WO2022120596A1 - Moteur à bobine acoustique, module de caméra et dispositif électronique - Google Patents

Moteur à bobine acoustique, module de caméra et dispositif électronique Download PDF

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Publication number
WO2022120596A1
WO2022120596A1 PCT/CN2020/134661 CN2020134661W WO2022120596A1 WO 2022120596 A1 WO2022120596 A1 WO 2022120596A1 CN 2020134661 W CN2020134661 W CN 2020134661W WO 2022120596 A1 WO2022120596 A1 WO 2022120596A1
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WO
WIPO (PCT)
Prior art keywords
dustproof film
cover
voice coil
coil motor
film
Prior art date
Application number
PCT/CN2020/134661
Other languages
English (en)
Chinese (zh)
Inventor
马忠科
陈小凤
姜鸿昌
Original Assignee
欧菲光集团股份有限公司
南昌欧菲光电技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 欧菲光集团股份有限公司, 南昌欧菲光电技术有限公司 filed Critical 欧菲光集团股份有限公司
Priority to PCT/CN2020/134661 priority Critical patent/WO2022120596A1/fr
Publication of WO2022120596A1 publication Critical patent/WO2022120596A1/fr

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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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/18—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets

Definitions

  • the present application relates to the technical field of cameras, and in particular, to a voice coil motor, a camera module and an electronic device.
  • the camera autofocus module uses a voice coil motor to drive the movement of the lens to achieve focusing.
  • the bottom of the voice coil motor is a non-sealed structure, and external dust or debris will pass through the internal structure of the voice coil motor from above and fall to the bottom of the voice coil motor.
  • the internal mechanisms of the voice coil motor mainly the frictional impact between the anti-twist groove on the upper cover of the voice coil motor and the coil seat, and the column on the coil seat.
  • the frictional impact with the lower cover and the frictional impact between the post on the coil seat and the reed will generate debris after the frictional impact. These debris will fall to the filter through the inside of the voice coil motor, thus affecting the camera mode. group imaging quality.
  • An embodiment of the present application provides a voice coil motor, including:
  • the coil holder has a first end, a second end, and a light-passing hole for accommodating the lens.
  • the first end of the coil holder has an upper surface
  • the second end of the coil holder has a lower surface and an outer side surface.
  • the light-passing holes penetrate through the upper surface of the first end of the coil base and the lower surface of the second end of the coil base respectively, so as to form an inner side surface at the second end of the coil base;
  • a first cover located at the first end of the coil holder
  • a second cover disposed at the second end of the coil base, and detachably connected to the first cover
  • a dust-proof film is arranged between at least one of the lower surface, the outer side surface and the inner side surface of the second end of the coil base and the first cover body, or the dust-proof film is arranged on the between at least one of the lower surface, outer side surface and inner side surface of the second end of the coil holder and the second cover, or the dust-proof film is provided on the lower surface of the second end of the coil holder, between at least one of the outer side surface and the inner side surface and the second reed to prevent foreign objects from falling to the filter surface on the side of the voice coil motor.
  • the voice coil motor passes between at least one of the lower surface, outer side surface and inner side surface of the second end of the coil holder and the first cover, and at least one of the lower surface, outer side surface and inner side surface of the second end of the coil holder.
  • a dust-proof film is arranged between the one and the second cover or between at least one of the lower surface, the outer side and the inner side of the second end of the coil base and the second spring, which can prevent foreign matter from passing through the coil base and the first cover
  • the gap between the body, the gap between the coil seat and the second cover, or the gap between the coil seat and the second reed falls to the filter surface on the side of the voice coil motor, reducing the movement of the voice coil motor.
  • the dust contamination on the filter surface caused by the filter can improve the imaging quality.
  • the dustproof film has a first abutment end and a second abutment end, and the first abutment end of the dustproof film is closely attached to the lower surface of the second end of the coil base, In at least one of the outer side surface and the inner side surface, the second abutting end of the dustproof film is closely attached to the first cover body, the second cover body or the second spring.
  • the second bonding end of the dustproof film is closely attached to the first cover body , the second cover body or the second spring leaf, improve the sealing between the coil seat and the first cover body, the second cover body or the second spring leaf, and prevent foreign objects from falling.
  • the dustproof film further has a non-fitting area connected between the first fitting end and the second fitting end, and the non-fitting area is provided with an exhaust structure.
  • the dustproof film has a first abutment end and a second abutment end, and the first abutment end of the dustproof film is closely attached to the lower surface of the second end of the coil base, In at least one of the outer side surface and the inner side surface, the second abutting end of the dustproof film is gap-fitted to the first cover, the second cover or the second spring; or the The first abutting end of the dust-proof film is gap-fitted on at least one of the lower surface, the outer side surface and the inner side surface of the second end of the coil base, and the second abutting end of the dust-proof film is closely bonded to the first cover, the second cover or the second spring.
  • the second bonding of the dustproof film is fitted or closely fitted to the first cover, the second cover or the second reed.
  • One fitting end of the dustproof film is closely fitted, and the other fitting end is fitted with a gap, avoiding the voice coil motor.
  • the internal air pressure is too high due to the inability to exhaust air, which affects the reliability of the voice coil motor.
  • the dust film gap is attached to at least one of a lower surface, an outer side surface and an inner side surface of the second end of the coil base, the first cover body, and the second cover body Or an abutting end of the second reed is made of rigid material.
  • a bonding end of the dustproof membrane is made of a rigid material, so as to maintain the shape of the bonding end without deforming it, which is beneficial to fit a bonding end of the dustproof membrane into the voice coil motor with a gap, so as to ensure the sound
  • the coil motor can be exhausted normally, and at the same time, the dustproof film can be stably set in the voice coil motor.
  • the dustproof film further has a non-adhering area connected between the first abutting end and the second abutting end, and the non-adhering area is provided with a dustproof glue.
  • the dustproof effect of the dustproof film can be improved by using the dustproof glue.
  • the dustproof film is one or a combination of flat, L-shaped, U-shaped, and I-shaped.
  • the dustproof film can be designed according to different dustproof grades to meet the requirements of different dustproof grades.
  • the thickness of the dustproof film ranges from 0.2 ⁇ m to 50 ⁇ m.
  • An embodiment of the present application also provides a camera module, which sequentially includes from the object side to the image side:
  • the voice coil motor as described above, wherein the voice coil motor is connected with the lens;
  • the above-mentioned camera module passes between at least one of the lower surface, outer side surface and inner side surface of the second end of the coil holder and the first cover, and at least one of the lower surface, outer side surface and inner side surface of the second end of the coil holder.
