Dustproof member, lens module and electronic device

Abstract

The application provides a dustproof piece, which comprises at least two dustproof subparts, the two dustproof subparts are connected in a head-to-tail mode to form a dustproof piece, each dustproof subpart comprises a subbottom plate and a dustproof side plate connected with the subbottom plate, each subbottom plate is provided with a notch, each dustproof side plate comprises an outwardly turned subplate and a complete set of subplates connected with the outwardly turned subplate, one end of the complete set of subplates away from the outwardly turned subplate is connected with the edge of the notch, and the outwardly turned subplate is arranged away from the notch; a plurality of subbottom plates are connected in a head-to-tail mode to form a bottom plate, a plurality of notches are communicated to form a first through hole, a plurality of complete sets of subplates are connected in a head-to-tail mode to form a sleeve part, the sleeve part has a second through hole, the second through hole is communicated with the first through hole, and a plurality of outwardly turned subplates are connected in a head-to-tail mode to form an outwardly turned part, the outwardly turned part is arranged away from the second through hole; a side of the outwardly turned part facing the bottom plate, a side of the sleeve part away from the second through hole and a side of the bottom plate facing the outwardly turned part are surrounded to form a dust collecting groove. The application also provides a lens module comprising the dustproof piece and an electronic device.

Description

Technical Field

[0001] This application relates to the field of electronic and optical devices, and more particularly to a dustproof component, a lens module including the dustproof component, and an electronic device including the lens module. Background Technology

[0002] Most mobile phone camera modules on the market consist of six main parts: a lens, a voice coil motor, a filter, a photosensitive chip, a plastic base, and a circuit board. The lens carrier within the voice coil motor needs to move relative to the outer casing, thus requiring a gap between them. Additionally, the lens and the voice coil motor's lens carrier are connected by threads, which may also create gaps. Dust particles from the environment can enter the camera module through these gaps, affecting image quality.

[0003] Existing technologies typically employ methods such as placing a dustproof film between the carrier and the housing, or setting a receiving groove on the plastic base and filling the receiving groove with dustproof adhesive. However, these methods do not fundamentally prevent dust from falling into the lens module, and their effectiveness is not sustainable. The dustproof film or dustproof adhesive needs to be replaced continuously, resulting in high costs. Summary of the Invention

[0004] In view of this, this application provides a dustproof component with good dustproof effect.

[0005] Additionally, it is necessary to provide a lens module that includes the dustproof component.

[0006] Additionally, it is necessary to provide an electronic device that includes the lens module.

[0007] One embodiment of this application provides a dustproof component, including at least two dustproof sub-parts, which are connected end-to-end to form the dustproof component.

[0008] Each of the dustproof sub-parts includes a sub-base plate and a dustproof side plate connected to the sub-base plate. Each sub-base plate is provided with a notch. Each dustproof side plate includes an outward-turning sub-plate and a set of sub-plates connected to the outward-turning sub-plate. The end of the set of sub-plates away from the outward-turning sub-plate is connected to the edge of the notch. The outward-turning sub-plate is disposed away from the notch.

[0009] Multiple sub-base plates are connected end to end to form a base plate, and multiple notches are connected to form a first through hole. Multiple bundled sub-plates are connected end to end to form a sleeve portion. The sleeve portion has a second through hole, which is connected to the first through hole. Multiple outward-turning sub-plates are connected end to end to form an outward-turning portion, which is disposed away from the second through hole.

[0010] The side of the outward-turned portion facing the bottom plate, the side of the sleeve portion away from the second through hole, and the side of the bottom plate facing the outward-turned portion are arranged to form a dust collection groove.

[0011] In some embodiments, the outward-turned portion is parallel to the base plate, and the side of the outward-turned portion facing away from the base plate is recessed to form a dustproof groove, and the dustproof groove is provided with dustproof adhesive.

[0012] In some embodiments, the diameter of the second through hole gradually decreases along the direction from near the base plate to away from the base plate.

[0013] In some embodiments, the at least two dustproof sub-parts are integrally formed to create the dustproof component.

[0014] One embodiment of this application provides a lens module, including a voice coil motor, the dustproof component, and a lens. The voice coil motor is provided with a receiving hole, and a portion of the lens is received in the receiving hole.

[0015] The dustproof component is disposed on one surface of the voice coil motor, the first through hole is disposed corresponding to the receiving hole, and the diameter of the first through hole is equal to or smaller than the diameter of the receiving hole.

[0016] In some embodiments, the lens module further includes a dustproof sheet disposed at the end of the lens away from the voice coil motor, and the dustproof component is located between the dustproof sheet and the voice coil motor.

