WO2021054098A1 - 撮像装置用防塵ゴム - Google Patents

撮像装置用防塵ゴム Download PDF

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Publication number
WO2021054098A1
WO2021054098A1 PCT/JP2020/032837 JP2020032837W WO2021054098A1 WO 2021054098 A1 WO2021054098 A1 WO 2021054098A1 JP 2020032837 W JP2020032837 W JP 2020032837W WO 2021054098 A1 WO2021054098 A1 WO 2021054098A1
Authority
WO
WIPO (PCT)
Prior art keywords
central axis
dustproof rubber
image pickup
tubular portion
imaging device
Prior art date
Application number
PCT/JP2020/032837
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
藤原　剛
慶大 衛藤
Original Assignee
ヤマウチ株式会社
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.)
Filing date
Publication date
Application filed by ヤマウチ株式会社 filed Critical ヤマウチ株式会社
Priority to DE112020004444.0T priority Critical patent/DE112020004444B4/de
Priority to CN202080061676.5A priority patent/CN114365041B/zh
Publication of WO2021054098A1 publication Critical patent/WO2021054098A1/ja

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/0006—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means to keep optical surfaces clean, e.g. by preventing or removing dirt, stains, contamination, condensation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/52—Elements optimising image sensor operation, e.g. for electromagnetic interference [EMI] protection or temperature control by heat transfer or cooling elements
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies
    • G03B17/08—Waterproof bodies or housings
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B2217/00—Details of cameras or camera bodies; Accessories therefor
    • G03B2217/002—Details of arrangement of components in or on camera body

