CN101499706B - Linear driving apparatus and lens driving apparatus - Google Patents
Linear driving apparatus and lens driving apparatus Download PDFInfo
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- CN101499706B CN101499706B CN2008100334721A CN200810033472A CN101499706B CN 101499706 B CN101499706 B CN 101499706B CN 2008100334721 A CN2008100334721 A CN 2008100334721A CN 200810033472 A CN200810033472 A CN 200810033472A CN 101499706 B CN101499706 B CN 101499706B
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Abstract
The invention provides a linear driving device and a lens driving device similar to the linear driving device, aiming at leading the driven body to be stable, to move according to the expected movement quantity, and not to generate a displacement even when the driven body is impacted. The device is characterized by comprising a box-shaped collar extension with a receiving space, a magnetic stone in the receiving space, and a coil in the receiving space and a magnetic body which generates a magnetic attraction force between the magnetic stones; wherein, the driven body to be driven bears the magnetic attraction force generally applied between the magnetic stone and the magnetic body; simultaneously, the electromagnetic force excited by a magnetic field formed by the action of the current flowing into the coil and the magnetic stone moves linearly.
Description
Technical field
The present invention relates to a kind of effect that relies on electromagnetic force and order about lens driver after being driven the linear drive apparatus that physical efficiency moves as linear pattern and having adopted this linear drive apparatus.
Background technology
Generally speaking, act on mutually by the electric current by coil and the magnetic field of magnetite formation and cause electromagnetic force and order about driving body to make this linear drive apparatus of linear drives be well-known.In addition, it also is being widely used in each technical field.For example, be built in inside such as digital camera or mobile phone, for realizing on the portable type minicam used Zoom lens and can driving to just having used this small-sized linear drive apparatus (referring to Japanese 2002-23037 patent gazette) in the lens driver of purpose focus lens automatically.
; at the lens driver that is used on portable type minicam etc.; though be necessary to make lens stable and correctly move in narrow space to optical axis direction by desirable amount of movement; but as by adopting above-mentioned small linear to drive device, only simple whereby structure just wants to realize that it is difficult.
Also have, under the more situations such as general this kind minicam be can be placed in pocket or the parcel going along with and go, so minicam is in carrying the way (during non-use), lens driver can suffer some to jolt or impact often, rock for this kind and to jolt, be used for by electromagnetic force driving in the above-mentioned linear drive apparatus of lens, its lens supports body is easy to and can be impacted, therefore, consider that the lens that correctly are positioned can be by dislocation skew this point.
Summary of the invention
The present invention is conceived to above-mentioned situation and generates, its purpose just is to provide a kind of linear drive apparatus with very strong confining force, this linear drive apparatus can stably and can correctly carry out mobile driven member by desirable amount of movement, the dislocation skew can not take place in the position of driven member yet under the situation of being impacted simultaneously, the present invention also aims to provide a kind of lens driver that is similar to this linear drive apparatus.
In order to realize described purpose, linear drive apparatus of the present invention is characterized in having: be the collar extension of the receiving space of box-shaped, be disposed at the magnetite in the receiving space, be disposed at the coil in the receiving space, and the magnetic that forms the magnetism what it takes between the magnetite; Wherein, driven driven member is subjected to one constantly and acts on magnetism what it takes between magnetite and the magnetic, simultaneously because the electromagnetic force that cause in the electric current that flows into coil and the magnetic field of magnetite effect formation and moving by linear pattern.
Driven member is subjected to one constantly and acts on magnetism what it takes between magnetite and the magnetic, flows into the effect of the electromagnetic force that causes in the electric current of coil and magnetic field that magnetite forms simultaneously and moves as straight line.So,, can not only prevent because the displacement of driven member when being subjected to impacting, also can make simultaneously driven member stable and carry out correct moving by desirable amount of movement if driven member is subjected to attraction force acts constantly.That is to say, given driven member good retentivity and maneuverability, even the occasion of jolting or impacting in generation also be difficult to cause the driven member vibration to rock, thereby it is rich in good impact.