[0017] In some embodiments, the dustproof sheet is annular, and the outer diameter of the dustproof sheet is larger than the diameter of the receiving hole.

[0018] In some embodiments, the lens includes a body and a dust cover, the dust cover being disposed at one end of the body away from the voice coil motor, a portion of the body being received in the receiving hole, and another portion of the body and the dust cover being exposed on a surface of the voice coil motor; the dustproof element is located between the dust cover and the voice coil motor.

[0019] In some embodiments, the dust cover is disc-shaped, and the diameter of the dust cover is larger than the diameter of the receiving hole.

[0020] In some embodiments, the lens module further includes a circuit board, a photosensitive chip, a carrier, and a filter. The photosensitive chip is disposed on one surface of the circuit board, the carrier is disposed on another surface of the circuit board and is on the same surface as the photosensitive chip, the voice coil motor is disposed on a surface of the carrier opposite to the circuit board, and the filter is disposed on the carrier and is positioned opposite to the photosensitive chip.

[0021] An embodiment of this application also provides an electronic device including the lens module.

[0022] Compared to existing technologies, the dustproof component provided in this application includes an outward-facing portion and a dust collection groove, which are disposed on one surface of the voice coil motor. This effectively prevents dust particles from entering the voice coil motor from above or the side, thus increasing the complexity of the path for dust particles to enter the lens module. This dustproof component has a simple structure, high practicality, and its application in lens modules can effectively reduce imaging defects caused by dust particles, and its continuous effect lasts for a long time. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of a lens module provided in an embodiment of this application.

[0024] Figure 2 yes Figure 1 The diagram shown is an exploded view of the lens module.

[0025] Figure 3 yes Figure 1 The diagram shows a three-dimensional structural schematic of some components of the lens module.

[0026] Figure 4 yes Figure 1 The diagram shows a cross-sectional view of the lens module along line IV-IV.

[0027] Figure 5 This is a three-dimensional structural diagram of a lens module provided in another embodiment of this application.

[0028] Figure 6 yes Figure 5 The diagram shows a three-dimensional structural schematic of some components of the lens module.

[0029] Figure 7 yes Figure 5 The diagram shows a cross-sectional view of the lens module along line VII-VII.

[0030] Figure 8 This is a three-dimensional structural schematic diagram of an electronic device provided in an embodiment of this application.

[0031] Explanation of main component symbols

[0032] Lens module 100, 200

[0033] Circuit Board 10

[0034] First hardboard section 101

[0035] Second rigid plate section 102

[0036] Flexible circuit board section 103

[0037] Electrical connector 11

[0038] First reinforcement plate 12

[0039] Second reinforcement plate 13

[0040] Image sensor 20

[0041] First adhesive layer 21

[0042] Support 30

[0043] First surface 301

[0044] Second surface 302

[0045] Third through hole 31

[0046] Groove 32

[0047] Second adhesive layer 33

[0048] Filter 40

[0049] Third adhesive layer 42

[0050] Voice coil motor 50

[0051] Reception Hole 52

[0052] Fourth adhesive layer 54

[0053] Dustproof parts 60

[0054] Base plate 601

[0055] First through hole 602

[0056] Dust cover 603

[0057] Sleeve part 6031

[0058] eversion part 6032

[0059] Second through hole 6033

[0060] Dustproof slot 604

[0061] Dust collection trough 605

[0062] Positioning hole 606

[0063] Dustproof Subsection 61

[0064] Sub-chassis 611

[0065] Gap 612

[0066] Dustproof side panel 613

[0067] Complete set of sub-boards 6131

[0068] Outward-facing panel 6132

[0069] Fifth adhesive layer 62

[0070] Lens 70

[0071] First lens section 701

[0072] Second lens section 702

[0073] Third lens section 703

[0074] Fourth lens section 704

[0075] Ontology 71

[0076] Dust cover 72

[0077] Sixth adhesive layer 73

[0078] Dustproof sheet 80

[0079] Electronic device 300

[0080] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0081] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0082] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "obliquely upper," "obliquely lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of the stated features.

[0083] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0084] To further illustrate the technical means and effects adopted by this application in achieving its intended purpose, the following detailed description of this application is provided in conjunction with the accompanying drawings and preferred embodiments.