Definitions

  • the present invention relates to a dustproof rubber for an imaging device.
  • Patent Document 1 Japanese Unexamined Patent Publication No. 2019-82546 describes an imaging device.
  • the image pickup apparatus described in Patent Document 1 includes a substrate, an image pickup device, an elastic seal member, and a holder.
  • An image sensor is mounted on the substrate.
  • the elastic sealing member has a central axis, and the central axis is arranged on the substrate so as to coincide with the optical axis of the image pickup device.
  • the image sensor is arranged inside the elastic sealing member.
  • the holder is attached to the substrate so as to sandwich the elastic sealing member with the substrate.
  • the elastic sealing member described in Patent Document 1 has a large reaction force and a large amount of deformation when compressed.
  • the "deformation amount” means the amount of deformation in the direction orthogonal to the compression direction (X direction and Y direction when the compression direction is the Z direction).
  • the present invention has been made in view of the above-mentioned problems of the prior art. More specifically, the present invention provides a dustproof rubber for an imaging device capable of reducing the reaction force and the amount of deformation when compressed.
  • the dustproof rubber for an imaging device has a central axis, and includes a first tubular portion and a widening portion.
  • the first tubular portion extends along the central axis and has a first end and a second end opposite to the first end in a direction along the central axis.
  • the widening portion extends along the central axis and is connected to the second end. The width of the widened portion increases as the distance from the second end increases.
  • the dustproof rubber for an image pickup device may further include a connecting portion and a second tubular portion connected to the first end via the connecting portion.
  • the second tubular portion may extend along the central axis.
  • the connecting portion may extend from the first end to the second tubular portion along a direction intersecting the central axis.
  • the width of the second tubular portion may be different from the width of the first tubular portion.
  • the width of the second tubular portion may be smaller than the width of the first tubular portion.
  • the wall thickness of the widened portion may become thinner as the distance from the second end increases.
  • the widening portion may have a flat surface at an end opposite to the second end in the direction along the central axis.
  • the flat surface may be orthogonal to the central axis.
  • the first tubular portion may have a first length in a direction along the central axis.
  • the widened portion may have a second length in the direction along the central axis.
  • the second length may be 0.3 times or more and 3 times or less the first length.
  • the reaction force and the amount of deformation when compressed can be reduced.
  • dust-proof rubber for an image pickup device 10 (First Embodiment)
  • dust-proof rubber for an image pickup device 10 the configuration of the dust-proof rubber for an image pickup device (hereinafter, referred to as “dust-proof rubber for an image pickup device 10”) according to the first embodiment will be described.
  • FIG. 1 is a cross-sectional view taken along the central axis A of the dustproof rubber 10 for an imaging device.
  • the dustproof rubber 10 for an imaging device has a central axis A.
  • the dustproof rubber 10 for an image pickup apparatus has a first tubular portion 11 and a widening portion 12.
  • the dustproof rubber 10 for the image pickup device is made of, for example, silicone rubber.
  • the dustproof rubber 10 for the image pickup apparatus may be made of ethylene propylene diene rubber (EPDM).
  • EPDM ethylene propylene diene rubber
  • the materials constituting the dustproof rubber 10 for the image pickup apparatus are not limited to these materials.
  • the hardness (durometer A hardness) of the material constituting the dustproof rubber 10 for the image pickup apparatus is preferably 20 or more and 70 or less. More preferably, the durometer A hardness of the material constituting the dustproof rubber 10 for the image pickup apparatus is 25 or more and 50 or less.
  • the hardness of the dustproof rubber 10 for an imaging device is measured according to a JIS standard (JIS K 6253: 2006).
  • the first tubular portion 11 extends along the central axis A.
  • the first tubular portion 11 has a first end 11a and a second end 11b in a direction along the central axis A.
  • the second end 11b is the opposite end of the first end 11a.
  • the first tubular portion 11 has a rectangular shape in a cross-sectional view orthogonal to the central axis A. More specifically, the first tubular portion 11 has a square shape. The first tubular portion 11 has an inner wall surface 11c and an outer wall surface 11d.
  • the first tubular portion 11 has a width W1 and a wall thickness T1.
  • the width W1 is the distance between the portions of the first tubular portion 11 that face each other with the central axis A in between.
  • the wall thickness T1 is the distance between the inner wall surface 11c and the outer wall surface 11d.
  • the width W1 is constant between the first end 11a and the second end 11b.
  • the wall thickness T1 is constant between the first end 11a and the second end 11b.
  • the first tubular portion 11 has a length L1.
  • the length L1 is the distance between the first end 11a and the second end 11b in the direction along the central axis A.
  • the widening portion 12 has a tubular shape.
  • the widening portion 12 extends along the central axis A.
  • the widening portion 12 is connected to the second end 11b of the first tubular portion 11.
  • the widening portion 12 has a first end 12a and a second end 12b in a direction along the central axis A.