Linear drive apparatus of the present invention, its improvement that can carry out is: magnetite is fixed in collar extension; Coil is when keeping magnetic, its is subjected on the one hand constantly one and acts on this magnetic that has kept and the magnetism what it takes between the magnetite, and the electric current that flows into coil on the other hand acts on mutually with the magnetic field of magnetite formation and the electromagnetic force that causes makes coil play effect as a driven member that moves by straight line.So, after being subjected to electromagnetic force, become a driven driven member, just need not in addition a driven member to be set separately again, thus, can try hard to make linear drive apparatus integral body to reach miniaturization if form the coil of electromagnetic force itself.
Linear drive apparatus of the present invention, it further improves and is: can further include the guide piece that the guiding coil moves as straight line.Owing to be provided with the guide piece that further guiding coil moves as straight line, linear drive apparatus can make coil make stable straight line and move.
Linear drive apparatus of the present invention, it further improves and is: guide piece is by the guide rail that is fixed in collar extension, holding coil and can constitutes with the chimeric sliding part material of guide rail sliding.Because its guide piece is by the guide rail that is fixed in collar extension, holding coil and can constitutes with the chimeric sliding part material of guide rail sliding that coil can be stablized and smooth moving.
Linear drive apparatus of the present invention, the another kind of improvement is: coil stationary is on collar extension, and the part of collar extension forms magnetic at least simultaneously; Magnetite one side is subjected to one magnetism what it takes that acts on constantly between the above-mentioned magnetic of a collar extension part and magnetite, the electric current that one side flows into coil acts on the electromagnetic force that causes mutually with the magnetic field of magnetite formation makes magnetite play effect as a driven member that moves by straight line.Coil stationary is on collar extension, and the part of collar extension forms magnetic at least simultaneously, and magnetite then plays the function effect as a driven member that moves by straight line.So, originally after being subjected to electromagnetic force, become a driven driven member, just need not in addition a driven member to be set separately again if form the magnetite of electromagnetic force.Thus, can try hard to make linear drive apparatus integral body to reach miniaturization.In addition,, just need not to set separately in addition again magnetic, can try hard to make linear drive apparatus integral body to reach miniaturization because the part of collar extension has formed magnetic at least.
Linear drive apparatus of the present invention, it further improves and is: possessed the guide piece that the guiding magnetite moves as straight line.Because also be provided with the effect that is provided with of the straight line mobile guide device of guiding magnetite, magnetite can stably move as straight line.
Linear drive apparatus of the present invention, it further improves and is: guide piece is by the guide rail that is fixed in collar extension, keeps magnetite and can constitute with the chimeric sliding part material of guide rail sliding.Since guide piece it by the guide rail that is fixed in collar extension, keep magnetite and can constitute, so magnetite can be stablized and move as straight line glibly with the chimeric sliding part material of guide rail sliding.
According to aforesaid linear drive apparatus of the present invention, it further improves: magnetite is by the moving direction along driven member, the a plurality of magnetite portion of being got up by arranged in series constitutes, and the adjacent magnetite portion polarity each other of arranging on these directions is different.Because magnetite is by the moving direction along driven member, the a plurality of magnetite portion of being got up by arranged in series constitutes, and the adjacent magnetite portion polarity each other of arranging on these directions is different, in the total length of the mobile alignment of driven member, can form the electromagnetic force (thrust) of equidirectional usually, can realize that good straight line moves.
Lens driver of the present invention is characterized in: comprise aforesaid any linear drive apparatus, this linear drive apparatus can make lens move along optical axis direction.Because the electromagnetic force that produces is ordered about lens and is moved as straight line on optical axis direction behind the coil electricity, and the direction of thrust is consistent with the direction that lens move, thereby, dropped to driving loss minimum.Its result has accelerated the translational speed of lens, has improved its responsiveness.In other words, because drive loss reduces, good responsiveness and maneuverability have been given.Like this, just can make lens in narrow space, carry out moving effectively at optical axis direction, be fit to be equipped on the minicam by desirable amount of movement.In addition, according to the feature of above-mentioned linear drive apparatus,, therefore can satisfy fully the fixedly requirement of multiplying power in the delicate action of focus lens etc. and the Varifocal lens etc. because lens are rich in good retentivity and maneuverability.
Lens driver of the present invention, its improvement that can carry out is: it has the lens supports body of support of lens the driven member of linear drive apparatus.
