CN114157800A - Drive module, camera device and electronic equipment - Google Patents
Drive module, camera device and electronic equipment Download PDFInfo
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- CN114157800A CN114157800A CN202010928449.XA CN202010928449A CN114157800A CN 114157800 A CN114157800 A CN 114157800A CN 202010928449 A CN202010928449 A CN 202010928449A CN 114157800 A CN114157800 A CN 114157800A
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- 230000003287 optical effect Effects 0.000 description 16
- 230000009286 beneficial effect Effects 0.000 description 4
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
- H04N23/682—Vibration or motion blur correction
- H04N23/685—Vibration or motion blur correction performed by mechanical compensation
- H04N23/687—Vibration or motion blur correction performed by mechanical compensation by shifting the lens or sensor position
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/67—Focus control based on electronic image sensor signals
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- Signal Processing (AREA)
- Adjustment Of Camera Lenses (AREA)
- Lens Barrels (AREA)
Abstract
The present disclosure provides a drive module, a camera device and an electronic apparatus. The drive module includes: at least one elastic piece, lens holder and magnetic assembly. The elastic part comprises at least one first elastic connecting body stretching along a first direction and at least one second elastic connecting body stretching along a second direction, and the first direction is different from the second direction. The lens support is connected with the first elastic connector. The magnetic component is connected between the first elastic connecting body and the second elastic connecting body. Based on first elastic connection body and second elastic connection body form as an organic whole, make the elastic component can follow two at least directions and stretch out and draw back, and convenient the equipment, do benefit to the manufacturing cost who reduces drive module and realize the volume production.
Description
Technical Field
The present disclosure relates to the field of electronic devices, and in particular, to a driving module, a camera device, and an electronic device.
Background
Electronic equipment such as a mobile phone or a tablet computer is provided with a camera device, and when the camera device is used for shooting for a long time, shaking is caused by shaking of hands, so that a shot picture or a shot video is blurred. Based on the shake direction and shake displacement of the lens, the lens is controlled to perform compensation motion through the driving module, so that the quality of pictures or videos shot by the camera device can be ensured. However, the driving module has a single expansion direction of the elastic member, and a larger number of elastic members are required to be disposed, which makes the driving module difficult to assemble, reduce the cost and achieve mass production.
Disclosure of Invention
The utility model provides a drive module, camera device and electronic equipment, drive module's elastic component has two at least flexible directions to reduce the quantity that sets up of elastic component, make things convenient for the equipment of drive module, reduction in production cost and realize the volume production.
One aspect of the present disclosure provides a driving module for a camera device, the driving module including:
at least one elastic member, the elastic member comprising at least one first elastic connecting body that stretches in a first direction and at least one second elastic connecting body that stretches in a second direction, the first direction and the second direction being different;
the lens bracket is connected with the first elastic connecting body; and
a magnetic assembly coupled between the first and second elastic connectors.
Optionally, the first elastic connecting body includes a first elastic connecting portion extending and retracting along the first direction, and the first direction is parallel to the axial direction of the lens holder.
Optionally, the second elastic connecting body includes a second elastic connecting portion extending and retracting along the second direction, and the second direction is perpendicular to the axial direction of the lens holder.
Optionally, the second elastic connecting body includes a second elastic connecting portion extending and retracting along a third direction, the third direction is a rotation direction around a fourth direction, and the fourth direction is perpendicular to the axis of the lens holder.
Optionally, the driving module further includes a housing assembly, the elastic member further includes an inner frame, a middle frame and an outer frame sequentially arranged from inside to outside, the first elastic connector is connected between the inner frame and the middle frame, the second elastic connector is connected between the middle frame and the outer frame, the inner frame is connected with the lens holder, the middle frame is connected with the magnetic assembly, and the outer frame is fixed in the housing assembly.
Optionally, the middle frame includes a plurality of separately disposed middle frame portions, each of the middle frame portions is connected to the inner frame through the first elastic connecting body, and each of the middle frame portions is further connected to the outer frame through the second elastic connecting body.
Optionally, the driving module further includes a housing assembly, the magnetic assembly and the lens holder are disposed in the housing assembly, the magnetic assembly includes a carrying bracket and a plurality of magnets, the carrying bracket is connected between the first elastic connector and the second elastic connector, and the plurality of magnets are disposed on the carrying bracket.
Optionally, the driving module further includes a first anti-shake coil, the first anti-shake coil is assembled on a side wall of the housing assembly, an axis of the first anti-shake coil intersects with an axis of the lens holder, the first anti-shake coil is opposite to the magnet, the first anti-shake coil is configured to drive the magnet to move along a second direction, and the second direction is perpendicular to the axis direction of the lens holder.
