JP2016071279A5 - - Google Patents
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- JP2016071279A5 JP2016071279A5 JP2014202931A JP2014202931A JP2016071279A5 JP 2016071279 A5 JP2016071279 A5 JP 2016071279A5 JP 2014202931 A JP2014202931 A JP 2014202931A JP 2014202931 A JP2014202931 A JP 2014202931A JP 2016071279 A5 JP2016071279 A5 JP 2016071279A5
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- drive
- blade
- drive ring
- ring
- holding substrate
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- 239000000758 substrate Substances 0.000 claims description 21
- 230000005540 biological transmission Effects 0.000 claims 4
- 238000003384 imaging method Methods 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002093 peripheral Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000001429 stepping Effects 0.000 description 1
Description
本発明は、光通過経路に出入りする羽根と、光通過貫通孔を有し、前記羽根を駆動する駆動リングと、前記駆動リングを回転可能に保持する保持基板と、を備え、前記駆動リングは、前記羽根と係合する第1の係合部を有する超薄型シート状部材から形成され、前記光通過貫通孔の内縁部が、前記保持基板に設けられた第2の係合部に係合して摺動することを特徴とする羽根駆動装置にある。かかる本発明の態様によれば、駆動リングが超薄型シートから形成されるため、光通過方向における薄型化に有効となる。 The present invention comprises a blade that enters and exits the light passage path, a drive ring that has a light passage through hole and drives the blade, and a holding substrate that rotatably holds the drive ring, , Formed from an ultra-thin sheet-like member having a first engagement portion that engages with the blade, and an inner edge portion of the light passage through hole is engaged with a second engagement portion provided on the holding substrate. The blade drive device is characterized by sliding together . According to this aspect of the present invention, since the drive ring is formed from an ultra-thin sheet, it is effective for thinning in the light passing direction.
また、上記本発明の羽駆動装置では、前記第2の係合部は、前記保持基板から光通過方向に突出した突出部であることを特徴とする。
また、上記本発明の羽駆動装置では、前記第2の係合部は、前記保持基板に設けられ、前記羽根に設けられた被係合部と係合するピンが設けられた基部であることを特徴とする。
また、上記本発明の羽駆動装置では、前記第2の係合部は、前記突出部に設けられ、前記光通過経路の径方向に向けて突出した複数の凸部であることを特徴とする。
また、上記本発明の羽駆動装置では、前記保持基板との間で駆動空間を形成し、且つ該駆動空間内に前記羽根および前記駆動リングを収容するケース部材を備え、前記ケース部材は、光通過方向において前記駆動リングに当接する当接部を有し、前記当接部が前記駆動リングを前記光通過方向に対して支持することを特徴とする。
また、上記本発明の羽根駆動装置では、前記駆動リングは、ばね特性を有する前記超薄型シート状部材から形成されていることを特徴とする。かかる本発明の態様によれば、駆動リングの非回動時(駆動待機時)または回動時において形状安定性を高めることができる他、回動時の姿勢安定性向上にも寄与する。
In the wing drive device of the present invention, the second engaging portion is a protruding portion protruding in the light passing direction from the holding substrate.
In the wing drive device of the present invention, the second engaging portion is a base portion provided on the holding substrate and provided with a pin that engages with an engaged portion provided on the blade. It is characterized by.
In the wing drive device of the present invention, the second engaging portion is a plurality of convex portions provided on the projecting portion and projecting in a radial direction of the light passage path. .
The wing drive device of the present invention includes a case member that forms a drive space with the holding substrate, and that houses the blade and the drive ring in the drive space. A contact portion that contacts the drive ring in the passage direction is provided, and the contact portion supports the drive ring in the light passage direction.
In the blade drive device of the present invention, the drive ring is formed of the ultra-thin sheet-like member having spring characteristics. According to this aspect of the present invention, it is possible to improve the shape stability when the drive ring is not rotating (during driving standby) or rotating, and also contribute to improving the posture stability during rotation.