  • the first end 12a is on the first tubular portion 11 side (second end 11b side).
  • the second end 12b is the opposite end of the first end 12a.
  • the widening portion 12 has a rectangular shape in a cross-sectional view orthogonal to the central axis A.
  • the widening portion 12 has an inner wall surface 12c and an outer wall surface 12d.
  • the widening portion 12 has a width W2.
  • the width W2 is the distance between the widening portions 12 facing each other with the central axis A in between.
  • the width W2 increases from the first end 12a toward the second end 12b (the width increases as the distance from the second end 11b increases).
  • the width W2 at the first end 12a is equal to the width W1.
  • the widening portion 12 has a length L2.
  • the length L2 is the distance between the first end 12a and the second end 12b in the direction along the central axis A.
  • the length L2 is preferably 0.3 times or more and 3 times or less the length L1. More preferably, the length L2 is 0.5 times or more and 1.5 times or less the length L1. If the length L2 is less than 0.3 times the length L1, the reaction force of the dustproof rubber 10 for the image pickup apparatus may increase. When the length L2 exceeds three times the length L1, the amount of deformation of the dustproof rubber 10 for the image pickup apparatus may increase.
  • FIG. 2 is a cross-sectional view of the lens unit 100 using the dustproof rubber 10 for an imaging device.
  • the lens unit 100 includes a dustproof rubber 10 for an image pickup device, a substrate 21, an image pickup element 22, a lens case 23, and a lens 24.
  • the board 21 is a printed wiring board.
  • the image sensor 22 is, for example, a CMOS (Complementary Metal Oxide Semiconductor) image sensor.
  • the image sensor 22 may be a CCD (Charge Coupled Device) image sensor. It is mounted on the substrate 21.
  • the lens case 23 is attached to the substrate 21.
  • the lens case 23 is fixed to the substrate 21 with, for example, an adhesive.
  • the lens 24 is attached to the upper surface of the lens case 23.
  • the dustproof rubber 10 for the image pickup device is arranged on the substrate 21 so that the central axis A coincides with the optical axis of the image pickup element 22.
  • the image pickup device 22 is arranged inside the dustproof rubber 10 for the image pickup device.
  • the dustproof rubber 10 for an image pickup device is sandwiched between a substrate 21 and a lens case 23.
  • the first tubular portion 11 (first end 11a) is in contact with the lens case 23, and the widening portion 12 is in contact with the substrate 21.
  • the effect of the dustproof rubber 10 for an imaging device will be described in comparison with a comparative example.
  • the dustproof rubber 10 for the image pickup apparatus is incorporated into the lens unit 100, it is sandwiched between the substrate 21 and the lens case 23, and therefore receives compression from the substrate 21 and the lens case 23.
  • the image pickup device dustproof rubber 10 and the image pickup device 22 are used in order to avoid contact between the image pickup device dustproof rubber 10 and the image pickup element 22 when compressed. It is necessary to secure a large margin between them. As a result, the image pickup device becomes large. Further, when the reaction force of the dustproof rubber 10 for an image pickup apparatus due to compression is large, the reaction force may cause the substrate 21 and the lens case 23 to be loosened or the substrate 21 to be deformed. Therefore, it is desired that the dustproof rubber 10 for an image pickup apparatus has a small amount of deformation and a small reaction force when compressed.
  • FIG. 3 is a result of a compression deformation analysis simulation when the dustproof rubber 10 for an imaging device does not have a widening portion 12.
  • FIG. 4 is a result of a compression deformation analysis simulation when the dustproof rubber 10 for an imaging device has a widening portion 12. As shown in FIG. 3, when the dustproof rubber 10 for the imaging device does not have the widening portion 12, the first tubular portion 11 buckles because it cannot withstand the compressive force from the substrate 21 and the lens case 23. Therefore, the dustproof property is impaired.
  • the dustproof rubber 10 for the image pickup apparatus has the widening portion 12, as shown in FIG. 4, the buckling in the first tubular portion 11 is suppressed, and as a result, the amount of deformation is reduced. ..
  • the width W2 of the widening portion 12 is larger than the width W1 of the first tubular portion 11 (that is, the widening portion 12 is along the direction from the first tubular portion 11 to the inner wall surface 11c to the outer wall surface 11d. (Because it is overhanging), it is considered that the widening portion 12 is bent due to the bending moment applied to the widening portion 12 when the dustproof rubber 10 for the imaging device is compressed, and the bending absorbs the compression. As a result of the compression being absorbed, the reaction force is also reduced. As described above, since the dustproof rubber 10 for the image pickup apparatus has the widening portion 12, the amount of deformation and the reaction force when compression is applied can be reduced.
  • dust-proof rubber for an image pickup device 30 the configuration of the dust-proof rubber for an image pickup device (hereinafter, referred to as “dust-proof rubber for an image pickup device 30”) according to the second embodiment will be described.
  • the points different from the configuration of the dustproof rubber 10 for the image pickup apparatus 10 will be mainly described, and the duplicated description will not be repeated.
  • FIG. 5 is a cross-sectional view of the dustproof rubber 30 for an imaging device along the central axis A.