Optionally, the driving module further includes a second anti-shake coil, the second anti-shake coil is assembled on the inner wall of the housing assembly, an axis of the second anti-shake coil is parallel to an axis of the lens holder, the second anti-shake coil is opposite to the magnet, the second anti-shake coil is configured to drive the magnet to move along a third direction, the third direction is a rotation direction around a fourth direction, and the fourth direction is perpendicular to the axis of the lens holder.
Optionally, the driving module further includes an auto-focus coil, the auto-focus coil is assembled to the lens holder, an axis of the auto-focus coil is parallel to an axis of the lens holder, the auto-focus coil is opposite to the magnet, and the auto-focus coil is configured to drive the lens holder to move along a first direction, where the first direction is parallel to the axis direction of the lens holder.
Another aspect of the present disclosure provides an image pickup apparatus including the driving module of any one of the above-mentioned.
Another aspect of the present disclosure provides an electronic apparatus including the image pickup device mentioned above.
The technical scheme provided by the disclosure at least has the following beneficial effects:
the drive module that this disclosed embodiment provided, based on the elastic component include along the flexible at least one first elastic connection body of first direction and along the flexible at least one second elastic connection body of second direction, like this, make first elastic connection body and second elastic connection body form an organic whole, make the elastic component have more flexible direction, do benefit to the figure that reduces the elastic component, make things convenient for the equipment of drive module, do benefit to reduce cost and realize the volume production. Based on the lens support is connected with the first elastic connecting body, the magnetic assembly is connected between the first elastic connecting body and the second elastic connecting body, so that the lens support moves along the first direction under the traction of the first elastic connecting body, and under the matching action of the first elastic connecting body and the second elastic connecting body, the magnetic assembly drives the lens support to move along the second direction, and based on the difference of the first direction and the second direction, the automatic focusing function and the optical anti-shaking function are realized.
Drawings
FIG. 1 illustrates a partial cross-sectional view of a drive module according to an exemplary embodiment of the present disclosure;
FIG. 2 is an exploded schematic view of a drive module shown in accordance with an exemplary embodiment of the present disclosure;
FIG. 3 illustrates a schematic structural view of a spring according to an exemplary embodiment of the present disclosure;
FIG. 4 is a graph illustrating the movement of the lens holder and the magnetic assembly in a drive module according to an exemplary embodiment of the present disclosure;
FIG. 5 illustrates a partial cross-sectional view of a drive module according to an exemplary embodiment of the present disclosure;
fig. 6 is an exploded schematic view of a drive module according to an exemplary embodiment of the present disclosure.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in the description and claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. Unless otherwise indicated, the word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprises" or "comprising" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
As used in this disclosure and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
In some embodiments, the image capturing apparatus includes a driving module, and the driving module drives the lens to move so as to implement an auto-focusing function and an optical anti-shake function. Wherein, the drive module includes: the camera lens comprises an upper shell, a bottom cover, a lens bracket, a magnetic assembly, a plurality of elastic pieces, an automatic focusing coil and an anti-shake coil. The upper shell and the bottom cover are matched to form an accommodating cavity, the lens support is used for assembling a lens, the lens support and the magnetic assembly are connected between the two elastic pieces, and the magnetic assembly is further connected with the bottom cover through one elastic piece. The auto-focusing coil is assembled on the lens bracket, and the anti-shaking coil is assembled on the side wall of the upper shell and is opposite to the magnetic component. The lens support is made to stretch along the axis direction through the matching of the automatic focusing coil, the magnetic assembly and the elastic pieces, so that the automatic focusing function of the lens mounted on the lens support is realized. Through anti-shake coil, magnetic component and the cooperation of a plurality of elastic component, make the lens holder stretch out and draw back along the direction of perpendicular to axis to realize optics anti-shake function. However, the number of the elastic members of the driving module is large, so that the driving module is not easy to assemble, and is not beneficial to reducing the cost and realizing mass production.
In order to solve the above problem, an embodiment of the present disclosure provides a driving module, an image pickup apparatus, and an electronic device.
Some embodiments of the present disclosure provide an electronic device including, but not limited to: the intelligent mobile phone comprises a mobile phone, a tablet computer, an iPad, a digital broadcast terminal, a messaging device, a game console, a medical device, a fitness device, a personal digital assistant, an intelligent wearable device, an intelligent television, a sweeping robot, an intelligent sound box and the like. The electronic equipment comprises a camera device, and the camera device comprises a driving module.
Fig. 1 is a partial sectional view illustrating a driving module according to an exemplary embodiment of the present disclosure, fig. 2 is an exploded view illustrating a driving module according to an exemplary embodiment of the present disclosure, and fig. 3 is a schematic structural view illustrating an elastic member according to an exemplary embodiment of the present disclosure. In the disclosed embodiments, references to "up", "down" or "bottom" orientations are made with reference to "up" and "down" directions as shown in fig. 1 and 2.
