CN102565993A - Driver, camera module, and portable electronic device - Google Patents
Driver, camera module, and portable electronic device Download PDFInfo
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- CN102565993A CN102565993A CN2010105768584A CN201010576858A CN102565993A CN 102565993 A CN102565993 A CN 102565993A CN 2010105768584 A CN2010105768584 A CN 2010105768584A CN 201010576858 A CN201010576858 A CN 201010576858A CN 102565993 A CN102565993 A CN 102565993A
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Abstract
A driver comprises a fixed tube and a movable tube, a piezoelectric driving component, a flexible circuit board, a reinforcing plate and a prepressing component, wherein the fixed tube as well as the movable is provided with two open ends; the movable tube is movably accommodated in the first accommodating cavity of the fixed tube and is coaxial with the central shaft of the first accommodating cavity; the piezoelectric driving component comprises a piezoelectric element on the side wall of the fixed tube, and a friction element fixed in the movable tube and opposite to the piezoelectric element; the flexible circuit board is arranged on the outer side of the fixed tube and electrically connected with the piezoelectric element; the reinforcing plate encompasses the flexible circuit board and is used for fixing the piezoelectric element on the side wall of the fixed tube; the prepressing component is arranged between the fixed tube and the movable tube, is opposite to the piezoelectric driving component, and enables the friction element and the piezoelectric element to be in contact with each other through exerting precompression on the movable tube; and when deformed after being electrified, the piezoelectric element drives the friction element in virtue of friction to drive the movable tube to move relative to the fixed tube along the center shaft of the fixed tube. The invention further provides a camera module with the driver, and a portable electronic device with the camera module.
Description
Technical field
The present invention relates to a kind of driver, relate in particular to a kind of energy loss less and be suitable for miniaturization development driver, have the camera module of this driver and have the portable electron device of this camera module.
Background technology
The develop rapidly of photoelectric technology and precision processing technology, and consumer's request for utilization constantly increases, and makes that the portable electron devices such as digital camera, mobile phone or notebook computer with automatic focusing shoot function are universal day by day.
At present, what have that the portable electron device of automatic focusing shoot function generally adopts is the electromagnetic induction motor, like voice coil motor, step motor etc.The electromagnetic induction motor has big, the power advantages of higher of moment, and the overall technology development is comparatively ripe.But the electromagnetic induction motor exists power consumption height, complex structure, is difficult to shortcomings such as microminiaturization.Therefore, harsh day by day along with consumer's request for utilization, the electromagnetic induction motor will be difficult to adapt to portable electron device towards energy-conserving and environment-protective, microminiaturized direction Development Trend.
Summary of the invention
In view of this, be necessary to provide that a kind of energy loss is less, the driver that is suitable for the miniaturization development, have the camera module of this driver and have the portable electron device of this camera module.
A kind of driver, it comprises the stationary magazine creel of a both ends open, the movable tube of a both ends open, a Piezoelectric Driving assembly, a flexible PCB, a reinforced sheet and a preload component.Said stationary magazine creel has first host cavity that runs through its two ends.Said movable tube is contained in said first host cavity central shaft of said movable tube and the spigot shaft coaxle of said first host cavity versatilely.Said Piezoelectric Driving assembly comprises a piezoelectric element and a friction member, and said piezoelectric element is arranged at the sidewall of said stationary magazine creel, and said friction member is fixed in said movable tube and relative with said piezoelectric element.Said flexible PCB is arranged at the outside of said stationary magazine creel and electrically connects with said piezoelectric element.Said reinforced sheet is fixed in the sidewall of said stationary magazine creel around said flexible PCB and with said piezoelectric element.Said preload component is arranged between said stationary magazine creel and the said movable tube and is relative with said Piezoelectric Driving assembly, and said preload component applies a precompression in said movable tube, and said friction member and said piezoelectric element are in contact with one another.Deformation takes place in said piezoelectric element energising back, and the said friction member of said piezoelectric element friction-driven drives said movable tube and moves with respect to said stationary magazine creel along its central shaft.
