WO2017065273A1 - サスペンションワイヤ - Google Patents

サスペンションワイヤ Download PDF

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Publication number
WO2017065273A1
WO2017065273A1 PCT/JP2016/080533 JP2016080533W WO2017065273A1 WO 2017065273 A1 WO2017065273 A1 WO 2017065273A1 JP 2016080533 W JP2016080533 W JP 2016080533W WO 2017065273 A1 WO2017065273 A1 WO 2017065273A1
Authority
WO
WIPO (PCT)
Prior art keywords
suspension wire
plating layer
wire
range
tensile strength
Prior art date
Application number
PCT/JP2016/080533
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
研二 坂
Original Assignee
東京特殊電線株式会社
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 東京特殊電線株式会社 filed Critical 東京特殊電線株式会社
Priority to KR1020187005350A priority Critical patent/KR20180025986A/ko
Priority to CN201680049203.7A priority patent/CN107922999A/zh
Priority to KR1020187037265A priority patent/KR102403981B1/ko
Publication of WO2017065273A1 publication Critical patent/WO2017065273A1/ja

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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C9/00—Alloys based on copper
    • 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
    • G02B27/64—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image
    • G02B27/646—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image compensating for small deviations, e.g. due to vibration or shake
    • 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
    • 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
    • G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
    • H04N23/682—Vibration or motion blur correction
    • H04N23/685—Vibration or motion blur correction performed by mechanical compensation

