CN105490502A - Voice coil motor and photographic device - Google Patents
Voice coil motor and photographic device Download PDFInfo
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- CN105490502A CN105490502A CN201610094913.3A CN201610094913A CN105490502A CN 105490502 A CN105490502 A CN 105490502A CN 201610094913 A CN201610094913 A CN 201610094913A CN 105490502 A CN105490502 A CN 105490502A
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- cover plate
- voice coil
- coil motor
- fixed structure
- preset value
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- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
The embodiment of the invention discloses a voice coil motor and a photographic device. The voice coil motor comprises a vibrating coil, a fixing structure, a cover plate, a supporting frame and a power structure. The fixing structure comprises a first end and a second end which are oppositely arranged; the outer side face of the side, close to the first end, of the cover plate and the inner side face of the first end are partly overlapped in the direction perpendicular to the side face of the first end; the side, close to the second end, of the supporting frame is buckled to the outer side face of the second end; as supporting can be carried out through the supporting frame in the direction from the second end to the first end, and the fixing structure can be fixed from the two opposite sides of the fixing structure through the supporting frame and the cover plate, it can be avoided that the fixing structure rotates in the clockwise direction or the anticlockwise direction, the dip angle of the motor is reduced, and the resolution of the motor is improved; in the vibrating process of the vibrating coil, it can be further guaranteed that dust can not enter the portion between the inner side face of the first end and the outer side face of the end of the cover plate and the portion between the second end and the supporting frame, and the sealing performance of the voice coil motor is improved.
Description
Technical field
The present invention relates to motor technologies field, particularly relate to a kind of voice coil motor and a kind of camera head comprising this voice coil motor.
Background technology
Voice coil motor has that volume is little, power consumption is few and the advantage such as cheap, is suitable as the driver of electronic product as digital camera, mobile phone, Digital Video etc.
As shown in Figure 1, voice coil motor of the prior art comprises: housing 01; Be positioned at the vibrator coil 02 of described housing 01; Be positioned at the fixed structure 03 be fixedly connected with described vibrator coil 02 bottom described vibrator coil 02; Be positioned at cover plate 04 and the bracing frame 05 of described housing 01; Be positioned at the space that described fixed structure 03, described cover plate 04 and support frame as described above 05 are formed, and be positioned at described vibrator coil 02 and deviate from described fixed structure 03 side electromagnetic structure 06; Wherein, described vibrator coil 02 and described fixed structure 03 move reciprocatingly under the effect of described electromagnetic structure 06.
But, due in the voice coil motor of prior art, described fixed structure 03 side and described vibrator coil 02 sidewall have space, in the partial sidewall of described housing 01 space between described fixed structure 03 and described vibrator coil 02, and the sidewall of described housing 01 and described fixed structure 03, all gap is had between described vibrator coil 02, idle to ensure the reciprocating motion of described fixed structure 03 and described vibrator coil 02, thus cause the sealing of described voice coil motor poor, make in the process moved reciprocatingly at described vibrator coil 02, extraneous dust can from described fixed structure 03, space between the sidewall of described housing 01 and described vibrator coil 02 enters the inside of described voice coil motor.
Summary of the invention
For solving the problems of the technologies described above, embodiments provide a kind of voice coil motor and a kind of camera head comprising this voice coil motor, to improve the sealing of described voice coil motor and described camera head.
For solving the problem, embodiments provide following technical scheme:
A kind of voice coil motor, comprising:
Vibrator coil;
Be positioned at the fixed structure be fixedly connected with described vibrator coil bottom described vibrator coil, described fixed structure comprises the first end and the second end that are oppositely arranged, and the fixed part between described first end and described the second end;
Be positioned at the cover plate at described fixed structure top, described cover plate near the lateral surface of described first end side and the medial surface of described first end overlapping perpendicular to described first end side surface direction upper part;
Be positioned at the bracing frame bottom described fixed structure, support frame as described above is near the lateral surface clamping of described the second end side and described the second end;
Dynamic structure, described dynamic structure drives described vibrator coil and described fixed structure to move reciprocatingly.
Preferably, described cover plate is being less than the first preset value near the lateral surface of described first end side and the medial surface of described first end perpendicular to the distance between in described first end side surface direction.
Preferably, described cover plate is contacting perpendicular to described first end side surface direction upper part with the medial surface of described first end near the lateral surface of described first end side.