Some embodiments of the present disclosure provide a driving module for a camera device, which may be a motor. With combined reference to fig. 1 and 2, the driving module includes: at least one elastic member 120, a lens holder 140, and a magnetic assembly 150. The driving module further includes a housing assembly 110, and the magnetic assembly 150 and the lens holder 140 are disposed in the housing assembly 110. The housing assembly 110 includes a receiving cavity 111 for receiving other components. Illustratively, the housing assembly 110 includes an upper housing 112 and a bottom cover 113, the upper housing 112 and the bottom cover 113 cooperating to form a receiving cavity 111.
The elastic member 120 may be assembled in the receiving cavity 111 of the housing assembly 110. The number of the elastic members 120 may be one or more, and the elastic members 120 include two elastic members disposed opposite to each other on the premise of ensuring the elastic stability. Referring to fig. 3, the elastic member 120 includes at least one first elastic connection body 124 that extends and contracts in a first direction and at least one second elastic connection body 125 that extends and contracts in a second direction, the first direction and the second direction being different. It will be appreciated that there is an angle between the first direction and the second direction.
The lens holder 140 is connected to the first elastic connection body 124. The magnetic assembly 150 is connected between the first elastic connection body 124 and the second elastic connection body 125. It is understood that the lens holder 140 is suspended from the inner cavity of the magnetic assembly 150 by the at least one first elastic connection 124 of the elastic member 120. The magnetic assembly 150 is suspended from the accommodating cavity 111 of the housing assembly 110 by at least one second elastic connecting body 125 of the elastic member 120. That is, the lens holder 140 and the magnetic assembly 150 are suspended from the receiving cavity 111 of the housing assembly 110 by at least one elastic member 120. Illustratively, the number of the elastic members 120 is two, the two elastic members 120 are disposed opposite to each other, and the lens holder 140 and the magnetic assembly 150 are coupled between the two elastic members 120. The lens holder 140 and the magnetic assembly 150 can be used as the mover of the driving module. The lens holder 140 is used for mounting a lens (not shown), and the lens holder 140 is driven to drive the lens to move, so that an automatic focusing function and an optical anti-shake function can be realized. The "axis 201 of the lens holder 140" according to the embodiment of the present disclosure coincides with or is parallel to the optical axis of the lens, and the axis of the component which is not explicitly indicated in the following may be regarded as the axis 201 of the lens holder 140.
The drive module that this disclosed embodiment provided, based on elastic component 120 includes along the flexible at least one first elastic connection body 124 of first direction and along the flexible at least one second elastic connection body 125 of second direction, like this, make first elastic connection body 124 and second elastic connection body 125 form as an organic whole, make elastic component 120 have more flexible direction, do benefit to and reduce the figure of elastic component 120, make things convenient for the equipment of drive module, do benefit to reduce cost and realize volume production. Based on the connection of the lens holder 140 and the first elastic connection body 124, the magnetic assembly 150 is connected between the first elastic connection body 124 and the second elastic connection body 125, so that the lens holder 140 moves along the first direction under the traction of the first elastic connection body 124, and under the cooperation of the first elastic connection body 124 and the second elastic connection body 125, the magnetic assembly 150 drives the lens holder 140 to move along the second direction, and based on the difference between the first direction and the second direction, the automatic focusing function and the optical anti-shake function are realized.
In some embodiments, with continued reference to fig. 3, the elastic member 120 further includes an inner frame 121, an intermediate frame 122, and an outer frame 123 sequentially arranged from inside to outside, the first elastic connecting body 124 is connected between the inner frame 121 and the intermediate frame 122, the second elastic connecting body 125 is connected between the intermediate frame 122 and the outer frame 123, the inner frame 121 is connected to the lens holder 140, the intermediate frame 122 is connected to the magnetic assembly 150, and the outer frame 123 is fixed in the housing assembly 110. Illustratively, an outer frame 123 of the elastic member 120 is fixed to an inner wall of the upper housing 112, and an outer frame 123 of the elastic member 120 is fixed to an inner wall of the bottom cover 113. It should be noted that the elastic member 120 may be a planar spring structure, and the elastic member 120 may be a planar structure in the absence of an applied force. Because the elastic member 120 is formed into an integral structure, the elastic member 120 of the structure can stretch and retract along at least two directions, which reduces the number of structural components of the driving module, facilitates the assembly between the elastic member 120 and other components, and is beneficial to reducing the production cost of the driving module and improving the yield.