Definitions

  • JP 2003-168229 A Japanese Unexamined Patent Publication No. 2011-211984 JP 2011-65140 A JP 2005-281757 A International publication WO2011 / 030898 International Publication WO2013 / 047276 International Publication WO2014 / 069318
  • the suspension wire 10 is made of a CuZr-based alloy used in a micro camera module.
  • the CuZr-based alloy contains Zr in the range of 2.0 atomic% to 5.0 atomic%, the outer diameter including the conductive plating layer 2 is in the range of 20 ⁇ m to 50 ⁇ m, and the tensile strength Is 1500 MPa or more, and the electrical conductivity is in the range of 30% IACS to 50% IACS.
  • the copper matrix is composed of primary copper and acts to increase the electrical conductivity.
  • the composite phase is composed of a copper-Zr compound phase and a copper phase.
  • the copper-Zr compound phase is a compound represented by the general formula Cu 9 Zr 2 .
  • the composite phase includes an amorphous phase and can further increase the tensile strength. The tensile strength can be increased by increasing the Zr content (atomic%), increasing the eutectic phase ratio, decreasing the phase interval, or increasing the amorphous ratio.
  • a CuZr-based alloy wire having a double fibrous structure of a matrix phase-composite phase fibrous structure and a composite phase fibrous structure, which are formed into a dense fibrous structure.
  • the drawing method is not particularly limited, and examples thereof include hole die drawing processing and roller die drawing processing.
  • the cross-section reduction rate in wire drawing is increased, the volume of the composite phase is increased, and the tensile strength can be further increased.
  • the tensile strength of the suspension wire can be controlled by the drawing degree, the Zr content, the correction temperature of the tension annealing (heat treatment conditions), and the like.
  • the relationship between the degree of wire drawing and the tensile strength tends to improve the tensile strength as the degree of wire drawing increases.
  • the conductivity tends to decrease as the degree of wire drawing increases.
  • the relationship between the Zr content and the tensile strength tends to improve the tensile strength as the Zr content increases.
  • the straightness of the suspension wire is preferably 600 mm or more in terms of the radius of curvature.
  • a CuZr-based alloy wire is used as a suspension wire for a camera shake correction device, high straightness is necessary for realizing high-accuracy positioning and operation, but by having a straightness with a curvature radius of 600 mm or more, Can satisfy the request.
  • the suspension wire may be provided with other layers as necessary.
  • an insulating film may be provided.
  • the insulating film at least one or two or more resin films selected from polyurethane resin, polyester resin, polyesterimide resin, and polyamideimide resin can be provided.
  • a solderable urethane resin film or the like is preferable as the insulating film.
  • the thickness of an insulating film is not specifically limited, For example, it is preferable to exist in the range of 3 micrometers or more and 10 micrometers or less. Further, a layer such as nylon or fusion coating may be provided.
  • a base film for the conductive plating layer may be provided.
  • the conductive plating layer is a copper plating layer
  • the suspension wire 10 since the suspension wire 10 according to the present invention has an outer diameter including the conductive plating layer within the above range, the suspension wire 10 is preferably used as a short suspension wire for the camera shake correction device included in the micro camera module. be able to. Further, even if the diameter is small and short within the above range, the tensile strength is within the above range, so that it is preferable as a suspension wire for a camera shake correction device. In addition, even if an impact such as a drop is applied to a small portable device such as a smartphone, disconnection or deformation does not occur.
  • the conductivity of the suspension wire including the conductive plating layer is within the above range, even a thin wire having a diameter of 20 ⁇ m or more and 50 ⁇ m or less exhibits good conductivity and can contribute to reduction of power consumption.
  • the thin suspension wire used in such a micro camera module is made of a CuZr-based alloy containing Zr within the above range, thereby providing a thin, strong, and highly conductive suspension with sufficient springiness. A wire can be provided.
  • the suspension wire according to the present invention is used in various types of camera shake correction devices as described in Patent Document 3.
  • the camera shake correction device is provided in a small portable device such as a smartphone equipped with a micro camera module.
  • the camera shake correction device has a camera shake correction function for correcting a lens position displaced by vibration when shooting. Since the unit having such a camera shake correction function has recently become lower in height, a thin wire with a high tensile strength, such as the suspension wire according to the present invention, having an outer diameter of 20 ⁇ m or more and 50 ⁇ m or less is short ( For example, a sufficient camera shake correction device cannot be configured unless it is used at a length of about 2 mm or less.
  • the ultra-small camera module for example, generates a lens, a suspension wire that elastically urges the lens to an initial position in the optical axis direction, and an electromagnetic force that resists the urging force of the suspension wire to cause the lens to be an optical axis.
  • it basically includes electromagnetic driving means that can be driven in the vertical direction.
  • the electromagnetic driving means For example, a cylindrical yoke, a coil accommodated inside the inner peripheral wall of the yoke, and surrounding the coil and accommodated inside the outer peripheral wall of the yoke. Some have magnets.
  • the suspension wire acts to elastically bias the lens to the initial position in the direction perpendicular to the optical axis, and also acts as a power feeding path to the coil. Therefore, the suspension wire is required to have high tensile strength and conductivity. Since the suspension wire is soldered to the lead wire as a power feeding path to the coil, good solderability is also required.