また、上記本発明の羽根駆動装置では、前記羽根は、前記駆動リングと前記保持基板との間に配置され、前記駆動リングが前記駆動空間内で駆動することによって、前記駆動リングと前記保持基板との間の前記駆動空間内のみで走行することを特徴とする。かかる本発明の態様によれば、駆動リングの回動姿勢を保った状態で羽根の走行スペースを十分に確保できる。 Further, in the blade drive device of the present invention, the blade, the disposed between the driving ring and said holding substrate, by the driving ring is driven by the drive space, said holding substrate and said driving ring The vehicle travels only in the drive space between. According to this aspect of the present invention, it is possible to sufficiently secure the traveling space of the blades while maintaining the rotational posture of the drive ring.
また、上記本発明の羽根駆動装置では、前記保持基板には、前記駆動リングの一方面側のうち前記羽根が走行する走行領域以外の部分に対して当接する支持部が設けられ、前記ケース部材には、前記駆動リングの他方面側のうち前記羽根が係合する前記第1の係合部の周囲で当接する前記当接部が設けられ、前記駆動リングは、前記支持部と前記当接部との間で回動姿勢が保持されることを特徴とする。かかる本発明の態様によれば、羽根の走行を制限することなく、保持基板及びケース部材に設けられた各当接部による部分的な接触によって駆動リングの回動姿勢を安定的に保持することができる。 Further, in the blade driving device of the present invention, the holding substrate is provided with a support portion that comes into contact with a portion other than a traveling region where the blade travels on one side of the drive ring, and the case member , said abutment portion is provided with the vane of the other side of the driving ring abuts around said first engagement portion for engaging said drive ring, the support portion and the front Kito The rotating posture is maintained between the contact portion. According to this aspect of the present invention, the rotational posture of the drive ring can be stably held by partial contact by the contact portions provided on the holding substrate and the case member without restricting the travel of the blades. Can do.
また、上記本発明の羽根駆動装置では、前記羽根のうち前記駆動リング側の面には、前記駆動リングに設けられた貫通穴に係合する係合突起部が設けられ、前記羽根のうちカバー部材側の面には、前記カバー部材に設けられたカム溝に係合するカム溝係合突起部が設けられたことを特徴とする。かかる本発明の態様によれば、駆動リングに対して羽根と係合する係合突起部を設けるだけでよいので、駆動リングの構造を簡略化できる。 In the blade drive device of the present invention, an engagement protrusion that engages a through hole provided in the drive ring is provided on a surface of the blade on the drive ring side, and the cover of the blade is a cover. The member- side surface is provided with a cam groove engaging protrusion that engages with a cam groove provided in the cover member . According to such an aspect of the present invention, it is only necessary to provide the engagement protrusion that engages the blade with respect to the drive ring, so that the structure of the drive ring can be simplified.
また、上記本発明の羽根駆動装置では、前記羽根のうち前記駆動リング側の面には、前記駆動リングに設けられたカム溝に係合するカム溝係合突起部と、前記保持基板に設けられた挿入部に挿入される回転中心軸とがそれぞれ突出して設けられたことを特徴とする。かかる本発明の態様によれば、駆動リングにカム溝を設けることで、駆動リングの更なる軽量化を図ることができ、駆動リングの高速駆動に有利となる。 In the blade drive device of the present invention, a cam groove engaging protrusion that engages with a cam groove provided on the drive ring is provided on the surface on the drive ring side of the blade, and provided on the holding substrate. The rotation center shaft to be inserted into the inserted portion is provided so as to protrude. According to this aspect of the present invention, by providing the drive ring with the cam groove, the drive ring can be further reduced in weight, which is advantageous for high-speed drive of the drive ring.