In some embodiments, with continued reference to fig. 3, the middle frame 122 includes a plurality of separately disposed middle frame portions 128, each middle frame portion 128 connected to the inner frame 121 by a first elastic connector 124, each middle frame portion 128 further connected to the outer frame 123 by a second elastic connector 125. Therefore, the middle frame 122, the inner frame 121, the first elastic connecting body 124 and the second elastic connecting body 125 are matched to have a good elastic effect, so that the lens holder 140 can drive the inner frame 121 to move along the first direction under the traction of the first elastic connecting body 124, the magnetic assembly 150 can drive the middle frame 122 to move along the second direction under the traction of the second elastic connecting body 125, and the magnetic assembly 150 can drive the middle frame 122 to move along the third direction under the traction of the second elastic connecting body 125.
Illustratively, with continued reference to fig. 3, the outer frame 123 has a frame structure, the number of the middle frame portions 128 is four, and the middle frame portions are respectively provided at four corners of the outer frame 123, and the inner frame 121 is a circular frame. Each of the first elastic connection bodies 124 and the second elastic connection bodies 125 may be four in number, each of the first elastic connection bodies 124 is telescopically connected to the inner frame 121 and one of the middle frame portions 128 in a radial direction of the inner frame 121, and each of the second elastic connection bodies 125 is telescopically connected to the outer frame 123 and one of the middle frame portions 128 along an edge of the outer frame 123.
In some embodiments, with continued reference to fig. 3, the first elastic connector 124 includes a first elastic connector 126 that telescopes in a first direction, the first direction being parallel to the direction of the axis 201 of the lens holder 140. For example, the first elastic connecting portion 126 extends and contracts in the direction of the axis 201 of the lens holder 140. It should be noted that the elastic coefficient of the first elastic connection portion 126 in the first direction is small, and the elastic coefficient in the direction perpendicular to the first direction is large, so that the first elastic connection portion 126 is easy to stretch in the first direction, and is not easy to stretch in the direction perpendicular to the axis 201 of the lens holder 140. The elastic modulus of the first elastic connecting portion 126 can be adjusted by adjusting the material, structure and size. Illustratively, with continued reference to fig. 3, first elastic connecting portion 126 extends in a radial direction of inner frame 121 to facilitate expansion and contraction of first elastic connecting portion 126 in the direction of axis 201. It should be noted that the radial direction of the inner frame 121 refers to the direction perpendicular to the axis 201, the first elastic connection portion 126 is a part of the first elastic connection body 124, for example, two ends of the first elastic connection body 124 are respectively connected to other components, and the middle of the first elastic connection body 124 is the first elastic connection portion 126. Illustratively, the first elastic connection 126 may be a spring. Based on the first elastic connection portion 126 being able to extend and retract along the first direction, the lens holder 140 can move along the axis 201 under the traction of the first elastic connection portion 126, so as to implement the auto-focusing function. Illustratively, with continued reference to fig. 3, the number of the first elastic connection bodies 124 is four, and the four first elastic connection bodies 124 cooperate to draw the lens holder 140 to move along the direction of the axis 201, so as to realize the auto-focusing function.
In some embodiments, with continued reference to fig. 3, the second elastic connecting body 125 includes a second elastic connecting portion 127 that extends and contracts along a second direction, which is perpendicular to the direction of the axis 201 of the lens holder 140. That is, the second elastic connecting portion 127 extends and contracts in a direction perpendicular to the axis 201 of the lens holder 140. The second elastic connecting portion 127 is a part of the second elastic connecting body 125, for example, two ends of the second elastic connecting body 125 are respectively connected to other components, and the middle of the second elastic connecting body 124 is the second elastic connecting portion 127. The second elastic connecting portion 127 has a large elastic coefficient along the axis 201 direction of the lens holder 140 and a small elastic coefficient along the second direction, which makes the second elastic connecting portion 127 easily extend and contract along the second direction and hardly extend and contract along the axis 201 direction. The elastic modulus of the second elastic connection part 127 can be adjusted by adjusting materials, structures and dimensions. Illustratively, with continued reference to fig. 3, the second elastic connecting portion 127 is curved and extends along the frame of the outer frame 123 to facilitate the second elastic connecting portion 127 to extend and retract along the second direction. Exemplarily, the second elastic connection part 127 may be a spring. Based on second elastic connecting portion 127 can stretch out and draw back along the second direction, magnetic component 150 can move along the second direction, because first elastic connecting portion 126 is difficult for stretching out and drawing back along perpendicular to axis 201 direction, this makes magnetic component 150 give lens holder 140 effort through first elastic connecting portion 126, and then magnetic component 150 and lens holder 140 move along the second direction simultaneously, do benefit to and realize optics anti-shake function. Also, the gap between the magnetic assembly 150 and the lens holder 140 can be maintained without interfering with the auto-focus function. Illustratively, with continued reference to FIG. 3, the number of second elastic connectors 125 is four, wherein two opposing second elastic connectors 125 form a group and the other two opposing second elastic connectors 125 form a group. The lens holder 140 is driven by one or two sets of second elastic connectors 125 in cooperation with the magnetic pulling assembly 150 to move in a direction perpendicular to the axis 201, so as to achieve the optical anti-shake function.