  • the lens is mounted on a lens carrier, and a coil is mounted on the lens carrier. Normally, this lens carrier is supported by 4 to 10 suspension wires at four corners.
  • a camera shake correction device for a small portable device such as a smartphone equipped with a micro camera module has a small space at the base of the suspension wire. Moreover, the space is indirectly given. For this reason, there is a structural difference in that the impact on the suspension wire is increased due to a drop impact or the like, and the impact is hardly absorbed.
  • the lens has a large diameter due to the need for higher pixels, and the mass of the movable part on which the suspension wire is suspended tends to increase. Such an increase in the mass of the movable part causes a large stress to be applied to the suspension wire that has become thinner due to the low profile.
  • the present invention can effectively solve such problems and can provide a suspension wire for a camera shake correction apparatus that cannot be applied to a conventional suspension wire for an optical pickup.
  • Example 1 (0.040mm CuZr alloy wire) A bus bar having an outer diameter of 7.0 mm made of CuZr alloy (Nippon Choshi Co., Ltd.) was used. This CuZr alloy contains 2.5 atomic% of Zr, Cu is the balance (about 97.5 atomic%), and other inevitable impurities are 0.1 atomic% or less.
  • the bus bar was cold drawn to an outer diameter of 0.3 mm. Thereafter, a pretreatment for plating was performed, and silver plating with a thickness of 1.5 ⁇ m was applied. Thereafter, cold drawing was performed to an outer diameter of 0.040 mm using a multistage wire drawing machine.
  • Cold drawing was performed from an outer diameter of 3.0 mm to a cross-sectional area reduction rate per die of 5% to 20% and a drawing speed of 150 to 500 m / min to 0.040 mm.
  • the drawing degree ⁇ [ln (A0 / A1)] was 8.6.
  • the wire after drawing had a tensile strength of 1580 MPa and a conductivity of 30.5% IACS.
  • the cross-sectional area ratio of the silver plating layer in the cross section of the wire was 2%.
  • the tensile strength was measured with a small desktop tensile tester (Shimadzu Corporation, EZ-TEST).
  • the conductivity was measured by a 4-terminal resistance measurement method.
  • Example 2 In Experiment 1, a suspension wire was produced in the same manner as in Experiment 1 except that the outer diameter including the silver plating layer was 0.050 mm. In addition, the characteristic test after straightening was performed in the same manner as in Experiment 1. The results are shown in Table 2.
  • Example 3 A bus bar having an outer diameter of 7.0 mm made of CuZr alloy (Nippon Choshi Co., Ltd.) was used. This CuZr alloy contains 2.9 atomic% of Zr, Cu is the balance (about 97.1 atomic%), and other inevitable impurities are 0.1 atomic% or less.
  • a suspension wire having an outer diameter of 0.040 mm including a silver plating layer was produced in the same manner as in Experiment 1 except that this CuZr alloy wire was used.
  • the characteristic test after straightening was performed in the same manner as in Experiment 1. The results are shown in Table 3.
  • the CuZr alloy wire containing 2.9 atomic% Zr and including the silver plating layer and having an outer diameter of 0.040 mm has a tensile strength of 1708 MPa to 1938 MPa except for one having a radius of curvature of less than 600 mm.
  • the conductivity was in the range of 30.0% IACS to 43.0% IACS. From the results of the tensile strength and electrical conductivity, it was found that, except for those having a radius of curvature of less than 600 mm, it can be suitably used as a short suspension wire for the camera shake correction device provided in the ultra-small camera module.
  • the CuZr-based alloy wire containing 2.9 atomic% of Zr and including the silver plating layer and having an outer diameter of 0.050 mm has a tensile strength of 1619 MPa to 1835 MPa except for those having a radius of curvature of less than 600 mm.
  • the conductivity was in the range of 33.1% IACS to 44.4% IACS. From the results of the tensile strength and electrical conductivity, it was found that, except for those having a radius of curvature of less than 600 mm, it can be suitably used as a short suspension wire for the camera shake correction device provided in the ultra-small camera module.
  • Example 5 A bus bar having an outer diameter of 7.0 mm made of CuZr alloy (Nippon Choshi Co., Ltd.) was used. This CuZr-based alloy contains 0.5 atomic% of Zr, Cu is the balance (about 99.5 atomic%), and other inevitable impurities are 0.1 atomic% or less.
  • a suspension wire having an outer diameter of 0.040 mm including a silver plating layer was produced in the same manner as in Experiment 1 except that this CuZr alloy wire was used.
  • the characteristic test after straightening was performed in the same manner as in Experiment 1. The results are shown in Table 5.
  • the CuZr-based alloy wire containing 0.5 atomic% of Zr and including the silver plating layer and having an outer diameter of 0.040 mm has a tensile strength of 867 MPa to 1048 MPa except for those having a radius of curvature of less than 600 mm.
  • the conductivity was in the range of 52.4% IACS to 66.0% IACS.
  • the tensile strength that can be suitably used as a short suspension wire for the camera shake correction device provided in the micro camera module is as follows. It was found that the electrical conductivity was too large.
  • the CuZr alloy wire containing 0.5 atomic% of Zr and including the silver plating layer and having an outer diameter of 0.050 mm has a tensile strength of 802 MPa to 984 MPa except for those having a radius of curvature of less than 600 mm.
  • the conductivity was in the range of 55.8% IACS to 71.5% IACS.
  • the tensile strength that can be suitably used as a short suspension wire for the camera shake correction device provided in the micro camera module is as follows. It was found that the electrical conductivity was too large.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Optics & Photonics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Adjustment Of Camera Lenses (AREA)
  • Lens Barrels (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Conductive Materials (AREA)
PCT/JP2016/080533 2015-10-15 2016-10-14 サスペンションワイヤ WO2017065273A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1020187005350A KR20180025986A (ko) 2015-10-15 2016-10-14 서스펜션 와이어
CN201680049203.7A CN107922999A (zh) 2015-10-15 2016-10-14 悬挂线
KR1020187037265A KR102403981B1 (ko) 2015-10-15 2016-10-14 서스펜션 와이어