Preferably, on the direction of described first end to described the second end, the projection of described first end only covers the subregion of described fixed part upper surface, and is the second preset value between the non-coated region in described fixed part upper surface and described cover plate, and described second preset value is greater than zero.
Preferably, described voice coil motor also comprises: be arranged at the housing outside described cover plate and support frame as described above, the lower surface of described case top directly contacts with the upper surface of described cover plate, and and distance between the upper surface of described first end be the 3rd preset value, described 3rd preset value is greater than zero.
Preferably, described dynamic structure comprises: be positioned at the space that described fixed structure, described cover plate and support frame as described above are formed, and be positioned at described vibrator coil and deviate from described supporting mechanism side electromagnetic structure.
Preferably, described dynamic structure also comprises: be arranged at the upper shell fragment of described cover plate towards described vibrator coil side; Be fixed on the lower shell fragment of support frame as described above towards vibrator coil side.
A kind of camera head, comprises voice coil motor described in above-mentioned any one.
Compared with prior art, technique scheme has the following advantages:
The voice coil motor that the embodiment of the present invention provides, comprise: vibrator coil, fixed structure, cover plate, bracing frame and dynamic structure, wherein, described fixed structure comprises the first end and the second end that are oppositely arranged, and the fixed part between described first end and described the second end, described cover plate near the lateral surface of described first end side and the medial surface of described first end overlapping perpendicular to described first end side surface direction upper part, support frame as described above is near the lateral surface clamping of described the second end side and described the second end, thus support frame as described above both can have been utilized to support to the direction of first end at described the second end, support frame as described above can be utilized again to be fixed described fixed structure from the both sides that described fixed structure is relative with described cover plate, thus described fixed structure not only can be avoided to rotate clockwise or counterclockwise, reduce motor inclination angle, improve motor and resolve power, can also in the vibration processes of described vibrator coil, ensure that not having dust between described first end medial surface and described patch ends lateral surface and between described the second end and support frame as described above enters, improve the sealing of described voice coil motor.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of voice coil motor in prior art;
The structural representation of the voice coil motor that Fig. 2 provides for one embodiment of the invention;
The structural representation of the voice coil motor that Fig. 3 provides for another embodiment of the present invention.
Embodiment
Just as described in the background section, in prior art, the sealing of voice coil motor is poor.
In view of this, embodiments provide a kind of voice coil motor, comprising:
Vibrator coil;
Be positioned at the fixed structure be fixedly connected with described vibrator coil bottom described vibrator coil, described fixed structure comprises the first end and the second end that are oppositely arranged, and the fixed part between described first end and described the second end;
Be positioned at the cover plate at described fixed structure top, described cover plate near the lateral surface of described first end side and the medial surface of described first end overlapping perpendicular to described first end side surface direction upper part;
Be positioned at the bracing frame bottom described fixed structure, support frame as described above is near the lateral surface clamping of described the second end side and described the second end;
Dynamic structure, described dynamic structure drives described vibrator coil and described fixed structure to move reciprocatingly.
In the voice coil motor that the embodiment of the present invention provides, described fixed structure comprises the first end and the second end that are oppositely arranged, and the fixed part between described first end and described the second end, described cover plate near the lateral surface of described first end side and the medial surface of described first end overlapping perpendicular to described first end side surface direction upper part, support frame as described above is near the lateral surface clamping of described the second end side and described the second end, thus support frame as described above both can have been utilized to support to the direction of first end at described the second end, support frame as described above can be utilized again to be fixed described fixed structure from the both sides that described fixed structure is relative with described cover plate, thus described fixed structure not only can be avoided to rotate clockwise or counterclockwise, reduce motor inclination angle, improve motor and resolve power, can also in the vibration processes of described vibrator coil, ensure that not having dust between described first end medial surface and described patch ends lateral surface and between described the second end and support frame as described above enters, improve the sealing of described voice coil motor.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Set forth a lot of detail in the following description so that fully understand the present invention, but the present invention can also adopt other to be different from alternate manner described here to implement, those skilled in the art can when without prejudice to doing similar popularization when intension of the present invention, therefore the present invention is by the restriction of following public specific embodiment.