Lens driver of the present invention, it further improves: have a pair of linear drive apparatus, also have simultaneously and keep this a pair of linear drive apparatus in the casing of state in opposite directions, the lens supports body of each linear drive apparatus is from shape along optical axis direction to each other locatees.It has the lens supports body of support of lens the driven member of linear drive apparatus.Owing between driven member and lens support, do not get involved driving force reception and registration portion material, thereby can accomplish lens driver small-sized and substantial in content.
Lens driver of the present invention, it further improves: have a pair of linear drive apparatus, also have simultaneously and keep this a pair of linear drive apparatus in the casing of connection status side by side, the lens supports body of each linear drive apparatus is from shape along optical axis direction to each other locatees.Because being from shape along optical axis direction to each other, the lens supports body of a pair of linear drive apparatus locatees.For example, if each lens supports body reaches Zoom lens respectively focus lens is supported, a kind of small-sized and full-blooded device that has both auto-focus structure and magnification transformable function just is born.
Description of drawings
Fig. 1 (a) is the cross-sectional view of the linear drive apparatus of relevant first embodiment of the invention; Fig. 1 (b) is the longitudinal section of the linear drive apparatus of relevant first embodiment.
Fig. 2 is the decomposition diagram of the linear drive apparatus among Fig. 1.
Fig. 3 is the perspective diagram of a kind of assembling sequence of the linear drive apparatus among Fig. 1.
Fig. 4 (a) is the cross-sectional view of the linear drive apparatus of relevant second embodiment of the invention; Fig. 4 (b) is the longitudinal section of the linear drive apparatus of relevant second embodiment.
Fig. 5 is the decomposition diagram of the linear drive apparatus among Fig. 4.
Fig. 6 is the perspective diagram of a kind of assembling sequence of the linear drive apparatus among Fig. 4.
Fig. 7 makes first schematic exploded perspective view of the lens driver that lens move along optical axis direction according to the linear drive apparatus among Fig. 1 to Fig. 6.
Fig. 8 (a) is the assembling stereogram that the lens driver among Fig. 7 presents when upper position is observed; Fig. 8 (b) is the assembling stereogram that the lens driver among Fig. 7 presents when the orientation is observed down;
Fig. 9 makes second schematic exploded perspective view of the lens driver that lens move along optical axis direction according to the linear drive apparatus among Fig. 1 to Fig. 6.
Figure 10 (a) is the assembling stereogram that the lens driver among Fig. 9 presents when upper position is observed;
Figure 10 (b) is the assembling stereogram that the lens driver among Fig. 9 presents when the orientation is observed down.
Embodiment
Below, please refer to the figure trimming embodiments of the invention are illustrated.
First embodiment
Fig. 1 to Fig. 3 is the synoptic diagram of first embodiment of the invention.Also have, Fig. 1 (a) is the sectional view of the linear drive apparatus 1 of present embodiment; Fig. 1 (b) is the vertical face figure of the linear drive apparatus 1 of present embodiment; Fig. 2 is the decomposition diagram of the linear drive apparatus 1 of Fig. 1; Fig. 3 is one of an assembling sequence perspective exemplary plot of the linear drive apparatus 1 of Fig. 1.
The linear drive apparatus 1 of relevant present embodiment is a kind of linear drive apparatus of coil movable type.Linear drive apparatus 1 has a pair of collar extension 2,4 that interacts and form with the receiving space S of box, is disposed at the magnetite 6 in the receiving space S, and is disposed at the coil 8 in the receiving space S.Under this kind occasion, the 1st collar extension 2 of one of them is tabular; In addition, another the 2nd collar extension 4 its cross sections are the character cut in bas-relief shape.
Flowing into the electric current of coil 8 and the electromagnetic force of magnetite 6 formation magnetic fields initiations makes coil 8 play the function effect as a driven member that moves by linear pattern.In addition, coil 8 has kept forming the magnetic 10 (being a pair of iron plate in the present embodiment) of magnetism what it takes between magnetite 6.Such as previously described, its one side constantly is subjected to the effect of one attractive force, and another side is because the effect of electromagnetic force is ordered about it moves as straight line.