また、上記本発明の羽根駆動装置では、前記羽根は、前記光通過貫通孔の周囲において環状配置される複数枚の羽根群によって構成されることを特徴とする。かかる本発明の態様によれば、回動する駆動リングによって複数の羽根群を連動させて光通過経路を絞るための絞り装置を容易に薄型化できる。 In the blade driving device of the present invention, the blade is constituted by a plurality of blade groups arranged in a ring around the light passage through hole . According to this aspect of the present invention, it is possible to easily reduce the thickness of a diaphragm device for narrowing a light passage path by interlocking a plurality of blade groups with a rotating drive ring.
また、上記本発明の羽根駆動装置では、前記光通過貫通孔のうち前記羽根が係合する側の周縁部は、R形状部となっていることを特徴とする。かかる本発明の態様によれば、羽根との摺動部分が実質的に少なくなるため、羽根の機動性が向上する。 Further, in the blade drive device of the present invention, the peripheral edge portion of the side where the blade is engaged within the front Symbol light passing through hole is characterized in that has a R-shaped portion. According to this aspect of the present invention, since the sliding portion with the blade is substantially reduced, the mobility of the blade is improved.
駆動リング103の内係合部103bは、ベース部材102の係合部102bと係合する。ベース部材102の係合部102bは、回転中心となる円形状であってもよい。本実施形態1では、係合部102bは、複数の凸部で構成されており、駆動リング103の内係合部103bと係合する。駆動リング103とベース部材102は、駆動リング103が外側、ベース部材102が内側の関係で、係合させる。この関係にすることで、駆動リング103aの内係合部103bは、ベース部材102の係合部102aにより支持されるため、駆動リング103は周方向の変形を抑えることができる。そのため、駆動リング103の基部103aを薄くても変形することなく動作することが可能である。 The inner engagement portion 103 b of the drive ring 103 is engaged with the engagement portion 102 b of the base member 102. Engagement portion 102 b of the base member 102 may be a circular shape as a rotation center. In the first embodiment, the engaging portion 102 b includes a plurality of convex portions and engages with the inner engaging portion 103 b of the drive ring 103. The drive ring 103 and the base member 102 are engaged with each other so that the drive ring 103 is outside and the base member 102 is inside. With this relationship, since the inner engagement portion 103b of the drive ring 103a is supported by the engagement portion 102a of the base member 102, the drive ring 103 can suppress deformation in the circumferential direction. Therefore, even if the base portion 103a of the drive ring 103 is thin, it can operate without being deformed.
図16において、302は、中央に開口部が形成されているベース部材302である。ベース部材302は、レール302a1、302a2と係合部302bを有する。ベース部材302は、樹脂成形にて作成されたりする。ベース部材302には、駆動部301が取り付けられる。駆動部301は、例えば、ステッピングモータ、ガルバノモータなどを使用する。駆動部301の回転軸301aに、ピニオン304が取り付けられる。 In FIG. 16, reference numeral 302 denotes a base member 302 having an opening at the center. The base member 3 02 includes a rail 302a1,302a2 and the engaging portion 302b. The base member 302 is created by resin molding. The drive unit 301 is attached to the base member 302. The drive unit 301 uses, for example, a stepping motor, a galvano motor, or the like. A pinion 304 is attached to the rotation shaft 301 a of the drive unit 301.
Claims (20)
光通過貫通孔を有し、前記羽根を駆動する駆動リングと、
前記駆動リングを回転可能に保持する保持基板と、を備え、
前記駆動リングは、前記羽根と係合する第1の係合部を有する超薄型シート状部材から形成され、前記光通過貫通孔の内縁部が、前記保持基板に設けられた第2の係合部に係合して摺動することを特徴とする羽根駆動装置。 Blades entering and exiting the light passage path;
A drive ring having a light passage through hole and driving the blade;
A holding substrate for rotatably holding the drive ring,
The drive ring is formed of an ultra-thin sheet-like member having a first engagement portion that engages with the blade, and an inner edge portion of the light passage through hole is provided in a second engagement member provided on the holding substrate. A blade drive device that engages and slides on a joint .