  • a dust-proof film is arranged between the one and the second cover or between at least one of the lower surface, the outer side and the inner side of the second end of the coil base and the second spring, which can prevent foreign matter from passing through the coil base and the first cover
  • the gap between the body, the gap between the coil seat and the second cover, or the gap between the coil seat and the second reed falls onto the filter, reducing the dust pollution on the filter caused by the movement of the voice coil motor , to improve the imaging quality of the camera module.
  • An embodiment of the present application also provides an electronic device, including:
  • the above camera module is arranged in the casing.
  • the above-mentioned electronic device passes between at least one of the lower surface, outer side surface and inner side surface of the second end of the coil holder and the first cover, and at least one of the lower surface, outer side surface and inner side surface of the second end of the coil holder.
  • a dust-proof film is arranged between the coil seat and the second cover or between at least one of the lower surface, outer side and inner side of the second end of the coil seat and the second spring, which can prevent foreign matter from passing through the coil seat and the first cover.
  • the gap between the coil seat and the second cover or the gap between the coil seat and the second reed falls onto the filter, reducing the dust pollution on the filter caused by the movement of the voice coil motor, Improve the imaging quality of electronic devices.
  • FIG. 1 is a schematic cross-sectional view of a camera module provided by a first embodiment of the present application.
  • FIG. 2 is a schematic diagram of an exploded structure of the voice coil motor provided by the first embodiment of the present application.
  • FIG. 3 is a schematic diagram showing the location of the dustproof film of the voice coil motor provided by the first embodiment of the present application.
  • FIG. 4 is a schematic plan view of the dustproof film of the voice coil motor provided by the first embodiment of the present application.
  • FIG. 5 is a schematic diagram showing the location of the dustproof film of the voice coil motor provided by the second embodiment of the present application.
  • FIG. 6 is a schematic diagram showing the location of the dustproof film of the voice coil motor provided by the third embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a dustproof membrane of a voice coil motor provided by a third embodiment of the present application.
  • FIG. 8 is a schematic diagram showing the arrangement position of the dustproof film of the voice coil motor according to the fourth embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a dustproof film of a voice coil motor provided by a fourth embodiment of the present application.
  • FIG. 10 is a schematic diagram showing the location of the dustproof film of the voice coil motor provided by the fifth embodiment of the present application.
  • FIG. 11 is a schematic diagram showing the location of the dustproof film of the voice coil motor provided by the sixth embodiment of the present application.
  • FIG. 12 is a schematic diagram showing the arrangement position of the dustproof film of the voice coil motor provided by the seventh embodiment of the present application.
  • FIG. 13 is a schematic diagram showing the location of the dustproof film of the voice coil motor provided by the eighth embodiment of the present application.
  • FIG. 14 is a schematic diagram showing the arrangement position of the dustproof film of the voice coil motor provided by the ninth embodiment of the present application.
  • FIG. 15 is a schematic structural diagram of the dustproof film provided by the tenth embodiment of the present application.
  • FIG. 16 is a schematic structural diagram of the dustproof film provided by the eleventh embodiment of the present application.
  • FIG. 17 is a schematic structural diagram of the dustproof film provided by the twelfth embodiment of the present application.
  • FIG. 18 is a schematic structural diagram of the dustproof film provided by the thirteenth embodiment of the present application.
  • FIG. 19 is a schematic perspective view of the structure of the electronic device provided by the fourteenth embodiment of the present application.
  • Dust film 16 116, 216, 316, 416
  • first and second are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, features defined as “first”, “second” may expressly or implicitly include one or more of said features. In the description of the present application, “plurality” means two or more, unless otherwise expressly and specifically defined.
  • the terms “installed”, “connected” and “connected” should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; it can be a mechanical connection, an electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction of two elements relation.
  • installed should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; it can be a mechanical connection, an electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction of two elements relation.
  • the first embodiment of the present application provides a voice coil motor 100.
  • the voice coil motor 100 at least includes a coil base 11, a first cover 12, a first reed 13, a second cover 14, a second Reed 15.
  • the coil holder 11 has a first end 111, a second end 112, and a light-passing hole 113 for receiving a lens (not shown).
  • the first end 111 of the coil holder 11 has an upper surface, and the coil
  • the second end 112 of the base 11 has a lower surface and an outer side.
  • the light-passing holes 113 respectively penetrate through the upper surface of the first end 111 of the coil base 11 and the lower surface of the second end 112 of the coil base
  • the second end 112 forms the inner side surface;
  • the first cover 12 is arranged on the first end 111 of the coil base 11 ;
  • the first spring 13 is arranged between the first cover 12 and the first end 111 of the coil base 11 ;
  • the second The cover 14 is disposed on the second end 112 of the coil base 11 and is detachably connected to the first cover 12 ;
  • the second spring 15 is disposed between the second cover 14 and the second end 112 of the coil base 11 .
  • the voice coil motor 100 further includes a dustproof film 16 , and the dustproof film 16 is disposed on at least one of the lower surface, the outer side surface and the inner side surface of the second end 112 of the coil base 11 and the first cover Between the body 12 , at least one of the lower surface, outer side and inner side of the second end 112 of the coil holder and the second cover 14 or between the lower surface, outer side and inner side of the second end 112 of the coil holder 11 between at least one of the side surfaces and the second reed 15 to prevent foreign objects from falling to the filter surface on the side of the voice coil motor 100 .
  • the voice coil motor 100 passes between at least one of the lower surface, the outer side surface and the inner side surface of the second end 112 of the coil holder 11 and the first cover 12 , the lower surface of the second end 112 of the coil holder 11 , Between at least one of the outer side and inner side and the second cover 14 or between at least one of the lower surface, outer side and inner side of the second end 112 of the coil holder 11 and the second spring 15 .
  • the dust film 16 can prevent foreign matter from falling through the gap between the coil seat 11 and the first cover 12 , the gap between the coil seat 11 and the second cover 14 or the gap between the coil seat 11 and the second spring 15
  • the surface of the optical filter 20 falling to the side of the voice coil motor 100 reduces the dust pollution on the surface of the optical filter 20 caused by the movement of the voice coil motor 100, and improves the image quality.
  • the above-mentioned foreign objects are objects that can affect the imaging and cause shadows when taking pictures.
  • the foreign objects can be external dirt, dust, or debris generated by friction and impact during the movement of the voice coil motor 100. etc.; the upper surface of the first end 111 of the coil holder 11 refers to the surface of the first end 111 facing away from the second end 112 in the direction of the optical axis, and the lower surface of the second end 112 of the coil holder 11 refers to the surface of the second end 112 along the optical axis
  • the axial direction faces away from the surface of the first end 111 .