A kind of camera module comprises a lens barrel and a supporting seat, and said supporting seat is provided with an image sensor.Said camera module further comprises an above-mentioned driver; Said driver is arranged on the said supporting seat and is positioned at the top of said image sensor; Said lens barrel is contained in the movable tube of said driver; Said image sensor is positioned on the optical axis of said lens barrel, and said driver is used to drive said lens barrel and moves to realize focusing.
A kind of portable electron device, it comprises a body and an above-mentioned camera module, said camera module is arranged on the said body.
With respect to prior art, the driving implement that the embodiment of the invention provides has following advantage: one of which, and said driver applies acting force in movable tube through preload component wherein; The friction member and the piezoelectric element that are fixed in movable tube are in contact with one another; When deformation takes place in piezoelectric element energising back, can move with respect to stationary magazine creel along its central shaft by friction-driven friction member drive activity tube, thus; Can reduce the loss that drives energy, help energy-conserving and environment-protective.Its two, said actuator assembly is simpler, piezoelectric element wherein is arranged at the sidewall of stationary magazine creel; And utilize reinforced sheet to fix; Effectively utilize the horizontal space of stationary magazine creel, made that the structure of said driver is compact, be suitable for small-sized or microminiaturized development trend.Its three, the camera modular structure with said driver is compact, volume is less, is convenient to simplify the portable electron device that disposes said camera module, makes that the structure of corresponding portable electron device is compact, volume is less, improves its portability effectively.
Description of drawings
Fig. 1 is the synoptic diagram of the driver that provides of first embodiment of the invention.
Fig. 2 is the decomposing schematic representation of driver shown in Figure 1.
Fig. 3 is the decomposing schematic representation at another visual angle of driver shown in Figure 1.
Fig. 4 is the synoptic diagram of the camera module with driver shown in Figure 1 that provides of second embodiment of the invention.
Fig. 5 is the decomposing schematic representation of camera module shown in Figure 4.
Fig. 6 is the synoptic diagram of the portable electron device with camera module shown in Figure 4 that provides of third embodiment of the invention.
The main element symbol description
Stationary magazine creel 10
The first side wall 13
The 3rd sidewall 15
The 4th sidewall 16
The 5th sidewall 23
The 6th sidewall 24
The 8th sidewall 26
First magnetic element 41
Second magnetic element 42
The 3rd magnetic element 53
Flexible PCB 60
Reinforced sheet 70
First accepting groove 131
Second accepting groove 141
The 3rd accepting groove 151
First pin-and-hole 171
Second groove 241
The 3rd groove 251
Second pin-and-hole 271
Supporting seat 290
Portable electron device 300
Friction part 311
Body 380
Embodiment
To combine accompanying drawing and embodiment that the present technique scheme is done further explain below.
See also Fig. 1 to Fig. 3 in the lump, the driver 100 that first embodiment of the invention provides.Said driver 100 comprises 50, one flexible PCBs 60 of 10, one movable tube 40, one detection components of 30, one preload components of 20, one Piezoelectric Driving assemblies of a stationary magazine creel, and a reinforced sheet 70.
Said stationary magazine creel 10 is as the integral support of said driver 100; Be used to accommodate said movable tube 20, and cooperate said movable tube 20 to install to be provided with said Piezoelectric Driving assembly 30, said preload component 40, said detection components 50, said flexible PCB 60 and said reinforced sheet 70.Said movable tube 20 is used to accommodate by actuator, like lens barrel.Said Piezoelectric Driving assembly 30 is used to drive said movable tube 20 and moves with respect to said stationary magazine creel 10.Said preload component 40 cooperates said Piezoelectric Driving assembly 30, makes said Piezoelectric Driving assembly 30 can realize its driving purposes effectively.Said detection components 50 is used to detect the displacement of said movable tube 20.Said flexible PCB 60 is the electric currents of said driver 100 supplies from power delivery.Said reinforced sheet 70 is used for fixing the piezoelectric element 31 in the said Piezoelectric Driving assembly 30, and retrains the deformation direction of said piezoelectric element 31, so that said piezoelectric element 31 is towards the direction deformation of expection.Simultaneously, said reinforced sheet 70 can improve the structural strength of said driver 100 effectively.
