes from resin portion, and it is complete that resin portion has one
The annulus of the full outer peripheral face around rotor retainer.In an exemplary embodiment, this annulus is located at this arc-shaped
On the downside of the axial direction of Magnet.This structure of resin portion is easy to the installation of arc-shaped magnets, and at least due to resin portion
Divide and connect circlewise, so increasing the intensity of resin portion.
In an exemplary embodiment, magnetic pole boundary portion is located at the circumferential direction central part of arc-shaped magnets.Can hold
Change places and go out magnetic pole boundary portion by visual discrimination, be easy to follow-up colour wheel and install.
In an exemplary embodiment, the thickness of resin portion is more than the thickness of arc-shaped magnets.Due to resin portion ratio
Arc-shaped magnets are thick, can effectively reduce the imbalance of rotary body.
In an exemplary embodiment, magnet unit includes detached first arc-shaped magnets and the second arc-shaped magnetic
Ferrum, the first arc-shaped magnets have first magnetic pole in the circumferential direction, and the second arc-shaped magnets have one in the circumferential direction
Second magnetic pole different from the first pole polarity.By magnet unit is designed to separate type, can visually identify magnetic
Pole boundary portion.Therefore, it is easily adjusted the position of Magnet and colour wheel, and after colour wheel is installed, the position of Magnet can be adjusted
Whole.
In an exemplary embodiment, the first arc-shaped magnets have the first magnetic pole and with along central axial direction
The second different magnetic pole of one pole polarity, the second arc-shaped magnets along central axial direction have the first magnetic pole and with the first magnetic pole
The second different magnetic pole of polarity, the first arc-shaped magnets and the second arc-shaped magnets are arranged to the first of the first arc-shaped magnets
Magnetic pole and the second magnetic pole correspond to the second magnetic pole and first magnetic pole of the second arc-shaped magnets in the circumferential direction respectively.So can so that
Arrangement in magnetic position testing agency.
In an exemplary embodiment, the first arc-shaped magnets have first end and the second end in the circumferential direction, the
Two arc-shaped magnets have first end and the second end in the circumferential direction, and the first arc-shaped magnets and the second arc-shaped magnets are arranged
First end for the first arc-shaped magnets and the second end are close to each other with the first end of the second arc-shaped magnets and the second end respectively.
In an exemplary embodiment, the first end of the first end of the first arc-shaped magnets and the second arc-shaped magnets
Contact with each other, thus forming magnetic pole boundary portion in the contact position of the two；And first arc-shaped magnets the second end and second
Second end arranged for interval of arc-shaped magnets, thus form a gap between.Because the second of two arc-shaped magnets
End is not in contact with even if so bad in the precision of rotor retainer, such as, when the diameter of rotor retainer is less than expected value, also may be used
Successfully to install the first arc-shaped magnets and the second arc-shaped magnets.
In an exemplary embodiment, a counterweight is arranged in described gap on the outer peripheral face of rotor retainer.
This can play balanced action to rotary body.
In an exemplary embodiment, fixing on the outer peripheral face of the first arc-shaped magnets and the second arc-shaped magnets
There is a resin ring.This can prevent Magnet from coming off in the case of motor high-speed rotation.
On the other hand, the invention provides a kind of digital light processing formula scialyscope, it includes arbitrary in the embodiment above
Motor described in, also includes the colour wheel being driven by this motor.
In an exemplary embodiment, described colour wheel has multiple color region and in the circumferential direction adjacent
Multiple color boundary portions between two kinds of color regions, described colour wheel is fixed on rotor retainer, the magnet unit of motor
One of color boundary portion of magnetic pole boundary portion and colour wheel in the circumferential direction substantially aligned.This can be in order to colour wheel and magnet unit
Installation positioning, be easy to the subsequent treatment of voltage output value being exported by magnetic position testing agency.
It will be understood by those skilled in the art that the above-mentioned embodiment that reference will be made to the accompanying drawings is only exemplary, the present invention
Protection domain be not limited to this.Feature in embodiment can be combined, replaces, changes or delete, without deviating from this
The spirit of invention and essence.Protection scope of the present invention is limited by incidental claims.
Claims (22)
1. a kind of motor, including rotary body and meront, described rotary body includes thering is cylindrical lateral wall and from described side wall
Top is radially oriented the rotor retainer of the top cover extending in inner side, and described meront includes magnetic position testing agency, and it is located at
Around described rotor retainer, for detecting the position of rotation of described rotor retainer,
It is characterized in that,
Described rotary body also includes the magnet unit on a radial outside for described side wall being arranged on described rotor retainer,
Described magnet unit is mutually close with described magnetic position testing agency, have in the circumferential direction two different magnetic poles of polarity and
A magnetic pole boundary portion between described two magnetic poles,
Wherein said rotary body includes being arranged on the resin portion of the radial outside of described rotor retainer,
Described magnet unit includes arc-shaped magnets, and described arc-shaped magnets cover its outer peripheral face by described resin portion,
And it is fixed to the outer peripheral face of the described side wall of described rotor retainer, the described magnetic pole boundary portion of described arc-shaped magnets is at least
A part is exposed,
Described resin portion has the annulus of an outer peripheral face entirely around described rotor retainer.