Magnetite 6 is fixed on the 1st collar extension 2, and it has constituted a pair of 6A of magnetite portion that is connected and get up side by side, 6B along the moving direction of coil 8 simultaneously.These 6A of magnetite portion and 6B, the polarity of its surface and inner face is mutually different.In addition, the 6A of magnetite portion, even if the polarity of 6B also is different at adjacent surface each other.
In addition, in the present embodiment, be provided with the straight line mobile guide device of coil 8.Described guide piece is by the pair of guide rails 12A on the both sides of the edge of being fixed in the 1st collar extension 2 specifically, 12B and holding coil 8 and can with guide rail 12A, the sliding part material 14 that 12B can be chimeric slidably.In this case, at each guide rail 12A, among the 12B, form recess 20 along its total length; Simultaneously in sliding part material 14, projection 22 is seized coil 8 on both sides by the arms from both sides, is formed with the protuberance 24 chimeric with recess 20 along its projection 22 total lengths.So, in the present embodiment, magnetite 6 just need not to be the outstanding shape that is provided with, and can be accommodated the location between guide rail 12A and 12B.
In above-mentioned structure, get involved the lead 28 that electric property continues in the coil 8, as in a single day in coil 8, feeding electric current, cause the electromagnetic force effect according to the magnetic field of its electric current and magnetite 6 formation, 8 of coils can move as straight line along the also column direction of 6A of magnetite portion and 6B.In addition, coil 8 is no matter when it moves or under the state in when stopping, and all constantly can be subjected to one and get involved magnetic 10 backs from magnetite 6 and the magnetism what it takes that comes.Therefore, just should produce above slip sheet material 14 and guide rail 12A, the thrust of the chimeric friction force of 12B (electromagnetic force) according to this attractive force; If adjust the size of inflow coil 8 electric currents or the magnetic force of magnetite 6, be subjected to the working coil 8 of attractive force can do moving of magnetism constantly.
As described above, in the linear drive apparatus 1 of present embodiment, driven member (coil 8) constantly is subjected to one and acts on magnetism what it takes between magnetite 6 and the magnetic 10, and its work by electromagnetic force is moved as straight line.So,, be subjected to this attraction force acts often for driven member, the driven member displacement that causes in the time of can preventing to impact, moving also of driven member stablized simultaneously, guarantees to be driven physical efficiency and carries out correct moving by desirable amount of movement.That is to say, given driven member good retentivity and maneuverability.Even if under the situation of being jolted or impacting, also be difficult to cause vibration to rock to driven member, thereby possess good resistance to impact.
In addition, in the linear drive apparatus 1 of present embodiment, magnetite 6 is fixed on the 1st collar extension 2; Coil 8 on the one hand when keeping magnetic 10, on the other hand, the driven member that moves as linear pattern and play function.So, after being subjected to electromagnetic force, become a driven driven member, just need not in addition a driven member to be set separately again, thus, can try hard to make linear drive apparatus integral body to reach miniaturization if form 8 of the coils of electromagnetic force.
In addition, in the linear drive apparatus 1 of present embodiment,, coil 8 is stably moved because the guide piece that guiding coil 8 moves as straight line is set.Especially, in the present embodiment, its guide piece is by the guide rail 12A that is fixed on the 1st collar extension 2,12B and holding coil 8 and can with guide rail 12A, the chimeric sliding part material of 12B sliding 14 constitutes, so can make coil 8 stable and move glossily.
In addition, in the linear drive apparatus 1 of present embodiment, magnetite 6 is by the moving direction along driven member, and by the 6A of several magnetite portions that arranged in series is got up, 6B constitutes; Because the adjacent magnetite 6A of portion that arranging on these directions, 6B polarity each other is different, so can form all same electromagnetic force of common direction (thrust) on the total length of the mobile alignment of driven member, realizes that good straight line moves.
Second embodiment
Fig. 4 to Fig. 6 is a second embodiment of the present invention synoptic diagram.Also have, Fig. 4 (a) is the sectional view of the linear drive apparatus 1A of present embodiment; Fig. 4 (b) is the longitudinal section of the linear drive apparatus 1A of present embodiment; Fig. 5 is the decomposition diagram of Fig. 4 linear drive apparatus 1A; Fig. 6 is one of the assembling sequence perspective exemplary plot of the linear drive apparatus 1A of Fig. 4.