[0085] Please see Figure 1 and Figure 2 This application provides a lens module 100, which includes a circuit board 10, a photosensitive chip 20, a carrier 30, a filter 40, a voice coil motor 50, a dustproof component 60, and a lens 70. The photosensitive chip 20 is disposed on one surface of the circuit board 10, and the carrier 30 is disposed on another surface of the circuit board 10, sharing the same surface as the photosensitive chip 20. The voice coil motor 50 is disposed on a surface of the carrier 30 opposite to the circuit board 10, and the filter 40 is disposed on the carrier 30, opposite to the position of the photosensitive chip 20. The dustproof component 60 is disposed on a surface of the voice coil motor 50 opposite to the carrier 30, and a portion of the lens 70 is housed within the voice coil motor 50.

[0086] The circuit board 10 can be a flexible board, a rigid board, or a rigid-flex board. In this embodiment, the circuit board 10 is a rigid-flex board. The circuit board 10 includes a first rigid board portion 101, a second rigid board portion 102, a flexible board portion 103, an electrical connector 11, a first reinforcing plate 12, and a second reinforcing plate 13. The flexible board portion 103 is connected between the first rigid board portion 101 and the second rigid board portion 102. The electrical connector 11 is disposed on one surface of the second rigid board portion 102, and the electrical connector 11 is used to realize signal transmission between the lens module 100 and an electronic device (such as a mobile phone, not shown). The first reinforcing plate 12 is disposed on a surface of the second rigid board portion 102 opposite to the electrical connector 11. The second reinforcing plate 13 is disposed on a surface of the first rigid board portion 101 opposite to the support base 30. The first rigid board portion 101 and the second rigid board portion 102 may be made of polyester or polyimide coated copper foil (such as FR-4), and the flexible board portion 103 may be made of polyester or polyimide (such as FCCL). The first reinforcing plate 12 and the second reinforcing plate 13 are made of metal (such as stainless steel) and are used to enhance the mechanical strength of the circuit board 10.

[0087] The photosensitive chip 20 is disposed on one surface of the first rigid plate portion 101, and a first adhesive layer 21 is provided between the photosensitive chip 20 and the first rigid plate portion 101 to realize the connection between the photosensitive chip 20 and the first rigid plate portion 101.

[0088] The support 30 is disposed on the first rigid plate portion 101, and a second adhesive layer 33 is provided between the support 30 and the first rigid plate portion 101 to achieve the connection between the two. The support 30 is generally a hollow rectangular structure, including a first surface 301 and a second surface 302 disposed opposite to the first surface 301. The first surface 301 faces the voice coil motor 50, and the second surface 302 faces the circuit board 10. A third through hole 31 is formed on the support 30, and the third through hole 31 passes through the first surface 301 and the second surface 302. The first surface 301 is recessed inward in the region adjacent to the third through hole 31 to form a groove 32, and the filter 40 is disposed in the groove 32.

[0089] In this embodiment, the filter 40 is generally rectangular. A third adhesive layer 42 is also provided between the filter 40 and the carrier 30 to achieve the connection between the two.

[0090] The voice coil motor 50 is generally a hollow rectangular structure. A receiving hole 52 is provided in the voice coil motor 50, and the receiving hole 52 extends through the voice coil motor 50. A portion of the lens 70 is housed within the receiving hole 52. A fourth adhesive layer 54 is also provided between the voice coil motor 50 and the carrier 30 to achieve a connection between the two. The voice coil motor 50 is made of metal or plastic.

[0091] Please refer to the following: Figure 2 , Figure 3 and Figure 4 The dustproof component 60 is generally rectangular and includes two dustproof sub-parts 61 connected end to end to form the dustproof component 60. Each dustproof sub-part 61 includes a base plate 611 and a dustproof side plate 613 connected to the base plate 611. Each base plate 611 has a notch 612. Each dustproof side plate 613 includes an outward-turning sub-plate 6132 and a set of sub-plates 6131 connected to the outward-turning sub-plate 6132. The end of the set of sub-plates 6131 away from the outward-turning sub-plate 6132 is connected to the edge of the notch 612, and the outward-turning sub-plate 6132 is disposed away from the notch 612. Two sub-base plates 611 are connected end to end to form a base plate 601, two notches 612 are connected to form a first through hole 602, two sleeve sub-plates 6131 are connected end to end to form a sleeve portion 6031, and two outward-turning sub-plates 6132 are connected end to end to form an outward-turning portion 6032.

[0092] The sleeve portion 6031 has a second through hole 6033, which connects to the first through hole 602. The outwardly turned portion 6032 is generally annular and generally parallel to the base plate 601. A dustproof groove 604 is formed by recessing the side of the outwardly turned portion 6032 facing away from the base plate 601. Dustproof adhesive (not shown) is placed in the dustproof groove 604 to adhere dust particles falling from the upper oblique position of the lens module 100. A dust collection groove 605 is formed by the side of the outwardly turned portion 6032 facing the base plate 601, the side of the sleeve portion 6031 facing away from the second through hole 6033, and the side of the base plate 601 facing the outwardly turned portion 6032, to prevent dust from falling into the lens module 100 from the side.