Said stationary magazine creel 10 is the structure of both ends open, and it has one first host cavity 11, and said first host cavity 11 runs through the two ends of said stationary magazine creel 10.In the present embodiment, said stationary magazine creel 10 is a rectangular structure, and its cross section is a square.Said first host cavity 11 structure that roughly is rectangle.Said stationary magazine creel 10 has 14, one the 3rd sidewalls 15 of 13, one second sidewalls of an end to end successively the first side wall and one the 4th sidewall 16.Said the first side wall 13, said the 3rd sidewall 15, said second sidewall 14, and said the 4th sidewall 16 around first host cavity 11 that forms said stationary magazine creel 10.Said the first side wall 13 is relative with said second sidewall 14, and said the 3rd sidewall 15 is relative with said the 4th sidewall 16.Said stationary magazine creel 10 also has one and is parallel to said the first side wall 13, said the 3rd sidewall 15, said second sidewall 14, and the central shaft of said the 4th sidewall 16.Said the first side wall 13 offers one first accepting groove 131.Said second sidewall 14 offers one second accepting groove 141.Said the 3rd sidewall 15 offers one the 3rd accepting groove 151.Said first accepting groove 131 runs through said the first side wall 13 and connects with said first host cavity 11.Said second accepting groove 141 is relative with said first accepting groove 131, and said second accepting groove 141 runs through said second sidewall 14 and connects with said first host cavity 11.The said the first side wall 13 of said the 3rd accepting groove 151 deflections, said the 3rd accepting groove 151 runs through said the 3rd sidewall 15 and connects with said first host cavity 11.The edge at said stationary magazine creel 10 1 end opening places is provided with first flange 17 of the sheet of court's said first host cavity 11 extensions.In the present embodiment, the corner that said first flange 17 intersects near said the 4th sidewall 16 and said the first side wall 13, said first flange 17 is equal with the upper surface of said stationary magazine creel 10 and perpendicular to the central shaft of said first host cavity 11.Said first flange 17 is provided with one first pin-and-hole 171, and said first pin-and-hole 171 runs through said first flange 17, and the central axes of said first pin-and-hole 171 is in the central shaft of said first host cavity 11.Said first pin-and-hole 171 is equipped with a guide finger 18, to be equipped with said movable tube 20.
It is understandable that; The structure of said stationary magazine creel 10 is not limited to present embodiment; According to actual needs; Said stationary magazine creel 10 also can be designed as cylindrical structure, correspondingly, and the different piece in the circle wall that said the first side wall 13, said second sidewall 14, said the 3rd sidewall 15 and said the 4th sidewall 16 are said stationary magazine creel 10.
