CN110323921A - A kind of camera module auto-focusing voice coil motor - Google Patents
A kind of camera module auto-focusing voice coil motor Download PDFInfo
- Publication number
- CN110323921A CN110323921A CN201910635831.9A CN201910635831A CN110323921A CN 110323921 A CN110323921 A CN 110323921A CN 201910635831 A CN201910635831 A CN 201910635831A CN 110323921 A CN110323921 A CN 110323921A
- Authority
- CN
- China
- Prior art keywords
- rail axis
- pedestal
- voice coil
- coil motor
- lead rail
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 27
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000006073 displacement reaction Methods 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract description 5
- 230000004308 accommodation Effects 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000007769 metal material Substances 0.000 abstract description 5
- 239000004568 cement Substances 0.000 abstract description 3
- 239000000919 ceramic Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/32—Means for focusing
- G03B13/34—Power focusing
- G03B13/36—Autofocus systems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
- H02K41/035—DC motors; Unipolar motors
- H02K41/0352—Unipolar motors
- H02K41/0354—Lorentz force motors, e.g. voice coil motors
- H02K41/0356—Lorentz force motors, e.g. voice coil motors moving along a straight path
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Optics & Photonics (AREA)
- Linear Motors (AREA)
Abstract
The invention discloses a kind of camera module auto-focusing voice coil motors, including pedestal, hollow cavity is provided on the pedestal, magnetite carrier is installed in the hollow cavity, the smooth metal guide rail axis in surface is provided between magnetite carrier and pedestal, to reduce the frictional resistance generated when being subjected to displacement.Present invention improves the movement operating conditions between existing pedestal and coil supporter, by the guiding axis that metal material is arranged on pedestal, contact the guiding axis of surface smoother with the coil supporter of plastic cement material, the frictional resistance for reducing relative motion between guiding axis and plastic cement material improves the stability of voice coil motor.
Description
Technical field
The present invention relates to camera module group lens linear actuating device field more particularly to a kind of camera module auto-focusing sounds
Coil motor.
Background technique
From function machine to intelligent machine across era development, therefore in entrained camera module also developed to automatically from fixed-focus
Focus function.From becoming increasingly popular for the high-pixel cameras mould groups such as 5 Mega Pixel, 8 Mega Pixel, 13 Mega Pixel,
Camera function and camera function it is stronger and stronger, to as camera module realize automatic focusing function camera lens Linear Driving
The requirement of device is also higher and higher.
It is directed to the linear motor that there is contact between magnetite carrier and pedestal, substantially ceramic balls and plastic parts connect
Touching either plastic parts and plastic parts contact, when relative motion, can generate sliding friction.Ceramic balls are and hard because be sphere
The contact of relatively high and plastic parts is point contact on degree, is easy to generate scratch and pit on plastic parts；Plastic parts and plastic parts connect
It rubs after touching relative motion, plastic rubber member surface finish is poor and wearability is poor, causes frictional resistance larger and contacts
Face is easy to wear.The stability aspect that above defect will cause linear motor goes wrong.
Summary of the invention
In view of the problems of the existing technology, the purpose of the present invention is to provide a kind of camera module auto-focusing voice coil horses
It reaches, which can effectively reduce frictional resistance, reduce the abrasion to plastic parts, prolong the service life.
To achieve the above object, technical solution of the present invention is as follows:
A kind of camera module auto-focusing voice coil motor, including pedestal, are provided with hollow cavity on the pedestal, in the hollow cavity
Magnetite carrier is installed, the smooth metal guide rail axis in surface is provided between magnetite carrier and pedestal, is being occurred to reduce
The frictional resistance generated when displacement.
Further, the accommodation groove of the lead rail axis is provided on the pedestal, the lead rail axis is fixedly mounted on the appearance
It sets in slot.
Further, the lead rail axis is cylindric or elliptic cylindrical shape, the radial side of the lead rail axis and the magnetite
The tangent contact in the side of carrier.
Further, the lead rail axis is prism-shaped, and the faceted pebble of the lead rail axis is affixed with the magnetite carrier, constitutes guide rail
The contact plane of axis and coil supporter.
Further, the lead rail axis is hollow structure.
Further, the lead rail axis is stainless steel material.
Present invention improves the movement operating conditions between existing pedestal and magnetite carrier, by the way that metal material is arranged on pedestal
Guiding axis, contact the guiding axis of surface smoother with the magnetite carrier of plastic cement material, reduce guiding axis and modeling
The frictional resistance of relative motion between glue material matter, improves the stability of voice coil motor.