[0093] In this embodiment, the base plate 601 is generally rectangular and is connected to the voice coil motor 50. The first through hole 602 corresponds to the receiving hole 52, and the diameter of the first through hole 602 is equal to or smaller than the diameter of the receiving hole 52. Positioning holes 606 are provided around the base plate 601, which can be for dispensing adhesive or soldering, and are used to position the dustproof component 60 on the surface of the voice coil motor 50.

[0094] In other embodiments, the dust collection trough 605 is provided with dustproof adhesive, which can further adhere to dust to improve the dustproof effect.

[0095] The sleeve portion 6031 is generally frustum-shaped. The sleeve portion 6031 has a height direction G or a central axis of the sleeve portion 6031, which is away from the base plate 601 along the height direction G. The diameter of the second through hole 6033 gradually decreases to further prevent dust from entering the lens module 100 through the gap between the voice coil motor 50 and the lens 70.

[0096] Please refer to it again. Figure 2 A fifth adhesive layer 62 is also provided between the dustproof component 60 and the voice coil motor 50 to achieve the connection between the two.

[0097] The lens 70 includes a body 71 and a dust cover 72. The dust cover 72 is disposed at the end of the body 71 opposite to the voice coil motor 50, and a portion of the body 71 is housed in the receiving hole 52. The dust cover 72 is generally a disc, and the diameter of the dust cover 72 is larger than the diameter of the receiving hole 52.

[0098] Please refer to it again. Figure 2 A sixth adhesive layer 73 is also provided between the lens 70 and the receiving hole 52 to achieve the connection between the two.

[0099] During actual assembly, the lens module 100 is first assembled by placing the sixth adhesive layer 73 on the body 71 of the lens 70 and positioning it in the receiving hole 52. Then, two dustproof sub-parts 61 are connected end-to-end and disposed on one surface of the voice coil motor 50 to form the dustproof component 60, which is located between the dustproof cover 72 and the voice coil motor 50. Finally, the dustproof component 60 is fixed to the voice coil motor 50 by applying adhesive or soldering to complete the assembly.

[0100] The dustproof component 60 provided in this application has two mirror-symmetrical dustproof sub-parts 61, facilitating assembly and disassembly in practical applications. The dustproof component 60 has a dustproof groove 604 and a dust collection groove 605. By placing the dustproof component 60 on one surface of the voice coil motor 50, the complexity of the path for dust particles in the environment to enter the lens module 100 can be effectively increased. Furthermore, by providing dustproof adhesive in the dustproof groove 604 and dust collection groove 605, dust can be further adhered, improving the dustproof effect. The dustproof component 60 has a simple structure and strong practicality. Its application in the lens module 100 can effectively reduce imaging defects caused by dust particles and has a long-lasting effect. In addition, by using the dustproof component 60 and the dustproof sheet 80 to shield the interior of the receiving hole 52, the appearance of the lens module 100 can be made more concise and aesthetically pleasing.

[0101] Please see Figure 5 , Figure 6 and Figure 7 Another embodiment of this application also provides a lens module 200, which has a structure that is substantially the same as that of the lens module 100, except that:

[0102] The dustproof component 60 is integrally formed and includes a base plate 601 and a dustproof sleeve 603. The base plate 601 has a first through hole 602, and the dustproof sleeve 603 is disposed corresponding to the first through hole 602. The dustproof sleeve 603 includes a sleeve portion 6031 and an outwardly turned portion 6032. The sleeve portion 6031 has a second through hole 6033, and one end of the sleeve portion 6031 extends away from the second through hole 6033 to form the outwardly turned portion 6032. The sleeve portion 6031 is disposed on one side of the base plate 601 corresponding to the first through hole 602, the second through hole 6033 communicates with the first through hole 602, and the outwardly turned portion 6032 is approximately annular and approximately parallel to the base plate 601. The outward-facing portion 6032 has a recessed dustproof groove 604 on one side facing away from the base plate 601. Dustproof adhesive (not shown) is placed in the dustproof groove 604 to trap dust particles falling from the upper side of the lens module 200. A dust collection groove 605 is formed by the side of the outward-facing portion 6032 facing the base plate 601, the side of the sleeve portion 6031 facing away from the second through hole 6033, and the side of the base plate 601 facing the outward-facing portion 6032, to prevent dust from falling into the lens module 200 from the side.