Said movable tube 20 is the structure of both ends open; The shape of the outline of said movable tube 20 and first host cavity 11 of said stationary magazine creel 10 is complementary; Said movable tube 20 is contained in said first host cavity 11 versatilely, and the spigot shaft coaxle of first host cavity 11 of the central shaft of said movable tube 20 and said stationary magazine creel 10.Said movable tube 20 has one second host cavity 21.Said second host cavity 21 runs through the two ends of said movable tube 20, the spigot shaft coaxle of its central shaft and said first host cavity 11.Said second host cavity 21 is used to accommodate installation accordingly by actuator, like lens barrel.In the present embodiment, said movable tube 20 is a rectangular structure, and its cross section is a square, and the volume of said movable tube 20 is less than first host cavity 11 of said stationary magazine creel 10.Said movable tube 20 has 24, one heptalateral walls 25 of 23, one the 6th sidewalls of end to end successively one the 5th sidewall, and one the 8th sidewall 26.Said the 5th sidewall 23, said heptalateral wall 25, said the 6th sidewall 24, and said the 8th sidewall 26 around second host cavity 21 that forms said movable tube 20.Said the 5th sidewall 23 is relative with the first side wall 13 of said the 6th sidewall 24 and said stationary magazine creel.Said heptalateral wall 25 is relative with the 3rd sidewall 15 of said the 8th sidewall 26 and said stationary magazine creel 10.Said the 5th sidewall 23 offers one first groove 231 towards a side of the first side wall 13 of said stationary magazine creel 10, the corner that said first groove 231 intersects near said the 5th sidewall 23 and said the 8th sidewall 26.In the present embodiment, said first groove 231 is a semi-cylindrical in configuration, and its central shaft is parallel to the central shaft of said movable tube 20.Said the 6th sidewall 24 offers one second groove 241 towards a side of second sidewall 14 of said stationary magazine creel 10; The corner that said second groove 241 intersects near said the 6th sidewall 24 and said the 8th sidewall 26, said second groove 241 is relative with second accepting groove 141 of said stationary magazine creel 10.In the present embodiment, said second groove 241 is a rectangle structure.Said heptalateral wall 25 offers one the 3rd groove 251 towards a side of the 3rd sidewall 15 of said stationary magazine creel 10, the corner that said the 3rd groove 251 intersects near said the 5th sidewall 23 and said heptalateral wall 25.In the present embodiment, said the 3rd groove 251 is a semi-cylindrical in configuration, and its central shaft is parallel to the central shaft of said movable tube 20.The edge of two end faces of said movable tube 20 is respectively equipped with second flange 27 of a sheet that extends outwardly, and said second flange 27 is corresponding with said first flange 17.In the present embodiment; The corner that said second flange 27 intersects near said the 8th sidewall 26 and said the 5th sidewall 23; Said two second flanges 27 are equal respectively with two end faces of said movable tube 20, and said two second flanges 27 are all perpendicular to the central shaft of said second host cavity 21.Each said second flange 27 is equipped with one second pin-and-hole 271.Said second pin-and-hole 271 is corresponding with first pin-and-hole 171 of said first flange 17, is used to cooperate said guide finger 18.Each said second pin-and-hole 271 all runs through corresponding said second flange 27.The central shaft of the central shaft of said second pin-and-hole 271 and said first pin-and-hole 171 coincides.Said second pin-and-hole 271 cooperates with said guide finger 18 versatilely.Thus; Through cooperating of said second pin-and-hole 271 and said guide finger 18; The said movable tube 20 that is contained in said first host cavity 11 cooperatively interacts with said stationary magazine creel 10, and said movable tube 20 can move with respect to said stationary magazine creel 10 along said guide finger 18.
It is understandable that; The structure of said movable tube 20 is not limited to present embodiment; According to actual needs; Said movable tube 20 also can be designed as cylindrical structure, and correspondingly, said the 5th sidewall 23, said the 6th sidewall 24, said heptalateral wall 25 and said the 8th sidewall 26 be the different piece in said movable 20 circle wall.
Said Piezoelectric Driving assembly 30 comprises a piezoelectric element 31 and a friction member 33.Said piezoelectric element 31 is arranged at the sidewall of said stationary magazine creel 10, and said friction member 33 is fixed in said movable tube 20 and relative with said piezoelectric element 31.In the present embodiment, said piezoelectric element 31 has the friction part 311 (as shown in Figure 3) of a semi-cylindrical in configuration, and the central shaft of the central shaft of said friction part 311 and said movable tube 20 is perpendicular.Said piezoelectric element 31 is arranged in first accepting groove 131 of said the first side wall 13, and said friction part 311 is towards the 5th sidewall 23 of said movable tube 20, and over against said the 5th sidewall 23 first groove 231.Said friction member 33 is a cylindrical structure, and it fixedly is contained in first groove 231 of the 5th said movable 20 sidewall 23.The central shaft of the central shaft of said friction member 33 and said first groove 231 coincides and is parallel to said movable 20 central shaft.The friction force that the periphery of the periphery of said friction member 33 and the friction part 311 of said piezoelectric element 31 is vertical each other contact with the minimizing contact area and produced when contacting.