In some embodiments, with continued reference to fig. 3, the second elastic connecting body 125 includes a second elastic connecting portion 127 that extends and contracts along a third direction, which is a rotation direction around a fourth direction perpendicular to the axis 201 of the lens holder 140. For example, the second elastic connecting portion 127 can be rotated and extended in any direction perpendicular to the axis 201. The second elastic connection portion 127 may be the same as the second elastic connection portion 127. Thus, the magnetic assembly 150 drives the lens holder 140 to rotate through the second elastic connecting portion 127, so as to achieve the optical anti-shake function. For example, with reference to fig. 3, the lens holder 140 is driven to rotate around a direction perpendicular to the axis 201 by a set of the second elastic connection bodies 125 in cooperation with the magnetic pulling assembly 150, and the lens holder 140 is driven to rotate around another direction perpendicular to the axis 201 by another set of the second elastic connection bodies 125 in cooperation with the magnetic pulling assembly 150, where the another direction may be perpendicular to the one direction. The lens holder 140 can be driven to rotate around any direction perpendicular to the axis 201 by all the second elastic connectors 125 in cooperation with the pulling magnetic assembly 150.
In some embodiments, with continued reference to fig. 1 and 2, the magnetic assembly 150 includes a carrier bracket 151 and a plurality of magnets 152, the carrier bracket 151 being coupled between the first elastic coupling body 124 and the second elastic coupling body 125, the plurality of magnets 152 being disposed on the carrier bracket 151. Illustratively, one end of the supporting bracket 151 is connected to the upper elastic member 120, and the other end of the supporting bracket 151 is connected to the lower elastic member 120. Illustratively, the plurality of magnets 152 are uniformly arranged on the supporting bracket 151 to generate a uniform magnetic field. Illustratively, the supporting bracket 151 has a frame-shaped structure, the number of the magnets 152 is four, and one magnet 152 is disposed on each frame of the supporting bracket 151. Illustratively, the magnetic poles of the plurality of magnets 152 are the same on the side facing the inside of the carrier 151 and the magnetic poles of the plurality of magnets 152 are the same on the side facing away from the inside of the carrier 151. Illustratively, the magnet 152 includes a magnet or a permanent magnet.
In some embodiments, with continued reference to fig. 1 and 2, the driving module further includes an auto-focus coil 160, the auto-focus coil 160 is assembled to the lens holder 140, an axis of the auto-focus coil 160 is parallel to an axis 201 of the lens holder 140, the auto-focus coil 160 is opposite to the magnet 152, and the auto-focus coil 160 is used for driving the lens holder 140 to move along a first direction, which is parallel to an axial direction of the lens holder 140. It should be noted that the magnetic induction lines generated by the magnets 152 may be parallel to the auto-focusing coil 160, so that according to the left-hand rule, when the auto-focusing coil 160 is energized with current, the auto-focusing coil 160 generates a force along the first direction under the action of the magnetic induction lines of the plurality of magnets 152, and further drives the lens holder 140 to move along the axis 201, so as to implement the auto-focusing function. For example, the first elastic connection body 124 of the elastic member 120, the magnetic assembly 150 and the autofocus coil 160 cooperate to realize the autofocus function. For example, the auto-focus coil 160 may be wound around an outer wall of the lens holder 140 in a circumferential direction of the lens holder 140. Illustratively, the plurality of magnets 152 have the same magnetic polarity facing the autofocus coil 160, which facilitates the generation of a co-directional force on the portions of the autofocus coil 160 opposite the magnets 152, and facilitates the stable movement of the autofocus coil 160 with the lens holder 140.
FIG. 4 is a graph illustrating the movement of the lens holder and the magnetic assembly in a drive module according to an exemplary embodiment of the present disclosure. Referring to fig. 4, the first direction may be a z-axis direction, and the auto-focus coil 160 drives the lens holder 140 to move along the z-axis direction. For example, the center of the lens holder 140 is located at o 2.