In the preferred technical solution of the present invention, on the one hand guiding axis with magnetite carrier linear contact reduces component
Between friction, slide moving parts between stator component more smooth；On the other hand it reduces between plastic parts
Abrasion, extends the service life of voice coil motor.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of voice coil motor in the present invention；
Fig. 2 is pedestal and the schematic cross-section after coil supporter assembling in the present invention.
Specific embodiment
To clearly demonstrate design philosophy of the invention, below with reference to example, the present invention will be described.
In the description of present embodiment, the orientation of the instructions such as term " on ", "lower", "front", "rear", "left", "right" or
Positional relationship is to be based on the orientation or positional relationship shown in the drawings, it is only for convenient for the description present invention and simplify description,
Rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, because
This is not considered as limiting the invention.In addition, term " first ", " second " are used for description purposes only, and should not be understood as
Specific indication or suggestion relative importance.
To clearly demonstrate design philosophy of the invention, below with reference to example, the present invention will be described.
A kind of camera module auto-focusing voice coil motor, including pedestal are provided with hollow cavity on the pedestal, described hollow
It is intracavitary that magnetite carrier is installed, the smooth metal guide rail axis in surface is provided between magnetite carrier and pedestal, to reduce
The frictional resistance generated when being subjected to displacement.
By using the lead rail axis of metal material, substitute existing ceramic balls and plastic parts, with reduce moving parts with
Frictional resistance between stator component improves the stability of voice coil motor.
The lead rail axis outer surface of metal material is more smooth, and smoothness of the magnetite carrier when moving on pedestal can be improved, lead to
It crosses the contact form changed between component and improves the stability of voice coil motor to reduce friction of motion resistance.
In order to which what is be more clear is illustrated the technical solution in the present invention, carried out in the form of specific embodiment below
Explanation.
Embodiment 1
Referring to Fig. 1-Fig. 2, a kind of camera module auto-focusing voice coil motor of the present embodiment, including pedestal 1, coil 2-1, carrier
2-2, magnetite 3 and shell 4, specifically when installation, magnetite 3 is mounted on the magnetite carrier 2 that voice coil motor is constituted on carrier 2-2, line
Circle 2-1 is mounted on the inner sidewall of shell 4, under the action of magnetite carrier 2 is after coil energization, can back and forth be transported perpendicular to pedestal 1
It is dynamic.
Hollow cavity 1-2 is provided on pedestal 1, magnetite carrier 2 is mounted in hollow cavity 1-2, in magnetite carrier 2 and pedestal
The lead rail axis 5 of stainless steel material is provided between 1, to reduce the frictional resistance generated when being subjected to displacement.
On pedestal 1, it is provided with the accommodation groove 1-1 of lead rail axis 5, lead rail axis 5 is adhesively fixed on pedestal 1 by glue,
The radial side of lead rail axis 5 is in contact with the side of coil supporter 2.By the lead rail axis 5 of hollow structure, reduce production material
Material saves production cost.In the present embodiment, lead rail axis 5 is cylindric, the radial side of lead rail axis 5 and the side of magnetite carrier 2
Tangent contact reduces frictional resistance to the full extent, is effectively improved in the form of line contacts, reducing contact area
The problem of frictional resistance is larger, and compared under small area of contact, plastic parts easy damaged.
Embodiment 2
Voice coil motor in the present embodiment is essentially identical with the structure in embodiment 1, the difference is that, lead rail axis is prism
Shape, any one plane of prism-shaped and the side of coil supporter are affixed, and constitute the contact plane of lead rail axis and coil supporter, are led to
It crosses the smooth metal flat in surface to be in contact with coil supporter, under the premise of effectively improving activity smoothness, makes activity trajectory
It is more accurate, shift phenomenon is avoided the occurrence of, reliably ensure that the precision of linear actuating device.
Need to illustrate has, cylindric in addition to using in above-described embodiment, and the lead rail axis of elliptic cylindrical shape also can be used, make
The side wall of lead rail axis with coil supporter is tangent contacts, meet the production needs of products of different specifications；In addition, in addition to using stainless
The lead rail axis of steel material, other metal materials after surface polishing treatment also can be used, including carbon steel and other steel alloys, make to lead
Rail axis meets the smooth use demand etc. in surface.
Finally, it will be appreciated that the principle that embodiment of above is intended to be merely illustrative of the present and the example that uses
Property embodiment, however the present invention is not limited thereto.For those of ordinary skills, do not depart from it is of the invention
In the case where principle and essence, various changes and modifications can be made therein, these variations and modifications are also considered as protection model of the invention
It encloses.