Deformation take place in said piezoelectric element 31 energising backs, and said piezoelectric element 31 drives said movable tube 20 through the said friction member 33 of said friction part 311 friction-driven and moves with respect to said stationary magazine creel 10 along its central shaft.Particularly, said piezoelectric element 31 energising backs produce deformation, drive said friction part 311 and do perhaps anticlockwise elliptic motion clockwise (plane parallel at this ellipse place is in the central shaft of said friction member 33).Said friction part 311 and friction member 33 mutual friction mutually of being fixed in said movable 20; Said friction part 311 drives said friction member 33 along its axial moving linearly, and then drives said movable tube 20 and move with respect to said stationary magazine creel 10 along a said guide finger 18.
It is understandable that, when said movable tube 20 moves with respect to said stationary magazine creel 10 along a said guide finger 18, first flange 17 of said stationary magazine creel 10 can to said movable tube 20 make progress mobile the restriction, to avoid said movable tube 20 dislocations.
Preferably, said friction member 33 is processed by stainless steel.Certainly, friction member 33 can be that high-abrasive material, chromium are that high-abrasive material or compound high-abrasive material are processed by manganese also.
Said preload component 40 is arranged between said stationary magazine creel 10 and the said movable tube 20; And said preload component 40 is relative with said Piezoelectric Driving assembly 30; Said preload component 40 applies a precompression in said movable tube 20, said friction member 33 and piezoelectric element 31 in the said Piezoelectric Driving assembly 30 is remained be in contact with one another.In the present embodiment, said preload component 40 comprises one first magnetic element 41 and one second magnetic element 42.Said first magnetic element 41 is arranged in second accepting groove 141 of second sidewall 14 of said stationary magazine creel 10 and towards said movable tube 20.Said second magnetic element 42 is fixedly set in second groove 241 of the 6th said movable 20 sidewall 24, and said second magnetic element 42 is relative with said first magnetic element, 41 homopolarities.Produce said precompression (being repulsion) between said first magnetic element 41 and said second magnetic element 42.Said precompression acts on said movable tube 20; Make said movable tube 20 the first side walls 13 near said stationary magazine creel 10; Thereby the friction member 33 that is fixed on the said movable tube 20 is contacted with the friction part 311 of said piezoelectric element 31 all the time, and then can make said Piezoelectric Driving assembly 30 realize its driving purposes effectively.
Preferably, the central axis of the direction of the contact site of said piezoelectric element 31 and said friction member 33 and said precompression and said friction member 33 is on same straight line.Thus, produce in the time of can avoiding said movable tube 20 to move with respect to said stationary magazine creel 10 along said guide finger 18.
Preferably, said first magnetic element 41 is permanent magnet with said second magnetic element 42.
Said detection components 50 comprises a Hall element 51 and one the 3rd magnetic element 53.Said Hall element 51 is arranged at the sidewall of said stationary magazine creel 10, and said Hall element 51 is away from said first magnetic element 41 and said second magnetic element 42.Said the 3rd magnetic element 53 is fixed in the sidewall of said movable tube 20, and said the 3rd magnetic element 53 is away from said first magnetic element 41 and said second magnetic element 42.Said the 3rd magnetic element 53 is relative with said Hall element 51.Said the 3rd magnetic element of said Hall element 51 sensings 53 changes of magnetic field situation.When said the 3rd magnetic element 53 moved with said movable tube 20, said Hall element 51 sensed the changes of magnetic field amount of said the 3rd magnetic element 53, and induction produces corresponding electric current.Thus, can detect the displacement of said movable tube 20.In the present embodiment, said Hall element 51 is fixedly set in the 3rd accepting groove 151 of the 3rd sidewall 15 of said stationary magazine creel 10.Said the 3rd magnetic element 53 is a cylindrical structure, and its central shaft is parallel to the central shaft of said movable tube 20.Said the 3rd magnetic element 53 is fixedly set in the 3rd groove 251 of said movable 20 heptalateral wall 25, and said the 3rd magnetic element 53 faces with said Hall element 51.