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015-203655 2015-10-15
JP2015203655A JP6012834B1 (ja) 2015-10-15 2015-10-15 サスペンションワイヤ

Publications (1)

Publication Number Publication Date
WO2017065273A1 true WO2017065273A1 (ja) 2017-04-20

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PCT/JP2016/080533 WO2017065273A1 (ja) 2015-10-15 2016-10-14 サスペンションワイヤ

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JP (1) JP6012834B1 (zh)
KR (2) KR20180025986A (zh)
CN (1) CN107922999A (zh)
WO (1) WO2017065273A1 (zh)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6982147B1 (ja) * 2020-08-18 2021-12-17 東京特殊電線株式会社 レンズ支持装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000156117A (ja) * 1998-11-18 2000-06-06 Totoku Electric Co Ltd 高導電型真直サスペンションワイヤ
JP2002105612A (ja) * 2000-10-04 2002-04-10 Ngk Insulators Ltd ベリリウム銅ワイヤ及びその製造方法
JP2004334923A (ja) * 2003-04-30 2004-11-25 Totoku Electric Co Ltd 光ピックアップ用サスペンションワイヤおよびその製造方法
WO2011030898A1 (ja) * 2009-09-14 2011-03-17 日本碍子株式会社 銅合金線材およびその製造方法
WO2011030899A1 (ja) * 2009-09-14 2011-03-17 日本碍子株式会社 銅合金箔、それを用いたフレキシブルプリント基板および銅合金箔の製造方法
JP2011219840A (ja) * 2010-04-14 2011-11-04 Totoku Electric Co Ltd サスペンションワイヤ

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
EP1019920A4 (en) * 1997-10-01 2001-02-28 American Superconductor Corp SUBSTRATES HAVING INCREASED OXIDATION RESISTANCE
JP2001234309A (ja) 2000-02-16 2001-08-31 Hitachi Cable Ltd 極細銅合金撚線の製造方法
JP3604087B2 (ja) 2001-11-30 2004-12-22 昭和電線電纜株式会社 光ピックアップ装置のサスペンションワイヤ用線材及び光ピックアップ装置。
JP4312641B2 (ja) 2004-03-29 2009-08-12 日本碍子株式会社 強度および導電性を兼備した銅合金およびその製造方法
JP5846346B2 (ja) 2009-08-21 2016-01-20 ミツミ電機株式会社 カメラの手振れ補正装置
JP5060625B2 (ja) * 2011-02-18 2012-10-31 三菱伸銅株式会社 Ｃｕ−Ｚｒ系銅合金板及びその製造方法
WO2013047276A1 (ja) 2011-09-29 2013-04-04 日本碍子株式会社 銅合金線材およびその製造方法
WO2014069318A1 (ja) 2012-11-01 2014-05-08 日本碍子株式会社 銅合金およびその製造方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000156117A (ja) * 1998-11-18 2000-06-06 Totoku Electric Co Ltd 高導電型真直サスペンションワイヤ
JP2002105612A (ja) * 2000-10-04 2002-04-10 Ngk Insulators Ltd ベリリウム銅ワイヤ及びその製造方法
JP2004334923A (ja) * 2003-04-30 2004-11-25 Totoku Electric Co Ltd 光ピックアップ用サスペンションワイヤおよびその製造方法
WO2011030898A1 (ja) * 2009-09-14 2011-03-17 日本碍子株式会社 銅合金線材およびその製造方法
WO2011030899A1 (ja) * 2009-09-14 2011-03-17 日本碍子株式会社 銅合金箔、それを用いたフレキシブルプリント基板および銅合金箔の製造方法
JP2011219840A (ja) * 2010-04-14 2011-11-04 Totoku Electric Co Ltd サスペンションワイヤ

Also Published As

Publication number Publication date
KR20180025986A (ko) 2018-03-09
KR20190000911A (ko) 2019-01-03
CN107922999A (zh) 2018-04-17
JP6012834B1 (ja) 2016-10-25
KR102403981B1 (ko) 2022-05-31
JP2017075374A (ja) 2017-04-20

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