  • the light-passing hole 113 of the coil holder 11 is roughly a round hole type, and the lens is connected to the light-passing hole 113 of the coil holder 11 by gluing or screwing.
  • the coil holder 11 can be moved under the action of the magnetic field.
  • the lens is driven to move along the optical axis, that is, the coil holder 11 and the lens move together toward the first reed 13 or toward the second reed 15 , so as to realize the focusing of the camera module 200 .
  • the coil holder 11 includes a main body 114 and a coil 115 .
  • the first end 111 , the second end 112 and the light-passing hole 113 of the coil holder 11 are also the first end 111 , the second end 112 and the light-passing hole of the main body 114 .
  • the hole 113 and the coil 115 are wound on the outer side of the main body 114 , and the coil 115 can drive the main body 114 and the lens in the main body 114 to move along the optical axis direction together after the coil 115 is energized.
  • the first cover body 12 includes a first stopper portion 122 , a first extension portion 124 and a first escape hole 126 .
  • the first stopper portion 122 is provided at the first end 112 of the coil holder 11 , and the first extension One end of the portion 124 is connected to the first stopper portion 122 , the opposite end of the first extension portion 124 extends toward the second end 112 of the main body 114 , the first escape hole 126 is provided in the first stopper portion 122 , and the first The avoidance hole 126 is disposed opposite to the light-transmitting hole 113 .
  • the second cover body 14 includes a second stopper portion 142 , a second extension portion 144 and a second avoidance hole 146 .
  • the second stopper portion 142 is provided at the second end 112 of the main body 114 , and one end of the second extension portion 144 is connected to the first The two stopper portions 142 are connected. The opposite end of the second extension portion 142 extends toward the first end 111 of the main body 114 .
  • the second avoidance hole 146 is provided in the second stopper portion 142 , and the second avoidance hole 146 is connected to the light-transmitting hole 146 .
  • the holes 113 are oppositely arranged. Through the first avoidance hole 126 and the second avoidance hole 146 , the coil holder 11 and the lens will not interfere with the first cover body 12 and the second cover body 14 during movement.
  • the opposite end of the first extension portion 122 extends toward the second end 112 of the body 114 to the second stopper portion 142 , and the opposite end of the second extension portion 142 faces the first end 111 of the body 114 .
  • Extending to the first stopper portion 122 , the first cover body 12 and the second cover body 14 are connected in a snap-fit manner. Therefore, the coil holder 11 is located in the area enclosed by the first stopper portion 122 , the first extension portion 124 , the second stopper portion 142 and the second extension portion 144 .
  • the number of the first extension parts 124 is four, which are evenly spaced along the circumferential direction of the first stopper part 122 , and the opposite ends of the four first extension parts 124 are all facing the second end of the main body 114 .
  • 112 extends to the second stopper portion 142
  • the number of the second extension portion 144 is two, and is disposed on opposite sides of the second stopper portion 142, and the opposite other ends of the two second extension portions 144 are facing
  • the first end 111 of the body 114 extends to the first stopper portion 122
  • the second extension portion 144 is located between two adjacent first extension portions 124 .
  • the number of the first extension portion 124 and the second extension portion 144 may be determined according to actual conditions.
  • the first reed 13 and the second reed 15 are both elastic gaskets.
  • the coil holder 11 moves along the optical axis, that is, moves toward the first reed 13 or toward the second reed 15 , the first reed 13 Or the second reed 15 is deformed under the pressing action of the coil base 11, and at the same time an elastic force is generated. return to its natural position.
  • the coil base 11 moves relative to the first cover body 12 and the second cover body 14 in the voice coil motor 100, the coil base 11 and the first cover body 12, between the coil base 11 and the second cover body 14 or the coil
  • the seat 11 and the second reed 15 are all non-sealed structures. Therefore, between the second end 112 of the main body 114 and the first cover 12 , between the second end 112 of the main body 114 and the second cover 14 or the main body 114 There is a gap between the second end 112 of the main body 112 and the second spring 15, and there is a risk of foreign objects falling out of the gap.
  • the dustproof film 16 needs to be connected to the second end 112 of the main body 114.
  • the dustproof film 16 has ductility, which is beneficial to improve the dustproof effect between the main body 114 and the first cover 12 , between the main body 114 and the second cover 14 or between the main body 114 and the second spring 15 . Avoid affecting the movement of the coil base 11 .
  • the thickness of the dustproof film 16 is in the range of 0.2 ⁇ m to 50 ⁇ m.
  • the dustproof film 16 is guaranteed to have a certain strength, and on the other hand, the dustproof film 16 is reduced.
  • the space occupied in the voice coil motor 100 does not increase the volume of the voice coil motor 100 .
  • the thickness of the dustproof film 16 is less than 0.2 ⁇ m, the strength of the dustproof film 16 is small, and it is easily damaged during the movement of the voice coil motor 100, which affects the dustproof effect of the voice coil motor 100; when the thickness of the dustproof film 16 is When the thickness is larger than 50 ⁇ m, the thickness of the dustproof film 16 increases significantly, and the internal space of the voice coil motor 100 occupied by the dust film 16 increases, which is not conducive to the miniaturization and thinning of the voice coil motor 100 .
  • the dustproof film 16 also has toughness, elasticity, fatigue resistance, impact resistance and weather resistance, etc.
  • the dustproof film 16 can be made of plastic, metal or other materials, wherein the plastic material Including but not limited to polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyetherimide (PEI), polyimide (PI), industrial liquid crystal polymers ( LCP), polyetheretherketone (PEEK), polycarbonate (PC), polyphenylene sulfide (PPS), polyamide (PA); metal materials include but are not limited to aluminum alloys, titanium alloys, beryllium alloys; other materials Including but not limited to biofilms.
  • PET polyethylene terephthalate
  • PEN polyethylene naphthalate
  • PEI polyetherimide
  • PI polyimide
  • LCP polyetheretherketone
  • PC polycarbonate
  • PPS polyphenylene sulfide
  • PA polyamide
  • metal materials include but are not limited to aluminum alloys, titanium alloys, be
  • suspension wires may be provided on the dustproof film 16 to enhance the strength of the dustproof film 16 .
  • the voice coil motor 100 further includes a magnet 17 , a shielding cover 18 and a circuit board 19 .
  • the magnet 17 is disposed between the first cover 12 and the second cover 14, and is disposed opposite to the coil 115, and the shield 18 is disposed on the side of the first stopper 122 away from the first spring 13 to shield the Electromagnetic radiation from the outside and inside the voice coil motor 100, the circuit board 19 is arranged on the outside of the first cover 12 and/or the second cover 14, and the circuit board 19 is electrically connected to the coil 115 for providing electrical signals to the coil 115, And the circuit board 19 is connected to an external signal source.