[0103] The lens 70 includes a first lens portion 701, a second lens portion 702, a third lens portion 703, and a fourth lens portion 704. The first lens portion 701, the second lens portion 702, the third lens portion 703, and the fourth lens portion 704 are connected sequentially, and their diameters increase sequentially. The first lens portion 701, the second lens portion 702, the third lens portion 703, and the fourth lens portion 704 of the lens 70 are integrally formed into the lens 70.

[0104] The lens module 200 also includes a dustproof sheet 80, which is disposed at the end of the first lens portion 701 opposite to the second lens portion 702. The third lens portion 703 and the fourth lens portion 704 are received in the receiving hole 52, and the first lens portion 701 and the second lens portion 702 are exposed to the surface of the voice coil motor 50 through the first through hole 602 and the second through hole 6033.

[0105] The dustproof sheet 80 is roughly a circular ring, and the outer diameter of the dustproof sheet 80 is larger than the diameter of the receiving hole 52, which is used to further prevent dust in the environment from falling into the lens module 200 through the gap between the dustproof component 60 and the lens 70.

[0106] During actual assembly, the lens module 200 is first placed in the receiving hole 52 through the sixth adhesive layer 73; then, the dustproof component 60 is placed on one surface of the voice coil motor 50 and fixed by dispensing adhesive or soldering; finally, the dustproof sheet 80 is placed on the end of the lens 70 away from the voice coil motor 50, thus completing the assembly.

[0107] Please see Figure 8 This application also provides an electronic device 300, including the lens module 100. The electronic device 300 can be a mobile phone, wearable device, computer device, vehicle, or monitoring device, etc. In this embodiment, the electronic device 300 is a mobile phone.

[0108] The above description is merely an optimized implementation of this application, but in actual applications, it should not be limited to this implementation.

Claims

1. A lens module, characterized in that, The device includes a voice coil motor, a dustproof component, and a lens. The voice coil motor has a receiving hole, a portion of the lens is received in the receiving hole, and another portion of the lens protrudes from the voice coil motor. The dustproof component includes at least two dustproof sub-parts connected end-to-end to form the dustproof component. Each dustproof sub-part includes a base plate and a dustproof side plate connected to the base plate. Each base plate has a notch. Each dustproof side plate includes an outward-turning sub-plate and a set of sub-plates connected to the outward-turning sub-plate. The end of the set of sub-plate away from the outward-turning sub-plate is connected to the edge of the notch. The outward-turning sub-plate is disposed away from the notch. Multiple sub-base plates are connected end to end to form a base plate, and multiple notches are connected to form a first through hole. Multiple bundled sub-plates are connected end to end to form a sleeve portion. The sleeve portion has a second through hole, which is connected to the first through hole. Multiple outward-turning sub-plates are connected end to end to form an outward-turning portion, which is disposed away from the second through hole. The side of the outward-turned part facing the bottom plate, the side of the sleeve part away from the second through hole, and the side of the bottom plate facing the outward-turned part are arranged to form a dust collection groove; The dustproof component is disposed between the voice coil motor and another part of the lens. The first through hole is disposed corresponding to the receiving hole, and the diameter of the first through hole is equal to or smaller than the diameter of the receiving hole.

2. The lens module as described in claim 1, characterized in that, The lens module also includes a dustproof sheet, which is disposed at the end of the lens away from the voice coil motor, and the dustproof component is located between the dustproof sheet and the voice coil motor.

3. The lens module as described in claim 2, characterized in that, The dustproof sheet is circular, and the outer diameter of the dustproof sheet is larger than the diameter of the receiving hole.

4. The lens module as described in claim 1, characterized in that, The lens includes a body and a dust cover. The dust cover is disposed at the end of the body away from the voice coil motor. Part of the body is received in the receiving hole, and another part of the body and the dust cover are exposed on a surface of the voice coil motor. The dustproof component is located between the dust cover and the voice coil motor.

5. The lens module as described in claim 4, characterized in that, The dust cover is disc-shaped, and the diameter of the dust cover is larger than the diameter of the receiving hole.

6. The lens module as described in claim 1, characterized in that, The outward-turned part is parallel to the base plate, and the side of the outward-turned part facing away from the base plate is recessed to form a dustproof groove, and dustproof adhesive is provided in the dustproof groove.

7. The lens module as described in claim 1, characterized in that, The diameter of the second through hole gradually decreases from the direction closest to the base plate to the direction furthest from the base plate.

8. The lens module as described in claim 1, characterized in that, The dustproof component is formed by the integration of at least two dustproof sub-components.

9. An electronic device, characterized in that, Includes the lens module as described in any one of claims 1 to 8.

Images