2. motor according to claim 1, wherein said magnet unit is attached to described rotor retainer by binding agent
Side wall outer peripheral face.
3. motor according to claim 1, the periphery of wherein said resin portion forms a socket, described arc-shaped magnets
It is inserted in described socket, and the upper surface of described arc-shaped magnets exposes.
4. motor according to claim 3, wherein said annulus are located on the downside of the axial direction of described arc-shaped magnets.
5. the motor according to any one of claim 2-4, wherein said magnetic pole boundary portion is located at described arc-shaped magnets
Circumferential direction central part.
6. the motor according to any one of claim 2-4, the thickness of wherein said resin portion is more than described arc-shaped magnetic
The thickness of ferrum.
7. a kind of digital light processing formula scialyscope, including the motor described in claim 1, also includes the color being driven by described motor
Wheel.
8. digital light processing formula scialyscope according to claim 7, wherein said colour wheel has multiple face in the circumferential direction
Zone domain and the multiple color boundary portions between two kinds of adjacent color regions, described colour wheel is fixed on described rotor and keeps
On frame, the described magnetic pole boundary portion of the described magnet unit of described motor and the one of described color boundary portion of described colour wheel
In the circumferential direction alignment.
9. a kind of motor, including rotary body and meront, described rotary body includes thering is cylindrical lateral wall and from described side wall
Top is radially oriented the rotor retainer of the top cover extending in inner side, and described meront includes magnetic position testing agency, and it is located at
Around described rotor retainer, for detecting the position of rotation of described rotor retainer,
It is characterized in that,
Described rotary body also includes the magnet unit on a radial outside for described side wall being arranged on described rotor retainer,
Described magnet unit is mutually close with described magnetic position testing agency, have in the circumferential direction two different magnetic poles of polarity and
A magnetic pole boundary portion between described two magnetic poles,
Described magnet unit includes detached first arc-shaped magnets and the second arc-shaped magnets, and described first arc-shaped magnets exist
One the first magnetic pole is had on circumferential direction, described second arc-shaped magnets have one and described first magnetic pole pole in the circumferential direction
The second different magnetic pole of property；
Wherein said rotary body includes being arranged on the resin portion of the radial outside of described rotor retainer,
Described arc-shaped magnets cover its outer peripheral face by described resin portion, and are fixed to the described side wall of described rotor retainer
Outer peripheral face, at least a portion in the described magnetic pole boundary portion of described arc-shaped magnets exposes,
Described resin portion has the annulus of an outer peripheral face entirely around described rotor retainer.
10. motor according to claim 9, wherein said magnet unit is attached to described rotor retainer by binding agent
Side wall outer peripheral face.
11. motors according to claim 9, wherein said first arc-shaped magnets have first end and in the circumferential direction
Two ends, described second arc-shaped magnets have first end and the second end in the circumferential direction, described first arc-shaped magnets and described
Second arc-shaped magnets be arranged to the first end of described first arc-shaped magnets and the second end respectively with described second arc-shaped
The first end of Magnet and the second end are close to each other.
12. motors according to claim 9, wherein in described first arc-shaped magnets and described second arc-shaped magnets
One resin ring is fixed with outer peripheral face.
A kind of 13. digital light processing formula scialyscopes, including the motor described in claim 9, also include being driven by described motor
Colour wheel.
14. digital light processing formula scialyscopes according to claim 13, wherein said colour wheel has multiple in the circumferential direction
Color region and the multiple color boundary portions between two kinds of adjacent color regions, described colour wheel is fixed on described rotor and protects
Hold on frame, the described magnetic pole boundary portion of the described magnet unit of described motor and the one of described color boundary of described colour wheel
Portion in the circumferential direction alignment.