  • the voice coil motor 100 includes two magnets 17 , and the two magnets 17 are disposed opposite to each other and respectively disposed between two adjacent first extending portions 124 .
  • the dustproof film 16 of this embodiment has a first abutment end 162 and a second abutment end 163 , and the first abutment end 162 of the dustproof film 16 is closely attached to the second end 112 of the main body 114 At least one of the lower surface, the outer side surface and the inner side surface of the dustproof film 16, the second abutting end 163 of the dustproof film 16 is closely attached to the first extension portion 124 of the first cover 12 close to the second end 112 of the main body 114 On one side, in this way, the dustproof film 16 prevents foreign objects from falling to the surface of the filter 20 on the side of the voice coil motor 100 through the gap between the main body 114 and the first cover 12 .
  • tightly attached to/tightly attached/tightly arranged means that the two are fixedly connected, and there is no gap for gas circulation between the two, which can be glued or other fixing methods;
  • Fitting/gap fitting/gap setting means that the two are only in contact, and there is at least a gap through which gas can flow.
  • the fitting end refers to the area where the dustproof film 16 is closely fitted with the main body 114 , the first cover 12 , the second cover 14 or the second spring 15 or is fitted with a gap, which can also be called a fitting area;
  • the area of the dustproof film 16 excluding the bonding end/bonding area is the non-bonding area 164/non-bonding area, and the non-bonding area 164/non-bonding area is connected to the two bonding ends between.
  • the first abutting end 162 of the dustproof film 16 may be closely attached to the lower surface, inner side or outer side of the second end 112 of the main body 114, or may be one of the inner, outer and lower surfaces.
  • the two or three are closely attached at the same time, and the second attachment end 163 of the dustproof film 16 can be closely attached to the lower part of the side of the first extension 124 of the first cover 12 close to the second end 112 of the main body 114 .
  • the dustproof film 16 includes an exhaust structure 161 , and the exhaust structure 161 is disposed in the non-bonding area 164 of the dustproof film 16 , and the non-bonding area 164 is connected between the first attaching end 162 and the second attaching end 163 .
  • the shape of the dustproof film 16 is substantially flat, that is, the first abutment end 162 and the second abutment end 163 of the dustproof film 16 are respectively closely attached to the coil base 11 .
  • the shape of the dustproof film 16 can also be roughly L-shaped. Specifically, the first abutting end 162 of the dustproof film 16 is closely abutted to the second end 112 of the coil base 11 . On the inner side or the outer side, the second abutting end 163 of the dustproof film 16 is closely attached to the lower surface of the first cover 12; On the inner side of the cover body 12 , the second abutting end 163 of the dustproof film 16 is closely attached to the lower surface of the second end 112 of the coil base 11 .
  • the shape of the dustproof film 16 may also be roughly U-shaped. Specifically, the first abutting end 162 of the dustproof film 16 is closely abutted to the second end 112 of the coil base 11 . On the inner side or the outer side, the second abutting end 163 of the dustproof film 16 is closely attached to the inner side of the first cover body 12 .
  • the shape of the dustproof film 16 can also be roughly a mixed type of L-shape and U-shape.
  • the first abutting end 162 of the coil seat 11 closely adheres to the inner side, outer side and lower surface of the second end 112 of the coil base 11 at the same time; when the second abutting end 163 is L-shaped, the first The two abutting ends 163 are closely attached to the inner side surface of the first cover body 12 .
  • first abutting end 162 and the second abutting end 163 of the dustproof film 16 refer to the dustproofing end 162 connected to the main body 114 , the first cover 12 , the second cover 14 or the second spring 15 .
  • the shape of the dustproof film 16 refers to the cross-sectional pattern of the dustproof film 16 along the optical axis direction, and the plan view (front view) of the dustproof film 16 along the optical axis direction is substantially annular.
  • an exhaust structure 161 is provided on the non-adhering area 164 of the dustproof film 16, and both ends of the dustproof film 16, the coil seat 11 and the first cover 12 are in a fully closed state.
  • the exhaust structure is used. 161 for exhaust.
  • the exhaust structure 161 is an air escape hole, and the air escape hole is arranged in the non-adhering area of the dustproof film 16 , and the size of the air escape hole is smaller than the size of the pixel of the camera module.
  • the exhaust structure 161 may also have other shapes.
  • the non-adhering area 164 of the dustproof film 16 may be configured as a longitudinal turbine shape, an annular structure, or a non-annular structure with high light transmittance in the middle portion.
  • the dust-proof membrane 16 can also be made of a material that is breathable and waterproof.
  • the structure of the voice coil motor provided by the second embodiment of the present application is substantially the same as that of the voice coil motor 100 provided by the first embodiment.
  • the voice coil motor 100 in the first embodiment is still used as an example.
  • the difference is that: in this embodiment, the first abutting end 1162 of the dustproof film 116 is closely attached to at least one of the lower surface, the outer side surface and the inner side surface of the second end 112 of the coil base 11, preventing the The second abutting end 1163 of the dust film 116 is closely attached to the second reed 15, so that the dust film 116 prevents foreign objects from falling to the voice coil motor 100 through the gap between the coil base 11 and the second reed 15. side of the filter 20 surface.
  • the first abutting end 1162 of the dust-proof film 116 may be closely attached to the lower surface, inner side or outer side of the second end 112 of the coil base 11, or may be among the inner, outer and lower sides. Two or three of the two or three are attached at the same time, the second attaching end 1163 of the dustproof film 116 can be closely attached to the lower surface or the upper surface of the second spring 15, and the dustproof membrane 116 is reserved for the coil seat 11.
  • the dustproof film 116 avoids the posts on the coil base 11 for close contact.
  • the shape of the dustproof film 116 is substantially flat, that is, the first abutting end 1162 and the second abutting end 1163 of the dustproof film 116 are respectively closely attached to the lower part of the second end 112 of the coil base 11 . surface and the lower surface of the second reed 15 .
  • the shape of the dustproof film 116 may also be approximately L-shaped. Specifically, the first abutting end 1162 of the dustproof film 116 is closely abutted to the second end 112 of the coil base 11 . On the inner side or the outer side, the second abutting end 1163 of the dustproof film 116 is closely attached to the lower surface or the upper surface of the second spring 15 .
  • the shape of the dustproof film 116 can also be roughly a mixed shape of a plane shape and a U shape.