  • the dustproof rubber 30 for an imaging device has a first tubular portion 11 and a widening portion 12.
  • the configuration of the dustproof rubber 30 for the image pickup device is the same as the configuration of the dustproof rubber 10 for the image pickup device.
  • the configuration of the dustproof rubber 30 for the imaging device is different from the configuration of the dustproof rubber 10 for the imaging device with respect to the detailed configuration of the widening portion 12.
  • the widening portion 12 has a flat surface 12e.
  • the flat surface 12e is located at the second end 12b and constitutes the end surface of the widening portion 12 at the second end 12b.
  • the flat surface 12e is orthogonal to the central axis A.
  • the widening portion 12 has a wall thickness T2.
  • the wall thickness T2 is the distance between the inner wall surface 12c and the outer wall surface 12d. In the dustproof rubber 30 for an image pickup apparatus, the wall thickness T2 becomes thinner from the first end 12a toward the second end 12b (that is, as the distance from the second end 11b).
  • the wall thickness T2 becomes thinner from the first end 12a to the second end 12b, bending of the widening portion 12 when compressed is more likely to occur. Therefore, according to the image pickup device dustproof rubber 30, the amount of deformation when compression is applied can be further reduced as compared with the image pickup device dustproof rubber 10.
  • the deformation amount of the dust-proof rubber 30 for the image pickup device was about 15% of the deformation amount of the dust-proof rubber 10 for the image pickup device. It was. The amount of deformation was measured at the center of each side of the image pickup device dustproof rubber 10 (image pickup device dustproof rubber 30) when viewed from the direction along the central axis A.
  • dust-proof rubber for an image pickup device 40 The configuration of the dust-proof rubber for an image pickup device (hereinafter, referred to as “dust-proof rubber for an image pickup device 40”) according to the third embodiment will be described below.
  • the points different from the configuration of the dustproof rubber 40 for the image pickup apparatus 40 will be mainly described, and the duplicated description will not be repeated.
  • FIG. 6 is a cross-sectional view of the dustproof rubber 40 for an imaging device along the central axis A.
  • the dustproof rubber 40 for an imaging device has a first tubular portion 11 and a widening portion 12.
  • the configuration of the dustproof rubber 40 for the imaging device is the same as the configuration of the dustproof rubber 10 for the imaging device.
  • the configuration of the dustproof rubber 40 for an imaging device is different from the configuration of the dustproof rubber 10 for an imaging device in that it further includes a second tubular portion 13 and a connecting portion 14.
  • the second tubular portion 13 extends along the central axis A.
  • the second tubular portion 13 has a first end 13a and a second end 13b in a direction along the central axis A.
  • the first end 13a is on the side of the first tubular portion 11 (first end 11a).
  • the second end 13b is the opposite end of the first end 13a.
  • the second tubular portion 13 has a rectangular shape (more specifically, a square shape) in a cross-sectional view orthogonal to the central axis A.
  • the second tubular portion 13 has an inner wall surface 13c and an outer wall surface 13d.
  • the second tubular portion 13 has a width W3 and a wall thickness T3.
  • the width W3 is the distance between the portions of the second tubular portion 13 that face each other with the central axis A in between.
  • the wall thickness T3 is the distance between the inner wall surface 13c and the outer wall surface 13d.
  • the width W3 is constant between the first end 13a and the second end 13b.
  • the width W3 is different from the width W1. For example, the width W3 is narrower than the width W1.
  • the wall thickness T3 is constant between the first end 13a and the second end 13b.
  • the second tubular portion 13 is connected to the first tubular portion 11 via the connecting portion 14.
  • the connecting portion 14 extends from the first end 11a to the first end 13a along the direction intersecting the central axis A.
  • the second tubular portion 13 and the connecting portion 14 have an L-shaped shape.
  • the dustproof rubber 40 for an imaging device when compression is applied, the compression is absorbed not only by bending the widening portion 12 but also by bending the connecting portion 14. Therefore, according to the dustproof rubber 40 for an image pickup device, the amount of deformation and the reaction force when compression is applied can be further reduced as compared with the dustproof rubber 10 for an image pickup device.
  • the above embodiment is particularly advantageously applied to dustproof rubber for an imaging device.
  • Dustproof rubber for image sensor 11 1st tubular part, 11a 1st end, 11b 2nd end, 11c inner wall surface, 11d outer wall surface, 12 widening part, 12a 1st end, 12b 2nd end, 12c inner wall surface, 12d outer wall surface, 12e flat surface, 13 second tubular part, 13a first end, 13b second end, 13c inner wall surface, 13d outer wall surface, 14 connection part, 21 substrate, 22 image sensor, 23 lens Case, 24 lenses, 100 lens units, A central axis, L1, L2 length, T1, T2, T3 wall thickness, W1, W2, W3 width.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lens Barrels (AREA)
  • Studio Devices (AREA)
  • Camera Bodies And Camera Details Or Accessories (AREA)
PCT/JP2020/032837 2019-09-18 2020-08-31 撮像装置用防塵ゴム WO2021054098A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112020004444.0T DE112020004444B4 (de) 2019-09-18 2020-08-31 Staubschutzgummi für Bildgebungsvorrichtung
CN202080061676.5A CN114365041B (zh) 2019-09-18 2020-08-31 摄像装置用防尘橡胶