A kind of 15. motors, including rotary body and meront, described rotary body includes thering is cylindrical lateral wall and from described side wall
Top is radially oriented the rotor retainer of the top cover extending in inner side, and described meront includes magnetic position testing agency, and it is located at
Around described rotor retainer, for detecting the position of rotation of described rotor retainer,
It is characterized in that,
Described rotary body also includes the magnet unit on a radial outside for described side wall being arranged on described rotor retainer,
Described magnet unit is mutually close with described magnetic position testing agency, have in the circumferential direction two different magnetic poles of polarity and
A magnetic pole boundary portion between described two magnetic poles,
Wherein said magnet unit includes detached first arc-shaped magnets and the second arc-shaped magnets, described first arc-shaped magnetic
Ferrum has the first magnetic pole and second magnetic pole different from the first pole polarity, described second arc-shaped magnets along central axial direction
Along central axial direction there is the first magnetic pole and second magnetic pole different from the first pole polarity, described first arc-shaped magnets and
Described second arc-shaped magnets are arranged to the first magnetic pole of described first arc-shaped magnets and the second magnetic pole divides in the circumferential direction
Dui Ying not the second magnetic pole of described second arc-shaped magnets and the first magnetic pole；
Wherein said rotary body includes being arranged on the resin portion of the radial outside of described rotor retainer,
Described arc-shaped magnets cover its outer peripheral face by described resin portion, and are fixed to the described side wall of described rotor retainer
Outer peripheral face, at least a portion in the described magnetic pole boundary portion of described arc-shaped magnets exposes,
Described resin portion has the annulus of an outer peripheral face entirely around described rotor retainer.
16. motors according to claim 15, wherein said magnet unit is attached to described rotor by binding agent and keeps
The outer peripheral face of the side wall of frame.
17. motors according to claim 15, wherein said first arc-shaped magnets have in the circumferential direction first end and
Second end, described second arc-shaped magnets have first end and the second end, described first arc-shaped magnets and institute in the circumferential direction
State the second arc-shaped magnets be arranged to the first end of described first arc-shaped magnets and the second end respectively with described second circular arc
The first end of shape Magnet and the second end are close to each other.
18. motors according to claim 17, the first end of wherein said first arc-shaped magnets and described second circular arc
The first end of shape Magnet contacts with each other, thus forming described magnetic pole boundary portion in the contact position of the two；And described first circle
Second end of arcuation Magnet and the second end arranged for interval of described second arc-shaped magnets, thus form between one
Gap.
19. motors according to claim 18, wherein set on the outer peripheral face of described rotor retainer in described gap
Put a counterweight.
20. motors according to claim 15, wherein in described first arc-shaped magnets and described second arc-shaped magnets
Outer peripheral face on be fixed with a resin ring.
A kind of 21. digital light processing formula scialyscopes, including the motor described in claim 15, also include being driven by described motor
Colour wheel.
22. digital light processing formula scialyscopes according to claim 21, wherein said colour wheel has multiple in the circumferential direction
Color region and the multiple color boundary portions between two kinds of adjacent color regions, described colour wheel is fixed on described rotor and protects
Hold on frame, the described magnetic pole boundary portion of the described magnet unit of described motor and the one of described color boundary of described colour wheel
Portion in the circumferential direction alignment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110406447.5A CN103166415B (en) | 2011-12-08 | 2011-12-08 | Motor and the digital light processing formula scialyscope including this motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110406447.5A CN103166415B (en) | 2011-12-08 | 2011-12-08 | Motor and the digital light processing formula scialyscope including this motor |
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| Publication Number | Publication Date |
|---|---|
| CN103166415A CN103166415A (en) | 2013-06-19 |
| CN103166415B true CN103166415B (en) | 2017-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110406447.5A Expired - Fee Related CN103166415B (en) | 2011-12-08 | 2011-12-08 | Motor and the digital light processing formula scialyscope including this motor |
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| Country | Link |
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| CN (1) | CN103166415B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3115819B1 (en) * | 2014-03-05 | 2020-05-13 | LG Innotek Co., Ltd. | Lens driving device and camera module comprising same |
| CN104656351B (en) * | 2015-02-12 | 2016-08-24 | 苏州佳世达光电有限公司 | Scialyscope and the method removing colour wheel module dust |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6417587B1 (en) * | 1996-04-25 | 2002-07-09 | Sankyo Seiki Mfg. Co., Ltd. | Motor |
| CN1783671A (en) * | 2004-12-03 | 2006-06-07 | 日本电产三协株式会社 | Polygon mirror drive motor and laser mirror radiation device |
| CN101339352A (en) * | 2007-07-02 | 2009-01-07 | 中强光电股份有限公司 | Color wheel module and projection device possessing same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2905375B2 (en) * | 1993-10-20 | 1999-06-14 | 株式会社三協精機製作所 | Brushless motor |
-
2011
- 2011-12-08 CN CN201110406447.5A patent/CN103166415B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6417587B1 (en) * | 1996-04-25 | 2002-07-09 | Sankyo Seiki Mfg. Co., Ltd. | Motor |
| CN1783671A (en) * | 2004-12-03 | 2006-06-07 | 日本电产三协株式会社 | Polygon mirror drive motor and laser mirror radiation device |
| CN101339352A (en) * | 2007-07-02 | 2009-01-07 | 中强光电股份有限公司 | Color wheel module and projection device possessing same |
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| Publication number | Publication date |
|---|---|
| CN103166415A (en) | 2013-06-19 |
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