  • the first abutting end 1162 of the coil seat 11 closely adheres to the inner, outer and lower surfaces of the second end 112 of the coil base 11; when the second abutting end 1163 is flat, the second The fitting end 1163 is closely fitted on the lower surface or the upper surface of the second spring 15 .
  • the shape of the dustproof film 116 can also be roughly I-shaped. Specifically, the first abutting end 1162 of the dustproof film 116 is closely abutted to the second end 112 of the coil base 11 . The lower surface of the dust-proof film 116 is closely attached to the upper surface of the second spring 15 .
  • the dustproof film 116 in this embodiment is also provided with an exhaust structure 161 .
  • the structure of the voice coil motor provided by the third embodiment of the present application is substantially the same as that of the voice coil motor 100 provided by the first embodiment.
  • the voice coil motor 100 in the first embodiment is still used as an example Note that the difference is that: in this embodiment, the first abutting end 2162 of the dustproof film 216 is closely attached to at least one of the lower surface, the outer side surface and the inner side surface of the second end 112 of the coil base 11, preventing the The second abutting end 2163 of the dust film 216 is closely attached to the second cover 14 , so that the dust film 216 prevents foreign objects from falling to the voice coil motor 100 through the gap between the coil base 11 and the second cover 14 . side of the filter 20 surface.
  • the first abutting end 2162 of the dust-proof film 216 may be closely attached to the lower surface, inner side or outer side of the second end 112 of the coil base 11, or may be between the inner side, outer side and lower side.
  • the second end 2163 of the dustproof film 216 can be closely attached to the second end 112 of the second cover 14 (the second stopper 142 ) close to the coil base 11 (hereinafter referred to as the upper surface of the second cover 14), the lower surface of the second cover 14 (the second stopper 142) or the second cover 14 (the second stopper 142) is close to the voice coil motor 100 is the inner side of the geometric center (hereinafter referred to as the inner side of the second cover 14).
  • the shape of the dustproof film 216 is approximately L-shaped, that is, the first abutting end 2162 of the dustproof film 216 is closely attached to the inner side of the second end 112 of the coil base 11 , preventing The second abutting end 2163 of the dust film 216 is closely attached to the upper surface of the second cover body 14 .
  • the shape of the dustproof film 216 can also be roughly U-shaped. Specifically, the first abutting end 2162 of the dustproof film 216 is closely abutted to the second end 112 of the coil base 11 . On the inner side or the outer side, the second abutting end 2163 of the dustproof film 216 is closely attached to the inner side of the second cover body 14 .
  • the shape of the dustproof film 216 can also be a mixed shape of a plane shape and a U shape. Specifically, the first abutting end 2162 of the dustproof film 216 is closely attached to the coil seat at the same time. The inner side, the lower plane and the outer side of the second end 112 of the 11 , the second abutting end 2163 of the dustproof film 216 is closely attached to the upper plane or the lower plane of the second cover 14 .
  • the shape of the dustproof film 216 can also be roughly I-shaped. Specifically, the first abutting end 2162 of the dustproof film 216 is closely abutted to the second end 112 of the coil base 11 . The lower surface of the dust-proof film 216 is closely attached to the upper surface of the second cover 14 .
  • the dustproof film 216 in this embodiment is also provided with an exhaust structure 161 .
  • the voice coil motor provided in the fourth embodiment of the present application has substantially the same structure as the voice coil motor 100 provided in the first embodiment, and the voice coil motor 100 in the first embodiment is still used as an example in this embodiment.
  • the difference is that: in this embodiment, the first abutting end 3162 of the dustproof film 316 is gap-fitted to at least one of the lower surface, the outer side surface and the inner side surface of the second end 112 of the coil base 11, preventing the The second abutting end 3163 of the dust film 316 is closely attached to the first cover 12 , so that the dust film 316 prevents foreign objects from falling to the voice coil motor 100 through the gap between the coil base 11 and the first cover 12 . side of the filter 20 surface.
  • the first abutting end 3162 of the dustproof film 316 may be gap-fitted on the lower surface, inner side or outer side of the second end 112 of the coil base 11, or may be between the inner side, outer side and lower surface.
  • the second attaching end 3163 of the dustproof film 316 can be closely attached to the lower surface or inner side of the first cover 12, and the first attaching end 3162 of the dustproof membrane 316 adopts It is made of rigid material to ensure that the first abutting end 3162 of the dustproof film 316 maintains a certain shape without being deformed.
  • the shape of the dustproof film 316 is roughly U-shaped, that is, the first abutting end 3162 of the dustproof film 316 is in clearance with the outer side surface of the second end 112 of the coil base 11 , preventing the The second abutting end 3163 of the dust film 316 is in close contact with the inner side surface of the first cover body 12 .
  • the shape of the dustproof film 316 can also be roughly L-shaped. Specifically, the first abutting end 3162 of the dustproof film 316 is gap-fitted with the second end 112 of the coil base 11 . On the inner side or the outer side, the second abutting end 3163 of the dustproof film 316 is closely attached to the lower surface of the first cover body 12; the first attaching end 3162 of the dustproof film 316 can also be closely attached to the coil seat. On the lower surface of the second end 112 of the 11 , the second abutting end 3163 of the dustproof film 316 is closely attached to the inner side of the first cover 12 .
  • the shape of the dustproof film 316 can also be roughly U-shaped. Specifically, the first abutting end 3162 of the dustproof film 316 is gap-fitted to the second end 112 of the coil base 11 . On the inner side, the second abutting end 3163 of the dustproof film 316 is closely attached to the inner side of the first cover 12 .
  • the shape of the dustproof film 316 can also be roughly a mixed type of L-shape and U-shape. Specifically, the first abutting end 3162 of the dustproof film 316 is abutted against the coil seat at the same time. The inner side, outer side and lower surface of the second end 112 of 11 , the second abutting end 3163 of the dustproof film 316 is closely attached to the lower surface of the first cover 12 .
  • the dustproof film 316 in this embodiment does not need to be provided with the exhaust structure 161 .
  • the structure of the voice coil motor provided by the fifth embodiment of the present application is substantially the same as that of the voice coil motor provided by the fourth embodiment.
  • This embodiment is still described by taking the voice coil motor 100 in the first embodiment as an example. , the difference is that: in this embodiment, the first abutting end 4162 of the dustproof film 416 is gap-fitted to at least one of the lower surface, the outer side surface and the inner side surface of the second end 112 of the coil base 11, preventing dust
  • the second abutting end 4163 of the membrane 416 is closely attached to the second reed 15, so that the dust-proof membrane 416 prevents foreign objects from falling to the side of the voice coil motor 100 through the gap between the coil base 11 and the second reed 15 the surface of the filter 20.