As shown in Figure 2, embodiments provide a kind of voice coil motor, comprising:
Vibrator coil 1;
Be positioned at the fixed structure 2 be fixedly connected with described vibrator coil 1 bottom described vibrator coil 1, described fixed structure 2 comprises the first end 21 and the second end 22 that are oppositely arranged, and the fixed part 23 between described first end 21 and described the second end 22;
Be positioned at the cover plate 3 at described fixed structure 2 top, described cover plate 3 near the described lateral surface of first end 21 side and the medial surface of described first end 21 overlapping perpendicular to described first end 21 side surface direction upper part;
Be positioned at the bracing frame 4 bottom described fixed structure 2, support frame as described above 4 is near the lateral surface clamping of described the second end 22 side and described the second end 22;
Dynamic structure 5, described dynamic structure 5 drives described vibrator coil 1 and described fixed structure 2 to move reciprocatingly.
As from the foregoing, in embodiments of the present invention, support frame as described above 4 is near the lateral surface clamping of described the second end 22 side and described the second end 22, thus to enter described voice coil motor inner in the region that extraneous dust cannot be contacted from support frame as described above 4 with described the second end 22.
On the basis of above-described embodiment, in one embodiment of the invention, described cover plate 3 is being less than the first preset value near the described lateral surface of first end 21 side and the medial surface of described first end 21 perpendicular to the distance between in described first end 21 side surface direction, with ensure described vibrator coil 1 with described fixed structure 2 in reciprocating process, dust not easily to enter described voice coil motor from described cover plate 3 near the gap between the lateral surface and the medial surface of described first end 21 of described first end 21 side inner.Preferably, described cover plate 3 is contacting perpendicular to described first end 21 side surface direction upper part with the medial surface of described first end 21 near the lateral surface of described first end 21 side, namely described cover plate 3 is being zero near the described lateral surface of first end 21 side and the medial surface of described first end 21 perpendicular to the distance between in described first end 21 side surface direction, with ensure described vibrator coil 1 with described fixed structure 2 in reciprocating process, described cover plate 3 does not have gap near between the lateral surface and the medial surface of described first end 21 of described first end 21 side, but the present invention does not fix this, specifically depending on craft precision.
It should be noted that, when arranging the numerical value of described first preset value, except craft precision considered by needs, also need to consider that described cover plate 3 is near the frictional force between described first end 21 side lateral surface and described first end 21 medial surface, under the prerequisite contacted with described first end 21 medial surface near described first end 21 side lateral surface at described cover plate 3, when described institute cover plate 3 is less near the distance between described first end 21 side lateral surface and described first end 21 medial surface, described cover plate 3 is when the frictional force between described first end 21 side lateral surface and described first end 21 medial surface is larger, the resistance that described vibrator coil 1 and described fixed structure 2 are subject in reciprocating motion is larger.Therefore in a preferred embodiment of the present embodiment, described cover plate 3 is preferably shiny surface near described first end 21 side lateral surface, to reduce described cover plate 3 near the frictional force between described first end 21 side lateral surface and described first end 21 medial surface, namely reduce the resistance that described vibrator coil 1 and described fixed structure 2 be subject in reciprocating motion larger; In like manner, the medial surface of described first end 21 is also shiny surface, to reduce described cover plate 3 further near the frictional force between described first end 21 side lateral surface and described first end 21 medial surface, namely the resistance that described vibrator coil 1 and described fixed structure 2 be subject in reciprocating motion is reduced larger, but the present invention does not limit this, specifically depend on the circumstances.
On the basis of above-mentioned any embodiment, in one embodiment of the invention, on the direction of described first end 21 to described the second end 22, the projection of described first end 21 only covers the subregion of described fixed part 23 upper surface, and be the second preset value b between the non-coated region in described fixed part 23 upper surface and described cover plate 3, described second preset value b is greater than zero, to ensure that described vibrator coil 1 and described fixed structure 2 can move reciprocatingly along being parallel to the direction of described first end 21 to described the second end 22.
In another embodiment of the present invention, as shown in Figure 3, described voice coil motor also comprises: be arranged at the housing 6 outside described cover plate 3 and support frame as described above 4, the lower surface at described housing 6 top directly contacts with the upper surface of described cover plate 3, and and distance between the upper surface of described first end 21 be the 3rd preset value c, described 3rd preset value c is greater than zero, to ensure that described vibrator coil 1 and described fixed structure 2 can move reciprocatingly along being parallel to the direction of described first end 21 to described the second end 22.The present invention does not limit this, specifically depends on the circumstances.