Preferably, said the 3rd magnetic element 53 is a permanent magnet.
Said flexible PCB 60 is arranged at the periphery of said stationary magazine creel 10, and said flexible PCB 60 is around the first side wall 13 and second sidewall 14 of said stationary magazine creel 10.Hall element 51 electrically connects respectively in piezoelectric element 31 in said flexible PCB 60 and the said Piezoelectric Driving assembly 30 and the said detection components 50.Thus, said flexible PCB 60 can be the electric current of said piezoelectric element 31 supplies from power supply (figure does not show) conveying, and can carry said Hall element 51 to respond to the signal that produces.
It is understandable that said flexible PCB 60 can also electrically connect with other elements.
Said reinforced sheet 70 is arranged at the periphery of said stationary magazine creel 10, and said reinforced sheet 70 is around said flexible PCB 60.Said reinforced sheet 70 is fixed in the piezoelectric element in the said Piezoelectric Driving assembly 30 in first accepting groove 131 of the first side wall 13 of said stationary magazine creel 10, to avoid said piezoelectric element 31 from 131 dislocations of said first accepting groove.Simultaneously, the said piezoelectric element 31 deformation directions of said reinforced sheet 70 constraints drive said friction member 33 along its axial moving linearly power so that the deformation after 31 energisings of said piezoelectric element helps the friction generates of friction part 311 and said friction member 33.In the present embodiment, the thickness of said reinforced sheet 70 is 0.1～0.2mm.Said reinforced sheet 70 is attached on the said flexible PCB 60.
It is understandable that, be electrically insulated each other between said reinforced sheet 70 and the said flexible PCB 60.
Said driver 100 applies precompression in said movable tube 20 through said preload component 40 wherein, and the said friction member 33 that is fixed in said movable tube 20 is in contact with one another with piezoelectric element 31.When deformation takes place in said piezoelectric element 31 energising backs; Can move with respect to said stationary magazine creel 10 along guide finger 18 (being the direction of the central shaft of said movable tube 20) by the said movable tube 20 of said friction member 33 drives of friction-driven; Thus; Can reduce the loss that drives energy, help energy-conserving and environment-protective.Simultaneously; The basic module of said driver 100 is simpler; Piezoelectric element 31 wherein is arranged at the sidewall of said stationary magazine creel 10; And utilize reinforced sheet 70 to fix, friction member 33 is arranged at the sidewall of said movable tube, and said preload component 40 is arranged at said stationary magazine creel 10 and said movable 20 sidewall.Thus, effectively utilize said stationary magazine creel 10 and said movable 20 horizontal space, made that the structure of said driver 100 is compact, be suitable for small-sized or microminiaturized development trend.
See also and consult Fig. 4 and Fig. 5 in the lump, second embodiment of the invention provides a kind of camera module 200, and it comprises 280, one supporting seats 290 of a lens barrel, and one first driver 100 that embodiment provides.
Said lens barrel 280 is used to accommodate optical elements such as eyeglass, spaced ring, optical filter (figure does not show).In the present embodiment, offer external thread 281 on the outer circle wall of said lens barrel 280, it is used for cooperating the said driver 100 of installation.
Said supporting seat 290 is used to support said driver 100.In the present embodiment, said supporting seat 290 has a receiving space 292, and it is used to accommodate image sensor (figure do not show) is set.
In the said driver 100, the internal perisporium of second host cavity 21 of said movable tube 20 offers internal thread 211.Said internal thread 211 matches with the external thread 281 of said lens barrel 280.Thus, can be convenient to said lens barrel 280 is installed on the said driver 100.Said driver 100 is arranged on the said supporting seat 290.The image sensor that is arranged on the said supporting seat 290 is positioned on the optical axis of said lens barrel 280.Extraneous light incides then and forms signal of video signal on the CIS through the optical element in the said lens barrel 280.Said driver 100 is used for according to the shooting demand, correspondingly drives said lens barrel 280 and moves to realize focusing.