  • the first abutting end 4162 of the dust-proof film 416 may be gap-fitted to the lower surface, inner side or outer side of the second end 112 of the coil base 11, or may be between the inner side, outer side and lower side.
  • the second attaching end 4163 of the dustproof film 416 can be closely attached to the lower surface or the upper surface of the second spring 15, and the first attaching end 4162 of the dustproof membrane 416 adopts It is made of rigid material to ensure that the first fitting end 4162 of the dust-proof film 416 maintains a certain shape without being deformed.
  • the dust-proof film 416 is reserved with holes that allow the posts on the coil base 11 to pass through, which is convenient for the coil base 11 to pass through.
  • the post passes through the dustproof film 416 smoothly without interfering with the dustproof film 416 , or when the dustproof film 416 is in a gap fit, the dustproof film 416 avoids the post on the coil base 11 to abut.
  • the shape of the dustproof film 416 is approximately L-shaped.
  • the second abutting end 4163 of the second reed 15 is closely attached to the lower surface of the second spring 15 .
  • the shape of the dustproof film 416 may also be substantially planar, that is, the first abutting end 4162 of the dustproof film 416 is abutted against the lower surface of the second end 112 of the coil base 11 with a gap. , the second abutting end 4163 of the dustproof film 416 is closely attached to the lower surface or the upper surface of the lower spring 15 .
  • the shape of the dustproof film 416 can also be roughly a hybrid shape of a plane shape and a U shape. Specifically, the first abutting end 4162 of the dustproof film 416 is abutted against the coil base at the same time. The inner side, outer side and lower surface of the second end 112 of 11 , and the second abutting end 4163 of the dustproof film 416 is closely attached to the lower or upper surface of the second spring 15 .
  • the shape of the dustproof film 416 can also be roughly I-shaped. Specifically, the first abutting end 4162 of the dustproof film 416 is gap-fitted to the second end 112 of the coil base 11 . The lower surface of the dust-proof film 416 is closely attached to the upper surface of the second spring 15 .
  • the voice coil motor provided by the sixth embodiment of the present application has substantially the same structure as the voice coil motor provided by the fourth embodiment, and the voice coil motor 100 in the first embodiment is still used as an example for description in this embodiment. , the difference is that: in this embodiment, the first abutting end 5162 of the dustproof film 516 is gap-fitted to at least one of the lower surface, the outer side surface and the inner side surface of the second end 112 of the coil base 11, preventing dust The second abutting end 5163 of the membrane 516 is closely attached to the second cover 14, so that the dustproof membrane 516 prevents foreign objects from falling to the side of the voice coil motor 100 through the gap between the coil base 11 and the second cover 14 the surface of the filter 20.
  • the first abutting end 5162 of the dustproof film 516 may be gap-fitted to the lower surface, inner side or outer side of the second end 112 of the coil base 11, or may be between the inner side, outer side and lower side. Two or three of the two or three are attached at the same time, the second attachment end 5163 of the dustproof film 516 can be closely attached to the upper surface, the lower surface or the inner side of the second cover 14, and the first attachment of the dustproof membrane 516
  • the end 5162 is made of rigid material to ensure that the first abutting end 5162 of the dustproof film 516 maintains a certain shape without deformation.
  • the shape of the dustproof film 516 is approximately L-shaped, that is, the first abutting end 5162 of the dustproof film 516 is abutted against the inner side of the second end 112 of the coil base 11 with a gap, and the second end 5162 of the dustproof film 516
  • the two abutting ends 5163 are closely attached to the upper surface of the second cover body 14 .
  • the shape of the dustproof film 516 can also be roughly U-shaped. Specifically, the first abutting end 5162 of the dustproof film 516 is gap-fitted to the second end 112 of the coil base 11 . On the inner side or the outer side, the second abutting end 5163 of the dustproof film 516 is closely attached to the inner side of the second cover body 14 .
  • the shape of the dustproof film 516 can also be roughly a mixed shape of a plane shape and a U shape. Specifically, the first abutting end 5162 of the dustproof film 516 is abutted against the coil seat at the same time. The inner side, the lower plane and the outer side of the second end 112 of the 11 , the second abutting end 5163 of the dustproof film 516 is closely attached to the upper plane or the lower plane of the second cover 14 .
  • the shape of the dustproof film 516 can also be roughly I-shaped. Specifically, the first abutting end 5162 of the dustproof film 516 is gap-fitted to the second end 112 of the coil base 11 . The lower surface of the dust-proof film 516 is closely attached to the upper surface of the second cover 14 .
  • the voice coil motor provided by the seventh embodiment of the present application has substantially the same structure as the voice coil motor provided by the fourth embodiment, and the voice coil motor 100 in the first embodiment is still used as an example for description in this embodiment.
  • the difference is: in this embodiment, the first abutting end 6162 of the dustproof film 616 is closely attached to at least one of the lower surface, the outer side surface and the inner side surface of the second end 112 of the coil base 11, preventing dust
  • the second abutting end 6163 of the film 616 is abutted against the first cover 12 with a gap, so that the dustproof film 616 prevents foreign objects from falling to the side of the voice coil motor 100 through the gap between the coil base 11 and the first cover 12 the surface of the filter 20.
  • the first abutting end 6162 of the dust-proof film 616 may be closely attached to the lower surface, inner side or outer side of the second end 112 of the coil base 11, or may be among the inner, outer and lower surfaces. Two or three of the two or three are attached at the same time, the second attaching end 6163 of the dustproof film 616 can be attached to the lower surface or inner side of the first cover 12 with a gap, and the second attaching end 6163 of the dustproof membrane 616 adopts It is made of rigid material to ensure that the second abutting end 6163 of the dustproof film 616 maintains a certain shape without being deformed.
  • the shape of the dustproof film 616 is approximately L-shaped, that is, the first abutting end 6162 of the dustproof film 616 is closely attached to the lower surface of the second end 112 of the coil base 11 , and the second end 6162 of the dustproof film 616 The two abutting ends 6163 are gap-fitted to the inner side surface of the first cover body 12 .
  • the shape of the dustproof film 616 can also be roughly U-shaped. Specifically, the first abutting end 6162 of the dustproof film 616 is closely abutted to the second end 112 of the coil base 11 . On the inner side or the outer side, the second abutting end 6163 of the dustproof film 616 is gap-fitted to the inner side of the first cover 12 .
  • the shape of the dustproof film 616 may also be substantially flat. Specifically, the first abutting end 6162 of the dustproof film 616 is closely abutted to the second end 112 of the coil base 11 . On the lower surface, the second abutting end 6163 of the dustproof film 616 is gap-fitted to the lower surface of the first cover body 12 .