The linear drive apparatus 1A of relevant present embodiment is the linear drive apparatus of magnetite movable type.Linear drive apparatus 1A has the back a pair of collar extension 32,34 that forms of receiving space S interaction with box; Be disposed at the magnetite 36 in the receiving space S; Be disposed at the coil 38 in the receiving space S.In this case, the 1st collar extension 32 its cross sections of one of them are the character cut in bas-relief shape; In addition, another the 2nd collar extension 34 is tabular.Also have, the 2nd collar extension 34 manufactures as form the magnetic of magnetism what it takes between magnetite 36.In addition, coil 38 is fixed on the 1st collar extension 32.
The electric current that flows into coil 38 and magnetite 36 act on the electromagnetic force that the magnetic field of formation causes mutually makes magnetite 36 play effect as a driven member that moves by linear pattern.At this moment, magnetite 36 constantly is subjected to one as formed attraction force acts between the 2nd collar extension 34 of magnetic on the one hand; On the other hand because magnetite 36 is ordered about in the effect of described electromagnetic force moves as straight line.In addition, magnetite 36 is by a pair of 36A of magnetite portion that is fixed up that is arranged along its moving direction, and 36B constitutes.These 36A of magnetite portion and 36B, the polarity of its surface and inner face is different.In addition, the 36A of magnetite portion, the polarity of 36B is also different each other at adjacent surface.
In addition, in the present embodiment, be provided with the guide piece that guiding magnetite 36 moves as straight line.Specifically, described guide piece has the pair of guide rails 42A that is fixed on the 2nd collar extension 34 both sides of the edge, 42B and keep magnetite 36 from both sides and with guide rail 42A, 42B slidably a pair of sliding part material 44A, the 44B of sex-mosaicism constitutes.In this case, at each guide rail 42A, among the 22B,, simultaneously in sliding part material 44A, 44B, formed the protuberance 54 chimeric with recess 50 along its total length along forming recess 50 on its total length.So, in the present embodiment, the part of magnetite 36 is positioned after just being accommodated between the guide rail 12A and 12B.
In above-mentioned structure, on coil 38, get involved the lead that electric property ground is continued; In case feed electric current to coil 38, because forming the action of a magnetic field, its electric current and magnetite 36 cause electromagnetic force, make magnetite 36 move as straight line along the orientation of 36A of magnetite portion and 36B.In addition, magnetite 36 is no matter under the state when mobile or when stopping, and always is subjected to the magnetism what it takes effect that the 2nd collar extension 34 as magnetic is produced usually.Therefore, the thrust (electromagnetic force) that attractive force produced thus should exceed slip board material 44A, 44B and the chimeric friction force of guide rail 42A, 42B; If the size of current of inflow line circle 38 or the magnetic force of magnetite 36 are adjusted, will be subjected to the effect of attractive force constantly, magnetite 36 is moved with being able to magnetism.
Just as described above, in the linear drive apparatus 1A of present embodiment, coil 38 is fixed on the 1st collar extension 32, and simultaneously at least a portion of the 2nd collar extension 34 forms magnetic, magnetite 36 as the driven member that moves of linear pattern play function.So, after being subjected to electromagnetic force, constituted a driven driven member, just need not in addition a driven member to be set separately again if form 36 of the magnetites of electromagnetic force.Thus, can try hard to make linear drive apparatus integral body to reach miniaturization.In addition, because at least a portion of the 2nd collar extension 34 forms magnetic, just need not in addition a magnetic to be set separately again.Thus, can try hard to make linear drive apparatus integral body further to be tending towards miniaturization.
Also have,, owing to be provided with the guide piece that guiding magnetite 36 moves as straight line, move as linear pattern so magnetite can be stable according to the linear drive apparatus 1A of present embodiment.Particularly in the present embodiment, guide piece be by the guide rail 42A, the 42B that are fixed in the 2nd collar extension and keep magnetite 36 and can with guide rail 42A, chimeric sliding part material 44A, the 44B of 42B sliding constitutes, so can make magnetite 36 stablize and move swimmingly.