Understandable, in the present invention, the type of said lens barrel 280 and CIS and packaged type can be occur in the middle of the prior art any.
See also Fig. 6, third embodiment of the invention provides a kind of portable electron device 300, and it comprises a body 380, and one the second camera module 200 that embodiment provides.
Said camera module 200 is arranged on the said body 380.In the present embodiment, said portable electron device 300 is mobile phones.Certainly, said portable electron device 300 also can be other electronic installations such as video recorder, digital camera, notebook computer.
It is understandable that, for the person of ordinary skill of the art, can make other various corresponding changes and distortion by technical conceive according to the present invention, and all these change the protection domain that all should belong to claim of the present invention with distortion.
Claims (12)
1. driver, it comprises:
The stationary magazine creel of a both ends open, said stationary magazine creel have first host cavity that runs through its two ends;
The movable tube of a both ends open, said movable tube is contained in said first host cavity central shaft of said movable tube and the spigot shaft coaxle of said first host cavity versatilely;
A Piezoelectric Driving assembly, said Piezoelectric Driving assembly comprise a piezoelectric element and a friction member, and said piezoelectric element is arranged at the sidewall of said stationary magazine creel, and said friction member is fixed in said movable tube and relative with said piezoelectric element;
A flexible PCB, said flexible PCB are arranged at the outside of said stationary magazine creel and electrically connect with said piezoelectric element;
A reinforced sheet, said reinforced sheet are fixed in the sidewall of said stationary magazine creel around said flexible PCB and with said piezoelectric element; And
A preload component, said preload component are arranged between said stationary magazine creel and the said movable tube and are relative with said Piezoelectric Driving assembly, and said preload component applies a precompression in said movable tube, and said friction member and said piezoelectric element are in contact with one another;
Deformation takes place in said piezoelectric element energising back, and the said friction member of said piezoelectric element friction-driven drives said movable tube and moves with respect to said stationary magazine creel along its central shaft.
2. driver as claimed in claim 1; It is characterized in that; The edge of said stationary magazine creel one end is provided with first flange of the sheet of said first host cavity extension of court; Said first flange is perpendicular to the central shaft of said stationary magazine creel, and the edge of two end faces of said movable tube is respectively equipped with second flange of a sheet that extends outwardly, and said second flange is perpendicular to the central shaft of said movable tube; Said second flange is corresponding with said first flange; Said first flange is provided with a guide finger, each said second flange be equipped with one with the movable mutually pin-and-hole that cooperates of said guide finger, the central shaft of said guide finger and the central shaft of said pin-and-hole coincides and all be parallel to the central shaft of said first host cavity.
3. driver as claimed in claim 1; It is characterized in that; Said piezoelectric element has the friction part of a semicylinder structure, and the central shaft of the central shaft of said friction part and said movable tube is perpendicular, and the periphery of said friction part and said friction member are in contact with one another.
4. driver as claimed in claim 1 is characterized in that, said friction member is a cylindrical structure, and the central axes of said friction member is in the central shaft of said movable tube.
5. driver as claimed in claim 1; It is characterized in that; Said preload component comprises one first magnetic element and one second magnetic element; Said first magnetic element is arranged on the sidewall of said stationary magazine creel and towards said movable tube, and said second magnetic element is arranged on the sidewall of said movable tube and with the said first magnetic element homopolarity and produces said precompression relatively.
6. driver as claimed in claim 5; It is characterized in that; Said stationary magazine creel has the relative the first side wall and second sidewall, and said the first side wall is provided with one first accepting groove, and said second sidewall is provided with one second accepting groove; Said first accepting groove and said first host cavity connect; Said piezoelectric element is arranged in said first accepting groove, and said second accepting groove and said first accepting groove connect relatively and with said first host cavity, and said first magnetic element is arranged in said second accepting groove.