In some embodiments, with continued reference to fig. 1 and 2, the driving module further includes a first anti-shake coil 171, the first anti-shake coil 171 is assembled on a side wall of the housing assembly 110, an axis of the first anti-shake coil 171 intersects with an axis 201 of the lens holder 140, the first anti-shake coil 171 is opposite to the magnet 152, and the first anti-shake coil 171 is configured to drive the magnet 152 to move along a second direction, which is perpendicular to an axial direction of the lens holder 140. When a current is applied to the first anti-shake coil 171, according to the right-hand rule, the first anti-shake coil 171 is equivalent to an electromagnet, and an interaction force is generated between the N pole or S pole of the electromagnet and the magnet 152, so that the magnetic assembly 150 moves along a second direction, for example, along any one of the planes formed by the x1 axis and the y1 axis in fig. 4. That is, the magnetic assembly 150 is moved in a direction perpendicular to the axis 201. Under the restriction of the first elastic connection body 124, the magnetic assembly 150 drives the lens holder 140 to move along the second direction, so as to achieve the optical anti-shake function. Through the cooperation of the first elastic connection portion 126, the second elastic connection portion 127, the inner frame 121 and the middle frame 122 of the elastic member 120, the magnetic assembly 150 can drive the lens holder 140 to move, so that the relative position between the magnetic assembly 150 and the lens holder 140 remains unchanged, which does not affect the auto-focusing function. Illustratively, the axis of the first anti-shake coil 171 is perpendicular to the axis 201 of the lens holder 140.
Illustratively, referring to fig. 2, the number of the first anti-shake coils 171 is four, and four first anti-shake coils 171 and four second elastic connection bodies 125 and four magnets 152 are disposed correspondingly. The two opposite first anti-shake coils 171 form one group, and the other two opposite first anti-shake coils 171 form another group, so that the magnetic assembly 150 can be driven to drive the lens holder 140 to move along the direction perpendicular to the axis 201 by controlling the magnitude and direction of the current in one or two groups of first anti-shake coils 171, thereby implementing the optical anti-shake function.
Exemplarily, with continued reference to fig. 2, the driving module further includes a first anti-shake bracket 172, the first anti-shake bracket 172 is assembled on the inner wall of the upper housing 112, the number of the first anti-shake coils 171 is plural, the plural first anti-shake coils 171 are uniformly distributed on the first anti-shake bracket 172 along the circumferential direction, and the plural first anti-shake coils 171 cooperate to push the magnetic assembly 150 to move. Illustratively, the number of the first anti-shake coils 171 is four, and each first anti-shake coil 171 corresponds to one magnet 152. The magnitude and direction of the current flowing through the first anti-shake coil 171 at different positions can be set according to actual requirements, and are not particularly limited herein.
Based on the above, the auto-focus coil 160 and the first anti-shake coil 171 are both disposed opposite to the magnet 152, that is, the lens holder 140, the auto-focus coil 160, the magnetic assembly 150, and the first anti-shake coil 171 are nested from inside to outside, so that the auto-focus coil 160 and the first anti-shake coil 171 share the magnetic assembly 150, which not only reduces the number of the magnets 152 and facilitates the assembly of the driving module, but also reduces the size of the driving module (the height of the driving module) along the axis 201 direction of the lens holder 140, thereby facilitating the high integration of the image pickup device and the electronic device.
Fig. 5 is a partial cross-sectional view of a drive module shown in accordance with an exemplary embodiment of the present disclosure, and fig. 6 is an exploded schematic view of a drive module shown in accordance with an exemplary embodiment of the present disclosure. Fig. 5 is similar to fig. 1, fig. 6 is similar to fig. 2, but fig. 5 and 6 have more second anti-shake coils 181 and their related components than fig. 1 and 2. In some embodiments, referring to fig. 5 and 6, the driving module further includes a second anti-shake coil 181, the second anti-shake coil 181 is assembled on an inner wall of the housing assembly 110, an axis of the second anti-shake coil 181 is parallel to an axis 201 of the lens holder 140, the second anti-shake coil 181 is opposite to the magnet 152, the second anti-shake coil 181 is configured to drive the magnet 152 to move along a third direction, the third direction is a rotation direction around a fourth direction, and the fourth direction is perpendicular to the axis 201 of the lens holder 140. In other words, the second anti-shake coil 181 is used to drive the magnet 152 to rotate about a direction perpendicular to the axis 201. In fig. 4, the fourth direction may be any direction between the x2 axis and the y2 axis, and the third direction is a direction of rotation about any one of the foregoing directions. Illustratively, the second anti-shake coil 181 is assembled between the elastic member 120 and the bottom cover 113, and the second anti-shake coil 181 is located at the bottom of the magnet 152. Illustratively, the second anti-shake coil 181 includes a coil region and a hollow region, the hollow region being opposite to the magnet 152, which may cause magnetic induction lines generated by the magnet 152 to be wound around the coil region. Thus, according to the left-hand rule, when current is applied to the second anti-shake coil 181, the second anti-shake coil 181 generates a force in the fourth direction under the magnetic induction line effect of the magnet 152, and the magnetic assembly 150 drives the lens holder 140 to deflect based on the position fixation of the second anti-shake coil 181, so as to realize the optical anti-shake function.