In yet another embodiment of the present invention, described voice coil motor also comprises: be arranged at the housing 6 outside described cover plate 3 and support frame as described above 4, the lower surface at described housing 6 top directly contacts with the upper surface of described cover plate 3, and and distance between the upper surface of described first end 21 be the 3rd preset value c, described 3rd preset value c is greater than zero, and on the direction of described first end 21 to described the second end 22, the projection of described first end 21 only covers the subregion of described fixed part 23 upper surface, and be the second preset value b between the non-coated region in described fixed part 23 upper surface and described cover plate 3, described second preset value b is greater than zero.In embodiments of the present invention, except by except the restriction of described dynamic structure 5, the impact of described second preset value and described 3rd preset value is also subject to.
Concrete, when the power that described dynamic structure 5 can provide is enough large, described vibrator coil 1 is determined by described second preset value or described 3rd preset value with the Oscillation Amplitude of described fixed structure 2; When described second preset value is less than described 3rd preset value, described vibrator coil 1 is determined by described second preset value with the Oscillation Amplitude of described fixed structure 2; When described second preset value is greater than described 3rd preset value, described vibrator coil 1 is determined by described 3rd preset value with the Oscillation Amplitude of described fixed structure 2.When described dynamic structure 5 provide be short of power time, the power that described vibrator coil 1 can be provided by described dynamic structure 5 with the Oscillation Amplitude of described fixed structure 2 determines, the present invention does not limit this, specifically depends on the circumstances.
On the basis of above-mentioned any embodiment, in one embodiment of the invention, described dynamic structure 5 comprises: be positioned at the space that described fixed structure 2, described cover plate 3 and support frame as described above 4 are formed, and be positioned at described vibrator coil 1 and deviate from described fixed structure 2 side electromagnetic structure.In the present embodiment, described vibrator coil 1 and described fixed structure 2 move reciprocatingly under the effect of described electromagnetic structure.It should be noted that, in the present embodiment, by sense of current in electromagnetic structure described in periodically-varied, the direction of motion of described vibrator coil 1 and described fixed structure 2 can be changed.
On the basis of above-mentioned any embodiment, in another embodiment of the present invention, described dynamic structure 5 also comprises: be arranged at the upper shell fragment of described cover plate 3 towards described vibrator coil 1 side; Be fixed on the lower shell fragment of support frame as described above 4 towards vibrator coil 1 side.In embodiments of the present invention, described vibrator coil 1 and described fixed structure 2, under the effect of described electromagnetic structure, move along a direction, on described shell fragment and described lower shell fragment effect under, move in opposite directions, the present invention does not limit this, specifically depends on the circumstances.
Accordingly, the embodiment of the present invention additionally provides a kind of camera head comprising the voice coil motor that above-mentioned any embodiment provides.
In sum, the voice coil motor that the embodiment of the present invention provides and the camera head comprising this voice coil motor, comprise: vibrator coil 1, fixed structure 2, cover plate 3, bracing frame 4 and dynamic structure 5, wherein, described fixed structure 2 comprises the first end 21 and the second end 22 that are oppositely arranged, and the fixed part 23 between described first end 21 and described the second end 22, described cover plate 3 near the described lateral surface of first end 21 side and the medial surface of described first end 21 overlapping perpendicular to described first end 21 side surface direction upper part, support frame as described above 4 is near the lateral surface clamping of described the second end 22 side and described the second end 22, thus support frame as described above 4 both can have been utilized to support on the direction of described the second end 22 to first end 21, support frame as described above 4 can be utilized again to be fixed described fixed structure 2 from the both sides that described fixed structure 2 is relative with described cover plate 3, thus described fixed structure 2 not only can be avoided to rotate clockwise or counterclockwise, reduce motor inclination angle, improve motor and resolve power, can also in the vibration processes of described vibrator coil 1, ensure between described first end 21 medial surface and described cover plate 3 end lateral surface and between described the second end 22 and support frame as described above 4, do not have dust to enter, improve the sealing of described voice coil motor, and then improve the reliability of described voice coil motor and described camera head and produce yield.
In this specification, various piece adopts the mode of going forward one by one to describe, and what each some importance illustrated is the difference with other parts, between various piece identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to embodiment illustrated herein, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. a voice coil motor, is characterized in that, comprising:
Vibrator coil;
Be positioned at the fixed structure be fixedly connected with described vibrator coil bottom described vibrator coil, described fixed structure comprises the first end and the second end that are oppositely arranged, and the fixed part between described first end and described the second end;
Be positioned at the cover plate at described fixed structure top, described cover plate near the lateral surface of described first end side and the medial surface of described first end overlapping perpendicular to described first end side surface direction upper part;
Be positioned at the bracing frame bottom described fixed structure, support frame as described above is near the lateral surface clamping of described the second end side and described the second end;
Dynamic structure, described dynamic structure drives described vibrator coil and described fixed structure to move reciprocatingly.