  • the shape of the dustproof film 616 can also be roughly a mixed type of L-shape and U-shape.
  • the first abutting end 6162 of the dustproof film 616 is closely attached to the coil base 11 .
  • the second abutting end 6163 of the dustproof film 616 is gap-fitted to the inner side of the first cover 12.
  • the voice coil motor provided by the eighth embodiment of the present application has substantially the same structure as the voice coil motor provided by the seventh embodiment, and the voice coil motor 100 in the first embodiment is still used as an example for description in this embodiment. , the difference is: in this embodiment, the first abutting end 7162 of the dustproof film 716 is closely attached to at least one of the lower surface, the outer side surface and the inner side surface of the second end 112 of the coil base 11, preventing dust The second abutting end 7163 of the film 716 is abutted against the second reed 15 with a gap, so that the dustproof film 716 prevents foreign matter from falling to the side of the voice coil motor 100 through the gap between the coil base 11 and the second reed 15 the surface of the filter 20.
  • the first abutting end 7162 of the dust-proof film 716 may be closely attached to the lower surface, inner side or outer side of the second end 112 of the coil base 11, or may be between the inner side, outer side and lower side.
  • the second attaching end 7163 of the dustproof film 716 can be attached to the lower surface or the upper surface of the second spring 15 with a gap, and the second attaching end 7163 of the dustproof membrane 716 It is made of rigid material to ensure that the second abutting end 7163 of the dustproof film 716 maintains a certain shape without being deformed.
  • the dustproof film 716 has reserved holes for the posts on the coil base 11 to pass through, which is convenient for the coil base 11
  • the upper post passes through the dustproof film 716 smoothly without interfering with the dustproof film 716 , or when the dustproof film 716 is in close contact, the dustproof film 716 avoids the post on the coil base 11 for close contact.
  • the shape of the dustproof film 716 is substantially flat, that is, the first abutting end 7162 of the dustproof film 716 is closely attached to the lower surface of the second end 112 of the coil base 11 , and the second end 7162 of the dustproof film 716 The two abutting ends 7163 are gap-fitted to the lower surface of the second spring 15 .
  • the shape of the dustproof film 716 may also be approximately L-shaped. Specifically, the first abutting end 7162 of the dustproof film 716 is closely abutted to the second end 112 of the coil base 11 . On the inner side or outer side, the second abutting end 7163 of the dustproof film 716 is gap-fitted to the lower surface or the upper surface of the second reed 15 .
  • the shape of the dustproof film 716 can also be roughly a mixed shape of a plane shape and a U shape. Specifically, the first abutting end 7162 of the dustproof film 716 is closely attached to the coil seat at the same time. On the inner side, outer side and lower surface of the second end of 11 , the second abutting end 7163 of the dustproof film 716 is gap-fitted to the lower or upper surface of the second spring 15 .
  • the shape of the dustproof film 716 can also be roughly I-shaped. Specifically, the first abutting end 7162 of the dustproof film 716 is closely abutted to the second end 112 of the coil base 11 . The lower surface of the dust-proof film 716 is abutted on the upper surface of the second spring 15 with a gap.
  • the structure of the voice coil motor provided by the ninth embodiment of the present application is substantially the same as that of the voice coil motor provided by the seventh embodiment.
  • This embodiment is still described by taking the voice coil motor 100 in the first embodiment as an example. , the difference is: in this embodiment, the first abutting end 8162 of the dustproof film 816 is closely attached to at least one of the lower surface, the outer side surface and the inner side surface of the second end 112 of the coil base 11, preventing dust
  • the second abutting end 8163 of the film 816 is gap-fitted to the second cover 14, and the second abutting end 8163 of the dust-proof film 816 is made of a rigid material to ensure that the second abutting end 8163 of the dust-proof film 816 maintains a certain The shape is not deformed. In this way, the dustproof film 816 prevents foreign matter from falling onto the surface of the filter 20 on the voice coil motor 100 side through the gap between the coil base 11 and the second cover 14 .
  • the first abutting end 8162 of the dustproof film 816 may be closely attached to the lower surface, inner side or outer side of the second end 112 of the coil base 11, or the inner side, outer side and lower side may be simultaneously
  • the second bonding end 8163 of the dustproof film 816 can be bonded to the upper surface, the lower surface or the inner side surface of the second cover body 14 with a gap.
  • the shape of the dustproof film 816 is approximately L-shaped, that is, the first abutting end 8162 of the dustproof film 816 is closely attached to the inner side of the second end 112 of the coil base 11, and the second end 8162 of the dustproof film 816 The two abutting ends 8163 are gap-fitted to the lower surface of the second cover body 14 .
  • the shape of the dustproof film 816 can also be roughly U-shaped. Specifically, the first abutting end 8162 of the dustproof film 816 is closely attached to the second end 112 of the coil base 11 . On the inner side or the outer side, the second abutting end 8163 of the dustproof film 816 is gap-fitted to the inner side of the second cover 14 .
  • the shape of the dustproof film 816 can also be roughly a mixed shape of a plane shape and a U-shaped shape. Specifically, the first abutting end 8162 of the dustproof film 816 is closely attached to the coil base 11 at the same time. The inner side, the lower plane and the outer side of the second end 112 , and the second abutting end 8163 of the dustproof film 816 is gap-fitted to the upper plane or the lower plane of the second cover 14 .
  • the shape of the dustproof film 816 can also be roughly I-shaped. Specifically, the first abutting end 8162 of the dustproof film 816 is closely abutted to the second end 112 of the coil base 11 . The lower surface of the dust-proof film 816 is abutted on the upper surface of the second cover 14 with a gap between the second abutting end 8163 of the dust-proof film 816 .
  • the shape of the dustproof film 916 provided by the tenth embodiment of the present application is roughly I-shaped, which is suitable for the situation that the two fitting ends of the dustproof film are tightly attached to the voice coil motor, and the dustproof film 916 is not dustproof.
  • the non-bonding area of the film 916 is provided with an exhaust structure 9161, and the exhaust structure 9161 is an air escape hole.
  • the non-adhering area of the dustproof film 916 can be set to a transverse single wave (single wave crest or wave trough), multiple waves (multiple wave crests and wave troughs), tooth-like and other undulating shapes, so as to Prevent the dust film 916 from affecting the movement of the voice coil motor.
  • the exhaust structure 9161 can be correspondingly arranged at the peak, trough or non-peak and trough positions of the dustproof film 916 .