For example, the second elastic connection portion 127 of the second elastic connection body 125 of the elastic element 120 and the second anti-shake coil 181 cooperate to enable the magnetic element 150 to drive the lens holder 140 to rotate around a direction perpendicular to the axis 201, for example, the magnetic element 150 drives the lens holder 140 to rotate around any line in the x2y2o2 plane, so as to implement the optical anti-shake function.
Illustratively, the number of the second anti-shake coils 181 is four, and four second anti-shake coils 181 are disposed corresponding to four second elastic connection bodies 125 and four magnets 152. Two opposite second anti-shake coils 181 form one group, and two other opposite second anti-shake coils 181 form another group, and the magnetic assembly 150 can be driven to rotate the lens holder 140 around a direction perpendicular to the axis 201 by controlling the magnitude and direction of the current in one or two groups of second anti-shake coils 181, such as around the x2 axis or the y2 axis, so as to achieve the optical anti-shake function.
Exemplarily, with reference to fig. 6, the driving module further includes a second anti-shake bracket 182, the second anti-shake bracket 182 is assembled on an inner wall of the bottom cover 113, the number of the second anti-shake coils 181 is multiple, the multiple second anti-shake coils 181 are arranged on the second anti-shake bracket 182 along the circumferential direction of the second anti-shake bracket 182, and the axis of the second anti-shake bracket 182 is parallel to the axis 201 of the lens holder 140. Illustratively, the number of the second anti-shake coils 181 is the same as the number of the magnets 152, and the second anti-shake coils 181 and the magnets 152 correspond one to one. The lens holder 140 is driven to rotate by the second anti-shake coils 181 in cooperation with the driving magnetic assembly 150, so as to realize the optical anti-shake function. The magnitude and direction of the current flowing through the second anti-shake coil 181 at different positions can be set according to actual requirements, and are not particularly limited herein.
Illustratively, with continued reference to fig. 6, the second anti-shake bracket 182 is a frame structure, a corner of the second anti-shake bracket 182 is provided with a notch 183, a corner of the bottom cover 113 is provided with a connecting portion 114, and the connecting portion 114 is connected to the elastic member 120 located below through the notch 183.
Based on the above, the magnetic assembly 150 and the lens holder 140 are driven to move in the direction perpendicular to the axis 201 of the lens holder 140 and deflect relative to the axis 201 by the cooperation of the first anti-shake coil 171, the second anti-shake coil 181, the magnet 152 and the at least one elastic member 120, so as to realize the optical anti-shake function.
In some embodiments, with continued reference to fig. 3, the driving module further includes a hall element 190, the hall element 190 is assembled on the inner wall of the housing assembly 110, and the hall element 190 is opposite to the magnetic assembly 150. Illustratively, the hall element 190 is assembled to an inner wall of the bottom cover 113. The hall element 190 is used for sensing a change in a magnetic field of the magnetic assembly 150, and the control element determines a position of the magnet 152 through the change in the magnetic field sensed by the hall element 190, and adjusts a magnitude and a direction of current input to the auto-focusing coil 160, the first anti-shake coil 171, and the second anti-shake coil 181 according to the position of the magnet 152, thereby implementing a precise auto-focusing function and an optical anti-shake function. In some embodiments, with continued reference to fig. 3 or 6, the bottom cover 113 is provided with a plurality of electrical connections 115, the plurality of electrical connections 115 can be connected to a circuit board, and the control element can be provided on the circuit board. The autofocus coil 160, the first anti-shake coil 171, and the second anti-shake coil 181 may be connected to the electrical connection portion 115 of the bottom cover 113 through the elastic member 120 or other traces.
In summary, the driving module, the image capturing apparatus and the electronic device provided in the embodiment of the disclosure are based on the first elastic connecting body 124 connected between the inner frame 121 and the middle frame 122, and the second elastic connecting body 125 connected between the middle frame 122 and the outer frame 123, so that the inner frame 121, the middle frame 122, the outer frame 123, the first elastic connecting body 124 and the second elastic connecting body 125 form the elastic element 120 with an integrated structure, and the elastic element 120 has more stretching directions, which is beneficial to reducing the number of structural components of the driving module. Therefore, the lens holder 140 and the inner frame 121 of the elastic member 120 are conveniently connected, the magnetic assembly 150 and the middle frame 122 of the elastic member 120 are conveniently connected, and the reduction of the production cost of the driving module and the realization of mass production are facilitated. The auto-focus coil 160 and the first anti-shake coil 171 are both arranged opposite to the magnet 152, that is, the auto-focus coil 160, the magnetic assembly 150 and the first anti-shake coil 171 are nested from inside to outside, so that the auto-focus coil 160 and the first anti-shake coil 171 share the magnetic assembly 150, the number of the magnets 152 can be reduced, the assembly of the driving module is facilitated, the size of the driving module (the height of the driving module) along the axis 201 direction of the lens holder 140 is reduced, and the high integration of the camera and the electronic device is facilitated. In addition, by the cooperation of the first anti-shake coil 171 and the second anti-shake coil 181, the magnetic assembly 150 and the lens holder 140 can be translated in the second direction (any direction in the x1y1o1 plane or a direction perpendicular to the axis 201) and rotated around the fourth direction (any direction in the x2y2o2 plane or a direction perpendicular to the axis 201), so as to efficiently implement the optical anti-shake function.