In Fig. 7 and Fig. 8, show a kind of according to above-mentioned linear drive apparatus 1,1A, the lens driver 60 that lens are moved along optical axis direction.As shown in the figure, this lens driver 60 has the paired coil movable type linear drive apparatus 1 or the linear drive apparatus 1A of magnetite movable type.These paired combinations are by between the linear drive apparatus of the same type 1 or by combining between the linear drive apparatus 1A; Perhaps also can constitute mutually with linear drive apparatus 1A by dissimilar linear drive apparatus 1.In addition, lens driver 60 has and makes this a pair of linear drive apparatus 1,1 or linear drive apparatus 1A, 1A or linear drive apparatus 1,1A keep the casing 62 of state in opposite directions.
Also has each linear drive apparatus 1,1 (1A, 1A; 1, the lens supports body 65 that driven member 1A) (coil or magnetite) has support of lens.Under this occasion, each linear drive apparatus 1,1 (1A, 1A; 1, lens supports body 65,65 1A) is from shape along optical axis direction each other locatees.
So, according to the linear drive apparatus of above-mentioned structure lens are moved along optical axis direction, order about lens and move as straight line on optical axis direction owing to produce the electromagnetic force effect behind the coil electricity, the direction of thrust and lens moving direction are reached an agreement.Therefore, drive loss is few.Its result has accelerated the translational speed of lens, has improved it and has replied performance.That is to say, to be rich in good responsiveness and maneuverability in other words, can make lens in narrow space, on optical axis direction, be undertaken effectively moving, so, just be fit to be equipped on the minicam by desirable amount of movement because drive loss has been lacked.In addition, according to the above-mentioned feature of linear drive apparatus, owing to given lens good retentivity and maneuverability, therefore can satisfy the fixedly requirement of multiplying power in the delicate action of punktal lens etc. and the Varifocal lens etc. fully.
In addition, in this structure, the driven member of linear drive apparatus has the lens support of support of lens.Owing to do not had the driving force reception and registration portion material between driven member and lens support, thereby can realize out small-sized and full-blooded lens driver.
In addition, in this structure, because the lens supports body 65,65 of a pair of linear drive apparatus is set from shape each other along the position of optical axis direction each other.If each lens supports body 65,65 reaches Zoom lens respectively and automatically focus lens supported, a kind of small-sized and abundant device that has both auto-focus structure and magnification transformable function just is born.In Fig. 9 and Figure 10,, show the lens driver 70 that makes other form that lens move along optical axis direction according to the above-mentioned linear drive apparatus that arrives 1,1A.As shown in the figure, its lens driver 70 has the linear drive apparatus 1 of a pair of coil movable type or the linear drive apparatus 1A of a pair of magnetite movable type.The combination of these paired shapes, can linear drive apparatus of the same type 1 each other or linear drive apparatus 1A carry out each other; Perhaps, combine also passable by type different linear drive apparatus 1 and linear drive apparatus 1A.In addition, lens driver 60 it have and make this a pair of linear drive apparatus 1,1 (1A, 1A; 1,1A) remains in the casing 72 of connection status side by side.
Also has each linear drive apparatus 1,1 (1A, 1A; 1, the lens supports body 65 that driven member 1A) (coil or magnetite) has support of lens.This occasion, each linear drive apparatus 1,1 (1A, 1A; 1, lens supports body 65,65 1A) is from shape in the position of optical axis direction to each other locatees.Even if this structure also can have the action effect identical with the structure of Fig. 7 and Fig. 8.
Also have, need not speak more, the present invention is not limited to the above embodiments, only otherwise breaking away from its purport scope can do to be implemented after all distortion.For example, in the structure of above-mentioned Fig. 7 to Figure 10, though linear drive apparatus is used to above lens drive, linear drive apparatus of the present invention for example also can be used in the various fields such as printhead, semiconductor-fabricating device.In addition, in the linear drive apparatus of the foregoing description, keep mobile, will further strengthen the stability of driven member, will become more suitable if driven member waits by spring.