  • the shape of the dustproof film 1016 provided by the eleventh embodiment of the present application is roughly flat, which is suitable for the situation that the two fitting ends of the dustproof film are tightly attached to the voice coil motor.
  • the structure 10161 is an air escape groove, and the air escape groove is provided in the non-bonding area of the dustproof film 1016 , and the shape of the air escape groove can be folded, wavy or multi-layer film spaced.
  • the shape of the dustproof film 1116 provided by the twelfth embodiment of the present application is roughly I-shaped, which is suitable for the situation that one of the abutting ends of the dustproof film is fitted in the voice coil motor with a gap, and the dustproof film is not dustproof.
  • the non-conforming regions of the film 1116 have multiple peaks and valleys.
  • a dustproof glue 165 is provided at the trough of the dustproof film 1116 , and dust can be further adhered by the dustproof glue 165 to enhance the dustproof effect of the dustproof film 1116 .
  • the shape of the dustproof film 1216 provided by the thirteenth embodiment of the present application is roughly a multi-layer I-shaped, that is, the dustproof film 1216 in this embodiment is composed of two I-shaped films, and the strength is Higher and better dustproof effect.
  • the first embodiment of the present application further provides a camera module 200 , which at least includes a voice coil motor 100 , a lens, a filter 20 , a photosensitive chip 30 , a circuit board 40 , a filter holder 50 and a package Body 60.
  • the voice coil motor 100 in this embodiment may also be any one of the voice coil motors in the second embodiment to the ninth embodiment.
  • the lens is connected to the voice coil motor 100 , the filter 20 is disposed on one side of the voice coil motor 100 , the photosensitive chip 30 is disposed on the side of the filter 20 away from the voice coil motor 100 , and the circuit board 40 is disposed on the photosensitive chip 30 away from the filter 20
  • the filter 20 is arranged between the filter support 50 and the voice coil motor 100, the filter 20 is adhered to the side of the filter support 50 away from the photosensitive chip 30, and the filter support 50 is used to carry the filter 20,
  • the package body 60 is used to package the photosensitive chip 30 on the circuit board 40 .
  • the above-mentioned camera module 200 passes through at least one of the lower surface, the outer side surface and the inner side surface of the second end 112 of the coil holder 11 and the first cover 12 and the lower surface and the outer side surface of the second end 112 of the coil holder 11 .
  • a dustproof film 16 is arranged between at least one of the inner side and the second cover 14 or the lower surface, outer side and inner side of the second end 112 of the coil base 11 and at least one of the inner side and the second spring 15 , can prevent foreign objects from falling to the filter through the gap between the coil base 11 and the first cover 12 , the gap between the coil base 11 and the second cover 14 or the gap between the coil base 11 and the second reed 15
  • the surface of the film 20 can reduce the dust pollution on the filter 20 caused by the movement of the voice coil motor 100 and improve the imaging quality of the camera module 200 .
  • the lens plays an important role in the imaging effect.
  • the lens uses the refraction principle of the lens to make the light of the scene pass through the lens to form a clear image on the focal plane.
  • the filter 20 is an infrared cut-off filter, which is a filter for filtering infrared wavelengths, and can prevent infrared rays from passing through the lens of the camera module 200 to avoid image distortion.
  • the filter 20 can also be other types of filters.
  • the photosensitive chip 30 is also called an image photosensitive chip and a light sensor, and is used for converting an optical image into a digital signal.
  • the circuit board is a support body of each electronic component in the camera module 200 and a carrier for electrical connection.
  • the circuit board is electrically connected with the circuit board 19 to provide power for the voice coil motor 100 .
  • the structure of the above-mentioned camera module 200 does not constitute a limitation to the camera module 200, and the camera module 200 may include more or less components than the above, or combine some components, or split some components , or a different component arrangement.
  • the fourteenth embodiment of the present application provides an electronic device 300 , which at least includes a casing 70 and the camera module 200 in the first embodiment, and the camera module 200 is disposed in the casing.
  • the above-mentioned electronic device 300 communicates with the first cover 12 , the lower surface, the outer surface and the inner surface of the second end 112 of the coil holder 11 through at least one of the lower surface, the outer side surface and the inner side surface of the second end 112 of the coil holder 11 .
  • a dustproof film 16 is provided between at least one of the inner side surfaces and at least one of the lower surface, outer side surface and inner side surface of the second cover 14 or the second end 112 of the coil base 11 and the second spring 15, It can prevent foreign objects from falling to the filter through the gap between the coil base 11 and the first cover 12 , the gap between the coil base 11 and the second cover 14 or the gap between the coil base 11 and the second spring 15 20 , the dust pollution on the filter 20 caused by the movement of the voice coil motor 100 is reduced, and the imaging quality of the electronic device 300 is improved.
  • the above structure of the electronic device 300 does not constitute a limitation on the electronic device 300, and may include more or less components than the above, or combine some components, or split some components, or set different components .
  • the electronic device 300 in this embodiment is a mobile phone.
  • the electronic device 300 may also be a tablet computer, a notebook computer, a camera, or the like.

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Abstract

La présente invention concerne un moteur à bobine acoustique, un module de caméra et un dispositif électronique. Le moteur à bobine acoustique comprend une base de bobine, un premier corps de couvercle, une première lame vibrante, un second corps de couvercle, une seconde lame vibrante et un film anti-poussière. La base de bobine est pourvue d'une première extrémité, d'une seconde extrémité et d'un trou de passage de lumière utilisé pour recevoir une lentille, la première extrémité de la base de bobine étant pourvue d'une surface supérieure ; la seconde extrémité de la base de bobine est pourvue d'une surface inférieure et d'une surface latérale extérieure ; et le trou de passage de lumière pénètre respectivement dans la surface supérieure de la première extrémité de la base de bobine et la surface inférieure de la seconde extrémité de la base de bobine de façon à former une surface latérale intérieure au niveau de la seconde extrémité de la base de bobine. Le film anti-poussière est disposé entre la seconde extrémité de la base de bobine et le premier corps de couvercle, entre la seconde extrémité de la base de bobine et le second corps de couvercle, ou entre la seconde extrémité de la base de bobine et la seconde lame vibrante, de façon à empêcher un objet étranger de tomber sur une surface d'un filtre optique sur un côté du moteur à bobine acoustique. Le moteur à bobine acoustique peut réduire la pollution à la poussière fine provoquée pendant le déplacement du moteur à bobine acoustique, et améliorer la qualité d'imagerie.
PCT/CN2020/134661 2020-12-08 2020-12-08 Moteur à bobine acoustique, module de caméra et dispositif électronique WO2022120596A1 (fr)

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