CN103051145A - Voice coil motor and leaf spring thereof - Google Patents
Voice coil motor and leaf spring thereof Download PDFInfo
- Publication number
- CN103051145A CN103051145A CN2012105708135A CN201210570813A CN103051145A CN 103051145 A CN103051145 A CN 103051145A CN 2012105708135 A CN2012105708135 A CN 2012105708135A CN 201210570813 A CN201210570813 A CN 201210570813A CN 103051145 A CN103051145 A CN 103051145A
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- arc section
- voice coil
- coil motor
- inner ring
- movable inner
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Abstract
The invention relates to a voice coil motor and a leaf spring thereof. The leaf spring for the voice coil motor comprises a fixed outer ring, a movable inner ring and at least four connecting spring wires, wherein the connecting spring wires are uniformly distributed between the fixed outer ring and the movable inner ring; and one section, which is opposite to the fixed outer ring, of one end of each connecting spring wire is connected with the movable inner ring. Due to the adoption of the leaf spring, stress concentration can be reduced, and the performance of the voice coil motor is improved.
Description
Technical field
The present invention relates to a kind of springs and have the voice coil motor of this springs.
Background technology
Voice coil motor because have that volume is little, highly sensitive, fast response time, good reproducibility, low in energy consumption, the series of advantages such as cost is low, and extensively be used in the electronic products such as mobile phone, notebook computer and panel computer as the automatic brake of focusing.Common voice coil motor mainly is made of springs, yoke, magnet, coil, bobbin, shell and pedestal.Wherein, the laminated structure of spring so that voice coil motor can be encapsulated in other size of grade.The outer ring of springs is connecting other fixed parts in the voice coil motor, the inner ring of springs is connecting other movable members in the voice coil motor, springs generation strain during the voice coil motor action, this moment, springs played a part to support and recover to movable member.This shows that springs is the key component in the voice coil motor, the performance quality of voice coil motor and the length in life-span mainly are performance and the life-spans of depending on springs.
When automatic focusing, the springs of voice coil motor can constantly be adjusted deflection to reach the purpose of focusing.Yet in use, stress occurs usually easily in the coupling part of the coupling part of the inner ring of existing springs and spring silk and spring outer ring and spring silk concentrates and fatigue failure, and affects the voice coil motor performance.
Summary of the invention
In view of above-mentioned condition, be necessary to provide a kind of can voice coil motor and springs thereof, this springs can reduce stress to be concentrated, thereby improves the performance of voice coil motor.
A kind of voice coil motor springs, comprise fixedly outer ring, movable inner ring and at least four connection spring silks, these at least four connect the spring silk and are evenly distributed on this fixedly between outer ring and this movable inner ring, and each end that connects the spring silk with this fixedly continuous another relative section in outer ring link to each other with this movable inner ring.
Each connects the spring silk and has two or more interconnective arcs.
Curvature in each connection spring silk between each arc equates or is more or less the same in 50 percent.
Each connects the spring silk and has straightway, and this straightway is near being somebody's turn to do fixedly outer ring.
Each part that connects close this movable inner ring of spring silk is arc section.
From close fixedly outer ring to close this movable inner ring, each connects spring silk and comprises successively interconnective straightway, the first arc section, the second arc section, three-arc section, the 4th arc section, the 5th arc section, the 6th arc section and the 7th arc section, and this first arc section, the second arc section, three-arc section, the 4th arc section, the 5th arc section, the 6th arc section equate with curvature between the 7th arc section or be more or less the same in 50 percent.
This movable inner ring is provided with open slot in the junction that is connected the spring silk with this.
Should be fixedly the outside wall surface of outer ring surround octagon, the internal face of this movable inner ring surrounds and is circle, these at least four connection spring silks are evenly distributed on this fixedly between outer ring and this movable inner ring centered by this circular center of circle.
A kind of voice coil motor, it has springs, this springs comprises fixedly outer ring, movable inner ring and at least four connection spring silks, these at least four connect the spring silk and are evenly distributed on this fixedly between outer ring and this movable inner ring, and each end that connects the spring silk with this fixedly continuous another relative section in outer ring link to each other with this movable inner ring.
Each connects the spring silk and has two or more interconnective arc sections.
At least four of above-mentioned springs connect the spring silks and are evenly distributed on fixedly between the outer ring and movable inner ring, can be so that the stress distribution in the springs be more even, thus the stress that can effectively reduce springs is concentrated, the useful life of increase springs; And then can improve the performance of the voice coil motor that uses springs and increase useful life of this voice coil motor.
Description of drawings
Fig. 1 is the schematic diagram of the springs of the embodiment of the invention.