Claims (12)
1. linear drive apparatus is characterized in that comprising:
Collar extension has the receiving space that is box-shaped;
Magnetite is disposed in the receiving space;
Coil is disposed in the receiving space; And
Magnetic forms the magnetism what it takes with magnetite;
Wherein, when the driven member that is driven by this linear drive apparatus is subjected to one constantly and acts on magnetism what it takes between magnetite and the magnetic, thereby come to move by linear pattern by the electromagnetic force that acts on initiation through the electric current of coil and magnetic field that magnetite forms mutually.
2. linear drive apparatus as claimed in claim 1, it is characterized in that: magnetite is fixed in collar extension; Coil is when keeping magnetic, constantly be subjected to one and act on magnetism what it takes between maintained magnetic and the magnetite, thereby and play a part the driven member that moves by straight line because the electric current that flows into coil and the magnetic field of magnetite formation act on the electromagnetic force that causes mutually.
3. linear drive apparatus as claimed in claim 2 is characterized in that: also comprise the guide piece that the guiding coil moves as straight line.
4. linear drive apparatus as claimed in claim 3 is characterized in that: guide piece comprises the guide rail that is fixed in collar extension, and holding coil and sliding part material that can be chimeric with the guide rail sliding.
5. linear drive apparatus as claimed in claim 1 is characterized in that: coil stationary is on collar extension, and the part of collar extension has formed magnetic at least simultaneously; Magnetite is subjected to one magnetism what it takes on the one hand constantly, and this magnetism what it takes acts on the described magnetic of forming collar extension, on the other hand owing to flow into the magnetic field of the electric current of coil and magnetite formation and act on mutually and cause electromagnetic force and play a part the driven member that moves by straight line.
6. linear drive apparatus as claimed in claim 5 is characterized in that: also comprise the guide piece that the guiding magnetite moves as straight line.
7. linear drive apparatus as claimed in claim 6 is characterized in that: guide piece comprises the guide rail that is fixed in collar extension, and keeps magnetite and sliding part material that can be chimeric slidably with guide rail.
8. as claim 1 described linear drive apparatus of each claim to the claim 7, it is characterized in that: magnetite is by the moving direction along driven member, and several magnetite portions of being got up by arranged in series constitute; The adjacent magnetite portion polarity each other of arranging on moving direction is different.
9. lens driver is characterized in that: comprise that this linear drive apparatus makes lens move along optical axis direction as claim 1 described linear drive apparatus of each claim to the claim 8.
10. lens driver as claimed in claim 9 is characterized in that: the driven member of linear drive apparatus has the lens supports body of support of lens.
11. lens driver as claimed in claim 10, it is characterized in that: when comprising a pair of linear drive apparatus, also have and keep this a pair of linear drive apparatus in the casing of state in opposite directions, the lens supports body of each linear drive apparatus is from shape along optical axis direction each other locatees.
12. lens driver as claimed in claim 10 is characterized in that: when comprising a pair of linear drive apparatus, also have this a pair of linear drive apparatus of maintenance in the casing of connection status side by side; The lens supports body of each linear drive apparatus is from shape along optical axis direction each other locatees.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100334721A CN101499706B (en) | 2008-02-03 | 2008-02-03 | Linear driving apparatus and lens driving apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100334721A CN101499706B (en) | 2008-02-03 | 2008-02-03 | Linear driving apparatus and lens driving apparatus |
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| CN101499706A CN101499706A (en) | 2009-08-05 |
| CN101499706B true CN101499706B (en) | 2011-09-28 |
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| JP5540188B2 (en) * | 2009-10-29 | 2014-07-02 | 新シコー科技株式会社 | Linear drive |
| US11105962B2 (en) * | 2018-01-25 | 2021-08-31 | Tdk Taiwan Corp. | Optical system and control method for the optical system |
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Owner name: XINSIKAO ELECTRIC MOTOR CO., LTD. Free format text: FORMER OWNER: SIKAO ELECTRIC MOTOR (SHANGHAI) CO., LTD. Effective date: 20150626 |
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Effective date of registration: 20150626 Address after: 314112 Jiashan City, Jiaxing province Huimin County Street, No., Jia Jia Road, building 3, 1 floor, 58 Patentee after: New math courses Electric Machine Co., Ltd Address before: 201613 No. 38 Teng Teng Road, Songjiang District export processing zone, Shanghai, China Patentee before: Shicoh Motor (Shanghai) Co., Ltd. |