The above embodiments of the present disclosure may be complementary to each other without conflict.
The above description is only exemplary of the present disclosure and should not be taken as limiting the disclosure, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
Claims (12)
1. The utility model provides a drive module which characterized in that for camera device, drive module includes:
at least one elastic member, the elastic member comprising at least one first elastic connecting body that stretches in a first direction and at least one second elastic connecting body that stretches in a second direction, the first direction and the second direction being different;
the lens bracket is connected with the first elastic connecting body; and
a magnetic assembly coupled between the first and second elastic connectors.
2. The driving module as claimed in claim 1, wherein the first elastic connecting body comprises a first elastic connecting portion extending and retracting along the first direction, and the first direction is parallel to the axial direction of the lens holder.
3. The driving module as claimed in claim 1, wherein the second elastic connecting body comprises a second elastic connecting portion extending and retracting along the second direction, and the second direction is perpendicular to the axial direction of the lens holder.
4. The driving module of claim 1, wherein the second elastic connecting body comprises a second elastic connecting portion extending and retracting along a third direction, the third direction is a rotation direction around a fourth direction, and the fourth direction is perpendicular to the axis of the lens holder.
5. The driving module according to any one of claims 1 to 4, wherein the driving module further comprises a housing assembly, the elastic member further comprises an inner frame, a middle frame and an outer frame, which are sequentially arranged from inside to outside, the first elastic connecting body is connected between the inner frame and the middle frame, the second elastic connecting body is connected between the middle frame and the outer frame, the inner frame is connected with the lens holder, the middle frame is connected with the magnetic assembly, and the outer frame is fixed in the housing assembly.
6. The drive module of claim 5, wherein the middle frame comprises a plurality of separately disposed middle frame portions, each of the middle frame portions being connected to the inner frame by the first elastic connector, each of the middle frame portions being further connected to the outer frame by the second elastic connector.
7. The drive module of claim 1, further comprising a housing assembly, wherein the magnetic assembly and the lens holder are disposed in the housing assembly, the magnetic assembly comprises a carrier and a plurality of magnets, the carrier is connected between the first elastic connector and the second elastic connector, and the plurality of magnets are disposed on the carrier.
8. The driving module according to claim 7, further comprising a first anti-shake coil assembled to a sidewall of the housing assembly, wherein an axis of the first anti-shake coil intersects with an axis of the lens holder, the first anti-shake coil is opposite to the magnet, and the first anti-shake coil is configured to drive the magnet to move in a second direction perpendicular to the axis of the lens holder.
9. The driving module according to claim 7 or 8, further comprising a second anti-shake coil assembled on an inner wall of the housing assembly, wherein an axis of the second anti-shake coil is parallel to an axis of the lens holder, the second anti-shake coil is opposite to the magnet, the second anti-shake coil is configured to drive the magnet to move along a third direction, the third direction is a rotation direction around a fourth direction, and the fourth direction is perpendicular to the axis of the lens holder.
10. The driving module according to claim 7 or 8, further comprising an auto-focus coil assembled to the lens holder, wherein an axis of the auto-focus coil is parallel to an axis of the lens holder, the auto-focus coil is opposite to the magnet, and the auto-focus coil is configured to drive the lens holder to move along a first direction, and the first direction is parallel to an axial direction of the lens holder.
11. An image pickup apparatus comprising the drive module according to any one of claims 1 to 10.
12. An electronic apparatus characterized by comprising the image pickup device according to claim 11.
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| CN202010928449.XA CN114157800B (en) | 2020-09-07 | 2020-09-07 | Driving module, camera device and electronic equipment |
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| CN202010928449.XA CN114157800B (en) | 2020-09-07 | 2020-09-07 | Driving module, camera device and electronic equipment |
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| CN114157800B CN114157800B (en) | 2024-02-13 |
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| CN114157800B (en) | 2024-02-13 |
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