前記ケース部材は、光通過方向において前記駆動リングに当接する当接部を有し、前記当接部が前記駆動リングを前記光通過方向に対して支持することを特徴とする請求項1から4のいずれか一項に記載の羽根駆動装置。The said case member has a contact part contact | abutted to the said drive ring in the light passage direction, and the said contact part supports the said drive ring with respect to the said light passage direction. The blade drive device according to any one of the above.
前記ケース部材には、前記駆動リングの他方面側のうち前記羽根が係合する前記第1の係合部の周囲で当接する前記当接部が設けられ、
前記駆動リングは、前記支持部と前記当接部との間で回動姿勢が保持されることを特徴とする請求項10に記載の羽根駆動装置。 The holding substrate is provided with a support portion that comes into contact with a portion other than a traveling region where the blades travel on one side of the drive ring,
In the case member, the abutting portion where the wings of the other side of the driving ring abuts around said first engagement portion to be engaged provided,
The drive ring, the blade drive device according to claim 1 0, characterized in that the turning posture is held between the support portion and front Kito contact portion.
前記羽根のうちカバー部材側の面には、前記カバー部材に設けられたカム溝に係合するカム溝係合突起部が設けられたことを特徴とする請求項11に記載の羽根駆動装置。 On the surface of the blade on the drive ring side, an engagement protrusion that engages with a through hole provided in the drive ring is provided,
The surface of the cover member side of the blade, blade drive device according to claim 1 1, characterized in that the cam groove engaging protrusion to be engaged with the cam groove formed in said cover member is provided .
前記駆動リングの厚さは、前記ピニオンギアの高さ寸法よりも薄いことを特徴とする請求項16に記載の羽根駆動装置。 The drive transmission member is a pinion gear attached to the rotation shaft of the drive motor,
The blade driving device according to claim 16 , wherein a thickness of the drive ring is smaller than a height dimension of the pinion gear.
前記駆動伝達部材のうち前記駆動ピン以外の部分には、前記駆動リングの回動姿勢を保持するための他の当接部が設けられたことを特徴とする請求項16に記載の羽根駆動装置。 The drive transmission member has a drive pin that turns as the drive motor rotates,
17. The blade drive according to claim 16 , wherein a portion of the drive transmission member other than the drive pin is provided with another contact portion for maintaining a rotational posture of the drive ring. apparatus.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014202931A JP6580819B2 (en) | 2014-10-01 | 2014-10-01 | Blade driving device and imaging device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014202931A JP6580819B2 (en) | 2014-10-01 | 2014-10-01 | Blade driving device and imaging device |
Publications (3)
Publication Number | Publication Date |
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JP2016071279A JP2016071279A (en) | 2016-05-09 |
JP2016071279A5 true JP2016071279A5 (en) | 2017-09-21 |
JP6580819B2 JP6580819B2 (en) | 2019-09-25 |
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Family Applications (1)
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JP2014202931A Active JP6580819B2 (en) | 2014-10-01 | 2014-10-01 | Blade driving device and imaging device |
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JP (1) | JP6580819B2 (en) |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002369489A (en) * | 2001-06-06 | 2002-12-20 | Canon Inc | Electromagnetically driven motor and electromagnetically driven stop device having the motor |
JP4191556B2 (en) * | 2003-07-18 | 2008-12-03 | 日本電産コパル株式会社 | Camera aperture device |
JP2007199578A (en) * | 2006-01-30 | 2007-08-09 | Sony Corp | Aperture adjustment device and imaging apparatus |
JP5020743B2 (en) * | 2007-08-27 | 2012-09-05 | 日本電産コパル株式会社 | Camera aperture device |
JP3145532U (en) * | 2008-07-30 | 2008-10-09 | 日本精密測器株式会社 | Aperture device |
JP5631673B2 (en) * | 2010-09-10 | 2014-11-26 | キヤノン株式会社 | Light intensity adjustment device |
JP6068903B2 (en) * | 2012-09-27 | 2017-01-25 | キヤノン電子株式会社 | Aperture device and imaging device |
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2014
- 2014-10-01 JP JP2014202931A patent/JP6580819B2/en active Active
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