Embodiment
Below in conjunction with drawings and Examples voice coil motor of the present invention and springs thereof are described in further detail.
See also Fig. 1, the springs 100 of the embodiment of the invention comprises fixedly outer ring 12, movable inner ring 14 and at least four connection spring silks 16.At least four connect spring silk 16 and are evenly distributed on fixedly between the outer ring 12 and movable inner ring 14, and each connects an end of spring silk 16 and links to each other with movable inner ring 14 with fixing outer ring 12 continuous another relative sections.
Each connects spring silk 16 can have two or more interconnective arcs, curvature between each arc can equate or be more or less the same in 50 percent, and each connects spring silk 16 also can have straightway, this straightway can be near fixing outer ring 12, in addition, each connection spring silk 16 part near movable inner rings 14 can be arc section.Specifically in the present embodiment, from close fixedly outer ring 12 to close this movable inner ring 14, each connects spring silk 16 and comprises successively interconnective straightway 161, the first arc section 162, the second arc section 163, three-arc section 164, the 4th arc section 165, the 5th arc section 166, the 6th arc section 167 and the 7th arc section 168, and the curvature between the first arc section 162, the second arc section 163, three-arc section 164, the 4th arc section 165, the 5th arc section 166, the 6th arc section 167 and the 7th arc section 168 is more or less the same in 50 percent.Specifically, the first arc section 162, the second arc section 163, three-arc section 164, the 4th arc section 165, the 5th arc section 166, the 6th arc section 167 and the 7th arc section 168, and the radius of curvature of the first arc section 162, the second arc section 163, three-arc section 164, the 4th arc section 165, the 5th arc section 166, the 6th arc section 167 and the 7th arc section 168 can be between 0.35 to 0.5 millimeter.
Fixedly outer ring 12 is used for fixing with other fixed parts (such as the fixed part such as yoke or pedestal in the voice coil motor) of voice coil motor, and fixedly the shape of outer ring 12 can be octagon substantially.Specifically in the present embodiment, fixedly the outside wall surface 120 of outer ring 12 surrounds octagon, and fixedly outer ring 12 comprises first side, Second Edge, the 3rd limit, the 4th limit, the 5th limit, hexagon, the 7th limit and the 8th limit that links to each other successively, the equal in length on first side, the 3rd limit, the 5th limit and the 7th limit wherein, the equal in length on Second Edge, the 4th limit, hexagon and the 8th limit, and the length on first side, the 3rd limit, the 5th limit and the 7th limit is respectively greater than the length on Second Edge, the 4th limit, hexagon and the 8th limit.Outer ring 12 Second Edges, the 4th limit, hexagon link to each other with the 8th limit one end of the straightway 161 of four connection spring silks 16 respectively with fixedly.
Movable inner ring 14 is used for fixing with other movable members (movable members such as voice coil motor coil and bobbin) of voice coil motor, and the shape of movable inner ring 14 can be circle substantially.Movable inner ring 14 can be provided with open slot 142 with the junction that is connected spring silk 16.Specifically in the present embodiment, movable inner ring 14 internal faces 140 surround and are circle, and four ends that connect the 7th arc section 168 of spring silks 16 link to each other with the sidewall of open slot 142 respectively, thereby so that four connect spring silk 16 and surround take internal face 140 and be evenly distributed on fixedly outer ring 12 centered by the center of circle of circle and movably between the inner ring 14.
In addition, the present invention also provides a kind of voice coil motor with above-mentioned springs 100.Wherein, the fixedly outer ring 12 of springs 100 can with voice coil motor in other fixed parts fix, such as with voice coil motor in the fixed part such as yoke or pedestal fix; And movable inner ring 14 can with voice coil motor in other movable members fix, such as fixing with movable members such as voice coil motor coil and bobbins.
At least four of above-mentioned springs 100 connect that spring silks 16 are evenly distributed on fixedly outer ring 12 and movably between the inner ring 14, can be so that the stress distribution in the springs 100 be more even, thereby the stress that can effectively reduce springs 100 is concentrated, and increases the useful life of springs 100; And then also can improve the performance of the voice coil motor that uses springs 100 and increase useful life of this voice coil motor.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, although the present invention discloses as above with preferred embodiment, yet be not to limit the present invention, any those skilled in the art, within not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be not break away from the technical solution of the present invention content, any simple modification that foundation technical spirit of the present invention is done above embodiment, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (10)
1. voice coil motor springs, it is characterized in that, comprise fixedly outer ring, movable inner ring and at least four connection spring silks, these at least four connect the spring silk and are evenly distributed on this fixedly between outer ring and this movable inner ring, and each end that connects the spring silk with this fixedly continuous another relative section in outer ring link to each other with this movable inner ring.