2. voice coil motor according to claim 1, is characterized in that, described cover plate is being less than the first preset value near the lateral surface of described first end side and the medial surface of described first end perpendicular to the distance between in described first end side surface direction.
3. voice coil motor according to claim 2, is characterized in that, described cover plate is contacting perpendicular to described first end side surface direction upper part with the medial surface of described first end near the lateral surface of described first end side.
4. the voice coil motor according to any one of claim 1-3, it is characterized in that, on the direction of described first end to described the second end, the projection of described first end only covers the subregion of described fixed part upper surface, and be the second preset value between the non-coated region in described fixed part upper surface and described cover plate, described second preset value is greater than zero.
5. the voice coil motor according to any one of claim 1-3, it is characterized in that, described voice coil motor also comprises: be arranged at the housing outside described cover plate and support frame as described above, the lower surface of described case top directly contacts with the upper surface of described cover plate, and and distance between the upper surface of described first end be the 3rd preset value, described 3rd preset value is greater than zero.
6. voice coil motor according to claim 1, is characterized in that, described dynamic structure comprises: be positioned at the space that described fixed structure, described cover plate and support frame as described above are formed, and be positioned at described vibrator coil and deviate from described supporting mechanism side electromagnetic structure.
7. voice coil motor according to claim 6, is characterized in that, described dynamic structure also comprises: be arranged at the upper shell fragment of described cover plate towards described vibrator coil side; Be fixed on the lower shell fragment of support frame as described above towards vibrator coil side.
8. a camera head, is characterized in that, comprises voice coil motor described in any one of claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610094913.3A CN105490502B (en) | 2016-02-19 | 2016-02-19 | A kind of voice coil motor and photographic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610094913.3A CN105490502B (en) | 2016-02-19 | 2016-02-19 | A kind of voice coil motor and photographic device |
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| Publication Number | Publication Date |
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| CN105490502A true CN105490502A (en) | 2016-04-13 |
| CN105490502B CN105490502B (en) | 2018-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610094913.3A Active CN105490502B (en) | 2016-02-19 | 2016-02-19 | A kind of voice coil motor and photographic device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2561361B2 (en) * | 1990-04-16 | 1996-12-04 | キヤノン株式会社 | Linear drive |
| CN202758125U (en) * | 2012-06-20 | 2013-02-27 | 瑞声声学科技(苏州)有限公司 | Lens driving device |
| CN103178683A (en) * | 2011-12-22 | 2013-06-26 | 鸿富锦精密工业（深圳）有限公司 | Voice coil motor |
| CN104079138A (en) * | 2013-03-26 | 2014-10-01 | 闳晖实业股份有限公司 | Voice coil motor actuator and manufacturing method of voice coil motor actuator |
| CN203912055U (en) * | 2014-05-04 | 2014-10-29 | 光宝电子(广州)有限公司 | Voice coil motor and camera module |
| CN104868692A (en) * | 2010-07-19 | 2015-08-26 | Lg伊诺特有限公司 | Voice coil motor |
-
2016
- 2016-02-19 CN CN201610094913.3A patent/CN105490502B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2561361B2 (en) * | 1990-04-16 | 1996-12-04 | キヤノン株式会社 | Linear drive |
| CN104868692A (en) * | 2010-07-19 | 2015-08-26 | Lg伊诺特有限公司 | Voice coil motor |
| CN103178683A (en) * | 2011-12-22 | 2013-06-26 | 鸿富锦精密工业（深圳）有限公司 | Voice coil motor |
| CN202758125U (en) * | 2012-06-20 | 2013-02-27 | 瑞声声学科技(苏州)有限公司 | Lens driving device |
| CN104079138A (en) * | 2013-03-26 | 2014-10-01 | 闳晖实业股份有限公司 | Voice coil motor actuator and manufacturing method of voice coil motor actuator |
| CN203912055U (en) * | 2014-05-04 | 2014-10-29 | 光宝电子(广州)有限公司 | Voice coil motor and camera module |
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| Publication number | Publication date |
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| CN105490502B (en) | 2018-09-07 |
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