7. driver as claimed in claim 6; It is characterized in that; Said driver further comprises a detection components that is used to detect said movable displacement; Said detection components comprises a Hall element and one the 3rd magnetic element, and said Hall element is arranged at the sidewall of said stationary magazine creel, and said the 3rd magnetic element is a cylindrical structure; The central axes of said the 3rd magnetic element is in the central shaft of said movable tube, and said the 3rd magnetic element is fixed in said movable sidewall and relative with said Hall element.
8. driver as claimed in claim 7; It is characterized in that; Said stationary magazine creel further has one the 3rd sidewall, and said the 3rd sidewall connects said the first side wall and said second sidewall, and said the 3rd sidewall is provided with one the 3rd accepting groove; Said the 3rd accepting groove is partial to said the first side wall and is connected with said first host cavity, and said Hall element is arranged in said the 3rd accepting groove.
9. driver as claimed in claim 8 is characterized in that, said flexible PCB is around said the first side wall and said second sidewall, and said flexible PCB and said piezoelectric element and said Hall element electrically connect respectively.
10. driver as claimed in claim 6 is characterized in that, said reinforced sheet is fixed in said piezoelectric element in first accepting groove of said the first side wall.
11. camera module; It comprises a lens barrel and a supporting seat; Said supporting seat is provided with an image sensor; It is characterized in that: said camera module further comprises one like each described driver of claim 1～10, and said driver is arranged on the said supporting seat and is positioned at the top of said image sensor, and said lens barrel is contained in the movable tube of said driver; Said image sensor is positioned on the optical axis of said lens barrel, and said driver is used to drive said lens barrel and moves to realize focusing.
12. a portable electron device, it comprises a body and a camera module as claimed in claim 11, and said camera module is arranged on the said body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105768584A CN102565993A (en) | 2010-12-07 | 2010-12-07 | Driver, camera module, and portable electronic device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105768584A CN102565993A (en) | 2010-12-07 | 2010-12-07 | Driver, camera module, and portable electronic device |
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| Publication Number | Publication Date |
|---|---|
| CN102565993A true CN102565993A (en) | 2012-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010105768584A Pending CN102565993A (en) | 2010-12-07 | 2010-12-07 | Driver, camera module, and portable electronic device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103973157A (en) * | 2013-02-01 | 2014-08-06 | 思考电机（上海）有限公司 | Linear driving device, photographing device and electronic equipment |
| CN104284060A (en) * | 2013-07-12 | 2015-01-14 | 鸿富锦精密工业（深圳）有限公司 | Camera module |
| WO2017135649A1 (en) * | 2016-02-04 | 2017-08-10 | 엘지이노텍(주) | Lens driving device, and camera module and optical device including same |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103973157A (en) * | 2013-02-01 | 2014-08-06 | 思考电机（上海）有限公司 | Linear driving device, photographing device and electronic equipment |
| CN103973157B (en) * | 2013-02-01 | 2016-03-09 | 新思考电机有限公司 | Linear drive apparatus, photographic means and electronic equipment |
| CN104284060A (en) * | 2013-07-12 | 2015-01-14 | 鸿富锦精密工业（深圳）有限公司 | Camera module |
| WO2017135649A1 (en) * | 2016-02-04 | 2017-08-10 | 엘지이노텍(주) | Lens driving device, and camera module and optical device including same |
| CN108781033A (en) * | 2016-02-04 | 2018-11-09 | Lg伊诺特有限公司 | Lens driver, camera model and the Optical devices including the camera model |
| US10928607B2 (en) | 2016-02-04 | 2021-02-23 | Lg Innotek Co., Ltd. | Lens driving device, and camera module and optical device including same |
| CN108781033B (en) * | 2016-02-04 | 2021-03-12 | Lg伊诺特有限公司 | Lens driving device, camera module and optical device including the same |
| US11656427B2 (en) | 2016-02-04 | 2023-05-23 | Lg Innotek Co., Ltd. | Lens driving device, and camera module and optical device including same |
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Application publication date: 20120711 |