2. voice coil motor springs as claimed in claim 1 is characterized in that: each connects spring silk and has two or more interconnective arcs.
3. voice coil motor springs as claimed in claim 2 is characterized in that: each connects in spring silk the curvature between each arc and equates or be more or less the same in 50 percent.
4. voice coil motor springs as claimed in claim 2 is characterized in that: each connects spring silk and has straightway, and this straightway is near fixing outer ring.
5. voice coil motor springs as claimed in claim 2 is characterized in that: each connects spring silk is arc section near part of this movable inner ring.
6. voice coil motor springs as claimed in claim 1, it is characterized in that: from close fixedly outer ring to close this movable inner ring, each connects spring silk and comprises successively interconnective straightway, the first arc section, the second arc section, three-arc section, the 4th arc section, the 5th arc section, the 6th arc section and the 7th arc section, and this first arc section, the second arc section, three-arc section, the 4th arc section, the 5th arc section, the 6th arc section equate with curvature between the 7th arc section or be more or less the same in 50 percent.
7. voice coil motor springs as claimed in claim 1, it is characterized in that: this movable inner ring is provided with open slot in the junction that is connected the spring silk with this.
8. voice coil motor springs as claimed in claim 1, it is characterized in that: this fixedly the outside wall surface of outer ring surround octagon, the internal face of this movable inner ring surrounds and is circle, and these at least four connect the spring silk and are evenly distributed on this fixedly between outer ring and this movable inner ring centered by this circular center of circle.
9. voice coil motor, it has springs, it is characterized in that, this springs comprises fixedly outer ring, movable inner ring and at least four connection spring silks, these at least four connect the spring silk and are evenly distributed on this fixedly between outer ring and this movable inner ring, and each end that connects the spring silk with this fixedly continuous another relative section in outer ring link to each other with this movable inner ring.
10. voice coil motor as claimed in claim 9 is characterized in that: each connects spring silk and has two or more interconnective arc sections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105708135A CN103051145A (en) | 2012-12-25 | 2012-12-25 | Voice coil motor and leaf spring thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105708135A CN103051145A (en) | 2012-12-25 | 2012-12-25 | Voice coil motor and leaf spring thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103051145A true CN103051145A (en) | 2013-04-17 |
Family
ID=48063681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105708135A Pending CN103051145A (en) | 2012-12-25 | 2012-12-25 | Voice coil motor and leaf spring thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103051145A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4246216A3 (en) * | 2015-03-18 | 2024-01-03 | LG Innotek Co., Ltd. | Lens moving apparatus, camera module and optical appliance including the same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101068091A (en) * | 2007-06-13 | 2007-11-07 | 宜兴市贵鑫磁电高科技有限公司 | Ultrasmall type voice coil motor |
| CN201156697Y (en) * | 2008-02-03 | 2008-11-26 | 惠州市百宏微动技术工业有限公司 | Spring tab pair for ultra-small type voice coil motor |
| CN201527507U (en) * | 2009-09-28 | 2010-07-14 | 深圳市美欧电子有限责任公司 | Lens driving device |
| CN102121505A (en) * | 2010-01-08 | 2011-07-13 | Lg伊诺特有限公司 | Flat spring and voice coil motor using the same |
| CN203071786U (en) * | 2012-12-25 | 2013-07-17 | 深圳市威盟光电科技有限公司 | Voice coil motor and sheet-shaped spring |
-
2012
- 2012-12-25 CN CN2012105708135A patent/CN103051145A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101068091A (en) * | 2007-06-13 | 2007-11-07 | 宜兴市贵鑫磁电高科技有限公司 | Ultrasmall type voice coil motor |
| CN201156697Y (en) * | 2008-02-03 | 2008-11-26 | 惠州市百宏微动技术工业有限公司 | Spring tab pair for ultra-small type voice coil motor |
| CN201527507U (en) * | 2009-09-28 | 2010-07-14 | 深圳市美欧电子有限责任公司 | Lens driving device |
| CN102121505A (en) * | 2010-01-08 | 2011-07-13 | Lg伊诺特有限公司 | Flat spring and voice coil motor using the same |
| CN203071786U (en) * | 2012-12-25 | 2013-07-17 | 深圳市威盟光电科技有限公司 | Voice coil motor and sheet-shaped spring |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4246216A3 (en) * | 2015-03-18 | 2024-01-03 | LG Innotek Co., Ltd. | Lens moving apparatus, camera module and optical appliance including the same |
| US11994693B2 (en) | 2015-03-18 | 2024-05-28 | Lg Innotek Co., Ltd. | Lens moving apparatus, camera module and optical appliance including the same |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130417 |