Claims (6)
1. a kind of camera module auto-focusing voice coil motor, which is characterized in that including pedestal, be provided on the pedestal hollow
Chamber is equipped with magnetite carrier in the hollow cavity, the smooth metal guide rail axis in surface is provided between magnetite carrier and pedestal,
To reduce the frictional resistance generated when being subjected to displacement.
2. auto-focusing voice coil motor as described in claim 1, which is characterized in that be provided with the lead rail axis on the pedestal
Accommodation groove, the lead rail axis is fixedly mounted in the accommodation groove.
3. auto-focusing voice coil motor as claimed in claim 2, which is characterized in that the lead rail axis is cylindric or oval
Column, the radial side of the lead rail axis with the side of the magnetite carrier is tangent contacts.
4. auto-focusing voice coil motor as claimed in claim 2, which is characterized in that the lead rail axis is prism-shaped, described to lead
The faceted pebble of rail axis is affixed with the magnetite carrier, constitutes the contact plane of lead rail axis and coil supporter.
5. the auto-focusing voice coil motor as described in claim 1-4 any claim, which is characterized in that the lead rail axis is
Hollow structure.
6. auto-focusing voice coil motor as claimed in claim 5, which is characterized in that the lead rail axis is stainless steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910635831.9A CN110323921A (en) | 2019-07-15 | 2019-07-15 | A kind of camera module auto-focusing voice coil motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910635831.9A CN110323921A (en) | 2019-07-15 | 2019-07-15 | A kind of camera module auto-focusing voice coil motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110323921A true CN110323921A (en) | 2019-10-11 |
Family
ID=68123478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910635831.9A Pending CN110323921A (en) | 2019-07-15 | 2019-07-15 | A kind of camera module auto-focusing voice coil motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110323921A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112803701A (en) * | 2021-03-12 | 2021-05-14 | 湖南新视电子技术有限公司 | Roller type motor |
| WO2021120109A1 (en) * | 2019-12-19 | 2021-06-24 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Lens driving device, camera device, and electronic apparatus |
| CN113224929A (en) * | 2020-02-06 | 2021-08-06 | 吉佳科技股份有限公司 | Voice coil motor device with automatic focusing or zooming function |
| WO2023201788A1 (en) * | 2022-04-21 | 2023-10-26 | 江苏沃特特种材料制造有限公司 | Track material for inner wall of voice coil motor, preparation method therefor, and use thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060214520A1 (en) * | 2005-03-24 | 2006-09-28 | Yu-Kuang Tseng | Voice coil motor apparatus |
| JP2008026784A (en) * | 2006-07-25 | 2008-02-07 | Seiko Instruments Inc | Lens drive module, camera module, and electronic equipment |
| US7480109B1 (en) * | 2007-12-31 | 2009-01-20 | Industrial Technology Research Institute | Piezoelectrically driven optical lens module |
| CN209982313U (en) * | 2019-07-15 | 2020-01-21 | 宜兴市贵鑫磁电高科技有限公司 | Automatic focusing voice coil motor of camera module |
-
2019
- 2019-07-15 CN CN201910635831.9A patent/CN110323921A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060214520A1 (en) * | 2005-03-24 | 2006-09-28 | Yu-Kuang Tseng | Voice coil motor apparatus |
| JP2008026784A (en) * | 2006-07-25 | 2008-02-07 | Seiko Instruments Inc | Lens drive module, camera module, and electronic equipment |
| US7480109B1 (en) * | 2007-12-31 | 2009-01-20 | Industrial Technology Research Institute | Piezoelectrically driven optical lens module |
| CN209982313U (en) * | 2019-07-15 | 2020-01-21 | 宜兴市贵鑫磁电高科技有限公司 | Automatic focusing voice coil motor of camera module |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021120109A1 (en) * | 2019-12-19 | 2021-06-24 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Lens driving device, camera device, and electronic apparatus |
| CN113224929A (en) * | 2020-02-06 | 2021-08-06 | 吉佳科技股份有限公司 | Voice coil motor device with automatic focusing or zooming function |
| CN112803701A (en) * | 2021-03-12 | 2021-05-14 | 湖南新视电子技术有限公司 | Roller type motor |
| WO2023201788A1 (en) * | 2022-04-21 | 2023-10-26 | 江苏沃特特种材料制造有限公司 | Track material for inner wall of voice coil motor, preparation method therefor, and use thereof |
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