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019169287A JP6871643B2 (ja) 2019-09-18 2019-09-18 撮像装置用防塵ゴム
JP2019-169287 2019-09-18

Publications (1)

Publication Number Publication Date
WO2021054098A1 true WO2021054098A1 (ja) 2021-03-25

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PCT/JP2020/032837 WO2021054098A1 (ja) 2019-09-18 2020-08-31 撮像装置用防塵ゴム

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JP (1) JP6871643B2 (de)
CN (1) CN114365041B (de)
DE (1) DE112020004444B4 (de)
WO (1) WO2021054098A1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005031915A1 (ja) * 2003-09-26 2005-04-07 Clarion Co., Ltd. 自動車用アンテナ
JP2010251199A (ja) * 2009-04-17 2010-11-04 Mitsubishi Electric Corp プラグカバー及び送風機
JP2019082546A (ja) * 2017-10-30 2019-05-30 日本電産コパル株式会社 撮像装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3302932B2 (ja) * 1998-09-07 2002-07-15 小峰無線電機株式会社 Ｓｍａコネクタ
US7092174B2 (en) * 2001-05-18 2006-08-15 Konica Corporation Image pickup lens, image pickup apparatus and method for forming image pickup lens
DE102005028144B4 (de) 2005-06-17 2022-01-13 Robert Bosch Gmbh Kameraanordnung mit Bildsensorabdichtung gegen Umwelteinflüsse
EP2887637B1 (de) 2013-12-19 2015-11-04 Axis AB Bildkollektorvorrichtung mit abgedichtetem Sensorraum und Verfahren zum Abdichten eines Sensorraums in einer Bildkollektorvorrichtung
JP6366003B2 (ja) * 2014-07-01 2018-08-01 Nok株式会社 密封装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005031915A1 (ja) * 2003-09-26 2005-04-07 Clarion Co., Ltd. 自動車用アンテナ
JP2010251199A (ja) * 2009-04-17 2010-11-04 Mitsubishi Electric Corp プラグカバー及び送風機
JP2019082546A (ja) * 2017-10-30 2019-05-30 日本電産コパル株式会社 撮像装置

Also Published As

Publication number Publication date
CN114365041B (zh) 2022-08-26
JP2021047276A (ja) 2021-03-25
CN114365041A (zh) 2022-04-15
DE112020004444B4 (de) 2023-05-25
DE112020004444T5 (de) 2022-06-23
JP6871643B2 (ja) 2021-05-12

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